[IGSREPORT-21336] Wk 1712 IGS Final Orbits

IGS ACC igs.acc at noaa.gov
Thu Nov 15 12:22:56 PST 2012


Author:  AC Coordinator / NOAA NGS

sum-file Version 2.0
Final IGS Orbit Combination - Week 1712   (Oct 28, 2012 - Nov 03, 2012)

Contacts: J. Griffiths (jake.griffiths at noaa.gov)
          K. Choi (kevin.choi at noaa.gov)


COMBINATION STRATEGY:
---------------------

Starting with GPS week 860, the IGS Final orbit combination is done directly
in the ITRF without any alignment to the Bulletin B EOP series.

Each centre satellite clock corrections are first transformed to a common 
reference. One of the following two methods can be used (the REMARKS section of
this report gives which method is used):
[1] For each centre, a clock offset and a drift are estimated with respect to
    the broadcast clock corrections using only non-SA satellites;
[2] A chosen reference centre is aligned to the broadcast clock corrections
    using all satellites. All other centres are then aligned to that reference
    centre. 
The offsets and drifts are used to align each centre satellite clock
corrections to GPS time. Ephemerides and clock corrections are then combined
as weighted averages computed over all centres. Each centre is given a
position weight and a clock weight. The position weights are computed from
each centre's absolute deviation to the unweighted average orbit after the
estimation of a 7-parameter Helmert transformation. The clock weights are
either computed from [1] the absolute deviation of the initial alignment to
broadcast clock for the non-SA satellites, or [2] from the absolute deviation
of centre's aligned clock corrections with respect to the unweighted mean.
Finally, a 7-parameter Helmert transformation and clock offset and drift are
estimated for each centre with respect to the combined solutions and parameters
and RMS of fit reported. All the above estimations are performed using the
L1-norm robust scheme.

  Each centre ephemerides are also evaluated individually and independently from
the orbit combination by using week long arcs. The Earth Orientation Parameters
(EOP) used in this evaluation are those submitted by the respective centres.
The IGS combined orbits/clocks and all centres providing both orbit and clock 
solutions are further evaluated by an independent point positioning (navigation)
program that uses both phase and pseudorange data. This is primarily intended 
for testing clock solution precision as well as the orbit/clock consistency.

 Like the clock solutions broadcast in the navigation message, the combined
satellite clocks are corrected for the periodical relativistic correction (see
e.g. GPS interface Control document ICD-GPS-200, p.73):

                              -2*(X.V)/c  [distance unit],

where X and V are the inertial sv state and velocity vectors and c is the speed
of light. Also for compatibility, no satellite L1/L2 delay calibration should be
applied.


SOFTWARE:
---------

The weighted average software used was originally developed by T. Springer
and G. Beutler in 1993. The GPS long arc orbit analysis software used here for
individual centre ephemeris evaluation was developed by Beutler et al. at the
Astronomical Institute of the University of Bern (AIUB). For more details on
the orbit combination and complete references for both software see:

  Beutler G., Kouba J. and T. Springer, 1995, Combining the orbits of the IGS 
  Analysis Centers, Bulletin Geodesique, 69, pp 200-222.

  Kouba J., Mireault Y. and F. Lahaye, 1995, 1994 IGS Orbit/Clock Combination
  and Evaluation, Appendix I of the Analysis Coordinator Report, International
  GPS Service for Geodynamics (IGS) 1994 Annual Report, pp. 70-94.

  Kouba J. and Y. Mireault, 1996, IGS Analysis Coordinator Report, 
  International GPS Service for Geodynamics (IGS) 1995 Annual Report, 
  pp. 45-76.

  Kouba J. and Y. Mireault, 1997, Analysis Coordinator Report, 
  International GPS Service for Geodynamics (IGS) 1996 Annual Report, 
  pp. 55-100.


PRODUCTS GENERATED:
-------------------

The resulting average ephemeris and clocks are output to daily files in SP3
format. The satellite accuracy codes displayed in the header are based on the
weighted RMS for each satellite. Note that each file contains all the
satellites that appear in any of the centre ephemeris files. If a satellite or
centre was excluded from combination, a note in the REMARKS section of this
report will identify the exclusion and the reason.

  The resulting x and y earth rotation parameters (ERP) associated with the IGS
ephemeris files and their rates (xrt, yrt) are computed using a weighted average
of all available centres (as part of the separate SINEX combination since GPS
week 1051; weighted according to the orbit combination before that time). 

  Starting with GPS wk 0894, IGS LOD combinations were implemented in the 
Final IGS solutions.  AC LOD biases with respect to Bulletin A are estimated
using Bulletin A most recent 3 weeks (21 days), i.e. up to 5 days prior to
the last non-predicted day of Bulletin A.  AC LOD biases are removed and the
new AC bias-free LODs are used to compute a weighted IGS LOD which in turn
is integrated into IGS UT1-UTC. The starting UT1-UTC value is chosen as
Bulletin A fifth day prior to its last non-predicted day. Both IGS LOD and 
UT1-UTC values are printed in the IGS Final erp file.



The Final Orbit files generated and uploaded into CDDIS @ NASA/GSFC are:

igs1712[0-6].sp3  IGS GPS ephemeris files in SP3 format.
igs1712[0-6].clk  IGS GPS satellite and station clocks in clock RINEX format.
igs1712[0-6].cls  IGS GPS clock combination summary report.
igs17127.erp      Earth Rotation Parameters (ERP) and their rates as well as
                  Universal Time (UT1-UTC) and Length Of Day (LOD) associated 
                  with IGS ephemerides.
igs17127.sum      Complete report.

    
REMARKS concerning the IGS Orbit Combination:                                  
---------------------------------------------

 1. The centres used in the clock combination are COD, EMR, ESA, GFZ, MIT, and JPL.
    The other centres are excluded because of poorer consistency (GRG), they provide
    broadcast clocks (NGS), or clock corrections are not provided (SIO).  The clock
    information not used is still compared to combination for completeness. The
    value of 999999.999999 microseconds, according to the sp3 format convention,
    signifies that no clock solution is available and therefore must not be used.
    
    In general, if an AC does not contribute to the terrestrial reference frame
    (i.e. the SINEX combination), then any corresponding orbits & clocks contributed
    from that AC should not be included with weight in this combination. This is
    done to ensure a high level of consistency between the TRF and the orbital
    frame. However, there is an exception for the clocks if the AC is the reference
    center. In that case, only the clocks from that AC are included with weight.
    
    Starting 12-Aug-2012 (GPS Week 1701, day 0, MJD 56151), GRG clocks are included
    after changing their procedures to generate estimates in the center-of-figure
    frame instead of the center-of-mass frame. Starting 16-Sep-2012 (GPS Week 1706,
    day 0, MJD 56186) the CODE Analysis Center began submitting two solutions: COD
    (1d SNX with 3d orbital arcs) and COF (1d SNX with 1d orbital arcs). The COD
    clocks and orbits are included for comparison only; the COF solution is
    included with weight, and is the reference clock center.
    

 2. Rapid (IGR) orbits/clocks are included in the combination for statistics only.
    Starting week 1582, a new solution from CNES/GRGS (GRG) is included with
    weight except for the clock and LOD combinations.

 3. The following centre clock solutions, which provide broadcast clock
    corrections, were excluded from the combination but kept in the combination
    statistics:
             -> Centre: NGS 

 4. The following clock solutions were excluded from the combination because they
    were biasing the combined clock solutions (clock shifts/outliers) but were
    kept for the RMS computation.  Duplicate entries can arise due to separate
    combination runs for the 30-s clocks ACs (listed first) and the 5-min clock
    ACs (listed second).
    
               Day | Centre | PRN/STA list
               ----+--------+---------------
                0  |  COF   | KOUC KOUC
                0  |  EMR   | 32 32
                0  |  ESA   | AREQ
                0  |  GFZ   | 32 ARTU BOGT LHAZ POLV RESO SOFI YELL
                0  |  GRG   | MCM4 SOFI YEBE BARH MCM4 NTUS SOFI YEBE
                0  |  JPL   | 21 32
                0  |  MIT   | 16 21 22 32 16 21 22 24 32 AREQ NTUS SOFI GMAS NICO
                0  |  MIT   | NTUS SOFI
                1  |  COF   | HERT MATE HERT MATE
                1  |  EMR   | 32 32 WUHN
                1  |  ESA   | AREQ
                1  |  GFZ   | BOGT BOR1 CHPI MCM4 PALM POLV SFER WSRT
                1  |  GRG   | 13 13 NOVM
                1  |  JPL   | 21 REUN
                1  |  MIT   | 24 32 24 32 GMAS
                2  |  COF   | 32 32 KOUC KOUC
                2  |  EMR   | HERS HERS
                2  |  ESA   | 32 32
                2  |  GFZ   | ARTU BOGT LHAZ LPGS
                2  |  GRG   | HYDE LPGS HYDE LPGS
                2  |  JPL   | PIMO
                2  |  MIT   | GMAS JPLM
                3  |  ALL   | 13
                3  |  COD   | KOSG
                3  |  COF   | 32 32 KOUC KOSG KOUC SUTM
                3  |  EMR   | THTI
                3  |  ESA   | 32 32 AREQ
                3  |  GFZ   | BOGT METS POLV SFER
                3  |  GRG   | 13 HYDE HYDE LHAZ RAMO
                3  |  JPL   | 30
                4  |  COF   | 18 22 30 32 18 22 32 KOUC MATE MOBS ALRT FLRS KOUC
                4  |  COF   | MATE MOBS
                4  |  EMR   | 30
                4  |  ESA   | 30 32 32 FLIN TIXI
                4  |  GFZ   | BOGT
                4  |  GRG   | 30 ALRT MAC1 USNO XMIS MAL2 MATE USNO XMIS
                4  |  JPL   | 30
                4  |  MIT   | 5 24 5 24 30 MAC1 NTUS
                5  |  COF   | 30 32 30 32 ALIC KOUC ALIC FLRS KOUC
                5  |  EMR   | CHUR
                5  |  ESA   | 30 32 30 32 CHUR AREQ
                5  |  GFZ   | ASPA HOFN LHAZ POLV
                5  |  GRG   | WSRT ADIS THTI WSRT
                5  |  JPL   | 10
                5  |  MIT   | 2 10 21 2 10 21 24 GMAS
                6  |  COD   | KOUC KOUC
                6  |  COF   | 30 32 10 30 32 KOUC AREQ KOUC
                6  |  ESA   | 10 30 32 10 30 32 MATE MATE
                6  |  GFZ   | 10 30 ABPO KERG LHAZ MAC1 SUTM
                6  |  GRG   | SOFI WSRT ADIS AREQ KOUC SOFI WSRT
                6  |  JPL   | MAC1
                6  |  MIT   | 19 22 19 22 MAC1 GMAS MAC1

 5. The following orbit solutions were excluded from the combination because 
    they were biasing the weighted average (generally indicated by long arc RMS).
    They were still used for statistics computation.
    
               Day | Centre | PRN list
               ----+--------+---------------
                3  |  ESA   | ALL (high Transformation - See Table 2)
                4  |  ESA   | ALL (high Transformation - See Table 2)
                4  |  SIO   | ALL (high Transformation - See Table 2)
                5  |  SIO   | ALL (high Transformation - See Table 2)
                6  |  ESA   | ALL (high Transformation - See Table 2)
                6  |  SIO   | ALL (high Transformation - See Table 2)

 6. Velocity changes were estimated to alleviate the effects of modeling
    problems, experienced by all centres,in the Long Arc (LA) process.
    
             Velocity changes per day and affected satellites:
    
               Day |  0 |  1 |  2 |  3 |  4 |  5 |  6 |
           --------+----+----+----+----+----+----+----+
           PRN G30 |    |    |    |  1 |    |    |    |

 7. Starting 5-Nov-2006 (GPS Week 1400, day 0, MJD 54044) until 16-Apr-2011
    (GPS Week 1631, day 6, MJD 55667) all IGS products, including the IGS
    combined orbits, are based on the IGS realization of the ITRF2005 reference
    frame (IGS05).   For more information see IGSMAIL #5447.  The IGS05 frame
    is also the basis for the homogeneously reprocessed IGS products from GPS
    Weeks 730 to 1459 (1994-2007); see IGSMAIL #6136.
    
    Starting 17-Apr-2011 (GPS Week 1632, day 0, MJD 55668) all IGS products,
    are based on the IGS realization of the ITRF2008 reference frame (IGS08).
    For more information see IGSMAIL #6354.
    
    Starting 07-Oct-2012 (GPS Week 1709, day 0, MJD 56207) all IGS products,
    are based on the updated IGS08 frame (IGb08).
    For more information see IGSMAIL #6663.

 8. Small rotations were applied to all the AC orbit and ERP values in order
    to align them to the current IGS reference frame. These rotations were
    estimated in the IGS SINEX combination process, performed by the IGS Reference
    Frame Coordinator at the Institut Geographique National (IGN). Starting on
    19-Aug-2012 (GPS Week 1702; mjd=56158), ACs began contributing products based
    on 1d SINEX integrations. As a result, the SINEX combinations are now done
    daily instead of weekly, and the associated daily rotations are applied here
    to the orbits and ERPs.  The estimated 7 transformations, from which only the
    3 rotations are applied to the orbit and ERP values, are:
    
            |     |    DX     DY     DZ      RX     RY     RZ     SCL
     Centre | Day |   [mm]   [mm]   [mm]   [uas]  [uas]  [uas]   [ppb]
     -------+-----+---------------------------------------------------
       COD  |   0 |     .2    1.3     .0     -45     -2    -20    -.24
       COF  |   0 |     .3    1.2    -.7     -44     -5     -9    -.08
       EMR  |   0 |    2.1    6.1    5.3       1     10      8     .22
       ESA  |   0 |    5.8    3.9   -9.2     108   -237    126    -.12
       GFZ  |   0 |    -.4     .7    -.3     -40    -44    -18     .0 
       GRG  |   0 |    1.8    1.3   -4.4     -23     47    -72     .14
       JPL  |   0 |     .0    -.6   10.4     -38      1     24     .03
       MIT  |   0 |    6.1    7.2    4.5      -7      5    -34     .09
       NGS  |   0 |    5.8   -2.4    6.0     -41    -21     40     .26
       SIO  |   0 |    3.1    1.9  -15.8      38   -137   -109     .11

       COD  |   1 |     .2    1.2     .0     -38      5    -10    -.23
       COF  |   1 |     .2    1.1     .5     -25     17    -22    -.40
       EMR  |   1 |    8.9   11.0    8.5      -3      7     -3    -.04
       ESA  |   1 |    9.1    8.4  -17.4     200   -352    106    -.22
       GFZ  |   1 |     .2     .8     .0     -31    -52    -30    -.09
       GRG  |   1 |    5.5    7.0    4.7     -36     24    -49    -.02
       JPL  |   1 |    6.5    7.9   12.8     -42     22    -16    -.31
       MIT  |   1 |   12.5    6.3    5.6      -9      0    -22    -.02
       NGS  |   1 |    9.0    -.2    6.5     -38    -43     69     .05
       SIO  |   1 |    2.6    4.9  -13.4      34    -74   -243    -.08

       COD  |   2 |    1.0    1.4     .2     -36     -3    -32    -.31
       COF  |   2 |    1.1    1.8     .2     -42     -5    -24    -.24
       EMR  |   2 |    3.4    9.4    6.8       3      0      1     .09
       ESA  |   2 |    8.4    6.6  -14.2     171   -305    126    -.25
       GFZ  |   2 |     .6     .8    -.5     -28    -50    -22    -.20
       GRG  |   2 |   -1.4   -1.1    1.2     -32     27    -50     .34
       JPL  |   2 |    2.0   10.3   11.9     -38      6    -39    -.08
       MIT  |   2 |    6.2    8.3    2.4      -5      3    -28     .0 
       NGS  |   2 |   11.4    1.0    6.3     -29    -41     82     .18
       SIO  |   2 |    4.7    2.3  -20.1      62   -177    -96    -.01

       COD  |   3 |     .9    1.0    -.4     -42    -11     -5    -.25
       COF  |   3 |    1.0     .9    -.4     -40    -16     -1    -.25
       EMR  |   3 |    5.7   10.7    4.3      -5     -2      0     .04
       ESA  |   3 |   11.7    6.8  -16.6     191   -388    128    -.24
       GFZ  |   3 |     .4    1.0    -.8       4    -69    -19    -.18
       GRG  |   3 |     .5   -1.6   -2.5     -16     52    -56     .24
       JPL  |   3 |    6.1    5.7    8.6     -77     42     -1     .02
       MIT  |   3 |    6.8    9.6    1.3      -7      2    -30     .01
       NGS  |   3 |    2.8    5.1     .4       5    -11     30     .23
       SIO  |   3 |    2.7    3.8  -23.0      41   -175   -192    -.15

       COD  |   4 |     .9    1.1    -.3     -40     -4    -18    -.21
       COF  |   4 |     .7    1.3    -.8     -35      6    -14    -.18
       EMR  |   4 |    5.5   11.9     .4      10     15      5     .0 
       ESA  |   4 |   10.5    7.9  -19.0     242   -369    121     .03
       GFZ  |   4 |    1.1     .8     .9     -21    -79    -29    -.12
       GRG  |   4 |    1.9     .2    -.4      -5     50    -31     .17
       JPL  |   4 |   -1.5    8.0    7.4     -65     26    -13     .34
       MIT  |   4 |    7.0   11.1   -2.9      -6      2    -26     .06
       NGS  |   4 |    3.8    2.2    -.2       5    -17     29     .30
       SIO  |   4 |    4.7    4.5  -31.4      29   -261   -262    -.03

       COD  |   5 |     .6     .7     .0     -49      3    -19    -.18
       COF  |   5 |     .7     .5     .3     -51     12    -23    -.12
       EMR  |   5 |    3.9   12.9   -1.6      -1     14      4     .21
       ESA  |   5 |    7.6    4.1  -18.8     172   -314    128     .24
       GFZ  |   5 |    1.1     .0     .0     -28    -56    -12     .03
       GRG  |   5 |    3.5    1.5    6.5     -16     35    -34     .20
       JPL  |   5 |   -1.6    4.9    4.5     -24     19    -41     .09
       MIT  |   5 |    7.8    7.5     .7       0     -2    -28     .18
       NGS  |   5 |    1.6    2.1    -.4      -2     -8     24     .32
       SIO  |   5 |    1.5    4.2  -45.9      92   -252   -183     .21

       COD  |   6 |     .5     .9     .5     -55      3    -20    -.17
       COF  |   6 |     .9     .8     .2     -41      1    -25    -.19
       EMR  |   6 |    7.3    5.6   -5.7      13     12    -11     .22
       ESA  |   6 |    7.8    5.4  -15.3     176   -343    103     .25
       GFZ  |   6 |    1.4    -.4    -.4     -22    -46    -26     .05
       GRG  |   6 |    2.1    1.8   -6.9     -15     46    -44     .35
       JPL  |   6 |    2.8   -2.2    2.7       0     -2     10     .32
       MIT  |   6 |    7.7    7.9   -2.9      -3      7    -31     .16
       NGS  |   6 |    3.2    3.2    7.3     -37    -11     27     .47
       SIO  |   6 |    3.2    2.5  -53.6     114   -361   -120     .12


 9. Starting on 22-Oct-2000 (GPS Week 1085-0; mjd=51839) all IGS clock products
    are based on the new clock combination scheme which uses the clock RINEX
    files as input if available, otherwise SP3 clocks are used. 
    The navigation solution is still based on the SP3 clocks but this will soon
    adopt the clock RINEX files as well.

10. Starting on 27-Feb-2000 (GPS Week 1051-0; MJD 51601) the IGS final products
    are aligned to the IGS reference frame products (station coordinates and ERPs
    as generated by IGN). For more information see IGSMAIL #2750. Because of this
    change in alignment, Table 2 has been enhanced with one additional line per AC.
    This additional line shows daily X- and Y-rotations, i.e. RX_sp3(ac) and
    RY_sp3(ac), used to align each daily AC orbit to the combined SINEX prior to
    the orbit combination. These a-priori rotations are derived from three sources:
    the daily AC polar motion estimates, XPO(ac) and YPO(ac), provided in their ERP
    files; the combined polar motion values, XPO(cmb) and YPO(cmb), from the SINEX
    combination; along with the AC TRF rotations, RX_snx(ac) and RY(ac), also from
    the SINEX combination: 
    
                      RX_sp3(ac) = YPO(ac) - YPO(cmb) + RX_snx(ac)
                      RY_sp3(ac) = XPO(ac) - XPO(cmb) + RY_snx(ac)
    
    Thus, the total rotation of the individual AC orbits w.r.t. the IGS combined
    orbit is the sum of the values in the two lines of Table 2.
    
    Starting on 19-Aug-2012 (GPS Week 1702; mjd=56158), the AC TRF rotations are
    daily values, instead of weekly ones, based on the combination of daily AC
    SINEX files.

11. Starting 5-Nov-2006 (GPS Week 1400, day 0, MJD 54044) until 16-Apr-2011
    (GPS Week 1631, day 6, MJD 55667) the absolute antenna model is introduced
    (IGSMAIL #5438). The antenna phase center offsets and phase center
    variations are given in the file:
        ftp://igs.org/igscb/station/general/igs05.atx
    These antenna calibrations are also used in the homogeneously reprocessed
    IGS products from GPS Weeks 730 to 1459 (1994-2007); see IGSMAIL #6136.
    
    Starting 17-Apr-2011 (GPS Week 1632, day 0, MJD 55668) the absolute antenna
    model is updated (IGSMAIL #6255 & #6374) as given in the file:
        ftp://igs.org/igscb/station/general/igs08.atx
    
    The JPL solution did not use IGS08/igs08.atx until GPS Week 1649, which
    caused their RMS clock residuals to be higher during that period than for
    the other centres; since GPS Week 1632 the JPL solution is excluded from
    the weekly SINEX combination.
    
    Starting 07-Oct-2012 (GPS Week 1709, day 0, MJD 56207) the igs08.atx absolute
    antenna model file gives updated (IGSMAIL #6662) values for the JPSREGANT_DD
    and JPSREGANT_SD antennas, plus updates for GPS IIF transmit antennas. This
    updated file should be used in conjunction with IGb08. Though, igs08.atx is
    also still consistent with IGS08.

    
ORBIT COMBINATION AND EVALUATION STATISTICS:                                    
--------------------------------------------                                    
      
Most combination statistics are with respect to the combined orbits and
consist of five parts. The first, Table 1, summarizes all statistics for
the week.  It contains means and standard deviations over the week of
satellite ephemeris and clock correction transformation parameters for
each centre (table 1.1712.a). It also displays the computed satellite
position sigmas for the combined orbits (table 1.1712.b).
The second part, Table 2, contains the complete ephemeris and clock
correction transformation parameters (includes both the apriori and a
posteriori values) for each centre and each day (tables 2.1712.[0-6]).
The third part, Table 3, contains two types of daily RMS for each satellite
and centre, along with the computed satellite position sigmas for the
combined orbits (tables 3.1712.[0-6]). The first type of satellite RMS is
based on orbit combination and the second RMS type is a result of the 7-day
arc evaluation of each centre ephemerides. The fourth part, Table 4, is a
weekly summary of the daily precise navigation summaries for centres
providing both orbit and clock solutions.  It contains weekly station RMS
w.r.t. the initial coordinates for the Latitude, Longitude and Height 
components for up to three IGS stations (table 4.1307). The fifth and final
part, Table 5, is similar to Table 4 and contains daily precise navigation
statistics (tables 5.1712.0-6).

In tables 1-3, the most important statistic which is meaningful for intra
centre/satellite analysis is labeled WRMS. It is a weighted RMS where
normalized weights are based on accuracy codes given in the SP3 files, and
should not be affected by downweighted/problem satellites when acknowledged
by individual centres in their SP3 file.
                                                                               

             
Table 1: Week 1712 summary.                       (Oct 28, 2012 - Nov 03, 2012)

Table 1.1712.a   GPS week: 1712   MJD: 56228.000-56234.000

         Mean and standard deviations of transformation parameters to the 
         combined IGS orbit.
         WRMS - orbit RMS weighted by the SP3 header accuracy codes.
         STA  - Mean number of stations in the daily solutions.
   
CENT STA|   DX    DY    DZ    RX    RY    RZ   SCL  RMS  WRMS|    TOFT   TDRFT   SDEV    RMS
        |  [mm]  [mm]  [mm] [uas] [uas] [uas] [ppb] [mm] [mm]|    [ps]  [ps/d]   [ps]   [ps]
--------+----------------------------------------------------+------------------------------
cod  261|    0     0     0   100   -53     4  -.45   11   11 |    -678    -314     42    100
        |    0     0     2    34    59    16   .03           |     826    1400
cof  254|    1     0     0    85   -79    13  -.44   12   12 |    -641    -309     20     95
        |    1     0     1    39    63    19   .02           |     827    1403
emr   80|   -2     1     1    -5   -53     7   .27   16   16 |    2424     333     15    100
        |    1     1     2    44    47    22   .03           |     854     582
esa  175|    0     0     1  -236   325    12   .04    7    7 |   -1326    1092     12    115
        |    0     0     1   113   126    19   .03           |     743     814
gfz  184|   -1     0    -1    -9    16    10  -.43   13   12 |    -139     217     21    142
        |    1     0     1    61    65    19   .05           |     284     337
grg  126|    0     0    -1    36  -129   -25   .43   15   14 |    -168     110     14    155
        |    1     1     1    57    34    17   .07           |     326     467
igr  n/a|    0     0     0    10   -42   -23  -.15    4    4 |    4350     496     17    100
        |    0     0     0    30    58    12   .01           |     851     548
jpl   80|   -1     0     0    66   -54     5   .42   14   13 |    3234      86     17    160
        |    1     0     1    62    55    11   .02           |     978     523
mit  239|    0     0    -1    18   -60     0  -.17    6    6 |    -122    -107     21    200
        |    0     0     0    45    56    12   .02           |     393     567
ngs  239|    0     0     2    70     5     5   .39   12   10 |    -682    -243   1708   3441
        |    0     0     3    74    62    28   .02           |     594    1031
sio  272|    0    -1     0  -119   339  -171  -.21   18   16 |     ---     ---    ---    ---
        |    0     1     1    69   235    66   .03           |     ---     ---


Table 1.1712.b   GPS week : 1712   MJD: 56228.000-56234.000   

         Satellite position sigmas for the combined orbits
         (coded in the IGS SP3 orbit files).
         "E" flags eclipsing satellites.
         Units: mm.

              Day of GPS week
 PRN  |    0    1    2    3    4    5    6 |  Remarks
------+------------------------------------+------------------------------------------
   1  |    4    4    4    4    5    4    4 |
   2  |    4    4    4    5    5    5    5 |
   3  |    4    3    3    4    4    4    4 |
   4  |    4    4    4    4    4    3    4 |
   5  |    4    3    4    4    4    4    5 |
   6  |    3    3    3    4    5    4    4 |
   7  |    4    4    4    4    5    5    5 |
   8  |    4    3    3    4    4    4    4 |
   9  |    4    4    3    4    4    4    4 |
  10  |    6    6    7    6    7    6    5 |
  11  |    4    3    4    4    5    4    4 |
  12  |    4    5    5    6    6    5    6 |
  13  |    4    4    4    5    5    4    5 |
  14  |    4    4    4    4    5    5    5 |
  15  |    4    4    4    5    5    4    4 |
  16  |    4    4    4    5    5    4    4 |
  17  |    4    4    4    5    5    4    5 |
  18  |    3    4    4    4    4    4    4 |
  19  |    4    5    5    5    5    5    5 |
  20  |    3    3    4    4    5    3    4 |
  21  |    4    4    4    4    5    4    4 |
  22  |    3    3    3    4    5    4    4 |
  23  |    4    4    4    5    6    5    5 |
  24  |    8    9    8    9   12   10   15 |
  25  |    5    4    5    5    5    5    5 |
  26  |    3    3    3    4    4    3    4 |
  27  |    0    0    0    0    0    0    0 |
  28  |    4    3    4    4    4    4    4 |
  29  |    4    4    4    5    5    5    5 |
  30  |    4    4    5    6    6    5    6 |
  31  |    4    4    5    5    5    5    6 |
  32  |    4    4    5    5    6    5    6 |



Table 2: Daily transformation of each centre to the combined IGS orbit and
         clocks for each day of the week. The transformation displayed is the
         sum of a priori and estimated transformations.
         WRMS - RMS weighted by the centres SP3 header accuracy codes.
         STA  - Number of stations in the daily solutions.
   
Table 2.1712.0   GPS week: 1712   Day: 0   MJD: 56228.000                            

CENT STA|   DX    DY    DZ    RX    RY    RZ   SCL  RMS  WRMS|    TOFT   TDRFT   SDEV    RMS
        |  [mm]  [mm]  [mm] [uas] [uas] [uas] [ppb] [mm] [mm]|    [ps]  [ps/d]   [ps]   [ps]
--------+----------------------------------------------------+------------------------------
cod  265|   -1     0    -1    90   -44    -1  -.41   10   10 |   -1403     413     34    112
        |                      1     1                       |
cof  259|    1     0     0    95   -46    17  -.42   11   11 |   -1365     401     18    106
        |                     58    36                       |
emr   80|   -1     1     1   -15   -26    25   .23   16   16 |    1772     628     12    106
        |                     48   -31                       |
esa  175|    0     0     2   -71   163    30   .06    6    6 |   -1318     788     11    161
        |                    -36   134                       |
gfz  187|   -2     0    -3   -30   -86    -4  -.35   11   10 |     196      69     22    190
        |                    -39   -55                       |
grg  128|    0     2    -3    42  -129   -47   .49   17   16 |    -464     398     16    152
        |                     31   -16                       |
igr  n/a|    0    -1     0    15   -35   -21  -.14    4    4 |    3370     473     16    108
        |                    -53    93                       |
jpl   80|    0     0    -1    76   -12     6   .44   13   13 |    2877     613     16    155
        |                     60    22                       |
mit  240|    0     0    -2     1  -126   -15  -.14    7    6 |    -372     291     20    241
        |                     -8     1                       |
ngs  242|    0    -1     5   130    27    13   .42   13   10 |   -1300     274   1737   3592
        |                   -158    39                       |
sio  285|    0    -2    -1  -140   177   -99  -.20   18   15 |     ---     ---    ---    ---
        |                     75   -93                       |

Table 2.1712.1   GPS week: 1712   Day: 1   MJD: 56229.000                            

CENT STA|   DX    DY    DZ    RX    RY    RZ   SCL  RMS  WRMS|    TOFT   TDRFT   SDEV    RMS
        |  [mm]  [mm]  [mm] [uas] [uas] [uas] [ppb] [mm] [mm]|    [ps]  [ps/d]   [ps]   [ps]
--------+----------------------------------------------------+------------------------------
cod  264|    0     0    -1   117  -140    22  -.46   12   12 |   -1860    1596     38    100
        |                     57    33                       |
cof  259|    2     0    -1    68  -184    18  -.43   13   12 |   -1821    1601     22     96
        |                     69    34                       |
emr   80|    0     3     3    37  -116    33   .24   17   17 |    1850     880     13    103
        |                     18   -46                       |
esa  175|    0     0     0  -254   288    30   .06    6    6 |   -1681    1906     12    111
        |                     62    31                       |
gfz  189|    0     0     0    22    79     1  -.41   12   11 |     -72      55     22    141
        |                    -13   -58                       |
grg  128|   -1     1    -2   116  -146    -9   .42   14   14 |    -577     627     14    168
        |                     12    17                       |
igr  n/a|    1     0     0    39  -131   -16  -.16    4    4 |    3380    1006     17    107
        |                     -2    44                       |
jpl   80|   -2     0     0    95  -150    13   .43   14   14 |    3214     718     16    163
        |                     64    15                       |
mit  240|    1     0    -1    60   -60    14  -.18    5    5 |    -620     715     21    205
        |                    -19   -15                       |
ngs  241|    0     0     2   146  -100   -23   .39   12    9 |   -1458    1044   1543   3273
        |                    -56   132                       |
sio  214|    0    -3     0   -43    41  -230  -.24   17   15 |     ---     ---    ---    ---
        |                     51   -36                       |

Table 2.1712.2   GPS week: 1712   Day: 2   MJD: 56230.000                            

CENT STA|   DX    DY    DZ    RX    RY    RZ   SCL  RMS  WRMS|    TOFT   TDRFT   SDEV    RMS
        |  [mm]  [mm]  [mm] [uas] [uas] [uas] [ppb] [mm] [mm]|    [ps]  [ps/d]   [ps]   [ps]
--------+----------------------------------------------------+------------------------------
cod  262|    0     0    -1   111  -108    15  -.46   14   13 |    -383    -462     48     90
        |                     48     0                       |
cof  258|    2     0    -3   104  -122    21  -.44   14   14 |    -354    -443     19     79
        |                     40    34                       |
emr   80|    0     2     3     3   -89    16   .27   16   16 |    2764     534     15    103
        |                     27   -33                       |
esa  175|    0     0     1  -209   213    13  -.01    6    6 |   -1590    1398     11    102
        |                     28    72                       |
gfz  188|   -2     0    -2   101   -10    12  -.45   13   12 |     -89    -222     19    124
        |                    -45   -81                       |
grg  127|   -1     0     1    74  -178   -22   .50   15   14 |     177    -628     15    161
        |                     31    15                       |
igr  n/a|    0     0     0    20  -101   -32  -.15    4    4 |    4432     530     17     86
        |                    -47    45                       |
jpl   80|    0    -1     1    75   -85     7   .39   15   14 |    3961     162     17    152
        |                     36     1                       |
mit  240|    0     0    -1    79  -110    -4  -.17    7    6 |     -21    -196     19    173
        |                      5    -3                       |
ngs  240|    1     1     0    84   -31   -19   .40   12    9 |    -370    -483   1433   3190
        |                   -105    39                       |
sio  282|    0    -1     0   -64   205   -85  -.20   17   16 |     ---     ---    ---    ---
        |                     48  -143                       |

Table 2.1712.3   GPS week: 1712   Day: 3   MJD: 56231.000                            

CENT STA|   DX    DY    DZ    RX    RY    RZ   SCL  RMS  WRMS|    TOFT   TDRFT   SDEV    RMS
        |  [mm]  [mm]  [mm] [uas] [uas] [uas] [ppb] [mm] [mm]|    [ps]  [ps/d]   [ps]   [ps]
--------+----------------------------------------------------+------------------------------
cod  261|   -1     0     1   103    34    19  -.46   11   10 |     751   -3007     34     90
        |                    -12    -6                       |
cof  254|    2    -1     2    87     6    37  -.43   14   13 |     792   -3012     21     91
        |                     30    43                       |
emr   80|    0     0     2    18    15    21   .25   15   15 |    4042    -558     15    107
        |                     22    -1                       |
esa  175|    1     0     3  -243   506    29   .07    9    9 |    -206     308     12    126
        |                     10    -8                       |
gfz  186|   -2    -2    -3   -94   -17    51  -.43   15   15 |     175     406     24    159
        |                    -22   -63                       |
grg  126|    0     0     0    15   -74   -25   .48   16   15 |     339    -284     14    147
        |                     29    -9                       |
igr  n/a|    1     0     1    12    22     1  -.16    5    5 |    5697    -391     16    119
        |                    -40    68                       |
jpl   80|   -3     0     2   155   -49    18   .42   13   13 |    4725    -495     16    158
        |                     -4    23                       |
mit  240|    0     0     0   -50   -69     6  -.18    5    5 |     634   -1002     22    203
        |                      9    -4                       |
ngs  239|    2     0    -1    29    75    32   .40   11   10 |     332   -2301   1783   3632
        |                    -67   -18                       |
sio  280|   -1     0     1  -101   293  -184  -.20   15   15 |     ---     ---    ---    ---
        |                     21  -138                       |

Table 2.1712.4   GPS week: 1712   Day: 4   MJD: 56232.000                            

CENT STA|   DX    DY    DZ    RX    RY    RZ   SCL  RMS  WRMS|    TOFT   TDRFT   SDEV    RMS
        |  [mm]  [mm]  [mm] [uas] [uas] [uas] [ppb] [mm] [mm]|    [ps]  [ps/d]   [ps]   [ps]
--------+----------------------------------------------------+------------------------------
cod  260|   -1     1     3    34    -7     0  -.46   12   11 |    -458    -656     70    106
        |                     48     4                       |
cof  251|    0     1     0    23   -48    25  -.46   12   12 |    -408    -660     23     98
        |                     31    17                       |
emr   80|   -3     0     2   -83   -32    -4   .28   16   16 |    2745    -339     18     79
        |                     15   -16                       |
esa  175|    1     2     0  -447   463    -9   .00    9    8 |    -520    -123     15    119
        |                     90     3                       |
gfz  178|    0     0     0    -3    91    13  -.50   13   13 |    -204     197     22    127
        |                    -42   -85                       |
grg  128|    2    -1     0   -59  -112    -6   .39   14   14 |    -253     338     17    162
        |                     57    27                       |
igr  n/a|    1     0     0   -45     3   -30  -.15    5    5 |    4816     -56     19    100
        |                    -42    56                       |
jpl   80|   -1    -1     0    47   -31    10   .39   13   13 |    3697    -693     22    155
        |                     14   -21                       |
mit  240|    1     0    -1    46    18    -9  -.17    7    7 |    -228     189     25    200
        |                    -19   -40                       |
ngs  235|    0    -1     0   -75    66   -29   .38   11   10 |    -579    -256   1795   3458
        |                    -46    12                       |
sio  284|    0     0     1   -70   526  -262  -.21   18   17 |     ---     ---    ---    ---
        |                     33  -265                       |

Table 2.1712.5   GPS week: 1712   Day: 5   MJD: 56233.000                            

CENT STA|   DX    DY    DZ    RX    RY    RZ   SCL  RMS  WRMS|    TOFT   TDRFT   SDEV    RMS
        |  [mm]  [mm]  [mm] [uas] [uas] [uas] [ppb] [mm] [mm]|    [ps]  [ps/d]   [ps]   [ps]
--------+----------------------------------------------------+------------------------------
cod  260|    0     0     1   149   -76   -24  -.48   10   10 |    -732    -202     35    108
        |                     42   -10                       |
cof  250|    2     0     0   152  -111    -5  -.48   12   12 |    -697    -191     21    106
        |                     41    24                       |
emr   80|   -5     0     1    40   -94   -14   .28   16   16 |    1555     934     16    105
        |                     26    -4                       |
esa  175|    1     0     0  -175   273    11   .01    7    7 |   -2401    2093     11    100
        |                     33    76                       |
gfz  183|   -1     0    -2    -8   -10    -2  -.46   14   14 |    -400     167     20    118
        |                    -21   -47                       |
grg  124|    0     0    -1    63  -154   -49   .30   16   15 |    -181    -158     14    153
        |                     27    36                       |
igr  n/a|    0     0     0    39   -62   -30  -.16    4    4 |    3927    1076     19     88
        |                     -3    71                       |
jpl   80|   -3    -1     2    63   -71    -7   .41   14   13 |    2108     225     18    173
        |                     76   -25                       |
mit  239|    0     0     0     5   -87    -5  -.18    7    6 |    -238    -547     21    190
        |                     17   -21                       |
ngs  240|    0     0     0    82   -24    36   .35   11   10 |    -730    -132   1983   3512
        |                   -185    38                       |
sio  281|   -1     0     1  -178   392  -202  -.25   18   18 |     ---     ---    ---    ---
        |                    112  -230                       |

Table 2.1712.6   GPS week: 1712   Day: 6   MJD: 56234.000                            

CENT STA|   DX    DY    DZ    RX    RY    RZ   SCL  RMS  WRMS|    TOFT   TDRFT   SDEV    RMS
        |  [mm]  [mm]  [mm] [uas] [uas] [uas] [ppb] [mm] [mm]|    [ps]  [ps/d]   [ps]   [ps]
--------+----------------------------------------------------+------------------------------
cod  259|   -1     0     1    95   -31    -1  -.41   11   10 |    -665     116     39     96
        |                     51    21                       |
cof  253|    0     0     0    65   -46   -20  -.44   11   11 |    -637     138     18     89
        |                     48    40                       |
emr   80|   -1     0    -2   -37   -31   -24   .33   15   15 |    2242     258     17    102
        |                      2     1                       |
esa  175|    0     1     1  -253   370   -16   .06    9    9 |   -1571    1278     12     90
        |                     31    48                       |
gfz  181|    0    -1     0   -56    68     0  -.43   11   10 |    -583     852     19    140
        |                    -50   -18                       |
grg  127|    0     1    -1     1  -109   -15   .43   16   15 |    -218     480     13    147
        |                     23    46                       |
igr  n/a|    0     0     0   -12     4   -32  -.15    4    4 |    4829     840     15     96
        |                    -26    33                       |
jpl   80|    0     0     0   -51    21   -12   .45   13   13 |    2056      74     16    169
        |                     74   -35                       |
mit  239|    1     0    -1   -12    13    17  -.15    6    6 |     -11    -199     21    189
        |                     -3   -28                       |
ngs  240|    0     0     8    95    29    25   .39   11   10 |    -671     151   1683   3431
        |                    -83    46                       |
sio  278|   -1     0     3  -236   738  -132  -.16   20   19 |     ---     ---    ---    ---
        |                    125  -352                       |

       
       
Table 3: Daily fit for each satellite and each centre resulting from weighted
         average combination and from long arc orbit dynamics (7-day). The
         first IGS column gives resulting satellite accuracy measures found in
         SP3 header. The last IGS column gives the RMS fit of the IGS orbit
         when processed through the 7-day arc evaluation.

         "E"    stands for eclipsing satellites (earth).
         "M"    stands for eclipsing satellites (moon).
         "X"    stands for excluded from the statistics but included in IGS orbit.
         "T"    stands for Total long arc orbit RMS for all satellites.
         "NE"   stands for long arc orbit RMS for Non-Eclipsing satellites only.
         "MEDI" stands for median of the centre's satellite RMS.
         "MD"
         Units: mm.

Table 3.1712.0   GPS week: 1712   Day: 0   MJD: 56228.000                            

        Weighted Average                                                 Orbit Dynamics (7 days)
 PRN  |  cod  cof  emr  esa  gfz  grg  igr  jpl  mit  ngs  sio  IGS |   cod  cof  emr  esa  gfz  grg  igr  jpl  mit  ngs  sio   IGS
------+-------------------------------------------------------------+--------------------------------------------------------------
   1  |    9   14   15    8   11   16    4   11    5   11   13    3 |    32   33   36   38   36   48   35   51   37   41   41    37
   2  |    7    7   18    6   14   16    5   16    8   12   22    4 |    18   22   28   22   20   28   18   30   18   26   17    19
   3  |    6   10   11    5   10   17    4    9    8   11   16    3 |    17   19   24   24   22   33   20   30   19   27   25    21
   4  |    7    7   11    5   10   15    4   11    5   14   35    4 |    34   33   30   30   38   35   31   28   34   25   32    30
   5E |    8    8   15    5   12   15    6   17    7   12   10    3 |    34   35   43   40   39   47   38   42   39   42   36    38
   6  |    5    8   10    5   12   14    2    9    5    8   11    3 |    24   26   29   29   24   34   26   33   24   28   28    25
   7  |   13    9   13    7   10   14    5   15    5   11   18    3 |    17   21   22   18   18   25   15   21   15   22   17    14
   8  |   11   12   12    6   10   12    4   11    6   11   23    3 |    17   21   20   15   16   19   14   22   15   18   18    13
   9  |   12    8   13    6   11   12    3   10    9   15   15    3 |    15   17   20   15   18   21   15   24   17   23   20    15
  10E |   15   18   26    8   14   19    6   18    8   32   25    6 |    22   24   36   23   28   27   20   30   25   40   23    22
  11  |    8   14   17    6    8   15    5   12    5   10   10    3 |    30   29   40   30   33   44   31   40   33   30   31    31
  12  |   10   11   21    6   10   18    6   20    8   11   14    4 |    19   24   24   21   22   30   19   27   21   27   20    19
  13  |    9    9   13    6   13   20    4   14    7   12   13    3 |    18   23   29   22   24   35   20   29   20   21   20    20
 X14  |    8   11   17    5   11  ---    4   12    7   11   12    3 |    17   22   21   18   23  ---   18   27   19   21   19    17
  15  |    9   10   16    7    7   15    4   14    8   12   17    3 |    18   17   24   21   20   33   18   27   21   26   19    19
  16  |    6    8   16    6   10   19    3   15    5    9   14    3 |    20   24   27   23   19   31   20   27   20   24   17    20
  17  |   14   10   17    5   15   13    4   15    6   13   27    4 |    31   30   30   29   35   36   30   32   30   27   30    28
  18E |    6    7    9    7   10   14    3   10    5   11   11    3 |    36   35   37   35   28   41   34   42   32   35   36    33
  19  |    7   11   13    6    8   10    3   10    6   11   24    3 |    23   25   27   27   25   30   25   31   25   26   29    24
  20E |    9   11   12    6    9   20    5   11    5    7   12    3 |    41   41   46   41   47   43   43   43   44   48   47    42
  21  |   12    9   16    5   12   16    4   14    5   10   15    3 |    21   23   32   19   18   27   18   30   17   22   15    18
  22E |    9    9   11    6    8   19    2   11    5    8   11    3 |    22   25   27   25   23   34   21   28   22   27   25    22
  23  |   13   13   14    7   12   18    6   14    7   13   17    4 |    18   26   27   21   19   26   17   28   18   20   18    18
 X24  |   35   22  ---   11  ---   23   15  ---    9  ---  ---    8 |   111  108  ---  110  ---  118  109  ---  111  ---  ---   110
  25  |    7   13   25    6   12   39    6   15    7   10   20    5 |    24   25   25   24   30   39   23   32   24   31   31    23
  26  |    9    9   13    4    8   13    4   10    5   11   18    3 |    22   24   29   26   31   33   22   28   29   24   21    25
 X27  |   53    9  ---  ---  ---  ---   70  ---  ---  ---  ---    0 |    29   46  ---  ---  ---  ---   22  ---  ---  ---  ---    48
  28  |    8   10   17    5   10   17    4   13    6    7   10    3 |    16   19   22   18   17   31   15   25   16   21   19    17
  29  |   11   14   18    6   11   16    5   15    5   13   26    4 |    24   28   28   27   29   29   26   29   27   25   23    25
  30  |    9    8   16    5   15   16    4   12    8   12   23    4 |    40   44   47   44   42   42   43   47   40   44   41    41
  31  |    9   13   19    5   14   15    3   15    6   11   13    4 |    20   24   29   22   23   32   19   31   20   29   22    20
  32E |   15   15   18    6   10   15    5   15    8   20   10    4 |    39   42   48   43   38   49   42   50   42   51   42    42
------+-------------------------------------------------------------+--------------------------------------------------------------
 RMS  |   10   11   16    6   11   17    4   13    7   13   18      |T   27   29   30   29   26   36   27   32   28   29   26    28
 WRMS |   10   11   16    6   10   16    4   13    6   10   15      |NE  25   28   27   27   24   35   25   29   26   25   23    26
 MEDI |    9   10   15    6   10   16    4   13    6   11   15      |MD  22   25   28   24   24   33   21   30   24   26   23    22

Table 3.1712.1   GPS week: 1712   Day: 1   MJD: 56229.000                            

        Weighted Average                                                 Orbit Dynamics (7 days)
 PRN  |  cod  cof  emr  esa  gfz  grg  igr  jpl  mit  ngs  sio  IGS |   cod  cof  emr  esa  gfz  grg  igr  jpl  mit  ngs  sio   IGS
------+-------------------------------------------------------------+--------------------------------------------------------------
   1  |   10   13   18    9   10   12    3   12    6    8   10    3 |    27   29   33   37   29   44   34   49   34   38   36    33
   2  |   10    7   20    9   16   11    4   17    5   11   23    4 |    19   24   34   26   23   28   21   31   21   23   16    20
   3  |    8    9   12    3   12   12    4    9    4   14   16    3 |    20   22   27   20   22   25   19   26   19   23   18    17
   4  |   10    5   14    4   11   11    4   10    4   13   30    3 |    40   41   35   33   39   34   38   35   38   33   39    33
   5E |    8    7   17    5    9   13    3   16    4   10   15    3 |    33   34   42   33   30   40   33   38   33   37   32    31
   6  |    8   11   12    4   12   10    3    7    5   15   11    3 |    22   24   30   22   25   27   22   29   20   27   20    19
   7  |    8   14   15    8   14   14    4   15    5   12   15    4 |    22   26   29   22   23   27   24   28   21   24   25    19
   8  |   12    8   14    6    8   10    4   12    5    9   13    3 |    18   21   24   14   15   16   16   22   15   16   22    12
   9  |   12   13   12    6   11   13    5    9    6    8   17    3 |    18   20   28   20   18   25   18   25   18   18   23    16
  10E |   17   17   22   10   13   22    5   18    5   27   19    5 |    29   30   42   31   26   36   29   39   30   40   29    27
  11  |    9    9   17    6    8   14    6   13    3    9   11    3 |    24   26   36   28   23   36   25   36   25   25   27    24
  12  |   16   18   22    8   10   14    4   21    6    7   16    4 |    25   30   32   24   21   31   23   30   21   28   22    21
  13  |    7   10   16    7   12   19    4   15    5   11   12    3 |    24   27   31   21   21   36   22   32   21   24   25    21
  14  |   12   12   17    8   12   13    4   13    5   11   15    3 |    20   26   30   19   23   26   20   28   19   23   23    19
  15  |   16   13   16    5    9   21    4   15    6    9   20    4 |    20   19   25   19   16   36   18   27   18   23   19    17
  16  |    8   10   14    5   11   16    4   13    4    9   17    3 |    22   23   28   21   22   31   20   25   21   23   15    18
  17  |   10   10   18    5   15    8    5   15    5   10   24    4 |    25   24   30   23   24   26   25   27   24   21   24    21
  18E |   15   20   13    7   12   12    3    9    5   11   12    3 |    28   32   29   23   26   31   24   29   27   26   28    25
  19  |   26   29   14    5   10   11    5   14    7   16   22    4 |    34   36   28   21   18   24   20   28   18   20   19    17
  20E |    6   10   14    5    8   10    4   14    5   10   16    3 |    44   45   46   43   41   47   43   47   42   40   45    40
  21  |   11   10   16    7   12   14    5   13    5   13   16    3 |    16   18   30   15   14   27   16   28   15   23   15    14
  22E |    7    9   13    7   12   16    2   10    5    6   10    3 |    21   21   26   23   18   27   21   31   20   24   23    19
  23  |    9   10   19    5   12   16    4   17    5    8   16    3 |    24   28   29   21   18   31   22   30   22   25   21    19
 X24  |   31   19  ---   15  ---   21   12  ---    9  ---  ---    8 |    73   73  ---   72  ---   82   76  ---   76  ---  ---    73
  25  |   13   11   25    8   13   15    4   18    5    9   18    4 |    22   26   31   23   24   34   24   32   22   24   30    21
  26  |   11    9   11    4   10   13    3    9    3    7   15    2 |    26   27   33   27   25   33   27   30   29   30   26    25
 X27  |   63   14  ---  ---  ---  ---  133  ---  ---  ---  ---    0 |    29   81  ---  ---  ---  ---   62  ---  ---  ---  ---    80
  28  |   11    9   17    6    9   15    4   13    5    8    7    3 |    18   21   28   18   17   29   17   25   18   22   19    15
  29  |   14   12   19    4   14   14    4   17    5   11   23    4 |    22   29   30   21   23   25   21   28   20   24   19    18
  30  |   14   10   16    4   16   15    3   14    8   10   24    4 |    63   63   66   65   67   64   62   68   63   63   63    64
  31  |   12   13   21    6   15   16    5   17    6   10   15    4 |    18   21   28   16   17   27   18   29   16   24   17    14
  32E |   14   16   17    7    8   15    6   15    6   18   12    4 |    33   36   45   37   30   45   36   46   36   45   39    36
------+-------------------------------------------------------------+--------------------------------------------------------------
 RMS  |   12   13   17    6   12   14    4   14    5   12   17      |T   27   31   32   27   24   33   28   32   26   27   25    26
 WRMS |   12   12   17    6   11   14    4   14    5    9   15      |NE  25   29   29   24   21   31   25   29   23   24   22    24
 MEDI |   11   10   16    6   12   14    4   14    5   10   16      |MD  24   26   30   23   23   31   22   29   21   24   23    20

Table 3.1712.2   GPS week: 1712   Day: 2   MJD: 56230.000                            

        Weighted Average                                                 Orbit Dynamics (7 days)
 PRN  |  cod  cof  emr  esa  gfz  grg  igr  jpl  mit  ngs  sio  IGS |   cod  cof  emr  esa  gfz  grg  igr  jpl  mit  ngs  sio   IGS
------+-------------------------------------------------------------+--------------------------------------------------------------
   1  |   12   13   16   10   10   11    5   12    8   10   11    3 |    26   27   32   33   33   46   33   45   33   38   37    33
   2  |   11   12   16    6   16   13    3   14    7   12   23    4 |    16   18   30   23   23   25   21   27   21   26   14    20
   3  |   10    9    9    3   12   13    4    9    5    8   20    3 |    15   14   23   18   25   26   16   21   17   23   15    17
   4  |   11   11   13    5   13   11    2   12    5   10   29    4 |    24   30   22   23   27   23   24   22   22   27   28    22
   5E |    8   10   14    6   12   11    4   14    7   12   16    3 |    38   38   45   43   45   42   41   42   41   40   49    41
   6  |    9    8    9    3   15   10    2    8    4   11   15    3 |    19   19   24   21   30   26   18   24   21   24   18    19
   7  |   12   13   14    5   14   13    4   20    5    6   14    3 |    19   17   23   15   20   25   16   23   15   22   16    14
   8  |   14   10   11    5   13   12    3   13    7    7   10    3 |    14   15   20   13   18   17   16   19   16   19   20    13
   9  |   12   13   11    4   14   11    3   10    4    9   15    3 |    10   15   20   15   14   21   15   22   14   24   17    14
  10E |   23   29   22   11   14   21    7   17    9   31   17    6 |    28   36   33   25   22   26   19   28   22   35   21    20
  11  |   10   10   18    5    7   12    3   13    7   15   10    3 |    21   24   34   24   26   36   23   32   25   25   26    24
  12  |   14   11   22    6   17   19    3   24    7   12   16    4 |    22   24   27   23   29   30   23   28   21   30   20    21
  13  |    7   10   16    7   13   15    3   15    5   10   14    3 |    18   19   29   20   23   36   21   28   20   24   19    20
  14  |    9   10   19    5   13   13    4   13    5    9   12    3 |    12   16   24   17   19   22   17   22   14   21   15    16
  15  |   19   16   13    3   11   15    4   15    5    9   17    3 |    16   17   25   19   17   30   19   25   19   26   18    18
  16  |    9   12   17    6   10   15    4   15    9   10   18    4 |    14   17   24   17   17   30   17   22   17   24   12    16
  17  |   15   13   18    5   17   11    5   17    6   11   23    4 |    19   28   26   20   29   26   24   26   22   31   23    23
  18E |   15   21   11    7   13   16    4   11    6   10   11    4 |    33   34   29   31   30   38   31   33   27   32   30    30
  19  |   31   33   12    5   11   10    4   12    5    8   22    4 |    32   33   25   20   25   24   17   24   20   22   20    19
  20E |    7   10   12    5   10   18    4   17    5    9   12    3 |    35   36   40   36   37   43   37   38   38   38   41    36
  21  |   14   12   14    4   13   13    3   15    6   12   19    3 |    13   13   26   19   16   27   16   27   14   26   12    17
  22E |    9    8   12    5   13   18    3   11    6    8    7    3 |    15   14   19   18   16   20   16   20   16   20   16    16
  23  |   11   13   18    6   13   15    4   18    6   14   17    4 |    20   21   27   18   20   28   19   26   19   22   18    17
 X24  |   25   25  ---   10  ---   20   11  ---   10  ---  ---    8 |    89   93  ---   88  ---   92   91  ---   91  ---  ---    89
  25  |   12   17   25   10   14   17    3   17    6    7   16    4 |    21   26   24   23   21   32   22   31   21   28   29    21
  26  |    9    9   10    5   13   13    3    9    6   11   13    3 |    15   16   21   19   16   25   18   20   18   21   19    17
 X27  |   36   12  ---  ---  ---  ---   42  ---  ---  ---  ---    0 |    20   36  ---  ---  ---  ---   38  ---  ---  ---  ---    35
  28  |   12   10   15    3   14   17    6   11    8    9    9    3 |    15   15   23   17   17   30   16   20   18   21   16    15
  29  |   14   14   15    5   13   14    4   17    8    9   25    4 |    22   23   27   24   28   26   26   26   28   31   21    24
  30E |   32   16   19    8   16   22    5   15   10   11   26    5 |    55   68   73   64   64   68   64   73   61   65   67    65
  31  |   12   16   17   10   14   17    4   17    8    9   14    4 |    17   21   25   18   17   27   17   25   13   23   13    15
  32E |   15   15   19    7   11   16    4   16    8   19   10    4 |    31   31   43   35   29   41   33   43   33   42   34    35
------+-------------------------------------------------------------+--------------------------------------------------------------
 RMS  |   14   14   16    6   13   15    4   15    7   12   17      |T   23   26   28   25   25   32   25   28   25   28   23    25
 WRMS |   13   14   16    6   12   14    4   14    6    9   16      |NE  21   23   25   22   22   30   23   25   22   25   19    22
 MEDI |   12   12   15    5   13   14    4   14    6   10   15      |MD  19   21   25   20   23   27   19   26   21   25   19    20

Table 3.1712.3   GPS week: 1712   Day: 3   MJD: 56231.000                            

        Weighted Average                                                 Orbit Dynamics (7 days)
 PRN  |  cod  cof  emr  esa  gfz  grg  igr  jpl  mit  ngs  sio  IGS |   cod  cof  emr  esa  gfz  grg  igr  jpl  mit  ngs  sio   IGS
------+-------------------------------------------------------------+--------------------------------------------------------------
   1  |    9   13   18    7   14   12    4   10    4    7   11    4 |    27   26   30   32   34   45   31   45   32   39   36    34
   2  |    7    9   17   11   17   14    6   14    6   11   20    4 |    17   19   29   21   22   25   17   28   19   25   16    19
   3  |    6   11    9   10   13   12    4    8    5    9   18    3 |    14   15   21   18   24   22   18   22   16   24   17    18
   4  |    8    7   10    7   12   11    5   12    3    9   25    4 |    27   29   24   25   34   27   27   24   29   30   29    26
   5E |    8   12   13    8   13   17    3   14    6   10   10    4 |    45   50   49   50   50   45   47   46   46   51   46    46
   6  |    8   10   10    8   14   11    3    8    5   11   16    3 |    19   20   24   22   29   26   22   25   21   23   24    22
   7  |   11   14   15    9   12   16    5   14    5   10   14    4 |    19   23   24   16   22   26   15   23   17   23   16    16
   8  |    8   11   10    7   15   17    4   11    5    9   12    3 |    12   16   17   12   18   16   10   18   13   16   16    11
   9  |   11   15   11    7   16   10    4   12    5    8   16    4 |    15   16   21   17   18   20   16   23   16   21   18    15
  10E |   19   18   20   14   14   27    6   17    7   22   16    6 |    26   32   35   29   30   33   26   34   28   38   27    28
  11  |    7    9   14    7   12   14    5   12    5   10   10    3 |    25   22   34   25   27   38   24   33   24   28   25    26
  12  |   13   15   20   11   15   17    5   22    7   13   14    5 |    16   20   27   21   22   29   18   26   20   28   16    17
  13  |    7   12   14    8   17   20    4   11    6    9   11    4 |    17   23   28   22   28   36   21   28   21   20   20    21
  14  |    8   12   15    8   15   11    3   13    5    9   12    4 |    17   20   25   23   20   24   19   25   17   20   17    17
  15  |    9   11   14    9   12   16    4   14    4   14   16    4 |    19   18   23   19   22   30   14   25   16   21   17    15
  16  |    6   14   15    9   13   18    7   13    6    8   15    4 |    14   20   23   22   19   27   17   22   14   23   15    14
  17  |   11   10   15   10   21   11    5   16    6   10   22    5 |    23   21   26   26   34   27   23   26   24   23   23    22
  18E |    8    9   10    9   12   18    4   11    3   10    7    3 |    31   29   35   35   29   37   32   37   30   34   33    31
  19  |   26   28   12   10   13   11    5   11    5   10   22    5 |    27   28   25   25   29   27   24   26   22   27   23    23
  20E |    6   10   10    9   13   22    3   14    3   12   12    4 |    35   38   36   38   40   47   35   39   36   32   35    36
  21  |    9   11   15    6   13   16    4   13    5    8   19    4 |    15   17   29   17   17   25   15   26   14   19   13    15
  22E |    6   10   11    9   14   18    4   10    5    9    8    3 |    21   23   24   23   21   18   21   25   18   22   18    18
  23  |   11   15   16    7   18   15    4   14    5   12   15    4 |    14   22   26   19   25   27   17   24   18   21   17    17
 X24  |   26   20  ---   15  ---   18    9  ---    7  ---  ---    9 |    97  102  ---   96  ---  107   98  ---   99  ---  ---   100
  25  |   10   17   24    8   13   15    3   18    5   14   11    5 |    18   21   23   25   30   32   22   29   22   27   25    20
  26  |    9   14   13   10   13   13    5    8    8   10    9    4 |    19   19   25   20   23   27   19   26   24   21   20    21
 X27  |   64    9  ---  ---  ---  ---   56  ---  ---  ---  ---    0 |    32   54  ---  ---  ---  ---   44  ---  ---  ---  ---    56
  28  |    9   11   14   10   17   18    5   12    5    9    9    4 |    13   16   21   16   23   28   12   21   14   19   16    13
  29  |   11   12   15   10   11   13    7   15    6   14   24    5 |    16   22   26   23   30   23   25   26   26   28   21    23
  30E |   16   19   16    8   20   22    8   17    9   12   19    5 |   132  135  130  130  121  127  129  133  126  133  125   128
  31  |    9   14   18   10   18   15    4   14    6   14   13    5 |    15   18   26   20   21   26   17   26   14   27   13    16
  32E |   14   16   18    8   13   18    5   15    6   18   13    5 |    31   32   44   37   31   39   34   44   33   41   37    35
------+-------------------------------------------------------------+--------------------------------------------------------------
 RMS  |   11   14   15    9   15   16    5   13    5   11   15      |T   27   30   31   29   29   35   28   31   28   30   25    28
 WRMS |   10   13   15    9   15   15    5   13    5   10   15      |NE  21   25   25   24   24   30   23   25   23   24   19    23
 MEDI |    9   12   14    9   13   16    4   13    5   10   14      |MD  19   22   26   23   25   27   21   26   21   24   20    21

Table 3.1712.4   GPS week: 1712   Day: 4   MJD: 56232.000                            

        Weighted Average                                                 Orbit Dynamics (7 days)
 PRN  |  cod  cof  emr  esa  gfz  grg  igr  jpl  mit  ngs  sio  IGS |   cod  cof  emr  esa  gfz  grg  igr  jpl  mit  ngs  sio   IGS
------+-------------------------------------------------------------+--------------------------------------------------------------
   1  |   14   13   16    9   10   13    4   12    6    9   11    4 |    28   30   36   37   32   44   35   49   37   38   37    37
   2  |   10    8   17    9   15   13    6   14    8    8   24    4 |    18   23   33   22   23   26   20   30   24   28   17    23
   3  |   11   10    9    6   16   11    3    8    6    9   19    4 |    16   17   23   18   25   22   17   22   19   24   15    19
   4  |    7    5   12    7   14   12    4   10    7   12   25    4 |    28   28   24   25   30   28   26   25   30   25   25    25
   5E |    9    8   13    7   10   13    4   14    6    8   13    4 |    54   51   55   50   51   59   50   52   57   53   48    54
   6  |   13   20   10    7   13   13    2    8    7    9   17    4 |    20   24   25   20   28   24   20   25   22   25   20    21
   7  |   12   14   16    8   12   19    4   14    6   13   15    5 |    17   20   24   16   17   25   14   22   17   24   10    15
   8  |   13   10   12    8   11   10    6   11    5   11   10    4 |    11   16   18   14   16   13   13   17   16   17   16    12
   9  |   10    7   10   10   12   15    4   11    5   13   19    4 |    12   15   23   18   16   23   15   23   15   28   15    16
  10E |   16   14   24   11   12   16    6   19    9   19   27    6 |    23   25   35   24   25   30   20   28   21   39   33    23
  11  |    9   11   17    9    9   15    4   11    5   15   13    4 |    22   25   38   29   28   36   24   35   28   33   25    29
  12  |   12   11   23    9   11   14    6   23    7   13   17    6 |    15   18   28   22   21   28   19   27   20   32   14    19
  13  |    9   13   15    9   15   19    4   13    7   13   13    5 |    16   20   27   16   20   32   16   26   20   19   16    18
  14  |    7   11   17    8   12   13    5   12    8   11   15    4 |    15   18   27   17   20   25   16   23   18   20   16    17
  15  |    9   10   16   10   10   15    5   15    6    9   19    4 |    19   22   26   24   23   31   20   27   20   22   22    21
  16  |    8   10   16    8   12   15    4   11    7   10   18    4 |    14   12   25   15   22   24   14   22   15   20   11    15
  17  |   11   10   15    8   15   11    5   15    7   12   25    4 |    22   25   27   26   31   26   24   26   26   27   26    23
  18E |   10    8   11    9   10   13    5   11    5    8   23    3 |    38   37   37   39   36   42   35   40   36   38   37    37
  19  |   20   19   11    5   13    9    6   11    7   11   23    4 |    27   28   26   25   27   23   23   27   25   27   20    23
  20E |    7   11   11    7   13   17    5   12    6   11   26    4 |    35   38   39   36   36   45   34   35   37   35   38    36
  21  |   11    7   15    8   11   13    6   12    8   11   23    4 |    17   14   30   16   17   28   15   27   21   23   17    19
  22E |    8    8   15   12   12   18    5   10    6   11   10    4 |    29   27   33   26   30   27   25   30   30   23   27    27
  23  |   12   17   15    9   16   18    4   15    8   12   19    5 |    16   20   27   16   20   26   15   26   19   20   14    17
 X24  |   26   15  ---   18  ---   28   20  ---   11  ---  ---   12 |    88   87  ---   93  ---   99   88  ---   91  ---  ---    90
  25  |   11   10   26   10   10   14    7   16    8    6   10    5 |    20   23   27   25   23   33   22   30   21   31   22    22
  26  |    9   10   10    8   10   12    5    9    5    8    6    3 |    14   16   26   18   20   22   17   26   16   22   19    17
 X27  |   55    8  ---  ---  ---  ---  115  ---  ---  ---  ---    0 |    34   59  ---  ---  ---  ---   70  ---  ---  ---  ---    58
  28  |   12    8   12    6   13   16    5   12    6    8    8    4 |    12   12   20   17   15   29   12   20   16   21   14    14
  29  |    9   10   17    8   13   12    7   14    8   13   26    5 |    18   19   27   23   22   22   22   24   24   27   19    20
  30E |   19   17   19   11   17   15    7   17   11   12   21    6 |    94   97  106  100  109  104  100  105   96   96  104    99
  31  |   10   12   15    9   15   16    4   13    8    9   16    5 |    15   17   26   19   22   30   17   25   18   25   16    18
  32E |   16   16   17    9   16   15    5   16    8   16   10    6 |    28   30   43   34   32   38   31   43   31   38   31    33
------+-------------------------------------------------------------+--------------------------------------------------------------
 RMS  |   12   12   16    9   13   14    5   13    7   11   18      |T   26   28   32   28   27   34   27   31   28   30   24    28
 WRMS |   11   12   16    8   13   14    5   13    7   10   17      |NE  21   24   26   23   22   29   23   26   24   25   18    24
 MEDI |   11   10   15    9   12   14    5   12    7   11   17      |MD  19   23   27   23   23   28   20   26   21   25   19    21

Table 3.1712.5   GPS week: 1712   Day: 5   MJD: 56233.000                            

        Weighted Average                                                 Orbit Dynamics (7 days)
 PRN  |  cod  cof  emr  esa  gfz  grg  igr  jpl  mit  ngs  sio  IGS |   cod  cof  emr  esa  gfz  grg  igr  jpl  mit  ngs  sio   IGS
------+-------------------------------------------------------------+--------------------------------------------------------------
   1  |   11   16   12    4   16   14    4   12    6   12   13    4 |    30   28   36   35   31   45   34   49   35   41   37    35
   2  |    7    7   18    9   20   13    5   17    7   11   24    4 |    20   21   32   21   26   26   19   31   23   25   18    22
   3  |    9   12   11    4   15   13    2   10    4    7   20    3 |    18   20   20   20   17   22   16   22   17   22   16    17
   4  |    4    6   10    4   12   13    4    9    5    8   27    3 |    22   22   19   17   22   22   19   19   21   19   21    17
   5E |    8    7   13    6   13   11    4   16    7   11   22    3 |    36   38   40   38   39   40   37   40   37   42   42    38
   6  |   12   11   11    6   17   11    3    8    3   11   15    3 |    20   24   22   24   21   22   21   24   20   27   21    20
   7  |    8   13   17    8   15   23    4   13    7   12   19    4 |    19   21   26   18   21   30   16   23   20   22   16    16
   8  |   10   10   11    6   14   15    5   10    6    9   12    3 |    15   17   19   11   18   20   11   21   16   15   19    11
   9  |   10   11   12    9   11   12    6   11    6   10   16    3 |    17   16   20   14   12   20   12   24   14   22   14    13
  10E |   13   12   24    7   15   13    5   21    8   19   22    5 |    31   33   43   31   33   31   30   40   33   40   41    31
  11  |    7    8   16    4   13   15    4   11    5   10   15    3 |    22   21   36   23   23   34   22   35   24   31   24    24
  12  |   10   10   21    9   15   17    6   24    6   12   15    5 |    20   18   25   18   21   28   13   26   16   25   13    15
  13  |    8   11   15    6   15   23    4   13    8    7   15    4 |    19   23   30   23   24   36   20   29   23   22   18    21
  14  |    9    9   15   11   12   16    2   12    9   12   13    4 |    15   16   22   22   17   24   14   23   14   22   14    16
  15  |   13    9   15    5   11   17    5   16    7    9   18    4 |    16   18   23   17   16   30   14   25   15   22   16    15
  16  |    7   13   19    6   11   16    5   14    8   10   18    4 |    14   18   25   17   15   26   15   24   15   20   13    14
  17  |    8    9   15    7   15   12    3   16    7    9   27    4 |    21   16   23   17   24   21   15   24   18   21   16    15
  18E |   11   15   13    6   13   15    3   11    6   10    7    4 |    24   27   31   31   29   31   28   31   26   31   28    27
  19  |   21   25   13    7   13   12    5   12    5   12   23    4 |    21   22   24   23   20   23   18   26   19   23   16    18
  20E |    6    9   11    5   11   12    5   12    4   11   12    3 |    23   23   28   22   18   28   21   26   24   26   24    21
  21  |   10   10   15    6   13   16    3   13    5   11   25    4 |    13   16   29   17   17   27   15   26   16   20   17    17
  22E |    7    8   20    7   14   14    2   12    5   11    9    4 |    26   25   37   28   30   32   25   28   25   25   24    25
  23  |   10   13   17    8   16   21    5   16    7   11   17    4 |    18   23   26   20   21   29   18   27   20   20   16    18
 X24  |   31   28  ---   13  ---   22   11  ---   10  ---  ---    9 |    73   73  ---   74  ---   81   69  ---   71  ---  ---    72
  25  |   10   15   22    7   13   17    6   16    6    9    8    4 |    18   20   19   16   21   28   16   25   16   22   17    15
  26  |    9    9   11    4   12   11    5    8    5    8    9    3 |    22   23   29   22   25   26   21   27   26   28   25    23
 X27  |   46   13  ---  ---  ---  ---  103  ---  ---  ---  ---    0 |    32   43  ---  ---  ---  ---   55  ---  ---  ---  ---    42
  28  |    7    8   14    5   15   17    5   12    6    7   14    3 |    15   16   20   14   17   26   11   23   17   18   19    12
  29  |    7   14   15    9   12   14    4   15    9   14   25    4 |    20   23   24   23   24   21   18   26   23   25   18    19
  30E |   16   19   17    9   14   18    6   15   11   12   23    5 |    95   96  103   97  104  103   97  100   98   96   93    98
  31  |   10   12   16    9   16   21    4   12    9   11   14    4 |    17   19   24   20   15   27   15   26   14   23   16    16
  32E |   14   19   19    7   16   16    4   17    8   13   11    5 |    32   35   42   34   30   37   33   45   32   40   33    34
------+-------------------------------------------------------------+--------------------------------------------------------------
 RMS  |   10   12   16    7   14   16    4   14    7   11   18      |T   25   26   29   26   25   32   24   30   25   27   23    24
 WRMS |   10   12   16    7   14   15    4   13    6   10   18      |NE  21   23   24   21   20   28   20   26   21   23   18    20
 MEDI |   10   11   15    7   14   15    4   12    6   11   15      |MD  20   22   25   22   21   28   18   26   20   23   18    18

Table 3.1712.6   GPS week: 1712   Day: 6   MJD: 56234.000                            

        Weighted Average                                                 Orbit Dynamics (7 days)
 PRN  |  cod  cof  emr  esa  gfz  grg  igr  jpl  mit  ngs  sio  IGS |   cod  cof  emr  esa  gfz  grg  igr  jpl  mit  ngs  sio   IGS
------+-------------------------------------------------------------+--------------------------------------------------------------
   1  |   11   10   16    8    9   16    5   13    4   10   13    4 |    34   36   41   40   37   53   40   56   41   46   46    42
   2  |   11    7   17   10   18   12    5   17    6   11   26    5 |    22   24   33   23   26   26   22   35   24   29   24    25
   3  |    9   10   11    7   12   19    3    6    7    9   22    4 |    19   17   26   20   20   28   15   23   17   22   18    18
   4  |    7    5   10    7   10   12    4    9    4   13   25    3 |    32   32   30   30   32   32   30   29   31   26   28    29
   5E |   10    7   15    8   11   11    5   18    7   12   13    4 |    45   45   51   49   44   51   45   50   47   54   44    47
   6  |    8    9    8    8   12   16    3    8    5   10   16    3 |    24   21   30   26   31   33   23   28   24   23   27    24
   7  |    9    9   16    8   11   21    4   15    5   11   18    4 |    21   22   27   16   20   28   16   26   16   21   18    18
   8  |   11    9    9    8   10   13    5   11    4   11   11    3 |    13   15   16   13   16   15   11   17   13   18   15    12
   9  |    8    8   12   10   10   16    4   10    4   12   19    4 |    13   14   21   15   12   22   12   21   14   23   16    14
  10E |   12   10   19   12   12   12    5   17    6   14   31    5 |    24   26   40   29   26   35   28   37   30   38   32    29
  11  |    7    8   15    8   11   18    4   11    4    9   17    4 |    27   28   38   28   27   44   28   38   29   28   31    29
  12  |   16   11   21   15   10   13    7   20    7   14   18    5 |    22   23   31   19   18   30   15   30   18   25   14    20
  13  |    9    9   15   10   11   21    4   13    6   13   18    4 |    24   25   34   24   27   41   22   33   22   21   26    24
  14  |    7   10   16   10   11   18    3   13    7   12   16    5 |    18   19   23   21   22   27   16   24   17   22   18    17
  15  |   10    9   13    8    8   20    4   16    4    9   19    4 |    20   21   27   22   20   36   19   29   19   24   25    21
  16  |    7   11   12   10   12   15    4   12    5   11   20    4 |    16   17   24   17   13   25   14   25   16   25   13    17
  17  |    9   12   16    9   12   12    5   16    6    9   28    4 |    32   32   32   29   32   32   28   28   28   26   29    27
  18E |   10    9   12    9   10   15    3   10    4   10   16    3 |    34   36   36   36   32   40   33   40   34   37   34    35
  19  |   19   21   12    8   11   13    5   10    5   14   26    5 |    29   29   29   27   29   29   24   28   26   24   25    25
  20E |    9   12   10    9    9   14    4   10    5   11   12    4 |    26   30   36   29   28   33   27   34   28   29   32    29
  21  |    8    7   14    7   10   13    5   14    5    9   28    4 |    19   19   32   18   12   28   15   31   16   24   20    19
  22E |    9    8   13    7   11   16    3    9    5   11   12    4 |    36   37   35   32   32   34   32   36   34   33   34    34
  23  |   12   13   15   13   12   18    5   15    5   13   20    5 |    22   26   32   24   22   31   20   33   20   22   23    21
 X24  |   21   16  ---   10  ---   46   10  ---    9  ---  ---   14 |   109  112  ---  105  ---  116  106  ---  107  ---  ---   108
  25  |    9   10   23    9    8   12    4   17    6   13   11    5 |    25   24   24   23   23   33   20   33   21   28   22    22
  26  |    5    7   10    6   10   14    4    8    6   10   11    3 |    20   19   20   18   18   25   17   20   19   19   18    18
 X27  |   49    8  ---  ---  ---  ---   49  ---  ---  ---  ---    0 |    19   52  ---  ---  ---  ---   25  ---  ---  ---  ---    51
  28  |    8    6   10    7    9   13    4   11    5    9   10    3 |    17   17   21   14   19   27   14   20   17   21   18    17
  29  |    9   13   15   15    8   15    7   13    6   12   24    4 |    24   30   29   30   30   29   26   27   28   25   23    26
  30E |   16   18   19   11   13   16    5   16    9   12   35    5 |   109  110  111  106  106  110  105  112  102  110  115   107
  31  |   12   16   16    7   12   22    4   13    7   12   24    5 |    19   20   26   17   18   29   14   25   14   23   21    15
  32E |   18   18   20   12   10   18    5   17    8   14   13    5 |    35   37   50   37   32   47   35   48   34   41   35    38
------+-------------------------------------------------------------+--------------------------------------------------------------
 RMS  |   11   11   15    9   11   16    4   13    6   11   20      |T   29   31   33   30   27   37   28   33   29   30   28    30
 WRMS |   10   11   15    9   10   15    4   13    6   10   19      |NE  25   27   28   25   22   34   23   28   24   24   22    26
 MEDI |    9    9   15    9   11   15    4   13    5   11   18      |MD  24   25   30   24   26   32   22   29   24   25   24    24



Table 4: Precise Navigation Summary.

         Weekly station RMS w.r.t. the estimated coordinates for the Latitude,
         Longitude and Height components.  See Table 5 for the daily summary.

         CLK  - Satellite clocks used.
         EPO  - Mean number of satellite clock epochs available in the daily
                solutions.
         Units: mm.

Table 4.1712   GPS week: 1712   MJD: 56228.0-56234.0

CENT| CLK EPO  |        BRUX       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3031 |U    4     4    12 |U    7     9    23 |U    7     8    16 |
cof | cof 3031 |U    4     4    12 |U    7     9    23 |U    7     7    16 |
emr | emr 2870 |     8     7    18 |U    9     8    26 |    10    11    21 |
esa | esa 2976 |     5     4    14 |U    7    10    24 |     8     9    18 |
gfz | gfz 2868 |U    6     5    13 |U    7     8    23 |U    9    11    20 |
grg | grg 2933 |U    9     9    22 |U    8    11    30 |    10    11    23 |
igr | igr 2966 |     6     5    14 |     6     9    23 |     9     9    18 |
igs | igs 2968 |     6     5    15 |     7     9    24 |     8     8    17 |
jpl | jpl 2868 |     7     7    18 |U    7    10    26 |    10    11    24 |
mit | mit 2976 |     7     5    15 |U    8     9    27 |U    9     9    20 |



Table 5: Daily Precise Navigation Summary using the corresponding Centre orbit 
         positions and satellite clock corrections at 15 min intervals.

         Each line gives the daily station RMS w.r.t. the estimated coordinates 
         for the Latitude, Longitude and Height components.
        
         CLK  - Satellite clocks used.
         EPO  - Number of satellite clock epochs available for that day.
         Units: mm.

Table 5.1712.0   GPS week: 1712   Day: 0   MJD: 56228.0

CENT| CLK EPO  |        BRUX       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3038 |     4     4     9 |     7     8    26 |     5     4    11 |
cof | cof 3038 |     4     4     9 |     7     9    27 |     5     4    11 |
emr | emr 2872 |     8     8    12 |     9     7    30 |     7     7    16 |
esa | esa 2976 |     6     6    12 |     7     7    27 |     6     6    14 |
gfz | gfz 2873 |     7     7    10 |     7     7    25 |     6     6    15 |
grg | grg 2880 |     7     9    16 |     8     9    33 |     8     8    21 |
igr | igr 2976 |     7     6    12 |     7     7    26 |     6     6    14 |
igs | igs 2974 |     6     6    11 |     7     7    27 |     7     6    13 |
jpl | jpl 2869 |    12     8    15 |     7     7    29 |    10     9    38 |
mit | mit 2976 |     7     6    12 |     8     7    27 |     8     9    20 |

Table 5.1712.1   GPS week: 1712   Day: 1   MJD: 56229.0

CENT| CLK EPO  |        BRUX       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3030 |     3     3    12 |  ----  ----  ---- |     6     7    13 |
cof | cof 3030 |     3     3    11 |  ----  ----  ---- |     5     6    12 |
emr | emr 2872 |     7     5    18 |  ----  ----  ---- |     8     8    21 |
esa | esa 2976 |     4     3    15 |  ----  ----  ---- |     6     7    14 |
gfz | gfz 2870 |     6     3    13 |  ----  ----  ---- |     7     7    15 |
grg | grg 2975 |     7     8    20 |  ----  ----  ---- |     9    11    21 |
igr | igr 2948 |     5     3    12 |  ----  ----  ---- |     8     8    16 |
igs | igs 2965 |     5     3    15 |  ----  ----  ---- |     6     7    14 |
jpl | jpl 2871 |     7     6    18 |  ----  ----  ---- |     7     9    17 |
mit | mit 2976 |     5     3    13 |  ----  ----  ---- |     8     9    16 |

Table 5.1712.2   GPS week: 1712   Day: 2   MJD: 56230.0

CENT| CLK EPO  |        BRUX       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3037 |     5     4    11 |     6    11    21 |     7     6    16 |
cof | cof 3037 |     4     4    11 |     6    11    20 |     6     6    16 |
emr | emr 2871 |     8     8    18 |     9    12    29 |    10    10    22 |
esa | esa 2976 |     6     5    14 |     7    12    25 |     7     7    18 |
gfz | gfz 2870 |     5     6    13 |     7    10    25 |     8     8    19 |
grg | grg 2975 |     7     9    23 |     8    12    25 |    10     9    26 |
igr | igr 2967 |     6     6    14 |     7    11    25 |     7     7    17 |
igs | igs 2973 |     6     5    16 |     7    12    24 |     7     6    17 |
jpl | jpl 2870 |     6     7    19 |     7    13    28 |    11    11    22 |
mit | mit 2976 |     5     6    14 |     8    12    25 |     9     7    18 |

Table 5.1712.3   GPS week: 1712   Day: 3   MJD: 56231.0

CENT| CLK EPO  |        BRUX       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3039 |     4     5    12 |     6     9    24 |     8     8    16 |
cof | cof 3039 |     4     5    12 |     6     9    23 |     8     8    17 |
emr | emr 2872 |     7     6    14 |     8     7    27 |    11    10    17 |
esa | esa 2976 |     4     4    12 |     6    10    24 |    10     9    20 |
gfz | gfz 2868 |     5     5    11 |     6     7    26 |    10    25    29 |
grg | grg 2970 |     6     6    16 |     7     9    25 |    11     9    20 |
igr | igr 2953 |     5     4    13 |     6    10    24 |     9     8    19 |
igs | igs 2974 |     4     4    12 |     6     8    24 |     8     8    16 |
jpl | jpl 2868 |     6     6    16 |     7     9    28 |    11    11    21 |
mit | mit 2976 |     5     5    12 |     7     8    24 |    10     9    21 |

Table 5.1712.4   GPS week: 1712   Day: 4   MJD: 56232.0

CENT| CLK EPO  |        BRUX       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3035 |     4     5    14 |     5     8    19 |     8     9    19 |
cof | cof 3035 |     4     5    14 |     5     8    18 |     8     9    20 |
emr | emr 2867 |     8     7    21 |     7     8    19 |    10    11    20 |
esa | esa 2976 |     5     5    19 |     5    11    19 |     9    10    19 |
gfz | gfz 2867 |     5     7    19 |     5     9    21 |     9     9    19 |
grg | grg 2879 |     7     9    21 |     6    12    27 |    10     8    21 |
igr | igr 2966 |     6     6    19 |     5    11    18 |    10    10    22 |
igs | igs 2952 |     5     6    19 |     5     9    20 |    10    10    21 |
jpl | jpl 2865 |     6     7    20 |     6    11    19 |     9    11    20 |
mit | mit 2976 |     6     6    19 |     7    11    22 |    10     9    21 |

Table 5.1712.5   GPS week: 1712   Day: 5   MJD: 56233.0

CENT| CLK EPO  |        BRUX       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3019 |     5     5    14 |    10     9    28 |    10    12    21 |
cof | cof 3019 |     5     5    13 |     9     9    28 |     9    12    21 |
emr | emr 2868 |     8     7    20 |    12     8    28 |    14    19    28 |
esa | esa 2976 |     6     5    13 |     8     9    24 |    10    13    24 |
gfz | gfz 2866 |     6     6    13 |     9     7    21 |    12    16    25 |
grg | grg 2976 |    13    10    39 |    10    14    40 |    10    20    32 |
igr | igr 2976 |     6     5    14 |     8     8    23 |    10    14    23 |
igs | igs 2971 |     6     5    14 |     9     8    23 |     9    13    21 |
jpl | jpl 2867 |     7     9    18 |    10    10    28 |    12    17    27 |
mit | mit 2976 |    11     8    18 |     9     8    35 |    10    13    25 |

Table 5.1712.6   GPS week: 1712   Day: 6   MJD: 56234.0

CENT| CLK EPO  |        BRUX       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3022 |     7     4    16 |     6     9    20 |     9     8    18 |
cof | cof 3022 |     7     4    16 |     6     9    20 |     9     8    17 |
emr | emr 2868 |     9     6    22 |     8     9    23 |    11    12    25 |
esa | esa 2976 |     7     4    15 |     7    10    25 |    10     9    18 |
gfz | gfz 2866 |     7     5    15 |     6     8    22 |     8     8    19 |
grg | grg 2880 |    15    10    20 |     7    10    31 |    10    11    22 |
igr | igr 2976 |     7     4    15 |     6     9    24 |    10     9    18 |
igs | igs 2972 |     8     5    18 |     6    10    25 |     8     8    18 |
jpl | jpl 2867 |     8     7    21 |     7    10    27 |    11    11    23 |
mit | mit 2976 |    10     6    15 |     7    11    27 |     9     8    17 |


Table 6: Earth Orientation Parameters weekly summary.                          
                                                                              
        Weekly mean and standard deviation of Centre ERP, ERP rates and       
        LOD differences with respect to IGS combined values. See Table 7 for  
        the daily summaries.                                                  
                                                                              
        Xpole,Xrt: x pole and x pole rate                          
        Ypole,Yrt: y pole and y pole rate                       
        LOD      : Length Of Day                                               
                                                                              
        AC LOD BIAS    : 10-day mean LOD bias with respect to Bulletin A     
        AC LOD BIAS RMS: RMS of AC LOD BIAS                              
                                                                              
        FLAG: "u" (used), "x" (excluded), "-" (no submission)                 
              for Xpole, Ypole, Xrt, Yrt and LOD                              

Table 6.1712   GPS week: 1712   MJD: 56228.500-56234.500

                                                         AC LOD  AC LOD
CENT  FLAG  |   Xpole   Ypole     Xrt     Yrt    LOD |    BIAS  BIAS RMS
            |   [uas]   [uas]   [uas/d] [uas/d]  [us]|    [us]    [us]
------------+----------------------------------------+------------------
cod   xxxxx |       2     -31       3     109     -2 |       0     13
            |      23      24     125     134      6 |       3
cof   uuuuu |     -24     -43       1       9     -5 |      -3     14
            |      17      13      63      76      4 |       2
emr   uuuuu |      27     -20      84     146      7 |      15     21
            |      31      18      86     129     11 |       3
esa   uuuuu |     -43     -29     -22    -147     -4 |      -1     13
            |      35      37      80      68      4 |       2
gfz   uuuuu |      66      35     -10     -78     -5 |       8     14
            |      26      11      39      32      4 |       2
grg   uuuux |      -8     -28      24     -61    -19 |      -2     36
            |      33      20      68      37     37 |      10
igr   xxxxx |     -50      33     -17      -5     -2 |       1     12
            |      20      16      44      91      4 |       2
irf   xxxxx |       8       2      15      -6     -1 |      -2      8
            |      17       8      13      23      3 |       1
jpl   uuuuu |      11     -44     -13     148     -1 |      38     41
            |      23      31      48      59      5 |       2
mit   uuuuu |      24       5      -6      40      2 |      -6     13
            |      12      17      54      49      7 |       2
ngs   uuuxu |     -33     102     -26      72      2 |       5     10
            |      42      51      99     269      4 |       2
sio   xuuuu |     188     -64     -27     -55     17 |      16     23
            |     100      41      63      94      3 |       4


Table 7.1712.0   GPS week: 1712   Day: 0   MJD: 56228.500

                                                         AC LOD  AC LOD
CENT  FLAG  |   Xpole   Ypole     Xrt     Yrt    LOD |    BIAS  BIAS RMS
            |   [uas]   [uas]   [uas/d] [uas/d]  [us]|    [us]    [us]
------------+----------------------------------------+------------------
cod   xxxxx |      33      -9     215     -80     -3 |       3     19
cof   uuuuu |      -2     -66      30      26     -5 |       0     19
emr   uuuuu |      65     -56     188     263     -3 |      15     24
esa   uuuuu |    -100      28      58    -165     -7 |       2     19
gfz   uuuuu |      89      31     -77     -41     -4 |      10     19
grg   uuuux |      50     -39     130     -52     22 |     -19     55
igr   xxxxx |     -59      45      -1    -137      1 |       2     16
irf   xxxxx |      34      -8      -3      31      1 |       0     13
jpl   uuuuu |      12     -68     -91     158     -4 |      40     43
mit   uuuuu |      33       0     -66      79      6 |      -4     17
ngs   uuuxu |      -5     150     -81    -311     -3 |       7     16
sio   xuuuu |     127     -83      33     -83     18 |      13     22

Table 7.1712.1   GPS week: 1712   Day: 1   MJD: 56229.500

                                                         AC LOD  AC LOD
CENT  FLAG  |   Xpole   Ypole     Xrt     Yrt    LOD |    BIAS  BIAS RMS
            |   [uas]   [uas]   [uas/d] [uas/d]  [us]|    [us]    [us]
------------+----------------------------------------+------------------
cod   xxxxx |     -19     -40      11     263      3 |       0     16
cof   uuuuu |     -20     -52      70      64     -5 |      -4     16
emr   uuuuu |      60      -1      14     294     -5 |      12     21
esa   uuuuu |     -17     -45      67    -160      1 |      -2     16
gfz   uuuuu |      72      30     -13     -86     -5 |       7     16
grg   uuuux |      -3       5      34     -50      6 |     -14     53
igr   xxxxx |     -30      19      32     -55     -3 |      -1     14
irf   xxxxx |      14      17      24       1      2 |      -4      8
jpl   uuuuu |      -1     -47      -6     162      2 |      37     40
mit   uuuuu |      29      36     -53      26      4 |      -7     14
ngs   uuuxu |    -118      73     -89     -19     -3 |       3      9
sio   xuuuu |      50     -34       8      56     20 |      11     18

Table 7.1712.2   GPS week: 1712   Day: 2   MJD: 56230.500

                                                         AC LOD  AC LOD
CENT  FLAG  |   Xpole   Ypole     Xrt     Yrt    LOD |    BIAS  BIAS RMS
            |   [uas]   [uas]   [uas/d] [uas/d]  [us]|    [us]    [us]
------------+----------------------------------------+------------------
cod   xxxxx |      17     -42    -216     153     -9 |       2     16
cof   uuuuu |     -17     -34     -39      88     -9 |      -2     13
emr   uuuuu |      50     -21      84     264      2 |      14     22
esa   uuuuu |     -55     -22       9    -170    -10 |       1     14
gfz   uuuuu |      98      51       9     -94      2 |       9     16
grg   uuuux |       2     -25      -6     -19     16 |      -4     42
igr   xxxxx |     -28      53     -34     -19      0 |       1     13
irf   xxxxx |      17       6      32      10     -1 |      -3      8
jpl   uuuuu |      16     -30       2     248    -10 |      40     42
mit   uuuuu |      20       1      56      49      6 |      -8     14
ngs   uuuxu |     -22     111     -83    -138      1 |       3     10
sio   xuuuu |     160     -42    -146     -90     20 |      15     22

Table 7.1712.3   GPS week: 1712   Day: 3   MJD: 56231.500

                                                         AC LOD  AC LOD
CENT  FLAG  |   Xpole   Ypole     Xrt     Yrt    LOD |    BIAS  BIAS RMS
            |   [uas]   [uas]   [uas/d] [uas/d]  [us]|    [us]    [us]
------------+----------------------------------------+------------------
cod   xxxxx |       3      13      -7      32    -11 |       2     16
cof   uuuuu |     -46     -29     -60     -90    -12 |      -2     14
emr   uuuuu |      -2     -21      25     107     -3 |      15     22
esa   xxxxx |       5      -9     -49    -262     -2 |       0     15
gfz   uuuuu |      60      23      -4    -115     -7 |      10     15
grg   uuuux |       6     -28      62    -115     -8 |       8     23
igr   xxxxx |     -71      41     -50     -77     -9 |       2     12
irf   xxxxx |      -3       1      15     -35      0 |      -3      9
jpl   uuuuu |     -26       5       1     151     -2 |      39     42
mit   uuuuu |       1      -8      36      52      7 |      -8     14
ngs   uuuxu |      15      68     -79     -46      3 |       4      9
sio   xuuuu |     135     -20     -27    -179     16 |      16     23

Table 7.1712.4   GPS week: 1712   Day: 4   MJD: 56232.500

                                                         AC LOD  AC LOD
CENT  FLAG  |   Xpole   Ypole     Xrt     Yrt    LOD |    BIAS  BIAS RMS
            |   [uas]   [uas]   [uas/d] [uas/d]  [us]|    [us]    [us]
------------+----------------------------------------+------------------
cod   xxxxx |     -23     -52      18     189     -1 |      -4      9
cof   uuuuu |     -36     -35     -87      -6      3 |      -6     12
emr   uuuuu |      -3     -19     175      84     20 |      11     17
esa   xxxxx |     -22     -94     -11    -139     -1 |      -3     11
gfz   uuuuu |      66      38      -7    -104     -8 |       6     10
grg   uuuux |     -46     -61      58     -91    -47 |       7     23
igr   xxxxx |     -75      38     -37      77      4 |      -1     10
irf   xxxxx |     -19      -4      22     -29     -7 |      -4      9
jpl   uuuuu |       2     -18      52     132     -1 |      36     37
mit   uuuuu |      21      15     -45      -7    -13 |      -5     11
ngs   uuuxu |     -31      42     -34     298      5 |       3      8
sio   xxxxx |     246     -37     -37     -20     18 |      16     22

Table 7.1712.5   GPS week: 1712   Day: 5   MJD: 56233.500

                                                         AC LOD  AC LOD
CENT  FLAG  |   Xpole   Ypole     Xrt     Yrt    LOD |    BIAS  BIAS RMS
            |   [uas]   [uas]   [uas/d] [uas/d]  [us]|    [us]    [us]
------------+----------------------------------------+------------------
cod   xxxxx |      25     -39      20     -27      1 |      -2      9
cof   uuuuu |      -9     -38      21     -94     -4 |      -4     11
emr   uuuuu |      19     -23     138     -41     22 |      17     21
esa   uuuuu |     -61     -30    -162     -74     -2 |       0      9
gfz   uuuuu |      62      24     -30     -28     -8 |       8     11
grg   uuuux |     -21     -24     -45     -83    -73 |       5     24
igr   xxxxx |     -56       6     -72      78     -3 |       3      9
irf   xxxxx |      15       3      13      -7      3 |      -2      6
jpl   uuuuu |      40     -73     -64     138      6 |      39     39
mit   uuuuu |      36     -14      59     113      7 |      -4     10
ngs   uuuxu |     -23     188     188     305      0 |       6      9
sio   xxxxx |     245    -109      35    -137     16 |      21     26

Table 7.1712.6   GPS week: 1712   Day: 6   MJD: 56234.500

                                                         AC LOD  AC LOD
CENT  FLAG  |   Xpole   Ypole     Xrt     Yrt    LOD |    BIAS  BIAS RMS
            |   [uas]   [uas]   [uas/d] [uas/d]  [us]|    [us]    [us]
------------+----------------------------------------+------------------
cod   xxxxx |     -21     -51     -19     235      5 |      -2      9
cof   uuuuu |     -40     -48      72      75     -4 |      -5     12
emr   uuuuu |      -1      -2     -34      47     14 |      20     24
esa   xxxxx |     -48     -31     -67     -58    -10 |      -1      9
gfz   uuuuu |      18      50      52     -76     -6 |       6      9
grg   uuuux |     -46     -23     -65     -18    -50 |      -1     33
igr   xxxxx |     -33      26      46      99     -2 |       2      9
irf   xxxxx |       0       0       1     -13     -2 |      -1      6
jpl   uuuuu |      35     -74      12      47      5 |      39     39
mit   uuuuu |      28       3     -31     -30     -2 |      -2      8
ngs   uuuxu |     -46      83      -3     412      8 |       6      9
sio   xxxxx |     352    -125     -57      70     11 |      23     28



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