[IGSREPORT-20261] Wk 1657 IGS Final Orbits

Jim Ray igs.acc at noaa.gov
Thu Oct 27 05:15:34 PDT 2011


Author:  AC Coordinator / NOAA NGS

sum-file Version 2.0
Final IGS Orbit Combination - Week 1657   (Oct 09, 2011 - Oct 15, 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:

igs1657[0-6].sp3  IGS GPS ephemeris files in SP3 format.
igs1657[0-6].clk  IGS GPS satellite and station clocks in clock RINEX format.
igs1657[0-6].cls  IGS GPS clock combination summary report.
igs16577.erp      Earth Rotation Parameters (ERP) and their rates as well as
                  Universal Time (UT1-UTC) and Length Of Day (LOD) associated 
                  with IGS ephemerides.
igs16577.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  |  COD   | NRIL
                0  |  EMR   | 8 9 8 9
                0  |  ESA   | CHUR YELL CHUR UNSA YELL
                0  |  GFZ   | 2 IRKT MDVJ STHL
                0  |  GRG   | ADIS AMC2
                0  |  JPL   | 8 9 27 KOUR
                0  |  MIT   | 1 9 27 1 4 9 27 IRKT KHAJ KOUR MAC1 IRKT KHAJ KOUR
                0  |  MIT   | MAC1 SOFI
                1  |  EMR   | 9 8 9
                1  |  ESA   | 27 27 NTUS
                1  |  GFZ   | 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20
                1  |  GFZ   | 21 22 23 25 26 27 28 29 30 31 32 ALBH ALGO ALIC ALRT
                1  |  GFZ   | AMC2 AREQ ARTU ASPA AUCK BAKO BJCO BJFS BOGT BOR1
                1  |  GFZ   | BRFT BRMU BRUS CAS1 CEDU CHAT CHUR COCO CONZ CRO1
                1  |  GFZ   | DAEJ DARW DAV1 DGAR DRAO DUBO EPRT FAIR FLIN GLSV
                1  |  GFZ   | GMSD GOLD GOPE GRAZ GUUG HARB HNPT HOB2 HOFN HOLM
                1  |  GFZ   | IISC IRKJ IRKT ISPA KARR KERG KIRU KOUR LAMA LPGS
                1  |  GFZ   | MAC1 MAS1 MATE MAW1 MDO1 MDVJ MIZU NANO NICO NKLG
                1  |  GFZ   | NRC1 NRIL NTUS NYAL OHI2 ONSA OPMT PDEL PERT PIE1
                1  |  GFZ   | PRDS QAQ1 RAMO REUN RIOP SANT SCH2 SCUB SEY1 SFER
                1  |  GFZ   | STHL STJO SUTM SYOG THTI THU3 TIDB TIXI TLSE TOW2
                1  |  GFZ   | TSKB TWTF UFPR UNSA URUM VILL WAB2 WES2 WHIT WTZR
                1  |  GFZ   | WUHN YAKT YELL ZECK
                1  |  GRG   | ALRT AMC2
                1  |  JPL   | 8
                1  |  MIT   | 9 27 9 27 HARB NICO HARB KOUR NICO
                2  |  EMR   | 9 21 8 9 21
                2  |  ESA   | KOUR
                2  |  GFZ   | 4 MDVJ TLSE WILL
                2  |  GRG   | ADIS
                2  |  JPL   | 8 9 27 ALRT
                2  |  MIT   | 1 9 27 1 8 9 27 DAV1 DAV1 KOSG KOUR NRC1
                3  |  COD   | 27 KOSG
                3  |  EMR   | 9 8 9
                3  |  ESA   | FAIR KOUR UNSA
                3  |  GFZ   | MDVJ
                3  |  GRG   | KOUR USN3
                3  |  JPL   | 8 9 MCM4
                3  |  MIT   | 27 9 27 KOSG
                4  |  COD   | USNO ALRT NKLG USNO
                4  |  EMR   | 9 9 YELL
                4  |  GFZ   | BOGT MDVJ
                4  |  GRG   | ADIS AMC2
                4  |  JPL   | 9 27
                4  |  MIT   | 1 9 27 1 9 27 ALRT
                5  |  COD   | HNPT REUN
                5  |  EMR   | GRAZ THTI
                5  |  ESA   | GUUG REUN UNSA
                5  |  GFZ   | 4 ARTU MDVJ METS
                5  |  JPL   | 8 9 27
                5  |  MIT   | 21 27 8 9 21 27 GRAZ
                6  |  COD   | WROC NRIL WROC
                6  |  EMR   | 9 8 9
                6  |  GFZ   | ALBH ALGO ALIC ALRT AMC2 AREQ ARTU AUCK BJFS BRFT
                6  |  GFZ   | BRMU BRUS CAS1 CEDU CHAT CHUR COCO CONZ CRO1 DAEJ
                6  |  GFZ   | DARW DAV1 DRAO DUBO EPRT FAIR FLIN GLSV GMSD GOLD
                6  |  GFZ   | GOPE GRAZ GUAT GUUG HARB HNPT HOB2 HOFN HYDE IRKJ
                6  |  GFZ   | IRKT ISPA KARR KERG KIRU KOSG KOUC LAMA MAC1 MAS1
                6  |  GFZ   | MATE MAW1 MDO1 MDVJ MIZU MKEA NANO NICO NKLG NRC1
                6  |  GFZ   | NRIL NTUS NYAL OHI2 ONSA OPMT PDEL PERT PIE1 PRDS
                6  |  GFZ   | QAQ1 RAMO RESO REUN RIOP SANT SCH2 SCUB SEY1 SFER
                6  |  GFZ   | SOFI STHL STJO SUTM SYOG THTI THU3 TIDB TIXI TLSE
                6  |  GFZ   | TOW2 TSKB TWTF VILL WAB2 WES2 WHIT WSRT WTZR WUHN
                6  |  GFZ   | YAKT YAR2 YELL ZECK
                6  |  JPL   | TIXI
                6  |  MIT   | 7 9 27 2 7 9 27 HYDE

    
 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
               ----+--------+--------+-------------
                6  |  GFZ   | ~12:10 | ~ -0.96 ns

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

 7. Small rotations were applied to all the AC orbit and ERP values in order
    to align them to the IGS05 frame. These rotations were estimated in the IGS
    SINEX combination process, performed by the IGS Reference Frame Coordinator
    at the Institut Geographique National (IGN), and are based on the common
    stations between the individual AC SINEX solutions and the IGS05.snx SINEX
    frame. The estimated 7 transformations, from which only the 3 rotations are
    applied to the orbit and ERP values, are:
    
            |    DX     DY     DZ      RX     RY     RZ     SCL
     Centre |   [mm]   [mm]   [mm]   [uas]  [uas]  [uas]   [ppb]
     -------+---------------------------------------------------
       COD  |     .0     .3     .3     -32      2     21    -.14
       EMR  |    -.1    9.6    5.5       5     11    -30     .11
       ESA  |     .4    5.9    9.0      66    -49     51    -.24
       GFZ  |    -.9     .9    -.2     -25     17      1    -.12
       GRG  |   -5.6   13.7   23.5     -29     15     16    -.20
       JPL  |   -3.5    8.1    7.8      11    -17     39     .07
       MIT  |    2.9    3.5   15.0     -20     11    -23    -.04
       NGS  |    4.9     .8    3.5     -12    -27     25     .17
       SIO  |    2.0    7.0    6.4      90    -38    -22    -.08


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

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

10. Starting 5-Nov-2006 (GPS Week 1400, day 0, MJD 54044) until 16-Apr-2011
    (GPS Week 1631, day 6, MJD 55667) the absolute antenna model is introduced
    (IGSMAIL #5438). The antenna phase center offsets and phase center
    variations are given in the file:
        ftp://igs.org/igscb/station/general/igs05.atx
    These antenna calibrations are also used in the homogeneously reprocessed
    IGS products from GPS Weeks 730 to 1459 (1994-2007); see IGSMAIL #6136.
    Starting 17-Apr-2011 (GPS Week 1632, day 0, MJD 55668) the absolute antenna
    model is updated (IGSMAIL #6255 & #6374) as given in the file:
        ftp://igs.org/igscb/station/general/igs08.atx
    The JPL solution did not use IGS08/igs08.atx until GPS Week 1649, which
    caused their RMS clock residuals to be higher during that period than for
    the other centres; since GPS Week 1632 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 1.1657.a). It also displays the computed satellite
position sigmas for the combined orbits (table 1.1657.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 2.1657.[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 3.1657.[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 5.1657.0-6).

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 1657 summary.                       (Oct 09, 2011 - Oct 15, 2011)

Table 1.1657.a   GPS week: 1657   MJD: 55843.000-55849.000

         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  259|    0     0     0    64   -17    19  -.27    9    8 |    -400     202     20     81
        |    0     0     0     5    15    24   .03           |    1007    1793
emr   93|    1     1     0     0    -8    10   .48   21   20 |     500      63     22    125
        |    1     2     1    16    13    15   .03           |    1866    1152
esa  125|    0     0     0   -75    86   -21   .24    8    7 |    -617     403     19    184
        |    0     0     1     9    27    12   .02           |     853    2101
gfz  200|   -1     1     1    10  -110    31  -.21   12   11 |     220    -207     21     88
        |    0     0     1    20    46    11   .04           |     218     345
grg  132|    1     1     3    54   -38     5   .63   15   14 |     170     -93     56    283
        |    0     0     2    18    21    11   .03           |     559     834
igr  n/a|    0     0    -1    11   -29   -27  -.09    5    5 |    3812    -627     20     81
        |    0     0     0    13    21    17   .02           |    1271    1323
jpl  135|    1     0     0   -14    15    39   .67   16   16 |    1319    -143     19     86
        |    1     0     1     9    13    59   .03           |    1375    1014
mit  258|    0    -3     0     4   -62   -22  -.42   12   10 |      25    -241     23    190
        |    0     1     0    19    25    18   .02           |     609     988
ngs  226|    0     0    -2    55    45   -11  -.27   12    9 | -143080  155981   1762   3459
        |    1     0     1    22    34    13   .02           |  377866  412354
sio  252|   -1     1    -2  -200    28   -47  -.26   20   20 |     ---     ---    ---    ---
        |    0     1     0    28    30     8   .04           |     ---     ---


Table 1.1657.b   GPS week : 1657   MJD: 55843.000-55849.000   

         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  |   15   21    7    8    8    8    7 |
   2  |    4    5    4    4    4    4    5 |
   3  |    4    4    4    4    3    4    3 |
   4  |    6    6    5    5    5    4    4 |
   5  |    5    5    4    4    4    4    5 |
   6  |    4    4    3    3    3    4    3 |
   7  |    4    4    4    4    4    5    5 |
   8  |    6    6    6    6    6    6    6 |
   9  |    6    7    6    7    6    7    7 |
  10  |    4    4    4    4    4    4    4 |
  11  |    4    4    3    4    4    4    4 |
  12  |    5    5    5    5    5    5    5 |
  13  |    5    5    4    4    4    4    5 |
  14  |    4    5    5    4    5    5    5 |
  15  |    5    4    5    5    4    5    5 |
  16  |    5    5    5    5    4    4    4 |
  17  |    4    5    4    5    5    4    5 |
  18  |    4    4    4    4    5    5    5 |
  19  |    4    5    4    4    4    4    4 |
  20  |    5    5    5    4    4    5    4 |
  21  |    4    4    5    5    4    4    4 |
  22  |    4    4    4    4    4    4    4 |
  23  |    5    5    5    5    5    5    5 |
  25  |    4    4    4    4    4    4    4 |
  26  |    3    4    4    5    4    4    6 |
  27  |    9   10    8   10    9    8   13 |
  28  |    5    5    5    5    4    5    5 |
  29  |    4    4    4    4    5    5    5 |
  30  |    4    4    4    4    4    4    4 |
  31  |    4    4    4    4    4    4    4 |
  32  |    4    4    4    4    4    4    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 2.1657.0   GPS week: 1657   Day: 0   MJD: 55843.000                            

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  259|    0     0     0    65   -11    24  -.25    7    7 |     102    1117     22     77
        |                      5   -47                       |
emr   93|    2     3     0   -13   -24    43   .46   20   20 |   -1741     922     18    123
        |                     16   -48                       |
esa  125|    0     0     1   -74   126   -37   .20    8    8 |    -602     826     19    190
        |                     38   -35                       |
gfz  200|    0     1     3     5  -153    13  -.21   12   11 |     -71     127     25     94
        |                     -2     7                       |
grg  132|    2     1     4    52   -52    10   .61   16   16 |    -421     801     59    234
        |                     54   -82                       |
igr  n/a|    0     0     0    16   -11   -24  -.06    5    5 |    3068     957     19     69
        |                    -19   -31                       |
jpl  135|    2    -1    -2   -10    28   103   .73   15   15 |    -275     927     19     73
        |                     45   -24                       |
mit  258|    0    -3    -1   -28  -101   -41  -.44   13   11 |     906     320     22    199
        |                     16    48                       |
ngs  226|    0    -1    -1    67    77   -16  -.29   11    8 |      55    1111   1853   3606
        |                   -138  -151                       |
sio  252|   -1     0    -4  -228    -7   -57  -.21   22   22 |     ---     ---    ---    ---
        |                     84     4                       |

Table 2.1657.1   GPS week: 1657   Day: 1   MJD: 55844.000                            

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  259|    0     0     0    58     9     1  -.29    8    7 |   -2016    3148     16     79
        |                     53   -69                       |
emr   93|    0     2     1    13   -17     0   .49   21   20 |   -1797     774     12    115
        |                    -19   -21                       |
esa  125|    0     1     0   -87   110    -7   .27    9    8 |   -2140    3775     19    209
        |                     33   -14                       |
gfz  200|    0     1     0    32  -150    35  -.21   10   10 |       0       0      0      0
        |                     48    38                       |
grg  132|    2     2     2    40   -19    22   .62   15   14 |    -749     811     53    248
        |                     32   -88                       |
igr  n/a|    0     0    -1    -9    -7    -1  -.11    5    5 |    3019     195     20     92
        |                     23   -19                       |
jpl  135|    0     0     0   -26    31   -18   .64   16   15 |    -338     433     16     86
        |                     56   -53                       |
mit  258|    0    -5    -1    32   -55   -22  -.42   13   11 |    -472    1091     23    197
        |                     -5    21                       |
ngs  226|   -1     0    -1    19    37     4  -.24   12   12 |   -1692    2563   1964   3828
        |                    -36   -66                       |
sio  252|   -1     0    -2  -151    11   -52  -.25   21   20 |     ---     ---    ---    ---
        |                     62     7                       |

Table 2.1657.2   GPS week: 1657   Day: 2   MJD: 55845.000                            

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  259|    0     0     0    69   -16    52  -.30   10    8 |     682   -1379     17     71
        |                     11   -31                       |
emr   93|    1     0    -1     2    -5     0   .46   20   20 |    -568    1847     13    111
        |                     -6   -77                       |
esa  125|    0     0     1   -80    95   -38   .24    7    7 |     210   -1718     15    184
        |                     20   -26                       |
gfz  200|    0     2     1    19   -63    30  -.22   11   10 |     453    -613     20    112
        |                     44    23                       |
grg  132|    1     0     6    90   -51    -6   .66   15   14 |     497    -996     55    186
        |                    -25   -36                       |
igr  n/a|    0     0    -1    -2   -47   -34  -.11    5    5 |    3679     962     18     80
        |                    -15   -15                       |
jpl  135|    1    -1     0   -12    -7    72   .63   16   15 |     678    1283     16     78
        |                     46    15                       |
mit  258|    0    -2     0     0   -48   -33  -.42   11   10 |     220    -780     17    185
        |                     -3    10                       |
ngs  226|    0     0    -3    58   -13   -17  -.27   11    8 |     378    -891   1727   3706
        |                    -23    80                       |
sio  252|   -1     1    -2  -216    27   -47  -.24   19   20 |     ---     ---    ---    ---
        |                     83     7                       |

Table 2.1657.3   GPS week: 1657   Day: 3   MJD: 55846.000                            

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  259|    0     2     0    55   -28   -17  -.31   11   10 |     321   -1950     19     91
        |                     58   -73                       |
emr   93|   -1     0    -2    16   -11     9   .47   20   20 |    1906    -136     14    120
        |                     -9   -72                       |
esa  125|    0     0     2   -84    74   -21   .21    7    6 |    -498    -956     17    188
        |                     40     8                       |
gfz  200|    0     1     0    13  -115    45  -.27   12   12 |     384    -287     23     96
        |                     26    62                       |
grg  132|    0     1     0    65   -38   -13   .62   15   14 |     433    -493     58    239
        |                     17   -54                       |
igr  n/a|    0     0    -1    28   -35   -56  -.11    5    5 |    5390   -1005     21     79
        |                      4    16                       |
jpl  135|    1    -1     0   -17    14   117   .66   16   15 |    2625    -660     19     96
        |                     51   -56                       |
mit  258|    0    -3     0    22   -78   -33  -.43   12   11 |     349   -1613     22    211
        |                      0    11                       |
ngs  226|    0     0    -4    74    80     1  -.30   12    9 |     226   -1745   1704   3372
        |                    -49   -38                       |
sio  252|   -2     2    -2  -183     6   -52  -.31   19   21 |     ---     ---    ---    ---
        |                     81   -16                       |

Table 2.1657.4   GPS week: 1657   Day: 4   MJD: 55847.000                            

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  259|    0     0     0    67   -26    36  -.25    8    8 |    -741     856     24     81
        |                     21   -16                       |
emr   93|    0     0     1   -11    -6     1   .50   20   20 |    2736    -881     21    114
        |                     24  -101                       |
esa  125|   -1     0     1   -60    85   -20   .24    8    8 |   -1314    2375     22    170
        |                     24    14                       |
gfz  200|   -1     1     0   -32  -111    42  -.16   12   12 |      86     199     26     96
        |                     24    90                       |
grg  132|    0     2     2    34   -70    12   .60   16   15 |     130     658     53    206
        |                     60   -55                       |
igr  n/a|    0     0    -2     6   -45   -15  -.07    5    5 |    5417   -1462     20     66
        |                      3    24                       |
jpl  135|    4    -1     0    -8     6     0   .68   17   17 |    2996    -770     20     98
        |                    106   -65                       |
mit  258|    0    -3     0     0   -50   -28  -.39   11    9 |    -132     728     24    159
        |                     14    13                       |
ngs  226|    0     0    -4    80    58   -17  -.29   11    8 |    -540     326   1567   3488
        |                    -67   -98                       |
sio  252|   -1     1    -1  -224    46   -44  -.25   19   19 |     ---     ---    ---    ---
        |                     78   -16                       |

Table 2.1657.5   GPS week: 1657   Day: 5   MJD: 55848.000                            

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  259|    0     0     0    66    -7     5  -.25    8    8 |     246   -1166     20     74
        |                     31   -79                       |
emr   93|    0     4     0    17    17     6   .45   21   21 |    2014    -756     19    108
        |                     -5   -96                       |
esa  125|    0     0    -1   -69    68   -17   .25    7    7 |     206   -1765     18    174
        |                     30     4                       |
gfz  200|   -1     0     3    18  -146    23  -.16   13   12 |     454    -196     22     91
        |                      6    79                       |
grg  132|    0     1     6    55    -7     4   .63   16   15 |     801    -370     61    650
        |                     37  -110                       |
igr  n/a|    1    -1    -1    20    -4   -17  -.11    6    6 |    4129   -1804     21     78
        |                    -20     5                       |
jpl  135|    0     0    -1   -26    20    31   .67   16   16 |    2373    -843     17     86
        |                     85    10                       |
mit  258|    0    -2     0     0   -77    -7  -.40   10    9 |     271   -1037     18    166
        |                     14    19                       |
ngs  226|    1     0     0    57    61    -3  -.24   12   10 |      11    -603   1749   2962
        |                    -34   -30                       |
sio  252|   -2     1    -2  -214    32   -32  -.31   20   20 |     ---     ---    ---    ---
        |                     61   -29                       |

Table 2.1657.6   GPS week: 1657   Day: 6   MJD: 55849.000                            

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  259|    0     0     0    68   -38    35  -.26    9    9 |   -1399     788     25     95
        |                     52   -33                       |
emr   93|    4     0     1   -24    -8    11   .54   22   22 |     954   -1329     57    187
        |                     35   -62                       |
esa  125|    0     0     0   -72    46    -7   .26    9    9 |    -183     284     26    175
        |                     51    50                       |
gfz  200|   -3     0     1    17   -32    26  -.25   12   12 |     235    -683     31    127
        |                     25   103                       |
grg  132|    0     1     4    42   -27     7   .69   15   14 |     502   -1068     53    222
        |                     86   -53                       |
igr  n/a|    0    -1     0    22   -53   -38  -.09    6    6 |    1987   -2232     24    109
        |                    -23    50                       |
jpl  135|    0     0    -1     0    16   -30   .66   16   16 |    1179   -1372     32     88
        |                     26   -46                       |
mit  258|    0    -3     0     1   -23    12  -.41   11    9 |    -962    -399     35    215
        |                      7     3                       |
ngs  226|    0     1    -1    29    15   -33  -.26   11    9 | -999999 1091108   1775   3256
        |                    -81   -27                       |
sio  252|   -1     4    -1  -186    84   -44  -.26   21   20 |     ---     ---    ---    ---
        |                     41   -41                       |

       
       
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 3.1657.0   GPS week: 1657   Day: 0   MJD: 55843.000                            

        Weighted Average                                            Orbit Dynamics (7 days)
 PRN  |  cod  emr  esa  gfz  grg  igr  jpl  mit  ngs  sio  IGS |   cod  emr  esa  gfz  grg  igr  jpl  mit  ngs  sio   IGS
------+--------------------------------------------------------+---------------------------------------------------------
  X1E |   21  ---   23  ---  ---   21  ---   13  ---  ---   14 |    80  ---   95  ---  ---   92  ---   88  ---  ---    87
   2E |    5   21    7    6   14    4   14    9   11   25    4 |    30   37   31   34   35   32   32   31   35   32    30
   3  |    6   14    7   11   13    3    9   10   11   18    3 |    16   22   25   23   29   20   26   27   20   23    22
   4E |   10   25    9   13   23    6   19   11   12   32    5 |    71   81   73   68   81   74   82   71   73   75    73
   5  |    7   21    6    9   21    4   16   12   13   19    4 |    14   28   20   15   33   15   28   13   16   13    16
   6  |    6   15    7   10   14    3    8   11   10   14    3 |    23   26   30   27   36   26   32   31   23   26    27
   7E |    6   17    6   10   13    4   17   12    8   16    3 |    28   33   32   32   32   30   32   28   33   28    29
   8E |    8   26   13   11   18    5   18   18   21   25    5 |    12   35   22   16   28   15   28   22   29   26    16
   9E |   13   15   12   13   25    6   16   25   17   29    6 |    28   29   31   30   29   28   30   42   37   26    27
  10  |    6   13    7    7   16    3   11   18   13   21    4 |    14   23   18   20   25   14   22   17   15   18    16
  11  |    8   13    7   10   23    5   10   14   12   17    4 |    19   20   19   17   24   18   20   19   23   28    15
  12  |    5   26   10   13   12    5   20   16    9   32    5 |    25   34   30   32   29   26   31   27   26   25    25
  13  |    8   20    7   13   21    6   14   12   11   26    4 |    25   34   28   34   40   26   33   25   25   19    26
  14  |    6   20    8   11   16    5   15   11   12   24    4 |    23   29   33   34   37   22   31   30   26   30    26
  15  |    6   26    6   10   14    4   16   12   14   24    4 |    35   38   35   35   38   36   39   39   41   27    36
  16  |    8   25    7   13   13    5   20   14    6   25    4 |    22   33   24   31   29   25   28   27   25   28    24
  17  |    6   13    7   13   13    3   14   12    9   27    4 |    14   24   18   20   21   16   27   13   18   22    15
  18  |    4   28    7   12   16    4   15    9    8   12    4 |    15   31   17   12   22   15   27   13   14   15    14
  19  |    7   21    9    9   12    4   15   10   11   25    4 |    21   31   20   18   24   18   30   21   21   20    18
  20  |    7   21    8   10   19    5   16   17    6   18    4 |    18   28   21   17   25   17   25   17   14   24    17
  21E |    5   19    8   10   14    3    9   11    7   13    3 |    43   43   40   42   43   40   43   41   41   42    41
  22  |    5   22    6   15   19    5   15   14   10   14    4 |    12   26   16   15   29   12   27   15   14   16    13
  23  |    6   26    9   15   19    4   17   12   13   25    5 |    20   34   26   32   32   21   28   20   22   19    22
  25  |    7   15    8   11   12    6   14    8    8   18    3 |    28   25   29   24   33   24   35   29   27   20    26
  26  |    4   11    5    9   15    5    9    9   12   19    3 |    27   28   31   28   36   28   34   35   30   30    30
 X27E |   12   19   23   19  ---   13   28   23  ---  ---    9 |    23   30   39   35  ---   34   32   47  ---  ---    29
  28  |    7   18    8   20   15    5   16   15   14   20    5 |    28   35   33   40   36   28   31   32   29   30    30
  29  |   10   21    7   12    9    4   19   10    8   22    4 |    19   27   22   22   18   18   29   19   20   19    18
 X30  |    5   15    6   11   13    5  ---    8    9   13    3 |    15   16   18   18   19   14  ---   18   16   17    16
  31E |    6   19    6   11   12    4   18    9   11   13    3 |    13   25   20   14   26   14   24   16   18   18    16
  32  |    7   18    6   10   16    5   15   19    7   21    4 |    18   18   20   19   24   16   23   20   18   20    17
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |    7   20    8   12   16    5   15   13   11   22      |T   25   30   29   26   31   26   31   28   25   25    26
 WRMS |    7   20    8   11   16    5   15   11    8   22      |NE  20   27   24   24   29   20   28   23   21   22    21
 MEDI |    6   19    7   11   15    5   15   12   11   21      |MD  22   29   26   24   29   22   30   27   23   24    24

Table 3.1657.1   GPS week: 1657   Day: 1   MJD: 55844.000                            

        Weighted Average                                            Orbit Dynamics (7 days)
 PRN  |  cod  emr  esa  gfz  grg  igr  jpl  mit  ngs  sio  IGS |   cod  emr  esa  gfz  grg  igr  jpl  mit  ngs  sio   IGS
------+--------------------------------------------------------+---------------------------------------------------------
  X1E |   32  ---   25  ---  ---   30  ---   28  ---  ---   20 |    81  ---  106  ---  ---  104  ---  105  ---  ---    95
   2E |   10   21   11    9   15    6   15   10    9   24    4 |    42   48   49   46   44   42   47   46   46   42    46
   3  |    6   13    6    9   11    4   11   11   14   15    3 |    14   18   15   16   18   12   22   18   13   18    14
   4E |   13   24    9   17   21    5   17   16   14   43    6 |    59   71   58   64   69   58   69   58   61   63    59
   5  |    7   20    8   10   17    3   17    9   15   17    4 |    15   26   21   17   32   14   26   14   16   15    17
   6  |    6   14    7    9   10    4    9   13   14   13    3 |    16   21   19   15   23   14   25   20   16   18    16
   7E |    6   21    4    9   14    4   18    9   12   14    4 |    32   35   33   30   32   30   37   31   31   32    32
   8E |    9   39   18   13   15    6   17   10   25   15    6 |    17   47   31   15   25   16   28   20   31   20    19
   9E |   14   15   13   10   22    4   17   29   17   26    6 |    22   25   25   22   23   21   27   39   35   23    22
  10  |    6   11    6    7   15    5   13   14   11   22    3 |    16   20   17   16   21   11   22   18   18   18    15
  11  |    6   14    6   10   21    4   11   13   12   17    4 |    22   24   17   25   24   18   24   27   23   29    18
  12  |    7   22    9    8   13    7   18   14   12   28    4 |    21   29   24   22   26   20   28   23   25   20    21
  13  |    7   19    7   10   19    3   14   10   10   25    4 |    23   30   24   24   31   20   29   22   22   19    22
  14  |    9   21    8   11   14    4   17   10   12   21    4 |    16   28   23   23   23   18   27   21   20   20    19
  15  |    6   23    6    7   11    4   18   11   12   18    4 |    27   36   31   29   32   26   33   32   29   28    28
  16  |    9   28   11   11   13    5   21   14   10   21    5 |    22   35   24   26   27   22   31   26   25   26    23
  17  |    7   15    8   12   13    5   17   11   10   26    4 |    14   23   20   20   20   15   27   15   18   17    16
  18  |    7   25    8   10   13    3   16    8   10   13    4 |    15   29   18   14   21   14   26   14   18   18    15
  19  |    7   22    7   12   11    3   19   13   13   21    4 |    18   31   17   20   22   17   32   22   17   19    18
  20  |   10   19    8    8   18    3   17   13    8   16    4 |    22   30   23   23   26   21   31   27   25   25    22
  21E |    7   18   12    7   14    4    8   11   10    9    3 |    35   42   40   36   42   36   42   36   37   35    37
  22  |    5   21    8   12   18    3   16   11   12   15    4 |    13   25   16   12   27   12   26   14   14   19    14
  23  |    7   24   10   10   14    4   16   10    7   24    4 |    20   34   23   24   26   19   28   22   20   21    20
  25  |    8   16    5    7   14    6   14    8    9   16    3 |    24   26   22   21   28   21   30   23   25   18    21
  26  |    6   13    4    6    8    5   11   11   16   17    3 |    27   28   30   28   28   24   33   31   28   29    28
 X27E |   21   20   21   10  ---   17  ---   24  ---  ---   10 |    24   33   28   29  ---   32  ---   43  ---  ---    25
  28  |    7   21    5   13   14    5   19   13   10   20    4 |    22   30   28   28   32   23   28   25   28   25    25
  29  |    7   18    7    9   10    4   18   10   10   23    4 |    19   26   17   19   19   16   27   20   20   21    17
 X30  |    5   19    7    8   13    5  ---    8    8   15    3 |    16   20   17   19   18   13  ---   16   18   17    15
  31E |    6   21    8    7   12    5   20    9   12   14    4 |    16   28   22   17   26   16   29   17   23   16    18
  32  |    7   18    7    9   14    5   15   15   10   22    4 |    21   24   20   24   24   20   31   27   22   28    21
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |    8   21    9   10   15    5   16   13   12   21      |T   24   30   27   24   27   24   30   28   24   24    25
 WRMS |    7   20    8   10   14    5   15   11   12   20      |NE  19   26   21   21   24   17   27   21   20   21    19
 MEDI |    7   20    8    9   14    4   17   11   12   18      |MD  21   28   23   22   26   20   28   23   23   20    21

Table 3.1657.2   GPS week: 1657   Day: 2   MJD: 55845.000                            

        Weighted Average                                            Orbit Dynamics (7 days)
 PRN  |  cod  emr  esa  gfz  grg  igr  jpl  mit  ngs  sio  IGS |   cod  emr  esa  gfz  grg  igr  jpl  mit  ngs  sio   IGS
------+--------------------------------------------------------+---------------------------------------------------------
  X1  |   12  ---    6  ---  ---   24  ---   12  ---  ---    7 |    71  ---   67  ---  ---   74  ---   75  ---  ---    71
   2  |    8   19    5   12   22    6   14    9    8   22    4 |    30   37   34   41   43   35   38   33   37   30    33
   3  |    9   13    6    8   12    5    9    8   12   14    3 |    16   20   17   18   22   16   21   19   13   19    16
   4  |   14   20    8   17   15    5   16    9   15   24    5 |   109  119  110  112  116  111  120  112  116  112   112
   5  |    8   24    3   11   17    3   18    8   12   17    4 |    13   30   17   21   35   15   27   14   16   14    16
   6  |   10   12    6    8   11    5   10   10   11   11    3 |    21   24   23   21   27   20   28   23   18   21    22
   7E |    9   21    4    8   18    4   21    9    9   15    4 |    24   31   25   29   28   24   33   27   27   25    25
   8E |   11   26   15   13   12    8   21   13   23   23    6 |    12   29   20   17   18   11   26   18   23   22    11
   9E |   16   18   13   11   18    5   17   24   19   23    6 |    21   25   22   22   21   19   23   33   24   23    18
  10  |    9   12    4    9   14    6   13    9   10   23    3 |    16   22   17   23   25   12   18   18   17   18    16
  11  |    8   14    4    7   16    6    8    9   10   13    3 |    14   24   16   18   24   17   22   19   16   24    15
  12  |    8   25    8   11   12    6   17   15   11   25    4 |    21   29   23   25   26   22   25   25   25   21    21
  13  |    7   20    8    9   19    2   16   10   10   23    4 |    19   31   22   25   34   21   29   23   24   15    21
  14  |    9   22    8   10   13    5   15   14   11   20    4 |    16   26   24   25   26   18   25   26   14   22    19
  15  |    7   24    6   12   14    5   18   10   13   17    4 |    21   30   22   30   33   23   25   26   24   23    22
  16  |    9   25    8   10   11    5   20   11    7   19    4 |    19   31   20   21   25   20   28   23   18   20    19
  17  |    8   16    6   14   12    5   17    9    7   25    4 |    13   26   18   20   19   15   25   18   17   15    15
  18  |    8   26    6   10   15    3   16   10    6   14    4 |    14   29   15   13   22   11   23   13   13   17    13
  19  |    7   19    6    7    9    4   19   10   11   21    4 |    16   28   16   16   23   15   29   18   11   16    16
  20  |    8   25    6   10   17    4   19   10    9   17    4 |    17   34   18   17   27   18   27   20   21   18    18
  21E |   22   16   10   10   15    7   12   12    6   11    4 |    77   81   82   83   80   75   85   82   79   76    80
  22  |    7   25    8   11   17    4   12    9    7   13    4 |    10   27   19   12   28   10   24   12   12   17    13
  23  |    7   24    8   11   14    3   19   10    8   22    4 |    17   32   21   24   27   20   29   21   21   19    19
  25  |    9   16    5    9   13    3   13    8   10   18    3 |    24   28   23   23   29   21   28   23   23   20    21
  26  |    6   12    8    8   12    5   13    9   13   17    3 |    21   24   19   24   30   20   23   25   19   24    20
 X27E |   16  ---   12   14  ---   10   20   20  ---  ---    8 |    16  ---   29   29  ---   22   31   33  ---  ---    21
  28  |    9   22    6   14   13    4   17   12   11   22    4 |    25   34   28   33   34   27   30   30   29   29    27
  29  |    8   20    5    9   12    4   18   10   11   22    4 |    14   24   12   16   12   12   22   17   15   17    12
 X30  |    8   12    5   11    9    3  ---    9   13   15    3 |    14   16   14   18   17   13  ---   16   16   15    13
  31E |    8   21    6   12   11    4   19    8   11   15    4 |    14   26   17   17   28   14   25   13   20   17    15
  32  |   10   19    6    8   17    6   17   13    6   21    4 |    18   27   21   21   23   19   30   24   20   26    19
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |   10   20    7   11   15    5   16   11   11   19      |T   24   32   26   27   31   24   31   28   25   25    25
 WRMS |    8   20    7   10   14    5   15   10    8   20      |NE  17   27   19   21   25   17   25   20   18   19    17
 MEDI |    8   20    6   10   14    5   17   10   11   19      |MD  17   28   21   21   27   19   27   23   20   20    19

Table 3.1657.3   GPS week: 1657   Day: 3   MJD: 55846.000                            

        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  |   13  ---   11  ---  ---    9  ---    9  ---  ---    8 |    47  ---   51  ---  ---   54  ---   52  ---  ---    49
   2  |    8   20    5   13   16    5   13   10    9   23    4 |    24   32   25   28   30   25   31   27   28   25    24
   3  |   14   11    4   10   14    7   11   13   11   14    4 |    29   28   26   26   31   24   33   29   30   28    26
   4  |    9   24    6   15   16    5   14   10    8   29    4 |    61   69   62   61   66   64   68   62   62   63    61
   5  |    7   25    4   12   18    4   16   10    9   16    4 |    19   34   25   23   37   21   33   20   21   21    23
   6  |    7   10    4    8   13    4   10   12   10   12    3 |    28   31   28   29   37   27   38   32   30   29    29
   7E |    7   20    7   10   15    4   19   11   10   14    4 |    41   51   48   46   49   42   53   43   46   45    45
   8E |   13   33   10   15   13    6   16   15   27   19    6 |    19   43   28   24   27   20   33   26   30   28    23
   9E |   20   19   12   13   22    5   19   26   18   25    6 |    25   35   33   29   29   27   36   43   38   31    29
  10  |   12   13    5   13   15    6   11   11    8   21    4 |    29   31   25   26   31   21   32   24   26   23    25
  11  |    9   16    6    9   22    6   11    8   13   10    4 |    27   31   28   30   30   29   35   27   32   32    27
  12  |    7   23    8   15   13    9   18   11    9   21    4 |    30   37   36   34   34   31   38   33   34   26    32
  13  |    7   20    6   12   17    3   15   10   10   23    4 |    29   37   33   33   39   29   38   28   33   26    31
  14  |    8   22    6   14   11    4   18   11    9   18    4 |    21   30   30   32   29   24   34   28   23   26    25
  15  |    7   23    9   14   15    5   18   10   10   18    4 |    33   42   38   36   42   33   42   39   36   32    36
  16  |   10   24    8   11   15    5   21   16   10   22    5 |    29   38   32   35   36   31   37   37   35   36    32
  17  |    9   17    6   18   11    4   17   11   12   24    4 |    19   29   24   29   26   18   33   19   25   21    22
  18  |    6   23    5   13   15    4   16    9   11   14    4 |    20   33   21   20   28   19   33   19   22   22    21
  19  |    8   19    6   10   11    4   17   14   12   21    4 |    27   35   27   29   29   26   39   28   29   28    27
  20  |    9   20    6    9   16    5   17   10   10   17    4 |    26   37   28   29   29   27   35   25   29   29    27
  21  |   15   23    4    7   17    6   14    9   15   13    4 |    56   68   63   60   68   62   69   63   66   60    62
  22  |    8   22    6   14   18    3   16   10   10   12    4 |    17   31   25   22   32   17   33   19   21   21    21
  23  |    8   23    5   13   13    4   17   12    9   23    4 |    28   38   31   33   33   28   37   27   32   29    29
  25  |    7   19    6   11   12    4   13    8   10   17    3 |    32   34   33   30   34   28   37   32   29   27    30
  26  |   27   15    7   13   12    6   13   10   13   16    5 |    46   39   34   34   39   32   41   38   36   33    35
 X27E |   25   28   16   21  ---   30   20   26  ---  ---    9 |    24   41   45   35  ---   32   37   48  ---  ---    35
  28  |    7   17    6   16   15    5   19   14   11   21    4 |    26   33   29   37   36   27   34   31   33   31    29
  29  |    9   18    5   13   11    5   18    9   11   21    4 |    24   30   23   25   23   21   34   25   24   24    23
 X30  |    9   15    5   12    9    5  ---    8   11   16    3 |    20   22   24   24   24   19  ---   24   22   21    22
  31E |    5   21    5   11   12    3   18    8    9   12    3 |    20   34   25   24   31   22   34   24   25   26    24
  32  |    8   20    7    8   13    5   17   12    9   23    4 |    27   29   27   29   26   27   36   27   29   30    26
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |   11   20    7   12   15    5   16   12   12   19      |T   29   36   32   31   34   29   38   32   31   30    30
 WRMS |   10   20    6   12   14    5   15   11    9   21      |NE  26   33   28   29   32   25   35   27   28   27    27
 MEDI |    8   20    6   13   15    5   17   10   10   18      |MD  27   34   28   29   31   27   36   28   30   28    27

Table 3.1657.4   GPS week: 1657   Day: 4   MJD: 55847.000                            

        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  |    8  ---   13  ---  ---   10  ---   11  ---  ---    8 |    56  ---   65  ---  ---   64  ---   59  ---  ---    59
   2  |    7   18    6    9   17    4   14   11    6   23    4 |    23   32   25   23   30   23   29   24   25   23    23
   3  |    7   12    6    7   12    4   11   10    9   15    3 |    21   21   18   21   27   19   27   24   22   21    20
   4  |    8   17    9   20   15    6   12    9   10   29    4 |    50   57   47   50   52   47   58   45   48   53    48
   5  |    8   21    4   10   20    4   16   11    8   17    4 |    17   28   19   15   35   16   30   12   16   15    16
   6  |    7   11    4    9   11    4   11    9    7   14    3 |    24   27   25   23   31   23   32   27   25   23    24
   7E |    7   24    7   10   12    4   20    9   11   12    4 |    31   35   29   27   32   27   30   29   31   30    29
   8E |   13   32   15   16   13    7   17   13   25   16    6 |    16   37   28   16   26   17   28   26   35   24    20
   9E |   15   19   13   12   23    5   20   21   19   25    6 |    29   28   29   28   28   27   31   38   38   29    27
  10  |    6   12    6   12   13    5   11    7    9   20    3 |    18   26   20   21   26   16   26   20   21   19    18
  11  |    7   17    6    9   21    5   14   10   10   11    3 |    22   28   19   22   27   20   25   23   29   25    19
  12  |    7   21   10   17   17    5   19   11    9   22    4 |    25   32   27   31   29   26   31   25   27   28    24
  13  |    6   20    6   13   18    5   16    7    9   23    4 |    23   31   23   26   35   21   31   21   24   14    21
  14  |    9   20    7   13   15    4   19   12   10   17    4 |    22   31   25   28   32   22   31   28   26   21    22
  15  |    6   23    8   12   15    5   16    9   12   16    4 |    23   29   22   26   31   23   28   25   20   16    21
  16  |    7   23    8   10   13    4   20   11    8   22    4 |    22   31   22   25   28   22   29   25   24   26    22
  17  |    9   13    8   18   12    5   20    9   14   23    4 |    16   23   19   24   25   16   31   16   18   21    16
  18  |    9   25    9   12   20    4   18    9    8   15    4 |    18   30   20   16   27   17   27   13   15   16    15
  19  |    8   18    7   10   12    5   18   13   10   22    4 |    21   31   21   19   25   18   31   22   25   18    19
  20  |    7   21    7   11   18    6   18    9    9   19    4 |    17   29   15   14   26   16   26   18   19   20    15
  21  |    9   18    4    9   15    5   10    9    9   16    3 |    41   42   41   34   48   39   42   37   37   35    38
  22  |    6   22    8   11   21    5   15    8    6   12    4 |    16   27   21   14   31   15   27   13   11   14    15
  23  |    7   24    8   15   18    5   23    7    7   25    4 |    21   35   23   26   29   20   29   20   20   16    20
  25  |    8   18    9   11   16    6   14    8    8   16    4 |    28   30   30   28   32   27   33   25   27   25    25
  26  |    7   11    7   10   12    4   11   11   13   15    3 |    24   30   30   30   33   26   31   29   24   27    26
 X27E |   21   19   17   18  ---   19   21   19  ---  ---    8 |    29   32   39   36  ---   33   35   41  ---  ---    31
  28  |    7   18    4   14   14    4   19   13    7   21    4 |    23   28   24   31   32   24   28   27   24   25    23
  29  |    6   18    5   13   13    4   21   10   14   22    4 |    22   29   20   18   21   18   27   24   21   23    18
 X30  |    6   12    6   11   15    5  ---    6   10   17    3 |    19   22   21   18   20   17  ---   16   17   20    17
  31E |    8   21    7   14   12    4   23    7    9   13    4 |    20   34   25   20   29   21   32   19   24   21    21
  32  |    8   17    6    9   14    5   16   11    8   23    4 |    18   21   17   16   23   15   25   18   20   22    15
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |    8   20    8   12   16    5   17   10   11   19      |T   24   30   26   24   30   23   30   25   24   23    23
 WRMS |    8   20    8   12   15    5   17    9    8   19      |NE  20   28   21   22   28   19   28   21   21   20    19
 MEDI |    7   18    7   11   15    5   17   10    9   17      |MD  22   30   23   23   29   21   30   24   24   22    21

Table 3.1657.5   GPS week: 1657   Day: 5   MJD: 55848.000                            

        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  |   10  ---   11  ---  ---   14  ---   12  ---  ---    8 |    47  ---   39  ---  ---   45  ---   40  ---  ---    41
   2  |    8   19    7   13   16    4   16   11    6   24    4 |    17   25   21   18   26   17   21   19   16   20    16
   3  |    6   12    8   12   13    6   13    8   12   19    3 |    16   21   23   18   22   17   25   20   18   19    18
   4  |    8   20    7   11   11    5   12    7    9   30    4 |    42   52   45   40   42   42   48   39   42   45    42
   5  |    7   22    5    9   18    4   14    9    8   17    4 |    16   31   22   17   35   16   28   13   16   14    17
   6  |    6   11    8   12   12    4   13    8   12   17    3 |    20   25   27   22   27   21   31   23   21   19    22
   7E |    8   20    6   11   20    6   24   11    9   13    4 |    39   47   44   41   49   39   46   39   45   39    42
   8E |   13   39   10   12   13    6   19   15   25   17    6 |    10   44   18   12   22   12   26   20   32   21    13
  X9E |   14  ---   10   14   24    9   21   21   22   25    6 |    20  ---   15   19   20   18   24   36   32   23    18
  10  |    8   11    5   12   16    4   13    7   10   19    3 |    16   22   15   19   25   11   21   14   13   18    14
  11  |    7   17    6   11   19    4   15    9    8   10    3 |    22   28   19   19   31   17   25   20   21   21    18
  12  |    9   23   10   18   18    6   16   11   10   24    5 |    21   30   26   30   26   24   26   23   23   25    22
  13  |    7   22    6   12   16    5   16    8    9   25    4 |    20   29   20   23   32   17   29   18   20   13    18
  14  |   10   22    6   13   18    5   17   11   11   17    4 |    14   28   21   23   28   16   29   22   17   15    17
  15  |    9   20    9   13   15    4   15    9   15   16    4 |    22   30   22   23   30   21   29   24   26   17    22
  16  |    7   24    7   12   13    7   19   11    9   22    4 |    21   31   24   26   28   22   28   26   22   20    22
  17  |    9   16    5   15   11    8   17    9    7   23    4 |    10   26   15   20   19   12   26   10   15   18    14
  18  |    9   27    6   13   18    5   15    8   12   15    4 |    15   29   16   12   25   12   25   11   16   13    13
  19  |    7   19    7   13   12    6   18   11   12   24    4 |    19   31   20   20   26   18   31   19   18   20    19
  20  |    7   27    6   15   15    6   17   11   12   18    4 |    19   31   21   19   28   18   27   19   20   20    18
  21  |    9   16    6   10   19    9   10    9   11   19    4 |    40   46   44   39   52   39   46   38   41   40    42
  22  |    8   21    6   16   20    4   15    7    9   13    4 |    13   24   18   17   31   12   28   11   14   11    14
  23  |    6   28    8   14   16    7   20    8   13   26    5 |    22   35   22   24   26   20   31   21   25   18    21
  25  |    9   17   10   11   18    6   13   10   15   15    4 |    23   21   23   19   27   22   30   21   25   19    20
  26  |    7   13    7   11   13    7    9   10   13   14    3 |    28   30   26   25   31   25   27   25   30   26    26
 X27E |   16   23   17   16  ---   15   21   19  ---  ---    8 |    21   29   31   29  ---   31   29   38  ---  ---    25
  28  |    9   20    6   15   17    7   23   14   11   23    5 |    17   27   21   27   28   18   24   22   20   24    18
  29  |   12   17    5   10   12    7   18   14   18   24    4 |    16   21   16   14   18   12   24   19   15   16    13
 X30  |    9   15    5   13   14    6  ---   10   12   18    4 |    17   22   19   25   21   17  ---   26   17   24    19
  31E |    7   18    8   11   11    5   21    9   11   13    4 |    14   26   21   15   24   12   24   13   13   12    14
  32  |    9   21    6   11   14    5   17   13    8   23    4 |    23   23   23   20   26   18   29   20   20   30    20
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |    8   21    7   13   16    6   16   10   12   20      |T   21   29   23   22   28   20   28   22   22   21    21
 WRMS |    8   21    7   12   15    6   16    9   10   20      |NE  18   27   20   21   26   17   27   19   19   19    18
 MEDI |    8   20    7   12   16    6   16   10   11   19      |MD  20   29   21   20   27   18   28   21   20   20    18

Table 3.1657.6   GPS week: 1657   Day: 6   MJD: 55849.000                            

        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  |   10  ---    9  ---  ---    6  ---   10  ---   21    6 |    63  ---   70  ---  ---   68  ---   65  ---    4    66
   2  |    9   24    5   17   27    5   16   13    8   22    5 |    26   33   28   30   34   26   33   27   32   27    26
   3  |    8   14    5   10   13    6   11    7    7   18    3 |    23   29   25   26   31   23   31   27   22   28    25
   4  |    9   20   10   10   14    6   12    8    8   28    4 |    64   75   65   60   65   66   73   63   69   70    64
   5  |    9   24    5   15   18    5   17    9   12   18    4 |    22   35   26   22   42   24   35   19   30   22    24
   6  |    8   15    5   11   10    6    9    7   11   14    3 |    28   33   32   27   35   28   35   32   27   27    29
   7E |    6   26    8   12   16    6   21    9   11   14    4 |    40   49   40   42   45   39   51   39   42   38    40
   8E |   12   33   14   17   12    4   17   16   22   22    6 |    16   42   21   18   26   15   29   24   30   25    16
   9E |   13   24   14   11   20    6   20   18   22   35    6 |    30   34   35   29   36   30   36   34   36   37    29
  10  |    8   16    5   11   11    5   14    7    7   16    3 |    24   30   23   23   31   20   31   24   24   24    23
  11  |    9   19    9   11   20    5   12    7    9   11    4 |    20   33   24   27   37   23   33   24   23   27    23
  12  |    8   24   12   12   14    5   15    9    9   25    4 |    26   33   31   33   34   26   31   24   28   23    26
  13  |    7   24    8   14   15    5   16    6    9   24    4 |    31   39   32   39   44   32   39   30   30   22    31
  14  |   11   24    8   12   13    7   16    9   10   18    4 |    23   31   30   33   36   27   32   30   30   24    26
  15  |    9   25    9   12   11    5   17   10   10   16    4 |    37   42   39   39   48   36   41   39   40   35    37
  16  |    7   25    7   12   11    7   17   10   13   20    4 |    28   38   31   31   36   30   34   33   27   29    29
  17  |   10   17    8   17   12    7   17   12    8   23    4 |    19   28   23   27   26   19   31   22   22   24    20
  18  |    8   30    6   13   16    5   16    9    7   17    4 |    21   36   20   17   32   19   32   16   16   23    19
  19  |    7   21    6   10   11    7   16    9   10   24    4 |    23   38   26   24   31   23   38   25   27   27    25
  20  |    8   21    8   10   18    5   14   11    9   16    4 |    28   38   28   26   34   27   33   26   29   27    26
  21  |    9   19    6    9   21    5    8    9    9   21    4 |    40   45   46   41   53   42   49   41   41   42    42
  22  |    8   21   10   12   16    7   14    7   10   13    4 |    19   31   22   16   35   17   31   15   16   18    18
  23  |    8   29    9   13   12    6   19    6   10   26    4 |    30   45   32   37   39   32   39   31   30   30    31
  25  |    9   17   12   12   15    5   16   10   12   14    4 |    29   29   32   28   34   26   37   26   32   22    27
  26  |   10   16    8   10   14    8   16   27   10   28    5 |    72   73   73   70   75   70   74   77   70   63    71
 X27E |   24   23   40   19  ---   16   19   31  ---  ---   13 |    25   34   37   33  ---   31   32   34  ---  ---    26
  28  |    8   24    5   16   15    5   22   14   10   23    5 |    29   37   31   38   39   29   33   35   33   34    30
  29  |   10   17    8   12   12    6   18   13   13   24    4 |    21   27   22   19   25   19   29   21   24   21    19
 X30  |    7   14    8   10   14    5  ---    9   10   22    4 |    29   34   37   30   31   26  ---   31   25   35    29
  31E |    7   21   12   11   12    5   15    9   12   11    4 |    18   27   24   20   28   20   28   16   24   18    18
  32  |    8   21    8    9   17    4   16   13   11   23    4 |    27   33   29   26   32   29   34   27   31   38    27
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |    9   22    9   12   15    6   16   11   11   21      |T   30   37   33   31   37   30   37   31   31   29    30
 WRMS |    9   22    9   12   14    6   16    9    9   20      |NE  27   36   30   29   36   27   35   28   28   28    27
 MEDI |    8   21    8   12   14    5   16    9   10   21      |MD  27   34   31   28   35   27   33   27   30   27    26



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 4.1657   GPS week: 1657   MJD: 55843.0-55849.0

CENT| CLK EPO  |        BRUS       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 2968 |U    9     8    25 |U   11    12    38 |U   18    14    30 |
emr | emr 2840 |U   13    10    32 |U   12    11    41 |    24    18    42 |
esa | esa 2976 |    10     9    25 |U   11    11    38 |    21    11    26 |
gfz | gfz 2865 |U   11     8    28 |U   13    13    43 |U   23    16    33 |
grg | grg 2784 |    10     8    27 |U   11    11    41 |    22    16    40 |
igr | igr 2940 |    10     9    25 |    11    12    38 |    22    14    36 |
igs | igs 2960 |    10     8    26 |    11    12    37 |    18    13    29 |
jpl | jpl 2754 |U   13    10    33 |U   13    11    45 |    30    19    73 |
mit | mit 2976 |U   19    25   110 |U   15    12    44 |U   14    21    30 |



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 5.1657.0   GPS week: 1657   Day: 0   MJD: 55843.0

CENT| CLK EPO  |        BRUS       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 2955 |     9     9    28 |    14    12    50 |    11    22    19 |
emr | emr 2863 |    13    11    40 |    17    11    61 |    12    26    30 |
esa | esa 2976 |     9     8    29 |    14    10    54 |    13    15    18 |
gfz | gfz 2864 |     9     8    29 |    15    15    64 |     9    23    21 |
grg | grg 2784 |    10     9    33 |    14    11    60 |    11    13    20 |
igr | igr 2970 |     9     8    28 |    13    12    53 |    13    20    20 |
igs | igs 2969 |     8     8    27 |    14    13    51 |    12    20    18 |
jpl | jpl 2765 |    13    10    38 |    17    11    67 |    48    44   209 |
mit | mit 2976 |     9     6    31 |    18    13    60 |    11    17    19 |

Table 5.1657.1   GPS week: 1657   Day: 1   MJD: 55844.0

CENT| CLK EPO  |        BRUS       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 2973 |    12    10    37 |     8    12    42 |  ----  ----  ---- |
emr | emr 2865 |    14    12    32 |    10    10    42 |  ----  ----  ---- |
esa | esa 2976 |    12    11    35 |    10    10    38 |  ----  ----  ---- |
gfz | gfz 2862 |    14    10    38 |    15    15    50 |  ----  ----  ---- |
grg | grg 2784 |    13    12    40 |    11    12    35 |  ----  ----  ---- |
igr | igr 2943 |    13    13    36 |     8    12    39 |  ----  ----  ---- |
igs | igs 2914 |    12    10    34 |     9    12    38 |  ----  ----  ---- |
jpl | jpl 2678 |    14    14    36 |    12    11    41 |  ----  ----  ---- |
mit | mit 2976 |    11    11    32 |    13    12    43 |  ----  ----  ---- |

Table 5.1657.2   GPS week: 1657   Day: 2   MJD: 55845.0

CENT| CLK EPO  |        BRUS       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 2969 |     9     7    19 |    12    12    47 |     7     8    12 |
emr | emr 2776 |    14    10    32 |    14    11    45 |    12     9    34 |
esa | esa 2976 |     9     8    20 |    12    13    43 |     8     9    12 |
gfz | gfz 2863 |    13     9    33 |    13    12    48 |     7     9    12 |
grg | grg 2784 |     8     5    24 |    12    12    46 |    13    10    30 |
igr | igr 2976 |     9     9    20 |    11    13    42 |     7     7    10 |
igs | igs 2968 |     9     9    21 |    12    11    42 |     7     7    12 |
jpl | jpl 2770 |    15     8    33 |    15    10    53 |     8     7    17 |
mit | mit 2976 |    12    10    36 |    16    13    43 |    13    12    32 |

Table 5.1657.3   GPS week: 1657   Day: 3   MJD: 55846.0

CENT| CLK EPO  |        BRUS       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 2967 |     8     7    18 |     8    10    27 |     8    10    30 |
emr | emr 2868 |    12     9    25 |    10     8    33 |     9    12    34 |
esa | esa 2976 |     9     8    20 |     7    10    28 |     8     9    27 |
gfz | gfz 2869 |    12     9    22 |     7    12    28 |     9    10    29 |
grg | grg 2784 |    10     8    21 |     7    10    27 |    12    11    41 |
igr | igr 2971 |     9     7    20 |     8    11    30 |     7     7    27 |
igs | igs 2969 |     9     7    19 |     8    11    28 |     8     8    28 |
jpl | jpl 2768 |    13     8    20 |     9     9    39 |    16    16    66 |
mit | mit 2976 |     9     7    19 |    12    11    33 |     9    10    30 |

Table 5.1657.4   GPS week: 1657   Day: 4   MJD: 55847.0

CENT| CLK EPO  |        BRUS       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 2968 |     8     9    21 |     6    11    25 |     7     8    19 |
emr | emr 2867 |    11     8    31 |     7    10    27 |     8    13    25 |
esa | esa 2976 |     9     9    21 |     7    10    24 |     7     7    20 |
gfz | gfz 2867 |     8     6    20 |    11    14    34 |     8     9    18 |
grg | grg 2784 |    10     8    21 |     9    10    33 |     7     7    19 |
igr | igr 2967 |     9     9    22 |     8    11    25 |     6     7    16 |
igs | igs 2966 |     8     8    20 |     8    11    25 |     7     8    20 |
jpl | jpl 2767 |    12    13    38 |    10    11    34 |    10    11    19 |
mit | mit 2976 |    10     7    20 |    11    11    33 |    10    10    34 |

Table 5.1657.5   GPS week: 1657   Day: 5   MJD: 55848.0

CENT| CLK EPO  |        BRUS       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 2971 |    10     6    26 |    12    12    36 |     7     9    13 |
emr | emr 2776 |    13     9    30 |    11    14    36 |     8    12    18 |
esa | esa 2976 |    10     8    28 |    13    11    38 |     7     9    15 |
gfz | gfz 2867 |    11     6    28 |    12    15    32 |     8    11    15 |
grg | grg 2784 |    10     7    25 |    14    11    40 |     9     8    17 |
igr | igr 2974 |    10     8    31 |    10    14    36 |     6    10    13 |
igs | igs 2972 |    10     6    27 |    12    11    36 |     7     9    14 |
jpl | jpl 2764 |    13    11    39 |    12    11    43 |     8     9    17 |
mit | mit 2976 |    19    10    31 |    17    12    52 |     8    11    17 |

Table 5.1657.6   GPS week: 1657   Day: 6   MJD: 55849.0

CENT| CLK EPO  |        BRUS       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 2976 |     9    10    27 |    16    13    42 |    70    26    88 |
emr | emr 2868 |    12    10    31 |    17    14    42 |    94    36   111 |
esa | esa 2976 |    10     9    23 |    15    13    45 |    81    19    63 |
gfz | gfz 2868 |    10     8    22 |    16    12    43 |    97    38   106 |
grg | grg 2784 |    10    10    26 |    13    13    44 |    82    46   112 |
igr | igr 2779 |    12     9    19 |    17    14    44 |    92    35   131 |
igs | igs 2966 |    11    10    32 |    15    14    41 |    70    28    84 |
jpl | jpl 2771 |    14    10    29 |    15    14    41 |    90    29   108 |
mit | mit 2976 |    60   122   601 |    18    13    44 |    35    69    46 |


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 6.1657   GPS week: 1657   MJD: 55843.500-55849.500

                                                         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 |      38     -16      11     185      0 |       7     15
            |      27      18      73     121      5 |       2
emr   uuuuu |      57      12      58      48     -1 |      49     51
            |      35      22      65     131      9 |       5
esa   uuuuu |     -12     -17     -22      28     -1 |      13     19
            |      24      12      46     122      6 |       1
gfz   uuuuu |     -69      -8     -69       0      0 |      -3     15
            |      32      16      65      42      4 |       2
grg   uuuux |      57     -20      29     121     -4 |       1      9
            |      23      35      59      75     24 |       1
igr   xxxxx |     -16      24     -36      79     -3 |      -2     12
            |      23      15      33      52     12 |       2
irf   xxxxx |     -12      17      -4     -53      1 |      -6     15
            |      14       6      25      50      5 |       3
jpl   uuuuu |      20     -42       8     224     10 |      59     62
            |      32      25      67     116      8 |       3
mit   uuuuu |     -29      11      24    -195     -2 |       4     17
            |      28      12      62      94      8 |       5
ngs   uuuxu |      36      78     110      57      2 |       2     10
            |      60      36      67     295      3 |       3
sio   uuuuu |       0     -53    -216    -178    -16 |      37     42
            |      28      19      77      48      6 |       6


Table 7.1657.0   GPS week: 1657   Day: 0   MJD: 55843.500

                                                         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       0      28     131      3 |       9     13
emr   uuuuu |      12     -11      35    -114    -11 |      57     59
esa   uuuuu |      -1     -33     -65     177      5 |      14     18
gfz   uuuuu |     -43       7     -70      49      6 |      -2     12
grg   uuuux |      46     -49     105      85     -5 |       0     10
igr   xxxxx |      -5      24     -32      21      8 |      -4     12
irf   xxxxx |     -36       5      22    -131     -1 |      -3     10
jpl   uuuuu |     -12     -40     -37      76     23 |      57     58
mit   uuuuu |     -84     -11     123    -301     -7 |      12     18
ngs   uuuxu |     115     143      39     -91     -3 |       6     10
sio   uuuuu |     -40     -79    -106    -241    -22 |      47     48

Table 7.1657.1   GPS week: 1657   Day: 1   MJD: 55844.500

                                                         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 |      52     -32      75      44      1 |      10     14
emr   uuuuu |       4      40      56    -135     -7 |      55     56
esa   uuuuu |      -3     -12     -70     160      9 |      15     19
gfz   uuuuu |     -55     -27     -64       9      0 |      -2     12
grg   uuuux |      71     -11      57     168     19 |       0     10
igr   xxxxx |       2      -2     -72      24     10 |      -2     12
irf   xxxxx |     -17      21     -30     -84     -4 |      -3     10
jpl   uuuuu |      36     -35      27      77      6 |      60     62
mit   uuuuu |     -38      26      -3    -278    -13 |      10     15
ngs   uuuxu |      49      57     239    -378      3 |       5      9
sio   uuuuu |     -24     -41    -264    -152    -24 |      45     46

Table 7.1657.2   GPS week: 1657   Day: 2   MJD: 55845.500

                                                         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 |      34       3     -45     185     -7 |       8     14
emr   uuuuu |      80      20      15      84    -10 |      50     52
esa   uuuuu |      29      -6       3      71     -3 |      14     18
gfz   uuuuu |     -20     -30     -13      54     -4 |      -4     14
grg   uuuux |      39      39     -65      19     35 |       0     10
igr   xxxxx |      18      29     -17      61      9 |      -2     12
irf   xxxxx |       3      14      17     -56     -4 |      -6     14
jpl   uuuuu |     -12     -32      -6     192      7 |      58     61
mit   uuuuu |      -7      17      12    -251     -9 |       5     16
ngs   uuuxu |     -77      37     115    -224      7 |       3      9
sio   uuuuu |      -4     -69    -194    -160    -21 |      40     43

Table 7.1657.3   GPS week: 1657   Day: 3   MJD: 55846.500

                                                         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 |      63     -40     -38      73     -4 |       6     16
emr   uuuuu |      62      27      84      16     -1 |      45     48
esa   uuuuu |     -18     -22      35      51     -6 |      12     19
gfz   uuuuu |     -72      -8       6     -24      1 |      -7     17
grg   uuuux |      44       1       9      89    -12 |       3      8
igr   xxxxx |     -26      14     -40     118     -6 |      -2     13
irf   xxxxx |     -10      18     -17     -62      5 |     -10     17
jpl   uuuuu |      46     -33      55     231     13 |      56     58
mit   uuuuu |     -21      18     -65    -237      3 |       0     16
ngs   uuuxu |      28      67      41     249      0 |      -1      9
sio   uuuuu |       6     -63    -290    -114    -11 |      33     39

Table 7.1657.4   GPS week: 1657   Day: 4   MJD: 55847.500

                                                         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       0      -3     290      3 |       5     16
emr   uuuuu |      83      -3      97     113      6 |      44     47
esa   uuuuu |     -32      -3     -41     -26     -1 |      12     19
gfz   uuuuu |    -108      -3     -44     -36      3 |      -6     17
grg   uuuux |      37     -39      48      83    -32 |       2      8
igr   xxxxx |     -42      18       4      72     -8 |      -2     12
irf   xxxxx |     -18      21     -10     -25      8 |      -9     17
jpl   uuuuu |      47     -85      36     343     15 |      58     61
mit   uuuuu |     -31       7      22    -134      8 |       0     16
ngs   uuuxu |      80      88      93     203     -3 |      -1      9
sio   uuuuu |      -2     -57    -286    -152    -10 |      33     39

Table 7.1657.5   GPS week: 1657   Day: 5   MJD: 55848.500

                                                         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 |      72     -11     -74     182     -2 |       6     17
emr   uuuuu |      89      25     -42     187      2 |      45     47
esa   uuuuu |     -11     -10      35    -123     -7 |      13     20
gfz   uuuuu |     -86      14    -115       3     -3 |      -3     17
grg   uuuux |     103     -17     -23     250    -23 |       1      9
igr   xxxxx |     -12      40      -7     167    -20 |       0     12
irf   xxxxx |      -7      20     -34     -49      3 |      -7     18
jpl   uuuuu |     -17     -65      94     354     11 |      61     65
mit   uuuuu |     -26       6      -3    -105      3 |       1     18
ngs   uuuxu |      23      54     110     179      2 |       1     10
sio   uuuuu |      22     -41    -248    -244    -14 |      32     38

Table 7.1657.6   GPS week: 1657   Day: 6   MJD: 55849.500

                                                         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 |      37     -34     134     389      7 |       7     18
emr   uuuuu |      66     -17     163     183     12 |      46     49
esa   uuuuu |     -46     -33     -52    -118     -6 |      15     22
gfz   uuuuu |     -99      -7    -185     -59     -4 |      -1     17
grg   uuuux |      57     -68      74     150    -10 |       1      9
igr   xxxxx |     -46      41     -85      89    -13 |       1     12
irf   xxxxx |       4      18      24      33      2 |      -4     18
jpl   uuuuu |      50      -8    -110     291     -4 |      66     69
mit   uuuuu |       1      11      85     -59      2 |       4     19
ngs   uuuxu |      31      99     131     457      4 |       4     12
sio   uuuuu |      45     -23    -121    -181    -12 |      31     37



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