[IGSREPORT-17499] Wk 1534 IGS Final Orbits

Jim Ray IGS.ACC at noaa.gov
Thu Jun 18 04:45:57 PDT 2009


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IGS Electronic Report   18 Jun 04:46:19 PDT 2009      Message Number 17499
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Author:  AC Coordinator / NOAA NGS

sum-file Version 2.0
Final IGS Orbit Combination - Week 1534   (May 31, 2009 - Jun 06, 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:

igs1534[0-6].sp3  IGS GPS ephemeris files in SP3 format.
igs1534[0-6].clk  IGS GPS satellite and station clocks in SP3 format.
igs1534[0-6].cls  IGS GPS clock combination summary report.
igs15347.erp      Earth Rotation Parameters (ERP) and their rates as well as
                  Universal Time (UT1-UTC) and Length Of Day (LOD) associated 
                  with IGS ephemerides.
igs15347.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   | 8 9 10 27 8 9 10 27
                0  |  ESA   | 8 9 10
                0  |  GFZ   | 32 CHUR OHI2
                0  |  GRG   | NLIB
                0  |  JPL   | 27 32
                0  |  MIT   | 5 32 5 32
                1  |  ALL   | 1 1
                1  |  COD   | 8 9 10 27 8 9 10 27 MATE
                1  |  EMR   | 21 21 MIZU WTZR
                1  |  ESA   | 8 9 10 27 32 MIZU
                1  |  GFZ   | 32 AMC2 ANKR CHUR EIL1 PRDS TSKB UNSA
                1  |  GRG   | NLIB
                1  |  JPL   | 32
                1  |  MIT   | 32 32
                2  |  COD   | 8 9 8 9 10 MIZU
                2  |  EMR   | 27 27 WTZR
                2  |  ESA   | 8 9 10 SEY1
                2  |  GRG   | NLIB
                2  |  JPL   | 27 32 HARB
                2  |  MIT   | 5 32 5 32 HOB2
                2  |  NGS   | 1
                3  |  COD   | 8 10 8 10 YAR2
                3  |  EMR   | 5 9 5 9
                3  |  ESA   | 8 10 DAV1 MIZU UNSA
                3  |  GFZ   | 20 32 IRKT
                3  |  GRG   | PIE1
                3  |  JPL   | 9 32
                3  |  MIT   | 29 32 13 29 32 DAV1
                3  |  NGS   | 1
                4  |  COD   | 8 8 CHUR
                4  |  EMR   | MIZU WTZR
                4  |  ESA   | 8 10 32 CHUR MAS1 MIZU
                4  |  GFZ   | 18 31 CHUR GUAT IRKT UNSA
                4  |  GRG   | NLIB
                4  |  MIT   | 5 10 32 5 10 19 32
                4  |  NGS   | 1
                5  |  ALL   | 5 1 5
                5  |  COD   | 8 10 8 10
                5  |  EMR   | 32 32 MIZU
                5  |  ESA   | 8 10 32 MIZU NRC1 UNSA
                5  |  GFZ   | BAN2 CHUR FAA1
                5  |  GRG   | NLIB
                5  |  JPL   | HARB
                5  |  MIT   | SYOG FLIN SYOG
                6  |  ALL   | 1 1
                6  |  COD   | 8 10 8 10
                6  |  EMR   | 32 32 MIZU WTZR
                6  |  ESA   | 8 10 MIZU UNSA
                6  |  GFZ   | BRAZ IRKT
                6  |  GRG   | KHAJ NLIB
                6  |  JPL   | MDVJ
                6  |  MIT   | 5 19 5 19 BRAZ

    
 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   | ~21:15 | ~ -0.75 ns

 6. Velocity changes were estimated to alleviate the effects of modeling
    problems, experienced by all centres,in the Long Arc (LA) process.
    
             Velocity changes per day and affected satellites:
    
               Day |  0 |  1 |  2 |  3 |  4 |  5 |  6 |
           --------+----+----+----+----+----+----+----+
           PRN G09 |    |    |    |  1 |    |    |    |

 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  |     .2     .4     .1     -12    -17      0     .12
       EMR  |    6.6  -18.5   -4.7      -9     35     13     .19
       ESA  |     .7   -4.5   19.0     -20     33     80     .15
       GFZ  |     .1     .3    1.2      10     -4      4    -.08
       GRG  |    8.1   -1.1    -.1      -4    -18     13     .12
       JPL  |    3.2   -1.9    -.6       6     -2    -10     .25
       MIT  |    3.1   -8.8   11.9     -19     33    -10     .08
       NGS  |   10.0   -9.2    7.6    -103   -107     30     .04
       SIO  |   -2.1   -4.3   -4.0     -63     16    -15     .45


 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 1.1534.a). It also displays the computed satellite
position sigmas for the combined orbits (table 1.1534.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 2.1534.[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 3.1534.[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 5.1534.0-6).

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 1534 summary.                       (May 31, 2009 - Jun 06, 2009)

Table 1.1534.a   GPS week: 1534   MJD: 54982.000-54988.000

         Mean and standard deviations of transformation parameters to the 
         combined IGS orbit.
         WRMS - orbit RMS weighted by the SP3 header accuracy codes.
         STA  - Mean number of stations in the daily solutions.
   
CENT STA|   DX    DY    DZ    RX    RY    RZ   SCL  RMS  WRMS|    TOFT   TDRFT   SDEV    RMS
        |  [mm]  [mm]  [mm] [uas] [uas] [uas] [ppb] [mm] [mm]|    [ps]  [ps/d]   [ps]   [ps]
--------+----------------------------------------------------+------------------------------
cod  231|    0     0     0   -24     0   -25  -.14    8    8 |    -315    -401     16     80
        |    0     0     0    13    13    25   .02           |     198     339
emr   79|    0     1    -1   -22   -80   -44   .30   18   18 |    2780    -555     17     94
        |    1     1     1    35     6    19   .03           |    1391    1332
esa  126|   -1     1     0   -43   -71    46   .39   10    9 |     234   -1789     18    106
        |    1     0     1    14    21    17   .03           |     656     831
gfz  187|    0     0     1   -80   -16   201  -.01   11   11 | -428539   34358     24    144
        |    0     1     0    14    16    86   .08           |  534551   43481
grg  104|    2     0   -10   -73    35   -31  1.00   37   35 |      28    -167     90    222
        |    1     1     1    32    18    54   .05           |     182     446
igr  n/a|    0     0     0   -46   -10   -71   .07    5    5 |   17889    -443     20     69
        |    0     0     1    14     8    15   .05           |    1229    1308
jpl  127|    1     1    -4   -64   -27    -9   .46   18   16 |     907    -444     17     98
        |    1     0     1    11    14    31   .05           |    1083    1203
mit  260|    0    -1     1     4   -69   -58  -.28   10    9 |  -14849    -505     20    153
        |    0     0     1    33    23    18   .02           |     667     829
ngs  215|    0     0     0   144   203   -71  -.31    9    7 | -241037  368340   1975   3783
        |    1     0     0    23    47    19   .03           |  422051  507958
sio  255|   -3     0     1    97   -35   -64   .17   22   20 |     ---     ---    ---    ---
        |    1     0     2    39    36    13   .03           |     ---     ---


Table 1.1534.b   GPS week : 1534   MJD: 54982.000-54988.000   

         Satellite position sigmas for the combined orbits
         (coded in the IGS SP3 orbit files).
         "E" flags eclipsing satellites.
         Units: mm.

              Day of GPS week
 PRN  |    0    1    2    3    4    5    6 |  Remarks
------+------------------------------------+------------------------------------------
   1  |   16   22   18   15   20   18   19 |
   2  |    5    5    5    5    5    5    4 |
   3  |    4    4    4    3    3    4    4 |
   4  |    3    4    4    3    3    3    4 |
   5  |   12    0    9    9   11   12    9 |
   6  |    4    4    4    3    4    4    4 |
   7  |    4    5    5    5    6    5    5 |
   8  |    6    5    5    5    5    5    6 |
   9  |    5    5    6    7    6    4    4 |
  10  |    5    5    5    5    5    4    5 |
  11  |    4    5    4    4    4    4    5 |
  12  |    5    5    6    5    5    5    5 |
  13  |    5    5    5    6    5    5    5 |
  14  |    5    5    5    5    4    5    5 |
  15  |    6    7    6    6    5    4    5 |
  16  |    5    5    5    5    5    5    5 |
  17  |    5    4    5    4    4    4    5 |
  18  |    5    5    5    5    5    5    5 |
  19  |    5    5    6    5    5    5    5 |
  20  |    5    5    5    5    4    4    4 |
  21  |    4    5    5    5    4    4    5 |
  22  |    4    5    5    4    4    5    5 |
  23  |    5    6    6    5    5    6    5 |
  24  |    3    4    3    3    3    3    3 |
  25  |    7    7    5    5    5    4    5 |
  26  |    3    4    4    4    3    3    4 |
  27  |    5    5    6    6    5    4    4 |
  28  |    5    5    6    5    5    5    5 |
  29  |    5    5    5    5    5    5    5 |
  30  |    4    4    4    3    3    4    4 |
  31  |    6    6    5    5    4    4    4 |
  32  |    6    6    6    7    5    5    5 |



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 2.1534.0   GPS week: 1534   Day: 0   MJD: 54982.000                            

CENT STA|   DX    DY    DZ    RX    RY    RZ   SCL  RMS  WRMS|    TOFT   TDRFT   SDEV    RMS
        |  [mm]  [mm]  [mm] [uas] [uas] [uas] [ppb] [mm] [mm]|    [ps]  [ps/d]   [ps]   [ps]
--------+----------------------------------------------------+------------------------------
cod  231|    1     0     0   -25   -25   -66  -.16    9    8 |     -89   -1060     17     77
        |                     -3    28                       |
emr   79|   -3     2     3   -50   -88   -13   .30   19   19 |    3730    1690     17    100
        |                     23     0                       |
esa  126|    0     0     2   -33   -79    31   .38    9    8 |     990   -2475     19    115
        |                     48    42                       |
gfz  187|   -1     0     0   -89     5   236   .01   11   11 |    -333     506     26    116
        |                     47    -7                       |
grg  104|    4    -1    -9   -81    20    15   .95   37   32 |    -308     629     88    214
        |                     36    53                       |
igr  n/a|    0     0     0   -35    -8   -68   .11    6    5 |   18805    1451     20     71
        |                     36   -13                       |
jpl  127|    1     2    -3   -76   -15   -37   .40   19   17 |    1692    1402     18    106
        |                     31   -18                       |
mit  260|    0    -2     0   -35   -49   -65  -.27   11   11 |  -15229      80     21    176
        |                     -2   -21                       |
ngs  215|    1    -1    -1   177   155   -51  -.34    8    6 |  316334 -163696   2286   4354
        |                     29    22                       |
sio  255|   -3     1    -1    54   -12   -66   .13   23   20 |     ---     ---    ---    ---
        |                    -72   -22                       |

Table 2.1534.1   GPS week: 1534   Day: 1   MJD: 54983.000                            

CENT STA|   DX    DY    DZ    RX    RY    RZ   SCL  RMS  WRMS|    TOFT   TDRFT   SDEV    RMS
        |  [mm]  [mm]  [mm] [uas] [uas] [uas] [ppb] [mm] [mm]|    [ps]  [ps/d]   [ps]   [ps]
--------+----------------------------------------------------+------------------------------
cod  231|    0     0     1   -49    -3   -17  -.13    9    8 |    -568    -299     17     68
        |                     76    30                       |
emr   79|    0     3     0   -72   -69   -43   .31   20   20 |    4872   -1447     15     93
        |                     27   -33                       |
esa  126|    1     0     1   -50   -69    26   .36   10   10 |    -260   -2293     18    106
        |                     60    31                       |
gfz  187|    0     1     0   -88   -28   318   .00   14   14 |      19    -307     29    116
        |                     91    21                       |
grg  104|    3     3   -10  -105    31    -3  1.02   38   34 |     189    -576     96    216
        |                    130     1                       |
igr  n/a|    0     0     0   -68    -5   -69   .10    7    6 |   19623   -1550     20     59
        |                     21   -61                       |
jpl  127|    3     0    -4   -81   -14   -45   .46   19   17 |    2358   -1533     16     89
        |                     20    27                       |
mit  260|    0    -2     0    71   -66   -69  -.27   11   10 |  -14592    -790     20    131
        |                     -5   -16                       |
ngs  215|    0     0     0   109   162   -63  -.31    9    9 |   11517    3285   1936   3894
        |                     27   -10                       |
sio  255|   -5     0    -2   170    -6   -55   .18   23   22 |     ---     ---    ---    ---
        |                    -91   -25                       |

Table 2.1534.2   GPS week: 1534   Day: 2   MJD: 54984.000                            

CENT STA|   DX    DY    DZ    RX    RY    RZ   SCL  RMS  WRMS|    TOFT   TDRFT   SDEV    RMS
        |  [mm]  [mm]  [mm] [uas] [uas] [uas] [ppb] [mm] [mm]|    [ps]  [ps/d]   [ps]   [ps]
--------+----------------------------------------------------+------------------------------
cod  231|    0    -1     0   -17    -5   -45  -.16    9    9 |    -153    -519     18     79
        |                    -17   -19                       |
emr   79|    2     0    -2   -32   -73   -62   .30   19   19 |    3985   -2475     17     88
        |                     -1   -48                       |
esa  126|   -1     2     2   -32   -52    61   .41   11   11 |     916   -3033     18     95
        |                     35   -12                       |
gfz  187|   -1     0     0  -101    -1   298   .10   12   12 | -999999   81807     23     93
        |                     48   -14                       |
grg  104|    2     1   -10   -17    58   -75  1.03   40   38 |     173    -135     83    221
        |                     41    -4                       |
igr  n/a|    0     0     1   -36   -18  -102   .09    5    4 |   18546   -2273     19     68
        |                     -1   -13                       |
jpl  127|    3     2    -5   -55   -19   -37   .43   18   16 |    1243   -2077     17     87
        |                     21     9                       |
mit  260|    1    -1     0    -7  -105   -84  -.31   10   10 |  -14791    -118     19    158
        |                      0     3                       |
ngs  215|   -1     0     0   160   195   -82  -.34    9    8 |    5769   10044   1880   4190
        |                     66    66                       |
sio  255|   -2     0     1    63   -42   -83   .17   21   20 |     ---     ---    ---    ---
        |                    -70   -18                       |

Table 2.1534.3   GPS week: 1534   Day: 3   MJD: 54985.000                            

CENT STA|   DX    DY    DZ    RX    RY    RZ   SCL  RMS  WRMS|    TOFT   TDRFT   SDEV    RMS
        |  [mm]  [mm]  [mm] [uas] [uas] [uas] [ppb] [mm] [mm]|    [ps]  [ps/d]   [ps]   [ps]
--------+----------------------------------------------------+------------------------------
cod  231|    0     0     0   -23     1   -25  -.13    8    7 |    -494    -296     16     98
        |                      6    -1                       |
emr   79|    0     2     0   -19   -81   -67   .31   19   18 |    1570   -1241     19    108
        |                    -13   -15                       |
esa  126|   -1     0    -2   -24   -49    47   .43   10   10 |     454   -1140     18    105
        |                     10    41                       |
gfz  187|    0     0     1   -84   -40   183  -.03   11   11 | -999999   80071     24    281
        |                     61    27                       |
grg  104|    5     0   -12  -107    30   -56   .94   38   37 |     178    -591     99    239
        |                     86    52                       |
igr  n/a|    0    -1     0   -40   -25   -49   .01    6    5 |   16490   -1192     21     82
        |                     16    -3                       |
jpl  127|    1     1    -3   -56   -22   -14   .49   18   16 |    -530   -1070     16    102
        |                    -16    21                       |
mit  260|    0    -1     2     0   -34   -57  -.28   10    9 |  -14916   -2056     20    174
        |                     15   -13                       |
ngs  215|    0     0     0   128   155   -66  -.33   10    8 |   10171    6134   2289   4105
        |                     62     6                       |
sio  255|   -1     1     3    94    16   -78   .20   22   20 |     ---     ---    ---    ---
        |                    -76   -40                       |

Table 2.1534.4   GPS week: 1534   Day: 4   MJD: 54986.000                            

CENT STA|   DX    DY    DZ    RX    RY    RZ   SCL  RMS  WRMS|    TOFT   TDRFT   SDEV    RMS
        |  [mm]  [mm]  [mm] [uas] [uas] [uas] [ppb] [mm] [mm]|    [ps]  [ps/d]   [ps]   [ps]
--------+----------------------------------------------------+------------------------------
cod  231|    1     0     0   -16    16   -25  -.14    8    7 |     -95    -261     16     89
        |                     17   -31                       |
emr   79|    0    -1    -2   -32   -81   -24   .29   18   18 |    1416     -98     18     91
        |                    -17   -31                       |
esa  126|   -4     1     1   -67  -103    67   .41   10   10 |     574   -1630     18     98
        |                     42    80                       |
gfz  187|    0    -1     0   -68    -4    89   .06   11   11 |      56    -285     22    107
        |                     54   -12                       |
grg  104|    1     0   -10   -65    63   -74   .97   36   36 |      47    -422     95    218
        |                     70   -55                       |
igr  n/a|    0     1    -2   -45   -10   -69   .11    5    5 |   16316    -261     21     71
        |                      3   -25                       |
jpl  127|    0     1    -3   -57   -30    16   .47   17   15 |    -420    -307     17    112
        |                     -9    19                       |
mit  260|    0     0     2     5   -89   -25  -.32    8    7 |  -15906     446     18    149
        |                     12    -3                       |
ngs  215|    1     1    -1   134   255   -47  -.27   10    7 | -682022  909389   1868   3093
        |                     51   -84                       |
sio  255|   -2     0     3   119   -50   -44   .18   20   19 |     ---     ---    ---    ---
        |                    -93   -18                       |

Table 2.1534.5   GPS week: 1534   Day: 5   MJD: 54987.000                            

CENT STA|   DX    DY    DZ    RX    RY    RZ   SCL  RMS  WRMS|    TOFT   TDRFT   SDEV    RMS
        |  [mm]  [mm]  [mm] [uas] [uas] [uas] [ppb] [mm] [mm]|    [ps]  [ps/d]   [ps]   [ps]
--------+----------------------------------------------------+------------------------------
cod  231|    1     0     0    -8     5   -14  -.12    8    7 |    -406    -423     14     75
        |                    -13   -24                       |
emr   79|    1     0    -1    24   -83   -53   .34   17   17 |    1660    -419     16     94
        |                    -67    -7                       |
esa  126|   -2     1    -1   -50   -92    63   .39    9    9 |    -599   -1224     21    121
        |                     69    74                       |
gfz  187|    0     0     1   -69   -21   128  -.10    9    9 |     481   -1904     25    200
        |                     14   -17                       |
grg  104|    0    -1   -12   -49    23   -83  1.08   36   33 |      26    -277     93    231
        |                      6   -33                       |
igr  n/a|    0     0    -1   -33    -3   -71   .07    4    4 |   17329      32     21     74
        |                      7   -13                       |
jpl  127|    1     0    -5   -53   -33    25   .56   18   16 |     578      25     20    106
        |                    -33    24                       |
mit  260|    0    -1     2   -17   -73   -49  -.28    9    8 |  -14819    -204     19    176
        |                     19   -17                       |
ngs  215|    1     0     0   164   262   -87  -.29    9    7 | -678338  909818   1954   3305
        |                     -4  -104                       |
sio  255|   -4     0     4    75   -81   -61   .19   20   20 |     ---     ---    ---    ---
        |                    -73    21                       |

Table 2.1534.6   GPS week: 1534   Day: 6   MJD: 54988.000                            

CENT STA|   DX    DY    DZ    RX    RY    RZ   SCL  RMS  WRMS|    TOFT   TDRFT   SDEV    RMS
        |  [mm]  [mm]  [mm] [uas] [uas] [uas] [ppb] [mm] [mm]|    [ps]  [ps/d]   [ps]   [ps]
--------+----------------------------------------------------+------------------------------
cod  231|    0    -1     0   -33     9    14  -.17    8    7 |    -401      47     17     75
        |                     15   -24                       |
emr   79|    1     1    -2    23   -86   -47   .25   17   17 |    2230     100     18     86
        |                    -65   -20                       |
esa  126|   -1     1    -1   -49   -53    27   .36    9    8 |    -437    -734     19    104
        |                     62    52                       |
gfz  187|    0     1     1   -60   -22   157  -.09   11   11 | -999999   80620     25    100
        |                     44   -11                       |
grg  104|    2     0    -9   -89    18    56   .99   36   34 |    -107     203     82    218
        |                     83    10                       |
igr  n/a|    0     0    -1   -64    -5   -67   .01    5    5 |   18114     691     20     62
        |                     59   -18                       |
jpl  127|    1     1    -5   -69   -55    24   .44   18   16 |    1434     452     17     89
        |                    -10    54                       |
mit  260|    1    -2     2    13   -68   -56  -.27   10    9 |  -13694    -899     25    112
        |                     13   -26                       |
ngs  215|    0     0     0   140   238  -101  -.29   10    7 | -670691  903410   1613   3545
        |                     11   -52                       |
sio  255|   -4     1     3   104   -72   -62   .13   22   22 |     ---     ---    ---    ---
        |                    -76    17                       |

       
       
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 3.1534.0   GPS week: 1534   Day: 0   MJD: 54982.000                            

        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  |   25  ---  ---  ---  ---   33  ---   14   24  ---   15 |    35  ---  ---  ---  ---   38  ---   30   32  ---    30
   2  |    9   21    9   10   33    7   23   13    9   21    5 |    20   27   16   20   28   16   25   17   23   23    17
   3  |    5    8    9   11   21    7    8   10    7   17    3 |    25   28   23   29   24   24   22   32   29   24    26
   4  |    8   15    6    7   25    4   11   11    5   14    3 |    20   32   23   23   27   22   25   26   23   28    22
  X5  |   26   18  ---  ---  ---   31  ---   17   19  ---   12 |    25   19  ---  ---  ---  160  ---   15   14  ---    17
   6  |    8    9    7    9   29    6   10   10    7   23    3 |    37   45   42   46   38   41   41   42   35   45    40
   7E |   11   15    7   13   53    4   17    8    8   17    4 |    21   27   27   22   55   22   29   25   25   29    22
   8E |   10   25   11   10   80    4   24   12    9   21    5 |    31   39   28   26   48   26   39   27   31   28    27
   9E |    8   17    8   13   42    5   18   13    8   13    4 |    43   48   48   47   52   44   47   44   47   46    44
  10E |   10   18    7   11   50    6   16   10   10   28    4 |    35   40   36   35   62   36   36   38   43   45    36
  11  |   10   16   12    9   51    4   18    9    4   17    4 |    28   32   31   27   38   27   26   29   32   28    27
  12  |    9   20    7    9   26    7   21   10    6   21    4 |    18   33   22   22   35   22   31   25   24   26    22
  13  |    7   16    8   12   46    4   21    8    8   28    4 |    14   28   21   25   48   20   29   23   22   24    19
  14  |    6   21    8   11   39    5   25   10    7   17    4 |    17   29   26   26   38   20   28   23   21   21    20
  15  |    8   25    8   12   29    8   22   20   11   27    6 |    19   35   23   23   35   20   29   25   25   25    20
  16  |    9   18    8   10   33    4   28   13    7   25    5 |    19   32   23   22   39   22   37   20   24   22    21
  17  |    8   17   12    8   21    6   14   15   12   24    5 |    29   39   34   30   39   31   29   33   36   34    30
  18E |   11   20    7   15   31    7   23   13    8   15    5 |    19   29   22   21   30   19   27   23   24   25    20
  19  |    8   10    6   13   23    7   15    8    7   39    4 |    31   30   31   29   31   30   29   33   35   35    30
  20E |    8   24   11    8   28    5   18   12   11   19    5 |    12   29   18   15   25   15   23   16   19   20    15
  21  |    7   21    8    8   26    4   19   10    8   20    4 |    14   30   18   14   37   16   26   19   22   21    16
  22E |    8   16    6    8   27    3   24   12   10   10    4 |    13   26   20   17   31   18   26   17   25   20    17
  23  |    8   17   10   13   34    7   22   10    8   32    5 |    11   27   17   19   36   15   27   18   17   25    13
  24  |    9   14    5    5   26    5   13    6    6   12    3 |    15   22   17   16   24   16   18   20   20   18    16
  25E |   18   27   11   17   35    8   23   14    9   35    6 |   107  116  111  115  115  111  118  108  109  117   110
  26  |    6   15    6    6   38    5   11    8    7   17    3 |    21   28   24   23   53   21   28   24   26   32    23
  27E |   10   22    7   13   51    5   18   13    9   17    4 |   122  127  122  126  109  125  124  117  128  121   123
  28  |    8   17    9   14   38    7   20   17   11   21    5 |    18   32   23   22   46   22   32   20   20   21    19
  29  |    8   13    9   11   30    6   15    9    7   40    5 |    21   27   27   27   26   23   22   26   27   36    23
  30  |    8    9    9    6   20    6   11    7    7   25    3 |    23   28   28   24   36   24   25   25   24   24    23
  31E |   11   27   12   18   33    3   24   11    7   23    5 |    16   34   20   18   44   18   31   19   21   21    18
  32E |   14   32   11   18   27    5   17   11    8   19    5 |   102  106  101  106  104  103  107   99  109  104   104
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |    9   19    9   11   37    6   19   11    8   23      |T   30   39   34   33   45   36   37   33   34   36    31
 WRMS |    8   19    8   11   32    5   17   11    6   20      |NE  21   30   24   24   35   30   27   25   25   26    22
 MEDI |    8   17    8   11   31    5   18   11    8   21      |MD  21   30   23   23   38   22   29   25   25   25    22

Table 3.1534.1   GPS week: 1534   Day: 1   MJD: 54983.000                            

        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  |   32  ---  ---  ---  ---   54  ---   15   38  ---   21 |    28  ---  ---  ---  ---   51  ---   36   48  ---    33
   2  |    6   21   10   13   37    6   23   10   11   20    5 |    21   28   18   21   34   20   27   19   24   22    19
   3  |    7   12    9   13   30    7    8   10    5   17    3 |    20   29   17   26   20   21   23   26   24   21    22
   4  |    6   15    8   10   31    6   15   11    8   15    4 |    17   25   21   17   31   23   23   20   20   23    19
  X5  |    3  ---  ---  ---  ---  705  ---  ---  ---  ---    0 |    25  ---  ---  ---  ---  605  ---  ---  ---  ---    29
   6  |    8   13    6   13   23    6    9    9    6   20    3 |    21   31   25   29   26   26   28   26   26   29    24
   7E |   11   19    9   18   23    3   17   12    8   19    5 |    19   31   24   29   39   23   28   25   23   24    21
   8E |   12   23   13   11   56    7   19   12    8   17    5 |    26   35   31   28   47   26   35   29   30   29    27
   9E |   11   20   11   15   54    6   24    9   11   16    5 |    40   45   45   42   51   41   43   44   48   40    42
  10E |   14   19   10   16   80    5   14   10   12   22    5 |    38   40   37   42   49   39   37   39   42   40    37
  11  |   10   19   10   12   57    9   16    8   10   18    4 |    22   30   23   25   31   24   24   24   26   27    22
  12  |    8   20   10    8   29    6   21   12    8   22    4 |    22   34   28   22   34   25   32   26   27   25    25
  13  |    7   18    9   16   44    7   22   10    9   26    5 |    17   30   23   27   43   22   31   23   20   24    20
  14  |    8   20   12   11   40    7   23   10    8   17    4 |    16   30   25   24   43   22   29   21   22   23    21
  15  |    8   26   12   14   40    6   23   18   15   30    6 |    17   30   24   18   34   20   27   26   27   26    20
  16  |    8   22    8   14   32    5   26   13    7   23    5 |    20   34   21   24   36   21   34   23   23   25    21
  17  |    9   11    7    9   25    7   11   10    7   25    4 |    15   23   22   16   25   21   20   19   21   24    17
  18E |   12   17   10   16   30    4   22   14    6   15    5 |    33   40   36   34   40   34   39   35   33   35    33
  19  |    8   12    6   18   22   11   17    9    6   39    5 |    23   27   20   28   26   22   22   28   28   27    23
  20E |    7   22   10   16   30    7   20   10    8   16    4 |    12   28   20   19   26   16   23   17   17   18    14
  21  |    6   20   12   12   31    4   21   11    7   21    4 |    17   27   16   13   31   14   27   19   21   21    16
  22E |   10   18   10   11   31    4   22   11    6   10    4 |    16   28   23   20   35   18   27   19   16   19    17
  23  |    8   19   12   15   29    7   23   10    8   33    5 |    15   30   20   21   36   18   29   20   17   30    17
  24  |    8   14    8   12   22    3   10    7    7   11    3 |    16   23   20   16   18   17   17   22   21   17    18
  25E |   15   29   12   28   27   11   20   14   10   30    7 |    60   64   54   67   63   57   65   56   62   60    58
  26  |    7   16    9   10   24    5   14    8   10   20    4 |    15   25   18   17   28   19   25   20   22   25    17
  27E |   11   23   12   11   46    7   21    9   11   19    5 |   109  112  115  113  114  110  114  109  114  111   112
  28  |    9   19   10   13   40    9   21   10    8   22    4 |    18   30   20   18   40   20   31   15   18   20    17
  29  |    7   12    7   12   30    7   12    7    5   41    4 |    14   18   13   16   20   14   18   17   17   27    13
  30  |    7   13    6    7   19    5   13    8    8   19    3 |    19   21   18   16   25   18   19   20   21   21    17
  31E |    7   26   10   16   28    7   18   16   11   21    5 |    15   34   16   17   38   17   26   24   18   26    16
  32E |   12   32   13   16   49    9   16    9   10   22    5 |    85   91   88   85   78   88   86   86   83   89    84
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |    9   20   10   14   38    7   19   11    9   23      |T   26   35   29   29   38   47   33   30   30   31    27
 WRMS |    8   20   10   14   34    6   17   10    9   22      |NE  18   27   20   20   30   49   25   22   23   24    20
 MEDI |    8   19   10   13   30    7   19   10    8   20      |MD  19   30   22   22   34   22   27   24   23   25    21

Table 3.1534.2   GPS week: 1534   Day: 2   MJD: 54984.000                            

        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  |   27  ---  ---  ---  ---   31  ---   13   29  ---   17 |    26  ---  ---  ---  ---   27  ---   25   34  ---    22
   2  |    8   19   15    9   39    4   25    7   10   19    5 |    17   26   15   17   36   13   25   16   25   16    15
   3  |    8   10    8   13   42    4    7    8    8   16    3 |    19   23   23   29   19   21   20   26   25   21    21
   4  |    7   14    8    8   24    5   12   13    7   13    3 |    17   22   21   22   31   19   21   19   23   24    18
  X5  |   17   19  ---  ---  ---   25  ---   14   13  ---    9 |    22   22  ---  ---  ---   98  ---   15   24  ---    14
   6  |    7   12    8   13   29    4    7    8    7   19    3 |    23   28   30   32   23   25   26   25   26   29    24
   7E |   10   15   11   14   26    7   19   11    6   14    4 |    16   26   19   20   31   20   23   24   23   22    16
   8E |   10   22   11   12   73    7   19   12    8   16    5 |    13   24   19   18   47   16   24   20   26   20    16
   9E |   15   24   13   13   64    8   22   14    9   17    5 |    71   75   73   71   76   75   75   77   76   78    73
  10E |   11   17    8   12   82    4   15   10    9   22    4 |    27   30   26   27   41   27   24   30   32   23    25
  11  |    8   17   11   10   61    6   17    8    9   15    4 |    22   29   21   30   35   22   24   24   27   27    22
  12  |   12   22   15    9   28    6   22   14    8   20    5 |    15   33   18   23   39   18   30   18   22   20    17
  13  |    8   18   14   12   50    3   22   12    8   23    5 |     8   24   19   24   43   13   25   22   19   19    14
  14  |    8   20   10   11   36    4   21    9   10   15    4 |    15   28   26   28   33   20   27   23   26   22    20
  15  |    9   23   11   10   29    5   20   15   12   21    5 |    17   23   14   23   31   15   24   24   24   22    17
  16  |    9   20   10   11   35    3   23    8   12   23    5 |    16   30   21   25   37   19   31   17   24   20    18
  17  |    9   13   11   11   29    6   10    7   15   23    4 |    19   24   24   23   36   22   19   21   30   25    19
  18E |   10   19    6   18   26    3   20    9    9   14    4 |    15   25   22   28   37   19   26   18   30   26    20
  19  |   11   13    8   19   29    4   13    9   11   37    5 |    19   21   27   34   25   23   21   24   28   29    21
  20E |    6   19   12   16   21    4   18    9    8   17    4 |    10   21   16   23   25   11   17   15   20   15    11
  21  |    6   19   13   11   34    3   20   11    9   18    4 |    13   23   16   16   38   12   25   17   27   18    15
  22E |    8   16    8   12   29    5   21   12    8   10    4 |    20   30   26   28   34   26   30   27   28   28    24
  23  |    8   20   15   13   25    5   24    8    7   31    5 |    11   25   18   24   35   13   25   18   19   28    14
  24  |    7   13    7    7   22    5   10    9    8   11    3 |    14   18   13   16   17   15   13   20   25   16    15
  25  |   12   19   12   12   32    8   16    9    7   27    5 |    63   70   65   67   70   62   71   63   65   66    64
  26  |    7   15    7    8   23    4   10    9    9   19    3 |    13   18   15   19   28   15   19   17   25   23    15
  27E |   10   31   13   13   54    5   21   13    9   25    6 |    90   94   89   95  100   89   91   86   89   88    89
  28  |    9   24   15   17   38    7   20    9   12   18    5 |    15   29   23   21   42   16   27   13   23   14    14
  29  |    7   10    8   12   34    4   13    9    8   40    5 |    16   15   21   23   21   18   16   21   26   28    18
  30  |    7   12   11    6   20    2   13    9    8   15    3 |    15   16   21   17   28   17   16   18   25   18    15
  31E |    6   26   12   14   32    4   18    8   11   16    5 |    19   34   22   24   38   17   24   19   23   22    18
  32E |   12   35   13   12   37    4   18   11   13   24    6 |    51   64   51   50   43   49   44   48   43   52    47
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |    9   19   11   12   40    5   18   10    9   21      |T   23   31   27   29   37   27   29   26   30   28    24
 WRMS |    9   19   11   12   38    4   16   10    8   20      |NE  16   23   20   23   31   21   22   20   25   22    17
 MEDI |    8   19   11   12   32    4   18    9    9   18      |MD  17   25   21   24   35   19   24   21   25   22    18

Table 3.1534.3   GPS week: 1534   Day: 3   MJD: 54985.000                            

        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  |   22  ---  ---  ---  ---   30  ---   17   22  ---   14 |    25  ---  ---  ---  ---   37  ---   29   33  ---    25
   2  |    6   21   10    9   29    9   21    8    9   19    4 |    19   26   17   17   28   21   27   17   25   21    18
   3  |    7    8    9    6   36    6    8    8    9   18    3 |    24   29   21   27   20   25   24   28   28   23    24
   4  |    6   14    9    7   23    8    9    7    7   12    3 |    21   22   21   19   28   21   25   21   18   26    19
  X5  |   19   15  ---  ---  ---   21  ---   12   12  ---    8 |    24   16  ---  ---  ---   53  ---   15   19  ---    15
   6  |    6   10    8    5   23    5    7    7    8   21    3 |    24   34   31   30   27   29   27   28   26   31    27
   7E |   10   18    7   12   29    5   17   16    8   15    4 |    26   33   23   28   29   26   29   28   30   28    25
   8E |    9   18   11   10   58    5   19   10   11   19    4 |    18   28   22   23   37   17   30   19   22   22    19
   9E |   11   23   14   11   57    7   23   23   12   35    6 |   127  126  130  132  138  125  126  120  125  118   125
  10E |   12   15   12   12   92    8   13    9   12   19    4 |    42   39   44   39   56   39   37   42   40   40    39
  11  |    5   19   11    6   59    5   17    6    8   16    4 |    26   34   23   28   39   28   29   29   29   31    26
  12  |   10   21    9    8   31    8   21   11    7   18    4 |    22   34   28   23   48   23   33   25   25   22    23
  13  |    8   23    9   11   56    5   24   19    9   23    5 |    18   32   19   22   42   18   30   27   19   23    18
  14  |    7   22   12   12   37    3   21    9    8   15    4 |    19   33   29   26   35   21   28   23   17   20    21
  15  |    7   24   11    8   29    4   22   13   16   20    5 |    18   29   26   20   31   21   27   22   30   17    20
  16  |    8   20   11    9   31    7   23    7   10   24    5 |    19   33   22   20   45   18   30   18   20   20    19
  17  |    8    9   11    9   38    8   10    7   11   22    4 |    24   27   25   25   42   26   26   27   29   29    24
  18E |    9   15    9   19   21    3   21    7    9   13    4 |    28   34   32   34   38   29   34   30   27   34    29
  19  |    6   10   10    7   22    6   13    7   10   40    4 |    26   27   24   27   28   26   26   29   33   32    26
  20E |    5   15   13   11   29    4   17    9   10   17    4 |    14   21   22   16   28   16   21   14   16   19    14
  21  |    6   20    9   10   32    4   21   11    9   17    4 |    13   26   13   14   39   13   24   18   18   18    13
  22E |    9   18    9   10   33    3   22    8    6    9    4 |    11   27   23   20   31   17   26   15   16   19    15
  23  |    7   22    9   12   40    6   23   11    8   31    5 |    15   28   18   19   38   15   25   18   16   28    14
  24  |    7   11    5    7   28    4   10    7    8   12    3 |    15   22   18   19   16   17   17   23   20   20    17
  25  |    8   19    9    9   31    5   19   11    8   26    4 |    64   67   60   64   56   60   69   64   61   68    62
  26  |    7   15    8    7   20    5    9    7   10   17    3 |    13   19   19   17   29   15   19   16   23   22    15
  27E |   16   23   11   15   33    4   20   10    9   28    6 |    92   96   90   91   95   92   93   92   96   98    92
  28  |    8   22    7    9   36    5   19    7   12   18    4 |    15   31   19   17   44   15   29   16   19   17    16
  29  |    8   11    9   10   25    5   13    8    8   39    4 |    18   20   18   21   24   18   19   23   20   29    18
  30  |    7   11    8    6   13    4   10    7    8   14    3 |    12   17   16   16   22   16   15   19   16   20    13
  31E |    8   26    8   12   28    5   19    9   11   12    4 |    21   38   26   26   35   22   31   25   21   25    22
  32E |   10   35   12   20   29    5   19   11   13   25    6 |    77   83   78   83   67   76   77   78   81   78    77
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |    8   19   10   11   38    6   18   10   10   22      |T   29   36   31   32   41   31   35   31   31   33    29
 WRMS |    7   18   10   11   37    5   16    9    8   20      |NE  19   26   21   21   32   22   25   22   23   23    19
 MEDI |    8   18    9    9   31    5   19    9    9   18      |MD  21   29   23   23   35   21   27   23   23   23    20

Table 3.1534.4   GPS week: 1534   Day: 4   MJD: 54986.000                            

        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  |   31  ---  ---  ---  ---   26  ---   13   36  ---   20 |    27  ---  ---  ---  ---   31  ---   17   34  ---    21
   2  |    7   23   10   11   31    5   23    8    9   19    4 |    17   29   19   17   25   15   28   17   21   20    16
   3  |    6   11    6    8   37    5    9    6    8   20    3 |    18   22   20   21   20   18   20   26   21   21    20
   4  |    6   15   10    7   22    4    9    6    9    9    3 |    19   23   27   22   28   18   23   17   17   25    19
  X5  |   23   22  ---  ---  ---   26  ---   10   16  ---   10 |    22   17  ---  ---  ---   39  ---   14   22  ---    13
   6  |    6   13    6    7   36    6    9    7   10   21    3 |    22   28   28   27   28   26   25   27   24   28    24
   7E |    8   17   12   22   37    6   18   17   15   17    6 |    22   26   28   35   47   25   26   32   31   33    25
   8E |    9   17   11    8   56    4   19    9   11   17    4 |    22   27   24   23   40   22   31   18   23   24    20
   9E |   13   26   10   15   24    6   20   10   12   21    5 |    87   91   84   85  100   87   88   90   88   90    87
  10E |   11   17   12    9   73    5   14    8   12   18    4 |    21   24   23   20   33   19   23   24   29   18    21
  11  |    6   17   11   10   64    3   18    6    7   17    4 |    23   28   26   23   38   22   25   27   30   30    24
  12  |    7   25    8    8   25    4   21    8    6   18    4 |    16   37   24   19   33   21   32   20   23   19    21
  13  |    8   19   12   11   38    4   24   12    9   19    5 |    13   26   20   18   45   16   29   23   20   17    16
  14  |    7   20   12    7   39    4   18    9   10   14    4 |    14   30   26   22   36   20   28   20   20   17    18
  15  |    4   22    8   12   28    4   20    8   12   17    4 |    15   27   19   24   30   18   25   17   22   15    17
  16  |    8   20    8    9   40    7   22    9   12   20    4 |    15   28   19   16   35   18   28   17   23   17    17
  17  |    7   11   10   11   28    6   11    7   14   25    4 |    22   26   27   27   36   23   23   23   24   26    22
  18E |    9   19   11   16   25    4   19    8    5   13    4 |    17   25   19   17   31   17   25   16   15   21    13
  19  |    7   11   10   15   18    6   15    6   12   40    5 |    21   25   25   26   31   21   23   25   26   26    22
  20E |    4   16   10    6   35    6   19    8    6   16    3 |    10   20   15   12   30   11   19   13   13   15     9
  21  |    6   19   11    8   24    4   20    8    8   17    4 |    13   24   17   13   32   13   25   16   20   16    14
  22E |   10   15   11    8   40    4   19    8    7   10    4 |    13   23   21   22   35   16   25   15   20   19    16
  23  |    6   18   10    9   29    6   23    8    9   31    5 |    12   26   16   15   32   12   26   14   15   26    12
  24  |    8   12    8    5   29    4    9    6    9   12    3 |    14   17   16   12   17   13   15   18   24   16    15
  25  |    8   20    9    8   25    4   16    8    9   25    4 |    42   48   42   41   52   40   48   40   39   48    40
  26  |    6   14   10    7   24    2   12    5    6   17    3 |    16   21   21   21   32   16   22   17   22   24    18
  27  |   11   18    7   14   30    4   17    8   10   17    4 |    66   80   75   85   88   74   80   75   78   77    76
  28  |    7   22   10    9   34    6   20    8   13   17    4 |    15   30   21   18   43   19   28   13   25   17    16
  29  |    8   12   13   13   27    6   13    9    7   39    5 |    17   18   20   21   25   16   18   21   22   29    17
  30  |    4   11    7    5   19    3    9    8    5   15    2 |    12   14   16   12   25   12   16   16   15   21    12
  31E |    6   17   10    8   36    4   16    7    7   13    3 |    10   23   17   10   35    9   21   11   16   12    10
  32E |   11   29   10   11   46    6   15    9   10   25    5 |    45   51   47   48   50   47   50   51   51   49    48
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |    8   18   10   11   36    5   17    8   10   20      |T   22   30   26   25   37   24   29   24   27   27    23
 WRMS |    7   18   10   11   36    5   15    7    7   19      |NE  17   24   21   19   31   19   24   19   22   21    17
 MEDI |    7   17   10    9   30    4   18    8    9   17      |MD  17   26   21   21   33   18   25   18   22   21    18

Table 3.1534.5   GPS week: 1534   Day: 5   MJD: 54987.000                            

        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  |   26  ---  ---  ---  ---   25  ---   11   31  ---   17 |    28  ---  ---  ---  ---   31  ---   28   41  ---    29
   2  |    7   21   10    9   35    4   24    7   10   20    4 |    17   28   15   17   33   13   27   15   20   18    15
   3  |    6   11    7    8   28    5    8    9    8   23    3 |    18   19   16   17   13   17   17   21   26   19    18
   4  |    4    9    8    8   22    4   11    4    9   10    3 |    16   18   14   18   31   16   21   15   17   23    15
  X5  |   17  ---  ---  ---  ---   20  ---   17   13  ---   11 |    15  ---  ---  ---  ---   26  ---   19   17  ---    12
   6  |    4   11    8    5   33    4    7    7   12   23    3 |    20   27   27   21   27   23   24   20   23   30    21
   7E |    8   16    8   15   34    5   19   11    9   13    4 |    28   30   24   29   32   25   31   29   28   30    26
   8E |   12   16   10   11   58    5   19    8    9   14    4 |    25   27   26   27   40   24   32   25   28   24    25
   9  |   11   17    9    8   33    4   18    6    9   15    4 |    86   91   90   87   98   85   88   86   94   83    88
  10E |   10   13    7    9   55    7   15    6    8   15    3 |    36   37   41   40   54   37   36   40   39   35    38
  11  |    8   14    9    9   67    4   17    9    6   19    4 |    22   24   19   26   35   20   23   23   24   26    21
  12  |    7   22    8    7   31    4   23   10    7   18    4 |    21   32   26   22   42   23   31   23   24   18    23
  13  |    8   19    6   10   43    3   23   13    4   18    4 |    11   25   18   15   46   13   28   19   17   13    14
  14  |    6   18   12    8   36    4   20   10   12   14    4 |    14   29   23   19   37   18   26   16   21   14    18
  15  |    7   22    7   10   24    3   20    9    9   15    4 |    18   28   19   20   33   17   27   18   23   16    18
  16  |    6   18    8   11   40    6   21    7   11   21    4 |    14   31   24   17   45   18   28   15   17   19    17
  17  |   10   10   11    6   28    4   12    6   14   24    4 |    18   23   19   20   30   16   20   18   23   21    17
  18E |    9   19   10   10   20    4   22    9    8   13    4 |    24   31   29   25   37   25   31   28   28   28    26
  19  |    7   11    8    4   40    5   11    8   12   43    5 |    18   20   17   17   29   15   18   18   25   27    16
  20E |    6   16    7   11   35    5   20    8    9   11    4 |    10   19   11   15   32    9   18   12   13   13     8
  21  |    8   17    8    8   25    5   22    9    7   18    4 |    15   22   17   14   29   13   25   16   22   16    16
  22E |   10   17   11   11   27    3   22   10    9    9    4 |    10   25   17   17   29   13   22   10   16   15    12
  23  |    8   23    9   11   33    4   25   10    7   33    5 |    10   28   17   17   37   12   25   15   14   27    12
  24  |    7   12    6    6   29    3   10   10    6   14    3 |    14   17   14   11   18   12   14   18   19   15    14
  25  |    7   19    6    8   37    3   16    9    8   27    4 |    36   44   35   38   51   36   44   37   37   42    36
  26  |    5   12   10    4   19    4   11    6    8   17    3 |    14   17   17   13   25   15   20   15   17   25    15
  27  |    8   21    8    7   28    5   17    5    8   21    4 |    53   62   60   57   75   57   64   54   61   55    57
  28  |    8   18   15    7   37    4   18    8   10   15    4 |    14   28   19   16   43   15   27   13   19   16    15
  29  |    7   12    8    8   25    6   14   11    7   39    4 |    13   15   16   12   23   12   13   15   18   27    13
  30  |    6   13    8    6   26    3   11   10    8   15    3 |     9   15   15   12   32   11   13   15   18   20    12
  31E |    9   17    9   12   23    4   17    9   10   13    4 |    15   26   25   21   33   19   23   19   21   22    18
  32E |   10   28    9    9   47    6   19    8    8   22    5 |    79   83   80   80   82   78   78   81   81   80    80
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |    8   17    9    9   36    4   18    9    9   20      |T   23   30   26   25   39   23   29   24   27   27    23
 WRMS |    7   17    9    9   33    4   16    8    7   20      |NE  16   23   18   17   32   16   22   17   21   20    16
 MEDI |    8   17    8    8   33    4   18    9    9   17      |MD  17   27   19   18   33   17   25   18   22   22    17

Table 3.1534.6   GPS week: 1534   Day: 6   MJD: 54988.000                            

        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  ---  ---  ---  ---   26  ---   13   34  ---   19 |    27  ---  ---  ---  ---   22  ---   20   32  ---    22
   2  |    7   19    8   11   29    6   19    6    7   21    4 |    16   26   15   17   27   15   27   15   18   18    14
   3  |    6   11    8    8   35    4    8    9    8   24    3 |    28   36   34   34   18   32   31   35   33   30    31
   4  |    6   10    9   13   27    8    9   11   10   15    3 |    19   26   20   23   29   21   24   24   20   27    20
  X5  |   14   22  ---  ---  ---   34  ---   13   15  ---    9 |    11   18  ---  ---  ---   45  ---   15   23  ---    11
   6  |    5   12    7    8   31    4    8    8    8   27    3 |    31   41   41   37   28   35   34   39   34   38    35
   7E |    9   16    9   20   33    4   18   12   12   14    5 |    23   30   22   28   32   24   29   28   25   28    23
   8E |   17   19   13   18   65    8   21    9   10   17    5 |    31   37   36   43   50   35   35   35   37   41    34
   9  |    8   14    9   12   35    6   19    9    9   19    4 |    82   85   83   79   85   82   90   81   87   78    82
  10E |   11   13    9   11   77    4   16    9    9   22    4 |    46   45   44   50   42   45   42   51   45   55    45
  11  |    9   19   11    8   63    3   20    6    8   20    4 |    29   40   30   31   45   29   30   29   29   34    28
  12  |    9   22   11   10   30    4   22   10   10   20    5 |    26   41   33   29   39   27   42   27   27   30    29
  13  |    7   16    6   15   39    3   24   11    9   24    5 |    15   28   20   24   38   20   28   22   20   21    17
  14  |    7   18   10   13   27    4   21    8   11   14    4 |    16   28   27   29   36   24   28   22   24   17    21
  15  |    6   25   12    9   30    5   22    9   13   18    5 |    15   30   22   18   31   14   25   18   24   15    16
  16  |    6   19    8    8   29    3   23    9    8   25    4 |    18   33   27   20   39   20   34   17   22   20    20
  17  |    9    9    9   15   21    7   11   11   18   24    5 |    32   37   38   35   40   33   32   33   35   32    32
  18E |    9   17    8   13   21    6   19    8    9   16    4 |    21   26   28   23   31   24   28   20   26   31    23
  19  |    7   10    7    8   47    4   15    8   12   42    4 |    29   33   32   33   40   30   28   32   33   37    30
  20E |    5   14    7   11   32    4   17    7    6   12    3 |     9   18   11   13   26    9   17   11   12   13     8
  21  |    9   19    7    8   25    6   21   11    9   19    4 |    16   25   16   13   35   13   27   18   24   20    16
  22E |   11   18    9   14   33    5   20   13    7   12    5 |    17   29   25   24   29   22   27   22   26   26    21
  23  |    7   17    8   12   29    4   25    8   11   34    5 |    14   26   19   20   33   17   25   19   19   29    15
  24  |    8   13    6    7   23    6    8   10    7   13    3 |    18   21   17   16   18   15   18   23   20   21    17
  25  |    7   21    6    9   31    5   15    9   11   27    4 |    67   68   63   68   70   63   68   65   63   68    64
  26  |    6   12    9    4   25    4   11    6    9   21    3 |    15   16   17   15   27   16   20   17   21   22    15
  27  |    7   15    7    9   25    6   17    8    9   20    4 |    68   74   73   70   79   69   80   68   73   73    71
  28  |    7   17   12    9   32    6   19   12   15   14    4 |    14   25   17   18   44   17   27   17   23   15    15
  29  |    6   12    8    8   35    6   13   13    8   38    4 |    22   22   22   26   36   22   22   27   26   35    22
  30  |    6   11    6    7   18    5   12   10   11   17    3 |    13   14   16   17   23   14   15   19   20   23    14
  31E |    5   20    6   12   32    5   16   11    9   16    4 |    13   28   17   15   31   12   24   16   15   18    14
  32E |   10   26    7   13   38    7   19    8    8   27    5 |   107  103  107  109   95  102  101  105  103   97   104
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |    8   17    9   11   36    5   18   10   10   22      |T   28   35   32   32   39   30   35   30   32   33    29
 WRMS |    7   17    8   11   34    5   16    9    7   22      |NE  20   28   24   23   32   22   27   23   25   25    20
 MEDI |    7   17    8   10   31    5   18    9    9   20      |MD  19   29   25   24   35   22   28   22   25   28    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 4.1534   GPS week: 1534   MJD: 54982.0-54988.0

CENT| CLK EPO  |        BRUS       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3048 |U    8     7    21 |U    6     8    24 |U    8     9    20 |
emr | emr 2928 |    12    11    27 |    10    10    42 |U    8     9    21 |
esa | esa 2880 |     8     8    22 |U    5     8    24 |     7     9    19 |
gfz | gfz 2842 |U   16    22    37 |U   16    19    56 |    14    15    32 |
grg | grg 2880 |     9     9    25 |U    8     8    29 |    12    10    28 |
igr | igr 2855 |     8     7    22 |     7    11    26 |     8     8    20 |
igs | igs 2924 |     8     7    22 |     7    10    31 |     7     8    18 |
jpl | jpl 2862 |     9     8    24 |U   10    11    52 |U    8     8    19 |
mit | mit 3058 |U    8     8    22 |U   12    19    49 |U   10    13    28 |



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 5.1534.0   GPS week: 1534   Day: 0   MJD: 54982.0

CENT| CLK EPO  |        BRUS       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3055 |     7     6    15 |     6     9    23 |    10     9    18 |
emr | emr 2949 |     9     7    24 |     8    10    30 |     9     9    14 |
esa | esa 2880 |     7     5    17 |     5     8    22 |     8     9    20 |
gfz | gfz 2837 |     7     6    22 |    14    16    40 |     8     9    21 |
grg | grg 2880 |     8     8    19 |     6     9    31 |    10     9    25 |
igr | igr 2810 |     7     5    18 |     5    11    22 |     9     8    17 |
igs | igs 2936 |     7     5    19 |     8    13    28 |     8     9    17 |
jpl | jpl 2859 |     8     6    20 |    14    12    77 |     9     9    16 |
mit | mit 3072 |     8     6    18 |    11    13    43 |    11    10    21 |

Table 5.1534.1   GPS week: 1534   Day: 1   MJD: 54983.0

CENT| CLK EPO  |        BRUS       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3053 |    12    11    31 |     8    10    23 |     7     6    17 |
emr | emr 2860 |    13    14    34 |     8     8    24 |     8     8    22 |
esa | esa 2880 |    12    12    28 |     7     9    23 |     6     6    18 |
gfz | gfz 2837 |    12    12    32 |    12    10    40 |     9    10    30 |
grg | grg 2880 |    12    11    33 |     9     8    21 |    11     7    25 |
igr | igr 2896 |    11    11    28 |     7     8    23 |     7     6    20 |
igs | igs 2832 |    12    12    30 |     7     7    22 |     6     5    16 |
jpl | jpl 2858 |    12    12    29 |    12    11    57 |     6     4    18 |
mit | mit 2976 |    11    11    28 |    10    17    50 |     7     6    18 |

Table 5.1534.2   GPS week: 1534   Day: 2   MJD: 54984.0

CENT| CLK EPO  |        BRUS       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3044 |     8     7    19 |     5     8    22 |     5     6    14 |
emr | emr 2959 |    11    10    23 |     8    10    34 |     7     9    20 |
esa | esa 2880 |     8     8    23 |     4     6    24 |     5     7    13 |
gfz | gfz 2839 |     8     8    26 |    12    12    44 |     5     5    12 |
grg | grg 2880 |     8     7    24 |     7     7    30 |     9     8    26 |
igr | igr 2822 |     8     6    20 |     6    10    25 |     5     7    12 |
igs | igs 2974 |     8     7    20 |     5     8    23 |     6     7    13 |
jpl | jpl 2861 |     9     8    21 |    12    11    65 |     6     7    15 |
mit | mit 3072 |     8     7    19 |    11    23    44 |    11    21    22 |

Table 5.1534.3   GPS week: 1534   Day: 3   MJD: 54985.0

CENT| CLK EPO  |        BRUS       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3059 |     7    10    17 |     6    12    20 |     8     9    26 |
emr | emr 2954 |    13    15    24 |     9    12    31 |     8    11    24 |
esa | esa 2880 |     8    11    18 |     6     8    25 |     7     9    22 |
gfz | gfz 2842 |    66   105   103 |    40    53   143 |    55    53   100 |
grg | grg 2880 |     8    13    22 |     9    11    27 |    11    13    27 |
igr | igr 2840 |     7    11    18 |     7    10    24 |     7     8    24 |
igs | igs 3002 |     7    11    19 |     7    14    24 |     7     8    21 |
jpl | jpl 2865 |     9    13    21 |    11    14    57 |     7    10    22 |
mit | mit 3072 |     7    10    18 |    11    14    59 |    10    11    35 |

Table 5.1534.4   GPS week: 1534   Day: 4   MJD: 54986.0

CENT| CLK EPO  |        BRUS       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3035 |     8     4    19 |     5     7    29 |     9    13    23 |
emr | emr 2958 |    13    11    32 |     7     8    31 |    11     8    20 |
esa | esa 2880 |     9     6    23 |     5     5    24 |     8    10    21 |
gfz | gfz 2847 |     8     5    28 |    13    12    39 |     8    11    18 |
grg | grg 2880 |    11     9    24 |     9     7    35 |    13    10    33 |
igr | igr 2871 |    10     6    26 |     6     9    25 |    10    10    24 |
igs | igs 2955 |     8     4    22 |     9     7    46 |     9     9    20 |
jpl | jpl 2867 |     9     6    26 |    10     9    48 |     8     7    19 |
mit | mit 3072 |    10     8    30 |    14    31    61 |    11    14    28 |

Table 5.1534.5   GPS week: 1534   Day: 5   MJD: 54987.0

CENT| CLK EPO  |        BRUS       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3045 |     8     7    20 |     5     7    26 |     8    12    25 |
emr | emr 2868 |    10     8    22 |    13    14    75 |     8    11    28 |
esa | esa 2880 |     6     7    19 |     6     8    31 |     8    12    22 |
gfz | gfz 2844 |     7     9    23 |    12    15    45 |     9    11    22 |
grg | grg 2880 |     7     8    23 |     8    10    34 |    14    16    30 |
igr | igr 2870 |     7     6    18 |     8    13    31 |     8    11    23 |
igs | igs 2865 |     7     6    19 |     9    10    51 |     7    10    21 |
jpl | jpl 2863 |     8     7    20 |     7    11    31 |     8    11    25 |
mit | mit 3072 |     6     5    18 |    11    18    42 |    12    16    41 |

Table 5.1534.6   GPS week: 1534   Day: 6   MJD: 54988.0

CENT| CLK EPO  |        BRUS       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3049 |     7     7    24 |     5     7    23 |     9     8    20 |
emr | emr 2954 |    13     9    28 |    14    12    67 |     8     8    21 |
esa | esa 2880 |     8     6    24 |     5     8    21 |     9     8    19 |
gfz | gfz 2848 |     7     6    24 |    12    13    41 |     9     7    19 |
grg | grg 2880 |    11     9    28 |     8     7    25 |    13     8    28 |
igr | igr 2881 |     8     7    25 |    10    14    32 |     9     9    22 |
igs | igs 2907 |     8     6    24 |     7    11    27 |     8     7    18 |
jpl | jpl 2867 |    10     8    29 |     7    10    27 |     9     8    20 |
mit | mit 3072 |     7     6    25 |    12    14    45 |     9    13    31 |


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 6.1534   GPS week: 1534   MJD: 54982.500-54988.500

                                                         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 |       7       8      51     -87      9 |      -2     22
            |      22      29      93     133      5 |       3
emr   uuuuu |      23      36     172       5    -18 |      25     43
            |      19      31     105      63      4 |       6
esa   uuuuu |     -43     -27      -7     110      3 |       1     16
            |      36      24     148     179      3 |       1
gfz   uuuuu |       3     -32      55     -88      0 |      22     31
            |      15      17      36      67      9 |       2
grg   xxxxx |      -3     -45      12     -98      0 |       4     29
            |      34      37      80      61     26 |       7
igr   xxxxx |      22      -1       6       2      9 |      -4     19
            |      19      23      49      62      7 |       3
irf   xxxxx |       1      19      25      -4     -2 |      -5     27
            |       7       8      13      17      6 |       2
jpl   uuuuu |     -19      19      34      20      1 |      -5     31
            |      25      18     107      98      9 |       3
mit   uuuuu |      14      12     -66       9    -10 |       4     32
            |      12      16      70      76      7 |       4
ngs   uuuuu |      23     -15      14       6      3 |       3     18
            |      54      22      75      83      4 |       2
sio   uuuuu |      13      98    -222    -164    -22 |      54     63
            |      28      14     131      55      9 |       8


Table 7.1534.0   GPS week: 1534   Day: 0   MJD: 54982.500

                                                         AC LOD  AC LOD
CENT  FLAG  |   Xpole   Ypole     Xrt     Yrt    LOD |    BIAS  BIAS RMS
            |   [uas]   [uas]   [uas/d] [uas/d]  [us]|    [us]    [us]
------------+----------------------------------------+------------------
cod   xxxxx |     -22      27     119      99      8 |      -6     22
emr   uuuuu |       6       1      86      23    -17 |      27     45
esa   uuuuu |     -36     -24     146     133      1 |       1     15
gfz   uuuuu |      13     -23       2      55     10 |      18     27
grg   xxxxx |     -47     -12     103     -27     -6 |      -4     41
igr   xxxxx |      19     -12      29     -63      4 |     -10     22
irf   xxxxx |       6      24      13     -13     -7 |      -6     27
jpl   uuuuu |      24      -7     123     -21      0 |     -10     35
mit   uuuuu |      27      26    -132    -105    -14 |       4     32
ngs   uuuuu |     -16      -5     -23     -18      4 |       0     19
sio   uuuuu |      28      96    -341    -238    -31 |      62     69

Table 7.1534.1   GPS week: 1534   Day: 1   MJD: 54983.500

                                                         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 |     -29     -49      39     -39     15 |      -4     24
emr   uuuuu |      34       0     216     -48    -15 |      29     46
esa   uuuuu |     -30     -33     108     248      0 |       2     16
gfz   uuuuu |     -20     -64      82    -140      7 |      20     31
grg   xxxxx |       0    -103      98     -86     24 |      -5     41
igr   xxxxx |      62       6      95      40     13 |      -8     23
irf   xxxxx |       1      27      20       3     -7 |      -4     28
jpl   uuuuu |     -26       7     159     -39      3 |      -6     35
mit   uuuuu |      17      32    -132      -3    -15 |       7     33
ngs   uuuuu |      11       0     -60     -48      8 |       0     20
sio   uuuuu |      26     118    -385    -179    -30 |      61     68

Table 7.1534.2   GPS week: 1534   Day: 2   MJD: 54984.500

                                                         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 |      25      42      75    -270      4 |      -1     22
emr   uuuuu |      54      26     244     -91    -23 |      31     46
esa   uuuuu |      18     -10     132     183      9 |       2     16
gfz   uuuuu |      20     -23      47    -121      5 |      23     32
grg   xxxxx |      10     -16     -92    -202     35 |      -1     40
igr   xxxxx |      19      26      -1     -44      3 |      -4     19
irf   xxxxx |       6      25      16     -31     -9 |      -2     27
jpl   uuuuu |      -3       4     -63      -9     -7 |      -3     32
mit   uuuuu |       3      25     -92     -20    -18 |       8     32
ngs   uuuuu |     -60     -41     -28      59      2 |       2     19
sio   uuuuu |      24      95    -276    -160    -31 |      59     67

Table 7.1534.3   GPS week: 1534   Day: 3   MJD: 54985.500

                                                         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      14     -14       2     13 |      -1     22
emr   uuuuu |      24      33     142     -27    -23 |      29     46
esa   uuuuu |     -32      10      36     347      0 |       0     17
gfz   uuuuu |     -18     -41      50    -133      2 |      23     32
grg   xxxxx |     -43     -66     -59     -98      0 |      10     24
igr   xxxxx |      12       4      27     -40      6 |      -3     18
irf   xxxxx |       9      20      16       8      2 |      -3     28
jpl   uuuuu |     -12      36     -97     -54     -5 |      -1     29
mit   uuuuu |      22       5    -127      32     -5 |       7     33
ngs   uuuuu |       3     -42     130    -145      7 |       3     18
sio   uuuuu |      49      96    -274    -152    -18 |      56     66

Table 7.1534.4   GPS week: 1534   Day: 4   MJD: 54986.500

                                                         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 |      24       4    -104    -249      4 |       1     21
emr   uuuuu |      24      38     344      27    -20 |      27     46
esa   uuuuu |     -87     -21    -194     105      4 |       0     17
gfz   uuuuu |       5     -33      25     -75     -5 |      25     32
grg   xxxxx |      48     -49      52     -40      0 |       6     22
igr   xxxxx |      18      18     -27      98      3 |      -2     17
irf   xxxxx |      -7      21      41     -18      0 |      -3     28
jpl   uuuuu |     -26      30     140     107     -3 |      -2     30
mit   uuuuu |      -4       9      18     -45    -11 |       6     33
ngs   uuuuu |      77     -30     -28      39      5 |       4     17
sio   uuuuu |      11     114    -159    -220    -20 |      53     64

Table 7.1534.5   GPS week: 1534   Day: 5   MJD: 54987.500

                                                         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 |      14      19     185     -44     12 |       0     20
emr   uuuuu |      -3      73      29      82    -18 |      21     40
esa   uuuuu |     -84     -63     -89    -158      5 |       0     17
gfz   uuuuu |       7      -8     109    -102    -15 |      23     31
grg   xxxxx |      23       0     -54     -80     -9 |      10     20
igr   xxxxx |       3      -1     -35      56     12 |      -3     17
irf   xxxxx |     -10       6      45      20      4 |      -6     26
jpl   uuuuu |     -34      39     -48     203     19 |      -7     26
mit   uuuuu |       7     -13      12      96     -4 |       1     30
ngs   uuuuu |      94      10      -4      57     -3 |       5     18
sio   uuuuu |     -31      79     -62     -79    -12 |      46     57

Table 7.1534.6   GPS week: 1534   Day: 6   MJD: 54988.500

                                                         AC LOD  AC LOD
CENT  FLAG  |   Xpole   Ypole     Xrt     Yrt    LOD |    BIAS  BIAS RMS
            |   [uas]   [uas]   [uas/d] [uas/d]  [us]|    [us]    [us]
------------+----------------------------------------+------------------
cod   xxxxx |      23      -2      56    -106      5 |       1     20
emr   uuuuu |      19      78     142      70    -11 |      14     35
esa   uuuuu |     -53     -49    -188     -89      4 |       2     16
gfz   uuuuu |      10     -31      68     -98     -5 |      20     29
grg   xxxxx |     -11     -70      38    -151    -46 |      12     18
igr   xxxxx |      17     -46     -47     -34     22 |      -1     16
irf   xxxxx |      -1      13      27       3      6 |      -8     26
jpl   uuuuu |     -55      23      24     -50      1 |      -7     26
mit   uuuuu |      25       0      -8     109      0 |      -3     28
ngs   uuuuu |      51       2     111     100      1 |       4     18
sio   uuuuu |     -18      89     -58    -120    -13 |      41     51



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