[IGSREPORT-21802] Wk 1737 IGS Final Orbits

IGS ACC igs.acc at noaa.gov
Fri May 10 06:06:16 PDT 2013


Author:  AC Coordinator / NOAA NGS

sum-file Version 2.0
Final IGS Orbit Combination - Week 1737   (Apr 21, 2013 - Apr 27, 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:

igs1737[0-6].sp3  IGS GPS ephemeris files in SP3 format.
igs1737[0-6].clk  IGS GPS satellite and station clocks in clock RINEX format.
igs1737[0-6].cls  IGS GPS clock combination summary report.
igs17377.erp      Earth Rotation Parameters (ERP) and their rates as well as
                  Universal Time (UT1-UTC) and Length Of Day (LOD) associated 
                  with IGS ephemerides.
igs17377.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   | 10 20 32 10 20 32
                0  |  ESA   | 10 32 10 32 HERS NTUS UNSA
                0  |  GFZ   | 10 32 ADIS
                0  |  GRG   | 6 6 HRAO NTUS
                0  |  MIT   | NTUS TSKB TSKB
                1  |  COD   | 10 32 10 32
                1  |  ESA   | 10 32 10 32 NTUS
                1  |  GFZ   | 10 30 32
                1  |  GRG   | NTUS POL2 RAMO
                1  |  JPL   | ZAMB
                1  |  MIT   | 30 30 NTUS
                2  |  COD   | 10 18 30 10 18 30 XMIS XMIS
                2  |  EMR   | 32 32
                2  |  ESA   | 10 10 MATE NTUS UNSA
                2  |  GFZ   | 10 ADIS LHAZ MATE MCIL TSKB
                2  |  GRG   | 32 BRMU BRMU MATE NTUS
                2  |  JPL   | 32
                2  |  MIT   | 18 30 18 30 32 MDVJ NTUS MDVJ
                3  |  COD   | 9 10 9 10 JOZ2 BRMU JOZ2
                3  |  EMR   | 32 32 MCM4 MCM4 TLSE WES2
                3  |  ESA   | ONSA BRMU NTUS ONSA UNSA
                3  |  GFZ   | 30 ALGO BARH LHAZ MAC1 ONSA
                3  |  GRG   | 30 30 FAA1 MAC1 USNO ADIS FAA1 NTUS ONSA POLV USNO
                3  |  JPL   | 1 32
                3  |  MIT   | 30 BRMU NTUS KOSG
                4  |  COD   | 3 3 TLSE TLSE
                4  |  EMR   | USNO WUHN
                4  |  ESA   | WES2 UNSA WES2
                4  |  GFZ   | 30 BOGT FAA1 LHAZ WES2
                4  |  GRG   | FAA1 FAA1 NYAL USNO
                4  |  JPL   | 10 30
                4  |  MIT   | 3 30 32 3 30 32 BRMU
                5  |  COD   | CAS1 CAS1 HNPT
                5  |  EMR   | WUHN
                5  |  ESA   | TIXI UNSA
                5  |  GFZ   | 30 IRKJ UNSA
                5  |  GRG   | 16 30 16 30 FAA1 USNO ADIS FAA1 POLV
                5  |  JPL   | 32
                5  |  MIT   | 30 31 30 31 32 IRKJ IRKJ
                6  |  COD   | JOZ2 XMIS KOSG
                6  |  EMR   | 32 32 THTI WUHN
                6  |  ESA   | 30 30 UNSA
                6  |  GFZ   | ADIS NTUS
                6  |  GRG   | 32 32 NTUS KIT3 LHAZ NTUS TLSE
                6  |  JPL   | 32
                6  |  MIT   | 31 32 31 32 MDVJ MDVJ

 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. 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.

 7. 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 |    -.8    2.0   -2.1     -37      6    -16     .08
       EMR  |   0 |   -1.5  -10.9   13.9       3      6      9     .39
       ESA  |   0 |    1.4   -1.0   23.9      39    -65     -3     .21
       GFZ  |   0 |    -.4     .6    -.2     -40    -34      8    -.20
       GRG  |   0 |    4.4   -6.1   14.6     -45      1     -9     .40
       JPL  |   0 |    2.1     .2   18.0     -64     16    -10     .04
       MIT  |   0 |     .8   -3.7   18.3     -11      2    -21     .01
       NGS  |   0 |    1.2   -2.6   17.4    -124    -49      9     .80
       SIO  |   0 |    -.5   -2.4  -21.7     -41   -167    109     .15

       COD  |   1 |    -.4     .9   -2.1     -30    -15      1     .30
       EMR  |   1 |    2.0  -10.4   16.7       1      4      7     .35
       ESA  |   1 |     .8    2.9   24.7      22    -47     -9     .36
       GFZ  |   1 |    -.6     .5    -.6     -45    -34      7    -.11
       GRG  |   1 |    6.3   -5.4   34.1     -32     -8    -46     .47
       JPL  |   1 |     .4     .0   20.9     -82     29    -17     .30
       MIT  |   1 |    5.1   -6.8   20.3     -11     -4    -23     .31
       NGS  |   1 |    7.6   -1.1   16.7     -95    -98     80     .62
       SIO  |   1 |     .2   -5.7   -4.1     -61   -120    250     .30

       COD  |   2 |    -.5     .8   -1.5     -33     -1     -3     .28
       EMR  |   2 |   -1.3   -6.3   20.1       1      8     -5     .43
       ESA  |   2 |    -.4     .4   34.7      -9    -24    -12     .48
       GFZ  |   2 |     .1     .1    -.2     -43    -33      3    -.08
       GRG  |   2 |     .2    -.2   26.5     -27    -20    -30     .62
       JPL  |   2 |    3.0   -1.2   20.3     -79     44    -57     .78
       MIT  |   2 |    -.2   -2.7   21.1     -11      5    -20     .44
       NGS  |   2 |    4.5   -6.7   18.0    -144    -35     34     .79
       SIO  |   2 |    -.6    -.2    4.4      11    -60    316     .27

       COD  |   3 |    -.6     .7   -1.5     -52    -25     18     .52
       EMR  |   3 |    2.7   -1.9   20.1       2      2     -1     .43
       ESA  |   3 |    1.4    3.0   31.1      40    -88      8     .29
       GFZ  |   3 |    -.1     .4     .1     -33    -49      2    -.25
       GRG  |   3 |    1.8    2.0   31.7     -11      8      2     .49
       JPL  |   3 |    9.3     .9   18.4     -34     31     -8     .62
       MIT  |   3 |    4.7   -1.6   25.3      -3      0    -24     .33
       NGS  |   3 |    5.2    1.1   17.9    -106    -63     53     .77
       SIO  |   3 |    1.7    1.6   15.7      46    -53    284     .37

       COD  |   4 |   -1.1    1.5   -1.1     -36      7      3     .12
       EMR  |   4 |   -1.1    -.7   15.0       9      1      4     .23
       ESA  |   4 |    4.4    3.4   25.1      47   -130     26     .28
       GFZ  |   4 |    -.8     .9    -.3     -25    -46     10    -.11
       GRG  |   4 |    4.3   -1.1   24.4     -27     -7     15     .46
       JPL  |   4 |    3.6    4.4   23.1     -45      9     43     .49
       MIT  |   4 |    5.7   -1.7   22.2      -6     -2    -23     .15
       NGS  |   4 |     .1   -4.1   25.2    -165    -54     -6     .80
       SIO  |   4 |    -.8    4.5   18.8      80      9    268     .20

       COD  |   5 |    -.4    1.2    -.9     -37    -14    -17     .20
       EMR  |   5 |   -4.3   -3.2   14.9       4      6    -10     .44
       ESA  |   5 |    1.9   -3.9   22.8     -39    -71    -32     .19
       GFZ  |   5 |    -.4     .9    -.4     -21    -57      4    -.06
       GRG  |   5 |    5.5   -2.0   25.6      -5     -9      5     .45
       JPL  |   5 |     .0     .3   16.3     -70     21    -11     .53
       MIT  |   5 |    1.9   -6.2   25.9      -6     -7    -18     .11
       NGS  |   5 |    6.4   -3.4   28.3    -168   -111     39     .68
       SIO  |   5 |     .8    -.8   33.2     -36     33    161     .39

       COD  |   6 |    -.6    1.6    -.7     -43    -10    -25     .22
       EMR  |   6 |   -8.6    -.2   17.2      12      5      3     .08
       ESA  |   6 |    1.7    -.8   26.3      66    -48     -9     .10
       GFZ  |   6 |    -.5     .6     .0     -23    -59      5    -.23
       GRG  |   6 |   -2.0    4.2   25.7     -22     -3    -24     .48
       JPL  |   6 |    -.1    4.0   20.8     -94     14     -6     .32
       MIT  |   6 |   -4.2   -1.6   23.8       2      1    -37     .16
       NGS  |   6 |   -1.6   -3.3   20.9    -153     -1    -15     .86
       SIO  |   6 |   -3.3     .9   31.0      16    112    214     .20


 8. 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.

 9. 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 1.1737.a). It also displays the computed satellite
position sigmas for the combined orbits (Table 1.1737.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 2.1737.[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 3.1737.[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 5.1737.0-6). 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 1737 summary.                       (Apr 21, 2013 - Apr 27, 2013)

Table 1.1737.a   GPS week: 1737   MJD: 56403.000-56409.000

         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  264|    0     0    -3    27    -6    21  -.39   13   12 |   -1099    -693     23     90
        |    1     0     1    15    28    10   .03           |     614     548
emr   79|   -1     0     0   -23    -3    22   .28   14   14 |    3719     -85     12     93
        |    1     1     1    15    20    11   .05           |     938    1239
esa  150|    0     0     0    12   -14     5   .07    6    6 |    -868     -17     23    112
        |    1     0     2    38    35    20   .01           |     630    1161
gfz  190|    0     0    -3   -53   -54     6  -.38   11   10 |     197    -364     21    139
        |    0     0     0    48    39    17   .03           |     502     647
grg  131|    1     1    10    -8     3   -18   .63   15   14 |     -21    -168     18    142
        |    0     0     1    14    15    16   .03           |     210     272
igr  n/a|    0     0    -3    18    58   -17  -.14    5    4 |    5285      61     19     86
        |    0     0     0    15    18    17   .04           |    1067    1222
jpl   80|    0     0    -7    -4    30    -7   .30   15   14 |    3351    -103     17    107
        |    0     1     0    33    30    11   .02           |     909    1104
mit  237|    0    -1     2    24    19     7  -.56   11   10 |    -713     115     22    200
        |    1     0     0    29    27    16   .04           |     938     767
ngs  240|    0     0     2    15    48   -39   .34   12   10 |    -461    -912   1866   3450
        |    1     0     3    42    78    27   .06           |     428     936
sio  306|    0     1   -11   -17   -35   219  -.48   19   18 |     ---     ---    ---    ---
        |    2     1     1    47    96    72   .02           |     ---     ---


Table 1.1737.b   GPS week : 1737   MJD: 56403.000-56409.000   

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



Table 2: Daily transformation of each centre to the combined IGS orbit and
         clocks for each day of the week. The transformation displayed is the
         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 2.1737.0   GPS week: 1737   Day: 0   MJD: 56403.000                            

CENT STA|   DX    DY    DZ    RX    RY    RZ   SCL  RMS  WRMS|    TOFT   TDRFT   SDEV    RMS
        |  [mm]  [mm]  [mm] [uas] [uas] [uas] [ppb] [mm] [mm]|    [ps]  [ps/d]   [ps]   [ps]
--------+----------------------------------------------------+------------------------------
cod  262|    0     0     0     8   -53    24  -.42   14   14 |    -914    -181     27     93
emr   80|    0    -2    -1   -36   -36    20   .21   14   14 |    3461     237      8     82
esa  150|    0     0     2    13   -20    12   .06    7    6 |   -1007     598     42    133
gfz  195|    0     0    -3   -59     8    19  -.38   10   10 |    -504     395     18     83
grg  133|    2     1     7   -22   -15   -27   .58   14   13 |    -127     -54     18    138
igr  n/a|    0     0    -4    21    38   -16  -.16    4    4 |    4099     541     17     83
jpl   80|   -1     2    -7   -19    10   -12   .28   14   14 |    2923     132     16     98
mit  237|    0     0     1    34    49    24  -.60   13   10 |      19       4     25    176
ngs  243|    0    -1    -2    93    61   -60   .27   12   10 |    -912    -277   1601   3152
sio  296|    0     0   -13   -48  -169    96  -.49   19   20 |     ---     ---    ---    ---

Table 2.1737.1   GPS week: 1737   Day: 1   MJD: 56404.000                            

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     0    -2    23    22    -1  -.39   11   11 |   -1417     -93     23     84
emr   80|    0    -2    -1   -14     2    28   .22   14   14 |    3720    1725     10     83
esa  150|    0     1     3    24    24    18   .07    6    5 |   -1403     769     46    129
gfz  186|    0     0    -4   -87   -54    14  -.39   10    9 |     383    -126     20     87
grg  134|    0     1    10   -23    -2   -41   .60   14   14 |      30    -124     21    144
igr  n/a|    0     0    -3    36    79   -22  -.13    4    4 |    4671    1822     18     90
jpl   80|    0    -1    -8    -9    57   -14   .32   14   14 |    3002    1553     16     88
mit  236|    2    -1     1    33     3    27  -.61   15   11 |   -1278     868     26    190
ngs  236|    0     0    -1    36   -64   -50   .28   10    9 |    -314    -888   1763   3222
sio  319|    2     2   -11   -84  -132   254  -.48   19   18 |     ---     ---    ---    ---

Table 2.1737.2   GPS week: 1737   Day: 2   MJD: 56405.000                            

CENT STA|   DX    DY    DZ    RX    RY    RZ   SCL  RMS  WRMS|    TOFT   TDRFT   SDEV    RMS
        |  [mm]  [mm]  [mm] [uas] [uas] [uas] [ppb] [mm] [mm]|    [ps]  [ps/d]   [ps]   [ps]
--------+----------------------------------------------------+------------------------------
cod  265|   -1     0    -6    22   -22    20  -.43   14   13 |    -477   -1559     20     89
emr   77|   -1    -1     2     0   -17    31   .24   15   15 |    4967     673     11     88
esa  150|    0     0     0     1    -6   -30   .06    6    5 |      67    -823     13    104
gfz  192|    0     0    -3     1   -54    31  -.41   10   10 |     763    -269     19    111
grg  131|    1     1    10    -1    -9   -32   .62   14   13 |     245     116     14    141
igr  n/a|    0     0    -2    41    31   -26  -.21    5    4 |    6581     815     17     93
jpl   80|    0     2    -6     0    26   -21   .33   15   14 |    4625     555     16    112
mit  237|    1    -1     2    23    38    20  -.59   12   11 |      32    -719     21    217
ngs  240|    0     0     0   -39    35    17   .35   12   11 |    -515    -804   2144   4377
sio  316|    0     0   -10    -1   -52   300  -.48   19   22 |     ---     ---    ---    ---

Table 2.1737.3   GPS week: 1737   Day: 3   MJD: 56406.000                            

CENT STA|   DX    DY    DZ    RX    RY    RZ   SCL  RMS  WRMS|    TOFT   TDRFT   SDEV    RMS
        |  [mm]  [mm]  [mm] [uas] [uas] [uas] [ppb] [mm] [mm]|    [ps]  [ps/d]   [ps]   [ps]
--------+----------------------------------------------------+------------------------------
cod  265|    0    -1    -2    24     3    25  -.37   12   12 |   -2207   -1146     27     91
emr   80|    0    -1     0   -47    -4    21   .31   15   15 |    4881   -1740     14     90
esa  150|    0     0     0     5   -27    25   .09    7    6 |    -547    -217     19    112
gfz  194|   -1     0    -2   -71   -95   -17  -.36   10    9 |     888   -1652     23    286
grg  132|    1     1     9   -20    27   -10   .62   14   13 |      38    -382     20    151
igr  n/a|    0     0    -3    16    70   -39  -.11    4    4 |    6751   -1543     20     87
jpl   80|    0     1    -7    64   -19    10   .33   16   15 |    4547   -1683     22    125
mit  238|    0     0     1    35     6    -5  -.55   10   10 |   -2507    1422     22    180
ngs  243|    0     0     0    15   146   -56   .41   12   10 |     406   -2950   2077   3671
sio  312|    0     1    -9    27   -47   272  -.47   18   18 |     ---     ---    ---    ---

Table 2.1737.4   GPS week: 1737   Day: 4   MJD: 56407.000                            

CENT STA|   DX    DY    DZ    RX    RY    RZ   SCL  RMS  WRMS|    TOFT   TDRFT   SDEV    RMS
        |  [mm]  [mm]  [mm] [uas] [uas] [uas] [ppb] [mm] [mm]|    [ps]  [ps/d]   [ps]   [ps]
--------+----------------------------------------------------+------------------------------
cod  262|    0     0    -2    15   -26    21  -.36   12   11 |    -577    -679     22     92
emr   80|   -1     1    -1   -25    11     1   .33   15   15 |    3621   -1421     19    120
esa  150|    1     0     0    45   -84    23   .07    6    6 |    -587   -1428     14    113
gfz  186|   -1     0    -3   -64   -30   -10  -.32   11   10 |    -128    -422     22    123
grg  131|    1     1     9    -5     1   -19   .64   15   14 |    -314     -76     16    151
igr  n/a|    0     0    -4    14    58   -28  -.09    5    5 |    5670   -1191     23     87
jpl   80|    0    -1    -6    -4    34    -5   .29   15   15 |    3393   -1116     17    109
mit  238|    0     0     2     1    51   -13  -.52   10    9 |       1    -554     20    222
ngs  239|   -2     0     6   -11   149   -33   .42   12   10 |    -781    -196   1912   2802
sio  301|   -1     1   -11    53    36   242  -.44   18   18 |     ---     ---    ---    ---

Table 2.1737.5   GPS week: 1737   Day: 5   MJD: 56408.000                            

CENT STA|   DX    DY    DZ    RX    RY    RZ   SCL  RMS  WRMS|    TOFT   TDRFT   SDEV    RMS
        |  [mm]  [mm]  [mm] [uas] [uas] [uas] [ppb] [mm] [mm]|    [ps]  [ps/d]   [ps]   [ps]
--------+----------------------------------------------------+------------------------------
cod  264|    1     0    -4    47    17    30  -.38   11   11 |   -1398    -273     21     83
emr   80|   -1     0    -1   -28    29    35   .33   14   14 |    3003    -646     15     99
esa  150|    1     0    -2   -61    12   -12   .09    7    7 |    -733    -909     15    103
gfz  187|    0     0    -2    21  -111     4  -.39   11   11 |     -32    -543     22    103
grg  132|    1     0    10    15    22     4   .68   16   15 |     203    -678     22    147
igr  n/a|    0     0    -2     0    74     4  -.15    5    4 |    4903    -684     20     77
jpl   80|    0     1    -7   -39    75   -15   .28   15   14 |    2711    -615     18    108
mit  238|    0    -1     2    66   -19    -4  -.52   10    9 |    -892    -168     21    209
ngs  237|    0     0     7    -3    -1   -31   .36   11   10 |    -535    -512   1930   3353
sio  295|   -3     3   -10   -21     7   144  -.47   19   16 |     ---     ---    ---    ---

Table 2.1737.6   GPS week: 1737   Day: 6   MJD: 56409.000                            

CENT STA|   DX    DY    DZ    RX    RY    RZ   SCL  RMS  WRMS|    TOFT   TDRFT   SDEV    RMS
        |  [mm]  [mm]  [mm] [uas] [uas] [uas] [ppb] [mm] [mm]|    [ps]  [ps/d]   [ps]   [ps]
--------+----------------------------------------------------+------------------------------
cod  261|    1     0    -3    49    15    30  -.38   14   13 |    -705    -924     24    100
emr   77|   -3     0    -1   -14    -6    16   .29   14   14 |    2380     572     13     91
esa  150|    2     0     0    55     0     2   .06    7    7 |   -1870    1885     15     91
gfz  194|    1     0    -3  -117   -46     5  -.42   13   12 |      12      63     23    185
grg  129|    2     2    12    -1    -1     0   .66   16   14 |    -225      22     18    126
igr  n/a|    0     0    -3     1    53     9  -.15    5    5 |    4322     669     19     91
jpl   80|    1    -1    -7   -19    25     4   .30   15   15 |    2257     453     16    109
mit  237|   -1    -1     2   -25     4     5  -.54   11   10 |    -372     -48     25    211
ngs  245|   -2     0     4    18    10   -62   .31   12   10 |    -581    -762   1637   3575
sio  304|   -4     2   -10   -49   110   222  -.49   20   17 |     ---     ---    ---    ---

       
       
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 3.1737.0   GPS week: 1737   Day: 0   MJD: 56403.000                            

        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    5   10    9    3   15    8   16   15    4 |    19   20   15   16   26   14   29   19   20   20    16
   2  |   15   15    9   11   11    3   17    7   10   33    4 |    29   33   33   35   33   29   30   32   33   42    30
   3  |    9    7    3   12   11    3    9    9   10   13    3 |    16   21   20   21   25   15   18   15   23   13    18
   4  |   15   10    6    7    9    4    9   15    7   19    3 |    28   35   36   31   39   32   34   36   38   28    34
   5E |   17   14    5    6   12    6   15    9   11   10    4 |    68   59   63   66   58   65   62   69   63   61    62
   6  |   10    6    4   13    9    4    8   11   11   16    3 |    17   25   23   25   30   20   22   23   25   13    22
   7  |   14   11    8   13   16    3   14   18   13   15    5 |    18   24   18   22   32   18   23   22   24   28    19
   8  |    9    9    6    5    7    3   12   10    9   16    3 |    13   21   14   10   16   13   23   14   21   20    14
   9  |    9    9    4    7   14    4   11   11   10   12    3 |    16   21   16   14   20   15   22   18   25   17    15
  10E |   14   17    7   12   11    4   14   20   12   20    5 |    46   38   40   45   34   42   38   41   38   39    38
  11  |   10   14    5    8   10    3   12    8   11   18    3 |    54   63   61   59   68   58   62   58   57   52    59
  12  |   17   23    7    9   21    5   24   12    9   13    5 |    20   26   15   16   26   13   26   20   23   18    15
  13  |   11   15    8    9   15    4   14   19    9   22    4 |    20   29   27   29   36   23   30   30   27   36    25
  14  |   10   14    4   12   13    5   12    8   12   22    4 |    28   29   28   36   35   30   30   29   32   31    29
  15  |   32   17    6   10   17    4   18   14    8   25    5 |    28   28   20   18   31   18   26   22   27   23    19
  16  |   10   15    6   11   14    3   16   12   10   15    4 |    16   19   15   13   25   12   23   14   22   16    14
  17  |   20   23    9   11   12    4   19   12   11   21    5 |    35   29   34   34   32   28   26   34   31   24    29
  18E |    8   10    4   13   19    4   13   11   11   20    4 |    39   34   35   39   35   36   35   42   40   34    35
  19  |    9   12    7   11    9    3   13    6   12   23    3 |    20   26   25   23   26   21   23   21   25   16    22
  20E |   10   15    5    7   11    4   15   14    9   13    4 |    21   20   17   20   20   16   15   22   19   21    16
  21  |   11   13    5   11   13    5   17   12   11   30    4 |    28   32   32   34   41   32   32   36   36   43    31
  22E |    8   13    5   11   12    5   12   11    9   19    3 |    30   27   26   29   25   25   25   31   30   25    25
  23  |   13   14    8   10   12    3   13   19   10   25    4 |    18   25   23   24   27   19   25   23   24   30    20
  24  |   13   11    6   11   13    4   11   10   11   15    4 |    18   20   13   14   24   10   22   13   19   15    13
  25  |   11   19    5   11   12    4   11   10   11   13    4 |    22   35   29   25   39   26   34   28   30   27    27
  26  |   10    9    5    7    8    2    8    5    6   10    2 |    23   21   22   25   25   21   24   23   25   26    22
 X27  |    7  ---  ---  ---  ---   86  ---  ---  ---  ---    0 |    42  ---  ---  ---  ---   31  ---  ---  ---  ---    40
  28  |    9   14    6    7   16    3   16    6   12    8    4 |    16   20   14   14   30   12   23   13   22   14    14
  29  |   19   15    6   11   15    4   20    9    9   25    4 |    29   34   33   31   35   29   33   34   38   30    31
  30E |   17   17   14   13   23   11   15   20   25  ---    6 |    37   33   25   30   37   29   20   36   55  ---    30
  31  |   11   13    7    8   18    5   11    7   15   16    4 |    21   24   18   22   37   19   25   18   27   20    20
  32E |   16   13    8   11   13    6   15   28   15   22    5 |    90   97   95   86   98   93  100  108  101  103    96
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |   14   14    7   10   14    4   14   13   12   19      |T   28   31   28   29   34   27   30   30   32   29    28
 WRMS |   14   14    6   10   13    4   14   10   10   20      |NE  23   27   24   25   31   22   27   24   28   25    23
 MEDI |   11   14    6   11   12    4   14   11   11   16      |MD  22   27   25   25   32   21   26   23   27   25    22

Table 3.1737.1   GPS week: 1737   Day: 1   MJD: 56404.000                            

        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    8    5    8    9    3   15   13   11   15    3 |    12   16   16   12   23   13   26   15   16   13    13
   2  |   10   16    8   12   12    4   18    8    7   34    4 |    22   22   24   26   22   21   25   20   18   34    19
   3  |   12    8    2   14   13    2    9    9   10   13    3 |    13   13   15   14   19   11   15   12   19    9    12
   4  |    9    8    5    7   10    3   10   13    9   20    3 |    22   26   27   22   28   23   27   22   25   18    24
   5E |    9   14    5    8   17    5   16   11   10   10    4 |    46   46   48   51   47   48   46   48   41   49    46
   6  |   11    8    3   14   13    3    8   10   12   18    3 |    15   21   21   19   27   17   21   16   25   11    18
   7  |   13   13    6   13   15    4   12   21   11   18    4 |    21   20   20   20   30   18   23   19   25   24    18
   8  |    9   10    5    8   10    4   13   16   11   16    3 |    15   16   15   13   17   15   23   13   21   16    13
   9  |    6   10    4    7   15    4   11   10    6   10    3 |    15   17   15   14   22   15   22   18   21   17    14
  10E |   11   15    6   12   14    6   16   26   13   20    5 |    30   24   29   32   28   28   26   33   23   30    25
  11  |   12   13    6    9   14    4   13   10   10   20    4 |    34   40   40   38   50   37   40   34   38   32    38
  12  |   12   20    7    8   19    4   23   10    9   13    5 |    14   24   15   13   25   14   25   15   21   13    13
  13  |   12   15    6   11   17    4   14   21    8   21    4 |    17   27   22   23   34   21   28   22   24   27    20
  14  |    7   15    4   10   13    5   13   10    9   22    3 |    18   24   22   24   30   22   27   22   30   23    22
  15  |   20   17    6   10   17    7   15   13   12   19    5 |    24   25   17   16   30   17   23   18   24   20    16
  16  |    9   13    6   11   14    4   19   10   14   17    4 |    18   21   17   15   26   15   24   15   20   17    15
  17  |   12   17    8   13    9    4   16   13   11   20    4 |    19   22   20   22   21   17   21   21   20   14    15
  18E |    9   13    5    9   18    5   14   10    7   17    3 |    27   26   26   28   30   24   25   31   25   26    26
  19  |   10   12    6    9   13    2   12    7   11   23    3 |    15   20   19   15   22   14   21   16   20   14    16
  20E |   11   17    7    8   15    6   16   24    8   13    5 |    19   20   17   16   17   15   17   27   18   21    14
  21  |   11   13    6   10   12    6   17   13    7   30    4 |    22   25   25   23   31   23   24   26   22   35    21
  22E |    8   12    6   11   13    5   13   13    9   15    4 |    18   19   17   18   19   17   18   23   18   17    16
  23  |   12   13    6   11   14    7   14   19   10   23    4 |    15   23   20   23   25   17   24   16   26   22    18
  24  |   12   11    5    7   15    4   11   10    8   12    3 |    11   18   13    9   28   10   22   11   18   12    11
  25  |   10   18    5   11   14    4   11    8   10   11    4 |    20   31   23   22   30   20   29   18   25   20    22
  26  |    8   10    6    6    9    4    9    7   13   14    3 |    16   20   17   17   21   17   20   16   26   16    16
 X27  |    6  ---  ---  ---  ---   36  ---  ---  ---  ---    0 |    38  ---  ---  ---  ---   32  ---  ---  ---  ---    37
  28  |    7   14    5    8   17    3   13    8    7   10    3 |    13   18   13   12   30   13   21   13   21   13    13
  29  |   10   14    6    9   14    4   18   11   10   24    4 |    20   25   24   19   24   20   27   22   25   19    20
 X30E |   14   20    9   13   23   11  ---   19   20  ---    6 |    28   36   34   30   35   30  ---   24   38  ---    30
  31  |    9   10    5    6   18    4   12    8   12   17    3 |    15   25   19   20   36   18   27   17   27   17    19
  32E |   19   16    8   11   17    6   20   36   18   21    6 |   101  109  107   99  110  105  111  114  106  110   106
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |   11   13    6   10   14    4   14   15   10   19      |T   22   26   24   23   30   22   27   23   26   23    22
 WRMS |   11   13    5    9   14    4   14   11    9   18      |NE  17   22   20   18   27   17   24   18   23   19    17
 MEDI |   10   13    6   10   14    4   13   11   10   17      |MD  18   23   20   20   28   17   24   19   24   18    18

Table 3.1737.2   GPS week: 1737   Day: 2   MJD: 56405.000                            

        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    9    4    6   13    5   14    8   16   16    3 |    11   15   13   10   21   10   24   11   19   11    11
   2  |   14   15    8   11   10    5   18    7    7   35    4 |    25   28   25   29   27   25   27   26   22   37    23
   3  |   10    6    2   10   13    3    9    9   11   16    3 |     9   13   13   15   19    9   13   11   16   11    11
   4  |    8    9    6    8    9    3   10   10   12   20    3 |    24   32   33   30   38   29   33   30   30   22    30
   5E |   13   15    6   13   16    3   17   21   10   23    5 |    72   65   67   68   63   68   65   72   64   69    67
   6  |   10    6    3   11    8    4    8    9   12   18    3 |    14   21   19   17   26   16   20   17   23   11    17
   7  |   20   14    7   12   16    3   12   20   16   18    5 |    28   22   17   19   29   16   23   17   24   24    17
   8  |   12   11    5   11   10    4   11   13   12   15    4 |    20   20   16   14   19   13   22   13   23   17    14
   9  |   10    9    4   10   11    4   13    9    8   13    3 |    16   17   16   14   17   14   20   16   22   17    14
  10E |   15   19    7   13   15    7   16   17   19   18    5 |    41   33   32   36   29   35   28   32   33   31    31
  11  |   11   12    4    7   17    5   11    9   13   19    3 |    36   50   45   45   57   44   48   43   43   40    44
  12  |   14   24    6   10   19    6   26   10   11   11    5 |    15   26   15   17   27   13   28   15   20   14    14
  13  |   12   15    6   12   16    4   13   15   12   20    4 |    21   24   21   23   31   17   27   22   18   26    19
  14  |   12   17    6   14   11    6   15    8   11   21    4 |    30   23   26   29   31   24   28   23   27   21    25
  15  |   22   17    5    9   15    6   20   11   14   15    5 |    25   25   19   17   30   17   25   18   26   19    18
  16  |   17   12    7   11   12    3   16   10    8   18    4 |    24   19   15   13   28   13   20   14   23   18    15
  17  |   10   19    6   12    9    6   15    9   11   20    4 |    20   27   23   27   28   23   25   27   22   17    21
  18E |   12   14    6    8   18    4   17   10   10   21    4 |    35   30   31   32   31   31   34   39   32   38    31
  19  |    9   11    5   11   11    3   13    8    9   23    3 |    14   20   18   17   21   14   20   14   18   10    15
  20E |   11   17    5    6   17    5   13    9   10   16    4 |    18   17   12   17   18   13   17   17   18   18    12
  21  |   11   14    6   10   15    4   19   13   12   29    4 |    23   27   26   27   35   24   29   29   30   37    25
  22E |   11   15    6    9   11    4   14   12   12   17    4 |    29   25   25   23   23   23   24   29   24   27    23
  23  |   14   13    5   13   11    5   12   13   12   19    4 |    18   21   18   21   24   15   23   15   21   20    16
  24  |   13   14    4    9   12    7   13   10   10   10    3 |    19   22   15   12   25   15   24   15   20   15    14
  25  |   10   21    6   11   20    3   12   10    9   10    4 |    29   37   29   27   42   29   35   30   34   28    29
  26  |   11    9    5    7    9    3   11    9    7   16    3 |    17   21   20   19   23   16   22   19   24   21    18
 X27  |    8  ---  ---  ---  ---   91  ---  ---  ---  ---    0 |    70  ---  ---  ---  ---   19  ---  ---  ---  ---    70
  28  |   14   12    6    9   19    3   13    8   11   12    4 |    20   19   14   15   30   14   21   16   24   17    13
  29  |   11   17    7    9   14    5   19   14   11   22    4 |    22   27   24   22   28   21   25   25   28   24    22
 X30E |   29   19    6   15   23   14  ---   17   23  ---    7 |    42   32   29   32   32   30  ---   20   48  ---    28
  31  |   24   15    6   10   19    5   11    7   13   16    4 |    36   25   19   20   37   17   28   16   26   16    21
  32E |   22   15    5   10   17    7   16   17   17   24    5 |    71   79   73   70   79   72   79   77   76   78    74
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |   14   15    6   10   14    5   15   12   12   19      |T   27   27   24   25   31   23   28   24   28   25    25
 WRMS |   13   15    5   10   13    4   14   11   11   22      |NE  21   23   20   20   28   18   24   19   24   20    19
 MEDI |   12   14    6   10   14    4   13   10   11   18      |MD  23   25   20   21   28   17   25   19   24   20    19

Table 3.1737.3   GPS week: 1737   Day: 3   MJD: 56406.000                            

        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  |    8    8    5    6   10    4   13    7   12   16    3 |    18   20   18   18   23   15   24   17   19   14    15
   2  |   12   16    9   11   10    4   21    8   11   35    4 |    22   30   28   34   28   27   27   29   36   39    26
   3  |    6    9    4   13   11    2    8    8   16   14    3 |    12   18   14   18   24   14   14   14   29   13    14
   4  |    9   10    6    8    9    5   10    7   11   17    3 |    28   33   35   33   35   32   32   34   41   29    33
   5E |    8   16    5   11   11    3   18    8    9    8    4 |    45   37   39   41   36   40   39   45   43   42    39
   6  |    8    8    4   12   10    2    8    7   14   15    3 |    20   26   21   25   30   21   22   21   29   12    21
   7  |   11   15   10   12   17    3   15   14   12   16    5 |    28   25   21   23   31   20   23   20   28   26    20
   8  |    6   13    7    7    8    2   14   10    9   16    3 |    21   23   18   18   18   17   22   17   24   19    16
   9  |    7   10    7    6   13    6   15    8   11   12    3 |    19   21   22   19   26   20   24   19   23   19    18
  10E |   15   18    9   11   14    7   21   16   23   17    6 |    42   34   34   40   33   36   34   35   41   31    33
  11  |   13   12    5    8   11    4   11    7   13   20    3 |    52   58   54   54   63   52   55   52   51   47    53
  12  |   12   27    7    9   20    5   31   11   12   12    6 |    16   26   16   16   27   14   28   13   26   12    13
  13  |   11   16    9   13   19    3   13   12   13   15    4 |    21   25   24   27   35   20   26   22   25   25    21
  14  |    9   15    6   10   13    5   15    6   10   19    3 |    20   24   26   29   30   24   26   23   27   20    23
  15  |   34   19    9    9   17    8   23    9   10   15    6 |    29   27   22   20   31   21   27   18   31   19    19
  16  |    6   13    6   13   13    4   15    8   13   16    4 |    14   18   19   16   24   15   22   12   28   17    15
  17  |    9   18    7   10    9    4   18    8    8   22    4 |    22   28   27   29   28   23   24   29   29   22    24
  18E |    6   13    6   10   12    4   14   10   12   17    4 |    28   24   28   28   27   26   23   29   30   28    25
  19  |    7   11    7   11   12    3   12    7   13   23    3 |    19   25   22   22   28   19   21   20   24   17    20
  20E |   12   14    9    9   15    5   15   10   16   15    4 |    23   17   18   18   17   16   16   19   22   22    15
  21  |   10   15    7   13   11    4   17   10   16   30    4 |    32   30   31   35   38   29   27   32   29   39    29
  22E |    6   11    7    9   16    3   14    8   12   14    3 |    21   19   22   22   21   19   18   23   26   24    18
  23  |   11   15    7   15   16    4   12    8   12   16    4 |    15   22   19   25   27   17   22   15   24   19    16
  24  |   14   13    6    7   18    5   14   11   12    9    4 |    18   21   15   12   28   15   23   14   25   11    14
  25  |   10   20    7   10   16    5   11   12    8   14    4 |    60   66   63   58   64   61   62   63   67   63    61
  26  |   10   10    6    9    7    3   11    6    6   12    3 |    17   18   18   19   21   17   19   15   26   17    17
 X27  |    6  ---  ---  ---  ---   40  ---  ---  ---  ---    0 |    40  ---  ---  ---  ---   31  ---  ---  ---  ---    38
  28  |    7   12    8    9   17    6   14    7    9   13    4 |    19   23   19   18   29   19   22   20   28   20    18
  29  |   14   16    7   10   11    4   20   12    8   22    4 |    31   29   25   27   33   26   28   26   34   27    26
 X30E |   18   18    6   16   15   11  ---   14   29  ---    6 |    24   27   24   29   30   24  ---   21   41  ---    22
  31  |    7   15    7    8   19    5   13    7   13   16    4 |    15   24   21   22   38   20   25   17   28   16    20
  32E |   17   17    7   13   17    5   14   16   14   25    5 |    79   87   82   76   87   80   90   88   89   90    83
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |   12   15    7   10   14    4   16   10   12   18      |T   27   29   27   28   32   25   28   26   33   26    25
 WRMS |   12   15    6    9   13    4   15   10   10   18      |NE  22   25   23   24   30   21   25   22   29   22    21
 MEDI |    9   15    7   10   13    4   14    8   12   16      |MD  21   25   22   25   29   20   24   21   28   20    20

Table 3.1737.4   GPS week: 1737   Day: 4   MJD: 56407.000                            

        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  |    8    6    5    8    9    4   12    8   14   19    3 |    16   19   16   15   25   12   26   14   18   16    14
   2  |   13   17    6   11   12    4   19   10   10   35    4 |    31   26   27   30   31   25   27   29   33   38    27
   3  |   10    7    4   11   12    4    9    7   10   15    3 |    14   14   14   12   21   12   13   14   21   13    13
   4  |   10    9    4    8   12    5   10    9   10   16    3 |    30   31   33   29   38   28   30   34   33   27    31
   5E |   10   16    4   11   13    4   20    9   11   12    4 |    55   46   47   51   46   47   46   51   47   43    48
   6  |    7    6    4    8    8    3    8    4   10   19    2 |    16   20   20   17   24   17   20   17   25   10    18
   7  |    8   13    9   13   18    4   13    8   16   14    4 |    18   22   17   22   32   17   21   13   26   21    16
   8  |   10   14    5    9   11    5   11    7   11   14    3 |    19   23   16   18   19   15   22   15   24   16    15
   9  |   10   10    4    7   15    5   12    6    6   12    3 |    18   19   17   16   18   15   21   15   21   17    15
  10E |   23   16    6   14   17    7   21   16   18   21    6 |    52   37   40   43   31   42   37   37   42   36    39
  11  |   10   11    5    9   14    3   11    7   11   20    3 |    42   51   47   47   58   46   50   46   44   42    46
  12  |   14   29    7   12   17    4   29   10    8   14    6 |    20   31   17   16   28   15   30   15   24   18    16
  13  |   10   14    8   11   19    4   16   13   13   15    4 |    15   26   20   24   34   18   26   20   21   23    18
  14  |   11   15    5    8   11    4   15    5   11   19    3 |    25   26   24   22   32   23   25   20   27   20    22
  15  |   26   19    5   11   14    7   22    9   12   14    5 |    28   27   20   18   29   20   27   17   31   19    19
  16  |    7   14    4    9   14    5   15    8    8   15    3 |    16   20   17   12   25   15   21   10   22   14    14
  17  |   17   18    8    9   12    5   18    8   12   22    4 |    31   27   26   26   29   22   29   28   25   19    24
  18E |    9   13    6   10   22    5   14    9    9   18    4 |    25   20   22   25   28   21   22   26   28   22    21
  19  |    9   10    5   10   13    3   12    6   11   24    3 |    17   21   20   18   24   17   21   18   26   16    18
  20E |   12   15    7   12   19    5   13   10   14   12    4 |    22   21   16   20   24   14   20   22   18   21    17
  21  |   10   16    5   11    9    5   17    9   11   29    4 |    27   29   30   34   36   26   28   29   40   39    29
  22E |    7   12    4   10   15    5   12    7   10   16    3 |    20   17   16   20   22   15   18   19   24   18    16
  23  |   11   13    8   13   19    4   15   14   14   18    4 |    16   23   20   23   28   15   21   15   19   19    16
  24  |   14   13    3   10   17    7   12    7    8   11    3 |    17   18   14   12   25   11   21   12   23   11    12
  25E |   11   20    8   11   17    5   14   16   10   14    5 |    31   37   35   26   38   30   36   37   36   37    32
  26  |   11   10    4    9   10    5   10    5    9    7    3 |    16   17   17   15   19   14   17   11   22   11    14
 X27  |    6  ---  ---  ---  ---   41  ---  ---  ---  ---    0 |    67  ---  ---  ---  ---   34  ---  ---  ---  ---    67
  28  |    9   12    6    8   20    3   12    7    9    9    3 |    14   20   12   14   31   10   19   13   21   14    13
  29  |   11   18    6   12   16    5   20   14    9   22    4 |    25   28   25   26   27   23   29   26   31   28    24
  30E |   15   20   10   12   23   12   15   14   31  ---    6 |    32   34   28   30   36   28   23   29   44  ---    28
  31  |   10   15    7    9   18    5   13    8   14   16    4 |    21   26   24   21   39   21   25   17   28   15    21
  32E |   18   16    7   15   13    6   18   18   13   27    5 |    67   75   72   65   77   69   78   80   76   82    72
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |   12   15    6   11   15    5   15   10   12   18      |T   26   27   24   24   31   23   27   24   29   24    24
 WRMS |   11   15    6   10   14    5   15    9   10   18      |NE  21   24   21   21   29   19   24   19   26   20    19
 MEDI |   10   14    5   10   14    5   14    8   11   16      |MD  21   26   20   22   29   18   25   19   26   19    18

Table 3.1737.5   GPS week: 1737   Day: 5   MJD: 56408.000                            

        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    7    6   12   11    5   13    9   17   16    4 |    13   17   14   18   21   12   22   16   19   15    11
   2  |   13   17    9   10   17    5   19   12   12   36    5 |    24   27   23   25   28   23   26   22   27   39    21
   3  |   10    7    6   10   13    3   10    6    9   16    3 |    13   16   16   11   19   13   16   12   22   12    12
   4  |   15   10    6   10   14    5    9   10    6   17    3 |    21   29   29   26   34   26   26   29   35   23    27
   5E |    9   15    6    9   17    4   18   12   13    7    4 |    36   38   35   39   31   37   39   35   31   36    35
   6  |    9    7    6    9   11    4    9    6    9   18    3 |    18   23   20   17   27   19   22   18   27   12    19
   7  |    9   10    7   11   17    3   12    6   14   13    4 |    16   23   18   18   33   16   21   14   21   19    16
   8  |    9   13    6    8   10    3   15    8    8   16    3 |    12   24   19   14   17   15   24   13   21   15    15
   9  |    8   10    5    6   12    5   13    9   10   13    3 |    15   21   19   15   21   17   22   14   21   15    16
  10E |   19   18    9   12   19    6   18   15   24   17    6 |    44   36   37   42   33   38   35   36   38   36    35
  11  |   14   12    6   13   15    3   10    7   10   21    4 |    33   45   37   43   50   38   44   38   42   35    38
  12  |   16   25   10   11   18    4   28   10   10   14    6 |    20   30   21   17   30   21   31   21   27   22    18
  13  |   13   14    7   11   17    3   14    8   12   16    4 |    16   27   22   22   34   19   26   20   18   22    19
  14  |    7   15    8   15   14    5   15    6   10   20    4 |    19   26   24   23   31   23   27   19   29   18    21
  15  |   13   21    7   13   16    6   21    9   12   15    5 |    20   27   22   15   29   21   24   14   29   15    18
  16  |    8   14    6   11   15    6   15    7   11   14    4 |    22   27   26   16   30   21   28   16   26   18    21
  17  |   12   19    8   12   11    5   15    9   11   24    4 |    22   24   18   23   24   18   23   20   26   12    17
  18E |    9   12    7   14   22    4   14   10    7   17    4 |    23   20   21   20   24   19   22   23   20   19    18
  19  |    8   11    5   11   12    4   12    7   11   24    3 |    15   21   20   16   22   16   21   16   25   13    16
  20E |   10   14    7   10   17    5   11    9   11   14    4 |    17   19   16   18   17   14   17   18   16   25    14
  21  |    9   16    8   12   13    6   19    9   12   30    4 |    23   28   27   29   30   27   28   28   31   42    24
  22E |    9   13    6   12   16    5   14    8    7   14    3 |    17   20   18   16   19   16   19   18   19   17    14
  23  |   11   13    5   12   14    5   12    8   11   20    4 |    11   22   17   16   26   14   19   15   19   20    14
  24  |   11   13    8    5   16    2   14   10    9   13    4 |    11   19   19   10   27   12   19   11   22   12    13
  25E |   15   17   10    9   17    5   14   10    9    9    4 |    28   32   28   25   30   28   32   26   37   24    26
  26  |   11   11    8    9   13    3    9   12   11    8    4 |    15   19   21   17   22   16   18   16   24   12    16
 X27E |    7  ---  ---  ---  ---   81  ---  ---  ---  ---    0 |    70  ---  ---  ---  ---   25  ---  ---  ---  ---    68
  28  |    9   10    6    9   18    3   12   11    8    8    3 |    16   17   14   17   27   15   19   20   26   14    13
  29  |   14   16    8   10   20    5   20   14    9   27    5 |    24   25   22   20   30   23   26   24   26   19    21
 X30E |   18   35   21   18   43   27  ---   16   30  ---   10 |    28   39   28   26   39   35  ---   23   43  ---    23
  31  |   10   13    9   12   20    5   15    6   14   17    4 |    21   29   22   20   39   22   27   18   27   17    21
  32E |   16   15    6   17   17    7   15   15   10   28    5 |    72   81   76   67   83   72   79   78   78   85    75
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |   11   14    7   11   16    5   15   10   11   19      |T   23   27   24   22   29   22   26   22   28   22    22
 WRMS |   11   14    7   11   15    4   14    9   10   16      |NE  18   24   21   19   28   19   24   18   25   19    18
 MEDI |   10   13    7   11   16    5   14    9   11   16      |MD  20   25   21   18   29   19   24   19   26   18    18

Table 3.1737.6   GPS week: 1737   Day: 6   MJD: 56409.000                            

        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    7    6   10   12    4   13   11    9   18    3 |    17   18   17   22   27   17   27   20   27   11    16
   2  |   14   19    8   11   12    5   20   12   14   37    5 |    32   32   35   36   37   33   30   35   46   45    33
   3  |    9    7    6   11   10    3   10    8    8   15    3 |    18   15   16   17   24   16   20   16   27   15    16
   4  |   12   10    6   11   12    6    9   10   10   20    3 |    35   37   41   37   46   37   39   43   50   35    40
   5E |   10   16    6   14   16    4   19   14   10    9    4 |    56   46   49   50   45   50   49   57   49   50    49
   6  |    9    8    6    9    8    4   11    8    9   21    3 |    24   23   24   24   32   24   28   24   34   16    24
   7  |   13   11    8   17   17    5   11    8   13   14    4 |    30   24   22   24   30   22   26   22   31   28    21
   8  |    8   13    4   12   10    3   12   10    9   14    3 |    26   24   21   20   21   22   27   25   29   23    21
   9  |    8   11    4   12   13    3   13   10    7   14    3 |    24   22   22   18   20   21   25   18   27   22    19
  10E |   22   18   11   13   15    5   16   18   22   24    6 |    53   40   44   49   37   45   41   51   52   54    44
  11  |   16   12    5   11   13    4   11    8   11   20    4 |    56   65   62   63   75   62   65   62   67   56    62
  12E |   20   25    7   14   27    6   27   11   12   14    6 |    34   33   26   28   39   21   33   17   30   25    25
  13  |   13   14    8   13   18    5   11   12   15   16    4 |    22   27   25   29   36   21   29   24   28   28    23
  14  |   11   15    6   12   12    4   15    7   14   20    4 |    28   26   27   27   33   25   27   23   28   23    24
  15  |   30   19    7   11   15    3   18   11   13   18    6 |    32   28   23   21   33   23   27   21   32   21    22
  16  |    9   14    7   13   18    7   17    8    8   16    4 |    20   21   22   12   29   18   27   13   27   18    17
  17  |   16   18    8   10    8    4   16    6    9   24    4 |    37   33   34   31   35   31   31   36   38   27    32
  18E |    7   13    8   13   19    3   13    8   10   19    4 |    30   24   26   28   29   25   27   28   30   26    24
  19  |    8   10    6   12   11    5   13   10    8   23    3 |    22   24   23   25   31   22   27   25   30   18    23
  20E |   12   15    7   13   15    7   13    8   12   14    4 |    24   19   19   24   18   17   20   22   23   24    17
  21  |    9   14    7   14   11    5   18    8    6   29    4 |    37   34   37   43   42   36   34   36   40   47    35
  22E |    8   12    6   12    9    4   16   10   10   13    4 |    25   20   20   22   21   19   24   23   28   20    19
  23  |   15   14    6   16   15    5   11   13   14   21    4 |    20   24   22   25   30   19   25   19   31   23    20
  24  |   12   14    7   11   21    3   14   10   13   17    4 |    22   22   17   10   24   15   24   17   22   14    15
  25E |   10   16    7   11   24    6   14   14   12   12    5 |    24   28   22   17   28   19   28   21   24   16    20
  26  |   12   12    7   11   12    4   13   14   10   14    4 |    22   17   22   23   22   19   21   16   24   12    18
 X27E |    7  ---  ---  ---  ---   44  ---  ---  ---  ---    0 |    56  ---  ---  ---  ---   36  ---  ---  ---  ---    55
  28  |   10    9    7   10   25    4   12   12    8   11    4 |    21   20   17   15   33   16   23   20   23   21    16
  29  |   14   17    9   13   16    4   21   16   13   30    5 |    31   34   33   33   38   30   35   33   33   31    30
 X30E |   15   23   16   18   22   17  ---   15   23  ---    7 |    38   38   42   39   33   35  ---   32   50  ---    36
  31  |   11   16    7   13   16    4   15    7   10   16    4 |    24   27   21   22   38   19   28   18   27   16    21
  32E |   19   17    8   20   19   10   18   14   13   30    5 |    69   79   73   69   82   70   79   71   79   81    73
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |   14   14    7   13   16    5   15   11   12   20      |T   31   29   29   29   34   27   31   28   35   28    28
 WRMS |   13   14    7   12   14    5   15   10   10   17      |NE  27   27   26   26   33   24   29   25   32   25    24
 MEDI |   12   14    7   12   15    4   13   10   10   17      |MD  26   26   23   25   33   22   27   23   30   23    23



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 4.1737   GPS week: 1737   MJD: 56403.0-56409.0

CENT| CLK EPO  |        BRUX       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3031 |U    6     7    14 |U    6    11    25 |U    7     7    16 |
emr | emr 2963 |     8     8    16 |U   10    17    36 |     8     8    20 |
esa | esa 2976 |     6     6    16 |U    7    12    26 |     7     6    17 |
gfz | gfz 2963 |U    6     6    16 |U    8    15    35 |U    7     6    16 |
grg | grg 2975 |U   10    10    28 |U   11    16    39 |    10    11    25 |
igr | igr 2966 |     6     7    15 |     7    12    26 |     7     7    16 |
igs | igs 2971 |     6     7    15 |     9    16    33 |     7     6    16 |
jpl | jpl 2897 |     8     7    19 |U   10    18    38 |    10     9    22 |
mit | mit 2976 |     6    10    19 |U   10    18    36 |U    8     7    19 |



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 5.1737.0   GPS week: 1737   Day: 0   MJD: 56403.0

CENT| CLK EPO  |        BRUX       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3022 |     5     5    15 |     5    13    22 |     6     7    16 |
emr | emr 2964 |     7     9    13 |     6    17    33 |     6     8    19 |
esa | esa 2976 |     6     6    12 |     4    13    23 |     5     6    17 |
gfz | gfz 2966 |     6     6    13 |     9    19    43 |     6     7    16 |
grg | grg 2976 |     8     6    19 |     9    15    38 |     7     9    27 |
igr | igr 2964 |     6     7    13 |     4    13    24 |     5     6    17 |
igs | igs 2976 |     7     6    13 |     6    17    31 |     5     5    16 |
jpl | jpl 2964 |     6     8    15 |     6    16    30 |     6     8    19 |
mit | mit 2976 |    11    26    43 |     8    19    41 |     5     4    19 |

Table 5.1737.1   GPS week: 1737   Day: 1   MJD: 56404.0

CENT| CLK EPO  |        BRUX       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3035 |     5     5    14 |     4    10    19 |     6     7    15 |
emr | emr 2964 |     7     7    16 |    10    21    32 |     7     9    21 |
esa | esa 2976 |     6     6    14 |     4     9    19 |     6     6    17 |
gfz | gfz 2964 |     5     5    13 |     6    16    32 |     7     6    18 |
grg | grg 2976 |    11    11    27 |    11    14    42 |     9    11    30 |
igr | igr 2976 |     7     7    15 |     4    10    23 |     7     8    19 |
igs | igs 2972 |     6     6    13 |     9    21    33 |     6     6    16 |
jpl | jpl 2872 |     7     6    21 |     7    18    25 |     8     9    21 |
mit | mit 2976 |     6     7    12 |    11    21    37 |     8     9    17 |

Table 5.1737.2   GPS week: 1737   Day: 2   MJD: 56405.0

CENT| CLK EPO  |        BRUX       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3030 |     6     7    15 |     6    11    17 |     7     8    16 |
emr | emr 2964 |     7     8    19 |    10    19    30 |     7     9    17 |
esa | esa 2976 |     6     7    17 |     5    11    22 |     7     7    17 |
gfz | gfz 2964 |     6     6    16 |     6    11    22 |     7     7    15 |
grg | grg 2976 |     7    11    22 |    12    17    37 |    13    11    26 |
igr | igr 2970 |     6     7    16 |     5    11    19 |     7     7    17 |
igs | igs 2968 |     6     7    16 |     8    19    31 |     7     7    17 |
jpl | jpl 2871 |     9     9    19 |     8    22    33 |     6     7    18 |
mit | mit 2976 |     7     7    18 |    11    22    40 |     8     7    17 |

Table 5.1737.3   GPS week: 1737   Day: 3   MJD: 56406.0

CENT| CLK EPO  |        BRUX       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3028 |     5     7    13 |     7    12    32 |     8     5    15 |
emr | emr 2964 |     6     7    12 |    11    22    43 |     9     7    19 |
esa | esa 2976 |     5     7    13 |    11    21    40 |     7     4    14 |
gfz | gfz 2964 |     5     6    12 |     9    21    31 |     7     5    12 |
grg | grg 2976 |     9     9    26 |    13    18    41 |    11    10    17 |
igr | igr 2965 |     5     7    12 |     9    21    37 |     7     5    13 |
igs | igs 2973 |     4     6    11 |    11    23    39 |     6     4    15 |
jpl | jpl 2870 |     7     7    17 |    11    27    42 |     7     5    17 |
mit | mit 2976 |     4     7     9 |    11    22    38 |     8     6    14 |

Table 5.1737.4   GPS week: 1737   Day: 4   MJD: 56407.0

CENT| CLK EPO  |        BRUX       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3031 |     6    10    14 |     6     7    27 |     7     6    13 |
emr | emr 2964 |     9     8    17 |    12    16    42 |     8     8    19 |
esa | esa 2976 |     7     7    19 |     7     8    33 |     7     5    15 |
gfz | gfz 2963 |     7     7    18 |     9    18    41 |     7     5    14 |
grg | grg 2976 |    13     9    34 |    10    14    34 |    11     9    23 |
igr | igr 2975 |     7     6    18 |     7     8    33 |     7     6    14 |
igs | igs 2973 |     7     7    18 |     7     7    30 |     7     5    14 |
jpl | jpl 2964 |     8     7    19 |    11    20    41 |    19    12    27 |
mit | mit 2976 |     7     8    19 |     8    11    27 |     9     7    20 |

Table 5.1737.5   GPS week: 1737   Day: 5   MJD: 56408.0

CENT| CLK EPO  |        BRUX       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3032 |     9     9    16 |     7    12    30 |     8     8    17 |
emr | emr 2963 |    10     8    20 |    12    13    44 |     9     9    21 |
esa | esa 2976 |     8     6    19 |     7    13    26 |     7     7    18 |
gfz | gfz 2962 |     7     7    22 |    10    13    39 |     7     7    18 |
grg | grg 2973 |    10    11    35 |     9    24    41 |    11     8    26 |
igr | igr 2971 |     8     7    21 |     8    13    29 |     8     7    18 |
igs | igs 2968 |     8     7    20 |    10    14    40 |     8     8    18 |
jpl | jpl 2871 |     9     7    29 |    14    16    76 |     9     9    21 |
mit | mit 2976 |     6     6    20 |    10    16    32 |     9     9    21 |

Table 5.1737.6   GPS week: 1737   Day: 6   MJD: 56409.0

CENT| CLK EPO  |        BRUX       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3041 |     6     8    12 |     9     9    25 |    10     7    18 |
emr | emr 2964 |     7     9    15 |    11    10    26 |    13     9    23 |
esa | esa 2976 |     6     6    15 |     9     8    22 |     9     7    18 |
gfz | gfz 2964 |     6     6    15 |    10    10    34 |     8     7    18 |
grg | grg 2976 |     8    10    30 |    12    13    39 |    11    16    28 |
igr | igr 2944 |     6     6    14 |     9     8    19 |     9     7    17 |
igs | igs 2967 |     6     7    15 |     9     9    24 |     9     6    19 |
jpl | jpl 2872 |     9     9    17 |    10     9    22 |    12    11    30 |
mit | mit 2976 |     5     7    13 |    11    14    37 |     9     8    27 |


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 6.1737   GPS week: 1737   MJD: 56403.500-56409.500

                                                         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 |      27     -13      63     179     -1 |       5      9
            |      26      24      90     146      4 |       1
emr   uuuuu |      17      29      45     -24      5 |      17     21
            |      12      11      60      30     10 |       1
esa   uuuuu |       0      -8     -46      78     -5 |      17     19
            |      12      17      67      98      2 |       3
gfz   uuuuu |      51      26      37     -56      1 |      13     14
            |      22      20     135     121      8 |       1
grg   uuuux |      -1       3      95    -160     23 |     -10     20
            |      12      17      53     115     11 |       9
igr   xxxxx |     -60       2      54     -45      1 |      -2      9
            |      12      16      31      28      4 |       1
irf   xxxxx |      -8     -11     -36     -37      0 |       0      7
            |       8       6      29      23      5 |       2
jpl   uuuuu |     -55      -3      35    -109    -19 |      32     35
            |      23      27     128      69      9 |       7
mit   uuuuu |     -14     -15    -132     -41      0 |      16     17
            |      15      18      53     106      7 |       2
ngs   uuuuu |     -37      -6      22      22      1 |       6     11
            |      73      51      98     185      4 |       2
sio   xxxxx |      59      43    -232     -15    -20 |      54     57
            |     122      50      89      86      8 |       6


Table 7.1737.0   GPS week: 1737   Day: 0   MJD: 56403.500

                                                         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 |      45      17      81      54      1 |       7      9
emr   uuuuu |      18      39      10      10    -12 |      18     21
esa   uuuuu |       1       7     -38     -56     -2 |      21     22
gfz   uuuuu |      61      13       9     -42     10 |      13     15
grg   uuuux |      21      27     118     -16     32 |     -23     34
igr   xxxxx |     -62      -4     104     -51      2 |      -1      8
irf   xxxxx |      -5      -6     -60      -4     -3 |       3      7
jpl   uuuuu |     -58       1      20     -26     -9 |      39     41
mit   uuuuu |     -10      -7    -173      75     -4 |      19     20
ngs   uuuuu |     -88     -95      56      81     -4 |      10     14
sio   xxxxx |     238     100    -355      89    -22 |      63     63

Table 7.1737.1   GPS week: 1737   Day: 1   MJD: 56404.500

                                                         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      -5      27      82      0 |       6      9
emr   uuuuu |      -7      42     -36     -26      3 |      16     21
esa   uuuuu |     -19       3     -31      27     -7 |      19     21
gfz   uuuuu |      27      21      75     -70      8 |      12     14
grg   uuuux |      -1      -1      42     -91     30 |     -20     32
igr   xxxxx |     -80     -12      29     -21      7 |      -2      9
irf   xxxxx |     -17     -21     -18     -24     -4 |       1      7
jpl   uuuuu |     -63      11      33     -59    -15 |      38     40
mit   uuuuu |     -14     -49     -88      53     -7 |      17     18
ngs   uuuuu |      83     -25      14      17      0 |       7     13
sio   xxxxx |     144      80    -189      64    -28 |      59     61

Table 7.1737.2   GPS week: 1737   Day: 2   MJD: 56405.500

                                                         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     -13      98      26      0 |       5      9
emr   uuuuu |      16      27       5       5      1 |      16     21
esa   uuuuu |       8     -38      -7      -3     -4 |      17     19
gfz   uuuuu |      13       4     136    -173      3 |      12     14
grg   uuuux |     -12      11      96     -96     16 |     -13     26
igr   xxxxx |     -45      -9      85     -61     -4 |      -2      9
irf   xxxxx |      -2     -15     -30     -17     -2 |       0      8
jpl   uuuuu |     -38      31    -112     -46    -19 |      35     37
mit   uuuuu |       4     -20    -164      65     -4 |      15     17
ngs   uuuuu |     -23      65     -25     219      2 |       5     11
sio   xxxxx |     130      23    -256      44    -23 |      56     59

Table 7.1737.3   GPS week: 1737   Day: 3   MJD: 56406.500

                                                         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 |      27      -3     -55      93      6 |       5      9
emr   uuuuu |      27      39      33     -38     12 |      15     20
esa   uuuuu |      -8     -12      -6      65     -5 |      17     19
gfz   uuuuu |      71      18     165    -150     -8 |      13     15
grg   uuuux |       5       1      85     -88      5 |      -5     12
igr   xxxxx |     -52      -5      16     -22     -4 |      -2      9
irf   xxxxx |      -7      -4     -14     -66     -5 |       0      8
jpl   uuuuu |     -28     -49      45    -119    -26 |      34     37
mit   uuuuu |     -14       0    -110     -57     -7 |      16     18
ngs   uuuuu |     -85      14     -98     210     -3 |       6     12
sio   xxxxx |      74       9    -188     -71    -28 |      56     58

Table 7.1737.4   GPS week: 1737   Day: 4   MJD: 56407.500

                                                         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 |      71       4      10     352     -5 |       7     11
emr   uuuuu |      25      15     140     -46      9 |      19     23
esa   uuuuu |      18     -10    -106     128     -9 |      17     20
gfz   uuuuu |      59      20     138    -164      6 |      14     15
grg   uuuux |       5       2     173    -287     14 |      -4     12
igr   xxxxx |     -58      -1      55     -96      0 |      -1      9
irf   xxxxx |       4     -16       4     -64      4 |       0      8
jpl   uuuuu |     -57     -26      62    -219    -32 |      32     35
mit   uuuuu |     -24     -11     -73    -105      4 |      15     17
ngs   uuuuu |    -123      19     -70      76      5 |       6     12
sio   xxxxx |      -8     -29     -82    -109    -17 |      53     56

Table 7.1737.5   GPS week: 1737   Day: 5   MJD: 56408.500

                                                         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 |      36     -39      47     342     -4 |       5      9
emr   uuuuu |      19      26      74      -4     21 |      17     19
esa   uuuuu |      -6      11    -163     175     -5 |      14     17
gfz   uuuuu |      64      38     -44      60     -7 |      13     14
grg   uuuux |     -15     -28     133    -229     31 |      -4     12
igr   xxxxx |     -53      14      56     -18      2 |      -4      7
irf   xxxxx |     -20      -7     -54     -45      3 |      -2      7
jpl   uuuuu |     -97       7     281    -160    -26 |      26     30
mit   uuuuu |     -41       4    -100    -187      3 |      14     15
ngs   uuuuu |      31     -36      97    -192      4 |       4      8
sio   xxxxx |     -63      98    -247    -123    -15 |      48     51

Table 7.1737.6   GPS week: 1737   Day: 6   MJD: 56409.500

                                                         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 |      14     -50     232     305     -4 |       3      8
emr   uuuuu |      23      17      91     -72      4 |      18     22
esa   uuuuu |       6     -16      31     213     -7 |      13     15
gfz   uuuuu |      63      65    -216     145     -6 |      12     13
grg   uuuux |      -8       7      20    -312     33 |      -1     14
igr   xxxxx |     -67      32      33     -47      3 |      -4      7
irf   xxxxx |      -5      -9     -76     -39      9 |      -2      6
jpl   uuuuu |     -41       5     -86    -133     -8 |      21     27
mit   uuuuu |       0     -21    -217    -131     13 |      13     15
ngs   uuuuu |     -55      14     183    -258      5 |       4      8
sio   xxxxx |    -100      19    -307      -2     -6 |      44     48



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