[IGSREPORT-21423] Wk 1712 IGS Final Orbits [Resubmission]

IGS ACC igs.acc at noaa.gov
Mon Dec 17 08:05:40 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 at each SP3 epoch. 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 with broadcast GPS time, the IGS clocks use
the linear combination of phase-smoothed P1 and P2 pseudorange data to remove
the 1st order ionospheric delay, with no other delay calibrations 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 over each daily arc. 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 10 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, GRG, MIT, and
    JPL. The other centres are excluded because of poorer consistency, they provide
    broadcast clocks, or clock corrections are not provided (SIO). The clock
    information not used is still compared to the 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.

 2. Rapid (IGR) orbits/clocks are included in the combination for statistics only.
    Starting week 1582, a new orbit solution from CNES/GRGS (GRG) is included with
    weight. GRG clocks are included with weight starting 12-Aug-2012 (GPS Week
    1701, day 0, MJD 56151), after a procedural change to generate estimates in
    the center-of-figure frame instead of the center-of-mass frame. GRG LOD
    estimates are included for comparison only.

 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  |  COD   | 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  |  COD   | 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  |  COD   | 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   | 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  |  COD   | 18 22 30 32 18 22 32 KOUC MATE MOBS ALRT FLRS KOUC
                4  |  COD   | 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  |  COD   | 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 YAKT
                5  |  GRG   | WSRT ADIS THTI WSRT
                5  |  JPL   | 10
                5  |  MIT   | 2 10 21 2 10 21 24 GMAS
                6  |  COD   | 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. 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 AC clocks are
    corrected for the radial offsets of their satellite orbits compared to the
    combination.

 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 RX, RY and RZ 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 |     .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    1.1     .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 |    1.1    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 |    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 |     .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 |     .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 |     .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. As inidicated in the previous remarks, the IGS final orbits are aligned to the
    IGS reference frame by pre-aligning each AC orbit with the 3 corresponding
    SINEX rotations. This approach began 27-Feb-2000 (GPS Week 1051-0; MJD 51601).
    Starting sometime prior to 19-Aug-2012 (GPS Week 1702; MJD=56158), the orbit
    combination procedures used an incorrect sign convention to apply the SINEX
    RX and RY values to the AC orbits.
    
    Also starting 27-Feb-2000 (GPS  Week 1051-0; MJD 51601), the AC orbits were
    pre-aligned using rotations derived from differences between AC and IGS
    combined x and y polar motion. These ERP rotations were intended to
    approximate day-to-day variations of the AC orbital frames when only weekly
    averaged AC TRF rotations were available (For more details, see IGSMAIL
    #2750). With the change to daily SINEX integrations starting 19-Aug-2012, the
    ERP rotations are no longer needed/applied.

10. 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; from GPS Week 1632 through 1648 the JPL solution is excluded from the
    weekly SINEX combination.


ORBIT COMBINATION AND EVALUATION STATISTICS:                                    
--------------------------------------------                                    

Most combination statistics are with respect to the combined orbits and
consist of seven 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 part, 
Table 5, is similar to Table 4 and contains daily precise navigation
statistics (Tables 5.1712.0-6). The sixth part, Table 6, is a weekly
summary of daily ERP combination statistics. The seventh part, Table 7,
contains the daily ERP statistics. But this is not the IGS official ERP
combination products (which come from the accompanying SINEX combination)
but provided to check combination consistency, etc.

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  254|    1     0     0    18    73    17  -.43   12   12 |    -641    -310     20     95
        |    1     0     1    25    23    16   .01           |     827    1403
emr   80|   -2     0     1    -8    61    11   .27   15   15 |    2423     333     15    100
        |    1     1     1    27    30    17   .04           |     854     583
esa  175|    0     0     1   124  -168    16   .04    6    6 |   -1326    1091     12    115
        |    0     0     1    20    50    12   .03           |     743     814
gfz  184|   -1     0    -1  -121   -39    14  -.42   12   12 |    -139     216     21    142
        |    1     0     1    36    71    17   .04           |     285     336
grg  126|    0     0    -1    -8    85   -21   .44   15   14 |    -168     109     14    156
        |    1     1     1    13    23    21   .05           |     327     467
igr  n/a|    0     0     0   -53   131   -18  -.15    4    4 |    4350     496     16    100
        |    0     0     0    27    41     8   .01           |     851     549
jpl   80|   -1     0     1    -1    90    10   .42   14   13 |    3233      85     17    160
        |    1     1     1    41    35    11   .03           |     979     524
mit  239|    0     0    -1   -26    45     5  -.16    6    6 |    -122    -107     21    200
        |    0     0     0    28    32    12   .02           |     394     567
ngs  239|    0     0     1   -99   118     9   .39   11    9 |    -684    -239   1706   3441
        |    0     1     3    48    20    29   .01           |     590    1025
sio  272|   -1    -1     0    34  -134  -167  -.19   17   16 |     ---     ---    ---    ---
        |    0     1     1    44    88    65   .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    3    4    4    3 |
   2  |    4    4    4    4    4    5    4 |
   3  |    3    3    3    3    3    4    4 |
   4  |    4    4    4    3    4    3    3 |
   5  |    4    3    4    4    4    4    4 |
   6  |    3    3    3    3    4    3    3 |
   7  |    4    4    4    4    4    5    4 |
   8  |    4    3    3    3    3    3    3 |
   9  |    4    3    3    4    4    4    3 |
  10  |    6    6    6    6    5    5    5 |
  11  |    4    3    4    3    4    4    4 |
  12  |    4    4    5    5    5    5    5 |
  13  |    4    4    4    4    4    4    4 |
  14  |    4    4    4    3    4    4    4 |
  15  |    4    4    4    4    4    4    4 |
  16  |    4    4    4    4    4    4    4 |
  17  |    4    4    4    4    4    4    4 |
  18  |    3    4    4    3    4    4    3 |
  19  |    4    5    5    5    4    5    4 |
  20  |    3    3    4    4    4    3    3 |
  21  |    4    4    4    4    4    4    4 |
  22  |    3    3    3    3    4    4    3 |
  23  |    4    4    4    4    5    5    4 |
  24  |    8    8    9    7    9    9   10 |
  25  |    5    4    5    5    4    4    4 |
  26  |    3    3    3    4    3    3    3 |
  27  |    0    0    0    0    0    0    0 |
  28  |    3    3    3    4    3    4    3 |
  29  |    4    4    4    4    4    4    4 |
  30  |    4    4    5    5    5    5    5 |
  31  |    4    4    4    4    4    4    5 |
  32  |    4    4    4    4    5    5    5 |



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  259|    1     0     0    57    81    17  -.43   11   11 |   -1364     401     18    106
emr   80|   -1     1     1    29    59    23   .24   14   14 |    1772     628     12    106
esa  175|    0     1     2    96   -78    28   .05    6    6 |   -1317     788     11    161
gfz  187|   -2     0    -2  -159  -131    -3  -.35   12   11 |     197      69     21    190
grg  128|   -1     2    -3    16    59   -50   .46   17   15 |    -463     398     16    152
igr  n/a|    0    -1     0   -48   157   -21  -.15    4    4 |    3370     473     16    108
jpl   80|    0     0     0    48   110     7   .41   12   12 |    2878     613     16    154
mit  240|    0     0    -2   -35   -12   -11  -.15    6    6 |    -371     291     20    241
ngs  242|    0    -1     5  -112   128     9   .41   13   10 |   -1305     270   1737   3593
sio  285|    0    -3    -1     3   -90  -102  -.20   18   15 |     ---     ---    ---    ---

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  259|    1     0    -2    17    31    19  -.42   12   12 |   -1821    1601     22     96
emr   80|    0     2     2   -10     5    34   .25   15   15 |    1849     880     13    103
esa  175|    0     0     0   147  -235    30   .07    7    7 |   -1681    1906     12    111
gfz  189|    0     0     0  -117    63     0  -.40   11   11 |     -73      55     22    141
grg  128|   -1     1    -2   -12    68   -11   .41   14   14 |    -578     628     14    169
igr  n/a|    1     0     0   -33    61   -16  -.16    4    4 |    3380    1006     17    107
jpl   80|   -2     0     0     7    54    14   .44   13   13 |    3213     718     16    163
mit  240|    1     0    -1   -44    72    13  -.17    5    5 |    -621     715     21    205
ngs  241|    0     0     2   -51    88   -24   .40   12    9 |   -1453    1049   1544   3273
sio  214|    0    -3     0     4     4  -230  -.23   17   15 |     ---     ---    ---    ---

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  258|    2     0    -3    -5    66    20  -.43   15   14 |    -355    -443     19     79
emr   80|    0     2     2   -24    44    16   .26   14   14 |    2764     534     15    103
esa  175|    0     0     1    94  -156    10  -.00    7    6 |   -1590    1398     11    102
gfz  188|   -2     0    -2   -60   -22    12  -.43   12   11 |     -89    -222     19    124
grg  127|   -1     0     1   -21    58   -22   .49   15   14 |     177    -628     15    161
igr  n/a|    0     0     0   -90   109   -32  -.15    4    4 |    4433     530     16     86
jpl   80|    0    -1     2   -26    90     9   .38   14   13 |    3960     163     17    152
mit  240|    0     0    -1    11    56    -5  -.17    6    6 |     -22    -196     19    173
ngs  240|    0     1     0  -142    91   -19   .40   12    9 |    -367    -489   1433   3190
sio  282|    0    -1     0    48  -115   -80  -.19   16   15 |     ---     ---    ---    ---

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  254|    2    -1     2    26   111    29  -.43   13   13 |     793   -3013     21     91
emr   80|    0     0     2    17   106    16   .23   15   15 |    4043    -558     15    107
esa  175|    1     0     2   135  -184    18   .07    6    6 |    -204     307     12    126
gfz  186|   -2    -2    -4  -122  -123    42  -.44   14   14 |     176     405     24    159
grg  126|    0     0    -1     0   116   -33   .48   16   15 |     340    -285     14    147
igr  n/a|    0     0     0   -39   187    -5  -.17    4    4 |    5697    -391     16    119
jpl   80|   -3     0     2   -16   154    10   .41   13   13 |    4726    -496     16    158
mit  240|    0     0    -1   -68    29     0  -.19    5    5 |     635   -1002     22    203
ngs  239|    2     0    -2   -36   127    26   .39   11    9 |     317   -2277   1771   3630
sio  280|   -2     0     0   -12   -98  -189  -.20   16   16 |     ---     ---    ---    ---

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  251|    0     0     0   -20    78    40  -.43   11   11 |    -409    -661     23     98
emr   80|   -3     0     2   -55    76    12   .30   16   16 |    2743    -340     18     79
esa  175|    0     1     0   126  -179     9   .03    6    6 |    -522    -124     15    119
gfz  178|    0     0     1   -90   -53    33  -.47   12   12 |    -206     196     22    127
grg  128|    1    -2     0   -20   109    10   .43   15   14 |    -254     337     17    163
igr  n/a|    1     0     0   -94   151   -14  -.13    4    4 |    4817     -58     18    100
jpl   80|   -1    -2     0   -73    94    31   .41   14   13 |    3695    -694     22    155
mit  240|    1     0    -1     8    78     8  -.17    7    7 |    -229     188     25    200
ngs  235|    0    -1     0  -115   138   -13   .40   11    9 |    -572    -261   1795   3458
sio  284|    0    -1     1    15  -163  -250  -.18   17   15 |     ---     ---    ---    ---

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  250|    2     0     0    32    78     4  -.45   12   12 |    -699    -192     21    106
emr   80|   -5     0     0     0    72    -4   .30   16   16 |    1553     933     16    105
esa  175|    1     0     0   142  -140    22   .04    6    6 |   -2403    2092     11    100
gfz  183|   -1     0    -2  -146   -31     8  -.44   14   13 |    -402     166     20    117
grg  124|    0     0    -2    -2    88   -38   .33   16   15 |    -183    -159     14    154
igr  n/a|    0     0     0   -25   146   -16  -.14    4    4 |    3927    1077     19     88
jpl   80|   -4     0     2    34    74     6   .45   14   13 |    2106     224     18    173
mit  239|    0     0     0   -35    27     5  -.16    6    5 |    -240    -548     21    189
ngs  240|    1     0     0  -167   136    49   .37   11   10 |    -737    -123   1983   3512
sio  281|   -1     0     0    68  -204  -191  -.20   17   17 |     ---     ---    ---    ---

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  253|    0     0     0    24    63   -11  -.42   11   11 |    -637     135     18     89
emr   80|   -1     0    -2   -17    61   -16   .34   16   16 |    2242     255     17    102
esa  175|    0     0     0   126  -203    -5   .06    7    7 |   -1570    1275     12     90
gfz  181|    0    -2     0  -154    25     6  -.41   10    9 |    -582     848     19    140
grg  127|    0     0    -1   -15    95    -3   .45   16   15 |    -218     476     13    147
igr  n/a|    0     0     0   -40   104   -23  -.13    4    4 |    4829     839     15     96
jpl   80|   -1    -1     0    15    52    -4   .45   14   14 |    2056      71     16    169
mit  239|    0     0    -2   -23    65    25  -.13    5    5 |     -10    -202     21    189
ngs  240|    0     0     7   -72   117    37   .41   11   10 |    -673     158   1682   3431
sio  278|   -1     0     3   112  -271  -127  -.14   19   18 |     ---     ---    ---    ---

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

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

        Weighted Average                                            Orbit Dynamics (7 days)
 PRN  |  cod  emr  esa  gfz  grg  igr  jpl  mit  ngs  sio  IGS |   cod  emr  esa  gfz  grg  igr  jpl  mit  ngs  sio   IGS
------+--------------------------------------------------------+---------------------------------------------------------
   1  |   13   16   10    9   12    3   11    6    8   10    3 |    26   33   37   29   44   34   49   34   38   36    34
   2  |    7   19    9   15   11    4   16    5   10   23    4 |    20   34   26   23   28   21   31   21   23   16    22
   3  |   10    9    3   12   12    4    8    4   14   16    3 |    18   27   20   22   25   19   26   19   23   18    20
   4  |    4   12    5    9   10    4    8    4   14   30    3 |    39   35   33   39   34   38   35   38   33   39    36
   5E |    7   17    5    9   12    3   15    4    9   15    3 |    33   42   33   30   40   33   38   33   37   32    34
   6  |   10   10    4   11   10    3    7    4   15   11    3 |    21   30   22   25   27   22   29   20   27   20    22
   7  |   13   13    7   13   14    4   14    5   11   15    3 |    23   29   22   23   27   24   28   21   24   25    21
   8  |    9   12    5    7   10    4   11    5    9   13    3 |    17   24   14   15   16   16   22   15   16   22    14
   9  |   12   11    6   10   13    5    9    6    9   17    3 |    16   28   20   18   25   18   25   18   18   23    18
  10E |   16   20   11   12   22    5   16    5   27   19    5 |    27   42   31   26   36   29   39   30   40   29    28
  11  |    9   15    7    8   14    6   12    4   10   10    3 |    23   36   28   23   36   25   36   25   25   27    26
  12  |   17   20    7    9   14    4   20    6    8   16    4 |    26   32   24   21   31   23   30   21   28   22    22
  13  |   10   14    6   12   19    3   14    4   11   12    3 |    22   31   21   21   36   22   32   21   24   25    21
  14  |   11   15    8   11   13    3   12    4   12   15    3 |    23   30   19   23   26   20   28   19   23   23    19
  15  |   14   15    5    8   21    4   15    5   10   20    4 |    15   25   19   16   36   18   27   18   23   19    18
  16  |   10   13    6   11   16    4   13    4    9   17    3 |    19   28   21   22   31   20   25   21   23   15    20
  17  |   10   16    7   14    8    4   14    4   10   24    4 |    20   30   23   24   26   25   27   24   21   24    22
  18E |   20   12    8   12   12    3    9    4   11   12    3 |    30   29   23   26   31   24   29   27   26   28    25
  19  |   29   12    6   10   11    6   14    7   17   22    4 |    32   28   21   18   24   20   28   18   20   19    20
  20E |   10   12    6    8   10    4   13    5   10   16    3 |    43   46   43   41   47   43   47   42   40   45    42
  21  |   10   16    7   12   13    5   13    5   13   16    3 |    14   30   15   14   27   16   28   15   23   15    16
  22E |    8   11    8   11   16    2   10    4    6   10    3 |    18   26   23   18   27   21   31   20   24   23    20
  23  |   10   18    5   11   16    3   17    5    9   16    3 |    23   29   21   18   31   22   30   22   25   21    20
 X24  |   21  ---   12  ---   21   12  ---   10  ---  ---    8 |   ---  ---   72  ---   82   76  ---   76  ---  ---    73
  25  |   10   24    9   12   15    4   18    5   10   17    4 |    22   31   23   24   34   24   32   22   24   30    22
  26  |    9   10    5    9   13    3    8    2    6   15    2 |    25   33   27   25   33   27   30   29   30   26    27
 X27  |    7  ---  ---  ---  ---  130  ---  ---  ---  ---    0 |    79  ---  ---  ---  ---   62  ---  ---  ---  ---    81
  28  |    9   16    7    8   14    4   12    5    9    7    3 |    17   28   18   17   29   17   25   18   22   19    17
  29  |   13   19    5   13   14    4   16    5   11   23    4 |    25   30   21   23   25   21   28   20   24   19    20
  30  |   10   14    6   15   14    3   15    8   10   24    4 |    63   66   65   67   64   62   68   63   63   63    63
  31  |   13   19    7   14   16    4   17    6   10   16    4 |    16   28   16   17   27   18   29   16   24   17    15
  32E |   16   15    7    7   15    5   14    7   17   12    4 |    34   45   37   30   45   36   46   36   45   39    37
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |   12   15    7   11   14    4   13    5   12   17      |T   26   32   27   24   33   28   32   26   27   25    27
 WRMS |   12   15    7   11   14    4   13    5    9   15      |NE  24   29   24   21   31   25   29   23   24   22    25
 MEDI |   10   15    7   11   14    4   13    5   10   16      |MD  23   30   23   23   31   22   29   21   24   23    22

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

        Weighted Average                                            Orbit Dynamics (7 days)
 PRN  |  cod  emr  esa  gfz  grg  igr  jpl  mit  ngs  sio  IGS |   cod  emr  esa  gfz  grg  igr  jpl  mit  ngs  sio   IGS
------+--------------------------------------------------------+---------------------------------------------------------
   1  |   13   16   10    9   11    5   11    8    9   10    3 |    26   32   33   33   46   33   45   33   38   37    34
   2  |   12   14    7   15   13    3   13    6   10   23    4 |    16   30   23   23   25   21   27   21   26   14    20
   3  |    9    7    4   12   13    4    8    4    8   19    3 |    12   23   18   25   26   16   21   17   23   15    18
   4  |   11   11    6   12   11    2   11    4   10   28    3 |    29   22   23   27   23   24   22   22   27   28    22
   5E |    9   14    7   11   11    4   14    6   12   17    3 |    37   45   43   45   42   41   42   41   40   49    41
   6  |    8    7    4   14   10    3    7    4   11   14    3 |    18   24   21   30   26   18   24   21   24   18    20
   7  |   13   14    6   13   13    4   20    5    8   12    3 |    16   23   15   20   25   16   23   15   22   16    15
   8  |   10   11    5   12   12    3   13    5    8   11    3 |    14   20   13   18   17   16   19   16   19   20    13
   9  |   13    9    4   12   11    3    9    4   10   15    3 |    14   20   15   14   21   15   22   14   24   17    14
  10E |   30   21   12   13   21    7   15    9   30   16    6 |    33   33   25   22   26   19   28   22   35   21    21
  11  |   10   17    6    6   12    3   13    7   15   11    3 |    24   34   24   26   36   23   32   25   25   26    25
  12  |   11   20    6   17   19    3   22    6   13   16    4 |    21   27   23   29   30   23   28   21   30   20    20
  13  |   10   15    7   12   15    4   14    5    9   12    3 |    17   29   20   23   36   21   28   20   24   19    20
  14  |   11   17    6   12   13    4   12    5    9   12    3 |    15   24   17   19   22   17   22   14   21   15    15
  15  |   16   11    4   11   15    4   15    5    8   18    3 |    16   25   19   17   30   19   25   19   26   18    18
  16  |   12   16    8    9   15    4   15    8   11   16    4 |    16   24   17   17   30   17   22   17   24   12    16
  17  |   13   16    7   16   11    5   15    6   10   24    4 |    28   26   20   29   26   24   26   22   31   23    23
  18E |   20    9    8   12   16    4   11    5   11   10    3 |    34   29   31   30   38   31   33   27   32   30    29
  19  |   33   11    6   10   10    4   12    5    8   22    4 |    30   25   20   25   24   17   24   20   22   20    20
  20E |   10   10    6    9   18    4   15    5    9   13    3 |    36   40   36   37   43   37   38   38   38   41    36
  21  |   11   14    6   12   13    4   15    6   12   18    3 |    13   26   19   16   27   16   27   14   26   12    16
  22E |    8   10    6   12   18    3   11    6    8    8    3 |    15   19   18   16   20   16   20   16   20   16    14
  23  |   13   17    6   12   15    4   16    6   14   15    4 |    19   27   18   20   28   19   26   19   22   18    18
 X24  |   26  ---   10  ---   20   12  ---   10  ---  ---    8 |   ---  ---   88  ---   92   91  ---   91  ---  ---    90
  25  |   17   23   10   12   17    3   17    5    8   18    4 |    23   24   23   21   32   22   31   21   28   29    21
  26  |    9    9    4   12   13    3    7    5   10   12    3 |    16   21   19   16   25   18   20   18   21   19    17
 X27  |    8  ---  ---  ---  ---   41  ---  ---  ---  ---    0 |    35  ---  ---  ---  ---   38  ---  ---  ---  ---    36
  28  |    9   14    4   13   17    6    9    7    8    8    3 |    13   23   17   17   30   16   20   18   21   16    15
  29  |   13   15    6   13   14    4   16    7   10   25    4 |    21   27   24   28   26   26   26   28   31   21    23
  30E |   16   17    9   15   22    5   15   10   11   24    5 |    69   73   64   64   68   64   73   61   65   67    64
  31  |   16   15    9   13   17    4   16    7   10   12    4 |    20   25   18   17   27   17   25   13   23   13    13
  32E |   15   18    7   10   15    4   14    7   19   10    4 |    31   43   35   29   41   33   43   33   42   34    34
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |   15   14    7   12   15    4   14    6   12   16      |T   23   28   25   25   32   25   28   25   28   23    25
 WRMS |   14   14    6   11   14    4   13    6    9   15      |NE  19   25   22   22   30   23   25   22   25   19    22
 MEDI |   12   14    6   12   14    4   14    6   10   15      |MD  20   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  emr  esa  gfz  grg  igr  jpl  mit  ngs  sio  IGS |   cod  emr  esa  gfz  grg  igr  jpl  mit  ngs  sio   IGS
------+--------------------------------------------------------+---------------------------------------------------------
   1  |   13   17    4   13   13    4   10    3    7   11    3 |    25   30   32   34   45   31   45   32   39   36    33
   2  |    7   17    8   16   13    4   14    6   11   21    4 |    19   29   21   22   25   17   28   19   25   16    20
   3  |   10    9    5   12   12    3    8    5    9   19    3 |    15   21   18   24   22   18   22   16   24   17    17
   4  |    7    9    6   11   11    4   10    3    9   25    3 |    29   24   25   34   27   27   24   29   30   29    27
   5E |   11   13    5   12   17    3   14    5   10   10    3 |    51   49   50   50   45   47   46   46   51   46    48
   6  |    9   10    5   14   11    4    8    5   11   16    3 |    20   24   22   29   26   22   25   21   23   24    21
   7  |   14   15    5   12   17    4   14    5   10   13    3 |    23   24   16   22   26   15   23   17   23   16    18
   8  |   10   10    3   13   18    4   11    4    7   13    3 |    15   17   12   18   16   10   18   13   16   16    13
   9  |   16   11    5   15   10    3   11    5    8   17    3 |    17   21   17   18   20   16   23   16   21   18    17
  10E |   16   20   10   13   27    6   16    7   24   15    5 |    32   35   29   30   33   26   34   28   38   27    28
  11  |    8   15    6   11   15    4   12    4    9   12    3 |    22   34   25   27   38   24   33   24   28   25    25
  12  |   16   20    7   13   17    4   22    7   14   15    4 |    20   27   21   22   29   18   26   20   28   16    19
  13  |   11   14    6   17   20    4   12    5    8   11    3 |    23   28   22   28   36   21   28   21   20   20    22
  14  |   12   15    4   13   11    3   13    4   10   12    3 |    21   25   23   20   24   19   25   17   20   17    17
  15  |   11   14    6   11   16    4   14    4   15   17    3 |    18   23   19   22   30   14   25   16   21   17    17
  16  |   14   16    7   13   18    6   13    5    7   15    3 |    20   23   22   19   27   17   22   14   23   15    16
  17  |   10   16    7   20   11    4   16    5   11   23    4 |    21   26   26   34   27   23   26   24   23   23    23
  18E |   10   10    7   11   17    4   12    4    9    7    3 |    30   35   35   29   37   32   37   30   34   33    31
  19  |   29   12    7   13   11    4   10    5    9   22    4 |    27   25   25   29   27   24   26   22   27   23    23
  20E |   10   10    9   12   22    3   15    3   11   11    3 |    37   36   38   40   47   35   39   36   32   35    36
  21  |   11   16    5   12   15    4   14    4    8   19    3 |    17   29   17   17   25   15   26   14   19   13    16
  22E |    9   11    7   13   18    3   10    5    9    8    3 |    24   24   23   21   18   21   25   18   22   18    19
  23  |   14   16    5   18   14    4   15    4   11   14    4 |    21   26   19   25   27   17   24   18   21   17    18
 X24  |   22  ---   11  ---   17    9  ---    7  ---  ---    7 |   ---  ---   96  ---  107   98  ---   99  ---  ---    99
  25  |   18   24    6   12   15    3   17    4   15   12    4 |    22   23   25   30   32   22   29   22   27   25    22
  26  |   13   12    6   11   14    5    8    8   10   11    3 |    19   25   20   23   27   19   26   24   21   20    21
 X27  |   10  ---  ---  ---  ---   52  ---  ---  ---  ---    0 |    53  ---  ---  ---  ---   44  ---  ---  ---  ---    57
  28  |   11   14    6   15   18    5   12    5    9    9    3 |    16   21   16   23   28   12   21   14   19   16    15
  29  |   10   15    8   10   13    7   15    6   14   24    4 |    22   26   23   30   23   25   26   26   28   21    23
  30E |   18   17    8   20   22    7   18    8   11   20    5 |   135  130  130  121  127  129  133  126  133  125   128
  31  |   15   18    5   17   15    4   14    6   13   13    4 |    19   26   20   21   26   17   26   14   27   13    16
  32E |   16   18    7   12   19    4   15    5   18   12    4 |    32   44   37   31   39   34   44   33   41   37    35
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |   13   15    6   14   16    4   13    5   11   16      |T   27   31   29   29   35   28   31   28   30   25    29
 WRMS |   13   15    6   14   15    4   13    5    9   16      |NE  21   25   24   24   30   23   25   23   24   19    24
 MEDI |   11   15    6   13   15    4   13    5   10   13      |MD  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  emr  esa  gfz  grg  igr  jpl  mit  ngs  sio  IGS |   cod  emr  esa  gfz  grg  igr  jpl  mit  ngs  sio   IGS
------+--------------------------------------------------------+---------------------------------------------------------
   1  |   12   17    6   10   14    4   12    6   10   10    3 |    28   36   37   32   44   35   49   37   38   37    37
   2  |    7   18    6   14   12    4   15    7    8   22    4 |    21   33   22   23   26   20   30   24   28   17    23
   3  |   10    9    4   15   11    3    8    6    8   18    3 |    16   23   18   25   22   17   22   19   24   15    19
   4  |    5   11    5   12   12    3    9    6   10   23    3 |    27   24   25   30   28   26   25   30   25   25    26
   5E |    7   14    6    9   14    4   15    7    9   12    3 |    50   55   50   51   59   50   52   57   53   48    53
   6  |   20   10    5   14   12    2    8    6    6   15    3 |    22   25   20   28   24   20   25   22   25   20    21
   7  |   14   17    4   12   20    4   15    6   12   13    4 |    19   24   16   17   25   14   22   17   24   10    15
   8  |    9   12    4    9   10    5   12    5   10   10    3 |    14   18   14   16   13   13   17   16   17   16    13
   9  |    7   10    7   11   15    3   12    6   13   18    3 |    14   23   18   16   23   15   23   15   28   15    16
  10E |   13   24    7   12   15    4   19    9   20   25    5 |    24   35   24   25   30   20   28   21   39   33    24
  11  |   10   18    6    7   16    4   13    6   15   12    3 |    23   38   29   28   36   24   35   28   33   25    29
  12  |   11   24    5    8   14    4   23    6   13   16    4 |    16   28   22   21   28   19   27   20   32   14    19
  13  |   11   17    5   14   19    4   14    7   11   12    4 |    19   27   16   20   32   16   26   20   19   16    17
  14  |   10   17    5   10   14    4   12    9   10   14    3 |    17   27   17   20   25   16   23   18   20   16    16
  15  |    9   16    7    7   16    3   16    6   10   18    3 |    21   26   24   23   31   20   27   20   22   22    21
  16  |    9   16    7   11   14    4   12    7    9   17    3 |    11   25   15   22   24   14   22   15   20   11    15
  17  |   10   16    6   14   11    5   15    6   10   23    4 |    24   27   26   31   26   24   26   26   27   26    24
  18E |    8   12    7    8   12    4   12    5    8   22    3 |    39   37   39   36   42   35   40   36   38   37    37
  19  |   20   11    5   12    9    5   12    6    9   21    4 |    26   26   25   27   23   23   27   25   27   20    23
  20E |   10   12    5   13   17    5   12    6   10   24    4 |    36   39   36   36   45   34   35   37   35   38    36
  21  |    8   17    7    9   13    4   13    8   13   21    4 |    13   30   16   17   28   15   27   21   23   17    18
  22E |    7   16    9   11   18    3   10    8   11   10    3 |    28   33   26   30   27   25   30   30   23   27    27
  23  |   15   17    5   15   17    4   16    8   11   17    4 |    19   27   16   20   26   15   26   19   20   14    17
 X24  |   19  ---   10  ---   34   13  ---    8  ---  ---    9 |   ---  ---   93  ---   99   88  ---   91  ---  ---    92
  25  |   11   27    8    9   13    6   16    8    8    9    4 |    22   27   25   23   33   22   30   21   31   22    22
  26  |    9   10    6    9   13    4   10    6    8    6    3 |    14   26   18   20   22   17   26   16   22   19    18
 X27  |    8  ---  ---  ---  ---  115  ---  ---  ---  ---    0 |    58  ---  ---  ---  ---   70  ---  ---  ---  ---    59
  28  |    7   13    4   12   15    4   12    6    8    7    3 |    11   20   17   15   29   12   20   16   21   14    15
  29  |    9   18    6   11   12    5   16    8   11   24    4 |    18   27   23   22   22   22   24   24   27   19    21
  30E |   16   22    9   18   17    4   19    9   10   18    5 |    98  106  100  109  104  100  105   96   96  104    99
  31  |   11   15    6   14   17    3   13    8   10   14    4 |    16   26   19   22   30   17   25   18   25   16    17
  32E |   14   18    6   15   16    4   17    8   17    9    4 |    29   43   34   32   38   31   43   31   38   31    33
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |   11   16    6   12   15    4   14    7   11   17      |T   25   32   28   27   34   27   31   28   30   24    28
 WRMS |   11   16    6   12   14    4   13    7    9   15      |NE  20   26   23   22   29   23   26   24   25   18    24
 MEDI |   10   16    6   11   14    4   13    6   10   16      |MD  21   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  emr  esa  gfz  grg  igr  jpl  mit  ngs  sio  IGS |   cod  emr  esa  gfz  grg  igr  jpl  mit  ngs  sio   IGS
------+--------------------------------------------------------+---------------------------------------------------------
   1  |   16   14    4   15   14    3   11    4   12   12    3 |    27   36   35   31   45   34   49   35   41   37    35
   2  |    7   18    8   20   12    4   17    6   10   22    4 |    19   32   21   26   26   19   31   23   25   18    21
   3  |   12   10    4   15   14    2   10    4    9   20    3 |    20   20   20   17   22   16   22   17   22   16    16
   4  |    6   11    5   11   13    4    9    4    7   25    3 |    21   19   17   22   22   19   19   21   19   21    18
   5E |    7   13    5   12   12    3   16    5   11   20    3 |    38   40   38   39   40   37   40   37   42   42    37
   6  |   11   10    5   16   12    3    9    4    9   15    3 |    24   22   24   21   22   21   24   20   27   21    20
   7  |   13   18    9   14   23    5   13    7   12   16    4 |    19   26   18   21   30   16   23   20   22   16    16
   8  |   11   10    5   14   16    4   10    5    8   11    3 |    15   19   11   18   20   11   21   16   15   19    14
   9  |   10   11    7   10   12    5   11    5   12   15    3 |    15   20   14   12   20   12   24   14   22   14    14
  10E |   12   24    6   15   13    4   21    8   19   21    5 |    32   43   31   33   31   30   40   33   40   41    32
  11  |    8   16    5   12   14    4   11    4   12   14    3 |    20   36   23   23   34   22   35   24   31   24    24
  12  |   11   21    8   14   16    6   24    6   11   15    4 |    15   25   18   21   28   13   26   16   25   13    16
  13  |   10   16    6   15   23    4   13    6    7   13    4 |    21   30   23   24   36   20   29   23   22   18    21
  14  |    9   15   10   11   16    2   12    8   12   12    4 |    17   22   22   17   24   14   23   14   22   14    16
  15  |   10   15    5   10   17    5   16    7   10   17    3 |    18   23   17   16   30   14   25   15   22   16    15
  16  |   13   19    6   11   16    4   14    7   10   16    4 |    18   25   17   15   26   15   24   15   20   13    15
  17  |    9   15    6   14   11    3   16    6    8   26    4 |    16   23   17   24   21   15   24   18   21   16    17
  18E |   16   12    7   12   16    3   11    5   11    6    3 |    27   31   31   29   31   28   31   26   31   28    27
  19  |   25   13    6   12   12    4   12    5   13   22    4 |    20   24   23   20   23   18   26   19   23   16    18
  20E |    9   11    5   10   12    6   12    4   11   10    3 |    22   28   22   18   28   21   26   24   26   24    23
  21  |   11   16    7   12   15    3   12    5   12   23    4 |    16   29   17   17   27   15   26   16   20   17    16
  22E |    8   20    7   14   14    2   12    4   13    9    3 |    25   37   28   30   32   25   28   25   25   24    26
  23  |   13   18    7   16   20    5   16    6   11   16    4 |    22   26   20   21   29   18   27   20   20   16    19
 X24  |   29  ---   10  ---   20   11  ---    9  ---  ---    9 |   ---  ---   74  ---   81   69  ---   71  ---  ---    72
  25  |   15   22    7   13   16    6   16    6    6    9    4 |    17   19   16   21   28   16   25   16   22   17    15
  26  |    9   11    4   11   12    4    8    4   11    9    2 |    22   29   22   25   26   21   27   26   28   25    24
 X27  |    8  ---  ---  ---  ---  103  ---  ---  ---  ---    0 |    44  ---  ---  ---  ---   55  ---  ---  ---  ---    42
  28  |    8   13    6   14   16    4   12    6    7   13    3 |    14   20   14   17   26   11   23   17   18   19    15
  29  |   13   16    8   12   13    5   15    8   12   23    4 |    21   24   23   24   21   18   26   23   25   18    19
  30E |   19   18    8   14   18    5   17    9   12   21    5 |    96  103   97  104  103   97  100   98   96   93    98
  31  |   12   16    7   15   21    4   12    7   12   15    4 |    19   24   20   15   27   15   26   14   23   16    15
  32E |   19   19    6   15   16    4   17    7   16   10    4 |    34   42   34   30   37   33   45   32   40   33    34
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |   12   16    6   14   16    4   14    6   11   17      |T   24   29   26   25   32   24   30   25   27   23    25
 WRMS |   12   16    6   13   15    4   13    5   10   17      |NE  20   24   21   20   28   20   26   21   23   18    21
 MEDI |   11   15    6   14   15    4   12    6   11   15      |MD  20   25   22   21   28   18   26   20   23   18    19

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

        Weighted Average                                            Orbit Dynamics (7 days)
 PRN  |  cod  emr  esa  gfz  grg  igr  jpl  mit  ngs  sio  IGS |   cod  emr  esa  gfz  grg  igr  jpl  mit  ngs  sio   IGS
------+--------------------------------------------------------+---------------------------------------------------------
   1  |   10   16    5    8   16    5   13    3    8   13    3 |    36   41   40   37   53   40   56   41   46   46    41
   2  |    7   19    8   18   10    4   19    5    8   25    4 |    23   33   23   26   26   22   35   24   29   24    24
   3  |   11   11    5   11   19    3    7    6   10   21    3 |    15   26   20   20   28   15   23   17   22   18    18
   4  |    6   10    5    9   12    3    9    3   11   23    3 |    32   30   30   32   32   30   29   31   26   28    29
   5E |    8   15    6    9   11    4   20    7   12   11    3 |    45   51   49   44   51   45   50   47   54   44    47
   6  |   10    9    6   12   16    4    9    4   10   14    3 |    20   30   26   31   33   23   28   24   23   27    24
   7  |    8   17    5   10   20    3   16    6   10   16    3 |    21   27   16   20   28   16   26   16   21   18    18
   8  |   10    9    5    9   13    4   11    4    8   10    2 |    14   16   13   16   15   11   17   13   18   15    12
   9  |    8   13    7    8   16    4   10    3   10   18    3 |    13   21   15   12   22   12   21   14   23   16    15
  10E |    9   20    9   11   12    5   17    6   15   28    4 |    26   40   29   26   35   28   37   30   38   32    29
  11  |    8   16    6   10   18    3   12    3    8   16    3 |    27   38   28   27   44   28   38   29   28   31    29
  12  |   12   23   11    8   13    4   22    5   12   17    4 |    21   31   19   18   30   15   30   18   25   14    20
  13  |    9   16    7   10   21    3   14    6   11   16    4 |    23   34   24   27   41   22   33   22   21   26    24
  14  |   11   17    7    8   18    3   14    8   10   15    4 |    19   23   21   22   27   16   24   17   22   18    18
  15  |    9   13    6    7   20    4   16    4    7   18    3 |    21   27   22   20   36   19   29   19   24   25    21
  16  |   11   12    8   12   15    3   13    5   10   18    3 |    16   24   17   13   25   14   25   16   25   13    17
  17  |   12   17    6   10   11    5   17    5   12   26    4 |    31   32   29   32   32   28   28   28   26   29    27
  18E |    8   13    7    9   15    2   12    4    7   15    3 |    36   36   36   32   40   33   40   34   37   34    35
  19  |   22   13    6   11   12    4   11    4   14   25    4 |    27   29   27   29   29   24   28   26   24   25    25
  20E |   12   11    7    8   14    5   11    6   10   11    3 |    29   36   29   28   33   27   34   28   29   32    29
  21  |    7   15    5    7   13    4   16    6    9   26    3 |    18   32   18   12   28   15   31   16   24   20    18
  22E |    8   14    6   10   16    2   10    5   11   11    3 |    37   35   32   32   34   32   36   34   33   34    34
  23  |   13   17   10   10   18    4   16    5   12   19    4 |    24   32   24   22   31   20   33   20   22   23    22
 X24  |   17  ---    7  ---   46    9  ---    9  ---  ---   10 |   ---  ---  105  ---  116  106  ---  107  ---  ---   107
  25  |    9   24    7    7   12    3   17    6   12   11    3 |    22   24   23   23   33   20   33   21   28   22    22
  26  |    7   11    4    9   13    4    8    6    7   10    2 |    19   20   18   18   25   17   20   19   19   18    18
 X27  |    7  ---  ---  ---  ---   47  ---  ---  ---  ---    0 |    50  ---  ---  ---  ---   25  ---  ---  ---  ---    51
  28  |    6   11    5   10   13    3   11    5    8    9    2 |    15   21   14   19   27   14   20   17   21   18    17
  29  |   13   17   12    8   14    6   14    6   13   23    4 |    29   29   30   30   29   26   27   28   25   23    26
  30E |   18   20    9   13   17    4   18    9   11   33    5 |   110  111  106  106  110  105  112  102  110  115   107
  31  |   17   17    5   11   22    4   14    7   12   22    4 |    20   26   17   18   29   14   25   14   23   21    15
  32E |   17   21    9    9   19    4   18    7   16   11    4 |    37   50   37   32   47   35   48   34   41   35    37
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |   11   16    7   10   16    4   14    5   11   19      |T   28   33   30   27   37   28   33   29   30   28    30
 WRMS |   11   16    7    9   15    4   14    5   10   18      |NE  23   28   25   22   34   23   28   24   24   22    26
 MEDI |    9   15    6    9   15    4   14    5   10   16      |MD  23   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     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     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    14 |
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    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 2960 |     5     3    15 |  ----  ----  ---- |     7     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 |     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    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 |     9     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    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     5    19 |     5    10    19 |    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    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 2972 |     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    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 |     7     5    18 |     6    10    25 |     8     7    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   uuuuu |     -24     -37       5      22     -5 |      -3     14
            |      15      18      64      63      4 |       2
emr   uuuuu |      27     -15      89     158      7 |      15     22
            |      28      21      83     119     11 |       3
esa   uuuuu |     -42     -23     -18    -134     -4 |       0     13
            |      35      31      79      61      4 |       2
gfz   uuuuu |      67      41      -6     -65     -5 |       8     14
            |      22      15      44      26      4 |       1
grg   uuuux |      -8     -22      28     -48    -19 |      -2     36
            |      30      15      67      24     37 |      10
igr   xxxxx |     -50      38     -12       8     -1 |       1     12
            |      20      18      47      98      4 |       2
irf   xxxxx |       9       8      19       7      0 |      -2      9
            |      15       9      12      12      3 |       1
jpl   uuuuu |      12     -38      -9     161     -1 |      38     41
            |      25      33      52      57      6 |       1
mit   uuuuu |      25      11      -2      53      2 |      -6     13
            |      13      19      53      49      7 |       2
ngs   uuuxu |     -32     108     -22      85      2 |       5     10
            |      42      49      99     278      5 |       2
sio   xuuuu |     188     -58     -23     -42     17 |      16     23
            |     104      41      63      89      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   uuuuu |      -4     -65      30      17     -5 |       0     19
emr   uuuuu |      63     -55     188     254     -3 |      15     24
esa   uuuuu |    -102      29      58    -174     -7 |       2     19
gfz   uuuuu |      87      32     -77     -50     -4 |      10     19
grg   uuuux |      48     -38     130     -61     22 |     -19     55
igr   xxxxx |     -61      46      -1    -146      1 |       2     16
irf   xxxxx |      32      -7      -3      22      1 |       0     13
jpl   uuuuu |      10     -67     -91     149     -4 |      40     43
mit   uuuuu |      31       1     -66      70      7 |      -4     17
ngs   uuuxu |      -7     151     -81    -320     -3 |       6     16
sio   xuuuu |     125     -82      33     -92     18 |      13     21

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   uuuuu |     -22     -53      72      58     -5 |      -4     16
emr   uuuuu |      58      -2      16     288     -5 |      12     21
esa   uuuuu |     -19     -46      69    -166      1 |      -2     16
gfz   uuuuu |      70      29     -11     -92     -5 |       7     16
grg   uuuux |      -5       4      36     -56      6 |     -14     53
igr   xxxxx |     -32      18      34     -61     -3 |      -1     14
irf   xxxxx |      12      16      26      -5      2 |      -4      8
jpl   uuuuu |      -3     -48      -4     156      2 |      37     40
mit   uuuuu |      27      35     -51      20      4 |      -7     14
ngs   uuuxu |    -120      72     -87     -25     -3 |       3      9
sio   xuuuu |      48     -35      10      50     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   uuuuu |     -21     -35     -42      79     -9 |      -2     13
emr   uuuuu |      46     -22      81     255      2 |      14     22
esa   uuuuu |     -59     -23       6    -179    -10 |       1     14
gfz   uuuuu |      94      50       6    -103      2 |       9     16
grg   uuuux |      -2     -26      -9     -28     16 |      -4     42
igr   xxxxx |     -32      52     -37     -28      0 |       1     13
irf   xxxxx |      13       5      29       1     -1 |      -3      8
jpl   uuuuu |      12     -31      -1     239    -10 |      40     42
mit   uuuuu |      16       0      53      40      6 |      -8     14
ngs   uuuxu |     -26     110     -86    -147      1 |       3      9
sio   xuuuu |     156     -43    -149     -99     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   uuuuu |     -48     -27     -50     -30    -11 |      -2     14
emr   uuuuu |      -4     -19      35     167     -3 |      15     22
esa   uuuuu |       3      -7     -39    -202     -2 |       0     15
gfz   uuuuu |      58      25       6     -55     -7 |      10     15
grg   uuuux |       4     -26      72     -55     -7 |       8     23
igr   xxxxx |     -73      43     -40     -17     -9 |       2     12
irf   xxxxx |      -5       3      25      25      0 |      -3      9
jpl   uuuuu |     -28       7      11     211     -2 |      39     42
mit   uuuuu |      -1      -6      46     112      7 |      -8     14
ngs   uuuxu |      13      70     -69      14      4 |       4      9
sio   xuuuu |     133     -18     -17    -119     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   uuuuu |     -31     -11     -79      34      2 |      -6     11
emr   uuuuu |       2       5     183     124     19 |      11     17
esa   uuuuu |     -17     -70      -3     -99     -2 |      -3     11
gfz   uuuuu |      71      62       1     -64     -8 |       6     10
grg   uuuux |     -41     -37      66     -51    -47 |       8     23
igr   xxxxx |     -70      62     -29     117      4 |      -1     10
irf   xxxxx |     -14      20      30      11     -8 |      -4      9
jpl   uuuuu |       7       6      60     172     -2 |      36     37
mit   uuuuu |      26      39     -37      33    -13 |      -5     11
ngs   uuuxu |     -26      66     -26     338      5 |       3      8
sio   xuuuu |     251     -13     -29      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   uuuuu |     -10     -31      19     -90     -4 |      -4     12
emr   uuuuu |      18     -16     136     -37     21 |      17     22
esa   uuuuu |     -62     -23    -164     -70     -2 |       0      9
gfz   uuuuu |      61      31     -32     -24     -8 |       8     11
grg   uuuux |     -22     -17     -47     -79    -74 |       5     24
igr   xxxxx |     -57      13     -74      82     -4 |       3      9
irf   xxxxx |      14      10      11      -3      3 |      -2      7
jpl   uuuuu |      39     -66     -66     142      6 |      39     40
mit   uuuuu |      35      -7      57     117      7 |      -4     10
ngs   uuuxu |     -24     195     186     309      0 |       7     10
sio   xuuuu |     244    -102      33    -133     16 |      21     27

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   uuuuu |     -31     -39      87      87     -2 |      -5     12
emr   uuuuu |       8       7     -19      59     15 |      20     24
esa   uuuuu |     -39     -22     -52     -46     -8 |      -1      9
gfz   uuuuu |      27      59      67     -64     -4 |       6     10
grg   uuuux |     -37     -14     -50      -6    -49 |      -1     33
igr   xxxxx |     -24      35      61     111     -1 |       2      9
irf   xxxxx |       9       9      16      -1      0 |      -1      6
jpl   uuuuu |      44     -65      27      59      6 |      39     40
mit   uuuuu |      37      12     -16     -18      0 |      -2      8
ngs   uuuxu |     -37      92      12     424     10 |       6      9
sio   xuuuu |     361    -116     -42      82     12 |      23     28



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