[IGSREPORT-17781] Wk 1546 IGS Final Orbits

Jim Ray IGS.ACC at noaa.gov
Thu Sep 10 05:25:15 PDT 2009


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IGS Electronic Report   10 Sep 05:25:39 PDT 2009      Message Number 17781
******************************************************************************

Author:  AC Coordinator / NOAA NGS

sum-file Version 2.0
Final IGS Orbit Combination - Week 1546   (Aug 23, 2009 - Aug 29, 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:

igs1546[0-6].sp3  IGS GPS ephemeris files in SP3 format.
igs1546[0-6].clk  IGS GPS satellite and station clocks in SP3 format.
igs1546[0-6].cls  IGS GPS clock combination summary report.
igs15467.erp      Earth Rotation Parameters (ERP) and their rates as well as
                  Universal Time (UT1-UTC) and Length Of Day (LOD) associated 
                  with IGS ephemerides.
igs15467.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   | 26 26 WTZR
                0  |  EMR   | MIZU
                0  |  ESA   | 3 6 26 UNSA
                0  |  GFZ   | 1 14 FAA1 VESL
                0  |  GRG   | LPGS ONSA TWTF
                0  |  JPL   | 26 32
                0  |  MIT   | HARB
                0  |  NGS   | 1
                1  |  ALL   | 1
                1  |  COD   | 3 6 26 3 6 26 WTZR
                1  |  EMR   | WTZR
                1  |  ESA   | 3 6 26
                1  |  GFZ   | 3 8 14 ANKR FAA1 MATE NYA1 TSKB
                1  |  GRG   | ONSA
                1  |  JPL   | 32
                1  |  MIT   | BAKO IRKJ
                2  |  ALL   | 1 25
                2  |  COD   | 3 6 26 3 6 26 WTZR BRFT RAMO
                2  |  EMR   | MIZU TWTF WTZR
                2  |  ESA   | 3 6 26 UNSA
                2  |  GFZ   | 3 13 14 27 ALGO ANKR BRUS CHUR CONZ DARW FAA1 GRAZ
                2  |  GFZ   | HOFN HRM1 MATE NANO NYAL REYK TLSE TSKB VILL WSRT
                2  |  GFZ   | YAR2
                2  |  GRG   | PIE1 TWTF
                2  |  JPL   | 6 32 AREQ
                2  |  MIT   | 29 29 IRKT NRC1 TOW2
                3  |  COD   | 3 26 3 26 WTZR
                3  |  EMR   | IRKT WTZR
                3  |  ESA   | 3 6 26
                3  |  GFZ   | 3 MAW1 NLIB ONSA UNSA VESL
                3  |  GRG   | ONSA
                3  |  JPL   | 32
                3  |  MIT   | 19 19 IRKJ USNO
                3  |  NGS   | 1
                4  |  ALL   | 1 1 5
                4  |  COD   | 3 6 26 3 6 26 WTZR ADE1 SPT0
                4  |  EMR   | 25 25 WTZR
                4  |  ESA   | 6 26
                4  |  GFZ   | 14 17 CHUR FAA1 GRAZ UNSA
                4  |  GRG   | ONSA
                4  |  JPL   | 32 VESL
                4  |  MIT   | 19 19 TWTF
                5  |  ALL   | 1
                5  |  COD   | 3 3 26 WTZR
                5  |  EMR   | 25 25 WTZR
                5  |  ESA   | 3 26 ZWE2
                5  |  GFZ   | 3 6 8 BJFS BRUS DAEJ HYDE NICO REUN SUTM SUWN UNSA
                5  |  GFZ   | ZECK
                5  |  GRG   | ONSA
                5  |  MIT   | 6 19 19
                6  |  ALL   | 1 5
                6  |  COD   | 3 3 6 26 WTZR
                6  |  EMR   | 25 WTZR
                6  |  ESA   | 3 6 26
                6  |  GFZ   | 3 FAA1 HOFN MCM4 NYA1 UNSA VESL
                6  |  GRG   | ONSA
                6  |  JPL   | 32
                6  |  MIT   | TLSE

    
 5. New clock offsets and drifts were estimated for centres showing reference
    clock resets.  Note that only the largest clock offset and drift are output
    to the summary file.  However, the clock combination and the listed RMS
    include all the clock segments.  In summary, the following clock
    shifts/resets were noticed and accounted for:
    
               Day | Centre |  Time  |  Jump
               ----+--------+--------+-------------
                2  |  MIT   | ~00:30 | ~ -0.05 ns

 6. Velocity changes were estimated to alleviate the effects of modeling
    problems, experienced by all centres,in the Long Arc (LA) process.
    
             Velocity changes per day and affected satellites:
    
               Day |  0 |  1 |  2 |  3 |  4 |  5 |  6 |
           --------+----+----+----+----+----+----+----+
           PRN G05 |  2 |  2 |    |    |    |    |    |

 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  |     .1     .5    1.2     -10      1    -12    -.41
       EMR  |   10.8   -3.7   -2.7     122    -53     99    -.07
       ESA  |    4.2   -2.0    2.2       3    -51     45    -.16
       GFZ  |     .0     .7    1.3      13    -14     -1    -.30
       GRG  |    4.0     .5    4.0     -15      4     16     .11
       JPL  |    -.6     .1   -1.1      13     -8     14     .04
       MIT  |    3.7   -5.9   12.3      12      2    -18    -.37
       NGS  |    5.5   -2.2    4.9     -12    -41    -11    -.28
       SIO  |     .4   -5.6   -6.8    -115    -41     -9     .02


 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 1.1546.a). It also displays the computed satellite
position sigmas for the combined orbits (table 1.1546.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 2.1546.[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 3.1546.[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 5.1546.0-6).

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 1546 summary.                       (Aug 23, 2009 - Aug 29, 2009)

Table 1.1546.a   GPS week: 1546   MJD: 55066.000-55072.000

         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  231|    1     0    -1    34   -54     7  -.18    7    7 |    -271    -273     16     75
        |    0     0     0    17     9    18   .02           |     313     487
emr   81|    3     0    -5  -250    73   -20   .45   18   18 |    1072    -119     17     78
        |    1     1     1    23    15    41   .07           |    2705    1787
esa  135|    0    -1     2   -28    60     0   .33    8    8 |   -1780    2193     18    115
        |    0     0     1    19    13    20   .04           |    1284    2372
gfz  186|    1     1     3   -20    -6   -18  -.10   10   10 |     -40     472     27    119
        |    0     1     2    26    16     6   .01           |     314    1280
grg  110|    0     0    -3    29   -55     5  1.01   40   37 | 1428619    -211     78    225
        |    1     1     2    18    21    85   .03           | 3779623     412
igr  n/a|    0     0     0     6   -42   -63   .06    5    5 |   -1980    -989     20     68
        |    0     0     1    12    11    23   .04           |    1470    1683
jpl  126|    1     0    -9   -24   -37    26   .61   18   17 |     738    -106     19     97
        |    0     1     0    13    13    24   .05           |    2551    1660
mit  257|    0     0     0   -22   -57     0  -.25   10    9 |  -14816    -947     21    145
        |    0     0     1    22    18    16   .03           |     706    1292
ngs  223|    0     0     0    44    39    14  -.32   13    9 |   14448   -1374   2017   3589
        |    1     1     2    14    17    23   .04           |    1596    2991
sio  254|   -3     1     5   235    48   -15  -.11   16   17 |     ---     ---    ---    ---
        |    0     1     0    20    12    14   .04           |     ---     ---


Table 1.1546.b   GPS week : 1546   MJD: 55066.000-55072.000   

         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  |   13   11   14   10   10   11   13 |
   2  |    5    5    5    5    5    5    5 |
   3  |    6    6    5    6    6    6    6 |
   4  |    4    3    3    4    3    3    3 |
   5  |    0    0   19    0   14    9    9 |
   6  |    6    6    5    5    5    5    6 |
   7  |    5    5    4    4    4    4    4 |
   8  |    3    3    3    3    3    3    3 |
   9  |    4    4    4    4    4    4    3 |
  10  |    4    4    3    4    3    3    3 |
  11  |    4    4    4    4    4    4    4 |
  12  |    5    5    5    5    5    5    5 |
  13  |    5    4    5    4    4    4    5 |
  14  |    4    4    4    4    4    4    4 |
  15  |    5    5    5    5    5    5    5 |
  16  |    6    5    5    5    5    5    5 |
  17  |    5    4    4    4    5    4    4 |
  18  |    6    6    5    5    5    5    5 |
  19  |    5    4    4    4    4    5    4 |
  20  |    5    4    5    4    4    4    4 |
  21  |    6    5    5    5    5    5    5 |
  22  |    5    5    5    4    4    4    4 |
  23  |    5    4    5    5    4    4    5 |
  24  |    4    4    4    4    4    4    5 |
  25  |    8    9    7    6    7    8    9 |
  26  |    6    5    5    5    5    5    5 |
  27  |    4    3    4    4    4    3    4 |
  28  |    5    5    4    4    4    5    5 |
  29  |    5    5    5    5    5    5    4 |
  30  |    4    3    4    4    4    3    4 |
  31  |    5    4    5    4    5    5    6 |
  32  |    4    4    4    4    4    4    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 2.1546.0   GPS week: 1546   Day: 0   MJD: 55066.000                            

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  231|    1     0    -1    20   -66    -2  -.22    8    8 |    -622     351     26    102
        |                     15    25                       |
emr   81|    4    -2    -7  -223    72   -81   .35   17   17 |    -975     849     19    106
        |                    -14   -47                       |
esa  135|    0    -1     1    10    53    43   .28    9    9 |   -3242    3773     19    152
        |                      9   -30                       |
gfz  186|    2     4     6   -38    15   -12  -.11   12   12 |    -286     491     29    141
        |                    -45   -12                       |
grg  110|   -2     1    -6    27   -25  -115  1.03   42   42 |    -223     358     82    231
        |                     68    28                       |
igr  n/a|    0     0    -1    12   -49   -35   .07    6    6 |   -1137      -2     20     72
        |                    -18    -5                       |
jpl  126|    0     0    -9   -19   -51    28   .57   17   16 |   -1420    1165     18     95
        |                     17     6                       |
mit  257|    0     0     0   -46   -50     7  -.22   10   10 |  -16183    1718     21    160
        |                     12    25                       |
ngs  223|    2     2     3    57    17    20  -.32   16   11 |   14956     880   1922   4032
        |                    -88    26                       |
sio  254|   -4     0     5   233    56   -34  -.16   16   15 |     ---     ---    ---    ---
        |                   -136   -34                       |

Table 2.1546.1   GPS week: 1546   Day: 1   MJD: 55067.000                            

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  231|    1     0    -1    13   -53    -6  -.19    7    7 |    -196    -490     14     71
        |                     14    10                       |
emr   81|    6    -1    -6  -215    77   -54   .37   18   18 |      65   -2047     17     84
        |                    -45   -39                       |
esa  135|    0     0     2   -31    66    -3   .30    9    8 |   -1578    2263     19    129
        |                      9   -13                       |
gfz  186|    0     3     2    27   -26   -29  -.07   10   10 |    -491    2173     29    136
        |                    -67   -20                       |
grg  110|    0     0    -4    13   -37    56   .97   38   35 |      87     -81     75    230
        |                     27    -5                       |
igr  n/a|    0     0     0     3   -45   -53  -.00    5    5 |    -965   -2858     19     67
        |                     -6     4                       |
jpl  126|    0    -1    -8   -19   -17   -16   .59   18   17 |     -81   -1655     20     80
        |                    -38   -24                       |
mit  257|    0    -1     0   -45   -58    29  -.21    9    9 |  -14518   -2029     19    155
        |                      6    24                       |
ngs  223|    1     0     3    59    46    54  -.25   13   10 |   13818   -1271   1898   3892
        |                    -52   -12                       |
sio  254|   -4     0     5   209    47    -2  -.14   16   15 |     ---     ---    ---    ---
        |                   -121   -35                       |

Table 2.1546.2   GPS week: 1546   Day: 2   MJD: 55068.000                            

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  231|    1     0    -1    40   -56    29  -.21    7    7 |    -241    -174     13     68
        |                    -29     9                       |
emr   81|    2    -1    -5  -246    66   -38   .45   18   18 |   -2031     782     13     73
        |                    -21   -31                       |
esa  135|    0     0     2   -16    61   -10   .36    8    8 |   -1829     990     17    111
        |                    -14   -17                       |
gfz  186|    1     0     1   -45     4   -16  -.10   10   10 |     151    -723     25    116
        |                    -45   -52                       |
grg  110|    0     0    -4    56   -67    45  1.03   37   33 |     -31    -313     78    224
        |                    -19   -10                       |
igr  n/a|    0     0     0    30   -26   -72   .07    5    5 |   -4174       4     22     76
        |                    -38   -64                       |
jpl  126|    1     0    -8    -1   -44    52   .56   18   17 |   -2190     959     19    101
        |                      5    30                       |
mit  257|    0     0     0   -42   -50    -3  -.24   10   10 |  -14426   -1258     20    159
        |                     -2    15                       |
ngs  223|    0     1     0    46    35    12  -.31   12    8 |   11452    3471   1993   3282
        |                    -34    70                       |
sio  254|   -3     1     5   210    46   -29  -.14   16   18 |     ---     ---    ---    ---
        |                   -126   -31                       |

Table 2.1546.3   GPS week: 1546   Day: 3   MJD: 55069.000                            

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  231|    0    -1    -1    22   -42   -11  -.17    7    7 |     245    -889     15     74
        |                     12   -12                       |
emr   81|    2    -1    -4  -269    86   -18   .48   19   19 |    -790    1769     19     78
        |                      8   -52                       |
esa  135|    0     0     3   -47    65   -20   .35    8    8 |   -2267    2316     21    108
        |                     27    11                       |
gfz  186|    1     2     3   -41   -28   -13  -.09   10   10 |     124    -412     27    123
        |                    -36   -47                       |
grg  110|    1    -2    -5    20   -68   -81  1.02   37   36 | 9999999    -819     72    237
        |                     31    -7                       |
igr  n/a|    0     0     0    -8   -27   -31   .13    5    4 |   -3899     709     21     71
        |                     18    -8                       |
jpl  126|    0     0   -10   -39   -27    52   .63   19   18 |    -900    1493     19     96
        |                     11    -5                       |
mit  257|    0     0     0    12   -79     5  -.23    9    8 |  -14864   -1787     22    139
        |                    -21    20                       |
ngs  223|    0     0    -2    33    64    31  -.30   11    8 |   14327   -1315   1692   2994
        |                     -8    54                       |
sio  254|   -4     1     6   261    26     3  -.08   16   17 |     ---     ---    ---    ---
        |                   -147   -27                       |

Table 2.1546.4   GPS week: 1546   Day: 4   MJD: 55070.000                            

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  231|    1     0    -2    60   -62    34  -.16    7    7 |    -335    -384     13     62
        |                    -35    41                       |
emr   81|    2     0    -5  -273    98    -8   .49   18   18 |    2082    1715     14     61
        |                     -1   -70                       |
esa  135|    0    -1     0   -35    69    -6   .35    7    7 |      50    3730     18     95
        |                     13    -4                       |
gfz  186|    0     1     4   -30     0   -11  -.10   11   11 |     -91    2324     22    104
        |                    -54   -60                       |
grg  110|    1    -3     0    30   -89    -6  1.04   39   37 |      39     -75     83    222
        |                     27    41                       |
igr  n/a|    0     0     2     0   -48   -83   .03    6    5 |   -1988     655     18     58
        |                     21     2                       |
jpl  126|    1     3   -10   -41   -25     6   .58   19   18 |    1726    1250     19     94
        |                     20    12                       |
mit  257|    0     0     0   -17   -84   -11  -.27    9    8 |  -15169    -797     19    118
        |                    -12    37                       |
ngs  223|   -1     0     2    20    37   -11  -.30   12    8 |   15580   -3180   2183   3783
        |                     35   -14                       |
sio  254|   -2     1     5   240    41   -19  -.09   16   17 |     ---     ---    ---    ---
        |                   -144   -38                       |

Table 2.1546.5   GPS week: 1546   Day: 5   MJD: 55071.000                            

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  231|    1     0    -2    53   -59    15  -.17    6    6 |     -85    -693     22     81
        |                    -13     2                       |
emr   81|    2     1    -4  -270    50    25   .49   17   17 |    4437   -1788     24     83
        |                     -5   -19                       |
esa  135|    0    -1     2   -43    71     0   .38    8    8 |    -362   -2411     22    113
        |                    -11    19                       |
gfz  186|    0     0     3   -15   -12   -24  -.11    9    9 |     460    -585     29    110
        |                    -73   -40                       |
grg  110|   -3     0     1    49   -44     3   .98   42   37 |     494    -646     82    223
        |                     20    34                       |
igr  n/a|    0     0     1     8   -56   -89   .05    5    4 |    -543   -2665     22     68
        |                     13    -1                       |
jpl  126|    2     1    -9   -28   -52    26   .66   18   17 |    3943   -1936     19    110
        |                    -52    49                       |
mit  257|    0     0     2   -14   -32   -21  -.27   10    9 |  -13978   -1856     26    160
        |                     -3     8                       |
ngs  223|   -3     0     0    39    19    -9  -.40   12    9 |   16536   -5971   2209   3492
        |                     19    34                       |
sio  254|   -2     2     6   238    67   -20  -.10   17   18 |     ---     ---    ---    ---
        |                   -129   -43                       |

Table 2.1546.6   GPS week: 1546   Day: 6   MJD: 55072.000                            

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  231|    0     0    -2    31   -40    -4  -.17    7    7 |    -667     367     15     70
        |                    -12   -20                       |
emr   81|    1     2    -3  -253    64    30   .53   18   18 |    4716   -2119     16     67
        |                    -23   -35                       |
esa  135|    1    -1     4   -36    34    -4   .33    8    8 |   -3237    4693     16     98
        |                     16    29                       |
gfz  186|    0     0     0    -2     1   -18  -.10   10   10 |    -152      40     30    108
        |                    -62   -50                       |
grg  110|    0    -2    -2     5   -58   136  1.03   43   39 |     -29      96     76    208
        |                     50    40                       |
igr  n/a|    0     0     1    -2   -45   -76   .06    5    5 |   -1160   -2767     21     70
        |                     10     5                       |
jpl  126|    3     0    -8   -22   -46    36   .68   18   17 |    4089   -2019     21    109
        |                    -41    22                       |
mit  257|   -1     0     2    -4   -43    -8  -.30    9    8 |  -14574    -622     23    129
        |                      3    19                       |
ngs  223|    0    -2     0    55    55     1  -.32   13    8 |   14467   -2233   2227   3650
        |                     11    40                       |
sio  254|   -3     2     6   255    52    -4  -.06   19   19 |     ---     ---    ---    ---
        |                   -138   -39                       |

       
       
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 3.1546.0   GPS week: 1546   Day: 0   MJD: 55066.000                            

        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  ---  ---   26  ---   22  ---   18   38  ---   13 |    14  ---  ---   33  ---   19  ---   17   32  ---    14
   2  |    7   16    7   12   58    7   20    9   15   23    5 |    20   31   27   24   50   22   31   22   21   22    22
   3E |   13   21   11   13   57    5   16    8   29   10    5 |    19   34   23   21   31   19   28   19   36   23    20
   4  |    8   10    5   12   38    6    9   10   14   14    3 |    37   43   40   46   25   41   41   42   42   38    39
  X5  |    5  ---  ---  ---  ---  366  ---  ---  ---  ---    0 |    98  ---  ---  ---  ---  217  ---  ---  ---  ---    98
   6E |   12   18   10   13   65    7   16   11   25   14    5 |    33   47   45   38   52   41   50   44   46   44    40
   7  |    9   20   11   14   32    6   14    9   14   13    4 |    20   32   23   28   37   23   28   21   22   20    21
   8  |    6    9    7    6   18    3    8    8   14   13    3 |    19   28   21   22   21   22   25   23   24   17    20
   9  |   10   11    6   10   42    4    9    9   10   16    3 |    20   25   24   29   22   24   25   28   28   25    23
  10  |    8   10    8    9   37    7    9   11   16   15    4 |    26   29   30   32   22   29   26   29   29   30    27
  11  |    7   15    8   11   50    6   15    7   16   14    4 |    27   35   30   31   46   30   37   28   31   28    28
  12  |    8   18   12   18   45    7   20   10   16   16    5 |    18   28   21   19   37   18   30   20   14   25    17
  13E |    7   18   10   11   33    7   19   12   11   14    4 |    13   28   20   15   36   15   25   12   18   16    14
  14E |    4   12   10   10   34    5   20   10   11    9    4 |    13   20   21   15   31   15   22   12   13   14    13
  15E |    7   23   10   12   46    7   23   11   15   15    5 |    10   28   17   17   35   13   23   17   14   16    13
  16  |    8   25    9   18   36    5   23    9   15   20    5 |    21   39   23   18   44   21   37   20   27   23    22
  17E |    9   21    9   14   36    6   19   10   12   14    4 |    12   27   18   16   36   13   26   15   13   20    14
  18  |    8   22   10   13   32    6   23    8   15   26    5 |    19   34   28   28   33   24   32   24   26   29    22
  19E |    7   21    8   13   35    5   19   13   17   13    5 |    22   33   26   25   36   21   31   20   24   27    22
  20  |    9   19   11   15   35    7   16   12   15   19    5 |    21   27   25   31   27   22   23   22   26   20    21
  21  |   11   18    7   11   35    5   23   10   13   27    5 |    17   29   21   23   39   20   31   22   25   25    19
  22  |    9   20   12   12   26    7   20   12   10   17    5 |    21   34   30   31   34   27   32   28   30   22    24
  23E |    8   14   11   11   31    6   18   12   18    9    4 |    21   29   25   23   36   20   26   16   20   21    19
  24  |    8   12    7    9   47    6   13   10   14   22    4 |    30   30   30   36   21   30   22   34   37   29    29
 X25  |   17   18   15   17  ---   14  ---    9   30  ---    7 |    19   30   18   33  ---   22  ---   20   41  ---    18
  26E |   10   24   11   10   82    7   17   11   25   15    5 |    20   34   22   27   26   22   30   25   33   24    21
  27  |    9   12    7   10   49    3    8    7   10   13    3 |    24   31   30   33   24   30   31   32   31   32    28
  28  |    6   16    9   15   35    4   16   10   13   20    4 |    17   31   19   18   44   18   29   16   20   24    17
  29E |    9   22    9   14   32    5   24   11   14   10    5 |    12   26   18   17   30   12   26   13   13   17    13
  30  |    9   12    8    9   37    4   10   11   14   17    4 |    19   24   24   22   32   20   25   21   24   18    20
  31  |    8   19    7   11   34    4   20    8   10   15    4 |    20   29   24   26   38   20   28   20   18   17    19
  32  |    8   13    5   14   27    6   13   10   14   13    4 |    14   19   18   24   22   16   19   16   16   17    14
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |    8   17    9   12   42    6   17   10   16   16      |T   22   30   24   25   33   28   28   22   25   23    23
 WRMS |    8   17    9   12   41    6   16   10   11   15      |NE  24   30   25   27   32   32   29   24   26   24    25
 MEDI |    8   18    9   12   36    6   17   10   14   15      |MD  20   29   23   25   34   21   28   21   25   23    20

Table 3.1546.1   GPS week: 1546   Day: 1   MJD: 55067.000                            

        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  ---  ---   27  ---   17  ---   15   27  ---   11 |    16  ---  ---   32  ---   20  ---   17   19  ---    13
   2  |    6   18    8    8   47    6   21   10   14   25    5 |    16   28   24   20   39   19   30   18   18   20    18
   3E |   12   16    7   13   74    4   17    9   29   10    5 |    20   30   25   21   31   19   29   23   35   25    21
   4  |    4   14    7    6   26    4   10    7   11   14    3 |    28   32   29   27   27   27   26   30   23   32    28
  X5  |    4  ---  ---  ---  ---  177  ---  ---  ---  ---    0 |    86  ---  ---  ---  ---  146  ---  ---  ---  ---    86
   6E |   11   18   11   14   64    5   16   13   24   15    5 |    22   41   36   29   40   26   39   31   32   32    29
   7  |    7   18    6   15   37    6   18    8   13   12    4 |    19   32   24   23   36   20   28   19   21   19    19
   8  |    5   11    7    7   18    4    7    7   10    9    3 |    17   23   18   17   21   17   24   20   17   16    16
   9  |    6   12    8    6   40    5    8   10   11   15    3 |    21   25   22   26   23   22   24   26   23   25    22
  10  |    5   10    7    8   28    5    8   11   11   12    3 |    18   24   19   22   24   22   21   22   23   24    20
  11  |    6   16    6    9   54    5   16    8   13   13    4 |    18   29   22   20   42   18   31   16   22   16    19
  12  |    6   17   11   14   33    5   19   11   12   17    4 |    17   26   14   19   33   14   26   18   15   20    15
  13E |    8   18    7    8   36    6   19   10   10   12    4 |    11   27   15   11   38   11   23    9   13   12    11
  14E |    6   13   12    9   24    3   19    9   11   11    4 |    18   25   24   20   35   18   24   18   21   17    18
  15E |    6   21    9   11   29    5   24   13   12   13    4 |    11   23   16   15   29   12   22   20   14   21    13
  16  |    7   27    9   11   27    4   23    9   13   18    5 |    14   35   22   15   35   16   34   15   22   16    18
  17E |    6   20    8    9   34    4   19    8   11   13    4 |    23   31   24   21   40   20   31   25   24   25    23
  18  |    6   21   14   11   30    5   24   12   16   26    5 |    19   32   28   26   30   22   32   20   29   18    21
  19E |    7   19    8   12   22    5   20    8   13    9    4 |    18   29   22   22   25   20   30   19   21   24    19
  20  |    7   18    9    9   33    7   15   10    9   19    4 |    19   25   22   25   25   19   25   16   22   16    18
  21  |    7   19    9   10   36    4   24    9   10   24    5 |    15   27   23   19   36   17   29   21   23   20    18
  22  |    9   20   12    8   29    6   23    9    9   15    4 |    18   33   26   23   31   20   31   23   25   17    20
  23E |    7   18   10   10   27    6   20    8   11   11    4 |    12   26   18   17   29   14   21   14   18   16    14
  24  |    4   11    8    8   48    5   13   11   10   22    4 |    28   30   29   33   19   29   23   30   33   26    28
 X25  |   10   21   18   17  ---   12  ---   13   34  ---    8 |    20   35   28   28  ---   20  ---   21   31  ---    19
  26E |   10   21   10    7   48    5   17    9   19   16    5 |    14   27   20   19   24   18   26   17   27   16    16
  27  |    7   11    8    7   52    5    8    8   11   12    3 |    25   29   26   27   37   26   29   28   26   29    26
  28  |    7   20    8   11   28    5   17    8   12   18    4 |    14   28   16   16   35   13   26   13   15   19    13
  29E |    8   24   11   11   26    3   25    9    8   11    5 |    22   31   26   27   38   24   32   25   27   28    25
  30  |    5   10    7    6   24    3   10    9   10   16    3 |    17   19   20   19   25   17   23   18   19   18    18
  31  |   10   18    6   10   33    6   19    9    7   15    4 |    19   30   19   20   41   17   28   15   16   15    17
  32  |    7   17    6    9   24    5   14   10   10   13    3 |    13   19   15   17   18   13   19   14   17   14    13
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |    7   18    9   10   38    5   18    9   13   16      |T   20   28   22   21   31   23   27   20   22   20    21
 WRMS |    7   18    8   10   35    5   17    9   10   15      |NE  21   28   22   22   30   25   26   20   21   20    22
 MEDI |    7   18    8    9   33    5   18    9   11   14      |MD  18   28   22   21   31   19   26   19   22   19    18

Table 3.1546.2   GPS week: 1546   Day: 2   MJD: 55068.000                            

        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  |   21  ---  ---   31  ---   20  ---   16   29  ---   14 |    16  ---  ---   35  ---   19  ---   18   33  ---    17
   2  |    5   21    6    6   49    4   22   11    9   24    4 |    16   34   26   19   42   18   30   17   18   21    19
   3E |   12   18    6    9   70    4   17    8   28    7    5 |    28   35   31   28   37   28   34   28   47   28    29
   4  |    6   11    6    6   25    4   12    8   11   12    3 |    33   38   35   38   30   37   32   37   42   37    35
  X5  |   22  ---  ---  ---  107   19  ---   37   19  ---   19 |   110  ---  ---  ---   18  115  ---    4    7  ---   109
   6E |   10   16    8   10   51    4   16   11   20   12    4 |    26   40   37   30   56   31   41   35   42   34    32
   7  |    7   18    8   11   26    4   16   10    9   11    4 |    20   31   23   26   37   20   26   23   19   23    20
   8  |    5   12    5    8   13    3    8    7   10   10    3 |    13   22   17   19   25   17   17   20   22   21    16
   9  |    9   12    5   13   33    4   10    8    8   14    3 |    20   24   23   22   26   21   23   24   28   19    21
  10  |    6   11    6    7   46    5    8   11    8   12    3 |    22   24   25   24   21   23   22   24   25   27    22
  11  |    5   16    7   10   49    5   16    7    7   12    3 |    22   33   25   25   41   28   31   24   25   25    24
  12  |    7   18   12   16   33    6   19   10   10   17    5 |    16   26   15   17   33   12   25   16   16   18    13
  13E |    5   15    8   13   29    5   20   13   13   15    4 |    12   25   17   18   39   18   25   13   19   20    14
  14E |    6   16    9   10   31    4   18   10    8   16    4 |    15   24   20   19   30   17   24   20   20   18    16
  15E |    7   22    9   13   38    5   23   11   10   12    4 |    10   28   18   20   37   16   23   17   18   19    14
  16  |    6   27    6   15   27    5   21    9   10   19    5 |    20   36   23   15   40   20   33   20   23   19    21
  17E |    7   17    6   10   50    5   19   10   16   12    4 |    18   29   19   17   55   17   25   18   18   19    16
  18  |    7   18   10    8   36    4   24   15   11   25    5 |    19   31   24   23   30   21   31   22   25   20    19
  19E |    6   21    8    9   24    5   17    9    9    8    4 |    15   32   22   21   29   21   27   19   22   19    18
  20  |    7   19    8    8   31    5   18   10   10   20    4 |    18   26   21   22   29   21   25   21   19   21    19
  21  |    7   24    6    9   33    6   22    9   10   24    5 |    16   32   21   18   33   17   28   18   22   18    17
  22  |    7   19   10   10   45    4   23    9    8   14    4 |    17   31   25   25   34   22   30   23   22   19    20
  23E |    7   19   11   10   25    5   20   12   11   14    4 |    12   25   21   21   29   15   20   17   17   21    15
  24  |    5   14    9    9   41    7   11   10   11   24    4 |    30   33   27   32   19   29   25   34   37   25    29
 X25  |    8   30    9   14  ---   19  ---   13   24  ---    7 |    17   37   22   25  ---   30  ---   19   31  ---    19
  26E |   11   21    8    9   44    6   16   10   19   15    5 |    12   26   17   16   30   15   26   17   24   17    14
  27  |   10   12    5   11   33    5   10    7    9   11    3 |    19   23   22   21   29   20   23   21   25   18    20
  28  |    6   21    8    8   35    5   18    7   14   16    4 |    15   30   17   19   42   18   27   16   19   22    16
  29E |    6   26    8   16   29    7   26    8    8   16    5 |    24   37   29   28   37   24   34   28   31   30    27
  30  |    7   12    6    8   21    3   10    8   10   15    3 |    16   21   18   20   25   18   21   17   24   14    17
  31  |    7   23    8   13   32    6   17   10   10   16    4 |    20   34   25   26   37   23   28   22   22   18    21
  32  |    6   16    7    6   27    6   15   10   12   13    3 |    15   22   20   16   23   18   20   18   18   19    16
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |    7   18    8   10   37    5   18   10   12   16      |T   21   29   22   22   33   24   26   20   24   21    22
 WRMS |    7   18    8   10   33    5   17   10    8   18      |NE  23   29   22   23   30   25   26   20   23   21    24
 MEDI |    7   18    8   10   33    5   17   10   10   14      |MD  17   30   22   21   30   20   26   20   22   20    19

Table 3.1546.3   GPS week: 1546   Day: 3   MJD: 55069.000                            

        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  ---  ---   23  ---   18  ---   15   14  ---    9 |    15  ---  ---   23  ---   18  ---   22   21  ---    15
   2  |    6   19   11    9   53    5   24    8    9   25    5 |    19   33   27   25   49   25   33   19   25   23    22
   3E |   13   20    8   12   61    6   20    9   23   11    5 |    16   29   23   22   32   20   31   18   40   22    21
   4  |    5   15    6    8   24    6   15    6   10   14    3 |    28   33   33   35   23   29   30   31   32   29    30
  X5  |    4  ---  ---  ---  ---   78  ---  ---  ---  ---    0 |   128  ---  ---  ---  ---  126  ---  ---  ---  ---   118
   6E |   11   19    8   11   63    5   18   11   20   16    5 |    26   40   38   31   53   32   41   34   42   37    32
   7  |    9   18    9   14   33    5   18   10    7   11    4 |    17   28   23   24   31   21   28   19   22   19    19
   8  |    9   13    5    8   14    4    9    6    7    9    3 |    17   29   24   28   25   25   27   25   26   23    22
   9  |    7   18    7    9   38    3   12   10    8   20    4 |    24   32   28   27   32   27   31   28   32   28    25
  10  |    6   14    9   11   40    4   14   11   11   10    4 |    22   31   32   29   22   29   28   28   32   29    27
  11  |    6   15    6   12   50    5   17    4   11    9    3 |    25   35   30   31   43   29   33   26   27   26    26
  12  |    5   21   13   12   34    5   23    9   10   17    4 |    19   31   19   21   34   21   33   21   24   24    19
  13E |    7   17    7   10   27    5   24   11    8   11    4 |    12   29   18   19   34   16   26   14   17   18    14
  14E |    6   11    8   12   22    3   17    8    6    9    3 |     9   19   18   16   25   13   22   12   14   13    11
  15E |    8   23    9   10   37    8   25   11    9   17    5 |    11   24   19   19   32   15   22   19   19   26    14
  16  |    6   27   11   14   30    3   23    9    9   19    5 |    20   38   24   18   41   22   35   20   23   20    21
  17E |    8   18    8    9   34    5   20    8    9   15    4 |    21   33   27   25   40   25   32   25   28   29    25
  18  |    7   20    8   14   39    4   23   14   13   22    5 |    16   29   20   27   31   18   28   19   22   16    17
  19E |    7   22    9   10   22    5   18    9    9    9    4 |    24   36   30   29   38   29   33   24   25   27    26
  20  |    6   18    7   10   39    5   18    8   10   19    4 |    21   27   26   29   31   24   26   22   22   24    22
  21  |    7   22    7    8   32    4   24    7    9   24    5 |    16   32   25   22   36   20   31   18   24   18    19
  22  |    8   20    9   10   40    4   21    7    8   14    4 |    18   30   26   29   33   21   28   21   24   18    21
  23E |    7   24    8   10   30    5   21   10   11   12    4 |    11   24   18   18   32   15   21   15   17   20    13
  24  |    7   18    9    6   39    3   14    7    9   22    4 |    32   35   36   38   20   33   27   34   38   28    33
 X25  |   10   13   13   17  ---   10  ---   11   17  ---    6 |    19   25   26   36  ---   30  ---   25   28  ---    22
  26E |   10   16    8   11   55    4   16    8   18   14    4 |    14   26   19   20   29   18   27   21   27   20    17
  27  |    7   20    6    8   36    4   13   12    9   19    4 |    31   38   34   33   36   34   38   35   37   37    32
  28  |    9   20    7   10   24    4   18    7   10   18    4 |    11   27   16   16   37   13   28   15   20   20    14
  29E |    8   26   11    8   34    4   27    9    9   10    4 |    23   33   25   26   37   26   33   27   32   29    26
  30  |    6   14    8    6   22    4   12    8    9   15    3 |    15   19   18   19   23   16   21   18   25   14    16
  31  |    6   23    8   10   34    4   18   10    6   15    4 |    16   31   24   21   40   21   28   20   21   18    19
  32  |    5   13    6   10   29    4   14    9    8   11    3 |    15   21   23   20   25   18   21   17   16   19    16
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |    7   19    8   10   37    5   19    9   11   16      |T   22   29   24   25   33   25   29   22   25   23    24
 WRMS |    7   19    8   10   36    4   18    8    8   17      |NE  24   30   25   26   32   28   29   23   25   22    26
 MEDI |    7   18    8   10   34    4   18    9    9   15      |MD  18   30   24   25   32   21   28   21   25   23    21

Table 3.1546.4   GPS week: 1546   Day: 4   MJD: 55070.000                            

        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  ---  ---   18  ---   30  ---   15   13  ---    9 |    15  ---  ---   19  ---   21  ---   18   15  ---    11
   2  |    5   20   10    9   49    6   21    9    9   24    4 |    18   30   26   21   46   21   30   16   18   17    19
   3E |   11   20    8   12   71    6   21   14   28   14    6 |    37   50   44   39   44   41   46   41   48   42    40
   4  |    5   11    6   11   33    5   11    7    8   12    3 |    32   34   30   40   22   33   27   32   34   31    31
  X5  |   14  ---   13  ---  ---   25  ---  ---  ---  ---   14 |    83  ---   45  ---  ---   80  ---  ---  ---  ---    77
   6E |   10   21    6   11   50    5   19   10   22   15    5 |    22   41   29   26   42   25   40   28   31   29    26
   7  |    6   19    9    8   39    5   17    8   10   12    4 |    16   28   20   19   35   16   26   18   14   15    15
   8  |    6   11    6    8   22    4    6    6    9    9    2 |    22   25   22   21   26   17   21   21   16   20    19
   9  |    8   14    7    7   53    6   11    9   12   18    4 |    21   29   23   26   31   21   22   27   28   30    22
  10  |    4   10    5    8   47    4    7   10   10   11    3 |    21   26   24   30   23   23   21   21   26   23    22
  11  |    6   17    5   10   59    3   16    6    8   10    3 |    24   31   26   27   46   22   28   21   24   22    22
  12  |    8   19   11   17   35    4   20   10   12   16    5 |    18   28   13   17   31   16   26   19   16   19    14
  13E |    6   17    7   11   27    6   21   13    9   13    4 |    13   22   17   19   35   14   23   14   17   15    12
  14E |    7   11    6   12   29    5   21    7    8    9    3 |    14   25   19   18   32   14   24   17   14   14    14
  15E |    7   23    6   10   29    6   24    7   13    9    4 |    14   24   18   21   28   14   21   18   15   20    14
  16  |    7   26    8   14   30    7   26    8    7   20    5 |    17   34   20   14   44   16   31   14   17   18    17
  17E |   10   13    9   11   23    6   22    7   14   11    4 |    12   22   21   18   27   14   21   14   17   17    14
  18  |    7   21    8   12   41    5   23   12    8   21    5 |    17   31   21   24   32   17   29   19   18   13    17
  19E |    7   22    7   10   22    6   21    8   11   13    4 |    16   30   17   14   28   12   24   14   14   17    14
  20  |    7   19    6   11   39    5   18    7    8   18    4 |    20   26   21   23   26   20   21   20   21   19    19
  21  |    5   21    8    9   29    5   24    8    8   26    4 |    15   33   21   18   32   17   29   17   19   14    16
  22  |    6   18    7   10   42    5   23    6    7   16    4 |    16   30   22   27   33   20   31   21   21   17    20
  23E |    6   21    7   11   41    5   21    9    8   13    4 |    16   25   18   22   40   15   20   17   15   18    15
  24  |    5   15    6   10   35    4   13   10    9   23    4 |    30   33   28   35   26   32   24   36   38   24    30
 X25  |    5   19   18   20  ---   10  ---    9   20  ---    6 |    17   23   22   29  ---   11  ---   18   26  ---    15
  26E |    9   24    7   12   46    7   15    9   21   13    5 |    14   32   18   20   33   19   26   22   31   21    17
  27  |    9   15    6    8   52    6   11    9   12   16    4 |    21   31   26   30   27   24   26   29   28   32    25
  28  |    6   16    8    8   31    5   16    6   12   19    4 |    13   24   16   15   38   12   25   13   13   19    12
  29E |    7   22    9   15   34    9   27    9   12   12    5 |    17   27   17   16   29   19   25   18   20   18    16
  30  |    6   15    7    8   26    5   11    9    8   16    3 |    17   24   20   19   23   17   19   19   19   13    16
  31  |    6   21    6   13   25    8   19   11   11   17    4 |    18   33   24   23   38   20   29   18   22   17    19
  32  |    7   14    4    9   27    6   16    8    8   12    3 |    16   20   19   18   18   15   17   18   19   17    15
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |    7   18    7   11   39    6   19    9   12   16      |T   20   29   22   22   32   21   25   20   21   20    20
 WRMS |    7   18    7   11   37    5   18    8    8   17      |NE  22   28   23   23   31   22   25   20   21   20    21
 MEDI |    7   19    7   11   35    5   19    9   10   14      |MD  17   28   21   21   32   17   25   18   19   18    17

Table 3.1546.5   GPS week: 1546   Day: 5   MJD: 55071.000                            

        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  ---  ---   21  ---   26  ---   15   20  ---   10 |    15  ---  ---   25  ---   23  ---   21   16  ---    16
   2  |    7   18    6    7   33    4   23   10   10   24    4 |    19   37   28   24   40   24   37   20   24   20    22
   3E |   10   19   13   10  110    7   20   17   22   20    5 |    28   45   36   34   35   33   42   38   39   41    32
   4  |    4   11    7    6   26    4   13    6    9   13    3 |    19   28   26   26   21   22   22   24   27   22    22
  X5  |   16  ---   12  ---   55   15  ---   17   20   31    9 |    73  ---   44  ---   35   69  ---   17   23   18    68
   6E |    8   18   11    9   58    5   16   10   21   16    5 |    25   40   35   30   44   30   42   31   33   33    30
   7  |    6   17    9    6   51    4   17   10    9   13    4 |    13   26   18   15   40   13   27   16   10   12    12
   8  |    5   10    7    6   26    5    8   12    9   12    3 |    21   28   22   24   32   24   27   26   23   25    21
   9  |    5   11    9    9   50    3    9    9   10   14    3 |    27   33   30   31   37   30   31   33   36   33    29
  10  |    6   12    4    5   38    4    8    8    9   15    3 |    17   26   26   24   22   21   25   21   23   21    20
  11  |    5   15    9    7   58    3   17    9    9   12    3 |    19   31   27   25   50   23   31   21   21   21    21
  12  |    6   18   11   11   32    6   21   10   11   17    4 |    19   30   19   20   32   20   30   21   22   21    18
  13E |    5   19    7    7   24    6   21   12   11   12    4 |     9   27   14   14   35   12   25   10   12   12     9
  14E |    6   15    6    8   25    4   21    8    9    8    3 |     9   23   17   15   34   11   23    9   15   11    11
  15E |    9   19    9    9   41    5   25   15    9   21    5 |    12   26   22   20   27   14   22   25   20   29    16
  16  |    7   23    9   16   23    5   22    6   12   22    5 |    19   33   24   19   37   20   33   16   19   20    19
  17E |    7   16   10    9   29    4   22    7    7   10    4 |    18   34   26   25   38   20   30   22   18   23    21
  18  |    7   18    7   13   46    4   21   12   13   21    4 |    13   30   21   23   32   15   30   17   24   14    16
  19E |    5   18   14    8   27    4   19    7   11   14    4 |    21   32   31   26   45   25   31   20   22   25    23
  20  |    6   17    6    9   36    4   19    7    8   18    4 |    18   28   22   23   28   18   25   20   22   17    18
  21  |    5   19    6   10   33    5   24    9   14   27    5 |    11   29   19   18   32   16   29   16   19   13    14
  22  |    7   16    7   10   49    4   20    7   10   16    4 |    12   27   19   22   34   17   29   18   20   17    16
  23E |    6   19    6    7   33    4   19   11   12   12    4 |    14   28   20   19   37   17   23   17   20   19    15
  24  |    5   15    6    7   24    4   11   13   12   24    4 |    23   26   23   27   31   23   20   32   33   23    24
 X25  |    9   21   17   20  ---   12  ---   12   28  ---    7 |    22   30   26   23  ---   19  ---   24   33  ---    19
  26E |    9   20    8   10   46    5   16    9   19   15    4 |    14   29   22   22   33   18   28   22   32   21    18
  27  |    5   12    5    9   48    4    9    7    9    9    3 |    32   37   34   32   43   34   37   36   40   37    34
  28  |    8   20   10    8   38    4   18    8   12   22    4 |    12   28   15   13   42   12   26   11   15   21    10
  29E |    5   20   10   11   28    5   25   11   11   12    4 |    23   28   26   21   42   26   31   25   31   27    24
  30  |    5   11    5    4   23    3    9   11   11   16    3 |    15   24   21   17   21   16   23   19   24   13    16
  31  |    6   21   11   12   29    5   18   20   14   17    5 |    15   30   23   23   40   17   29   18   21   14    17
  32  |    5   14    8    7   27    5   14    9    8   13    3 |    14   22   20   17   22   15   21   17   14   17    14
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |    6   17    8    9   42    5   18   10   12   17      |T   19   29   24   22   34   21   28   21   23   21    20
 WRMS |    6   17    8    9   37    4   17    9    9   18      |NE  20   29   24   22   33   22   28   21   23   19    21
 MEDI |    6   18    8    9   33    4   19   10   11   15      |MD  18   28   23   23   35   20   29   20   22   21    18

Table 3.1546.6   GPS week: 1546   Day: 6   MJD: 55072.000                            

        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  |   18  ---  ---   35  ---   18  ---   15   23  ---   13 |    16  ---  ---   35  ---   13  ---   17   13  ---    12
   2  |    8   20   10    8   43    4   22    7   12   25    4 |    21   33   25   22   50   22   33   20   20   20    20
   3E |   11   18    8   12  117    6   19   13   22   20    5 |    44   50   49   39   49   44   55   43   48   48    44
   4  |    6   12    9    6   39    3   13    4    9   16    3 |    34   36   40   39   24   35   33   35   36   30    34
  X5  |   24   28   11  ---   50   20   25   13   14   35    8 |    83   23   44  ---   34   66   21   24   19   21    73
   6E |   11   19    8   12   66    5   15   15   21   20    5 |    29   45   38   34   51   34   45   37   41   40    34
   7  |    8   20    9    8   38    3   16    9   11   18    4 |    17   28   23   22   34   18   28   18   18   15    17
   8  |    4   12    8    8   26    3   10    6   12   15    3 |    15   25   21   19   25   16   23   18   19   13    16
   9  |    8   14    6    6   40    6   10    7    6   17    3 |    24   30   23   24   32   22   28   24   28   20    23
  10  |    4   13    7    9   30    3    8    5    7   18    3 |    24   31   30   32   23   29   28   27   26   27    27
  11  |    5   13    5   10   63    4   16    9   10   13    3 |    28   37   32   31   52   29   36   29   29   28    28
  12  |    6   19   12   14   32    5   21    9   15   16    5 |    20   33   17   19   36   18   31   20   21   21    17
  13E |    5   19    9   11   24    5   23    7   12   17    4 |    13   28   20   16   37   14   28   13   15   17    14
  14E |    5   12    6   11   27    4   19    6   12    8    3 |     9   22   17   15   34   11   21    9   12   11    10
  15E |    7   18    9   10   29    7   21   11    6   17    4 |    13   22   16   18   25   10   20   17   12   22    12
  16  |    8   21    9   15   25    6   25    7   11   25    5 |    20   36   26   19   37   22   36   18   23   22    21
  17E |    8   16    8    9   28    4   22    8   12   12    4 |    13   25   18   18   32   13   25   11   18   15    14
  18  |    8   19    9   10   42    3   22    7   12   24    4 |    16   28   24   25   34   18   28   20   24   15    18
  19E |    6   18    8    9   20    5   22   10    9   17    4 |    24   36   30   30   43   25   38   26   26   31    27
  20  |    6   19    8   11   32    5   19    8    9   19    4 |    25   29   28   30   28   26   29   27   29   29    25
  21  |    6   21    8   10   34    6   26    9   11   29    5 |    16   33   22   21   37   17   33   18   19   18    17
  22  |    7   18    9    8   51    3   19    6   12   19    4 |    18   28   28   27   37   21   28   21   25   18    21
  23E |    6   22    9    9   30    6   20   11   14   17    4 |    12   24   15   14   37   12   21   17   19   20    12
  24  |    6   15    6    8   23    5   11   16    8   27    4 |    29   33   31   35   28   30   25   37   34   28    30
 X25  |   11   19   25   24  ---   12  ---   17   25  ---    9 |    28   37   42   38  ---   23  ---   24   25  ---    28
  26E |   10   21    9    9   62    5   14   11   23   14    5 |    22   31   19   21   34   21   30   21   29   24    20
  27  |    8   15    6    6   47    6   10    8    8   16    3 |    19   29   21   20   34   19   25   22   22   21    19
  28  |    7   18    8    7   36    3   17    7   14   27    4 |    13   28   18   15   42   13   27   14   17   26    13
  29E |    4   18    8   12   25    4   25    6    8   17    4 |    19   31   22   20   29   19   30   18   19   17    18
  30  |    5   13    6    8   24    3   10    9   13   15    3 |    17   24   21   20   23   17   22   21   23   12    18
  31  |    6   25    9   15   30    5   22   17   14   17    5 |    18   33   24   27   38   20   30   24   20   18    21
  32  |    6   14    9    9   21    5   15    6   10   16    3 |    20   21   25   23   26   18   23   21   26   26    21
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |    7   18    8   10   43    5   18    9   13   19      |T   22   30   26   24   34   22   29   22   23   22    22
 WRMS |    7   18    8   10   39    5   17    8    8   19      |NE  23   30   26   25   33   23   28   22   23   21    23
 MEDI |    6   18    8    9   32    5   19    8   12   17      |MD  19   30   24   22   34   19   28   21   22   21    20



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 4.1546   GPS week: 1546   MJD: 55066.0-55072.0

CENT| CLK EPO  |        BRUS       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3043 |U    8    10    25 |U    5     8    22 |U    7     7    17 |
emr | emr 2878 |    10    11    32 |U    7     8    30 |     9     8    23 |
esa | esa 2921 |     8    10    29 |U    5     6    25 |     7     6    19 |
gfz | gfz 2936 |U    9    10    32 |U   12    17    89 |     9     8    21 |
grg | grg 2825 |     8    11    29 |U    7     7    31 |     8     8    21 |
igr | igr 2887 |     8    10    27 |     5     7    25 |     7     7    18 |
igs | igs 2864 |     8    10    28 |     6     7    27 |     7     6    18 |
jpl | jpl 2783 |     9    10    31 |U    6     7    30 |U    8     7    21 |
mit | mit 3017 |U   13    13    40 |U    7     8    27 |U   12    16    29 |



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 5.1546.0   GPS week: 1546   Day: 0   MJD: 55066.0

CENT| CLK EPO  |        BRUS       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3065 |     6    10    21 |     6    12    17 |     7     8    14 |
emr | emr 2868 |     9    10    41 |     5     8    20 |     9     7    22 |
esa | esa 2880 |     8     9    26 |     4     5    15 |     8     8    16 |
gfz | gfz 2937 |     8     8    30 |     9    14    50 |     8     7    15 |
grg | grg 2784 |     8    10    32 |     5     6    22 |     9     9    18 |
igr | igr 2847 |     7     9    25 |     4     8    14 |     8     8    17 |
igs | igs 2917 |     7    10    28 |     4     7    16 |     7     6    15 |
jpl | jpl 2772 |     8    10    41 |     5     7    18 |     9     7    17 |
mit | mit 2976 |     7     8    34 |     5     8    18 |     7     6    24 |

Table 5.1546.1   GPS week: 1546   Day: 1   MJD: 55067.0

CENT| CLK EPO  |        BRUS       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3053 |     9    11    26 |     6     7    25 |     6     6    15 |
emr | emr 2868 |    12    10    29 |     9    10    28 |     6     7    20 |
esa | esa 2880 |    10    10    22 |     5     7    25 |     6     6    18 |
gfz | gfz 2936 |    11    11    31 |    11    14    58 |    14    18    42 |
grg | grg 2784 |    10    10    23 |     6     6    29 |     7    12    20 |
igr | igr 2880 |    10    10    23 |     5     7    24 |     6     7    14 |
igs | igs 2852 |    10    11    23 |     5     7    22 |     6     5    15 |
jpl | jpl 2769 |    10     8    27 |     6     6    19 |     7     9    19 |
mit | mit 2976 |    11    11    24 |     6     8    27 |     8     7    20 |

Table 5.1546.2   GPS week: 1546   Day: 2   MJD: 55068.0

CENT| CLK EPO  |        BRUS       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3051 |    10    12    36 |     5    10    29 |     9    10    21 |
emr | emr 2862 |    14    13    38 |     7     7    61 |    10    12    29 |
esa | esa 2880 |    11    13    33 |     6     7    46 |     9    10    24 |
gfz | gfz 2934 |    12    12    46 |    16    27   306 |     9     9    23 |
grg | grg 2880 |    11    12    33 |     9     9    63 |     8    10    24 |
igr | igr 2904 |    11    13    35 |     6     6    46 |     9    10    26 |
igs | igs 2753 |    11    13    36 |     6     8    54 |     9    10    25 |
jpl | jpl 2770 |    11    13    33 |     8     8    69 |     9    10    27 |
mit | mit 3072 |    43    38   114 |    10     8    51 |    30    69    74 |

Table 5.1546.3   GPS week: 1546   Day: 3   MJD: 55069.0

CENT| CLK EPO  |        BRUS       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 2953 |     6    11    21 |     6     7    24 |     6     6    20 |
emr | emr 2864 |     9    12    30 |     7    10    29 |     8     6    24 |
esa | esa 2880 |     6    11    22 |     6     7    24 |     6     5    21 |
gfz | gfz 2936 |     6    10    22 |    12    16    59 |     7     6    19 |
grg | grg 2784 |     7    13    28 |     7     7    27 |     8     7    23 |
igr | igr 2910 |     6    11    22 |     6     7    24 |     7     5    19 |
igs | igs 2927 |     6    10    22 |     6     8    26 |     5     5    22 |
jpl | jpl 2771 |     7    10    25 |     8    10    26 |     7     6    22 |
mit | mit 2976 |     6    10    24 |     8    10    25 |     9     7    23 |

Table 5.1546.4   GPS week: 1546   Day: 4   MJD: 55070.0

CENT| CLK EPO  |        BRUS       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3062 |     7    11    18 |     5     6    21 |     7     4    12 |
emr | emr 2863 |     8     6    30 |     7     8    24 |     9     5    19 |
esa | esa 2976 |     8     9    21 |     5     6    23 |     8     4    15 |
gfz | gfz 2938 |     8     9    24 |    11    14    49 |     8     4    13 |
grg | grg 2784 |     8    10    22 |     6     7    23 |     8     5    15 |
igr | igr 2901 |     8    10    21 |     6     8    21 |     7     4    15 |
igs | igs 2865 |     7     7    25 |     6     8    23 |     7     4    15 |
jpl | jpl 2767 |     9     8    28 |     5     6    25 |     8     4    18 |
mit | mit 2976 |     8     8    24 |     6     8    21 |     9     7    20 |

Table 5.1546.5   GPS week: 1546   Day: 5   MJD: 55071.0

CENT| CLK EPO  |        BRUS       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3062 |     9    11    30 |     6     7    23 |     7     8    18 |
emr | emr 2863 |    12    13    36 |     9     7    29 |     9     8    26 |
esa | esa 2976 |    10    12    39 |     6     6    25 |     8     6    22 |
gfz | gfz 2937 |    10    11    39 |    12    14    57 |     8     8    21 |
grg | grg 2880 |     9    11    33 |     8     9    30 |     8     7    27 |
igr | igr 2892 |    10    10    37 |     7     5    27 |     8     7    21 |
igs | igs 2868 |    10    10    35 |     6     5    25 |     7     8    19 |
jpl | jpl 2768 |    10    10    37 |     7     6    26 |     8     8    22 |
mit | mit 3072 |     9     9    35 |     7     7    27 |     9     9    26 |

Table 5.1546.6   GPS week: 1546   Day: 6   MJD: 55072.0

CENT| CLK EPO  |        BRUS       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3060 |     6     6    24 |     4     5    15 |     7     7    16 |
emr | emr 2963 |     8     9    21 |     6     6    22 |     9     8    19 |
esa | esa 2976 |     7     8    38 |     4     6    15 |     7     7    15 |
gfz | gfz 2935 |     7     9    31 |    12    16    46 |     8     8    17 |
grg | grg 2880 |     6    13    30 |     6     6    24 |     8     7    17 |
igr | igr 2875 |     7    10    25 |     4     7    20 |     8     8    17 |
igs | igs 2868 |     7     8    30 |     5     9    21 |     7     7    15 |
jpl | jpl 2864 |     7     9    29 |     5     6    25 |     7     7    20 |
mit | mit 3072 |     6    10    28 |     6     6    21 |     9     7    18 |


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 6.1546   GPS week: 1546   MJD: 55066.500-55072.500

                                                         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 |     -12     -18     -75      29      3 |      -1     21
            |      27      24      97      55      6 |       3
emr   uuuuu |      38     -10     199     -42      5 |      27     36
            |      14      13     161      65     20 |       5
esa   uuuuu |      -4     -32      53      26      1 |      32     39
            |      17      12     120      58     16 |       8
gfz   uuuuu |      36      30     -25      46     -5 |      20     28
            |      21      12      91      49      6 |       3
grg   xxxxx |     -22     -54    -100      45     -6 |       1     22
            |      24      26     103     116     21 |       4
igr   xxxxx |       5     -25       0      41      3 |      10     24
            |      26      19      68      77      4 |       4
irf   xxxxx |      -4     -25     -47      -2     -4 |       4     20
            |       7       7      19      27      6 |       3
jpl   uuuuu |     -17     -14       1     -20      9 |      37     43
            |      21      28      57     111     17 |       6
mit   uuuuu |     -25     -22    -203     -89      0 |      13     24
            |      15      16      62      88      6 |       5
ngs   uuuuu |     -33      -8      30      83     -4 |      17     25
            |      27      40      53      92     12 |       6
sio   uuuuu |      31     110     120      -1      1 |      39     43
            |       9      17      83      80     13 |       4


Table 7.1546.0   GPS week: 1546   Day: 0   MJD: 55066.500

                                                         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 |     -33     -40      73      73     -4 |      -5     20
emr   uuuuu |      39     -11     -38      -2    -29 |      23     34
esa   uuuuu |      22     -34     182     -49     14 |      19     30
gfz   uuuuu |       4      20      81      37     -3 |      16     24
grg   xxxxx |     -36     -93      68     151     25 |      -6     20
igr   xxxxx |      -3      -7     106     139     -5 |       4     21
irf   xxxxx |      -8     -25     -42       4    -12 |       0     20
jpl   uuuuu |     -14     -42     -30      68      6 |      28     34
mit   uuuuu |     -33     -37    -209     -62     -8 |       7     22
ngs   uuuuu |     -34      63     -15     119     13 |       7     19
sio   uuuuu |      26     111       7       2    -14 |      34     40

Table 7.1546.1   GPS week: 1546   Day: 1   MJD: 55067.500

                                                         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 |     -22     -49     -45      65      4 |      -4     21
emr   uuuuu |      27      10     -16     -97    -11 |      22     33
esa   uuuuu |       1     -44     191      35      9 |      24     36
gfz   uuuuu |       8      32      93       7      3 |      17     26
grg   xxxxx |      -7     -62     -52     121    -28 |      -1     25
igr   xxxxx |     -16     -29      37      73      3 |       5     22
irf   xxxxx |     -12     -35     -13     -30    -10 |       1     21
jpl   uuuuu |      12       3     -48     -15      5 |      31     38
mit   uuuuu |     -36     -41    -220    -125     -4 |       8     23
ngs   uuuuu |       0      17     -63     252      6 |      11     24
sio   uuuuu |      23      86      35     -40    -12 |      35     41

Table 7.1546.2   GPS week: 1546   Day: 2   MJD: 55068.500

                                                         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 |     -12       0     -68      64     -5 |       2     20
emr   uuuuu |      28      -8     209     -99      1 |      28     35
esa   uuuuu |      14     -15      69      89     15 |      33     39
gfz   uuuuu |      49      16     -51      38     -2 |      24     30
grg   xxxxx |       7     -10    -141     110     -2 |       1     24
igr   xxxxx |      61       9     -25      45      8 |      12     24
irf   xxxxx |      -3     -29     -52     -40     -9 |       7     18
jpl   uuuuu |     -33     -34     -31      65      3 |      39     44
mit   uuuuu |     -18     -27    -230    -197     -6 |      14     24
ngs   uuuuu |     -73       5      42     130      4 |      19     26
sio   uuuuu |      28      97     131     -79    -10 |      41     44

Table 7.1546.3   GPS week: 1546   Day: 3   MJD: 55069.500

                                                         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     -31     -80      58      1 |      -1     20
emr   uuuuu |      53     -27     334      26      8 |      26     34
esa   uuuuu |     -10     -46    -119      10      5 |      35     40
gfz   uuuuu |      48      17       0     121    -14 |      23     29
grg   xxxxx |       8     -50     -68      77      8 |       1     24
igr   xxxxx |       9     -37      16      93      5 |      10     23
irf   xxxxx |       1     -19     -35      33     -2 |       5     19
jpl   uuuuu |       6     -30     123      94     13 |      38     43
mit   uuuuu |     -19       2    -205    -147      1 |      12     23
ngs   uuuuu |     -53     -11      81      33     -3 |      19     26
sio   uuuuu |      28     128     156     -63      5 |      39     43

Table 7.1546.4   GPS week: 1546   Day: 4   MJD: 55070.500

                                                         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 |     -53      21     -16      47     10 |      -3     20
emr   uuuuu |      58     -13     347      50     14 |      26     34
esa   uuuuu |      -8     -27     -40     -11      4 |      35     40
gfz   uuuuu |      48      40     -54      91     -5 |      19     28
grg   xxxxx |     -53     -41     -67      -5    -25 |       4     21
igr   xxxxx |     -14     -35      30      62      2 |       9     23
irf   xxxxx |     -12     -14     -66       5      3 |       3     19
jpl   uuuuu |     -24     -34      13     -22    -23 |      39     44
mit   uuuuu |     -49      -2    -194    -104      8 |      12     23
ngs   uuuuu |       2     -49      75      52    -12 |      18     26
sio   uuuuu |      26     130     178      19     11 |      37     42

Table 7.1546.5   GPS week: 1546   Day: 5   MJD: 55071.500

                                                         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 |       0     -17    -169     -58      5 |       0     21
emr   uuuuu |      21     -25     304    -100     24 |      31     38
esa   uuuuu |     -17     -19     122     114    -14 |      38     43
gfz   uuuuu |      42      43     -84      53     -4 |      22     29
grg   xxxxx |     -32     -50    -231      57    -29 |       5     20
igr   xxxxx |       3     -43     -79     -51      8 |      12     24
irf   xxxxx |       2     -30     -66     -10      1 |       6     19
jpl   uuuuu |     -47      22     -19    -127     27 |      41     45
mit   uuuuu |      -6     -27    -284     -64      4 |      17     25
ngs   uuuuu |     -32     -49      23     -12    -22 |      22     27
sio   uuuuu |      45      99      90      -9     13 |      41     45

Table 7.1546.6   GPS week: 1546   Day: 6   MJD: 55072.500

                                                         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 |      23      -9    -221     -43      7 |       2     22
emr   uuuuu |      38       2     250     -71     29 |      35     43
esa   uuuuu |     -26     -37     -37      -5    -27 |      41     44
gfz   uuuuu |      53      41    -162     -25     -9 |      23     31
grg   xxxxx |     -37     -71    -210    -192      8 |       4     20
igr   xxxxx |      -2     -31     -87     -75      4 |      15     27
irf   xxxxx |       3     -21     -52      25      2 |       8     21
jpl   uuuuu |     -19      20       1    -204     29 |      45     50
mit   uuuuu |     -16     -24     -80      79      5 |      20     28
ngs   uuuuu |     -37     -32      68       7    -13 |      22     27
sio   uuuuu |      42     117     246     161     15 |      44     49



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