[IGSREPORT-20299] Wk 1659 IGS Final Orbits

Jim Ray igs.acc at noaa.gov
Thu Nov 10 06:02:43 PST 2011


Author:  AC Coordinator / NOAA NGS

sum-file Version 2.0
Final IGS Orbit Combination - Week 1659   (Oct 23, 2011 - Oct 29, 2011)

Contacts: J. Ray       (jim.ray at noaa.gov),
          J. Griffiths (jake.griffiths at noaa.gov)


COMBINATION STRATEGY:
---------------------

Starting with GPS week 860, the IGS Final orbit combination is done directly
in the ITRF without any alignment to the Bulletin B EOP series.

Each centre satellite clock corrections are first transformed to a common 
reference. One of the following two methods can be used (the REMARKS section of
this report gives which method is used):
[1] For each centre, a clock offset and a drift are estimated with respect to
    the broadcast clock corrections using only non-SA satellites;
[2] A chosen reference centre is aligned to the broadcast clock corrections
    using all satellites. All other centres are then aligned to that reference
    centre. 
The offsets and drifts are used to align each centre satellite clock
corrections to GPS time. Ephemerides and clock corrections are then combined
as weighted averages computed over all centres. Each centre is given a
position weight and a clock weight. The position weights are computed from
each centre's absolute deviation to the unweighted average orbit after the
estimation of a 7-parameter Helmert transformation. The clock weights are
either computed from [1] the absolute deviation of the initial alignment to
broadcast clock for the non-SA satellites, or [2] from the absolute deviation
of centre's aligned clock corrections with respect to the unweighted mean.
Finally, a 7-parameter Helmert transformation and clock offset and drift are
estimated for each centre with respect to the combined solutions and parameters
and RMS of fit reported. All the above estimations are performed using the
L1-norm robust scheme.

  Each centre ephemerides are also evaluated individually and independently from
the orbit combination by using week long arcs. The Earth Orientation Parameters
(EOP) used in this evaluation are those submitted by the respective centres.
The IGS combined orbits/clocks and all centres providing both orbit and clock 
solutions are further evaluated by an independent point positioning (navigation)
program that uses both phase and pseudorange data. This is primarily intended 
for testing clock solution precision as well as the orbit/clock consistency.

 Like the clock solutions broadcast in the navigation message, the combined
satellite clocks are corrected for the periodical relativistic correction (see
e.g. GPS interface Control document ICD-GPS-200, p.73):

                              -2*(X.V)/c  [distance unit],

where X and V are the inertial sv state and velocity vectors and c is the speed
of light. Also for compatibility, no satellite L1/L2 delay calibration should be
applied.


SOFTWARE:
---------

The weighted average software used was originally developed by T. Springer
and G. Beutler in 1993. The GPS long arc orbit analysis software used here for
individual centre ephemeris evaluation was developed by Beutler et al. at the
Astronomical Institute of the University of Bern (AIUB). For more details on
the orbit combination and complete references for both software see:

  Beutler G., Kouba J. and T. Springer, 1995, Combining the orbits of the IGS 
  Analysis Centers, Bulletin Geodesique, 69, pp 200-222.

  Kouba J., Mireault Y. and F. Lahaye, 1995, 1994 IGS Orbit/Clock Combination
  and Evaluation, Appendix I of the Analysis Coordinator Report, International
  GPS Service for Geodynamics (IGS) 1994 Annual Report, pp. 70-94.

  Kouba J. and Y. Mireault, 1996, IGS Analysis Coordinator Report, 
  International GPS Service for Geodynamics (IGS) 1995 Annual Report, 
  pp. 45-76.

  Kouba J. and Y. Mireault, 1997, Analysis Coordinator Report, 
  International GPS Service for Geodynamics (IGS) 1996 Annual Report, 
  pp. 55-100.


PRODUCTS GENERATED:
-------------------

The resulting average ephemeris and clocks are output to daily files in SP3
format. The satellite accuracy codes displayed in the header are based on the
weighted RMS for each satellite. Note that each file contains all the
satellites that appear in any of the centre ephemeris files. If a satellite or
centre was excluded from combination, a note in the REMARKS section of this
report will identify the exclusion and the reason.

  The resulting x and y earth rotation parameters (ERP) associated with the IGS
ephemeris files and their rates (xrt, yrt) are computed using a weighted average
of all available centres (as part of the separate SINEX combination since GPS
week 1051; weighted according to the orbit combination before that time). 

  Starting with GPS wk 0894, IGS LOD combinations were implemented in the 
Final IGS solutions.  AC LOD biases with respect to Bulletin A are estimated
using Bulletin A most recent 3 weeks (21 days), i.e. up to 5 days prior to
the last non-predicted day of Bulletin A.  AC LOD biases are removed and the
new AC bias-free LODs are used to compute a weighted IGS LOD which in turn
is integrated into IGS UT1-UTC. The starting UT1-UTC value is chosen as
Bulletin A fifth day prior to its last non-predicted day. Both IGS LOD and 
UT1-UTC values are printed in the IGS Final erp file.



The Final Orbit files generated and uploaded into CDDIS @ NASA/GSFC are:

igs1659[0-6].sp3  IGS GPS ephemeris files in SP3 format.
igs1659[0-6].clk  IGS GPS satellite and station clocks in clock RINEX format.
igs1659[0-6].cls  IGS GPS clock combination summary report.
igs16597.erp      Earth Rotation Parameters (ERP) and their rates as well as
                  Universal Time (UT1-UTC) and Length Of Day (LOD) associated 
                  with IGS ephemerides.
igs16597.sum      Complete report.

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

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

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

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

 4. The following clock solutions were excluded from the combination because they
    were biasing the combined clock solutions (clock shifts/outliers) but were
    kept for the RMS computation.  Duplicate entries can arise due to separate
    combination runs for the 30-s clocks ACs (listed first) and the 5-min clock
    ACs (listed second).
    
               Day | Centre | PRN/STA list
               ----+--------+---------------
                0  |  EMR   | 8
                0  |  ESA   | CEDU CEDU KOUR
                0  |  GFZ   | MDVJ SFER
                0  |  GRG   | KOUR NRC1
                0  |  JPL   | 3 8 CAS1
                0  |  MIT   | 20 21 27 20 21 27 DAV1 NNOR
                1  |  EMR   | 8 8
                1  |  GFZ   | SFER WSRT
                1  |  GRG   | AMC2
                1  |  JPL   | 8
                1  |  MIT   | 27 3 27 MAW1
                2  |  COD   | MAC1
                2  |  EMR   | 8 8 KERG YELL KERG YELL
                2  |  ESA   | NICO NICO
                2  |  GFZ   | 19 CHUR MCM4 PERT
                2  |  GRG   | AMC2
                2  |  JPL   | 8 YELL
                2  |  MIT   | 1 19 27 1 19 27
                3  |  COD   | WROC SOFI WROC
                3  |  EMR   | 8 8
                3  |  ESA   | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20
                3  |  ESA   | 21 22 23 25 26 27 28 29 30 31 32 1 2 3 4 5 6 7 8
                3  |  ESA   | 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 25 26
                3  |  ESA   | 27 28 29 30 31 32 KOUR
                3  |  GFZ   | HARB MDVJ
                3  |  GRG   | AMC2 KOUR NKLG
                3  |  JPL   | 8 BRUS
                3  |  MIT   | 14 27 14 27 DAV1 GUAT KOSG
                4  |  ESA   | RAMO
                4  |  GFZ   | MDVJ WAB2
                4  |  GRG   | AMC2 SANT
                4  |  MIT   | 27 27 KOSG KOSG KOUR
                5  |  COD   | 21
                5  |  EMR   | 21
                5  |  GFZ   | 8 KOSG MDVJ
                5  |  GRG   | SANT USN3
                5  |  JPL   | 8
                5  |  MIT   | 27 27 GUAT GUAT
                6  |  COD   | 27
                6  |  EMR   | 8
                6  |  GFZ   | 30 KOSG KOUR MDVJ SYOG
                6  |  GRG   | USN3
                6  |  MIT   | 27 27 CAS1 BOR1 GUAT KOSG KOUR

 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)
                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 IGS05 frame. These rotations were estimated in the IGS
    SINEX combination process, performed by the IGS Reference Frame Coordinator
    at the Institut Geographique National (IGN), and are based on the common
    stations between the individual AC SINEX solutions and the IGS05.snx SINEX
    frame. The estimated 7 transformations, from which only the 3 rotations are
    applied to the orbit and ERP values, are:
    
            |    DX     DY     DZ      RX     RY     RZ     SCL
     Centre |   [mm]   [mm]   [mm]   [uas]  [uas]  [uas]   [ppb]
     -------+---------------------------------------------------
       COD  |    -.1     .4    -.1     -39     -2     23     .08
       EMR  |    6.5    6.0    6.4     -19     27    -26     .29
       ESA  |    6.0    3.2   -1.0      90   -198    179     .03
       GFZ  |    -.7    1.0    -.1     -27      0      4     .05
       GRG  |    6.6    1.7   14.4     -18     29     -2     .14
       JPL  |    1.2    6.3   17.4      40    -49     50     .35
       MIT  |    5.9    3.7    8.2     -28     12    -28     .16
       NGS  |    6.7    -.1    5.7     -19    -34     31     .44
       SIO  |    8.4    5.1   -5.6      86   -201     26     .09


 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 1.1659.a). It also displays the computed satellite
position sigmas for the combined orbits (table 1.1659.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 2.1659.[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 3.1659.[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 5.1659.0-6).

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 1659 summary.                       (Oct 23, 2011 - Oct 29, 2011)

Table 1.1659.a   GPS week: 1659   MJD: 55857.000-55863.000

         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  256|    0     0     1    80   -39    -9  -.30   10    9 |     -80    -500     20     90
        |    0     0     1    14    11    14   .02           |     491    1125
emr   92|    2     1     0    28  -117   -11   .42   20   20 |    3169    -288     14    140
        |    1     1     2    30    15    10   .04           |    1147    1110
esa  146|    0     0     3   -96   163    40   .18    9    9 |   -1649    1032     21    194
        |    0     0     1    13     7    16   .03           |     790    1722
gfz  199|   -1     0    -3    -8   -78     0  -.23   11   11 |     234     -53     22    101
        |    0     1     1    38    58     9   .05           |     262     181
grg  129|    2     1     3    15   -79   -16   .55   19   18 | 1428593    -274     50    235
        |    0     0     1    10    18    13   .08           | 3779634     435
igr  n/a|    0     0     0    -6   -45   -62  -.16    5    5 |   -6862   -1382     18     85
        |    0     0     0    23    17    11   .03           |    2590     951
jpl  142|    0     0     0   -95    64    20   .57   15   15 |    3641    -299     19     95
        |    0     1     0    15    15    11   .02           |     934    1079
mit  257|    0    -1    -4    10   -95   -54  -.37   15   13 |    -260     -56     22    199
        |    0     0     0    14    25    13   .07           |     217     581
ngs  222|    1     0     0    55     2    -7  -.19   11    9 |   55063   19932   1775   3620
        |    0     1     1    32    18    13   .03           |  145928   54133
sio  253|   -1     1    -6  -170   354   -12  -.34   22   21 |     ---     ---    ---    ---
        |    1     1     1    25    46     5   .03           |     ---     ---


Table 1.1659.b   GPS week : 1659   MJD: 55857.000-55863.000   

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



Table 2: Daily transformation of each centre to the combined IGS orbit and
         clocks for each day of the week. The transformation displayed is the
         sum of a priori and estimated transformations.
         WRMS - RMS weighted by the centres SP3 header accuracy codes.
         STA  - Number of stations in the daily solutions.
   
Table 2.1659.0   GPS week: 1659   Day: 0   MJD: 55857.000                            

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  256|    0     0     0    67   -49    -4  -.32    9    9 |    -266     -80     22     81
        |                     27   -24                       |
emr   92|    1     3     0    35  -119    -4   .47   20   20 |    2963    -810     14    150
        |                    -39   -13                       |
esa  146|    1     0     3  -104   165    42   .23   10   10 |   -2974    3821     17    173
        |                     55    31                       |
gfz  199|   -1     0    -3     0    13     2  -.23   10   10 |     -44     256     23     99
        |                     29    16                       |
grg  129|    2     0     1     9   -79    -7   .62   15   14 | 9999999     210     38    256
        |                     38   -49                       |
igr  n/a|    0    -1     0    -4   -19   -72  -.14    5    5 |   -2980   -2032     18     67
        |                    -38    -4                       |
jpl  142|    0    -1     0  -110    48    34   .60   17   16 |    3601    -754     18     89
        |                     74   -22                       |
mit  257|    0    -2    -4    19   -54   -67  -.47   14   13 |    -511     768     20    189
        |                    -16    14                       |
ngs  222|    0     0     0    21   -31   -14  -.19   12    9 |  385997  142673   1691   3900
        |                    -42    41                       |
sio  253|   -2     0    -8  -194   386   -20  -.32   22   21 |     ---     ---    ---    ---
        |                     74  -191                       |

Table 2.1659.1   GPS week: 1659   Day: 1   MJD: 55858.000                            

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  256|    0     1    -1    87   -34    -2  -.32   10    9 |    1014   -3017     20    102
        |                     27   -39                       |
emr   92|    2     0     0    59  -111     0   .46   21   21 |    1751    -163     12    144
        |                     -5   -18                       |
esa  146|    0     0     3  -119   151    43   .14    9    9 |   -1119   -1027     15    184
        |                     50    19                       |
gfz  199|   -2     0    -2   -25   -74     8  -.26   10   11 |     641     -13     25    112
        |                     -3     3                       |
grg  129|    1     1     2    26   -68   -11   .65   15   15 |     -57    -863     43    216
        |                      0   -81                       |
igr  n/a|    0     0    -1    22   -53   -72  -.19    5    5 |   -5298   -1376     18     75
        |                    -18    25                       |
jpl  142|    0     0     0   -82    80     6   .58   16   16 |    2526     -37     18     93
        |                     75   -38                       |
mit  257|    0    -1    -2    -1   -97   -69  -.44   14   13 |    -101   -1093     32    233
        |                     14    26                       |
ngs  222|    1     0     0    87    11   -14  -.21   11    8 |     867   -2828   1815   4068
        |                    -64   -14                       |
sio  253|   -2     1    -7  -201   338   -12  -.37   22   20 |     ---     ---    ---    ---
        |                     76  -176                       |

Table 2.1659.2   GPS week: 1659   Day: 2   MJD: 55859.000                            

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  256|    0     2     1   108   -54   -29  -.30   10    9 |    -357     105     19     85
        |                     63   -36                       |
emr   92|    0     2     0    70  -113   -13   .44   19   19 |    1922    2140     12    129
        |                     12   -50                       |
esa  146|    0     0     3  -102   171    62   .19    7    7 |   -1942    1648     14    171
        |                     53    15                       |
gfz  199|   -2     0    -1   -51  -160    -1  -.26    9    9 |     128    -277     21    110
        |                     33    26                       |
grg  129|    1     0     1    22  -117   -18   .60   16   15 |    -469     237     52    219
        |                     18   -83                       |
igr  n/a|    0     0     0    26   -46   -71  -.12    5    5 |   -6469     351     17     82
        |                     -5    12                       |
jpl  142|   -1     0     0   -86    44    18   .60   15   15 |    2795    1994     20    112
        |                    103   -66                       |
mit  257|    1    -1    -4    36  -115   -50  -.39   14   13 |    -553     170     24    184
        |                     19    27                       |
ngs  222|    1    -2    -1   110    26   -25  -.22   10    8 |    -393     118   1932   3481
        |                    -91    24                       |
sio  253|    0     0    -7  -131   292    -8  -.37   21   19 |     ---     ---    ---    ---
        |                     52  -175                       |

Table 2.1659.3   GPS week: 1659   Day: 3   MJD: 55860.000                            

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  256|    0     0     1    81   -44    10  -.32   10    9 |    -132    -170     30     98
        |                    -12   -54                       |
emr   92|    3     0     0    35   -92   -19   .39   19   19 |    4791    -993     14    115
        |                     11   -67                       |
esa  146|   -1    -1     2   -80   169    44   .19    9    9 |   -1212    1621     54    128
        |                     40    37                       |
gfz  199|    0     2    -2   -41  -102   -10  -.29   13   13 |     262     -24     23     94
        |                     34    39                       |
grg  129|    1     0     3    24   -86   -29   .48   20   19 |     512    -789     56    264
        |                     17   -94                       |
igr  n/a|    0     0    -1   -10   -53   -50  -.15    5    5 |   -5664   -2595     23    112
        |                     -6    14                       |
jpl  142|    0     3     1   -75    61    23   .55   15   14 |    5204   -1319     24     99
        |                     67   -67                       |
mit  257|    0    -1    -3    -4  -120   -50  -.34   15   13 |      51    -310     19    169
        |                     17    42                       |
ngs  222|    0    -1    -1    51    14    -9  -.16   12    9 |    -189     -89   1658   3429
        |                    -51    -8                       |
sio  253|    0     1    -6  -183   320   -11  -.35   23   23 |     ---     ---    ---    ---
        |                     44  -185                       |

Table 2.1659.4   GPS week: 1659   Day: 4   MJD: 55861.000                            

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  256|    0     0     1    70   -45    -1  -.29    9    8 |    -385     -15     15     89
        |                     20   -80                       |
emr   92|    3     2     0   -11  -111   -30   .37   19   19 |    4399    -489     17    151
        |                      9   -37                       |
esa  146|    0     0     5   -90   160    53   .16   10    9 |   -2134    1877     18    250
        |                     46    46                       |
gfz  199|   -2     1    -5    27   -38   -10  -.22   12   11 |     -19       1     22     98
        |                    -18    29                       |
grg  129|    3     1     5    10   -65   -37   .54   21   19 |      53    -171     54    238
        |                     41   -96                       |
igr  n/a|    0     0     0   -27   -72   -69  -.14    4    4 |   -7587   -1582     18     91
        |                      3    -4                       |
jpl  142|   -1    -2     0  -103    59    23   .55   15   14 |    4497    -657     18     93
        |                     65  -159                       |
mit  257|    1    -2    -4    -1  -122   -63  -.32   17   15 |    -192     224     22    192
        |                     14    42                       |
ngs  222|    1     0    -2    31    -4     0  -.14   12    9 |    -404      -7   1723   3483
        |                    -22   -11                       |
sio  253|   -2     1    -5  -152   327    -8  -.37   23   22 |     ---     ---    ---    ---
        |                     41  -215                       |

Table 2.1659.5   GPS week: 1659   Day: 5   MJD: 55862.000                            

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  256|    0     0     1    84   -27   -10  -.28   10    9 |    -283     112     21     88
        |                     25   -25                       |
emr   92|    1     0     1     1  -133    -4   .42   18   18 |    3446   -1011     18    153
        |                     54   -12                       |
esa  146|    0     0     2   -87   155    11   .17   11   10 |   -1607     137     17    215
        |                     27    82                       |
gfz  199|   -3     1    -3   -21   -58    14  -.16   12   12 |     526    -268     22     94
        |                      7    40                       |
grg  129|    4     0     3    -2   -68     1   .43   24   21 |      24    -376     54    242
        |                     54   -67                       |
igr  n/a|    0     0     0   -34   -44   -53  -.15    5    5 |   -9425   -1694     17     68
        |                     32    10                       |
jpl  142|    0     0     0   -91    77    29   .56   14   13 |    3539    -778     17     91
        |                    114   -39                       |
mit  257|    0    -2    -4    11   -81   -47  -.30   14   12 |    -319    -275     19    215
        |                     22    28                       |
ngs  222|    1     1     0    53     4     0  -.21   11    8 |    -302     106   1898   3641
        |                    -52    42                       |
sio  253|    0     2    -6  -155   418    -6  -.32   22   20 |     ---     ---    ---    ---
        |                     48  -244                       |

Table 2.1659.6   GPS week: 1659   Day: 6   MJD: 55863.000                            

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  256|    0     0     2    65   -23   -27  -.28    9    9 |    -155    -441     17     93
        |                     59   -67                       |
emr   92|    3     3     5     9  -138   -10   .41   20   20 |    2913    -691     16    144
        |                     19    13                       |
esa  146|    0     0     0   -88   168    27   .20    8    8 |    -555    -849     18    240
        |                     60    35                       |
gfz  199|   -1     2    -4    54  -129     3  -.19    9    9 |     144     -48     21    102
        |                    -18    43                       |
grg  129|    2     1     5    18   -70   -14   .49   24   21 |      89    -171     53    216
        |                     20   -61                       |
igr  n/a|    0     0     0   -15   -29   -46  -.19    5    5 |  -10613    -747     20    100
        |                      4    17                       |
jpl  142|    0     0     0  -116    79     3   .55   14   13 |    3329    -546     19     88
        |                     98   -91                       |
mit  257|    0    -2    -4    16   -75   -30  -.32   13   11 |    -198     120     21    214
        |                     -1    27                       |
ngs  222|    1     0     0    34    -3    14  -.18   11    8 |    -131    -443   1710   3339
        |                     36    11                       |
sio  253|   -2     2    -6  -172   397   -18  -.30   20   18 |     ---     ---    ---    ---
        |                     44  -228                       |

       
       
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 3.1659.0   GPS week: 1659   Day: 0   MJD: 55857.000                            

        Weighted Average                                            Orbit Dynamics (7 days)
 PRN  |  cod  emr  esa  gfz  grg  igr  jpl  mit  ngs  sio  IGS |   cod  emr  esa  gfz  grg  igr  jpl  mit  ngs  sio   IGS
------+--------------------------------------------------------+---------------------------------------------------------
  X1  |    9   18    9    8  ---    7   18   17   14   14    5 |    63   68   64   62  ---   64   67   63   65   59    63
   2  |    8   21    6    9   17    5   16   13    7   32    4 |    25   40   34   26   41   30   39   30   31   32    30
   3  |   10   11   10    7   11    5   12   13   12   33    4 |    18   22   20   15   26   14   26   16   15   29    16
   4  |   12   20    6    7   12    6   10   20    9   20    4 |    17   26   13   16   19   16   18   15   12   16    12
   5  |    8   18   10    6   20    5   20   10   10   12    4 |    16   27   21   18   36   17   29   18   18   19    18
   6  |    8   12   11   10   11    4   12   13   12   24    4 |    22   26   26   22   31   21   31   21   22   27    23
   7E |    8   20   10   10   14    7   21   12   11   12    4 |    25   32   24   27   36   24   33   25   23   23    24
   8E |   15   19   12    9   19    6   19   19   23   27    6 |    26   28   24   25   29   22   29   26   33   32    22
   9E |   11   19   14   11   15    9   16   15   13   22    5 |    35   43   40   35   43   36   41   35   34   31    34
  10  |   12   16    7   10   15    5   16   13   10   26    4 |    27   30   20   24   29   23   28   26   25   29    22
  11  |    7   15   11   12   19    6   12    9   16   21    4 |    17   25   21   18   33   16   25   18   17   23    16
  12  |   10   27   11   10   13    5   18   18    9   25    5 |    23   35   23   25   27   23   30   25   23   23    21
  13  |    6   21    7    9   17    5   13   10   11   21    4 |    18   30   21   24   34   19   28   18   21   19    19
  14  |   10   22   11   11   14    4   16   14   12   17    5 |    22   34   30   31   34   26   32   28   26   24    25
  15  |    9   23   11    8   12    4   20   10   13   13    5 |    15   28   25   17   29   17   25   19   22   17    18
  16  |   10   27    9    9   14    5   17   19   13   17    5 |    18   33   18   17   29   14   24   19   17   18    15
  17  |   11   13    6   14   12    4   17   12   11   34    4 |    51   54   53   57   54   51   56   51   50   61    52
  18  |    8   27   20   14   17    7   18   13    8   17    6 |    66   75   66   68   74   65   71   68   69   69    67
  19  |    7   13   10    9   11    3   14    8   13   32    4 |    30   37   34   30   35   30   38   29   31   31    30
  20  |    7   22    9    8   20    5   18   13    8   17    4 |    21   29   19   22   27   18   22   26   18   27    18
  21  |    8   24   11    8   18    6   17   14    7   18    5 |    25   36   25   23   32   25   31   27   22   24    23
  22  |    7   25   10   10   18    5   17   21    9   16    5 |    18   31   20   15   34   18   28   26   19   27    18
  23  |    8   26    9   13   14    6   16   13    9   21    5 |    13   32   18   22   26   16   26   16   20   19    15
  25  |    8   15   12    9   13    7   13   17    9   14    4 |    21   24   17   18   24   16   25   18   18   18    14
  26  |    9   12    9    7   11    6   16    9   12   12    4 |    18   22   18   15   21   12   18   18   21   19    15
 X27  |   22   22   19   20  ---   25   21   16  ---  ---    9 |    15   34   32   27  ---   21   33   34  ---  ---    21
  28  |   12   18    8   10   17    5   20   15   13   15    5 |    28   34   33   38   39   28   34   32   28   30    30
  29  |    8   18    8   12   11    4   17   11   10   29    4 |    35   40   37   36   36   33   39   35   32   40    34
 X30  |   10   15   11   10   11    4  ---   15   14   23    5 |    27   29   23   21   27   22  ---   26   22   22    22
  31E |    8   22   11   11   16    4   22   11   11   16    5 |    28   36   27   28   35   25   34   25   26   27    25
  32  |   12   18    7    7   13    6   15   17   10   20    4 |    28   28   28   29   24   24   27   35   27   31    26
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |    9   20   10   10   15    5   17   14   12   22      |T   26   34   28   27   33   25   32   28   26   28    25
 WRMS |    9   20   10   10   14    5   16   13    9   21      |NE  24   34   26   26   32   24   31   28   25   27    23
 MEDI |    9   19   10   10   14    5   17   13   11   20      |MD  23   32   24   24   32   22   29   26   22   27    22

Table 3.1659.1   GPS week: 1659   Day: 1   MJD: 55858.000                            

        Weighted Average                                            Orbit Dynamics (7 days)
 PRN  |  cod  emr  esa  gfz  grg  igr  jpl  mit  ngs  sio  IGS |   cod  emr  esa  gfz  grg  igr  jpl  mit  ngs  sio   IGS
------+--------------------------------------------------------+---------------------------------------------------------
  X1  |   11   18    8   14  ---    7   17   19   12   15    5 |    39   46   41   42  ---   39   47   39   41   37    40
   2  |   10   20    8   13   16    4   14   16   11   36    5 |    27   36   37   33   42   30   36   30   33   32    31
   3  |    9   15    5   12   15    5   15   12    9   33    4 |    17   26   21   20   27   17   27   21   16   30    18
   4  |   10   17   10   12   11    6    9   16    9   22    4 |    16   23   21   14   19   15   18   19   17   21    14
   5  |    9   27    8   12   16    4   21   13   11   16    5 |    16   35   23   22   36   17   28   19   17   18    19
   6  |    8   14    4   10   15    4   13   13   10   21    4 |    24   29   25   25   32   23   29   27   22   30    24
   7E |    9   20   11    7   13    4   17   12   14   17    4 |    27   37   29   32   36   31   36   34   38   35    31
   8E |   18   19   12   11   19    5   18   20   22   30    6 |    17   29   17   20   22   16   25   25   27   29    15
   9  |   16   20    8    8   16    9   17   15   15   24    5 |    31   39   36   38   38   38   40   38   42   41    35
  10  |   15   19    7   13   14    7   14   15   10   27    5 |    25   28   27   22   23   19   26   25   24   31    21
  11  |    7   15    6    9   18    4   14   11   13   19    4 |    16   28   21   18   35   17   26   18   20   23    18
  12  |   10   22   11   11   15    6   18   16   13   24    5 |    21   32   24   25   28   20   28   24   23   23    21
  13  |    7   22   10    9   18    4   13   14   11   20    4 |    18   32   22   23   35   18   30   20   21   19    20
  14  |    9   22    9   10   15    3   16   14   11   18    4 |    23   33   26   24   31   22   31   27   23   24    23
  15  |    5   26    9    8   14    5   18   10    7   13    4 |    16   32   21   21   28   17   25   17   19   19    18
  16  |    9   29    6    9   14    4   18   19    7   19    5 |    16   34   20   20   29   17   26   22   17   21    17
  17  |   12   13    8   14   12    5   16   16    7   33    4 |    28   35   31   34   32   29   34   28   31   33    29
  18  |    8   33   12   11   17    6   17   14    8   14    5 |    83   90   79   82   83   79   87   83   81   82    81
  19  |    9   13    6   13   11    7   15   10   11   26    4 |    21   30   25   20   31   20   30   22   23   21    22
  20  |    8   24    6    9   15    5   17   11    9   14    4 |    19   27   17   17   18   15   21   18   18   18    15
  21  |   10   19    9    6   21    5   14   12   11   16    4 |    22   29   18   20   28   18   25   23   21   23    18
  22  |    7   26    9   12   19    5   13   20    9   14    5 |    23   35   25   22   34   19   30   26   18   27    22
  23  |    9   27   10   11   15    6   15   13   10   21    5 |    18   37   21   23   29   17   28   18   19   20    18
  25  |   11   17    8   10   15    7   13   16    9   15    4 |    16   23   17   18   23   13   26   17   16   14    13
  26  |    7   14    8    7   14    5   12    8    8   14    3 |    17   20   18   15   19   14   19   18   15   18    15
 X27  |   21   20   16   15  ---   19   14   15  ---  ---    7 |    16   22   16   25  ---   21   20   23  ---  ---    12
  28  |   11   17    7   10   17    3   18   15    6   17    4 |    29   36   32   32   37   29   34   29   30   28    30
  29  |    7   16   10   11    9    4   16   13   15   29    4 |    21   26   20   22   20   19   25   21   21   27    19
 X30  |   11   19    9   13   12    6  ---   16   10   21    5 |    36   38   33   32   31   30  ---   33   29   35    31
  31E |   11   22   12   11   11    6   21   10    9   15    5 |    44   45   38   40   44   40   48   43   38   45    40
  32  |   12   20    7    8   17    5   17   19   13   22    5 |    36   45   43   41   39   38   46   48   37   47    39
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |   10   21    9   10   15    5   16   14   11   22      |T   25   34   27   27   32   24   31   27   26   29    24
 WRMS |    9   21    9   11   15    5   16   13    8   20      |NE  27   37   29   29   34   26   33   30   27   31    26
 MEDI |    9   20    8   11   15    5   16   14   10   19      |MD  21   32   24   23   31   19   28   24   22   27    21

Table 3.1659.2   GPS week: 1659   Day: 2   MJD: 55859.000                            

        Weighted Average                                            Orbit Dynamics (7 days)
 PRN  |  cod  emr  esa  gfz  grg  igr  jpl  mit  ngs  sio  IGS |   cod  emr  esa  gfz  grg  igr  jpl  mit  ngs  sio   IGS
------+--------------------------------------------------------+---------------------------------------------------------
  X1  |    9   16    8    8  ---    8   17   20   11   15    4 |    51   55   55   51  ---   53   57   52   50   52    51
   2  |    9   18    8    9   17    5   14   12   11   30    4 |    24   31   32   23   35   24   36   27   28   31    26
   3  |   15   11    7    8   12    6   11   14    8   30    4 |    25   21   19   15   22   14   23   20   17   29    15
   4  |    8   23    6    7   10    5   10   14    8   19    3 |    15   29   11   15   19   11   17   19   17   19    12
   5  |    6   18    7    7   21    3   17   12   10   12    4 |    18   25   24   17   37   18   27   21   23   19    21
   6  |    8   10    7    7   10    6   12   13    9   20    3 |    20   22   19   19   22   16   24   24   18   28    16
   7E |    7   19    6    7   20    4   17   12    7   18    4 |    30   32   28   27   34   28   31   29   32   34    29
   8E |   16   22    8   14   20    4   20   20   20   29    6 |    27   36   29   31   36   28   33   35   37   38    29
   9  |   12   17    8   11   16    7   17   14   12   22    4 |    19   28   23   23   30   21   30   27   24   27    22
  10  |   10   19    6    9   12    3   12   16    8   24    4 |    17   24   16   19   20   15   18   21   20   23    15
  11  |    9   17    6    7   18    5   12   11   11   14    3 |    16   28   16   17   32   15   26   18   21   18    16
  12  |    8   24    8    8   16    5   18   15   11   24    4 |    27   34   23   22   28   21   30   27   25   27    22
  13  |    9   20    8    6   22    4   14   14    9   17    4 |    18   30   20   19   33   17   27   18   21   15    19
  14  |    8   21    7   10   14    4   16   13    9   16    4 |    17   28   22   20   27   19   29   20   17   15    19
  15  |    7   22    8    9   16    6   17   11   10   14    4 |    13   26   17   17   28   15   26   16   20   16    17
  16  |   12   25    5   10   14    6   18   19   10   21    4 |    16   30   19   21   26   15   24   24   18   27    17
  17  |    9   13    8   11   13    5   16   15    8   31    4 |    35   36   32   37   40   32   36   35   33   42    33
  18  |   12   29   12   11   17    5   13   13   11   13    5 |    56   60   51   47   50   50   55   52   53   53    52
  19  |    7   13    7   12    9    6   14   13    9   23    4 |    24   30   24   24   26   21   31   23   23   23    22
  20  |    6   21    6    7   18    6   15   11   11   12    4 |    17   26   15   18   16   13   20   19   14   18    13
  21  |    8   18    7    6   17    4   13   16   12   17    4 |    27   33   27   24   28   25   28   22   26   29    24
  22  |    7   19    7    8   18    5   14   14    7   13    4 |    24   30   26   16   32   20   34   23   21   24    23
  23  |   10   27    9    8   18    5   15   11    8   20    4 |    14   33   19   16   23   14   24   16   17   17    15
  25  |    9   16    5    9   16    3   15   16   12   18    4 |    19   25   15   17   23   13   27   18   20   16    14
  26  |   21   13    7   11   14    3   14   11   12   15    4 |    23   17   14   16   19   10   16   16   20   18    12
 X27  |   20   22   13   23  ---   17   14   18  ---  ---    8 |    13   29   22   31  ---   20   26   31  ---  ---    18
  28  |   10   17    7   11   15    4   16   13    9   17    4 |    23   30   23   31   35   23   24   28   24   28    24
  29  |    9   15    6    9   13    4   18   18    9   27    4 |    26   31   27   26   27   24   35   24   26   31    25
 X30  |    7   15    5   11   14    4  ---   15   10   18    4 |    27   33   28   33   30   28  ---   30   29   34    28
  31E |   14   20    9    9   12    5   17   19   11   18    4 |    57   65   60   59   60   59   62   55   60   60    59
  32  |   12   20    6    8   14    5   18   15   12   24    4 |    19   31   26   27   31   21   32   26   20   32    22
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |   10   19    7    9   16    5   15   14   10   21      |T   24   31   25   25   29   22   30   26   25   28    23
 WRMS |    9   19    7    9   15    5   15   13    8   19      |NE  21   32   23   24   29   21   28   25   23   26    22
 MEDI |    9   19    7    9   16    5   15   14   10   18      |MD  23   30   23   22   28   20   27   24   21   27    22

Table 3.1659.3   GPS week: 1659   Day: 3   MJD: 55860.000                            

        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
------+--------------------------------------------------------+---------------------------------------------------------
  X1M |   10   18    7   12  ---    6   17   19   11   13    5 |    46   52   44   47  ---   46   53   43   47   43    45
   2M |   10   18    8   17   20    5   14   11   13   33    5 |    36   39   41   33   42   36   36   37   46   42    37
   3M |    8   12   12   10   14    5   12   14   12   33    4 |    20   26   22   17   27   17   26   21   18   30    18
   4  |    9   18   10    9   14    6   10   11    9   19    4 |    13   25   15   13   19   12   17   17   14   18    12
   5M |    9   22    9   13   31    5   19   13   10   16    5 |    18   30   25   24   41   20   27   22   19   22    21
   6M |    6   12   10   13   12    4   10   13   11   22    4 |    24   31   27   27   31   23   32   28   23   32    25
   7  |   15   19   10   14   23    5   17   11   11   21    5 |    41   45   47   46   46   39   48   42   44   37    43
   8E |   17   18   13   15   18    7   22   21   21   30    7 |    30   36   33   34   31   31   36   38   32   37    29
   9  |    9   16    9   16   20    4   13   13   14   24    5 |    14   25   20   21   27   14   23   22   17   27    15
  10  |   11   18    7   13   19    5   13   16   10   25    4 |    18   27   21   22   27   16   25   24   20   25    18
  11M |   11   15    8   10   24    6   13   15   13   15    5 |    18   30   22   20   38   20   28   19   22   24    20
  12  |    9   23    9   16   16    6   14   13   10   21    5 |    35   43   37   33   39   34   38   34   37   37    34
  13  |    8   18    9   10   22    3   12   14   11   18    4 |    19   30   20   22   38   18   27   17   16   16    18
  14  |   10   22    9   14   21    5   15   17    9   17    5 |    24   35   29   32   35   24   33   31   31   26    27
  15M |    9   25   10   15   22    5   14   11    8   15    5 |    15   30   23   23   34   16   25   23   17   23    19
  16  |   10   26    9   11   17    4   18   18    7   25    5 |    16   33   23   20   29   16   28   22   17   26    19
  17M |   11   13    8   18   13    5   15   16   10   33    4 |    51   55   54   57   55   50   55   55   51   62    52
  18  |   12   29   10   15   29    7   14   32   10   32    7 |   116  124  117  122  119  116  122  125  121  122   119
  19M |    8   15    7   10   19    6   11   16   12   24    4 |    27   32   26   26   32   25   32   27   24   26    25
  20  |    7   24    9   11   27    4   15   13   10   14    5 |    19   31   17   20   26   17   21   21   21   22    16
  21  |    8   20    9   12   21    4   13   13   11   19    4 |    19   31   23   24   26   20   27   22   22   26    21
  22  |    7   19    9   13   26    5   12   16   11   13    5 |    23   32   27   24   40   23   31   25   26   28    25
  23  |    7   22    9   11   19    4   15   13   12   21    4 |    18   32   19   19   34   16   25   17   18   18    16
  25  |    8   13    9   13   17    6   17   12   15   21    4 |    23   29   27   21   31   20   33   23   25   23    22
  26M |    6   12   10   15   19    5   11    9    9   19    4 |    13   20   16   17   25   12   18   19   14   19    14
 X27  |   23   20   23   32  ---   28   16   17  ---  ---   10 |    10   25   32   33  ---   33   20   27  ---  ---    16
  28M |   10   20   10   16   21    4   19   15   11   19    5 |    36   43   41   43   45   38   40   42   48   34    40
  29M |    6   15    9   15   15    4   16   15   15   30    5 |    30   36   32   34   31   30   36   32   31   48    31
 X30  |    6   18    8   14   13    6  ---   20   17   28    5 |    39   43   41   39   39   33  ---   40   33   40    37
  31  |   18   20   10   15   14    8   23   12   14   20    6 |    90   90   93   94   93   84   97   88   91   82    91
  32  |   12   19    9   11   19    4   16   18   10   27    5 |    23   28   23   21   26   22   26   25   25   29    21
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |   10   19    9   13   20    5   15   15   12   23      |T   29   38   33   33   38   29   36   33   32   34    30
 WRMS |    9   19    9   13   19    5   14   13    9   23      |NE  28   38   32   32   39   29   34   32   31   34    29
 MEDI |    9   18    9   13   19    5   14   14   11   21      |MD  23   32   27   24   34   23   28   25   24   27    22

Table 3.1659.4   GPS week: 1659   Day: 4   MJD: 55861.000                            

        Weighted Average                                            Orbit Dynamics (7 days)
 PRN  |  cod  emr  esa  gfz  grg  igr  jpl  mit  ngs  sio  IGS |   cod  emr  esa  gfz  grg  igr  jpl  mit  ngs  sio   IGS
------+--------------------------------------------------------+---------------------------------------------------------
  X1  |    8   16    8    8  ---    4   16   21   14   14    5 |    42   47   44   38  ---   41   48   35   43   38    40
   2  |    7   19   11   14   21    4   16   11    8   29    4 |    18   27   26   19   31   20   31   21   18   26    21
   3  |    7   13    6   14   16    4   11   14    8   33    4 |    17   22   17   15   26   15   26   17   17   26    16
   4  |    7   14    8    8   15    5    9   15   11   21    4 |    13   18   10   13   17   13   18   15   13   18     8
   5  |    8   22    8   14   30    4   20   13    8   15    5 |    15   31   20   21   39   18   33   16   16   14    18
   6  |    8   11    7   14   13    4   11   14   10   22    4 |    20   24   19   19   24   17   26   21   20   22    19
   7  |    6   17    7   10   25    5   20   14    9   15    4 |    30   39   32   35   41   34   38   31   33   30    31
   8E |   17   24   13   19   23    9   18   28   26   30    7 |    71   71   75   73   72   70   70   72   79   73    72
   9  |    9   18    8   14   21    4   13   17   15   22    5 |    17   27   17   20   29   20   28   25   30   28    19
  10  |   10   18    9   11   22    4   14   19    9   26    5 |    18   26   15   20   27   16   27   19   16   22    13
  11  |    8   16    8    9   22    3   13   19   10   13    4 |    32   38   30   33   39   32   41   37   30   33    29
  12M |    8   22   12   14   17    8   16   18    9   18    5 |    50   57   50   48   50   49   58   61   49   59    50
  13  |    5   20   10   10   26    4   13   14   12   20    4 |    21   32   22   22   37   20   29   19   24   15    19
  14  |    9   20   11   12   19    3   15   22   11   19    5 |    17   28   21   22   31   19   28   26   20   21    17
  15  |    7   22    9   11   23    3   14   13    7   16    4 |    13   27   18   16   33   15   23   18   15   20    14
  16  |    8   26   10   11   17    4   19   19   13   27    5 |    16   33   19   14   27   15   26   19   18   25    15
  17  |    9   13    8   13   16    2   14   21   15   35    5 |    24   27   26   29   24   25   28   24   29   28    25
  18  |    8   25   13   14   25    4   12   15   13   14    5 |    46   52   45   49   56   46   44   44   48   45    44
  19  |    9   15    6   10   16    3   13   22    6   31    4 |    29   33   28   22   29   25   33   24   26   21    26
  20  |    6   19   10    9   22    4   16   16   12   18    5 |    21   28   21   19   25   20   29   21   22   20    18
  21  |    7   19    9   10   19    3   11   13   15   19    4 |    18   25   20   19   23   16   20   18   13   25    15
  22  |    5   23   11   12   24    3   10   18    9   13    5 |    13   28   18   14   34   13   21   15   15   19    14
  23  |    7   28   12    9   21    4   15   12   11   22    5 |    21   38   20   17   31   17   29   18   18   17    16
  25M |    8   14   12   10   17    6   13   12   11   18    4 |    37   38   32   35   34   35   44   40   36   39    34
  26  |    6   11    6   13   19    4    9   12   11   19    4 |    17   22   16   17   26   16   21   20   18   21    15
 X27  |   22   21   32   27  ---   25   15   17  ---  ---   11 |    12   24   48   25  ---   29   26   29  ---  ---    20
  28  |   12   20    7   16   19    3   16   18    9   20    5 |    20   31   22   25   28   19   29   22   22   23    20
  29  |   10   16   11    7   15    4   16   13   11   30    4 |    22   29   23   25   28   24   31   21   24   27    22
 X30  |    8   17    9   10   14    5  ---   18   14   25    5 |    20   31   22   23   23   19  ---   21   19   21    19
  31  |   13   20   13   11   23    4   22   28   15   19    6 |    56   57   57   53   61   54   57   47   55   49    53
  32  |    9   16    9    9   17    4   15   24   13   28    5 |    17   22   16   17   22   14   27   21   14   23    12
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |    9   19   10   12   21    4   15   17   12   23      |T   25   33   27   26   33   25   32   27   26   28    24
 WRMS |    8   19    9   11   19    4   14   15    9   22      |NE  19   29   23   21   29   19   26   22   19   22    17
 MEDI |    8   19    9   11   19    4   14   17   11   20      |MD  20   29   22   22   29   20   29   21   20   23    19

Table 3.1659.5   GPS week: 1659   Day: 5   MJD: 55862.000                            

        Weighted Average                                            Orbit Dynamics (7 days)
 PRN  |  cod  emr  esa  gfz  grg  igr  jpl  mit  ngs  sio  IGS |   cod  emr  esa  gfz  grg  igr  jpl  mit  ngs  sio   IGS
------+--------------------------------------------------------+---------------------------------------------------------
  X1  |   12   16    8    9  ---    5   13   19   11   12    5 |    46   51   47   40  ---   44   54   39   43   43    44
   2  |    9   17    9   13   24    4   11    9    6   30    4 |    23   30   26   27   33   23   28   25   24   34    24
   3  |    8   12   11    9   17    2   10    9   11   33    4 |    16   21   16   14   18   14   22   14   16   28    14
   4  |    9   17    9    8   19    4    8   10    9   19    4 |    15   20   13   17   19   13   16   18   15   18    13
   5  |    9   21    9   11   36    5   19   11    8   11    5 |    14   29   21   22   43   17   30   18   18   19    19
   6  |    7    9   12   12   14    2    9   10   14   21    4 |    16   22   15   20   19   15   21   17   20   23    14
   7  |    7   17    9   11   31    5   18   11   10   14    5 |    16   27   16   18   30   15   24   17   19   16    14
   8E |   17   18   15   15   24    5   17   24   16   28    6 |    72   74   69   72   71   72   70   74   75   75    71
   9  |   12   20    9   12   24    5   12   12   10   22    5 |    16   30   19   19   30   16   24   21   17   21    16
  10  |   12   15    5   11   26    6   12   11    9   24    4 |    18   26   18   24   31   17   23   25   21   24    19
  11  |    9   14    6   10   24    6   11   17   12   14    4 |    25   36   30   24   39   24   34   28   23   24    26
  12  |    9   23   14   12   21    5   15   14   12   20    5 |    41   51   46   43   45   41   44   47   42   46    43
  13  |    7   20   11   10   28    4   12    9    8   18    4 |    16   29   21   18   33   16   25   13   15   11    15
  14  |    8   18   13   12   23    5   14   15   13   19    5 |    16   28   24   22   30   16   27   22   17   20    18
  15  |   11   19   11   11   25    5   13   11   11   13    5 |    10   27   18   19   34   12   25   14   15   14    14
  16  |    9   22   11    9   20    3   15   11   10   25    4 |    15   28   18   15   24   12   22   14   13   20    13
  17  |   11   13   10   22   15    4   15   13   10   31    5 |    28   29   28   38   29   27   30   29   29   28    28
  18  |    9   28   13   13   34    5   15   10   10   16    5 |    67   76   70   71   76   69   71   71   72   71    70
  19  |    7   15    8    9   17    4   12   18    8   29    4 |    21   29   24   19   23   19   27   23   19   21    21
  20E |    8   19   12    8   26    5   13    9   10   16    4 |    24   31   21   25   30   23   26   23   23   23    21
  21  |    9   20   10   10   22    8   10   15   13   23    4 |    18   29   18   21   24   19   21   28   18   27    18
  22  |    8   19   13   14   34    4   12   19    8   16    5 |    17   26   25   21   39   16   27   19   15   17    18
  23  |    8   24   10   12   25    4   14    9    9   23    5 |    15   31   19   16   27   13   24   15   14   12    13
  25  |   10   16   14    9   22    5   13   13   15   20    5 |    27   34   31   31   34   26   36   33   28   31    29
  26  |    9   13    7   11   20    4   10   10    8   13    4 |    13   22   13   17   25   11   17   15   14   11    12
 X27  |   28   23   25   27  ---   16  ---   16  ---  ---   12 |    11   27   31   29  ---   25  ---   22  ---  ---    17
  28  |   11   18    7   15   21    3   13   14    8   19    4 |    29   33   24   29   33   26   30   30   27   23    26
  29  |    8   13   11    9   18    5   14   14   13   31    4 |    22   26   25   23   26   21   25   24   22   31    21
 X30  |    9   14   10   10   21    6  ---   16   13   26    5 |    21   25   19   23   21   18  ---   22   23   25    19
  31  |   10   16   14   11   33    7   22   16   14   18    6 |    21   26   24   23   37   21   32   16   23   19    19
  32  |   12   18    8    9   24    5   15   22   12   27    5 |    20   24   22   17   29   17   28   22   21   25    17
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |   10   18   11   12   24    5   14   14   11   22      |T   23   32   26   26   32   23   30   25   24   26    23
 WRMS |    9   18   10   12   21    5   13   12    8   20      |NE  20   30   24   24   32   20   28   24   22   24    20
 MEDI |    9   18   10   11   24    5   13   13   10   20      |MD  18   29   22   22   30   18   27   22   20   23    19

Table 3.1659.6   GPS week: 1659   Day: 6   MJD: 55863.000                            

        Weighted Average                                            Orbit Dynamics (7 days)
 PRN  |  cod  emr  esa  gfz  grg  igr  jpl  mit  ngs  sio  IGS |   cod  emr  esa  gfz  grg  igr  jpl  mit  ngs  sio   IGS
------+--------------------------------------------------------+---------------------------------------------------------
  X1  |   10   15    8   11  ---    5   15   17   10   13    4 |    50   58   53   55  ---   52   58   47   50   58    53
   2  |    8   21    8    9   20    4   13   12    9   29    4 |    25   33   27   21   34   21   29   24   26   33    23
   3  |    7   12    7    6   18    5    7    8    8   33    3 |    18   22   19   15   25   16   24   18   18   30    17
   4  |    8   18    7    7   15    3   13   10    7   15    3 |    10   19    9   14   15    9   16   14   12   17     9
   5  |   10   26    8    5   38    4   21   15    9   12    5 |    19   32   22   20   44   18   28   19   19   20    19
   6  |    5   10    6    9   16    2    9    8   10   20    3 |    21   24   21   22   27   19   27   23   20   27    20
   7  |    9   22    8   10   29    5   19   12    7   12    5 |    30   35   32   32   38   30   36   26   31   27    29
   8E |   17   20   10   13   26    8   17   24   13   24    6 |    94   93   92   94   93   89   97   96   93   97    91
   9  |   10   20   11   10   23    6   14   12   13   25    4 |    14   28   18   21   28   15   26   17   20   23    17
  10  |   10   16    5    9   23    6   12   10   10   24    4 |    16   24   16   22   26   13   18   20   22   21    15
  11  |    8   15    6    7   21    5   13   14   12   10    4 |    25   39   31   31   44   27   41   27   27   32    30
  12  |    7   27   11    9   21    9   16   13   15   15    5 |    32   39   36   33   41   33   35   28   33   31    31
  13  |    8   21    8   13   29    5   14    8    9   17    4 |    21   29   24   26   38   21   28   19   27   14    21
  14  |    9   20    8    6   25    4   13   14   14   20    4 |    17   25   27   22   31   19   24   25   21   20    21
  15  |    9   21    8    5   24    4   12    8    8   14    4 |    14   25   21   17   36   16   23   17   17   16    17
  16  |    8   27    7    8   19    4   14   11    6   20    4 |    15   30   17   16   23   15   22   17   17   18    15
  17  |   11   13    8   15   16    8   13   15   13   30    4 |    46   47   46   49   48   45   46   48   46   49    46
  18  |    6   28    7    6   39    5   14   10    7   16    4 |    54   61   53   52   48   52   55   55   58   55    53
  19  |    7   15    4    7   14    4   10   16    9   29    3 |    31   37   32   29   33   31   35   30   30   27    31
  20E |    9   22    9   10   22    5   11    9    8   12    4 |    20   25   22   21   22   17   20   22   22   19    19
  21  |    7   21    7    6   23    5   11   17   11   18    4 |    18   28   16   16   28   15   22   23   14   26    17
  22  |    7   20    7    4   36    6    9   11    7   11    4 |    29   35   29   26   40   24   31   30   29   28    27
  23  |    8   27    9   13   26    5   17   10    8   21    5 |    19   34   21   23   31   16   29   19   21   15    18
  25  |    9   17    7    6   23    7   14   10   14   15    4 |    21   27   24   20   32   20   32   18   25   20    21
  26  |    9   15    7    6   20    5   11    9   11    8    3 |    18   25   21   18   31   16   26   19   17   15    18
 X27  |   26   24   24   22  ---   17  ---   18  ---  ---   11 |    10   25   30   28  ---   18  ---   19  ---  ---    18
  28  |   11   20    7   10   21    4   15   13   11   18    4 |    25   30   22   31   32   24   28   29   25   24    25
  29  |    8   15    8    7   18    5   15   15   15   31    4 |    33   37   34   33   35   32   37   33   29   41    31
 X30  |    8   16    8   11   19    5  ---   17   14   27    5 |    16   23   18   25   19   16  ---   23   15   25    17
  31  |    8   15    8   10   33    5   19   22   10   14    5 |    44   46   48   44   56   44   50   46   45   41    44
  32  |   12   20    7    9   24    8   18   19   12   26    5 |    20   29   21   24   28   22   29   21   23   33    20
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |    9   20    8    9   24    5   14   13   11   20      |T   26   34   29   29   35   25   33   28   28   30    26
 WRMS |    9   20    8    9   21    5   13   11    8   18      |NE  20   30   23   24   29   20   27   23   23   24    20
 MEDI |    8   20    8    9   23    5   14   12   10   18      |MD  21   30   24   24   32   20   29   23   23   26    21



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 4.1659   GPS week: 1659   MJD: 55857.0-55863.0

CENT| CLK EPO  |        BRUS       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 2966 |U   15    20    43 |U    6    10    23 |U    7     8    19 |
emr | emr 2972 |U   17    21    49 |U    7     9    24 |     9    12    21 |
esa | esa 2976 |    19    20    46 |U    5     9    20 |     8     9    20 |
gfz | gfz 2971 |U   17    21    45 |U    6     9    21 |U    7     8    17 |
grg | grg 2779 |    24    22    72 |U    7    10    30 |    12    11    24 |
igr | igr 2962 |    16    20    45 |     6     9    22 |     9     8    19 |
igs | igs 2975 |    19    20    45 |     6     9    21 |     7     9    20 |
jpl | jpl 2842 |U   25    26    48 |U    6     9    24 |     9    12    22 |
mit | mit 2976 |U   94    44   171 |U    9    12    30 |U   12    15    34 |



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 5.1659.0   GPS week: 1659   Day: 0   MJD: 55857.0

CENT| CLK EPO  |        BRUS       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 2968 |     7     7    21 |     5     9    23 |     4     7    20 |
emr | emr 2971 |     8     7    22 |     6     7    21 |     7    11    21 |
esa | esa 2976 |     7     6    22 |     5     8    24 |     6     9    18 |
gfz | gfz 2968 |     8     6    26 |     6     8    20 |    11    11    18 |
grg | grg 2755 |     9     8    24 |     5     9    25 |    10    11    16 |
igr | igr 2975 |     7     6    22 |     6     8    23 |     6     8    16 |
igs | igs 2976 |     8     6    23 |     5     7    22 |     7     8    17 |
jpl | jpl 2863 |    10     7    24 |     6     8    23 |     8     9    18 |
mit | mit 2976 |    19    22    47 |    11    24    40 |    10    17    29 |

Table 5.1659.1   GPS week: 1659   Day: 1   MJD: 55858.0

CENT| CLK EPO  |        BRUS       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 2965 |    10     8    27 |     6     9    24 |     5     7    19 |
emr | emr 2972 |    12     9    31 |     6     9    23 |     6     8    14 |
esa | esa 2976 |    12     9    28 |     6     9    20 |     6     8    18 |
gfz | gfz 2972 |    11     8    28 |     7    11    24 |     5     7    18 |
grg | grg 2784 |    16    15    40 |     7    12    25 |     9     9    23 |
igr | igr 2975 |    12     8    28 |     6    11    23 |     5     6    18 |
igs | igs 2976 |    11     9    27 |     6     9    22 |     6     7    18 |
jpl | jpl 2865 |    14     9    32 |     6     9    25 |     7     8    26 |
mit | mit 2976 |    49    20    82 |    17    15    57 |    19    29    36 |

Table 5.1659.2   GPS week: 1659   Day: 2   MJD: 55859.0

CENT| CLK EPO  |        BRUS       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 2968 |    16    25    41 |     6     8    21 |     6     7    13 |
emr | emr 2972 |    17    23    40 |     7    11    26 |     8    11    19 |
esa | esa 2976 |    17    25    37 |     5     9    20 |     6     7    12 |
gfz | gfz 2972 |    16    27    41 |     6     9    21 |     6     8    13 |
grg | grg 2784 |    23    27    50 |     7    12    28 |    10    10    20 |
igr | igr 2960 |    18    28    42 |     5     8    21 |     7     8    12 |
igs | igs 2976 |    16    25    40 |     5     9    21 |     6     8    14 |
jpl | jpl 2871 |    28    32    56 |     6    10    26 |     7    10    12 |
mit | mit 2976 |    33    46    80 |     6     9    24 |     7     7    15 |

Table 5.1659.3   GPS week: 1659   Day: 3   MJD: 55860.0

CENT| CLK EPO  |        BRUS       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 2963 |    47    76   145 |     6    12    26 |     9     9    21 |
emr | emr 2972 |    45    73   147 |     7    10    26 |    10    11    23 |
esa | esa 2976 |    57    69   148 |     5    11    21 |    12     8    23 |
gfz | gfz 2971 |    46    74   143 |     6    11    21 |     6     6    17 |
grg | grg 2784 |    63    65   148 |     8    12    30 |    18    11    43 |
igr | igr 2951 |    47    75   144 |     6    11    23 |    20     8    27 |
igs | igs 2970 |    56    67   146 |     6    11    24 |     8     9    23 |
jpl | jpl 2871 |    63    98   111 |     6    12    27 |    10    12    25 |
mit | mit 2976 |   480   123   816 |     6    13    23 |    19    13    29 |

Table 5.1659.4   GPS week: 1659   Day: 4   MJD: 55861.0

CENT| CLK EPO  |        BRUS       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 2969 |    12    10    34 |     6     9    22 |     7     8    22 |
emr | emr 2972 |    15    12    46 |     8    11    21 |     8    11    22 |
esa | esa 2976 |    11    10    37 |     5     9    18 |     7    10    21 |
gfz | gfz 2973 |    11    10    33 |     5     9    17 |     6     9    17 |
grg | grg 2784 |    41    18   195 |  ----  ----  ---- |  ----  ----  ---- |
igr | igr 2973 |    11    10    37 |     5     9    18 |     6     8    18 |
igs | igs 2976 |    11    11    35 |     5     9    17 |     7     9    19 |
jpl | jpl 2867 |    19    16    55 |     5    10    19 |     9    13    23 |
mit | mit 2976 |    14    40    36 |     7     7    21 |    10    11    71 |

Table 5.1659.5   GPS week: 1659   Day: 5   MJD: 55862.0

CENT| CLK EPO  |        BRUS       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 2963 |     7     6    17 |     6    13    20 |     9    12    20 |
emr | emr 2972 |    13    12    33 |     8    10    24 |    12    15    22 |
esa | esa 2976 |    21    16    27 |     6     9    18 |     8    11    23 |
gfz | gfz 2972 |    22    17    27 |     8    10    21 |     7    10    21 |
grg | grg 2784 |     9    11    22 |     8     8    29 |    11    12    20 |
igr | igr 2959 |     8     6    18 |     7    10    21 |     7    11    21 |
igs | igs 2976 |    21    17    26 |     7    10    19 |     8    13    22 |
jpl | jpl 2780 |    31    18    39 |     7    10    22 |    13    15    20 |
mit | mit 2976 |    41    22    39 |     7     9    22 |     9    11    23 |

Table 5.1659.6   GPS week: 1659   Day: 6   MJD: 55863.0

CENT| CLK EPO  |        BRUS       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 2971 |     6     5    19 |     6     7    27 |  ----  ----  ---- |
emr | emr 2974 |     9     8    22 |     9     6    28 |    13    16    28 |
esa | esa 2976 |     7     7    23 |     5     6    22 |     8    11    26 |
gfz | gfz 2971 |     7     7    19 |     6     8    24 |  ----  ----  ---- |
grg | grg 2784 |    10     8    25 |     8     8    40 |  ----  ----  ---- |
igr | igr 2942 |     7     6    23 |     6     7    25 |  ----  ----  ---- |
igs | igs 2976 |     7     6    21 |     6     6    23 |     9    12    25 |
jpl | jpl 2782 |     9     7    18 |     5     6    26 |    11    15    27 |
mit | mit 2976 |    20    37    94 |     7     7    24 |  ----  ----  ---- |


Table 6: Earth Orientation Parameters weekly summary.                          
                                                                              
        Weekly mean and standard deviation of Centre ERP, ERP rates and       
        LOD differences with respect to IGS combined values. See Table 7 for  
        the daily summaries.                                                  
                                                                              
        Xpole,Xrt: x pole and x pole rate                          
        Ypole,Yrt: y pole and y pole rate                       
        LOD      : Length Of Day                                               
                                                                              
        AC LOD BIAS    : 21-day mean LOD bias with respect to Bulletin A     
        AC LOD BIAS RMS: RMS of AC LOD BIAS                              
                                                                              
        FLAG: "u" (used), "x" (excluded), "-" (no submission)                 
              for Xpole, Ypole, Xrt, Yrt and LOD                              

Table 6.1659   GPS week: 1659   MJD: 55857.500-55863.500

                                                         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 |      49      -9     -73     176     -7 |       2     14
            |      18      23      85      45      5 |       3
emr   uuuuu |      28      12     -35     -80     -8 |      49     51
            |      23      24      40     144      4 |       2
esa   uuuxu |     -36     -27     -17    -433    -11 |       5     17
            |      17      13      61      83      7 |       2
gfz   uuuuu |     -26      11     -47     -97     -1 |      -7     14
            |      15      26      70     116      3 |       2
grg   uuuxx |      78      -6      -5     240    -28 |     -45     75
            |      12      17      83     108     63 |       9
igr   xxxxx |      -8      25     -28     -56      2 |      -4     16
            |      17      18      56      53      7 |       3
irf   xxxxx |       2      21     -16     -63      0 |       0     14
            |      13       7      19      77      3 |       2
jpl   uuuuu |      71     -65      28     155    -16 |      48     50
            |      40      16      75      59      7 |       7
mit   uuuxu |     -27      11     -14    -372      4 |       2     13
            |      20      15      43     103      7 |       2
ngs   uuuuu |     -10      61      89       8      4 |       5     13
            |      15      36     106      74      5 |       2
sio   xuuuu |     204     -34    -268      49     -8 |       5     14
            |      37      20     100     122      5 |       3


Table 7.1659.0   GPS week: 1659   Day: 0   MJD: 55857.500

                                                         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 |      33     -11    -182     175    -15 |       7     17
emr   uuuuu |      22      55     -41    -100    -14 |      54     56
esa   uuuxu |     -22     -39     -61    -359     -4 |      10     21
gfz   uuuuu |      -7     -13       7      13      0 |      -5     16
grg   uuuxx |      58     -22      10     130     41 |     -40     70
igr   xxxxx |      13      54     -31      22      9 |      -7     18
irf   xxxxx |       9      16       5     -56     -5 |       1     16
jpl   uuuuu |      31     -58      71     271    -22 |      60     63
mit   uuuxu |      -5      32      -7    -383     -8 |       4     17
ngs   uuuuu |     -32      58      41    -137     10 |       4     14
sio   xxxxx |     200     -58    -165     163    -17 |      12     22

Table 7.1659.1   GPS week: 1659   Day: 1   MJD: 55858.500

                                                         AC LOD  AC LOD
CENT  FLAG  |   Xpole   Ypole     Xrt     Yrt    LOD |    BIAS  BIAS RMS
            |   [uas]   [uas]   [uas/d] [uas/d]  [us]|    [us]    [us]
------------+----------------------------------------+------------------
cod   xxxxx |      31     -17    -118     139     -9 |       3     15
emr   uuuuu |      10      15     -76    -148     -8 |      50     52
esa   uuuxu |     -27     -40      62    -533    -13 |       6     18
gfz   uuuuu |     -11      13      21     -45      1 |      -9     15
grg   uuuxx |      73      10    -115     113     33 |     -40     70
igr   xxxxx |     -33      28     -35     -44      6 |      -8     17
irf   xxxxx |      -8      10       2    -163     -1 |      -2     15
jpl   uuuuu |      30     -65      81     150    -22 |      53     56
mit   uuuxu |     -34      -4     -15    -422     -1 |       0     14
ngs   uuuuu |       6      74     -44      10      8 |       3     13
sio   xxxxx |     168     -66    -186     -74     -8 |       6     17

Table 7.1659.2   GPS week: 1659   Day: 2   MJD: 55859.500

                                                         AC LOD  AC LOD
CENT  FLAG  |   Xpole   Ypole     Xrt     Yrt    LOD |    BIAS  BIAS RMS
            |   [uas]   [uas]   [uas/d] [uas/d]  [us]|    [us]    [us]
------------+----------------------------------------+------------------
cod   xxxxx |      34     -41    -107     158     -4 |       2     14
emr   uuuuu |      48      10     -84      49    -11 |      49     51
esa   uuuxu |     -17     -31     -13    -325     -4 |       4     16
gfz   uuuuu |     -28     -11     -58    -136      4 |      -9     15
grg   uuuxx |      81       4      -3     135     31 |     -39     70
igr   xxxxx |     -14      27    -120     -85      9 |      -7     18
irf   xxxxx |      -2      22      -9     -85      4 |      -3     15
jpl   uuuuu |      64     -81     103     165    -19 |      49     50
mit   uuuxu |     -29       3     -26    -394      4 |      -1     13
ngs   uuuuu |     -26     113     157       2     -1 |       3     13
sio   xuuuu |     173     -30    -210      76     -1 |       4     14

Table 7.1659.3   GPS week: 1659   Day: 3   MJD: 55860.500

                                                         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 |      50      31      86     199     -3 |       1     14
emr   uuuuu |      63       8     -13     103    -10 |      48     50
esa   uuuxu |     -41     -21      -9    -529    -10 |       5     16
gfz   uuuuu |     -43     -15     -73    -294     -3 |      -8     14
grg   uuuxx |      90       2     -15     310    -43 |     -38     70
igr   xxxxx |     -18      25     -28    -121      6 |      -4     17
irf   xxxxx |      -4      19      -6     -84      1 |      -1     15
jpl   uuuuu |      63     -48    -100     144    -20 |      47     49
mit   uuuxu |     -46       2      74    -389      6 |       0     13
ngs   uuuuu |       4      70     100      60      6 |       4     14
sio   xxxxx |     181     -25    -301      88     -5 |       3     14

Table 7.1659.4   GPS week: 1659   Day: 4   MJD: 55861.500

                                                         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 |      66      -2    -103     110    -14 |       2     13
emr   uuuuu |      23       9     -21      26     -2 |      49     50
esa   uuuxu |     -60     -28    -109    -463    -24 |       5     16
gfz   uuuuu |     -43      36    -151    -189      1 |      -7     13
grg   uuuxx |      82     -23     125     351    -50 |     -45     75
igr   xxxxx |     -10      15     -22     -58     -3 |      -1     13
irf   xxxxx |     -14      18     -41    -119     -1 |       1     12
jpl   uuuuu |     145     -47     -47      98    -19 |      45     48
mit   uuuxu |     -56       4     -25    -504      8 |       3     11
ngs   uuuuu |      -3      40     283      83      5 |       6     13
sio   xxxxx |     201     -23    -408    -133     -6 |       5     12

Table 7.1659.5   GPS week: 1659   Day: 5   MJD: 55862.500

                                                         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 |      50       0     -42     205     -2 |       0     14
emr   uuuuu |      37     -29      32    -286     -3 |      48     49
esa   uuuxu |     -57      -2      55    -453    -15 |       3     17
gfz   uuuuu |     -15      18    -110     -56     -3 |      -6     12
grg   uuuxx |      92     -29      57     345   -110 |     -51     80
igr   xxxxx |      15      -7      73    -105     -9 |       0     13
irf   xxxxx |      25      25     -42      71      1 |       2     11
jpl   uuuuu |      64     -89      23     168     -5 |      41     44
mit   uuuxu |      -3       3     -58    -166     11 |       4     11
ngs   uuuuu |     -17      77      33      57     -1 |       7     13
sio   xxxxx |     269     -23    -395     203    -10 |       4     12

Table 7.1659.6   GPS week: 1659   Day: 6   MJD: 55863.500

                                                         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 |      77     -27     -48     245     -4 |      -1     12
emr   uuuuu |      -3      13     -46    -205     -8 |      46     47
esa   uuuxu |     -25     -28     -43    -370     -6 |       2     16
gfz   uuuuu |     -33      50      33      25     -3 |      -6     12
grg   uuuxx |      71      12     -97     294    -96 |     -62     92
igr   xxxxx |      -7      28     -32       0     -2 |      -1     12
irf   xxxxx |      10      32     -20      -7      2 |       2     12
jpl   uuuuu |     101     -66      67      92     -7 |      39     41
mit   uuuxu |     -17      33     -45    -349      9 |       5     13
ngs   uuuuu |      -1      -4      52     -18      0 |       7     13
sio   xxxxx |     238     -12    -214      17     -7 |       3     10



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