[IGSREPORT-17963] Wk 1554 IGS Final Orbits

Jim Ray IGS.ACC at noaa.gov
Thu Nov 5 05:26:07 PST 2009


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IGS Electronic Report   05 Nov 05:26:30 PST 2009      Message Number 17963
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Author:  AC Coordinator / NOAA NGS

sum-file Version 2.0
Final IGS Orbit Combination - Week 1554   (Oct 18, 2009 - Oct 24, 2009)

Contacts: J. Ray       (jim.ray at noaa.gov),
          J. Griffiths (jake.griffiths at noaa.gov)


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

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

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

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

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

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

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


SOFTWARE:
---------

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

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

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

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

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


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

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

  The resulting x and y earth rotation parameters (ERP) associated with the IGS
ephemeris files and their rates (xrt, yrt) are computed using a weighted average
of all available centres (weights are those from the orbit combination). 
Pole rate combination uses only centres providing estimated pole rates.

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



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

igs1554[0-6].sp3  IGS GPS ephemeris files in SP3 format.
igs1554[0-6].clk  IGS GPS satellite and station clocks in SP3 format.
igs1554[0-6].cls  IGS GPS clock combination summary report.
igs15547.erp      Earth Rotation Parameters (ERP) and their rates as well as
                  Universal Time (UT1-UTC) and Length Of Day (LOD) associated 
                  with IGS ephemerides.
igs15547.sum      Complete report.

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

 1. The centres used in the clock combination are COD, EMR, ESA, GFZ, MIT, and
    JPL. The other centres are excluded because they either provide broadcast
    clocks (NGS) or clock corrections are not provided (SIO).  The clock
    information not used is still compared to combination for completeness.  
    The value of 999999.999999 microseconds, according to the sp3 format 
    convention, is used to signify that no clock solution is available and 
    therefore must not be used.

 2. Rapid (IGR) orbits/clocks are included in the combination for statistics only.
    Starting week 1478, a new solution from CNES/GRGS (GRG) is included for
    evaluation and statistics 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   | 1
                0  |  COD   | 25 JOZ2
                0  |  ESA   | 25
                0  |  GFZ   | 2 4 7 8 9 21 25 HARB NYA1 UNSA
                0  |  GRG   | WTZR
                0  |  JPL   | DGAR
                0  |  MIT   | 24 24 HARB NRC1
                1  |  ALL   | 1 8
                1  |  COD   | 9 25
                1  |  EMR   | KERG WTZR
                1  |  ESA   | 9 25 CEDU SYOG
                1  |  GFZ   | 2 4 21 27 CAS1 DARW MAS1 MATE MIZU NRC1
                1  |  JPL   | 32 DGAR
                1  |  MIT   | 24 21 24 27 HRAO MIZU NRC1
                2  |  COD   | 9 4 9 25 27
                2  |  ESA   | 9 25 27 CEDU KOKB
                2  |  GFZ   | 1 2 4 7 9 11 21 24 27 31 ADE1 AREQ ASPA AUCK CEDU
                2  |  GFZ   | CHAT DAEJ DARW DAV1 GODE HOFN HRAO IISC KARR KERG
                2  |  GFZ   | KIT3 KOKB KOUC LPGS MAC1 MAW1 MBAR METS MIZU NRMD
                2  |  GFZ   | NYA1 PERT PIE1 PIMO PRE1 SANT SFER SHAO THTI TOW2
                2  |  GFZ   | TSKB TWTF UNSA YAR2 YKRO
                2  |  GRG   | COCO KHAJ ONSA
                2  |  JPL   | 4 21 32 DGAR
                2  |  MIT   | 24 24
                2  |  NGS   | 1 8
                3  |  COD   | 4 9 27 4 9 24 25 27
                3  |  EMR   | 2 WTZR
                3  |  ESA   | 4 9 25 27
                3  |  GFZ   | 2 5 7 9 11 22 23 24 27 ADE1 AMC2 AREQ BAKO BRFT BUE1
                3  |  GFZ   | CEDU COCO CONZ DARW FLIN GODE GRAZ GUAM GUAT HOB2
                3  |  GFZ   | KERG KIRU LPGS MAS1 MAW1 MBAR MDO1 NANO NRC1 NRMD
                3  |  GFZ   | PDEL PERT PIMO PRDS REUN RIOP SFER SHAO STJO TIDB
                3  |  GFZ   | TLSE TOW2 WES2 WHIT WSRT WTZR YAR2 YELL
                3  |  GRG   | ONSA
                3  |  JPL   | 2 32
                3  |  MIT   | 24 SYDN
                4  |  ALL   | 1
                4  |  COD   | 4 CHUR DAEJ CHUR DAEJ
                4  |  ESA   | 4 25 ALGO UNSA
                4  |  GFZ   | 2 4 9 11 21 24 25 27 31 ASPA BOR1 BRFT CHPI CONZ
                4  |  GFZ   | FLIN HARB HOB2 HOLM HRM1 IISC MBAR MCM4 METS ONSA
                4  |  GFZ   | PDEL ZECK ZIMM
                4  |  GRG   | KHAJ ONSA
                4  |  JPL   | 32 DGAR
                4  |  MIT   | 24 24 CHUR GODE IENG
                5  |  ALL   | 1
                5  |  COD   | 4 24 4 9 25 CHUR CHUR
                5  |  EMR   | WTZR
                5  |  ESA   | 4 9 25 DARW YELL
                5  |  GFZ   | 2 4 7 8 9 11 15 21 24 27 28 31 AMC2 AREQ ASPA AUCK
                5  |  GFZ   | BOR1 BRFT CAS1 CHAT CHPI COCO CRO1 DARW DAV1 DGAR
                5  |  GFZ   | EIL1 HARB HOFN HOLM HRM1 HYDE IRKT KIRU KIT3 MAC1
                5  |  GFZ   | MADR MAS1 MAW1 MDO1 METS MIZU NRC1 NYA1 NYAL ONSA
                5  |  GFZ   | PIE1 PIMO PRDS RAMO RIOP SANT SYOG THTI TRO1 TSKB
                5  |  GFZ   | TWTF VILL WHIT WSRT WTZR YELL YKRO
                5  |  GRG   | KHAJ ONSA
                5  |  JPL   | 2 9 32 DGAR YELL
                5  |  MIT   | 8 24 27 DAV1 HARB MIZU TWTF
                6  |  ALL   | 1
                6  |  COD   | 9 4 9 HYDE
                6  |  EMR   | 4
                6  |  ESA   | 4 9 UNSA
                6  |  GFZ   | 9 ABPO ALGO ALRT DAEJ KIT3 MAS1 MBAR METS NRC1 OHI2
                6  |  GFZ   | OUS2 RAMO REUN SFER TSKB VILL WSRT ZECK
                6  |  GRG   | ONSA TLSE
                6  |  JPL   | 32
                6  |  MIT   | 24 24 HYDE

 5. The following orbit solutions were excluded from the combination because 
    they were biasing the weighted average (generally indicated by long arc RMS).
    They were still used for statistics computation.
    
               Day | Centre | PRN list
               ----+--------+---------------
                4  |  NGS   |  24

 6. Starting on 5-Nov-2006 (GPS Week 1400, day 0, MJD 54044) 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.

 7. Small rotations were applied to the all AC orbit and ERP values in order
    to align them to the IGS05. These rotations were estimated in the process
    of the IGS SINEX combination, performed at NRCan by Remi Ferland, are based 
    on the common stations between the individual AC SINEX solutions and the 
    IGS05.snx SINEX. 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 |   [mm]   [mm]   [mm]   [uas]  [uas]  [uas]   [ppb]
     -------+---------------------------------------------------
       COD  |     .5     .7    1.6      -7     -4    -17    -.26
       EMR  |   -1.1   -2.3    7.8      73     -9     45     .33
       ESA  |    4.5    6.6   11.7     109      3     43    -.02
       GFZ  |     .0     .8     .9      25    -13      5    -.18
       GRG  |    5.9    2.4    5.7      -9     -6      9    -.06
       JPL  |     .3    8.4   12.1       9    -19      3     .40
       MIT  |    4.9    3.0    9.2       8      5    -18    -.26
       NGS  |    5.8    3.1   12.1      63     -7    -29    -.30
       SIO  |   12.1    5.3   -8.7     106   -199      9     .17


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

 9. Starting on 27-Feb-2000 (GPS Week 1051-0; MJD 51601) the IGS final products
    are aligned to the IGS reference frame products (station coordinates and
    ERPs as generated by NRCan. For more information see IGSMAIL #2750.
    Because of this  change in alignment Table 2 has been enhanced with one 
    additional line per AC. This additional line shows the X- and Y-rotations 
    which were applied to each of the AC orbits prior to the orbit combination. 
    These rotations are based on the difference between the individual AC ERP 
    estimates and the IGS reference frame ERP product. The total rotation of
    the individual AC orbits w.r.t. the IGS combined orbit is the sum of the
    values in the two lines of Table 2 plus the reference frame rotation.

10. Starting on 5-Nov-2006 (GPS Week 1400, day 0, MJD 54044) the absolute antenna
    model is introduced (IGSMAIL #5272). The antenna phase center offsets and
    phase center variations are given in the file:
        ftp://igscb.jpl.nasa.gov/pub/station/general/igs05.atx

    
ORBIT COMBINATION AND EVALUATION STATISTICS:                                    
--------------------------------------------                                    
      
Most combination statistics are with respect to the  combined orbits and
consist of five parts. The first, Table 1, summarizes all statistics for
the week.  It contains  means and standard deviations  over the week  of
satellite ephemeris and  clock correction transformation parameters  for
each centre (table 1.1554.a). It also displays the computed satellite
position sigmas for the combined orbits (table 1.1554.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 2.1554.[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 3.1554.[0-6]). The first type of satellite RMS is
based on orbit combination and the second RMS type is a result of the 7-day
arc evaluation of each centre ephemerides. The fourth part, Table 4, is a
weekly summary of the daily precise navigation summaries for centres
providing both orbit and clock solutions.  It contains weekly station RMS
w.r.t. the initial coordinates for the Latitude, Longitude and Height 
components for up to three IGS stations (table 4.1307). The fifth and final
part, Table 5, is similar to Table 4 and contains daily precise navigation
statistics (tables 5.1554.0-6).

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

             
Table 1: Week 1554 summary.                       (Oct 18, 2009 - Oct 24, 2009)

Table 1.1554.a   GPS week: 1554   MJD: 55122.000-55128.000

         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  224|    1     0     0    93   -25   -14  -.20    8    7 |    -194     683     26     79
        |    0     0     0    13    14    17   .02           |     426     749
emr   89|   -1    -1     3   -57   -38    27   .59   19   19 |     232     713     32     98
        |    2     1     0    29    13    15   .04           |    1659     628
esa  126|   -1    -1    -1  -100   -29   -29   .31   10   10 |    -323     458     26    127
        |    0     0     1    17    24    24   .02           |     985    1568
gfz  186|    0     1    -1    31   -25   -19  -.17   12   12 |     -47     222     40    132
        |    0     0     1    50    58     9   .05           |     184    1313
grg  112|    3     3     0    77   -47    24  1.06   40   37 | 1429529    3641     89    233
        |    3     2     2    26    24    39   .03           | 3779222    4732
igr  n/a|    0     0     0    78   -28   -20   .04    5    5 |   -2773    1305     23     75
        |    0     0     0    15    14    25   .03           |    2677     701
jpl  119|    0     0     1    52     2    57   .60   20   19 |    1801     476     25     99
        |    1     1     1    10    15    11   .05           |     871     663
mit  258|    0     0    -2    77   -40    21  -.28   12   11 |  -13058    1978     29    130
        |    0     1     1    13    24    13   .02           |    3441    4597
ngs  212|    0     0     2   -60   -17     5  -.20   11    8 | -111267   32579   2046   4172
        |    0     0     1    26    29    13   .04           |  209441   47587
sio  252|    2     2    -2  -159   357    15  -.03   20   19 |     ---     ---    ---    ---
        |    0     0     1    23    26    12   .03           |     ---     ---


Table 1.1554.b   GPS week : 1554   MJD: 55122.000-55128.000   

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



Table 2: Daily transformation of each centre to the combined IGS orbit and
         clocks for each day of the week. The transformation displayed is the
         sum of a priori and estimated transformations.
         WRMS - RMS weighted by the centres SP3 header accuracy codes.
         STA  - Number of stations in the daily solutions.
   
Table 2.1554.0   GPS week: 1554   Day: 0   MJD: 55122.000                            

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  224|    0     0     0    76    -9   -38  -.19    8    6 |     -86     147     29     90
        |                    -19   -14                       |
emr   89|   -1    -3     1   -59   -46    50   .62   19   19 |   -2441    1283     14     72
        |                    -36    26                       |
esa  126|   -1    -1    -2  -113   -20    -1   .34   13   12 |    -134     152     28    128
        |                     36   -24                       |
gfz  186|    0     2    -1    81   -55   -34  -.18   11   11 |      10     258     34    104
        |                     -6   -26                       |
grg  112|    1     0     0    62   -30   -19  1.04   36   35 |    3647   11698     77    223
        |                    -19    38                       |
igr  n/a|    0     0     1    57   -22    15   .07    5    5 |   -7236    2213     21     65
        |                    -47   -39                       |
jpl  119|    0    -1     0    43    11    48   .67   20   19 |     226    1402     20    115
        |                    -15     0                       |
mit  258|    0    -2     1    74   -63    39  -.25   15   14 |   -5515   -1098     32    204
        |                    -24   -16                       |
ngs  212|    0     0     2   -79    -5   -14  -.16   10    7 |   11952    5802   2109   4185
        |                    -16   -18                       |
sio  252|    2     2     0  -191   314    34  -.01   20   19 |     ---     ---    ---    ---
        |                     72  -156                       |

Table 2.1554.1   GPS week: 1554   Day: 1   MJD: 55123.000                            

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  224|    1     0     0    78   -29   -12  -.22    8    7 |    -486     506     21     68
        |                    -19    40                       |
emr   89|   -3    -2     2   -47   -24    43   .53   19   19 |    -907    1173     19     82
        |                    -34    -9                       |
esa  126|    0    -1     0   -86   -51   -26   .27    8    7 |    1150   -1470     22    127
        |                     32    37                       |
gfz  186|    0     2    -1    81    11   -25  -.24   12   12 |    -141     628     25    101
        |                     23   -31                       |
grg  112|    4     0    -2    65   -23    98  1.05   38   35 |    2000    8284     99    231
        |                    -13    42                       |
igr  n/a|    0     0     0    91   -40     0   .00    5    5 |   -4734    1954     21     59
        |                    -95    -9                       |
jpl  119|    0     1     0    68     7    53   .62   19   17 |    1781     904     20     89
        |                      1    19                       |
mit  258|   -1     0    -1    82    -7    14  -.28   14   13 |  -12922   11871     21    109
        |                    -18   -20                       |
ngs  212|    0    -1     3   -72   -38     7  -.25   11    7 |   14383    1491   1812   4023
        |                     -5     5                       |
sio  252|    2     3    -3  -171   381     6  -.02   20   21 |     ---     ---    ---    ---
        |                     59  -185                       |

Table 2.1554.2   GPS week: 1554   Day: 2   MJD: 55124.000                            

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  224|    1     1     0    92   -17   -40  -.23    7    7 |    -270    1829     15     80
        |                     -2    -1                       |
emr   89|   -5    -2     4   -34   -18     8   .60   18   18 |     -24     160     22     86
        |                    -49     8                       |
esa  126|    0    -2    -2  -109   -28     7   .30    9    9 |    -895     956     20    123
        |                     59     9                       |
gfz  186|    0     1     0    34   -56    -6  -.24   11   11 |    -230     521     36    134
        |                     22    -7                       |
grg  112|    3     3     0    73   -59    45  1.02   38   34 | 9999999    2599     82    214
        |                    -49     6                       |
igr  n/a|    0     0     0    97   -16   -48   .04    5    5 |   -3010     534     19     71
        |                    -99   -39                       |
jpl  119|    0     0     2    62    25    46   .62   19   18 |    2414    -402     17     88
        |                     -7    -5                       |
mit  258|    0     0    -1    70   -59    28  -.28   12   10 |  -15018    2693     24    121
        |                    -17    -7                       |
ngs  212|    0     0     0   -42    -5    -3  -.17    9    7 |   12393    2330   1954   4256
        |                    -38    -1                       |
sio  252|    2     3    -1  -155   339    17  -.01   19   19 |     ---     ---    ---    ---
        |                     49  -173                       |

Table 2.1554.3   GPS week: 1554   Day: 3   MJD: 55125.000                            

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  224|    1     0     1   112   -34    -3  -.20    7    7 |     547     319     21     64
        |                    -40     3                       |
emr   89|    0    -3     3   -29   -49    19   .59   20   20 |    -262     938     55    134
        |                    -17    32                       |
esa  126|   -1    -1    -1  -119    -9   -59   .32    9    9 |     852   -1477     27    128
        |                     85    17                       |
gfz  186|    0     1    -1   -51    29   -24  -.18   11   11 |      46    1876     45    132
        |                      9   -35                       |
grg  112|    2     7    -2    74   -52    26  1.04   41   39 |     -52    3586     92    239
        |                    -75    38                       |
igr  n/a|    0     0     0    82   -28   -28   .06    5    4 |   -3048    1043     24     81
        |                    -18   -52                       |
jpl  119|    0     0     0    47    -5    82   .57   19   18 |    1389      89     38    110
        |                     35    31                       |
mit  258|    0     0    -3    59   -50    38  -.27   11    9 |  -13917    -678     28    105
        |                    -19    -3                       |
ngs  212|    0     0     2   -14   -35    -1  -.20   10    8 |    8032    8908   1927   3807
        |                    -85    26                       |
sio  252|    2     2    -2  -167   357    26   .00   20   22 |     ---     ---    ---    ---
        |                     45  -190                       |

Table 2.1554.4   GPS week: 1554   Day: 4   MJD: 55126.000                            

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  224|    0     0     1    91   -16     1  -.20    8    7 |    -422    1190     38     85
        |                    -11    16                       |
emr   89|   -3     1     2   -77   -57    13   .59   20   20 |    1018    1263     27     78
        |                     21    49                       |
esa  126|    0     0    -4   -99   -71   -44   .33    9    9 |    -852    1721     28    124
        |                     62    36                       |
gfz  186|    0     0     0    -3   -19   -15  -.14   13   13 |    -211     585     48    140
        |                     -9   -33                       |
grg  112|    2     4     3    56   -52    16  1.10   42   40 |     -21     564     88    239
        |                    -19    53                       |
igr  n/a|   -1     0     0    63   -16     0   .02    7    6 |   -1856    1610     26     81
        |                    -30   -27                       |
jpl  119|    0    -2     1    39     7    59   .54   21   21 |    1687     979     24     86
        |                     17    -2                       |
mit  258|    0     0    -2   104   -32     9  -.28   11    9 |  -13802   -1266     36    116
        |                     -8    -6                       |
ngs  212|    0     0     2   -56   -18    23  -.18   11    9 | -415619   99616   2177   4020
        |                     -1   -20                       |
sio  252|    2     1    -2  -115   374    11  -.06   20   19 |     ---     ---    ---    ---
        |                     32  -192                       |

Table 2.1554.5   GPS week: 1554   Day: 5   MJD: 55127.000                            

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  224|    1     1     1   108   -17    -5  -.22    8    7 |    -744    1167     22     78
        |                    -56   -12                       |
emr   89|    0    -2     3   -40   -35    30   .57   21   21 |    2190    -358     54    125
        |                    -13    43                       |
esa  126|   -1     0    -1  -107    -1   -42   .31    9    9 |    -944     558     27    140
        |                     78    35                       |
gfz  186|    0     0    -1     6  -125   -18  -.16   13   13 |     299   -2465     45    169
        |                     -6   -45                       |
grg  112|    0     5     3   136   -23    16  1.05   40   36 |     233      89     85    233
        |                    -48   -47                       |
igr  n/a|   -1     0     0    89   -19   -31   .02    5    5 |     -43     339     25     87
        |                    -62    16                       |
jpl  119|    0    -1     3    49    -7    58   .53   20   20 |    2992    -174     37    114
        |                     12    42                       |
mit  258|    0     1    -2    80   -60    16  -.30   11   10 |  -14607    1380     25    123
        |                    -28   -10                       |
ngs  212|   -1     0     4   -62    33    10  -.25   16   10 | -420058  104620   2153   4458
        |                     37    -6                       |
sio  252|    2     3    -4  -160   346    13  -.09   20   19 |     ---     ---    ---    ---
        |                     32  -187                       |

Table 2.1554.6   GPS week: 1554   Day: 6   MJD: 55128.000                            

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  224|    0     0     2    92   -51    -4  -.16    9    8 |      98    -371     38     88
        |                    -13    46                       |
emr   89|    0    -1     3  -112   -35    25   .65   20   20 |    2054     538     33    109
        |                     40     2                       |
esa  126|    0    -2     0   -70   -21   -38   .30   11   11 |   -1439    2770     31    123
        |                     31   -21                       |
gfz  186|    0     1    -3    74    39    -9  -.09   13   13 |    -102     152     52    144
        |                      7   -30                       |
grg  112|   10     2     0    72   -91    -9  1.12   44   39 |     899   -1331    102    254
        |                     45    96                       |
igr  n/a|   -1     0     0    70   -56   -50   .10    5    5 |     516    1443     25     82
        |                    -35    -5                       |
jpl  119|   -2     1     0    58   -21    54   .63   22   22 |    2119     536     24     91
        |                    -15   -98                       |
mit  258|    0     2    -4    70    -9     6  -.28   10    9 |  -15627     947     37    136
        |                    -20   -11                       |
ngs  212|    0    -1     3   -95   -55    16  -.18   10    8 |   10045    5287   2195   4458
        |                     11    57                       |
sio  252|    2     2    -4  -152   389    -4  -.06   21   18 |     ---     ---    ---    ---
        |                     36  -178                       |

       
       
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 3.1554.0   GPS week: 1554   Day: 0   MJD: 55122.000                            

        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
------+--------------------------------------------------------+---------------------------------------------------------
  X1  |   13  ---  ---   14  ---   12  ---   24   18  ---   10 |    26  ---  ---   32  ---   34  ---   32   32  ---    28
   2E |    6   16   12   12   27    7   24   20   11   19    5 |    53   57   60   59   62   55   56   52   57   52    55
   3  |    5   14   10    8   22    3   10   12    6   17    3 |    16   22   24   25   28   20   26   16   18   27    19
   4E |   16   23   17   11   43    8   17   21   19   14    6 |    86   91   95   88   91   88   85   83   90   87    88
   5  |    5   24   10    9   34    4   22   12    8   24    5 |    13   33   20   19   42   18   31   19   15   17    16
   6  |    4   12    8    7   19    3   11   13    8   17    3 |    21   27   28   26   36   25   31   20   22   33    23
   7E |    8   20   14   11   38    5   17   13   10   16    4 |    32   38   27   31   35   31   32   31   35   33    32
  X8  |   23  ---  ---   30   59   44  ---   31  ---  ---   19 |    36  ---  ---   44  109   48  ---   42  ---  ---    35
   9E |    9   21   11   17   48    6   20   23   13   17    6 |    61   62   63   64   68   61   62   66   66   60    61
  10  |    6   12    9    8   32    4    8   10   12   12    3 |    20   26   24   20   22   20   24   24   23   18    21
  11E |    9   17   11   16   32    4   15   13    8   15    4 |    44   46   42   46   64   43   45   47   44   41    43
  12  |    5   15   10   13   49    8   18   24   11   25    5 |    18   25   25   23   36   20   23   24   24   18    21
  13  |    6   18   13    9   42    4   21   11    9   18    4 |    15   29   22   20   41   18   27   19   20   20    17
  14  |    4   16   12   12   27    5   25   11    8   19    4 |    17   30   26   24   38   20   29   24   22   21    21
  15  |    9   20   14    7   48    6   23   17    9   23    5 |    20   29   25   21   38   19   27   22   19   26    19
  16  |    8   20   12   13   51    6   20   18    7   31    5 |    16   26   22   21   35   17   24   17   13   21    16
  17  |    8   22   13   16   41    6   23   12    9   26    5 |    16   40   26   21   53   23   38   20   24   22    22
  18  |    6   22   12   14  ---    4   26   10    8   19    5 |    15   33   24   22  ---   20   33   22   21   27    20
  19  |    6   22   13   10   33    5   24   11    8   24    5 |    20   38   19   15   45   21   38   18   22   19    20
  20  |    7   22   12   10   30    6   23    8    8   20    5 |    17   32   24   22   36   21   28   20   20   20    19
  21E |    8   26   20   10   26    6   26    7    8   10    5 |    41   51   45   42   59   44   48   44   43   46    43
  22  |    7   20   12   10   27    5   24   18   10   19    5 |    19   35   29   25   42   23   34   24   25   25    23
  23  |    5   22   16   12   39    3   24   11    9   18    5 |    14   27   22   22   34   17   28   18   19   18    17
 X24E |   17   28   16   25  ---   18  ---   20   40  ---   11 |    73   78   76   66  ---   73  ---   72   73  ---    70
  25E |   11   20   12   11  ---    4   14   20   10   18    5 |    18   27   20   20  ---   18   24   26   23   23    20
  26  |    6   13   10    8   20    5   13    9    7   16    3 |    14   23   18   13   24   14   20   18   16   22    15
  27E |   11   19   11   14   65    3   19   20   14   14    5 |    35   40   39   40   43   37   32   43   41   35    37
  28  |    8   16   14   13   24    4   18    9    9   31    5 |    27   35   36   35   41   29   32   28   30   28    30
  29  |    6   19   14    8   41    6   22   10   10   22    5 |    18   31   20   16   40   19   33   21   17   25    18
  30  |    5   11    8   10   25    5   15   13    8   19    4 |    31   29   33   33   28   29   14   31   29   20    30
  31E |    8   17   12   11   29    4   19   16    6   15    4 |    16   26   18   14   38   15   25   15   14   21    16
  32  |    6   22   15    8   18    5   15    9    6   18    4 |    15   23   23   20   26   18   19   17   17   18    16
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |    8   19   13   11   36    5   20   15   10   20      |T   27   36   32   30   44   29   33   30   30   29    29
 WRMS |    6   19   12   11   35    5   19   14    7   19      |NE  18   29   24   22   36   21   27   21   21   22    20
 MEDI |    7   20   12   11   32    5   20   13    9   18      |MD  19   31   25   23   38   21   31   24   23   23    21

Table 3.1554.1   GPS week: 1554   Day: 1   MJD: 55123.000                            

        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
------+--------------------------------------------------------+---------------------------------------------------------
  X1  |   15  ---  ---   18  ---   20  ---   22   19  ---   10 |    20  ---  ---   23  ---   24  ---   24   26  ---    19
   2E |    7   16    8    9   27    5   26   17   13   16    5 |    42   38   42   45   34   42   41   48   46   42    40
   3  |    7   13    6   10   22    5   11   11   10   17    3 |    12   18   18   18   26   15   24   15   14   22    13
   4E |   13   19    9   12   56    7   17   15   19   25    5 |    66   62   63   69   75   70   60   64   72   73    64
   5  |    6   22    8   14   36    5   24   11    9   23    5 |    11   32   15   18   41   13   31   14   15   12    13
   6  |    7   13    7    9   20    4   11   10    9   16    3 |    13   20   23   18   35   17   27   17   16   25    16
   7E |    8   23    6   17   46    5   21   14   12   13    5 |    27   33   24   31   45   26   32   28   30   34    27
  X8  |   28  ---  ---   30  383   32  ---   28  ---  ---   20 |    42  ---  ---   38  303   50  ---   37  ---  ---    35
   9E |    8   20    8   11   48    7   16   21   21   19    5 |    66   65   64   67   73   65   62   68   65   68    65
  10  |    6    8    5    8   29    5    7   11    8   12    3 |    17   21   20   20   25   16   22   22   20   17    18
  11E |    9   15    6   12   40    5   16   13   12   12    4 |    25   36   29   30   54   28   34   32   33   31    29
  12  |    6   14    7   10   45    4   15   19   12   26    5 |    18   24   19   19   33   18   26   16   22   17    18
  13  |    7   18    9   10   41    5   19   12    8   18    4 |    12   27   15   17   39   14   23   15   19   18    13
  14  |    6   18    7   11   24    4   24   11    9   18    4 |    17   30   21   23   36   20   31   20   18   20    19
  15  |   10   19   11    8   47    6   21   17   18   26    5 |    16   25   21   21   34   16   26   16   22   23    15
  16  |    7   19    6   12   54    4   17   13    8   30    5 |    12   22   17   18   33   14   24   18   10   20    13
  17  |   10   20   10   13   40    6   19   13    8   26    5 |    10   28   19   15   41   14   26   12   15   17    12
  18  |    6   21    7   15  ---    5   23   12    8   19    5 |    13   30   19   19  ---   15   31   17   17   20    16
  19  |    8   22    7   12   37    6   25   12    8   25    5 |    15   31   14   12   38   15   35   15   16   13    14
  20  |    6   19    7   10   38    5   20   11    9   19    4 |    13   26   17   15   35   14   22   14   15   16    13
  21E |    6   21    8   10   44    5   24   10    9   10    4 |    47   50   45   47   69   46   50   47   49   46    46
  22  |    6   19    8    9   23    5   22   14   10   18    4 |    15   31   22   20   40   18   30   21   19   21    19
  23  |    6   24    9   12   39    4   25   12    6   20    5 |    13   29   17   18   36   16   27   17   16   18    14
 X24E |   16   27   16   33  ---   20  ---   20   45  ---   12 |    73   85   77   77  ---   76  ---   72   72  ---    73
  25E |   11   16    6   16  ---    6   16   19   11   17    5 |    11   23   17   22  ---   14   24   23   21   21    16
  26  |    7   18    8    7   23    4   11   10    6   17    3 |    14   27   18   15   24   15   19   17   13   18    15
  27E |   10   19    8   19   56    7   19   21   20   17    6 |    42   45   43   46   56   43   31   46   44   44    42
  28  |    7   17    8   11   32    8   17   10    7   33    5 |    20   27   22   25   27   20   26   20   22   23    21
  29  |    9   21    9   14   35    7   21   11   11   23    5 |    14   26   23   20   36   16   28   18   11   20    15
  30  |    6   11    5   11   28    4   11   11    7   19    3 |    23   19   22   26   18   21   16   25   22   18    21
  31E |    6   24    8   21   38    5   15   14   11   21    5 |    15   30   20   27   45   18   25   18   17   21    17
  32  |    6   19    7    7   15    4   12   10    7   17    3 |    18   25   23   20   25   20   25   23   22   25    20
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |    8   19    8   12   38    5   19   14   11   20      |T   24   32   26   28   49   25   30   26   26   26    24
 WRMS |    7   19    7   12   35    5   17   13    7   21      |NE  15   25   19   19   32   16   25   17   17   19    16
 MEDI |    7   19    8   11   38    5   19   12    9   19      |MD  16   28   21   20   36   18   27   20   20   21    18

Table 3.1554.2   GPS week: 1554   Day: 2   MJD: 55124.000                            

        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
------+--------------------------------------------------------+---------------------------------------------------------
  X1  |   12  ---  ---   15  ---   19  ---   16   22  ---    9 |    22  ---  ---   26  ---   31  ---   23   30  ---    23
   2E |    8   14    8   10   20    4   26   10    8   16    4 |    30   36   29   32   42   33   36   35   33   36    32
   3  |    6   15    8    9   22    5   12   10    8   17    3 |    14   21   20   18   26   15   22   17   14   22    14
   4E |    8   21   13   13   70    7   20   29   18   18    6 |    67   63   65   65   63   68   61   61   67   63    63
   5  |    5   24    9   13   37    5   23   10    9   24    5 |    14   32   16   19   39   15   30   16   13   14    13
   6  |    4   14    8   10   23    4   13    7    6   15    3 |    17   22   21   21   30   18   23   20   18   25    17
   7E |    8   24   11   12   33    5   20    9    8   13    4 |    21   31   22   22   34   20   26   19   18   17    18
  X8  |   11   39   11   20   29    9  ---   18   43  ---   11 |    34   46   32   37   86   35  ---   34   54  ---    37
   9E |    9   16    8   13   61    5   16   17   15   18    5 |    40   41   40   42   49   39   37   39   41   41    40
  10  |    6    9    6    7   20    6    8   11    7   14    3 |    17   21   20   21   23   17   20   19   17   12    16
  11E |    9   14    6    9   50    3   15   10    8   11    3 |    26   33   30   32   52   28   31   30   30   25    27
  12  |    7   13    9   15   47    3   15   12    8   25    4 |    16   24   22   24   30   19   24   16   21   17    19
  13  |    6   18    6    8   37    4   21    9   10   16    4 |    16   26   18   18   36   15   25   17   18   17    15
  14  |    5   18    9   13   29    3   24    8   10   19    4 |    15   27   18   21   33   16   27   16   19   14    17
  15  |    7   20    8   12   39    5   22   11    9   24    5 |    17   29   17   20   35   16   26   15   15   23    15
  16  |    8   18    8   12   50    3   19   11   10   30    5 |    13   23   18   18   32   13   23   14   16   16    13
  17  |    9   22   11   14   37    9   21   10    9   26    5 |    12   30   14   15   39   14   29   14   16   19    13
  18  |    6   18    9   11   20    4   24    8    8   18    4 |    14   27   18   17   30   15   30   17   18   19    16
  19  |    6   23    7    9   39    5   24    7    7   23    4 |    16   35   16   13   38   17   36   14   18   11    17
  20  |    5   18    7   10   27    4   20   10    8   18    4 |    15   26   22   19   32   18   24   15   18   14    16
  21E |    8   19   10    9   29    4   23   12    7    9    4 |    30   35   31   33   44   27   36   31   26   26    27
  22  |    4   16    9   12   21    5   23    8    8   15    4 |    15   27   20   20   36   15   28   15   18   16    16
  23  |    6   22    9   14   33    5   22   11    8   19    5 |    13   30   23   21   33   15   28   13   16   14    15
 X24E |   21   29   29   45  ---   19  ---   22   54  ---   15 |    55   64   55   77  ---   67  ---   63   80  ---    58
  25E |   10   17    8   11  ---    4   14   15   13   14    4 |    13   22   19   16  ---   13   23   19   18   17    15
  26  |    7   12    6    7   21    4   13    8    8   17    3 |    13   22   15   13   22   14   18   16   15   16    14
  27E |   10   17    7   14   64    5   17   20   15   14    5 |    29   31   30   32   37   29   31   30   31   29    30
  28  |   10   15   11   11   39    7   21    8    9   30    5 |    22   26   28   28   29   22   27   23   26   25    23
  29  |    8   19   13   12   45    5   21    9   11   24    5 |    18   28   21   19   34   16   30   18   16   22    16
  30  |    6   10    7    8   30    5   11    8    7   18    3 |    24   22   25   25   25   23   14   27   19   20    22
  31E |    6   19    8   12   35    4   16   15    7   12    4 |    14   26   18   18   41   11   23   15   15   17    14
  32  |    6   16   10    9   24    3   14   11    6   18    4 |    18   23   28   25   27   20   20   17   19   19    19
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |    7   18    9   11   38    5   19   12    9   19      |T   21   30   24   25   37   22   27   23   24   21    22
 WRMS |    7   18    9   11   34    5   18   10    7   19      |NE  16   26   20   20   31   17   25   17   18   17    16
 MEDI |    7   18    8   12   33    5   20   10    8   18      |MD  17   27   21   21   34   17   27   17   18   19    17

Table 3.1554.3   GPS week: 1554   Day: 3   MJD: 55125.000                            

        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
------+--------------------------------------------------------+---------------------------------------------------------
  X1  |   11  ---  ---   18  ---   19  ---   11   17  ---    8 |    23  ---  ---   34  ---   29  ---   25   29  ---    25
   2E |    7   24    8   13   41    4   27   11   11   17    5 |    18   29   19   23   46   18   27   22   20   20    18
   3  |    5   15    8   10   28    3    9    7    7   16    3 |    14   22   21   19   25   18   24   17   14   22    15
   4E |   10   19   15   14   96   12   18   29   17   22    7 |    43   42   45   46   41   42   39   45   49   31    41
   5  |    5   27   11   15   30    4   25    9    9   24    5 |    13   33   19   23   41   14   30   15   18   14    15
   6  |    4   13    7    7   26    3    9    6    8   15    3 |    17   23   24   20   36   21   26   21   17   26    18
   7E |   10   25    9   10   46    4   19   10    9   12    4 |    32   39   36   34   52   33   39   33   32   36    33
  X8  |   11   20   16   18   44   11  ---    9   21  ---    7 |    27   38   36   43  106   32  ---   32   42  ---    33
   9E |   10   20    9   11   69    4   17   17   17   20    5 |    70   71   72   74   79   69   70   71   67   68    69
  10  |    5   12    9   10   25    4    9   10    8   16    3 |    20   22   23   21   29   17   19   22   22   15    19
  11E |    8   17   10   22   47    3   14    9   11   15    5 |    40   47   44   50   62   42   43   42   42   39    42
  12  |    5   16   10    9   55    7   17   10    9   26    4 |    17   25   28   21   36   19   26   18   19   17    19
  13  |    8   21    8    6   45    3   25   10    7   15    4 |    14   27   23   17   38   17   28   17   20   15    16
  14  |    6   15   11   13   26    4   20    9    9   19    4 |    18   27   24   27   38   19   27   19   24   18    20
  15  |    8   20   11    9   36    5   23   11    9   27    5 |    16   28   22   21   34   17   27   17   20   27    17
  16  |    6   19    8    7   45    5   20    7    9   29    4 |    13   22   21   17   34   16   25   14    9   12    13
  17  |    8   21    9   10   42    5   22   11   11   27    5 |    14   30   14   16   48   16   29   17   17   21    15
  18  |    7   24   11   13   24    4   22    7    9   19    5 |    14   28   23   20   30   15   27   16   16   19    16
  19  |    6   24    9   10   38    5   22    7    8   23    4 |    19   34   19   13   45   18   34   15   18   13    17
  20  |    8   21    8    9   32    5   22   10    8   16    4 |    15   27   20   16   36   18   25   15   18   12    15
  21E |    8   24   10    9   31    4   24   21    5   11    5 |    60   60   63   59   82   59   60   64   57   59    59
  22  |    5   19   11   11   26    5   21    6    9   17    4 |    17   30   27   21   40   19   28   18   21   17    19
  23  |    6   26   11   12   33    2   26    8    8   19    5 |    16   31   26   22   35   19   30   17   17   18    18
 X24E |   19   28   33   36  ---   12  ---   11   36  ---   12 |    73   82   91   68  ---   73  ---   75   67  ---    75
  25E |   10   17    8   14  ---    3   14   13   12   14    4 |    13   23   22   21  ---   15   24   21   18   18    16
  26  |    6   13    6    6   24    3   10    7    8   17    3 |    14   21   16   17   28   13   17   15   20   14    15
 X27E |   11   22    8   13   68    4  ---   16   16   14    5 |    38   44   41   44   49   37  ---   41   38   38    38
  28  |    8   17    9   12   47    6   19    8   10   30    5 |    21   26   24   25   28   20   25   22   22   26    21
  29  |    7   20    8   10   32    4   21    9    9   24    4 |    19   33   22   17   35   21   33   22   18   24    18
  30  |    6   14    4    8   27    6   10    8    6   19    3 |    24   24   29   29   23   25   17   29   25   15    25
  31E |    6   26    8    9   35    4   16   11    9   14    4 |    10   27   16   13   45   12   21   12   12   13    11
  32  |    5   17   10   10   25    2   15   10   10   17    4 |    21   21   23   22   23   20   23   20   17   20    18
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |    7   20    9   11   41    5   19   11   10   20      |T   24   33   30   28   42   25   30   26   26   23    25
 WRMS |    7   20    9   11   39    4   18    9    8   22      |NE  17   26   22   20   34   18   26   18   19   18    17
 MEDI |    7   20    9   10   35    4   19   10    9   17      |MD  18   28   23   21   38   19   27   20   20   19    18

Table 3.1554.4   GPS week: 1554   Day: 4   MJD: 55126.000                            

        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
------+--------------------------------------------------------+---------------------------------------------------------
  X1  |   13  ---  ---   26  ---   22  ---   12   21  ---   10 |    21  ---  ---   33  ---   36  ---   23   37  ---    25
   2E |    6   22   10    9   25    5   27   11    7   16    4 |    16   26   24   23   26   19   25   22   19   24    19
   3  |    9   14    9   12   26    5   12    9   10   18    4 |    15   19   22   20   26   15   22   15   16   21    15
   4E |   13   20   11   14   89   12   19   28   19   23    7 |    43   43   43   46   45   41   40   44   50   33    42
   5  |    7   25   10   18   31    7   29    9   10   22    5 |    12   31   21   25   41   18   31   19   14   16    16
   6  |    5   14    8   12   20    5   10    8   10   17    3 |    13   21   22   20   25   17   23   18   17   24    16
   7E |    6   24   11   17   51    5   20   12   12   10    5 |    21   26   17   17   52   17   22   19   22   20    19
  X8  |   14   23   24   27  129   14  ---   12   13  ---    8 |    53   62   68   54   79   57  ---   53   58  ---    57
   9E |   14   19    7   11   62    6   20   13   16   21    5 |    34   39   35   42   40   36   39   43   39   36    36
  10  |    6   13    6   12   23    7   14    9    9   14    3 |    14   19   16   21   22   17   15   17   22   10    15
  11E |   10   15   11   10   43    6   17   13   11   16    4 |    44   53   48   46   62   49   49   52   52   46    47
  12  |    8   17    8    8   46    5   20    8   10   26    4 |    17   24   19   18   32   15   25   15   22   15    18
  13  |    5   25    8   12   44    6   25   10   11   15    5 |    15   29   19   19   38   15   26   17   19   15    15
  14  |    6   19    9   14   28    7   21    9    8   17    4 |    16   30   20   23   35   17   28   20   13   17    17
  15  |    6   18    9    8   43   10   25   10   10   21    4 |    14   24   20   19   37   17   26   17   21   26    16
  16  |    6   22   13   12   45    9   20    7   10   29    5 |    11   24   21   18   33   12   22   12   12   13    12
  17  |    8   21    9   10   36    7   25   10   12   25    5 |    12   34   19   22   40   17   33   13   19   22    18
  18  |    7   21   10   16   19    6   22    6   11   21    5 |    12   27   17   20   31   13   24   13   13   21    14
  19  |    6   24   10   12   51    5   27    7   11   24    5 |    19   35   17   16   52   17   36   15   20   16    18
  20  |    8   24    7   12   43    7   24   11    8   16    4 |    16   26   18   19   35   17   25   15   19   12    15
  21E |    6   18   11   12   53    5   25   10   13   10    4 |    31   31   31   31   49   29   33   28   33   35    31
  22  |    4   20   10   10   22    6   21    6   12   18    4 |    18   31   23   20   37   17   27   18   20   18    19
  23  |    5   29    7   13   37    6   26    9    9   20    5 |    14   30   18   20   33   16   26   14   21   15    16
 X24E |   16   27   19   21  ---   21  ---   23  231  ---   10 |    53   67   71   53  ---   55  ---   60  180  ---    59
  25E |    9   22    9   13  ---    7   18   15   11   12    5 |    13   25   14   16  ---   14   23   19   19   17    15
  26  |    6   14    7   10   23    6   11    8    8   19    3 |    13   23   13   15   25   12   18   15    9   15    13
 X27E |   12   21    8   15   60    8  ---   15   18  ---    6 |    20   25   21   28   29   19  ---   29   22  ---    20
  28  |    7   17   10   14   53    5   25    7   13   31    5 |    20   26   26   26   34   20   25   20   24   22    21
  29  |    8   19   10    9   39    7   19   12   11   26    5 |    17   29   18   16   35   18   28   22   14   23    16
 X30  |    6   10    8    7   38    4  ---    9    7   20    3 |    21   23   22   23   21   19  ---   23   23   17    21
  31E |    8   18    8   18   32    5   19   11    7   13    4 |    12   25   14   20   39   10   24   12   11   12    12
  32  |    8   19    8   13   28    4   13    9    6   15    4 |    13   15   13   17   25   11   15   13   12   11    10
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |    8   20    9   13   42    7   21   11   11   20      |T   20   30   24   25   37   21   27   22   27   20    21
 WRMS |    7   20    9   13   40    6   21    9    9   19      |NE  15   26   19   20   32   16   25   16   18   17    16
 MEDI |    7   20    9   12   39    6   20   10   11   18      |MD  16   26   20   20   35   17   25   18   20   17    17

Table 3.1554.5   GPS week: 1554   Day: 5   MJD: 55127.000                            

        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
------+--------------------------------------------------------+---------------------------------------------------------
  X1  |   13  ---  ---   17  ---   13  ---   14   18  ---    8 |    23  ---  ---   34  ---   25  ---   19   30  ---    21
   2E |    8   23   11   14   24    3   26   12   11   14    5 |    17   26   23   21   19   18   27   18   22   19    18
   3  |    7   14    6    9   31    3   10    6   10   17    3 |    15   23   21   18   26   16   25   15   19   24    17
   4E |   12   21    9   15   84    7   19   22   21   23    6 |    42   43   42   47   42   43   39   36   47   31    40
   5  |    6   27    8   12   31    8   26   13   33   21    6 |    18   33   21   17   38   20   31   14   48   17    21
   6  |    9   15    8   10   29    5   11    6    9   18    4 |    17   25   23   19   28   18   24   17   21   28    19
   7E |   10   26   12   10   37    6   20   13   12   10    5 |    27   30   25   26   43   24   29   25   27   27    25
  X8E |   15   32   14   35  ---   18  ---   16   23  ---    9 |    43   49   48   57  ---   49  ---   44   43  ---    45
   9E |   15   19    7   16   61    7   19   10   12   20    5 |    74   73   74   74   81   75   71   77   77   73    73
  10  |    8   14   11   13   19    6   13   10   53   14    7 |    17   22   22   17   24   18   22   17   45   15    17
  11E |   11   15    9   17   43    5   14   11   10   16    4 |    40   47   43   48   78   44   45   48   43   44    42
  12  |    6   18    8   14   40    5   22   11   12   25    5 |    15   26   21   23   27   17   26   17   18   17    18
  13  |    8   23   11    9   43    5   27   11   10   14    5 |    15   29   21   18   36   18   31   18   19   20    17
  14  |    5   17    8   16   30    3   20    8   10   16    4 |    21   32   27   26   42   23   33   21   19   20    22
  15  |    8   26    9   12   43    5   25   12    8   22    5 |    14   29   21   20   36   17   29   17   16   24    16
  16  |    7   23   12   10   58    7   20    9   10   29    5 |    14   25   23   15   40   16   26   12   19   15    16
  17  |    6   21    9   15   31    4   19    9   11   28    5 |    14   30   19   20   37   17   30   15   18   23    17
  18  |    6   22    9   13   19    5   21    8    8   22    4 |    18   31   24   17   32   20   30   18   24   22    19
  19  |    5   21    7    9   44    3   21    9    9   22    4 |    17   33   22   16   53   18   35   18   18   18    19
  20  |    7   24   11   11   34    4   20   12   12   17    5 |    15   27   24   17   32   16   24   15   17   14    15
  21E |    6   18    8   13   31    6   23   12   14    9    4 |    42   44   44   45   42   44   46   45   51   42    44
  22  |    4   19    7   16   27    6   21    9    8   18    4 |    20   33   29   29   38   24   31   21   24   22    23
  23  |    7   26   10   15   29    6   25   13   11   20    5 |    17   32   22   23   32   20   31   16   23   20    18
 X24E |   21   18   32   22  ---   17  ---   23   34  ---   11 |    65   64   79   62  ---   71  ---   76  120  ---    68
  25E |    8   29   11   12  ---    6   15   14   13   11    5 |    12   32   21   16  ---   16   23   20   19   16    16
  26  |    7   14    7   14   27    3   11   13   10   19    4 |    15   26   23   19   30   17   23   19   17   16    17
 X27E |   11   22   11   13   66    6  ---   11   12   16    5 |    37   41   38   38   46   40  ---   42   42   35    38
  28  |    8   20    9   12   52    5   23   10   14   31    5 |    17   22   24   22   36   18   26   18   22   19    18
  29  |    7   20    7   10   38    6   22   11    9   26    5 |    14   31   23   13   37   19   32   20   19   23    18
 X30  |    6   16    7   13   25    5  ---    9    8  ---    4 |    19   23   21   25   22   20  ---   20   23  ---    20
  31E |    5   22    9   12   32    5   17   11    7   10    4 |    12   27   21   17   40   16   26   12   16   14    15
  32  |    8   19   11   12   22    3   17   10   11   14    4 |    18   20   21   21   26   16   20   16   15   16    16
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |    8   21    9   13   40    5   20   11   16   20      |T   23   33   29   27   37   26   30   25   30   24    25
 WRMS |    7   21    9   13   36    5   20   10   10   19      |NE  16   27   22   20   33   18   27   17   22   19    18
 MEDI |    7   21    9   13   31    5   20   11   11   18      |MD  17   30   23   21   36   18   29   18   22   20    18

Table 3.1554.6   GPS week: 1554   Day: 6   MJD: 55128.000                            

        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
------+--------------------------------------------------------+---------------------------------------------------------
  X1  |   19  ---  ---   33  ---   32  ---   25   14  ---   13 |    30  ---  ---   39  ---   36  ---   30   25  ---    24
   2E |    8   25   11    8   31    5   25    9    9   13    4 |    15   27   23   18   37   18   25   21   22   22    19
   3  |    7   13    8   11   27    6   10    6    7   24    4 |    20   24   26   28   23   25   26   20   20   27    20
   4E |   14   21   11   14   92   10   22   20   20   17    6 |    49   44   43   52   42   48   46   38   54   35    44
   5  |    9   28    8   20   30    3   28   11    9   19    5 |    17   35   26   27   48   22   37   23   25   18    21
   6  |   10   14   11    9   22    6   10    7    7   21    4 |    22   27   30   30   26   28   28   24   23   31    24
   7E |    6   26    9   15   34    4   22    6    8   10    4 |    39   44   42   42   45   39   45   34   36   38    36
  X8E |   21   28   34   33   43   18  ---   11   29  ---   11 |    48   53   41   54   60   47  ---   54   53  ---    52
   9E |   17   22    9   11   65    9   19   11   11   26    5 |    81   76   77   81   70   71   71   78   78   71    78
  10  |    6   14    8   12   19    4   14    8    4   11    3 |    21   27   23   23   36   22   28   23   17   16    20
  11  |   14   15   13   10   47    6   19   12    7   16    4 |    55   58   54   55   85   56   58   57   53   54    54
  12  |    8   17   11   16   52    7   23    7    8   26    5 |    18   26   24   28   34   19   26   19   17   20    19
  13  |    7   20   12   11   45    4   26   10    8   14    4 |    17   28   23   23   45   20   32   19   22   16    18
  14  |    7   16   11   12   45    4   22    6    8   14    4 |    21   31   22   27   42   22   32   20   22   23    22
  15  |    9   21   11   13   46    4   26   13    9   22    5 |    22   28   24   27   35   24   31   18   26   27    20
  16  |    6   21   11   12   43    5   20    8    9   33    5 |    16   28   23   28   33   20   26   16   18   17    17
  17  |   10   19   13   14   37    7   29   14   14   25    6 |    22   36   23   18   50   24   41   24   24   28    21
  18  |    6   23    9   12   22    5   22    6    9   26    5 |    12   29   17   18   32   15   27   16   17   24    15
  19  |    6   22    9   12   41    6   25    6   10   24    5 |    24   39   25   17   54   25   45   23   27   22    24
  20  |    6   21   12   12   29    5   27    8    8   14    4 |    15   28   22   19   33   19   29   15   19   16    16
  21E |    7   16    8   11   59    4   23    5    8   11    4 |    46   48   43   49   53   47   52   47   45   42    44
  22  |    5   19   11   11   22    4   23    7    7   18    4 |    23   32   27   28   37   24   31   25   28   19    24
  23  |    7   25   13   18   31    4   29    8   10   24    5 |    17   32   25   26   36   20   35   16   19   23    18
 X24E |   27   27   36   36  ---   13  ---   35   27  ---   14 |    52   58   61   58  ---   55  ---   53   94  ---    51
  25E |    8   18    9   14  ---    3   15   12   13   13    4 |    14   21   17   17  ---   15   25   19   21   15    14
  26  |    6   14    9    9   35    3    9   10    8   20    3 |    17   25   16   15   27   16   20   21   18   16    17
  27E |   12   20    9   13   67    7   18    9    9   19    4 |    39   39   38   41   37   33   38   37   40   34    37
  28  |    7   20   13   10   45    6   25   12   13   35    6 |    24   31   31   29   32   25   30   28   23   27    24
  29  |   10   18    9   14   44    6   24   16   13   27    5 |    21   34   23   19   53   23   34   27   22   28    21
 X30  |    8   11   15    9   31    8  ---    8   10  ---    4 |    27   26   31   30   21   25  ---   28   23  ---    26
  31E |    6   21   14   16   48    5   18   11    8   15    4 |    15   26   21   20   55   18   29   15   16   11    15
  32  |    8   17   13   12   21    5   20    6    7   14    4 |    20   30   29   24   27   24   33   23   27   27    23
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |    9   20   11   13   44    5   22   10   10   21      |T   27   35   30   31   41   28   35   28   30   26    27
 WRMS |    8   20   11   13   39    5   22    9    8   18      |NE  20   29   24   24   36   22   31   21   22   22    20
 MEDI |    8   20   11   12   41    5   22    9    9   19      |MD  21   31   25   27   37   24   31   23   23   23    21



Table 4: Precise Navigation Summary.

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

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

Table 4.1554   GPS week: 1554   MJD: 55122.0-55128.0

CENT| CLK EPO  |        BRUS       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3053 |U   12    10    28 |U    9    11    32 |U    6     7    18 |
emr | emr 2914 |    17    15    51 |U   15    16    44 |     9    10    19 |
esa | esa 2948 |    13    10    31 |U   10    11    34 |     7     8    17 |
gfz | gfz 3025 |U   20    17    46 |U   23    25    64 |    12    11    25 |
grg | grg 2742 |    16    21    39 |U   18    25    58 |   284   147   459 |
igr | igr 2995 |    14    13    38 |    12    13    36 |     8     8    17 |
igs | igs 2927 |    18    19    47 |    15    16    50 |     9    10    23 |
jpl | jpl 2685 |    17    16    54 |U   20    15    54 |U    8    10    21 |
mit | mit 3072 |U   15    15    38 |U   17    16    54 |U   10    11    25 |



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 5.1554.0   GPS week: 1554   Day: 0   MJD: 55122.0

CENT| CLK EPO  |        BRUS       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3051 |     7     8    19 |    16    16    43 |     6     9    20 |
emr | emr 2847 |    13    13    46 |    20    14    53 |     7     9    23 |
esa | esa 2880 |    10     8    29 |    17    13    45 |     7     9    26 |
gfz | gfz 3022 |    19    12    59 |    39    23    79 |    10    11    22 |
grg | grg 2688 |    16    29    31 |    17    13    43 |     7     8    20 |
igr | igr 2974 |    12    14    42 |    22    15    54 |     6     6    19 |
igs | igs 2899 |    15    22    44 |    20    13    46 |     8     9    22 |
jpl | jpl 2765 |    10    11    34 |    23    15    53 |     7     8    22 |
mit | mit 3072 |    14    20    45 |    30    19    79 |     9    15    33 |

Table 5.1554.1   GPS week: 1554   Day: 1   MJD: 55123.0

CENT| CLK EPO  |        BRUS       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3050 |    15     9    22 |     8    10    39 |     6     7    20 |
emr | emr 2839 |    17    11    63 |    12    11    46 |    10    12    27 |
esa | esa 2880 |    11     8    28 |     7    10    42 |     6     8    17 |
gfz | gfz 3037 |    11     7    26 |    17    14    69 |     8     8    22 |
grg | grg 2688 |    24    23    36 |    10    14    43 |    12    19    37 |
igr | igr 3060 |    12    14    31 |    10    12    43 |     8     9    24 |
igs | igs 2870 |    19    20    52 |    11    13    49 |     8     9    22 |
jpl | jpl 2764 |    13    10    51 |    13    12    48 |     7    10    25 |
mit | mit 3072 |    14    10    39 |    18    14    70 |     8    11    23 |

Table 5.1554.2   GPS week: 1554   Day: 2   MJD: 55124.0

CENT| CLK EPO  |        BRUS       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3057 |     9     8    23 |    11    10    30 |     6     6    16 |
emr | emr 2941 |    11     8    25 |    15    15    36 |     8     8    18 |
esa | esa 2976 |    10     8    29 |    15    11    41 |     7     8    13 |
gfz | gfz 3040 |    15    12    37 |    31    43    68 |    10     9    18 |
grg | grg 2784 |    10    19    22 |    12    10    34 |     8     8    23 |
igr | igr 2976 |    13    12    41 |    12    12    33 |     7     6    12 |
igs | igs 2988 |    12    11    29 |    17    17    39 |     7     8    13 |
jpl | jpl 2767 |    12    12    38 |    20    15    34 |     9    11    21 |
mit | mit 3072 |    12     8    34 |    18    18    43 |    10    11    16 |

Table 5.1554.3   GPS week: 1554   Day: 3   MJD: 55125.0

CENT| CLK EPO  |        BRUS       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3048 |     7     6    26 |     8    13    33 |     5     4    15 |
emr | emr 2941 |    14     8    59 |    19    25    55 |    10    11    20 |
esa | esa 2976 |     7     6    26 |     8    17    33 |     5     7    12 |
gfz | gfz 3037 |    13    16    41 |    23    38    91 |    18    20    40 |
grg | grg 2784 |    11     7    33 |    11    19    39 |     7     7    20 |
igr | igr 3040 |     8     7    27 |    17    22    34 |     7     9    17 |
igs | igs 2929 |    15    15    57 |    23    23   111 |     9    12    32 |
jpl | jpl 2675 |    12     9    53 |    10    16    48 |     9     9    23 |
mit | mit 3072 |    11     9    32 |    17    19    54 |    16    11    48 |

Table 5.1554.4   GPS week: 1554   Day: 4   MJD: 55126.0

CENT| CLK EPO  |        BRUS       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3058 |    17    11    27 |     6    10    31 |     7     6    17 |
emr | emr 2942 |    27    33    43 |    11    10    40 |    10    11    16 |
esa | esa 2976 |    20    16    31 |     7     9    31 |     7     9    21 |
gfz | gfz 3044 |    41    32    44 |    17    17    52 |    13    13    31 |
grg | grg 2784 |    20    23    33 |    59   103   186 |  1933   967  3070 |
igr | igr 3019 |    19    16    34 |     6     8    32 |     8     9    18 |
igs | igs 2947 |    30    29    40 |    10    11    36 |    10    11    21 |
jpl | jpl 2577 |    32    37    75 |    27    17    71 |    10    11    18 |
mit | mit 3072 |    28    36    42 |    14    15    39 |    10    11    20 |

Table 5.1554.5   GPS week: 1554   Day: 5   MJD: 55127.0

CENT| CLK EPO  |        BRUS       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3057 |     9     6    23 |     8    10    22 |     7     7    21 |
emr | emr 2940 |    15    15    41 |    16    18    48 |     8    10    17 |
esa | esa 2976 |     9     8    22 |     8     8    25 |     7     6    17 |
gfz | gfz 3007 |    19    17    49 |    16    16    35 |    14     9    26 |
grg | grg 2688 |     9    10    23 |     9     9    30 |    10    10    20 |
igr | igr 2924 |     9     7    23 |     9    11    28 |     8     7    16 |
igs | igs 2894 |    12    12    42 |    14    17    39 |    10    10    31 |
jpl | jpl 2579 |    14    19    43 |    25    12    62 |     8    10    19 |
mit | mit 3072 |    12    11    34 |    13    15    36 |     8     8    17 |

Table 5.1554.6   GPS week: 1554   Day: 6   MJD: 55128.0

CENT| CLK EPO  |        BRUS       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3053 |    23    18    53 |     5     9    24 |     6     7    16 |
emr | emr 2953 |    24    20    77 |    14    20    33 |     9    10    14 |
esa | esa 2976 |    24    20    54 |     5     8    23 |     8     8    13 |
gfz | gfz 2989 |    26    27    64 |    16    24    57 |    10    10    19 |
grg | grg 2784 |    24    33    93 |     6    10    31 |    10    11    20 |
igr | igr 2972 |    24    19    67 |     8    11    30 |     9     9    13 |
igs | igs 2968 |    25    23    67 |    10    15    30 |     9    10    21 |
jpl | jpl 2669 |    24    18    82 |    21    20    62 |     8     8    17 |
mit | mit 3072 |    18    13    42 |    13    13    54 |     9    11    17 |


Table 6: Earth Orientation Parameters weekly summary.                          
                                                                              
        Weekly mean and standard deviation of Centre ERP, ERP rates and       
        LOD differences with respect to IGS combined values. See Table 7 for  
        the daily summaries.                                                  
                                                                              
        Xpole,Xrt: x pole and x pole rate                          
        Ypole,Yrt: y pole and y pole rate                       
        LOD      : Length Of Day                                               
                                                                              
        AC LOD BIAS    : 21-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 6.1554   GPS week: 1554   MJD: 55122.500-55128.500

                                                         AC LOD  AC LOD
CENT  FLAG  |   Xpole   Ypole     Xrt     Yrt    LOD |    BIAS  BIAS RMS
            |   [uas]   [uas]   [uas/d] [uas/d]  [us]|    [us]    [us]
------------+----------------------------------------+------------------
cod   xxxxx |     -11      31      83     -32      0 |      10     18
            |      25      23      54      74      6 |       1
emr   uuuuu |     -21      21      84    -201      8 |      72     74
            |      21      29     104      61      6 |       5
esa   uuuuu |     -12     -46      -3      96     -5 |      24     32
            |      20      21      81     200     13 |       6
gfz   uuuuu |      30       3      47     -58     -7 |       1     16
            |      17      18      65      57      6 |       2
grg   xxxxx |     -32      34      70     -89     10 |       2     33
            |      48      38      97      99     27 |       4
igr   xxxxx |      23      64      81     -29      3 |       0     17
            |      24      32      86      34      8 |       3
irf   xxxxx |       1       9      -4      24      3 |      -1     14
            |       8       8      25      27      1 |       3
jpl   uuuuu |       2       5      38     -30     14 |      24     32
            |      42      18     124      99     12 |       4
mit   uuuuu |      11      28    -195     136      8 |      11     18
            |       8      10      78      73      1 |       3
ngs   uuuuu |      -6      22     198      25     -3 |       3     13
            |      28      34     102      94      4 |       2
sio   xuuuu |     181     -38    -233    -192      3 |      41     43
            |      20      22      51      64      2 |       5


Table 7.1554.0   GPS week: 1554   Day: 0   MJD: 55122.500

                                                         AC LOD  AC LOD
CENT  FLAG  |   Xpole   Ypole     Xrt     Yrt    LOD |    BIAS  BIAS RMS
            |   [uas]   [uas]   [uas/d] [uas/d]  [us]|    [us]    [us]
------------+----------------------------------------+------------------
cod   xxxxx |       1      17      98     -92     -4 |       7     17
emr   uuuuu |     -39      34     -18    -222      3 |      63     66
esa   uuuuu |      11     -38      52     389     12 |      13     29
gfz   uuuuu |      13       4      80    -118    -10 |       1     17
grg   xxxxx |     -51      17     181    -235     61 |      -5     28
igr   xxxxx |      26      45      69     -12     -6 |      -6     17
irf   xxxxx |     -13      -2      -3      21      2 |      -6     17
jpl   uuuuu |     -13      13      65    -119     21 |      17     22
mit   uuuuu |       3      22    -267     129      5 |       5     16
ngs   uuuuu |       5      14     165     -79     -8 |       0     13
sio   xuuuu |     143     -74    -187     -94      4 |      32     37

Table 7.1554.1   GPS week: 1554   Day: 1   MJD: 55123.500

                                                         AC LOD  AC LOD
CENT  FLAG  |   Xpole   Ypole     Xrt     Yrt    LOD |    BIAS  BIAS RMS
            |   [uas]   [uas]   [uas/d] [uas/d]  [us]|    [us]    [us]
------------+----------------------------------------+------------------
cod   xxxxx |     -36      29     123     -73     -1 |      10     18
emr   uuuuu |      13      44       5    -186     12 |      68     70
esa   uuuuu |     -33     -22      72     108     11 |      19     31
gfz   uuuuu |      35     -13      87     -65    -14 |       3     16
grg   xxxxx |     -38      23     150     -52    -22 |       3     36
igr   xxxxx |      13     105     127      -1     18 |      -3     16
irf   xxxxx |       4      10     -21      48      3 |      -2     15
jpl   uuuuu |     -15       9     124     -14     37 |      20     27
mit   uuuuu |      24      28    -284     204      8 |       8     17
ngs   uuuuu |      -1      15     126    -109     -7 |       2     13
sio   xuuuu |     189     -49    -304    -161      3 |      38     41

Table 7.1554.2   GPS week: 1554   Day: 2   MJD: 55124.500

                                                         AC LOD  AC LOD
CENT  FLAG  |   Xpole   Ypole     Xrt     Yrt    LOD |    BIAS  BIAS RMS
            |   [uas]   [uas]   [uas/d] [uas/d]  [us]|    [us]    [us]
------------+----------------------------------------+------------------
cod   xxxxx |       1       5      26     -46     -8 |      12     19
emr   uuuuu |      -8      52      66    -116     16 |      73     74
esa   uuuuu |      -9     -56      -5    -109     -2 |      26     33
gfz   uuuuu |       7     -19      86     -45    -11 |       4     16
grg   xxxxx |      -6      52      26     -35    -13 |       4     36
igr   xxxxx |      39     102      59       3      8 |       0     18
irf   xxxxx |       0       3     -16      25      1 |       1     15
jpl   uuuuu |       5      10      21     127     18 |      26     35
mit   uuuuu |       7      20    -214     129      8 |      11     19
ngs   uuuuu |       1      41     169     120      0 |       4     13
sio   xuuuu |     173     -46    -203    -215      2 |      42     44

Table 7.1554.3   GPS week: 1554   Day: 3   MJD: 55125.500

                                                         AC LOD  AC LOD
CENT  FLAG  |   Xpole   Ypole     Xrt     Yrt    LOD |    BIAS  BIAS RMS
            |   [uas]   [uas]   [uas/d] [uas/d]  [us]|    [us]    [us]
------------+----------------------------------------+------------------
cod   xxxxx |       5      43     134      63      0 |       9     17
emr   uuuuu |     -24      20     107    -185     15 |      73     75
esa   uuuuu |      -9     -82      -2    -106     -4 |      28     33
gfz   uuuuu |      43      -6      24     -11    -10 |       0     15
grg   xxxxx |     -30      78     -38      24     -3 |      -1     35
igr   xxxxx |      60      21       2     -59      5 |       0     18
irf   xxxxx |       8       3     -23      29      4 |      -1     14
jpl   uuuuu |     -23     -32      32      63      4 |      25     33
mit   uuuuu |      11      22    -204     126      9 |      10     18
ngs   uuuuu |     -18      88     216     126      1 |       3     12
sio   xuuuu |     198     -42    -255    -225      4 |      42     44

Table 7.1554.4   GPS week: 1554   Day: 4   MJD: 55126.500

                                                         AC LOD  AC LOD
CENT  FLAG  |   Xpole   Ypole     Xrt     Yrt    LOD |    BIAS  BIAS RMS
            |   [uas]   [uas]   [uas/d] [uas/d]  [us]|    [us]    [us]
------------+----------------------------------------+------------------
cod   xxxxx |     -13      27       2      64     -2 |      10     18
emr   uuuuu |     -46      -5      86    -196     -1 |      76     77
esa   uuuuu |     -33     -46    -149     -45    -20 |      31     34
gfz   uuuuu |      36      25      27      25     -3 |       0     15
grg   xxxxx |     -50      35     143     -40     17 |       3     32
igr   xxxxx |      30      46     250      -1      2 |       2     16
irf   xxxxx |       3      16     -27      49      1 |       1     13
jpl   uuuuu |       5      -1     182     -25      1 |      26     34
mit   uuuuu |       9      24    -172     208      7 |      12     19
ngs   uuuuu |      23      17     339     -18      1 |       4     12
sio   xuuuu |     195     -16    -272    -166      1 |      44     45

Table 7.1554.5   GPS week: 1554   Day: 5   MJD: 55127.500

                                                         AC LOD  AC LOD
CENT  FLAG  |   Xpole   Ypole     Xrt     Yrt    LOD |    BIAS  BIAS RMS
            |   [uas]   [uas]   [uas/d] [uas/d]  [us]|    [us]    [us]
------------+----------------------------------------+------------------
cod   xxxxx |      20      76      62    -125      4 |       9     17
emr   uuuuu |     -35      33      46    -318      4 |      76     77
esa   uuuuu |     -27     -58     -61     111    -15 |      29     33
gfz   uuuuu |      53      26     107     -58     -1 |      -1     15
grg   xxxxx |      55      68      94     -62     12 |       5     32
igr   xxxxx |      -8      82       3     -52     -5 |       3     16
irf   xxxxx |       8      20      28      23      2 |       2     13
jpl   uuuuu |     -34       8      56    -116     11 |      27     35
mit   uuuuu |      18      48    -173     162      7 |      14     19
ngs   uuuuu |      14     -17     316      56     -1 |       5     12
sio   xuuuu |     195     -12    -246    -187      0 |      45     46

Table 7.1554.6   GPS week: 1554   Day: 6   MJD: 55128.500

                                                         AC LOD  AC LOD
CENT  FLAG  |   Xpole   Ypole     Xrt     Yrt    LOD |    BIAS  BIAS RMS
            |   [uas]   [uas]   [uas/d] [uas/d]  [us]|    [us]    [us]
------------+----------------------------------------+------------------
cod   xxxxx |     -52      22     134     -18     10 |       9     18
emr   uuuuu |      -8     -31     299    -185      9 |      76     77
esa   uuuuu |      15     -22      72     323    -14 |      26     33
gfz   uuuuu |      24       2     -83    -137      2 |      -2     17
grg   xxxxx |    -102     -36     -64    -222     18 |       7     31
igr   xxxxx |      -1      44      59     -81      3 |       4     15
irf   xxxxx |      -6       9      34     -30      5 |       2     13
jpl   uuuuu |      92      24    -213    -129      9 |      30     35
mit   uuuuu |       5      29     -48      -9      8 |      15     19
ngs   uuuuu |     -63      -2      52      76     -5 |       4     13
sio   xuuuu |     172     -27    -161    -300      6 |      44     46



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