[IGSREPORT-20872] Wk 1688 IGS Final Orbits

IGS ACC igs.acc at noaa.gov
Thu May 31 10:11:26 PDT 2012


Author:  AC Coordinator / NOAA NGS

sum-file Version 2.0
Final IGS Orbit Combination - Week 1688   (May 13, 2012 - May 19, 2012)

Contacts: J. Griffiths (jake.griffiths at noaa.gov)
          K. Choi (kevin.choi 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:

igs1688[0-6].sp3  IGS GPS ephemeris files in SP3 format.
igs1688[0-6].clk  IGS GPS satellite and station clocks in clock RINEX format.
igs1688[0-6].cls  IGS GPS clock combination summary report.
igs16887.erp      Earth Rotation Parameters (ERP) and their rates as well as
                  Universal Time (UT1-UTC) and Length Of Day (LOD) associated 
                  with IGS ephemerides.
igs16887.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   | 24
                0  |  COD   | CHUR QAQ1 CHUR KOUC QAQ1
                0  |  EMR   | 30 30 HERS HERS
                0  |  ESA   | NNOR UNSA
                0  |  GFZ   | 32
                0  |  JPL   | 32 CHUM IISC IRKJ RAMO
                0  |  MIT   | 30 30 32 REUN
                1  |  COD   | KOUC KOUC XMIS
                1  |  EMR   | DRAO DRAO
                1  |  ESA   | IRKJ NNOR
                1  |  GFZ   | BRFT BRMU MATE
                1  |  GRG   | IRKJ
                1  |  MIT   | 28 28 30 32 DAV1 GODE NICO DAV1 GODE NICO
                2  |  ALL   | 24
                2  |  COD   | KOUC KOUC RCMN
                2  |  EMR   | 30 30 HERS HERS MCM4 WTZR
                2  |  ESA   | IRKJ NNOR UNSA
                2  |  GFZ   | 32 CHAN FAIR MAG0 SSIA
                2  |  GRG   | IRKJ
                2  |  JPL   | 30 32 CHUM
                2  |  MIT   | 30 32 30 32 GODE GODE
                3  |  ALL   | 24
                3  |  COD   | KOUC KOUC
                3  |  EMR   | 30 HERS
                3  |  ESA   | IRKJ NNOR
                3  |  GFZ   | BOR1 DAV1
                3  |  GRG   | IRKJ
                3  |  JPL   | 30
                3  |  MIT   | 1 6 23 26 31 32 1 6 23 26 30 31 32 CAS1 GODE MDVJ
                4  |  COD   | KOUC KOUC WILL
                4  |  ESA   | NNOR SOFI UNSA
                4  |  GFZ   | 32 DAV1 THTI TWTF
                4  |  JPL   | 32
                4  |  MIT   | 1 30 1 30 32 MDVJ
                5  |  ALL   | 24
                5  |  COD   | KOUC KOUC
                5  |  ESA   | IRKJ NNOR UNSA
                5  |  GFZ   | 32 BOR1 BRFT DAV1
                5  |  GRG   | IRKJ
                5  |  JPL   | IRKJ
                5  |  MIT   | 23 30 32 15 23 30 32 CAS1 DAV1 GODE CAS1 DAV1
                6  |  ALL   | 24
                6  |  COD   | KOUC FLRS KOUC
                6  |  EMR   | 30 30 HERS
                6  |  ESA   | IRKJ NICO
                6  |  GFZ   | 30 BRFT DAV1
                6  |  GRG   | IRKJ IRKJ
                6  |  MIT   | 30 30 31

 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
               ----+--------+---------------
                0  |  SIO   | ALL (high Transformation - See Table 2)
                1  |  SIO   | ALL (high Transformation - See Table 2)
                2  |  SIO   | ALL (high Transformation - See Table 2)
                3  |  SIO   | ALL (high Transformation - See Table 2)
                4  |  SIO   | ALL (high Transformation - See Table 2)
                5  |  SIO   | ALL (high Transformation - See Table 2)
                6  |  SIO   | ALL (high Transformation - See Table 2)

 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 current IGS reference frame. These rotations were
    estimated in the IGS SINEX combination process, performed by the IGS Reference
    Frame Coordinator at the Institut Geographique National (IGN). The estimated 7
    transformations, from which only the 3 rotations are applied to the orbit and
    ERP values, are:
    
            |    DX     DY     DZ      RX     RY     RZ     SCL
     Centre |   [mm]   [mm]   [mm]   [uas]  [uas]  [uas]   [ppb]
     -------+---------------------------------------------------
       COD  |     .0    -.3   -1.7     -59    -24     34     .42
       EMR  |    5.1   -6.2    7.3       8      8    -12     .60
       ESA  |    1.2   -1.6   20.9     -67     35     79     .33
       GFZ  |    -.5     .8    -.6     -42     16    -15     .27
       GRG  |    3.6     .2   19.2     -45     20     -3     .19
       JPL  |    2.6   -1.2   11.1     -27     17      1     .57
       MIT  |    2.1   -4.6   19.1     -46     32    -68     .33
       NGS  |    9.6   -5.8   14.7     -75    -29     47     .46
       SIO  |    3.1   -2.8   -4.7     -57   -185    124     .41


 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 1.1688.a). It also displays the computed satellite
position sigmas for the combined orbits (table 1.1688.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 2.1688.[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 3.1688.[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 5.1688.0-6).

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 1688 summary.                       (May 13, 2012 - May 19, 2012)

Table 1.1688.a   GPS week: 1688   MJD: 56060.000-56066.000

         Mean and standard deviations of transformation parameters to the 
         combined IGS orbit.
         WRMS - orbit RMS weighted by the SP3 header accuracy codes.
         STA  - Mean number of stations in the daily solutions.
   
CENT STA|   DX    DY    DZ    RX    RY    RZ   SCL  RMS  WRMS|    TOFT   TDRFT   SDEV    RMS
        |  [mm]  [mm]  [mm] [uas] [uas] [uas] [ppb] [mm] [mm]|    [ps]  [ps/d]   [ps]   [ps]
--------+----------------------------------------------------+------------------------------
cod  259|    0     0    -2    20    46    27  -.25    8    8 |    -457    -424     18     77
        |    0     0     1    13    14     6   .02           |     579     949
emr   93|    2     0    -5  -105    51   -21   .33   17   17 |    4581     -30     19    108
        |    2     1     1    13    27    15   .03           |     652    1339
esa  176|    0     0     1     1    11   -13   .23    8    8 |     -25    -539     14    123
        |    0     0     1    22    22    12   .02           |    1139    1954
gfz  194|    0     0     1   -24   -62    -5  -.23   10   10 |     104      50     28    107
        |    0     0     1    54    67     9   .03           |     305     750
grg  125|    0     2     7   -11   -35    -6   .60   13   12 |     -89     123     46    183
        |    1     1     3     8    10     9   .03           |     293     578
igr  n/a|    0     0    -2   -73    -6    -5  -.10    5    4 |    3119    -605     18     70
        |    0     0     1    18    12    14   .02           |    1211    1269
jpl  172|   -1     1    -4   -53   -40    37   .43   15   14 |    5063    -264     18     82
        |    1     1     1    13    15    24   .02           |     799    1265
mit  320|    0    -1     0     7   -69   -29  -.47   12   11 |    -396     314     25    160
        |    1     0     1    17    19    17   .01           |     398     577
ngs  222|    0    -1     0    85    74    -8  -.24   11    9 |  150439 -143277   2052   3682
        |    0     0     2    24    41    11   .05           |  399077  377779
sio  238|    0     0    -4    38   377   135  -.38   20   21 |     ---     ---    ---    ---
        |    1     1     1    13    15    19   .02           |     ---     ---


Table 1.1688.b   GPS week : 1688   MJD: 56060.000-56066.000   

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



Table 2: Daily transformation of each centre to the combined IGS orbit and
         clocks for each day of the week. The transformation displayed is the
         sum of a priori and estimated transformations.
         WRMS - RMS weighted by the centres SP3 header accuracy codes.
         STA  - Number of stations in the daily solutions.
   
Table 2.1688.0   GPS week: 1688   Day: 0   MJD: 56060.000                            

CENT STA|   DX    DY    DZ    RX    RY    RZ   SCL  RMS  WRMS|    TOFT   TDRFT   SDEV    RMS
        |  [mm]  [mm]  [mm] [uas] [uas] [uas] [ppb] [mm] [mm]|    [ps]  [ps/d]   [ps]   [ps]
--------+----------------------------------------------------+------------------------------
cod  259|    0     0    -5    16    21    18  -.24    9    9 |    -125    -800     18     75
        |                     32    15                       |
emr   93|    4    -2    -7   -96    74   -13   .28   17   17 |    3471    1397     17     82
        |                    -14  -111                       |
esa  176|    0     0     1   -11   -18    -9   .23    8    8 |    -337    -515     12    115
        |                     -6   -21                       |
gfz  194|    0     0     0    12    33   -13  -.21   12   12 |    -167     681     28    105
        |                    -11    18                       |
grg  125|    0     2    12     0   -56    -8   .57   13   13 |     -11       9     40    170
        |                    -11     3                       |
igr  n/a|    0     0    -3   -91   -28    -7  -.11    5    5 |    3604     499     19     67
        |                      3     9                       |
jpl  172|   -3     1    -6   -50   -39    43   .42   15   14 |    4603     794     18     92
        |                     23     6                       |
mit  320|    0     0    -2    14   -33     6  -.47   14   13 |    -216      79     29    147
        |                    -44    15                       |
ngs  222|    0    -2     3    67    22   -29  -.34   11    8 |    -198    -712   2078   3731
        |                    -18    35                       |
sio  238|    0     0    -6    28   398   170  -.38   21   20 |     ---     ---    ---    ---
        |                   -107  -198                       |

Table 2.1688.1   GPS week: 1688   Day: 1   MJD: 56061.000                            

CENT STA|   DX    DY    DZ    RX    RY    RZ   SCL  RMS  WRMS|    TOFT   TDRFT   SDEV    RMS
        |  [mm]  [mm]  [mm] [uas] [uas] [uas] [ppb] [mm] [mm]|    [ps]  [ps/d]   [ps]   [ps]
--------+----------------------------------------------------+------------------------------
cod  259|    0     0    -3    11    32    22  -.24    8    7 |    -719      54     18     86
        |                     29     3                       |
emr   93|    1    -3    -6  -126    55   -31   .31   18   18 |    4599    1958     21    130
        |                    -11   -78                       |
esa  176|    1     0     3   -35    18   -32   .25    8    8 |   -1607    1402     15    148
        |                    -18   -31                       |
gfz  194|    0     0     1    63    -4   -11  -.26   10   10 |    -277    1171     28    121
        |                    -54    37                       |
grg  125|    1     1     9   -18   -40   -14   .62   14   12 |    -576    1126     42    203
        |                      0    -9                       |
igr  n/a|    0     0    -3   -95   -13    18  -.08    5    5 |    3869    1156     20     74
        |                    -38    -1                       |
jpl  172|   -3     0    -6   -52   -20    58   .42   15   14 |    5106    1548     19     82
        |                    -14   -29                       |
mit  320|   -2    -1     0    28   -89   -21  -.47   14   12 |    -654     886     23    132
        |                    -30    46                       |
ngs  222|    0     0     0    58    22     8  -.26   11    8 |    -676     -19   1819   3809
        |                    -41     8                       |
sio  238|   -3     0    -6    38   360   149  -.41   21   24 |     ---     ---    ---    ---
        |                    -95  -184                       |

Table 2.1688.2   GPS week: 1688   Day: 2   MJD: 56062.000                            

CENT STA|   DX    DY    DZ    RX    RY    RZ   SCL  RMS  WRMS|    TOFT   TDRFT   SDEV    RMS
        |  [mm]  [mm]  [mm] [uas] [uas] [uas] [ppb] [mm] [mm]|    [ps]  [ps/d]   [ps]   [ps]
--------+----------------------------------------------------+------------------------------
cod  259|    1     0    -3    26    46    33  -.24    9    7 |    -452    -170     18     71
        |                      0   -16                       |
emr   93|    3     0    -5   -83    22   -26   .35   18   18 |    5327     406     18     76
        |                    -23   -53                       |
esa  176|    0     0     1     5    20   -18   .26    8    8 |    1273    2465     14    109
        |                    -25   -27                       |
gfz  194|    0    -1     3   -37   -51    -1  -.24   10    9 |     265     493     26    105
        |                    -18     1                       |
grg  125|    1     0     7   -17   -30    -6   .62   13   12 |    -371     689     44    172
        |                     -7   -16                       |
igr  n/a|    0     0    -2   -76   -10    -8  -.09    4    4 |    4247     154     19     67
        |                    -14    10                       |
jpl  172|   -2     2    -5   -47   -44    55   .46   16   15 |    5920     494     17     83
        |                    -13    18                       |
mit  320|   -1     0     0     3   -74   -34  -.46   11   10 |    -519     835     21    139
        |                    -19    39                       |
ngs  222|   -1     0     0    86    71   -13  -.25   11    8 |    -345    -314   2167   3663
        |                    -51   -32                       |
sio  238|   -2     0    -4    49   384   126  -.37   20   22 |     ---     ---    ---    ---
        |                    -83  -208                       |

Table 2.1688.3   GPS week: 1688   Day: 3   MJD: 56063.000                            

CENT STA|   DX    DY    DZ    RX    RY    RZ   SCL  RMS  WRMS|    TOFT   TDRFT   SDEV    RMS
        |  [mm]  [mm]  [mm] [uas] [uas] [uas] [ppb] [mm] [mm]|    [ps]  [ps/d]   [ps]   [ps]
--------+----------------------------------------------------+------------------------------
cod  259|    0     0    -2    18    53    31  -.22    9    7 |   -1333     909     17     77
        |                     13   -28                       |
emr   93|    5     0    -4   -99    71   -21   .36   17   17 |    5114    -587     19     84
        |                    -17   -74                       |
esa  176|    1     0     0     0    49   -25   .24    8    8 |    -138   -1084     13    113
        |                     -2   -30                       |
gfz  194|    0     0     1   -47  -129     0  -.25    9    9 |     521    -956     29    100
        |                    -26     7                       |
grg  125|    0     2     6    -3   -36    13   .63   14   13 |     -53       4     42    197
        |                    -30   -36                       |
igr  n/a|    0     0    -2   -75     5   -14  -.10    4    4 |    3873   -1190     18     63
        |                      5    -4                       |
jpl  172|   -2     2    -4   -53   -44    52   .46   14   13 |    5900    -916     19     90
        |                     26    16                       |
mit  320|   -1     0     0   -10   -87   -33  -.44    9    9 |    -431     544     23    171
        |                    -23    57                       |
ngs  222|    0    -2     0   118   120    -8  -.21   11    9 |   -1164     600   2114   3580
        |                    -75  -106                       |
sio  238|   -2     0    -4    28   364   133  -.35   19   21 |     ---     ---    ---    ---
        |                    -78  -187                       |

Table 2.1688.4   GPS week: 1688   Day: 4   MJD: 56064.000                            

CENT STA|   DX    DY    DZ    RX    RY    RZ   SCL  RMS  WRMS|    TOFT   TDRFT   SDEV    RMS
        |  [mm]  [mm]  [mm] [uas] [uas] [uas] [ppb] [mm] [mm]|    [ps]  [ps/d]   [ps]   [ps]
--------+----------------------------------------------------+------------------------------
cod  259|    0     0    -2     1    60    22  -.27    9    8 |     255   -1453     20     81
        |                     55   -24                       |
emr   93|    0     1    -4  -111    88   -11   .32   17   17 |    5082   -1794     21    142
        |                    -14  -111                       |
esa  176|    0     0     0    -3    19   -10   .25    9    9 |    1473   -2496     14    129
        |                    -22   -22                       |
gfz  194|    0    -1     2   -17  -157    11  -.17   11   11 |     315    -296     30    119
        |                    -33    47                       |
grg  125|    1     2     3    -6   -31    -9   .58   14   13 |     301    -210     54    191
        |                     -8   -44                       |
igr  n/a|    0     0     0   -67     7   -20  -.12    4    4 |    3397   -2557     17     72
        |                    -17     7                       |
jpl  172|   -2     3    -3   -72   -68    16   .41   15   14 |    5638   -2170     20     84
        |                     30    -1                       |
mit  320|    0    -3     0    19   -76   -38  -.49   12   11 |     163    -405     34    250
        |                    -19    37                       |
ngs  222|    0    -2     1    94   128     0  -.25   11    9 | 1055462 -999999   2144   3886
        |                    -91  -100                       |
sio  238|    0     0    -5    44   364   123  -.36   19   21 |     ---     ---    ---    ---
        |                    -79  -198                       |

Table 2.1688.5   GPS week: 1688   Day: 5   MJD: 56065.000                            

CENT STA|   DX    DY    DZ    RX    RY    RZ   SCL  RMS  WRMS|    TOFT   TDRFT   SDEV    RMS
        |  [mm]  [mm]  [mm] [uas] [uas] [uas] [ppb] [mm] [mm]|    [ps]  [ps/d]   [ps]   [ps]
--------+----------------------------------------------------+------------------------------
cod  259|    0     0    -2    43    52    33  -.27    8    8 |     114   -1735     20     82
        |                     16   -14                       |
emr   93|   -1    -1    -3  -105    32   -45   .32   17   17 |    4240    -811     19    150
        |                      4   -39                       |
esa  176|    0     0     1    38   -12     3   .22    8    8 |     259   -2989     13    139
        |                    -25   -16                       |
gfz  194|    0     0     0  -111   -44   -17  -.22    9    9 |     246    -515     29    109
        |                    -15    34                       |
grg  125|    0     2     3   -19   -23   -11   .57   13   12 |     -11    -232     55    176
        |                    -12   -20                       |
igr  n/a|    0     0    -1   -39     0   -15  -.09    4    4 |    1837   -1245     19     77
        |                     -6    21                       |
jpl  172|    0     1    -3   -31   -41    43   .40   15   14 |    4402    -835     18     74
        |                     55   -21                       |
mit  320|    1    -2     0   -19   -55   -49  -.47   12   11 |     -73    -467     20    139
        |                    -16    37                       |
ngs  222|    0     0     1   113    76    -7  -.22   11    9 |     125   -1774   1828   3652
        |                    -97   -49                       |
sio  238|    0     1    -3    23   394   111  -.40   19   22 |     ---     ---    ---    ---
        |                    -77  -200                       |

Table 2.1688.6   GPS week: 1688   Day: 6   MJD: 56066.000                            

CENT STA|   DX    DY    DZ    RX    RY    RZ   SCL  RMS  WRMS|    TOFT   TDRFT   SDEV    RMS
        |  [mm]  [mm]  [mm] [uas] [uas] [uas] [ppb] [mm] [mm]|    [ps]  [ps/d]   [ps]   [ps]
--------+----------------------------------------------------+------------------------------
cod  259|    0     0     0    25    59    26  -.25    8    7 |    -941     226     21     72
        |                     51   -20                       |
emr   93|    2     0    -2  -113    18     1   .37   17   17 |    4239    -779     22     94
        |                      1   -28                       |
esa  176|   -1     0     0    13     5     0   .18    7    7 |   -1103    -558     17    112
        |                     -6    -2                       |
gfz  194|    0     0     1   -36   -86    -8  -.25   11   11 |    -174    -227     30     96
        |                    -35    35                       |
grg  125|    0     2     5   -15   -30    -3   .62   14   12 |      98    -522     48    176
        |                     -7   -21                       |
igr  n/a|    0     0    -2   -66    -5     8  -.08    4    4 |    1011   -1058     19     76
        |                      3    22                       |
jpl  172|    1     0    -1   -67   -27    -8   .44   15   14 |    3872    -763     18     72
        |                     -2    40                       |
mit  320|    1    -1     1    14   -69   -34  -.47   14   11 |   -1045     726     27    146
        |                    -40    29                       |
ngs  222|    0     0    -4    62    77    -8  -.17   11    9 |    -127    -721   2220   3459
        |                    -33   -69                       |
sio  238|    2     3    -3    59   377   136  -.40   20   20 |     ---     ---    ---    ---
        |                    -90  -208                       |

       
       
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 3.1688.0   GPS week: 1688   Day: 0   MJD: 56060.000                            

        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
------+--------------------------------------------------------+---------------------------------------------------------
   1  |    9   12    8   14   11    4   13   13    9   11    4 |    42   41   45   53   43   42   38   42   46   39    43
   2  |    9   20    8   12   11    4   16   10    8   34    4 |    16   26   18   17   20   14   26   18   15   24    15
   3  |    9   11    7   15    9    3    8   10   11   15    3 |    13   15   16   22   21   13   14   16   15   14    15
   4  |   11   11    7    9   10    5    9   25   10   35    4 |    23   26   31   30   33   23   27   36   27   40    27
   5E |    6   17    6   11   13    4   21   13    8   16    4 |    14   26   21   21   23   17   27   18   17   19    17
   6  |    6   10    6   13    9    3   10   11   11   13    3 |    18   17   21   25   25   17   16   21   16   17    19
   7  |   11   16    9   16   14    6   12    9   14   16    4 |     9   22   14   14   23   10   18   12   14   16    11
   8  |    7   15    7   10   10    5   15   10   10   18    4 |    11   22   15   14   13   11   21   15   16   17    13
   9  |    8   17    6   14    9    6   13   16    7   26    4 |    13   23   16   17   20   16   20   23   18   27    16
  10E |   15   19   14   13   17   11   20   32   25   24    7 |    52   57   57   58   65   54   62   64   62   62    56
  11  |   11   12    9   13   11    5   10   11   10   19    4 |    25   29   31   32   36   25   30   22   25   21    27
  12  |    9   25    7    9   18    4   29   16   10   19    5 |    51   54   47   50   51   47   57   52   48   54    50
  13  |    9   16   10   14   18    5   13   15   10   22    4 |    20   27   20   21   31   17   25   20   20   19    19
  14  |    8   23    8   10   12    4   15   11    5   21    4 |    19   30   23   20   26   17   23   19   18   24    18
  15  |   12   19    9   12   14    5   18   13    8   23    4 |    16   30   20   22   27   20   29   21   23   22    19
  16  |    6   24    7   14   14    4   20   11    7   27    4 |    25   32   29   33   36   27   30   27   28   29    27
  17  |    7   13    7   17   12    8   16   14   11   22    4 |    20   26   22   25   25   21   26   26   24   19    21
  18E |    8   19    9   10   11    6   16   13    5   17    4 |    18   25   20   18   19   16   24   24   18   22    18
  19  |    8   12    8   14   10    3   11   15    8   25    4 |    17   22   21   22   23   19   20   18   17   12    18
  20E |    8   23    6   13   18    6   13   11   10   19    4 |    26   35   25   24   25   25   26   30   29   38    25
  21  |    7   17    6    9   11    5   15   15    9   26    4 |    25   26   18   23   17   23   26   33   28   38    22
  22E |    6   14    6    9   11    5   14   11   10   18    3 |    19   26   22   18   26   20   23   21   21   21    19
  23  |    9   19   11   13   15    5   12   14   10   19    4 |    24   31   24   21   26   20   25   22   25   18    22
 X24  |   11  ---  ---  ---  ---   17   21  ---  ---  ---   15 |    31  ---  ---  ---  ---   30   29  ---  ---  ---    31
  25E |    9   19    6   11   14    5   13   13    7   16    4 |    37   37   35   32   34   35   36   30   35   28    33
  26  |    8   11   10    9   13    3   11   12    8   16    3 |    28   23   21   24   24   24   27   30   22   25    23
  27  |    8   15    6   13   11    5   12   13    8   18    4 |    12   19   13   19   20   12   20   20   15   24    14
  28  |    6   14    7   12   22    6   13   13   11   11    4 |    24   33   27   26   39   26   30   29   30   29    26
  29  |   11   13    8   12   13    4   18   13    7   28    4 |    19   23   21   23   24   20   25   26   21   26    20
  30E |   12   15   11   14   15    7   16   15   22   21    5 |    19   25   23   27   23   19   18   22   30   17    21
  31  |    7   21    7   10   16    3   14   11   11   15    4 |    14   24   15   15   31   12   22   12   11   14    13
  32E |   10   18    5   11   12    6   15   16   18   23    5 |    29   28   26   29   22   30   24   29   42   44    27
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |    9   17    8   12   13    5   15   14   11   21      |T   22   28   24   25   28   22   27   25   25   26    23
 WRMS |    9   17    8   12   13    5   14   13    8   20      |NE  19   25   21   22   25   19   24   22   20   22    20
 MEDI |    8   16    7   12   12    5   14   13   10   19      |MD  19   26   21   23   25   20   25   22   22   24    20

Table 3.1688.1   GPS week: 1688   Day: 1   MJD: 56061.000                            

        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
------+--------------------------------------------------------+---------------------------------------------------------
   1  |   10   15    5   14    9    5   14    9   12   12    4 |    32   25   26   39   28   28   24   30   29   30    28
   2  |    7   20    9   10   11    6   18   10    7   33    4 |    16   27   17   16   21   17   25   14   15   22    15
   3  |    5   15    7   11    9    3   10    9    8   16    3 |    13   15   17   16   19   13   14   15   13   14    13
   4  |    9   11    6    7    8    5    9   17    9   32    3 |    17   19   22   15   23   18   21   21   13   32    16
   5E |    5   20    9   14   15    5   22   11    9   16    4 |    17   30   22   21   28   18   26   18   19   19    19
   6  |    5   14    8   10    9    3    9    8    6   14    3 |    14   14   19   17   18   14   15   17   15   16    15
   7  |    8   18   12   11   16    4   12   12   12   15    4 |    13   24   18   14   27   13   22   18   17   17    16
   8  |    6   15    8    6    8    4   12    7   10   13    3 |    14   22   17   16   19   15   24   18   17   16    16
   9  |    9   19    6    9   16    4   16   15   10   25    4 |    16   24   16   19   21   16   22   22   18   26    16
  10E |   16   17    9   10   19    6   16   26   22   23    6 |    44   50   50   46   56   45   56   50   49   50    47
  11  |   10   13   10   12   11    6   12   11   14   19    4 |    19   24   24   25   30   18   28   17   20   18    21
  12  |   23   24   10   13   23    8   30   21   14   27    7 |    84   82   83   82   83   76   85   80   80   85    81
  13  |    5   16   11    9   17    6   14   18    8   20    4 |    16   27   20   19   30   16   24   20   20   22    18
  14  |    7   24    8    9   13    6   16   14    7   20    4 |    17   29   23   19   25   18   23   20   19   23    17
  15  |    5   19    8    6   14    3   18   14   10   22    4 |    14   28   18   18   24   17   23   20   19   21    16
  16  |    4   22    9   12   18    3   18   10    8   27    4 |    19   24   20   20   30   17   23   17   17   18    19
  17  |    7   15   10   11   10    4   17   14   11   21    4 |    15   22   21   19   21   18   23   20   22   16    16
  18E |    7   20    8    8   13    7   11   13    5   16    3 |    17   25   21   18   21   18   21   19   16   19    17
  19  |    5   14   10   11    8    3   10   15   11   25    4 |    12   20   21   19   20   17   20   14   17   13    15
  20E |    6   27    8   13   18    6   11   12   10   20    4 |    33   44   34   29   40   32   36   37   34   41    33
  21  |    7   18    7    8   11    6   15   11   10   25    4 |    20   24   16   18   11   18   20   27   25   35    17
  22E |    6   15    6    9   14    5   10   11    7   17    3 |    15   26   23   16   23   18   23   15   19   17    18
  23  |    7   21   10   11   13    7   14   16    7   19    4 |    16   30   20   21   26   17   23   20   20   17    19
 X24  |    4  ---  ---  ---  ---   28  ---  ---  ---  ---    0 |    31  ---  ---  ---  ---   31  ---  ---  ---  ---    29
  25E |    6   18    8    9   13    5   11   12    6   11    3 |    21   26   24   19   25   22   26   23   21   20    20
  26  |    6   13    6    5   11    3   11   15    7   18    3 |    21   20   19   19   25   17   21   18   18   16    19
  27  |    5   16    6    8   12    5   12   13   10   16    3 |    12   22   17   15   19   15   19   14   17   14    13
  28  |    6   16    9    6   19    4   12   15    9   13    4 |    26   29   28   26   33   25   29   29   29   26    27
  29  |    8   15    9    8   11    5   17   13    7   30    4 |    12   21   14   12   13   14   21   18   15   16    12
  30E |    9   17   10   12   14    4   16   20   24   23    5 |    15   25   22   21   20   17   19   15   32   17    17
  31  |    8   24    7    9   16    4   14   11    9   15    4 |    16   30   20   17   33   17   25   16   19   17    17
  32E |    9   18    8   13   10    7   13   15   21   23    5 |    33   32   29   29   28   29   29   30   37   39    29
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |    8   18    8   10   14    5   15   14   11   21      |T   21   27   23   22   27   21   26   22   23   24    21
 WRMS |    7   18    8   10   12    5   14   12    8   24      |NE  16   23   19   18   22   17   21   18   18   20    17
 MEDI |    7   17    8   10   13    5   14   13    9   20      |MD  16   25   21   19   25   17   23   19   19   19    17

Table 3.1688.2   GPS week: 1688   Day: 2   MJD: 56062.000                            

        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
------+--------------------------------------------------------+---------------------------------------------------------
   1  |    7   14    4   12    9    2   14    8   10   12    3 |    31   27   24   40   27   28   27   31   32   29    29
   2  |    7   19   10    9    8    4   16    7    9   32    4 |    12   24   13   10   18   10   24   12   10   19    11
   3  |    7   14    7   10   10    3   12    7   11   18    3 |    18   19   17   22   21   15   15   18   15   17    17
   4  |    6   11    7    9    9    5   10   12    8   30    3 |    16   17   22   22   22   16   18   23   16   31    18
   5E |    6   23    8   11   12    4   22   12   11   20    4 |    14   31   19   15   25   15   28   18   17   14    17
   6  |    8   13    7    9    9    3   12    7    9   17    3 |    20   19   18   21   22   17   18   20   16   17    19
   7  |    7   17    8   10   13    5   12   11   11   15    4 |     9   21   13   15   23   12   18   14   17   14    14
   8  |    7   16    6    7   10    3   12    7    6   12    3 |    11   20   16   18   14   13   19   14   16   15    15
   9  |    9   16    7   10   13    4   14   10   10   24    4 |    10   24   22   21   22   18   21   21   24   28    19
  10E |   15   19    8   11   14    7   19   20   21   18    6 |    45   50   50   49   59   46   57   49   54   50    49
  11  |    9   13    8    9   10    4   12    7    9   17    3 |    18   22   21   24   28   17   24   17   18   16    19
  12E |   14   23   10   10   18    6   28   10    9   11    5 |    68   74   72   72   74   67   76   74   66   75    71
  13  |    6   20    9   10   17    3   12   16   13   17    4 |    15   28   18   18   28   14   22   18   20   19    16
  14  |    6   21    7    9   12    5   18   10    5   19    4 |    16   27   20   19   25   17   24   17   16   23    18
  15  |    6   20    6    8   14    3   19   13   10   20    4 |    14   29   16   16   23   13   23   17   19   18    16
  16  |   11   27    6   11   12    3   18    9    8   26    4 |    75   76   75   79   79   74   73   73   73   75    75
  17  |    9   17    8   14   11    3   19    9    7   21    4 |    13   22   19   26   15   16   24   20   19   16    17
  18E |    7   17    9   11   15    5   11   10    6   12    4 |    14   23   19   21   22   15   18   18   17   16    18
  19  |    7   14    9   13    9    3   14    9   13   25    4 |    14   19   19   18   18   12   19   13   14    6    14
  20E |    6   22    6    8   14    4   12   10    8   19    4 |    18   30   21   18   26   19   23   19   20   22    20
  21  |    8   18    9   10   11    5   17   10    8   25    4 |    22   25   16   19   12   19   22   27   22   32    19
  22E |    6   14    7    8   16    4   11   10    6   13    3 |    18   28   25   19   24   20   25   20   19   20    20
  23  |    6   22    9   10   14    4   12   12   12   18    4 |    17   30   22   20   25   17   22   19   20   20    19
 X24  |    7  ---  ---  ---  ---   23   20  ---  ---  ---   12 |    31  ---  ---  ---  ---   29   34  ---  ---  ---    32
  25E |    7   19    6    8   14    4   12   11    7   11    3 |    29   32   25   24   27   24   28   26   28   25    25
  26  |    7   11    9    8   12    4   15   15   10   14    4 |    16   16   15   17   17   14   20   22   18   19    16
  27  |    6   14    8    9   11    4   15    9    7   13    3 |    10   19   15   18   17   11   17   13   15   15    14
  28  |   15   17    7   10   13    5   16   14    6   13    4 |    60   66   65   68   70   67   68   68   68   68    66
  29  |    9   14    8    8   12    5   18   10    8   28    4 |    15   21   20   16   17   18   23   22   19   21    18
  30E |   11   19   10   11   19    6   18   16   26   25    6 |    15   25   17   18   22   13   20   15   29   15    16
  31  |    7   23    8    9   16    4   16   11   12   15    4 |    12   25   16   14   31   11   22   13   17   13    15
  32E |   10   18    8   11   15    4   14   15   22   21    5 |    27   25   24   29   24   26   21   27   36   35    25
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |    9   18    8   10   13    4   16   11   11   20      |T   22   29   24   26   28   22   27   25   25   25    24
 WRMS |    7   18    8    9   12    4   15   10    8   22      |NE  16   22   18   19   21   16   21   18   18   19    17
 MEDI |    7   17    8   10   12    4   14   10    9   18      |MD  16   25   19   19   23   17   22   19   19   19    18

Table 3.1688.3   GPS week: 1688   Day: 3   MJD: 56063.000                            

        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
------+--------------------------------------------------------+---------------------------------------------------------
   1  |    6   12    8    9   12    3   13    8    8   14    3 |    32   29   31   38   35   30   28   33   32   28    31
   2  |    8   19   10    9    9    4   14    6    7   33    3 |    18   27   18   14   19   16   26   17   17   18    17
   3  |    6   11    4    9    9    4    9    8    9   19    3 |    15   16   16   16   21   13   18   14   15   13    15
   4  |    7   13    7    7   13    4    7   10    5   30    3 |    19   22   22   20   25   17   18   21   18   32    20
   5E |    6   20    7   10   10    3   23   11    8   19    4 |    16   26   18   16   27   15   25   16   17   18    17
   6  |    6   11    5   10    9    3    9    8    8   18    3 |    17   18   18   17   24   16   19   18   17   16    18
   7  |    6   18    9    9   12    4   11    9    9   15    3 |    13   24   16   13   24   12   20   17   15   17    15
   8  |    7   16    7    7   13    4   15    8   10   11    3 |    14   22   17   15   15   13   23   14   16   11    15
   9  |    7   15    6   10   12    5   13   11    9   23    3 |    18   23   19   18   20   18   23   19   20   22    19
  10E |   15   20   10   12   16    5   17   14   18   16    5 |    42   52   48   47   51   44   55   45   48   48    46
  11  |    6   11   12    8   12    4   11    8   13   18    4 |    20   26   22   24   31   20   26   19   20   17    21
  12E |   11   22    7    9   24    5   24    9    8   13    5 |    43   50   45   44   50   45   49   44   47   44    45
  13  |    7   18    8   10   18    4   12   12   13   15    4 |    14   26   16   19   28   14   21   20   22   18    17
  14  |    6   20    8   10   11    5   13    9    7   18    3 |    17   27   21   20   25   17   23   18   17   19    19
  15  |    7   18    6    7   16    3   19    8    9   15    4 |    15   26   17   14   23   15   23   17   20   17    16
  16E |    7   20    7   11   12    7   16    9   11   17    4 |    48   52   46   46   48   44   51   46   47   47    47
  17  |    8   15   11   12   10    4   17    9    8   20    4 |    20   23   20   24   21   19   23   22   22   19    19
  18E |    9   18    8    9   18    4    9    8    9   12    4 |    19   28   23   20   25   20   24   21   23   19    21
  19  |    5   14    9    9   12    3   11   10   12   25    3 |    15   19   19   18   23   14   20   16   16   13    17
  20E |    8   19    7    9   19    3   10    8    8   18    4 |    33   39   37   32   39   34   35   38   38   41    35
  21  |    5   14    7    8   11    3   14    8   10   25    3 |    24   26   23   22   15   23   25   28   26   34    23
  22E |    7   13    6    7   16    5    9    8   11   12    3 |    13   24   22   14   25   15   23   13   15   16    16
  23  |    8   21    8   13   13    3   14    7   12   17    4 |    12   27   17   19   21   11   21   15   17   15    15
 X24  |    7  ---  ---  ---  ---   32   12  ---  ---  ---    9 |    42  ---  ---  ---  ---   51   39  ---  ---  ---    39
  25E |    6   14    7   10   13    4   11   11    7   10    3 |    21   24   23   17   24   17   24   18   17   14    18
  26  |    9   13    7    6   13    3   11   10   11   12    3 |    15   16   15   14   18   11   17   16   12   13    14
  27  |    7   16    5    8   16    4   11    7    7   12    3 |    13   21   15   17   17   13   20   15   16   15    15
  28E |   22   15   11    7   14    5   14    7   10   11    5 |    71   70   63   68   73   66   69   68   71   66    67
  29  |   11   17    7    7   10    3   17   10    9   27    4 |    16   23   17   16   14   15   21   19   16   18    15
  30E |   11   19   12   11   12    6   15   14   22   24    5 |    16   23   22   16   18   17   19   15   28   14    17
  31  |    6   20    7   10   15    5   15    8   11   16    4 |    15   25   18   17   31   15   25   15   21   13    17
  32E |   11   18    8   10   16    5   13   12   19   17    5 |    31   32   29   34   29   30   27   33   42   38    31
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |    9   17    8    9   14    4   14    9   11   19      |T   23   28   24   23   27   22   27   23   24   23    23
 WRMS |    7   17    8    9   13    4   13    9    9   21      |NE  18   23   18   18   22   17   22   18   18   18    18
 MEDI |    7   17    7    9   13    4   13    9    9   17      |MD  17   26   20   18   24   17   23   18   20   18    18

Table 3.1688.4   GPS week: 1688   Day: 4   MJD: 56064.000                            

        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
------+--------------------------------------------------------+---------------------------------------------------------
   1  |   10   12    9    9    9    3   13   10    8   14    3 |    32   27   31   34   27   29   28   33   32   28    30
   2  |    7   19    8    9    9    4   17   10    7   33    4 |    19   29   24   20   25   19   29   19   23   23    20
   3  |    6   11    7   12   10    4    8    9   10   22    3 |    23   21   25   22   25   21   20   25   22   24    23
   4  |    8   11    7    7   12    6   11   14   11   32    3 |    15   22   20   22   22   18   21   21   18   32    18
   5E |    7   20    6   12   11    5   23   10   11   20    4 |    18   29   22   20   28   19   29   19   27   21    21
   6  |    6   11    7   11    9    3    8   10   10   21    3 |    23   20   24   23   25   22   19   26   22   24    23
   7  |    7   17    9   10   13    4   15    7    8   15    4 |    14   25   18   16   25   15   23   17   18   17    16
   8  |    7   14    9    8   11    4   13    8   11   10    3 |    13   23   19   19   15   17   21   17   20   16    17
   9  |    8   17    7    8   12    4   13   16    6   23    4 |    14   23   15   16   14   13   19   19   14   20    15
  10E |   14   21    9   13   13    7   17   13   19   15    5 |    36   49   44   44   50   41   51   38   43   41    41
  11  |    8   12    8   13   10    5   10   10   10   20    4 |    21   26   24   27   29   21   28   18   20   18    22
  12E |   15   22    9    8   24    5   27   13    6   12    6 |    24   37   30   25   37   26   36   28   29   29    28
  13  |    7   17   12   12   16    4   16   10    8   16    4 |    14   25   18   21   28   14   22   18   12   18    15
  14  |    8   20   11    9   12    5   14   11   13   17    4 |    19   29   27   19   29   19   23   19   21   21    20
  15  |    9   21    9    7   16    6   21   13    6   14    4 |    17   29   17   20   22   16   25   21   19   20    17
  16E |    6   21   13   12   16    4   17   13    8   21    5 |    29   34   34   29   35   27   29   32   29   35    30
  17  |    7   16    9   14    9    3   17   13    9   21    4 |    18   23   21   26   23   19   24   22   25   18    18
  18E |    8   17   10   10   18    5   11   11   11   12    4 |    25   31   30   24   29   25   28   28   26   28    25
  19  |    6   14    9   11    8    4   12   12    9   25    3 |    14   18   18   20   20   14   19   15   14   10    15
  20E |    9   21    7   11   17    4   12    9    8   19    4 |    32   41   37   36   38   35   36   36   34   37    34
  21  |    9   20    9    9   10    4   13    9   13   26    4 |    26   30   22   22   17   22   25   28   24   35    23
  22E |    8   13    7    7   20    4    9   11    9   14    4 |    20   27   28   19   38   21   26   19   20   19    23
  23  |    6   19    9   13   13    3   15    8   11   19    4 |    15   26   19   21   20   15   21   18   16   21    15
 X24  |    5  ---  ---  ---  ---   25  ---  ---  ---  ---    0 |    37  ---  ---  ---  ---   34  ---  ---  ---  ---    37
  25E |    9   20    8   24   12    3   13   14   13   12    5 |    16   25   23   27   23   17   23   19   21   15    18
  26  |   10   12    7    9   10    3   12   11    9   12    3 |    16   20   15   17   19   13   19   20   19   21    16
  27  |    8   19    7    8   13    5   12   13    6   12    4 |    17   26   16   19   19   15   20   18   16   17    16
  28E |    8   15    9    8   14    3   12   12   10    7    4 |    28   29   29   29   30   27   28   27   34   27    29
  29  |    8   16    7    8   12    4   18   12    8   28    4 |    14   22   14   19   16   14   22   19   19   17    14
  30E |   11   22    9   10   28    8   16   17   23   26    6 |    20   27   17   19   34   16   18   16   28   15    19
  31  |    9   22   10    9   16    3   16    9    8   15    4 |    19   29   22   19   34   17   29   16   18   14    19
  32E |    8   18    9   10   11    6   14   15   20   20    5 |    34   32   30   37   31   32   29   34   40   39    32
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |    9   17    9   11   14    4   15   12   11   19      |T   21   27   23   23   26   21   25   22   23   23    22
 WRMS |    8   17    9   11   13    4   14   11    9   21      |NE  19   24   20   21   22   18   22   20   19   20    19
 MEDI |    8   17    9   10   12    4   13   11    9   19      |MD  19   27   22   21   25   19   24   19   21   21    20

Table 3.1688.5   GPS week: 1688   Day: 5   MJD: 56065.000                            

        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
------+--------------------------------------------------------+---------------------------------------------------------
   1  |    8   13    6    9    8    4   14   11   10   17    3 |    32   29   26   32   26   30   27   32   34   25    29
   2  |    8   17   10    8    8    3   17   10    9   33    4 |    16   23   20   18   23   15   26   16   20   16    18
   3  |    7   12    6   11   11    4    9    8   11   24    3 |    18   17   16   16   14   15   17   18   14   20    16
   4  |   10   12   10    5   11    4   10   20   11   34    4 |    15   19   20   14   20   16   20   24   22   32    18
   5E |    7   21    8   11   15    4   23   12   11   20    5 |    13   31   21   19   31   16   25   18   14   16    17
   6  |    5   12    5    9   11    3    9    8   10   22    3 |    20   18   17   17   17   17   20   20   15   20    18
   7  |    8   20    8    9   14    4   14    7    8   16    4 |    16   26   18   15   23   13   23   18   16   15    17
   8  |    6   18    7    7   12    4   11    6   10   10    3 |    14   24   17   14   14   15   24   14   17   12    17
   9  |    7   15    6    8   11    4   13   19    5   22    4 |    16   24   19   18   19   17   24   26   20   25    20
  10E |   16   17    8   13   16    8   16   16   14   15    5 |    46   55   54   50   58   48   59   45   49   46    50
  11  |    8   13    8   13   10    5   11    9    9   20    3 |    20   28   18   22   27   20   29   15   20   16    19
  12E |   12   21    8    8   13    4   26   19    9   13    5 |    20   29   24   24   29   22   33   30   25   28    24
  13  |    8   16    8   11   17    4   15    9   13   15    4 |    16   27   17   18   28   15   24   17   18   17    17
  14  |    5   23    8   10   12    3   14    9   13   14    4 |    15   26   20   16   25   14   22   15   15   16    16
  15  |    8   21    5    6   14    5   21   14    8   12    4 |    18   29   19   18   27   18   26   21   21   20    19
  16E |    5   18    7   16   19    5   15   10    6   19    4 |    24   27   23   23   28   24   25   26   24   28    23
  17  |    9   16    9   14   10    3   18   11   10   20    4 |    21   22   20   23   17   18   30   23   22   18    20
  18E |    7   15    8    9   14    4   11   10    7   12    3 |    23   26   26   20   25   22   26   26   22   23    23
  19  |    7   15    8   10   13    4   15   11   13   25    4 |    16   19   15   12   18   13   20   15   11    7    14
  20E |   11   21    9    8   15    4   11    8    8   21    4 |    32   40   39   39   37   36   35   39   36   44    35
  21  |    5   15    9    7    9    2   14    8    9   25    3 |    24   21   22   20   13   22   24   25   22   32    22
  22E |    7   13    7    7   14    6   10    9   12   10    3 |    17   26   24   16   29   18   27   19   16   16    20
  23  |    9   20    8   11   13    3   17   10   11   19    4 |    16   29   20   18   22   16   25   20   19   20    18
 X24  |    7  ---  ---  ---  ---   12   17  ---  ---  ---   11 |    33  ---  ---  ---  ---   32   26  ---  ---  ---    31
  25E |    8   16    9    8   14    3   12   15    8   10    4 |    18   20   22   16   22   17   25   23   22   19    19
  26  |    7   11    7    8   10    4   12   11   12   13    3 |    21   22   21   20   23   19   22   20   23   17    21
  27  |    8   14    4    7   13    4   11   12    6   12    3 |    13   20   16   15   18   13   24   17   15   15    16
  28E |    5   14    8    8   11    4   11   11    7   12    3 |    20   26   20   21   22   20   24   24   21   20    20
  29  |    8   16    6    7   10    4   16   14    8   28    4 |    15   19   10   12   14   12   22   18   12   14    13
 X30E |   11   24   11  ---   14    7  ---   20   27  ---    8 |    20   28   18  ---   22   16  ---   19   29  ---    17
  31  |    7   21    8    7   15    5   13   12   19   15    4 |    13   26   18   14   31   14   26   13   20   10    16
  32E |   11   17    8    8   11    5   15   13   21   19    5 |    30   26   23   27   24   28   25   29   38   30    27
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |    8   17    8    9   13    4   15   12   11   19      |T   20   25   21   20   24   19   25   22   21   21    20
 WRMS |    8   17    8    9   12    4   14   11    9   22      |NE  18   23   18   17   20   17   23   19   18   18    18
 MEDI |    8   16    8    8   13    4   14   11   10   17      |MD  18   26   20   18   23   17   25   20   20   19    19

Table 3.1688.6   GPS week: 1688   Day: 6   MJD: 56066.000                            

        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
------+--------------------------------------------------------+---------------------------------------------------------
   1  |   11   11    6   12    9    3   15   10    9   15    4 |    31   32   33   36   36   31   35   35   32   29    32
   2  |    7   15    7   11   10    4   17   13    9   33    4 |    24   32   24   20   28   24   34   24   27   20    24
   3  |    7   13    5   12   14    3    9    8    8   23    3 |    20   21   21   24   27   19   22   20   18   18    20
   4  |   10   11   10    7   10    6    9   21    8   35    4 |    18   25   25   24   27   19   24   31   24   40    23
   5E |    8   19    6   10   13    5   21   13   11   20    4 |    27   34   26   23   36   23   31   21   27   22    26
   6  |    6   12    5    9   13    4    8    9    9   19    3 |    21   23   22   25   29   21   25   23   22   21    22
   7  |    8   17   10    8   17    4   14   10    9   20    4 |    19   29   19   20   26   18   25   21   23   22    19
   8  |    5   15    7    7   12    4   11    7    8   10    3 |    17   26   17   18   17   18   22   18   23   16    18
   9  |    5   16    4   11   10    4   12   18    9   21    4 |    15   25   16   15   17   14   22   17   14   22    15
  10E |   14   18    9   11   17    6   17   40   15   23    7 |    54   60   59   56   64   55   65   69   59   56    58
  11  |    9   11    9   15   10    3   12    8   13   20    4 |    23   32   30   30   39   25   33   22   25   19    26
  12E |   11   23    9   12   19    5   29   19   11   14    6 |    34   45   38   38   42   36   45   42   39   44    37
  13  |    7   19   11   11   20    6   16    9   10   17    4 |    16   30   21   24   30   17   24   21   16   22    18
  14  |    7   21    6   13   12    3   17    9   15   14    4 |    20   30   22   26   30   21   25   21   20   22    20
  15  |    8   20    6   11   15    4   22   14   13   11    5 |    20   28   19   16   26   18   27   17   23   17    19
  16E |    6   19    7   15   16    3   13    9   11   20    4 |    32   38   33   33   36   30   36   34   27   35    30
  17  |    5   16    7   12    8    5   17   12   13   22    4 |    23   25   24   28   24   22   26   29   26   23    23
  18E |    6   17    7   10   12    4   12   10    9   13    3 |    31   37   32   29   29   31   34   33   30   34    30
  19  |    6   14    4   12   10    3   13   12   11   25    3 |    18   23   22   23   26   17   25   19   17   14    19
  20  |    8   21    9    9   14    4   12    7    8   22    4 |    23   33   26   22   29   22   27   24   25   28    25
  21  |    6   13    8    8    9    4   14    8    9   25    3 |    27   27   26   28   20   25   30   28   25   37    25
  22E |    6   11    5   11   14    4    9    8    9    9    3 |    23   31   30   24   33   26   29   23   22   24    25
  23  |    7   19    8   13   16    5   14    9   10   20    4 |    15   27   18   23   24   15   23   20   16   21    16
 X24  |    7  ---  ---  ---  ---   20   14  ---  ---  ---   10 |    33  ---  ---  ---  ---   30   28  ---  ---  ---    31
  25E |    6   22    8    9   12    3   13   16   10    9    4 |    16   26   19   16   20   12   22   17   15   13    13
  26  |    7   12    6   11   13    3   12   10    8   12    3 |    21   21   19   18   23   17   22   18   21   16    19
  27  |    6   15    4   13   14    4   12   13   10   12    4 |    16   22   17   18   19   15   21   17   17   19    16
  28E |    5   15    8   10   16    5   11   12    8   11    3 |    22   28   22   22   25   21   26   26   25   25    22
  29  |    9   17   11    8   12    4   17   13   11   28    4 |    17   23   17   18   20   15   24   20   15   22    15
 X30E |   12   21   12   12   15    7  ---   21   31  ---    7 |    20   28   26   21   24   19  ---   22   34  ---    19
  31  |    7   19    6    9   16    3   15   13   13   15    4 |    19   29   22   22   35   19   30   19   21   16    21
  32E |   11   20    8   11   16    7   15   15   23   16    5 |    41   39   38   41   39   39   36   41   53   43    40
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |    8   17    7   11   14    4   15   14   11   19      |T   23   29   25   25   29   22   28   25   25   25    23
 WRMS |    7   17    7   11   12    4   14   11    9   20      |NE  20   26   21   22   26   20   26   22   21   21    21
 MEDI |    7   17    7   11   13    4   14   12   10   19      |MD  21   28   22   23   27   21   26   22   23   22    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 4.1688   GPS week: 1688   MJD: 56060.0-56066.0

CENT| CLK EPO  |        BRUX       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3062 |U    6     5    13 |U    6     8    23 |U   30    25    48 |
emr | emr 2963 |     7     7    19 |U    9     9    35 |    29    27    53 |
esa | esa 2976 |     5     5    14 |U    6     7    22 |    29    24    48 |
gfz | gfz 2949 |U    5     5    14 |U    7     8    27 |U   29    25    50 |
grg | grg 2976 |U    8     9    24 |U    8     9    30 |    32    29    53 |
igr | igr 2975 |     6     5    15 |     6     8    23 |    29    25    48 |
igs | igs 2973 |     5     5    15 |     7     6    24 |    32    25    54 |
jpl | jpl 3005 |     7     6    17 |U    8     9    29 |    30    25    52 |
mit | mit 2976 |     6     6    17 |U   28    30   126 |U   25    30    48 |



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 5.1688.0   GPS week: 1688   Day: 0   MJD: 56060.0

CENT| CLK EPO  |        BRUX       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3062 |     5     5    11 |     6    11    18 |    63    41   147 |
emr | emr 2964 |     7     5    12 |     9     8    30 |    66    42   151 |
esa | esa 2976 |     5     5    11 |     7     7    17 |    60    39   154 |
gfz | gfz 2963 |     5     5    11 |     7     8    22 |    62    51   159 |
grg | grg 2976 |     7     7    22 |     9     8    27 |    58    46   134 |
igr | igr 2976 |     5     5    12 |     7    10    19 |    60    41   147 |
igs | igs 2970 |     4     4    12 |     6     8    16 |    60    41   146 |
jpl | jpl 3058 |     6     5    17 |     9    11    27 |    67    45   160 |
mit | mit 2976 |     5     5    13 |    10    12    49 |    57    45   135 |

Table 5.1688.1   GPS week: 1688   Day: 1   MJD: 56061.0

CENT| CLK EPO  |        BRUX       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3066 |     5     4    13 |     9     8    32 |    15    14    25 |
emr | emr 2964 |     7     7    20 |     9     6    37 |    17    17    35 |
esa | esa 2976 |     5     5    15 |     8     7    26 |    13    13    25 |
gfz | gfz 2962 |     5     5    15 |     8     8    30 |    13    11    26 |
grg | grg 2976 |     8     9    30 |     9     9    39 |    13    19    29 |
igr | igr 2976 |     5     5    15 |     8     7    27 |    17    12    25 |
igs | igs 2976 |     4     4    15 |     8     5    33 |    13    13    25 |
jpl | jpl 2963 |     5     4    17 |     9     7    41 |    16    13    27 |
mit | mit 2976 |     5     4    17 |    11    13    45 |    14    13    23 |

Table 5.1688.2   GPS week: 1688   Day: 2   MJD: 56062.0

CENT| CLK EPO  |        BRUX       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3067 |     5     8    17 |     5     8    23 |    26    36    60 |
emr | emr 2962 |     6     6    21 |     6    12    29 |    26    27    62 |
esa | esa 2976 |     5     7    14 |     5     8    21 |    25    30    54 |
gfz | gfz 2962 |     5     8    17 |    10     6    39 |    28    33    59 |
grg | grg 2976 |     6     7    25 |     6     8    27 |    24    32    51 |
igr | igr 2976 |     5     7    15 |     5     7    24 |    26    32    58 |
igs | igs 2971 |     5     7    17 |     5     7    21 |    25    31    58 |
jpl | jpl 3060 |     9    11    19 |     8     9    30 |    25    24    57 |
mit | mit 2976 |     5     8    19 |    11    11    58 |    27    34    64 |

Table 5.1688.3   GPS week: 1688   Day: 3   MJD: 56063.0

CENT| CLK EPO  |        BRUX       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3065 |     6     4    13 |     6     8    22 |    45    38    17 |
emr | emr 2964 |     7     5    19 |     9     8    38 |    41    37    27 |
esa | esa 2976 |     6     4    15 |     6     7    22 |    45    35    22 |
gfz | gfz 2963 |     6     4    15 |     6     7    23 |    45    35    21 |
grg | grg 2976 |    10     8    28 |     7     9    30 |    46    39    49 |
igr | igr 2973 |     6     5    18 |     6     8    22 |    45    38    22 |
igs | igs 2974 |     6     4    16 |     6     6    26 |    44    36    25 |
jpl | jpl 3060 |     6     5    19 |     8    13    27 |    45    38    26 |
mit | mit 2976 |     6     4    18 |     9    12    28 |    25    62    19 |

Table 5.1688.4   GPS week: 1688   Day: 4   MJD: 56064.0

CENT| CLK EPO  |        BRUX       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3066 |     5     4    11 |     8     8    23 |     7     9    18 |
emr | emr 2963 |     7     6    19 |    10     9    29 |    11    16    20 |
esa | esa 2976 |     5     4    13 |     8     8    23 |     7     9    19 |
gfz | gfz 2964 |     5     3    13 |     7    10    25 |     8     8    17 |
grg | grg 2976 |     8     9    18 |     8     9    32 |     8    10    27 |
igr | igr 2976 |     6     4    14 |     8     8    23 |     7     9    18 |
igs | igs 2969 |     5     3    13 |     8     6    21 |     8    10    17 |
jpl | jpl 2964 |     6     5    15 |     9     7    34 |     9    10    19 |
mit | mit 2976 |     6     7    18 |   138   138   602 |     8     9    23 |

Table 5.1688.5   GPS week: 1688   Day: 5   MJD: 56065.0

CENT| CLK EPO  |        BRUX       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3056 |     6     5    12 |     5     5    20 |    37    31    37 |
emr | emr 2963 |     8     9    20 |     7     7    36 |    32    37    40 |
esa | esa 2976 |     6     5    14 |     5     5    20 |    40    30    35 |
gfz | gfz 2872 |     5     5    13 |     5     6    22 |    35    28    40 |
grg | grg 2976 |     9     9    26 |     8     9    26 |    50    42    53 |
igr | igr 2976 |     5     4    15 |     4     6    19 |    38    32    42 |
igs | igs 2975 |     5     5    13 |     5     6    23 |    58    33    77 |
jpl | jpl 2968 |     6     5    17 |     5     5    22 |    38    32    46 |
mit | mit 2976 |    10     9    19 |     9    12    49 |    36    32    41 |

Table 5.1688.6   GPS week: 1688   Day: 6   MJD: 56066.0

CENT| CLK EPO  |        BRUX       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3058 |     7     7    16 |     5     8    26 |    16    10    30 |
emr | emr 2964 |     8     9    22 |    11    14    44 |    13    13    32 |
esa | esa 2976 |     6     8    16 |     5     9    22 |    17    10    25 |
gfz | gfz 2963 |     8     8    16 |     5     9    25 |    12     9    29 |
grg | grg 2976 |     6    13    16 |     6    10    29 |    23    13    29 |
igr | igr 2975 |     7     8    16 |     5     9    25 |    13    11    26 |
igs | igs 2976 |     7     8    17 |     9     7    24 |    14    11    28 |
jpl | jpl 2968 |     8     7    20 |     6     9    25 |    12    11    31 |
mit | mit 2976 |     6     9    15 |    11    16    52 |    11    13    31 |


Table 6: Earth Orientation Parameters weekly summary.                          
                                                                              
        Weekly mean and standard deviation of Centre ERP, ERP rates and       
        LOD differences with respect to IGS combined values. See Table 7 for  
        the daily summaries.                                                  
                                                                              
        Xpole,Xrt: x pole and x pole rate                          
        Ypole,Yrt: y pole and y pole rate                       
        LOD      : Length Of Day                                               
                                                                              
        AC LOD BIAS    : 10-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 6.1688   GPS week: 1688   MJD: 56060.500-56066.500

                                                         AC LOD  AC LOD
CENT  FLAG  |   Xpole   Ypole     Xrt     Yrt    LOD |    BIAS  BIAS RMS
            |   [uas]   [uas]   [uas/d] [uas/d]  [us]|    [us]    [us]
------------+----------------------------------------+------------------
cod   xxxxx |       2     -49      33     -82      4 |       0     20
            |      12      21      65      89      7 |       2
emr   uuuuu |      61     -10      39     202      6 |      24     33
            |      30      10      80      77      6 |       2
esa   uuuuu |      11      -6     -45     204      2 |       4     19
            |      10       8      73      31      6 |       2
gfz   uuuuu |     -36       6      -8    -107      2 |       4     22
            |      19      12      70      60      4 |       4
grg   uuuux |      10     -10      65    -226     35 |     -17     34
            |      10      12      81      57     13 |       5
igr   xxxxx |     -19     -12      35     -53      2 |      -1     19
            |       9      12      74      40      3 |       3
irf   xxxxx |     -10     -21       7     -56     -1 |       2     20
            |       8       5      25      26      2 |       3
jpl   uuuuu |     -14     -36      84      -6     -2 |       9     23
            |      25      25      52      51      5 |       4
mit   uuuuu |     -47       6     -43    -233     -6 |      16     26
            |      18      15      47      75      3 |       4
ngs   uuuuu |      35      37     -10      64     -1 |      10     20
            |      47      28     144      73      4 |       3
sio   xxxxx |     188      66     -91    -149      0 |      44     48
            |      14      15      33      96      6 |       3


Table 7.1688.0   GPS week: 1688   Day: 0   MJD: 56060.500

                                                         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 |     -19     -43      38     -84     17 |       1     17
emr   uuuuu |     107       3     -29     125     -1 |      23     31
esa   uuuuu |      17      -5      43     214      7 |       6     17
gfz   uuuuu |     -22       0      30    -171      2 |       9     19
grg   uuuux |      -7       0      96    -198     26 |     -25     41
igr   xxxxx |     -13     -14      96    -111      4 |       2     16
irf   xxxxx |      -4     -11      33     -81      1 |       5     17
jpl   uuuuu |     -10     -34      87     -68     -8 |      14     22
mit   uuuuu |     -19      33     -55    -288     -2 |      20     26
ngs   uuuuu |     -39       7    -157     128     -3 |      13     19
sio   xxxxx |     194      96    -109    -168     11 |      46     49

Table 7.1688.1   GPS week: 1688   Day: 1   MJD: 56061.500

                                                         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 |      -8     -55      38     -12      7 |       2     18
emr   uuuuu |      73     -15     -72     235     -3 |      24     32
esa   uuuuu |      26      -8      60     214      9 |       7     17
gfz   uuuuu |     -42      28       1    -120     -6 |       9     19
grg   uuuux |       4     -26     143    -196     53 |     -21     39
igr   xxxxx |      -4      12     152     -30      4 |       2     16
irf   xxxxx |      -5     -26      38     -84      0 |       6     17
jpl   uuuuu |      24     -12      35      21     -5 |      13     21
mit   uuuuu |     -51       4     -35    -318     -2 |      20     26
ngs   uuuuu |     -13      15    -153      63      2 |      14     20
sio   xxxxx |     179      69    -101    -335      2 |      47     50

Table 7.1688.2   GPS week: 1688   Day: 2   MJD: 56062.500

                                                         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     -23      93    -227      6 |       0     21
emr   uuuuu |      44       0      58     137      8 |      23     32
esa   uuuuu |      18       2     -96     228      3 |       4     20
gfz   uuuuu |     -10      -5      40     -49      5 |       5     24
grg   uuuux |       7     -16     163    -333     22 |     -15     32
igr   xxxxx |     -19      -9      78     -42      8 |      -1     20
irf   xxxxx |      -9     -23     -11     -42     -2 |       3     21
jpl   uuuuu |     -27     -10     129      66      3 |      10     24
mit   uuuuu |     -48      -4    -110    -198    -10 |      18     27
ngs   uuuuu |      23      28     -25      45     -8 |      12     21
sio   xxxxx |     199      60    -124    -129     -4 |      45     49

Table 7.1688.3   GPS week: 1688   Day: 3   MJD: 56063.500

                                                         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 |       9     -34      54     -19      4 |       2     21
emr   uuuuu |      55      -4      72     240      7 |      26     35
esa   uuuuu |      11     -19     -56     230      2 |       6     20
gfz   uuuuu |     -26       5      84    -177      2 |       5     24
grg   uuuux |      17       9     -65    -271     54 |     -16     32
igr   xxxxx |     -15     -26      -1    -104      1 |       0     21
irf   xxxxx |     -19     -21       6     -39     -2 |       4     21
jpl   uuuuu |     -35     -47      84      -5     -8 |      10     24
mit   uuuuu |     -76       2      19     -97     -8 |      19     28
ngs   uuuuu |      87      54     -92      35      5 |      11     21
sio   xxxxx |     168      57     -43     -33     -2 |      46     50

Table 7.1688.4   GPS week: 1688   Day: 4   MJD: 56064.500

                                                         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     -82     -20    -167      2 |       0     23
emr   uuuuu |      88     -13      16     280      7 |      24     34
esa   uuuuu |      -1      -5     -42     201     -2 |       3     22
gfz   uuuuu |     -70       6     -14    -141      5 |       2     25
grg   uuuux |      21     -19      -4    -164     25 |     -15     32
igr   xxxxx |     -30     -10     -39     -43      1 |      -3     23
irf   xxxxx |     -23     -27      17     -85     -3 |       0     23
jpl   uuuuu |     -22     -57     125     -28      2 |       5     24
mit   uuuuu |     -60      -8     -18    -285     -9 |      14     28
ngs   uuuuu |      77      64     -10     119     -1 |       8     21
sio   xxxxx |     175      52     -57    -177     -4 |      42     48

Table 7.1688.5   GPS week: 1688   Day: 5   MJD: 56065.500

                                                         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 |       6     -36     110     -90     -4 |      -4     21
emr   uuuuu |      31     -24      49     291     12 |      21     31
esa   uuuuu |       8       5     -85     204      4 |       0     20
gfz   uuuuu |     -42      -5     -88     -58     -1 |      -2     22
grg   uuuux |      12      -8      37    -217     31 |     -16     31
igr   xxxxx |     -29     -14     -27       0     -1 |      -7     21
irf   xxxxx |      -8     -20      -4     -19      0 |      -4     21
jpl   uuuuu |      13     -75      -6      40     -2 |       2     23
mit   uuuuu |     -45      -4      -5    -208     -7 |      10     23
ngs   uuuuu |      41      77     196     -74     -1 |       4     17
sio   xxxxx |     192      57     -76    -119     -4 |      38     43

Table 7.1688.6   GPS week: 1688   Day: 6   MJD: 56066.500

                                                         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 |      18     -69     -80      21     -5 |       1     18
emr   uuuuu |      26     -19     178     107     14 |      27     35
esa   uuuuu |       0     -12    -140     139     -8 |       5     19
gfz   uuuuu |     -37      17    -112     -33      7 |       3     20
grg   uuuux |      19     -11      83    -201     32 |     -10     32
igr   xxxxx |     -24     -21     -16     -39     -1 |      -2     18
irf   xxxxx |      -2     -18     -33     -45     -3 |       1     19
jpl   uuuuu |     -42     -16     131     -66      3 |       7     22
mit   uuuuu |     -31      22     -94    -236     -4 |      13     24
ngs   uuuuu |      67      15     174     131     -2 |       7     18
sio   xxxxx |     206      72    -129     -84     -1 |      42     46



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