[IGSREPORT-17683] Wk 1542 IGS Final Orbits

Jim Ray IGS.ACC at noaa.gov
Thu Aug 13 05:06:33 PDT 2009


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IGS Electronic Report   13 Aug 05:06:56 PDT 2009      Message Number 17683
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Author:  AC Coordinator / NOAA NGS

sum-file Version 2.0
Final IGS Orbit Combination - Week 1542   (Jul 26, 2009 - Aug 01, 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:

igs1542[0-6].sp3  IGS GPS ephemeris files in SP3 format.
igs1542[0-6].clk  IGS GPS satellite and station clocks in SP3 format.
igs1542[0-6].cls  IGS GPS clock combination summary report.
igs15427.erp      Earth Rotation Parameters (ERP) and their rates as well as
                  Universal Time (UT1-UTC) and Length Of Day (LOD) associated 
                  with IGS ephemerides.
igs15427.sum      Complete report.

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

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

 2. Rapid (IGR) orbits/clocks are included in the combination for statistics only.
    Starting week 1478, a new solution from CNES/GRGS (GRG) is included for
    evaluation and statistics only.

 3. The following centre clock solutions, which provide broadcast clock
    corrections, were excluded from the combination but kept in the combination
    statistics:
             -> Centre: NGS 

 4. The following clock solutions were excluded from the combination because they
    were biasing the combined clock solutions (clock shifts/outliers) but were
    kept for the RMS computation.  Duplicate entries can arise due to separate
    combination runs for the 30-s clocks ACs (listed first) and the 5-min clock
    ACs (listed second).
    
               Day | Centre | PRN/STA list
               ----+--------+---------------
                0  |  ALL   | 1 1
                0  |  COD   | 30 30 DAV1
                0  |  EMR   | WTZR
                0  |  ESA   | 18 30
                0  |  GFZ   | 12 23 ADE1 AUCK BRUS CEDU HOB2 NYA1 PERT
                0  |  GRG   | DAV1 ONSA
                0  |  JPL   | 32
                0  |  MIT   | 18 18 HRAO
                1  |  ALL   | 1
                1  |  COD   | WTZR
                1  |  EMR   | MIZU WTZR
                1  |  ESA   | BHR1
                1  |  GFZ   | 23 ONSA
                1  |  GRG   | ONSA
                1  |  JPL   | 32
                1  |  MIT   | 4 18 4 18 BOR1 IRKJ STJO
                2  |  ALL   | 1 1
                2  |  COD   | WTZR
                2  |  EMR   | KERG WTZR
                2  |  ESA   | WHIT
                2  |  GFZ   | KIRU SCH2 VESL VILL
                2  |  GRG   | USNO
                2  |  JPL   | 32
                2  |  MIT   | 10 15 16 18 10 15 16 18 ALGO TWTF
                3  |  ALL   | 1
                3  |  COD   | WTZR
                3  |  EMR   | MIZU WTZR
                3  |  GFZ   | 12 14 16 23 28 ANKR BRFT FAA1 KIRU WHIT YELL
                3  |  GRG   | USNO
                3  |  JPL   | 32 UNSA
                3  |  MIT   | 18 18 BOR1 IRKJ SYDN
                3  |  NGS   | 1
                4  |  ALL   | 1 1
                4  |  COD   | 26 26 WTZR
                4  |  EMR   | MIZU
                4  |  ESA   | 26
                4  |  GFZ   | 18 23 CAS1 FLIN NICO NYA1 UNSA WTZR
                4  |  GRG   | AMC2
                4  |  JPL   | 32
                4  |  MIT   | 18 19 18 19 NICO WTZR
                5  |  ALL   | 1 1
                5  |  COD   | 26 26 ALBH MATE
                5  |  EMR   | ALBH YELL CHUR MIZU WTZR YELL
                5  |  GFZ   | 8 13 14 15 23 26 CAS1 CHUR DAV1 MAW1 NTUS RCMN SUTH
                5  |  GFZ   | SUTM VESL
                5  |  GRG   | DAV1 USNO
                5  |  JPL   | 32 DAV1
                5  |  MIT   | 18 18 SYDN
                6  |  COD   | 26 26 WTZR
                6  |  EMR   | MIZU WTZR
                6  |  ESA   | 26 UNSA
                6  |  GFZ   | 15 18 23 CAS1 HARB
                6  |  GRG   | 1 DAV1 IRKJ TWTF USNO
                6  |  JPL   | 32 DAV1
                6  |  MIT   | 18 18 IRKJ SYDN TWTF
                6  |  NGS   | 1

    
 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  |  GFZ   | ~16:55 | ~ -0.31 ns
                3  |  GFZ   | ~11:55 | ~ -0.35 ns

 6. The following table lists all maneuvered satellites for this week.
    The solutions from COD and ESA, which modeled the maneuver, are used
    that day for combination. An associated accuracy code of 0 (unknown) 
    is given if only one AC is left (no redundancy). For the long arc  
    evaluation the arc is split into two parts at the given maneuver epoch.
    
               PRN |    Date    | Ref. NANU
               ----+------------+----------
               G20 | 2009_07_30 | 2009042 
               G20 | 2009_07_30 | 2009043 
               G20 | 2009_07_30 | 2009050 

 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  |     .6     .3    1.3     -15    -13    -20    -.49
       EMR  |    9.7   -6.0  -13.4     103     -6     34    -.11
       ESA  |   -1.9    1.9   -3.4       6    -27      2    -.06
       GFZ  |     .1     .8    1.2      19    -30      4    -.22
       GRG  |    3.0    -.5    7.5      10     19    122    -.03
       JPL  |   -4.5   -1.9    2.8       3     23     -7     .02
       MIT  |    3.6   -5.2    2.7       5      8      0    -.30
       NGS  |    6.2   -3.8    5.1     -21    -44     -8    -.40
       SIO  |    -.7   -3.8  -21.0     -75    -59      5     .07


 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 1.1542.a). It also displays the computed satellite
position sigmas for the combined orbits (table 1.1542.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 2.1542.[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 3.1542.[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 5.1542.0-6).

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 1542 summary.                       (Jul 26, 2009 - Aug 01, 2009)

Table 1.1542.a   GPS week: 1542   MJD: 55038.000-55044.000

         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  236|    0     0     0    49    -1   -10  -.12    8    7 |    -285    -350     15     68
        |    0     0     1    11     9    13   .03           |     317     368
emr   75|    3     0    -3  -247   -30   -17   .43   18   18 |    2069    -231     17     96
        |    1     2     1    27    25    17   .02           |     595    1599
esa  127|    0     1     5   -36   -13    14   .39   10   10 |   -1172     984     18    112
        |    0     1     2    23    18    17   .03           |    1103    1478
gfz  189|    1     0     0   -53     4   -14  -.11   11   11 |      45     274     24    113
        |    0     0     0    43    56    13   .03           |     387     627
grg  110|    3     0     0   -25   -26    13  1.07   34   32 |   -7108    1060     78    229
        |    1     1     1    19    25    75   .08           |    6875    1530
igr  n/a|    0     0     0    10   -13   -47   .08    5    5 |   27342    -880     19     70
        |    0     0     0    11    16    22   .03           |    1922    1807
jpl  127|    0     1    -3    -1   -68    31   .58   16   15 |    1124    -307     17    100
        |    1     1     1    19    14    33   .04           |     883    1849
mit  286|    0     0     0     0   -43    10  -.25   10    9 |  -15002    -781     20    151
        |    0     0     0    17    14    15   .02           |     746     928
ngs  226|   -1     0     0    87    81     2  -.29   11    9 |   -8225   31494   2135   3770
        |    1     1     1    43    38    20   .03           |   63346   88958
sio  254|   -4     2     1   164    83   -19  -.06   20   20 |     ---     ---    ---    ---
        |    1     1     2    27    14     6   .04           |     ---     ---


Table 1.1542.b   GPS week : 1542   MJD: 55038.000-55044.000   

         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  |   18   11   11   10    9    7   14 |
   2  |    5    5    5    4    4    4    4 |
   3  |    4    4    4    4    4    4    4 |
   4  |    5    5    5    5    5    4    4 |
   6  |    4    4    4    4    4    4    4 |
   7  |    5    5    5    5    5    4    4 |
   8  |    5    4    4    4    4    4    4 |
   9  |    4    4    4    4    4    4    3 |
  10  |    4    4    4    4    3    3    3 |
  11  |    6    5    4    4    4    4    5 |
  12  |    7    5    5    6    4    4    4 |
  13  |    5    5    5    4    5    4    4 |
  14  |    6    6    4    4    5    4    4 |
  15  |    5    5    5    5    4    5    5 |
  16  |    6    6    6    6    6    5    5 |
  17  |    5    5    5    5    5    4    4 |
  18  |   16    6    6    6    5    5    5 |
  19  |    6    5    5    4    4    4    4 |
  20  |    6    6    5    5    0    5    5 |
  21  |    5    5    5    5    5    5    5 |
  22  |    4    4    4    4    4    4    4 |
  23  |    6    6    5    5    5    5    5 |
  24  |    4    4    4    4    4    4    4 |
  25  |    4    4    4    3    3    4    3 |
  26  |    5    5    5    6    6    5    5 |
  27  |    4    4    4    4    3    4    4 |
  28  |    5    5    6    5    5    5    4 |
  29  |    6    6    5    5    5    5    5 |
  30  |    6    8    5    5    4    5    5 |
  31  |    5    6    5    5    5    5    5 |
  32  |    5    5    5    5    5    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 2.1542.0   GPS week: 1542   Day: 0   MJD: 55038.000                            

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  236|    0     0    -1    38   -18     2  -.17    9    8 |      19    -789     14     64
        |                     29    17                       |
emr   75|    1     3    -2  -216   -66   -18   .39   16   16 |    1785     277     16     89
        |                     35    19                       |
esa  127|   -1     0     9     3    16    19   .33   12   12 |     532    1182     15    100
        |                     19    32                       |
gfz  189|    2     0     1   -26    73   -31  -.11   11   11 |    -293      38     22    103
        |                    -11   -32                       |
grg  110|    4     0     2   -59   -30    14  1.05   35   35 |     129    -110     72    216
        |                     56    28                       |
igr  n/a|   -1     0     1     9   -19   -45   .03    6    6 |   29219    -561     19     73
        |                     11    -3                       |
jpl  127|    0     0    -3   -14   -81    25   .55   16   14 |    1450    -109     15     88
        |                      5    37                       |
mit  286|   -1     0    -1   -10   -53    27  -.28   12   11 |  -15744     295     20    162
        |                     16     0                       |
ngs  226|   -2     0     1   142    63    37  -.29   16   13 | -151803  233089   2076   3862
        |                   -133     4                       |
sio  254|   -3     1    -2   128    75   -20  -.11   20   19 |     ---     ---    ---    ---
        |                    -79   -52                       |

Table 2.1542.1   GPS week: 1542   Day: 1   MJD: 55039.000                            

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  236|    0     0    -1    45    -4   -15  -.16    9    8 |    -726     245     21     80
        |                     31     6                       |
emr   75|    3     2     0  -223    -4   -29   .42   18   18 |    2316   -1809     15    102
        |                     68     0                       |
esa  127|    0     2     7   -58    -6    36   .40   11   11 |   -2278    3055     21    119
        |                     60    52                       |
gfz  189|    1    -1     0   -96   -44     0  -.16   10   10 |     283    -684     28    137
        |                     19   -23                       |
grg  110|    3     0    -1   -21     4   -14  1.02   35   33 |     774   -1680     77    223
        |                    -15   -47                       |
igr  n/a|    0     0     0    24    14   -41   .04    5    5 |   29111   -2653     20     65
        |                    -17   -43                       |
jpl  127|    0     1    -3    25   -60    81   .54   19   17 |    1755   -2175     18     90
        |                     34   -15                       |
mit  286|    0     0     0    21   -49   -15  -.23   12   10 |  -14091   -2204     17    142
        |                      4    -6                       |
ngs  226|   -2    -2    -1   138   141   -11  -.25   14   13 |   14298    1280   2505   3824
        |                   -110   -64                       |
sio  254|   -5     0     0   185    79   -24  -.05   20   20 |     ---     ---    ---    ---
        |                   -113   -51                       |

Table 2.1542.2   GPS week: 1542   Day: 2   MJD: 55040.000                            

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  236|    1     0     0    73     0   -36  -.11    8    8 |    -559    -344     15     68
        |                    -17    23                       |
emr   75|    5     1    -2  -248   -29    13   .42   19   19 |    3081   -1449     19    102
        |                     61   -11                       |
esa  127|   -1     1     5   -59   -13     9   .39   10   10 |   -2057     707     16    103
        |                     28    48                       |
gfz  189|    0     0    -1  -101   -54     4  -.16   11   11 |    -385    1235     23    108
        |                      3   -40                       |
grg  110|    4     1     0     0   -56   -14  1.13   33   30 |    -221     717     86    237
        |                    -17   -34                       |
igr  n/a|    0     1     1     7   -13   -63   .11    6    6 |   29200   -2011     19     77
        |                     31   -33                       |
jpl  127|    2     2     0    11   -78    -4   .60   17   15 |    2347   -1429     16     94
        |                     -1   -26                       |
mit  286|    0    -1    -1   -20   -51    21  -.22   10    9 |  -14255    -367     20    150
        |                      8     2                       |
ngs  226|   -2    -1     0   102   115     9  -.26   10    8 |   11693    1899   2266   3749
        |                    -69  -135                       |
sio  254|   -3     1     0   143   100   -23  -.00   19   18 |     ---     ---    ---    ---
        |                   -105   -45                       |

Table 2.1542.3   GPS week: 1542   Day: 3   MJD: 55041.000                            

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  236|    0     0    -1    43     3    -2  -.13    8    7 |    -405    -121     18     75
        |                     42   -30                       |
emr   75|    3    -2    -4  -300    -2   -43   .44   19   19 |    2483   -1506     17     82
        |                     76   -39                       |
esa  127|   -1     2     4   -48     0    39   .41    9    9 |   -2372    2758     17    100
        |                     15     6                       |
gfz  189|    2    -1     0    20   -33   -23  -.09   11   11 |      74     238     23     91
        |                     -7   -45                       |
grg  110|    0    -2     1   -34   -23    65   .96   31   28 |  -12059    1940     78    249
        |                     89   -48                       |
igr  n/a|    0     0     0   -10     3   -44   .09    6    5 |   27780   -2581     17     64
        |                     32   -68                       |
jpl  127|    2     0    -3   -30   -59    36   .56   16   14 |    1564   -2012     16    111
        |                     65     9                       |
mit  286|    0    -1     0    16   -60     9  -.26   10    9 |  -15594    -108     22    129
        |                      4    -9                       |
ngs  226|   -1     0     1    18    98   -20  -.30    9    7 |   17534   -7234   2048   3267
        |                     19   -12                       |
sio  254|   -4     3     3   207    68   -26  -.08   20   19 |     ---     ---    ---    ---
        |                   -123   -44                       |

Table 2.1542.4   GPS week: 1542   Day: 4   MJD: 55042.000                            

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  236|    0     0     1    57     2     2  -.11    7    6 |    -385    -242     13     70
        |                    -14    11                       |
emr   75|    6     2    -2  -243   -56    -9   .45   18   18 |    1454      73     16     90
        |                     46    25                       |
esa  127|   -1     0     1   -43   -24     0   .39    9    9 |    -978    -501     19    113
        |                     26    37                       |
gfz  189|    1    -1    -1   -76    46   -16  -.10   13   13 |     -49     -50     26    124
        |                    -18   -23                       |
grg  110|    3    -3     0   -15   -22   139  1.05   32   35 |  -12880    2701     81    236
        |                    -61    26                       |
igr  n/a|    0     0     0    20   -31   -43   .10    5    5 |   25629    -454     20     74
        |                    -50    -4                       |
jpl  127|    0     3    -2    15   -77     1   .61   18   16 |     -80     208     19    108
        |                    -51   -19                       |
mit  286|    0    -1     0   -17   -19    24  -.25    8    7 |  -15742   -1105     23    153
        |                      6   -21                       |
ngs  226|   -1    -1     0    70    32   -13  -.33   10    8 |   16025       8   1707   3560
        |                    -44    17                       |
sio  254|   -3     4     2   178    98    -7  -.04   20   19 |     ---     ---    ---    ---
        |                   -110   -47                       |

Table 2.1542.5   GPS week: 1542   Day: 5   MJD: 55043.000                            

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  236|    0     0     0    44    -8    -4  -.09    7    7 |     139    -798     13     68
        |                      5    -1                       |
emr   75|    3    -2    -4  -251   -41   -21   .45   17   17 |    1445     -38     18    107
        |                     30     5                       |
esa  127|    0     0     2   -16   -29     4   .41   10   10 |    -732    -772     19    124
        |                     29    21                       |
gfz  189|    1     0     0   -57    69    -7  -.08    9    9 |     -79     265     24    112
        |                    -34   -20                       |
grg  110|    5     0    -3   -13   -60     7  1.07   35   35 |  -12499    2136     82    225
        |                    -31    54                       |
igr  n/a|    0     0     0    15   -26   -83   .08    5    5 |   25345    -463     20     67
        |                    -41   -24                       |
jpl  127|    0     1    -4   -15   -79     8   .59   16   14 |     285     158     20    115
        |                     13    66                       |
mit  286|    0    -1     0    17   -29    -2  -.26    8    7 |  -14334   -1756     18    154
        |                      5   -15                       |
ngs  226|    0     0     1    64    45    13  -.33   10    9 |   17340   -4460   2204   3872
        |                    -69    36                       |
sio  254|   -5     2     2   163    97   -19  -.09   21   22 |     ---     ---    ---    ---
        |                    -90   -52                       |

Table 2.1542.6   GPS week: 1542   Day: 6   MJD: 55044.000                            

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  236|    0     0     0    43    12   -17  -.09    6    6 |     -84    -403     13     57
        |                     -5   -20                       |
emr   75|    2    -2    -6  -246   -14   -12   .46   17   17 |    1925    2829     18    102
        |                      8    -7                       |
esa  127|    0    -1     5   -30   -38    -6   .42   11   11 |    -320     459     19    130
        |                      8    59                       |
gfz  189|    1     0     0   -39   -26   -22  -.08   10   10 |     767     876     26    118
        |                    -29   -28                       |
grg  110|    3    -1     0   -36     4  -103  1.20   34   31 |  -13005    1717     75    223
        |                    -10     7                       |
igr  n/a|   -1     0     0     8   -23    -9   .11    4    4 |   25113    2560     19     74
        |                    -52     3                       |
jpl  127|    0     0    -4    -3   -42    70   .64   15   13 |     547    3206     19     94
        |                    -19   -42                       |
mit  286|    0     0     0    -4   -36     7  -.25    9    8 |  -15257    -224     23    169
        |                     15   -15                       |
ngs  226|    0     0     0    77    70     0  -.29    8    7 |   17333   -4124   2143   4256
        |                    -45   -14                       |
sio  254|   -6     3     3   145    67   -15  -.09   23   21 |     ---     ---    ---    ---
        |                    -85   -38                       |

       
       
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 3.1542.0   GPS week: 1542   Day: 0   MJD: 55038.000                            

        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 |   23  ---  ---  --- 2923   31  ---   16   36  ---   17 |    30  ---  ---  --- 9999   39  ---   35   40  ---    32
   2  |    7   13   10    8   56    7   11   11   19   25    4 |    22   29   32   27   32   27   26   32   32   29    26
   3  |    4   10   10    8   32    6    9   12   12   23    4 |    12   23   18   17   26   13   22   12   14   27    14
   4  |    8   11    8    6   39    8    9   11   18   31    4 |    32   42   40   37   28   38   39   42   40   37    36
   6  |    5    9    8    9   27    7    9   10   12   20    3 |    12   25   21   18   26   15   24   12   16   22    15
   7  |    7   15   15    9   31    5   18   10   12   21    5 |    15   27   20   20   35   16   27   17   15   15    15
   8  |    9   11   12    7   23    4    9   15   14   22    4 |    14   22   21   18   33   18   22   24   22   23    18
   9  |    8    9   10    6   31    5   10    9   20   16    4 |    21   27   28   25   24   23   25   28   33   18    24
  10  |    8   11   11   13   25    5    9   11   17   13    4 |    19   26   28   27   22   23   24   27   31   28    24
  11  |   10   11   14   10   37    7   16   21   15   19    5 |    40   46   51   44   39   42   41   46   41   36    42
  12E |   11   18   15   25   30    5   19   11   20   20    6 |    18   27   18   36   34   19   25   20   27   30    19
  13  |    6   17   14    7   25    6   17   15   16   13    4 |    23   33   27   30   36   26   29   28   27   23    25
  14  |   19   16   11   10   39    8   17   16   17   14    6 |    44   56   49   46   48   46   53   46   41   50    46
  15E |    7   15   13   13   51    7   16   11   15   18    5 |    13   25   20   23   41   19   21   21   25   21    17
  16E |    9   25   14   15   20    5   20   14   15   18    6 |    21   36   22   25   30   20   31   19   21   22    20
  17  |    9   16   12    9   33    6   19   10   13   17    4 |    17   33   23   21   49   20   35   17   16   21    19
 X18  |   32   36   44  ---   49   20  ---   20   18  ---   16 |    27   39   40  ---   46   20  ---   17   20  ---    15
  19  |    9   19   10    8   39    6   20   20   15   20    5 |    16   30   19   18   36   17   30   21   21   22    17
 X20  |    8   19   15  ---   33    9   20   13   13   13    5 |    11   24   15  ---   30   11   19   10   12   11    10
 X21  |    6   10   12  ---   27    6   11    9   13   30    5 |    23   31   31  ---   26   27   26   30   32   31    27
  22  |    7   15    9    8   28    4   15    9   12   13    4 |    12   27   18   18   38   14   25   14   13   12    15
  23E |    8   24   16    8   28    6   26   10   12   12    5 |    17   35   21   22   27   20   34   20   18   23    20
  24  |    7   10    7    8   53    5    8   11   17   21    4 |    26   35   32   32   31   32   28   35   38   23    30
  25  |    6   11   13    8  ---    3   10    7   11   22    4 |    14   20   17   20  ---   16   17   18   15   20    14
  26  |    8   18   12   10   33    6   13    9   11   16    4 |    90   94   92   91   94   91   87   94   94   91    91
  27  |    7   10   12    7   33    4    9   10   20   15    4 |    19   26   24   21   25   22   24   26   28   18    21
  28E |    9   14   13   12   25    6   15    8   16   14    4 |    23   29   22   26   31   24   30   25   28   30    23
  29  |    8   19   11   11   36    6   23   13   17   22    5 |    18   32   22   20   31   19   33   20   21   25    20
  30E |   11   26   13   13   49    8   21   15   20   21    6 |    69   70   66   66   71   64   70   68   65   72    67
  31  |    6   20   13    9   28    6   21   11   16   22    5 |    14   29   20   22   37   14   28   15   14   18    15
  32  |    9   14    9   11   26    8   15   15   16   28    5 |    12   21   18   20   23   15   21   17   16   30    15
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |    9   16   12   11   35    6   16   12   16   20      |T   24   33   29   29   36   26   31   27   28   28    25
 WRMS |    8   16   12   11   35    6   14   11   13   19      |NE  18   29   25   23   31   21   26   22   23   23    20
 MEDI |    8   15   12    9   32    6   15   11   16   20      |MD  19   29   22   23   32   20   27   21   25   23    20

Table 3.1542.1   GPS week: 1542   Day: 1   MJD: 55039.000                            

        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 |   21  ---  ---   21  ---   17  ---   14   17  ---   11 |    29  ---  ---   44  ---   38  ---   31   28  ---    27
   2  |   10   13   15    9   44    6   13   10   17   27    5 |    12   25   28   19   21   15   17   15   20   20    15
   3  |    8   11   11    8   31    5   12   10   13   21    4 |    13   22   19   19   23   14   21   15   20   27    16
   4  |    9   14   10    9   38    4   12   11   16   31    5 |    18   30   27   22   23   20   24   24   23   27    20
   6  |    8    9    7    7   23    5   11   10   12   18    3 |    14   21   21   15   26   15   22   13   19   21    15
   7  |    5   18   13    9   39    3   19   10   14   22    5 |    11   25   20   15   34   13   23   14   19   15    13
   8  |    6   11   15    5   25    3   11   10   13   22    4 |     9   15   21   11   28   11   18   14   13   19    11
   9  |    6   13    9    8   30    5   13    7   14   17    4 |    13   18   19   11   27   12   17   14   16    8    12
  10  |    7   14    8    7   28    6   11   10   16   11    4 |    14   21   16   14   24   10   17   17   13   19    13
  11  |   10   14    7    6   65    6   17   15   11   18    4 |    27   30   27   23   30   23   30   29   21   22    24
  12E |    9   17   10   12   29    4   22   11   11   22    5 |    18   27   20   19   32   16   24   18   18   26    17
  13  |    8   20   12    7   26    5   20   18   15   13    5 |    20   28   22   24   33   20   23   26   23   21    21
  14E |   14   20   11   14   41    6   20   12   13   15    5 |    23   33   33   28   39   27   33   31   28   30    26
  15E |    6   17   12   14   39    5   19   12   14   15    5 |    13   23   18   19   37    9   21   11   13   16    11
  16E |    7   30   10   17   25    6   26   13   14   16    6 |    23   36   24   24   24   20   32   22   29   23    22
  17  |    9   17   11   10   45    6   22    7   13   20    5 |    17   34   24   20   41   16   32   16   17   19    18
 X18  |   10   24    9  ---   56    8  ---   10   13   18    6 |    14   29   19  ---   48   17  ---   15   14   16    13
  19  |    8   17   12    7   45    5   23   18   13   20    5 |    15   28   21   16   36   16   30   20   21   19    16
 X20  |    9   21   10  ---   26    5   22   12   15   14    5 |    16   22   14  ---   22   11   21   14   14   11    11
 X21  |    9    9    9  ---   24    6   14   10   14   30    5 |    15   23   20  ---   22   19   21   21   24   18    18
  22  |    8   17    9    7   29    4   20    8   10   13    4 |    12   24   14   12   35   12   26   10   11   10    11
  23E |    9   27   12   15   30    6   29   12   14   14    6 |    16   31   19   20   33   14   28   17   21   16    15
  24  |    8    9    7    8   32    6   14   11   14   21    4 |    17   23   18   23   14   21   18   24   25   16    19
  25  |    5   11   11    7  ---    5   12    7   14   21    4 |    11   17   17   11  ---    9   14   13   16   18    11
  26  |   13   22   11    7   32    4   16   10   10   17    5 |    95   95   95   96  109   94   94   95   95   98    95
  27  |    7   13    9    9   34    5   14    9   15   15    4 |    14   17   17   11   30   10   17   14   14   10    11
  28E |    7   11   14   11   25    6   17    8   13   17    4 |    20   27   27   22   43   23   23   23   24   21    22
  29  |   11   22   13   11   32    6   26    8   14   20    5 |    16   29   18   12   26   14   30   16   17   20    14
  30E |   17   32   11   12   40    6   23   21   15   38    7 |    39   51   37   43   47   36   49   37   35   48    37
  31  |    7   20   11   13   27    6   26   11   20   20    5 |    14   27   14   14   36   14   30   16   25   19    14
  32  |   11   15    9   10   25    7   21   12   13   27    5 |    18   20   17   17   22   14   21   16   18   29    15
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |    9   18   11   10   35    5   19   12   14   20      |T   19   28   23   22   33   19   26   21   22   22    19
 WRMS |    8   18   11   10   33    5   17   10   13   20      |NE  14   23   19   15   28   14   22   16   18   18    14
 MEDI |    8   17   11    9   31    6   19   10   14   18      |MD  16   25   20   19   30   15   23   16   20   19    15

Table 3.1542.2   GPS week: 1542   Day: 2   MJD: 55040.000                            

        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 |   21  ---  ---   21  ---   21  ---   12   18  ---   10 |    27  ---  ---   30  ---   28  ---   27   24  ---    26
   2  |    7   17    8   10   36    6   11    9   12   27    4 |    25   37   31   26   24   25   28   29   29   29    27
   3  |    8   14    8   10   30    7   12    8   10   21    4 |    16   22   19   19   31   14   20   16   17   30    16
   4  |    9   19   11    7   27    7   10    8   15   33    5 |    30   43   34   33   34   34   34   33   39   33    32
   6  |    7   14    6    7   22   10   12    7    9   16    3 |    17   26   20   18   30   19   25   16   19   27    18
   7  |    6   18   14   10   30    5   21   11   10   18    4 |    17   30   21   22   35   18   27   20   19   20    17
   8  |    6   14   14    6   22    3   10    9    7   19    4 |    15   23   21   21   29   15   17   22   15   22    16
   9  |    7   15   11    9   32    4    9    6   10   19    4 |    18   25   22   19   31   16   20   20   22   14    19
  10  |    6   18   12   10   14    5   10    8   11   11    4 |    19   29   23   20   23   18   22   21   20   19    18
  11  |    9   15    8    6   73    6   15    9    7   16    3 |    32   38   34   34   36   33   34   34   34   28    32
  12E |   10   21    8   13   25    5   16    7    9   19    4 |    18   31   18   24   34   17   23   19   19   23    19
  13  |   12   20    9    9   30    7   19   18   10   13    5 |    28   35   34   32   45   32   36   35   33   30    31
  14E |    8   17   10    9   36    7   17   10    9   14    4 |    24   29   26   26   29   26   30   23   24   25    23
  15E |    8   21   13   22   31    4   19    7    9   15    5 |    13   27   22   33   30   19   22   20   20   20    17
  16E |    8   32   13   13   41    6   25   10   10   15    5 |    20   37   23   23   42   20   30   23   21   26    22
  17  |   10   22    8    9   38    4   18    7   13   19    4 |    19   36   24   21   52   20   30   19   24   24    20
 X18  |    9   20   12  ---   37    5   21   12    9   18    5 |    19   29   19  ---   37   16   24   17   17   18    17
  19  |    7   18    8    7   31    7   21   12    9   20    4 |    19   32   26   18   41   19   28   21   23   21    20
 X20  |    8   24   13  ---   24    6   17   10    9   13    5 |    13   27   14  ---   23   14   19   14   13   15    12
 X21  |    7   14   10  ---   31    4   14    7   12   30    5 |    23   30   32  ---   25   24   25   27   22   28    25
  22  |    6   17    9    8   26    3   19    7    6   13    3 |    14   28   18   19   36   14   26   15   15   17    16
  23E |    8   23    9   15   23    5   26   11   10   13    5 |    19   31   21   19   32   19   31   22   23   24    21
  24  |    7   14    9   13   31    5   11    9   10   19    4 |    25   32   33   30   19   26   24   30   30   25    28
  25  |    6   12    8    7  ---    4    8    8    8   19    3 |    16   23   17   20  ---   15   18   20   18   21    16
  26E |   13   23   10    9   38    3   17   10    7   16    4 |    75   83   77   76   97   78   84   78   77   88    78
  27  |    8   18   11    9   33    3   10    9   11   17    4 |    15   24   23   19   29   15   20   20   19   13    17
  28E |   11   14   11   26   29    4   15   10   11   15    5 |    22   31   27   39   34   23   26   25   29   28    24
  29  |    9   23   13   11   31    5   24    8    8   20    5 |    18   32   21   18   33   18   29   20   21   20    19
  30  |   10   23   11   10   33    7   15   14    9   18    5 |    60   73   61   62   67   60   68   63   62   61    61
  31  |    8   21    9   10   33    6   20    9   10   21    4 |    17   31   22   24   43   19   29   20   18   20    18
  32  |    8   17    8   12   26    6   18    8    7   27    4 |    15   22   17   18   22   16   23   17   18   32    16
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |    8   19   10   11   33    6   17   10   10   19      |T   22   33   26   27   35   23   29   25   25   26    23
 WRMS |    8   19   10   11   30    6   15    9    8   18      |NE  19   29   23   22   31   19   24   21   21   22    19
 MEDI |    8   18   10   10   31    5   16    9   10   18      |MD  19   30   22   22   33   19   26   21   21   24    19

Table 3.1542.3   GPS week: 1542   Day: 3   MJD: 55041.000                            

        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 |   21  ---  ---   18   81   19  ---   15   13  ---   10 |    57  ---  ---   52  792   52  ---   56   47  ---    55
   2  |    6   16   10    9   24    4   11    9    8   29    4 |    20   34   32   28   31   25   24   28   29   28    27
   3  |    7   14   13   10   30    6   10   11    7   22    4 |    10   24   21   14   26   14   20   14   14   26    14
   4  |    7   18    9   10   16    6    9    9    6   36    4 |    27   41   34   35   45   31   32   31   33   35    31
   6  |    6   12   10   10   22    5    9    8    9   17    3 |    12   25   21   15   26   15   21   12   17   21    15
   7  |    7   19   10   11   29    5   18   11    8   18    4 |    15   30   18   17   36   14   25   16   16   17    15
   8  |    6   16    7   10   27    3    8   11    8   19    3 |    14   27   17   18   35   14   18   18   17   18    15
   9  |    7   19   10    7   27    4    9    7    9   19    3 |    20   26   23   16   23   18   22   18   24   11    20
  10  |    7   15   10    7   17    4    9    7    8   15    3 |    15   29   23   18   24   19   21   21   22   25    19
  11  |    8   17   10    6   48    8   15    9    7   15    3 |    37   42   39   36   28   37   39   39   39   33    37
  12E |   11   18    9   22   29    5   18   12   10   23    5 |    23   32   24   35   32   19   23   22   21   23    22
  13E |    6   17    8   11   30    5   17   12   12   11    4 |    35   44   37   41   39   36   41   39   42   40    38
  14E |    5   20    6   15   35    6   15   10   10   13    4 |    16   25   22   22   34   15   23   17   19   20    17
  15E |    6   21   10   12   35    5   18    9   11   19    4 |    11   25   16   18   33   12   19   14   15   21    12
  16E |   10   27   12   18   31    6   24   13   10   16    5 |    14   33   17   20   28   15   27   15   17   19    15
  17  |    9   24    9    8   39    6   20   11   11   17    4 |    17   37   25   18   48   18   30   18   20   19    19
 X18  |    6   22   13  ---   32    6   23   11   10   17    5 |    19   32   20  ---   36   18   28   16   24   17    19
  19  |    7   18    7    9   33    5   17   11    7   18    4 |    14   31   23   18   36   18   27   16   17   18    17
 X20  |    7   25   11  ---   30    7  ---   10    9   14    5 |    11   28   15  ---   25   11  ---    9   11   11     9
 X21  |    7   15   11  ---   23    5   14    8    8   30    5 |    21   29   28  ---   32   21   22   25   24   24    23
  22  |    6   16   10    7   29    6   18    9   11   14    4 |    15   29   20   19   38   18   28   15   21   17    18
  23E |    7   21    9   10   33    5   25   13    8   12    4 |    18   33   21   23   44   19   31   18   21   21    19
  24  |    7   17    7   11   22    5    9   10    8   19    3 |    21   33   28   28   31   24   20   27   31   20    25
  25  |    6   11    6    7  ---    5    8    7    7   21    3 |    12   20   16   18  ---   11   16   15   14   17    13
  26E |   13   25   11   11   32    7   18    7   12   35    5 |   144  151  148  144  167  147  152  145  149  148   146
  27  |    7   17    8   10   39    6   10    8   11   15    3 |    17   24   20   15   30   17   20   16   22   10    17
  28E |   10   15   10   14   29    7   16    9    8   16    4 |    19   28   23   20   29   21   26   21   28   24    21
  29  |    8   25   12   12   27    7   27    7    8   21    5 |    18   39   24   16   28   19   34   20   21   20    20
  30  |    8   24    9    7   31    5   15   13    6   22    4 |    59   69   66   61   62   60   65   61   60   60    62
  31  |    8   27    8    9   33   10   19   11    9   22    5 |    17   36   22   19   38   17   28   17   18   17    17
  32  |    7   16   10    8   31    4   17   11    7   27    4 |    10   24   18   17   23   13   20   13   15   29    14
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |    8   19    9   11   31    6   16   10    9   20      |T   24   36   28   28   63   25   31   26   28   26    26
 WRMS |    7   19    9   11   28    5   14    9    7   19      |NE  17   30   23   20   31   18   24   19   21   20    19
 MEDI |    7   18   10   10   30    5   16   10    8   18      |MD  17   30   22   19   32   18   25   18   21   20    19

Table 3.1542.4   GPS week: 1542   Day: 4   MJD: 55042.000                            

        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  ---  ---   14   66   21  ---   13   14  ---    8 |    50  ---  ---   41  324   47  ---   34   37  ---    40
   2  |    5   14    9    9   33    4   14    7    9   28    4 |    19   26   25   20   21   18   23   19   17   19    18
   3  |    7   17    8    9   26    6   15    7    9   21    4 |    13   24   18   15   22   15   24   14   19   26    15
   4  |    8   15    6    9   20    5    9    7   13   36    4 |    26   33   26   25   28   24   29   23   29   27    24
   6  |    6   14    7   10   28    5   14    5    9   15    3 |    15   27   24   14   27   19   27   14   21   24    18
   7  |    5   19   10   13   31    4   21    9    8   18    4 |    14   31   20   21   39   15   27   19   13   18    16
   8  |    5   13   11   10   18    5   11   11    8   18    3 |    16   22   20   21   29   16   22   24   19   20    18
   9  |    5   15    7   10   22    3    9    5   11   18    3 |    14   20   19   18   23   16   19   16   20    7    15
  10  |    5   15    4   10   23    3   10    6    5   12    3 |    14   22   14   14   22   13   21   15   13   17    13
  11  |    8   18    9    6   59    7   18    6   10   16    4 |    33   36   34   27   30   28   32   33   32   29    30
  12  |    5   19    9   12   27    4   17    5    9   18    4 |    28   29   33   29   37   28   29   29   28   26    28
  13E |    7   20    8   11   28    6   19   13    9   13    4 |    22   36   24   29   31   26   33   26   26   27    24
  14E |    6   17    8   25   30    4   15    8    8   13    4 |    12   21   17   30   29   13   24   13   12   14    12
  15E |    5   19    9   14   35    4   21    8    7   16    4 |    12   22   17   19   31   13   22   14   15   23    12
  16E |   10   27    9   17   33    4   26    9   12   23    5 |    27   38   33   34   38   31   33   30   30   33    28
  17  |    8   24    9    6   35    7   21    8   11   17    4 |    16   35   23   21   44   20   34   18   19   16    18
 X18  |    6   22   10  ---   38    5   21    6   10   16    4 |    14   29   16  ---   38   15   26   14   17   14    15
  19  |    7   18    9   10   32    5   22    6    8   18    4 |    14   29   25   18   37   17   27   14   16   19    16
 X20  |    4  ---  ---  ---  ---   25  ---  ---  ---  ---    0 |     7  ---  ---  ---  ---   25  ---  ---  ---  ---     8
 X21  |    7   12    6  ---   37    4   13    6   11   30    4 |    18   22   21  ---   45   15   21   21   20   18    18
  22  |    6   19    9   11   34    4   20    5    8   13    4 |    14   27   19   13   36   16   30   15   18   15    15
  23E |    7   19   15   13   40    6   24   10    9   14    5 |    17   31   26   23   35   19   33   21   19   24    20
  24  |    6   14    6   12   32    2   10    5    9   21    3 |    19   22   19   25   29   17   17   22   22   16    19
  25  |    4   12    9   10  ---    6    9    4    6   22    3 |    13   20   18   19  ---   14   19   17   15   21    14
  26E |   12   23   10   31   50    5   19    6   15   23    6 |    90   98   91   98   97   92   94   93   90  103    91
  27  |    5   14    8    8   24    6   10    6    9   15    3 |    11   16   14   15   30   13   18   14   15   14    12
  28E |    8   18   13   13   33    4   19    6    9   12    4 |    16   30   26   23   36   18   28   21   21   22    20
  29  |    6   23   10   11   27    4   27    6    6   20    4 |    19   31   19   15   26   18   32   18   18   17    17
  30  |    7   18    6   10   32    3   15   11    9   23    4 |    37   46   41   40   58   38   47   38   40   44    40
  31  |   10   22    7   10   26    5   21   10   13   23    5 |    15   31   21   16   37   18   30   17   23   17    16
  32  |    7   17    8   11   34    7   18    7   11   27    4 |    10   21   18   15   26   11   22   15   16   29    13
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |    7   18    9   13   32    5   18    8   10   20      |T   20   30   24   24   45   22   29   22   23   24    21
 WRMS |    6   18    9   13   35    5   16    7    8   19      |NE  15   26   20   18   31   17   25   18   19   19    16
 MEDI |    6   18    9   10   32    5   18    6    9   18      |MD  16   29   21   21   31   18   27   18   19   20    18

Table 3.1542.5   GPS week: 1542   Day: 5   MJD: 55043.000                            

        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  |   14  ---  ---   11   55    7  ---    7   17  ---    7 |    29  ---  ---   28  332   32  ---   29   28  ---    29
   2  |    5   14    8    9   49    6   11    7   10   29    4 |    14   22   18   19   28   15   19   16   19   15    15
   3  |    9   16   11   10   27    4   10    6    8   23    4 |    15   21   19   17   25   15   21   17   16   31    16
   4  |    7   12    7    7   33    5    8    7    8   37    4 |    18   28   20   21   28   19   25   18   20   25    18
   6  |    8   14    9    8   29    4   10    6    8   18    3 |    12   23   17   14   26   14   22   12   12   24    12
   7  |    6   14   11    9   36    5   16    8    8   20    4 |    15   25   21   19   34   16   25   17   15   20    16
   8  |    6   11   10    9   16    3    8    9    9   18    3 |    13   21   17   16   25   14   17   16   15   17    13
   9  |    5   13    8    8   28    4   10    6   11   16    3 |    14   18   15   12   22   15   17   18   16   10    13
  10  |    7   13    7    3   30    4    8    6    8   16    3 |    14   20   16   14   30   16   19   14   16   15    13
  11  |    8   14   12    9   68    3   17    8   10   19    4 |    34   35   37   36   34   33   36   34   32   31    32
  12  |    7   17   10    9   24    4   18    7   12   17    4 |    18   26   24   21   28   20   22   19   17   18    17
  13E |    6   15   10    9   35    4   18    7    9   13    4 |    15   21   18   15   39   14   20   15   16   15    13
  14E |    6   14   10   14   27    4   16    6   12   14    4 |    14   21   20   20   36   14   22   16   16   17    14
  15E |    6   20   13   18   29    7   21    9    5   23    5 |    12   24   18   24   29   16   20   15   14   32    12
  16  |   10   26   14   11   34    4   19    9    8   18    5 |    20   28   22   20   41   18   27   21   20   19    19
  17  |    6   20   10    8   30    7   18   11    6   17    4 |    13   30   18   15   39   14   28   19   13   14    15
 X18  |    7   18   11  ---   35    5   20    7   10   16    4 |    13   24   16  ---   37   11   26   11   16   11    12
  19  |    7   18    9   10   32    5   18    8   10   20    4 |    14   27   23   14   34   16   28   13   15   14    14
 X20  |    6   21   11  ---   93    6  ---    5   13   17    5 |     8   21   13  ---   49   10  ---   11    8   11     8
 X21  |    6   13   11  ---   27    4   14    8   10   31    5 |    17   23   24  ---   27   17   20   19   19   14    16
  22  |    6   15   10    9   38    4   17    6    9   13    3 |    11   22   15   14   38   12   26   13   14   12    12
  23E |    7   20   12   11   25    4   23    8   11   18    5 |     8   23   17   16   28   11   25   13   13   14    10
  24  |    5   12    8    8   23    4    9    7    9   22    3 |    17   18   18   18   21   15   14   19   20   15    16
  25  |    6   10    9    7  ---    5    8    5   10   24    3 |    11   17   15   15  ---   13   14   15   15   19    12
  26E |   11   19    9    8   64    5   19    8    9   14    4 |   138  146  138  138  152  141  144  138  138  139   139
  27  |    6   13   10   10   36    5   10   10   15   15    4 |    15   19   17   15   28   15   17   19   19   19    14
  28E |   13   14    9   11   27    7   15   10   11   15    4 |    23   28   27   21   35   25   29   25   25   26    22
  29  |    8   24   13    5   25    5   24    9    6   19    5 |    15   32   18   17   30   16   31   15   18   14    16
  30  |    6   23    7    7   22    3   15   11    9   22    4 |    43   54   44   42   48   42   50   44   44   47    43
  31  |    7   21   11    7   22    3   22    7   13   23    4 |    14   28   21   16   36   15   30   14   17   15    15
  32  |    6   13    9    8   35    6   13    6   14   29    4 |    11   20   15   12   25   13   19   17   16   30    12
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |    7   17   10    9   35    5   16    8   10   21      |T   20   28   24   23   46   21   28   22   22   23    20
 WRMS |    7   17   10    9   35    5   14    7    9   22      |NE  14   23   18   16   30   15   22   16   16   17    14
 MEDI |    6   14   10    9   30    4   16    7   10   18      |MD  14   23   18   17   30   15   22   17   16   17    15

Table 3.1542.6   GPS week: 1542   Day: 6   MJD: 55044.000                            

        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  |   30  ---  ---   18   75   18  ---   20   20  ---   13 |    45  ---  ---   37  382   43  ---   33   37  ---    39
   2  |    5   12   12    9   31    5   10    6    8   31    4 |    21   29   28   22   23   23   22   26   24   24    23
   3  |    8   16   10   11   28    5   13    8    8   25    4 |    13   20   18   17   24   16   25   18   16   29    15
   4  |    5   12    9    9   16    4    8    8    8   42    4 |    29   38   32   30   30   30   32   31   31   41    30
   6  |    7   15   10   10   24    3   10    5    6   19    3 |    13   21   20   15   26   16   23   15   18   23    15
   7  |    6   18   10   11   41    4   17    8    6   21    4 |    18   30   19   22   35   17   27   20   18   25    18
   8  |    5   12   10   11   16    3    8    9    9   18    3 |    19   23   18   22   22   18   22   22   17   20    17
   9  |    5   14   10   11   31    3    9    5    7   15    3 |    15   24   17   15   27   16   20   18   21   10    16
  10  |    6   13    9    6   22    5    9    5    8   13    3 |    16   21   18   15   22   16   20   18   14   16    15
  11  |    6   18   10    9   60    6   15   16   11   23    4 |    48   43   47   43   33   45   41   55   50   44    46
  12  |    6   19   12   12   59    3   17    7    8   18    4 |    20   29   23   26   69   19   21   21   19   21    19
  13E |    7   15   12   13   33    4   13    6    7   16    3 |    12   25   15   17   32   13   22   12   15   17    12
  14E |    5   16   13   15   29    4   16    5   11   15    4 |    17   26   19   21   35   18   26   18   22   22    18
  15E |    5   25   10   12   30    5   21   12    9   32    5 |    11   27   13   14   27   10   21   15   13   32    10
  16  |    7   22   12    9   33    4   20   13    8   19    4 |    26   36   33   29   56   27   31   29   28   26    27
  17  |    7   20   12    9   25    5   17   10    6   21    4 |    16   33   17   14   42   16   30   14   15   22    15
 X18  |    7   19   16  ---   35    6   20    8    9   17    5 |    15   29   20  ---   39   17   26   16   20   15    17
  19  |    5   19   11    9   41    4   17   10    6   20    4 |    17   31   22   17   42   19   30   16   19   19    18
 X20  |    6   20   11  ---   30    5   18    7    9   14    4 |     7   19   10  ---   31    9   16    8    8    9     6
 X21  |    7   13   11  ---   27    6   13    9    8   31    4 |    25   27   31  ---   27   27   25   30   29   26    26
  22  |    6   14   13   10   36    5   15    8   10   14    4 |    17   25   21   17   40   18   27   20   22   19    19
  23E |    7   21   17   12   25    3   23    8    9   19    5 |    12   27   18   12   29   13   27   14   17   20    12
  24  |    6   12   11   10   28    4    9   11    7   25    3 |    26   28   29   32   21   28   23   31   29   24    28
  25  |    4   13    7    5  ---    4    7    7    7   23    3 |    15   22   15   19  ---   15   18   18   16   19    14
  26E |    9   21   11   10   61    6   18    7   12   29    5 |   136  139  135  136  153  136  142  136  134  148   137
  27  |    5   13   10   10   43    4   10    7    9   18    3 |    20   22   21   17   41   19   23   21   23   16    19
  28  |    7   16    9   10   24    5   15    8    7   21    4 |    17   21   18   17   28   16   23   16   21   26    16
  29  |    7   25   11    9   27    4   22    9    9   20    5 |    21   37   18   17   33   19   33   21   23   21    21
  30  |    7   22   11   10   20    3   17    9    9   21    4 |    54   59   52   52   57   52   60   54   53   56    53
  31  |    7   21   10   11   23    6   19    9    9   26    4 |    17   31   25   22   38   19   29   19   17   22    18
  32  |    7   13   10    9   23    3   15    7   10   29    4 |    13   17   17   15   26   14   21   15   20   30    14
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |    6   17   11   10   34    4   15    9    8   23      |T   24   31   26   26   49   24   30   25   26   28    24
 WRMS |    6   17   11   10   31    4   13    8    7   21      |NE  19   27   22   20   31   19   25   21   21   22    19
 MEDI |    6   16   11   10   29    4   15    8    8   20      |MD  17   27   19   17   32   18   25   19   20   22    18



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 4.1542   GPS week: 1542   MJD: 55038.0-55044.0

CENT| CLK EPO  |        BRUS       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 2965 |U    8     8    23 |U    8    17    31 |U    8     8    20 |
emr | emr 2863 |    10    12    30 |     9    15    38 |U    9     9    24 |
esa | esa 2866 |     8     8    26 |U    7    16    32 |     8     8    20 |
gfz | gfz 2647 |U   15    15    38 |U   36    77   354 |     9    10    25 |
grg | grg 2838 |     9    11    29 |U    9    20    43 |    10    11    26 |
igr | igr 2878 |     8     9    26 |     8    14    32 |     8     8    21 |
igs | igs 2880 |     8     9    26 |     7    14    32 |     8     8    20 |
jpl | jpl 2807 |     9    11    29 |U    8    15    60 |U    9     8    23 |
mit | mit 2962 |U   13    14    36 |U    7    13    33 |U   11    11    26 |



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 5.1542.0   GPS week: 1542   Day: 0   MJD: 55038.0

CENT| CLK EPO  |        BRUS       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 2949 |     8    11    15 |    10    11    34 |     8     8    19 |
emr | emr 2871 |    10    17    20 |     9     9    38 |     8     9    26 |
esa | esa 2879 |     8    11    17 |     8    15    33 |     8     8    22 |
gfz | gfz 2567 |    11    20    33 |   108   257  1311 |     8    10    27 |
grg | grg 2880 |     9    14    20 |    10    13    34 |  ----  ----  ---- |
igr | igr 2822 |     8    10    16 |    10    13    31 |     7     8    23 |
igs | igs 2841 |     8    11    15 |     8     9    30 |     8     8    21 |
jpl | jpl 2778 |     9    14    20 |     8     9    38 |     7     7    22 |
mit | mit 2976 |     7     8    15 |     8     9    30 |     9     9    21 |

Table 5.1542.1   GPS week: 1542   Day: 1   MJD: 55039.0

CENT| CLK EPO  |        BRUS       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 2972 |     9    10    27 |     9    35    46 |     7     6    20 |
emr | emr 2880 |     9    11    30 |    12    15    69 |     8     8    25 |
esa | esa 2880 |     9     9    30 |     9    19    56 |     7     6    22 |
gfz | gfz 2653 |    15    16    39 |    22    50   248 |     9     7    29 |
grg | grg 2784 |    10    12    34 |     8    17    53 |    10     9    27 |
igr | igr 2880 |     9     9    33 |    10    19    59 |     6     6    21 |
igs | igs 2880 |     9    10    29 |     9    20    58 |     7     6    22 |
jpl | jpl 2783 |    11    11    30 |    13    31   176 |     9     7    25 |
mit | mit 2976 |     8    10    29 |     8    14    49 |     7     6    21 |

Table 5.1542.2   GPS week: 1542   Day: 2   MJD: 55040.0

CENT| CLK EPO  |        BRUS       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 2957 |     6     6    23 |     8    19    29 |     7     7    21 |
emr | emr 2880 |     8    10    30 |     7    21    30 |    10     8    28 |
esa | esa 2880 |     8     6    26 |     6    21    27 |     7     5    21 |
gfz | gfz 2657 |    13    15    43 |    19    33    98 |     9     9    25 |
grg | grg 2784 |     9    10    36 |    11    26    40 |     9     6    25 |
igr | igr 2880 |     7     6    24 |     8    19    26 |     8     6    21 |
igs | igs 2880 |     8     7    26 |     7    18    27 |     7     6    21 |
jpl | jpl 2879 |     8     9    27 |     6    19    33 |     8     6    26 |
mit | mit 2976 |    20    14    50 |     7    17    30 |    24    17    54 |

Table 5.1542.3   GPS week: 1542   Day: 3   MJD: 55041.0

CENT| CLK EPO  |        BRUS       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 2965 |     9    10    28 |     8    16    30 |    10    12    22 |
emr | emr 2880 |    10    13    35 |     9    24    32 |    10    14    21 |
esa | esa 2879 |     9    10    30 |     8    22    30 |    10    11    21 |
gfz | gfz 2667 |    31    15    48 |    16    28    86 |    11    15    25 |
grg | grg 2880 |    10    10    32 |    12    31    47 |    11    15    27 |
igr | igr 2905 |     9    10    29 |     8    15    27 |    10    11    20 |
igs | igs 2955 |     9    10    31 |     8    17    26 |    10    12    20 |
jpl | jpl 2784 |    10    12    32 |     8    11    34 |    10    11    22 |
mit | mit 2976 |    16    11    51 |     8    17    37 |    11    13    25 |

Table 5.1542.4   GPS week: 1542   Day: 4   MJD: 55042.0

CENT| CLK EPO  |        BRUS       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 2975 |     9    10    23 |  ----  ----  ---- |     8     8    18 |
emr | emr 2780 |    11    16    37 |  ----  ----  ---- |    11     8    19 |
esa | esa 2784 |     9    10    29 |  ----  ----  ---- |     8     9    18 |
gfz | gfz 2657 |    13    15    35 |  ----  ----  ---- |     9    14    21 |
grg | grg 2784 |    11    18    29 |  ----  ----  ---- |    10    11    23 |
igr | igr 2842 |    10    13    32 |  ----  ----  ---- |     9     8    17 |
igs | igs 2780 |    10    13    32 |  ----  ----  ---- |     9     7    17 |
jpl | jpl 2780 |    11    16    37 |  ----  ----  ---- |     9     8    18 |
mit | mit 2880 |    12    17    41 |  ----  ----  ---- |    10     8    16 |

Table 5.1542.5   GPS week: 1542   Day: 5   MJD: 55043.0

CENT| CLK EPO  |        BRUS       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 2971 |     8     4    23 |  ----  ----  ---- |     8     8    15 |
emr | emr 2876 |    10     9    24 |  ----  ----  ---- |    10     7    19 |
esa | esa 2880 |     9     5    24 |  ----  ----  ---- |     7     8    13 |
gfz | gfz 2663 |    11    10    25 |  ----  ----  ---- |     8     7    20 |
grg | grg 2880 |    11     6    22 |  ----  ----  ---- |    11    14    26 |
igr | igr 2899 |     8     5    21 |  ----  ----  ---- |     7     6    12 |
igs | igs 2878 |     8     4    23 |  ----  ----  ---- |     7     7    13 |
jpl | jpl 2774 |    10     9    26 |  ----  ----  ---- |     9     8    19 |
mit | mit 2976 |    18    30    40 |  ----  ----  ---- |     8     8    15 |

Table 5.1542.6   GPS week: 1542   Day: 6   MJD: 55044.0

CENT| CLK EPO  |        BRUS       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 2972 |     8     6    25 |     5     5    18 |     7    10    24 |
emr | emr 2876 |     9    11    30 |     7     8    19 |    10    11    33 |
esa | esa 2880 |     8     6    26 |     5     6    17 |     8    10    28 |
gfz | gfz 2669 |    12    12    42 |    13    16    27 |     8    11    28 |
grg | grg 2880 |     7     9    33 |     8    13    41 |     9    13    28 |
igr | igr 2918 |     7     6    27 |     6     5    17 |     8    12    29 |
igs | igs 2947 |     8     7    26 |     5     6    17 |     9    12    29 |
jpl | jpl 2874 |     8     8    31 |     6     7    20 |     8    11    29 |
mit | mit 2976 |     7     5    29 |     6     6    19 |     9    13    30 |


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 6.1542   GPS week: 1542   MJD: 55038.500-55044.500

                                                         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     -17     -23     103      7 |      -5     14
            |      24      18      80      88      7 |       1
emr   uuxuu |      -7     -54     385     -61     -3 |      21     34
            |      17      16     128      44      6 |       4
esa   uuuuu |     -45     -34      69    -227     -2 |      22     32
            |      25      17     108      71     17 |       1
gfz   uuuuu |      22       4      70     -21     -6 |      19     25
            |       9      15      32      91      8 |       2
grg   xxxxx |      -7      -9     -81     121     11 |       2     22
            |      31      47     112      99     15 |       6
igr   xxxxx |      16       5      71      94     -5 |       5     15
            |      23      32      28     105      6 |       2
irf   xxxxx |      -9      -7       6      -7     -4 |       2     20
            |      13      10      19      47     11 |       2
jpl   uuuuu |     -10     -14     103     189      5 |       0     18
            |      32      30      84      99      6 |       2
mit   uuuuu |       1     -16    -106     -87     -5 |       7     24
            |      19      14      33     141     12 |       2
ngs   uuuuu |      15      57     -71     245      1 |      11     17
            |      47      46      78     178     11 |       3
sio   uuuuu |      38      93     -35      87     -9 |      14     28
            |      16      25      75      81     13 |       3


Table 7.1542.0   GPS week: 1542   Day: 0   MJD: 55038.500

                                                         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 |     -15     -42     -25     209     -1 |      -6     15
emr   uuxuu |     -17     -48     200    -107    -11 |      14     35
esa   uuuuu |     -30     -32     -35    -315     26 |      21     30
gfz   uuuuu |      34      -2      86     131      5 |      18     23
grg   xxxxx |     -26     -69      -3     204     36 |      -8     21
igr   xxxxx |       5     -24      70     226      3 |       5     12
irf   xxxxx |       2     -13     -27     -52    -22 |       4     20
jpl   uuuuu |     -35     -18     223     234     -2 |      -1     18
mit   uuuuu |       2     -29     -60    -252    -23 |       7     25
ngs   uuuuu |      -2     120    -213     484      8 |       7     13
sio   uuuuu |      54      66     -65      -2    -30 |      14     30

Table 7.1542.1   GPS week: 1542   Day: 1   MJD: 55039.500

                                                         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 |     -18     -30      78      33     -3 |      -6     14
emr   uuxuu |     -12     -67     234    -107     -8 |      17     36
esa   uuuuu |     -64     -59      51    -249     13 |      22     32
gfz   uuuuu |      11     -18     100     -26    -10 |      20     26
grg   xxxxx |      35      16     100     206     20 |      -3     26
igr   xxxxx |      31      18      51      36      1 |       6     14
irf   xxxxx |     -12       1      -7     -49    -16 |       3     20
jpl   uuuuu |       3     -33     186     336      0 |       1     19
mit   uuuuu |      -6      -3    -110    -221    -20 |       7     25
ngs   uuuuu |      52     111    -104     497     17 |       9     16
sio   uuuuu |      39     114    -154      -3    -23 |      14     30

Table 7.1542.2   GPS week: 1542   Day: 2   MJD: 55040.500

                                                         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 |     -54       8      84     243     10 |      -5     13
emr   uuxuu |     -20     -70     508     -32     -4 |      21     34
esa   uuuuu |     -79     -37      56    -162     -7 |      25     34
gfz   uuuuu |       9     -12      99     -82     -8 |      21     26
grg   xxxxx |       3       8    -124      41      5 |       1     25
igr   xxxxx |       2     -40      74      49     -2 |       7     14
irf   xxxxx |     -31      -9       9     -29     -3 |       4     19
jpl   uuuuu |      -5      -8      53     267      2 |       3     17
mit   uuuuu |     -33     -17    -106    -133     -1 |       8     24
ngs   uuuuu |     104      60     -38     202      8 |      13     17
sio   uuuuu |      14      96     -30      69     -8 |      16     29

Table 7.1542.3   GPS week: 1542   Day: 3   MJD: 55041.500

                                                         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 |      15     -31    -134      90     14 |      -6     14
emr   uuxuu |      24     -65     544      -4      0 |      23     33
esa   uuuuu |     -21      -4     240    -148    -22 |      22     33
gfz   uuuuu |      30      18      57      37      5 |      20     26
grg   xxxxx |      33     -78    -220     213    -14 |       3     22
igr   xxxxx |      53     -21      44     246     -7 |       6     15
irf   xxxxx |     -15      11       5     -34     -2 |       3     20
jpl   uuuuu |     -24     -54      31     125      2 |       1     18
mit   uuuuu |      -6       7    -169    -128      0 |       8     24
ngs   uuuuu |      -3      -8     -87     137      5 |      13     17
sio   uuuuu |      29     134     -97      38     -7 |      16     29

Table 7.1542.4   GPS week: 1542   Day: 4   MJD: 55042.500

                                                         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       2     -21      79     12 |      -4     15
emr   uuxuu |     -26     -58     411     -92      0 |      26     34
esa   uuuuu |     -38     -38     130    -193    -11 |      21     33
gfz   uuuuu |      22       6      73      23     -6 |      21     27
grg   xxxxx |     -27      49    -199     172      7 |       6     21
igr   xxxxx |       3      38     105     106     -8 |       5     15
irf   xxxxx |      -1     -12      32       1      3 |       3     20
jpl   uuuuu |      18      39       4     174     11 |       1     18
mit   uuuuu |      20     -18    -113     -48      5 |       9     25
ngs   uuuuu |     -18      32     -58     157     -9 |      14     19
sio   uuuuu |      46      98      48     161      1 |      16     28

Table 7.1542.5   GPS week: 1542   Day: 5   MJD: 55043.500

                                                         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     -19     -67      59     14 |      -3     15
emr   uuxuu |       2     -44     383     -71      7 |      25     34
esa   uuuuu |     -14     -43     -83    -197    -13 |      22     33
gfz   uuuuu |      27      20      65    -107     -9 |      19     26
grg   xxxxx |     -47      17     -46     -22     17 |       6     20
igr   xxxxx |      31      27     111     -27     -7 |       4     16
irf   xxxxx |       7     -14      10      45      6 |       2     20
jpl   uuuuu |     -59     -27     149      35     12 |      -1     18
mit   uuuuu |      22     -19     -95      23      7 |       8     25
ngs   uuuuu |     -29      55      42     214    -12 |      13     19
sio   uuuuu |      59      76       5     166      5 |      13     27

Table 7.1542.6   GPS week: 1542   Day: 6   MJD: 55044.500

                                                         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 |      10     -11     -74      10      5 |      -5     15
emr   uuxuu |      -3     -24     414     -14     -2 |      22     31
esa   uuuuu |     -69     -24     121    -323      1 |      21     33
gfz   uuuuu |      18      13       9    -122    -18 |      15     25
grg   xxxxx |     -17      -6     -79      37      9 |       7     20
igr   xxxxx |     -13      36      44      23    -15 |       1     17
irf   xxxxx |     -10     -16      19      69      4 |      -2     19
jpl   uuuuu |      32       3      72     154     12 |      -4     16
mit   uuuuu |       5     -31     -89     152      0 |       4     22
ngs   uuuuu |       4      29     -41      26     -7 |      10     20
sio   uuuuu |      28      69      46     181      2 |       9     24



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