[IGSREPORT-21948] Wk 1745 IGS Final Orbits

IGS ACC igs.acc at noaa.gov
Fri Jul 5 08:56:41 PDT 2013


Author:  AC Coordinator / NOAA NGS

sum-file Version 2.0
Final IGS Orbit Combination - Week 1745   (Jun 16, 2013 - Jun 22, 2013)

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:

igs1745[0-6].sp3  IGS GPS ephemeris files in SP3 format.
igs1745[0-6].clk  IGS GPS satellite and station clocks in clock RINEX format.
igs1745[0-6].cls  IGS GPS clock combination summary report.
igs17457.erp      Earth Rotation Parameters (ERP) and their rates as well as
                  Universal Time (UT1-UTC) and Length Of Day (LOD) associated 
                  with IGS ephemerides.
igs17457.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.
    
    Starting week 1707:
      cod = cof${wwww}[0-6].[clk,snx,sp3] & cod = cof${wwww}7.[erp,sum]

 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   | 21 21 FLRS KOUC MIZU MOBS REYK FLRS KOUC MIZU MOBS
                0  |  COD   | REYK XMIS
                0  |  EMR   | 26 26
                0  |  ESA   | IRKJ KOUC CAGZ IRKJ KOUC
                0  |  GFZ   | 26 26
                0  |  GRG   | 26 26 BOGT IRKJ TNML BOGT IRKJ TNML
                0  |  JPL   | 6 8 26
                0  |  MIT   | 13 23 26 13 23 26 MDVJ MDVJ
                1  |  COD   | 14 14 HERT JOZ2 KOUC REYK HERT JOZ2 KOUC REYK
                1  |  EMR   | 26 26
                1  |  ESA   | IRKJ KOUC IRKJ KOUC UNSA
                1  |  GFZ   | 26 26
                1  |  GRG   | 26 26 ALIC FAA1 IRKJ ALIC FAA1 IRKJ
                1  |  JPL   | 26
                1  |  MIT   | 26 26 MDVJ
                2  |  COD   | 26 26 KOUC KOUC MOBS REYK
                2  |  ESA   | IRKJ KOUC IRKJ KOUC MATE
                2  |  GFZ   | KOUR MATE KOUR MATE
                2  |  GRG   | 26 26 BARH IRKJ KOUR REUN BARH IRKJ KOUR RESO REUN
                2  |  JPL   | 26 29
                2  |  MIT   | 26 10 26 GOPE KOSG MDVJ PRDS SYDN USNO
                3  |  COD   | JOZ2 KOUC REYK CONZ JOZ2 KOUC REYK RIOP
                3  |  ESA   | IRKJ KOUC IRKJ KOUC UNSA
                3  |  GFZ   | NYAL NYAL
                3  |  GRG   | 26 26 ABMF FAA1 IRKJ NICO NYAL USNO ABMF FAA1 IRKJ
                3  |  GRG   | NICO NYAL USNO
                3  |  JPL   | 26
                3  |  MIT   | 10 26 10 26 KOSG MDVJ KOSG MDVJ
                4  |  COD   | 26 26 KOSG KOUC MDVJ HERT KOUC
                4  |  EMR   | 26 26 HERS IRKT YAKT
                4  |  ESA   | KOUC KOUC MDVJ UNSA
                4  |  GFZ   | ONSA ONSA
                4  |  GRG   | 26 26 MDVJ ONSA POLV REUN USNO MDVJ ONSA POLV REUN
                4  |  GRG   | USNO
                4  |  MIT   | 6 26 6 26 SYDN USNO GOPE SYDN TWTF USNO
                5  |  COD   | 26 CONZ JOZ2 KOUC CONZ JOZ2 KOUC
                5  |  EMR   | 26 YELL YELL
                5  |  ESA   | 26 IRKJ KOUC IRKJ KOUC UNSA
                5  |  GFZ   | 26 ARTU ARTU
                5  |  GRG   | 17 26 17 IRKJ NYAL SPT0 IRKJ NYAL SPT0
                5  |  MIT   | 3 7 18 26 3 7 18 22 KOSG NYAL KOSG MDVJ NYAL
                6  |  ALL   | 32 32
                6  |  COD   | 26 26 DAV1 DAV1 FAA1
                6  |  ESA   | 26 26 IRKJ MAW1 IRKJ MAW1 UNSA
                6  |  GFZ   | KELY NRMD KELY NRMD
                6  |  GRG   | CAGZ FAA1 IRKJ IRKT CAGZ FAA1 IRKJ IRKT NYAL
                6  |  MIT   | 3 6 7 16 3 6 7 16 DAEJ MDVJ MOBS NYAL STR1 SYDN TLSE
                6  |  MIT   | TOW2 USNO

    
 5. New clock offsets and drifts were estimated for centres showing reference
    clock resets. Note that only the largest clock offset and drift are output
    to the summary file. However, the clock combination and the listed RMS
    include all the clock segments. In summary, the following clock
    shifts/resets were noticed and accounted for:
    
               Day | Centre |  Time  |  Jump
               ----+--------+--------+-------------
                6  |  MIT   | ~02:46 | ~ -0.06 ns

 6. 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.

 7. 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
               ----+--------+---------------
                2  |  NGS   |  26
                4  |  NGS   |  26

 8. 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 G26 |    |    |    |    |    |    |  4 |

 9. 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.

10. 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 |    -.1     .0   -1.1     -25     30     -6     .15
       EMR  |   0 |    8.6   -5.1    4.3     -52    -16    -26     .24
       ESA  |   0 |    4.5   -1.1     .5      56     -3    -23     .05
       GFZ  |   0 |     .2     .0    -.6     -13    -23    -16    -.32
       GRG  |   0 |   10.2   -9.1   26.3     -27     52    -23     .28
       JPL  |   0 |    2.1   -7.4   14.9     -57    -24    -56     .46
       MIT  |   0 |    5.6   -4.2    8.9     -12      0    -45     .22
       NGS  |   0 |    -.4   -2.4   17.6     -64    -20     -5     .46
       SIO  |   0 |    9.4   -4.6   -3.2    -104   -120   -174     .18

       COD  |   1 |     .1     .5   -1.2     -27     21    -14     .06
       EMR  |   1 |    7.9   -4.9    9.0     -57    -23    -27     .56
       ESA  |   1 |    2.0   -2.2     .9      44      3    -32     .15
       GFZ  |   1 |     .3    -.9    -.7     -20    -21     -6    -.02
       GRG  |   1 |    8.3   -5.3   31.7     -27     33    -40     .29
       JPL  |   1 |    4.1   -5.6   15.6     -10     71    -45     .57
       MIT  |   1 |    5.2   -4.6    9.5     -10     11    -52     .27
       NGS  |   1 |    5.2   -1.5   18.9     -67    -41     26     .06
       SIO  |   1 |    2.9   -5.6     .1     -94    -52    -74     .26

       COD  |   2 |     .1     .1   -1.4     -16     25    -27     .29
       EMR  |   2 |    5.2  -10.1    7.4     -52    -30    -32     .53
       ESA  |   2 |   -1.2   -3.4    2.3      50      4    -29     .33
       GFZ  |   2 |     .0    -.6   -1.2     -13    -35    -11     .15
       GRG  |   2 |    8.3   -3.0   30.1     -20     30    -43     .44
       JPL  |   2 |    -.5     .1    9.5     -41    106    -33     .56
       MIT  |   2 |    3.8   -4.8   14.9      -7      7    -44     .38
       NGS  |   2 |    2.7   -1.7   22.6     -96    -44     10     .56
       SIO  |   2 |    2.6   -4.5    9.2     -45    -21   -102     .36

       COD  |   3 |     .1    -.2    -.9     -32     24    -24     .38
       EMR  |   3 |     .6   -1.0    6.8     -38    -28    -36     .35
       ESA  |   3 |    4.0   -4.9   -3.0      49     12    -36     .31
       GFZ  |   3 |     .1    -.9    -.8     -21    -27    -20     .18
       GRG  |   3 |    8.2   -5.8   22.3     -16     10    -10     .30
       JPL  |   3 |    -.9    4.3   15.1     -46     58    -20     .57
       MIT  |   3 |    6.2   -2.3   10.3     -33    -24    -47     .44
       NGS  |   3 |     .1   -9.2   25.4    -193    -32    -32     .27
       SIO  |   3 |    4.5   -2.8   10.5     -19    -24    -31     .37

       COD  |   4 |    -.4    -.4   -1.1     -30     41    -37     .25
       EMR  |   4 |    4.6    2.0    6.8     -40    -25    -41     .38
       ESA  |   4 |     .9   -3.7   -1.3      45     18    -42     .28
       GFZ  |   4 |    -.3    -.7   -1.5      -7    -32    -17     .37
       GRG  |   4 |    7.8   -2.4   27.1      -4     23    -39     .50
       JPL  |   4 |   -1.3    1.9   19.0     -67     62     -4     .50
       MIT  |   4 |    5.4     .6   15.7     -29    -13    -55     .33
       NGS  |   4 |     .1   -3.8   22.2    -126    -35     -8     .45
       SIO  |   4 |    5.1   -1.9   24.5      40     -5     87     .19

       COD  |   5 |     .2     .6   -1.1     -24     23    -47     .27
       EMR  |   5 |     .2   -2.0    8.1     -46    -22    -29     .32
       ESA  |   5 |    -.5   -3.8    4.6      42     16    -52     .20
       GFZ  |   5 |     .1    -.3   -1.3      -6    -29     -2     .01
       GRG  |   5 |    4.3   -9.8   15.8     -31     31    -29     .66
       JPL  |   5 |    2.1   -5.1    5.1     -75      1    -10     .62
       MIT  |   5 |    4.5   -2.8   16.6     -28    -11    -51     .23
       NGS  |   5 |    2.5   -1.7   25.0    -115    -70     14     .46
       SIO  |   5 |    5.7    -.3    6.8      47    -73    180     .09

       COD  |   6 |     .7    -.4    -.9     -34     23    -54     .15
       EMR  |   6 |   -3.4   -2.7   16.7     -32    -27    -13     .24
       ESA  |   6 |    4.1   -7.1   -1.7      25    -13    -51     .36
       GFZ  |   6 |    -.1    -.7   -1.0       4    -13    -10    -.18
       GRG  |   6 |   -1.2   -9.8   18.6     -23     21    -17     .46
       JPL  |   6 |    3.9   -7.7   19.3      51     72     -8     .39
       MIT  |   6 |    4.0   -5.4   17.1     -33    -25    -47     .36
       NGS  |   6 |     .1   -5.5   18.3    -119    -34      0     .29
       SIO  |   6 |    7.3   -2.9   13.7      27    -72    250     .17


11. 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.

12. 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 1.1745.a). It also displays the computed satellite
position sigmas for the combined orbits (Table 1.1745.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 2.1745.[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 3.1745.[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 5.1745.0-6). 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 1745 summary.                       (Jun 16, 2013 - Jun 22, 2013)

Table 1.1745.a   GPS week: 1745   MJD: 56459.000-56465.000

         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  272|    0     0    -7    17    36     5  -.40   10   10 |   -1051    -282     17     86
        |    1     0     1     8    17     9   .03           |     132     327
emr   79|    0    -3    -1   -11   -22     5   .38   14   14 |    3558    -490     15    100
        |    1     1     0    23    21    14   .03           |    1240     507
esa  150|    1     0     0    16    33   -11   .10    5    5 |      56   -1876     15    123
        |    0     0     0    24    15    12   .02           |     482     539
gfz  201|   -1     0     0   -28   -55     7  -.47    9    8 |      75    -197     12     76
        |    0     0     0    63    49    14   .03           |     164     540
grg  141|    2     0    13     0    10    24   .77   14   13 |      18    -213     21    149
        |    0     0     2    20    13    19   .08           |      95     308
igr  n/a|    0     0    -3     9    20     5  -.22    6    5 |    1873    -779     14     70
        |    0     0     0    16    18    12   .01           |    1718     633
jpl   80|   -1     1    -5     8   -38   -32   .36   14   13 |    3106    -455     16    103
        |    1     1     2    60    30    22   .02           |    1188     623
mit  236|    0     0    -1    -1    12     3  -.58   12   10 |      59    -191     25    200
        |    0     0     0    43    30    15   .02           |     134     399
ngs  242|    0     0     2   -37   -49     0   .35   14   10 |   -1065    -293   1578   3181
        |    0     1     2    58    32    20   .03           |     129     341
sio  429|    1     2    -6   -14   -64    24  -.56   20   19 |     ---     ---    ---    ---
        |    1     1     0    64    50   161   .08           |     ---     ---


Table 1.1745.b   GPS week : 1745   MJD: 56459.000-56465.000   

         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  |    3    3    3    4    4    4    3 |
   2  |    5    4    4    4    4    4    4 |
   3  |    3    4    4    4    4    5    5 |
   4  |    4    3    3    3    3    3    3 |
   5  |    4    5    4    4    4    5    5 |
   6  |    3    3    3    3    4    4    4 |
   7  |    4    3    4    4    3    4    4 |
   8  |    3    3    3    3    3    3    3 |
   9  |    4    3    3    3    3    3    3 |
  10  |    3    3    3    3    3    3    3 |
  11  |    3    3    3    3    4    4    4 |
  12  |    5    5    5    5    5    6    6 |
  13  |    4    4    4    4    3    3    4 |
  14  |    5    4    4    3    4    4    4 |
  15  |    5    5    5    5    6    6    6 |
  16  |    5    4    4    5    4    5    5 |
  17  |    4    4    4    4    4    4    5 |
  18  |    4    4    4    4    4    4    4 |
  19  |    4    4    4    4    4    5    5 |
  20  |    4    4    3    4    4    4    4 |
  21  |    3    3    4    4    3    4    4 |
  22  |    4    4    4    3    4    4    4 |
  23  |    4    3    4    4    4    4    3 |
  24  |    5    4    4    4    4    4    3 |
  25  |    4    4    4    4    4    5    4 |
  26  |    6    7    8   11    8    9    7 |
  27  |    0    0    0    0    0    0    0 |
  28  |    3    3    4    4    3    4    4 |
  29  |    5    4    4    5    6    6    6 |
  30  |    0    0    0    0    0    0    0 |
  31  |    4    4    4    4    3    4    4 |
  32  |    3    3    3    3    4    3    4 |



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
         result of the combination after the AC orbits were pre-aligned using
         the SINEX rotations from above. Prior to Wk 1702, AC ERP rotations
         used in the pre-alignment were also displayed.
         WRMS - RMS weighted by the centres SP3 header accuracy codes.
         STA  - Number of stations in the daily solutions.
   
Table 2.1745.0   GPS week: 1745   Day: 0   MJD: 56459.000                            

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  276|   -1     0    -5    12    51    15  -.42    9    9 |   -1334     155     17     88
emr   79|    3    -2    -1   -13   -30     0   .35   14   14 |    4889    -699     11    103
esa  150|    0     0     1    10    18    -7   .12    5    5 |    -309   -1697     12    126
gfz  204|    0     0     0   -23   -25     5  -.46    9    8 |     178    -827     11     77
grg  142|    2     0    12   -21    26    -4   .69   14   12 |      -3    -216     28    176
igr  n/a|    0     0    -4    26    33   -11  -.20    5    5 |    3627   -1028     14     71
jpl   80|    1     2    -3     9   -61   -51   .39   13   12 |    4191    -858     14    104
mit  236|   -1    -1    -1     3    -4    28  -.59   12   10 |     153    -457     23    194
ngs  244|   -1     1     0    -4   -21     0   .32   12   10 |   -1311      83   1578   2949
sio  438|    0     0    -7  -107  -154  -193  -.45   20   18 |     ---     ---    ---    ---

Table 2.1745.1   GPS week: 1745   Day: 1   MJD: 56460.000                            

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  273|   -1     1    -7     7    11   -11  -.35    9    9 |    -944    -203     18     81
emr   80|    2    -2     0   -17   -63     7   .34   14   14 |    4278     239     12     92
esa  150|    0     0     1    18     6     6   .11    5    5 |    -299   -1761     14    119
gfz  205|    0     0     0    36    32     1  -.42    8    7 |    -128    -467     12     71
grg  144|    1     0    15    16    -7    -2   .71   14   12 |      48    -494     20    139
igr  n/a|    0     0    -2    19    10    -1  -.20    5    5 |    2752     414     14     81
jpl   80|    0     2    -5    13   -53   -33   .35   13   12 |    3439     552     16    100
mit  236|    0     0    -1   -16    64    14  -.56   10    9 |      86    -483     22    219
ngs  246|    0    -2    -1  -145   -80   -31   .37   14   10 |   -1090     -58   1584   3122
sio  428|    0     2    -6   -81   -44   -53  -.47   19   17 |     ---     ---    ---    ---

Table 2.1745.2   GPS week: 1745   Day: 2   MJD: 56461.000                            

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  273|   -1     1    -6    16    36     7  -.37   10   10 |   -1056    -350     15    119
emr   80|    0    -5    -1   -36   -28    -1   .39   16   16 |    4854   -1331     13     95
esa  150|    0     0     0   -13    48   -23   .10    5    4 |     926   -2914     16    109
gfz  200|   -1     0     0     4   -65    40  -.47   10    9 |     286    -638     13     72
grg  143|    2     0    10    28     8    28   .71   14   12 |     188    -629     17    132
igr  n/a|    0     1    -4    -6     4     0  -.23    7    5 |    3662   -1614     15     73
jpl   80|   -1     0    -4   -34    -9     4   .39   14   13 |    4445   -1204     17    100
mit  237|    0     0    -1    75   -31     8  -.59   11   10 |     234    -493     32    198
ngs  244|    0     0     4   -35   -83   -10   .35   17   11 |   -1087    -357   1715   3050
sio  430|    0     1    -6    16   -87  -104  -.53   18   20 |     ---     ---    ---    ---

Table 2.1745.3   GPS week: 1745   Day: 3   MJD: 56462.000                            

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  274|   -1     1    -9    28    29     9  -.41   11   10 |    -945    -905     14     77
emr   80|    0    -3     0    37   -19     8   .41   14   14 |    3546    -644     14    101
esa  150|    1     0     0    62    33   -12   .08    5    5 |    -158   -1727     16    142
gfz  202|    0    -1     2  -154   -50     1  -.47   10    9 |     109    -395     13     82
grg  143|    2     0    10   -28    -1    40   .75   13   12 |     -56    -347     17    138
igr  n/a|    0     1    -2    29    22     0  -.22    6    5 |    2130    -966     16     77
jpl   80|   -3     0    -5     4   -28   -34   .36   14   12 |    3336    -514     16    107
mit  236|    0     1     0   -61    32    -4  -.60   12   10 |     141    -526     22    193
ngs  244|    0    -1     2    13   -62    -2   .33   15   10 |    -928    -984   1801   3526
sio  431|    3     3    -5   -48   -15   -25  -.64   20   19 |     ---     ---    ---    ---

Table 2.1745.4   GPS week: 1745   Day: 4   MJD: 56463.000                            

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  274|    0     0    -9    21    21     6  -.40   11   10 |   -1034    -240     18     90
emr   80|    0    -2    -1    -9   -12    25   .39   15   15 |    3467    -652     19    116
esa  150|    0     0     0    20    36   -19   .10    5    5 |     469   -2152     16    108
gfz  202|   -1     0     0   -62   -63     1  -.47    9    8 |     177      43     13     84
grg  142|    1     1    17    -6    18    32   .82   15   13 |    -118     281     20    159
igr  n/a|   -1     1    -3    -3    -7    17  -.20    6    5 |    1764   -1105     14     65
jpl   80|   -1     1    -8   -45   -24   -28   .35   15   13 |    3370   -1011     15     95
mit  237|    1     0     0    26    11    -7  -.59   12   10 |    -108     298     21    174
ngs  243|   -1     0     4    15   -43     5   .34   16    8 |   -1069    -242   1575   3485
sio  425|    1     3    -6    59    -5   108  -.56   19   19 |     ---     ---    ---    ---

Table 2.1745.5   GPS week: 1745   Day: 5   MJD: 56464.000                            

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  270|    0     0    -6    26    39     0  -.41   11   10 |   -1009    -366     19     67
emr   80|    0    -2     0   -15    -6    15   .38   15   15 |    1915     -91     18    106
esa  150|    1     0     0    20    40   -25   .08    6    6 |    -345   -1169     16    137
gfz  197|   -1     0     0    -9   -90     0  -.49    9    8 |    -160     727     13     74
grg  140|    2     0    15    11    24    34   .85   15   14 |      50     -21     25    145
igr  n/a|   -1     0    -3   -12    26    24  -.21    6    5 |    -122    -614     14     66
jpl   80|   -2     3    -7   -23   -89   -65   .34   16   16 |    1508     -88     19    105
mit  237|    1     0     0   -23    23     4  -.60   13   11 |      29     -73     24    196
ngs  236|   -2     0     2   -23     5    36   .35   13    9 |   -1046    -334   1487   2955
sio  421|    2     4    -7    36   -73   190  -.63   21   19 |     ---     ---    ---    ---

Table 2.1745.6   GPS week: 1745   Day: 6   MJD: 56465.000                            

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  269|    0     1    -6    10    62    12  -.44   11   11 |   -1035     -70     18     81
emr   80|   -1    -4     0   -23     4   -19   .40   14   14 |    1960    -256     18     91
esa  150|    1     0     0    -6    50     4   .08    5    5 |     111   -1713     15    125
gfz  199|   -2     0     0     8  -122     3  -.51   10   10 |      64     176     12     75
grg  138|    2     0    14     1     6    43   .89   15   13 |      20     -66     26    154
igr  n/a|    0     0    -2    15    49    11  -.24    5    5 |    -700    -541     16     60
jpl   80|   -1     0    -3   135    -6   -18   .34   15   14 |    1458     -66     17    113
mit  237|    0     0    -2   -16    -5   -17  -.56   12   11 |    -120     397     31    232
ngs  239|    0     0     4   -86   -59     0   .40   14   11 |    -924    -159   1312   3185
sio  431|    0     4    -7    26   -72   248  -.61   20   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 3.1745.0   GPS week: 1745   Day: 0   MJD: 56459.000                            

        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  |    9   10    5    5    7    6   16    9   10   25    3 |    38   46   45   43   52   39   50   43   42   35    42
   2  |    7   12    8   19   10    6    9   15   10   20    4 |    21   25   27   37   27   24   26   30   26   22    23
   3  |    9   12    4    7   11    5   12    8    9   21    3 |    29   36   28   29   33   28   35   26   35   30    29
   4  |    8   11    5   10    9    5    8   12   11   14    3 |    24   30   32   35   37   29   31   36   35   29    30
   5  |   13   15    6    7   11    6   14   13    7   21    4 |    45   49   41   38   42   41   49   41   40   44    41
   6  |    8    9    4    7    7    3   11    7    9   19    2 |    16   25   15   14   21   15   24   14   23   16    15
   7  |   10   12    5    7   15    5   13    9    8   26    3 |    33   28   25   26   31   25   30   24   30   32    25
   8  |    8    7    4    6   12    3   10    7    9   24    3 |    23   25   22   25   22   23   29   23   28   28    23
   9  |   10    8    5    6   10    4   10   14   11   34    3 |    25   27   26   25   26   26   29   29   26   36    25
  10  |    7    7    3    6   11    5    6   10   10   15    2 |    11   18   14   14   22   12   19   17   19   20    14
  11  |    6   12    4    4   11    3   10    9    9   13    3 |    59   67   63   62   73   63   65   62   65   59    63
  12  |   10   25    6   15   17    6   17   11   12   18    5 |    20   37   21   21   32   18   30   19   27   20    20
  13E |    7   13    5    6   16    6   11   13   11   19    3 |    38   39   36   36   45   35   41   40   41   37    37
  14E |   10   12    5    7   19    4   12   23   14   27    4 |    22   24   23   20   23   20   22   30   29   26    21
  15E |    8   20    6   10   19    5   18   15   12   11    4 |    16   23   16   17   21   15   22   18   21   21    15
  16  |   10   20    5   12   15    6   13   12   13   18    4 |    25   33   21   16   28   22   29   17   24   19    20
  17  |    8   13    5    8   17    3   15    8   10   13    3 |    18   25   20   25   35   20   25   20   30   17    21
  18  |    8   15    7    9   15    5   13    8   12   23    4 |    14   22   15   18   23   13   19   17   14   17    11
  19  |    6   12    5    9   17    4   13   11    9   19    3 |    15   24   15   21   32   17   24   14   25   17    17
  20  |    9   13    4   10   11    4   12   11    8   20    3 |    19   21   19   24   27   21   21   23   19   17    19
  21  |    8   10    5    6   14    4   11    6   11   26    3 |    19   26   25   23   34   22   27   22   21   20    23
  22  |   10   12    5    7   13    3   12    9   12   27    3 |    20   25   22   24   35   22   24   23   23   31    21
  23E |    9   13    3    9   12    5   10   11    9   15    3 |    22   22   19   18   25   17   23   20   23   20    18
  24  |   11   13    6    8   18    5   13   21   10   10    4 |    29   27   23   26   28   21   30   17   26   24    22
  25  |    8   14    6    6   17    4   15   11   13   13    4 |    22   30   22   22   30   20   27   20   25   20    21
  26E |   14   20   10   13   14    9   18   17   29   17    6 |    82   76   80   80   77   78   78   86   78   82    78
 X27  |    8  ---  ---  ---  ---   33  ---  ---  ---  ---    0 |    98  ---  ---  ---  ---   99  ---  ---  ---  ---   100
  28  |    6   12    6    7   16    4   11    6    8   13    3 |    23   31   22   21   34   22   28   20   29   21    23
  29  |   14   18    4    8   13    4   16   13   11   20    4 |    26   23   19   21   25   16   23   20   20   19    18
 X30  |    8  ---  ---  ---  ---   63  ---  ---  ---  ---    0 |    49  ---  ---  ---  ---   26  ---  ---  ---  ---    49
  31  |   13   12    7    7   17    6   11   11   12   19    4 |    25   28   22   23   38   24   28   20   26   18    22
  32  |    8    6    3    6   11    5    7   12    8   16    2 |    12   18   12   11   19   10   18   11   15   14    11
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |    9   14    5    9   14    5   13   12   12   20      |T   29   31   26   27   33   27   30   26   29   27    28
 WRMS |    9   14    5    8   12    5   12   10   10   18      |NE  28   29   24   25   32   26   29   24   27   24    27
 MEDI |    8   12    5    7   13    5   12   11   10   19      |MD  23   26   22   23   30   22   27   20   26   21    22

Table 3.1745.1   GPS week: 1745   Day: 1   MJD: 56460.000                            

        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  |    7    7    3    7    9    5   14   10   11   23    3 |    25   33   28   26   36   24   38   26   24   21    26
   2  |    9   11    6   13   10    4   10   13   12   21    3 |    20   18   19   20   22   16   21   20   22   15    16
   3  |    9   12    7    9   12    5   11    8   11   22    3 |    23   30   26   23   31   22   30   18   30   23    24
   4  |    8    8    4    5    6    3    7   11   14   16    3 |    21   24   25   21   28   21   28   25   25   23    22
   5  |   13   17    5   10   13    5   17   10   16   19    4 |    24   31   23   25   32   23   32   23   27   26    23
   6  |    9   11    5    8   12    4   10    8   12   19    3 |    13   19   14   13   21    9   19   10   20   16    11
   7  |    9   12    3    7   13    5   11    6   12   23    3 |    19   25   18   17   28   15   25   17   25   27    17
   8  |    8   10    4    6   11    4    8    7    9   24    2 |    16   22   16   16   17   15   23   17   20   24    15
   9  |    8   10    5    7    9    6    8    8   14   33    3 |    19   20   20   20   19   18   24   20   22   32    18
  10  |    6    9    4    6   10    4    7    7   13    9    2 |    14   18   15   14   21   13   20   14   17   16    14
  11  |    7   11    4    5   12    5   11    9   12   13    3 |    36   45   40   40   48   39   44   40   36   38    39
  12  |    9   22    6   12   16    7   17    8   10   15    4 |    20   30   20   19   27   18   28   17   25   19    18
  13E |    9   11    4    7   12    5   13   12   10   20    3 |    25   27   25   19   26   23   26   27   27   25    23
  14E |   10   12    5    7   14    4   11   13   15   19    3 |    24   25   23   22   25   20   26   25   25   22    21
  15E |    9   18    4   11   13    4   19   13   13    9    4 |    18   25   16   19   22   18   26   22   26   22    17
  16  |    8   17    5    9   16    6   14    9   14   22    4 |    13   24   17   15   23   14   24   13   26   18    15
  17  |    6   16    4    8   16    3   16    8   14   14    4 |    16   19   14   15   31   13   23   13   22   14    14
  18  |    9   14    6    8   15    4   14    9   11   23    3 |    18   21   13   19   23   15   24   17   17   14    13
  19  |    6   12    4    9   18    4   13    9    9   18    3 |     7   21   14   14   30   11   22   12   19   15    12
  20  |    8   13    4    9   11    4   11    8   13   20    3 |    18   19   15   18   20   15   21   19   16   15    14
  21  |    6   10    3    5   13    2    9    8   14   25    3 |    16   21   19   18   25   15   22   17   23   13    17
  22  |    9   14    6    8   16    5   12    8   10   23    3 |    19   22   16   20   29   17   23   18   15   23    16
  23E |    8   15    3   10    9    4   10    9   10   14    3 |    18   22   14   14   22   13   22   14   21   16    14
  24  |   14   14    3    8   13    6   12   11    8   13    3 |    15   21   16   13   24   13   25   12   21   14    13
  25  |   10   15    5    6   21    5   14   10   12   12    4 |    20   25   18   19   25   16   25   16   22   16    17
  26E |   18   25   10   15   14   13   20   17   39   18    7 |    61   55   61   61   58   58   58   60   74   61    58
 X27  |    7  ---  ---  ---  ---   25  ---  ---  ---  ---    0 |   115  ---  ---  ---  ---  117  ---  ---  ---  ---   114
  28  |    8   12    4    6   14    5    9    7   13   11    3 |    16   23   17   16   28   14   24   13   23   16    16
  29  |   13   16    4    8   15    3   15   11    8   17    4 |    18   21   16   18   27   15   21   16   20   16    15
 X30  |    7  ---  ---  ---  ---   78  ---  ---  ---  ---    0 |    38  ---  ---  ---  ---   25  ---  ---  ---  ---    39
  31  |    8   12    4    8   19    5   10    9   18   18    3 |    17   26   19   18   37   18   27   16   26   16    18
  32  |    9    7    3    6   14    4    6    9    7   13    2 |    17   19   13   13   21   12   21   14   18   14    13
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |    9   14    5    8   14    5   13   10   14   19      |T   23   25   20   20   27   21   26   19   24   21    22
 WRMS |    9   14    5    7   12    5   12    9   10   17      |NE  22   23   18   18   26   20   25   17   22   19    21
 MEDI |    8   12    4    8   13    5   11    9   12   18      |MD  18   22   17   18   25   16   24   17   22   16    17

Table 3.1745.2   GPS week: 1745   Day: 2   MJD: 56461.000                            

        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    9    4    6    7    5   15   10   12   20    3 |    31   37   34   32   41   30   44   33   35   27    33
   2  |    6   13    6   14   11    5   12   13   10   20    3 |    17   24   23   24   22   17   23   21   25   15    19
   3  |   10   18    4    9   11    6   12    8   14   19    3 |    26   34   27   22   30   23   31   21   26   26    25
   4  |    5   10    5    8    9    7    7   11   11   17    3 |    22   27   27   27   30   21   29   25   31   18    25
   5  |   13   20    4    9   10    7   16   11   13   20    4 |    35   44   36   27   37   34   39   32   31   37    33
   6  |    8   12    4    8   10    6   13    7   14   16    3 |    17   25   18   13   24   14   24   15   20   16    16
   7  |   12   13    4   10   16    5   16    7   10   24    4 |    31   25   24   25   32   22   25   20   25   28    22
   8  |    8   10    3    8   12    3    9    7    8   25    2 |    22   21   23   22   23   22   24   21   20   26    21
   9  |    7   13    3    7   10    4    9    9   11   33    3 |    26   23   24   22   25   22   26   23   21   34    22
  10  |    7    8    4    9   11    5   11    9    9   11    3 |    13   17   18   14   19   14   17   15   18   17    14
  11  |    6   12    3    9   11    5   11   10   13   13    3 |    47   51   50   47   58   49   53   49   50   46    49
  12  |   10   27    6   16   16    8   18    9    9   15    5 |    20   32   21   20   32   17   26   16   22   20    18
  13E |    7   11    5   10   10    4   13   20    9   18    4 |    39   37   39   42   35   38   39   39   35   37    37
  14E |    7   14    5    8   14    5   15    8    9   13    3 |    20   26   25   20   31   19   24   20   26   17    21
  15E |    9   23    4   12   12    6   18   13   14   11    4 |    19   25   18   17   21   15   23   16   17   21    15
  16  |    9   21    5   13   13    6   15   11   12   15    4 |    22   33   25   15   28   18   27   18   25   18    21
  17  |    9   16    4   11   14    4   18    9   12   13    4 |    13   23   22   18   32   17   24   17   28   15    18
  18  |    9   18    5   10   11    5   15    7   13   22    4 |    17   24   17   19   20   18   22   15   14   14    14
  19  |    7   14    5   11   14    5   13   12   13   17    3 |    17   24   21   17   30   16   23   16   22   19    18
  20  |    7   13    4    9   10    4   13    9   10   21    3 |    17   18   18   19   19   16   17   20   19   15    16
  21  |    7   15    3    6   18    6   11    9   17   25    3 |    24   31   26   23   34   22   26   20   21   18    23
  22  |    9   15    5    8   13    4   14    6   17   18    3 |    18   25   22   20   29   20   25   18   19   21    19
  23E |    6   15    3   10   13    4   12   11   10   13    3 |    24   26   23   20   24   20   23   22   23   22    21
  24  |   14   13    4   10   15    7   14   11   10    9    4 |    18   23   21   15   31   20   28   18   24   17    18
  25  |    8   17    5    9   18    6   13   10    9    9    4 |    25   31   24   20   34   21   26   20   25   20    22
  26E |   22   26   10   12   25   28   25   26   68   23    8 |    84   80   77   78   79   81   79   86   92   84    78
 X27  |    7  ---  ---  ---  ---   31  ---  ---  ---  ---    0 |    87  ---  ---  ---  ---   84  ---  ---  ---  ---    89
  28  |    7   12    4   10   19    3   15   10   12   15    4 |    25   29   26   20   36   22   29   20   28   26    24
  29  |   12   20    4    8   13    6   17    8   11   15    4 |    25   25   20   19   23   18   23   19   22   17    18
 X30  |    7  ---  ---  ---  ---   75  ---  ---  ---  ---    0 |    47  ---  ---  ---  ---   42  ---  ---  ---  ---    49
  31  |    9   12    5    6   19    4   13    8   19   18    4 |    22   32   26   20   40   23   27   22   32   20    24
  32  |    8    8    4    9    9    3    7   12   12   16    3 |    14   18   17   14   20   12   20   12   17   13    13
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |   10   16    5   10   14    7   14   11   17   18      |T   27   29   26   23   31   25   28   23   27   24    26
 WRMS |   10   16    4    9   12    5   13   10   11   20      |NE  25   27   24   21   29   24   26   21   24   21    25
 MEDI |    8   13    4    9   12    5   13    9   12   17      |MD  22   25   23   20   30   20   25   20   24   20    21

Table 3.1745.3   GPS week: 1745   Day: 3   MJD: 56462.000                            

        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    7    4    8    9    4   16   12    8   20    3 |    30   39   37   33   45   34   44   34   36   31    35
   2  |    8   12    6   15   10    5   11    9    9   20    3 |    25   28   27   29   27   24   28   26   32   21    24
   3  |    8   11    5   11   12    8   12   13   12   21    3 |    33   41   36   36   39   33   39   32   42   38    35
   4  |    9    9    4    8    8    5    8   10   10   17    3 |    27   36   33   30   39   31   35   33   40   28    31
   5  |   12   16    6    7   12    6   16   10   13   21    4 |    40   45   36   33   41   33   45   34   39   38    36
   6  |    7   11    4   10    8    6   13    8   10   19    3 |    17   27   18   14   22   15   25   13   26   19    16
   7  |    6   13    4   12   13    4   15    7   10   21    3 |    28   31   26   26   33   24   28   22   35   31    25
   8  |   11    7    4    9   14    5    8   10    7   25    3 |    26   30   27   28   28   28   31   24   37   30    26
   9  |    9    9    4    9   11    5   10    8    7   34    3 |    25   31   26   24   26   24   28   23   36   34    25
  10  |   10    7    4    7   11    4    7    9   10    9    3 |    15   20   15   15   22   17   21   19   24   19    15
  11  |    8   13    4    8   13    4    9   11    9   14    3 |    46   58   51   52   62   51   54   52   54   49    51
  12  |    9   22    6   13   14    8   19   11   13   13    5 |    23   34   23   22   31   19   30   20   33   24    21
  13E |   10   10    5   11   10    5   12   12    9   15    3 |    31   28   23   21   27   25   28   28   32   23    23
  14E |    8   11    4    5   11    5   11    8   11   14    3 |    27   32   27   21   32   26   31   22   36   22    25
  15E |   12   18    6   11   12    5   23   16   15   12    5 |    21   26   19   16   24   16   27   18   26   22    16
  16  |    9   22    5   11   14    6   13   11   12   17    4 |    23   35   22   15   28   18   29   17   32   19    20
  17  |    8   14    5    9   17    5   18   10   10   13    4 |    18   25   18   16   33   17   24   13   29   12    17
  18  |    9   13    6   11   11    4   12    7   11   20    3 |    18   24   18   22   23   17   22   18   26   16    16
  19  |    7   12    5   11   16    5   14   14   13   17    4 |    14   25   16   17   31   14   23   15   27   14    15
  20  |    9   13    5   12   12    5   13    7    8   21    3 |    22   28   22   22   26   22   27   23   31   19    21
  21  |    9   11    4    4   14    4   10    9   15   27    3 |    25   30   24   25   30   23   28   23   37   21    25
  22  |    9   12    5    9   12    3   10    6   10   15    3 |    25   29   25   27   33   24   27   24   31   24    24
  23E |   10   12    4   11   14    3   13    7    7   13    3 |    24   23   21   16   21   18   25   17   25   18    18
  24  |   10   12    5    9   12    7   12   11    9   12    3 |    16   25   16   15   26   13   25   15   26   16    15
  25  |    6   13    4    8   16    7   14   14    9   14    3 |    21   31   23   24   29   21   29   26   28   27    22
  26E |   35   24   11   10   20   19   20   36   57   49   10 |    76   69   62   56   63   69   66   68   91   71    62
 X27  |    8  ---  ---  ---  ---   25  ---  ---  ---  ---    0 |   101  ---  ---  ---  ---  105  ---  ---  ---  ---   103
  28  |   11   12    4   12   15    5   12   10   10   12    3 |    25   31   25   19   30   24   27   19   39   18    23
  29  |   15   20    5    9   15    3   18   13   11   13    4 |    29   25   20   21   26   20   26   21   27   18    19
 X30  |    8  ---  ---  ---  ---   59  ---  ---  ---  ---    0 |    37  ---  ---  ---  ---   29  ---  ---  ---  ---    36
  31  |    9   12    6    6   14    6   12    7   11   19    3 |    28   31   25   20   39   25   29   21   37   17    24
  32  |    8    8    4    7   11    6    7    9   11   18    3 |    19   24   17   14   23   15   25   15   30   11    17
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |   11   14    5   10   13    6   14   12   15   20      |T   29   32   25   24   31   27   30   24   34   25    27
 WRMS |   10   14    5    9   12    5   12   10   10   19      |NE  27   30   24   23   31   26   29   22   33   23    27
 MEDI |    9   12    5    9   12    5   12   10   10   17      |MD  25   30   23   22   29   24   28   22   32   21    23

Table 3.1745.4   GPS week: 1745   Day: 4   MJD: 56463.000                            

        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    7    4    7   12    5   17   10    7   22    3 |    24   36   33   31   45   27   39   29   33   26    31
   2  |   10    8    5   15    8    3   11   10    7   20    3 |    17   23   22   25   28   20   23   25   24   18    20
   3  |    9   14    5    9   21    7   14   10    8   23    4 |    37   46   38   39   49   36   44   36   43   40    38
   4  |    9    6    4    6    9    5   11    8    8   17    2 |    18   28   24   23   33   22   26   25   27   23    23
   5  |   14   16    5    7   11    6   18   10   12   21    4 |    32   41   34   34   37   33   45   32   35   36    34
   6  |    8   11    4    8   12    6   13    8   12   21    3 |    19   23   19   16   26   14   26   19   23   23    17
   7  |    9   12    4    7   13    4   14    7    9   22    3 |    26   26   20   19   30   19   25   20   29   27    20
   8  |    9    8    3    7   16    2    8    8   10   24    3 |    18   21   20   19   21   18   23   19   25   24    18
   9  |    8   11    5    6   13    4    9    8    7   32    3 |    19   23   21   19   21   21   24   20   27   33    19
  10  |    9    6    3    5   12    5   10    8    7   13    2 |    13   19   16   17   27   15   18   19   21   21    16
  11  |    9   12    5    8   16    5   10   13    8   13    3 |    40   47   43   44   58   42   43   41   46   41    43
  12  |   10   24    6   14   12    6   20   13   14   14    5 |    16   32   18   19   27   16   29   20   28   19    18
  13E |    7   11    4    5   12    6   13    9    8   12    3 |    24   23   22   22   24   21   25   23   28   24    22
  14E |    9   10    5    7   14    4   14   11   11   12    3 |    19   22   19   21   26   19   22   21   23   22    19
  15E |   11   24    6   11   16    5   25   25   13   17    6 |    21   31   23   26   29   22   32   34   27   32    24
  16  |    8   20    4   10   14    5   13   12    9   19    4 |    16   28   20   15   26   18   25   17   25   15    17
  17  |   10   15    5    7   20    5   22    6    7   14    4 |    15   24   18   20   36   16   26   16   26   15    18
  18  |    9   16    7    9   11    6   13    8   12   17    3 |    19   24   13   21   26   17   21   18   20   12    14
  19  |    9   13    4    9   19    5   11   13    6   15    3 |    13   22   15   14   34   13   21   15   22   14    14
  20  |   10   13    5   12   14    4   12    6    7   21    3 |    17   20   19   20   26   17   21   20   19   16    17
  21  |   10   12    3    4   12    5   13    9    9   27    3 |    20   26   21   22   31   22   24   24   24   17    21
  22  |    9   13    5    7   12    5   13    9   11   17    3 |    25   27   21   26   35   24   22   25   25   27    22
  23E |    8   12    4   10   19    5   12    9   10   14    3 |    23   24   20   17   24   18   25   19   27   19    19
  24  |   13   13    4    5   13    4   15   12    9   16    3 |    16   21   17   14   24   14   24   17   22   18    14
  25  |    5   16    4    5   15    7   14   18   11   10    4 |    13   26   16   14   24   16   24   24   22   17    15
  26E |   22   31   12    9   21   22   22   27   72   35    8 |   136  132  133  133  134  131  134  134  137  134   131
 X27  |    8  ---  ---  ---  ---   42  ---  ---  ---  ---    0 |    94  ---  ---  ---  ---   82  ---  ---  ---  ---    96
  28  |    7   13    4   10   14    4   12    8    8   12    3 |    17   27   18   16   30   16   24   19   27   18    18
  29  |   18   22    6    9   17    4   24   17   15   13    5 |    24   25   17   17   30   15   28   26   24   20    17
 X30  |    8  ---  ---  ---  ---   34  ---  ---  ---  ---    0 |    32  ---  ---  ---  ---   18  ---  ---  ---  ---    32
  31  |   10   12    4    8   13    4   11    7    8   18    3 |    20   26   19   17   33   18   25   17   25   16    18
  32  |    9    8    5   14   16    4    6    7    7   20    3 |    15   19   16   18   26   13   20   16   20   18    15
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |   11   15    5    9   15    6   15   12   16   19      |T   26   30   25   25   34   25   30   26   30   26    26
 WRMS |   10   15    5    8   13    5   13   10    8   19      |NE  23   26   20   20   30   21   26   21   25   21    23
 MEDI |    9   12    4    8   13    5   13    9    9   17      |MD  19   25   20   19   28   18   25   20   25   20    19

Table 3.1745.5   GPS week: 1745   Day: 5   MJD: 56464.000                            

        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  |   15    8    7    9   13    6   17   13   11   26    4 |    22   32   29   26   42   21   42   23   24   24    26
   2  |    8    8    7   11   10    5   13    9   10   20    3 |    15   23   20   18   25   17   24   18   28   14    17
   3E |   15   13    4   10   19    7   15   16   10   31    4 |    62   63   60   63   66   58   62   59   58   60    61
   4  |    8    8    7    6   10    6    8    6   10   19    3 |    22   31   27   23   34   25   31   21   33   21    26
   5  |   15   17    8    8   12    7   18    9    9   23    4 |    35   40   32   29   38   27   40   29   33   33    31
   6  |    9   12    5    9   15    6   11   12    8   24    3 |    15   25   15   15   30   13   22   19   21   25    16
   7  |   11   11    4    7   13    5   18    8    9   23    3 |    24   27   20   20   32   20   25   20   28   27    20
   8  |   11    8    4    6   14    3   13    9    7   26    3 |    22   23   21   20   22   21   26   19   26   24    20
   9  |    8    9    6    6   14    3   14    9    5   33    3 |    21   23   23   21   21   20   26   17   22   30    19
  10  |   10    7    5    7   12    6    9    8    7   14    3 |    11   17   14   13   22   12   17   15   19   19    12
  11  |   10   11    5    7   16    5   14   15    8   16    4 |    32   39   35   35   48   31   39   31   33   30    33
  12  |   16   24    6   14   14    8   23   14   11   16    5 |    22   30   19   18   30   16   29   17   26   21    18
  13E |    8   10    3    6   11    4   12   12    6   16    3 |    21   22   20   21   24   19   26   19   20   23    19
  14E |    8   13    5    6   13    5   13   11   10   14    3 |    20   29   24   19   29   21   25   22   29   22    22
  15E |   12   24    6   11   17    7   26   19   11   16    5 |    28   33   30   27   32   30   35   32   29   33    27
  16  |   10   23    8   12   14    6   14   14    7   21    4 |    19   32   17   15   27   16   26   19   24   18    17
  17  |    6   13    5   10   21    4   18    8    7   15    4 |    15   21   17   17   38   15   26   16   26   15    17
  18  |    7   16    7    8   13    6   13   10    8   18    3 |    16   21   16   17   25   16   18   17   18   14    12
  19  |    8   13    6   12   21    4   15   18    7   16    4 |    15   23   17   17   37   13   24   17   23   15    16
  20  |   10   11    6   12   12    5   14    6   11   22    3 |    12   17   14   17   21   13   22   15   18   12    12
  21  |    8   16    6    7   11    4   17   12   14   28    4 |    21   25   22   17   27   18   26   20   23   16    19
  22  |    8   13    5    5   14    6   13    9    8   21    3 |    19   25   22   20   32   18   22   20   22   27    19
  23E |   10   13    5   10   12    4   12    8   10   15    3 |    25   26   19   21   27   21   28   23   25   26    20
  24  |    9   12    6    7   12    7   15   16    9   20    4 |    15   20   20   15   25   15   23   14   20   15    15
  25  |   12   16    7    7   11    5   15   23    7   16    4 |    18   25   20   15   24   15   22   22   22   19    16
  26E |   22   23   12   10   26   10   29   22   47   23    9 |   143  139  144  143  140  146  140  141  152  141   142
 X27  |    8  ---  ---  ---  ---   35  ---  ---  ---  ---    0 |    85  ---  ---  ---  ---   84  ---  ---  ---  ---    86
  28  |    7   12    4    7   13    4   13   12    9   14    3 |    20   27   19   18   30   17   26   20   30   19    19
  29  |   15   26    6   11   19    6   19   20   12   18    5 |    18   25   16   17   30   14   24   22   23   19    14
 X30  |    8  ---  ---  ---  ---   39  ---  ---  ---  ---    0 |    41  ---  ---  ---  ---   20  ---  ---  ---  ---    43
  31  |   10   14    4   13   10    7   20   10   10   20    4 |    23   30   24   22   34   22   27   20   29   20    22
  32  |   10    7    4    9   15    2    7    6   11   17    3 |    14   19   16   15   25   13   22   14   23   14    15
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |   11   15    6    9   15    6   16   13   13   21      |T   27   31   26   25   34   25   31   25   30   26    27
 WRMS |   10   15    6    8   14    5   16   11    9   19      |NE  22   25   20   19   29   20   26   19   24   20    22
 MEDI |   10   13    6    8   13    6   14   11    9   19      |MD  21   25   20   18   30   18   26   20   24   21    19

Table 3.1745.6   GPS week: 1745   Day: 6   MJD: 56465.000                            

        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    8    4    7   10    6   14   10   13   31    3 |    38   47   43   43   57   38   51   39   39   38    42
   2  |    7   11    6   15   13    5   17    9   12   21    4 |    21   27   25   30   35   22   26   26   31   19    24
   3E |   13   15    5   10   15    8   17   16   13   25    4 |    36   44   36   35   46   35   42   31   38   36    35
   4  |   11    6    4    8    9    5   10    6    9   20    3 |    26   36   33   34   44   30   34   30   36   25    32
   5  |   12   16    7    9   14    6   20   11   17   22    4 |    42   49   42   37   43   39   54   43   38   47    41
   6  |    9   13    4   10   13    8   12   10    9   21    3 |    20   26   18   18   29   19   25   20   21   25    17
   7  |    9   11    4    9   15    6   20    7   10   27    3 |    28   28   26   29   32   25   30   23   27   30    24
   8  |    8    7    2    7   20    3   10    7   11   25    3 |    18   22   19   24   24   20   27   19   21   22    19
   9  |    8    9    4    7   16    5   12    8   11   33    3 |    23   25   23   24   25   23   27   21   25   30    22
  10  |    8    7    4    8   13    3   10    5   13   14    3 |    15   22   22   23   32   20   19   24   22   27    20
  11  |    9   12    5    7   14    5   11   15   12   18    3 |    54   65   58   60   73   59   61   56   56   54    58
  12  |   12   27    7   15   14    6   21   10   13   12    5 |    21   35   19   20   32   17   29   19   25   22    19
  13E |   10   13    3    7   14    5   13   10    8   10    3 |    22   25   19   24   27   22   29   26   23   21    21
  14E |    9   12    5    9   16    5   13   12   10   17    3 |    28   31   29   24   30   25   29   25   33   25    26
  15E |   10   25    6   12   14    5   24   15   15   15    5 |    35   34   29   30   36   28   32   30   34   32    28
  16  |   18   20    6   16   13    7   16   14   15   19    5 |    20   31   20   17   26   19   30   17   28   18    18
  17  |   11   14    5    8   22    4   19   12   11   15    4 |    17   23   21   24   42   19   26   22   27   17    20
  18  |    8   16    6   12   14    6   15   13   11   19    4 |    20   26   19   27   32   22   21   23   19   21    18
  19  |    9   14    5   11   19    4   11   17   11   15    4 |    17   27   20   20   39   18   23   19   24   17    18
  20  |   10   10    4    9   15    4   12    6   17   22    3 |    23   26   22   26   32   24   24   25   18   22    22
  21  |   13   14    4    8   11    4   14   12   15   31    4 |    26   32   26   24   37   24   30   26   26   22    25
  22  |    9   14    6    8   14    5   14    8    9   23    3 |    30   32   30   34   43   32   28   32   29   39    29
  23E |    7   10    4   11   12    5   10    9    9   12    3 |    19   21   22   20   25   17   25   19   21   27    19
  24  |   11   13    3    6   11    6   12    9    9   14    3 |    17   24   19   14   24   19   21   15   21   11    16
  25  |   11   16    6    7   12    4   14   15    8   14    4 |    24   28   22   18   25   19   23   23   23   20    20
  26E |   20   19    7    9   15   10   17   13   39   18    6 |   166  159  161  157  166  157  163  151  158  144   158
 X27  |    8  ---  ---  ---  ---   22  ---  ---  ---  ---    0 |    95  ---  ---  ---  ---   89  ---  ---  ---  ---    99
  28  |    8   11    2    8   16    5   14   16   13   17    4 |    23   25   21   20   29   19   27   27   25   25    20
  29  |   16   22    7   11   19    5   21   19   14   17    5 |    25   26   19   18   28   17   24   24   20   21    18
 X30  |    8  ---  ---  ---  ---   60  ---  ---  ---  ---    0 |    57  ---  ---  ---  ---   24  ---  ---  ---  ---    56
  31  |   11   13    5   13   13    5   14   12   10   20    4 |    24   31   19   20   34   22   27   23   24   21    20
  32  |   10    9    3    9   15    4    6    8   16   16    3 |    16   22   16   17   30   14   20   17   20   18    16
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |   11   14    5   10   15    5   15   12   14   20      |T   32   34   29   30   39   30   34   29   31   29    31
 WRMS |   11   14    5   10   13    5   14   11   11   18      |NE  28   30   25   25   35   26   29   25   26   25    28
 MEDI |   10   13    5    9   14    5   14   10   11   18      |MD  23   27   22   24   32   22   27   24   25   22    21



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 4.1745   GPS week: 1745   MJD: 56459.0-56465.0

CENT| CLK EPO  |        BRUX       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3028 |U    8     7    22 |U    6     9    24 |U    8     7    20 |
emr | emr 2875 |    10     9    26 |U    8    15    25 |     9     8    25 |
esa | esa 2880 |     8     7    25 |U    6    10    22 |     8     7    21 |
gfz | gfz 2875 |U    8     7    24 |U    6    16    28 |U    8     7    21 |
grg | grg 2880 |U   11    10    36 |U   12    26    45 |    13    10    30 |
igr | igr 2879 |     8     7    25 |     6     9    20 |     9     8    21 |
igs | igs 2854 |     8     7    24 |     6    11    22 |     9     7    20 |
jpl | jpl 2874 |    10     8    27 |     8    16    27 |    10     9    27 |
mit | mit 2880 |     9     9    27 |U    8    21    33 |U   10     8    22 |



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 5.1745.0   GPS week: 1745   Day: 0   MJD: 56459.0

CENT| CLK EPO  |        BRUX       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3019 |     7     5    18 |     6    10    21 |     7     6    18 |
emr | emr 2876 |     9     8    25 |     7    16    26 |     6     5    25 |
esa | esa 2880 |     7     6    21 |     5     9    14 |     7     6    20 |
gfz | gfz 2876 |     7     5    20 |     7    23    32 |     7     5    18 |
grg | grg 2880 |    11    10    35 |    10    34    64 |    17     9    29 |
igr | igr 2880 |     7     6    21 |     5     8    14 |     6     5    19 |
igs | igs 2867 |     7     6    20 |     5     8    16 |     6     4    20 |
jpl | jpl 2876 |     8     6    23 |     7    20    29 |    10     9    45 |
mit | mit 2880 |     7     4    18 |     8    27    45 |     7     5    21 |

Table 5.1745.1   GPS week: 1745   Day: 1   MJD: 56460.0

CENT| CLK EPO  |        BRUX       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3024 |     6     6    25 |     4     9    25 |    10     6    19 |
emr | emr 2876 |     9     8    20 |     8    16    23 |    10     8    26 |
esa | esa 2880 |     7     7    23 |     6     8    21 |    10     8    21 |
gfz | gfz 2876 |     7     6    22 |     6    21    42 |    10     8    20 |
grg | grg 2880 |    11    13    40 |    11    27    52 |    16     9    36 |
igr | igr 2880 |     7     7    23 |     4     7    18 |    10     9    21 |
igs | igs 2853 |     7     6    21 |     5     7    22 |    10     8    21 |
jpl | jpl 2874 |     9     7    21 |     8    15    26 |    11    11    27 |
mit | mit 2880 |     6     6    20 |     9    26    48 |    13     8    23 |

Table 5.1745.2   GPS week: 1745   Day: 2   MJD: 56461.0

CENT| CLK EPO  |        BRUX       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3042 |     5     5    15 |     5     9    26 |     8     9    21 |
emr | emr 2876 |     7     6    20 |     7    19    28 |    10    11    28 |
esa | esa 2880 |     4     5    15 |     5    19    28 |     9    11    24 |
gfz | gfz 2876 |     5     5    16 |     5    21    30 |     9    12    25 |
grg | grg 2880 |     8     8    35 |    10    22    37 |    14    12    41 |
igr | igr 2877 |     4     5    15 |     6    18    26 |     9    12    27 |
igs | igs 2877 |     5     5    15 |     5    19    28 |     8    11    24 |
jpl | jpl 2876 |     9     9    22 |     7    21    33 |     9    12    27 |
mit | mit 2880 |     5     5    16 |     7    18    27 |    10     9    25 |

Table 5.1745.3   GPS week: 1745   Day: 3   MJD: 56462.0

CENT| CLK EPO  |        BRUX       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3003 |    10     8    25 |     6     8    25 |     9     7    25 |
emr | emr 2876 |    11     9    26 |     7     6    24 |    10     7    32 |
esa | esa 2880 |     9     9    28 |     6     7    22 |     9     6    28 |
gfz | gfz 2876 |    10     8    26 |     6     7    23 |    10     6    29 |
grg | grg 2880 |    13    12    39 |    10    23    32 |    13    10    22 |
igr | igr 2880 |     9     8    27 |     6     7    22 |     9     6    29 |
igs | igs 2879 |    10     8    27 |     6     6    21 |     9     6    29 |
jpl | jpl 2874 |    10     9    27 |     8    20    29 |    10     6    33 |
mit | mit 2880 |     9    10    26 |     7    18    29 |    11     9    28 |

Table 5.1745.4   GPS week: 1745   Day: 4   MJD: 56463.0

CENT| CLK EPO  |        BRUX       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3016 |    12     8    36 |     6     7    22 |     8     7    14 |
emr | emr 2876 |    15    12    46 |     8    14    17 |     8     8    20 |
esa | esa 2880 |    15    10    44 |     5     6    20 |     8     6    15 |
gfz | gfz 2876 |    14    10    43 |     5     8    20 |     8     6    16 |
grg | grg 2880 |    17    12    53 |    10    24    45 |    11    11    29 |
igr | igr 2880 |    15    10    44 |     5     6    20 |     8     7    16 |
igs | igs 2876 |    15    10    44 |     5     6    19 |     8     6    14 |
jpl | jpl 2876 |    15    10    47 |     5     8    18 |     8     6    18 |
mit | mit 2880 |    15    10    42 |     8    20    29 |    10     8    15 |

Table 5.1745.5   GPS week: 1745   Day: 5   MJD: 56464.0

CENT| CLK EPO  |        BRUX       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3051 |     7     6    16 |     7    12    21 |     8     6    18 |
emr | emr 2876 |     9     7    22 |    10    16    24 |    10     8    17 |
esa | esa 2880 |     6     4    20 |     8    11    21 |     8     6    16 |
gfz | gfz 2876 |     7     5    20 |     8    12    19 |     7     5    15 |
grg | grg 2880 |     7     7    27 |    19    19    39 |    10    12    28 |
igr | igr 2880 |     6     5    21 |     8    11    19 |     8     7    14 |
igs | igs 2846 |     6     5    19 |     8    14    21 |     8     7    15 |
jpl | jpl 2875 |     8     6    22 |     7    11    24 |     9     7    14 |
mit | mit 2880 |     6     4    18 |     8    15    23 |    10     8    19 |

Table 5.1745.6   GPS week: 1745   Day: 6   MJD: 56465.0

CENT| CLK EPO  |        BRUX       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3041 |     7     8    20 |     9     9    31 |     8    11    23 |
emr | emr 2875 |    10    12    25 |    11    18    34 |    11     8    26 |
esa | esa 2880 |     8     8    22 |    10     9    32 |    10     8    23 |
gfz | gfz 2873 |     7     8    22 |     8    21    28 |     9     9    25 |
grg | grg 2880 |    10    10    25 |    13    32    44 |    10    10    26 |
igr | igr 2876 |     7     9    22 |     8     8    24 |    10     9    23 |
igs | igs 2780 |     8     9    23 |     9    19    30 |    10     7    21 |
jpl | jpl 2872 |     8     9    27 |    14    16    32 |    10     9    25 |
mit | mit 2880 |    12    24    49 |     8    21    30 |    10     8    24 |


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 6.1745   GPS week: 1745   MJD: 56459.500-56465.500

                                                         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 |     -53     -10     -52      60      5 |       2     15
            |      10      17      89      29      4 |       2
emr   uuuuu |      56      21     -85      87     17 |      24     30
            |      14      22      87      86     10 |       2
esa   uuuuu |     -12     -26      71      55      2 |       9     17
            |      13       6      26      25      2 |       3
gfz   uuuuu |     -11      20     -23     -98     -9 |       5     17
            |      16      27      99      97      3 |       5
grg   uuuux |       7     -19      77    -193     62 |       5     37
            |      18      10      75     101     43 |       9
igr   xxxxx |      -1       1     -23     -17     -3 |      -1     17
            |      16      19      59      48      4 |       4
irf   xxxxx |     -11       6     -68     -57     -3 |       3     15
            |       5       6      27      18      2 |       3
jpl   uuuuu |      30     -19      75     -11     -4 |      18     24
            |      27      55      76      41      8 |       5
mit   uuuuu |     -41      18    -161     -78     -4 |      22     27
            |      15      26     106      35      4 |       3
ngs   uuuuu |      86      58      23      71     -1 |      11     17
            |      47      50     157     119      4 |       3
sio   xxxxx |      62      24     169     126     -1 |      36     39
            |      44      73     126      65      4 |       2


Table 7.1745.0   GPS week: 1745   Day: 0   MJD: 56459.500

                                                         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 |     -59      -7     -41     114      2 |       3     16
emr   uuuuu |      29      32     -80     -33     10 |      22     29
esa   uuuuu |       8     -15      82      68      3 |      12     19
gfz   uuuuu |     -14       2      17     -50     -6 |      10     18
grg   uuuux |     -24     -20     113    -271      9 |       1     32
igr   xxxxx |      -1     -21       8      20     -8 |       3     17
irf   xxxxx |      -4      10     -98     -70     -3 |       5     17
jpl   uuuuu |      50     -31     153      26     -4 |      23     29
mit   uuuuu |     -16      19    -279     -92      1 |      22     28
ngs   uuuuu |      35      45     -80      34     -2 |      14     20
sio   xxxxx |     145     125      12     140      4 |      36     40

Table 7.1745.1   GPS week: 1745   Day: 1   MJD: 56460.500

                                                         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 |     -33     -28      91      54      8 |       2     16
emr   uuuuu |      55      64    -239      30     -1 |      22     29
esa   uuuuu |      -1     -30      97     101      0 |      11     18
gfz   uuuuu |     -37     -15     -10    -218     -5 |       8     18
grg   uuuux |       1     -22      19    -227     33 |      -1     32
igr   xxxxx |     -11     -27      49     -12     -7 |       1     17
irf   xxxxx |      -9       3     -63     -70     -3 |       5     18
jpl   uuuuu |      31      -1      35     -27    -13 |      22     29
mit   uuuuu |     -31     -10    -185     -49     -2 |      23     29
ngs   uuuuu |      72     152     -10     228      1 |      12     19
sio   xxxxx |      87      92     137     169      2 |      37     40

Table 7.1745.2   GPS week: 1745   Day: 2   MJD: 56461.500

                                                         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 |     -55     -26     -39      86      0 |       3     16
emr   uuuuu |      53      18      -7      37     25 |      22     29
esa   uuuuu |      -7     -20      91      64     -2 |      11     18
gfz   uuuuu |      -5       4      19    -132    -13 |       9     18
grg   uuuux |       5     -36     146    -252     33 |      -2     30
igr   xxxxx |      23       5     -99     -28     -7 |       1     17
irf   xxxxx |     -13      10    -101     -63     -2 |       5     17
jpl   uuuuu |      -9       6      85      36      8 |      20     27
mit   uuuuu |     -55      56    -324    -113     -2 |      24     29
ngs   uuuuu |     146      37     -50     130      3 |      13     19
sio   xxxxx |      41      80      -6     154      1 |      38     41

Table 7.1745.3   GPS week: 1745   Day: 3   MJD: 56462.500

                                                         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 |     -63       2     -22      52      4 |       3     17
emr   uuuuu |      55      -2     -88     222     27 |      25     30
esa   uuuuu |     -20     -30      77      30      5 |       9     19
gfz   uuuuu |     -17       9     112    -223     -8 |       7     20
grg   uuuux |       5      -3     -48    -307     40 |      -2     30
igr   xxxxx |     -20      -2     -21      -7     -1 |       0     19
irf   xxxxx |      -7       0     -32     -81     -1 |       5     18
jpl   uuuuu |      17       9     -76      27    -12 |      20     27
mit   uuuuu |     -38     -18     -69     -42     -5 |      25     29
ngs   uuuuu |     132      93     -78     216     -6 |      12     19
sio   xxxxx |      39     -21     255     204     -3 |      39     41

Table 7.1745.4   GPS week: 1745   Day: 4   MJD: 56463.500

                                                         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 |     -59     -22     -37      48      8 |       1     15
emr   uuuuu |      64      14     -18     162     24 |      25     30
esa   uuuuu |     -12     -30      59      56      2 |       7     17
gfz   uuuuu |     -12      28      13     -69    -13 |       4     19
grg   uuuux |      16     -19      57    -148     94 |       3     31
igr   xxxxx |      17      21     -16     -87      2 |      -3     18
irf   xxxxx |     -12       4     -41     -40     -7 |       2     16
jpl   uuuuu |      23      23      90     -73     -2 |      15     23
mit   uuuuu |     -41      30     -86     -55    -10 |      22     27
ngs   uuuuu |      68      16    -115     -35     -4 |      10     18
sio   xxxxx |      10     -33     208      81     -4 |      36     39

Table 7.1745.5   GPS week: 1745   Day: 5   MJD: 56464.500

                                                         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 |     -46     -13    -109      37     11 |       0     13
emr   uuuuu |      59       1    -157     108     15 |      26     32
esa   uuuuu |     -26     -28      20      37      3 |       6     13
gfz   uuuuu |      16      54    -133     -19     -5 |       0     12
grg   uuuux |      10     -20      81    -135    104 |      14     49
igr   xxxxx |      -5      19      22     -59     -3 |      -5     15
irf   xxxxx |     -16       0     -56     -38      0 |      -1     11
jpl   uuuuu |      77       0     117     -24     -8 |      12     17
mit   uuuuu |     -56      10     -58     -61     -5 |      20     23
ngs   uuuuu |      30       8     279     -19     -6 |       9     14
sio   xxxxx |      69     -64     300     125      0 |      35     36

Table 7.1745.6   GPS week: 1745   Day: 6   MJD: 56465.500

                                                         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 |     -53      21    -203      32      1 |      -1     13
emr   uuuuu |      76      21      -4      80     22 |      27     33
esa   uuuuu |     -25     -29      69      32      1 |       5     13
gfz   uuuuu |      -8      56    -178      27    -10 |      -3     13
grg   uuuux |      35     -15     170     -14    121 |      22     58
igr   xxxxx |     -12       8    -104      56      2 |      -7     16
irf   xxxxx |     -16      17     -83     -37     -4 |      -3     12
jpl   uuuuu |      23    -137     119     -41      2 |      11     17
mit   uuuuu |     -52      38    -126    -131     -7 |      17     21
ngs   uuuuu |     119      57     215     -54      5 |       6     14
sio   xxxxx |      46     -11     281       6     -6 |      33     35



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