[IGSREPORT-19941] Wk 1642 IGS Final Orbits

Jim Ray igs.acc at noaa.gov
Thu Jul 14 05:06:43 PDT 2011


Author:  AC Coordinator / NOAA NGS

sum-file Version 2.0
Final IGS Orbit Combination - Week 1642   (Jun 26, 2011 - Jul 02, 2011)

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 (as part of the separate SINEX combination since GPS
week 1051; weighted according to the orbit combination before that time). 

  Starting with GPS wk 0894, IGS LOD combinations were implemented in the 
Final IGS solutions.  AC LOD biases with respect to Bulletin A are estimated
using Bulletin A most recent 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:

igs1642[0-6].sp3  IGS GPS ephemeris files in SP3 format.
igs1642[0-6].clk  IGS GPS satellite and station clocks in clock RINEX format.
igs1642[0-6].cls  IGS GPS clock combination summary report.
igs16427.erp      Earth Rotation Parameters (ERP) and their rates as well as
                  Universal Time (UT1-UTC) and Length Of Day (LOD) associated 
                  with IGS ephemerides.
igs16427.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 of poorer consistency (GRG),
    they 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 1582, a new solution from CNES/GRGS (GRG) is included with
    weight except for the clock and LOD combinations.

 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  |  EMR   | 30
                0  |  ESA   | DAV1 UNSA
                0  |  GFZ   | 12 DAEJ MDVJ SUWN
                0  |  GRG   | USN3
                0  |  JPL   | 25
                0  |  MIT   | 30 30 DAV1
                1  |  COD   | AREQ WROC AREQ WROC
                1  |  EMR   | 30
                1  |  ESA   | 30 UNSA
                1  |  GFZ   | 12 30 MDVJ THU3
                1  |  GRG   | USN3
                1  |  JPL   | 25 AREQ
                1  |  MIT   | 30 30 NNOR NNOR
                2  |  COD   | WROC WILL WROC
                2  |  EMR   | 26 26 30 KHAJ KHAJ
                2  |  ESA   | YELL UNSA YELL
                2  |  GFZ   | 30 MDVJ YELL
                2  |  GRG   | GUAT USN3
                2  |  JPL   | 25 26 AREQ KELY
                2  |  MIT   | 30
                3  |  COD   | BRAZ
                3  |  EMR   | 26 26 30
                3  |  ESA   | 32 IRKJ UNSA
                3  |  GFZ   | 26 31 IRKT KELY MDVJ
                3  |  GRG   | IRKJ USN3
                3  |  JPL   | 25 32
                3  |  MIT   | 26 30 32 26 30 32 BRUS BRUS
                4  |  EMR   | 26 26
                4  |  ESA   | IRKJ REUN UNSA
                4  |  GFZ   | 3 7 26 30 DAV1 MDVJ REUN
                4  |  GRG   | IRKJ USN3
                4  |  JPL   | 25 REUN
                4  |  MIT   | 26 30 26 30 MDVJ
                5  |  COD   | NTUS
                5  |  EMR   | 26 30 SYOG SYOG
                5  |  ESA   | MAW1 IRKJ MAW1 UNSA
                5  |  GFZ   | 15 21 31 FAIR KOSG
                5  |  GRG   | IRKJ SANT USN3
                5  |  JPL   | 15 21 25 COCO
                5  |  MIT   | 26 26 30 CAS1 MAC1 CAS1 MAC1
                6  |  ESA   | IRKJ UNSA
                6  |  GFZ   | 15 23 MDVJ WES2
                6  |  GRG   | IRKJ USN3
                6  |  JPL   | 25
                6  |  MIT   | 10 26 30 10 26 30 MDVJ MAW1 MDVJ

 5. 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 G01 |    |    |    |    |    |  1 |    |

 6. Starting 5-Nov-2006 (GPS Week 1400, day 0, MJD 54044) until 16-Apr-2011
    (GPS Week 1631, day 6, MJD 55667) all IGS products, including the IGS
    combined orbits, are based on the IGS realization of the ITRF2005 reference
    frame (IGS05).   For more information see IGSMAIL #5447.  The IGS05 frame
    is also the basis for the homogeneously reprocessed IGS products from GPS
    Weeks 730 to 1459 (1994-2007); see IGSMAIL #6136.
    Starting 17-Apr-2011 (GPS Week 1632, day 0, MJD 55668) all IGS products,
    are based on the IGS realization of the ITRF2008 reference frame (IGS08).
    For more information see IGSMAIL #6354.
    

 7. Small rotations were applied to all the AC orbit and ERP values in order
    to align them to the IGS05 frame. These rotations were estimated in the IGS
    SINEX combination process, performed by the IGS Reference Frame Coordinator
    at the Institut Geographique National (IGN), and are based on the common
    stations between the individual AC SINEX solutions and the IGS05.snx SINEX
    frame. 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  |    -.3     .2     .4     -22      5     -9     .01
       EMR  |    5.0    6.3    2.2       1     18     -3     .25
       ESA  |    3.8   -3.0    5.4     -18   -145     59     .07
       GFZ  |   -2.4     .3    -.6      -4     36      6    -.04
       GRG  |    4.8   -2.0   18.3     -10     15    -22    -.08
       JPL  |    4.6    -.9    5.5      21     11     93   -1.23
       MIT  |    6.8   -5.4   14.3      -9      8    -20     .09
       NGS  |    6.6   -4.0   14.7     -45     -4      7    -.02
       SIO  |    1.6   -4.3  -10.2     -75   -110      4     .03


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

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

10. Starting 5-Nov-2006 (GPS Week 1400, day 0, MJD 54044) until 16-Apr-2011
    (GPS Week 1631, day 6, MJD 55667) the absolute antenna model is introduced
    (IGSMAIL #5438). The antenna phase center offsets and phase center
    variations are given in the file:
        ftp://igs.org/igscb/station/general/igs05.atx
    These antenna calibrations are also used in the homogeneously reprocessed
    IGS products from GPS Weeks 730 to 1459 (1994-2007); see IGSMAIL #6136.
    Starting 17-Apr-2011 (GPS Week 1632, day 0, MJD 55668) the absolute antenna
    model is updated (IGSMAIL #6255 & #6374) as given in the file:
        ftp://igs.org/igscb/station/general/igs08.atx
    The JPL solution does not yet use IGS08/igs08.atx, which causes their RMS
    clock residuals to be higher than for the other centres; for the same
    reason, the JPL solution is excluded from the weekly SINEX combination.

    
ORBIT COMBINATION AND EVALUATION STATISTICS:                                    
--------------------------------------------                                    
      
Most combination statistics are with respect to the combined orbits and
consist of 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 1.1642.a). It also displays the computed satellite
position sigmas for the combined orbits (table 1.1642.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 2.1642.[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 3.1642.[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 5.1642.0-6).

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 1642 summary.                       (Jun 26, 2011 - Jul 02, 2011)

Table 1.1642.a   GPS week: 1642   MJD: 55738.000-55744.000

         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  254|    0     0    -1     8   -34    -6  -.17    8    8 |    -626    -196     17     99
        |    0     0     1     7    24     9   .02           |     369     897
emr   97|    1     1    -4   -47   -31     7   .38   16   16 |    2342     -71     16    117
        |    1     1     1     7    22    12   .05           |     812     771
esa  137|    0     0     1   -16   172    28   .30    8    8 |     304   -1092     13    130
        |    0     1     2    13    37     6   .04           |    1040    1300
gfz  198|    0     0    -2   -27  -112    -1  -.13   11   11 |     -24     311     24    147
        |    1     0     1    14    41     6   .04           |     462     822
grg  133|    3     0     9   -40   -39    -7   .38   20   17 |      24     -68     51    244
        |    1     1     2    18    37    32   .28           |     364     573
igr  n/a|    0     0     0     4    -6   -29  -.04    5    5 |   18383    -970     21    113
        |    0     0     0    13    24     9   .03           |    1460     891
jpl  126|   -2     1    -3  -103   -24    10   .52   18   17 |    1226      44     19    352
        |    1     1     1    11    31    29   .04           |    1012     783
mit  269|    1     0     0   -10   -51   -22  -.31   10    8 |     -79    -345     20    176
        |    0     0     0    18    38     5   .04           |     775     950
ngs  227|    0     0     3    61   -10    -9  -.17    9    8 |  -27513   36636   2076   3971
        |    1     0     0    11    33     9   .05           |   71108   97942
sio  254|   -2     2     0   155   186     6  -.14   19   18 |     ---     ---    ---    ---
        |    1     0     1    17    28     8   .03           |     ---     ---


Table 1.1642.b   GPS week : 1642   MJD: 55738.000-55744.000   

         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  |    0    0    0    0    0    0    0 |
   2  |    4    3    3    4    4    4    4 |
   3  |    3    4    3    3    3    4    4 |
   4  |    4    4    4    4    4    4    4 |
   5  |    5    4    4    4    5    6    4 |
   6  |    3    3    4    4    3    4    3 |
   7  |    4    5    5    5    6    6    5 |
   8  |    3    3    3    3    4    4    4 |
   9  |    4    4    4    4    4    4    8 |
  10  |    3    3    4    3    4    4    3 |
  11  |    3    3    3    3    4    3    3 |
  12  |    4    5    4    5    5    5    5 |
  13  |    5    4    4    4    4    4    4 |
  14  |    5    4    4    7    4    4    4 |
  15  |    4    4    4    4    5    4    5 |
  16  |    5    5    5    5    5    5    5 |
  17  |    4    4    4    4    4    5    4 |
  18  |    4    4    4    4    4    4    4 |
  19  |    5    5    4    4    5    5    5 |
  20  |    4    4    4    4    4    4    4 |
  21  |    4    4    3    3    3    4    3 |
  22  |    4    4    4    4    4    4    4 |
  23  |    4    5    5    5    5    5    5 |
  24  |    4    4    4    4    4    4    4 |
  25  |    4    5    4    5    5    5    5 |
  26  |    5    6    6    5    5    5    5 |
  27  |    4    3    3    3    8    4    3 |
  28  |    4    4    4    4    4    4    4 |
  29  |    5    4    4    5    4    5    4 |
  30  |    7    6    5    8   12    7    9 |
  31  |    4    4    5    5    5    6    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 2.1642.0   GPS week: 1642   Day: 0   MJD: 55738.000                            

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  254|    0    -1    -3     5   -61    -1  -.18    7    7 |    -640    -356     14     89
        |                     13    16                       |
emr   97|    1     4    -4   -44   -61     0   .39   17   17 |    1888     561     13    111
        |                     -4   -37                       |
esa  137|    0     0     4   -10   194    40   .26    7    7 |     -67     -60     12    118
        |                     31    51                       |
gfz  198|   -1     0     0   -13   -45     0  -.16   10   10 |      19      10     25    157
        |                     19    99                       |
grg  133|    2     1     7   -73   -93   -10   .63   15   13 |     -65     191     43    300
        |                    108    97                       |
igr  n/a|    0     0     1   -13   -36   -36  -.04    5    5 |   20178      53     20    112
        |                     27    28                       |
jpl  126|   -4     0    -2   -97   -64     0   .49   19   18 |     464     551     20    348
        |                     88  -144                       |
mit  282|    0     0     0    10   -20   -18  -.32    9    8 |     459    -807     19    203
        |                    -18    -9                       |
ngs  227|    0     0     3    39   -61   -12  -.15    9    7 |    -656    -354   2073   4341
        |                     27   -17                       |
sio  254|   -4     2    -2   156   195     1  -.13   18   18 |     ---     ---    ---    ---
        |                   -105  -137                       |

Table 2.1642.1   GPS week: 1642   Day: 1   MJD: 55739.000                            

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  254|    0     0    -2    15   -25    -6  -.18    8    7 |   -1295    1203     16    102
        |                     13    12                       |
emr   97|    1     0    -4   -50   -14    18   .34   16   16 |    1687     275     14    117
        |                      7   -49                       |
esa  137|    1    -2    -1     7   174    34   .25    8    8 |    -409    1005     18    134
        |                      3    16                       |
gfz  198|   -1     0     0   -35  -155    -3  -.15   10   10 |    -832    1215     23    126
        |                     10    96                       |
grg  133|    1     2    11   -19   -30    -4   .60   14   13 |    -411     602     38    226
        |                     50   -29                       |
igr  n/a|    1     0     0    27    18   -27  -.09    5    5 |   19609    -373     22    121
        |                    -22   -10                       |
jpl  126|   -3     2    -1   -89   -32   -10   .52   19   17 |     335     194     20    348
        |                    -16     0                       |
mit  282|    0     0     1   -43   -66   -13  -.34    9    9 |   -1067    1672     18    149
        |                     13    21                       |
ngs  227|    0    -1     2    58    11   -14  -.22    9    7 |   -1189    1029   1813   4017
        |                    -72   -70                       |
sio  254|   -3     3     0   124   168     6  -.14   17   15 |     ---     ---    ---    ---
        |                    -94  -127                       |

Table 2.1642.2   GPS week: 1642   Day: 2   MJD: 55740.000                            

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  254|    0     0    -1    11   -39     4  -.19    8    8 |     -76    -547     20    112
        |                     58    33                       |
emr   97|    0     3    -6   -42   -42     1   .33   16   16 |    2765    -911     15    107
        |                     18   -27                       |
esa  137|    0     0     0   -31   116    28   .29    8    8 |     135   -1471     14    137
        |                     29    63                       |
gfz  198|    0    -1    -1   -40  -133     9  -.16   11   11 |     471     752     24    148
        |                     -4   123                       |
grg  133|    3    -2    10   -54   -29     8   .60   14   13 |     360    -462     38    241
        |                     86   -18                       |
igr  n/a|    1     0     0     1   -16   -19  -.07    5    5 |   19655   -1628     20    110
        |                      0    46                       |
jpl  126|   -1     1    -5  -105   -24    16   .46   18   16 |    1087    -482     18    334
        |                     92   101                       |
mit  282|    0    -1     0     4    -5   -26  -.35    7    7 |     960   -1030     18    149
        |                     -6   -10                       |
ngs  227|    1     0     3    68    -3   -24  -.16    9    8 |     -89    -556   2025   3939
        |                     21   -22                       |
sio  254|   -3     1    -1   181   208    -1  -.17   19   18 |     ---     ---    ---    ---
        |                   -123  -139                       |

Table 2.1642.3   GPS week: 1642   Day: 3   MJD: 55741.000                            

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  254|    0     0    -1    -2   -51   -21  -.20    9    9 |    -567     -98     18     86
        |                     37    49                       |
emr   97|    1     2    -4   -49   -40     6   .32   17   17 |    1273     869     17    132
        |                     14   -47                       |
esa  137|    2     0     0   -13   215    24   .32    8    8 |     115   -2084     15    143
        |                     46    16                       |
gfz  198|    0     0    -2    -2  -105    -6  -.06   13   14 |    -385    1383     28    158
        |                     47    79                       |
grg  133|    2     0    12   -37   -70   -24   .58   17   14 |      -1    -292     54    234
        |                     86    11                       |
igr  n/a|    0    -1     0     5   -24   -37  -.02    5    5 |   17765     -37     25     98
        |                     10     2                       |
jpl  126|    0     0    -2  -117   -32    19   .50   17   15 |     258    1198     21    343
        |                     43    35                       |
mit  282|    0    -1     0     3   -64   -20  -.34    8    7 |     459   -1056     22    213
        |                    -13    15                       |
ngs  227|   -1    -1     2    54   -29     4  -.27    9    7 |    -597      18   2071   3750
        |                    -31   -36                       |
sio  254|   -2     1    -1   163   169    11  -.19   18   17 |     ---     ---    ---    ---
        |                   -109  -122                       |

Table 2.1642.4   GPS week: 1642   Day: 4   MJD: 55742.000                            

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  254|    0     0     0     5   -10   -15  -.15    8    7 |    -439     729     19    105
        |                     37   -19                       |
emr   97|    1     0    -4   -49     1    28   .40   16   16 |    2858      28     21    123
        |                    -17   -46                       |
esa  137|    0     0     3   -16   131    24   .33    9    9 |    2543   -1267     13    136
        |                     59    35                       |
gfz  198|    0    -1    -3   -35  -151    -2  -.09   10   11 |     -85       6     26    150
        |                     28    53                       |
grg  133|    5     0     9   -27    23   -52   .16   24   21 |    -460     729     57    253
        |                     50   -83                       |
igr  n/a|    0     0     0    11    14   -34  -.04    6    6 |   18178   -1301     21    116
        |                     -3    26                       |
jpl  126|   -3     0    -4  -111    34    71   .56   19   18 |    1804      30     19    355
        |                     60   -57                       |
mit  282|    0    -1     0   -19   -92   -30  -.30   11    8 |      76     -76     24    171
        |                     -7    23                       |
ngs  227|    1     0     3    71    40    -2  -.11    9   10 | -188771  258742   2179   3833
        |                    -40   -75                       |
sio  254|   -1     2    -1   164   171     2  -.10   19   16 |     ---     ---    ---    ---
        |                   -113  -131                       |

Table 2.1642.5   GPS week: 1642   Day: 5   MJD: 55743.000                            

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  254|   -1     0     0    19   -56     3  -.16    8    7 |    -572   -1286     16    115
        |                     21    42                       |
emr   97|    0     1    -2   -61   -47     7   .43   16   16 |    2269     -46     18    116
        |                     19   -27                       |
esa  137|    0    -2     0   -27   206    27   .29    9    9 |    -571    -822     13    123
        |                     -5    37                       |
gfz  198|   -1     1    -2   -36  -128     2  -.14   11   11 |     242    -387     23    152
        |                      1    94                       |
grg  133|    4     1     4   -38   -56   -18  -.02   27   25 |     314    -617     59    251
        |                     44   -24                       |
igr  n/a|    0     0     1     5   -23   -35  -.00    5    5 |   16547   -1152     21    114
        |                      7    26                       |
jpl  126|   -1     2    -2   -87   -43    -4   .56   17   16 |    1580     114     18    374
        |                     17   -29                       |
mit  282|    2    -1     0   -13   -13   -26  -.24   12   10 |    -467    -568     18    158
        |                      8     6                       |
ngs  227|    0     0     4    70   -30   -10  -.15    8    7 |    -505   -1366   2083   4007
        |                     -7   -32                       |
sio  254|    0     1     1   152   236    22  -.11   21   20 |     ---     ---    ---    ---
        |                    -86  -137                       |

Table 2.1642.6   GPS week: 1642   Day: 6   MJD: 55744.000                            

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  254|    0     0     0     7     4    -7  -.16    8    8 |    -797   -1020     19     90
        |                     27   -57                       |
emr   97|    2     1    -1   -37   -14    -7   .42   17   17 |    3658   -1278     20    117
        |                     -8   -23                       |
esa  137|    0    -1     3   -24   169    22   .36    9    8 |     385   -2951     12    119
        |                     50    32                       |
gfz  198|    1     0    -3   -25   -70    -8  -.13    9    8 |     400    -797     24    142
        |                     -3    41                       |
grg  133|    2     0     7   -29   -22    51   .13   26   22 |     435    -629     68    205
        |                     31    -1                       |
igr  n/a|    0     0     1    -6    22   -13  -.03    5    5 |   16751   -2355     21    122
        |                     17    23                       |
jpl  126|   -3     0    -4  -113    -6   -14   .57   18   16 |    3058   -1293     21    362
        |                     41    64                       |
mit  282|    1    -1     0   -12   -99   -20  -.27   12    9 |    -974    -552     23    190
        |                     -9    23                       |
ngs  227|    0     0     2    69     1    -8  -.13    8    6 |    -788   -1058   2290   3911
        |                    -19   -19                       |
sio  254|    0     1     0   149   153    -1  -.14   22   19 |     ---     ---    ---    ---
        |                    -91  -134                       |

       
       
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 3.1642.0   GPS week: 1642   Day: 0   MJD: 55738.000                            

        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
------+--------------------------------------------------------+---------------------------------------------------------
  X1E |    5  ---  ---  ---  ---   42  ---  ---  ---  ---    0 |    68  ---  ---  ---  ---   72  ---  ---  ---  ---    68
   2  |    5   11    8    8   11    4   20   10    9   19    3 |    28   30   31   29   34   29   35   34   34   25    29
   3  |    7   12    5    8   12    6   12    6    9   15    3 |    26   32   27   24   30   27   37   23   25   32    25
   4  |    7   10    7    9   11    5   16    5    9   24    3 |    55   55   63   66   60   60   60   64   54   57    59
   5  |    6   24    8    8   17    7   25   12   10   17    4 |    18   30   19   17   26   17   36   21   21   24    18
   6  |    6   10    5    9   11    5   10    6    7   13    2 |    15   25   16   16   22   16   30   13   20   19    16
   7  |    5   17    7    8   19    5   22    9    6   29    4 |    37   38   35   36   37   35   44   40   40   43    35
   8  |    5   12    7    9   12    5   12   10    7    8    3 |    21   19   20   19   18   20   31   23   23   21    19
   9  |    6   11    8    8   14    4   16    8    9   21    3 |    12   21   19   14   21   12   24   12   15   20    13
  10  |    6   14    5    8   14    7   13    7    6   20    3 |    15   19   12   19   19   14   23   20   19   18    14
  11  |    7   12    4    7   10    4   15    6    9   15    3 |    35   45   40   36   50   38   45   37   39   33    38
  12E |   10   16    9   11   18    4   25    8   10   12    4 |    18   29   19   21   27   17   34   19   17   20    18
  13  |    7   23    8    6   24    5   22   14   10   13    4 |    34   41   32   29   40   32   40   33   35   31    31
  14E |   14   15    7   13   16    5   20   13    7   15    4 |    29   29   21   20   28   21   31   22   25   23    21
  15E |    6   18    5   11   17    6   20    6    9   11    3 |    28   38   29   29   37   26   39   29   34   33    29
  16E |    8   23    8   12   17    6   19   13   10   17    4 |    18   29   20   19   26   17   28   18   17   26    17
  17  |    7   22    8    7   19    5   19    6    7   13    4 |    19   30   15   15   23   14   31   20   18   20    15
  18  |    7   19    6    8   15    3   20    6   10   19    3 |    28   36   26   26   24   25   35   27   27   25    25
  19  |    9   17    6    9   14    4   21   14   12   28    4 |    19   35   21   19   29   20   38   23   16   27    19
  20  |    8   20    8    7   14    3   18    6    6   11    3 |    19   26   14   15   25   15   26   16   18   20    15
  21  |    6   10    7    7    9    4   10    9    9   24    3 |    30   30   32   36   32   31   28   34   30   27    30
  22  |    5   19    8    9   14    4   18    9    7   11    3 |    18   27   17   19   19   17   26   18   19   21    16
  23E |    7   23    8   11   12    7   26    8    6   12    4 |    14   32   21   19   28   15   36   18   19   23    18
  24  |    6   13    6   17   15    4   14    5    7   27    4 |    23   26   27   33   32   26   28   25   27   37    26
  25E |    6   20    9   12   13    4   20   11   10   12    4 |    27   35   31   32   33   28   39   33   28   30    28
  26  |   13   18    7   11   24    9   14   12   13   22    5 |   122  132  124  125  133  123  135  128  130  134   127
  27  |    6   12    6   11   16    5   15    6    9   20    3 |    15   21   17   17   20   13   26   14   17   21    14
  28E |    6   12    8   10   14    6   19    8   10    9    3 |    20   27   23   19   26   20   31   25   25   26    21
  29  |    8   23    7    9   15    6   25    7   13   17    4 |    21   34   25   21   30   21   35   19   22   22    21
 X30E |    9   18   12   21  ---    6  ---   13  ---  ---    7 |    57   59   56   58  ---   54  ---   56  ---  ---    56
  31  |    5   17    9   11   16    3   18    6   10   21    4 |    10   26   17   19   27   11   26   12   12   16    11
  32  |   11   15    7    8   10    4   20    8    7   12    3 |    23   24   23   20   19   20   32   23   24   25    21
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |    7   17    7   10   15    5   19    9    9   18      |T   28   34   28   28   32   28   36   29   28   29    28
 WRMS |    7   17    7   10   13    5   18    8    7   18      |NE  22   30   24   24   29   22   32   23   23   25    22
 MEDI |    6   17    7    9   14    5   19    8    9   15      |MD  21   30   23   20   27   20   32   23   23   25    21

Table 3.1642.1   GPS week: 1642   Day: 1   MJD: 55739.000                            

        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
------+--------------------------------------------------------+---------------------------------------------------------
  X1E |    3  ---  ---  ---  ---   51  ---  ---  ---  ---    0 |    80  ---  ---  ---  ---   69  ---  ---  ---  ---    78
   2  |    6    9    4    8    8    5   16    8    9   18    3 |    15   16   19   20   17   19   18   21   22   18    17
   3  |    9   14    6    9   10    5   15    8   12   14    3 |    25   29   27   23   27   25   26   22   27   30    25
   4  |    9    9    8   11   12    4   10    7   10   21    3 |    58   59   59   63   60   60   61   64   62   63    60
   5  |    8   19    8    9   16    5   24   10   10   15    4 |    20   27   21   21   26   20   30   22   26   24    20
   6  |    8   11    6   11    6    5   10    9   10   11    3 |    15   18   16   15   19   17   17   12   17   15    15
   7  |    6   19    9   12   18    4   22    9    8   29    4 |    33   39   36   36   39   34   42   36   35   42    34
   8  |    6   11    6    9    9    6   11    7    5    6    2 |    18   20   20   18   18   18   23   20   21   22    18
   9  |    5   11    8    9   13    4   12    9   11   22    3 |    14   19   20   16   20   15   21   15   19   18    15
  10  |    6    9    5   10   13    4   10    7    8   18    3 |    18   19   17   20   16   17   19   20   22   17    17
  11  |    7   12    5   10    8    3   15    4    6   15    3 |    27   36   29   29   38   27   38   26   27   23    29
  12E |    8   15   12   12   25    4   26    8    7   12    4 |    18   24   21   21   27   18   24   18   18   20    18
  13  |   10   19    6    9   14    6   21   14    9   11    4 |    27   37   33   29   38   29   33   33   28   33    31
  14E |    6   11    5   12   15    7   21    7   11   14    3 |    22   24   23   20   23   22   26   20   24   24    22
  15E |    5   19    7   12   21    5   23    7    8   12    4 |    31   36   33   32   41   30   35   30   31   30    31
  16E |    9   21    8   15   17    6   26   14   14   19    5 |    20   27   23   22   22   19   28   18   21   23    19
  17  |    7   17    8   11   15    6   19    9   10   14    4 |    14   23   16   18   21   13   25   15   15   16    13
  18  |    9   21    8    9   14    5   21    7   10   16    4 |    24   32   22   21   25   22   32   21   21   23    22
  19  |    9   19    7    8   13    7   22   12   13   22    4 |    14   28   22   13   26   15   28   16   15   16    15
  20  |    6   20    9    8   12    7   20    9    6   11    3 |    14   26   21   17   22   15   27   15   16   16    15
  21  |    5   12   14    7    9    5   13   13    9   23    4 |    18   20   20   22   19   19   21   23   22   17    18
  22  |    7   18    8    9   13    5   18    8   10   13    3 |    19   25   16   16   20   16   25   19   15   22    16
  23E |    6   22    9   14   16    6   28   11    7   17    4 |    20   34   26   24   30   22   36   23   25   29    23
  24  |    5   13    5   17   11    5   13    6    4   27    4 |    21   23   22   29   21   21   25   21   18   33    22
  25E |    8   21    8    9   16    5   27   11   10   11    4 |    25   34   28   26   29   26   40   25   27   23    25
  26E |   24   19    9   11   18    9   17   12   10   22    5 |    94  100   98   96  102   94   98   92   92   87    95
  27  |    6   11    7    8   13    6   14    7    8   17    3 |    22   23   22   23   21   22   23   25   25   26    21
  28E |    8   17    8   10   12    5   16   10   10   12    4 |    23   29   23   24   25   24   26   23   27   20    23
  29  |    7   20    9    8   13    6   24    7    9   16    4 |    18   31   25   19   29   19   31   14   20   15    20
 X30E |    9   21    9   15   17   11  ---   13  ---  ---    6 |    43   47   41   46   42   42  ---   41  ---  ---    41
  31  |    6   13    5   11   18    5   17    5    9   22    4 |    13   21   16   15   27   12   24   13   11   19    12
  32  |   11   15    7    9   10    5   18    9    5    9    3 |    20   26   25   21   19   18   29   18   20   20    20
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |    8   16    8   10   14    5   19    9    9   17      |T   26   30   27   26   29   26   31   25   25   26    26
 WRMS |    7   16    8   10   13    5   17    9    7   15      |NE  20   26   23   22   25   20   27   21   22   23    20
 MEDI |    7   17    8   10   13    5   18    9    9   15      |MD  20   27   22   21   25   20   26   21   22   22    20

Table 3.1642.2   GPS week: 1642   Day: 2   MJD: 55740.000                            

        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
------+--------------------------------------------------------+---------------------------------------------------------
  X1E |    4  ---  ---  ---  ---  187  ---  ---  ---  ---    0 |    60  ---  ---  ---  ---  181  ---  ---  ---  ---    60
   2  |    6    9   10    9    8    5   13    6    8   21    3 |    20   17   24   23   23   21   19   22   25   20    21
   3  |    7   13    7   10   11    4    8    7    8   16    3 |    19   22   19   17   23   18   21   17   21   23    17
   4  |   13   13    6    9   18    8   11    6    9   22    4 |    75   76   75   73   70   77   74   75   74   73    74
   5  |    7   18    7   10   18    5   24    7    7   20    4 |    17   24   17   14   26   14   30   17   16   23    15
   6  |   11   14    9   10   10    4    9    6    7   13    3 |    16   20   14   15   17   12   19   11   16   16    12
   7  |    7   17    9   10   16    4   19    6    9   30    4 |    18   29   24   21   30   19   29   18   20   30    19
   8  |    7   10   10   10    9    5    9    6    8    8    3 |    13   15   13   14   15   10   15   13   13   14    10
   9  |   11   13    7    7   11    5   12    5   10   20    3 |    19   22   14   14   15   12   22   15   17   17    14
  10  |    6   10    8   12   15    5   11    6    8   21    3 |    17   20   14   20   20   15   11   19   19   15    15
  11  |   11   11    5    6    9    3   12    7    8   15    3 |    34   39   35   33   44   33   41   33   37   29    34
  12E |    7   16    8   10   16    4   22    6    7   13    3 |    13   24   16   15   25   13   24   14   16   15    13
  13E |    5   22    6   11   15    3   18    8    9   10    4 |    19   32   22   20   27   18   25   19   21   20    19
  14E |    9   11    8   12   12    6   19    7   11   14    3 |    15   20   16   17   21   12   24   15   18   15    14
  15E |    5   16    8   12   13    6   23    5    7   11    3 |    13   23   17   15   22   13   24   12   17   18    13
  16E |    8   21    7   14   15    6   20    9   10   23    4 |    19   26   22   20   25   19   25   24   25   35    20
  17  |    8   16   12    9   15    5   17    8    9   14    4 |    14   21   13   12   20   12   24   16   17   14    11
  18  |    6   20    9   10   15    5   20    5    9   15    4 |    19   28   16   14   25   15   28   15   17   17    15
  19  |    6   19    7   11   15    4   24   10    8   21    4 |    14   27   16   13   27   13   33   15   13   14    13
  20  |    7   15    7    9   14    2   19    6    9   14    3 |    18   24   15   16   24   14   26   15   18   15    15
  21  |    4    9    7    7   11    3   11    7   10   23    3 |    22   23   24   24   26   23   23   24   21   21    22
  22  |    6   16    9   10   14    5   18    6    9   13    3 |    15   22   13   14   19   12   21   14   14   17    12
  23E |    7   21    8   14   14    5   27    8    8   15    4 |    12   26   18   19   24   13   25   17   18   20    15
  24  |   10   11    5   15   12    2   10    6    7   27    3 |    27   22   27   30   27   25   23   24   28   35    25
  25E |    6   19   10   11   17    4   25    7    8   13    4 |    17   26   25   16   26   17   35   17   15   20    17
  26E |   15   25    7   12   18    8   17   13   10   35    5 |    96  105  100  102  103   97  104   98  100  102    99
  27  |    7   12    5    9   13    6   11    5    6   14    3 |    27   28   24   23   26   24   26   29   24   32    25
  28E |    9   17    9   12   15    3   16   10    9   16    4 |    23   28   25   23   28   22   29   25   27   28    23
  29  |    7   22    8   10   14    4   25    6    9   17    4 |    19   34   22   18   30   19   34   17   19   18    19
 X30E |    8   19   10   12   17   11  ---    7  ---  ---    5 |    33   39   35   32   34   32  ---   35  ---  ---    32
  31  |    6   17    8   15   17    4   22    7   12   22    4 |    14   27   18   22   27   15   25   15   20   18    14
  32  |   11   14    6   10   10    4   15    5    8   13    3 |    23   24   21   19   19   18   27   17   20   19    19
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |    8   16    8   11   14    5   18    7    9   19      |T   24   29   24   23   28   26   29   23   24   25    23
 WRMS |    8   16    8   11   13    5   16    7    8   18      |NE  22   28   22   22   27   21   27   22   23   23    21
 MEDI |    7   16    8   10   14    5   17    6    8   15      |MD  19   24   19   19   25   17   25   17   19   19    17

Table 3.1642.3   GPS week: 1642   Day: 3   MJD: 55741.000                            

        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
------+--------------------------------------------------------+---------------------------------------------------------
  X1E |    4  ---  ---  ---  ---   45  ---  ---  ---  ---    0 |    89  ---  ---  ---  ---  129  ---  ---  ---  ---    88
   2  |    6    9    7   15   10    5   12    7   15   22    4 |    28   30   30   31   31   27   30   31   34   25    28
   3  |    7   12    7   13   12    5    8    7    9   18    3 |    19   21   18   18   23   18   24   16   25   24    18
   4  |   14   11   10    9   14    7   11    6    8   22    4 |    40   46   51   51   46   47   42   46   47   46    45
   5  |    7   20    6    9   15    5   21    7   10   19    4 |    26   34   28   24   28   25   33   28   27   29    25
   6  |   10   11    8   11   12    5    9    8    9   14    3 |    20   19   20   19   23   17   22   17   24   20    18
   7  |    8   20    8   15   17    4   18    7    9   35    5 |    41   47   45   41   43   43   47   44   44   52    41
   8  |    9   12    8   10   11    3    9    5    8   12    3 |    25   28   29   28   27   27   29   27   29   32    26
   9  |   12   12    7    5   12    4    9    6   11   17    3 |    21   26   22   21   23   20   23   21   23   24    20
  10  |    6   11    7    9   13    4   10    6    7   20    3 |    22   24   23   22   23   23   21   25   27   24    22
  11  |   11   11    6   10   10    5   13    5    3   13    3 |    38   45   43   43   50   40   47   41   40   35    41
  12E |    7   22    8   14   17    4   23    9    8   13    4 |    30   41   32   33   42   32   38   34   34   33    32
  13E |    7   18   10   12   15    4   20    7    5   11    4 |    23   31   28   24   28   24   28   24   26   26    23
  14E |   13   17    7   18   55    6   20   10   13   12    6 |    19   28   20   24   65   16   28   16   18   21    18
  15E |    6   17    6   16   16    5   21    6    8   10    4 |    27   33   28   27   36   27   32   28   31   29    27
  16E |    8   24    8   13   12    8   20   12   11   19    4 |    36   43   34   36   40   35   41   37   35   42    35
  17  |    7   16   10   10   15    5   16    5    7   16    3 |    19   26   17   18   24   17   25   19   23   19    17
  18  |    6   18    9   11   13    5   18    6   10   15    3 |    26   36   27   29   32   27   35   28   26   29    26
  19  |    6   19    7   12   14    4   20   12    8   20    4 |    19   29   23   20   30   19   32   22   24   20    21
  20  |    8   17    8   15   14    3   17    7    5   14    3 |    22   32   23   26   25   21   29   24   22   22    22
  21  |    6    9    5    9   13    5    9    6    7   23    3 |    30   33   31   32   37   30   32   33   32   29    31
  22  |    7   18    8   11   15    5   17    6    7   11    3 |    21   29   22   26   26   21   29   23   22   27    21
  23E |    9   21   10   13   14    5   27    9    7   16    4 |    22   33   29   27   28   23   31   25   26   27    24
  24  |   10   11    7   20   13    6    9    5    9   27    4 |    31   33   34   42   34   34   34   34   28   41    32
  25E |    8   25   11   12   18    4   21   10    8   12    4 |    32   46   40   34   40   36   46   36   39   34    36
  26E |   13   22    9    9   22    6   17   15   11   20    5 |    65   75   65   64   74   66   73   69   71   70    67
  27  |   11   10    7    7   14    4    9    6    9   13    3 |    30   31   37   31   32   30   30   27   31   27    29
  28E |   10   14    7   10   13    4   19    9    8   11    3 |    26   33   32   29   34   27   34   31   33   33    29
  29  |   10   23    9   11   13    5   23    6    7   17    4 |    23   39   29   27   32   23   34   22   23   23    24
 X30E |   12   21   15   15   34   14  ---   11  ---  ---    7 |    47   53   41   52   44   49  ---   47  ---  ---    45
  31  |    7   15    8   27   17    5   19    7   11   21    5 |    20   28   24   29   30   19   29   21   16   23    19
  32  |   11   14    8   13    9    5   14    5    6   12    3 |    25   29   26   26   18   25   31   23   27   25    24
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |    9   17    8   13   17    5   17    8    9   18      |T   30   34   30   30   34   31   33   29   30   30    30
 WRMS |    9   17    8   14   14    5   15    7    7   17      |NE  24   30   27   28   30   25   30   26   27   26    25
 MEDI |    8   17    8   12   14    5   17    7    8   16      |MD  26   33   29   28   32   27   31   27   27   27    26

Table 3.1642.4   GPS week: 1642   Day: 4   MJD: 55742.000                            

        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
------+--------------------------------------------------------+---------------------------------------------------------
  X1E |    2  ---  ---  ---  ---   48  ---  ---  ---  ---    0 |    99  ---  ---  ---  ---  140  ---  ---  ---  ---    97
   2  |    5   11    7    6   15    4   14    9    8   24    3 |    23   23   26   24   25   24   24   26   25   21    22
   3  |    6   10    4    9   20    5   11    8    9   15    3 |    14   19   19   14   19   15   24   12   16   22    14
   4  |    7    9    8    8   17    6   14    4   10   28    3 |    33   33   39   38   34   36   40   35   36   38    35
   5  |    7   22   11    8   21    5   23    8   12   16    4 |    24   36   19   26   22   25   38   29   30   26    25
   6  |    8    9    6   10   19    5   10    8    7   12    3 |    16   17   19   16   21   15   22   11   18   17    14
   7  |    9   18    9   19   38    6   22   10    6   35    5 |    34   42   34   43   45   31   42   38   34   48    34
   8  |    7   14    7   12   29    5   13    8    7   16    3 |    22   30   21   29   30   22   32   27   25   31    23
   9  |    7   11   10    7   25    4   14    6   11   17    3 |    24   27   24   23   34   21   31   25   24   29    23
  10  |    6   12    7    9   20    5   11    6    7   20    3 |    21   26   18   24   25   19   27   23   26   19    20
  11  |    8   13    7    9   15    5   16    7    6   16    3 |    34   44   38   33   45   33   42   33   31   29    34
  12E |    7   19   10   16   24    6   25   12    6   15    4 |    24   34   29   30   35   25   35   22   26   25    25
  13E |    7   18   10    8   26    5   22    8    8   11    4 |    20   28   20   21   26   17   27   19   23   21    18
  14E |    6   13    9    8   25    6   19    9   10   14    4 |    18   26   22   16   23   19   27   18   19   19    18
  15E |    5   20   10   13   32    3   23    4    9   11    4 |    19   30   25   23   28   18   25   20   19   23    19
  16E |    8   23    7   12   21    8   21   12    8   16    4 |    19   33   23   19   24   23   31   22   20   26    20
  17  |    6   17   12   10   21    5   20    6   10   16    4 |    15   25   14   19   21   14   29   13   19   19    14
  18  |    6   21   11    8   20    5   21    5    9   15    4 |    22   34   25   20   18   22   36   20   25   21    22
  19  |    8   18    7   10   23    4   22   16    7   21    4 |    15   29   23   19   25   18   31   26   16   18    18
  20  |    6   16   11   10   20    4   17    6    8   12    3 |    17   24   20   19   19   18   28   16   17   19    17
  21  |    4    8    7    6   15    6   12    6   10   22    3 |    20   22   25   18   25   23   22   22   22   22    21
  22  |    6   19   10    8   19    6   19    6    9   12    3 |    19   28   20   16   14   18   29   19   19   19    18
  23E |    7   19   11   11   27    7   29    9    8   15    4 |    19   27   23   20   26   17   29   18   22   21    19
  24  |    7   13    8   14   16    5   13    6    6   27    4 |    26   29   28   29   29   25   28   23   26   38    26
  25E |    9   17    8   12   25    4   24   10   11   13    4 |    24   33   34   29   32   26   40   28   27   25    26
  26E |   10   16   10   11   23    7   18   13   10   22    4 |    67   72   69   71   73   67   73   68   70   69    68
  27  |   14   15   10   11   30   13   15   37   18   35    7 |    67   72   66   72   67   65   75   92   67   92    71
  28E |    7   14    7   11   23    4   16    9    8    9    3 |    27   32   28   32   30   25   34   25   31   27    26
  29  |    7   21   10    7   20    4   26    7    8   18    4 |    19   33   25   23   29   21   36   21   20   21    21
 X30E |   14   26   47   18   41   14  ---   15  ---  ---   12 |    46   52   67   48   55   49  ---   52  ---  ---    49
  31  |    8   15    8    7   39    4   22    6   13   24    4 |    15   25   18   25   41   17   28   13   17   18    15
  32  |   13   18   11    9   19    5   16    5   13    8    4 |    16   25   24   19   17   18   26   18   23   21    18
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |    8   16    9   10   24    6   19   11    9   19      |T   27   32   28   27   30   28   33   26   26   28    27
 WRMS |    7   16    9   11   21    6   18    8   10   16      |NE  23   30   26   25   29   23   33   25   25   27    24
 MEDI |    7   16    9   10   21    5   18    8    8   16      |MD  21   29   24   23   26   22   29   22   23   22    21

Table 3.1642.5   GPS week: 1642   Day: 5   MJD: 55743.000                            

        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
------+--------------------------------------------------------+---------------------------------------------------------
  X1E |    4  ---  ---  ---  ---   85  ---  ---  ---  ---    0 |   127  ---  ---  ---  ---  161  ---  ---  ---  ---   127
   2  |    6   10    9    7   14    4   10    8    8   24    3 |    22   22   23   20   22   20   23   25   23   17    20
   3  |    7   15    8    9   26    4    9    7   10   17    3 |    18   23   19   18   27   17   24   17   19   25    17
   4  |    7    8    7    8   17    4    8    7   11   33    4 |    36   39   36   35   42   34   41   33   34   35    34
   5M |   10   20    9   11   26    7   23   32   10   21    6 |    33   44   31   36   44   33   46   48   35   33    34
   6  |    9   10    6   11   24    4    9    7    9   14    3 |    15   20   16   17   26   14   25   15   18   20    15
   7M |    9   14    9   10   45    5   17   24    7   40    6 |    40   43   45   39   59   40   43   45   39   46    40
   8M |    7   12   11    7   33    4    9    9    7   18    3 |    22   26   24   21   38   22   25   23   19   26    21
   9  |    8   11    7    6   32    5    9   10    7   14    3 |    16   25   20   16   38   16   23   25   18   21    18
  10  |    5   13    7    9   24    5    8    6    8   23    3 |    18   24   19   19   29   18   20   20   20   21    17
  11  |    7   12    4    7   18    4   13   10    5   17    3 |    28   41   30   27   40   30   44   32   31   26    30
  12E |    8   19   10   13   29    5   23   10    7   17    4 |    22   32   23   24   34   21   33   20   27   19    22
  13E |    7   18   10    9   21    4   20   13    8   14    4 |    19   31   24   19   26   18   27   19   20   18    18
  14E |    9   13    7   12   33    4   21    8    7   14    4 |    21   30   24   27   34   22   30   20   24   23    22
  15E |    6   20    9   10   33    5   22    7    6   14    4 |    34   47   36   37   50   33   44   37   39   36    36
  16E |    5   20    7   12   23    7   22   12   10   15    4 |    21   29   24   27   28   23   30   24   25   28    23
  17  |    8   16   10    8   23    4   19   10   10   24    4 |    15   23   17   16   26   15   25   13   22   19    14
  18  |    4   20    7    9   24    4   21    8    7   17    4 |    21   36   27   24   29   23   36   22   25   21    23
  19  |    6   16    8    9   27    5   19   15    7   26    4 |    19   27   24   18   27   19   29   22   20   18    19
  20  |    7   16    9    9   22    5   17    9    9   12    3 |    20   28   21   21   23   21   30   19   20   21    20
  21M |    5   11   14   10   15    7   10    8    7   26    3 |    19   24   23   20   27   17   22   20   22   18    19
  22  |    5   17   11    7   25    6   17    8    6   12    3 |    16   27   18   17   22   17   28   17   17   17    16
  23E |    8   19    9    9   29    4   28   10   10   17    4 |    20   30   24   22   28   20   29   19   25   24    20
  24  |    8   13    5   10   17    4   10    9    6   30    3 |    24   27   26   31   26   27   29   28   28   47    27
  25E |    6   23    8   13   27    5   24   13    9   10    4 |    21   35   27   28   32   27   42   22   33   22    25
  26E |   12   23    8   12   21    4   15   19   11   25    5 |    51   62   51   50   55   48   61   48   47   47    50
  27  |    8   11    5    8   35    6   10   11    8   13    3 |    60   62   57   60   68   59   63   63   61   63    60
  28E |   11   12    9    8   26    4   16    9    6   13    4 |    22   27   26   24   31   24   28   25   27   28    24
  29  |    6   21   10    9   28    7   23    7    8   18    4 |    19   33   22   22   34   21   33   18   22   17    20
 X30E |   14   24   15   16   22   18  ---   12  ---  ---    7 |    69   72   71   73   46   66  ---   68  ---  ---    68
  31  |    8   17   10   31   46    5   22    8    7   24    6 |    14   25   22   33   45   15   26   16   14   21    16
 X32M |    9   16   10    8  ---    5   15    9    8   14    4 |    23   32   30   27  ---   26   34   24   29   28    26
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |    8   16    9   11   27    5   17   12    8   21      |T   28   33   28   28   35   30   33   27   26   26    29
 WRMS |    7   16    9   11   25    5   16   10    7   20      |NE  22   30   24   24   32   22   31   24   24   25    22
 MEDI |    7   16    9    9   25    5   17    9    8   17      |MD  21   30   24   24   31   22   29   22   24   22    22

Table 3.1642.6   GPS week: 1642   Day: 6   MJD: 55744.000                            

        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  |    2  ---  ---  ---  ---   66  ---  ---  ---  ---    0 |   104  ---  ---  ---  ---  110  ---  ---  ---  ---   105
   2  |    9   12    9    5   11    4   11   11    9   24    3 |    28   34   34   31   35   30   30   35   33   26    30
   3  |    8   12    4    9   21    3   10    8    7   19    3 |    15   22   15   15   21   14   22   13   17   23    13
   4  |   10    7    6    6   17    3   12    7    7   40    4 |    34   38   37   33   43   35   37   36   34   42    34
   5  |    8   17    8    9   21    4   20    7    8   19    4 |    21   31   23   23   26   22   35   25   25   30    23
   6  |    9   12    5    8   18    3    9    7    6   16    3 |    14   20   15   14   21   12   20   10   15   17    12
   7  |    8   20    8    7   40    5   19    9    6   40    5 |    33   44   37   34   53   32   41   34   34   42    33
   8  |    7   11    9    9   30    4    9   12    8   16    3 |    22   28   26   24   38   21   29   23   25   21    22
   9  |   14   13   10    9   30   12   15   44   11   28    7 |    65   65   63   64   60   60   66   84   69   61    64
  10  |    7   11    8    6   18    4   10    7    7   24    3 |    18   22   17   17   24   17   22   23   20   24    17
  11  |    8   11    7    6   20    6   15    5    5   21    3 |    43   52   51   44   58   45   52   43   46   41    45
  12E |    6   23   10   11   36    4   25   14    7   13    5 |    18   34   22   23   38   20   32   26   20   21    20
  13E |    9   13    8    7   30    4   21    9    9   13    4 |    18   28   24   21   29   18   29   22   20   20    20
  14E |    6   13   10   10   26    6   25    7    8   16    4 |    27   32   33   25   34   27   34   24   25   32    27
  15E |    7   27   10    7   30    3   21    7    7   10    4 |    20   40   23   22   26   19   27   20   23   20    20
  16E |    8   25    8   11   22    6   18   13    7   15    4 |    18   30   21   20   24   21   26   21   21   27    19
  17  |    7   16   11    7   22    5   17   10    6   25    4 |    13   21   16   12   24   10   23   14   10   20    11
  18  |    8   19   11    6   22    4   25    7    8   19    4 |    23   33   24   21   25   23   39   21   25   24    22
  19  |    8   19    9    7   23    4   22   14    8   26    4 |    17   35   25   20   26   19   38   26   23   18    21
  20  |    5   15    8    9   25    6   17    5    6   14    3 |    19   25   20   18   24   17   29   16   17   17    18
  21  |    6   13    8    9   12    5   12    6    5   24    3 |    26   33   29   30   32   26   27   29   26   27    26
  22  |    9   19   10    5   21    6   22   11   10   13    4 |    16   28   18   17   19   18   31   19   19   19    16
  23E |    8   23   12    8   40    3   27    7   10   19    5 |    17   30   22   22   33   16   26   19   19   25    17
  24  |    8   11    4    5   20    3   10    4    4   33    3 |    33   36   38   38   42   37   37   34   38   54    36
  25E |    7   22    9    9   30    6   22   10    9   15    4 |    25   37   31   26   38   28   44   25   30   29    27
  26E |   11   21    9   10   18    6   14   13    8   16    4 |    56   66   57   60   63   57   63   58   60   59    58
  27  |    7   13    5    6   31    7   10    8    6   12    3 |    48   50   52   50   59   49   54   47   44   46    48
  28E |   10   14    8    6   20    4   14    9    7   14    3 |    20   28   25   22   25   21   32   22   24   25    21
  29  |    6   19    9    6   16    4   25    5    5   19    3 |    19   32   23   22   26   18   33   19   17   20    20
 X30E |   13   28   19   14   48   22  ---   11  ---  ---    8 |    76   83   75   72   71   71  ---   79  ---  ---    74
  31  |    8   17   10   19   42    5   22   10   10   22    5 |    17   29   22   24   43   20   29   17   20   18    17
 X32  |   10   14    7    6  ---    5   15    6    8   12    3 |    18   24   23   17  ---   19   30   18   19   22    19
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |    8   17    9    9   26    5   18   12    8   22      |T   29   35   30   28   36   29   34   29   27   29    29
 WRMS |    8   17    8    8   22    5   16    9    6   19      |NE  26   33   29   27   34   26   35   28   27   29    26
 MEDI |    8   15    9    7   22    4   17    8    7   19      |MD  20   32   24   23   32   21   31   23   23   24    21



Table 4: Precise Navigation Summary.

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

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

Table 4.1642   GPS week: 1642   MJD: 55738.0-55744.0

CENT| CLK EPO  |        BRUS       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3046 |U   13    11    33 |U    6     8    27 |U   11    14    22 |
emr | emr 2969 |U   14    15    39 |U   10    12    40 |    13    14    25 |
esa | esa 2976 |    13    12    30 |U    5     8    26 |    10    13    22 |
gfz | gfz 2968 |U   13    13    34 |U    7    10    33 |U   10    13    21 |
grg | grg 2934 |    13    13    33 |U    7     9    42 |    11    18    26 |
igr | igr 2974 |    13    12    30 |     6     8    25 |    10    13    22 |
igs | igs 2952 |    12    12    31 |     6     9    27 |    11    14    23 |
jpl | jpl 2876 |    22    14    45 |U    8    15    41 |    14    39    61 |
mit | mit 2976 |U   13    12    32 |U    8    14    46 |U   13    18    33 |



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 5.1642.0   GPS week: 1642   Day: 0   MJD: 55738.0

CENT| CLK EPO  |        BRUS       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3037 |    10    11    23 |     5     6    23 |    15    13    29 |
emr | emr 2972 |    13    20    37 |     7     7    27 |    17    11    31 |
esa | esa 2976 |     9     8    19 |     5     7    23 |    15    13    31 |
gfz | gfz 2972 |     9    10    23 |     6     9    26 |    13    13    29 |
grg | grg 2880 |    12     9    26 |     7     8    30 |    12    45    36 |
igr | igr 2976 |     9    10    22 |     6     7    23 |    14    14    31 |
igs | igs 2976 |     9    10    21 |     5     7    22 |    17    14    35 |
jpl | jpl 2879 |    25    14    62 |     6     7    26 |    14    65    40 |
mit | mit 2976 |    10    10    20 |     5     6    24 |    19    16    40 |

Table 5.1642.1   GPS week: 1642   Day: 1   MJD: 55739.0

CENT| CLK EPO  |        BRUS       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3064 |     8     9    23 |     7     7    24 |     7    11    22 |
emr | emr 2972 |    10    10    28 |     7     9    25 |     7    18    23 |
esa | esa 2976 |     8     8    21 |     6     8    21 |     7    12    21 |
gfz | gfz 2972 |     8     7    21 |     6     9    22 |     7    14    19 |
grg | grg 2976 |     9     8    21 |     7     7    41 |     6    12    22 |
igr | igr 2976 |     9     9    19 |     6     8    24 |     6    11    20 |
igs | igs 2970 |     8     8    22 |     5     7    20 |     6    13    19 |
jpl | jpl 2880 |    11    11    29 |     7     8    22 |     7    20    23 |
mit | mit 2976 |     9     9    22 |     6     8    21 |     9    12    21 |

Table 5.1642.2   GPS week: 1642   Day: 2   MJD: 55740.0

CENT| CLK EPO  |        BRUS       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3048 |    21    15    61 |     5     4    18 |     7     6    14 |
emr | emr 2972 |    25    22    67 |    11    19    28 |     9     6    18 |
esa | esa 2976 |    23    17    59 |     4     6    20 |     7     6    14 |
gfz | gfz 2969 |    23    17    61 |     3     5    21 |     6     6    12 |
grg | grg 2976 |    24    19    61 |     4     5    35 |     7     6    16 |
igr | igr 2974 |    22    18    58 |     4     5    18 |     6     6    13 |
igs | igs 2948 |    24    19    62 |     4     6    20 |     7     6    13 |
jpl | jpl 2880 |    23    17    60 |     7    19    30 |     7     7    18 |
mit | mit 2976 |    23    18    63 |     4     7    22 |    12    18    51 |

Table 5.1642.3   GPS week: 1642   Day: 3   MJD: 55741.0

CENT| CLK EPO  |        BRUS       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3054 |    30    17    60 |    13    17    56 |    24    42    38 |
emr | emr 2968 |    24    26    49 |    14    16    53 |    25    34    40 |
esa | esa 2976 |    26    23    53 |    10    15    50 |    21    38    37 |
gfz | gfz 2968 |    15    20    59 |    10    13    57 |    22    36    37 |
grg | grg 2976 |    22    22    50 |    11    17    61 |    22    34    39 |
igr | igr 2976 |    25    22    52 |    10    15    51 |    22    39    39 |
igs | igs 2911 |    24    22    52 |    10    13    51 |    24    40    35 |
jpl | jpl 2876 |    63    24    82 |    13    21    53 |    48   155   275 |
mit | mit 2976 |    25    22    54 |    14    23    62 |    28    53    47 |

Table 5.1642.4   GPS week: 1642   Day: 4   MJD: 55742.0

CENT| CLK EPO  |        BRUS       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3043 |     6     7    18 |     5     6    21 |     8     8    17 |
emr | emr 2968 |     8    10    27 |    11    13    91 |     9     9    20 |
esa | esa 2976 |     7     7    17 |     4     7    23 |     8     9    17 |
gfz | gfz 2967 |    22    19    32 |     7     9    28 |     8     8    18 |
grg | grg 2976 |     7     9    24 |     7     9    48 |     9    10    22 |
igr | igr 2976 |     7     8    15 |     4     7    22 |     8     9    16 |
igs | igs 2941 |     6     8    19 |     5     6    28 |     8     8    17 |
jpl | jpl 2876 |    13    14    31 |     8    18    92 |     9     8    20 |
mit | mit 2976 |     7     7    19 |     9    15   118 |     9    10    37 |

Table 5.1642.5   GPS week: 1642   Day: 5   MJD: 55743.0

CENT| CLK EPO  |        BRUS       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3049 |     8     8    21 |     5     7    19 |     8     9    22 |
emr | emr 2968 |    10    11    35 |    10    11    27 |    12     7    28 |
esa | esa 2976 |     7     8    21 |     5     7    21 |     8     7    22 |
gfz | gfz 2964 |     8     7    21 |     5     7    22 |     8     6    20 |
grg | grg 2877 |     9     9    23 |     7     8    31 |    10     9    22 |
igr | igr 2970 |     8     7    21 |     5     8    18 |     9     7    22 |
igs | igs 2950 |     7     8    22 |     5     6    22 |    10     7    24 |
jpl | jpl 2870 |     9     9    29 |     7    17    28 |    10     8    31 |
mit | mit 2976 |     8     8    25 |    10    20    33 |     9     7    21 |

Table 5.1642.6   GPS week: 1642   Day: 6   MJD: 55744.0

CENT| CLK EPO  |        BRUS       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3032 |     9    13    23 |     6     8    26 |     7     6    15 |
emr | emr 2968 |    11    10    32 |    10     7    28 |    10    12    19 |
esa | esa 2976 |     9    10    23 |     5     8    23 |     7     7    14 |
gfz | gfz 2968 |     9    11    23 |     9    21    55 |     6     6    16 |
grg | grg 2880 |    10    12    26 |     6     7    48 |    11    11    23 |
igr | igr 2973 |     9    11    22 |     5     6    23 |     6     6    13 |
igs | igs 2970 |     8    10    23 |     8    16    28 |     7     7    15 |
jpl | jpl 2876 |     9    13    25 |     8    16    34 |     7     7    19 |
mit | mit 2976 |     8    11    23 |    10    18    42 |     8     9    17 |


Table 6: Earth Orientation Parameters weekly summary.                          
                                                                              
        Weekly mean and standard deviation of Centre ERP, ERP rates and       
        LOD differences with respect to IGS combined values. See Table 7 for  
        the daily summaries.                                                  
                                                                              
        Xpole,Xrt: x pole and x pole rate                          
        Ypole,Yrt: y pole and y pole rate                       
        LOD      : Length Of Day                                               
                                                                              
        AC LOD BIAS    : 21-day mean LOD bias with respect to Bulletin A     
        AC LOD BIAS RMS: RMS of AC LOD BIAS                              
                                                                              
        FLAG: "u" (used), "x" (excluded), "-" (no submission)                 
              for Xpole, Ypole, Xrt, Yrt and LOD                              

Table 6.1642   GPS week: 1642   MJD: 55738.500-55744.500

                                                         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     -25      26     -16     -3 |       3     18
            |      38      15     112      68      6 |       1
emr   uuuuu |      38       1      10     114     -7 |      23     31
            |       7      17      69      36     10 |       5
esa   uuuuu |     -34     -26     -37    -182     -1 |       7     20
            |      13      22      40      54      4 |       1
gfz   uuuuu |     -82      -9     -28    -129      0 |       7     19
            |      26      19      43      68      5 |       2
grg   uuuux |       8     -60      60    -155    -90 |     -24     60
            |      49      21     138      84    151 |      20
igr   xxxxx |     -19       0      25       5     -2 |      -3     18
            |      15      12      34      66      8 |       1
irf   xxxxx |       2       5     -11     -28      1 |      -3     18
            |      11      10      29      39      1 |       2
jpl   uuuuu |       6     -42      69     130     -2 |      -3     22
            |      79      29      39      48     12 |       5
mit   uuuuu |      -8       9     -58      27     -1 |       9     20
            |      23      20      68      57      4 |       2
ngs   uuuuu |      40      22      56     140     -3 |       7     17
            |      14      27      72     110      8 |       1
sio   uuuuu |     134     108      14     205     14 |      11     25
            |      15      21      71      65      3 |       3


Table 7.1642.0   GPS week: 1642   Day: 0   MJD: 55738.500

                                                         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 |      -8       4    -159      88      9 |       4     18
emr   uuuuu |      45      21      99     100    -14 |      31     37
esa   uuuuu |     -43     -14     -49    -175      3 |       9     20
gfz   uuuuu |     -91      -2      -3     -96     -4 |      10     21
grg   uuuux |     -89     -91     266    -285     57 |     -46     84
igr   xxxxx |     -20     -10      30      30      5 |      -2     19
irf   xxxxx |       8      17     -28     -16      1 |      -1     18
jpl   uuuuu |     152     -71     -10     219    -25 |       6     25
mit   uuuuu |      17      35    -142      13      4 |      11     21
ngs   uuuuu |      25     -10      53     223      8 |       8     16
sio   uuuuu |     145     122     -13     176      8 |      14     29

Table 7.1642.1   GPS week: 1642   Day: 1   MJD: 55739.500

                                                         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 |     -21     -24      15     -38      2 |       4     19
emr   uuuuu |      40     -18      11     136    -18 |      29     35
esa   uuuuu |     -25     -14     -79    -210      0 |       9     20
gfz   uuuuu |    -105     -21     -19    -144      3 |       8     19
grg   uuuux |      20     -61     -10     -34     46 |     -33     76
igr   xxxxx |       1      11      -8     104      9 |      -2     19
irf   xxxxx |      -9     -11      42    -106      0 |      -2     18
jpl   uuuuu |      -9       5      95     158     -5 |       1     22
mit   uuuuu |     -30     -24      70     -64     -2 |      11     20
ngs   uuuuu |      61      61     -56     264      0 |       9     17
sio   uuuuu |     118      83     131     103     12 |      11     25

Table 7.1642.2   GPS week: 1642   Day: 2   MJD: 55740.500

                                                         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 |     -19     -43     131     -14     -5 |       2     18
emr   uuuuu |      41      -3      -8     114    -19 |      24     31
esa   uuuuu |     -49     -14     -96    -210      1 |       7     19
gfz   uuuuu |    -109      19     -52    -242     -1 |       6     17
grg   uuuux |      32     -71      92    -138     18 |     -15     53
igr   xxxxx |     -32      15     -18      54      1 |      -4     18
irf   xxxxx |      14      15      17     -36     -1 |      -4     17
jpl   uuuuu |     -87     -77      97     114     -6 |      -3     19
mit   uuuuu |      24      21     -22      19     -5 |       9     19
ngs   uuuuu |      36      -6      53     251      5 |       8     16
sio   uuuuu |     153     138      94     203     14 |       8     20

Table 7.1642.3   GPS week: 1642   Day: 3   MJD: 55741.500

                                                         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 |     -49     -28      -4     -38     -5 |       3     17
emr   uuuuu |      47      -5     -47     180     -8 |      21     30
esa   uuuuu |     -16     -37     -21    -134      2 |       7     20
gfz   uuuuu |     -79     -38      -4    -152      5 |       5     17
grg   uuuux |     -11     -77     107    -110    -16 |       0     11
igr   xxxxx |      -2      -1      39      14     -5 |      -4     18
irf   xxxxx |       0       9     -26     -16      2 |      -5     18
jpl   uuuuu |     -35     -34      57      83     -2 |      -7     21
mit   uuuuu |     -15      22     -79      10     -3 |       7     19
ngs   uuuuu |      36      40      74      79    -11 |       7     16
sio   uuuuu |     122     118      -8     193     18 |       7     20

Table 7.1642.4   GPS week: 1642   Day: 4   MJD: 55742.500

                                                         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 |       4     -34     146     -83     -8 |       2     17
emr   uuuuu |      31      20     -70      67      1 |      18     28
esa   uuuuu |     -50     -56      17    -259     -8 |       6     20
gfz   uuuuu |     -68     -25    -112     -51     -1 |       6     17
grg   uuuux |      68     -47     -10    -104   -226 |      -3     13
igr   xxxxx |     -41       6      15     -72    -15 |      -4     19
irf   xxxxx |     -15       3     -27     -33      1 |      -5     18
jpl   uuuuu |      42     -57      99     126     11 |      -9     21
mit   uuuuu |     -38      10     -63      26     -4 |       7     19
ngs   uuuuu |      60      43     166     121     -7 |       6     16
sio   uuuuu |     116     116     -18     214     16 |       8     21

Table 7.1642.5   GPS week: 1642   Day: 5   MJD: 55743.500

                                                         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 |     -39     -22     113      61     -4 |       5     21
emr   uuuuu |      30     -20     108     100      6 |      20     32
esa   uuuuu |     -34       4      -6     -94     -3 |       8     22
gfz   uuuuu |     -91      -2      16    -168      4 |       9     22
grg   uuuux |      27     -45     144    -227   -317 |     -21     61
igr   xxxxx |     -23      -8      86     -74     -2 |      -2     20
irf   xxxxx |       3      -1     -33      16      1 |      -2     21
jpl   uuuuu |      32     -18      83     126      3 |      -5     25
mit   uuuuu |      -3      -9    -109     125     -3 |       9     23
ngs   uuuuu |      35       6      -4     -29    -11 |       9     20
sio   uuuuu |     140      85     -72     320     15 |      13     29

Table 7.1642.6   GPS week: 1642   Day: 6   MJD: 55744.500

                                                         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 |      66     -26     -60     -92     -8 |       3     17
emr   uuuuu |      32       9     -21     100      2 |      18     27
esa   uuuuu |     -23     -49     -24    -196      2 |       5     17
gfz   uuuuu |     -32       4     -24     -54     -7 |       8     19
grg   uuuux |      10     -30    -168    -190   -192 |     -53    119
igr   xxxxx |     -14     -16      31     -21     -5 |      -5     17
irf   xxxxx |       9       1     -23      -4      2 |      -4     19
jpl   uuuuu |     -55     -40      63      81      7 |      -7     23
mit   uuuuu |     -14      10     -58      56      3 |       7     19
ngs   uuuuu |      28      20     107      69     -7 |       6     16
sio   uuuuu |     143      92     -13     223     12 |      14     30



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