[IGSREPORT-20135] Wk 1651 IGS Final Orbits

Jim Ray igs.acc at noaa.gov
Thu Sep 15 09:03:51 PDT 2011


Author:  AC Coordinator / NOAA NGS

sum-file Version 2.0
Final IGS Orbit Combination - Week 1651   (Aug 28, 2011 - Sep 03, 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:

igs1651[0-6].sp3  IGS GPS ephemeris files in SP3 format.
igs1651[0-6].clk  IGS GPS satellite and station clocks in clock RINEX format.
igs1651[0-6].cls  IGS GPS clock combination summary report.
igs16517.erp      Earth Rotation Parameters (ERP) and their rates as well as
                  Universal Time (UT1-UTC) and Length Of Day (LOD) associated 
                  with IGS ephemerides.
igs16517.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   | HNPT SANT
                0  |  ESA   | 30 30 BAN2 KERG UNSA
                0  |  GFZ   | 7 30 BOR1 KARR MDVJ NRC1 PETS
                0  |  GRG   | USN3
                0  |  MIT   | 11 27 11 21 27 MAW1 BRUS MAW1
                1  |  ALL   | 30
                1  |  COD   | YELL WROC YELL
                1  |  EMR   | MCM4
                1  |  ESA   | IRKJ
                1  |  GFZ   | 25 GOLD MDVJ REUN
                1  |  GRG   | IRKJ NKLG SANT USN3
                1  |  JPL   | 27 IRKJ REUN
                1  |  MIT   | 1 27 30 1 27 DAV1 REUN DAV1 REUN
                2  |  ESA   | BAN2 UNSA
                2  |  GFZ   | 27 30 COCO STJO TIDB
                2  |  GRG   | CEDU USN3 WHIT
                2  |  JPL   | 27 ADIS
                2  |  MIT   | 1 5 27 30 1 5 27 30
                3  |  COD   | 21 USNO USNO
                3  |  ESA   | 17 22 30 30 KOSG MATE MDVJ BAN2 IRKJ
                3  |  GFZ   | 30 BRUS MDVJ
                3  |  GRG   | 6 IRKJ NKLG USN3
                3  |  JPL   | 8 IRKJ
                3  |  MIT   | 27 27
                4  |  ALL   | 13
                4  |  COD   | USN3 USNO WROC USN3 USNO WROC
                4  |  ESA   | 17 30 30 IRKJ
                4  |  GFZ   | 7 30 MDVJ OPMT VILL WILL WIND
                4  |  GRG   | IRKJ NKLG
                4  |  JPL   | IRKJ
                4  |  MIT   | 15 15 KHAJ KHAJ KOSG TLSE
                5  |  COD   | 8 9 NICO KOSG NICO WILL
                5  |  EMR   | 27 27
                5  |  ESA   | 9 17 30 9 30 KOSG NKLG
                5  |  GFZ   | 30 MDVJ REUN
                5  |  GRG   | IRKJ NKLG SANT USN3
                5  |  JPL   | 9 HARB IRKJ
                5  |  MIT   | 9 27 27 IRKJ KOSG
                6  |  COD   | NICO
                6  |  EMR   | 27 HARB
                6  |  ESA   | 30 30 REUN
                6  |  GFZ   | 30 COCO MDVJ WAB2 WSRT
                6  |  GRG   | AMC2 NKLG
                6  |  JPL   | 27 BAN2
                6  |  MIT   | 3 11 21 22 26 27 3 11 21 22 26 27 DAV1 DAV1 KOSG
                6  |  MIT   | MAC1 NICO

 5. The following table lists all maneuvered satellites for this week.
    The solutions from COD and ESA, which modeled the maneuver, are used
    that day for combination. An associated accuracy code of 0 (unknown) 
    is given if only one AC is left (no redundancy). For the long arc  
    evaluation the arc is split into two parts at the given maneuver epoch.
    
               PRN |    Date    | Ref. NANU
               ----+------------+----------
               G02 | 2011_08_31 | 2011072 
               G13 | 2011_09_01 | 2011069 

 6. 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
               ----+--------+---------------
                5  |  SIO   | ALL (high Transformation - See Table 2)
                6  |  SIO   | ALL (high Transformation - See Table 2)

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

 8. Small rotations were applied to all the AC orbit and ERP values in order
    to align them to the IGS05 frame. These rotations were estimated in the IGS
    SINEX combination process, performed by the IGS Reference Frame Coordinator
    at the Institut Geographique National (IGN), and are based on the common
    stations between the individual AC SINEX solutions and the IGS05.snx SINEX
    frame. The estimated 7 transformations, from which only the 3 rotations are
    applied to the orbit and ERP values, are:
    
            |    DX     DY     DZ      RX     RY     RZ     SCL
     Centre |   [mm]   [mm]   [mm]   [uas]  [uas]  [uas]   [ppb]
     -------+---------------------------------------------------
       COD  |     .4     .3     .6     -20    -10     13    -.01
       EMR  |    1.1    5.9    1.8      10    -18     -2     .18
       ESA  |    -.8    2.9   16.6      46     11     58    -.07
       GFZ  |    -.9     .8     .5     -27      7      0    -.12
       GRG  |     .7    1.9    7.3      -5     -6     17    -.17
       JPL  |   -3.0    1.8   -6.0     -15      5     33     .14
       MIT  |    2.6    -.7   14.4     -18     10    -19    -.02
       NGS  |    3.1     .3   10.7     -28     -3      6     .08
       SIO  |    3.4    1.1   -7.0      24   -133     27    -.07


 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 1.1651.a). It also displays the computed satellite
position sigmas for the combined orbits (table 1.1651.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 2.1651.[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 3.1651.[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 5.1651.0-6).

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 1651 summary.                       (Aug 28, 2011 - Sep 03, 2011)

Table 1.1651.a   GPS week: 1651   MJD: 55801.000-55807.000

         Mean and standard deviations of transformation parameters to the 
         combined IGS orbit.
         WRMS - orbit RMS weighted by the SP3 header accuracy codes.
         STA  - Mean number of stations in the daily solutions.
   
CENT STA|   DX    DY    DZ    RX    RY    RZ   SCL  RMS  WRMS|    TOFT   TDRFT   SDEV    RMS
        |  [mm]  [mm]  [mm] [uas] [uas] [uas] [ppb] [mm] [mm]|    [ps]  [ps/d]   [ps]   [ps]
--------+----------------------------------------------------+------------------------------
cod  254|    0     0     2     8    -5     4  -.28    7    7 |    -779     441     18     83
        |    0     0     0     9     9    14   .02           |     145     450
emr   94|    0     2     0    -6    30     6   .41   19   19 |    1640    -245     14    104
        |    0     1     1    19    24    18   .05           |    1644    1051
esa  135|    0     0     1   -97    32   -12   .26    8    8 |      83    -471     18    190
        |    0     1     1    20    13    11   .02           |    2262    2094
gfz  197|   -1     0    -3    34   -52     2  -.21   10    9 |     119    -496     22    101
        |    0     0     0    34    34    12   .01           |     530    1629
grg  130|    1     0     5   -13    11    27   .53   15   13 |     -45      72     41    216
        |    0     1     3    13    17    14   .03           |     218     550
igr  n/a|    0     0     0    -6    -7   -30  -.09    4    4 |    2105    -295     18     72
        |    0     0     0     8    12    13   .03           |    1614    1018
jpl  117|   -1     0    -6    10   -34    21   .54   14   14 |    1001    -341     18    104
        |    1     0     1    13    12    15   .04           |    1873    1077
mit  262|    1    -1     0     9   -23   -24  -.31   12   11 |    -362     299     22    181
        |    0     0     0    16    37    26   .02           |     209     415
ngs  221|    0     0     0    78    -8   -11  -.26    9    7 |    -752     367   2130   3729
        |    0     0     1    19    37     8   .03           |     205     539
sio  251|    1     2    -3   -73   289     1  -.22   24   21 |     ---     ---    ---    ---
        |    0     1     1    15    40    18   .02           |     ---     ---


Table 1.1651.b   GPS week : 1651   MJD: 55801.000-55807.000   

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



Table 2: Daily transformation of each centre to the combined IGS orbit and
         clocks for each day of the week. The transformation displayed is the
         sum of a priori and estimated transformations.
         WRMS - RMS weighted by the centres SP3 header accuracy codes.
         STA  - Number of stations in the daily solutions.
   
Table 2.1651.0   GPS week: 1651   Day: 0   MJD: 55801.000                            

CENT STA|   DX    DY    DZ    RX    RY    RZ   SCL  RMS  WRMS|    TOFT   TDRFT   SDEV    RMS
        |  [mm]  [mm]  [mm] [uas] [uas] [uas] [ppb] [mm] [mm]|    [ps]  [ps/d]   [ps]   [ps]
--------+----------------------------------------------------+------------------------------
cod  254|    0     0     2     0   -10    14  -.29    6    6 |    -769    -107     15     76
        |                     47    27                       |
emr   94|    0     2     1     6    -6   -18   .43   18   18 |    2767    -750     14    111
        |                    -71    20                       |
esa  135|    0     1     2  -122    44   -16   .24    7    7 |   -1188     313     18    169
        |                     42    16                       |
gfz  197|    0     0    -3   102    -5     1  -.22   10    9 |     494    -834     24    100
        |                    -27    21                       |
grg  130|    1     0     6    -7   -16    25   .54   15   13 |     185    -911     39    271
        |                     26    42                       |
igr  n/a|    0     0     0   -11   -18   -53  -.08    4    4 |    3321   -1089     18     86
        |                      5    25                       |
jpl  117|   -1     0    -7     0   -37    45   .58   13   13 |    2370   -1112     17    111
        |                      3    27                       |
mit  262|    0    -2     0    31    -8   -34  -.33   11   10 |    -620    -202     27    205
        |                      4     2                       |
ngs  221|    0    -1     0    42   -72   -22  -.26   11   11 |    -802    -108   2034   3332
        |                     -4    52                       |
sio  251|    0     2    -3   -47   294   -31  -.24   24   20 |     ---     ---    ---    ---
        |                     17  -167                       |

Table 2.1651.1   GPS week: 1651   Day: 1   MJD: 55802.000                            

CENT STA|   DX    DY    DZ    RX    RY    RZ   SCL  RMS  WRMS|    TOFT   TDRFT   SDEV    RMS
        |  [mm]  [mm]  [mm] [uas] [uas] [uas] [ppb] [mm] [mm]|    [ps]  [ps/d]   [ps]   [ps]
--------+----------------------------------------------------+------------------------------
cod  254|    0     0     3     0     9    -4  -.30    7    7 |    -687     130     25     76
        |                     -3   -58                       |
emr   94|    0     1     0    23    16    30   .39   19   19 |    2535     838     16     99
        |                    -76     6                       |
esa  135|    0     0     0   -79    50   -13   .29    7    7 |    1464    -843     20    174
        |                     48    12                       |
gfz  197|    0     0    -3    33   -55    11  -.22   10   11 |     190      -9     19     96
        |                      0     5                       |
grg  130|    2     0    11   -11    40    41   .57   15   13 |     -72     337     42    198
        |                     27   -68                       |
igr  n/a|    0     0     0     0   -10   -32  -.10    4    4 |    2899     895     18     62
        |                     -2    11                       |
jpl  117|   -3     0    -7    16    -6     8   .57   15   15 |    2036    1069     15     83
        |                    -25   -16                       |
mit  262|    0    -1     0   -12  -103   -36  -.32   12   12 |    -439     423     23    193
        |                      3    13                       |
ngs  221|    0     0    -1    86   -17   -12  -.24    9    7 |    -406    -370   1601   3125
        |                    -51    63                       |
sio  251|    0     0    -2   -94   212    -7  -.22   22   21 |     ---     ---    ---    ---
        |                     13  -165                       |

Table 2.1651.2   GPS week: 1651   Day: 2   MJD: 55803.000                            

CENT STA|   DX    DY    DZ    RX    RY    RZ   SCL  RMS  WRMS|    TOFT   TDRFT   SDEV    RMS
        |  [mm]  [mm]  [mm] [uas] [uas] [uas] [ppb] [mm] [mm]|    [ps]  [ps/d]   [ps]   [ps]
--------+----------------------------------------------------+------------------------------
cod  254|    0     0     2    -1    -4    -1  -.25    7    7 |    -649     172     22    108
        |                     34    12                       |
emr   94|   -1     4     0     0    10    -2   .47   19   19 |    2720     397     14    111
        |                    -57     9                       |
esa  135|    0     0     2  -123    21    -3   .27    9    8 |    1850   -1108     19    190
        |                     46     7                       |
gfz  197|   -1     0    -3    43   -31    13  -.19    9    8 |      49     -95     22     92
        |                      2    40                       |
grg  130|    1     2     8   -10    11    45   .56   16   15 |    -167     448     43    221
        |                     30   -15                       |
igr  n/a|    0     0     0   -15    -4   -26  -.10    4    4 |    3402      77     18     69
        |                     -8    30                       |
jpl  117|   -1    -1    -7     2   -37    22   .56   13   13 |    2913     -35     17     93
        |                    -19     5                       |
mit  262|    1    -1    -1    15    -8   -50  -.28   12   11 |     -54     163     21    176
        |                      8     3                       |
ngs  221|    0     0     1    91   -36     5  -.24    9    7 |    -667     177   2301   3893
        |                    -65    31                       |
sio  251|    0     2    -4   -68   294    19  -.21   23   23 |     ---     ---    ---    ---
        |                     20  -179                       |

Table 2.1651.3   GPS week: 1651   Day: 3   MJD: 55804.000                            

CENT STA|   DX    DY    DZ    RX    RY    RZ   SCL  RMS  WRMS|    TOFT   TDRFT   SDEV    RMS
        |  [mm]  [mm]  [mm] [uas] [uas] [uas] [ppb] [mm] [mm]|    [ps]  [ps/d]   [ps]   [ps]
--------+----------------------------------------------------+------------------------------
cod  254|    0     0     1    17     5    21  -.30    8    8 |    -649     763     18     79
        |                     -3   -17                       |
emr   94|    1     4     1   -22    34    11   .36   19   19 |    2469     673     13     98
        |                    -24   -14                       |
esa  135|   -1     0     0   -84    22    -5   .27    8    8 |   -2837    2463     19    220
        |                     30     7                       |
gfz  197|    0     0    -4    36   -68   -14  -.22   10    9 |    -260     709     22    102
        |                     12    36                       |
grg  130|    1    -1     5   -29    16    20   .54   14   13 |     -56     771     34    218
        |                     58   -37                       |
igr  n/a|    0     0     0     3   -12   -30  -.13    4    4 |    2682     775     18     68
        |                    -13    19                       |
jpl  117|    0     0    -5     3   -32    12   .51   14   13 |    1470     687     18    102
        |                     23   -31                       |
mit  262|    2    -2     0    -1   -26   -47  -.30   13   12 |    -585    1103     19    162
        |                     18     1                       |
ngs  221|    0     0     0    93     3   -12  -.25   10    8 |    -677     764   2345   4059
        |                    -68    40                       |
sio  251|    0     0    -2   -75   277    16  -.26   23   23 |     ---     ---    ---    ---
        |                     19  -165                       |

Table 2.1651.4   GPS week: 1651   Day: 4   MJD: 55805.000                            

CENT STA|   DX    DY    DZ    RX    RY    RZ   SCL  RMS  WRMS|    TOFT   TDRFT   SDEV    RMS
        |  [mm]  [mm]  [mm] [uas] [uas] [uas] [ppb] [mm] [mm]|    [ps]  [ps/d]   [ps]   [ps]
--------+----------------------------------------------------+------------------------------
cod  254|    0     0     1    20   -16   -13  -.28    7    7 |   -1003    1223     17     76
        |                     26    13                       |
emr   94|    1     1    -2   -38    60    31   .35   18   18 |    2381   -1947     15    116
        |                    -12   -17                       |
esa  135|    0     0     1  -101    33   -21   .27    7    7 |    3556   -4119     18    195
        |                     51     3                       |
gfz  197|   -2     2    -1    20  -114    17  -.22    9    8 |     986   -3990     22     99
        |                    -18    70                       |
grg  130|    2     0     4    -1    -2    24   .48   14   14 |     278    -187     38    202
        |                     55    -8                       |
igr  n/a|    0    -1     0     1    17   -35  -.12    4    4 |    2786   -1840     18     73
        |                      3    33                       |
jpl  117|    0     0    -7     0   -36    22   .48   15   14 |    1366   -1925     19    104
        |                     21    16                       |
mit  262|    2    -2     0    27   -24   -18  -.29   13   12 |    -194     177     22    163
        |                     10    -4                       |
ngs  221|    0    -1     0    92    30    -9  -.23    9    7 |   -1028    1224   2510   4357
        |                    -75   -57                       |
sio  251|    2     1    -2   -69   281    19  -.22   23   22 |     ---     ---    ---    ---
        |                     26  -156                       |

Table 2.1651.5   GPS week: 1651   Day: 5   MJD: 55806.000                            

CENT STA|   DX    DY    DZ    RX    RY    RZ   SCL  RMS  WRMS|    TOFT   TDRFT   SDEV    RMS
        |  [mm]  [mm]  [mm] [uas] [uas] [uas] [ppb] [mm] [mm]|    [ps]  [ps/d]   [ps]   [ps]
--------+----------------------------------------------------+------------------------------
cod  254|    0     0     0     7   -11    21  -.26    7    7 |    -962     583     17     87
        |                     25    42                       |
emr   94|    1     0    -1    -7    56    -1   .40   20   20 |     -40   -1159     13    106
        |                    -37   -13                       |
esa  135|    0     0     2   -69    41   -32   .27    8    8 |   -1648    1184     16    200
        |                      6    27                       |
gfz  197|   -1     1    -3    -7   -56    -3  -.19   11   12 |    -682     731     23    106
        |                    -26    69                       |
grg  130|    2     1     3   -32    13     2   .50   14   13 |    -374     223     45    205
        |                     65    -7                       |
igr  n/a|    0     0     0    -6   -16   -30  -.08    5    5 |     382    -925     18     80
        |                      5    39                       |
jpl  117|    0     0    -4    16   -43    37   .48   15   14 |    -916   -1105     21    123
        |                     24    26                       |
mit  262|    2    -1     0    -5     8    -8  -.30   12   11 |    -410     407     20    174
        |                     19    -9                       |
ngs  221|    0     0     0    82     0   -12  -.28    8    6 |    -956     578   1961   3820
        |                    -40   -16                       |
sio  251|    2     4    -3   -88   323    -6  -.20   24   19 |     ---     ---    ---    ---
        |                     21  -168                       |

Table 2.1651.6   GPS week: 1651   Day: 6   MJD: 55807.000                            

CENT STA|   DX    DY    DZ    RX    RY    RZ   SCL  RMS  WRMS|    TOFT   TDRFT   SDEV    RMS
        |  [mm]  [mm]  [mm] [uas] [uas] [uas] [ppb] [mm] [mm]|    [ps]  [ps/d]   [ps]   [ps]
--------+----------------------------------------------------+------------------------------
cod  254|    0     0     2    15   -12    -7  -.25    9    7 |    -737     327     16     83
        |                     19    41                       |
emr   94|    0     1    -2    -9    40    -6   .46   20   20 |   -1349     229     15     89
        |                    -58     3                       |
esa  135|   -1    -1     3  -101    14     3   .22    8    8 |    -611   -1191     20    184
        |                     35    27                       |
gfz  197|   -1     1    -2    10   -38    -8  -.21   10    9 |      58      12     25    113
        |                    -31    64                       |
grg  130|    1     0     0     2    15    29   .55   15   12 |    -110    -175     51    200
        |                     21    -2                       |
igr  n/a|    0     0     1   -16    -9    -7  -.04    5    5 |    -737      36     19     69
        |                      7    54                       |
jpl  117|   -1     0    -6    37   -45     2   .57   15   14 |   -2229      30     20    115
        |                    -16    67                       |
mit  262|    2    -1     0     9    -2    26  -.34   10    9 |    -234      24     26    196
        |                      6     3                       |
ngs  221|    0     0     2    59    31   -18  -.31    9    7 |    -730     306   2160   3521
        |                     -4   -38                       |
sio  251|    1     4    -2   -65   338     3  -.20   25   21 |     ---     ---    ---    ---
        |                     11  -162                       |

       
       
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 3.1651.0   GPS week: 1651   Day: 0   MJD: 55801.000                            

        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  |   35  ---   49  ---  ---   19  ---   27  ---  ---   27 |    32  ---   38  ---  ---   32  ---   26  ---  ---    40
   2  |    5   19   10    7   16    4   12   10   10   18    3 |     8   19   18   11   10    9   14    9   11   11    10
   3  |    6   15    8    9   11    4   15    7   12   20    3 |    14   26   18   14   18   15   26   11   16   26    15
   4  |    7   15    8    7    6    4    8    7   10   27    3 |    28   36   32   28   31   28   34   27   30   27    29
   5  |    7   15    5    8   10    4   15   13   11   24    3 |    23   33   32   27   37   27   35   28   28   29    28
   6  |    5   15    9    7   12    4   15   11   11   16    3 |    12   25   19   12   20   14   26   11   14   22    14
   7  |    5   18    8    9   16    5   17   11   11   16    4 |     9   24   16   16   23   11   23   12   16   12    12
   8  |    9   14    8    9    9    5    9   10   10   26    3 |    25   33   28   26   26   25   33   23   26   22    25
   9  |    8   21    6    8   14    4   12   15   13   26    4 |    47   58   49   49   48   49   53   51   52   66    50
  10  |    7   12    6    8   10    6    8    5   10   23    3 |    23   32   30   28   35   27   33   28   26   27    28
  11  |    7   16    5    6   19    4   10    9   10   16    3 |    28   36   29   26   36   27   32   27   26   30    27
  12  |    7   22    7   11   17    5   14   16   15   28    4 |    17   30   17   20   22   17   26   25   21   27    17
  13  |    5   17    7    8   22    4   10    7   13   15    3 |    10   23   14   13   27   11   18   10   14   12    12
  14  |    5   18    8    7   17    4   14   10   10   16    3 |    16   26   21   18   27   15   25   17   19   19    16
  15  |    8   26    8    8   16    4   19   17   10   24    4 |    30   38   32   31   38   31   38   37   30   36    31
  16  |    7   21   11   16   16    6   16    9   11   45    5 |    18   34   24   20   24   17   28   20   19   36    18
  17  |    6   19    6    7   16    2   16   10    8   18    3 |    17   35   25   18   31   21   33   22   24   23    22
  18  |    6   15   10   10   11    4   14   10   10   26    4 |    20   29   24   21   23   21   28   25   20   21    21
  19  |    6   22    5    7   20    3   11   10   12   17    4 |    21   31   19   18   26   19   22   19   22   25    18
  20  |    7   11    8    9   12    4   11    7   11   25    3 |    20   25   25   24   28   19   24   19   22   22    21
  21  |    5   26    7    8   17    4   17   10   11   14    4 |    19   39   21   17   30   19   33   20   20   23    21
  22  |    4   11    7    8    8    4   12   13   13   29    3 |    24   33   28   22   32   24   30   29   25   26    25
  23  |    5   19    5    9   18    4   15    9   15   18    4 |    15   29   18   18   24   16   28   17   20   15    16
  24  |    6   10    7    7   13    3   10   13   12   31    3 |    14   19   14   18   15   13   14   17   21   17    13
  25  |    5   11    6   16   14    4   13   10   12   19    4 |    13   22   17   21   25   16   28   21   18   18    17
  26  |    5   16    7    9   12    4   10    9    9   30    3 |    16   30   21   16   26   20   28   19   22   35    20
 X27  |   11   19   10    9   17    4  ---   15  ---  ---    5 |    53   63   58   56   58   56  ---   59  ---  ---    56
  28  |    7   21    8   20   12    5   11    9   11   43    5 |    19   37   28   31   28   22   33   25   22   39    24
  29  |    6   21    8   12   16    4   18    9   11   13    4 |    22   32   18   19   21   19   26   24   21   25    19
 X30  |    7  ---    7   10   13    6  ---   10  ---  ---    4 |    12  ---   13   15   13   12  ---   14  ---  ---    11
  31  |    7   18    9    7   23    4   16   10   11   14    4 |    15   23   20   13   31   13   23   12   15   15    14
  32  |    7   12    6    6   12    2    8   12    9   18    3 |    12   20   16   14   20   14   17   13   15   16    13
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |    6   18    7   10   15    4   13   11   11   24      |T   20   31   24   21   27   21   27   22   21   24    21
 WRMS |    6   18    7    9   13    4   13   10   11   20      |NE  18   29   22   19   25   18   26   20   20   23    19
 MEDI |    6   17    7    8   14    4   13   10   11   20      |MD  18   30   21   19   26   19   28   20   21   23    19

Table 3.1651.1   GPS week: 1651   Day: 1   MJD: 55802.000                            

        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  |   18  ---   18  ---  ---   21  ---   27  ---  ---   14 |    30  ---   29  ---  ---   29  ---   29  ---  ---    26
   2  |    7   19    8    6   18    3   15   10   10   20    4 |    10   19   15   11    9   11   14   16   11   16    12
   3  |    5   15    6    7   11    3   13   10    7   20    3 |    13   23   22   14   23   15   26   13   17   26    16
   4  |    6   14    7    7   10    4   14   11   13   24    3 |    25   32   28   26   30   25   29   26   28   29    26
   5  |    5   14    5    6   10    2   16   11    8   25    3 |    26   35   32   27   35   28   36   31   27   31    29
   6  |    7   16    6    8   10    3   14   12    8   15    3 |    11   24   22   16   23   14   27   13   18   21    16
   7  |    6   20    6    7   18    2   15   10   10   14    3 |     7   23   16   15   26   11   20   15   17   12    12
   8  |    9   17    8    6   11    3   10   12    8   19    3 |    29   38   33   29   31   29   33   33   31   33    30
   9  |   10   22    7    9   15    4   13   17    9   22    4 |    39   48   42   38   40   37   45   39   38   46    38
  10  |    6   13    5    6   11    4   10    8    9   24    3 |    22   25   28   22   27   24   24   25   26   26    23
  11  |    6   17    7    6   19    5   11   16    6   16    3 |    12   23   16   12   24   12   18   15   12   17    12
  12  |    7   22   10   11   15    3   15   19   10   27    4 |    14   25   17   18   20   13   25   23   18   24    14
  13  |    6   19    8    6   19    3    9    8   10   14    3 |     9   23   17   12   27   10   19   12   15   12    11
  14  |    7   21    6   10   15    5   16   10    8   15    4 |    19   31   25   19   27   20   27   23   19   23    20
  15  |    6   26    9    8   16    4   20   15   11   21    4 |    42   51   46   43   47   43   50   49   43   47    44
  16  |    9   25    9   15   18    3   17    8   10   42    5 |    15   34   23   21   26   17   27   19   20   33    18
  17  |    6   25    6    9   18    4   17    9    7   18    4 |    15   35   22   16   32   17   29   19   17   19    18
  18  |    7   15    6    9   12    3   15   12    7   24    3 |    17   27   22   20   19   19   26   21   20   22    18
  19  |    6   23    5    9   17    2   16   11    7   12    4 |    16   30   20   15   28   17   24   14   20   18    17
  20  |    8   13    6   10   12    4   15   10    8   21    3 |    14   21   22   19   21   15   23   14   16   17    16
  21  |    6   21    6    9   16    4   15   10    7   15    3 |    15   28   21   19   28   17   24   17   18   18    17
  22  |    6   14    6    8    8    3   14   17    5   26    3 |    20   29   26   20   28   22   31   29   22   25    22
  23  |    4   25    8    7   15    4   14   10    9   16    3 |    13   26   20   14   23   14   22   18   15   14    14
  24  |    6   12    6    7   13    4   12   14    8   29    3 |    12   16   16   15   14   11   14   17   14   17    11
  25  |    8   11    8   29   15    6   14   16   12   21    5 |    13   22   20   30   24   15   29   19   19   19    16
  26  |    7   17    5    6   12    4   11   14    8   26    3 |    13   29   19   16   22   16   27   22   17   34    17
 X27  |   15   24   12   14   18    7   16   16  ---  ---    6 |    39   55   47   38   43   44   57   48  ---  ---    43
  28  |    9   22   11    9   14    4   14    9    7   42    4 |    16   35   27   24   28   19   31   21   21   36    20
  29  |    9   27    9   13   16    4   20   13    9   14    4 |    19   32   18   20   19   16   27   22   16   21    16
 X30  |   13  ---   12   14   12    6  ---   14  ---  ---    6 |    13  ---   22   18   15   13  ---   18  ---  ---    14
  31  |    8   24    7    9   23    3   16   11    8   14    4 |    12   26   19   15   32   14   25   17   17   19    14
  32  |    9   15    4    9   11    5   14   12    8   19    3 |     7   14   16   13   15   10   15    9   13   15    10
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |    7   19    7   10   15    4   15   12    9   22      |T   18   29   24   20   26   19   27   22   20   23    19
 WRMS |    7   19    7   11   13    4   14   12    7   21      |NE  16   27   22   19   24   18   26   20   19   23    18
 MEDI |    7   19    7    9   15    4   14   11    8   20      |MD  15   27   22   19   26   16   26   19   18   21    17

Table 3.1651.2   GPS week: 1651   Day: 2   MJD: 55803.000                            

        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  |   23  ---   28  ---  ---   11  ---   17  ---  ---   17 |    34  ---   27  ---  ---   29  ---   28  ---  ---    39
  X2  |    8  ---   10    7  ---    6  ---   11  ---  ---    5 |     8  ---   15    9  ---    8  ---   14  ---  ---     9
   3  |    6   17   11    7   12    5   11   13    7   20    3 |    14   25   21   14   21   14   24   13   16   25    15
   4  |    8   13    9    9   12    6   10   10    9   23    3 |    12   19   15   15   17   12   20   18   18   21    14
   5  |    6   14    9    6   15    4   14   13    8   24    4 |    27   34   35   30   34   29   35   33   28   31    29
   6  |    5   15    9    9   12    4   12   15    9   15    3 |    12   22   19   12   20   13   25   16   17   24    14
   7  |    6   24    8    7   17    4   20   11    9   16    4 |    10   25   16   14   24   11   24   16   18   14    13
   8  |    6   17    7    7   12    4    9   12    9   20    3 |    16   26   15   15   17   15   23   22   20   24    16
   9  |    8   17    5    9   13    4   14   16   14   18    4 |    26   33   28   25   32   24   35   28   19   35    25
  10  |    7   11   11    6   15    4   12    9   11   22    3 |    17   20   20   16   28   16   24   21   17   24    18
  11  |    7   14    7    7   25    4   10   10   11   19    4 |    16   22   19   15   30   16   20   18   18   20    16
  12  |    6   25    9   11   16    3   16   16   12   28    5 |    17   32   18   20   19   18   29   21   19   24    17
  13  |    7   19   10    7   20    3   11   12    8   16    4 |    11   24   12   11   26    9   19   13   13   13    11
  14  |    8   20   10    8   16    5   15   10   12   17    4 |    13   29   18   13   24   13   25   17   14   18    14
  15  |   10   28    7    8   16    6   18   17   10   23    5 |    28   42   30   30   31   29   39   30   30   27    29
  16  |    8   23   12   10   18    5   14   12    7   43    5 |    17   32   22   19   23   16   27   20   17   39    17
  17  |    8   19    9    6   18    4   15    6    8   20    4 |    15   28   25   16   26   16   26   17   19   20    17
  18  |    7   16    6    9   12    5   14   12    9   27    4 |    13   24   19   17   17   15   23   19   20   15    15
  19  |    6   21    9    8   19    5   10   10   10   14    4 |    16   31   18   14   29   16   23   13   20   18    16
  20  |    8   12    6   10   13    4   11    6    7   19    3 |    13   22   22   20   23   15   20   16   17   15    16
  21  |    4   20    7    8   18    4   14    8    6   18    3 |    16   26   19   19   26   14   25   18   16   18    16
  22  |    7   12    4    8   10    4   12   11    7   26    3 |    16   25   19   18   23   17   26   23   21   19    18
  23  |    7   25   11    8   16    3   14   12    8   18    4 |    13   29   15   14   22   12   24   16   19   14    13
  24  |    8   17    8    6   16    3   10   10    8   30    4 |    12   19   13   14   16   10   11   17   15   17    10
  25  |    6   12   11   15   13    4   14   14   12   23    4 |    18   27   23   26   24   18   29   23   22   17    20
  26  |    4   16    6    8   11    4    8   13    8   29    3 |    12   21   17   15   21   14   24   22   18   32    16
 X27  |   10   16   19   11   14    6   23   19  ---  ---    6 |    67   83   72   76   75   73   63   78  ---  ---    74
  28  |    8   23    9    8   14    5   12    8    6   44    4 |    20   35   24   22   29   19   32   22   24   40    22
  29  |    7   22   11   12   17    4   17   13    9   19    4 |    23   32   19   23   21   19   27   23   23   23    19
 X30  |   10  ---   11   17   15   11  ---   15  ---  ---    7 |    20  ---   18   24   19   17  ---   21  ---  ---    18
  31  |    7   22    9    8   23    4   18    9   10   16    4 |    15   27   20   15   33   12   25   19   23   19    17
  32  |    7   14    4   10   12    5   12   10    5   19    3 |     8   14   13   12   16   10   14   12   12   18    10
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |    7   19    9    9   16    4   13   12    9   23      |T   17   28   21   19   25   17   26   21   19   22    19
 WRMS |    7   19    8    8   15    4   13   11    6   23      |NE  16   26   19   17   23   15   24   19   19   21    17
 MEDI |    7   17    9    8   15    4   14   12    9   20      |MD  16   26   19   16   23   15   25   19   18   20    16

Table 3.1651.3   GPS week: 1651   Day: 3   MJD: 55804.000                            

        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  |    5  ---  ---  ---  ---   56  ---  ---  ---  ---    0 |    88  ---  ---  ---  ---   55  ---  ---  ---  ---    87
  X2  |    5  ---  ---  ---  ---   27  ---  ---  ---  ---    0 |    13  ---  ---  ---  ---   18  ---  ---  ---  ---    14
   3  |    7   15    8    9    8    4   13   15    8   19    3 |    16   24   17   14   21   14   25   17   17   25    16
   4  |    8   14    8    6    9    4    9   10   10   19    3 |    28   34   29   30   26   28   31   30   29   26    28
   5  |    6   20    8    7   12    4   14   13   12   27    4 |    16   28   23   21   27   20   28   22   20   20    19
   6  |    7   17    7    7    7    4   11   16    9   16    3 |    15   26   19   15   21   14   26   18   16   23    16
   7  |    6   21    9   10   18    3   20   12   11   16    4 |    12   24   18   17   24   14   24   18   17   14    13
   8  |    9   14    7    9    9    3   10   12    8   15    3 |    31   34   30   35   29   31   34   35   28   31    30
   9  |   10   20    9    7   13    5   15   17   11   20    4 |    42   51   43   40   42   41   50   44   44   51    43
  10  |    8   13    9    5   12    4    8    9   12   23    3 |    25   28   28   27   30   25   28   25   26   27    25
  11E |    7   15    8    9   17    3   11   13    8   18    4 |    27   34   28   28   35   27   32   31   30   32    28
  12  |    9   20   12   10   12    6   15   13   12   27    4 |    18   28   21   22   24   17   31   20   22   24    19
  13  |    5   21    9    8   20    3   12   12   10   13    4 |    10   23   15   14   30    8   20   12    9   11    10
  14  |    8   21    6   10   15    5   16   11   11   17    4 |    17   31   20   21   28   16   30   19   21   21    19
  15  |   11   24   10    9   17    4   17   24   11   33    5 |    57   65   58   64   63   59   66   67   61   70    60
  16  |    8   23   10   10   14    4   16   11    9   42    5 |    21   33   23   20   27   19   30   22   24   35    20
  17  |    7   23    8    7   16    4   15    9    8   19    4 |    13   32   23   18   27   19   28   17   21   21    18
  18  |    8   18    8    9    9    3   14   15    8   27    4 |    20   30   21   21   23   19   27   25   20   22    20
  19  |    6   21    8    7   15    5   13   11    6   13    3 |    18   31   17   12   25   14   23   15   19   20    17
  20  |    8   12    6    8   13    3   11    9   11   18    3 |    16   23   22   19   24   16   21   17   21   14    18
  21  |    8   23   13   11   14    3   11   11   10   19    4 |    22   34   27   22   32   22   27   22   28   22    23
  22  |    7   15    6    7    7    3   13   14    6   26    3 |    23   32   25   20   31   23   29   28   24   24    24
  23  |    5   25    7   10   15    3   17   14   10   16    4 |    16   30   19   18   25   15   27   19   13   16    16
  24  |    8   17    6    6   13    4   13   12    8   31    4 |    15   22   16   17   18   14   17   20   18   19    14
  25  |    9   13   12   26   12    5   16   13   14   24    5 |    19   25   22   31   27   20   33   23   27   19    21
  26  |    8   14    7    8   11    4    9   16    8   28    4 |    14   24   19   17   20   17   27   21   18   34    17
 X27  |   18   17   14   15   17   14   21   26  ---  ---    7 |   117  116  111  109  112  113  118  108  ---  ---   113
  28  |    8   21    7   13   13    4   13   10    8   42    4 |    19   32   25   29   29   22   31   24   22   38    22
  29  |    8   24   11   13   17    5   18   14   11   16    5 |    22   34   20   24   19   19   27   25   23   25    19
 X30  |   11  ---    9    9   12    3  ---   17   12   19    5 |    18  ---   21   22   24   19  ---   23   18   13    19
  31  |    7   19    6    9   20    5   18   11   10   14    4 |    15   27   19   19   33   15   27   19   16   19    17
  32  |    8   13    5    7   13    3   12   10    9   21    3 |    11   15   14   13   20   11   17   15   12   17    12
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |    8   19    8   10   14    4   14   13   10   23      |T   25   33   26   25   30   24   32   26   22   25    26
 WRMS |    8   19    8    9   13    4   13   12    8   23      |NE  21   29   22   22   26   20   28   22   21   24    22
 MEDI |    8   19    8    9   13    4   13   12   10   19      |MD  18   30   21   21   27   19   28   22   21   22    19

Table 3.1651.4   GPS week: 1651   Day: 4   MJD: 55805.000                            

        Weighted Average                                            Orbit Dynamics (7 days)
 PRN  |  cod  emr  esa  gfz  grg  igr  jpl  mit  ngs  sio  IGS |   cod  emr  esa  gfz  grg  igr  jpl  mit  ngs  sio   IGS
------+--------------------------------------------------------+---------------------------------------------------------
   2  |    6   21    7    8   18    4   14   13    9   26    4 |    13   22   13   14   15   18   18   13    9   21    14
   3  |    7   16    5    7   10    4   12   18    7   17    3 |    15   23   18   16   20   17   25   19   15   25    16
   4  |    8   19    6    8   10    5   12    8   13   12    3 |    24   33   28   30   28   27   30   26   23   28    25
   5  |    6   14    6    8   11    4   14   13    8   23    3 |    21   29   25   23   28   20   30   27   17   23    22
   6  |    7   16    6    7   10    4   11   16    9   15    3 |    14   25   20   16   22   17   25   17   17   24    16
   7  |    6   18    7   12   20    4   21   14    8   16    4 |    14   23   16   20   25   16   25   21   19   20    15
   8  |    7   14    5    6   10    4   11   13   11   15    3 |    27   31   29   25   27   26   33   27   28   29    26
   9  |    9   18    9   10   13    4   23   16   10   26    4 |    28   33   29   32   31   26   38   32   33   34    29
  10  |    6   12    5    8   10    3   10    9   10   24    3 |    16   23   23   22   25   19   24   20   22   25    20
  11E |    8   20    5   10    8    3   12   13    9   19    3 |    25   36   34   34   32   31   33   32   30   35    30
  12  |    7   21    7    9   14    6   15    9    7   27    4 |    16   31   18   24   23   17   28   18   19   26    17
 X13  |    6  ---  ---    8  ---   97  ---  ---  ---  ---    7 |    21  ---  ---   20  ---  166  ---  ---  ---  ---    18
  14  |    6   22    7    9   14    4   19   12   13   16    4 |    16   29   22   20   27   17   28   20   21   20    18
  15  |    8   22    8   10   14    6   15   14    8   18    4 |    29   38   31   38   37   30   37   33   32   30    31
  16  |    8   24    9   12   16    4   16   13    8   42    5 |    18   33   21   18   26   18   27   16   20   32    17
  17  |    6   18    5   11   18    4   13    9    6   16    3 |    13   26   17   13   27   14   22   12   15   17    14
  18  |    7   15    9   10   11    4   14   18    9   30    4 |    16   24   21   22   19   16   21   24   17   23    16
  19  |    6   23    7    8   17    3   13   12    8   13    3 |    17   29   18   17   27   19   21   17   20   20    17
  20  |    9   13    8    8   10    4   14    8    7   17    3 |    19   25   24   21   24   19   24   20   20   19    20
  21  |    8   22    8   10   17    5   15   14   10   18    4 |    14   30   20   16   25   16   25   16   22   16    16
  22  |    6   15    6    8    8    3   16   14    8   26    3 |    19   27   23   22   27   20   28   24   19   24    20
  23  |    7   24    8    9   16    4   18   13   10   17    4 |    19   30   22   19   24   19   30   22   23   20    19
  24  |    7   14    6    6   11    5   10   17    7   33    4 |    19   23   19   22   18   18   18   29   20   24    19
  25  |    8   13    5    7   15    4   17   10   10   19    3 |    18   27   21   25   29   18   31   21   22   17    20
  26  |    7   17    7    7   13    5    8   13    7   25    3 |    13   27   21   18   23   15   23   19   19   32    17
 X27E |   17   20   18   19   15   12   20   23  ---  ---    7 |    84   88   75   89   91   85   67   86  ---  ---    83
  28  |    6   19   10   12   15    4   13    9    7   43    4 |    15   30   27   24   26   18   28   20   19   38    19
  29  |    7   18    7    9   17    4   13   12    6   14    3 |    23   28   16   24   18   20   23   24   18   26    18
 X30  |   10  ---    6   10   14    5  ---   13    8   18    4 |    15  ---   17   21   18   14  ---   16   15   14    13
  31  |    8   22    7    7   20    4   17   12   11   18    4 |    13   23   19   16   31   14   23   16   22   20    15
  32  |    9   14    4    7   10    4   13    7    5   18    3 |    11   18   17   17   19   14   15   15   16   19    14
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |    7   18    7    9   14    4   15   13    9   23      |T   20   29   23   23   27   25   27   23   20   24    21
 WRMS |    7   18    7    8   14    4   14   12    7   22      |NE  17   27   20   20   24   23   25   20   19   23    18
 MEDI |    7   18    7    8   14    4   14   13    8   18      |MD  17   28   21   21   25   18   25   20   20   24    18

Table 3.1651.5   GPS week: 1651   Day: 5   MJD: 55806.000                            

        Weighted Average                                            Orbit Dynamics (7 days)
 PRN  |  cod  emr  esa  gfz  grg  igr  jpl  mit  ngs  sio  IGS |   cod  emr  esa  gfz  grg  igr  jpl  mit  ngs  sio   IGS
------+--------------------------------------------------------+---------------------------------------------------------
   2  |    6   22    9   11   20    6   17    7    9   20    4 |    16   27   16   19   10   17   21   14   14   17    16
   3  |    5   17    8    7   11    6   10   16    4   20    3 |    16   25   20   14   24   15   27   22   17   28    18
   4  |   10   14    6    9   12    6   11    9    8   17    3 |    37   37   35   37   37   36   38   36   35   39    34
   5  |    5   16    6    8    8    3   15   11    7   23    3 |    14   27   20   19   25   16   28   20   17   17    17
   6  |    5   20    7   10   11    5   11   14    7   17    3 |    14   25   18   15   22   14   26   20   16   25    16
   7  |    6   23    8   11   18    5   19   13    7   13    4 |    11   24   14   16   22   13   23   20   18   14    13
   8  |    9   16    6   11   10    6   10   14   10   18    4 |    41   41   40   37   40   38   42   37   38   41    38
   9  |    9   25    8   13   13    6   23   15    7   34    5 |    36   47   37   40   40   35   44   37   36   42    36
  10  |    6   14    7    7   13    5   10    8    8   25    3 |    18   21   20   20   25   19   22   21   20   28    19
  11E |    5   16    8   10   10    5   13   14   10   22    3 |    29   34   31   33   33   29   30   36   28   36    29
  12  |    7   22    8   12   16    4   15   11   11   29    4 |    20   31   24   23   24   19   28   24   22   23    21
 X13  |    8  ---    8  ---  ---    4  ---   15    8   12    5 |    12  ---   13  ---  ---   29  ---   15   15   11    13
  14  |    5   21    5   12   16    5   16   13    6   15    4 |    17   27   20   20   27   17   26   21   18   18    17
  15  |    6   26   11   11   16    4   17   14    7   19    4 |    29   38   32   29   32   29   33   34   29   31    30
  16  |    8   23   10   10   15    5   16   10    5   45    4 |    16   30   17   19   22   15   28   18   18   35    16
  17  |    6   20    8   11   17    5   16   10   10   16    4 |    17   27   16   15   27   16   26   16   20   19    17
  18  |    5   18    9   10    9    4   14   15    6   32    3 |    17   24   19   20   18   17   24   24   19   23    17
  19  |    5   22   10   10   16    5   15   14    7   16    4 |    16   29   20   14   27   16   25   21   17   21    17
  20  |    7   14    8    8   13    4   15    9   10   18    3 |    14   20   17   18   20   15   20   20   18   16    16
  21  |    7   25    6   14   17    4   12   11    7   18    4 |    20   33   23   21   28   20   25   24   23   19    21
  22  |    6   17    6   10    8    4   15   13    5   31    3 |    19   27   21   19   26   19   27   24   20   20    19
  23  |    7   23    9   11   16    4   17   15    6   17    4 |    17   29   19   20   23   15   29   21   15   15    17
  24  |    8   14    9    8   11    5   12   18   11   32    4 |    17   21   18   22   18   15   19   31   19   22    17
  25  |    6   13    8   24   14    4   18    9    9   23    4 |    18   24   20   30   27   18   28   25   21   19    20
  26  |    7   15    8   11   10    6    9   12   10   26    3 |    16   25   19   17   20   16   23   22   18   32    17
 X27E |   20   29   15   17   21   21  ---   20  ---  ---    8 |    54   72   60   70   63   67  ---   68  ---  ---    60
  28  |    6   21    8   14   13    5   15   11    8   44    4 |    17   29   19   24   26   17   28   19   21   38    18
  29  |    7   23    6   12   17    3   15   12    9   14    4 |    21   30   19   23   20   20   27   27   21   24    19
 X30  |   10  ---    7   13   14    3  ---   11    6   19    4 |    17  ---   15   21   20   17  ---   23   17   15    17
  31  |    8   23    9   12   19    5   17   12   10   14    4 |    16   27   18   18   31   15   27   18   21   17    16
  32  |    7   15    8    7   12    4   14   11    7   18    3 |    12   16   14   12   16   12   18   19   13   15    13
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |    7   20    8   11   14    5   15   12    8   24      |T   20   29   22   23   26   21   27   25   20   24    21
 WRMS |    7   20    8   12   13    5   14   11    6   19      |NE  18   27   20   20   24   18   26   22   20   22    18
 MEDI |    7   20    8   11   13    5   15   12    7   19      |MD  17   27   19   20   25   17   27   22   19   21    17

Table 3.1651.6   GPS week: 1651   Day: 6   MJD: 55807.000                            

        Weighted Average                                            Orbit Dynamics (7 days)
 PRN  |  cod  emr  esa  gfz  grg  igr  jpl  mit  ngs  sio  IGS |   cod  emr  esa  gfz  grg  igr  jpl  mit  ngs  sio   IGS
------+--------------------------------------------------------+---------------------------------------------------------
   2  |    7   26    9   10   17    3   15    6    7   18    4 |    13   24   11   13   14   14   17    8    7   13    13
   3  |    5   13    7    7   13    4   10   12    9   22    3 |    18   27   23   16   23   19   28   16   21   33    19
   4  |   15   15    9    8   21    6   12    9   11   18    4 |    67   68   68   68   53   64   66   72   64   59    66
   5  |    5   15    8    9    9    4   14    8   11   25    3 |    21   30   28   25   33   24   32   25   21   23    24
   6  |    6   15    7    6   13    5   11   10    7   19    3 |    15   27   21   15   25   17   28   14   18   28    18
   7  |    4   21    8    8   22    5   19   13   10   14    4 |    14   25   16   18   25   15   27   20   18   20    16
   8  |   13   14    9   11   18    9   12    9    7   11    4 |    71   77   71   72   61   70   73   75   72   67    71
   9E |   27   22   12   12   23    6   22   13   10   51    7 |    42   53   46   46   51   42   58   41   40   67    44
  10  |    8   12    6    8   10    5    9    6    9   26    3 |    21   27   25   26   30   23   27   23   24   29    24
  11E |    6   16    7    7   11    5   10   12   11   20    3 |    31   35   33   37   32   33   33   37   31   40    32
  12  |    6   21   10    9   13    4   15   10    8   29    4 |    19   31   23   24   26   20   29   17   22   22    20
  13  |    8   21    8    8   20    5   15   12   11   13    4 |     9   23   13    7    6   20   17   13   11   11    11
  14  |    5   23    8   12   15    6   17   10    7   15    4 |    19   32   23   24   27   19   31   22   20   24    20
  15  |    8   25   11   12   13    4   17    9   13   23    4 |    26   36   26   27   28   25   35   27   23   33    25
  16  |    7   23   10   13   15    6   15    9   12   45    4 |    20   34   23   23   26   19   30   17   22   33    20
  17  |    5   27   10   10   19    3   15    8    8   16    4 |    18   35   22   14   31   18   29   18   19   22    19
  18  |    7   17    8   13   11    6   15   12    6   36    4 |    18   27   21   26   23   18   26   24   18   26    18
  19  |    6   23    6    7   15    5   13   10   11   17    4 |    24   40   24   21   35   23   32   22   27   27    25
  20  |    9   17    7   12   10    4   15    6    8   21    3 |    24   31   30   31   29   27   30   26   30   26    28
  21  |    6   23    7   10   16    5   16    7    9   16    4 |    22   34   22   21   30   20   30   22   21   23    22
  22  |    6   17    6    8    8    4   15    9    7   28    3 |    23   29   28   27   31   25   32   30   25   28    25
  23  |    7   23   10    8   15    5   18   11    8   16    4 |    21   35   24   23   27   19   34   23   22   20    22
  24  |    7   17    9    6    9    6   12   14   12   29    4 |    17   24   21   21   17   18   22   23   24   29    19
  25  |    6   12    8   10   13    4   17    8    5   22    3 |    21   30   27   22   30   22   35   25   24   20    23
  26  |    8   14    8    9    8    5    9   10   14   28    3 |    16   24   21   18   23   18   25   19   22   34    18
 X27E |   27   24   19   17   49   17   22   14  ---  ---   10 |    92   96   99   89  125   86  106   84  ---  ---    95
  28  |    8   21    5   13   15    7   14   10    8   46    4 |    20   32   25   30   28   21   32   25   25   42    24
  29  |    8   18    8   12   16    5   13    9   11   16    4 |    21   29   14   19   20   19   24   22   19   26    17
 X30  |   10  ---    7   19   11    5  ---    8    5   20    4 |    15  ---   17   19   17   14  ---   17   10   13    15
  31  |    8   25    7    7   21    4   16    7   10   15    4 |    16   28   20   17   30   16   27   17   18   17    16
  32  |    8   15    7   12   10    6   12    8    7   17    3 |    16   21   21   22   21   18   22   22   20   20    19
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |    9   19    8   10   15    5   15   10    9   25      |T   25   35   28   27   31   26   34   27   24   29    26
 WRMS |    7   19    8    9   12    5   14    9    7   21      |NE  22   32   25   24   27   23   31   24   23   27    23
 MEDI |    7   18    8   10   15    5   15    9    9   20      |MD  20   30   23   23   28   20   30   22   22   26    20



Table 4: Precise Navigation Summary.

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

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

Table 4.1651   GPS week: 1651   MJD: 55801.0-55807.0

CENT| CLK EPO  |        BRUS       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 2989 |U   13     8    28 |U    6     9    26 |U   10    12    19 |
emr | emr 2824 |U   16     9    34 |U    7     9    29 |    17    13    25 |
esa | esa 2989 |    13     8    30 |U    6     8    26 |    12    13    21 |
gfz | gfz 2932 |U   12     7    28 |U    7     8    30 |U   10    12    17 |
grg | grg 2921 |    14     8    30 |U    7     9    28 |    12    14    21 |
igr | igr 2980 |    12     8    28 |     6     8    25 |    14    12    22 |
igs | igs 2957 |    13     7    29 |     6     8    25 |    13    12    21 |
jpl | jpl 2792 |U   16     9    34 |U    7     9    28 |    19    18    28 |
mit | mit 2989 |U   14    12    33 |U    7    10    27 |U   17    17    27 |



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 5.1651.0   GPS week: 1651   Day: 0   MJD: 55801.0

CENT| CLK EPO  |        BRUS       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3063 |    11     8    23 |     7     8    27 |    10     8    19 |
emr | emr 2880 |    15    11    29 |     7     9    24 |    13     8    20 |
esa | esa 3072 |    11     8    22 |     7     8    25 |     9     8    19 |
gfz | gfz 2975 |    10     7    19 |     9     8    46 |     9     7    18 |
grg | grg 2976 |    10     8    20 |     7     8    26 |    12     9    24 |
igr | igr 3006 |    10     7    21 |     7     8    24 |    10     8    21 |
igs | igs 3016 |    11     8    23 |     7     8    24 |    10     7    18 |
jpl | jpl 2784 |    16    10    34 |     7     8    22 |    20    25    26 |
mit | mit 3072 |     9     7    19 |     7    10    25 |    10    10    25 |

Table 5.1651.1   GPS week: 1651   Day: 1   MJD: 55802.0

CENT| CLK EPO  |        BRUS       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3058 |    16    10    37 |     7     8    27 |     9    14    18 |
emr | emr 2880 |    17     9    42 |     7     8    31 |  ----  ----  ---- |
esa | esa 3072 |    15     9    37 |     7     6    25 |    10    13    21 |
gfz | gfz 2975 |    15     9    37 |     7     7    24 |     2     1     4 |
grg | grg 2976 |    16     9    37 |     7     8    22 |    10    13    18 |
igr | igr 3031 |    14     9    34 |     6     8    23 |    11    11    21 |
igs | igs 2951 |    15     8    39 |     7     7    25 |    10    13    20 |
jpl | jpl 2880 |    14     7    40 |     7     8    26 |    13    13    26 |
mit | mit 3072 |    15     9    38 |     8    10    24 |    12    17    18 |

Table 5.1651.2   GPS week: 1651   Day: 2   MJD: 55803.0

CENT| CLK EPO  |        BRUS       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3045 |    11     6    18 |     4     8    19 |    14    16    27 |
emr | emr 2784 |    19     7    30 |     5     7    32 |    17    13    28 |
esa | esa 3072 |    11     6    17 |     4     7    20 |    11    14    22 |
gfz | gfz 2976 |    11     6    15 |     5     7    21 |    13    16    23 |
grg | grg 2880 |    17     7    23 |     5     8    29 |    13    17    22 |
igr | igr 3054 |    11     7    19 |     5     7    19 |    12    15    23 |
igs | igs 3037 |    11     6    16 |     4     7    20 |    12    14    23 |
jpl | jpl 2777 |    14     7    23 |     5     6    24 |    18    18    27 |
mit | mit 3072 |    11     6    19 |     5     5    22 |    13    18    25 |

Table 5.1651.3   GPS week: 1651   Day: 3   MJD: 55804.0

CENT| CLK EPO  |        BRUS       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 2935 |    15     7    28 |     8    11    33 |  ----  ----  ---- |
emr | emr 2784 |    16    10    34 |     8    12    35 |    14    12    22 |
esa | esa 2880 |    15     8    27 |     8    12    30 |  ----  ----  ---- |
gfz | gfz 2880 |    15     7    30 |     8     9    28 |  ----  ----  ---- |
grg | grg 2880 |    15     7    27 |     9    11    32 |  ----  ----  ---- |
igr | igr 2879 |    14     8    29 |     8    11    30 |    12     8    21 |
igs | igs 2880 |    15     8    27 |     8    11    31 |    10     8    21 |
jpl | jpl 2779 |    23    12    40 |     8    12    31 |    12    11    23 |
mit | mit 2880 |    15     7    24 |     9    12    30 |  ----  ----  ---- |

Table 5.1651.4   GPS week: 1651   Day: 4   MJD: 55805.0

CENT| CLK EPO  |        BRUS       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 2878 |    10     7    30 |     5     9    20 |     8     8    18 |
emr | emr 2784 |    14     6    36 |     7    10    28 |    11    13    25 |
esa | esa 2880 |    10     5    30 |     6    10    24 |    10    10    21 |
gfz | gfz 2875 |     9     5    29 |     7     9    40 |     9     9    19 |
grg | grg 2880 |    10     6    32 |     7    12    27 |     8     9    22 |
igr | igr 2942 |    10     6    28 |     5     9    23 |     9     9    20 |
igs | igs 2880 |    11     5    29 |     6     9    23 |     9     9    20 |
jpl | jpl 2776 |    13     7    34 |     6    10    23 |     9    11    27 |
mit | mit 2880 |    10     6    29 |     7     9    21 |    10    10    20 |

Table 5.1651.5   GPS week: 1651   Day: 5   MJD: 55806.0

CENT| CLK EPO  |        BRUS       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 2975 |    14     8    26 |     6     8    33 |    11    11    17 |
emr | emr 2782 |    17     9    34 |     8     8    35 |    13    13    27 |
esa | esa 2976 |    14     8    33 |     7     8    35 |    11    14    20 |
gfz | gfz 2873 |    13     9    25 |     6     8    27 |    12    13    21 |
grg | grg 2880 |    15    10    29 |     7     8    34 |    11    13    19 |
igr | igr 2976 |    13     8    24 |     6     7    31 |    11    12    18 |
igs | igs 2967 |    14     8    26 |     7     7    32 |    12    12    19 |
jpl | jpl 2688 |    15    10    31 |    12     8    45 |    17    18    27 |
mit | mit 2976 |    14     8    35 |     7     9    34 |    13    14    23 |

Table 5.1651.6   GPS week: 1651   Day: 6   MJD: 55807.0

CENT| CLK EPO  |        BRUS       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 2974 |    13     9    38 |     6     8    25 |     7    17    17 |
emr | emr 2875 |    15    11    31 |     7     9    21 |    33    17    28 |
esa | esa 2976 |    13     9    41 |     5     8    23 |    21    23    22 |
gfz | gfz 2972 |    13     9    41 |     5     6    24 |    18    25    19 |
grg | grg 2976 |    13    10    42 |     7     7    28 |    17    20    20 |
igr | igr 2974 |    13     9    40 |     5     8    22 |    31    23    30 |
igs | igs 2972 |    14     9    41 |     6     7    24 |    28    18    25 |
jpl | jpl 2864 |    16    13    39 |     6     9    25 |    42    30    40 |
mit | mit 2976 |    27    45    70 |     7    13    32 |    43    31    55 |


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 6.1651   GPS week: 1651   MJD: 55801.500-55807.500

                                                         AC LOD  AC LOD
CENT  FLAG  |   Xpole   Ypole     Xrt     Yrt    LOD |    BIAS  BIAS RMS
            |   [uas]   [uas]   [uas/d] [uas/d]  [us]|    [us]    [us]
------------+----------------------------------------+------------------
cod   xxxxx |       4     -20      29     -40     -1 |       8     20
            |      33      20      84      75      6 |       3
emr   uuuuu |      13      48     -19      96      5 |      57     60
            |       9      22     125      66      3 |       5
esa   uuuuu |      -2     -36      67      63      3 |      14     25
            |       8      16      64      97      5 |       5
gfz   uuuuu |     -31      13      41     -58      0 |       8     19
            |      28      17      63     117      3 |       3
grg   uuuux |      26     -40     -20    -138    -23 |      12     36
            |      30      17      56      70     27 |      15
igr   xxxxx |     -18       1       9     -63     -2 |       2     20
            |      14       9      55      80      6 |       3
irf   xxxxx |      12       1     -14     -61      1 |       6     19
            |       7       4      21      55      4 |       4
jpl   uuuuu |      -1      -1      18      68    -10 |      44     48
            |      29      19      94      45     12 |       5
mit   uuuuu |      11      -9    -113     -92      5 |      18     26
            |       9       6      17      54      4 |       4
ngs   uuuuu |       2      44       7     -15     -1 |      10     20
            |      45      31      70     169      5 |       3
sio   xuuuu |     178     -18    -127      74    -13 |      37     41
            |      12       5     114     121     13 |       2


Table 7.1651.0   GPS week: 1651   Day: 0   MJD: 55801.500

                                                         AC LOD  AC LOD
CENT  FLAG  |   Xpole   Ypole     Xrt     Yrt    LOD |    BIAS  BIAS RMS
            |   [uas]   [uas]   [uas/d] [uas/d]  [us]|    [us]    [us]
------------+----------------------------------------+------------------
cod   xxxxx |      -4     -44    -118      60     -7 |       7     21
emr   uuuuu |       3      74      12      89      1 |      52     55
esa   uuuuu |       7     -39      78     236      4 |       9     23
gfz   uuuuu |       2      30     -76      -9      0 |       5     18
grg   uuuux |     -19     -23      37    -228    -65 |      44     94
igr   xxxxx |      -2      -2      33      75    -11 |       2     21
irf   xxxxx |      23       3     -16       9      4 |       2     19
jpl   uuuuu |      -4       0     154      29    -20 |      49     55
mit   uuuuu |      21      -1     -89     -65      1 |      14     24
ngs   uuuuu |     -29       7     -63    -323      1 |       8     19
sio   xuuuu |     190     -14    -123     213    -13 |      37     41

Table 7.1651.1   GPS week: 1651   Day: 1   MJD: 55802.500

                                                         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 |      68       1      24     -94     -6 |       8     21
emr   uuuuu |       4      74    -116      -9      5 |      53     56
esa   uuuuu |      -2     -50     -24      15     11 |      10     23
gfz   uuuuu |       5      -2      67     133     -1 |       6     18
grg   uuuux |      78     -29      -8     -25    -20 |      15     38
igr   xxxxx |      -1       0     -57     -31      2 |       2     21
irf   xxxxx |      10      -2     -14     -54      3 |       4     18
jpl   uuuuu |      26      23      84     141    -19 |      48     54
mit   uuuuu |      -3      -5     -95    -161      4 |      15     24
ngs   uuuuu |     -53      49      67    -144     -4 |       9     20
sio   xuuuu |     175     -15    -149     118    -14 |      38     42

Table 7.1651.2   GPS week: 1651   Day: 2   MJD: 55803.500

                                                         AC LOD  AC LOD
CENT  FLAG  |   Xpole   Ypole     Xrt     Yrt    LOD |    BIAS  BIAS RMS
            |   [uas]   [uas]   [uas/d] [uas/d]  [us]|    [us]    [us]
------------+----------------------------------------+------------------
cod   xxxxx |       3     -39     129      61      4 |       9     22
emr   uuuuu |       6      52    -144      92      7 |      56     60
esa   uuuuu |       8     -51     154     -55      1 |      14     27
gfz   uuuuu |     -25      -7     123     -45      2 |       8     20
grg   uuuux |      30     -35     -39    -122    -19 |      14     38
igr   xxxxx |     -15       3      76     -60     -3 |       4     23
irf   xxxxx |      15      -5     -19     -34      0 |       7     21
jpl   uuuuu |      10      14      -7      58    -19 |      48     53
mit   uuuuu |      12     -13    -138     -90      4 |      18     27
ngs   uuuuu |     -16      60     -41      97      0 |      10     21
sio   xuuuu |     194     -25    -231     200    -16 |      39     43

Table 7.1651.3   GPS week: 1651   Day: 3   MJD: 55804.500

                                                         AC LOD  AC LOD
CENT  FLAG  |   Xpole   Ypole     Xrt     Yrt    LOD |    BIAS  BIAS RMS
            |   [uas]   [uas]   [uas/d] [uas/d]  [us]|    [us]    [us]
------------+----------------------------------------+------------------
cod   xxxxx |      23      10     -10     -26     -6 |       7     20
emr   uuuuu |      20      31     -55     139      8 |      55     59
esa   uuuuu |      -1     -23      21      -5      8 |      13     26
gfz   uuuuu |     -30      -5      72     -20      0 |       7     18
grg   uuuux |      43     -51      26    -113     12 |       4     21
igr   xxxxx |     -13      20     -11     -27     -2 |       2     21
irf   xxxxx |       6       7     -53     -42     -5 |       5     20
jpl   uuuuu |      37     -16      81      90    -16 |      42     47
mit   uuuuu |       5     -11    -121     -14      0 |      16     25
ngs   uuuuu |     -34      75      16     -50      5 |       8     19
sio   xuuuu |     171     -12    -302     117    -30 |      37     41

Table 7.1651.4   GPS week: 1651   Day: 4   MJD: 55805.500

                                                         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 |     -12     -22      57    -132     -2 |       6     19
emr   uuuuu |      18      16      16      90      2 |      55     58
esa   uuuuu |      -2     -47      26     106      2 |      12     25
gfz   uuuuu |     -69      22      50    -132     -5 |       6     18
grg   uuuux |       9     -51     -43    -197      8 |       2     19
igr   xxxxx |     -32       1     -48    -139     -7 |      -1     19
irf   xxxxx |       1       4      -8     -99     -1 |       5     19
jpl   uuuuu |     -15     -17       2      94      0 |      37     41
mit   uuuuu |       5      -6    -125     -99      6 |      16     25
ngs   uuuuu |      58      79      28      56      5 |       9     19
sio   xuuuu |     157     -22     -66      12    -20 |      34     39

Table 7.1651.5   GPS week: 1651   Day: 5   MJD: 55806.500

                                                         AC LOD  AC LOD
CENT  FLAG  |   Xpole   Ypole     Xrt     Yrt    LOD |    BIAS  BIAS RMS
            |   [uas]   [uas]   [uas/d] [uas/d]  [us]|    [us]    [us]
------------+----------------------------------------+------------------
cod   xxxxx |     -29     -27     118     -72      5 |       8     21
emr   uuuuu |      26      35     231     207      7 |      59     63
esa   uuuuu |     -14      -8      76     117     -4 |      16     28
gfz   uuuuu |     -56      24      51    -246      4 |       9     20
grg   uuuux |      20     -67      11    -185    -43 |       3     21
igr   xxxxx |     -26      -7      -9    -165      6 |       1     20
irf   xxxxx |      13      -2      -2    -163     -1 |       8     21
jpl   uuuuu |     -13     -26     -81      60    -10 |      39     43
mit   uuuuu |      22     -21    -116    -158      5 |      20     29
ngs   uuuuu |      29      38     -74     129     -4 |      11     23
sio   xxxxx |     181     -23     -53    -114    -12 |      34     39

Table 7.1651.6   GPS week: 1651   Day: 6   MJD: 55807.500

                                                         AC LOD  AC LOD
CENT  FLAG  |   Xpole   Ypole     Xrt     Yrt    LOD |    BIAS  BIAS RMS
            |   [uas]   [uas]   [uas/d] [uas/d]  [us]|    [us]    [us]
------------+----------------------------------------+------------------
cod   xxxxx |     -23     -20       5     -75      8 |      14     19
emr   uuuuu |      15      57     -76      67      5 |      66     67
esa   uuuuu |      -9     -36     134      27     -3 |      22     26
gfz   uuuuu |     -46      30       0     -89      2 |      15     18
grg   uuuux |      20     -22    -126     -95    -32 |       3     22
igr   xxxxx |     -36      -8      76     -93      1 |       7     15
irf   xxxxx |      18      -1      15     -41      8 |      14     18
jpl   uuuuu |     -49      15    -108       7     13 |      43     45
mit   uuuuu |      15      -7    -108     -55     12 |      27     30
ngs   uuuuu |      56       3     115     127    -10 |      17     20
sio   xxxxx |     180     -12      37     -25     14 |      37     40



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