[IGSREPORT-20007] Wk 1645 IGS Final Orbits

Jim Ray igs.acc at noaa.gov
Thu Aug 4 06:06:04 PDT 2011


Author:  AC Coordinator / NOAA NGS

sum-file Version 2.0
Final IGS Orbit Combination - Week 1645   (Jul 17, 2011 - Jul 23, 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:

igs1645[0-6].sp3  IGS GPS ephemeris files in SP3 format.
igs1645[0-6].clk  IGS GPS satellite and station clocks in clock RINEX format.
igs1645[0-6].cls  IGS GPS clock combination summary report.
igs16457.erp      Earth Rotation Parameters (ERP) and their rates as well as
                  Universal Time (UT1-UTC) and Length Of Day (LOD) associated 
                  with IGS ephemerides.
igs16457.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   | 26 26
                0  |  ESA   | 21 21 BJFS DRAG UNSA
                0  |  GFZ   | 7 13 21 26 FAA1 YAKT
                0  |  JPL   | 25 26
                0  |  MIT   | 26 30 21 26 30 SYOG
                1  |  COD   | KOSG
                1  |  EMR   | 26 30 26 30
                1  |  ESA   | 21 21
                1  |  GFZ   | 7 13 MDVJ
                1  |  GRG   | NKLG SANT
                1  |  JPL   | 25 26
                1  |  MIT   | 26 30 26 30 IENG MAW1 IENG MAW1
                2  |  COD   | WROC WROC
                2  |  EMR   | 26 26
                2  |  ESA   | IRKJ UNSA
                2  |  GFZ   | MDVJ
                2  |  GRG   | LHAZ SANT
                2  |  JPL   | 25 26
                2  |  MIT   | 26 26 MDVJ MDVJ
                3  |  COD   | NTUS CHUR
                3  |  EMR   | 21 26 21 26 USNO
                3  |  ESA   | YELL NTUS UNSA
                3  |  GFZ   | KERG MDVJ
                3  |  GRG   | CEDU
                3  |  JPL   | 3 21 25 26
                3  |  MIT   | 3 26 30 3 21 26 30 DAV1 BAKO MAW1 NTUS USNO
                4  |  COD   | MDVJ MDVJ
                4  |  EMR   | 26 26
                4  |  ESA   | UNSA
                4  |  GFZ   | HARB MATE MDVJ
                4  |  GRG   | CONZ IRKJ
                4  |  JPL   | 3 15 25 26
                4  |  MIT   | 3 6 24 26 30 3 6 24 26 30 NTUS NTUS
                5  |  EMR   | 26 YELL YELL
                5  |  ESA   | DARW UNSA
                5  |  GFZ   | ISPA
                5  |  GRG   | CONZ IRKJ
                5  |  JPL   | 15 25 26
                5  |  MIT   | 26 30 26 30 MDVJ SCH2 MDVJ SCH2
                6  |  COD   | TIXI
                6  |  EMR   | 3 3 26 CHUR CHUR
                6  |  ESA   | CEDU IRKJ UNSA
                6  |  GFZ   | CAS1 MDVJ YAKT
                6  |  GRG   | IRKJ NKLG SANT
                6  |  JPL   | 3 25 26 CAS1
                6  |  MIT   | 3 26 3 26 CAS1 NTUS CAS1 MDVJ

 5. 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
               ----+--------+---------------
                4  |  COD   |   1
                5  |  COD   |   1

 6. Velocity changes were estimated to alleviate the effects of modeling
    problems, experienced by all centres,in the Long Arc (LA) process.
    
             Velocity changes per day and affected satellites:
    
               Day |  0 |  1 |  2 |  3 |  4 |  5 |  6 |
           --------+----+----+----+----+----+----+----+
           PRN G01 |    |    |    |  4 |  4 |  4 |  4 |
           PRN G17 |  2 |  2 |    |    |    |    |    |

 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     .7     .8     -16     -9      7     .0 
       EMR  |   -2.1   -1.3   -2.4       6      5      3     .32
       ESA  |     .8   -4.4    9.6     -31    -32     67     .13
       GFZ  |   -1.7     .0     .8     -16     38     11     .01
       GRG  |    6.1   -1.7   16.0       2      2      4    -.14
       JPL  |     .3    4.4   -8.0     -10     -9     74   -1.21
       MIT  |    3.8   -5.2   15.2      -6      7    -12    -.06
       NGS  |    2.0    1.3   14.3     -38      7     -5     .10
       SIO  |    3.5   -2.9  -11.9     -47   -128     -3    -.03


 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 1.1645.a). It also displays the computed satellite
position sigmas for the combined orbits (table 1.1645.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 2.1645.[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 3.1645.[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 5.1645.0-6).

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 1645 summary.                       (Jul 17, 2011 - Jul 23, 2011)

Table 1.1645.a   GPS week: 1645   MJD: 55759.000-55765.000

         Mean and standard deviations of transformation parameters to the 
         combined IGS orbit.
         WRMS - orbit RMS weighted by the SP3 header accuracy codes.
         STA  - Mean number of stations in the daily solutions.
   
CENT STA|   DX    DY    DZ    RX    RY    RZ   SCL  RMS  WRMS|    TOFT   TDRFT   SDEV    RMS
        |  [mm]  [mm]  [mm] [uas] [uas] [uas] [ppb] [mm] [mm]|    [ps]  [ps/d]   [ps]   [ps]
--------+----------------------------------------------------+------------------------------
cod  254|    0     0    -2     4    -9    11  -.22    8    7 |    -535     807     14     82
        |    0     0     0    11    13    19   .03           |     784    1123
emr   97|    0    -2    -8   -45    10     7   .34   17   17 |     337    -472     16    113
        |    1     0     1    33    11    17   .04           |    1051     741
esa  126|    1     0     2   -13    60     1   .27    7    7 |    -344   -1151     14    153
        |    0     0     0     9    12     7   .03           |     574    1421
gfz  198|    0     0     1   -21  -118   -17  -.23   10   10 |      18       8     23    136
        |    0     0     2    74    50    13   .03           |     206     459
grg  130|    3     0    10   -38    39     3   .64   17   16 |     165    -519     46    235
        |    2     0     2    30    74     9   .03           |     986     653
igr  n/a|    0     0     0   -25   -17   -41  -.08    5    5 |    3077    -503     19    105
        |    0     0     1    21    14    15   .02           |     811     724
jpl  144|   -1    -2    -8   -12     2     4   .56   18   17 |    -132    -667     20    319
        |    1     1     2    12    10    78   .04           |    1009     651
mit  271|    0     0     0   -32   -71   -18  -.34   14   11 |     730    -399     24    186
        |    1     1     1    17    15     9   .03           |    1024    1559
ngs  230|    0     0     2    69   -29   -15  -.19    9    8 |    1429  -36747   2132   3583
        |    0     0     1    37    32    14   .03           |    5321   99441
sio  251|    0     2    -3    44   231    20  -.23   17   16 |     ---     ---    ---    ---
        |    0     1     1    21    14     8   .03           |     ---     ---


Table 1.1645.b   GPS week : 1645   MJD: 55759.000-55765.000   

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

              Day of GPS week
 PRN  |    0    1    2    3    4    5    6 |  Remarks
------+------------------------------------+------------------------------------------
   1  |  ---  ---  ---    0    0    0   48 |
   2  |    4    5    5    5    5    5    5 |
   3  |    4    5    4    5    6    6    6 |
   4  |    4    4    4    4    4    4    4 |
   5  |    4    5    4    5    4    5    5 |
   6  |    4    4    4    4    6    6    5 |
   7  |    5    5    4    4    4    4    4 |
   8  |    4    4    4    3    3    3    3 |
   9  |    3    3    4    3    5    4    4 |
  10  |    4    4    4    4    4    4    4 |
  11  |    4    4    4    4    4    4    3 |
  12  |    4    5    4    4    5    5    4 |
  13  |    4    6    4    4    4    4    4 |
  14  |    4    4    4    4    4    4    4 |
  15  |    4    4    5    4    5    5    5 |
  16  |    4    5    5    5    5    5    4 |
  17  |    4    6    5    4    4    5    4 |
  18  |    5    5    4    4    5    5    5 |
  19  |    4    4    4    4    5    4    4 |
  20  |    4    4    4    4    4    4    4 |
  21  |    4    4    4    4    4    4    4 |
  22  |    4    4    4    4    5    4    4 |
  23  |    4    4    4    4    4    5    4 |
  24  |    3    4    4    4    3    4    3 |
  25  |    4    5    4    4    5    5    4 |
  26  |    6    6    5    8    7    7    6 |
  27  |    3    4    4    4    5    5    4 |
  28  |    4    4    4    4    4    4    4 |
  29  |    5    4    4    4    5    5    4 |
  30  |    6    6    5    5    6   10   10 |
  31  |    4    5    4    5    4    5    4 |
  32  |    3    4    4    3    4    4    3 |



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 2.1645.0   GPS week: 1645   Day: 0   MJD: 55759.000                            

CENT STA|   DX    DY    DZ    RX    RY    RZ   SCL  RMS  WRMS|    TOFT   TDRFT   SDEV    RMS
        |  [mm]  [mm]  [mm] [uas] [uas] [uas] [ppb] [mm] [mm]|    [ps]  [ps/d]   [ps]   [ps]
--------+----------------------------------------------------+------------------------------
cod  254|    0     1    -3     0     9    18  -.23    7    7 |      84    -155     11     78
        |                     19   -19                       |
emr   97|   -1    -1    -6     2    22    34   .40   18   18 |    2010    -667     17    120
        |                    -45   -48                       |
esa  126|    0     0     1   -18    52     9   .23    7    7 |   -1305    1585     13    140
        |                     51    -3                       |
gfz  198|    0    -1     1   -19  -148    -9  -.25   11   11 |     103     193     23    142
        |                     16    96                       |
grg  130|    3     0     8   -78    15     9   .62   14   13 |    1514    -426     54    199
        |                     50   -33                       |
igr  n/a|    0     0     0     9     0   -31  -.10    5    5 |    4130    -434     19    136
        |                      7    19                       |
jpl  144|   -1    -3    -4     1    20   -79   .61   17   16 |    1214    -501     18    313
        |                    -50    -3                       |
mit  284|    1    -1     0   -34   -77   -15  -.32   12   11 |    1100    -870     29    229
        |                      2    22                       |
ngs  230|    0     0     2    92   -22   -18  -.21    9    7 |   13369 -262247   1914   3242
        |                   -127     9                       |
sio  251|    0     0    -2    55   218     5  -.20   18   17 |     ---     ---    ---    ---
        |                    -41  -134                       |

Table 2.1645.1   GPS week: 1645   Day: 1   MJD: 55760.000                            

CENT STA|   DX    DY    DZ    RX    RY    RZ   SCL  RMS  WRMS|    TOFT   TDRFT   SDEV    RMS
        |  [mm]  [mm]  [mm] [uas] [uas] [uas] [ppb] [mm] [mm]|    [ps]  [ps/d]   [ps]   [ps]
--------+----------------------------------------------------+------------------------------
cod  254|    0     1    -3    18   -14     7  -.24   10    8 |   -1074     110     14     74
        |                    -10     3                       |
emr   97|    0    -1    -8    -7    -1     0   .37   18   18 |    1650   -2020     15    125
        |                    -12   -56                       |
esa  126|    1     0     1   -21    44     0   .27    8    8 |     361   -2282     16    157
        |                     17    -9                       |
gfz  198|    0    -1     2  -100   -70   -33  -.21   11   11 |    -189     148     24    136
        |                     29    90                       |
grg  130|    2     0    10   -23   -16   -10   .62   15   13 |    1581   -1908     44    220
        |                    -21   -24                       |
igr  n/a|    0     0     1    -1   -10   -48  -.09    5    5 |    4277   -1891     21     96
        |                      3     8                       |
jpl  144|   -2    -1    -7     2     9   103   .54   18   17 |    1324   -1944     19    307
        |                     16    69                       |
mit  284|    0    -1     1   -36   -61   -17  -.32   12   11 |     -17    -134     22    164
        |                     -2    18                       |
ngs  230|    0     1     1    85   -23   -20  -.20    9    9 |   -1091      88   2458   3875
        |                     -8    13                       |
sio  251|   -1     1    -2    55   242    27  -.21   17   16 |     ---     ---    ---    ---
        |                    -39  -129                       |

Table 2.1645.2   GPS week: 1645   Day: 2   MJD: 55761.000                            

CENT STA|   DX    DY    DZ    RX    RY    RZ   SCL  RMS  WRMS|    TOFT   TDRFT   SDEV    RMS
        |  [mm]  [mm]  [mm] [uas] [uas] [uas] [ppb] [mm] [mm]|    [ps]  [ps/d]   [ps]   [ps]
--------+----------------------------------------------------+------------------------------
cod  254|    0     1    -2     0   -17    21  -.26    8    7 |    -674     573     15     90
        |                     37   -10                       |
emr   97|    0    -2    -7   -55    -1   -21   .28   18   18 |    -667     -97     15    133
        |                      5   -64                       |
esa  126|    1     0     2   -11    61     0   .25    7    7 |     177   -2164     12    142
        |                     22   -24                       |
gfz  198|    0     0     0    44   -56    -7  -.25   11   10 |      70     102     25    132
        |                    -22   102                       |
grg  130|    1     0     9   -65    -2     8   .66   13   12 |    -331    -122     42    312
        |                     35   -64                       |
igr  n/a|    0     0    -1   -24   -34   -33  -.10    5    5 |    2401    -231     19    127
        |                     14    44                       |
jpl  144|   -3     0    -5   -22    -8   -71   .51   18   17 |    -590    -547     19    321
        |                      8     3                       |
mit  284|    0     0     0   -21   -74   -24  -.33   13   12 |     661    -950     25    176
        |                      2    23                       |
ngs  230|    0     0     0    33   -55     3  -.20    8    6 |    -696     577   1933   3492
        |                    -49    42                       |
sio  251|   -1     1    -2    63   219    18  -.27   17   18 |     ---     ---    ---    ---
        |                    -23  -126                       |

Table 2.1645.3   GPS week: 1645   Day: 3   MJD: 55762.000                            

CENT STA|   DX    DY    DZ    RX    RY    RZ   SCL  RMS  WRMS|    TOFT   TDRFT   SDEV    RMS
        |  [mm]  [mm]  [mm] [uas] [uas] [uas] [ppb] [mm] [mm]|    [ps]  [ps/d]   [ps]   [ps]
--------+----------------------------------------------------+------------------------------
cod  254|    0     0    -2     7   -28   -20  -.22    7    7 |   -1774    2813     15     83
        |                     19     1                       |
emr   97|    0    -2    -7   -68    22    20   .35   17   17 |    -321    -141     17    108
        |                     14   -75                       |
esa  126|    1    -1     2     0    59    -6   .27    8    7 |    -298   -1875     14    148
        |                     29   -15                       |
gfz  198|   -1     0     1     1   -99    -3  -.22    9    8 |     271    -337     22    137
        |                     -1    93                       |
grg  130|    5     0    10   -63    24    -7   .64   15   14 |    -129    -518     38    250
        |                     32  -134                       |
igr  n/a|    0     0     0   -49   -36   -37  -.08    5    5 |    2819    -455     19     98
        |                     14    31                       |
jpl  144|    1    -1    -8    -7    -4    62   .55   19   18 |    -436    -567     22    339
        |                     57   -56                       |
mit  284|    0     0     0   -24   -70   -20  -.34   15   11 |    -455    1171     22    205
        |                     -7    28                       |
ngs  230|    0     0     1    40   -57     2  -.13   10    8 |   -1790    2816   2409   3499
        |                    -64    -1                       |
sio  251|    0     2    -3    52   239    34  -.20   15   14 |     ---     ---    ---    ---
        |                    -33  -142                       |

Table 2.1645.4   GPS week: 1645   Day: 4   MJD: 55763.000                            

CENT STA|   DX    DY    DZ    RX    RY    RZ   SCL  RMS  WRMS|    TOFT   TDRFT   SDEV    RMS
        |  [mm]  [mm]  [mm] [uas] [uas] [uas] [ppb] [mm] [mm]|    [ps]  [ps/d]   [ps]   [ps]
--------+----------------------------------------------------+------------------------------
cod  254|    0     0    -2   -13    -7    44  -.17    9    8 |     668    -405     19     99
        |                     21    41                       |
emr   97|   -1    -4   -10   -91    -3     3   .32   16   16 |     -40    -487     17     95
        |                     29   -45                       |
esa  126|    1     0     3   -20    52    -7   .32    8    8 |    -148   -2107     16    161
        |                     37     1                       |
gfz  198|    0     0     5    71  -128   -14  -.17   10    9 |     115    -769     26    141
        |                     -9    60                       |
grg  130|    7    -1     5   -25   199    15   .68   28   25 |    -231    -526     57    220
        |                      6  -336                       |
igr  n/a|    0     1     1   -47    -5   -61  -.04    5    5 |    2916    -772     19     90
        |                     -9    27                       |
jpl  144|    0    -3    -9   -31     4   -16   .59   20   19 |    -434    -966     22    329
        |                    -26   100                       |
mit  284|   -1     1     0   -18   -48   -29  -.34   14   10 |    2378   -2792     25    190
        |                    -20    41                       |
ngs  230|    0     0     2    27   -51   -19  -.17    9    7 |     658    -410   2255   3778
        |                    -17   -56                       |
sio  251|   -2     3    -4    31   244    20  -.22   17   15 |     ---     ---    ---    ---
        |                    -34  -123                       |

Table 2.1645.5   GPS week: 1645   Day: 5   MJD: 55764.000                            

CENT STA|   DX    DY    DZ    RX    RY    RZ   SCL  RMS  WRMS|    TOFT   TDRFT   SDEV    RMS
        |  [mm]  [mm]  [mm] [uas] [uas] [uas] [ppb] [mm] [mm]|    [ps]  [ps/d]   [ps]   [ps]
--------+----------------------------------------------------+------------------------------
cod  254|    0     0    -3     0     7     4  -.24    9    8 |    -561    1419     14     79
        |                     16   -18                       |
emr   97|   -2    -2   -11   -62    16    11   .34   16   16 |      63    -124     17    103
        |                     22   -34                       |
esa  126|    1     0     2   -20    73     3   .25    8    8 |    -363   -1005     18    161
        |                     19    -1                       |
gfz  198|    0     0     3   -13  -205   -39  -.25   11   10 |    -334     702     25    131
        |                     18    20                       |
grg  130|    2     0    12   -21    52     2   .58   16   16 |    -245    -241     48    223
        |                      7  -159                       |
igr  n/a|    0     0     2   -27    -9   -19  -.08    5    5 |    2806    -240     21     98
        |                      8    29                       |
jpl  144|   -2    -3    -9   -15     3    87   .60   17   16 |    -629    -257     22    323
        |                     76  -125                       |
mit  284|    0     0    -2   -23   -99   -21  -.38   16   12 |    -135    1899     23    144
        |                    -17    52                       |
ngs  230|   -1     0     3    78    37   -36  -.22   11    9 |     -97     782   1797   3274
        |                    -28   -77                       |
sio  251|   -1     2    -5    51   211    16  -.27   19   16 |     ---     ---    ---    ---
        |                    -42  -121                       |

Table 2.1645.6   GPS week: 1645   Day: 6   MJD: 55765.000                            

CENT STA|   DX    DY    DZ    RX    RY    RZ   SCL  RMS  WRMS|    TOFT   TDRFT   SDEV    RMS
        |  [mm]  [mm]  [mm] [uas] [uas] [uas] [ppb] [mm] [mm]|    [ps]  [ps/d]   [ps]   [ps]
--------+----------------------------------------------------+------------------------------
cod  254|    0     0    -3    19   -12     6  -.22    7    7 |    -416    1295     13     71
        |                      7    -9                       |
emr   97|    1    -1    -7   -34    15     5   .33   18   18 |    -334     231     14    110
        |                      6   -59                       |
esa  126|    1     0     1     0    79    11   .28    6    6 |    -838    -213     15    162
        |                     13    -9                       |
gfz  198|    0     0    -1  -136  -124   -13  -.25   10    9 |      90      22     22    137
        |                     11    24                       |
grg  130|    1     0    13     6     1     7   .67   16   15 |    -998     104     42    224
        |                    -54   -20                       |
igr  n/a|    0     0     2   -34   -24   -56  -.09    5    5 |    2194     496     20     96
        |                     35    11                       |
jpl  144|   -2     0   -11   -13    -5   -51   .55   18   17 |   -1374     111     20    307
        |                    -16   -47                       |
mit  284|   -1     0     0   -69   -68     0  -.38   14   10 |    1582   -1121     24    195
        |                     -4    32                       |
ngs  230|    0     0     2   129   -35   -21  -.18    9    6 |    -350    1162   2164   3923
        |                    -96     7                       |
sio  251|    0     2    -3     1   245    20  -.24   19   16 |     ---     ---    ---    ---
        |                    -14  -124                       |

       
       
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 3.1645.0   GPS week: 1645   Day: 0   MJD: 55759.000                            

        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  |    8   13    8   11   10    6   15   12    9   29    4 |    20   24   20   27   19   20   22   25   24   21    19
   3  |    8   18    5    9   11    5   14    6   10   26    4 |   104  104  101  105   99  101  101  104  103   98   102
   4  |    9   11    6   10   11    6    9   11    9   19    3 |    28   37   37   33   40   33   34   38   31   32    33
   5  |    7   20    8   13   11    6   20    8   10   23    4 |    18   27   20   23   25   19   27   23   23   22    19
   6  |    8   18    6   10    9    4   16    6   11   26    4 |    29   37   33   31   35   32   41   33   33   42    32
   7  |    7   19    9   22   18    5   19   10    6   15    4 |    14   30   22   25   28   17   27   19   13   16    17
   8  |    6   15    9    8   14    4   10   12    5   14    3 |    17   27   24   18   23   19   25   21   17   19    18
   9  |    8   14    5   11   11    4    9   10    9   11    3 |    17   22   22   17   21   18   21   21   22   19    18
  10  |    8   13    5   10   11    6    9   17    9   24    4 |    27   34   33   36   39   29   31   43   28   34    31
  11  |    8   14    5   11   11    4   15   14    9   16    3 |    35   38   39   37   41   37   37   39   34   36    36
  12  |    7   19    8   15   19    4   21   11    6   10    4 |    16   28   16   16   27   15   29   21   16   19    15
  13E |    5   15    6    9   16    5   20   12   10   11    3 |    29   33   30   31   38   29   35   35   31   34    30
  14E |    5   13    6    9   13    3   24    8    7   16    3 |    18   23   21   19   20   18   25   21   22   22    18
  15E |    5   24    8   10   11    4   19   12   11   10    4 |    13   25   19   16   14   15   21   19   19   15    14
  16  |    8   24    6   13   15    4   20   11    9   16    4 |    20   31   22   14   26   18   29   15   17   18    18
  17  |    8   15    8    7   19    4   16    9    9   13    3 |    60   71   76   75   71   75   72   76   74   77    71
  18  |    7   25    8    9   13    4   22   10    8   28    4 |    18   33   21   19   23   19   33   22   20   24    18
  19  |    6   19    4    8   15    6   20   11   10   17    4 |    21   29   20   16   23   17   28   22   18   23    19
  20  |    9   17    6   12    9    3   16    9    9   17    3 |    24   25   24   25   22   23   25   22   22   21    22
  21  |    6   19    7    9   12    7   15   13    6   21    4 |    20   28   24   27   27   23   25   23   22   20    22
  22  |    6   22    8    9   12    5   20   12    6   20    4 |    16   29   21   21   26   18   30   22   18   19    18
  23E |    5   16    5   13   12    4   18    9    9   15    3 |    16   25   19   19   21   18   23   13   17   21    16
  24  |    6   14    5    9   11    4    8   11    9   15    3 |    26   28   27   28   28   26   24   31   22   27    26
  25  |    7   18    6    7   20    5   24   12    9   14    4 |    15   27   20   18   32   18   38   20   21   22    18
  26E |   12   15    9   16   17    8   19   28   13   15    5 |    33   31   29   30   31   32   34   26   34   32    28
  27  |    8   13    5   12   12    4   10    9   10    9    3 |    15   21   19   16   20   16   23   20   19   17    17
  28  |    6   17    7   10   22    4   18    9    8   14    4 |    14   25   18   12   33   14   27   17   15   17    15
  29  |    6   26   10    8   16    3   22    9   11   12    4 |    18   33   17   16   20   17   26   20   17   24    16
 X30  |   11   22   15   10   12   10  ---   16  ---  ---    6 |    14   25   18   19   19   16  ---   19  ---  ---    14
  31  |    6   20    7    9   16    4   17    7   10   16    4 |    17   28   20   20   30   16   26   20   17   19    17
  32  |    6   17    4    8    9    4   15    7   11   12    3 |    16   20   22   23   23   18   20   20   19   18    19
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |    7   18    7   11   14    5   17   12    9   18      |T   24   32   27   26   30   25   31   28   26   27    25
 WRMS |    7   18    7   11   13    5   16   11    7   17      |NE  21   30   25   24   28   22   29   25   23   24    22
 MEDI |    7   17    6   10   12    4   17   11    9   15      |MD  18   28   22   21   26   18   27   22   21   21    18

Table 3.1645.1   GPS week: 1645   Day: 1   MJD: 55760.000                            

        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   18   11   18   10    4   17   12   10   28    5 |    17   24   18   33   15   19   22   22   19   17    17
   3  |   15   18    6    8   14    6   16    7    8   25    4 |    91   95   91   92   86   94   92   92   96   93    92
   4  |    8   12    6   11    9    4   11   14    9   19    3 |    24   29   30   27   31   26   29   28   25   27    25
   5  |    9   20    6   10   12    6   22   11   15   20    4 |    18   24   16   21   18   20   23   23   28   19    18
   6  |    7   18    4    9    9    4   16    8    9   24    3 |    27   33   31   30   36   27   34   31   27   37    29
   7  |    6   19    7   23   17    4   19    8   12   15    5 |    14   26   19   25   24   14   22   19   16   16    15
   8  |    7   14    7    8   13    4   10   13    8   13    3 |    20   27   22   24   20   19   26   26   23   25    21
   9  |   10   11    7    7   10    4   11   11    7   11    3 |    18   23   19   22   20   18   22   25   23   24    20
  10  |    6   14    6    8   11    5   10   14    9   21    3 |    22   24   25   20   27   24   19   31   25   28    22
  11  |    8   16    7    8   11    4   16   12    6   13    3 |    25   28   24   26   28   25   27   29   24   26    24
  12  |    6   22   10   16   22    4   24   12    8   12    5 |    17   32   21   19   27   16   29   22   20   19    17
  13E |   10   17    9   11   22    6   21   28   10   23    5 |    38   40   36   33   37   38   42   47   37   45    37
  14E |    5   12    6    6   16    5   24    8    6   12    3 |    23   25   26   23   28   24   28   23   28   23    23
  15E |    8   17    8   11    8    8   24   13    6   13    4 |    20   29   22   22   21   24   24   24   24   20    21
  16  |    7   26    7   15   17    7   23   12    8   16    4 |    15   28   19   20   23   15   27   13   16   15    15
  17  |   33   18    8   11   22    8   17    8   10   15    6 |    53   73   71   73   76   74   70   71   75   71    69
  18  |    8   20    9   13   14    5   23    8   10   26    4 |    16   27   19   21   21   16   28   19   18   18    15
  19  |    7   19    8    8   18    5   20    9    5   14    4 |    19   28   19   16   25   15   26   19   17   21    17
  20  |    8   18    7    9   11    5   17   10    8   17    3 |    21   20   16   18   18   17   20   17   18   14    16
  21  |    5   17    9    7   12    4   19    8    6   22    4 |    24   25   26   25   22   23   25   28   26   23    23
  22  |    7   18    7    9   12    4   20   11    6   18    4 |    12   25   15   15   20   13   26   18   14   13    13
  23E |    6   18    6   13   22    6   17    9    8   13    4 |    14   21   15   20   19   15   20   16   18   16    14
  24  |    6   15    5    6   15    4   11   12   10   13    3 |    41   41   40   45   40   42   37   44   41   40    41
  25  |    8   20    8   12   18    4   20   12    9   13    4 |    18   30   22   21   30   21   38   26   22   26    21
  26E |   16   16   10   15   17    7   19   27   16   21    6 |    34   39   32   42   34   38   38   57   46   47    38
  27  |   11   12    7    9   11    5   12   12    6   10    3 |    15   22   18   21   17   16   23   25   22   23    18
  28  |    6   15    8    6   21    4   19   10    5   14    3 |    15   27   20   13   29   18   24   19   20   17    17
  29  |    8   26    7    8   16    6   22    9    9   11    4 |    19   33   19   16   22   19   27   23   21   24    19
 X30  |    7   29   12   11   14   12  ---   15  ---  ---    6 |    12   34   18   20   16   20  ---   18  ---  ---    16
  31  |    7   19   12    8   18    3   20    7   12   16    4 |    19   28   27   22   31   20   27   20   26   21    21
  32  |   10   16    5    8   12    3   13    9    9   12    3 |    15   17   16   20   19   16   17   18   21   15    15
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |   10   18    8   11   15    5   18   12    9   17      |T   23   31   26   27   28   25   30   28   27   27    24
 WRMS |    8   18    8   11   13    5   17   11    9   16      |NE  20   28   23   24   25   21   27   25   24   23    21
 MEDI |    7   18    7    9   14    5   19   11    8   15      |MD  19   28   21   22   24   20   26   23   23   23    20

Table 3.1645.2   GPS week: 1645   Day: 2   MJD: 55761.000                            

        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  |    8   18    7   14    9    3   16   12    6   29    4 |    19   22   15   28   15   17   22   22   18   17    16
   3E |    9   15    8    8   11    6   14    8   10   22    4 |   106  111  106  113  102  107  109  111  112  104   108
   4  |    9   15    6   13    9    6   12   16   11   22    4 |    28   34   35   34   39   33   36   35   34   33    32
   5  |    6   17    7   13   11    5   21   14    8   19    4 |    18   22   16   21   18   16   23   24   21   23    16
   6  |    7   18    5    7   10    4   15   10   11   25    4 |    29   35   31   31   36   28   36   28   34   37    31
   7  |    7   22    8   12   14    5   19    9    5   13    4 |    16   30   20   23   24   16   26   18   14   18    16
   8  |    6   10    5   26   14    4    9   14    6   14    4 |    22   27   23   28   24   22   24   30   20   28    21
   9  |    8   12    8    6    8    3   13   15    6   14    3 |    17   24   18   20   18   18   23   29   20   25    18
  10  |    6   13    7    9   14    5    5   16    9   21    3 |    22   28   23   26   30   21   26   31   25   29    23
  11  |    6   13    7   11   11    5   16   12    7   15    3 |    32   33   32   31   39   31   37   33   30   30    31
  12  |    6   22    9   13   14    6   23   12    6   11    4 |    15   29   17   14   26   14   28   22   17   19    14
  13E |    7   19    7    9   14    4   21   16    8   15    4 |    24   29   23   22   31   20   31   25   20   27    22
  14E |    7   14    7    8   13    4   23   11    8   10    3 |    15   23   20   16   25   15   26   15   17   16    16
  15E |    6   25    8   13   11    6   25   12    9   13    4 |    18   26   17   17   20   15   26   15   15   15    14
  16  |    7   26    6   13   13    7   24   15   12   16    4 |    17   32   21   13   25   17   34   15   19   16    18
  17  |   21   15    7   10   17   14   15   13   13   18    5 |    47   57   59   58   61   60   56   60   60   63    55
  18  |    7   22    7    9   12    5   23   10    7   22    4 |    18   29   18   17   25   17   31   19   19   19    16
  19  |    7   21    6    8   17    3   18    9    6   14    3 |    18   31   20   17   25   17   26   21   18   22    17
  20  |    5   21    5   11    9    5   16   11    7   17    3 |    21   26   19   23   22   20   26   19   23   21    19
  21  |    6   17    5    8   11    4   22   11    8   20    4 |    21   26   24   21   24   20   28   19   22   19    20
  22  |    7   20    6    8   12    5   20   12    9   16    4 |    16   27   18   18   26   17   29   21   18   15    16
  23E |    5   20    5   13   17    3   17   10    6    9    3 |    18   29   20   22   27   20   28   22   22   22    20
  24  |    8   12    5   11    9    6    8   10    9   18    3 |    39   39   32   37   37   35   41   33   36   29    34
  25  |    4   18    5    6   17    4   22   13    8    9    3 |    16   26   21   17   29   15   36   21   19   20    17
  26E |   13   19    7   13   13    6   17   28   12   17    5 |    40   46   37   37   42   38   44   56   44   44    39
  27  |    8   12    7    6   10    5   14   19    7   14    3 |    16   23   16   19   18   17   27   31   17   28    17
  28  |    5   19    5    9   18    4   17   11    7   13    3 |    15   27   17   12   30   14   27   15   19   18    15
  29  |    7   23    7   10   15    4   20   11    5   11    4 |    18   29   14   17   22   17   29   21   18   24    16
 X30  |    7   18   10   15    9   10  ---   14  ---  ---    5 |    10   22   17   20   15   13  ---   14  ---  ---    11
  31  |    6   18    6    9   16    3   17    7    7   15    3 |    15   28   22   21   30   19   30   19   19   18    18
  32  |    7   18    5    9   11    5   14   10   10   11    3 |    16   22   20   22   25   16   22   19   20   18    18
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |    8   18    7   11   13    5   18   13    8   17      |T   23   32   25   26   30   24   32   27   26   27    24
 WRMS |    7   18    7   10   12    5   17   12    6   18      |NE  20   28   22   23   26   20   29   24   22   24    20
 MEDI |    7   18    7   10   12    5   17   12    8   15      |MD  18   28   20   21   25   17   28   22   20   22    18

Table 3.1645.3   GPS week: 1645   Day: 3   MJD: 55762.000                            

        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  ---  ---  ---  --- 6433  ---  ---  ---  ---    0 |  9999  ---  ---  ---  --- 9999  ---  ---  ---  ---  9999
   2  |    6   18   11   14   13    4   19   15    8   28    5 |    18   23   19   27   22   17   23   21   20   20    17
   3E |   11   16    9    6   16    7   18   12   12   20    4 |    92   92   87   90   79   88   82   92   93   85    88
   4  |    6   12    9    7   12    4   11   14    8   19    3 |    22   26   30   22   29   23   26   27   25   24    23
   5  |    7   17    9   10   12    5   21   14   14   19    4 |    17   24   20   20   24   21   29   23   26   25    18
   6  |    9   20    5    7   15    6   18   11   10   22    4 |    39   44   42   39   50   42   50   41   38   47    40
   7  |    6   18    5    9   21    3   26   10   10   13    4 |    15   29   21   21   30   17   31   19   20   19    17
   8  |    5   11    7    7   14    4   12    9    8   10    3 |    35   36   34   29   33   33   37   35   34   33    32
   9  |    7   13    8    4    9    3   12   13    6   11    3 |    18   21   18   20   27   18   22   27   20   21    18
  10  |    5   11    6    5   10    6   14   14   14   20    3 |    25   31   31   30   34   26   28   33   27   31    27
  11  |    7   14    5    6   19    5   17    9   11   13    3 |    33   34   33   34   37   32   36   30   33   29    32
  12  |    5   19    9   10   16    4   23   12    9   11    4 |    19   30   20   19   33   19   30   23   24   21    19
  13E |    4   18    4    7   13    5   24   13   13   10    4 |    19   34   24   22   35   23   36   22   31   23    24
  14E |    8   12    8    9   16    5   21   12    9   11    3 |    24   29   28   27   30   27   37   28   29   30    26
  15E |    7   22    9    9   16    5   20   11    8   11    4 |    20   30   22   23   23   22   31   27   25   21    21
  16  |    8   24    7   11   13    7   24   13   10   16    4 |    21   35   25   20   33   23   37   17   24   20    22
  17  |    6   20    7    6   18    7   15   10   10   11    3 |    33   41   37   38   42   34   39   37   37   35    35
  18  |    6   18    6    9   13    4   21    9    9   21    4 |    19   26   17   19   26   17   31   16   18   17    16
  19  |    6   22    8    7   16    4   20   12   10   14    4 |    21   37   21   24   28   22   32   26   22   25    21
  20  |    8   18    8   11   11    4   17    9   11   17    4 |    21   24   23   24   23   22   26   21   25   23    21
  21  |    7   13    6    7   12    5   18   12    9   21    3 |    22   27   24   23   28   21   31   25   23   21    22
  22  |    7   19    8    7   14    4   19   10    7   17    4 |    16   27   16   18   27   16   27   17   17   14    15
  23E |    5   20    5   10   10    4   21   11   11    9    3 |    13   24   16   17   24   13   28   13   14   15    13
  24  |    7   11    4    5   21    4   11    9   10   13    3 |    29   29   29   31   33   28   28   30   29   27    29
  25  |    7   16    8    7   22    4   23   15   10   11    4 |    22   30   24   25   37   22   40   23   27   25    23
  26E |   14   15   12   13   18    7   17   52   20   12    7 |    29   37   32   33   37   32   38   56   36   33    30
  27  |    9   15    9    7   12    5   12   16    7   10    3 |    20   25   20   22   28   20   26   31   24   27    20
  28  |    6   18    8    7   22    3   18   10    7   13    4 |    15   27   18   15   33   15   27   16   21   17    16
  29  |    7   23    8    8   15    6   18   13    9   11    4 |    18   31   17   18   24   17   26   20   21   22    17
 X30  |    7   21   10    8   16    7  ---   12  ---  ---    5 |    16   25   20   17   19   10  ---   17  ---  ---    15
  31  |    8   18   11   19   17    4   16    8   13   15    4 |    21   34   28   32   32   24   36   25   20   25    24
  32  |    7   16    5    9   13    3   17    9    7    8    3 |    21   23   27   28   28   22   27   23   24   24    23
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |    7   17    8    9   15    5   19   15   10   15      |T   24   31   26   26   31   24   33   27   27   26    24
 WRMS |    7   17    7    8   14    5   18   11    8   14      |NE  21   28   23   24   29   21   30   24   24   23    21
 MEDI |    7   18    8    7   15    4   18   12   10   13      |MD  21   29   24   23   30   22   31   25   24   24    22

Table 3.1645.4   GPS week: 1645   Day: 4   MJD: 55763.000                            

        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  |  157  ---    6  ---  ---   87  ---  ---  ---  ---    0 |  9999  --- 9999  ---  --- 9999  ---  ---  ---  ---  9999
   2  |    6   15    9   11   19    4   24   13    8   28    4 |    21   23   19   27   25   21   25   23   22   22    18
   3E |   15   16   13    8   27    6   17   16   18   25    5 |    77   78   71   75   79   75   73   82   79   79    75
   4  |    5   11    8    8   18    4   13    9    9   18    3 |    25   34   33   30   40   31   36   29   30   29    29
   5  |    8   15    8   10   18    3   25    9    5   22    4 |    16   22   17   23   25   17   25   22   21   25    16
   6  |   18   20    8    8   37    6   16   11   15   26    5 |    44   58   57   53   55   53   61   51   50   59    51
   7  |    6   19    6    8   29    4   21    9    9   11    4 |    12   27   17   17   36   12   28   18   19   17    14
   8  |    6   10    7    6   18    4   12    8    7   10    3 |    18   21   21   19   33   19   26   20   17   17    18
   9  |    8   13    9    6   32    4   13   21    7   13    4 |    16   22   20   19   31   17   24   29   21   21    17
  10  |    6    8    6   10   18    5   12   13    8   22    3 |    21   27   27   28   35   24   28   29   26   29    24
  11  |    6   14    6    8   19    4   18    6    8   14    3 |    26   25   28   32   29   25   25   25   25   20    24
  12  |    7   17   11   13   25    3   25   10    7   12    4 |    17   27   19   18   36   16   29   20   21   18    16
  13E |    6   19    8    9   15    3   21   10    9   14    4 |    20   29   23   23   31   20   30   19   25   20    20
  14E |    8   13    6    8   26    5   22   12    9   16    4 |    20   26   23   19   27   22   28   19   23   22    19
  15E |    7   20    9   11   26    4   25   10    7   12    4 |    19   29   23   25   37   22   26   29   22   27    21
  16  |    8   20    7   12   28    6   24   10   12   17    4 |    17   25   18   12   36   13   31   13   17   13    14
  17  |    6   19   10   11   18    4   16    9    8    9    3 |    29   38   33   34   36   34   36   35   34   35    32
  18  |    7   18    8    7   50    5   23   11    7   23    5 |    14   27   19   16   54   16   35   15   19   15    15
  19  |    7   22    9    8   28    4   16    9   12   12    4 |    20   33   17   15   37   17   29   23   17   22    17
 X20  |    8   18    7   11  ---    4   16   10    6   18    4 |    17   25   17   19  ---   16   23   16   20   16    15
 X21  |    5   15    5    8  ---    7   17    9    8   19    3 |    18   25   21   16  ---   23   30   20   22   19    18
  22  |    9   20    7    7   54    5   19   11    7   17    5 |    15   27   16   18   60   16   28   16   21   15    16
  23E |    7   19    6   13   17    4   17   10    9   13    4 |    15   24   14   20   21   12   19   15   17   16    13
  24  |    8   10    6    6   17    5   13    8    7   15    3 |    20   19   20   25   25   19   18   20   21   15    18
  25  |    8   14    7   16   26    5   27   10    9   11    4 |    17   25   18   28   40   20   34   22   24   22    18
  26E |   15   14   12   12   29    6   19   42   17   14    7 |    24   30   27   25   41   26   26   57   36   31    27
  27  |   13   12    8   10   29    7   13   24    6   16    4 |    15   20   17   16   27   16   23   28   19   22    14
 X28  |    7   14    8    8  ---    3   19    9   12   13    4 |    13   24   18   15  ---   15   27   15   20   15    14
  29  |    7   24    7    9   31    6   27   12    6   11    4 |    19   35   21   19   30   17   36   20   16   21    18
 X30  |   11   17    9   13   33   10  ---   11  ---  ---    6 |    16   22   22   22   34   14  ---   19  ---  ---    17
  31  |    7   15    7   10   34    4   19    9   10   17    4 |    19   29   23   26   45   20   29   20   28   21    21
  32  |    9   13    6   11   17    4   15    9    5   10    3 |    17   18   20   22   21   16   19   17   20   15    15
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |    9   16    8   10   28    5   20   14    9   17      |T   21   28   23   24   36   22   30   25   25   23    21
 WRMS |    8   16    8    9   25    5   19   10    7   15      |NE  18   25   20   21   35   18   28   21   21   20    18
 MEDI |    7   15    7    9   26    4   18   10    8   14      |MD  18   26   20   22   35   19   28   20   21   21    18

Table 3.1645.5   GPS week: 1645   Day: 5   MJD: 55764.000                            

        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  |  158  ---    6  ---  ---   54  ---  ---  ---  ---    0 |  9999  --- 9999  ---  --- 9999  ---  ---  ---  ---  9999
   2  |    8   15   10   17   12    5   18   16   10   29    5 |    14   19   17   30   13   17   22   22   17   18    15
   3E |   15   15   10   13   20    7   17   21   22   29    6 |    70   69   64   71   63   68   67   71   73   66    67
   4  |    7    9    6    8   13    5   14   11    9   20    3 |    20   27   29   24   33   25   28   20   22   19    22
   5  |   10   16   10   10   16    4   20   14   11   26    5 |    15   22   21   20   15   17   26   26   22   33    18
   6E |   22   19    8   13   21    6   17   11   10   31    6 |    96  103  102   97   99   94  102   96   97   96    97
   7  |    8   15    7    9   20    4   21    8    9   13    4 |    10   27   20   21   28   14   27   14   14   15    15
   8  |    6   10    6    9   12    5   10    9    8    9    3 |    26   29   32   23   27   27   34   27   26   28    27
   9  |    8   11    8    6   14    5   12   25    9   14    4 |    11   16   18   17   17   14   19   30   15   17    14
  10  |    8    9    6   12   11    5   10   16   16   25    4 |    21   24   27   33   30   23   23   28   23   29    24
  11  |    8   13    5    7   13    5   17   11   13   15    3 |    22   26   26   25   33   24   30   22   25   19    23
  12  |    9   16    9   14   21    3   16   15   11   17    4 |    15   26   17   20   27   14   26   18   16   18    14
  13E |    7   18    7    9   12    5   20   12   13   11    4 |    16   30   20   22   27   17   31   18   20   20    19
  14E |    8   13    7   11   20    4   21   12    8   15    4 |    18   23   24   22   31   18   30   18   17   21    19
  15E |    8   23   11   11   14    4   17   19   10   16    5 |    17   30   24   21   27   17   22   30   22   26    19
  16  |    7   19    7   15   24    7   20   12   10   22    5 |    21   26   22   12   38   20   27   17   21   18    19
  17  |    6   22    8    8   15    5   17   12   17   11    4 |    32   40   37   31   39   37   35   33   41   34    34
  18  |    8   19    8    9   16    4   19   15   10   25    4 |    14   28   17   13   22   14   28   16   13   21    13
  19  |    6   22    7   10   18    5   18   12    7   11    4 |    19   35   21   17   27   19   25   22   20   21    20
  20  |   10   16    9   10   13    5   14   12   11   19    4 |    16   21   15   17   18   12   21   13   15   14    13
  21  |    8   14    8    8   12    5   19   10    9   20    4 |    17   26   25   21   26   22   23   21   23   20    20
  22  |    8   17    7    9   13    5   17   11    7   19    4 |    12   25   19   19   22   15   24   15   15   20    15
  23E |    7   20    7   13   19    4   16   12   11   14    4 |    10   22   14   16   14   12   21   16   16   16    11
  24  |    6   11    5    6   14    5   12   11   11   17    3 |    15   16   14   17   22   15   14   20   18   14    14
  25  |    9   13    8   12   23    5   23   11    6   15    4 |    16   25   22   20   35   16   38   17   16   18    17
  26E |   14   13    9   10   14    5   17   41   20   15    6 |    21   27   19   26   22   22   26   49   32   26    22
  27  |    9   12    8    9   17    7   14   26    9   18    4 |    12   15   17   18   18   14   22   31   17   23    14
  28  |    6   18    5    7   19    4   18    9   11   13    4 |    11   25   17   14   31   13   27   12   14   15    13
  29  |    9   21    9    9   15    4   21   11    8   12    4 |    15   28   16   16   18   14   26   19   14   17    15
 X30  |   14   23   20  ---  ---   22  ---   11  ---  ---   10 |    20   25   30  ---  ---   22  ---   18  ---  ---    20
  31  |    6   15   10   21   19    6   14   13    9   16    4 |    17   27   21   24   36   18   29   18   19   15    17
  32  |    8   11    7    8   12    4   16   11    8   12    3 |    12   15   14   17   19   12   20   15   15   11    12
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |    9   16    8   11   16    5   17   16   11   19      |T   21   28   25   24   29   22   29   25   23   24    22
 WRMS |    8   16    8   10   16    5   16   12    9   16      |NE  16   24   21   20   25   18   25   20   19   19    17
 MEDI |    8   15    8    9   15    5   17   12   10   16      |MD  16   26   21   20   27   17   26   20   18   19    18

Table 3.1645.6   GPS week: 1645   Day: 6   MJD: 55765.000                            

        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  |   52  ---   44  ---  ---   98  ---  ---  ---  ---   48 |  9999  --- 9999  ---  --- 9999  ---  ---  ---  ---  9999
   2  |    7   18    7   17    9    3   21   14   10   31    4 |    21   25   17   32   17   19   25   25   22   22    19
   3E |   15   18    8   11   17    6   19   23   19   25    5 |    70   72   67   73   61   69   66   77   78   73    70
   4  |    6   13    5    7   12    5   12    8   11   21    3 |    25   26   34   26   35   29   28   29   30   26    28
   5  |    8   19    7    9   16    7   22   13   11   26    4 |    18   23   18   24   25   18   26   24   18   30    17
   6E |   11   22    6   12   13    7   15   13    8   29    4 |    48   55   52   48   54   50   55   45   49   56    49
   7  |    6   18    5    9   18    6   18    7    6   19    3 |    14   25   19   20   24   16   25   18   17   22    16
   8  |    6   12    5    7   14    5   10    8    7    9    2 |    23   25   25   25   24   23   25   25   22   21    22
   9  |    7   14    5    6   11    4   12   21    7   13    3 |    18   16   20   14   19   14   18   26   14   16    17
  10  |    5   10    5    6   16    5    9   15   10   27    3 |    32   34   36   35   44   33   33   40   35   34    34
  11  |    4   12    5    8   13    6   21    8    6   15    3 |    32   31   33   36   42   33   37   32   35   28    33
  12  |    7   19    7   13   16    5   20   12    7   17    4 |    15   27   16   17   25   14   28   19   18   19    15
  13E |    4   19    6    8   16    5   21    9    9   17    3 |    23   32   25   22   33   23   38   22   25   24    24
  14E |    5   13    6    8   18    5   21   17    9   14    4 |    13   21   19   17   21   15   25   16   17   20    15
  15E |    7   22    6   11   29    5   23   13    6   10    4 |    29   32   27   27   36   27   30   30   28   30    27
  16  |    6   23    5   13   13    9   23   10    9   21    4 |    19   33   24   16   30   20   39   15   22   17    21
  17  |    6   20    6    7   18    3   20    6    5   11    3 |    26   32   28   28   38   30   33   28   28   26    27
  18  |    6   20    8   12   13    4   20   14    9   31    4 |    16   27   19   18   25   15   31   17   17   24    15
  19  |    6   23    6   10   17    5   18    9    6   12    3 |    20   39   23   21   31   20   33   25   18   23    21
  20  |    8   17    7   11   13    6   19    8    7   21    3 |    21   22   18   22   23   20   27   19   18   20    19
  21  |    6   17    6    7   12    3   21   10   10   21    3 |    20   28   22   22   28   20   29   21   22   20    20
  22  |    5   18    6   10   12    5   17   11    7   23    3 |    15   25   18   20   29   17   27   15   20   20    17
  23E |    5   20    5   10   20    5   18   11    9   18    4 |    19   26   19   17   26   19   30   18   20   19    19
  24  |    5   12    4    8   12    8   13    8    5   15    2 |    18   17   18   22   24   17   21   22   20   15    18
  25  |    8   14    6   11   20    3   24   11    8   15    4 |    14   25   19   24   31   18   38   18   20   21    18
  26E |   12   16    9    9   17    5   17   39   15   15    6 |    29   30   27   29   34   29   32   48   35   28    28
  27  |    8   12    6    7   11    5   11   23    5   12    3 |    17   13   16   15   18   13   19   27   14   16    16
  28  |    6   21    6   10   14    6   26   10    5   18    4 |    15   27   15   14   27   15   30   16   16   21    14
  29  |    7   24    5   10   19    4   18   13    5   12    4 |    23   37   20   19   26   19   31   22   18   23    21
 X30  |   16   23   17  ---  ---   33  ---    9  ---  ---    9 |    17   30   31  ---  ---   29  ---   21  ---  ---    22
  31  |    6   17    5   11   16    5   17   17    6   16    4 |    20   29   24   21   35   22   32   24   24   17    22
  32  |    8   17    3    9   15    4   14   10    5   13    3 |    19   20   20   26   30   18   27   20   20   16    20
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |    7   18    6   10   16    5   18   14    9   19      |T   22   29   24   25   30   23   31   25   24   24    23
 WRMS |    7   18    6    9   15    5   17   10    6   16      |NE  19   26   22   22   28   20   28   22   21   21    20
 MEDI |    6   18    6    9   15    5   18   11    7   17      |MD  20   27   20   22   28   20   30   22   20   21    20



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 4.1645   GPS week: 1645   MJD: 55759.0-55765.0

CENT| CLK EPO  |        BRUS       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3017 |U    8     8    19 |U    6     9    25 |U    8     8    18 |
emr | emr 2967 |U   10     9    27 |U    8    15    28 |    10    10    20 |
esa | esa 3017 |     8     8    21 |U    5     7    22 |     8     7    16 |
gfz | gfz 2938 |U    9     8    24 |U    6    12    29 |U    9     7    19 |
grg | grg 2907 |    11     9    24 |U    6     8    26 |    12    11    22 |
igr | igr 2967 |     8     8    20 |     5     7    21 |     8     7    18 |
igs | igs 2995 |     8     8    21 |     5     8    23 |     7     7    17 |
jpl | jpl 2870 |    11    10    32 |U    9    21    36 |U    9     8    22 |
mit | mit 2976 |U    8     8    21 |U    8    21    35 |U    8    10    19 |



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 5.1645.0   GPS week: 1645   Day: 0   MJD: 55759.0

CENT| CLK EPO  |        BRUS       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 2976 |     7     9    21 |     4     6    21 |     8    11    16 |
emr | emr 2972 |    11     8    29 |    10    19    40 |     9     6    26 |
esa | esa 2976 |     8     8    22 |     3     5    20 |     8     7    17 |
gfz | gfz 2966 |     8     9    21 |    10    18    43 |    14    10    20 |
grg | grg 2976 |     9     9    22 |     5     6    28 |     8     9    16 |
igr | igr 2976 |     7    10    23 |     4     6    20 |     7     8    17 |
igs | igs 2952 |     8     9    22 |     3     5    18 |     8     9    17 |
jpl | jpl 2867 |    10     9    26 |     9    26    40 |     8     7    22 |
mit | mit 2976 |    10     9    28 |    12    36    49 |     8    11    21 |

Table 5.1645.1   GPS week: 1645   Day: 1   MJD: 55760.0

CENT| CLK EPO  |        BRUS       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 2976 |     7     6    19 |     4     5    20 |     7     5    17 |
emr | emr 2966 |    11     9    28 |     8    18    38 |    11     8    24 |
esa | esa 2976 |     7     6    19 |     4     5    20 |     7     6    17 |
gfz | gfz 2964 |     8     7    19 |     5    16    30 |     6     5    16 |
grg | grg 2976 |     9     6    21 |     5     5    25 |     8     6    17 |
igr | igr 2976 |     8     6    18 |     5     6    21 |     7     6    17 |
igs | igs 2970 |     8     6    21 |     4     4    18 |     7     6    18 |
jpl | jpl 2875 |    16    10    46 |    12    30    57 |     8     6    22 |
mit | mit 2976 |     8     6    19 |     5    16    39 |     7     8    18 |

Table 5.1645.2   GPS week: 1645   Day: 2   MJD: 55761.0

CENT| CLK EPO  |        BRUS       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 2976 |     6     5    18 |    12    17    42 |     8     6    15 |
emr | emr 2972 |     9     8    27 |     9    17    22 |    11    11    19 |
esa | esa 2976 |     6     6    20 |    10    17    27 |     8     7    15 |
gfz | gfz 2967 |     6     7    21 |    15    21    52 |     9     7    15 |
grg | grg 2976 |     7     6    20 |    10    14    27 |    11     8    17 |
igr | igr 2976 |     7     6    20 |    10    14    26 |     8     7    15 |
igs | igs 2973 |     7     5    19 |    15    21    49 |     9     7    15 |
jpl | jpl 2870 |     8     8    26 |    15    30    48 |     9    10    20 |
mit | mit 2976 |     6     6    20 |     9    21    29 |    10     8    16 |

Table 5.1645.3   GPS week: 1645   Day: 3   MJD: 55762.0

CENT| CLK EPO  |        BRUS       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 2992 |     7     6    18 |     5    11    24 |     6     4    20 |
emr | emr 2968 |     9     9    25 |     8    10    24 |     6     5    19 |
esa | esa 2976 |     7     8    21 |     5     8    24 |     6     5    18 |
gfz | gfz 2967 |     7     8    18 |     4     8    24 |     5     5    18 |
grg | grg 2976 |     7     7    19 |     5     8    27 |     7     9    23 |
igr | igr 2971 |     7     8    20 |     5     9    24 |     5     4    17 |
igs | igs 2967 |     7     7    19 |     5     8    23 |     6     4    17 |
jpl | jpl 2871 |    11    10    36 |     6    15    28 |     4     4    18 |
mit | mit 2976 |     7     7    18 |     8    17    40 |     7     7    19 |

Table 5.1645.4   GPS week: 1645   Day: 4   MJD: 55763.0

CENT| CLK EPO  |        BRUS       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3069 |     7     8    19 |     4     6    24 |     9    15    27 |
emr | emr 2968 |     9    10    32 |     7    14    25 |    16    19    15 |
esa | esa 3072 |    12     9    28 |     3     7    24 |     8    11    18 |
gfz | gfz 2967 |    12    10    35 |     4     8    19 |    11    10    29 |
grg | grg 2688 |    18    12    27 |     6     7    33 |    28    27    39 |
igr | igr 2976 |     8     9    26 |     4     7    22 |    13    12    30 |
igs | igs 3061 |     9     9    28 |     3     6    21 |     8    13    20 |
jpl | jpl 2867 |     9    11    33 |     6    17    29 |    20    14    26 |
mit | mit 2976 |     9    11    25 |     6    20    36 |     8    19    23 |

Table 5.1645.5   GPS week: 1645   Day: 5   MJD: 55764.0

CENT| CLK EPO  |        BRUS       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3069 |    11     7    18 |     6     8    21 |     7     9    15 |
emr | emr 2968 |    11     8    30 |     8    16    28 |    10     8    21 |
esa | esa 3072 |    10     6    19 |     4     6    18 |     8     6    14 |
gfz | gfz 2872 |    14     8    33 |     4     6    16 |     7     7    14 |
grg | grg 2880 |    18    11    40 |     5     8    22 |    11     9    20 |
igr | igr 2975 |    11     6    18 |     5     6    17 |     7     6    15 |
igs | igs 3035 |    11     6    20 |     4     6    15 |     7     6    15 |
jpl | jpl 2871 |    13    11    43 |     6    11    23 |     8     7    19 |
mit | mit 2976 |    11     6    19 |     6    19    30 |     8     7    16 |

Table 5.1645.6   GPS week: 1645   Day: 6   MJD: 55765.0

CENT| CLK EPO  |        BRUS       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3064 |     9    13    19 |     6     8    21 |     8     8    17 |
emr | emr 2960 |    10    10    19 |     6     9    24 |     8     9    18 |
esa | esa 3072 |     8    10    17 |     3     4    19 |     9     8    14 |
gfz | gfz 2868 |    10     8    19 |     4     6    22 |  ----  ----  ---- |
grg | grg 2880 |    11     9    18 |     4     6    22 |    10    10    22 |
igr | igr 2923 |    10     9    17 |     4     5    20 |     8     9    17 |
igs | igs 3013 |     9    10    15 |     4     5    20 |  ----  ----  ---- |
jpl | jpl 2869 |    11    11    16 |     6    16    28 |     8    10    24 |
mit | mit 2976 |     8    10    16 |     6    16    25 |    10     8    18 |


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 6.1645   GPS week: 1645   MJD: 55759.500-55765.500

                                                         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 |      -3     -19      24     -56     -1 |       4     16
            |      22      17     118      78      7 |       2
emr   uuuuu |      50      -7      72     153      7 |      21     29
            |      22      22      73     130      8 |       3
esa   uuuuu |       4     -31       1     -60      2 |      11     19
            |      18      17      16      50      4 |       2
gfz   uuuuu |     -74     -10     -28     -58     -8 |       4     17
            |      26      19      37      98      4 |       2
grg   xuuux |     106     -12      43    -174     90 |     -87    130
            |     110      35     153      97     23 |      15
igr   xxxxx |     -29     -14      31     -24     -3 |       5     17
            |      18      20      52      70      5 |       2
irf   xxxxx |      -4      -4     -50     -50     -1 |       3     16
            |      12       9      32      34      2 |       2
jpl   uuuuu |       4     -13     -25     104      5 |      21     28
            |      68      39     129      26     11 |       5
mit   uuuuu |     -35       3    -160    -108      2 |      18     24
            |      24      15      66      62      2 |       2
ngs   uuuuu |       5      52      30     134      2 |      10     15
            |      33      37      85      76      6 |       2
sio   uuuuu |     124      28     123      59     -6 |      32     35
            |      16      17     130      85      3 |       2


Table 7.1645.0   GPS week: 1645   Day: 0   MJD: 55759.500

                                                         AC LOD  AC LOD
CENT  FLAG  |   Xpole   Ypole     Xrt     Yrt    LOD |    BIAS  BIAS RMS
            |   [uas]   [uas]   [uas/d] [uas/d]  [us]|    [us]    [us]
------------+----------------------------------------+------------------
cod   xxxxx |      23     -32     132    -148    -12 |       5     15
emr   uuuuu |      52      32     -63     265     12 |      19     25
esa   uuuuu |       7     -64     -18    -101      1 |      10     16
gfz   uuuuu |     -92     -29      15     -39     -6 |       4     15
grg   xuuux |      37     -63     211    -126     81 |    -107    142
igr   xxxxx |     -15     -20      87     -37      5 |       4     14
irf   xxxxx |       4     -13     -21     -13      1 |       2     13
jpl   uuuuu |       7      37    -139     152     11 |      15     23
mit   uuuuu |     -18     -15     -54     -52      5 |      16     21
ngs   uuuuu |      -5     114      21      80     -4 |       8     13
sio   uuuuu |     138      28      49      56     -2 |      32     35

Table 7.1645.1   GPS week: 1645   Day: 1   MJD: 55760.500

                                                         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      12      78     -74     -5 |       6     16
emr   uuuuu |      63      14      84     321      8 |      22     29
esa   uuuuu |      16     -15      16     -79      4 |      11     18
gfz   uuuuu |     -83     -27      -9    -174     -1 |       6     17
grg   xuuux |      31      23      81    -254     90 |    -103    141
igr   xxxxx |      -1      -1      95    -114     -6 |       7     17
irf   xxxxx |       7       2     -23     -41      1 |       4     15
jpl   uuuuu |     -62     -14    -122      94    -11 |      19     28
mit   uuuuu |     -11       4    -102    -113      5 |      18     24
ngs   uuuuu |      -6      10      24     217     -2 |       9     14
sio   uuuuu |     136      41      46      70     -4 |      35     38

Table 7.1645.2   GPS week: 1645   Day: 2   MJD: 55761.500

                                                         AC LOD  AC LOD
CENT  FLAG  |   Xpole   Ypole     Xrt     Yrt    LOD |    BIAS  BIAS RMS
            |   [uas]   [uas]   [uas/d] [uas/d]  [us]|    [us]    [us]
------------+----------------------------------------+------------------
cod   xxxxx |      15     -41     -76     -47     -6 |       7     16
emr   uuuuu |      69      -9      91     205     -5 |      24     31
esa   uuuuu |      29     -26      -2     -50      6 |      13     20
gfz   uuuuu |     -97      18     -96    -162     -7 |       8     18
grg   xuuux |      69     -39      74    -138    120 |     -96    140
igr   xxxxx |     -39     -18      57     -64      0 |       8     18
irf   xxxxx |       5      -4     -85     -59     -2 |       6     17
jpl   uuuuu |       2     -12      27      83     -5 |      21     29
mit   uuuuu |     -18      -6    -218    -119      2 |      20     26
ngs   uuuuu |     -37      45     101     167      5 |      11     16
sio   uuuuu |     131      19      40     110     -8 |      36     39

Table 7.1645.3   GPS week: 1645   Day: 3   MJD: 55762.500

                                                         AC LOD  AC LOD
CENT  FLAG  |   Xpole   Ypole     Xrt     Yrt    LOD |    BIAS  BIAS RMS
            |   [uas]   [uas]   [uas/d] [uas/d]  [us]|    [us]    [us]
------------+----------------------------------------+------------------
cod   xxxxx |      -7     -19     -10     -63     -3 |       3     15
emr   uuuuu |      69     -14      16     188      0 |      19     28
esa   uuuuu |       9     -29     -17     -54     -4 |      10     18
gfz   uuuuu |     -99       1     -37    -104    -12 |       4     17
grg   xuuux |     128     -32     248    -179    100 |     -74    121
igr   xxxxx |     -37     -14     -19     -78    -11 |       4     17
irf   xxxxx |      -6       0     -94     -64     -3 |       2     16
jpl   uuuuu |      50     -57    -141      97     12 |      18     27
mit   uuuuu |     -34       7    -247    -118      2 |      17     24
ngs   uuuuu |      -5      64     179     192      8 |       9     15
sio   uuuuu |     136      33     -22      81     -5 |      31     34

Table 7.1645.4   GPS week: 1645   Day: 4   MJD: 55763.500

                                                         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 |     -44     -22    -139      79      5 |       0     17
emr   uuuuu |      42     -30     104       9      6 |      17     27
esa   uuuuu |      -4     -38      13     -96      3 |       8     19
gfz   uuuuu |     -63       8      -1      12     -8 |       1     20
grg   xuuux |     333      -7    -141    -297     47 |     -77    121
igr   xxxxx |     -30       8      32      69     -5 |       2     19
irf   xxxxx |      -3      -1     -56     -11     -3 |       1     18
jpl   uuuuu |    -103      25     197      83      8 |      19     27
mit   uuuuu |     -44      19    -180     -20      0 |      16     24
ngs   uuuuu |      53      16     -69      78      0 |       8     15
sio   uuuuu |     120      33     199     145     -9 |      29     34

Table 7.1645.5   GPS week: 1645   Day: 5   MJD: 55764.500

                                                         AC LOD  AC LOD
CENT  FLAG  |   Xpole   Ypole     Xrt     Yrt    LOD |    BIAS  BIAS RMS
            |   [uas]   [uas]   [uas/d] [uas/d]  [us]|    [us]    [us]
------------+----------------------------------------+------------------
cod   xxxxx |     -10      -9     -11    -136      5 |       4     16
emr   uuuuu |       6     -15     156     -35     21 |      21     29
esa   uuuuu |     -27     -12      -7     -86      4 |      12     19
gfz   uuuuu |     -48     -11     -48     103    -12 |       4     18
grg   xuuux |     131       0     -62      -4     91 |     -77    121
igr   xxxxx |     -57      -1     -43      64      2 |       6     17
irf   xxxxx |     -28       7     -53    -111     -2 |       4     16
jpl   uuuuu |      97     -69      75     127     21 |      25     29
mit   uuuuu |     -80      24    -157    -219      2 |      20     25
ngs   uuuuu |      49      35     -39     190     -6 |      12     16
sio   uuuuu |      93      49     206    -123     -5 |      32     35

Table 7.1645.6   GPS week: 1645   Day: 6   MJD: 55765.500

                                                         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 |       0     -25     196      -4      5 |       4     16
emr   uuuuu |      50     -24     116     120      4 |      25     33
esa   uuuuu |       0     -31      20      45      0 |      13     19
gfz   uuuuu |     -33     -29     -17     -43     -9 |       2     17
grg   xuuux |      11      36    -109    -222    103 |     -74    121
igr   xxxxx |     -20     -53       7      -9     -3 |       6     17
irf   xxxxx |      -9     -18     -14     -50     -2 |       4     15
jpl   uuuuu |      38      -2     -68      92      0 |      28     33
mit   uuuuu |     -41     -14    -164    -111     -2 |      21     26
ngs   uuuuu |     -16      78      -9      17     10 |      11     16
sio   uuuuu |     115      -4     347      72     -8 |      30     34



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