[IGSREPORT-19773] Wk 1634 IGS Final Orbits

Jim Ray igs.acc at noaa.gov
Thu May 19 23:41:47 PDT 2011


Author:  AC Coordinator / NOAA NGS

sum-file Version 2.0
Final IGS Orbit Combination - Week 1634   (May 01, 2011 - May 07, 2011)

Contacts: J. Ray       (jim.ray at noaa.gov),
          J. Griffiths (jake.griffiths at noaa.gov)


COMBINATION STRATEGY:
---------------------

Starting with GPS week 860, the IGS Final orbit combination is done directly
in the ITRF without any alignment to the Bulletin B EOP series.

Each centre satellite clock corrections are first transformed to a common 
reference. One of the following two methods can be used (the REMARKS section of
this report gives which method is used):
[1] For each centre, a clock offset and a drift are estimated with respect to
    the broadcast clock corrections using only non-SA satellites;
[2] A chosen reference centre is aligned to the broadcast clock corrections
    using all satellites. All other centres are then aligned to that reference
    centre. 
The offsets and drifts are used to align each centre satellite clock
corrections to GPS time. Ephemerides and clock corrections are then combined
as weighted averages computed over all centres. Each centre is given a
position weight and a clock weight. The position weights are computed from
each centre's absolute deviation to the unweighted average orbit after the
estimation of a 7-parameter Helmert transformation. The clock weights are
either computed from [1] the absolute deviation of the initial alignment to
broadcast clock for the non-SA satellites, or [2] from the absolute deviation
of centre's aligned clock corrections with respect to the unweighted mean.
Finally, a 7-parameter Helmert transformation and clock offset and drift are
estimated for each centre with respect to the combined solutions and parameters
and RMS of fit reported. All the above estimations are performed using the
L1-norm robust scheme.

  Each centre ephemerides are also evaluated individually and independently from
the orbit combination by using week long arcs. The Earth Orientation Parameters
(EOP) used in this evaluation are those submitted by the respective centres.
The IGS combined orbits/clocks and all centres providing both orbit and clock 
solutions are further evaluated by an independent point positioning (navigation)
program that uses both phase and pseudorange data. This is primarily intended 
for testing clock solution precision as well as the orbit/clock consistency.

 Like the clock solutions broadcast in the navigation message, the combined
satellite clocks are corrected for the periodical relativistic correction (see
e.g. GPS interface Control document ICD-GPS-200, p.73):

                              -2*(X.V)/c  [distance unit],

where X and V are the inertial sv state and velocity vectors and c is the speed
of light. Also for compatibility, no satellite L1/L2 delay calibration should be
applied.


SOFTWARE:
---------

The weighted average software used was originally developed by T. Springer
and G. Beutler in 1993. The GPS long arc orbit analysis software used here for
individual centre ephemeris evaluation was developed by Beutler et al. at the
Astronomical Institute of the University of Bern (AIUB). For more details on
the orbit combination and complete references for both software see:

  Beutler G., Kouba J. and T. Springer, 1995, Combining the orbits of the IGS 
  Analysis Centers, Bulletin Geodesique, 69, pp 200-222.

  Kouba J., Mireault Y. and F. Lahaye, 1995, 1994 IGS Orbit/Clock Combination
  and Evaluation, Appendix I of the Analysis Coordinator Report, International
  GPS Service for Geodynamics (IGS) 1994 Annual Report, pp. 70-94.

  Kouba J. and Y. Mireault, 1996, IGS Analysis Coordinator Report, 
  International GPS Service for Geodynamics (IGS) 1995 Annual Report, 
  pp. 45-76.

  Kouba J. and Y. Mireault, 1997, Analysis Coordinator Report, 
  International GPS Service for Geodynamics (IGS) 1996 Annual Report, 
  pp. 55-100.


PRODUCTS GENERATED:
-------------------

The resulting average ephemeris and clocks are output to daily files in SP3
format. The satellite accuracy codes displayed in the header are based on the
weighted RMS for each satellite. Note that each file contains all the
satellites that appear in any of the centre ephemeris files. If a satellite or
centre was excluded from combination, a note in the REMARKS section of this
report will identify the exclusion and the reason.

  The resulting x and y earth rotation parameters (ERP) associated with the IGS
ephemeris files and their rates (xrt, yrt) are computed using a weighted average
of all available centres (as part of the separate SINEX combination since GPS
week 1051; weighted according to the orbit combination before that time). 

  Starting with GPS wk 0894, IGS LOD combinations were implemented in the 
Final IGS solutions.  AC LOD biases with respect to Bulletin A are estimated
using Bulletin A most recent 3 weeks (21 days), i.e. up to 5 days prior to
the last non-predicted day of Bulletin A.  AC LOD biases are removed and the
new AC bias-free LODs are used to compute a weighted IGS LOD which in turn
is integrated into IGS UT1-UTC. The starting UT1-UTC value is chosen as
Bulletin A fifth day prior to its last non-predicted day. Both IGS LOD and 
UT1-UTC values are printed in the IGS Final erp file.



The Final Orbit files generated and uploaded into CDDIS @ NASA/GSFC are:

igs1634[0-6].sp3  IGS GPS ephemeris files in SP3 format.
igs1634[0-6].clk  IGS GPS satellite and station clocks in clock RINEX format.
igs1634[0-6].cls  IGS GPS clock combination summary report.
igs16347.erp      Earth Rotation Parameters (ERP) and their rates as well as
                  Universal Time (UT1-UTC) and Length Of Day (LOD) associated 
                  with IGS ephemerides.
igs16347.sum      Complete report.

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

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

 2. Rapid (IGR) orbits/clocks are included in the combination for statistics only.
    Starting week 1582, a new solution from CNES/GRGS (GRG) is included with
    weight except for the clock and LOD combinations.

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

 4. The following clock solutions were excluded from the combination because they
    were biasing the combined clock solutions (clock shifts/outliers) but were
    kept for the RMS computation.  Duplicate entries can arise due to separate
    combination runs for the 30-s clocks ACs (listed first) and the 5-min clock
    ACs (listed second).
    
               Day | Centre | PRN/STA list
               ----+--------+---------------
                0  |  EMR   | 8 8 MCM4 MCM4 YELL
                0  |  ESA   | UNSA
                0  |  GFZ   | 8 13 DAV1 GUAM MCM4 MDVJ
                0  |  JPL   | 8 15 25 TIXI
                0  |  MIT   | DAV1 SOFI
                1  |  COD   | NRMD
                1  |  EMR   | 8 8 KERG
                1  |  ESA   | MCM4 MCM4 UNSA
                1  |  GFZ   | 8 MDVJ
                1  |  GRG   | USN3
                1  |  JPL   | 8 15 25 MAC1 TIXI
                1  |  MIT   | DARW MAC1 TIXI DARW MAC1
                2  |  ALL   | 1 1
                2  |  EMR   | 8 8
                2  |  GFZ   | 8 MAW1 MDVJ
                2  |  JPL   | 8 15 25 MAW1
                2  |  MIT   | CHUR MAW1 MAW1 SOFI
                3  |  COD   | ALGO ALGO BRAZ
                3  |  EMR   | 8 8
                3  |  ESA   | UNSA
                3  |  GFZ   | 8 MAW1
                3  |  JPL   | 8 15 25
                3  |  MIT   | MAW1 HARB MAW1 MDVJ
                4  |  COD   | MAS1 MAS1
                4  |  EMR   | 8 10 8 10
                4  |  ESA   | DAV1 UNSA
                4  |  GFZ   | 8 10 MAS1 MDVJ
                4  |  GRG   | DAV1 MAS1 WTZR
                4  |  JPL   | 8 10 25 CHPI MAS1 MAW1
                4  |  MIT   | CAS1 HARB MAW1 CAS1 MAS1
                5  |  COD   | ONSA WILL
                5  |  EMR   | 10 10 ONSA
                5  |  ESA   | 9 9 MCM4 MCM4 UNSA
                5  |  GFZ   | 8 DAV1 POVE SCH2 YAKT
                5  |  JPL   | 9 10 25
                5  |  MIT   | 9 MAW1 SCH2 MAW1 SCH2 SFER
                6  |  ESA   | KERG UNSA
                6  |  GFZ   | 8 MDVJ
                6  |  JPL   | 15 25 TIXI
                6  |  MIT   | 8 8 MAW1

 5. The following table lists all maneuvered satellites for this week.
    The solutions from COD and ESA, which modeled the maneuver, are used
    that day for combination. An associated accuracy code of 0 (unknown) 
    is given if only one AC is left (no redundancy). For the long arc  
    evaluation the arc is split into two parts at the given maneuver epoch.
    
               PRN |    Date    | Ref. NANU
               ----+------------+----------
               G11 | 2011_05_03 | 2011037 
               G11 | 2011_05_04 | 2011037 
               G23 | 2011_05_05 | 2011038 

 6. The following orbit solutions were excluded from the combination because 
    they were biasing the weighted average (generally indicated by long arc RMS).
    They were still used for statistics computation.
    
               Day | Centre | PRN list
               ----+--------+---------------
                6  |  GFZ   |  10
                6  |  GRG   |  10
                6  |  MIT   |  10

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

 8. Small rotations were applied to all the AC orbit and ERP values in order
    to align them to the IGS05 frame. These rotations were estimated in the IGS
    SINEX combination process, performed by the IGS Reference Frame Coordinator
    at the Institut Geographique National (IGN), and are based on the common
    stations between the individual AC SINEX solutions and the IGS05.snx SINEX
    frame. The estimated 7 transformations, from which only the 3 rotations are
    applied to the orbit and ERP values, are:
    
            |    DX     DY     DZ      RX     RY     RZ     SCL
     Centre |   [mm]   [mm]   [mm]   [uas]  [uas]  [uas]   [ppb]
     -------+---------------------------------------------------
       COD  |   -1.0     .4    -.1     -29    -17     -1     .32
       EMR  |   -1.1    3.0   11.5       4     13     25     .55
       ESA  |     .9   -4.2   17.0     -22     14     66     .32
       GFZ  |   -3.4     .3   -1.0     -14     39     12     .40
       GRG  |    4.3   -4.0   25.5     -10     23    -37     .29
       JPL  |   -1.1   -2.0   11.1      23    -51     47    -.63
       MIT  |    3.5   -6.5   14.4     -11      3    -16     .40
       NGS  |    5.6   -9.1    7.4     -39    -15     16     .42
       SIO  |    1.1    1.3    6.8      11    -19    -34     .49


 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 IGN). For more information see IGSMAIL #2750.
    Because of this change in alignment Table 2 has been enhanced with one 
    additional line per AC. This additional line shows the X- and Y-rotations 
    which were applied to each of the AC orbits prior to the orbit combination. 
    These rotations are based on the difference between the individual AC ERP 
    estimates and the IGS reference frame ERP product. The total rotation of
    the individual AC orbits w.r.t. the IGS combined orbit is the sum of the
    values in the two lines of Table 2 plus the reference frame rotation.

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

    
ORBIT COMBINATION AND EVALUATION STATISTICS:                                    
--------------------------------------------                                    
      
Most combination statistics are with respect to the combined orbits and
consist of five parts. The first, Table 1, summarizes all statistics for
the week.  It contains means and standard deviations over the week of
satellite ephemeris and clock correction transformation parameters for
each centre (table 1.1634.a). It also displays the computed satellite
position sigmas for the combined orbits (table 1.1634.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 2.1634.[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 3.1634.[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 5.1634.0-6).

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 1634 summary.                       (May 01, 2011 - May 07, 2011)

Table 1.1634.a   GPS week: 1634   MJD: 55682.000-55688.000

         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  247|    1     0     0    28    32    14  -.27    9    8 |    -607      98     18     82
        |    0     0     1    16    11    19   .02           |     262     343
emr  107|    0     2     2   -10   -38     6   .36   18   18 |     130      71     14     99
        |    0     2     1    14    22    11   .03           |     843    1416
esa  143|   -1     0    -2    20    28    15   .29    9    9 |   -1384     162     16    118
        |    0     0     1    24    18    19   .02           |    1018    2159
gfz  193|    0     0     0   -40  -120    -2  -.18   10   10 |      30      91     22    138
        |    1     0     1    31    29     9   .05           |     262     403
grg  134|    2     0     6   -19   -50   -18   .59   15   15 |    -117     209     51    236
        |    1     1     1    17    21    16   .04           |     333     728
igr  n/a|    0     0    -3    -3     4   -27  -.03    5    5 |   -1083     101     18     94
        |    0     0     1    19    10    24   .03           |     873    1573
jpl  119|    0     2     0   -69   102    26   .46   21   19 |     555     -49     19    309
        |    1     1     1    18    18    62   .05           |     976    1518
mit  262|    0    -2     0   -23     0   -25  -.31   11   10 |    -361     486     20    144
        |    0     0     1    30    33    21   .02           |     485    1124
ngs  225|    0    -1    -2    64    36    -7  -.20   10    9 |    -632     103   2310   3871
        |    0     0     0    22    31     8   .05           |     254     334
sio  251|   -2     2     4   -58    34   -38  -.13   22   21 |     ---     ---    ---    ---
        |    1     0     1    32    37    10   .03           |     ---     ---


Table 1.1634.b   GPS week : 1634   MJD: 55682.000-55688.000   

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



Table 2: Daily transformation of each centre to the combined IGS orbit and
         clocks for each day of the week. The transformation displayed is the
         sum of a priori and estimated transformations.
         WRMS - RMS weighted by the centres SP3 header accuracy codes.
         STA  - Number of stations in the daily solutions.
   
Table 2.1634.0   GPS week: 1634   Day: 0   MJD: 55682.000                            

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  247|    1     0     0    39    21    28  -.28    8    8 |    -346    -276     18     83
        |                     10    43                       |
emr  107|    0     1     0   -26   -75     1   .40   19   19 |    -156    -233     12     93
        |                    -10    28                       |
esa  143|   -1     0    -2     4    11    21   .28    9    9 |   -1205   -2894     17    132
        |                     15    22                       |
gfz  193|    0     0     0    -6   -94   -10  -.17   14   13 |     300    -511     24    147
        |                     -6    89                       |
grg  134|    2     0     6   -27   -85   -22   .67   18   17 |     225    -796     60    224
        |                     66   108                       |
igr  n/a|    0     0    -3   -33    -9   -55  -.01    6    6 |    -858    -609     17    103
        |                     44    -4                       |
jpl  119|   -1     1     0   -65    81   -35   .55   22   20 |     894    -563     18    315
        |                     31    33                       |
mit  275|    0    -2     0   -22    23     0  -.30   11   10 |      83    -633     19    175
        |                     13   -14                       |
ngs  225|    0     0    -2    28    27   -23  -.10   10    8 |    -416    -219   2407   4001
        |                     63   -22                       |
sio  251|   -3     4     1   -40    66   -30  -.13   23   22 |     ---     ---    ---    ---
        |                    -55   -28                       |

Table 2.1634.1   GPS week: 1634   Day: 1   MJD: 55683.000                            

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  247|    0     0     0    26    42    17  -.29    8    8 |    -296    -340     17     75
        |                     40    -9                       |
emr  107|    0     4     3   -13   -33    -4   .39   19   19 |     489     440     15    104
        |                    -51    13                       |
esa  143|    0     0    -1    24    57    15   .25    8    8 |     514   -1545     15    117
        |                      9    19                       |
gfz  193|    1     0    -1   -59  -152    15  -.26   10   10 |       9     427     24    138
        |                    -25    47                       |
grg  134|    0     0     6   -15   -31   -21   .62   14   13 |     212    -133     49    220
        |                     15   -15                       |
igr  n/a|    0     0    -6    -1    -2   -35  -.06    6    5 |    -644      51     19     96
        |                      4    22                       |
jpl  119|    0     4    -2   -86   118   -23   .50   21   20 |    1114      41     22    308
        |                    -18   -25                       |
mit  275|    1    -3     0   -15   -40    -7  -.34   11   10 |     176    -394     17    138
        |                     11    -4                       |
ngs  225|    0     0    -3    66    55    -2  -.20   10   10 |    -328    -327   2213   3557
        |                     61    -9                       |
sio  251|   -3     2     2   -37   -14   -39  -.15   21   20 |     ---     ---    ---    ---
        |                    -43   -12                       |

Table 2.1634.2   GPS week: 1634   Day: 2   MJD: 55684.000                            

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  247|    1     0    -1    56    20    14  -.30   11    9 |    -533     360     22    104
        |                    -19    97                       |
emr  107|    0     2     4     6   -60     0   .35   19   19 |    1567   -1838     15    102
        |                    -31    51                       |
esa  143|   -2     0    -2    56    23    36   .26    8    8 |   -2136    -918     14    117
        |                     -9    36                       |
gfz  193|    0     0    -1   -78   -77    -7  -.20   11   10 |     264     -80     22    147
        |                    -26    78                       |
grg  134|    1    -1     4   -18   -71   -43   .54   17   15 |     -83     253     51    194
        |                     33    51                       |
igr  n/a|    0     0    -4    15    -3   -23  -.06    6    5 |     177   -1980     18     90
        |                     -5    45                       |
jpl  119|    1     2     1   -47    84    -6   .43   21   19 |    1962   -1938     20    325
        |                     18    39                       |
mit  275|    1    -3     1   -70    43   -16  -.32   13   11 |    -133     241     20    122
        |                     22   -18                       |
ngs  225|    0    -1    -2    82   -13   -10  -.21   11    9 |    -532     339   2502   3674
        |                    -42    53                       |
sio  251|    0     3     5  -112    83   -33  -.10   23   21 |     ---     ---    ---    ---
        |                     -7    -3                       |

Table 2.1634.3   GPS week: 1634   Day: 3   MJD: 55685.000                            

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  247|    2     0    -1    13    28     7  -.23   10    8 |    -654     290     18     83
        |                     58    12                       |
emr  107|   -1     6     5   -23   -39    22   .37   19   19 |    -948    2381     15    109
        |                    -53     7                       |
esa  143|   -1     0     0    -1    51    38   .31   10   10 |   -2690    3531     12    107
        |                     18    -7                       |
gfz  193|    0     0    -1   -10  -103    -3  -.16    9    8 |    -112     437     24    150
        |                     33    51                       |
grg  134|    0     0     8   -41   -34    -1   .57   15   14 |    -699    1498     48    228
        |                     75   -22                       |
igr  n/a|    0     0    -2   -14    20   -42   .02    5    5 |   -2529    2622     17     83
        |                     15    39                       |
jpl  119|    1     2    -2   -97   104   -21   .43   21   19 |    -749    2552     19    314
        |                     -2     8                       |
mit  275|    0    -2     0    14   -12   -29  -.28    9    8 |    -785     992     20    145
        |                     -6   -11                       |
ngs  225|    0    -2    -2    67    33     2  -.21   10    8 |    -687     275   2614   3846
        |                     32    59                       |
sio  251|   -1     1     3   -30    40   -55  -.11   21   21 |     ---     ---    ---    ---
        |                    -38    -9                       |

Table 2.1634.4   GPS week: 1634   Day: 4   MJD: 55686.000                            

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  247|    0     1     0    33    26    13  -.28    8    8 |   -1086     531     18     82
        |                    -18    27                       |
emr  107|    0     1     2    12   -18    -3   .31   18   18 |     173     201     14     99
        |                    -70     2                       |
esa  143|   -1     0    -4    41     9    -5   .32    8    8 |   -1847    1850     20    113
        |                      2     7                       |
gfz  193|    0    -2     0   -65  -153     1  -.12   10    9 |    -424     605     21    124
        |                     12    82                       |
grg  134|    1     1     8    -3   -59     4   .56   15   16 |    -254     581     54    284
        |                     24     1                       |
igr  n/a|    0     0    -2   -15     4    19  -.01    5    4 |   -1197     341     20     99
        |                     10    61                       |
jpl  119|    0     2     1   -69    85    66   .42   19   18 |     531     155     19    299
        |                     -8    60                       |
mit  275|    0    -2     2   -56    33   -30  -.31   10    9 |   -1167    2731     22    131
        |                      4   -19                       |
ngs  225|    1    -2    -2    98    60     0  -.25   11    9 |   -1115     550   2121   4071
        |                     34    36                       |
sio  251|   -2     2     6   -96    57   -37  -.13   20   19 |     ---     ---    ---    ---
        |                    -20    14                       |

Table 2.1634.5   GPS week: 1634   Day: 5   MJD: 55687.000                            

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  247|    1     0     0     4    45    42  -.28    8    7 |    -630    -140     18     76
        |                     50   -15                       |
emr  107|   -2     1     0   -13   -30    10   .37   17   17 |     491   -1373     16     97
        |                    -48   -12                       |
esa  143|    0     0    -3    32    24   -11   .28    9    9 |   -1231     731     21    123
        |                     23    -5                       |
gfz  193|   -1     0     1    -4  -129   -13  -.22   10    9 |     -77    -133     23    128
        |                      4    33                       |
grg  134|    2     1     4   -35   -35   -15   .59   14   13 |      93    -275     54    253
        |                     61   -16                       |
igr  n/a|    0     0    -3     2    14   -36  -.02    5    4 |    -729   -1200     19     98
        |                     12    15                       |
jpl  119|    2     1     0   -65   113   115   .45   19   17 |     826   -1533     19    294
        |                     61     0                       |
mit  275|    0    -2     1   -17   -36   -64  -.31   11   11 |    -200      32     25    163
        |                     -5     9                       |
ngs  225|    0    -1    -2    51    80    -9  -.22   10    7 |    -648    -160   2346   4287
        |                     28   -14                       |
sio  251|   -2     1     3   -58    -4   -48  -.12   22   20 |     ---     ---    ---    ---
        |                    -23     7                       |

Table 2.1634.6   GPS week: 1634   Day: 6   MJD: 55688.000                            

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  247|    1     0     1    25    44   -20  -.25    8    7 |    -710     265     19     77
        |                     56    19                       |
emr  107|    0     1     1   -18   -12    19   .34   18   18 |    -706     921     15     92
        |                     -2   -10                       |
esa  143|   -1     0    -2   -11    23    15   .30    8    8 |   -1094     382     17    118
        |                     44   -10                       |
gfz  193|    0     0    -1   -56  -135    -1  -.16   10   10 |     251    -104     22    133
        |                     31    70                       |
grg  134|    5     0     5     7   -36   -28   .58   15   14 |    -314     340     47    251
        |                     18    -6                       |
igr  n/a|    0     0    -3    21     7   -18  -.03    5    5 |   -1802    1485     19     92
        |                     36    23                       |
jpl  119|    0     3     0   -50   129    93   .49   21   19 |    -688     943     20    314
        |                     30  -149                       |
mit  275|    1    -2     1     2   -10   -35  -.32   12   10 |    -507     437     20    139
        |                    -13    -6                       |
ngs  225|    0    -1    -3    53    13   -12  -.23   12   10 |    -699     266   1971   3662
        |                    -33   -17                       |
sio  251|   -2     2     5   -36    12   -24  -.20   23   23 |     ---     ---    ---    ---
        |                    -20     1                       |

       
       
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 3.1634.0   GPS week: 1634   Day: 0   MJD: 55682.000                            

        Weighted Average                                            Orbit Dynamics (7 days)
 PRN  |  cod  emr  esa  gfz  grg  igr  jpl  mit  ngs  sio  IGS |   cod  emr  esa  gfz  grg  igr  jpl  mit  ngs  sio   IGS
------+--------------------------------------------------------+---------------------------------------------------------
  X1  |   19  ---  ---  ---  ---   42  ---   33  ---  ---   25 |    38  ---  ---  ---  ---   44  ---   12  ---  ---    25
   2  |    8   22   11   14   19    6   25    9   11   26    5 |    27   34   27   24   30   29   34   25   26   34    24
   3  |    9   16   11   12   16    5   16   10    9   23    4 |    31   41   38   40   43   36   35   36   40   34    36
   4  |    7   11    9   13   20    5   12   11   11   13    4 |    23   26   30   30   27   25   26   30   29   39    27
   5  |    8   22    9   11   24    5   23   13   13   26    5 |    20   25   21   21   31   20   22   21   24   21    19
   6  |    8   15   10   13   16    6   15   11    9   23    4 |    20   29   30   29   33   26   26   23   26   25    24
   7E |    7   15   12   16   21    4   16   17   12   15    5 |    27   30   31   29   37   28   29   37   25   36    28
   8E |   10   19   10    8   16    7   17   16   10   22    4 |    60   62   61   62   63   58   60   67   60   64    61
   9  |    8   20    9   13   15    4   20   10   10   15    4 |    22   33   24   27   27   23   29   23   25   24    22
  10  |    9   17    9   12   19    9   14   13    9   20    4 |    49   40   34   37   43   51   37   35   37   34    47
  11  |    4   18    9    8   17    6   20    7    6   17    3 |     9   22   12    7    7    9   18   10   10   12     9
  12  |    8   23   12    9   21    5   27   14   11   22    5 |    17   32   20   19   26   18   32   24   20   21    17
  13  |    8   25    9   33   21    8   24   11   12   23    6 |    22   34   26   30   34   23   32   28   23   22    22
  14  |    9   25    9   18   13    7   27   10   10   20    5 |    25   33   35   37   34   34   29   30   36   28    29
  15  |    5   23   12   17   17    5   28   10   15   35    5 |    18   28   26   21   30   23   29   19   27   29    19
  16  |    7   21   10   14   18    5   26   12    8   19    4 |    22   32   26   24   30   24   34   25   24   21    22
  17  |    4   10    8   11   14    6   17   10    9   21    3 |    27   28   29   33   29   28   26   30   28   27    27
  18  |    9   24    8   19   17    8   31   13   12   24    5 |    44   48   45   48   45   45   49   47   44   49    43
  19  |    8   19    8   12   13    6   19    9    8   30    4 |    26   29   30   30   31   28   31   29   30   30    27
  20E |   10   23    8   10   21    8   19    9   10   21    4 |    15   25   23   19   25   20   23   18   23   22    18
  21  |    7   23    8   14   18    5   25   11   10   21    4 |    32   35   26   29   26   29   34   31   32   35    28
  22  |    7   22   10   12   20    3   32   14   10   20    5 |    58   61   60   61   60   58   61   64   55   57    57
  23  |    6   19   10   12   20    8   23   13    9   34    5 |    12   25   13   18   21   14   26   16   12   27    13
  24  |    5   13   10    9   16    5   13    9    8   15    3 |    16   23   23   16   18   18   22   17   22   23    17
  25  |    8   18    8   11   17    5   23   12    9   14    4 |    15   30   21   17   29   18   40   14   17   18    17
  26  |    7   15   10   12   11    5   15    8   14   19    4 |    15   17   22   17   22   16   20   14   22   22    15
  27  |    8   22    9   13   15    6   22    8   11   18    4 |    23   29   26   25   25   22   24   22   23   26    22
  28  |    9   22   11   14   17    6   23   10    9   15    4 |    17   26   20   21   27   18   27   19   19   18    16
  29  |    9   15    7   12   19    5   19   10   11   38    5 |    26   26   26   28   27   25   30   27   25   28    24
  30  |    8   16    7   13   13    4   16   10    8   33    4 |    19   29   23   23   28   21   26   20   21   31    20
  31E |    9   24    7   13   19    5   26   11    7   16    4 |    34   34   31   32   37   31   33   32   30   29    30
  32  |    8   15    7   10   19    6   19    7    9   17    4 |    22   26   28   23   10   25   30   25   27   30    25
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |    8   19    9   14   18    6   22   11   10   23      |T   25   32   28   28   30   27   31   27   27   29    25
 WRMS |    8   19    9   13   17    6   20   10    8   22      |NE  20   29   23   24   27   22   28   22   23   25    20
 MEDI |    8   19    9   12   17    5   20   10   10   21      |MD  22   29   26   27   29   25   29   25   25   28    24

Table 3.1634.1   GPS week: 1634   Day: 1   MJD: 55683.000                            

        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  |    5  ---  ---  ---  ---  105  ---  ---  ---  ---    0 |    27  ---  ---  ---  ---   90  ---  ---  ---  ---    23
   2  |    9   24    9   13   15    6   24    9   10   24    4 |    21   33   21   21   29   22   30   21   22   30    19
   3  |    7   12    7    8   14    5   11    9    9   23    3 |    33   35   35   29   33   31   33   35   33   34    32
   4  |   10   13    6   10   11    5   10   10   11   12    3 |    20   24   18   23   22   18   22   21   17   24    18
   5  |   14   26    8   11   13    6   26    9    9   19    5 |    19   34   23   26   26   23   31   23   28   34    22
   6  |    5   11    7    9   13    4    9    8    6   20    3 |    16   22   18   14   22   15   19   15   15   17    15
   7E |    6   16    9   14   15    5   23   19   12   15    5 |    44   45   44   50   52   41   44   45   41   42    43
   8E |   11   19   10    9   18    6   20   16   13   20    5 |    45   46   46   49   47   48   43   51   53   47    45
   9  |    8   20    8   10   12    6   20    9    7   12    4 |    22   30   30   26   29   22   31   23   26   26    25
  10  |    9   17    6   12    9    6   14   12   11   18    4 |    51   41   39   42   42   52   44   34   40   43    51
  11  |    5   15    8    7   19    4   20    6    7   15    3 |     9   19    9    8    8   10   20   10    9   10     9
  12  |   10   24   10    8   16    9   30   13   13   20    5 |    18   32   27   20   27   19   31   21   25   22    20
  13  |    8   19    8    9   15    5   22   12   12   24    4 |    15   27   15   16   29   14   29   16   19   20    13
  14  |   10   21    9   12    9    5   26   12    9   20    4 |    16   29   25   27   25   22   28   24   23   23    20
  15  |    7   27    7   14   19    8   27   11    9   35    5 |    18   30   22   17   30   20   31   17   22   31    18
  16  |    7   20    8   10   14    6   26   10   11   18    4 |    26   36   33   32   37   29   39   31   28   32    29
  17  |    8   12    9   10    9    7   19   10   13   21    4 |    16   22   20   26   15   18   21   19   21   23    16
  18  |   14   25    9   12   17    6   27   14    8   22    5 |    31   43   31   36   34   33   39   33   31   40    31
  19  |    7   15    6    9   10    5   20    8   11   29    4 |    17   26   23   21   22   20   27   20   19   17    18
  20E |    8   15    9    8   17    5   20   13   11   22    4 |    14   25   21   22   30   16   24   19   15   19    17
  21  |    6   25    7   10   15    3   25   10   10   22    4 |    21   30   22   24   17   21   27   22   22   27    18
  22  |   10   24   11   10   17    5   26   15   10   19    5 |    55   61   55   62   58   58   62   56   55   58    55
  23  |    6   18    5   11   13    4   24   11    8   32    4 |     9   23   14   16   19   10   26   14   10   25     9
  24  |    6   14    7    8   11    4   13    9   10   13    3 |    14   24   21   18   22   18   22   20   18   21    17
  25  |    8   16    8   10   12    6   25   11    9   18    4 |    12   23   22   18   27   13   38   10   14   21    14
  26  |    6   15    7    8    9    6   15    9    9   18    3 |    12   18   13   12   16   11   20   11   16   19    10
  27  |    7   19    8    9   12    6   19    9    6   15    3 |    18   25   27   20   25   18   23   19   21   22    20
  28  |    8   19    7   11   14    7   26    9   11   15    4 |    14   25   17   14   25   13   28   11   17   11    11
  29  |    7   14    7   10   14    5   18   11   11   36    4 |    16   20   19   20   15   15   22   18   17   25    15
  30  |    5   12    6    9    9    5   16   14    9   29    4 |    15   23   17   14   22   14   24   16   19   29    15
  31E |   10   20    8   12   11    6   20   12   11   12    4 |    28   34   35   35   34   29   30   31   35   30    30
  32  |    9   16    7    9   13    4   19    7   11   16    4 |    19   28   23   22   12   23   32   21   27   24    21
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |    8   19    8   10   14    6   21   11   10   21      |T   22   30   25   25   27   25   30   23   24   27    22
 WRMS |    8   19    8   10   13    5   20   10   10   20      |NE  16   26   21   19   24   17   27   17   20   22    16
 MEDI |    8   18    8   10   13    5   20   10   10   20      |MD  18   28   22   22   26   20   29   21   22   25    18

Table 3.1634.2   GPS week: 1634   Day: 2   MJD: 55684.000                            

        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
------+--------------------------------------------------------+---------------------------------------------------------
  X1M |   32  ---  ---  ---  ---   28  ---   23   27  ---   20 |    46  ---  ---  ---  ---   55  ---   18    6  ---    32
   2M |   11   22    9   15   18    6   26   15   10   32    5 |    23   31   22   18   32   24   33   23   24   28    20
   3M |    6   11    7    7   12    6   13   15    9   21    3 |    32   36   31   38   33   32   33   34   34   33    32
   4M |   12   17   11   11   11    5   17   27   13   34    6 |    34   39   39   35   34   34   36   46   36   54    35
   5E |    9   21    9   14   19    5   24    8   11   14    5 |    31   35   33   30   35   27   33   29   23   23    28
   6M |    6   12    6    6    9    5   13    8   11   22    3 |    17   25   22   20   24   18   23   18   16   19    18
   7E |   26   16   10   13   14    7   17   22   12   21    6 |    72   78   82   84   81   73   79   69   78   86    75
   8E |   14   21    9   11   20    4   18   17   10   21    5 |    45   44   46   47   46   43   39   48   48   41    44
   9  |   10   20    7   10   11    5   17    9   10   13    4 |    16   29   18   19   20   15   26   16   18   20    16
  10  |   10   15    7   14   10    4   14   15    7   24    4 |    51   47   45   56   53   55   45   57   47   43    56
 X11M |    6  ---  ---  ---  --- 1055  ---  ---  ---  ---    0 |    21  ---  ---  ---  --- 9999  ---  ---  ---  ---    23
  12  |    9   23   12   10   19    4   26   13   12   19    5 |    14   29   19   18   29   14   27   17   16   16    16
  13  |    8   20   10   11   18    7   25   12    8   21    4 |    17   30   25   20   34   19   30   22   18   19    20
  14  |   11   23    9   12   14    6   26   14   16   20    5 |    24   30   31   30   31   28   28   26   32   21    26
  15  |    6   26    7   14   17    6   27    9   11   32    5 |    18   29   21   19   30   17   29   16   18   25    17
  16M |    9   21    9   12   48    7   26   18   11   31    7 |    36   44   39   36   64   38   45   40   37   39    37
  17M |    9   13    8   12   10    4   14   11   12   23    4 |    18   25   22   26   19   20   22   25   20   25    20
  18E |   18   25    7   14   17    7   29   16    9   19    5 |    74   79   81   74   77   73   78   78   76   76    75
  19M |   10   15    7   10   15    5   17    7   12   27    4 |    21   27   26   25   25   24   28   24   26   23    23
  20E |    9   17    8    9   14    6   18   10    7    9    4 |    16   29   29   22   26   22   26   20   19   23    22
  21  |    7   24    7   10   15    4   22    9   10   19    4 |    26   32   23   23   19   24   29   25   28   28    23
  22E |   16   21    6    8   20    8   29   18    9   18    5 |   127  128  134  124  125  125  127  129  122  126   126
  23  |    6   20    9    8   16    6   24    9    8   33    4 |    15   28   21   17   23   20   27   19   14   24    19
  24M |    8   16    5    7   11    5   11    8   11   17    3 |    20   30   24   18   23   21   24   23   27   29    23
  25M |    9   15    6   10   13    3   20    9   13   15    4 |    15   24   18   17   30   16   35   11   15   15    16
  26  |    8   19    8    6   11    4   13    7    8   21    3 |    15   25   18   12   21   16   18   15   17   32    17
 X27  |    8   22    6   11   12    7  ---    8   11   16    4 |    17   29   19   19   22   16  ---   17   19   22    17
  28  |    9   19    9    8   16    3   19    8   12   17    4 |    16   29   19   16   26   16   24   15   21   15    15
  29M |   13   12    8   12   13    6   21    9   12   36    5 |    25   20   25   26   21   21   24   23   21   32    23
  30M |    7   13    8    7   10    5   11    8    6   34    4 |    21   28   24   19   28   22   25   21   22   35    23
  31E |    9   22   10   11   13    6   21   12   12   15    4 |    64   61   62   67   66   60   59   60   58   58    60
  32  |   10   17    6    9   16    6   20    7    8   12    4 |    20   33   30   25   14   25   34   23   23   27    25
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |   11   19    8   11   17    6   21   13   11   23      |T   31   38   34   33   37   32   37   32   31   35    31
 WRMS |    9   19    8   10   15    5   19   11    9   21      |NE  17   29   21   19   25   18   26   18   20   22    18
 MEDI |    9   19    8   10   14    6   20   10   11   21      |MD  21   30   25   23   29   24   29   23   23   27    23

Table 3.1634.3   GPS week: 1634   Day: 3   MJD: 55685.000                            

        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  |    4  ---  ---  ---  ---  105  ---  ---  ---  ---    0 |    29  ---  ---  ---  ---  111  ---  ---  ---  ---    30
   2  |    9   21    7   10   17    5   26    7    7   25    4 |    21   32   21   21   28   21   32   22   20   29    21
   3  |    6   12   12    7   12    5   11    8   10   22    3 |    19   31   27   23   30   21   23   22   23   19    22
   4  |    8   12    8    8   11    4   12    8    8   14    3 |    25   31   30   24   28   26   29   27   24   36    26
   5E |    8   22   12   12   14    4   30    6   14   17    5 |    21   36   27   25   34   22   32   26   23   30    24
   6  |    5   12   12    8    9    5   13    7   10   18    3 |    21   31   29   21   31   23   23   23   26   19    23
   7  |   16   14   11   11   14    6   18    8   10   22    4 |    58   65   67   69   69   64   65   62   66   63    64
   8E |   17   24   10   10   15    5   19   10    9   22    5 |    49   57   56   55   58   56   54   58   57   57    54
   9  |    8   21   10    8    8    4   20    9    9   11    4 |    21   35   26   25   28   23   31   24   24   25    23
  10E |   23   23    9   12   19    6   16   11   13   20    5 |    53   46   41   46   43   49   46   45   43   37    46
 X11  |    4  ---  ---  ---  ---    8  ---  ---  ---  ---    0 |    10  ---  ---  ---  ---  176  ---  ---  ---  ---    10
  12  |   12   24   12    7   17    4   28    9   10   19    5 |    20   35   25   24   31   21   33   22   21   23    22
  13  |    5   18   12    8   21    6   22    7    8   17    4 |    23   33   29   22   36   22   31   27   24   20    24
  14  |   10   22   11   13   12    5   25    9   10   19    4 |    22   31   31   33   30   26   28   28   33   21    26
  15  |    6   27   13   14   17    6   28    8   12   30    5 |    21   36   27   24   32   23   36   24   23   29    22
  16  |    7   20    9    9   15    5   27    9   10   21    4 |    21   30   25   18   31   22   32   21   25   20    21
  17  |    9   13    9    8   11    6   17   13    5   25    4 |    26   31   28   28   28   27   28   30   25   29    26
  18E |    8   24    8   12   19    5   26    8   10   17    4 |    44   56   49   48   50   47   54   48   49   53    47
  19  |    7   12   12    7   12    6   16    9    9   28    4 |    24   31   32   27   32   28   28   27   31   25    27
  20E |    7   17   10    8   14    6   19   10    8    9    3 |    22   30   28   26   29   25   29   28   26   28    25
  21  |    7   23   10    9   15    4   23    6    5   20    4 |    25   31   21   26   23   22   30   24   22   27    22
  22E |    8   21    9    6   17    4   25    9   12   15    4 |    64   76   66   66   69   68   74   68   69   72    67
  23  |    7   19   11    9   17    5   23    8   10   32    4 |    15   27   18   17   22   13   28   18   14   28    15
  24  |    9   14   11    6   12    4   12    9    8   14    3 |    17   25   22   20   24   18   22   21   21   24    19
  25  |    9   17    9    6   13    3   22    7    8   14    3 |    17   32   24   19   32   20   39   19   21   25    21
  26  |    6   14   11    6   12    5   15    8   12   21    4 |    19   23   22   18   23   18   24   16   24   26    18
  27  |    9   20    9    8    9    4   19    7   11   13    4 |    19   33   24   23   28   22   22   22   22   25    21
  28  |    8   21   12   11   16    4   25    8    7   16    4 |    17   30   19   20   27   16   28   17   19   18    16
  29  |    8   12    7    6   14    4   23    8    6   36    4 |    20   24   24   24   24   21   27   23   25   27    21
  30  |    7   12    6    7   12    5   13   12   11   29    4 |    25   31   25   24   31   24   30   25   24   34    24
  31  |    9   25    9   10   23    6   19   10   12   17    5 |    44   44   42   43   49   40   41   43   42   38    41
 X32  |   10   15   12    6  ---    7   18    6   11   16    4 |    23   32   28   25  ---   24   34   24   31   29    26
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |   10   19   10    9   15    5   21    9   10   21      |T   26   36   31   29   34   35   34   29   29   31    27
 WRMS |    8   19   10    8   14    5   19    8    8   21      |NE  20   31   24   23   28   20   29   22   22   24    20
 MEDI |    8   19   10    8   14    5   19    8   10   19      |MD  21   31   27   24   31   23   30   24   24   27    23

Table 3.1634.4   GPS week: 1634   Day: 4   MJD: 55686.000                            

        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  |    5  ---  ---  ---  ---   47  ---  ---  ---  ---    0 |    31  ---  ---  ---  ---   37  ---  ---  ---  ---    32
   2  |   10   22    7   18   16    5   24    7   10   27    5 |    19   31   19   20   25   21   30   15   19   29    17
   3  |    5   11    5    7   11    3   10    7   10   21    3 |    16   22   21   21   26   18   18   19   21   17    18
   4  |    8   13    6   10   13    5   13    7   13   15    3 |    22   26   25   24   29   21   28   23   24   27    24
   5E |    7   21    6    9   16    6   20   10   11   14    4 |    18   29   22   24   30   20   27   18   17   26    20
   6  |    5    9    6    7   10    3    9    7   10   16    3 |    14   23   23   18   25   18   20   20   18   12    17
   7  |    9   17   13   10   20    7   18   10    9   19    4 |    35   39   42   41   46   37   38   33   37   29    36
   8E |   18   24   13   12   17    6   20    9    9   21    5 |    36   43   37   42   39   39   42   46   44   38    38
   9  |   10   17    7    6   10    3   19   12   10   12    4 |    15   27   18   16   22   17   28   18   19   20    16
  10E |   14   20    9   12   17    7   18   15   15   20    5 |    53   41   32   61   61   54   42   69   38   39    52
  11  |    5   18    7    9   18    6   19    8   14   19    4 |    10   21   11   12   17   96   17   11   16   17    12
  12  |    7   22    8   10   17    4   23   13    9   19    4 |    19   32   25   22   27   21   33   23   23   21    21
  13  |    5   19    9    8   23    4   23    8   11   17    4 |    19   30   24   23   34   20   30   24   23   14    21
  14  |    6   25    6    9   13    4   26   10   11   16    4 |    19   32   26   25   30   21   30   24   20   22    21
  15  |    5   23   10   11   17    4   24   15   10   28    5 |    21   34   27   26   33   23   34   23   23   25    22
  16  |    5   20    6    8   14    3   23    6    9   26    4 |    17   31   24   22   32   21   33   20   21   17    20
  17  |   10   10    7   11   10    6   14   17   10   29    4 |    21   25   24   24   24   23   24   29   24   34    22
  18E |    8   20    6    8   18    3   26    8   11   15    4 |    26   36   30   30   34   31   38   30   34   35    29
  19  |    6   12    7    9   14    4   14   10    8   28    4 |    22   24   28   26   26   23   27   22   26   18    22
  20E |    8   20   12   13   15    4   20    9   13   12    4 |    30   36   40   33   33   30   36   33   38   34    34
  21  |    8   22    9    7   15    3   21    6    9   20    4 |    26   30   25   21   18   24   31   24   26   27    22
  22E |    7   19    6    8   14    4   26   10    8   12    4 |    39   45   38   40   42   41   47   40   40   42    39
 X23  |    5  ---  ---  ---  ---   30  ---  ---  ---  ---    0 |    13  ---  ---  ---  ---   50  ---  ---  ---  ---    14
  24  |    7   14    9    9   11    4   11    6   14   16    3 |    14   19   19   18   16   15   18   18   20   19    15
  25  |    9   19    6    8   13    4   23    9   12   14    4 |    15   31   21   21   29   19   40   16   19   23    18
  26  |    6   10    7    7   14    5   11    9   11   20    3 |    12   15   19   16   20   17   20   16   21   24    16
  27  |   10   16    7    6   12    3   16   11    9   14    3 |    15   25   21   17   24   19   22   17   22   23    17
  28  |    8   18   12   10   19    5   21    8   11   16    4 |    14   24   20   18   27   18   28   17   18   19    15
  29  |    8   11    8    8   14    5   16    9    8   36    4 |    15   18   19   17   20   18   20   17   21   23    14
  30  |    7   12    6   10    8    2   10    8    9   28    3 |    17   26   19   17   24   16   24   20   17   30    18
  31  |    8   25    7   13   22    5   20   18   11   11    5 |    39   46   44   42   48   41   45   46   45   43    41
 X32  |   10   16    7   13  ---    4   17    6   10   17    4 |    23   32   30   31  ---   25   32   25   29   28    27
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |    8   18    8   10   15    5   19   10   11   20      |T   22   29   25   25   29   27   30   25   25   25    23
 WRMS |    8   18    8    9   16    4   18    9    9   19      |NE  17   27   22   20   26   23   28   20   21   21    18
 MEDI |    7   18    7    9   14    4   19    9   10   17      |MD  19   30   24   22   27   21   30   22   22   24    21

Table 3.1634.5   GPS week: 1634   Day: 5   MJD: 55687.000                            

        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  |    5  ---  ---  ---  ---   92  ---  ---  ---  ---    0 |    38  ---  ---  ---  ---   48  ---  ---  ---  ---    40
   2  |    7   19    8   11   16    5   21   12   12   25    4 |    19   34   26   24   33   24   32   21   21   25    22
   3  |    7   10    7    8    9    3   10    9   13   21    3 |    11   19   17   14   17   14   17   15   18   13    13
   4  |    8   12    7    9   12    5   11   10   10   13    3 |    14   24   19   17   20   16   20   19   16   22    16
   5E |    7   21    7   11   10    4   21    8   11   18    4 |    10   26   16   16   21   12   20   12   14   20    11
   6  |    5    9    7    8    9    3   10   10   11   17    3 |    13   20   20   15   20   15   19   17   18   13    15
   7  |    7   14   13   10   17    5   13   11    8   17    4 |    26   28   27   28   36   24   26   22   22   27    24
   8E |   18   24   15   15   15    8   20   15    9   24    6 |    49   51   49   52   49   46   47   47   54   47    47
   9  |   10   19    9    8   11    5   19   16   12   12    4 |    19   30   22   22   27   21   29   20   26   25    21
  10E |   13   17   10   11   16    4   14   13   11   28    5 |    56   38   35   70   64   65   36   75   36   35    62
  11  |    8   16   11    7   16    5   16    8    9   16    4 |     9   21   13   11    9   78   20   12   15   16    13
  12  |    7   23    9    8   17    5   28    9   12   20    4 |    18   33   25   24   32   22   33   24   25   21    23
  13  |    5   18    8   19   18    6   22   11   11   19    5 |    14   30   19   27   33   18   29   21   17   13    17
  14  |    6   21    6   11   12    4   27   12    8   17    4 |    23   31   27   28   31   24   31   24   24   22    23
  15  |    5   20   10   11   16    2   26    9    9   32    5 |    17   27   22   19   29   18   29   19   17   30    18
  16  |    6   20    9    8   13    4   24    8    9   26    4 |    14   33   24   17   30   19   31   18   19   16    18
  17  |   10   13   10    9   13    5   12   19   12   28    4 |    14   23   23   22   19   19   19   27   17   32    17
  18E |   10   21    7   10    9    4   25   11    9   19    4 |    16   29   20   20   21   17   26   20   19   25    17
  19  |    6   12    8    5   12    5   18   10   12   27    4 |    20   28   34   24   25   26   28   23   28   32    24
  20E |    6   18   10   10   16    6   19   13    8   12    4 |    20   29   30   26   26   23   30   19   24   24    23
  21  |    8   21    9    9   15    2   23    8    8   19    4 |    19   28   16   18   17   17   26   20   23   26    17
  22E |    8   16    8    7   14    5   24   13    5   13    4 |    18   27   24   20   22   20   29   20   22   22    20
 X23  |    6  ---   10  ---  ---    7  ---    9  ---   33    7 |    13  ---   10  ---  ---   13  ---   12  ---   13    14
  24  |    6   12   11    7   11    4    7    9    9   15    3 |     9   18   19   16   14   14   17   17   16   20    13
  25  |    8   16    8    5   12    3   20   10   12   20    4 |     9   28   20   12   26   13   34   12   11   20    13
  26  |    6   11    9    9   11    2   14   11    8   23    3 |     9   17   17   17   17   13   16   15   16   26    12
 X27  |   10   21    6    7   13    4  ---   12    9   17    4 |    16   27   20   19   25   17  ---   16   22   26    17
  28  |    7   16   14   11   16    6   20   11    6   17    4 |    13   24   18   17   25   15   25   18   14   18    13
  29  |    7   12    7    8   13    4   16   10   15   39    4 |    28   31   33   34   33   30   29   29   34   41    31
  30  |    7   13    6    7    7    3   13    9    7   27    3 |    16   25   16   13   19   14   24   13   13   31    15
  31  |    9   27    6    8   20    5   22   13   11   14    5 |    34   47   35   35   45   34   37   37   38   33    35
 X32  |   16   19    7   12  ---    5   16    8    8   20    5 |    45   52   49   44  ---   45   48   47   44   50    45
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |    8   17    9   10   14    5   19   11   10   22      |T   20   29   24   24   27   24   27   22   22   25    22
 WRMS |    7   17    9    9   13    4   17   11    7   20      |NE  16   27   19   21   26   17   27   18   20   22    17
 MEDI |    7   17    8    9   13    5   19   10    9   19      |MD  16   28   22   20   25   19   29   20   19   25    17

Table 3.1634.6   GPS week: 1634   Day: 6   MJD: 55688.000                            

        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
------+--------------------------------------------------------+---------------------------------------------------------
   2  |    7   20    6   12   16    4   27   11    8   26    4 |    22   34   25   20   34   23   38   21   24   25    22
   3  |    5   12    4    7   11    4    9    9    7   24    3 |    18   24   21   20   27   19   22   20   18   20    19
   4  |    9   11    8   10   13    5   14    7   10   12    3 |    24   29   28   30   30   25   34   31   28   35    27
   5E |    6   17    8   14   13    5   23    9   14   21    4 |    17   26   19   26   23   18   27   21   22   39    19
   6  |    6   10    6    9   10    5   10   16    8   17    3 |    23   27   27   26   31   23   27   26   22   19    23
   7  |    6   14   11   10   19    5   17   15   12   16    4 |    38   43   42   45   50   41   43   40   35   38    40
   8E |   21   26   12   14   16    5   20   22   15   26    6 |    60   65   67   69   67   67   64   75   74   68    65
   9  |    8   18    7    9   11    4   20   16   13   16    4 |    21   29   24   24   28   23   32   23   24   28    22
 X10E |    5  ---  ---  148  114   35  ---  235  ---  ---    0 |   147  ---  ---   81  114  159  ---   62  ---  ---   147
  11  |    6   15    9    9   16    5   18    8   13   16    4 |    13   19    9   10   16   85   22   10   12   13    13
  12  |    7   23    7    9   17    4   33    8   14   21    5 |    26   38   29   29   38   26   38   27   27   30    28
  13  |    6   19   10   10   19    6   25    9    7   18    4 |    21   35   28   26   40   23   33   24   22   19    24
  14  |    7   20    6   12   15    4   24   12   12   18    4 |    26   33   33   34   35   27   31   32   25   25    28
  15  |    6   22    8   10   19    5   28   11    9   27    5 |    20   31   27   23   30   21   34   22   20   26    21
  16  |    5   21    5    8   13    5   23    9   17   38    5 |    21   30   24   20   32   23   33   21   24   28    21
  17  |   10   12    6    9   10    5   15   22   17   33    5 |    26   29   30   32   28   28   29   37   30   37    28
  18E |   10   20    9    9   23    3   26   11   12   17    5 |    39   46   44   40   46   41   49   38   41   50    40
  19  |    4   12    7    7   12    5   14    9   12   28    3 |    30   32   35   32   34   32   37   31   35   35    32
  20E |    7   21    8    8   11    8   22   12    6   13    4 |    27   36   31   32   33   26   33   36   30   35    30
  21  |    7   21    8   11   17    3   24    7   12   20    4 |    25   31   24   21   25   23   32   22   20   26    21
  22E |    7   15    6    6   16    4   23   13    9   15    4 |    44   51   45   46   46   46   53   44   44   53    45
  23  |    6   18    8   11   17    7   24    7    9   32    4 |    10   22   12   12    4   11   22   13    4   14    10
  24  |    5   12    7   11   12    4    9   11   13   17    3 |    17   22   18   14   21   17   24   17   22   23    16
  25  |    8   18    7    8   15    4   27   11   11   17    4 |    18   36   26   24   32   22   46   19   23   25    23
  26  |    7   12    7    7   14    3   11   10   11   25    3 |    17   19   20   17   23   18   23   16   25   27    17
 X27  |    9   20    6    7   13    5  ---   14   12   22    4 |    20   27   25   22   26   22  ---   23   22   31    22
  28  |    6   18    8    9   18    5   20   18   11   18    4 |    16   26   21   19   28   18   27   24   18   21    17
  29  |    6   13    8   12   16    7   20    9   12   37    4 |    22   27   27   31   27   26   26   27   27   35    25
  30  |    6   13    5    8   10    3   13    7   12   32    3 |    24   27   23   21   27   23   27   19   22   35    22
  31  |    8   24   10   12   20    5   24    7   12   22    5 |    44   44   43   45   53   43   44   46   42   45    43
 X32E |   11   18   10   11  ---   11   18   19   10   36    5 |    47   55   53   53  ---   46   53   52   49   47    49
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |    8   18    8   10   15    5   21   12   12   23      |T   29   33   29   30   34   33   34   29   27   31    30
 WRMS |    7   18    8   10   14    5   19   10   10   23      |NE  20   29   24   22   27   21   30   22   20   24    21
 MEDI |    7   18    7    9   15    5   20   11   12   21      |MD  23   30   27   26   30   23   33   24   24   28    23



Table 4: Precise Navigation Summary.

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

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

Table 4.1634   GPS week: 1634   MJD: 55682.0-55688.0

CENT| CLK EPO  |        BRUS       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3012 |U    9     9    21 |U    8     9    29 |U   14     9    19 |
emr | emr 2903 |U   10     8    25 |U    9    11    31 |U   16    10    19 |
esa | esa 2921 |     7     7    20 |U    7     9    26 |    13     9    19 |
gfz | gfz 2910 |U    7     8    20 |U    8    11    30 |U   14     9    17 |
grg | grg 2860 |     8     9    22 |U    8     9    32 |    15    10    21 |
igr | igr 2931 |     7     8    20 |     7     9    26 |    14     9    18 |
igs | igs 2922 |     7     8    20 |     7     9    25 |    13     9    18 |
jpl | jpl 2861 |U    8     8    26 |U    8    12    31 |    14    10    20 |
mit | mit 2962 |U    8     8    18 |U    8    10    27 |U   15    10    20 |



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 5.1634.0   GPS week: 1634   Day: 0   MJD: 55682.0

CENT| CLK EPO  |        BRUS       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3028 |     9    11    19 |    11    15    45 |     5     4    16 |
emr | emr 2972 |     9     6    21 |    12    13    44 |     8     5    18 |
esa | esa 2976 |     6     8    19 |    11    15    41 |     5     5    15 |
gfz | gfz 2972 |     6     7    16 |    12    16    41 |     5     6    16 |
grg | grg 2976 |     7     8    17 |    12    15    43 |     6     6    21 |
igr | igr 2965 |     7     8    18 |    12    16    44 |     5     5    14 |
igs | igs 2971 |     6     7    18 |    11    15    41 |     6     5    15 |
jpl | jpl 2969 |     7     7    24 |    10    17    43 |     7     6    17 |
mit | mit 3072 |     8    10    18 |    11    15    48 |     6     5    21 |

Table 5.1634.1   GPS week: 1634   Day: 1   MJD: 55683.0

CENT| CLK EPO  |        BRUS       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3028 |     9     6    21 |     9     9    40 |     7     9    21 |
emr | emr 2972 |    10    10    26 |     8    10    39 |     8     6    21 |
esa | esa 2976 |     8     7    20 |     8     9    38 |     7     8    20 |
gfz | gfz 2972 |     7     9    19 |     9     8    41 |     6     9    19 |
grg | grg 2976 |     9     9    22 |     9    11    44 |     9     8    26 |
igr | igr 2958 |     8     9    20 |     9     9    43 |     7     7    17 |
igs | igs 2975 |     8     8    20 |     8     8    36 |     7     7    19 |
jpl | jpl 2969 |     9     9    27 |     9    10    44 |     9     8    17 |
mit | mit 2976 |     7     7    17 |     9     7    38 |     7     7    18 |

Table 5.1634.2   GPS week: 1634   Day: 2   MJD: 55684.0

CENT| CLK EPO  |        BRUS       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3025 |     9    12    33 |     8     8    23 |     6     8    19 |
emr | emr 2876 |    10     9    30 |     7     6    22 |     9     8    19 |
esa | esa 2880 |     7     7    25 |     7     6    20 |     6     8    17 |
gfz | gfz 2876 |     6     7    24 |     7     7    23 |     6     6    14 |
grg | grg 2879 |     7     7    26 |     7     9    25 |     8     8    17 |
igr | igr 2938 |     7     8    25 |     8     8    23 |     6     7    20 |
igs | igs 2865 |     7     8    25 |     8     7    22 |     6     7    16 |
jpl | jpl 2780 |     9     8    31 |     7     9    24 |     7     7    15 |
mit | mit 2976 |    13    10    20 |     9     8    22 |     8     8    17 |

Table 5.1634.3   GPS week: 1634   Day: 3   MJD: 55685.0

CENT| CLK EPO  |        BRUS       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3030 |     7     8    17 |     7     8    21 |     7    11    19 |
emr | emr 2876 |    10     8    25 |     8     7    25 |    10    11    16 |
esa | esa 2880 |     7     8    19 |     6     6    20 |     7    10    19 |
gfz | gfz 2877 |     7    10    20 |     7     5    22 |     7    11    15 |
grg | grg 2783 |     8    12    23 |     7     6    21 |     7    10    18 |
igr | igr 2858 |     7     9    20 |     6     6    18 |     7    12    17 |
igs | igs 2859 |     7     9    19 |     6     5    20 |     8    13    18 |
jpl | jpl 2876 |     8    10    28 |     7     9    27 |     7    11    20 |
mit | mit 2880 |     7     8    18 |     9     7    21 |    12    14    18 |

Table 5.1634.4   GPS week: 1634   Day: 4   MJD: 55686.0

CENT| CLK EPO  |        BRUS       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3031 |     9     7    22 |     8    10    31 |  ----  ----  ---- |
emr | emr 2872 |    10     8    25 |    12    20    31 |  ----  ----  ---- |
esa | esa 2880 |     7     6    22 |     6    10    21 |     5     6    21 |
gfz | gfz 2872 |     7     7    22 |    10    20    29 |  ----  ----  ---- |
grg | grg 2783 |     8     7    23 |     6    10    26 |  ----  ----  ---- |
igr | igr 2946 |     7     6    23 |     4     8    19 |  ----  ----  ---- |
igs | igs 2874 |     7     6    22 |     7    11    22 |     5     6    21 |
jpl | jpl 2872 |     8     8    28 |     9    20    27 |     6     7    18 |
mit | mit 2880 |     6     8    22 |     7    12    23 |  ----  ----  ---- |

Table 5.1634.5   GPS week: 1634   Day: 5   MJD: 55687.0

CENT| CLK EPO  |        BRUS       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3008 |     8    11    21 |     5     7    21 |    52    19    26 |
emr | emr 2874 |    11    13    25 |    10    14    22 |    52    19    20 |
esa | esa 2976 |     8     9    20 |     5     6    20 |    51    17    24 |
gfz | gfz 2872 |     8    12    22 |     6     7    24 |    51    17    20 |
grg | grg 2784 |     9    12    23 |     7     7    35 |    51    21    23 |
igr | igr 2973 |     8    10    20 |     4     6    15 |    51    17    23 |
igs | igs 2975 |     8    10    20 |     5     6    17 |    51    18    23 |
jpl | jpl 2778 |     9    11    26 |     6    11    28 |    53    21    24 |
mit | mit 2976 |     7    10    18 |     6     8    18 |    52    18    26 |

Table 5.1634.6   GPS week: 1634   Day: 6   MJD: 55688.0

CENT| CLK EPO  |        BRUS       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 2939 |     9     7    17 |     5     8    23 |     7     6    16 |
emr | emr 2880 |    12     7    20 |     8     7    30 |    11     8    19 |
esa | esa 2880 |     9     5    18 |     6     9    22 |     8     8    20 |
gfz | gfz 2933 |     8     6    18 |     9    10    31 |     7     6    17 |
grg | grg 2842 |     8     5    19 |     6     9    26 |     8     7    22 |
igr | igr 2880 |     8     5    17 |     5     8    23 |     7     7    18 |
igs | igs 2939 |     9     6    16 |     5     8    21 |     7     6    18 |
jpl | jpl 2784 |     8     7    20 |     6     8    26 |    10     9    24 |
mit | mit 2976 |     9     6    16 |     6    10    22 |     7     8    20 |


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 6.1634   GPS week: 1634   MJD: 55682.500-55688.500

                                                         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 |     -11     -17      90     -88     -4 |      -5     14
            |      27      29      84      70      5 |       3
emr   uuuuu |       3      46      63     -15    -10 |      44     47
            |      12      24     145      54      6 |       6
esa   uuuuu |       5      -6     -57     207     -1 |       3     15
            |      11      13      36      83      7 |       4
gfz   uuuuu |     -50       5      86     -31      1 |       4     19
            |      17      21      89      44     18 |       4
grg   uuuux |       0     -33     142    -113      1 |      -3     22
            |      41      21     180      99     24 |       3
igr   xxxxx |     -15      -8     -22     -17      2 |      -3     15
            |      20      11      67      63      7 |       3
irf   xxxxx |      14       8      -5     -36      3 |      -4     14
            |      15       9      47      44      4 |       3
jpl   uuuuu |      19      -8      59      47      1 |       8     19
            |      59      25     120      98      7 |       4
mit   uuuuu |      23       5    -133     -71      2 |       6     15
            |      23      19      65      78      7 |       3
ngs   uuuuu |       2     -12       1     -37     -2 |       6     12
            |      28      38     103     106      4 |       2
sio   uuuuu |      18      38     -44    -174      6 |      24     29
            |      21      24     120     104      7 |       3


Table 7.1634.0   GPS week: 1634   Day: 0   MJD: 55682.500

                                                         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      10      18      -8     -8 |      -3     15
emr   uuuuu |      -7      30     333     -17    -15 |      52     57
esa   uuuuu |      -1       5     -75     201     -8 |       8     20
gfz   uuuuu |     -68      26      25       1     20 |       2     20
grg   uuuux |     -87     -46     526    -252     29 |      -8     22
igr   xxxxx |      25     -24      78      76     -3 |      -1     18
irf   xxxxx |      21      20     -77     -30     -1 |      -3     15
jpl   uuuuu |     -12     -11     272     234     -4 |      12     25
mit   uuuuu |      35       7    -258     -33     -4 |       8     18
ngs   uuuuu |      43     -43    -104     -57      0 |       6     15
sio   uuuuu |      49      75    -221    -260     -7 |      28     33

Table 7.1634.1   GPS week: 1634   Day: 1   MJD: 55683.500

                                                         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 |      16     -36      68    -224     -9 |      -2     14
emr   uuuuu |      -6      55     116     -93    -19 |      52     56
esa   uuuuu |     -12      -5     -50     208     -6 |       8     20
gfz   uuuuu |     -40      29     -57      36     13 |       4     21
grg   uuuux |      22     -11      23     -74     28 |      -4     22
igr   xxxxx |     -15       0    -127     -78      2 |      -1     18
irf   xxxxx |       7       4     -27     -82     -2 |      -2     15
jpl   uuuuu |      32      22     132      59      0 |      12     25
mit   uuuuu |      11      -7    -124    -108     -8 |      10     18
ngs   uuuuu |      16     -57     138     -30      4 |       8     15
sio   uuuuu |      19      47     -72    -325     -2 |      27     32

Table 7.1634.2   GPS week: 1634   Day: 2   MJD: 55684.500

                                                         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 |     -59      11     210     -48    -10 |      -5     15
emr   uuuuu |     -13      23      -2     -82     -4 |      46     51
esa   uuuuu |       2       1      -8     221     -8 |       4     18
gfz   uuuuu |     -40      18      81     -15     12 |       2     20
grg   uuuux |     -13     -41     140    -241    -14 |       0     21
igr   xxxxx |      -7      -3      30     -95      9 |      -4     17
irf   xxxxx |      38      -8      22      30      5 |      -5     14
jpl   uuuuu |      -1     -26       0     -69     -8 |       7     19
mit   uuuuu |      56     -30    -112      42     -1 |       6     16
ngs   uuuuu |     -15      34     -49    -105      2 |       6     14
sio   uuuuu |      41      -1      17     -35      9 |      22     27

Table 7.1634.3   GPS week: 1634   Day: 3   MJD: 55685.500

                                                         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 |       2     -44       9    -118      0 |      -9     13
emr   uuuuu |       7      67     116       0    -12 |      40     42
esa   uuuuu |      21      -4     -68     376     -2 |      -1     10
gfz   uuuuu |     -37     -19      82     -29      9 |       0     18
grg   uuuux |      36     -61     159     -72    -26 |      -2     21
igr   xxxxx |     -25      -1      -6      -5     10 |      -7     12
irf   xxxxx |      14      14       7     -48      7 |      -8     12
jpl   uuuuu |       6      16      30     -42     -3 |       3     13
mit   uuuuu |      25      20    -144    -126      5 |       2     10
ngs   uuuuu |     -45     -18      -7     -61     -4 |       3      8
sio   uuuuu |      23      52      -3    -186     12 |      19     22

Table 7.1634.4   GPS week: 1634   Day: 4   MJD: 55686.500

                                                         AC LOD  AC LOD
CENT  FLAG  |   Xpole   Ypole     Xrt     Yrt    LOD |    BIAS  BIAS RMS
            |   [uas]   [uas]   [uas/d] [uas/d]  [us]|    [us]    [us]
------------+----------------------------------------+------------------
cod   xxxxx |      -4      21     168     -52     -4 |      -8     12
emr   uuuuu |      21      73     -48      53    -11 |      38     40
esa   uuuuu |      16       1     -92     124      7 |      -1     10
gfz   uuuuu |     -59      -9     227     -46     -1 |       4     18
grg   uuuux |      22     -21     101    -107      7 |      -3     21
igr   xxxxx |     -38      -7     -43     -51     -3 |      -6     12
irf   xxxxx |      23       3      56       3      6 |      -6     12
jpl   uuuuu |     -37      11     101      28     -1 |       5     13
mit   uuuuu |      42      -1     -97       8      3 |       3     11
ngs   uuuuu |     -13     -31    -134     -75     -7 |       3      8
sio   uuuuu |       9      23      98    -101     12 |      21     24

Table 7.1634.5   GPS week: 1634   Day: 5   MJD: 55687.500

                                                         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 |      17     -36      12     -72     -1 |      -7     13
emr   uuuuu |      14      62    -110      21     -6 |      38     39
esa   uuuuu |       7      -9     -96     136      6 |       0     14
gfz   uuuuu |     -31      10     107     -94    -20 |       8     21
grg   uuuux |      18     -47      40     -65    -28 |       1     24
igr   xxxxx |     -13       2     -75     -13      5 |      -4     14
irf   xxxxx |       2      14      31     -95      0 |      -3     15
jpl   uuuuu |       2     -47     -63      49     13 |       6     16
mit   uuuuu |      -7      19     -48    -171      3 |       5     15
ngs   uuuuu |      16     -14      79     193     -7 |       5     11
sio   uuuuu |      -5      37      57    -219      7 |      24     29

Table 7.1634.6   GPS week: 1634   Day: 6   MJD: 55688.500

                                                         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     -45     148     -90      5 |      -4     13
emr   uuuuu |       5      13      33      12     -4 |      40     41
esa   uuuuu |       5     -33     -11     185      5 |       4     16
gfz   uuuuu |     -75     -20     137     -72    -26 |      12     18
grg   uuuux |       1      -7       2      21      9 |      -2     23
igr   xxxxx |     -28     -25     -14      48     -9 |       0     16
irf   xxxxx |      -5      11     -45     -27      5 |       1     15
jpl   uuuuu |     144     -19     -62      72      8 |      11     21
mit   uuuuu |       1      24    -150    -111     12 |       9     18
ngs   uuuuu |      12      44      82    -120     -1 |       7     13
sio   uuuuu |      -6      31    -181     -89     12 |      28     33



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