[IGSREPORT-18027] Wk 1557 IGS Final Orbits

Jim Ray IGS.ACC at noaa.gov
Thu Nov 26 04:04:27 PST 2009


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IGS Electronic Report   26 Nov 04:04:51 PST 2009      Message Number 18027
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Author:  AC Coordinator / NOAA NGS

sum-file Version 2.0
Final IGS Orbit Combination - Week 1557   (Nov 08, 2009 - Nov 14, 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:

igs1557[0-6].sp3  IGS GPS ephemeris files in SP3 format.
igs1557[0-6].clk  IGS GPS satellite and station clocks in SP3 format.
igs1557[0-6].cls  IGS GPS clock combination summary report.
igs15577.erp      Earth Rotation Parameters (ERP) and their rates as well as
                  Universal Time (UT1-UTC) and Length Of Day (LOD) associated 
                  with IGS ephemerides.
igs15577.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  |  COD   | 9 27 9 27
                0  |  EMR   | WTZR
                0  |  ESA   | 27
                0  |  GFZ   | 5 7 9 15 21 23 31 ADE1 ALIC AREQ BRFT CAS1 CHUR COCO
                0  |  GFZ   | DAV1 FAIR GUAM KARR KOUR LPGS MAC1 MAS1 MBAR MCM4
                0  |  GFZ   | NRMD ONSA PERT SANT SCH2 SUTH THTI THU3 TIDB TOW2
                0  |  GFZ   | TSKB TWTF
                0  |  GRG   | WTZR
                0  |  JPL   | 32 DGAR
                0  |  MIT   | 24 24
                0  |  NGS   | 1
                1  |  ALL   | 8 8
                1  |  COD   | 9 9 27
                1  |  EMR   | YELL YELL
                1  |  ESA   | 9 27
                1  |  GFZ   | 4 7 9 24 ALIC CAS1 DAEJ DAV1 GUAT HARB NYAL PIE1
                1  |  GFZ   | PIMO PRDS RAMO SYOG TSKB TWTF YKRO YSSK
                1  |  GRG   | ONSA
                1  |  JPL   | 32 YELL
                1  |  MIT   | 22 HARB
                2  |  ALL   | 25
                2  |  COD   | 9 27 9 27
                2  |  EMR   | WTZR WTZR
                2  |  ESA   | 9 27
                2  |  GFZ   | 9 20 24 AMC2 AREQ ASPA AUCK BRUS CAS1 CEDU DAV1 EIL1
                2  |  GFZ   | FAA1 HARB HYDE IRKT ISPA KERG KOUC LPGS MAL2 MBAR
                2  |  GFZ   | MIZU NICO NYA1 ONSA PRDS RABT RAMO SANT SFER THTI
                2  |  GFZ   | TRO1 TSKB ULAB WSRT WTZR YAR2
                2  |  GRG   | ONSA
                2  |  JPL   | 32 UNSA
                2  |  MIT   | 10 10 HARB
                3  |  ALL   | 24
                3  |  COD   | 9 27 9 27 NTUS XMIS
                3  |  EMR   | WTZR
                3  |  ESA   | 9 27
                3  |  GFZ   | 7 9 27 29 31 ABPO ALIC BRAZ BRFT BRUS CAS1 DARW DGAR
                3  |  GFZ   | FLIN GRAZ GUAM HARB HOFN HRAO HRM1 KERG KIRU KOUC
                3  |  GFZ   | MAS1 MBAR MCM4 MIZU NYA1 NYAL OUS2 RAMO SFER TIXI
                3  |  GFZ   | TWTF VILL WAB2 WSRT YELL YSSK
                3  |  GRG   | ONSA
                3  |  JPL   | 32 DGAR
                3  |  MIT   | HARB MATE
                4  |  ALL   | 24
                4  |  COD   | 9 27 NRMD
                4  |  EMR   | WTZR
                4  |  ESA   | 9 27 UNSA XMIS
                4  |  GFZ   | 7 9 27 31 ALGO ALIC ALRT ASPA AUCK BOR1 BRUS BUE1
                4  |  GFZ   | CEDU DARW FLIN GRAZ GUAT HARB KIRU MAS1 MCM4 METS
                4  |  GFZ   | NRC1 NYA1 NYAL PIMO PRDS SFER THU3 TOW2 ULAB WSRT
                4  |  GRG   | ONSA ULAB
                4  |  JPL   | 9 27 32 DGAR
                4  |  MIT   | 10 10 ALGO ALGO COCO HARB
                4  |  NGS   | 1
                5  |  COD   | 9 27 9 27 NRIL
                5  |  ESA   | 9 27 UNSA
                5  |  GFZ   | 9 19 20 21 24 31 32 ABPO ASPA AUCK COCO FAA1 GUAM
                5  |  GFZ   | HARB KIRU KOUR LPGS MAS1 NICO NYA1 NYAL ONSA PIMO
                5  |  GFZ   | QAQ1 STJO SUTM WSRT WTZR
                5  |  GRG   | ONSA
                5  |  JPL   | 32 DGAR
                5  |  MIT   | 24 HARB
                5  |  NGS   | 1
                6  |  ALL   | 1 1
                6  |  COD   | 9 27 9 27 GUAT
                6  |  EMR   | 4 GRAZ WTZR ONSA WTZR
                6  |  ESA   | 9 27 HOB2 UNSA XMIS
                6  |  GFZ   | 5 9 13 19 21 28 29 ALIC AUCK BRFT CAS1 CEDU CHAT
                6  |  GFZ   | CHUR COCO CONZ GUAM GUAT HOB2 HOLM HYDE IRKT KOUC
                6  |  GFZ   | KOUR MAC1 MCM4 MDO1 MIZU NRMD NYA1 ONSA PERT PRE1
                6  |  GFZ   | RIOP SANT SFER SUTH TIDB TIXI TOW2 VILL WSRT YELL
                6  |  GFZ   | YSSK ZIMM
                6  |  GRG   | WTZR
                6  |  JPL   | 32 DGAR
                6  |  MIT   | 24

 5. 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. 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
               ----+------------+----------
               G06 | 2009_11_13 | 2009117 
               G25 | 2009_11_10 | 2009115 

 6. 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  |  NGS   |  24
                1  |  MIT   |   8
                1  |  SIO   |   8
                2  |  ESA   |  25

 7. 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.

 8. 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  |     .4     .9    1.4     -12     -1    -12    -.19
       EMR  |    5.9    2.6    6.4      60      2     57     .51
       ESA  |    6.2    5.9     .8      94    -37     44    -.17
       GFZ  |     .5    1.2    1.1       7    -13     -6    -.12
       GRG  |    2.3    9.7    1.5      29     11     37     .66
       JPL  |    7.2    7.9   10.9      -8    -29    -44     .35
       MIT  |    2.7    4.3    7.9      -6     11    -45    -.15
       NGS  |    3.2   -1.5   -6.2     -14    -61      4    -.01
       SIO  |    2.6    7.1    -.1     125    -28     13     .10


 9. 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.

10. 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.

11. 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 1.1557.a). It also displays the computed satellite
position sigmas for the combined orbits (table 1.1557.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 2.1557.[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 3.1557.[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 5.1557.0-6).

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 1557 summary.                       (Nov 08, 2009 - Nov 14, 2009)

Table 1.1557.a   GPS week: 1557   MJD: 55143.000-55149.000

         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  237|    0     0    -1    63     4   -14  -.17    9    8 |    -187    -316     17     68
        |    0     0     0    15    22     9   .02           |     258     630
emr   90|    2     0     2  -100   -60   -16   .57   19   19 |    -110    -658     16     83
        |    1     2     1    13    32    11   .04           |    1028    1306
esa  127|    1    -1     0  -114   -27    -4   .35    9    9 |    -186     293     19    118
        |    0     0     1    19    16    33   .05           |     872    1468
gfz  195|    0     0    -1    39   -36     4  -.12   11   11 |     354    -581     32    134
        |    0     1     1    18    45     6   .03           |     279     380
grg  109|    1     0     4    -2   -25     5  1.05   24   21 |  973299  148669     62    215
        |    1     1     2    49    22    10   .03           | 1565503  438757
igr  n/a|    0     0     1    35    -4   -22   .03    5    5 |    4547    -578     21     71
        |    0     0     1    11    21    24   .03           |    1218    1519
jpl  119|   -1    -2     2    54    57    20   .56   20   18 |    1426    -611     17     90
        |    1     1     1    18    12    32   .06           |    1055    1353
mit  267|   -1     1     0    47   -50    -6  -.27   11    9 |  -15405    -958     21    106
        |    1     0     0    19    10     9   .02           |    1024    1970
ngs  212|   -1     0    -1    50   126    23  -.19   12    8 | -371571   15011   2406  15767
        |    1     0     2    12    26    19   .03           |  443306  374960
sio  262|   -1     3     5  -199    27    -1  -.18   21   22 |     ---     ---    ---    ---
        |    0     0     2    20    12     7   .02           |     ---     ---


Table 1.1557.b   GPS week : 1557   MJD: 55143.000-55149.000   

         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  |   16   13   13   13   11   19   11 |
   2  |    6    5    5    6    5    5    6 |
   3  |    4    4    4    4    4    4    4 |
   4  |    5    5    5    5    5    5    5 |
   5  |    5    6    5    5    5    5    5 |
   6  |    4    4    4    4    7    0    4 |
   7  |    5    5    5    4    4    5    5 |
   8  |    0    0    0   44    0    0    0 |
   9  |    6    6    6    7    6    5    6 |
  10  |    4    4    4    4    5    4    4 |
  11  |    4    4    4    4    4    4    4 |
  12  |    5    5    6    6    5    5    5 |
  13  |    5    4    5    5    5    5    5 |
  14  |    5    5    5    5    5    5    5 |
  15  |    6    6    6    5    6    6    6 |
  16  |    7    6    6    6    6    6    6 |
  17  |    5    5    5    5    5    4    5 |
  18  |    5    5    5    5    5    5    5 |
  19  |    5    5    5    4    5    4    5 |
  20  |    4    4    4    4    4    5    5 |
  21  |    4    4    4    4    5    4    4 |
  22  |    5    4    4    5    5    4    4 |
  23  |    6    5    6    6    6    6    6 |
  24  |   11    8   10   12   11   10   12 |
  25  |    7    6    0   13    8    7    7 |
  26  |    4    4    4    4    4    4    4 |
  27  |    8    7    7    7    7    7    7 |
  28  |    6    6    5    6    6    6    5 |
  29  |    5    5    5    5    5    5    5 |
  30  |    4    4    4    4    4    4    4 |
  31  |    6    5    5    5    5    5    5 |
  32  |    5    5    5    5    5    5    6 |



Table 2: Daily transformation of each centre to the combined IGS orbit and
         clocks for each day of the week. The transformation displayed is the
         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 2.1557.0   GPS week: 1557   Day: 0   MJD: 55143.000                            

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|    1     0     0    50   -32   -19  -.14    9    9 |    -149    -423     15     72
        |                      2    -3                       |
emr   90|    3     0     1   -81   -56   -32   .63   19   19 |    1667   -1770     19     93
        |                    -22    14                       |
esa  127|    2    -1    -1  -145   -11    34   .32   11   11 |     654   -1048     23    121
        |                     -5   -12                       |
gfz  195|    1     2     0    32    22     1  -.14   12   12 |     258    -400     29    130
        |                    -20    66                       |
grg  109|    1     1     3     7   -33    12  1.10   24   21 |     808    -783     57    211
        |                    -67    -8                       |
igr  n/a|    1     0     1    45   -30    26  -.01    6    6 |    6657   -1749     22     70
        |                    -92    25                       |
jpl  119|   -2     0     0    64    56   -38   .62   19   18 |    3261   -1586     18    101
        |                    -83   -85                       |
mit  267|    0     0     0    70   -43   -18  -.26   11   10 |  -15350   -1506     20    103
        |                    -16    19                       |
ngs  212|   -2     0    -1    40    70    42  -.20   12    7 | -901653  404471   1635   3587
        |                     21    12                       |
sio  262|   -2     2     2  -186    39     0  -.20   20   18 |     ---     ---    ---    ---
        |                     60   -26                       |

Table 2.1557.1   GPS week: 1557   Day: 1   MJD: 55144.000                            

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     0    58   -11    -6  -.16    8    8 |    -596     797     20     81
        |                    -17     0                       |
emr   90|    5     2     1  -105   -58     1   .59   19   19 |     475   -2217     20     91
        |                    -21    10                       |
esa  127|    1    -1     0  -107   -27   -47   .38   10    9 |     274     403     20    121
        |                     -3     5                       |
gfz  195|    0    -1     0    52    -8     9  -.13   12   12 |     249    -649     37    146
        |                    -17    14                       |
grg  109|    2     0     7    -2   -56     3  1.02   24   22 |     372     263     71    205
        |                    -67    -2                       |
igr  n/a|   -1     0     1    26    12   -36   .06    6    6 |    5318   -2807     26     64
        |                    -70   -39                       |
jpl  119|   -2    -1     3    45    69    45   .66   20   18 |    2147   -2569     18     87
        |                    -33   -34                       |
mit  267|    0     1     0    54   -62     6  -.28   10    9 |  -15920    1031     26    126
        |                     -7    30                       |
ngs  212|   -2    -1    -2    57   135    19  -.25   12    8 |    -624     767   2037   3824
        |                     19   -55                       |
sio  262|   -1     4     2  -212     2    -9  -.21   20   21 |     ---     ---    ---    ---
        |                     65   -12                       |

Table 2.1557.2   GPS week: 1557   Day: 2   MJD: 55145.000                            

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|    1     0    -2    86    10    -6  -.19    9    8 |    -131    -282     16     59
        |                    -55   -13                       |
emr   90|    2     1     3   -88   -66    -9   .58   18   18 |   -1143       5     18     92
        |                    -26    34                       |
esa  127|    2    -1     1  -115   -28   -26   .36    8    8 |    -151     698     18    118
        |                     -5    27                       |
gfz  195|    1     2    -1    61   -71     2  -.17   12   12 |     296    -515     35    132
        |                    -70     3                       |
grg  109|    0     0     7    37   -46   -16  1.04   23   23 |     526    -711     60    202
        |                   -108     2                       |
igr  n/a|    0     0     2    47    -4   -31   .04    5    5 |    3198    -323     20     70
        |                    -54    22                       |
jpl  119|    0     0     1    72    62    33   .54   20   18 |     239    -221     19     88
        |                    -36    32                       |
mit  267|    0     0     0    23   -58    -7  -.29   10    9 |  -13880   -4064     21    107
        |                      4    36                       |
ngs  212|   -3     0     0    68   138    44  -.18   12    8 |  -83674   64293   2777   4081
        |                     74    -9                       |
sio  262|   -1     3     3  -225    39    -4  -.18   20   27 |     ---     ---    ---    ---
        |                     59   -43                       |

Table 2.1557.3   GPS week: 1557   Day: 3   MJD: 55146.000                            

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    -1    78     0   -29  -.18    9    9 |    -332    -159     22     71
        |                    -32   -22                       |
emr   90|    1     0     0  -103  -118   -18   .59   19   19 |      40   -1683     12     69
        |                     -4    83                       |
esa  127|    1     0     0  -115    -6    29   .37    9    9 |   -1542    -820     18    105
        |                    -25    -8                       |
gfz  195|    0     1    -2    18    -8     6  -.12   11   11 |     834   -1282     35    114
        |                    -50     2                       |
grg  109|    0     0     3    -4   -10     8  1.03   23   22 |  296992 1119731     61    208
        |                    -23   -54                       |
igr  n/a|    0     0     0    26   -36   -28   .05    5    5 |    3953   -1439     19     68
        |                    -14    -3                       |
jpl  119|    0    -1     0    80    33    18   .52   19   17 |    1129   -1484     17     80
        |                    -51    29                       |
mit  267|   -1     1     0    41   -62     0  -.27   10    9 |  -15249   -1417     20     98
        |                      0    39                       |
ngs  212|    0     0    -1    59   125   -11  -.19   12    9 | -999999 -753609   4675  87476
        |                    100   -23                       |
sio  262|   -1     3     6  -220    20    -4  -.17   20   23 |     ---     ---    ---    ---
        |                     59   -20                       |

Table 2.1557.4   GPS week: 1557   Day: 4   MJD: 55147.000                            

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     1     0    55    10   -22  -.20    9    9 |    -321    -159     15     62
        |                    -20   -20                       |
emr   90|    0    -2     3   -93   -72   -19   .55   19   19 |    -288    -809     17     86
        |                      6    29                       |
esa  127|    2    -2     1  -131   -46    24   .37    9    9 |    -372    1483     20    117
        |                    -12    36                       |
gfz  195|    0     0     0    48   -15    -7  -.08    9    9 |      68     -15     33    168
        |                    -24    -4                       |
grg  109|    2     1     3    33     3    14  1.04   24   21 |   69736  -46333     64    233
        |                    -79   -59                       |
igr  n/a|    0    -1     0    49    11    -3   .06    6    5 |    3995    -157     20     73
        |                    -25   -15                       |
jpl  119|    0    -2     2    39    52     3   .52   19   18 |    1168    -420     18     99
        |                     -7     1                       |
mit  267|   -1     2     0    68   -41   -10  -.28   11   10 |  -15883    -897     19    101
        |                     -6    21                       |
ngs  212|   -2    -1    -4    31   126     9  -.20   12    8 |  -63422   63961   1581   3371
        |                     57    26                       |
sio  262|   -1     5     5  -179    31    12  -.20   23   26 |     ---     ---    ---    ---
        |                     44   -41                       |

Table 2.1557.5   GPS week: 1557   Day: 5   MJD: 55148.000                            

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|    1     0    -1    71    16    -6  -.17    8    7 |     198   -1281     19     75
        |                    -36   -33                       |
emr   90|    2     1     5  -122   -37   -27   .54   19   19 |   -1425     997     15     95
        |                     27    17                       |
esa  127|    1    -1     0  -102   -21   -19   .38    9    9 |     855   -1335     19    128
        |                    -11    73                       |
gfz  195|    1     0    -1    12  -102    13  -.12   10   10 |     133    -517     31    128
        |                      8    -2                       |
grg  109|    2     0     0    21   -29    14  1.09   21   21 | 2734440  147551     61    235
        |                    -71   -30                       |
igr  n/a|    0    -1     0    27    -2   -37   .02    5    5 |    3546    1450     18     81
        |                    -52   -15                       |
jpl  119|   -3    -2     3    33    70    19   .51   21   19 |     348    1186     17     85
        |                      8   -21                       |
mit  267|   -2     0     0    49   -51   -14  -.25   10    9 |  -17038    1951     22    126
        |                     -3    24                       |
ngs  212|    0    -1    -5    52   153    30  -.15   12    8 | -566877  324654   1811   3995
        |                     43    -2                       |
sio  262|   -2     4     7  -200    29     1  -.17   24   21 |     ---     ---    ---    ---
        |                     41   -42                       |

Table 2.1557.6   GPS week: 1557   Day: 6   MJD: 55149.000                            

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    -1    45    37   -13  -.18    9    9 |      21    -711     14     57
        |                    -11   -39                       |
emr   90|    3    -2     3  -107   -12    -6   .51   19   19 |     -98     866     15     60
        |                     17    -4                       |
esa  127|    0     0    -1   -84   -51   -28   .26    8    8 |   -1020    2673     18    116
        |                    -24    61                       |
gfz  195|    1    -1    -4    47   -69     5  -.11    9    9 |     642    -691     28    122
        |                    -17     1                       |
grg  109|    0    -1     2  -108    -4     2  1.04   29   20 | 3710225 -179030     66    213
        |                     92   -23                       |
igr  n/a|    0     0     0    26    17   -44   .01    5    5 |    5168     975     26     72
        |                    -53   -28                       |
jpl  119|   -2    -4     2    46    56    61   .55   20   19 |    1691     814     17     92
        |                     -6    34                       |
mit  267|   -2     0     1    22   -36     1  -.25   12   10 |  -14518   -1806     20     84
        |                      7    29                       |
ngs  212|   -1     0     1    45   136    28  -.19   13   10 |   15251     540   2331   4041
        |                     74   -11                       |
sio  262|   -1     2     8  -172    30    -3  -.18   23   20 |     ---     ---    ---    ---
        |                     31   -45                       |

       
       
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 3.1557.0   GPS week: 1557   Day: 0   MJD: 55143.000                            

        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  ---  ---  ---  ---   44  ---   18   30  ---   16 |    32  ---  ---  ---  ---   43  ---   24   40  ---    26
   2  |   11   24    9   15   23    7   22   13    8   21    5 |    23   35   27   18   35   21   31   27   22   36    22
   3  |    8   11    9    6   13    6   10    6    9   20    3 |    21   24   27   26   25   20   25   23   21   27    22
   4  |    8   17   10   10   15    4   13    9    9   23    4 |    18   25   20   19   24   19   23   21   23   25    18
   5  |   10   24    9   10   24    4   21    9   10   17    5 |    24   39   30   28   49   29   37   28   27   31    27
   6  |    7   12   10   10   13    5   10    9   10   21    4 |    16   15  129   16   16  188   16  128   14   18    16
   7E |    7   20   10   11   24    6   23   16   11    9    5 |    48   47   48   48   48   47   45   47   51   45    46
  X8E |    4  ---  ---  ---  ---  232  ---  ---  ---  ---    0 |    35  ---  ---  ---  ---  120  ---  ---  ---  ---    33
   9E |   16   22   11   12   20    7   21   11   18   17    6 |    32   34   28   30   38   29   34   30   35   30    29
  10  |    8   14   10    9   13    5   10   11   10   21    4 |    18   27   24   24   32   21   25   22   23   27    21
  11  |    8   14    9   10   26    5   13    8    8   14    3 |    21   30   24   24   43   22   29   20   22   25    21
  12  |    8   19    9   12   25    5   22    7   12   19    4 |    22   29   22   25   39   23   30   23   23   24    21
  13  |    5   20   14   13   27    5   22   10    9   17    5 |    21   33   29   27   43   24   32   24   24   23    22
  14  |    8   17   12   14   27    7   22   10    7   17    4 |    20   32   35   33   36   25   29   25   22   20    24
  15  |    7   21    9   10   22    7   22    7   15   28    5 |    24   30   27   27   37   24   29   24   25   31    23
  16  |   11   26   13   11   29    8   24   26   12   29    7 |    25   36   28   27   38   26   34   30   26   23    23
  17  |    9   13   14   13   40    8   13    9   12   18    4 |    32   37   34   33   49   32   37   32   32   32    31
  18  |    7   24    9   18   23    8   21    7    7   16    5 |    27   43   30   28   49   29   40   27   29   35    28
  19  |    8   14   11    7   20    7   15    7    8   29    4 |    26   29   27   25   35   24   29   27   27   30    25
  20  |    5   21   13    9   26    5   17    5    5   11    4 |    25   35   28   22   45   25   35   23   27   26    25
  21  |    7   15    7    7   41    7   19    8    8   11    3 |    20   27   25   23   49   24   27   20   22   19    20
  22  |    7   19   12   14   25    7   19    8    8   17    4 |    21   34   25   23   45   23   32   24   25   28    22
  23  |    9   27   18   15   24    5   25    6   10   20    6 |    19   36   34   28   36   22   32   21   22   24    22
 X24  |   16   25   24   20  ---   18  ---   22  161  ---   10 |    20   32   21   29  ---   27  ---   30  105  ---    21
  25E |   13   21   17   14  ---    8   18   12   26   17    6 |     8   18   28   12  ---    9   15   11   24   13     8
  26  |    7   13    9   10   15    5   12    9    8   13    3 |    18   26   26   22   30   22   24   23   22   21    20
  27E |   14   27   10   11   27    6   24   15   32   18    7 |    25   31   28   28   32   26   31   24   47   30    26
  28  |   12   17   11   13   25    6   20   13   11   27    5 |    23   30   29   30   39   23   32   28   23   23    24
  29  |    8   16   10   11   22    5   18    9   11   34    5 |    32   41   39   34   44   35   40   33   32   29    33
  30  |    7   14    7   12   17    6   11    9    7   11    3 |    24   24   26   27   25   23   24   23   23   20    22
  31E |    9   22   14   10   22    6   22   18    8   18    5 |    34   43   35   36   46   36   44   38   36   36    34
  32  |   10   18   14   10   14    5   18   10    5   22    4 |    21   27   26   21   30   23   31   23   25   29    21
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |    9   19   11   12   24    6   19   11   12   20      |T   24   31   31   26   37   33   30   29   29   26    24
 WRMS |    9   19   11   12   21    6   18   10    7   18      |NE  22   31   31   25   37   31   30   28   27   26    23
 MEDI |    8   19   10   11   23    6   19    9   10   18      |MD  23   31   28   27   38   24   31   24   25   27    22

Table 3.1557.1   GPS week: 1557   Day: 1   MJD: 55144.000                            

        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  ---  ---  ---  ---   17  ---   13  ---  ---   13 |    20  ---  ---  ---  ---   23  ---   18  ---  ---    19
   2  |    8   21   12   11   21    5   24   12    9   21    5 |    15   24   18   16   25   15   26   19   15   33    15
   3  |    8   10    8    9   14    6   10    6    8   20    3 |    10   17   17   17   16   12   18   16   18   18    12
   4  |    7   23    7   12   13    5   14    9   12   21    4 |     9   24   13   15   16   13   19   13   15   17    10
   5  |    8   26   10   17   24    6   25   11    8   18    5 |    15   33   19   15   41   17   30   16   18   17    15
   6  |    5   12    7    9   14    6   10    8    8   21    3 |    11   13   92   14   14  130   13   88   17   14    11
   7E |    9   18    9   15   51    5   22    8    8   15    4 |    24   26   26   28   54   23   31   23   30   21    23
  X8E |    4  ---  ---  ---  ---  149  --- 2146  --- 1042    0 |    29  ---  ---  ---  ---   87  ---   16  ---    8    29
   9E |   11   22    9   14   13    7   21   12   17   17    5 |    27   30   28   31   29   28   32   29   35   29    27
  10  |    8   16   10   11   12    6   14   10    7   16    4 |    16   29   25   23   32   19   26   19   18   21    19
  11  |    7   13    9   10   28    6   16    7    8   11    3 |    14   21   16   16   35   14   21   18   18   19    14
  12  |    9   22   12   10   25    8   24   12    8   20    5 |    16   28   24   20   33   19   31   19   20   20    18
  13  |    7   20    8   12   30    4   19    8    8   17    4 |    12   31   19   15   41   13   27   14   11   16    12
  14  |    7   20   10    8   24    6   23    9   10   16    4 |    16   27   25   20   35   18   27   19   19   15    18
  15  |    8   24    9   12   24    7   28   10   11   27    5 |    13   26   15   17   30   15   27   16   15   27    13
  16  |   10   24    8   16   28    5   23   19   11   29    6 |    16   31   19   22   32   17   30   21   21   17    16
  17  |   10   14   10   14   38    9   17   11   14   18    4 |    17   27   25   27   41   22   28   18   22   17    18
  18  |    6   26    8   14   24    4   23    6   11   16    5 |    21   34   23   18   41   21   35   19   20   24    20
  19  |    6   14    8   10   23    7   14    8   11   29    4 |    18   21   15   19   27   17   22   20   24   17    16
  20  |    5   20   14    9   25    3   19    6   11    9    4 |    14   27   19   19   36   15   25   14   17   16    13
  21  |    7   18    7    9   34    5   15    8   11   12    4 |    15   21   15   15   40   14   22   15   15   16    13
  22  |    6   17    7   11   26    6   20    7   10   15    4 |    16   28   21   18   39   16   29   16   19   20    17
  23  |    8   26   12   14   26    7   24    6   10   20    5 |    11   33   22   18   34   15   29   14   15   16    13
 X24  |   17   21   18   18  ---    9  ---   22   15   26    8 |    15   23   23   20  ---   17  ---   22   60   15    13
  25E |   12   20   11   17  ---    7   18   14   24   21    6 |     8   15   31   12  ---   10   15   10   24   14     9
  26  |    7   15    8    6   14    4   15   10    8   14    3 |    13   21   17   13   27   14   24   18   16   16    14
  27E |   12   27    9   20   12    7   25   12   29   17    7 |    14   23   19   27   23   20   22   18   41   19    17
  28  |    9   18   10   15   26    4   23   14   14   27    5 |    16   25   22   22   33   17   29   23   17   20    17
  29  |    9   16    9   10   21    6   18    8   11   33    5 |    15   25   20   16   28   18   26   16   17   17    15
  30  |    7   12    6    9   15    4   11    9   11    9    3 |    16   17   19   18   21   15   18   16   18   16    15
  31E |    7   16   10   13   21    5   24   11    9   18    4 |    16   21   16   19   22   18   27   20   21   21    16
  32  |    9   17   12   10   17    4   16   10   10   20    4 |    14   20   14   17   22   13   23   16   18   22    12
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |    8   19   10   12   24    6   20   10   12   20      |T   15   24   22   18   30   22   25   19   21   18    15
 WRMS |    8   19    9   12   22    6   18    9    8   21      |NE  14   25   22   18   30   20   25   20   19   18    14
 MEDI |    8   18    9   11   24    6   19   10   10   18      |MD  15   25   19   18   32   17   26   18   18   17    15

Table 3.1557.2   GPS week: 1557   Day: 2   MJD: 55145.000                            

        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  ---  ---  ---  ---   19  ---   12  ---  ---   12 |    17  ---  ---  ---  ---   20  ---   17  ---  ---    16
   2  |    9   22    8   17   22    3   23   10    9   23    5 |    19   29   18   18   27   17   26   23   18   36    18
   3  |    7   12    6    8   18    4   11    7   14   20    3 |    15   21   20   18   21   14   21   18   17   22    15
   4  |   10   18    9   13   12    4   14    9    9   21    4 |    12   24   18   19   20   14   21   18   21   17    15
   5  |    9   22    8   12   22    4   25    9   11   16    5 |    19   36   24   25   44   26   33   25   26   28    23
   6  |    5   11    5   11   16    4   11    9   12   20    3 |    14   14  137   14   13  195   12  131   14   15    13
   7E |   10   19    6   13   17    6   22    7    8   14    4 |    23   26   23   25   34   23   26   23   26   23    21
  X8E |    6  ---  ---  ---  ---  118  ---  ---  ---  ---    0 |    25  ---  ---  ---  ---   64  ---  ---  ---  ---    25
   9E |   10   20   11   12   19    6   19   13   22   17    5 |    27   32   30   31   30   28   30   25   36   30    27
  10  |    8   14    9   11   11    4   16   12   10   15    4 |    28   36   32   30   37   30   34   30   32   35    30
  11  |    6   12    7   10   27    4   18    7    8   13    3 |    15   21   16   16   31   13   20   15   17   18    14
  12  |   10   21   10   13   24    8   23   15   11   22    5 |    16   26   16   18   30   15   26   21   21   21    16
  13  |    9   22    7   15   29    6   20    7   10   19    4 |    13   37   23   24   43   20   30   19   22   20    18
  14  |    8   19    9   13   26    5   24    8    9   16    4 |    16   29   24   26   33   21   28   23   23   22    21
  15  |   10   23    9   13   23    5   27    9    8   29    5 |    18   31   29   24   34   23   31   22   26   32    22
  16  |    9   21    9   10   26    6   20   15   11   28    5 |    19   31   20   19   33   20   27   19   22   17    17
  17  |    9   14   10   17   40    5   16   12   11   17    4 |    19   29   26   26   47   23   31   21   23   20    21
  18  |    6   22    8   13   22    4   23    6   13   14    4 |    25   37   27   23   39   23   38   24   28   30    25
  19  |    9   16    7    9   21    5   17    8   11   28    4 |    22   25   19   21   26   19   25   20   21   22    19
  20  |    5   19    7   12   23    4   23    6   10   11    4 |    17   29   22   14   36   17   29   18   21   21    18
  21  |    9   20    9    7   37    4   16    8   12   12    4 |    12   27   19   14   41   16   26   16   23   18    16
  22  |    5   19    8   10   22    5   21    6    9   15    4 |    18   33   23   21   42   20   31   21   23   27    21
  23  |    9   26    9   19   22    5   24    8   11   22    5 |    12   35   23   23   36   18   29   18   22   20    16
 X24  |   19   27  ---   24  ---   13  ---   21   25   26   10 |    22   31  ---   28  ---   24  ---   24   52   16    17
 X25E |    6  ---  215  ---  ---   43  ---  ---  ---  ---    0 |    32  ---  181  ---  ---   57  ---  ---  ---  ---    38
  26  |    8   15    8    9   13    6   16   10    8   14    4 |    14   27   20   18   28   18   23   22   20   23    18
  27E |   14   23   11   13   18    8   23   15   32   18    7 |    20   29   26   26   31   24   25   24   45   24    23
  28  |   10   16    7   12   29    5   27   11    5   28    5 |    17   28   22   23   37   17   30   21   20   22    18
  29  |    9   13    6   10   21    5   19    7   10   33    4 |    20   27   24   20   33   23   28   21   26   24    21
  30  |    8   12    9   10   17    4   13    7    7   10    3 |    19   19   19   19   26   16   22   20   21   15    17
  31E |    7   14    9   11   28    4   22   13    6   15    4 |    19   22   19   20   32   19   24   21   21   21    17
  32  |    9   16    8   10   15    4   19   10    7   22    4 |    16   23   17   17   25   15   26   17   19   28    15
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |    9   18    8   12   23    5   20   10   12   20      |T   18   28   31   21   32   27   26   24   24   23    19
 WRMS |    8   18    8   12   23    5   18    9    8   27      |NE  17   28   26   20   32   26   26   24   23   22    18
 MEDI |    9   19    8   12   22    5   20    9   10   18      |MD  18   29   23   21   33   20   26   21   22   22    18

Table 3.1557.3   GPS week: 1557   Day: 3   MJD: 55146.000                            

        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  |   17  ---  ---  ---  ---   26  ---   12   23  ---   12 |    27  ---  ---  ---  ---   33  ---   23   31  ---    23
   2  |    9   24   10   20   22    4   24    8   10   24    5 |    21   34   21   20   27   19   30   21   20   36    20
   3  |    8   11    8    8   11    5   12    6   10   19    3 |    17   23   19   25   20   20   24   19   23   23    19
   4  |   10   21    9   11   11    5   11   12   10   22    4 |    16   27   18   17   20   13   21   21   18   20    16
   5  |    8   20    6   10   28    3   24    7    6   17    4 |    21   33   21   22   41   20   32   21   22   24    21
   6  |    6   12    7   10   15    5   11    9   11   18    4 |    10   17  178   19   12  259   14  177   13   13    12
   7E |    6   15    9    9   14    4   20    7    9   14    4 |    27   32   31   31   39   28   32   30   31   30    28
  X8E |   35  ---  ---  ---  183   63  ---  ---   52  ---   43 |    26  ---  ---  ---  152   46  ---  ---    8  ---    37
   9E |   15   26    8   11   23    7   20   17   22   17    6 |    37   41   37   39   47   37   40   42   50   40    38
  10  |    9   14    7    9   16    5   13    8    7   17    3 |    24   32   24   25   31   23   28   28   31   32    25
  11  |    8   14    9   11   31    5   15    6    9   11    3 |    22   22   15   17   34   15   21   15   22   20    15
  12  |   10   20    8   11   25    7   24   14   13   21    5 |    21   33   25   24   35   25   34   24   30   27    23
  13  |   10   22   10   16   30    4   19    9    8   19    5 |    18   34   23   25   43   21   27   22   18   24    18
  14  |    7   19   12   11   30    5   22    9   12   16    5 |    18   31   25   23   36   20   27   23   23   22    20
  15  |    9   20   10    8   25    5   23    9    8   28    5 |    18   27   23   20   34   17   28   21   15   32    18
  16  |   11   25   10    9   24    4   21   14    8   30    5 |    20   34   22   24   36   22   28   24   21   22    20
  17  |    8   16    8   18   31    8   14   16   11   19    5 |    30   35   33   33   40   28   31   34   30   33    30
  18  |    6   22   10   14   23    5   24    9   16   14    5 |    26   40   25   26   45   26   42   26   33   30    26
  19  |    6   13    7    7   21    5   13    6   11   28    4 |    25   24   20   26   29   23   27   25   30   26    24
  20  |    6   20   12    7   23    5   20    5    7   13    4 |    22   34   20   18   38   19   28   20   23   24    20
  21  |   11   20   10    7   40    5   16    9   11   10    4 |    22   26   22   18   48   20   23   20   19   20    19
  22  |    6   18    9   13   24    5   20    8   13   14    4 |    20   35   22   21   43   20   32   24   27   28    21
  23  |   10   28   11   16   25    5   24    8    9   24    5 |    18   35   22   21   36   19   30   18   19   21    17
 X24  |   25   26  ---   17  ---   13  ---   14   32  ---   11 |    21   30  ---   20  ---   24  ---   22   53  ---    19
 X25E |   20  ---   22  ---  ---   18  ---   18   26  ---   12 |    28  ---   19  ---  ---   22  ---   24   44  ---    25
  26  |    7   17    8    7   19    4   13   11   12   14    4 |    17   27   20   18   28   17   23   23   22   23    18
  27E |   13   25    8   12   24    7   21   15   33   16    7 |    21   31   27   27   36   27   29   26   48   27    25
  28  |   14   15   11   15   27    5   20   14   11   27    5 |    19   33   28   31   37   23   30   30   22   24    24
  29  |    9   16    9    9   20    6   16    7   10   34    5 |    27   35   30   27   37   28   33   27   24   26    26
  30  |    8   13    7    8   17    3   12    8    9   11    3 |    23   29   25   25   28   25   27   25   25   23    23
  31E |    6   16   11   12   17    4   22   13    9   17    4 |    24   31   28   27   30   27   32   30   31   30    26
  32  |   10   18   11    8   13    4   18   10    7   25    4 |    20   25   20   21   27   18   25   19   21   32    18
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |    9   19    9   11   23    5   19   10   12   20      |T   22   30   29   23   38   30   28   29   26   26    22
 WRMS |    9   19    9   11   22    5   17    9    9   23      |NE  20   30   29   22   33   30   27   28   24   25    20
 MEDI |    9   19    9   11   23    5   20    9   10   17      |MD  21   32   23   24   36   22   28   24   23   24    21

Table 3.1557.4   GPS week: 1557   Day: 4   MJD: 55147.000                            

        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  |   16  ---  ---  ---  ---   13  ---   14   16  ---   11 |    21  ---  ---  ---  ---   22  ---   22   28  ---    21
   2  |   10   21    7   10   23    6   23    9   11   25    5 |    22   32   21   20   29   20   29   21   26   36    21
   3  |    7   12    7    9   15    5    9    8   11   19    3 |    16   20   18   18   21   16   22   19   25   24    17
   4  |   11   17    6   10   12    5   13   16   11   23    5 |    16   24   16   19   20   16   21   23   18   22    16
   5  |   10   23    8   13   24    4   23    8    7   17    5 |    22   35   29   24   41   22   31   20   22   23    22
  X6  |    7  ---   10  ---  ---    9  ---   10  ---  ---    6 |    14  ---  482  ---  ---  701  ---  486  ---  ---    13
   7E |    6   19    7   10   13    7   20    8   11   11    4 |    26   28   28   28   30   26   27   27   22   27    25
  X8E |    4  ---  ---  ---  ---   55  ---  ---  ---  ---    0 |    30  ---  ---  ---  ---   70  ---  ---  ---  ---    32
   9E |   11   24   11   11   34    6   20   12   20   18    5 |    24   30   23   24   35   21   26   25   31   27    22
  10  |    9   13    9   11   14    5   15    8    7   44    5 |    76   78   78   74   78   74   76   74   76   92    76
  11  |    7   11    8    8   30    4   18    6    9   12    3 |    17   25   22   20   38   17   28   19   19   23    18
  12  |   12   20    8    6   27    6   23   11   11   22    5 |    20   31   26   23   36   20   30   22   24   24    21
  13  |    7   22    9    9   24    3   21    9   12   20    4 |    20   35   28   26   45   21   32   19   21   24    22
  14  |   10   18   10    8   27    6   23    9    8   16    4 |    17   31   26   23   32   17   27   22   20   21    20
  15  |   10   25    9   11   25    6   27   10   15   29    5 |    23   35   28   26   34   24   32   25   26   34    24
  16  |    9   21    7    9   24    5   22   15   11   31    5 |    19   31   23   20   31   18   32   22   27   21    20
  17  |    8   18    6   14   32    8   14   13   12   18    4 |    27   33   32   31   41   28   32   29   27   25    27
  18  |    7   22    9   15   22    6   23    9   11   15    5 |    28   37   29   27   43   27   38   26   33   31    27
  19  |    6   15    9    9   24    7   19    9   11   28    4 |    27   30   25   24   31   24   32   27   31   28    25
  20  |    7   18   10    5   23    5   20   10    8   14    4 |    20   32   28   26   44   22   30   24   20   30    23
  21  |   13   18    9    6   38    5   16   10   10   13    4 |    19   25   19   18   43   17   22   20   18   21    17
  22  |    8   19   10   10   25    6   19   10    9   15    4 |    19   31   24   20   42   18   30   22   26   28    20
  23  |    8   27   14   10   26    4   25   13   10   28    6 |    19   35   32   28   38   21   34   20   23   24    22
 X24  |   17   22  ---   19  ---   30  ---   20  ---  ---   11 |    24   25  ---   22  ---   21  ---   21  ---  ---    20
 X25E |   16   26   11   16  ---   12   16   17   26  ---    7 |    20   25   19   17  ---   21   18   24   31  ---    23
  26  |    8   15    8    8   18    5   13   10    6   13    3 |    17   29   22   22   29   15   23   22   19   22    19
  27E |   11   25   11   10   27    7   20   14   31   20    6 |    25   31   26   28   34   26   27   25   41   29    24
 X28  |   10  ---    8   10   27    5   24   12   15  ---    5 |    19  ---   26   24   40   20   31   24   21  ---    21
  29  |   11   13    7    6   22    7   14    7   13   37    5 |    25   33   31   26   39   26   32   24   27   25    26
  30  |    9   11    7    5   19    3   13    7   11   12    3 |    22   24   27   22   26   21   24   22   23   20    22
  31E |    6   15    7    7   16    5   21   13   11   22    4 |    23   27   24   25   28   22   27   28   29   21    23
  32  |   10   19    9    7   11    7   16   11    8   28    4 |    18   24   21   24   29   17   27   22   23   37    20
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |    9   19    9    9   24    6   19   11   12   23      |T   22   31   42   25   36   45   30   39   26   28    23
 WRMS |    9   19    9    9   21    5   18   10    8   26      |NE  22   31   46   25   36   48   31   42   25   28    23
 MEDI |    9   19    9   10   24    6   20   10   11   19      |MD  20   31   26   24   35   21   29   22   25   24    22

Table 3.1557.5   GPS week: 1557   Day: 5   MJD: 55148.000                            

        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  |   17  ---  ---  ---  ---   35  ---   23   42  ---   19 |    26  ---  ---  ---  ---   45  ---   19   55  ---    25
   2  |    7   20   10    8   22    6   27    8   13   28    5 |    18   28   19   16   26   18   29   20   21   38    18
   3  |    6   10    8   11   12    4    9   10   12   20    3 |    15   15   15   20   17   16   16   16   21   24    14
   4  |    8   16    6    9   19    7   12   11   14   30    4 |    11   19   15   15   22   13   18   18   21   23    13
   5  |    6   23    8   10   26    5   23    8    8   20    4 |    16   28   21   20   41   18   26   16   18   18    17
  X6  |    5  ---  ---  ---  ---    8  ---  ---  ---  ---    0 |     5  --- 9999  ---  ---    6  --- 9999  ---  ---     5
   7E |    6   19    8   15   15    6   20    8   13   16    4 |    24   27   23   25   35   23   28   23   27   24    23
  X8E |    5  ---  ---  ---  263  208  ---  ---  ---  ---    0 |    26  ---  ---  ---   58  157  ---  ---  ---  ---    28
   9E |   11   26    8    8   23    7   20   12   15   22    5 |    26   31   24   26   27   24   25   26   31   29    23
  10  |    7   13    7    8   11    5   12    7   11   20    3 |    52   54   50   52   58   51   54   52   53   51    52
  11  |    7   13    8   12   29    3   20    7   10   14    4 |    18   24   13   23   35   18   26   18   20   22    17
  12  |    8   20    9    7   23    6   25   10   11   23    4 |    16   25   18   19   33   17   26   18   21   22    17
  13  |    7   21   10   12   25    6   22   10   10   25    5 |    17   30   18   24   44   20   27   15   19   20    16
  14  |    8   19    9   12   25    6   25    7    7   18    4 |    12   25   23   19   32   15   24   17   18   18    16
  15  |    7   25   13   10   23    6   26   10    9   30    5 |    17   29   25   20   31   19   29   22   24   32    20
  16  |    7   25   12    8   21    7   27   14   13   32    5 |    15   29   15   17   28   15   30   16   19   17    13
  17  |    7   16    6   11   27    6   17    8    9   20    4 |    18   26   29   25   37   22   27   22   22   17    21
  18  |    7   26    9   13   19    2   24    9    7   13    4 |    22   32   24   20   36   20   30   19   23   22    20
  19  |    5   14    5   11   20    4   15    8   11   28    4 |    21   25   20   23   24   21   26   23   26   20    21
  20  |    5   21    9    7   18    6   22   11    9   17    4 |    17   28   20   22   35   20   27   21   18   27    19
  21  |    9   17    9    6   34    3   18    9    8   13    4 |    15   23   16   16   35   13   24   19   21   20    16
  22  |    6   21    7   11   22    5   19    9   10   13    4 |    16   28   21   17   38   17   25   17   19   21    16
  23  |    9   27   10   15   23    6   27   10   11   29    5 |    14   33   20   26   36   18   28   16   19   20    16
 X24  |   16   31  ---   27  ---   16  ---   16   17  ---   10 |    20   28  ---   28  ---   18  ---   20   25  ---    17
 X25E |   15   19   11   17  ---    8   15   17   23  ---    6 |    13   20   17   16  ---   13   21   21   24  ---    13
  26  |    8   15    7   10   15    6   15    8    7   17    3 |    13   23   19   18   22   15   20   16   17   17    15
  27E |   12   27    9    9   22    6   22   16   28   24    6 |    14   23   18   19   28   18   21   22   37   24    15
  28  |    9   18   10   13   24    5   27   11   14   30    5 |    15   26   20   20   38   17   30   19   23   16    17
  29  |   10   14   10    8   19    6   17    7   10   38    5 |    20   28   21   23   29   20   28   21   23   25    20
  30  |    7   12    6    6   13    5   14    9    9   14    3 |    19   17   22   17   26   19   23   19   20   15    17
  31E |    6   15    9    9   20    3   23   18   12   24    5 |    24   26   24   25   28   25   27   30   24   22    23
  32  |    8   16   10    7   12    4   22   12    9   35    5 |    17   22   15   22   26   18   24   21   18   42    17
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |    8   19    9   10   21    5   21   10   12   24      |T   18   26   20   21   33   24   26   20   24   23    18
 WRMS |    7   19    9   10   21    5   19    9    8   21      |NE  17   26   20   21   32   19   26   20   23   23    18
 MEDI |    7   19    9   10   22    6   20   10   11   22      |MD  17   26   20   20   32   18   26   19   21   22    17

Table 3.1557.6   GPS week: 1557   Day: 6   MJD: 55149.000                            

        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  ---  ---  ---  ---   28  ---   15   21  ---   11 |    26  ---  ---  ---  ---   26  ---   28   31  ---    26
   2  |    9   25    8   10   23    3   26    9   11   29    5 |    26   36   21   22   30   22   33   28   27   47    25
   3  |    8   10    4    5   14    5   10   13   11   23    3 |    20   21   18   22   18   19   23   23   23   30    20
   4  |   11   12    6    8   23    3   12   11   12   28    4 |    17   22   19   19   20   19   22   24   25   27    19
   5  |    8   21    8    9   21    4   21    8    9   19    4 |    22   31   23   21   37   23   33   22   26   24    22
   6  |    8   11    6    5   15    6   10   14   13   25    4 |     7    8    2    4    8    9    6    3    4    4     8
   7E |    8   16    9   10   12    3   20    9   13   15    4 |    26   31   30   30   34   28   32   26   33   26    26
  X8E |    4  ---  ---  ---  371  157  ---  ---  ---  ---    0 |    32  ---  ---  ---   78  112  ---  ---  ---  ---    33
   9E |   11   23    9   13   24    6   19   13   21   21    5 |    31   36   28   33   31   30   33   28   41   27    29
  10  |    8   12    8    7   14    5   13   10   12   16    3 |    50   53   50   51   49   52   54   53   59   56    51
  11  |    8   15    8    9   28    5   17    9   10   14    4 |    21   24   19   22   34   21   22   22   26   23    20
  12  |   12   22    9    9   98    6   26    9    9   24    5 |    26   38   29   30   95   27   38   28   29   35    28
  13  |    9   20    7    8   27    4   24   17   10   22    5 |    19   30   21   22   40   21   30   18   24   24    18
  14  |    8   21    8    7   29    4   24   11   13   15    4 |    18   27   25   22   34   19   29   23   20   21    20
  15  |    7   22   13   11   25    4   25   11   10   29    5 |    21   29   21   21   33   19   32   27   24   35    20
  16  |    9   26   10    8   22    6   25   16   11   34    6 |    23   37   24   25   34   24   36   28   31   29    24
  17  |   10   14   11   15   33    6   17    7   11   21    4 |    33   35   35   37   45   33   39   34   35   35    33
  18  |    8   24    9   12   20    3   22   12   10   13    5 |    33   42   29   26   47   29   45   30   37   33    31
  19  |    6   16    6    7   22    6   17   15    7   28    4 |    35   37   30   32   37   33   37   37   36   31    33
  20  |    7   16    6    5   22    5   21   14   11   21    4 |    21   28   22   20   37   19   31   23   27   30    21
  21  |   10   16    9    7   37    3   16   12    8   13    4 |    22   29   22   25   44   22   31   26   26   27    23
  22  |    7   21    7   10   26    4   19   10    9   10    4 |    23   33   23   20   44   21   33   25   27   25    23
  23  |   10   23   10   10   24    5   25   17   11   32    6 |    19   31   24   23   34   20   30   18   22   24    18
 X24  |   25   21   33  ---  ---   11  ---   13   18  ---   12 |    24   37   19  ---  ---   24  ---   28   42  ---    27
 X25E |   15   18   11   15  ---    6   16   17   27  ---    7 |    14   21   16   18  ---   16   20   22   34  ---    18
  26  |    8   15    7    8   16    4   14    9   11   15    4 |    19   22   22   20   27   19   26   22   23   20    19
  27E |   12   22    9   12   24    5   20   15   30   23    6 |    22   30   24   28   29   26   28   26   46   27    24
  28  |   12   20   11   12   29    6   21    8   11   26    5 |    21   32   27   31   37   24   30   23   21   18    23
  29  |   10   15    8    8   20    5   16   10   15   37    5 |    33   39   37   35   40   33   39   33   34   36    34
  30  |   10   11    6    7   15    4   12   10   11   12    3 |    24   23   24   24   26   22   26   25   23   22    22
  31E |    9   18    6    9   18    5   21   14   12   26    5 |    31   37   34   36   38   34   33   34   33   36    32
  32  |   12   20    7    7   13    6   23   14   11   35    5 |    19   22   18   19   26   17   28   22   27   39    18
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |    9   19    8    9   29    5   20   12   13   23      |T   24   30   24   25   37   26   31   26   29   28    24
 WRMS |    9   19    8    9   20    5   19   10   10   20      |NE  23   30   24   24   36   23   31   25   28   28    24
 MEDI |    9   18    8    9   23    5   20   12   11   22      |MD  22   31   23   23   34   22   31   26   27   27    23



Table 4: Precise Navigation Summary.

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

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

Table 4.1557   GPS week: 1557   MJD: 55143.0-55149.0

CENT| CLK EPO  |        BRUS       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3025 |U   14    11    31 |U    9     9    29 |U   29    24    52 |
emr | emr 2771 |    28    25    63 |U   11    10    31 |    20    27    46 |
esa | esa 2797 |    18    15    34 |U    9    10    28 |    20    20    46 |
gfz | gfz 2762 |U   22    21    51 |U   20    20    76 |    26    25    55 |
grg | grg 2701 |    25    20    54 |U   10    11    31 |    27    25    52 |
igr | igr 2890 |    18    16    44 |     9     9    28 |    20    22    42 |
igs | igs 2844 |    19    16    51 |    11    10    29 |    20    22    43 |
jpl | jpl 2717 |    24    22    63 |U   11    10    29 |U   25    27    57 |
mit | mit 2962 |U   20    22    44 |U   12    11    34 |U   26    26    50 |



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 5.1557.0   GPS week: 1557   Day: 0   MJD: 55143.0

CENT| CLK EPO  |        BRUS       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3022 |     8     8    19 |    10     7    33 |    10    12    20 |
emr | emr 2836 |    21    18    46 |    15    11    34 |     9    11    20 |
esa | esa 2880 |    14    13    22 |    10     6    30 |     9     9    18 |
gfz | gfz 2823 |    16    32    49 |    16    12   102 |    10    10    21 |
grg | grg 2688 |     9     8    26 |    11     8    36 |    12    11    16 |
igr | igr 2880 |    13    15    24 |     9     7    29 |     8     7    15 |
igs | igs 2886 |     7     6    29 |    15     9    39 |     9    10    21 |
jpl | jpl 2770 |    29    16    47 |    14     9    36 |    10    10    19 |
mit | mit 2976 |    11    14    36 |    13     7    39 |     9    11    27 |

Table 5.1557.1   GPS week: 1557   Day: 1   MJD: 55144.0

CENT| CLK EPO  |        BRUS       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3027 |    15    10    22 |    11    10    39 |    12    15    22 |
emr | emr 2851 |    30    21    91 |    12    11    40 |    12    14    20 |
esa | esa 2880 |    13    10    36 |    10     9    45 |    11    12    20 |
gfz | gfz 2829 |    23    17    38 |    14    27    52 |    11    11    23 |
grg | grg 2688 |    17    10    22 |    15    16    47 |    12    11    18 |
igr | igr 2985 |    16     9    42 |    10    10    41 |    12    14    22 |
igs | igs 2908 |    28    20    79 |    11     9    41 |    11    13    21 |
jpl | jpl 2771 |    38    27    94 |    12    11    40 |    12    13    19 |
mit | mit 3072 |    25    22    38 |    11    11    47 |  ----  ----  ---- |

Table 5.1557.2   GPS week: 1557   Day: 2   MJD: 55145.0

CENT| CLK EPO  |        BRUS       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3063 |     9     6    28 |     9     8    30 |    13    41    60 |
emr | emr 2752 |    41    34    68 |    11     7    25 |     9    50    22 |
esa | esa 2688 |    10    11    32 |     9    10    24 |    22    42   117 |
gfz | gfz 2740 |    22    19    39 |    15    11    51 |    27    51    96 |
grg | grg 2688 |    14    11    30 |     8    10    25 |    18    51    83 |
igr | igr 2882 |    16    13    38 |     9     8    24 |     9    32    45 |
igs | igs 2847 |    36    32    67 |     9     7    24 |     8    34    38 |
jpl | jpl 2679 |    38    33    85 |    11     8    24 |    30    52   126 |
mit | mit 2880 |    32    32    40 |    13    11    27 |     8    34    36 |

Table 5.1557.3   GPS week: 1557   Day: 3   MJD: 55146.0

CENT| CLK EPO  |        BRUS       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3058 |    14     7    30 |    11     8    26 |    73    16    95 |
emr | emr 2751 |    17    20    49 |    11     8    29 |    24    19    52 |
esa | esa 2784 |    17     8    31 |    10     9    23 |    27    15    35 |
gfz | gfz 2733 |    24    16    47 |    15    14    64 |    36    18    45 |
grg | grg 2784 |    18     8    31 |    10     9    30 |    59    18    95 |
igr | igr 2905 |    21    21    82 |    10     8    22 |    30    19    52 |
igs | igs 2854 |    18    21    47 |    10     8    24 |    27    19    51 |
jpl | jpl 2680 |    21    31    59 |    10     9    27 |    33    21    55 |
mit | mit 2976 |    19    24    41 |    13    10    29 |    34    17    48 |

Table 5.1557.4   GPS week: 1557   Day: 4   MJD: 55147.0

CENT| CLK EPO  |        BRUS       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3041 |    15    11    34 |     7     8    24 |    63    43    77 |
emr | emr 2643 |    34    44    68 |     9     9    32 |    71    68   120 |
esa | esa 2784 |    13    11    24 |     7     8    25 |    57    38    67 |
gfz | gfz 2730 |    15    18    56 |    12    11    56 |    67    46    94 |
grg | grg 2592 |    12    10    44 |     8     8    24 |    63    39    66 |
igr | igr 2877 |    17    13    24 |     7     7    28 |    60    52    85 |
igs | igs 2796 |    13    11    36 |     8     7    25 |    63    47    84 |
jpl | jpl 2676 |    10    16    42 |     7     8    24 |    69    52    92 |
mit | mit 2976 |    12    13    58 |     9    10    34 |    70    50    87 |

Table 5.1557.5   GPS week: 1557   Day: 5   MJD: 55148.0

CENT| CLK EPO  |        BRUS       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 2938 |    15    13    41 |     9     7    30 |    23    31    70 |
emr | emr 2734 |    25    19    55 |    10     9    31 |    10    21    71 |
esa | esa 2688 |    26    25    49 |     7     7    30 |     8    17    47 |
gfz | gfz 2754 |    13    11    29 |    52    29   146 |    14    23    66 |
grg | grg 2688 |    14    12    40 |    10     9    31 |    18    31    57 |
igr | igr 2795 |    30    28    52 |     8     7    28 |    11    23    62 |
igs | igs 2763 |    14     8    43 |    12     9    29 |    14    23    70 |
jpl | jpl 2676 |    17    22    57 |    11     9    27 |    16    27    71 |
mit | mit 2880 |    19    19    45 |    14    11    31 |    24    34    76 |

Table 5.1557.6   GPS week: 1557   Day: 6   MJD: 55149.0

CENT| CLK EPO  |        BRUS       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3031 |    27    22    44 |     8    13    23 |     8     9    22 |
emr | emr 2835 |    26    17    66 |    11    16    23 |     7     9    15 |
esa | esa 2880 |    34    29    48 |     9    17    22 |     5     7    16 |
gfz | gfz 2729 |    41    38    99 |    19    36    63 |    18    14    38 |
grg | grg 2784 |    95    78   184 |    11    16    26 |    10    11    28 |
igr | igr 2906 |    18    17    43 |    10    17    23 |     8     8    15 |
igs | igs 2860 |    18    15    59 |    12    18    23 |     6     6    17 |
jpl | jpl 2769 |    16    12    56 |     9    13    23 |     8    10    15 |
mit | mit 2976 |    25    30    51 |    13    16    29 |     8     8    25 |


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 6.1557   GPS week: 1557   MJD: 55143.500-55149.500

                                                         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 |      30      26     -43     161     -2 |       1     17
            |      21      23      61      83      9 |       4
emr   uuuuu |     -15       5      70    -161    -13 |      58     62
            |      28      16      61     130     12 |       7
esa   uuuuu |     -15      14      60     -15      8 |       2     23
            |      29      13      74     111     10 |       3
gfz   uuuuu |       0      29     -54       1      2 |      -2     16
            |      29      25      46      68      4 |       2
grg   --xxx |      --      --     -91      92      4 |      15     23
            |      --      --     151      52     25 |       2
igr   xxxxx |      19      54      30      27      1 |      -7     19
            |      24      23      75      46      9 |       3
irf   xxxxx |      11       2      10      88      7 |      -7     19
            |       7       6      15      32      4 |       3
jpl   uuuux |      18      32    -111     176    -18 |      15     28
            |      40      26     145      89     22 |       7
mit   uuuuu |     -17       5     -28    -114      5 |      12     23
            |      10       6      54      44      5 |       4
ngs   uuuuu |      20     -53     124      88     -3 |      -1     15
            |      22      28     140     142      3 |       4
sio   uuuuu |      44     -49    -175     140    -17 |      33     40
            |      20      17     104      48      8 |      10


Table 7.1557.0   GPS week: 1557   Day: 0   MJD: 55143.500

                                                         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 |       9     -11     -93     131      6 |       5     21
emr   uuuuu |      -8      13      59    -360      0 |      68     71
esa   uuuuu |      18      -4     107     147    -11 |       8     25
gfz   uuuuu |     -60      11      37     -58      2 |       1     17
grg   --xxx |      --      --    -279      41    -22 |      19     23
igr   xxxxx |     -19      83      26      25    -12 |      -3     18
irf   xxxxx |       6      -9      10      53      1 |      -1     21
jpl   uuuux |      91      74    -176      77      0 |      23     30
mit   uuuuu |     -13       7     -61    -138      9 |      18     29
ngs   uuuuu |      -6     -30      30     201      1 |       4     12
sio   uuuuu |      32     -69     -62      54    -26 |      46     50

Table 7.1557.1   GPS week: 1557   Day: 1   MJD: 55144.500

                                                         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 |      -3      16     -55      75     13 |       3     19
emr   uuuuu |     -13      20     127    -291      9 |      63     67
esa   uuuuu |      -8       2       4     -54      8 |       3     24
gfz   uuuuu |     -17      16     -67     -72     11 |      -1     17
grg   --xxx |      --      --    -218      91      5 |      16     23
igr   xxxxx |      36      69     132      44     16 |      -7     20
irf   xxxxx |      -3      -1      -2      45     11 |      -4     20
jpl   uuuux |      31      32      80     194     15 |      21     29
mit   uuuuu |     -33       6      20    -126     13 |      15     26
ngs   uuuuu |      52     -20     -81     269     -9 |       3     11
sio   uuuuu |       9     -66     -11     145    -13 |      40     46

Table 7.1557.2   GPS week: 1557   Day: 2   MJD: 55145.500

                                                         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 |      28      57    -122      41     -6 |       2     19
emr   uuuuu |     -19      28      63    -152    -16 |      62     65
esa   uuuuu |     -12       7     121     -33     20 |       0     24
gfz   uuuuu |      12      72     -41     -53     -3 |      -2     17
grg   --xxx |      --      --    -131      42      5 |      14     23
igr   xxxxx |      -7      56      12      25      0 |      -6     20
irf   xxxxx |      15       2       7      85      3 |      -6     21
jpl   uuuux |     -17      38    -126     255    -30 |      21     29
mit   uuuuu |     -21      -2     -39    -151     -1 |      14     26
ngs   uuuuu |      24     -72      29     179     -2 |       0     15
sio   uuuuu |      58     -57    -174     149    -25 |      37     45

Table 7.1557.3   GPS week: 1557   Day: 3   MJD: 55146.500

                                                         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 |      34      35     -19     217    -15 |       3     19
emr   uuuuu |     -71       7      51    -126    -19 |      60     64
esa   uuuuu |      20      28     169    -100     12 |       3     25
gfz   uuuuu |      10      53     -62      -2      2 |      -1     17
grg   --xxx |      --      --    -180     113    -10 |      15     23
igr   xxxxx |      15      17     -31     -29     -3 |      -5     19
irf   xxxxx |      12       3     -10     116      6 |      -6     21
jpl   uuuux |     -17      54    -179     220    -49 |      18     28
mit   uuuuu |     -27       3    -101     -72      3 |      13     25
ngs   uuuuu |      35     -97     166      88     -4 |      -1     15
sio   uuuuu |      32     -56    -231     159    -19 |      35     44

Table 7.1557.4   GPS week: 1557   Day: 4   MJD: 55147.500

                                                         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 |      35      23     -76     248     -7 |      -1     11
emr   uuuuu |     -14      -3     126    -134    -22 |      55     57
esa   uuuuu |     -21      15     -39     107      8 |       1     21
gfz   uuuuu |      19      27     -52     115      3 |      -3     13
grg   --xxx |      --      --     -19     167     29 |      14     22
igr   xxxxx |      30      28      99     -32      6 |      -7     17
irf   xxxxx |      15       3      22      91      5 |      -8     16
jpl   uuuux |      14      10     105      28    -32 |      12     24
mit   uuuuu |      -6       9     -47    -120      1 |       9     17
ngs   uuuuu |     -11     -54     147    -133     -3 |      -2     13
sio   uuuuu |      56     -41    -217     148    -17 |      28     33

Table 7.1557.5   GPS week: 1557   Day: 5   MJD: 55148.500

                                                         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 |      50      47      20     162     -6 |      -2     12
emr   uuuuu |       0     -16     110    -100    -22 |      53     56
esa   uuuuu |     -56      22      40    -170     18 |       1     21
gfz   uuuuu |      19       3    -102      49     -1 |      -3     13
grg   --xxx |      --      --      75     146     43 |      15     23
igr   xxxxx |      32      63      60      68     -2 |      -7     18
irf   xxxxx |      17      11       8     134      9 |      -8     16
jpl   uuuux |      38       3    -226     261    -26 |      10     26
mit   uuuuu |      -7      14     -33     -35      1 |       9     17
ngs   uuuuu |      19     -32     273      57     -4 |      -3     14
sio   uuuuu |      59     -30    -311     212     -9 |      25     31

Table 7.1557.6   GPS week: 1557   Day: 6   MJD: 55149.500

                                                         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 |      56      17      45     250     -1 |      -6     20
emr   uuuuu |      21     -11     -47      38    -18 |      47     54
esa   uuuuu |     -44      30      19      -4      2 |      -2     22
gfz   uuuuu |      16      23     -93      26      0 |      -7     19
grg   --xxx |      --      --     116      47    -22 |      15     23
igr   xxxxx |      45      59     -86      89      0 |     -12     24
irf   xxxxx |      17       6      36      95     10 |     -12     21
jpl   uuuux |     -17      12    -253     196     -3 |       2     32
mit   uuuuu |     -12      -1      63    -153      6 |       5     20
ngs   uuuuu |      28     -68     306     -43     -3 |      -8     21
sio   uuuuu |      62     -25    -218     116     -6 |      18     29



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