[IGSREPORT-24139] Wk 1875 IGS Final Orbits

IGS ACC igs.acc at noaa.gov
Mon Jan 4 07:05:44 PST 2016


Author:  AC Coordinator / NOAA NGS

sum-file Version 2.0
Final IGS Orbit Combination - Week 1875   (Dec 13, 2015 - Dec 19, 2015)

Contacts: igs.acc 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:

igs1875[0-6].sp3  IGS GPS ephemeris files in SP3 format.
igs1875[0-6].clk  IGS GPS satellite and station clocks in clock RINEX format.
igs1875[0-6].cls  IGS GPS clock combination summary report.
igs18757.erp      Earth Rotation Parameters (ERP) and their rates as well as
                  Universal Time (UT1-UTC) and Length Of Day (LOD) associated 
                  with IGS ephemerides.
igs18757.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  |  ALL   | 10
                0  |  COD   | BRST PDEL BRST PDEL
                0  |  GFZ   | TONG POHN
                0  |  GRG   | 10 13 MCM4 WIND ALRT MCM4 WIND
                0  |  JPL   | TUVA
                1  |  ALL   | 10
                1  |  COD   | HOB2 NRMD TWTF
                1  |  GFZ   | TONG
                1  |  GRG   | 10 MAC1 MCM4 SYOG ADIS MAC1 MCM4 SYOG
                1  |  JPL   | MAC1
                1  |  MIT   | RBAY TIDB
                2  |  ALL   | 10
                2  |  COD   | 29 29 TRO1 NKLG TRO1
                2  |  ESA   | TRO1 TRO1
                2  |  GFZ   | 9 HYDE KOUR POHN HYDE KOUR
                2  |  GRG   | 13 13 HOFN ALRT HOFN MAL2
                3  |  COD   | BRST BRST REUN
                3  |  ESA   | HOB2
                3  |  GFZ   | 22 NANO HOB2 MAC1 NANO TONG
                3  |  GRG   | 10 10
                3  |  JPL   | REUN
                3  |  MIT   | HOB2
                4  |  COD   | 19 19 REUN REUN
                4  |  ESA   | COCO
                4  |  GFZ   | HOB2
                4  |  GRG   | 2 10 28 2 10 13 28 DAV1 LPGS MAL2 DAV1 LPGS MAL2
                4  |  JPL   | DGAV REUN
                5  |  COD   | NRMD NRMD
                5  |  GFZ   | TONG
                5  |  GRG   | 6
                6  |  ESA   | HYDE HOB2 HYDE
                6  |  GFZ   | HOB2 TONG GLPS HOB2 TONG
                6  |  GRG   | 8 13 8 13 DARW DGAR GLSV HYDE KARR NRMD PDEL PIMO
                6  |  GRG   | HYDE
                6  |  JPL   | MAW1 PIMO TUVA

 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. The following table lists all maneuvered satellites for this week. The
    solutions from COD and ESA, which modeled the maneuver, are used that day for
    combination, if available. An associated accuracy code of 0 (unknown) is given
    if only one AC is left (no redundancy). For the long arc evaluation the arc is
    split into two parts at the given maneuver epoch.
    
               PRN |    Date    | Ref. NANU
               ----+------------+----------
               G03 | 2015_12_17 | 2015100 
               G03 | 2015_12_18 | 2015100 

 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
               ----+--------+---------------
                0  |  COD   |   8

 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 G03 |    |    |    |    |  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 |   -1.7   -2.0   -2.7     -59     41     -8     .41
       EMR  |   0 |   -2.3    7.9   17.1      34      4     18     .47
       ESA  |   0 |    -.6   -1.7    -.9      -4    -35     20     .12
       GFZ  |   0 |     .1   -1.4   -2.9     -42   -116      3     .64
       GRG  |   0 |    6.1   -1.0   -8.7     -18    -31     -7     .92
       JPL  |   0 |    3.1    1.5   10.4     -25     19     52     .95
       MIT  |   0 |    3.6    2.0    7.5      42      7     -2     .60
       NGS  |   0 |   -2.1   -6.3    3.8     -33     -1    -54     .84
       SIO  |   0 |    1.9    2.9    2.1     -16    -18    -26     .69

       COD  |   1 |   -1.1   -1.5   -1.6     -39     29     -1     .63
       EMR  |   1 |    5.0    5.6   22.2      55     -3      8     .52
       ESA  |   1 |    -.6    -.9    -.2     -10    -42     40     .15
       GFZ  |   1 |     .7    -.9   -2.6     -34   -117    -26     .51
       GRG  |   1 |    7.0    1.6   -4.2     -39     12     24     .76
       JPL  |   1 |     .4    7.7   11.8     -35     29     26     .83
       MIT  |   1 |    2.8    1.1    7.5      51      6    -29     .77
       NGS  |   1 |    -.3    -.8   12.6     -53    -13    -43     .72
       SIO  |   1 |    -.2    3.1   13.9      33    -27    -14     .79

       COD  |   2 |   -1.8   -1.9   -2.1     -42     38     28     .48
       EMR  |   2 |    8.4     .8   17.6      42     -9     26     .52
       ESA  |   2 |    -.6   -1.3     .3     -16    -41     42     .29
       GFZ  |   2 |     .1   -1.1   -2.6     -26   -113     -3     .56
       GRG  |   2 |   10.5     .5   -5.1     -38    -15     69     .76
       JPL  |   2 |    3.0   11.4    9.4     -26    -19     44     .70
       MIT  |   2 |    3.9    1.3    9.0      43     13    -12     .70
       NGS  |   2 |    2.9    1.7    5.8      -2    -31      6     .86
       SIO  |   2 |     .4    6.6   14.6      28     -7    -39     .75

       COD  |   3 |   -2.9   -1.7   -2.8     -31     36     21     .71
       EMR  |   3 |    1.9    1.5   25.4      64     -9     20     .50
       ESA  |   3 |    -.2   -1.9    -.2     -45    -44     22     .24
       GFZ  |   3 |     .8    -.9   -1.7     -56   -113    -11     .49
       GRG  |   3 |   10.9    -.4   -6.3     -42     10     49     .98
       JPL  |   3 |    4.7    2.7   15.1       4     -4     53     .65
       MIT  |   3 |    3.1    -.5   14.0      45     -9    -20     .85
       NGS  |   3 |    -.2   -2.9   17.5     -81    -34    -18     .80
       SIO  |   3 |    4.0    -.4   26.2      21    -31    -14     .53

       COD  |   4 |   -1.9   -2.1   -3.4     -10      8     26     .72
       EMR  |   4 |    6.6    2.7   26.4      86      4      6     .54
       ESA  |   4 |    -.1   -2.7    -.5     -23    -53     19     .37
       GFZ  |   4 |    -.1   -1.4   -2.1     -75   -105     -9     .57
       GRG  |   4 |   14.9    1.5   -4.1     -19    -17     39     .72
       JPL  |   4 |    7.8    8.3   22.6      -1      7     29     .44
       MIT  |   4 |    2.8   -1.6   14.2      57     -8    -11     .78
       NGS  |   4 |    4.7    -.5   16.4     -76    -54      6     .57
       SIO  |   4 |    2.7    -.9   23.4      36    -36     27     .56

       COD  |   5 |   -1.7   -1.6   -2.3     -21     16      0     .47
       EMR  |   5 |    6.8    5.6   20.0      58     21    -12     .33
       ESA  |   5 |    -.3   -1.6    -.5     -40    -45     37     .24
       GFZ  |   5 |     .3   -1.2   -1.7     -61   -131    -10     .48
       GRG  |   5 |   11.4    3.3   -7.0     -63      4     20     .76
       JPL  |   5 |    5.4    9.4   12.9      -1     -8     21     .54
       MIT  |   5 |    5.2    -.4   11.4      35      3    -33     .38
       NGS  |   5 |    6.1   -1.3   17.9    -106    -58      8     .71
       SIO  |   5 |   10.0    1.3   20.9      18      0    -27     .53

       COD  |   6 |   -2.5   -1.5   -2.4     -33     17      2     .40
       EMR  |   6 |    4.2    1.4   21.8      62     15     -7     .55
       ESA  |   6 |    -.2   -1.5    -.4     -27    -49     53     .39
       GFZ  |   6 |    -.6   -2.3   -2.2     -71   -113      0     .64
       GRG  |   6 |    6.8    1.3   -1.2     -38    -12     24    1.05
       JPL  |   6 |     .0    1.3    7.9     -33      3     80    1.27
       MIT  |   6 |    2.9     .1   12.0      19     -9    -10     .53
       NGS  |   6 |    -.2   -2.4   11.3     -60    -25    -34     .69
       SIO  |   6 |    2.1     .0   23.5      28    -31     19     .59


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 1.1875.a). It also displays the computed satellite
position sigmas for the combined orbits (Table 1.1875.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 2.1875.[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 3.1875.[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 5.1875.0-6). 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 1875 summary.                       (Dec 13, 2015 - Dec 19, 2015)

Table 1.1875.a   GPS week: 1875   MJD: 57369.000-57375.000

         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  241|    0     0     0    -5    24    -9   .03   12   11 |    -973    -177     14    131
        |    0     0     2    21    14    12   .06           |     308     398
emr   80|    0     0     6    -6   -23   -18   .17   11   11 |    5971    -247     17    130
        |    1     2     1    17    15     7   .04           |    1193     265
esa  150|    0     0     5   -43    -6     3  -.28   11   11 |    -600     908      8    138
        |    0     0     0    28    14    16   .06           |     712     804
gfz  203|   -1     0    -5   -22    -8    -8   .13   10    9 |    -413     252     10     91
        |    0     1     1    18    10     7   .03           |     287     301
grg  115|    1     0    -2   -36    46    16  -.03   15   15 |    -626     577     14    188
        |    1     0     2    19    15    18   .02           |    1101    1387
igr  n/a|    0     0    -1   -11    19     0   .02    5    4 |    5676     630     15     70
        |    0     0     1    21     9     7   .02           |     801     678
jpl   80|    1     0     8    28    20    20   .18   11   11 |    5998    -246     16    110
        |    1     1     0    51    26    31   .03           |    1207     269
mit  348|    0     0    -5    12    -8    -7  -.14   11   10 |    -563      75     42    351
        |    1     0     0    23    20    13   .05           |    1785     792
ngs  224|    0     0     0    21    -9    10   .00    8    7 |    -467    -366   1016   2410
        |    0     0     2    30    12    16   .02           |    1713     760
sio  301|    0    -2    -8    29     0   -21  -.18   13   13 |     ---     ---    ---    ---
        |    0     0     1    32    26    23   .02           |     ---     ---


Table 1.1875.b   GPS week : 1875   MJD: 57369.000-57375.000   

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



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 2.1875.0   GPS week: 1875   Day: 0   MJD: 57369.000                            

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  248|    0     0     3   -11    12    -4  -.04   11   11 |    -665    -585     15    130
emr   80|   -1     4     7   -32   -33   -20   .20   11   11 |    7502    -634     19    105
esa  150|    1     0     6   -23   -26    -9  -.36   12   12 |     156     109     10    133
gfz  199|   -1    -2    -5   -13   -19     0   .11   10   10 |    -163       6     12     83
grg  117|    1     0    -3    -7    40     4  -.04   15   15 |      82    -257     14    151
igr  n/a|    0     0     0   -12    22     1  -.01    4    4 |    5454    -289     16     67
jpl   80|    0     0     8    18    38    19   .16   11   11 |    7586    -635     18    120
mit  349|    2     0    -5     2     0    12  -.09   12   12 |     243    -341     45    369
ngs  226|    1     0    -2    47     2     7   .02    8    7 |    -665    -597   1078   2856
sio  299|    1    -1    -8    -9    11   -34  -.19   14   13 |     ---     ---    ---    ---

Table 2.1875.1   GPS week: 1875   Day: 1   MJD: 57370.000                            

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  247|    1     0     0     1    10   -21  -.01   12   11 |    -476    -795     16    136
emr   80|   -1     2     6     0     0   -13   .14   11   11 |    6846    -125     19    141
esa  150|    0     0     4   -50    19    -7  -.32   11   11 |     368     -45      8    151
gfz  202|   -1    -2    -6   -25    -2   -12   .11   10   10 |      15    -140     10     90
grg  118|    0    -2    -2   -64    54    18  -.04   14   15 |    -114      -6     13    186
igr  n/a|    0     0    -1   -28    11   -11   .00    5    5 |    5298     160     15     68
jpl   80|    0     2     8   -26    21     5   .18   10   10 |    6854    -116     16    111
mit  349|    2    -1    -5     0   -23   -28  -.09   11   11 |     -22     -91     42    358
ngs  226|    0     0     0    75   -16    43   .00    8    7 |    -643    -644   1096   2490
sio  305|    0    -2    -6    25   -43   -36  -.15   13   13 |     ---     ---    ---    ---

Table 2.1875.2   GPS week: 1875   Day: 2   MJD: 57371.000                            

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  243|    0     0     1   -22    18   -27  -.00   13   12 |   -1005    -133     15    136
emr   80|    2     0     6    23   -36    -4   .23   12   12 |    6535     -67     18    150
esa  150|    0     1     4    -7    -6     5  -.31   11   11 |   -1790    2057      7    154
gfz  204|   -1     0    -5   -20   -24   -16   .15   13   12 |    -242     176     13    107
grg  115|    2    -1    -2   -49    68    44   .01   15   16 |    -126    -114     15    194
igr  n/a|    0     0     0    15     4    -2   .01    5    5 |    5228      92     15     66
jpl   80|    2     0     8    11    -1    35   .21   13   13 |    6577     -73     17    104
mit  349|    0     0    -4    -3    29   -17  -.11   11   10 |      65    -283     39    349
ngs  226|   -1     0    -1    28   -20    12  -.01    9    8 |    -942    -388    862   2117
sio  298|   -1    -1    -6     9    30   -31  -.18   13   13 |     ---     ---    ---    ---

Table 2.1875.3   GPS week: 1875   Day: 3   MJD: 57372.000                            

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  239|    0     0    -2     8    38     3  -.00   12   11 |   -1108      49     15    129
emr   80|    0     0     8     5   -33   -18   .19   11   11 |    6570    -290     17    124
esa  150|    0     0     4   -80     0   -14  -.31   11   11 |    -639    1235      9    117
gfz  205|    0     0    -6   -42    -5   -11   .13    9    9 |    -618     720     10     88
grg  113|    2     0    -3   -46    58     5  -.03   16   16 |   -3080    3674     14    194
igr  n/a|    0     0    -1   -20    18    -4   .03    4    4 |    5217     750     14     79
jpl   80|    2     1     9    29    11    46   .20   11   11 |    6573    -288     14     89
mit  348|    0    -1    -4    52    -6    -8  -.15   11   10 |   -4592    1842     43    344
ngs  224|   -1     0     3     1   -28     6  -.01    8    7 |    3256   -1635    848   2314
sio  300|    0    -2   -11    52    19   -14  -.15   14   13 |     ---     ---    ---    ---

Table 2.1875.4   GPS week: 1875   Day: 4   MJD: 57373.000                            

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  237|    0     0    -3   -27    11    -2   .07   13   12 |   -1406     391     15    137
emr   80|    1     0     7   -15   -23   -22   .13   11   11 |    5379    -549     19    112
esa  150|    0     0     5   -81    -4     9  -.24   11   11 |    -634     441     10    128
gfz  204|   -2     0    -6   -46     3     3   .17   10    9 |    -668     166      9     99
grg  115|    1     0     1   -21    22    37  -.04   15   14 |    -558     418     14    207
igr  n/a|    0     0    -3   -34    21    10   .06    5    4 |    5211     798     16     73
jpl   80|    4     0     6   116    71   -33   .16   13   13 |    5396    -564     17    127
mit  349|    0    -1    -5    39   -23     4  -.17   10    9 |     448    -438     38    331
ngs  222|    0     0     3     3    -2   -12   .01    8    7 |   -2109     888    980   2307
sio  295|    0    -1    -8    40   -16    24  -.18   13   12 |     ---     ---    ---    ---

Table 2.1875.5   GPS week: 1875   Day: 5   MJD: 57374.000                            

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  240|    0     0     0   -18    43   -17   .10   13   11 |   -1079     -14     13    127
emr   80|    2     0     5   -16    -3   -23   .12   11   11 |    4498     113     17    150
esa  150|    0     0     5   -30   -10    33  -.26   10   11 |    -765     824      9    143
gfz  207|   -1     0    -3     7     0    -8   .13    9    8 |    -747     567      9     77
grg  114|    0     0    -4   -42    47    14  -.06   14   14 |    -384     364     15    196
igr  n/a|    0     0    -3    21    34     4   .03    5    4 |    5924    1551     15     66
jpl   80|    1     0     8    74     0    11   .13   11   11 |    4487     113     16    119
mit  349|    0     0    -6     5   -32   -14  -.18   11   10 |     -65     -38     47    323
ngs  223|    0     1     1   -11    -6     8  -.02    9    8 |   -1074     -36    914   2242
sio  306|    0    -4    -9     1   -12   -10  -.17   15   14 |     ---     ---    ---    ---

Table 2.1875.6   GPS week: 1875   Day: 6   MJD: 57375.000                            

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  239|   -1     0    -3    32    34     4   .09   13   11 |   -1072    -158     13    122
emr   80|    2     0     5   -11   -33   -26   .19   11   11 |    4472    -179     15    128
esa  150|    0     0     5   -30   -18     5  -.19   11   11 |    -900    1735      9    142
gfz  206|   -1     0    -3   -15   -10   -15   .09    9    8 |    -468     271     12     93
grg  117|    0    -1    -4   -25    35    -6  -.02   15   15 |    -202     -40     14    188
igr  n/a|    0     0    -1   -20    24     0   .05    5    4 |    7400    1349     14     76
jpl   80|    2     0     8   -23     3    61   .18   11   11 |    4519    -164     16    106
mit  349|    0     0    -5    -5     0    -1  -.21   11   11 |     -24    -124     44    383
ngs  222|    0     0     1     8     6     5   .01    8    7 |   -1092    -150   1339   2550
sio  309|    1    -2    -7    84    17   -45  -.23   12   12 |     ---     ---    ---    ---

       
       
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 3.1875.0   GPS week: 1875   Day: 0   MJD: 57369.000                            

        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   13    6   17    3    8    8    6   11    3 |    18   27   20   21   26   20   27   24   19   25    21
   2  |   15    9   13   12   14    4   12   14    9   17    4 |    41   37   33   46   40   39   35   44   38   47    39
   3  |    9   11   12   12   14    5   13    9    8    8    3 |    28   21   27   20   22   29   24   21   19   18    27
   5  |    8   10   10    9    9    4    9   11    8   14    3 |    38   37   36   41   35   37   38   36   38   39    36
   6  |    6    9   13    8    8    4    9   12    6   12    3 |    20   27   18   20   21   20   26   23   23   24    21
   7  |   10   15   12   14   16    5   16   11    9    9    4 |    53   57   49   59   55   52   57   53   55   55    53
  X8E |   67   20   20   16   25   14  ---   13   18   15    7 |   122  103  105  110  103  105  ---  102  103  109   103
   9  |   11   10   15   11   14    3    7   10    7   10    3 |    33   36   36   37   31   34   38   36   37   39    35
 X10  |   19   21   17  ---   42   17   24   27   42  ---   12 |    58   65   52  ---   69   57   64   60   56  ---    54
  11  |   11    8   15    8   26    4    8   13    8   12    4 |    33   41   29   41   47   35   42   41   38   39    37
  12  |   13   10   10    9   17    3   10   12    8   16    4 |    30   33   24   26   28   25   27   25   27   24    25
  13  |   11   11   10   12   23    4   12    9    7   17    4 |    30   34   26   27   38   25   31   25   25   22    26
  14  |   10   10    9    8   16    3   11   13    8   14    3 |    26   33   23   23   26   22   29   24   24   19    23
  15  |    9   12    9   10   13    3   11   12    8   15    3 |    33   41   34   28   28   30   37   27   27   25    30
  16  |   10   15   13   11   13    4   10   14   16   19    5 |    25   28   23   28   24   22   26   20   25   18    21
  17E |    9   12    7    9   11    3   10   16    8   13    3 |    34   34   29   32   31   30   34   32   33   36    31
  18  |    8   11   12   12   15    4   11   11    7   15    4 |    22   27   21   33   27   23   20   30   27   26    24
  19E |   17   15    8   11   12    4   11   15    7   11    4 |    56   58   52   57   56   55   56   55   57   58    55
  20  |    6    9   11    9   12    4    9   10    7   15    3 |    31   32   29   39   32   33   28   38   34   36    33
  21  |   12   10   14   12   17    3   12   12    8   21    4 |    39   40   35   46   43   38   36   45   37   45    39
  22  |    9    8   10    9   12    3    9   10    7    7    3 |    30   33   29   36   35   32   27   38   31   26    32
  23  |   10   12   12    8   19    7   12   12    8   19    4 |    23   29   20   19   22   20   30   20   25   23    21
  24  |   11   15   14    7   11    4   12   11    6   11    4 |    54   58   57   53   52   53   55   58   52   51    54
  25  |    8   12   15    5   11    3   11    8    5    8    3 |    26   34   32   27   28   26   30   27   27   25    27
  26  |   10    9   14    8   10    3   10   10    8    9    3 |    28   31   32   30   27   29   30   26   31   29    28
  27E |   18   14   17   12   15    7   13    9   11   13    4 |    31   33   35   33   30   29   28   30   27   32    29
  28  |    8   11   11    8   17    3    9   14    6   10    3 |    31   33   26   26   31   25   31   26   26   21    26
  29E |   15   12    8   10   14    5   12   16    6   15    4 |    38   37   35   35   40   33   35   37   32   38    34
  30  |   10   11   15    9   12    4   10    7    5    9    3 |    26   28   30   24   25   25   28   24   25   28    25
  31  |   20    8    7    8   21    4    9   11    7   10    4 |    44   45   38   46   50   41   46   40   43   40    42
  32  |   10    8   10    8   11    3    9   14    7   17    3 |    23   31   24   22   29   24   30   24   22   27    24
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |   11   11   12   10   15    4   11   12    8   14      |T   36   38   34   36   37   34   34   35   34   34    34
 WRMS |   11   11   12   10   15    4   11   12    7   13      |NE  30   34   28   30   32   29   32   30   29   28    29
 MEDI |   10   11   12    9   14    4   10   12    8   13      |MD  31   34   30   32   31   30   30   30   31   28    30

Table 3.1875.1   GPS week: 1875   Day: 1   MJD: 57370.000                            

        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    8   13    7   11    7    7   10    6   12    3 |    22   27   21   24   24   19   27   22   21   26    22
   2  |   14   10   12   11   13    7   11   18   10   18    4 |    35   33   29   36   29   31   31   33   32   31    30
   3  |    9   12   13   14    9    4   13    8    7   11    4 |    20   19   21   21   18   20   18   16   20   18    20
   5  |    7    8    9    8   11    5   10   11    8   13    3 |    25   23   21   23   18   22   24   20   23   24    21
   6  |    7    7   10    8   12    5    7    9    5   13    3 |    24   26   21   24   25   21   27   22   24   25    23
   7  |   15   13    8   15   15    5   12    9    7    9    4 |    43   48   41   51   49   44   50   43   47   43    45
   8E |   28   14   19   13   18    6   11   13   12   11    5 |    69   63   64   66   59   61   56   63   60   65    61
   9  |   10    9   11    6   11    4    7   11    6    9    3 |    27   28   29   27   28   26   31   24   28   29    27
 X10  |   20   19   22  ---   46   17   20   26   41  ---   12 |    45   57   41  ---   59   49   58   44   45  ---    46
  11  |   10   12   14    7   21    5    7   12    7   10    4 |    27   35   23   31   39   27   31   27   28   27    27
  12  |   14   11    9    9   18    5   10   11    9   17    4 |    27   29   21   25   25   23   27   21   26   22    23
  13  |   10   13    8   10   24    4   11   11    8   15    4 |    24   30   19   23   36   20   27   19   21   16    21
  14  |   14    8   10    8   14    7    9   14    8   19    4 |    27   22   21   23   23   19   23   21   21   17    19
  15  |   12   14    9   10   13    4   11   13    9   15    4 |    28   30   25   24   25   23   30   20   24   21    23
  16  |   12   12   11    9   15    4    9   11    9   16    4 |    27   25   21   26   26   21   26   23   24   21    22
  17E |    8   11    6    9   14    3   11   12    6   14    3 |    31   32   26   30   26   28   33   27   32   34    29
  18  |    8   14    9   18   14    4   12   12    7   15    4 |    21   22   20   33   17   19   21   25   22   16    19
  19E |   18    9    5   11   12    4   10   13    8   10    4 |    53   52   46   48   48   48   51   47   49   47    48
  20  |    7    8    9    9   13    3    8   12   10   14    3 |    21   21   23   25   18   21   20   27   25   25    21
  21  |   10   10   13   12   15    4   11   12    8   18    4 |    26   29   26   33   29   25   26   30   24   27    25
  22  |    8    6    9   15   12    2    8   10    8   11    3 |    22   20   20   33   23   21   20   26   22   20    21
  23  |   10   14    9    9   16    6   12   11    7   17    4 |    23   29   23   24   22   22   28   20   25   20    21
  24  |   12   15   15    9   12    5   11   11    6   11    4 |    30   30   35   33   27   30   31   29   30   27    28
  25  |    8   10   14    7   12    3   11    8    6    9    3 |    23   28   29   25   22   22   27   22   25   21    23
  26  |    8    8   13    7    9    3    9    9    6   12    3 |    27   29   28   26   23   25   30   26   27   26    26
  27E |   18   11   17   10   13    5    9   12    7    7    4 |    23   20   28   29   20   21   21   20   23   20    21
  28  |    8   10    9    8   18    4    9   11    6   11    3 |    33   34   27   29   33   28   33   27   29   21    28
  29E |    8   13    7    9   15    7   14   15    8   15    4 |    28   32   28   28   29   28   28   31   27   30    27
  30  |   12    9   14    8   12    5    9    6    4    8    3 |    24   28   31   27   27   25   29   23   27   25    25
  31  |   15    8    9    7   17    3    7   10    7   10    3 |    41   43   34   41   44   37   40   36   38   36    38
  32  |   10    8    9    7   12    5    8   11    5   20    3 |    21   23   20   20   19   18   23   20   21   25    19
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |   12   11   11   10   14    5   10   11    8   13      |T   29   31   27   30   29   27   30   27   28   26    27
 WRMS |   11   11   11   10   15    5   10   11    7   13      |NE  26   28   24   26   26   23   27   24   25   22    23
 MEDI |   10   10   10    9   13    5   10   11    7   12      |MD  27   29   26   27   26   23   28   25   25   25    23

Table 3.1875.2   GPS week: 1875   Day: 2   MJD: 57371.000                            

        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   14   10   10    4   10    9    9   12    3 |    22   25   21   20   21   20   30   18   22   27    21
   2  |   17   11   12   12   15    7   16   17    9   15    5 |    37   33   32   36   31   32   34   36   36   37    33
   3  |    7   11   11   14   10    6   13    7    8   10    3 |    27   20   26   19   18   28   23   18   19   16    26
   5  |   12    9   10   10   11    6   11   11    8   13    3 |    30   27   24   27   22   26   26   23   27   27    25
   6  |    7    7   11    9   12    6   10    9    6   13    3 |    22   28   21   20   22   23   27   23   24   25    23
   7  |   14   17    9   16   14    5   15    9   13   12    4 |    44   47   39   49   47   42   48   42   41   44    43
   8E |   27   12   17   18   16    4   12   10   13   12    5 |    72   69   73   74   71   68   35   68   68   70    69
   9  |   16    9   13   23    9    5   10   10    8   11    4 |    30   33   33   40   29   32   36   30   32   36    32
 X10  |   18   18   19  ---   43   17   19   26   43  ---   12 |    49   58   41  ---   59   47   57   46   40  ---    44
  11  |   10   14   14   12   20    6   11   10   10    8    4 |    32   36   26   34   37   31   36   30   33   28    31
  12  |   16   10   10    9   16    6   14   10    9   15    4 |    30   30   22   24   26   24   31   22   26   23    25
  13  |   10   13   10   16   23    4   13   11    8   15    4 |    31   35   25   28   37   25   32   23   25   21    26
  14  |    9   14    8    9   15    4   12   15    9   11    4 |    22   27   19   21   20   19   28   23   21   16    20
  15  |   12   17   11   11   15    5   14   11    9   14    4 |    32   36   30   24   26   28   35   22   26   23    27
  16  |   16   11   11   14   15    3   11   12    9   19    4 |    28   26   20   25   23   20   27   21   22   19    21
  17E |    9   10    5    8   10    5   14   13    7   17    3 |    33   38   30   29   30   32   37   28   36   38    33
  18  |    9   13   10   28   16    5   14   10    7   13    5 |    21   16   17   43   17   19   14   24   19   19    19
  19E |    9   11    7    9   16    5   14   12    7   12    3 |    33   37   31   34   32   34   36   35   36   33    33
  20  |    7   10    7   10   16    4   12   12    9   12    3 |    26   24   23   29   22   25   20   31   29   29    26
  21  |   11   12   13   12   15    5   13   12   10   16    4 |    32   33   31   37   34   31   32   34   31   35    31
 X22  |    8    9    8  ---   11    5  ---   12    7  ---    4 |    24   21   21  ---   22   22  ---   28   24  ---    22
  23  |   10   16    9   12   15    7   13   10    6   13    4 |    23   28   18   23   23   19   27   20   21   16    20
  24E |   14   13   14    8   13    6   14    7    7   12    4 |    46   47   46   44   45   45   45   47   45   43    45
  25  |    9   10   14    6   13    5   13    7    5    9    3 |    24   29   26   22   24   23   28   22   23   22    24
  26  |   13   11   12    9    9    4   13   10    7   13    4 |    28   33   29   28   23   27   32   26   25   30    27
  27E |   20   10   14   11   16    5   12    8    7   13    4 |    23   22   27   25   25   22   25   20   22   22    22
  28  |    9   10   10    9   18    3   12   11    8   12    4 |    28   31   23   24   27   22   32   21   23   17    23
  29E |   15   15    6    8   18    5   18   15   10   17    5 |    41   38   36   35   36   35   38   40   37   42    37
  30  |   13   11   14   11   13    5   12    7    9   11    4 |    27   31   30   25   27   25   31   23   24   28    26
  31  |   14    9    8    6   18    4   10   11   10   10    3 |    40   40   32   38   43   35   38   35   35   29    35
  32  |   11   10    9   10   13    3    8   12    7   19    4 |    20   24   19   22   22   20   25   22   20   27    21
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |   13   12   11   13   15    5   13   11    9   13      |T   31   32   28   31   30   29   32   29   29   29    29
 WRMS |   12   12   11   12   16    5   13   10    8   13      |NE  28   29   24   27   26   25   30   25   25   24    25
 MEDI |   11   11   11   10   15    5   13   11    8   13      |MD  30   31   26   28   26   26   32   24   26   27    26

Table 3.1875.3   GPS week: 1875   Day: 3   MJD: 57372.000                            

        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    9   11    7   16    4   11    5    9   11    3 |    20   28   20   23   23   20   25   20   22   26    22
   2  |   13   12   12    9   14    6   13   15    9   17    4 |    34   34   28   37   35   32   31   37   31   40    32
   3  |   10   11   10    7   11    4   11    8    8    9    3 |    19   24   18   20   21   19   22   20   17   19    18
   5  |    6    8   11    7   10    4    9    8    7   12    3 |    29   31   29   29   26   29   30   28   27   30    28
   6  |    8    9   10    6   15    5    9    8    6   13    3 |    24   31   22   21   22   23   30   24   21   26    23
   7  |   12   20   10   12   19    5   13   10    9   12    4 |    53   59   51   59   63   55   60   55   60   54    56
   8E |   17   15   16   13   16    4   13   13   10   14    5 |    53   51   56   56   51   52   32   47   52   54    51
   9  |   16    9   12    7   16    4   10    8    7    8    3 |    36   37   35   34   32   32   36   34   37   34    34
 X10  |   21   18   17  ---   48    6   20   25   43  ---   12 |    50   57   44  ---   57   44   57   48   43  ---    45
  11  |    9   10   14    9   22    5   10    8    9   10    4 |    30   36   24   36   40   30   33   31   29   34    31
  12  |   16   12    8   10   19    3   13   11    8   16    4 |    30   31   22   24   28   24   30   23   25   22    24
  13  |    9   11    9   10   22    4   12   10    8   18    4 |    28   34   26   25   36   24   32   22   24   18    25
  14  |   10   13    9    9   12    4   11   14    8   11    3 |    22   29   21   22   24   21   26   27   21   22    22
  15  |   11   12   12   10   12    3   13   11    8   15    4 |    32   36   32   24   27   27   36   23   26   20    27
  16  |    9   12   11    9   15    5   10   12    9   16    4 |    27   28   24   28   26   24   27   22   21   20    23
  17E |   10    9    6    6   12    5   12   11    7   15    3 |    35   37   31   35   30   33   37   33   35   42    34
  18  |    9   12   11   19   16    4   12   10    6   15    4 |    27   23   26   41   26   27   20   30   26   26    26
  19E |   14   11    6    8   16    4   12   10    6   11    3 |    60   61   57   58   57   58   60   56   56   56    58
  20  |    8   10    9    7   13    4   12   10    7   12    3 |    26   23   26   30   28   27   22   31   30   33    27
  21  |   14   11   14   12   15    5   12   13    9   20    4 |    37   33   31   39   38   33   32   36   28   38    32
 X22  |   21   10   11   29   13    5  ---   11    9  ---    6 |    36   29   33   53   30   34  ---   37   31  ---    33
  23  |    8   14    9    9   18    6   13    9    9   17    4 |    29   35   28   27   27   26   36   25   32   24    27
  24E |   19   11   14    7   12    5   12    9    8   14    4 |    30   34   34   32   31   30   34   29   32   24    30
  25  |   10   11   14    7   14    4   10   12    6   12    3 |    28   32   31   25   27   25   30   27   24   27    27
  26  |    7    9   11    9   12    3   12    8    7   13    3 |    28   32   29   26   25   26   32   24   24   28    26
  27E |   14   13   15    8   22    4   13   12   11   12    4 |    27   26   31   27   28   26   26   26   26   25    25
  28  |   11   11   12    8   18    4   11   11    9   11    4 |    29   36   27   30   33   27   32   25   26   23    27
  29E |   25   13    6   12   15    6   15   13   11   19    5 |    42   35   31   33   30   32   35   33   34   40    33
  30  |   15   10   14    8   15    4    9    6    5   10    3 |    26   32   30   24   28   25   28   23   25   23    25
  31  |   12    9    8    7   18    4   10   11    9    9    3 |    39   43   34   38   44   39   43   38   38   33    38
  32  |   10    9    9    7   12    4    7   16    6   17    3 |    24   27   23   23   25   23   23   23   21   24    22
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |   12   11   11    9   16    4   11   11    8   14      |T   32   34   30   32   32   30   33   30   30   30    30
 WRMS |   11   11   11    9   16    4   11   10    7   13      |NE  29   32   27   29   29   27   30   28   26   26    27
 MEDI |   11   11   11    8   15    4   12   11    8   13      |MD  29   33   29   29   28   27   32   28   27   26    27

Table 3.1875.4   GPS week: 1875   Day: 4   MJD: 57373.000                            

        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    8   13    8   11    5   11    6    6   13    3 |    28   30   27   27   27   26   31   25   25   30    26
   2  |   15   10   14    9   13   10   15   13    9   19    4 |    33   33   28   36   30   31   35   34   28   38    30
  X3  |    9  ---    6  ---  ---  209  ---  ---  ---  ---    7 |   310  ---   30  ---  ---  820  ---  ---  ---  ---   308
   5  |    7    7   11    7   10    4   12    8    8   11    3 |    32   34   32   35   26   30   32   31   29   33    30
   6  |    9    7   11    7   10    5   10    6    4   12    3 |    28   33   27   27   27   27   35   26   27   30    27
   7  |   14   19    9   11   16    5   17   11    9   10    4 |    84   88   85   92   95   86   95   86   90   88    88
   8E |   17   11   14   12   11    3   13    8    7   11    4 |    49   48   50   49   47   47   33   44   46   46    46
   9  |   12    6   11    9   14    4    8    8    7    9    3 |    30   37   34   32   33   31   38   33   33   36    32
 X10  |   23   20   19  ---   48    9   20   25   45  ---   12 |    56   59   46  ---   55   47   61   50   44  ---    47
  11  |    9   12   15    8   21    5   14    9    7   13    4 |    32   34   25   33   38   29   35   30   28   32    29
  12  |   18   10   10    9   16    5   12    8    9   13    4 |    35   33   26   27   31   27   31   24   27   26    26
  13  |   10   11   11   10   21    5   15    8    8   14    4 |    27   33   25   26   35   24   33   22   24   20    24
  14  |    8   14   10   10   12    3   11   13    7   11    3 |    28   32   26   28   28   26   31   28   27   25    26
  15  |   13   13   12   10   12    4   16   10    9   14    4 |    30   36   30   26   26   25   35   22   26   23    26
  16  |   11   12   10    9   15    4   13   11    8   13    4 |    30   29   25   27   31   25   29   22   26   20    24
  17E |   14    9    9    8   12    4   11   11    6   16    3 |    35   36   33   31   29   31   28   30   27   33    30
  18  |    9   14    8   21   18    4   15   11   10   13    4 |    29   27   25   41   20   28   23   31   27   27    26
  19E |   13   11    8    8   18    4   14    9    9   10    4 |    43   43   41   43   41   41   45   39   41   47    41
  20  |    8   11    8    8   14    4   13   11    8   11    3 |    32   29   31   38   25   32   30   36   32   34    31
  21  |   15   11   13   11   15    4   22   12    9   17    4 |    31   31   30   32   30   29   26   33   27   33    27
 X22  |    7   10    9   11    9    6   10   12    9  ---    3 |    32   29   29   37   29   32   31   36   31  ---    30
  23  |    8   13    9   11   16    4   11    9    7   15    4 |    25   33   23   25   27   22   33   23   26   20    23
  24E |   20   14   14    9   16    5   13    9   10   16    4 |    34   35   34   33   32   30   31   31   29   24    29
  25  |    9   10   13    6   11    5   11    6    6    9    3 |    29   30   32   25   29   26   30   25   24   26    26
  26  |   13   10   11    8   11    3   11    9    7   11    3 |    31   34   30   26   29   28   33   25   30   28    27
  27E |   13   13   14    8    8    7   12    8    7   10    3 |    28   32   32   30   26   29   28   27   26   26    27
  28  |   11   10   11    8   20    3   11   10    6   11    3 |    30   33   29   33   32   28   33   26   30   24    28
  29E |   29   12    5   12   15    4   16   13   14   18    5 |    39   31   29   26   25   27   28   26   30   31    26
  30  |   12   11   15    8   14    5   15    7    7    8    3 |    25   32   35   30   33   28   35   27   28   28    28
  31  |   14    9    8    8   23    4   11   14    8   12    4 |    47   51   42   47   57   46   48   44   47   46    46
  32  |   10    9    6    8   12    5    8   15    7   12    3 |    28   31   24   21   24   24   29   23   24   25    23
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |   13   11   11   10   15    5   13   10    8   13      |T   43   36   32   33   33   57   35   31   31   32    40
 WRMS |   12   11   11    9   14    4   13    9    7   12      |NE  43   33   28   30   30   64   33   28   28   27    40
 MEDI |   12   11   11    9   14    4   12    9    8   12      |MD  31   33   30   31   29   29   32   28   28   28    28

Table 3.1875.5   GPS week: 1875   Day: 5   MJD: 57374.000                            

        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  |    6    8   13    8   10    3    9    9    8   18    3 |    20   23   22   26   20   20   26   15   20   31    20
   2  |   20   13   12   10   15    6   14   14   12   19    5 |    32   28   26   33   27   27   29   25   28   30    25
  X3  |    7  ---  ---    5  ---    6  ---   10  ---  ---    5 |    50  ---  ---   16  ---  132  ---   13  ---  ---    48
   5  |   10    8    9    7   10    4   11    9   12   13    3 |    21   21   20   25   19   19   20   20   22   25    18
   6  |    9    7   11    5   10    3    9   11    8   11    3 |    22   29   25   27   28   24   30   25   28   26    24
   7E |   19   19    8   11   17   10   14   12   11   12    5 |   100   98   99  104   97   96  102   96  104  101   100
   8E |   17   11   15    5   13    5    8   10   11   14    4 |    48   48   49   47   50   47   28   44   44   51    46
   9  |   11    9   12    8    9    4    8    9    8   10    3 |    28   28   29   28   25   24   30   24   27   29    25
 X10  |   19   19   17  ---   46   17   19   25   45  ---   12 |    41   51   36  ---   50   42   51   37   32  ---    37
  11  |    8    8   13   10   21    4    7   12   10   19    4 |    30   32   24   36   34   27   31   26   25   36    27
  12  |   14   12   10    9   14    4   14    9   11   16    4 |    30   28   25   30   27   25   29   25   27   26    25
  13  |    9   11   10   11   23    5   16   10    8   17    4 |    20   26   18   24   33   18   28   16   18   19    19
  14  |   10   12   10    7   13    4   10   12    8   13    3 |    26   24   20   28   25   21   24   22   21   19    21
  15  |   10   13   11    9   13    4   13   12    9   15    4 |    26   28   24   23   24   20   28   16   21   21    21
  16  |   14   12    9   11   13    4   10   13   11   19    4 |    33   27   25   29   28   25   26   25   28   27    25
  17E |    9   10    6    8   12    4   12   15    7   13    3 |    31   33   25   29   27   30   31   30   30   33    29
  18  |    8   12    7   13   14    3   11   11    9   16    4 |    28   18   23   36   20   25   18   27   26   22    23
  19E |   15   12    6    8   12    4   14   15    9   11    4 |    54   56   52   53   55   52   56   46   50   53    51
  20  |    9   10    8    7   13    3   12   11    9   13    3 |    24   19   24   28   24   23   20   27   29   30    23
  21  |   15   17   11   12   18    7   13   12   10   20    5 |    28   33   24   30   32   24   25   27   23   32    24
  22  |    9    8    8    7    7    3    9   10    7    9    3 |    28   20   24   30   24   24   21   27   25   23    23
  23  |    8   14    9   10   16    5   11   12    8   15    4 |    27   30   24   25   25   20   28   21   23   21    22
  24E |   10   11   14    6   16    5   14    9    9   11    4 |    24   24   28   25   22   22   24   23   23   21    22
  25  |   10   10   14    6   10    3   11    7    7   11    3 |    26   27   30   26   26   24   27   23   27   23    24
  26  |   13    8   10    7    8    3    9   13    8   14    3 |    27   28   27   22   24   24   27   25   24   26    24
  27E |   14   11   15    6   11    5    9    9   10   14    4 |    22   22   26   22   22   20   23   19   22   25    21
  28  |   10    9   10    9   16    4    9   13    9   10    3 |    33   32   29   34   32   27   32   23   30   25    28
  29E |   29   12    6   13   18    6   13   11   11   19    5 |    39   31   26   27   26   26   28   27   26   31    26
  30  |   13   10   13    7   16    7    9    6    7   13    3 |    28   29   34   32   33   29   31   25   30   33    28
  31  |   12    9    5    6   15    5   10   10    8   13    3 |    66   65   65   67   68   64   67   61   66   61    64
  32  |    8    8    8    6   10    3    7   14    6   14    3 |    23   25   21   21   23   18   25   14   19   18    19
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |   13   11   10    9   14    5   11   11    9   15      |T   33   32   30   32   32   32   32   28   30   31    30
 WRMS |   11   11   11    8   14    4   11   10    8   14      |NE  28   27   24   27   27   28   27   22   24   25    24
 MEDI |   10   11   10    8   13    4   11   11    9   14      |MD  28   28   25   28   26   24   28   25   26   26    24

Table 3.1875.6   GPS week: 1875   Day: 6   MJD: 57375.000                            

        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  |    6    8   12    8   11    4    7    4    8   15    3 |    22   24   21   21   23   20   26   19   22   28    21
   2  |   13   11   11   10   16    5   15   11   11   17    4 |    40   35   31   42   39   35   32   37   33   43    35
  X3  |    7   11   10    9  ---    5   11   11    9    7    3 |    21    7    7   12  ---   57    5    9    4    4    21
   5  |    6    7   10    6   12    4   10    9    8    9    3 |    35   35   35   35   35   35   32   36   36   37    34
   6  |    6    8   12    6    8    5    8    8    7    8    2 |    24   27   23   22   22   22   26   22   23   25    23
   7E |    8   16    9    9   16    6   11   11    8    8    3 |    61   67   60   68   67   62   67   65   66   66    65
   8E |   17   12   16    4   17    4   10    9    9   11    4 |    54   48   52   52   51   50   31   47   50   55    50
   9  |    9    8   11    9   13    3    7   11    6   14    3 |    33   36   35   34   29   31   35   33   32   36    32
 X10  |   19   19   19  ---   47   12   17   28   38  ---   11 |    91   92   80  ---   88   82   94   89   73  ---    81
  11  |   12   12   14    8   23    4    8   10    9   14    4 |    34   33   23   33   39   29   33   31   31   35    30
  12  |   15   12   10   12   13    3   14   10    7   15    4 |    30   29   22   26   26   23   28   21   25   22    23
  13  |    9   10   11    8   24    5   14    8    7   12    4 |    26   29   23   20   34   20   31   20   23   19    22
  14  |    7   12   10    8   12    4   12   12    9   12    3 |    20   23   18   23   23   17   24   23   18   15    18
  15  |   13   11   12    8   13    4   12   11    7   14    4 |    33   35   31   25   24   25   36   20   27   22    26
  16  |   16   10    8   10   15    5   11   13    8   15    4 |    31   27   22   28   27   23   28   25   24   25    23
  17E |   12    8    8    7   11    3   11   15    8   11    3 |    44   40   37   40   39   37   40   36   39   43    38
  18  |   10   13    8   15   14    3   12    9    7   15    4 |    23   20   20   35   21   21   17   27   25   24    21
  19E |   23    9    7    9   17    3   13   13   10   10    4 |    57   53   47   47   47   50   51   48   46   48    48
  20  |    9   11    7    7   14    4   11    8    7   12    3 |    30   26   28   35   31   28   25   33   31   34    29
  21  |   14   11   12   11   16    3   12   11    8   16    4 |    32   33   30   37   34   32   32   36   33   40    32
  22  |    7    9    8    7   11    4   10   13    7    8    3 |    31   24   27   34   28   30   24   35   30   23    28
  23  |    7   12   10   10   17    4   12   13    7   18    4 |    22   28   19   20   22   18   30   20   21   17    19
  24E |   16   11   12    6   18    5   12    8    7   12    4 |    36   38   40   37   36   34   36   35   35   31    35
  25  |    7   11   14   12    9    7   11    8    6    8    3 |    25   31   28   25   26   24   29   23   24   19    24
  26  |   11    9    8    8   15    4   10   12    7    9    3 |    29   31   27   24   27   26   30   25   25   28    25
  27E |   13   11   14    6   14    4   10   10    6    9    3 |    26   24   29   25   22   24   24   22   25   25    23
  28  |   10    9   11    8   15    4   11   14    7    9    3 |    30   30   24   28   27   25   30   26   25   22    25
  29E |   26   14    5   11   18    6   12   10   11   14    5 |    51   43   38   41   37   39   41   42   37   47    40
  30E |   20   10   13   10   17   11   10   10    6    9    4 |    69   75   78   75   75   69   77   73   71   76    73
  31E |   15    8    8    7   15    5   10   11    7    8    3 |    77   80   76   79   83   77   83   77   79   78    78
  32  |    7    7    7    5   15    3    6   11    8   13    3 |    22   26   21   23   28   22   25   23   23   26    22
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |   13   11   11    9   15    5   11   11    8   12      |T   37   37   33   34   37   35   36   34   34   33    34
 WRMS |   11   11   11    8   15    4   11   11    7   12      |NE  31   30   27   27   31   29   30   28   27   25    27
 MEDI |   11   11   10    8   15    4   11   11    7   12      |MD  31   31   28   33   29   29   31   31   30   28    28



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 4.1875   GPS week: 1875   MJD: 57369.0-57375.0

CENT| CLK EPO  |        BRUX       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 2962 |U    6     7    16 |U   10    11    33 |U    9    11    22 |
emr | emr 2948 |     8     7    20 |U   12    10    37 |     9    10    21 |
esa | esa 2948 |     8     6    16 |U   11    12    40 |     8    10    20 |
gfz | gfz 2846 |U    7     8    18 |U   13    12    44 |U    8    10    19 |
grg | grg 2934 |U   14    22    44 |U   12    12    38 |    10    10    22 |
igr | igr 2968 |     7     7    15 |    11    12    37 |     8    10    16 |
igs | igs 2919 |     7     7    17 |    13    12    38 |     8    10    17 |
jpl | jpl 2907 |     9     8    19 |    12    13    42 |U    9    11    18 |
mit | mit 2962 |     9     8    19 |U   13    14    43 |U    9    12    20 |



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

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

Table 5.1875.0   GPS week: 1875   Day: 0   MJD: 57369.0

CENT| CLK EPO  |        BRUX       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 2976 |     5     7    18 |    11    10    52 |     6     7    14 |
emr | emr 2976 |     5     6    19 |    12    10    41 |    11    15    23 |
esa | esa 2976 |     5     6    13 |    10    11    45 |     8    10    20 |
gfz | gfz 2880 |     5     6    16 |    11    11    45 |     7    11    16 |
grg | grg 2976 |    16    25    60 |    11    12    40 |     7    10    17 |
igr | igr 2976 |     5     7    14 |    10    11    43 |     7    10    17 |
igs | igs 2976 |     5     6    16 |    11    11    40 |     7    11    17 |
jpl | jpl 2880 |     6     8    19 |    11    11    48 |     7    10    15 |
mit | mit 2976 |    12    11    28 |    18    13    54 |     9    16    22 |

Table 5.1875.1   GPS week: 1875   Day: 1   MJD: 57370.0

CENT| CLK EPO  |        BRUX       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 2976 |     4     4    10 |    12    12    33 |     7     7    14 |
emr | emr 2976 |     6     6    20 |    16    14    34 |    11    11    24 |
esa | esa 2976 |     4     4    14 |    11    11    32 |     9    11    22 |
gfz | gfz 2880 |     4     5    12 |    21    15    50 |     9    12    20 |
grg | grg 2976 |     5     9    13 |    11    16    37 |     9    11    17 |
igr | igr 2976 |     4     4    11 |    14    13    35 |     9    11    20 |
igs | igs 2880 |     4     6    13 |    19    13    38 |     9    11    19 |
jpl | jpl 2976 |     6     5    17 |    13    14    37 |     8    12    18 |
mit | mit 2976 |     4     6    13 |    11    13    40 |     8    11    20 |

Table 5.1875.2   GPS week: 1875   Day: 2   MJD: 57371.0

CENT| CLK EPO  |        BRUX       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 2976 |     8     9    14 |    10    12    33 |     7     8    14 |
emr | emr 2976 |     9    10    17 |    15    14    77 |     8    11    23 |
esa | esa 2976 |     9     8    14 |    18    18    73 |     9    11    20 |
gfz | gfz 2784 |     7    10    16 |    18    18    81 |     7    11    20 |
grg | grg 2976 |    19    32    58 |    17    16    58 |     7     8    15 |
igr | igr 2976 |     8     9    13 |    18    19    73 |     7    11    17 |
igs | igs 2880 |     8    10    14 |    19    19    77 |     7    11    17 |
jpl | jpl 2880 |     9     8    15 |    17    20    83 |     8    14    21 |
mit | mit 2976 |     8     9    13 |    13    15    73 |     7    11    17 |

Table 5.1875.3   GPS week: 1875   Day: 3   MJD: 57372.0

CENT| CLK EPO  |        BRUX       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 2975 |     5     6    11 |    11     9    22 |     7     9    13 |
emr | emr 2976 |     7     5    16 |    10     7    20 |     7     9    17 |
esa | esa 2976 |     6     5    13 |    12     9    27 |     7     9    16 |
gfz | gfz 2835 |     6     6    12 |    12     9    29 |     6     8    14 |
grg | grg 2974 |     6     8    14 |    12     8    28 |     7     7    17 |
igr | igr 2929 |     5     5    11 |    11     8    23 |     7     9    13 |
igs | igs 2973 |     5     5    11 |    11     8    23 |     6     8    12 |
jpl | jpl 2880 |     7     5    14 |    12     9    24 |     8    12    15 |
mit | mit 2976 |     7     7    18 |    12    12    25 |     7     8    20 |

Table 5.1875.4   GPS week: 1875   Day: 4   MJD: 57373.0

CENT| CLK EPO  |        BRUX       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 2880 |     7     9    26 |    10     9    27 |    26    30    76 |
emr | emr 2880 |     9    10    29 |    12     8    26 |     9    10    21 |
esa | esa 2880 |     7     8    25 |    10    10    30 |     8    10    21 |
gfz | gfz 2783 |     7     9    28 |    11    10    30 |     8    10    17 |
grg | grg 2880 |    13    26    59 |    10    10    28 |    10    10    22 |
igr | igr 2969 |     7     9    26 |    11    10    28 |     9    11    19 |
igs | igs 2969 |     6     8    26 |    11    10    27 |     8    10    18 |
jpl | jpl 2880 |     9    12    30 |    13    12    30 |    10    12    20 |
mit | mit 2880 |     6     7    26 |    12    10    32 |    18    20    32 |

Table 5.1875.5   GPS week: 1875   Day: 5   MJD: 57374.0

CENT| CLK EPO  |        BRUX       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 2976 |    10     7    15 |    10    14    33 |     7     7    12 |
emr | emr 2880 |    16     8    20 |    10    12    35 |     8     8    22 |
esa | esa 2880 |    14     7    17 |    12    14    39 |     8     7    23 |
gfz | gfz 2880 |    12    13    26 |    11    14    41 |    10     8    22 |
grg | grg 2880 |    17    29    51 |    11    13    41 |    12     9    27 |
igr | igr 2976 |    12     7    15 |    10    14    32 |     8     8    13 |
igs | igs 2879 |    15     7    19 |    11    14    35 |     8     8    16 |
jpl | jpl 2880 |    14     7    18 |    12    14    39 |    10    10    21 |
mit | mit 2976 |    21     9    17 |    11    18    40 |     8     8    14 |

Table 5.1875.6   GPS week: 1875   Day: 6   MJD: 57375.0

CENT| CLK EPO  |        BRUX       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 2976 |     5     6    15 |     7     8    29 |     7     7    13 |
emr | emr 2976 |     7     7    20 |     8     8    27 |     8     9    19 |
esa | esa 2976 |     7     7    18 |     8     9    32 |     8     9    18 |
gfz | gfz 2880 |     6     6    18 |     8    10    30 |     9    11    25 |
grg | grg 2879 |    19    25    56 |     9    11    37 |    15    16    42 |
igr | igr 2976 |     5     6    16 |     7     9    28 |     7     8    14 |
igs | igs 2880 |     7     6    18 |     8    10    30 |     7     9    18 |
jpl | jpl 2976 |     9    10    20 |     8    11    32 |     9    10    20 |
mit | mit 2976 |     6     6    15 |    13    17    37 |     7    10    16 |


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 6.1875   GPS week: 1875   MJD: 57369.500-57375.500

                                                         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 |     -28       8     -12     -34     -6 |      11     24
            |      27      26      66     120      4 |       2
emr   uuuuu |      20      15      67     -38     17 |      13     33
            |      22      32     119      78     11 |       5
esa   uuuuu |      22      42      -2      41      4 |      10     25
            |      17      24      33      54      5 |       2
gfz   uuuuu |       6      43    -140     -21     -2 |      14     27
            |      12      28      99      89      4 |       2
grg   uuuuu |     -21      37     -42     -81     -1 |      46     51
            |      15      13      40      66      6 |       2
igr   xxxxx |      -9      19      31      83      4 |      -4     23
            |      16      16      54      33      3 |       3
irf   xxxxx |       8     -24       1     -31      0 |      -5     24
            |       7      16      42      27      2 |       2
jpl   uuuuu |     -13     -39     -31      51     11 |      12     28
            |      22      55      61      88      6 |       5
mit   uuuuu |       0     -30      25      11     -7 |      18     29
            |      10      25      98      92      4 |       3
ngs   uuuuu |      14     -45     216      83     -9 |       9     25
            |      19      21      89      89      4 |       3
sio   uuuux |     -30      -6    -236    -118      6 |      19     30
            |       9      32      93      65      6 |       2


Table 7.1875.0   GPS week: 1875   Day: 0   MJD: 57369.500

                                                         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 |      -9       0     100      29     -9 |      13     27
emr   uuuuu |      52      63     -95     -85     20 |       9     32
esa   uuuuu |      19      17      10     122     -3 |       9     26
gfz   uuuuu |      -8      10      34    -127      1 |      13     28
grg   uuuuu |     -29      11      20    -108     -7 |      48     53
igr   xxxxx |     -34       5      36      90      6 |      -6     24
irf   xxxxx |      13     -35      22      12     -1 |      -4     27
jpl   uuuuu |     -26      -8     -77     105     12 |       7     26
mit   uuuuu |      10     -16      29     122     -5 |      22     34
ngs   uuuuu |       2     -63     100       9    -11 |      10     27
sio   uuuux |     -26      39    -239     -84     12 |      17     31

Table 7.1875.1   GPS week: 1875   Day: 1   MJD: 57370.500

                                                         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      -3      -8      58     -7 |      13     27
emr   uuuuu |      -2       5     -27     -41      6 |      11     33
esa   uuuuu |      -1      44     -24     -16      3 |      10     26
gfz   uuuuu |      -6      52    -214    -136     -4 |      15     28
grg   uuuuu |      -2      39     -51      23      2 |      47     53
igr   xxxxx |       6      27      34      61      4 |      -4     23
irf   xxxxx |       1     -28      53      -3      0 |      -4     26
jpl   uuuuu |       8       9    -129      51     14 |       9     26
mit   uuuuu |      -1     -50     156      91     -7 |      21     33
ngs   uuuuu |      12     -42     264      25     -6 |      11     26
sio   uuuux |     -36     -29    -151     -54      2 |      20     32

Table 7.1875.2   GPS week: 1875   Day: 2   MJD: 57371.500

                                                         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 |     -11      46    -104      60    -11 |      11     25
emr   uuuuu |       0      31      31    -188     30 |       8     29
esa   uuuuu |      19      27      -5       1     -2 |       9     25
gfz   uuuuu |      29      74     -49      19     -3 |      14     27
grg   uuuuu |      -8      39     -64      -1      9 |      44     49
igr   xxxxx |       0       9       7      50      1 |      -5     22
irf   xxxxx |      11     -51      56     -28     -2 |      -7     25
jpl   uuuuu |       2     -30     -32      25     18 |       8     25
mit   uuuuu |       5     -76     140      79    -13 |      18     29
ngs   uuuuu |     -18     -36     153      43    -16 |       9     25
sio   uuuux |     -20     -39    -267     -68      2 |      18     29

Table 7.1875.3   GPS week: 1875   Day: 3   MJD: 57372.500

                                                         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 |     -35      -9     -19      65     -6 |      10     23
emr   uuuuu |      28     -42     220       1     14 |      11     32
esa   uuuuu |       5      75     -43     -17      4 |       8     24
gfz   uuuuu |       7      75    -254     -38     -3 |      13     26
grg   uuuuu |     -35      51     -40     -99      0 |      45     50
igr   xxxxx |     -14      16     147      93      7 |      -5     23
irf   xxxxx |       2     -11     -28     -40      4 |      -7     24
jpl   uuuuu |      -5     -53       1    -124     13 |      10     28
mit   uuuuu |       1      -6       7       3     -5 |      16     26
ngs   uuuuu |      21     -65     285     177     -7 |       8     24
sio   uuuux |     -26      11    -359    -124      8 |      17     28

Table 7.1875.4   GPS week: 1875   Day: 4   MJD: 57373.500

                                                         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 |     -47      18      38    -244     -5 |      11     24
emr   uuuuu |      45       8     134      40     11 |      15     35
esa   uuuuu |      28      77     -22      44      7 |       9     25
gfz   uuuuu |       5      55    -171     -17      3 |      14     27
grg   uuuuu |      -9      42     -45     -97      3 |      46     51
igr   xxxxx |      10      31      -6     139      5 |      -2     23
irf   xxxxx |       1      -7     -12     -66      0 |      -5     25
jpl   uuuuu |     -56    -133      64     109      2 |      15     31
mit   uuuuu |      -3     -11      17    -119    -10 |      17     27
ngs   uuuuu |      28     -67     161     242     -4 |       9     25
sio   uuuux |     -46      25    -292    -144     -1 |      19     31

Table 7.1875.5   GPS week: 1875   Day: 5   MJD: 57374.500

                                                         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 |     -56      34     -28    -133     -2 |      13     24
emr   uuuuu |      17      30      10      22      5 |      22     35
esa   uuuuu |      34      28      58      81      8 |      14     25
gfz   uuuuu |       9       5    -156     101      0 |      19     26
grg   uuuuu |     -39      44     -10    -134     -1 |      50     54
igr   xxxxx |     -12       0       4     102      1 |       2     20
irf   xxxxx |      11     -11     -38     -40      0 |       0     20
jpl   uuuuu |      -7     -81     -35     145      4 |      20     30
mit   uuuuu |     -20     -23     -76     -88     -2 |      19     27
ngs   uuuuu |      43     -17     356      41     -8 |      12     24
sio   uuuux |     -31      -4    -264    -247     15 |      23     31

Table 7.1875.6   GPS week: 1875   Day: 6   MJD: 57375.500

                                                         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     -30     -61     -74     -1 |       6     21
emr   uuuuu |       1      11     198     -16     31 |      17     33
esa   uuuuu |      48      29      11      76      8 |      10     23
gfz   uuuuu |       6      32    -174      55    -10 |      13     24
grg   uuuuu |     -25      36    -105    -151    -10 |      45     50
igr   xxxxx |     -21      44      -9      49      2 |      -4     22
irf   xxxxx |      18     -24     -44     -50      0 |      -7     23
jpl   uuuuu |      -6      22     -11      50     13 |      15     29
mit   uuuuu |       8     -29    -102     -11    -10 |      13     24
ngs   uuuuu |      13     -24     192      42     -8 |       4     22
sio   uuuux |     -23     -44     -80    -104      6 |      19     29



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