[IGSREPORT-20113] Wk 1650 IGS Final Orbits

Jim Ray igs.acc at noaa.gov
Thu Sep 8 06:00:38 PDT 2011


Author:  AC Coordinator / NOAA NGS

sum-file Version 2.0
Final IGS Orbit Combination - Week 1650   (Aug 21, 2011 - Aug 27, 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:

igs1650[0-6].sp3  IGS GPS ephemeris files in SP3 format.
igs1650[0-6].clk  IGS GPS satellite and station clocks in clock RINEX format.
igs1650[0-6].cls  IGS GPS clock combination summary report.
igs16507.erp      Earth Rotation Parameters (ERP) and their rates as well as
                  Universal Time (UT1-UTC) and Length Of Day (LOD) associated 
                  with IGS ephemerides.
igs16507.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  |  ALL   | 30
                0  |  COD   | 10
                0  |  EMR   | 10 2 4 10 11 20 24 31 32
                0  |  GFZ   | 6 10 DGAR MDVJ
                0  |  GRG   | USN3
                0  |  JPL   | 8
                0  |  MIT   | 27 27 DAV1
                1  |  ALL   | 30
                1  |  COD   | KOSG ZECK
                1  |  ESA   | BAN2 NRMD UNSA
                1  |  GFZ   | 7 27 CHUR MDVJ
                1  |  GRG   | SANT USN3
                1  |  MIT   | 1 27 1 27 IENG MAW1
                2  |  ALL   | 30
                2  |  COD   | 27 ZECK WILL ZECK
                2  |  ESA   | UNSA
                2  |  GFZ   | BRMU KIRU MDVJ NYAL OPMT WSRT
                2  |  JPL   | 4
                2  |  MIT   | 26 27 1 26 27 MAW1
                3  |  ALL   | 30
                3  |  COD   | NICO
                3  |  EMR   | KERG
                3  |  ESA   | IRKJ
                3  |  GFZ   | SALU
                3  |  GRG   | IRKJ USN3
                3  |  JPL   | 24 IRKJ KARR
                3  |  MIT   | 1 21 27 1 21 26 27 NICO
                4  |  ALL   | 30
                4  |  COD   | NICO KOSG NICO WTZR
                4  |  ESA   | WHIT GUUG IRKJ WHIT
                4  |  GFZ   | 30 BRUS SFER VILL YAKT
                4  |  GRG   | IRKJ USN3
                4  |  MIT   | 1 7 27 1 7 27 30 DAV1 KOSG DAV1 KOSG
                5  |  ALL   | 30
                5  |  COD   | NICO NICO WHIT
                5  |  ESA   | 17 WHIT BRMU WHIT
                5  |  GFZ   | BAN2 CHUR HARB KOSG MDVJ UNSA
                5  |  GRG   | USN3
                5  |  MIT   | 1 27 1 27 DAV1 DAV1
                6  |  COD   | WHIT WHIT
                6  |  GFZ   | 30 KOSG
                6  |  GRG   | IRKJ NKLG USN3
                6  |  JPL   | COCO
                6  |  MIT   | 1 27 30 1 24 27 30 KOSG MAW1 KOSG MAW1

 5. The following table lists all maneuvered satellites for this week.
    The solutions from COD and ESA, which modeled the maneuver, are used
    that day for combination. An associated accuracy code of 0 (unknown) 
    is given if only one AC is left (no redundancy). For the long arc  
    evaluation the arc is split into two parts at the given maneuver epoch.
    
               PRN |    Date    | Ref. NANU
               ----+------------+----------
               G06 | 2011_08_23 | 2011065 
               G08 | 2011_08_26 | 2011068 

 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  |     .6     .2     .5     -18    -19     25    -.02
       EMR  |    -.2    3.3    2.0       4    -14      4     .13
       ESA  |    1.1     .9   15.7      27    -12     69     .02
       GFZ  |    -.5    1.1     .9     -26     -5      4    -.24
       GRG  |   -1.1    1.4   11.3       2    -10      1    -.21
       JPL  |    -.5    2.6   -1.1      31     42     65    -.23
       MIT  |    3.6   -2.1   15.2     -14      8    -18    -.09
       NGS  |    3.2    1.6   14.5     -32      9      2     .0 
       SIO  |   -2.0    -.9     .5     -31     -3      3    -.30


 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 1.1650.a). It also displays the computed satellite
position sigmas for the combined orbits (table 1.1650.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 2.1650.[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 3.1650.[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 5.1650.0-6).

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 1650 summary.                       (Aug 21, 2011 - Aug 27, 2011)

Table 1.1650.a   GPS week: 1650   MJD: 55794.000-55800.000

         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  250|    0     0     1    25    16    12  -.26    8    7 |    -674     -54     18     81
        |    0     0     1     7     9     8   .02           |     746    1395
emr   88|    0     2    -1    -7    10    -6   .44   19   19 |    2458    -155     24    118
        |    1     1     2    24    12    11   .02           |     898    1328
esa  131|    0     0     2   -58    69    -6   .26    8    8 |   -1304     498     19    182
        |    1     0     2     9     7     9   .05           |    1097     752
gfz  193|    0     0    -3    40    10     3  -.21   11   11 |     112    -276     22    105
        |    0     1     0    36    46     6   .03           |     361     610
grg  130|    1     0     5   -21    11    10   .57   15   14 |      19    -134     47    226
        |    0     0     2    12    29     9   .03           |     431     472
igr  n/a|    0     0     1   -13     0   -23  -.06    5    5 |    3144    -202     19     70
        |    0     0     1    21    14    20   .03           |     687    1201
jpl  140|   -1     0    -9   -78  -101    56   .58   14   14 |    1967     -44     17    100
        |    0     1     1    16    10    22   .01           |    1131    1223
mit  264|    1    -1     0    -4   -29   -13  -.37    9    8 |    -172    -211     22    185
        |    1     0     0    21    20     7   .01           |     578     769
ngs  222|    0     0     2    59   -37   -25  -.22    9    7 |    -693      66   1870   3506
        |    0     0     2    24    26     9   .03           |     661    1209
sio  249|   -2     0    -1    47    29   -14  -.20   23   22 |     ---     ---    ---    ---
        |    1     0     2    27    27     9   .02           |     ---     ---


Table 1.1650.b   GPS week : 1650   MJD: 55794.000-55800.000   

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



Table 2: Daily transformation of each centre to the combined IGS orbit and
         clocks for each day of the week. The transformation displayed is the
         sum of a priori and estimated transformations.
         WRMS - RMS weighted by the centres SP3 header accuracy codes.
         STA  - Number of stations in the daily solutions.
   
Table 2.1650.0   GPS week: 1650   Day: 0   MJD: 55794.000                            

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  250|    0     0     2    18     6    13  -.25    7    7 |    -849   -1028     17     72
        |                     28    21                       |
emr   88|   -2     3    -2    -1    18    13   .41   19   19 |    2331     917     62    153
        |                    -64     0                       |
esa  131|    0     0     1   -56    67    -2   .34    7    7 |   -1285     704     22    181
        |                     20    -8                       |
gfz  193|    0     1    -4    85    17     0  -.21   11   10 |    -178     377     22    104
        |                    -39    51                       |
grg  130|    1     0     5    -9   -21    10   .57   15   14 |    -530     811     38    204
        |                     -4    66                       |
igr  n/a|    1     0     2   -46    -9   -56  -.07    6    6 |    3112     677     23     76
        |                    -14     1                       |
jpl  140|   -1     1    -8   -96  -114    37   .60   14   13 |     859     971     19    110
        |                     27    46                       |
mit  264|    2    -1     0     1   -16    -4  -.38    9    8 |    -637     233     22    166
        |                      5    -1                       |
ngs  222|    0     0     2    38   -48   -40  -.27   10    7 |    -721    -681   1773   3434
        |                     16    55                       |
sio  249|   -1     0    -3    57    46    -8  -.19   24   21 |     ---     ---    ---    ---
        |                    -64   -51                       |

Table 2.1650.1   GPS week: 1650   Day: 1   MJD: 55795.000                            

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  250|    0     0     0    24    30     1  -.26    9    9 |    -440      68     16     69
        |                     38   -12                       |
emr   88|   -1     2    -5    15    25   -13   .42   18   18 |    2928    1289     21     97
        |                    -50    32                       |
esa  131|   -3     0     5   -56    80    -3   .19    9    9 |    -382     299     19    183
        |                     39   -37                       |
gfz  193|    0    -1    -3    14   -77     6  -.22   12   10 |     837   -1020     24    100
        |                      9    38                       |
grg  130|    2     0     3     0    23    25   .60   14   13 |     392     -51     38    222
        |                      4    -7                       |
igr  n/a|    0     0     3   -11    29     6  -.09    4    4 |    3624     967     20     67
        |                    -27    12                       |
jpl  140|   -1     0    -9   -86   -86    43   .57   13   13 |    3004    1283     17     91
        |                     57    70                       |
mit  264|    3    -1     0     4   -59    -2  -.38    9    9 |     -59     136     20    197
        |                      0    10                       |
ngs  222|    0     0     6    64    10   -15  -.19    9    8 |    -467     202   1743   3647
        |                      9   -31                       |
sio  249|   -1     2    -4    57     1   -11  -.22   22   20 |     ---     ---    ---    ---
        |                    -69   -35                       |

Table 2.1650.2   GPS week: 1650   Day: 2   MJD: 55796.000                            

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  250|    0     0     0    24    17     8  -.24    7    7 |      99   -1017     14     75
        |                    -24    37                       |
emr   88|   -1     1     0   -11    11     0   .44   18   18 |    3985   -2219     15    104
        |                    -42    27                       |
esa  131|   -1    -2     5   -56    74     2   .25   11   10 |    -701     172     16    165
        |                     51     3                       |
gfz  193|    0     1    -4    15    14     3  -.18   11   12 |      27      74     24    121
        |                    -15    21                       |
grg  130|    2     1     4   -31   -13    -1   .62   14   14 |     605    -565     59    241
        |                     43    37                       |
igr  n/a|    0     0     1    -4     3   -12  -.07    5    5 |    4416   -2429     19     70
        |                      3    15                       |
jpl  140|   -1     0    -9   -75  -111    42   .59   14   13 |    4050   -2208     16     95
        |                     36   107                       |
mit  264|    1    -1     1   -20    -5   -15  -.37    8    7 |     800   -1494     19    178
        |                      0     1                       |
ngs  222|    0     0     1    95   -16   -21  -.18    9    8 |    -298    -126   1813   3337
        |                     -6    17                       |
sio  249|   -1     0    -2    40    57   -24  -.21   22   22 |     ---     ---    ---    ---
        |                    -79   -49                       |

Table 2.1650.3   GPS week: 1650   Day: 3   MJD: 55797.000                            

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  250|    0     0     0    21    19    12  -.24    8    8 |    -511    -130     17     73
        |                     54    -9                       |
emr   88|   -1     3     0   -33    22     0   .45   19   19 |    2807    -619     22    116
        |                    -19    29                       |
esa  131|    0     0     2   -78    65   -17   .25    8    7 |    -625    -126     18    182
        |                     50     6                       |
gfz  193|    0     1    -2    61    33     6  -.26   10    9 |     -44     255     20    102
        |                    -18    37                       |
grg  130|    2     1     3   -31    47     5   .56   14   12 |     263    -523     51    221
        |                     43    -3                       |
igr  n/a|    1     0     2    -7   -16   -34  -.07    4    4 |    3038    -366     17     70
        |                    -12    30                       |
jpl  140|   -2    -2    -9   -91   -95    71   .57   14   13 |    1459    -383     18    103
        |                     54    53                       |
mit  264|    0    -1     1    35   -43   -16  -.37    9    9 |     -10    -237     24    183
        |                     -4     1                       |
ngs  222|    0     0     1    40   -61   -21  -.20    9    7 |    -398    -395   1659   3664
        |                    -18    38                       |
sio  249|   -2     0     0   101    31   -16  -.21   23   23 |     ---     ---    ---    ---
        |                    -81   -41                       |

Table 2.1650.4   GPS week: 1650   Day: 4   MJD: 55798.000                            

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  250|    0     0     1    28    12    21  -.23    7    7 |   -2214    2946     21     86
        |                     -5    57                       |
emr   88|    1     0     1   -39   -10   -14   .45   19   19 |    2299   -1498     17    113
        |                    -15    32                       |
esa  131|    0    -1     2   -53    56   -18   .29    7    7 |    -827    -479     19    170
        |                     43   -19                       |
gfz  193|    1     0    -3    36    76     3  -.20   11   11 |    -134   -1111     21    102
        |                    -41    44                       |
grg  130|    0     1     5   -22   -12    20   .55   17   15 |    -453     -19     47    232
        |                     10    52                       |
igr  n/a|    0     0     0   -16   -10   -20  -.03    5    5 |    2877   -1078     18     79
        |                      4    23                       |
jpl  140|   -1     1   -11   -52  -107    64   .57   14   13 |    1609    -938     20    123
        |                     27    31                       |
mit  264|    0     0     1   -20    -8   -22  -.34    9    8 |    -929     818     23    194
        |                     13    -6                       |
ngs  222|    0     0     1    56   -61   -21  -.21    8    6 |   -2130    2686   2487   3854
        |                    -40    40                       |
sio  249|   -3     0     0    27    63   -12  -.17   22   25 |     ---     ---    ---    ---
        |                    -63   -28                       |

Table 2.1650.5   GPS week: 1650   Day: 5   MJD: 55799.000                            

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  250|    0     0     1    20    24    23  -.28    9    8 |    -639    -900     20     84
        |                     27    -9                       |
emr   88|    0     3    -2    -7     2   -13   .44   18   18 |    1341     242     16    115
        |                    -47    54                       |
esa  131|    0     0     0   -60    67   -11   .24    8    8 |   -1743    1368     20    206
        |                     22    -5                       |
gfz  193|    0     0    -4    79     2    -7  -.17   11   11 |     -62      26     23    115
        |                    -81    38                       |
grg  130|    2     0    10   -31    47     9   .56   16   16 |    -198    -171     52    245
        |                     19   -25                       |
igr  n/a|    0     0     0   -27     1   -31  -.02    4    4 |    2440     288     18     62
        |                      0    35                       |
jpl  140|    0     1   -11   -88   -93    97   .58   15   15 |    1351     329     15     91
        |                     57    92                       |
mit  264|   -1    -1     1    -3   -41   -15  -.36   10    9 |    -526     -21     19    156
        |                     12    -5                       |
ngs  222|    0     0     2    32   -50   -36  -.23    9    8 |    -657    -909   1728   3406
        |                    -14    53                       |
sio  249|   -5     0     0    28     3   -29  -.21   24   24 |     ---     ---    ---    ---
        |                    -43   -45                       |

Table 2.1650.6   GPS week: 1650   Day: 6   MJD: 55800.000                            

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  250|    0     0     1    40     6     2  -.30    7    7 |    -167    -319     22    110
        |                    -10    26                       |
emr   88|    0     0    -2    27     5   -18   .43   20   20 |    1519     803     18    130
        |                    -54    32                       |
esa  131|    0     0     2   -50    71     5   .28    7    7 |   -3570    1552     22    190
        |                     23   -14                       |
gfz  193|    0     0    -3    -8     8    11  -.23   12   14 |     338    -535     24     95
        |                    -47    34                       |
grg  130|    0     0     7   -26     9     6   .54   15   15 |      60    -426     49    219
        |                     41    14                       |
igr  n/a|    1     0     0    21    -4   -11  -.08    4    4 |    2502     526     20     70
        |                    -14    20                       |
jpl  140|    0     1   -10   -59   -97    39   .56   15   14 |    1443     634     18     93
        |                     19    61                       |
mit  264|    0    -2     0   -27   -31   -18  -.38   11   10 |     157    -916     27    225
        |                     10    -5                       |
ngs  222|    0     0     0    86   -33   -23  -.26   10    8 |    -182    -312   1890   3205
        |                    -43    48                       |
sio  249|   -2     0     0    21     1    -2  -.22   25   23 |     ---     ---    ---    ---
        |                    -50   -34                       |

       
       
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 3.1650.0   GPS week: 1650   Day: 0   MJD: 55794.000                            

        Weighted Average                                            Orbit Dynamics (7 days)
 PRN  |  cod  emr  esa  gfz  grg  igr  jpl  mit  ngs  sio  IGS |   cod  emr  esa  gfz  grg  igr  jpl  mit  ngs  sio   IGS
------+--------------------------------------------------------+---------------------------------------------------------
  X1  |   22  ---   18  ---  ---   30  ---   16  ---  ---   14 |    55  ---   72  ---  ---   75  ---   56  ---  ---    60
   2  |    6   21    9    8   16    4   19   10    5   17    4 |    27   39   24   28   29   26   38   24   24   35    26
   3  |    7   17    7    9   11    7   15    8   11   20    3 |    12   21   18   20   16   17   24   17   13   16    14
   4  |    6   12    6    9   12    5   11    6    8   21    3 |    17   16   15   19   12   16   16   18   18   19    14
   5  |    5   16    8    8   11    5   15    8   11   31    3 |    22   24   32   28   34   26   28   28   27   27    26
   6E |   10   25    9   11   12    9   19   15   10   20    4 |    21   30   19   20   21   20   26   17   18   15    20
   7  |    9   25    8    9   18    6   17   10   10   17    4 |    26   37   29   26   33   28   33   26   28   26    26
   8  |    8   16    7    9   15    4   10    8    9   14    3 |    17   17   12   12   13   16   15   13   14   14    13
   9  |    8   15    7    6   14    6   12    9   10   22    3 |    65   66   63   63   59   66   65   68   68   77    65
  10  |    5   14    5    7   18    5   10    5    7   15    3 |    29   30   31   32   39   31   29   34   30   25    30
  11  |    7   15    5    6   20    5   10    8   12   20    3 |    18   30   24   22   36   20   29   21   22   25    21
  12  |    6   22    8   12   16    8   16    5    8   33    4 |    13   27   20   26   25   19   26   17   16   21    16
  13  |    7   20    5    7   23    5   14   13    6   16    4 |    16   26   20   17   37   20   25   18   18   16    17
  14  |    6   17    8   10   17    4   14    8   11   16    3 |    21   26   23   24   26   22   21   24   22   19    20
  15  |    6   24    9   13   19    5   19    7    7   22    4 |    17   25   25   22   29   20   22   18   18   15    18
  16  |    9   23   10   12   13    7   18   10   16   28    4 |    13   31   22   22   23   16   24   18   17   14    15
  17E |    7   22    8    8   16    6   16   10    7   29    4 |    26   30   24   23   25   25   27   26   24   29    23
  18  |    6   18    8   12   10    7   14   13    9   26    4 |    21   30   30   31   31   27   28   27   25   25    25
  19E |    6   25    7   11   14    5   10   12   10   28    4 |     9   27   11   13   16    8   14   14   12   26     8
  20  |    7   14    5    9   11    5   12    5   12   39    4 |    24   28   30   30   30   27   27   26   28   45    26
  21  |    7   26    8    8   16    6   15   11   11   19    4 |    28   43   30   30   37   27   38   27   26   30    28
  22  |    6   13    6    7    7    5   11    8   10   31    3 |    27   29   32   32   30   31   27   36   32   42    29
  23  |    6   26    6    7   16    7   17   12    9   18    4 |    11   30   19   16   30   18   25   18   14   13    14
  24  |    6   11    6    6   11    5   11    7    9   19    3 |    13   20   17   16   18   14   23   13   16   22    14
  25  |    6   12    6   28   14    5   13    6   12   20    4 |    32   37   33   39   39   32   42   34   30   30    33
  26  |    6   18    8    9   13    5   10    9   11   30    3 |    23   30   25   25   29   23   24   25   21   30    22
 X27  |   10   21   18   11   16    8   13   12  ---  ---    5 |    29   27   31   25   21   31   21   29  ---  ---    25
  28  |    7   19   10    9   15    5   11    9    8   38    4 |    20   28   27   24   27   22   29   23   22   37    22
  29E |    9   19    8   14   18    8   16   10   12   19    4 |    13   21   13   20   18   14   18   18   20   25    13
 X30  |   10  ---   16   13   17   10  ---   10    9   17    5 |    31  ---   37   33   36   32  ---   36   13   14    32
  31  |    7   19    6   12   18    6   13    8   12   14    4 |    22   31   22   22   28   22   25   22   25   21    21
  32  |    8   11    6    9   12    7    9    7    9   18    3 |    17   22   23   24   24   20   21   21   19   17    19
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |    7   19    7   11   15    6   14    9   10   24      |T   22   29   26   25   28   25   27   25   22   25    23
 WRMS |    7   19    7   10   14    6   13    8    7   21      |NE  23   29   28   26   29   26   27   26   23   25    24
 MEDI |    7   18    8    9   15    5   13    9   10   20      |MD  21   28   24   24   29   22   25   23   21   25    21

Table 3.1650.1   GPS week: 1650   Day: 1   MJD: 55795.000                            

        Weighted Average                                            Orbit Dynamics (7 days)
 PRN  |  cod  emr  esa  gfz  grg  igr  jpl  mit  ngs  sio  IGS |   cod  emr  esa  gfz  grg  igr  jpl  mit  ngs  sio   IGS
------+--------------------------------------------------------+---------------------------------------------------------
  X1  |   25  ---   27  ---  ---   29  ---   12  ---  ---   16 |    39  ---   52  ---  ---   57  ---   41  ---  ---    43
   2  |    8   21   10   10   15    4   16   10    9   15    4 |    19   29   18   24   26   20   28   17   22   24    19
   3  |    7   16    7    7   12    4   12    9   11   18    3 |    13   21   17   14   16   13   21   16   18   15    14
   4  |    6   15   10   10   12    5   10    8   11   21    3 |    16   18   18   18   15   15   15   17   17   18    14
   5  |    7   13    9    8    8    4   15    9    7   30    4 |    16   20   22   18   21   19   23   18   20   22    17
   6  |    8   17    9    7   19    4   20   11   11   18    4 |    14   22   14   16   22   15   21   15   15   13    14
   7  |   18   22   11   18   17    5   20    9   12   14    5 |    32   33   29   31   31   24   32   24   26   25    25
   8  |    9   12   12    9   10    4   11    8   10   13    3 |    10   16   15   14   10   10   15   12   16   12    10
   9  |   10   20    8   10   12    5   13   10    8   19    4 |    72   75   70   72   69   73   72   73   74   79    71
  10  |    6   12    9    9   11    3   10    7    8   12    3 |    24   23   26   24   24   23   24   25   22   23    23
  11  |    8   15    7    8   19    4    9    8    6   17    3 |    14   29   22   17   34   16   26   17   19   21    18
  12  |   10   22   11   33   12    6   12    8    9   27    5 |    11   27   16   30   26   14   25   10   15   19    13
  13  |    8   19    9    9   22    4   14   11    8   16    4 |    17   26   24   19   37   17   27   18   19   17    18
  14  |    8   17    9    8   15    3   10    8    5   18    3 |    17   26   22   20   24   18   19   18   20   14    17
  15  |    7   27   10   14   17    4   19   11   10   19    5 |    12   26   21   22   27   15   23   15   15   16    15
  16  |   10   23    9   12   15    4   14    9   11   28    4 |    13   30   18   15   20   13   23   15   19   13    14
  17E |    9   23   10   11   15    4   16   10   11   24    4 |    25   36   29   28   28   27   29   31   25   36    27
  18  |    6   19   10   12    9    4   13   13   10   24    4 |    17   29   21   20   21   19   25   18   18   19    17
  19E |    7   21    7    9   15    4   10   10    7   24    4 |    13   27   18   15   20   13   19   17   15   24    14
  20  |    9   15    6   10   15    4   13    7    7   38    4 |    25   29   30   29   29   26   29   26   27   42    27
  21  |   12   22    7    6   15    5   11   11   10   15    4 |    29   39   28   22   36   24   33   20   22   26    25
  22  |    6   13    5    6    7    3   10    7    7   30    3 |    21   27   25   23   24   22   26   25   22   34    22
  23  |    7   25    8   11   17    4   15    9    7   18    4 |    13   30   21   17   28   15   26   16   16   15    16
  24  |    5   11    6    6   12    3   11    9    7   18    3 |    14   22   21   15   19   15   23   15   20   22    17
  25  |    4   12    9   21   13    4   13    8   10   18    4 |    23   31   22   25   36   21   37   22   24   23    23
  26  |    8   18    9   10    9    6   11    8    6   28    3 |    17   29   24   20   23   17   21   20   20   29    19
 X27  |    8   21   11   11   14   14   14   19  ---  ---    5 |    38   39   45   43   19   40   33   44  ---  ---    39
  28  |    9   20    8   10   12    5   12    9    6   35    4 |    18   30   26   26   28   20   29   23   22   38    22
  29E |    7   16   11   13   14    5   14    9   11   17    4 |    15   21   15   21   18   13   19   18   18   21    14
 X30  |    7  ---    9    9    9    5  ---    7    7   14    3 |    37  ---   41   40   38   38  ---   37   12   11    37
  31  |    5   16    9    9   19    4   15    8    8   10    3 |    18   29   24   18   29   19   26   18   22   17    19
  32  |   12   15    8    7   16    4   11   10   10   19    4 |    28   32   36   33   28   27   31   32   28   29    30
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |    9   18    9   12   14    4   13    9    9   22      |T   21   29   25   24   26   22   26   22   21   23    22
 WRMS |    9   18    9   10   13    4   13    9    8   20      |NE  22   29   26   24   27   23   27   23   22   23    23
 MEDI |    8   17    9   10   14    4   13    9    8   18      |MD  17   29   22   21   26   19   25   18   20   21    18

Table 3.1650.2   GPS week: 1650   Day: 2   MJD: 55796.000                            

        Weighted Average                                            Orbit Dynamics (7 days)
 PRN  |  cod  emr  esa  gfz  grg  igr  jpl  mit  ngs  sio  IGS |   cod  emr  esa  gfz  grg  igr  jpl  mit  ngs  sio   IGS
------+--------------------------------------------------------+---------------------------------------------------------
  X1  |   22  ---   28  ---  ---   28  ---   11  ---  ---   15 |    41  ---   59  ---  ---   58  ---   46  ---  ---    46
   2  |    5   23   13    8   15    5   17   10    8   17    4 |    21   33   23   27   29   21   33   20   21   26    22
   3  |    5   16    9    8   12    5   13    8    8   18    3 |    15   23   17   16   18   15   23   18   16   14    15
   4  |    7   14   35   10   14    7   12    6   13   20    5 |    16   20   41   17   16   14   18   18   21   20    17
   5  |    7   13   12    9    8    5   16    8    9   31    4 |    19   23   28   22   26   24   24   25   21   26    21
  X6  |    4  ---  ---  ---  ---   18  ---  ---  ---  ---    0 |    13  ---  ---  ---  ---   17  ---  ---  ---  ---    14
   7  |    6   20   11    7   14    4   18    7    9   13    4 |    23   31   29   21   30   22   30   23   27   21    23
   8  |    7   13    9   13   10    4    9    8   10   14    3 |    16   17   15   19   12   15   17   16   17   14    14
   9  |   13   19    7    8   13    4   12   11    7   17    4 |    44   50   44   39   51   43   48   40   46   41    43
  10  |    6   13    8    6   14    4   11    5    8   13    3 |    22   26   28   24   26   24   22   26   22   20    24
  11  |    7   13    8    8   20    4   11    6   11   20    3 |    21   29   26   23   39   22   30   21   26   25    23
  12  |    7   21    8   11   14    5   14    6    8   24    4 |    12   29   16   20   25   13   25   14   13   17    14
  13  |    7   20   10   10   22    5   16    9   10   13    4 |    18   27   25   20   38   18   27   18   21   16    20
  14  |    6   20    9   10   17    3   11    7    9   17    3 |    17   25   24   20   28   17   18   15   19   14    16
  15  |    6   24   13   11   17    5   18   11    8   21    4 |    16   26   21   19   29   18   22   22   19   18    18
  16  |   10   21    9   11   12    6   14    8   10   29    4 |    14   28   20   21   24   17   24   18   24   17    18
  17E |    7   19    7    9   16    4   17    8    9   19    4 |    22   29   21   23   24   19   27   23   21   20    20
  18  |    7   18    9   12    9    4   13   10    8   24    4 |    20   30   25   21   27   20   28   23   19   19    20
  19E |    7   22   10   11   11    3    9   10    9   27    4 |    15   25   17   17   17   13   17   19   17   21    15
  20  |    6   13   10   11   13    5   13    7    7   36    4 |    19   31   34   31   26   25   29   20   28   43    26
  21  |    8   28    9   11   16    3   16   12   11   16    4 |    24   43   29   27   38   26   36   24   27   26    27
  22  |    8   13    7    6    8    4   12    7    7   26    3 |    22   29   27   23   25   24   27   26   24   27    23
  23  |    7   22    8   11   16    4   16    6    7   16    4 |    16   27   21   18   30   16   24   14   18   16    17
  24  |    6   11    7    7   11    5   10    5    9   20    3 |    18   26   24   16   23   19   28   16   22   26    20
  25  |    7   11   11   28   13    5   12    8   11   19    4 |    26   32   27   36   36   26   38   25   24   26    26
  26  |    8   16    8   10   11    5   12    6   10   33    4 |    21   27   25   20   25   20   21   23   18   33    20
 X27  |   11   18   27   17   14   10  ---   11  ---  ---    7 |    28   27   40   22   11   28  ---   27  ---  ---    24
  28  |    8   19    9   10   12    4   12    8    8   36    4 |    16   31   28   26   26   20   29   21   25   35    21
  29E |    7   19   10   14   19    5   15    6   10   15    4 |    15   24   18   22   27   17   22   19   20   20    17
 X30  |   11  ---   14   16   11    6  ---    6    7   15    4 |    25  ---   25   31   24   23  ---   28   15   16    25
  31  |    8   16    6    9   16    6   14    9   12   12    4 |    21   29   24   23   28   20   27   19   27   20    21
  32  |    9   11    6   13   11    8    9    5    6   19    3 |    17   24   27   26   25   22   23   22   22   19    22
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |    7   18   11   11   14    5   14    8    9   22      |T   20   28   26   23   26   21   26   22   22   22    21
 WRMS |    7   18   10   12   14    5   13    7    8   22      |NE  21   28   27   23   27   22   26   22   22   22    22
 MEDI |    7   18    9   10   13    5   13    8    9   19      |MD  19   27   25   22   26   20   25   21   21   20    20

Table 3.1650.3   GPS week: 1650   Day: 3   MJD: 55797.000                            

        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  |   21  ---   20  ---  ---   17  ---   15  ---  ---   13 |    46  ---   66  ---  ---   60  ---   51  ---  ---    53
   2  |    7   21   11    8   16    4   16   10    8   17    4 |    30   39   26   31   35   28   37   27   31   34    29
   3  |    7   16    7    5   12    4   12   11    6   17    3 |    16   23   20   18   21   17   25   20   16   16    17
   4  |    8   16    6    8    8    4   14   10    8   20    3 |    21   28   21   27   20   19   25   24   21   24    21
   5  |    8   13    7    9    9    5   16   11   10   30    4 |    21   29   28   28   29   27   31   29   31   29    26
   6  |    8   21    7    7   13    4   13   10    5   19    3 |     9   22   14   13   19   11   19   13    9   18    12
   7  |    7   22   11    7   17    4   17    8   10   14    4 |    33   43   36   33   40   33   41   33   33   34    34
   8  |    9   13    9   14   10    4    8    8   10   13    3 |    21   20   14   21   15   19   17   18   19   17    19
   9  |   19   21    8   11   16    7   14   16    8   52    6 |   123  131  127  130  127  128  129  137  130  153   129
  10  |    7   12    7    5   10    4   10    6    9   14    3 |    28   30   32   29   32   29   30   32   28   27    29
  11  |    8   22    5    6   18    3    9    5    8   17    3 |    19   37   29   24   36   22   29   22   26   24    24
  12  |    9   22    6   13   15    4   14    7    7   25    4 |    19   32   20   21   28   19   27   22   18   20    19
  13  |    8   23    8    9   20    3   11    8   10   12    4 |    23   34   28   25   39   25   30   22   28   23    25
  14  |    7   18    9    9   15    3   13    7   10   17    3 |    24   32   31   27   29   24   25   28   28   22    25
  15  |    9   26    8    8   14    5   20   11    8   22    4 |    19   30   27   24   27   21   27   23   21   24    21
  16  |    9   23    8   12   13    5   14   10    8   26    4 |    14   30   21   18   23   13   24   16   14   12    15
  17E |    8   24    9   10   13    5   16    9    7   15    4 |    25   35   27   32   25   25   30   28   27   24    26
  18  |    7   19    7   12    8    3   14    9    9   26    4 |    24   35   28   28   29   25   32   26   23   24    25
  19E |    9   23    6   10   16    4   10   10    6   21    4 |    12   29   16   18   23   15   20   17   17   21    14
  20  |    5   13    8    8   13    4   14   10    7   39    4 |    36   42   39   40   37   38   41   36   39   53    37
  21  |    6   27   11   10   12    3   16   10    5   14    4 |    31   47   35   28   40   31   42   30   31   33    32
  22  |    6   12    6   10    7    3   12    8    7   26    3 |    29   32   29   32   32   30   31   33   29   33    29
  23  |    7   26    8   11   16    4   16    7    9   17    4 |    18   31   24   24   30   20   27   20   24   20    20
  24  |    6   11    6    7   11    3   12    5    7   19    3 |    18   25   23   20   24   19   29   18   23   26    21
  25  |    7   13    6   10   13    5   13    7   11   19    3 |    33   39   37   36   42   33   46   36   34   34    35
  26  |    8   15    8    9    9    3    8    6   10   34    3 |    25   30   29   28   29   26   29   30   27   38    27
 X27  |   11   17   10   13  ---    7  ---   12  ---  ---    6 |    33   38   36   41  ---   40  ---   41  ---  ---    36
  28  |   10   21    8    8   15    3   12   10   10   35    4 |    26   36   26   27   33   25   34   27   30   37    27
  29E |    9   20   12   15   19    5   16    9    9   15    4 |    22   29   25   28   31   20   28   23   23   22    22
 X30  |    7  ---   10    8   10    5  ---    9   10   18    4 |    49  ---   53   50   48   50  ---   51   17   14    49
  31  |    6   21    5   11   24    3   15    8   12   11    4 |    25   36   28   26   37   25   29   26   31   25    26
  32  |    8   11    6    8    9    4   10    6    6   21    3 |    19   26   21   23   26   21   25   20   23   18    21
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |    8   19    8   10   14    4   14    9    9   23      |T   27   35   31   30   33   29   33   30   28   29    29
 WRMS |    8   19    7    9   12    4   13    9    7   23      |NE  29   36   33   31   34   30   34   32   29   31    31
 MEDI |    8   20    8    9   13    4   14    9    8   19      |MD  24   32   28   27   29   25   29   26   26   24    25

Table 3.1650.4   GPS week: 1650   Day: 4   MJD: 55798.000                            

        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  |   21  ---   18  ---  ---   24  ---   19  ---  ---   14 |    40  ---   51  ---  ---   53  ---   49  ---  ---    45
   2  |    6   22    9    7   20    4   17   11    8   17    4 |    24   33   24   24   26   22   35   21   25   27    24
   3  |    5   15    6    7   13    5   12    7    5   19    3 |    11   18   17   18   18   13   24   13   13   15    13
   4  |    7   17    9    9   10    4   12    7   10   22    3 |    15   21   21   15   15   15   21   17   20   17    15
   5  |    7   14    8   11   14    5   16   12    7   32    4 |    16   26   27   24   27   23   28   22   22   24    21
   6  |    6   17    6    7   15    6   13    6    6   21    3 |    11   19   12   15   15   12   19   12   12   16    11
   7  |    6   20    9   10   18    5   16    8    5   16    3 |    19   31   24   19   30   21   30   20   20   22    21
   8  |    9   15    9   10   14    5   10    7    9   15    3 |    19   22   23   16   18   18   21   16   16   16    18
   9  |   10   18    6    8   14    7   13   13   10   20    4 |    55   57   55   59   55   58   56   57   57   57    56
  10  |    7   12    7   10   15    5   10    5    8   18    3 |    21   26   24   27   29   23   24   25   26   21    23
  11  |    7   17    4    9   22    3   10    5    7   15    3 |    20   31   26   24   36   22   30   18   22   21    22
  12  |    6   21    9   12   20    6   13   11    7   24    4 |    16   29   20   20   25   19   29   22   20   20    18
  13  |    6   20    6   12   24    4   13    6    5   14    3 |    13   27   20   17   36   15   26   14   14   14    16
  14  |    5   20    6    8   18    5   15    7    9   19    3 |    15   26   18   18   26   15   18   17   17   16    15
  15  |    6   26   10   11   19    5   17   16   10   22    4 |    16   29   27   23   32   19   25   25   22   20    20
  16  |    9   25    9   15   20    6   16    9    8   26    4 |    11   29   18   17   22   15   25   13   15   15    13
  17  |    8   19    8    8   17    5   17    9    6   18    4 |    26   35   31   32   34   29   31   34   33   32    30
  18  |    6   18    9   19   12    5   14    9   10   26    4 |    14   27   19   28   24   17   25   20   17   17    17
  19E |    6   30    7   12   18    5   10    8    5   24    4 |    13   31   15   14   23   11   19   13   12   19    12
  20  |    7   15    6   14   13    5   14    6    7   37    4 |    20   29   27   28   27   21   26   19   22   43    23
  21  |    6   25    7   10   18    4   15   13   10   16    4 |    22   39   29   27   38   26   36   22   28   26    25
  22  |    5   14    7   11   12    5   11    9    8   26    3 |    20   24   19   29   25   20   21   26   23   27    21
  23  |    6   23    8   13   19    4   17    6    5   18    4 |    12   28   22   20   30   16   27   14   16   15    16
  24  |    7   11    5    9   10    4   12    7    7   18    3 |    19   22   22   18   18   18   28   14   16   23    18
  25  |    5   13    8   11   19    4   15    7    9   20    3 |    23   30   31   28   37   25   39   27   26   30    27
  26  |    5   15    7    7   16    3    9    8    8   32    3 |    20   29   25   23   29   23   29   26   26   33    23
 X27  |   12   27   13   14  ---   12   10   14  ---  ---    6 |    24   34   32   35  ---   34   32   31  ---  ---    27
  28  |    8   21    9   11   15    5   13    9    5   36    4 |    19   31   29   24   27   21   29   23   22   34    23
  29  |   12   22    8   18   22    5   15   15    6   19    5 |    53   56   57   60   61   55   59   56   57   53    56
 X30  |    8  ---    8   12   17    4  ---    7    8   13    4 |    39  ---   37   42   42   38  ---   40   16   16    37
  31  |    7   24    6   12   20    3   12   11   12   14    4 |    19   32   23   20   29   18   25   18   25   20    20
  32  |    7   11    4    9   13    4   10    6    7   21    3 |    11   21   17   14   20   13   20   13   12   13    13
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |    7   19    7   11   17    5   14    9    8   22      |T   21   29   26   25   29   23   28   23   22   24    23
 WRMS |    7   19    7   11   15    5   13    8    6   25      |NE  20   28   25   24   28   22   28   22   21   23    22
 MEDI |    7   18    8   11   17    5   13    8    7   19      |MD  19   29   24   23   27   20   26   20   20   20    21

Table 3.1650.5   GPS week: 1650   Day: 5   MJD: 55799.000                            

        Weighted Average                                            Orbit Dynamics (7 days)
 PRN  |  cod  emr  esa  gfz  grg  igr  jpl  mit  ngs  sio  IGS |   cod  emr  esa  gfz  grg  igr  jpl  mit  ngs  sio   IGS
------+--------------------------------------------------------+---------------------------------------------------------
  X1  |   22  ---   17  ---  ---   26  ---   16  ---  ---   13 |    41  ---   52  ---  ---   56  ---   45  ---  ---    45
   2  |    8   21   10   13   18    7   26   10    9   17    5 |    21   30   20   20   28   21   34   19   19   24    19
   3  |    7   15    6    9   12    4   11    7    8   21    3 |    16   19   20   20   20   18   22   16   17   19    16
   4  |   23   15   11   11   13    4   11   10    8   22    5 |    20   21   19   20   19   15   20   20   17   25    15
   5  |    7   15    8    9   14    5   17   11    7   34    4 |    13   25   21   18   27   18   24   20   19   25    17
   6  |    7   15    5    7   13    3   12    6    8   24    3 |    10   17   12   13   13   11   16   10   10   18    10
   7  |    6   21    7   11   18    4   19   10    9   19    4 |    25   34   26   23   32   23   30   23   24   26    24
  X8  |    5  ---  ---  ---  ---   13  ---  ---  ---  ---    0 |     8  ---  ---  ---  ---   10  ---  ---  ---  ---     8
   9  |    9   17    7   11   12    4   14   14    9   25    4 |    57   64   58   56   61   58   62   57   61   59    58
  10  |    7   13    6    9   17    4   10    5    9   21    3 |    22   27   25   22   33   24   24   24   26   22    23
  11  |    4   17    4    7   18    4   12    6    8   15    3 |    18   28   26   22   38   22   28   20   22   24    22
  12  |    9   20   13    9   18    5   15   14    8   25    4 |    14   29   23   20   27   18   28   24   14   17    17
  13  |    5   22    9   13   20    3   15    8    9   17    4 |    16   29   20   17   36   15   24   14   16   17    16
  14  |    9   19    7    8   15    4   15    9   10   19    4 |    17   26   20   23   25   17   19   18   19   19    16
  15  |    9   25   10   13   17    4   21   16   13   21    5 |    13   27   20   22   29   17   23   23   18   19    17
  16  |   10   21   10   18   19    6   15    7   10   26    4 |    13   30   21   23   21   17   25   16   19   16    16
  17  |    9   20    8   10   16    3   18    8    8   31    4 |    26   33   30   31   31   29   33   31   29   30    28
  18  |    6   15    9   11    9    5   14   10    7   26    3 |    17   27   24   20   23   20   25   20   20   19    19
  19E |    7   26    6    9   15    4   10   14    6   22    4 |    19   34   23   22   27   22   27   24   22   22    21
  20  |    7   13    7   13   14    5   13   15   12   39    4 |    26   31   31   30   35   29   30   26   30   48    28
  21  |    5   23    5    9   17    5   20   14    8   14    4 |    25   39   30   26   41   28   39   26   26   26    28
  22  |    6   11    6    8    9    4   12   12    6   26    3 |    23   25   24   25   24   23   24   27   21   26    21
  23  |    6   23    9   14   18    4   15    8    9   20    4 |    14   29   21   21   31   16   24   13   16   16    16
  24  |    6   13    6    8   12    4   12    7    9   19    3 |    18   24   25   19   26   21   29   18   23   29    21
  25  |    6   12    9   10   20    7   15    8    8   21    4 |    25   32   31   33   37   28   41   27   26   30    28
  26  |   10   14    6   10   11    4   11    7   12   33    4 |    17   27   21   20   25   19   23   23   21   33    19
 X27  |   14   20   16   14  ---   12   17   15  ---  ---    7 |    23   34   24   27  ---   26   22   27  ---  ---    23
  28  |    8   20    6   13   13    4   13    7   11   36    4 |    18   33   24   28   27   23   30   25   23   36    22
  29  |   11   20    9   14   17    5   17    8    9   22    4 |    30   35   35   35   32   32   35   31   30   30    31
 X30  |   10  ---    7    9   17    8  ---   11  ---  ---    5 |    56  ---   56   55   55   56  ---   58  ---  ---    55
  31  |    7   21    7   10   24    4   18   11   10   13    4 |    19   28   19   20   30   17   25   17   21   23    18
  32  |    9   13    6    8   12    3   13    9    8   19    3 |    14   20   19   18   23   18   19   17   15   17    16
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |    9   18    8   11   16    4   15   10    9   24      |T   21   29   26   24   30   23   27   24   22   25    22
 WRMS |    8   18    8   11   16    4   15    9    8   24      |NE  21   29   26   24   30   24   27   24   22   25    22
 MEDI |    7   19    7   10   16    4   15   10    9   21      |MD  18   29   24   22   28   21   25   23   21   24    19

Table 3.1650.6   GPS week: 1650   Day: 6   MJD: 55800.000                            

        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  |   20  ---   18  ---  ---   15  ---   17  ---  ---   13 |    46  ---   65  ---  ---   63  ---   57  ---  ---    56
   2  |    7   23    9   10   17    5   15   14   11   21    4 |    29   39   26   28   33   28   37   29   30   37    28
   3  |    5   15    6    9   13    4   12    7   11   21    3 |    17   19   18   17   22   17   24   19   16   17    16
   4  |   11   13    6   11   10    5   11   14   11   22    4 |    15   17   13   19   16   12   20   19   13   21    13
   5  |    5   17    6    8   10    3   19   14    9   36    4 |    20   26   26   26   31   24   27   29   25   27    23
   6  |    6   16    5    7   13    4   14    7   11   24    3 |    13   15   10   13   16   12   14   13   12   16    10
   7  |    5   21    6   10   18    4   15    8    6   18    3 |    26   33   29   24   36   24   32   22   26   23    25
   8  |    7   16    6   11   11    4   12   10    9   13    3 |     9   14    6    4    6    7    8    6    4    6     9
   9  |    9   25    5    9   11    3   10   15   13   36    4 |    43   51   41   39   44   42   43   42   43   51    42
  10  |    6   16    6    9   11    5   12    8    7   22    3 |    27   28   32   31   35   27   26   32   29   26    28
  11  |    6   13    6    7   19    4   13    8    8   15    3 |    20   30   30   22   36   22   29   21   23   22    23
  12  |    9   22    8   12   18    6   14   16    7   28    4 |    18   29   21   23   24   17   28   28   18   22    19
  13  |    5   19    5   12   21    5   11    7    8   18    3 |    14   24   19   16   38   14   25   12   15   13    15
  14  |    7   20    7    8   16    4   18   10    7   17    4 |    18   25   22   20   25   16   21   22   20   19    17
  15  |    8   29    8   10   16    4   23   20   15   22    5 |    19   30   27   27   30   21   26   25   24   22    22
  16  |    9   23    8   19   19    5   15    7   10   25    4 |    12   28   19   22   23   16   24   15   18   16    15
  17  |    6   21    7   11   18    3   16    9    9   34    4 |    26   33   27   31   30   27   35   29   26   33    27
  18  |    6   19    7   12   10    4   14   10    9   28    4 |    21   28   25   22   28   21   30   26   22   22    22
  19  |   10   24    6   11   18    5   13   12   11   20    4 |    22   27   19   16   24   18   23   20   22   23    19
  20  |    9   11    6   13   12    4   14    7    8   39    4 |    27   36   34   35   37   30   35   29   28   49    31
  21  |    6   29    6   11   16    4   19   13    9   16    4 |    28   44   31   27   42   29   45   28   28   29    30
  22  |    5   14    4    7    8    4   13   16    7   28    3 |    26   29   28   27   30   25   27   32   27   28    26
  23  |    6   21    7   11   18    3   17    7    9   18    4 |    10   25   18   15   28   12   22   11   12   13    12
  24  |    8   12    5    8   13    3   13   10    9   21    3 |    16   23   22   15   21   16   24   15   18   24    17
  25  |    8   13    8   30   15    5   13    7   12   19    5 |    27   35   33   28   39   28   43   29   27   29    29
  26  |    7   15    7    9   12    3   10    9   13   32    4 |    23   25   28   28   29   24   24   28   23   34    24
 X27  |   12   26    8   13  ---    9   15   19  ---  ---    6 |    22   28   20   23  ---   22   19   26  ---  ---    19
  28  |    8   24   10   13   12    5   14    8   13   36    4 |    19   35   32   30   29   23   35   26   28   35    26
  29  |    5   23    7   15   16    4   16   12    8   20    4 |    31   31   33   39   30   31   35   35   29   31    31
 X30  |   12  ---   12   13   15    8  ---   14  ---  ---    6 |    52  ---   45   55   51   48  ---   56  ---  ---    50
  31  |    7   21    8   11   21    5   17    9    9   16    4 |    24   31   24   18   34   20   28   21   26   24    22
  32  |    9   13    5   10   12    3   10    8    9   20    3 |    11   17   17   16   21   12   16   12   14    9    13
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |    7   20    7   12   15    4   15   11   10   25      |T   22   28   26   24   29   23   27   25   22   24    23
 WRMS |    7   20    7   14   15    4   14   10    8   23      |NE  22   28   26   24   30   23   27   25   22   24    24
 MEDI |    7   19    6   11   15    4   14   10    9   21      |MD  21   28   26   23   30   22   26   26   23   23    22



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 4.1650   GPS week: 1650   MJD: 55794.0-55800.0

CENT| CLK EPO  |        BRUS       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3057 |U   20    15    40 |U    6     8    24 |U   10    12    22 |
emr | emr 2852 |U   20    13    43 |U    6     8    23 |    15    24    25 |
esa | esa 3044 |    18    14    41 |U    6     7    23 |    12    22    22 |
gfz | gfz 2946 |U   19    14    43 |U    6     7    22 |U   12    20    21 |
grg | grg 2893 |    19    15    43 |U    6     8    25 |    14    23    24 |
igr | igr 2980 |    18    11    39 |     5     7    22 |    12    22    23 |
igs | igs 2951 |    19    12    39 |     6     7    23 |    13    22    21 |
jpl | jpl 2823 |U   19    11    43 |U    6     7    24 |    14    24    28 |
mit | mit 3044 |U   13    11    32 |U    6     7    25 |U   13    22    28 |



Table 5: Daily Precise Navigation Summary using the corresponding Centre orbit 
         positions and satellite clock corrections at 15 min intervals.

         Each line gives the daily station RMS w.r.t. the estimated coordinates 
         for the Latitude, Longitude and Height components.
        
         CLK  - Satellite clocks used.
         EPO  - Number of satellite clock epochs available for that day.
         Units: mm.

Table 5.1650.0   GPS week: 1650   Day: 0   MJD: 55794.0

CENT| CLK EPO  |        BRUS       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3050 |    12    12    29 |     6     9    26 |    11    13    28 |
emr | emr 2880 |    14    12    38 |     6     9    23 |    13    13    25 |
esa | esa 3072 |    12    10    28 |     6     8    28 |    11    12    25 |
gfz | gfz 2969 |    10     9    28 |     6     8    24 |    10    11    24 |
grg | grg 2976 |    12     9    29 |     6     9    35 |    12    13    24 |
igr | igr 2979 |    12    11    29 |     6     8    25 |    11    12    24 |
igs | igs 2975 |    12    10    28 |     6     9    28 |    12    12    24 |
jpl | jpl 2880 |    14    12    36 |     6     9    29 |    13    14    24 |
mit | mit 3072 |    13    12    37 |     7     8    34 |    12    13    32 |

Table 5.1650.1   GPS week: 1650   Day: 1   MJD: 55795.0

CENT| CLK EPO  |        BRUS       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3052 |    46    16    91 |     7    11    27 |    11     9    27 |
emr | emr 2880 |    45    17    91 |     7     8    23 |    13     9    30 |
esa | esa 3072 |    46    15    92 |     6     8    23 |    12     8    25 |
gfz | gfz 2975 |    46    15    91 |     6     8    20 |    12     8    24 |
grg | grg 2976 |    46    14    91 |     6     9    25 |    13     9    27 |
igr | igr 3037 |    46    15    92 |     6     7    22 |    12    11    26 |
igs | igs 2956 |    46    15    91 |     6     9    24 |    11     8    25 |
jpl | jpl 2877 |    46    15    92 |     6     8    25 |    12     8    31 |
mit | mit 3072 |    15    10    35 |     7     7    21 |    12     9    25 |

Table 5.1650.2   GPS week: 1650   Day: 2   MJD: 55796.0

CENT| CLK EPO  |        BRUS       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3057 |    27    30    50 |     6     8    27 |    10    26    21 |
emr | emr 2784 |    15    15    33 |     6     9    26 |    22   107    30 |
esa | esa 2976 |    17    31    53 |     7     9    28 |    18    94    27 |
gfz | gfz 2877 |    21    37    67 |     6     8    30 |    24    96    25 |
grg | grg 2880 |    19    36    64 |     5     8    21 |    22   103    26 |
igr | igr 2875 |    16    11    34 |     6     7    27 |    17    96    26 |
igs | igs 2853 |    16    14    34 |     6     9    28 |    23   100    23 |
jpl | jpl 2688 |    17    12    38 |     7     9    31 |    19    97    28 |
mit | mit 2976 |    14    18    37 |     7     9    29 |    20    82    35 |

Table 5.1650.3   GPS week: 1650   Day: 3   MJD: 55797.0

CENT| CLK EPO  |        BRUS       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3065 |    10    12    20 |     7     6    20 |     9    10    22 |
emr | emr 2880 |    14    14    26 |     7     6    23 |    12     9    21 |
esa | esa 3072 |    11    10    21 |     6     5    23 |     9     8    18 |
gfz | gfz 2976 |    10     9    21 |     6     6    22 |     9     6    16 |
grg | grg 2880 |    11    12    23 |     6     6    25 |    11     8    21 |
igr | igr 3020 |    10    10    23 |     6     6    21 |     8     8    17 |
igs | igs 2962 |    11    11    24 |     6     6    21 |     9     8    18 |
jpl | jpl 2784 |    13    12    34 |     6     6    22 |    16    17    36 |
mit | mit 3072 |    10    10    22 |     7     6    25 |    13    10    26 |

Table 5.1650.4   GPS week: 1650   Day: 4   MJD: 55798.0

CENT| CLK EPO  |        BRUS       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3058 |    15    12    36 |     5     5    27 |    12     9    22 |
emr | emr 2880 |    16    10    39 |     5     8    27 |    14    13    27 |
esa | esa 3072 |    16    12    35 |     5     5    23 |    12    13    22 |
gfz | gfz 2975 |    15     9    34 |     5     3    23 |    11     8    22 |
grg | grg 2880 |    16    12    34 |     6     6    27 |    13    12    27 |
igr | igr 3020 |    15    11    36 |     5     4    23 |    12    12    25 |
igs | igs 3047 |    15    12    35 |     5     5    23 |    12    11    22 |
jpl | jpl 2875 |    15    10    38 |     5     7    22 |    13    10    31 |
mit | mit 3072 |    15    11    34 |     6     5    28 |    13    20    26 |

Table 5.1650.5   GPS week: 1650   Day: 5   MJD: 55799.0

CENT| CLK EPO  |        BRUS       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3065 |    16    11    34 |     5     9    19 |    11     8    15 |
emr | emr 2784 |    18    14    41 |     8    11    21 |    13    11    20 |
esa | esa 2976 |    17    11    35 |     5     9    16 |    12     8    15 |
gfz | gfz 2878 |    17    10    35 |     5     9    16 |    10     7    15 |
grg | grg 2784 |    18    13    37 |     5    10    21 |    13    10    19 |
igr | igr 2902 |    16    11    33 |     4     8    14 |    12     8    15 |
igs | igs 2856 |    18    11    36 |     5     9    17 |    11     7    15 |
jpl | jpl 2783 |    18    10    38 |     5     8    18 |    12    10    18 |
mit | mit 2976 |    16    12    34 |     5     8    16 |    14     8    21 |

Table 5.1650.6   GPS week: 1650   Day: 6   MJD: 55800.0

CENT| CLK EPO  |        BRUS       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3058 |    12    10    22 |     5     5    20 |    10     8    22 |
emr | emr 2880 |    14     9    31 |     7     6    24 |    14     9    23 |
esa | esa 3072 |    11     8    23 |     6     7    21 |    10     8    22 |
gfz | gfz 2975 |    12     8    23 |     6     7    21 |     9     7    21 |
grg | grg 2880 |    13    10    24 |     6     7    22 |    13    10    25 |
igr | igr 3029 |    12     8    24 |     6     6    21 |    10     8    24 |
igs | igs 3013 |    12     8    27 |     5     6    21 |    11     8    22 |
jpl | jpl 2879 |    12     8    28 |     5     6    20 |    13    11    26 |
mit | mit 3072 |    10     7    24 |     7     8    24 |    11    10    32 |


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 6.1650   GPS week: 1650   MJD: 55794.500-55800.500

                                                         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 |       1     -14     -15    -111      1 |       6     27
            |      26      27     100      93      7 |       5
emr   uuuuu |     -12      43     132      61      1 |      50     56
            |      18      17      69      80      5 |       4
esa   uuuuu |      28     -34      43     168     -1 |      10     28
            |       9       9      50      63      7 |       5
gfz   uuuuu |     -20      35     -86     -51     -2 |       6     25
            |      12      23      93      66      4 |       5
grg   uuuux |      -2     -21     -90    -208    -70 |      78    125
            |      32      20      45     105     26 |      18
igr   xxxxx |      -2      10      23     -21     -3 |       3     27
            |      12      15      75      65     11 |       4
irf   xxxxx |      17       1     -33      -4      1 |       1     24
            |       7       7      29      43      4 |       4
jpl   uuuuu |     -48     -38      92     -40     -4 |      49     57
            |      26      14      97      75     16 |       5
mit   uuuuu |      18      -4    -107    -109     -1 |      14     28
            |      11      13      50      47      3 |       4
ngs   uuuuu |     -14      15      60       5      0 |       7     23
            |      25      20     126      66      6 |       4
sio   uuuuu |      58      66     -10     207      8 |      33     41
            |      14      20      55      56      5 |       5


Table 7.1650.0   GPS week: 1650   Day: 0   MJD: 55794.500

                                                         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 |       1     -30     -60     -86      9 |       5     30
emr   uuuuu |      22      62     168     112      7 |      50     58
esa   uuuuu |      30     -22      -6     179      8 |      12     31
gfz   uuuuu |     -29      37     -53    -167     -6 |       9     29
grg   uuuux |     -44       2     -51    -320    -81 |     106    145
igr   xxxxx |      21      12     136     -92     17 |       2     28
irf   xxxxx |      22      -2     -41      37     -2 |       2     26
jpl   uuuuu |     -24     -29     215    -147     22 |      43     54
mit   uuuuu |      23      -7    -154     -40     -5 |      15     31
ngs   uuuuu |     -33     -18      68     107     -4 |       7     24
sio   uuuuu |      73      62     -64     233      3 |      34     43

Table 7.1650.1   GPS week: 1650   Day: 1   MJD: 55795.500

                                                         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     -28     -30    -214      6 |       9     31
emr   uuuuu |     -29      60       5     138     -5 |      54     61
esa   uuuuu |      40     -29     107     183    -11 |      16     33
gfz   uuuuu |     -35       1     -12      25     -8 |      12     29
grg   uuuux |      10       6     -98    -125    -68 |     100    142
igr   xxxxx |      -9      37      20      55      3 |       7     29
irf   xxxxx |       3      10     -35     -37     -2 |       5     26
jpl   uuuuu |     -67     -47     213     -42      9 |      51     59
mit   uuuuu |      -7      10    -135    -159     -5 |      18     31
ngs   uuuuu |      34       1     -62     -54     12 |      10     25
sio   uuuuu |      38      79      -6     136      9 |      36     45

Table 7.1650.2   GPS week: 1650   Day: 2   MJD: 55796.500

                                                         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      30     128      63      1 |       7     30
emr   uuuuu |      -5      48     152      73     -2 |      52     59
esa   uuuuu |      19     -45      77     273     -6 |      12     31
gfz   uuuuu |       1      21     -10     -83      2 |       8     27
grg   uuuux |     -15     -37     -43    -123    -58 |      80    123
igr   xxxxx |       7       3     -90     -34     -5 |       6     28
irf   xxxxx |      22       6      30      51      3 |       2     25
jpl   uuuuu |     -85     -30      56    -120     -9 |      51     60
mit   uuuuu |      21       6      -1     -63      0 |      15     29
ngs   uuuuu |       5      12    -150     -42      0 |       9     24
sio   uuuuu |      71      85      43     248     13 |      33     42

Table 7.1650.3   GPS week: 1650   Day: 3   MJD: 55797.500

                                                         AC LOD  AC LOD
CENT  FLAG  |   Xpole   Ypole     Xrt     Yrt    LOD |    BIAS  BIAS RMS
            |   [uas]   [uas]   [uas/d] [uas/d]  [us]|    [us]    [us]
------------+----------------------------------------+------------------
cod   xxxxx |      29     -46     -94    -136      5 |      -2     27
emr   uuuuu |      -9      27     173     -20      2 |      42     50
esa   uuuuu |      14     -42     -18     111     -2 |       1     26
gfz   uuuuu |     -17      26       3      23     -5 |      -1     24
grg   uuuux |      23     -35     -79     -96    -92 |      64    116
igr   xxxxx |     -10      20      -6      48    -12 |      -3     29
irf   xxxxx |      20       8     -57      27      5 |      -6     24
jpl   uuuuu |     -33     -46      84     -44     -3 |      43     54
mit   uuuuu |      19      12    -132     -90      3 |       6     25
ngs   uuuuu |     -18      26      89     -46     -3 |       0     22
sio   uuuuu |      61      89    -106     281     14 |      25     33

Table 7.1650.4   GPS week: 1650   Day: 4   MJD: 55798.500

                                                         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 |     -41       3      24    -100      3 |       2     26
emr   uuuuu |     -16      13     193     -78      2 |      46     52
esa   uuuuu |      35     -45      87     210      5 |       4     26
gfz   uuuuu |     -28      39    -190     -46     -3 |       1     24
grg   uuuux |     -36     -12    -181    -285   -103 |      65    116
igr   xxxxx |      -7      -6      86     -86     -5 |      -1     27
irf   xxxxx |      16      -2     -36      -4      5 |      -3     23
jpl   uuuuu |     -15     -29       6       5    -22 |      47     56
mit   uuuuu |      22     -15     -94    -113      2 |      10     25
ngs   uuuuu |     -24      38     108     -22     -4 |       2     22
sio   uuuuu |      44      61      31     234     11 |      29     36

Table 7.1650.5   GPS week: 1650   Day: 5   MJD: 55799.500

                                                         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 |      31     -32    -156    -209     -8 |      10     23
emr   uuuuu |     -32      42      69     106     -2 |      54     58
esa   uuuuu |      27     -27      50      91     -4 |      12     26
gfz   uuuuu |     -16      76    -229     -48      2 |       8     21
grg   uuuux |      47     -24     -84    -164    -63 |      65    116
igr   xxxxx |     -13      -5     -28      34     -2 |       7     23
irf   xxxxx |      22      -5     -52     -50     -2 |       5     21
jpl   uuuuu |     -70     -62     111      72     -2 |      54     59
mit   uuuuu |      27     -17    -109    -146     -3 |      17     27
ngs   uuuuu |     -31       9     156       4      3 |       9     21
sio   uuuuu |      67      38      33     172      0 |      38     43

Table 7.1650.6   GPS week: 1650   Day: 6   MJD: 55800.500

                                                         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       4      86     -97    -11 |       9     23
emr   uuuuu |     -16      48     166      97      8 |      52     56
esa   uuuuu |      30     -29       3     130      4 |      10     25
gfz   uuuuu |     -18      41    -113     -59      3 |       7     20
grg   uuuux |       2     -47     -96    -346    -24 |      62    115
igr   xxxxx |      -4       8      43     -71    -15 |       6     23
irf   xxxxx |      16      -6     -42     -52      3 |       4     20
jpl   uuuuu |     -45     -25     -39      -3    -22 |      54     59
mit   uuuuu |      21     -16    -126    -153      2 |      16     26
ngs   uuuuu |     -32      37     213      86     -6 |      10     21
sio   uuuuu |      50      44      -4     142      4 |      38     42



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