[IGSREPORT-21041] Wk 1697 IGS Final Orbits

IGS ACC igs.acc at noaa.gov
Thu Aug 2 07:54:44 PDT 2012


Author:  AC Coordinator / NOAA NGS

sum-file Version 2.0
Final IGS Orbit Combination - Week 1697   (Jul 15, 2012 - Jul 21, 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:

igs1697[0-6].sp3  IGS GPS ephemeris files in SP3 format.
igs1697[0-6].clk  IGS GPS satellite and station clocks in clock RINEX format.
igs1697[0-6].cls  IGS GPS clock combination summary report.
igs16977.erp      Earth Rotation Parameters (ERP) and their rates as well as
                  Universal Time (UT1-UTC) and Length Of Day (LOD) associated 
                  with IGS ephemerides.
igs16977.sum      Complete report.

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

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

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

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

 4. The following clock solutions were excluded from the combination because they
    were biasing the combined clock solutions (clock shifts/outliers) but were
    kept for the RMS computation.  Duplicate entries can arise due to separate
    combination runs for the 30-s clocks ACs (listed first) and the 5-min clock
    ACs (listed second).
    
               Day | Centre | PRN/STA list
               ----+--------+---------------
                0  |  COD   | KOUC TLSE
                0  |  EMR   | 3 CHUR WHIT CHUR QAQ1 SCH2 TLSE WHIT
                0  |  ESA   | BRMU NICO NNOR
                0  |  GFZ   | 3 6
                0  |  GRG   | MAC1 SANT
                0  |  MIT   | 3 6 13 26 3 6 13 26 TLSE SANT TLSE TWTF
                1  |  COD   | ABPO KOUC MAC1
                1  |  EMR   | 3 3 6 26
                1  |  ESA   | IRKJ MAW1 SCH2
                1  |  GFZ   | 3 6 30 MAW1
                1  |  GRG   | MAC1 SCH2 DUBO IRKJ KUNM
                1  |  JPL   | 3 6 DUBO
                1  |  MIT   | 3 26 3 6 26 GMAS SYOG
                2  |  COD   | HARB KOUC MAC1 MAW1 WHIT
                2  |  EMR   | 3 3 SCH2 SCH2 WHIT
                2  |  ESA   | MAW1 IRKJ NNOR SANT
                2  |  GFZ   | BRAZ METS
                2  |  GRG   | IRKJ MAC1 SANT
                2  |  JPL   | SCH2 WHIT
                2  |  MIT   | SCH2
                3  |  COD   | KOUC KOUC
                3  |  EMR   | YAKT
                3  |  ESA   | IRKJ NNOR
                3  |  GFZ   | 3 6 NTUS PIE1 REUN
                3  |  GRG   | IRKJ
                3  |  JPL   | 3 6
                3  |  MIT   | 19 3 6 19
                4  |  COD   | KOUC KOUC
                4  |  EMR   | 3 6 MCM4
                4  |  ESA   | DAV1 DAV1 IRKJ NNOR
                4  |  GFZ   | 3 6 23 ABPO BRFT CHAN DGAR METS RESO
                4  |  GRG   | IRKJ IRKJ
                4  |  JPL   | 3 6
                4  |  MIT   | 3 6 3 6 DAV1
                5  |  COD   | 6 KOUC FLRS KOUC
                5  |  EMR   | 3 3 6 SCH2
                5  |  ESA   | 6 NNOR SCH2 TIXI
                5  |  GFZ   | 3 6 23 BOGT BRFT KARR OHI2 ZECK
                5  |  JPL   | 1 3 6
                5  |  MIT   | 3 3 6 OPMT
                6  |  COD   | KOUC KOUC
                6  |  EMR   | 3 6 3 6
                6  |  ESA   | REUN IRKJ NNOR
                6  |  GFZ   | 3 6 19 23 BRFT KERG MAG0 OHI2 PDEL
                6  |  GRG   | IRKJ
                6  |  JPL   | 3 6 19
                6  |  MIT   | 3 19 3 6 19 METS METS TSKB

    
 5. New clock offsets and drifts were estimated for centres showing reference
    clock resets.  Note that only the largest clock offset and drift are output
    to the summary file.  However, the clock combination and the listed RMS
    include all the clock segments.  In summary, the following clock
    shifts/resets were noticed and accounted for:
    
               Day | Centre |  Time  |  Jump
               ----+--------+--------+-------------
                4  |  EMR   | ~06:45 | ~ 0.16 ns

 6. Velocity changes were estimated to alleviate the effects of modeling
    problems, experienced by all centres,in the Long Arc (LA) process.
    
             Velocity changes per day and affected satellites:
    
               Day |  0 |  1 |  2 |  3 |  4 |  5 |  6 |
           --------+----+----+----+----+----+----+----+
           PRN G26 |    |    |    |    |    |    |  1 |

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

 8. Small rotations were applied to all the AC orbit and ERP values in order
    to align them to the 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  |     .8     .3     .6     -52    -18     10    -.36
       EMR  |    -.8   -3.8   18.4      -7     -4    -13    -.09
       ESA  |     .2   -3.5   14.8     -67     28     79    -.12
       GFZ  |   -1.0     .3     .3     -43      7    -20    -.28
       GRG  |   -2.5   -3.1   28.6     -44     42    -21    -.33
       JPL  |   -2.9    1.4   15.1       4      0     -9    -.37
       MIT  |    3.1   -2.2   27.8     -13     15    -44    -.32
       NGS  |     .0    1.6   27.0     -88     24     -7    -.11
       SIO  |   -2.0   -5.1    1.4     -81      8     53    -.18


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

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

11. Starting 5-Nov-2006 (GPS Week 1400, day 0, MJD 54044) until 16-Apr-2011
    (GPS Week 1631, day 6, MJD 55667) the absolute antenna model is introduced
    (IGSMAIL #5438). The antenna phase center offsets and phase center
    variations are given in the file:
        ftp://igs.org/igscb/station/general/igs05.atx
    These antenna calibrations are also used in the homogeneously reprocessed
    IGS products from GPS Weeks 730 to 1459 (1994-2007); see IGSMAIL #6136.
    Starting 17-Apr-2011 (GPS Week 1632, day 0, MJD 55668) the absolute antenna
    model is updated (IGSMAIL #6255 & #6374) as given in the file:
        ftp://igs.org/igscb/station/general/igs08.atx
    The JPL solution 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 1.1697.a). It also displays the computed satellite
position sigmas for the combined orbits (table 1.1697.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 2.1697.[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 3.1697.[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 5.1697.0-6).

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 1697 summary.                       (Jul 15, 2012 - Jul 21, 2012)

Table 1.1697.a   GPS week: 1697   MJD: 56123.000-56129.000

         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  261|   -1     0    -6    16    43    19  -.28    9    9 |    -954     636     15     76
        |    0     0     0     9    10    22   .03           |     689    1357
emr   91|    1    -4     0   -59    70   -27   .41   15   15 |    2447    -532     35    142
        |    1     1     1    14    14    11   .02           |    1207     611
esa  174|    1     0     0     2   -20    14   .23    7    7 |    -160   -1025     14    121
        |    0     0     0    19    17    12   .03           |     450    1005
gfz  195|    0     0     0   -20   -11   -21  -.34   11   10 |      -7      78     34    128
        |    0     1     1    20    25    16   .04           |     610     738
grg  127|    0     1     9    -7   -38     8   .60   15   14 |     -46      -1     57    202
        |    0     0     1    11    11    18   .04           |     296     531
igr  n/a|    0     0    -1   -61    13   -25  -.07    5    4 |   20021    -561     20     69
        |    0     0     1     5    18    15   .02           |     989     868
jpl  160|    0     1    -4   -81    31    21   .47   14   13 |    4295    -540     21    107
        |    1     1     1    10     6    22   .02           |     967     712
mit  258|    0     0     0   -66   -30   -34  -.38   11   10 |    -318     353     26    186
        |    1     0     0    32    21    20   .04           |     253     629
ngs  260|    0     0     6   125   -27   -13  -.17   10    8 |    -889     534   2104   3931
        |    1     0     1    11    20    16   .03           |     692    1304
sio  240|   -2     1    -4    87    -2    41  -.27   18   17 |     ---     ---    ---    ---
        |    1     0     1    31    20    15   .03           |     ---     ---


Table 1.1697.b   GPS week : 1697   MJD: 56123.000-56129.000   

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



Table 2: Daily transformation of each centre to the combined IGS orbit and
         clocks for each day of the week. The transformation displayed is the
         sum of a priori and estimated transformations.
         WRMS - RMS weighted by the centres SP3 header accuracy codes.
         STA  - Number of stations in the daily solutions.
   
Table 2.1697.0   GPS week: 1697   Day: 0   MJD: 56123.000                            

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  261|   -1     0    -5    25    43    17  -.27   10    9 |    -733     807     17     84
        |                     23   -24                       |
emr   91|    2    -3     2   -37    71   -40   .41   15   15 |    4520   -1006     38    144
        |                    -36   -77                       |
esa  174|    1     0     0     0     6    11   .21    7    7 |      -3    -221     11    126
        |                     47     0                       |
gfz  195|    0     1     0   -45   -40   -40  -.31   12   10 |    1059    -216     34    126
        |                    -41   -11                       |
grg  127|    0     2     9    -5   -35    -4   .57   14   13 |      50     -40     57    223
        |                     -1   -55                       |
igr  n/a|    0     0    -1   -55    11   -27  -.10    5    5 |   21087      40     19     81
        |                      1    18                       |
jpl  160|   -1     1    -4   -82    19     1   .48   14   13 |    5993    -634     22    104
        |                    -25    -7                       |
mit  258|    2     0     0   -71   -59     7  -.45   14   11 |    -188     600     26    211
        |                     24    17                       |
ngs  260|   -1     0     2   142     3   -19  -.21   12    9 |    -462     210   2118   4315
        |                    -73   -43                       |
sio  240|    0     0    -5    84   -26    69  -.34   20   18 |     ---     ---    ---    ---
        |                    -92    -8                       |

Table 2.1697.1   GPS week: 1697   Day: 1   MJD: 56124.000                            

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  261|   -1     0    -7    18    41     8  -.25   10    9 |   -2464    3302     14     77
        |                     43   -11                       |
emr   91|    2    -3     1   -68    67   -27   .38   15   15 |    2932     -56     34    150
        |                      1   -62                       |
esa  174|    0     0     0   -23   -26    22   .21    6    6 |     471   -2279     15    126
        |                     58    25                       |
gfz  195|    0    -1     0     1    -4   -24  -.36   11   10 |     -53     672     32    104
        |                    -31    22                       |
grg  127|    0     1     8     4   -37    -2   .58   15   14 |    -520     547     59    198
        |                      7   -15                       |
igr  n/a|    0     0     0   -70    15     1  -.07    4    4 |   20534     239     23     62
        |                      2    10                       |
jpl  160|    0     0    -2   -85    33    66   .49   14   14 |    4707     -39     20    102
        |                     44   -37                       |
mit  258|    0     0     1   -24   -22   -38  -.39   11   10 |    -726    1124     26    177
        |                      8    -8                       |
ngs  260|    0     0     7   113   -40   -18  -.18   11    8 |   -2411    3274   1950   4042
        |                    -71    -3                       |
sio  240|   -2     2    -4   118    11    36  -.29   18   17 |     ---     ---    ---    ---
        |                   -104   -34                       |

Table 2.1697.2   GPS week: 1697   Day: 2   MJD: 56125.000                            

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  261|    0     0    -6    22    38    62  -.24    9    8 |   -1006     113     18     68
        |                     19   -21                       |
emr   91|    2    -2     0   -66    58   -41   .41   16   16 |    2811    -271     40    150
        |                    -30   -66                       |
esa  174|    1     0     1   -19   -43    -7   .23    8    8 |    -828     411     21    140
        |                     82    37                       |
gfz  195|    0     0     0    -9    25   -34  -.30   11   11 |      -1     -55     36    113
        |                    -15    16                       |
grg  127|    0     1     6    -3   -41     9   .58   16   16 |    -101     107     61    193
        |                     -3    -7                       |
igr  n/a|    0     0     0   -60    12   -32  -.04    5    5 |   20778    -411     25     89
        |                     -9    -2                       |
jpl  160|    2     0    -2   -77    36     2   .49   13   13 |    4624    -454     27    104
        |                     20   -37                       |
mit  258|   -2     1     0   -37   -18   -40  -.38   10    9 |    -416     518     36    185
        |                      4   -23                       |
ngs  260|   -1    -1     5   121   -51    20  -.17   11    9 |    -929    -120   2094   3758
        |                    -86    13                       |
sio  240|   -3     2    -3   103     9    28  -.25   17   17 |     ---     ---    ---    ---
        |                   -108   -51                       |

Table 2.1697.3   GPS week: 1697   Day: 3   MJD: 56126.000                            

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  261|    0     1    -6    22    59    -4  -.28    9    8 |    -545    -122     17     69
        |                     28   -19                       |
emr   91|    3    -4     0   -63    90   -26   .41   15   15 |    2557     189     36    135
        |                     -8   -64                       |
esa  174|    0     0     0     8   -32    25   .23    6    6 |     158   -1539     13    111
        |                     36    20                       |
gfz  195|    0    -1     0   -26    -6   -25  -.37   11   10 |    -217     202     35    107
        |                    -33    -6                       |
grg  127|    0     1     9    -5   -30    31   .57   15   14 |       6      92     58    181
        |                     -4   -24                       |
igr  n/a|    0     0     0   -62    34   -32  -.07    5    4 |   20442      51     21     57
        |                     -1     8                       |
jpl  160|    0     1    -3   -66    39    32   .47   14   13 |    4318     209     21    110
        |                     42   -12                       |
mit  258|   -2     0     1   -81   -37   -41  -.39    9    9 |     -93     122     20    173
        |                     34    -5                       |
ngs  260|    0     0     7   123   -41   -16  -.12   10    8 |    -692      77   1979   3781
        |                    -56    72                       |
sio  240|   -3     0    -3    79     0    48  -.26   16   17 |     ---     ---    ---    ---
        |                   -101   -36                       |

Table 2.1697.4   GPS week: 1697   Day: 4   MJD: 56127.000                            

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  261|   -1     0    -8     3    56    34  -.33   10    9 |    -715    1109     13     68
        |                     73   -38                       |
emr   91|    1    -6    -1   -67    87   -15   .40   15   15 |    2237    -509     31    127
        |                      3   -58                       |
esa  174|    0     0     0    14    -2     3   .19    6    6 |    -192   -1319     11    120
        |                     39    16                       |
gfz  195|    1     0     1   -36   -51   -28  -.40   11   10 |    -383     133     36    159
        |                    -30    -5                       |
grg  127|    0     1    10   -31   -23    36   .66   14   13 |    -162     435     58    186
        |                     22   -42                       |
igr  n/a|    0     0    -1   -64    30   -37  -.10    4    4 |   19997    -657     20     65
        |                     10    -5                       |
jpl  160|    0     2    -3  -100    36    15   .47   14   14 |    4006    -342     20    112
        |                     48   -22                       |
mit  258|   -1     0     0   -44   -56   -47  -.37   10   10 |    -319     747     25    196
        |                     15   -11                       |
ngs  260|    0     0     6   113    -6   -31  -.13   10    7 |    -564     821   2340   4279
        |                    -72     1                       |
sio  240|   -2     1    -4   117   -36    44  -.27   17   17 |     ---     ---    ---    ---
        |                   -111   -33                       |

Table 2.1697.5   GPS week: 1697   Day: 5   MJD: 56128.000                            

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  261|   -1     1    -5     3    34     4  -.32    9    9 |    -775     257     16    103
        |                     20    14                       |
emr   91|    0    -4    -2   -40    72   -28   .43   16   16 |     872    -450     33    141
        |                    -40   -67                       |
esa  174|    0     0     0     4   -24    26   .24    6    6 |     -76   -1958     13    115
        |                     25    11                       |
gfz  195|    1    -1    -1   -35     0     1  -.34   11   10 |    -867    1077     36    141
        |                    -25    14                       |
grg  127|    0     0    11     0   -59    -6   .65   15   13 |     -74     -61     57    248
        |                    -24    -6                       |
igr  n/a|    0     0    -4   -52   -24   -38  -.07    5    5 |   18714    -894     19     66
        |                     -6    43                       |
jpl  160|    2     2    -6   -83    29    19   .42   15   14 |    3106    -510     22    110
        |                     -2    19                       |
mit  258|   -1    -1     0   -86   -10   -52  -.35   11    9 |    -501     226     24    183
        |                     39   -14                       |
ngs  260|    1     0     8   138   -24   -12  -.16    9    7 |    -731     294   2123   3450
        |                    -76    -6                       |
sio  240|   -2     1    -5    78    16    22  -.27   19   19 |     ---     ---    ---    ---
        |                    -83   -41                       |

Table 2.1697.6   GPS week: 1697   Day: 6   MJD: 56129.000                            

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  261|   -1     1    -6    16    34    12  -.27    9    8 |    -441   -1010     13     64
        |                      9   -16                       |
emr   91|    0    -5    -1   -72    48   -10   .41   15   15 |    1202   -1627     34    149
        |                     -8   -26                       |
esa  174|    1     0     0    32   -18    16   .28    9    9 |    -651    -276     14    114
        |                     -9    24                       |
gfz  195|    0     0     1     8    -5     2  -.30   11   11 |     411   -1262     35    147
        |                    -38    11                       |
grg  127|    0     0    11   -13   -42    -5   .61   16   15 |     477   -1087     53    188
        |                    -16    -5                       |
igr  n/a|    0     1    -3   -62    11   -10  -.06    4    4 |   18600   -2296     19     67
        |                      2    -8                       |
jpl  160|    0     0    -5   -73    28     9   .47   14   13 |    3316   -2015     19    107
        |                    -50    20                       |
mit  258|    0     0     1  -118    -6   -27  -.31   11   10 |      11    -860     25    180
        |                     40   -29                       |
ngs  260|   -1     1     5   125   -33   -18  -.20    9    8 |    -438    -814   2126   3894
        |                    -52    21                       |
sio  240|    0     0    -6    27     8    42  -.24   19   16 |     ---     ---    ---    ---
        |                    -65   -39                       |

       
       
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 3.1697.0   GPS week: 1697   Day: 0   MJD: 56123.000                            

        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   17    6    8   13    4   12   13    9   12    3 |    57   70   65   60   74   60   76   58   61   55    63
   2  |    6   13    9   15   13    5   15    4   12   30    4 |    26   29   24   26   30   24   33   23   26   34    24
   3E |   10   18    5   12   16    7   16   15   21   16    5 |    19   25   19   22   20   19   26   23   33   13    20
   4  |    6    9    5   11   13    4   10   10   12   33    4 |    24   24   25   30   30   25   25   29   31   35    25
   5  |   14   18   10   15   12    6   16   14    8   26    5 |    17   25   24   21   21   19   24   24   19   26    19
   6E |   13   16    5   15   19    8   15   15   20   16    5 |    25   37   32   30   36   31   36   30   38   26    30
   7  |   11   15    7   13   13    4   13   11    9   15    4 |    33   38   35   32   41   33   39   33   36   30    34
   8  |    6   12    6    9   13    6    9   10    6   17    3 |    19   23   20   21   17   18   21   17   22   19    19
   9  |    9   11    6   10   12    5   10    9   10   27    3 |    22   25   23   23   24   21   22   19   21   29    22
  10  |    8   11    6   12   13    5   11    7   11   22    3 |    30   39   35   39   45   35   40   36   40   30    36
  11  |    9   12    7    7   17    5   11   16   13   15    4 |    31   41   33   34   50   33   44   33   38   32    35
  12  |   10   24   10   18   19    5   22   10    9   18    5 |    29   38   33   32   39   29   35   24   28   28    28
  13E |   10   11    7   11   14    3   11   12    9   20    3 |    16   22   17   17   26   16   23   23   22   26    19
  14E |    6   12    5    8   13    5    9    8   11   17    3 |    21   28   25   19   27   20   23   21   21   20    22
  15  |   12   25    7   14   15    4   23    8   12   16    5 |    32   35   31   27   35   27   32   30   25   22    28
  16  |    9   15    8   13   14    4   13   13   11   23    4 |    22   29   26   22   28   23   29   25   27   19    23
  17E |    7   13    5   12   19    5   17    9   10   13    4 |    36   37   35   35   35   35   36   34   35   36    36
  18  |    7   15    5   13   11    6   15   10    9   23    4 |    18   31   21   17   26   17   30   18   18   17    18
  19E |   11   15    6   10   17    5    9   20    7   18    4 |    46   48   47   42   46   44   47   42   44   40    44
  20  |    7   11    5   11   10    4   12    8    9   24    3 |    28   29   29   28   32   27   30   29   30   26    29
  21  |    7   14    4   10   12    5   16   11    9   20    3 |    41   49   46   40   49   41   51   36   39   38    42
  22  |    6   12    5    8   11    4   10    9    9   19    3 |    12   23   16   14   25   14   20   16   14   13    14
  23E |    8   11    6   15   16    4   11    8   11   32    4 |    48   46   51   48   49   48   48   49   52   44    49
  25  |    7   21    7    9   14    4   14   17    7   10    4 |    19   24   27   24   35   22   33   19   21   19    22
  26E |   26   21   10   14   18   11   16   46   24   23    8 |   106  110  108  108  110  103  109  108  108  108   107
  27  |    9   12    6    9   13    5   11    9    9   24    3 |    27   29   26   25   29   25   27   24   25   27    26
  28  |    6   14    5   11   16    6    9   11   10   20    3 |    15   24   20   16   30   13   21   14   21   13    17
  29E |   15   18   10   12   15    5   24   16    8   14    5 |    27   31   28   32   34   27   34   26   31   22    28
  30  |    8    9    8    8   12    5    9   12   11   17    3 |    20   21   21   22   19   19   21   15   22   17    19
  31  |   11   16    8   11   16    6   14   13   15   14    4 |    26   35   28   26   34   26   32   24   26   24    26
  32  |    5   13    5    8   13    3    8   10   10   13    3 |    23   28   26   24   32   25   28   26   29   27    27
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |   10   15    7   12   14    5   14   14   12   20      |T   29   35   32   30   36   29   35   29   32   29    30
 WRMS |    9   15    7   10   13    5   13   11    9   18      |NE  24   30   27   25   31   24   30   24   26   24    25
 MEDI |    8   14    6   11   13    5   12   11   10   18      |MD  26   29   27   26   32   25   32   25   28   26    26

Table 3.1697.1   GPS week: 1697   Day: 1   MJD: 56124.000                            

        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   14    6   15   12    4   13   11    9   12    3 |    55   65   64   53   70   60   77   54   56   53    60
   2  |    6   13    7   12   10    3   16    6    9   28    4 |    23   29   28   25   29   25   34   24   24   33    25
   3E |   10   18    6   12   13    4   17    9   21   14    4 |    19   30   21   19   24   19   28   22   30   20    20
   4  |    7    8    5    9   12    3   13    8    9   31    3 |    22   27   26   25   27   27   28   28   29   37    25
   5  |   12   16    8   12   16    4   16   10    8   24    4 |    20   27   23   26   24   25   27   25   24   23    21
   6E |   13   18    5   13   13    4   17   12   20   15    5 |    30   44   35   33   41   33   43   31   40   33    34
   7  |    9   17    6   10   15    4   13    9   10   13    3 |    32   43   37   36   42   37   40   36   38   34    36
   8  |    7   11    4    8   15    4    9    8    9   15    3 |    20   28   22   22   22   23   29   23   22   23    22
   9  |   10   15    8    8   12    4   11   10   11   25    4 |    26   31   27   28   27   28   31   30   29   38    27
  10  |    8    9    7   10   13    4    8    9   10   22    3 |    31   37   33   32   37   32   38   34   35   29    33
  11  |    9   11    6    9   15    3   12   12   12   11    3 |    33   46   39   32   52   37   48   33   35   35    37
  12  |    9   22    8   15   19    3   21   10    9   18    4 |    34   41   38   37   41   37   41   35   36   37    35
  13E |    7   12    6    9   18    4   10    9    9   20    3 |    25   31   25   22   33   25   32   25   22   33    25
  14E |    6   12    5    9   18    3   11    7   10   13    3 |    22   27   24   27   28   24   28   24   24   23    23
  15  |   10   26    5   11   16    5   22    8   13   14    4 |    27   37   29   28   35   28   37   29   30   29    28
  16  |    8   12    6   13   15    4   15   12    9   20    4 |    30   34   32   30   35   31   37   31   32   31    31
  17E |    9   13    5    9   20    4   21    8    7   12    4 |    26   31   29   31   33   28   35   29   31   31    28
  18  |    9   14    6   13   12    4   16    7    9   24    4 |    20   35   30   22   33   26   36   25   29   25    25
  19E |    6   11    5    9   16    3   12    8    8   11    3 |    40   46   45   42   48   44   46   41   44   42    43
  20  |    7   10    5   10   10    4   11    9   10   24    3 |    24   26   24   24   22   23   29   23   25   24    23
  21  |    8   14    5   10   14    5   14   13    6   20    3 |    38   49   45   40   53   43   53   38   40   39    42
  22  |    7   12    4    9   13    2   11    8    8   17    3 |    15   29   20   18   26   20   28   18   20   19    18
  23  |    8   11    5   14   19    5   12    8    7   12    3 |    47   50   51   51   53   48   52   48   47   46    48
  25  |   11   22    5   10   16    5   13   15    8   12    4 |    27   32   33   33   42   31   40   32   31   33    31
  26E |   24   26   10   16   17   11   18   30   16   25    7 |    83   89   81   81   90   79   90   84   82   88    82
  27  |    9   11    7    8   13    4   10   10   12   20    3 |    32   34   33   34   32   34   38   36   36   40    33
  28  |    9   13    6   10   19    3   11    8    6   14    3 |    19   29   23   20   33   20   29   21   22   18    21
  29E |   11   21    6   12   16    6   22   11   11   13    4 |    18   27   20   22   26   18   28   19   21   18    19
  30  |    9    9    5    8   13    3   10    8    8   12    3 |    17   21   20   20   18   19   24   18   20   18    18
  31  |    9   12    5   13   19    4   10    8    9   12    3 |    26   34   28   33   37   28   33   30   29   31    28
  32  |    7   14    5    9   11    3    9   10    7   14    3 |    25   30   30   25   27   27   31   28   28   31    28
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |   10   15    6   11   15    4   14   11   11   18      |T   29   36   32   31   36   31   38   31   32   32    31
 WRMS |    9   15    6   10   14    4   14   10    8   17      |NE  25   33   29   28   33   28   35   28   29   29    27
 MEDI |    9   13    6   10   15    4   13    9    9   15      |MD  26   32   29   28   33   28   35   29   30   31    28

Table 3.1697.2   GPS week: 1697   Day: 2   MJD: 56125.000                            

        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   13    8    9   13    5   11    8   12   10    3 |    39   51   50   41   54   45   57   41   44   39    45
   2  |    5   14   14   12   14    6   14    9   11   29    4 |    22   30   28   32   24   27   31   22   29   29    25
   3E |   12   17    7   12   15    6   16    6   18   11    4 |    21   30   24   23   22   20   29   20   24   20    21
   4  |    5   10    7    9   14    4    8    4   10   30    3 |    27   29   28   33   29   28   27   30   33   35    29
   5  |    9   15    8   13   15    9   16    7   11   24    4 |    19   29   24   30   25   24   27   24   20   24    22
   6E |   11   17    7   13   13    7   15   11   15   12    4 |    24   37   29   27   31   26   37   22   25   22    26
   7  |    9   16    7   10   21    3   12    5   13   12    4 |    24   39   31   30   33   29   35   29   31   27    28
   8  |    8   13    6    8   15    6   10    9    9   13    3 |    23   29   27   22   20   23   26   28   22   29    23
   9  |    8   18    6   12   15    4   11   10   11   15    4 |    21   31   27   29   27   27   26   31   26   36    25
  10  |    8   12    8    9   13    4    9    7   12   22    3 |    28   38   37   37   37   34   37   34   35   30    33
  11  |    7   14    7    9   15    4    9    7   11    9    3 |    22   37   31   26   39   27   35   23   25   21    27
  12  |   11   20   10   16   23    5   18    9   11   19    5 |    28   36   28   33   33   30   33   27   27   27    27
  13E |    6   14    7    8   13    5    9    9    8    9    3 |    21   32   26   21   28   24   27   17   21   20    21
  14E |    8   12    6   10   14    3    9    7    9   14    3 |    18   26   24   22   25   21   26   22   20   21    20
  15  |   12   28    8   12   16    5   22   11   11   15    5 |    19   36   27   29   30   26   31   25   25   25    23
  16  |    8   16    9   15   16    6   16   13   10   18    4 |    21   29   24   22   27   22   30   21   24   24    22
  17E |    8   14    9    9   15    4   14   10   10   16    4 |    26   27   23   25   27   25   29   28   28   31    25
  18  |    8   16   14   14   15    6   17   10    9   24    4 |    24   35   24   23   33   25   36   22   27   23    23
  19E |    7   13    8   13   16    5   11    7   11   10    3 |    37   36   38   30   34   35   37   31   34   30    34
  20  |    8   11    7   13   12    5   11    8   16   23    4 |    22   26   23   22   23   22   27   19   24   23    21
  21  |    8   16    7   13   12    5   17   11   10   20    4 |    29   40   36   33   40   33   41   30   32   31    33
  22  |    7   15    9   11   15    4   12   10   11   16    4 |    15   30   21   23   23   20   27   21   16   19    18
  23  |    6   13    7   12   13    5    9    8    7   14    3 |    30   38   34   34   39   32   36   30   30   34    31
  25  |    7   23    7   10   20    6   14   11   11   13    4 |    22   30   27   28   36   26   31   23   29   23    24
  26E |   20   21    8   14   15   11   17   23   13   20    6 |    76   80   76   78   77   78   84   84   78   83    77
  27  |    8   11    5   12   18    4   11    9    9   14    3 |    25   31   30   34   28   31   29   35   32   41    29
  28  |    8   12    9   10   23    4   11    7    8   16    4 |    20   29   24   21   31   19   27   22   19   23    21
  29E |   14   23   10   11   18    5   21   17   14   12    5 |    22   33   27   26   30   24   30   25   27   25    24
  30  |    8   10    8    9   11    6   10   10   12   10    3 |    17   25   22   21   19   19   24   15   25   18    19
  31  |    8   14    9   11   21    5   14   10   10   11    4 |    31   34   32   31   35   29   35   25   31   27    29
  32  |    5   14    9    9   12    3    9    9   10   11    3 |    20   25   23   18   25   21   26   19   21   18    20
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |    9   16    8   11   16    5   13   10   11   17      |T   25   34   29   29   31   28   33   27   28   28    27
 WRMS |    8   16    8   11   16    5   13    9    9   17      |NE  22   32   27   27   29   26   30   25   26   26    25
 MEDI |    8   14    8   11   15    5   12    9   11   14      |MD  22   31   27   28   30   26   30   25   27   25    25

Table 3.1697.3   GPS week: 1697   Day: 3   MJD: 56126.000                            

        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    5    9   12    4   13    9    9    8    3 |    57   64   61   57   68   59   69   56   62   55    60
   2  |    6   13    6   12   13    6   13    8   10   27    4 |    30   31   27   31   30   28   32   29   28   33    28
   3E |   13   18    8   12   15    5   17    8   22   11    4 |    25   32   26   25   23   25   29   25   37   23    24
   4  |    6    9    4   10   11    3   10    6    6   29    3 |    38   37   37   39   41   38   37   42   43   43    38
   5  |    9   18   10   10    8    6   15    7   10   25    4 |    26   27   26   27   24   24   26   26   24   27    24
   6E |   10   18    6   14   16    6   15   12   20   11    4 |    30   43   34   32   36   33   40   32   39   31    32
   7  |    9   16    7    9   18    3   14    6    9   11    3 |    36   42   37   37   41   36   38   35   38   34    36
   8  |    8   12    4    8   14    4    9   11    8   10    3 |    31   34   30   33   29   29   30   34   27   31    30
   9  |    9   16    7   11   16    3   10   10    7   13    3 |    38   40   38   38   33   35   38   39   33   38    37
  10  |    9   11    4   12   11    4   10    6    9   21    3 |    35   39   36   38   44   36   39   38   37   35    36
  11  |    8   12    6    8   16    5   11    6   13    7    3 |    38   45   39   37   49   39   43   36   42   37    39
  12  |   13   18    9   14   20    3   19   10    9   18    4 |    38   39   36   33   42   33   39   35   32   37    34
  13E |    7   12    6    8   11    3    9    7    7   10    2 |    30   30   27   24   33   26   30   26   25   27    27
  14E |    9   11    6    9   12    3   11    8    8   14    3 |    33   35   31   30   31   31   34   33   31   32    31
  15  |   11   26    7   11   18    4   24   11   11   13    5 |    33   39   31   33   37   30   39   34   28   33    31
  16  |    7   19    6   16   14    3   15   11   10   18    4 |    32   38   33   28   34   32   35   31   38   30    31
  17E |    9   14    7   10   15    3   20   11    8   14    4 |    25   26   23   20   22   21   28   25   24   26    22
  18  |    6   13    6    9   11    5   14    9    9   25    3 |    30   37   29   29   33   29   38   27   29   29    28
  19E |   11   12    7   12   15    3   11    9    8   10    3 |    53   53   50   48   51   51   53   55   57   52    51
  20  |    5   11    5    9   10    4   12    8    7   23    3 |    29   30   29   30   28   28   30   33   31   33    30
  21  |    7   15    5   11   13    4   15   12   10   19    4 |    36   44   39   34   45   36   43   33   36   34    36
  22  |    8   13    5   10   13    4   11    9    8   16    3 |    21   29   21   25   25   21   29   24   20   24    21
  23  |    6   13    6   10   12    5   11    8   10   12    3 |    39   39   37   38   38   37   37   38   39   35    37
  25  |    7   20    6   10   22    4   14    9   11   13    4 |    29   31   29   27   41   29   37   29   31   30    29
  26E |   18   19    8   13   22   13   16   16   14   21    5 |    88   97   94   93  102   88   98   91   87   99    92
  27  |    8   12    6    9   17    4    9    9    7   10    3 |    46   47   46   47   42   44   46   48   43   49    46
  28  |    7   13    5    9   21    4   10    7    7   17    3 |    24   32   25   24   38   23   29   28   26   28    26
  29E |   11   18    9   12   12    4   23   10    9   11    4 |    28   31   27   28   28   25   32   27   24   27    25
  30  |    7   11    4   12   11    3   11    8   10   11    3 |    23   24   24   23   20   23   23   21   29   22    22
  31  |   11   13    7   12   17    5   15    8    9   10    3 |    31   36   33   33   39   31   39   30   34   31    32
  32  |    8   14    6    7   12    4    9    8    6    9    3 |    30   32   32   31   31   29   30   31   34   30    31
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |    9   15    6   11   15    5   14    9   10   16      |T   34   38   35   34   38   33   38   35   35   35    34
 WRMS |    8   15    6   10   14    4   13    9    8   17      |NE  32   36   32   32   35   31   35   32   32   32    31
 MEDI |    8   13    6   10   14    4   13    9    9   13      |MD  31   37   32   32   36   31   37   33   33   32    31

Table 3.1697.4   GPS week: 1697   Day: 4   MJD: 56127.000                            

        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
------+--------------------------------------------------------+---------------------------------------------------------
   1M |    9   11    4   10   13    4   13    7    5   10    3 |    46   58   53   51   62   50   64   50   49   49    52
   2  |    7   12    5   11    9    4   16   10    8   27    4 |    16   20   15   18   19   14   22   19   15   25    15
   3E |   15   19    5   10   15    4   16   10   20   12    4 |    17   28   19   18   19   17   25   16   30   16    18
   4  |   11   11    5    7   12    3   12    9    9   30    4 |    23   23   24   27   22   23   22   26   26   30    22
   5  |   12   17    7    9    9    5   15    9    9   26    4 |    15   21   13   16   15   13   20   17   19   20    13
   6E |    8   17    6   15   15    4   15   10   16   12    4 |    18   33   23   21   29   20   32   17   28   17    21
   7  |    9   16    4   10   16    6   13    6   10   11    3 |    17   29   21   19   30   17   24   14   18   13    18
   8  |    9   12    5    8   15    4   10   12    8   11    3 |    13   20   17   16   16   13   19   16   17   12    13
   9  |   10   11    9   10   15    4   12   12    8   13    4 |    17   21   15   15   18   13   22   15   14   13    13
  10  |   10   10    5    7   11    4    9    9    7   20    3 |    23   32   27   26   36   26   31   27   32   22    26
  11  |    8   11    4   11   16    3   12    6   10   10    3 |    17   31   23   21   40   20   31   17   20   17    22
  12  |   15   19   10   15   16    3   19   12    8   17    5 |    14   26   18   18   28   15   27   17   19   16    16
  13E |    8   13    4    8   14    4   12    8    9    8    3 |    23   28   23   18   31   19   25   18   19   21    21
  14E |   12   14    7    9   16    3   13   11   12   20    4 |    30   36   34   32   36   31   30   31   37   33    32
  15  |   11   22    7   10   19    4   20   13   10   16    4 |    20   25   17   18   28   13   24   16   15   18    15
  16  |    8   17    7   15   11    3   16   12   12   18    4 |    17   25   18   15   25   16   25   15   21   14    17
  17E |   11   14    5    9   17    3   18   13    7   11    4 |    18   18   15   13   17   15   22   21   16   19    15
  18  |    9   15    6   14   12    3   15   11    9   23    4 |    27   38   31   26   37   29   38   31   31   29    29
  19E |    8   14    6   12   14    3   14    8    8   11    3 |    36   44   41   39   41   39   45   39   38   40    39
  20  |    6   13    5   12   11    3   12    8   11   24    3 |    21   21   18   15   19   15   20   19   21   18    18
  21  |    7   15    5   13   11    3   17   10   10   20    4 |    25   38   31   25   41   27   39   25   28   27    29
  22  |    9   12    6    8   12    3   12   11    9   20    3 |    12   22   12   13   21    9   21   15   12   15    10
  23  |    9   13    4   12   15    3   12   11    5   13    3 |    25   26   23   19   33   20   26   22   18   22    21
  25  |    8   22    6    8   13    4   15   11    8   14    4 |    13   18   20   13   31   14   29   14   19   15    16
  26E |   14   16    7   13   15   14   16   14   11   23    4 |    74   82   78   78   85   70   86   74   72   84    77
  27  |   10   17    7    9   16    4   12   12   10   13    4 |    18   23   18   14   22   15   23   15   13   15    15
  28  |    7   14    6   10   15    4   12   11    8   23    4 |    13   23   16   16   24   12   21   16   13   22    14
  29E |   11   18    7   11   16    4   23   13    6    9    4 |    35   37   33   32   35   30   39   34   30   36    33
  30  |    8    9    5    8   11    3   10   10    8   12    3 |    15   16   15   13   15   12   18   15   17   16    14
  31  |   10   14    6   13   15    4   16   10   14    9    4 |    20   26   21   16   28   17   26   13   23   13    18
  32M |    6   12    5    7   13    2    8    8   10   10    3 |    16   18   14   14   20   12   15   16   15   13    14
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |   10   15    6   11   14    4   14   10   10   17      |T   22   29   24   22   29   21   29   22   24   23    22
 WRMS |    9   15    6   10   13    4   14   10    7   17      |NE  17   24   19   18   25   16   25   18   19   18    17
 MEDI |    9   14    6   10   15    4   13   10    9   13      |MD  18   26   20   18   28   17   25   17   19   18    18

Table 3.1697.5   GPS week: 1697   Day: 5   MJD: 56128.000                            

        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    6   12   11    4   15    7   10   11    3 |    51   55   50   50   58   51   59   49   51   47    51
   2  |    8   15    5   10   11    4   14   12    9   29    4 |    23   26   23   29   23   24   26   27   26   25    24
   3E |   16   20    8   14   14    6   20   19   17   13    5 |    20   30   24   27   24   21   29   25   30   23    23
   4  |    9   12    6    5    9    3    8   11    4   32    3 |    26   26   28   31   29   28   26   32   33   30    28
   5  |   12   17    6    9   11    6   15   10    6   30    4 |    22   25   23   27   23   23   25   25   24   24    22
   6E |    7   19    7   12   18    5   15    7   13   13    4 |    22   36   27   24   30   22   32   21   26   23    24
   7  |    8   15    6    9   11    4   12    5   11   12    3 |    27   33   29   31   33   27   29   26   29   26    28
   8  |    7   13    5    5   12    5   11   13    9   12    3 |    21   28   25   26   23   22   24   30   25   23    24
   9  |   10   16    5   11   16    5   13   15   11   18    4 |    26   31   27   31   25   26   25   31   33   27    27
  10  |    7   12    7    8   10    5    8    9    9   23    3 |    26   35   31   30   35   29   33   29   31   27    29
  11  |    7   11    6   12   19    4   13    6    9   11    3 |    27   34   28   29   41   28   34   27   32   24    28
  12  |   15   21    8   14   18    4   18   12    8   16    4 |    27   35   31   31   35   29   33   31   30   30    29
  13E |    8   11    6    9   16    3   11   10   11   13    3 |    27   30   29   27   32   26   30   28   32   29    28
  14  |    7   12    6    9   25    5   12   10   10   17    4 |    30   34   37   31   43   31   34   35   34   32    33
  15  |   12   30    5   10   18    5   20   14    9   18    5 |    22   37   26   29   32   24   30   27   26   28    25
  16  |    9   16    6   13   15    4   18   10    9   19    4 |    20   26   22   21   22   19   27   25   23   24    21
  17E |   10   15    6    8   19    4   19   12    8   15    4 |    22   27   24   22   23   23   28   29   26   33    25
  18  |    8   15    6   16   10    5   15   10    7   24    4 |    26   36   32   28   32   27   35   30   28   27    29
  19E |    7   14    5   14   14    5   13    9    7   11    3 |    56   57   55   52   56   55   58   59   56   58    55
  20  |    7   14    5   10   10    4   13    7    8   25    3 |    26   23   25   24   21   22   27   21   26   24    24
  21  |    9   17    7   10   11    5   21    9    8   20    4 |    25   37   31   27   40   27   38   28   27   28    29
  22  |    8   14    5   11   14    5   13   11   10   23    4 |    14   25   18   18   23   15   23   21   21   24    17
  23  |    7   12    7   10   17    3   15   10    8   16    3 |    28   28   32   29   37   26   28   25   30   29    28
  25  |    8   21    5    7   16    5   15   12    8   12    4 |    20   28   27   24   33   24   33   26   25   27    24
  26E |   13   18   10   13   15    5   16    9   12   25    4 |    86  100   94   95  101   92  102   92   92  103    93
  27  |   10   18    5   10   20    6   15   15    9   15    4 |    33   37   34   36   30   33   33   39   38   37    33
  28  |    6   16    6   10   13    3   12   11    6   26    3 |    16   27   22   20   28   17   21   23   20   31    20
  29E |   13   23    7   11   15    6   22   10   12   13    4 |    26   32   27   26   34   24   32   28   27   30    28
  30  |    7    9    5   10   14    5   12   12    8   13    3 |    14   17   16   16   16   12   21   21   19   19    16
  31  |    9   12    6    9   17    4   14    9    8   11    3 |    23   29   26   22   30   23   32   25   25   24    24
  32  |    8   14    5    6   13    4   12    9   10   11    3 |    22   25   26   24   23   22   26   22   25   19    24
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |    9   16    6   11   15    5   15   11    9   19      |T   27   33   30   30   33   28   33   30   31   30    29
 WRMS |    9   16    6   10   13    5   14    9    7   19      |NE  23   29   26   26   28   23   28   27   27   26    25
 MEDI |    8   15    6   10   14    5   14   10    9   16      |MD  26   30   27   27   30   24   30   27   27   27    27

Table 3.1697.6   GPS week: 1697   Day: 6   MJD: 56129.000                            

        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   12    9   10   13    3   13   11    9   11    3 |    46   52   53   48   60   48   57   49   49   45    50
   2  |    8   17    7    9   16    5   17   15   11   29    4 |    26   32   25   32   23   26   31   32   25   31    26
   3E |   13   20    8   10   15    5   19   18   18   15    5 |    20   32   24   19   22   21   28   26   25   26    20
   4  |    7   10    7    8   12    5   10   13   10   31    4 |    25   31   29   35   33   28   27   38   34   36    30
   5  |   12   16    8    9   14    7   14   11    7   33    4 |    23   29   23   27   25   22   28   32   22   36    24
   6E |    9   18    8    8   18    4   14   11   11   13    4 |    18   34   26   20   35   19   32   17   20   19    21
   7  |    8   15    9   12   17    4   12    6   10   11    3 |    22   30   29   29   30   24   31   26   24   27    24
   8  |    8   13    6   10   14    2   10   13    8   13    3 |    17   25   19   18   13   17   21   26   13   23    18
   9  |    9   15    7   12   15    4   11   13    8   15    4 |    24   33   28   28   21   28   29   36   28   32    27
  10  |    8   12   10   13   14    4   10   10    5   26    4 |    27   37   35   38   40   32   35   36   35   34    33
  11  |    7   12    5   10   18    3    9    8   12   11    3 |    26   31   29   29   42   28   32   29   28   25    28
  12  |   16   19   11   17   18    4   19   11    9   18    5 |    32   37   28   29   29   29   34   31   30   33    29
  13E |   11    9   12   10   17    3   10    6    8   13    3 |    29   31   27   26   30   26   30   27   32   27    28
  14  |    5   12   10    8   14    3   13    8   10   17    3 |    30   35   37   35   43   32   34   34   36   29    34
  15  |   10   28    8   13   16    5   18   10    9   16    5 |    24   36   25   27   34   27   35   30   25   36    25
  16  |   10   15    8   15   17    5   15   10    7   20    4 |    19   25   18   14   24   15   25   16   20   18    17
  17E |    9   13    8    8   25    5   17    8    9   12    4 |    28   36   32   29   32   29   37   31   30   34    28
  18  |    6   13    7   13   12    5   15   13    7   24    4 |    25   34   29   27   32   27   36   29   28   29    26
  19E |    6   10    9   11   15    3   10   10   10   11    3 |    42   43   42   40   38   43   41   45   43   42    42
  20  |    6   11   18   11   13    6   11   10    8   25    4 |    22   24   27   22   24   21   24   23   24   25    23
  21  |    7   16    7   10   14    5   15   11    8   20    4 |    27   39   32   28   41   29   41   31   28   30    30
  22  |    6   10    8   10   11    3   12    9    7   23    3 |    15   25   21   15   24   17   24   21   16   24    17
  23  |    8   10   19    8   18    4   14   10    7   16    4 |    26   30   35   29   36   28   31   29   25   32    27
  25  |    8   20    8    7   20    3   15   10    7   17    4 |    19   27   25   21   32   24   32   24   28   24    23
  26  |   16   17    9   10   18    8   16   14    9   26    5 |   112  118  114  112  120  112  119  107  110  116   112
  27  |    9   11    6   11   17    6   11   13   10   11    3 |    30   36   29   33   24   32   34   41   33   39    31
  28  |    6   15    8   10   15    5   12    8    6   27    4 |    14   26   17   14   27   13   24   15   16   28    16
  29E |   13   16    8   12   18    4   23    9   10   10    4 |    18   25   20   21   24   16   25   15   17   19    16
  30  |    7   10    6   10   15    5   11   10    9   12    3 |    13   21   17   14   18   12   20   16   22   17    16
  31  |    9   12   10   15   18    4   16    9    9   11    4 |    20   25   22   18   28   19   26   18   17   20    19
  32  |    6   13    6    7   13    3    8   10    7   13    3 |    16   19   19   16   20   17   19   21   18   20    17
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |    9   15    9   11   16    4   14   11    9   19      |T   26   34   30   28   33   27   33   30   29   31    28
 WRMS |    8   15    9   11   15    4   13   10    8   16      |NE  22   30   25   24   28   23   29   27   24   28    24
 MEDI |    8   13    8   10   15    4   13   10    9   16      |MD  24   31   27   27   30   26   31   29   25   29    26



Table 4: Precise Navigation Summary.

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

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

Table 4.1697   GPS week: 1697   MJD: 56123.0-56129.0

CENT| CLK EPO  |        BRUX       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 2974 |U    9    10    22 |U    5     6    21 |U    0     0     0 |
emr | emr 2965 |    12    14    31 |U    8     9    25 |     0     0     0 |
esa | esa 2976 |     9     9    23 |U    5     6    21 |     0     0     0 |
gfz | gfz 2963 |U    9     9    24 |U    5     6    20 |U    0     0     0 |
grg | grg 2975 |U   16    17    43 |U   12    15    41 |     0     0     0 |
igr | igr 2973 |     9     9    23 |     5     6    20 |     0     0     0 |
igs | igs 2958 |     9    10    23 |     5     6    20 |     0     0     0 |
jpl | jpl 2964 |    10    10    25 |U    5     7    20 |     0     0     0 |
mit | mit 2976 |    10    10    24 |U    7     9    27 |U    0     0     0 |



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 5.1697.0   GPS week: 1697   Day: 0   MJD: 56123.0

CENT| CLK EPO  |        BRUX       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 2976 |    10     8    22 |     5     8    24 |  ----  ----  ---- |
emr | emr 2964 |    10    11    30 |     9     8    27 |  ----  ----  ---- |
esa | esa 2976 |    10     7    22 |     4     6    22 |  ----  ----  ---- |
gfz | gfz 2963 |     9     6    21 |     4     6    17 |  ----  ----  ---- |
grg | grg 2975 |    27    26    57 |    19    35    80 |  ----  ----  ---- |
igr | igr 2976 |     9     7    21 |     5     7    23 |  ----  ----  ---- |
igs | igs 2973 |    10     7    22 |     6     8    24 |  ----  ----  ---- |
jpl | jpl 2961 |    11     8    27 |     4     6    19 |  ----  ----  ---- |
mit | mit 2976 |    12     9    21 |    12    18    42 |  ----  ----  ---- |

Table 5.1697.1   GPS week: 1697   Day: 1   MJD: 56124.0

CENT| CLK EPO  |        BRUX       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 2965 |     9    12    25 |     4     6    20 |  ----  ----  ---- |
emr | emr 2964 |    11    12    37 |    10    11    25 |  ----  ----  ---- |
esa | esa 2976 |     8    12    24 |     5     6    18 |  ----  ----  ---- |
gfz | gfz 2963 |     8    12    24 |     5     6    22 |  ----  ----  ---- |
grg | grg 2976 |    13    19    39 |     9    15    44 |  ----  ----  ---- |
igr | igr 2965 |     9    13    24 |     5     7    22 |  ----  ----  ---- |
igs | igs 2957 |     9    13    25 |     4     6    20 |  ----  ----  ---- |
jpl | jpl 2961 |    10    13    25 |     5     8    24 |  ----  ----  ---- |
mit | mit 2976 |    10    13    26 |     6     8    28 |  ----  ----  ---- |

Table 5.1697.2   GPS week: 1697   Day: 2   MJD: 56125.0

CENT| CLK EPO  |        BRUX       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 2976 |     8     7    19 |     4     7    20 |  ----  ----  ---- |
emr | emr 2964 |    14    14    27 |     9     8    29 |  ----  ----  ---- |
esa | esa 2976 |     8     7    21 |     3     5    16 |  ----  ----  ---- |
gfz | gfz 2964 |     8     7    21 |     3     5    16 |  ----  ----  ---- |
grg | grg 2976 |    16    18    49 |    10     8    33 |  ----  ----  ---- |
igr | igr 2976 |     9     7    22 |     3     5    17 |  ----  ----  ---- |
igs | igs 2974 |     8     8    19 |     4     5    16 |  ----  ----  ---- |
jpl | jpl 2964 |    10     8    21 |     4     6    15 |  ----  ----  ---- |
mit | mit 2976 |     8     7    17 |     5     7    21 |  ----  ----  ---- |

Table 5.1697.3   GPS week: 1697   Day: 3   MJD: 56126.0

CENT| CLK EPO  |        BRUX       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 2976 |     9    12    23 |     4     7    17 |  ----  ----  ---- |
emr | emr 2964 |    15    21    35 |     8     8    21 |  ----  ----  ---- |
esa | esa 2976 |     9     9    21 |     4     7    19 |  ----  ----  ---- |
gfz | gfz 2965 |    10     9    22 |     5     8    18 |  ----  ----  ---- |
grg | grg 2976 |    12    13    44 |     8    11    26 |  ----  ----  ---- |
igr | igr 2974 |     9     9    21 |     4     6    17 |  ----  ----  ---- |
igs | igs 2967 |    10    11    22 |     4     6    17 |  ----  ----  ---- |
jpl | jpl 2964 |    11    11    22 |     4     8    22 |  ----  ----  ---- |
mit | mit 2976 |    11    11    24 |     5    10    23 |  ----  ----  ---- |

Table 5.1697.4   GPS week: 1697   Day: 4   MJD: 56127.0

CENT| CLK EPO  |        BRUX       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 2976 |    12    14    30 |     8     7    33 |  ----  ----  ---- |
emr | emr 2964 |    12    16    40 |    10     8    29 |  ----  ----  ---- |
esa | esa 2976 |    12    14    32 |     9     7    33 |  ----  ----  ---- |
gfz | gfz 2963 |    12    13    32 |    10     8    34 |  ----  ----  ---- |
grg | grg 2974 |    15    18    43 |    14    12    49 |  ----  ----  ---- |
igr | igr 2975 |    11    15    29 |     9     7    32 |  ----  ----  ---- |
igs | igs 2962 |    12    15    31 |     9     7    32 |  ----  ----  ---- |
jpl | jpl 2964 |    12    14    35 |     9     7    23 |  ----  ----  ---- |
mit | mit 2976 |    12    15    33 |     9     8    35 |  ----  ----  ---- |

Table 5.1697.5   GPS week: 1697   Day: 5   MJD: 56128.0

CENT| CLK EPO  |        BRUX       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 2976 |     9    10    24 |     5     6    16 |  ----  ----  ---- |
emr | emr 2968 |    13    15    25 |     8     7    26 |  ----  ----  ---- |
esa | esa 2976 |    10     8    29 |     5     6    17 |  ----  ----  ---- |
gfz | gfz 2961 |    10     9    33 |     6     6    18 |  ----  ----  ---- |
grg | grg 2975 |    16    11    33 |    11    11    24 |  ----  ----  ---- |
igr | igr 2975 |    10     9    30 |     5     6    15 |  ----  ----  ---- |
igs | igs 2934 |    10     9    28 |     5     5    16 |  ----  ----  ---- |
jpl | jpl 2967 |    10     9    30 |     6     7    19 |  ----  ----  ---- |
mit | mit 2976 |    10    10    31 |     6     6    22 |  ----  ----  ---- |

Table 5.1697.6   GPS week: 1697   Day: 6   MJD: 56129.0

CENT| CLK EPO  |        BRUX       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 2976 |     5     5    13 |     4     5    18 |  ----  ----  ---- |
emr | emr 2968 |     7     9    22 |     5    11    23 |  ----  ----  ---- |
esa | esa 2976 |     5     5    12 |     5     6    20 |  ----  ----  ---- |
gfz | gfz 2962 |     5     4    13 |     4     6    19 |  ----  ----  ---- |
grg | grg 2976 |    11    14    32 |    10    15    32 |  ----  ----  ---- |
igr | igr 2975 |     5     5    13 |     4     5    15 |  ----  ----  ---- |
igs | igs 2942 |     5     6    13 |     4     6    16 |  ----  ----  ---- |
jpl | jpl 2968 |     6     5    13 |     5     6    18 |  ----  ----  ---- |
mit | mit 2976 |     5     7    13 |     6     7    19 |  ----  ----  ---- |


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 6.1697   GPS week: 1697   MJD: 56123.500-56129.500

                                                         AC LOD  AC LOD
CENT  FLAG  |   Xpole   Ypole     Xrt     Yrt    LOD |    BIAS  BIAS RMS
            |   [uas]   [uas]   [uas/d] [uas/d]  [us]|    [us]    [us]
------------+----------------------------------------+------------------
cod   xxxxx |      11     -38       3    -114     -7 |       6     25
            |      15      18      87      62      9 |       2
emr   uuuuu |      54      10    -133      91     -1 |      15     34
            |      13      17      89      50      7 |       4
esa   uuuuu |     -25     -47      72       2     -1 |      10     27
            |      10      23      46      61      4 |       2
gfz   uuuuu |     -12      24      -2     -24      5 |      -2     26
            |      12      10      94      52      6 |       3
grg   uuuux |      16      -4      -4    -201     13 |       1     38
            |      15      11      43      53     35 |       3
igr   xxxxx |     -15      -7      -4     -40     -4 |       1     26
            |      20      10      45      63      5 |       3
irf   xxxxx |      -6      -7       3     -34      0 |       2     23
            |       7       8      25      18      3 |       2
jpl   uuuuu |       5     -18       6       9     -3 |      17     31
            |      23      30      55      52      6 |       2
mit   uuuuu |       5     -30     -34     -45     -5 |      17     30
            |      20      21      99      28      7 |       3
ngs   uuuuu |     -14      63     -38       3      0 |      12     22
            |      29      17      34      78      7 |       2
sio   uuuuu |      29      88      81     217      7 |      34     41
            |      18      24      71      42      6 |       2


Table 7.1697.0   GPS week: 1697   Day: 0   MJD: 56123.500

                                                         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     -33     -73     -95     -5 |       8     23
emr   uuuuu |      59      26    -254      35     -7 |      22     38
esa   uuuuu |     -18     -57      79      89     -5 |      14     26
gfz   uuuuu |      -7      31    -130     -87      6 |      -2     23
grg   uuuux |      37      -9     -32    -184     23 |      -1     38
igr   xxxxx |     -36     -11     -88    -105     -5 |       5     25
irf   xxxxx |     -18     -10      26     -31     -3 |       5     22
jpl   uuuuu |     -11      15     -10      49      8 |      19     32
mit   uuuuu |     -35     -34      91     -58    -19 |      24     31
ngs   uuuuu |      25      63       2     -97      2 |      15     23
sio   uuuuu |     -10      82     179     264     14 |      34     40

Table 7.1697.1   GPS week: 1697   Day: 1   MJD: 56124.500

                                                         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     -40      -7     -62      3 |       6     24
emr   uuuuu |      58       2    -144      94    -12 |      19     37
esa   uuuuu |     -29     -55      75      17     -5 |      11     26
gfz   uuuuu |     -26      34    -119     -47      5 |      -4     24
grg   uuuux |      11      -4     -23    -182      4 |       1     37
igr   xxxxx |     -14       1      29       6     -7 |       3     27
irf   xxxxx |      -4       3      24     -17      4 |       2     23
jpl   uuuuu |      33     -41     -51     -15     -2 |      19     32
mit   uuuuu |       4      -5      77     -24     -3 |      19     32
ngs   uuuuu |      -1      74     -62     -10      1 |      13     23
sio   uuuuu |      30     107     163     206     17 |      33     39

Table 7.1697.2   GPS week: 1697   Day: 2   MJD: 56125.500

                                                         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 |      14     -22     -51     -41      1 |       3     20
emr   uuuuu |      59      27    -183      43      2 |      11     28
esa   uuuuu |     -44     -85     158    -106      1 |       7     21
gfz   uuuuu |     -23      12      16      10     16 |      -8     21
grg   uuuux |       0       0       6    -286    -43 |       0     36
igr   xxxxx |      -5       6      32      28      0 |      -3     22
irf   xxxxx |      -7      -3      12     -21      2 |      -2     19
jpl   uuuuu |      30     -23     -53      78     -2 |      13     26
mit   uuuuu |      16      -7     -73       6     -4 |      14     24
ngs   uuuuu |     -20      83     -15      91    -10 |       9     16
sio   uuuuu |      44     105      22     221      8 |      29     34

Table 7.1697.3   GPS week: 1697   Day: 3   MJD: 56126.500

                                                         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 |      21     -29     -71    -128     -9 |       8     27
emr   uuuuu |      66       7    -102      87      0 |      16     34
esa   uuuuu |     -18     -37       7      36     -2 |      11     28
gfz   uuuuu |       8      32       9      53      8 |      -2     28
grg   uuuux |      26       3      29    -143     -5 |      -1     36
igr   xxxxx |      -6       0     -39     -10      4 |       2     27
irf   xxxxx |       2      -1      17     -34     -3 |       3     25
jpl   uuuuu |      14     -43      12      -7    -11 |      19     32
mit   uuuuu |       7     -35      17     -69     -7 |      18     30
ngs   uuuuu |     -70      55     -58     -88      3 |      12     22
sio   uuuuu |      38     100     112     166      5 |      35     43

Table 7.1697.4   GPS week: 1697   Day: 4   MJD: 56127.500

                                                         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 |      28     -75     133     -80    -19 |       7     27
emr   uuuuu |      48      -5     -37     176     -4 |      14     34
esa   uuuuu |     -26     -41      78     -35     -4 |      10     28
gfz   uuuuu |      -5      28       6      20     -4 |       0     27
grg   uuuux |      32     -24      56    -146     71 |      -2     37
igr   xxxxx |      -5     -12       1      12     -8 |       1     27
irf   xxxxx |     -10      -2     -46     -24     -4 |       2     25
jpl   uuuuu |      12     -50     107      51     -2 |      17     32
mit   uuuuu |       1     -17    -173     -63     -7 |      16     30
ngs   uuuuu |     -11      70     -55     -15     11 |      12     22
sio   uuuuu |      23     109      -7     160      0 |      35     43

Table 7.1697.5   GPS week: 1697   Day: 5   MJD: 56128.500

                                                         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     -33     117    -181    -17 |       5     28
emr   uuuuu |      62      27    -198     134      9 |      12     33
esa   uuuuu |     -16     -38      65       3      2 |       9     28
gfz   uuuuu |     -19      12      90     -53      1 |      -1     28
grg   uuuux |       1      11      12    -215     35 |       4     40
igr   xxxxx |     -48      -7      29    -114    -12 |      -1     28
irf   xxxxx |      -5     -13      -6     -43      0 |       1     25
jpl   uuuuu |     -24     -11      -1     -71    -10 |      16     32
mit   uuuuu |       9     -52    -115     -40      0 |      15     30
ngs   uuuuu |       1      63       2      52     -1 |      12     22
sio   uuuuu |      36      70      48     258      1 |      35     43

Table 7.1697.6   GPS week: 1697   Day: 6   MJD: 56129.500

                                                         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     -30     -27    -209     -2 |       3     27
emr   uuuuu |      28     -13      -9      70      4 |      12     33
esa   uuuuu |     -22     -12      42       6      6 |       9     29
gfz   uuuuu |      -9      17     114     -64      1 |       0     28
grg   uuuux |       7      -5     -75    -251      6 |       8     43
igr   xxxxx |      10     -23       6    -101     -2 |      -2     27
irf   xxxxx |       2     -21      -6     -69      3 |       1     25
jpl   uuuuu |     -18      29      40     -23     -3 |      15     31
mit   uuuuu |      31     -61     -60     -66      4 |      14     29
ngs   uuuuu |     -19      31     -80      89     -9 |      13     23
sio   uuuuu |      41      44      51     241      5 |      35     43



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