[IGSREPORT-18114] Wk 1561 IGS Final Orbits

Jim Ray IGS.ACC at noaa.gov
Thu Dec 24 05:40:22 PST 2009


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IGS Electronic Report   24 Dec 05:40:25 PST 2009      Message Number 18114
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Author:  AC Coordinator / NOAA NGS

sum-file Version 2.0
Final IGS Orbit Combination - Week 1561   (Dec 06, 2009 - Dec 12, 2009)

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 (weights are those from the orbit combination). 
Pole rate combination uses only centres providing estimated pole rates.

  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:

igs1561[0-6].sp3  IGS GPS ephemeris files in SP3 format.
igs1561[0-6].clk  IGS GPS satellite and station clocks in SP3 format.
igs1561[0-6].cls  IGS GPS clock combination summary report.
igs15617.erp      Earth Rotation Parameters (ERP) and their rates as well as
                  Universal Time (UT1-UTC) and Length Of Day (LOD) associated 
                  with IGS ephemerides.
igs15617.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 they either 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 1478, a new solution from CNES/GRGS (GRG) is included for
    evaluation and statistics only.

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

 4. The following clock solutions were excluded from the combination because they
    were biasing the combined clock solutions (clock shifts/outliers) but were
    kept for the RMS computation.  Duplicate entries can arise due to separate
    combination runs for the 30-s clocks ACs (listed first) and the 5-min clock
    ACs (listed second).
    
               Day | Centre | PRN/STA list
               ----+--------+---------------
                0  |  ALL   | 1 1
                0  |  COD   | 32
                0  |  EMR   | WTZR WTZR
                0  |  ESA   | 32 UNSA
                0  |  GFZ   | 14 27 ALIC ALRT AMC2 ARTU BAKO BOR1 CEDU CONZ CRO1
                0  |  GFZ   | DAEJ DARW DAV1 DGAR EIL1 FAA1 FAIR GRAZ GUAT HARB
                0  |  GFZ   | HOB2 KARR KERG KOUR MAS1 MDO1 MIZU NRC1 ONSA PRDS
                0  |  GFZ   | RIOP SANT SFER THTI THU3 TIDB TOW2 TSKB TWTF USUD
                0  |  GFZ   | WSRT YAKT
                0  |  GRG   | WTZR
                0  |  JPL   | 32 DGAR
                0  |  MIT   | GUAT HARB IRKT
                1  |  COD   | 1 32 1 32 CHUR DAV1 FLIN
                1  |  EMR   | 10 10 WTZR WTZR
                1  |  ESA   | 5 32 SUTH UNSA
                1  |  GFZ   | 3 5 10 13 17 29 ADE1 ALIC AREQ BJFS BRFT CAS1 DAEJ
                1  |  GFZ   | DGAR GUAT HARB ISPA KIRU MAL2 MAS1 MBAR MDO1 NYA1
                1  |  GFZ   | NYAL ONSA PIE1 REUN SANT SEY1 SFER SHAO TOW2 YAKT
                1  |  GFZ   | YELL YKRO
                1  |  GRG   | MCM4 TLSE WTZR
                1  |  JPL   | 32 DGAR FLIN
                1  |  MIT   | 5 24 5 24 HARB
                2  |  COD   | 32 10 32 HARB
                2  |  EMR   | WTZR
                2  |  ESA   | 10 32
                2  |  GFZ   | 3 5 11 13 14 18 22 27 28 32 ALIC AMC2 AREQ BAKO BOR1
                2  |  GFZ   | BUE1 CHAT CONZ DARW FAA1 GUAT HARB HOB2 HOLM HRAO
                2  |  GFZ   | HRM1 ISPA KARR LPGS MAS1 MBAR MCM4 MDO1 NICO NTUS
                2  |  GFZ   | ONSA OUS2 PERT PRE1 SANT SCH2 SFER SUTH TIDB TOW2
                2  |  GFZ   | TSKB TWTF UNSA WSRT YAR2 YKRO ZECK ZIMM
                2  |  GRG   | WTZR
                2  |  JPL   | 18 32 DGAR
                2  |  MIT   | 24 24
                2  |  NGS   | 1
                3  |  COD   | 32 10 32
                3  |  EMR   | WTZR WTZR
                3  |  ESA   | 10 32
                3  |  GFZ   | 5 18 19 20 ALIC AMC2 BAKO BOR1 BRUS CAS1 CHAT COCO
                3  |  GFZ   | CRO1 DARW DAV1 DGAR FAA1 HRM1 KARR MAS1 MBAR MDO1
                3  |  GFZ   | METS NANO NYA1 ONSA OUS2 PRE1 RABT SANT SCH2 SFER
                3  |  GFZ   | SUTH TSKB VILL WHIT WSRT WTZR YAR2 ZECK
                3  |  GRG   | TLSE WTZR
                3  |  JPL   | 32 DGAR GUAT
                3  |  MIT   | 1 1 DARW GUAT
                3  |  NGS   | 1
                4  |  COD   | 10 10 WTZR DUBO
                4  |  EMR   | MCM4 WTZR
                4  |  ESA   | 10 UNSA
                4  |  GFZ   | 5 10 13 18 19 20 32 ADE1 ALIC AREQ AUCK BRFT BRUS
                4  |  GFZ   | CAS1 CEDU CONZ DARW DAV1 DGAR FAA1 GODE HOB2 HOLM
                4  |  GFZ   | KIRU LPGS MAC1 MATE MDO1 METS MIZU NRMD NYAL ONSA
                4  |  GFZ   | OUS2 PDEL QAQ1 REUN SANT SFER THTI TIDB TWTF WSRT
                4  |  GFZ   | WTZR YELL
                4  |  GRG   | ONSA POTS TLSE
                4  |  JPL   | 32 DGAR
                4  |  MIT   | 1 6 24 1 6 24 DARW WTZR
                4  |  NGS   | 1
                5  |  ALL   | 8
                5  |  COD   | 1 10 1 10
                5  |  EMR   | 32 32 WTZR WTZR
                5  |  ESA   | 10 32
                5  |  GFZ   | 5 10 16 17 18 19 20 32 AMC2 AREQ AUCK BAKO BJFS BRAZ
                5  |  GFZ   | CONZ DAEJ DGAR DUBO FAA1 FAIR GLSV GODE GRAZ GUAM
                5  |  GFZ   | HARB HOFN HYDE KIRU KIT3 MBAR MCM4 MDO1 MIZU NANO
                5  |  GFZ   | NYAL ONSA PRDS PRE1 QAQ1 RIOP SFER SHAO SUTH THTI
                5  |  GFZ   | THU3 TRO1 TWTF VESL WTZR YELL ZIMM
                5  |  GRG   | USUD
                5  |  JPL   | 10 32 DGAR
                5  |  MIT   | 24 24 DARW DARW HARB
                6  |  ALL   | 1
                6  |  COD   | 10 32 1 10 32
                6  |  EMR   | WTZR
                6  |  ESA   | 10 32 DARW FAA1 UNSA
                6  |  GFZ   | 3 5 18 ALGO BOR1 BRAZ CAS1 CHAT DAV1 FAIR HOLM KARR
                6  |  GFZ   | KIRU KIT3 MAS1 MCM4 MDO1 METS MIZU NICO NRMD NYA1
                6  |  GFZ   | ONSA OUS2 PERT QAQ1 RABT REUN SCH2 TIDB TRO1 TSKB
                6  |  GFZ   | VILL WHIT WSRT
                6  |  GRG   | ALGO ONSA ZECK
                6  |  JPL   | 32 CEDU DGAR FLIN
                6  |  MIT   | 24 24 CEDU FLIN HARB
                6  |  NGS   | 1

 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
               ----+------------+----------
               G07 | 2009_12_09 | 2009124 
               G08 | 2009_12_11 | 2009125 

 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
               ----+--------+---------------
                1  |  ESA   |   5

 7. Starting on 5-Nov-2006 (GPS Week 1400, day 0, MJD 54044) 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.

 8. Small rotations were applied to the all AC orbit and ERP values in order
    to align them to the IGS05. These rotations were estimated in the process
    of the IGS SINEX combination, performed at NRCan by Remi Ferland, are based 
    on the common stations between the individual AC SINEX solutions and the 
    IGS05.snx SINEX. 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  |     .2    1.0     .7     -29     -7    -17     .14
       EMR  |    6.4   -3.3   12.1      57    -25      1     .56
       ESA  |   10.2   -3.4   -2.2      26    -80     89     .19
       GFZ  |     .6    1.4    1.0      10     -8    -11     .14
       GRG  |   13.6   11.3    3.1     204    -14   -522     .88
       JPL  |    4.9    1.7   19.5      14    -30    -18     .55
       MIT  |    2.8   -2.6   -4.5      22     -4      2     .13
       NGS  |    7.3   -7.4   -4.1     -81   -113     24     .28
       SIO  |    5.1   -1.4   -8.1     -35    -92     44     .51


 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 NRCan. 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 on 5-Nov-2006 (GPS Week 1400, day 0, MJD 54044) the absolute antenna
    model is introduced (IGSMAIL #5272). The antenna phase center offsets and
    phase center variations are given in the file:
        ftp://igscb.jpl.nasa.gov/pub/station/general/igs05.atx

    
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 1.1561.a). It also displays the computed satellite
position sigmas for the combined orbits (table 1.1561.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 2.1561.[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 3.1561.[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 5.1561.0-6).

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 1561 summary.                       (Dec 06, 2009 - Dec 12, 2009)

Table 1.1561.a   GPS week: 1561   MJD: 55171.000-55177.000

         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  238|    0     0     0    36   -52    -4  -.15    8    8 |    -406     128     16     69
        |    0     0     0    20    19    18   .03           |     422     736
emr   89|    0     0     8  -128   -15    11   .51   19   19 |     384     273     22     90
        |    2     2     1    21    26    16   .04           |    1104    1168
esa  121|    1     0    -2   -79   -12    17   .26   10   10 |    -468     518     19    124
        |    1     1     1    14    22    23   .02           |     560    1397
gfz  195|    0    -1    -3   -24   -53   -12  -.13   10   10 |      40     888     35    143
        |    0     0     0    37    47     9   .06           |     696    2324
grg  110|    0     3     0  -425   -64    16  1.02   23   22 |       7      12     60    222
        |    1     1     2    35    22    25   .03           |     261     642
igr  n/a|    0     0     0   -10   -79   -71   .02    6    6 |    3172     570     24     86
        |    0     0     0    15    22    20   .03           |    1507    1229
jpl  133|    0     1     7   -68     2    19   .57   17   15 |    1743     495     19     99
        |    1     0     1    17    22    36   .04           |    1329    1373
mit  255|    0     0    -3   -29   -79    13  -.37   13   12 |  -15620     234     20    118
        |    1     0     0    27    22    15   .04           |     488    1708
ngs  217|    0     0    -1   138   153   -30  -.17   10    8 | -503176  529768   3039  26695
        |    0     1     1    25    34    19   .03           |  492427  517191
sio  262|   -2     3     3    84    87    12   .16   21   20 |     ---     ---    ---    ---
        |    0     0     0    27    33    15   .03           |     ---     ---


Table 1.1561.b   GPS week : 1561   MJD: 55171.000-55177.000   

         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  |   13   10   11    9   10    9   10 |
   2  |    6    6    6    6    6    6    6 |
   3  |    4    4    4    4    4    4    4 |
   4  |    4    4    5    5    4    4    4 |
   5  |    8   12    5    5    5    5    5 |
   6  |    5    4    4    4    4    4    4 |
   7  |    4    4    4    0    5    4    4 |
   8  |    5    5    6    5    5   10    5 |
   9  |    4    5    5    5    5    5    4 |
  10  |    7    6    7    6    6    6    6 |
  11  |    4    4    4    4    4    4    4 |
  12  |    5    5    5    5    5    5    5 |
  13  |    4    4    5    5    5    4    4 |
  14  |    5    5    5    5    5    4    5 |
  15  |    5    5    5    5    5    5    6 |
  16  |    5    5    5    5    5    5    5 |
  17  |    5    5    5    6    5    5    5 |
  18  |    5    5    5    5    5    5    5 |
  19  |    4    4    4    4    5    4    5 |
  20  |    5    5    5    4    4    4    4 |
  21  |    5    6    6    5    5    5    6 |
  22  |    4    5    5    5    5    4    4 |
  23  |    5    5    5    5    5    5    5 |
  24  |   13   17   12   17   13   16   10 |
  25  |    5    5    5    5    4    4    4 |
  26  |    4    4    4    4    4    4    4 |
  27  |    5    5    5    5    5    5    4 |
  28  |    4    4    4    4    4    4    4 |
  29  |    5    5    5    5    6    5    5 |
  30  |    4    4    4    5    4    4    5 |
  31  |    5    4    4    4    4    4    4 |
  32  |    7    7    6    6    6    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 2.1561.0   GPS week: 1561   Day: 0   MJD: 55171.000                            

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  238|    0     0     0    29   -40    11  -.18   10    9 |    -430      98     18     72
        |                    -22    21                       |
emr   89|   -2     4     8  -155    -7     2   .45   20   20 |     111     613     23     73
        |                      2   -31                       |
esa  121|    1     0    -2   -68   -43    10   .26    9    9 |    -944    1790     17    106
        |                    -24    33                       |
gfz  195|    0     0    -2     6   -88    -6  -.05   11   11 |     323   -1387     40    168
        |                    -30   -34                       |
grg  110|    0     3     2  -423   -33    34  1.01   23   22 |     -94     100     64    202
        |                     44   -20                       |
igr  n/a|    0     0     0     2   -88   -55   .03    6    6 |    1989     881     33    147
        |                    -58   -18                       |
jpl  133|   -3     2     5   -57     6    66   .54   18   16 |    1165     967     15     86
        |                     17   -22                       |
mit  255|    1     0    -3   -52   -36   -14  -.33   12   10 |  -15473    -698     22     97
        |                     -4    24                       |
ngs  217|    0    -1     0   140   139   -20  -.19   10    7 | -999999 1097440   2050   3379
        |                     24    -5                       |
sio  262|   -1     2     4    70   141   -16   .14   22   19 |     ---     ---    ---    ---
        |                   -106   -61                       |

Table 2.1561.1   GPS week: 1561   Day: 1   MJD: 55172.000                            

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  238|    0     0     0     6   -29    -5  -.10    8    8 |    -342     415     13     59
        |                     14   -46                       |
emr   89|    1    -2     8  -117    34     0   .54   20   20 |    1702    -920     21     87
        |                    -44   -61                       |
esa  121|    1     1    -1   -81     7   -12   .25   12   12 |     160     -92     20    132
        |                     -5    12                       |
gfz  195|    0    -1    -4   -47  -104    -3  -.09    9    9 |     436     798     36    134
        |                    -42     4                       |
grg  110|    0     2     1  -464   -46    31  1.03   22   21 |      83     387     54    212
        |                     77     6                       |
igr  n/a|   -1     1     0     0   -87   -55   .05    6    6 |    3635    -682     24     73
        |                    -40   -25                       |
jpl  133|   -2     1     7   -75    40    59   .64   18   16 |    2536    -911     19    103
        |                     13   -85                       |
mit  255|    1     0    -3    -1   -85    11  -.31   11    9 |  -15687     241     21    116
        |                    -29    32                       |
ngs  217|    0     0     0   155   194   -30  -.18   11    8 | -999999 1123073   5116  84279
        |                    105   -35                       |
sio  262|   -1     3     3   106    96    14   .17   20   20 |     ---     ---    ---    ---
        |                   -123   -41                       |

Table 2.1561.2   GPS week: 1561   Day: 2   MJD: 55173.000                            

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  238|    0     1     0    66   -89     5  -.17   10    9 |     127    -690     22     82
        |                    -52    17                       |
emr   89|   -3     0     8   -96   -29    15   .51   19   19 |     156    -292     55    128
        |                    -35   -53                       |
esa  121|    2    -3    -2   -83   -40    16   .27   12   12 |    -616    -290     25    139
        |                    -24    -4                       |
gfz  195|    0    -1    -3   -88     9   -14  -.10   10   10 |     454    2102     37    172
        |                    -48   -30                       |
grg  110|    1     5     3  -387   -96    -2   .97   23   22 |     315    -734     60    225
        |                     12    54                       |
igr  n/a|    0     0     0    -2  -120   -97   .04    6    6 |    2332     -96     29     99
        |                    -39   -14                       |
jpl  133|    0     1     5   -38   -18    32   .57   16   14 |     994    -234     36    115
        |                     25   -34                       |
mit  255|    0     0    -4   -46   -61    13  -.36   13   12 |  -15345     331     31    144
        |                      7    12                       |
ngs  217|    0     0     0   180   122   -43  -.20   10    7 |   13704     509   2265   3509
        |                    -10    21                       |
sio  262|   -2     3     3    33   109    13   .12   20   18 |     ---     ---    ---    ---
        |                    -87   -43                       |

Table 2.1561.3   GPS week: 1561   Day: 3   MJD: 55174.000                            

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  238|    0     0     0    38   -46    21  -.15    8    7 |      -2    -976     17     77
        |                     16   -35                       |
emr   89|    0     2     7  -156    -4    12   .51   17   17 |     144    -996     16     81
        |                      9   -30                       |
esa  121|    0     0    -2   -98   -10    12   .25   11   11 |     118    -989     18    125
        |                    -16    -9                       |
gfz  195|    0    -2    -4   -16   -78   -25  -.20    9    9 |     409    -982     37    140
        |                    -39     0                       |
grg  110|    0     4     0  -383   -52    47  1.04   23   22 |     387    -869     63    257
        |                    -11   -14                       |
igr  n/a|    0     0    -1     0   -48  -101   .02    6    6 |    2712    -661     20     74
        |                    -32   -33                       |
jpl  133|    0     2     8   -92    20    27   .57   17   15 |    1296   -1005     17    104
        |                     13   -38                       |
mit  255|   -1     0    -4    12   -84    16  -.37   14   14 |  -15580   -1007     18    110
        |                    -20    28                       |
ngs  217|    1    -2    -1   130   188   -61  -.15   10    8 |   16850   -1660   2356   3781
        |                    102   -84                       |
sio  262|   -3     4     3   113    39    12   .17   21   20 |     ---     ---    ---    ---
        |                   -113    -8                       |

Table 2.1561.4   GPS week: 1561   Day: 4   MJD: 55175.000                            

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  238|    0     0     1    53   -51   -21  -.16    8    7 |    -309     197     14     77
        |                    -34   -18                       |
emr   89|    1    -3     6  -122   -19    -5   .52   19   19 |   -1075    2361     16     91
        |                    -16   -20                       |
esa  121|    0     1    -2   -95    -2    28   .25   11   10 |    -744    1208     20    126
        |                    -19   -13                       |
gfz  195|    0     0    -3   -33   -80    -3  -.10   10   10 |   -1097    3086     34    141
        |                    -19   -22                       |
grg  110|    1     3    -1  -433   -74    29  1.04   22   20 |    -282     650     66    232
        |                     39    18                       |
igr  n/a|    0     0     0   -13   -75   -73  -.02    6    6 |    1893    2824     24     72
        |                    -20    -2                       |
jpl  133|    0     0     7   -81     1    -3   .54   17   15 |     252    2886     18     96
        |                      8   -26                       |
mit  255|   -2     0    -3   -34   -98    37  -.39   14   13 |  -15743     672     17    134
        |                    -12    21                       |
ngs  217|    0     0    -3   138   185   -37  -.16   10    7 |   13157    3316   2237   3925
        |                     95   -42                       |
sio  262|   -3     3     1    89    58    36   .12   20   22 |     ---     ---    ---    ---
        |                   -108   -21                       |

Table 2.1561.5   GPS week: 1561   Day: 5   MJD: 55176.000                            

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  238|    0     0     0    42   -65    -8  -.15    7    7 |   -1067     981     14     54
        |                      9   -34                       |
emr   89|    0     0     9  -120   -48    10   .56   19   19 |    -375     275     12     70
        |                    -19     1                       |
esa  121|    1     0    -1   -58    11     2   .29    9    8 |      -4    -713     18    116
        |                    -68   -44                       |
gfz  195|    0    -1    -4   -16    13    -7  -.20   10   10 |    -838    4223     32    122
        |                    -31   -42                       |
grg  110|    0     1     0  -408   -84    -4  1.05   23   24 |    -221    -199     60    224
        |                     37    50                       |
igr  n/a|    0     1     0   -39   -67   -54  -.01    5    5 |    3404     555     20     68
        |                    -15   -31                       |
jpl  133|    0     0     8   -69    -6   -11   .56   17   16 |    1641     485     15     95
        |                    -12   -37                       |
mit  255|   -1    -1    -3   -61   -98    18  -.41   13   11 |  -14960   -1556     19     96
        |                      8    18                       |
ngs  217|    0     0    -2   122   113    -7  -.13    9    8 | -798350  752100   5022  84324
        |                     38    15                       |
sio  262|   -1     3     3    77    83    18   .19   21   19 |     ---     ---    ---    ---
        |                    -84   -34                       |

Table 2.1561.6   GPS week: 1561   Day: 6   MJD: 55177.000                            

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  238|    1     0     0    21   -42   -32  -.17    8    7 |    -823     871     14     67
        |                     48   -25                       |
emr   89|    2     2    11  -133   -32    46   .46   18   18 |    2026     875     17    101
        |                    -32   -30                       |
esa  121|   -1    -1    -6   -70    -7    63   .27   10   10 |   -1248    2712     20    125
        |                    -56    12                       |
gfz  195|    0    -1    -3    25   -43   -24  -.16   10   10 |     593   -1623     35    126
        |                    -39   -13                       |
grg  110|   -2     0    -2  -476   -63   -19  1.00   22   21 |    -135     750     59    202
        |                    101     4                       |
igr  n/a|    0     0    -1   -20   -70   -61   .01    5    5 |    6241    1170     20     72
        |                    -48   -46                       |
jpl  133|    0     0     7   -66   -23   -30   .59   16   15 |    4322    1278     18     95
        |                    -20   -24                       |
mit  255|   -1     0    -2   -21   -89     8  -.41   14   13 |  -16557    3655     18    134
        |                     -5     9                       |
ngs  217|    0     0    -1    98   130    -9  -.19    9    7 | -767601  733601   2230   3669
        |                    111   -36                       |
sio  262|   -1     3     3   101    81    11   .18   22   21 |     ---     ---    ---    ---
        |                    -93   -52                       |

       
       
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 3.1561.0   GPS week: 1561   Day: 0   MJD: 55171.000                            

        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   49  ---  ---  ---   17  ---   18   16  ---   13 |    26   51  ---  ---  ---   35  ---   31   31  ---    30
   2  |   11   23    8   12   20    7   22   15   12   23    5 |    14   33   17   21   35   20   32   18   18   19    16
   3  |    7   14    9   11   18    6   10   12    8   25    4 |    15   20   24   23   20   19   21   17   18   17    17
   4  |   10   12    6    8   28    5    9    8    5   27    3 |    33   29   35   31   40   30   30   34   31   39    31
   5E |   13   25   10   15   16    9   26   32    9   36    7 |    40   45   81   40   46   43   42   57   39   60    41
   6  |    8   11   11   10   15    5   11   14    8   25    4 |    21   22   27   25   21   21   22   26   21   23    22
   7  |    8   21   10    9   27    5   16    7    8   12    4 |    10   24   17   11   15   15   19   11   14   11    12
   8  |   11   22    7    8   17    8   14   13    8   17    4 |     8   24   17   12   28   11   20   16   14   17    11
   9  |   10   21    6   10   16    6   14    8    6   25    4 |    20   30   23   22   29   18   25   19   21   31    19
  10E |   16   21    8   12   20   11   23    7   26   21    6 |    29   38   37   32   44   32   39   34   42   40    31
  11  |    7   17   10    8   25    5   15    6    8   18    4 |    36   40   39   36   44   32   37   37   38   31    36
  12  |   10   24    9   10   26    6   22   13    7   18    5 |    26   38   29   22   44   27   36   23   26   24    25
  13  |    6   22    9   10   28    4   17   10    8   14    4 |    18   33   23   21   46   20   29   19   20   17    19
  14  |   11   20    7   12   27    7   19    9    9   16    4 |    19   33   24   23   37   20   29   22   23   18    21
  15  |   10   23    8    7   23    5   24    9    9   23    5 |    23   32   24   22   39   22   29   21   27   23    22
  16  |    8   27   11    7   29    7   22   10    7   16    4 |    25   41   24   21   43   23   36   22   25   24    23
  17  |   11   13    8   13   19    7   14   13    8   30    4 |    24   26   30   31   33   25   25   27   25   41    26
  18E |    7   19    9   12   15    6   21   14    8   17    4 |    41   44   43   44   53   43   43   46   40   46    41
  19  |    9   17    9    8   23    6   10    7    8   28    4 |    24   22   30   28   27   25   19   27   23   25    24
  20E |   10   17   12   10   20    5   21    9    8   16    4 |    20   29   25   23   33   23   31   22   28   26    23
  21  |   14   18    7   11   28    7   19   10   10   29    5 |    22   35   26   19   46   22   36   20   24   19    23
  22E |    9   17    9   11   30    7   19    9    8   14    4 |    37   38   36   41   45   37   38   36   37   37    35
  23  |    7   28    9   11   25    6   19    8    6   18    4 |    20   39   24   24   40   23   29   19   22   20    20
 X24  |   16  ---  ---  ---  ---   48  ---   14   22  ---   12 |    27  ---  ---  ---  ---   39  ---   30   27  ---    27
 X25  |    8   18   11    8  ---    7   14   13    8  ---    4 |    15   22   20   17  ---   17   23   19   18  ---    15
  26  |    9   10    7    9   19    6   14    9    9   26    4 |    19   22   20   14   28   15   26   19   22   35    19
  27  |   10   20    7   11   17    6   14    9    8   25    4 |    13   26   20   19   27   15   19   16   18   27    14
  28  |   10   17    9   11   37    4   18    8    8   12    4 |    20   31   22   18   48   21   30   16   21   18    18
  29  |    7   16   10   10   21    6   13    9    7   35    4 |    21   27   28   23   30   23   23   27   23   30    22
  30  |    6   14    6   10   10    5   12    8    7   18    3 |    55   61   59   55   64   56   63   57   57   67    58
  31  |    7   19    8    9   33    7   19   14   10   13    4 |    12   29   15   15   39   12   24   13   13   12    12
  32E |   14   24   12   13   17    6   15   21   20   15    6 |    44   47   45   40   54   41   48   42   53   41    43
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |   10   20    9   10   23    6   18   12   10   22      |T   24   33   29   25   37   25   30   26   26   28    24
 WRMS |    9   20    9   10   22    6   16   10    7   19      |NE  21   31   25   23   35   23   28   23   23   25    22
 MEDI |   10   19    9   10   21    6   16    9    8   18      |MD  21   32   24   23   39   23   29   22   23   25    22

Table 3.1561.1   GPS week: 1561   Day: 1   MJD: 55172.000                            

        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  |   13   28  ---  ---  ---   18  ---   16   14  ---    9 |    20   34  ---  ---  ---   34  ---   29   35  ---    26
   2  |   10   26   10   12   20    7   23   15   12   21    5 |    11   31   14   16   34   14   30   11   18   13    12
   3  |    7   12   12    7   14    5   10   12    9   22    4 |    11   16   14   12   17   11   15   14   18   15    11
   4  |    9   13    6    9   25    6    7    8    8   28    4 |    19   19   21   19   30   19   21   18   23   27    18
  X5E |   15   28  221   15   22   12  ---   38    9  ---   11 |    21   29  157   23   27   21  ---   26   24  ---    17
   6  |    7   10   15    7   16    5    8   14   10   20    4 |    14   16   16   15   15   13   14   18   20   16    13
   7  |    7   22   10   10   26    5   17    7    5   12    4 |     9   25   14   12   17   11   19   10   14   10    10
   8  |   11   21   11   10   21    5   13   16   11   19    5 |     8   24   12   14   30   10   20   17   20   16     9
   9  |    8   21    8   10   14    4   13   10   14   25    4 |    18   27   20   18   27   19   23   19   26   28    17
  10E |    9   23   12   10   15   15   21   18   23   11    6 |    23   33   34   29   40   29   35   31   40   30    28
  11  |    6   19   10    7   22    3   15    4    7   17    3 |    24   30   25   24   39   23   29   24   29   22    23
  12  |    8   27   11    8   22    4   24   12    7   17    5 |    20   36   21   21   34   21   31   21   25   22    20
  13  |    6   20   11    8   30    8   18   10    8   13    4 |    14   29   17   16   45   17   28   16   21   15    16
  14  |    8   20   13    7   27    6   19    8   12   15    4 |    13   29   21   17   36   17   25   18   27   17    18
  15  |    7   25   14    9   26    9   24    8   14   23    5 |    17   31   23   18   39   22   27   16   21   22    16
  16  |    8   24   13    8   25    5   24    9   10   15    4 |    18   33   20   18   38   19   33   17   26   20    20
  17  |    8   14    9   10   21    8   13   11   11   32    4 |    16   25   21   25   35   18   25   18   26   38    21
  18E |    9   19   13    8   18    5   24   11    8   12    4 |    38   38   36   37   33   37   42   37   44   41    38
  19  |    6   14    9    6   17    5   10    5    9   25    3 |    14   13   17   14   19   12   12   17   20   14    13
  20E |    7   19   13    8   12    5   23    8   10   14    4 |    18   21   21   21   27   18   25   15   22   23    16
  21  |    9   19   15    9   27    6   22   13    8   31    5 |    19   32   28   20   46   22   35   21   26   19    21
  22E |    9   14   11   10   22    6   23    7   10   11    4 |    37   37   36   41   42   38   43   43   45   41    40
  23  |    8   28   13    9   20    7   20    8    6   19    4 |    17   33   19   16   36   16   27   18   23   21    17
 X24  |   22   24  ---  ---  ---   22  ---   16   49  ---   17 |    18   25  ---  ---  ---   28  ---   26   32  ---    22
 X25  |    9   17   13    6  ---    6   13   14    7  ---    4 |    11   22   16   12  ---   14   21   21   21  ---    12
  26  |    8   14   14    8   14    6   11   10    9   24    4 |    12   26   23   17   28   17   23   17   23   33    17
  27  |    7   20   10   10   16    5   13    8   13   24    4 |    10   24   19   18   26   15   17   17   22   26    14
  28  |    9   15   12    7   33    4   16    8    8   14    4 |    17   27   20   17   46   20   27   17   27   18    18
  29  |    6   18   17    7   18    5   15    8    9   33    5 |    18   28   32   22   27   20   23   23   24   26    21
  30  |    6   15   12    7   11    6   12    7   10   16    3 |    71   77   79   76   76   75   76   71   77   76    74
  31  |    7   20   11    6   31    5   17    6    7   12    3 |    10   25   15   14   37   14   23   13   23   14    14
  32E |   12   27   15   10   20    8   16   19   25   16    6 |    43   45   45   40   59   42   49   42   52   44    42
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |    8   20   12    9   22    6   18   11   11   20      |T   19   29   28   22   34   22   28   22   27   25    21
 WRMS |    8   20   12    9   21    6   16    9    8   20      |NE  17   28   21   19   33   20   26   20   25   22    18
 MEDI |    8   20   12    8   21    6   16   10    9   17      |MD  17   28   21   18   34   19   25   18   24   22    17

Table 3.1561.2   GPS week: 1561   Day: 2   MJD: 55173.000                            

        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  |   13  ---  ---  ---  ---   14  ---   21   11  ---   11 |    21  ---  ---  ---  ---   24  ---   27   22  ---    22
   2  |   10   23    7   12   27    6   18   18   11   21    5 |    17   31   20   18   36   19   29   19   16   14    16
   3  |    9   12    9    8   14    6    8   12    9   23    4 |    15   17   16   17   18   16   16   17   20   19    15
   4  |   11   11    9    9   25    7    7   13   10   27    4 |    28   22   33   25   31   27   25   28   24   35    25
   5E |   10   19   13    9   19    4   20   12    8   10    4 |    22   27   58   18   26   21   28   23   21   23    19
   6  |    8   11    9    6   20    5    7   13    8   21    3 |    18   18   17   17   21   18   17   22   20   20    18
   7  |    8   21    9   11  ---    5   16    9    7   12    4 |    13   25   15   10  ---   15   21   13   13   12    11
   8  |   12   25   11   10   19    7   14   20    7   20    5 |    12   26   16   15   32   15   22   25   17   20    13
   9  |    9   24   11    8   17    7   15   12   11   22    5 |    13   29   19   19   27   18   23   19   22   27    15
  10E |    9   22   23    8   27    9   22   13   23   11    6 |    22   32   34   25   36   24   37   21   29   26    22
  11  |    7   17    9    6   23    5   13    9    8   17    4 |    31   32   29   28   41   31   32   30   32   27    28
  12  |   10   21   15   11   23    4   18   15    9   17    5 |    24   31   24   20   35   24   29   21   25   23    21
  13  |    7   21   15   13   31    7   16   15    7   12    5 |    19   32   21   19   47   19   29   23   22   18    19
  14  |   10   20   14    8   27    5   16    8    9   17    4 |    17   30   25   21   35   19   28   19   23   23    20
  15  |    8   21   14    9   22    8   18   12   10   22    5 |    19   30   23   17   40   19   27   20   21   23    17
  16  |   10   21   13    8   24    6   19   11    6   16    4 |    22   37   28   23   40   23   33   20   23   25    23
  17  |    9   14    9   16   21    7   14   11   10   30    5 |    21   25   27   35   27   23   25   21   19   38    23
  18E |   10   16   12   12   34    7   23   16    9   14    5 |    38   39   38   37   49   37   42   36   35   38    36
  19  |    7   14    8    8   19    5    9    6    9   26    4 |    21   19   17   21   20   21   17   25   22   23    20
  20E |    7   13   12   12   15    5   20   16    8   13    4 |    22   25   23   19   27   22   28   28   24   24    21
  21  |   14   20    8   12   26    5   19   12    8   29    5 |    21   31   24   20   38   19   33   20   18   20    19
  22E |   13   16   13   11   23    5   20   12    9   10    5 |    31   32   32   33   33   31   34   34   34   33    32
  23  |    8   26   12   11   23    7   19   12    6   17    5 |    20   35   20   18   38   20   29   24   24   21    20
 X24  |    9   27  ---  ---  ---   10  ---   16  ---  ---   11 |    23   23  ---  ---  ---   35  ---   28  ---  ---    21
 X25  |    7   17   11    6  ---    4   11   17    7  ---    4 |    16   22   18   19  ---   19   22   27   21  ---    17
  26  |    9   14   12    8   15    5    9    9    8   25    4 |    22   30   27   25   33   25   28   26   28   41    25
  27  |   10   22   10    8   16    6   16   13    9   22    5 |    13   28   19   19   30   18   20   21   18   28    14
  28  |    8   15   10    6   34    5   12    6    7   13    3 |    17   30   21   17   44   19   27   17   20   18    18
  29  |   10   14   14    8   19    6   15   13    7   34    5 |    20   21   28   19   22   21   23   21   21   25    18
  30  |    9   16    9    7   15    6   13   11    8   16    4 |    47   49   49   48   47   46   49   45   44   48    45
  31  |    6   16   14    7   28    5   16    8    7   13    4 |    12   24   17   15   35   14   21   14   17   18    13
  32E |   14   25   15   10   20    6   13   17   21   16    6 |    49   49   50   45   52   45   51   51   50   45    47
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |   10   19   12   10   23    6   16   13   10   20      |T   22   29   26   22   34   23   28   24   24   26    21
 WRMS |    9   19   12   10   22    6   14   12    7   18      |NE  20   27   23   21   33   21   26   22   22   24    19
 MEDI |    9   19   11    8   22    6   16   12    8   17      |MD  21   30   23   19   35   21   28   22   22   23    20

Table 3.1561.3   GPS week: 1561   Day: 3   MJD: 55174.000                            

        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   19  ---  ---  ---   14  ---   20   14  ---    9 |    23   39  ---  ---  ---   27  ---   35   37  ---    29
   2  |    9   21   11   11   28    6   20   19    7   24    5 |    17   31   18   18   38   17   31   19   20   21    17
   3  |    4   11   12    9   15    7   10   13    8   22    4 |    14   21   17   18   27   16   19   19   19   18    15
   4  |   10    9   11    6   21    4    8   16    9   26    4 |    28   25   30   27   39   26   26   29   29   30    27
   5E |    9   17    9    7   23    3   21   13   11   13    4 |    21   31   25   27   36   24   30   24   25   29    24
   6  |    4    8   10    6   14    7   10   12    8   21    3 |    18   21   21   22   26   20   20   24   24   20    19
  X7  |    4  ---  ---  ---  ---   20  ---  ---  ---  ---    0 |     9  ---  ---  ---  ---   16  ---  ---  ---  ---    10
   8  |   12   23    8    8   14    5   16   18   10   22    5 |    11   28   18   14   30   13   24   21   15   20    14
   9  |    9   21    8    9   16    5   17   14   10   23    5 |    24   33   27   27   33   26   29   28   28   38    24
  10E |    9   19   20   12   16    6   19   14   21   12    6 |    21   36   37   29   38   26   36   24   27   30    25
  11  |    6   18    9    8   25    5   15   13   11   18    4 |    31   35   37   33   41   30   32   32   34   29    31
  12  |    7   19   10    9   23    5   20   14    7   18    4 |    25   37   26   24   39   25   34   28   25   30    25
  13  |    5   19   11    7   26    4   17   16    9   14    4 |    22   36   28   25   48   24   31   24   26   22    24
  14  |    8   20   12    8   26    3   21   11    7   17    4 |    16   29   23   21   36   20   28   21   24   24    20
  15  |    6   21   10    9   23    7   21   15    7   22    5 |    19   32   25   23   41   23   29   22   23   27    21
  16  |    6   22    9    7   23    6   22   15    6   19    4 |    25   40   28   24   43   25   36   24   30   27    26
  17  |   10   14   14   18   21    8   16   11   13   31    5 |    22   26   30   35   29   23   25   21   27   37    26
  18E |    6   12    9    9   30    7   22   15   11    7    4 |    30   34   34   34   44   31   34   30   34   31    30
  19  |    7   10   10    6   21    6   11   10    9   26    4 |    21   23   25   24   28   23   19   27   27   24    22
  20E |    6   15    9   10   13    4   18   12    7   11    4 |    23   25   24   27   30   25   29   25   24   24    23
  21  |    8   19    9    9   24    6   19   10    7   27    4 |    24   36   30   23   47   28   38   25   31   24    27
  22E |    9   15   12    7   46    7   22   14   12   10    4 |    31   35   37   33   43   30   32   29   32   30    31
  23  |    8   26   11   11   20    6   19   14    7   19    5 |    25   42   26   27   40   27   33   26   26   26    25
 X24  |   11  ---  ---  ---  ---   71  ---   24  ---  ---   17 |    30  ---  ---  ---  ---   62  ---   41  ---  ---    33
 X25  |    7   19    8    8  ---    4   11   18    9  ---    4 |    19   28   22   22  ---   22   25   25   24  ---    20
  26  |    6   14   10    8   21    5   12   12    5   25    4 |    18   29   24   23   33   23   26   25   25   39    23
  27  |    8   19    7    7   14    4   14   14    9   23    4 |    17   26   22   22   28   20   19   24   24   34    19
  28  |    8   16    9    6   30    5   15   12    9   15    4 |    22   30   23   21   45   21   28   18   20   22    20
  29  |    7   14    9   10   15    9   12   20    7   34    5 |    24   26   25   26   30   24   24   32   26   33    25
  30  |    6   16    8   10   15   11   14   15    8   29    4 |   123  124  126  125  124  123  123  123  124  130   123
  31  |    4   16   12    6   23    4   13   10   13   12    4 |    14   29   19   19   39   20   25   18   22   21    17
  32E |   10   22   10   12   35    7   13   14   19   13    5 |    62   63   66   61   73   63   65   62   70   65    63
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |    8   17   11    9   23    6   17   14   10   21      |T   25   35   30   29   41   28   32   29   30   32    27
 WRMS |    7   17   11    9   22    6   15   14    8   20      |NE  24   34   29   27   40   27   31   29   29   31    26
 MEDI |    7   18   10    8   21    6   16   14    9   19      |MD  22   31   25   24   38   24   29   25   26   27    24

Table 3.1561.4   GPS week: 1561   Day: 4   MJD: 55175.000                            

        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  |   15   26  ---  ---  ---   19  ---   17   13  ---    9 |    20   37  ---  ---  ---   28  ---   28   31  ---    25
   2  |   10   22   10   11   23    5   21   20   12   24    5 |    13   28   20   19   36   15   29   13   19   17    15
   3  |    4   10   11    9   12    6   10   11    9   23    4 |    11   16   11   17   20   11   14   16   14   17    10
   4  |    8   10    8    9   20    5    8   15   12   21    4 |    21   25   27   25   33   24   22   27   28   27    24
   5E |    7   17    9   11   19    2   20   14    9   12    4 |    16   22   20   21   29   18   24   17   24   21    18
   6  |    4   10   12    7   21    5    8   12   10   22    4 |    14   17   11   18   20   14   14   21   18   17    13
   7  |    6   20   12   17   18   11   19   11    8   16    5 |     8   24   12   15   24   10   19   12   15   12    10
   8  |   12   17    9   10   19    7   13   19    8   20    5 |    12   22   15   15   27   12   19   21   17   20    13
   9  |    8   21   10   10   18    5   13   12    8   23    4 |    14   25   13   13   27   11   18   18   16   29    11
  10E |    9   17   17    9   14    7   17   16   17   13    5 |    28   39   42   32   44   33   42   32   35   36    32
  11  |    5   17    8   10   22    3   15   13    7   18    4 |    26   33   28   23   37   23   26   28   26   23    24
  12  |    6   22   10    9   24    4   20   13   10   18    4 |    19   32   19   13   38   18   28   20   21   22    18
  13  |    6   18   15   11   26    8   19   16   11   14    5 |    15   30   20   20   45   16   26   15   21   12    15
  14  |    8   18   12    8   22    4   18   12    9   17    4 |    12   27   20   15   36   15   24   17   22   22    17
  15  |    5   24    9    9   24    7   18   15    9   19    4 |    16   32   19   17   35   17   24   20   23   23    17
  16  |    8   28    9    8   27    6   24   15    7   17    5 |    21   38   19   17   38   16   33   18   22   20    19
  17  |    9   12   11   12   20    7   15    9   15   31    5 |    20   25   25   28   32   24   24   21   31   37    24
  18E |    7   17   14   10   24    5   23   13    6    7    4 |    25   31   34   30   29   28   33   30   30   32    28
  19  |    6   13    7   10   18    5   12   14    8   27    4 |    16   22   18   21   24   18   16   26   18   22    16
  20E |    5   16    8   12   10    6   18   14    8   14    4 |    16   27   24   24   31   17   24   17   19   24    18
  21  |   11   18   10    7   24    5   19   11    7   28    5 |    19   29   19   12   39   17   31   15   21   17    17
  22E |    9   19   13    7   49    5   22   14    7   10    4 |    18   27   25   21   40   21   26   21   24   22    20
  23  |    7   24   12   11   19    9   19   14    9   18    5 |    15   33   22   19   37   16   25   16   18   15    15
 X24  |   12   21  ---  ---  ---   15  ---   24  ---  ---   13 |    20   24  ---  ---  ---   32  ---   27  ---  ---    20
 X25  |    5   18    9    8  ---    7   13   17    7  ---    4 |     8   20   13   14  ---   10   18   15   16  ---     8
  26  |    7   13   11    9   18    4   11   11    7   25    4 |    14   27   18   17   32   15   24   20   21   38    18
  27  |    7   22    9   11   16    5   13   14    9   24    4 |    10   26   11   13   26   11   16   19   14   29    10
  28  |    6   18   10    9   29    4   15   10    6   11    3 |    18   31   25   19   47   20   29   21   20   20    20
  29  |    8   16   13    9   17    6   15   20    9   35    5 |    14   21   23   17   23   14   18   27   21   23    17
  30  |    7   19    7    9   19    5   13   10    9   16    4 |    48   54   50   44   50   47   53   49   54   53    50
  31  |    5   16    9   11   24    6   16   11   10   13    4 |    11   23   16   12   37   11   20   15   16   17    12
  32E |   13   31   12   16   18    9   12   14   16   15    6 |    53   62   62   55   74   49   59   54   49   50    53
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |    8   19   11   10   22    6   17   14   10   20      |T   18   29   22   20   34   19   25   22   23   24    19
 WRMS |    7   19   10   10   20    6   15   13    7   22      |NE  16   27   19   18   33   17   23   20   21   23    17
 MEDI |    7   18   10    9   20    5   15   14    9   18      |MD  16   27   20   18   35   17   24   20   21   22    17

Table 3.1561.5   GPS week: 1561   Day: 5   MJD: 55176.000                            

        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   20  ---  ---  ---   17  ---   18   12  ---    8 |    18   32  ---  ---  ---   19  ---   26   20  ---    20
   2  |   10   21   11   10   26    6   21   21    9   25    5 |    14   26   19   17   34   16   27   15   14   19    13
   3  |    5   14    8    9   11    8   11    7    7   23    3 |    12   19   14   15   22   15   18   15   14   15    11
   4  |    7   11    9    6   23    5   10   13    6   19    3 |    21   22   25   22   35   24   22   26   24   25    21
   5E |    7   22   11    9   21    4   20   13    8    9    4 |    12   21   26   16   29   13   20   14   14   15    12
   6  |    8   11    7    5   22    5   11   10    7   22    3 |    17   16   16   16   23   17   18   20   15   16    13
   7  |    6   22    6   12   20    7   19    8    5   17    4 |    11   27   14   11   25    9   22    9    7    8     9
  X8  |    7  ---   12  ---  ---   31  ---  ---  ---  ---   10 |     7  ---   22  ---  ---   27  ---  ---  ---  ---     5
   9  |   10   20    7   11   18    3   13   11    8   24    4 |    19   28   17   18   29   16   22   20   19   29    16
  10E |   12   23   19   11   23    7   17   15   15   14    5 |    34   42   45   35   53   33   43   33   38   38    36
  11  |    6   19    4    9   24    6   19   11   10   18    4 |    27   30   27   27   39   26   27   31   30   25    25
  12  |    6   24    9   10   24    3   19   10    7   18    4 |    16   30   16   14   35   17   26   18   15   21    14
  13  |    6   19    8    8   27    6   19   10    7   15    4 |    16   30   24   17   46   19   28   15   18   16    16
  14  |    8   17    9    6   27    6   19   12    9   17    4 |    13   27   27   17   39   16   26   18   15   22    16
  15  |    5   18    6   13   26    5   18   15    9   24    4 |    16   28   18   18   37   16   25   20   18   23    15
  16  |    7   26    7    7   26    5   22   16    9   18    5 |    18   34   17   15   35   15   28   18   16   18    15
  17  |    7   12    9   14   19    3   17    7    8   31    4 |    19   26   26   27   31   24   25   21   25   38    22
  18E |    7   14   10    9   25    6   21   15   10   10    4 |    18   25   22   19   31   17   25   17   25   17    20
  19  |    7   16    6    6   18    5   11   15    5   30    4 |    18   23   20   21   25   22   19   28   20   23    18
  20E |    5   19    7    9   12    5   17   12    9   10    4 |    19   24   19   17   24   18   24   19   21   20    16
  21  |   10   19    9   10   29    4   19    9    6   34    5 |    18   30   21   14   39   17   30   15   18   20    17
  22E |    9   19    6    8   38    7   18   13    9   13    4 |    20   25   18   18   39   16   24   21   23   20    18
  23  |    6   25    8    8   21    6   21   14    8   19    4 |    20   34   25   19   36   21   29   20   20   20    19
 X24  |   18   47  ---  ---  ---   45  ---   19   30  ---   15 |    24   56  ---  ---  ---   53  ---   28   26  ---    27
 X25  |    5   15    7    9  ---    5   12   12    6  ---    3 |    14   18   17   16  ---   16   20   16   16  ---    12
  26  |    6   15    7    9   20    5   10   10    8   25    4 |    14   27   21   17   30   16   23   17   16   37    15
  27  |    8   21    6    9   17    3   12   12    8   25    4 |    12   26   14   17   28   13   18   18   15   28    12
  28  |    6   17    8    8   27    4   16    7    7   15    3 |    19   32   22   20   48   21   32   18   22   20    20
  29  |    6   13   14   10   20    5   12   18    8   35    5 |    19   20   25   19   28   18   21   27   22   26    19
  30  |    7   17    9   12   16    5   15   14    8   16    4 |    72   75   72   75   72   74   75   72   73   73    72
  31  |    5   17    8   10   27    6   17   11   12   13    4 |    11   24   16   15   37   11   22   16   10   16    10
  32E |    9   27    7   16   16    8   17   11   17   13    5 |    66   70   71   64   77   64   71   66   61   70    65
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |    7   19    9   10   23    5   17   13    9   21      |T   20   30   24   21   36   22   27   23   22   25    19
 WRMS |    7   19    8   10   24    5   16   11    8   19      |NE  18   29   22   20   35   21   26   21   20   24    18
 MEDI |    7   19    8    9   22    5   17   12    8   18      |MD  18   27   21   17   35   17   25   19   19   20    16

Table 3.1561.6   GPS week: 1561   Day: 6   MJD: 55177.000                            

        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   33  ---  ---  ---   14  ---   18   13  ---   10 |    25   41  ---  ---  ---   31  ---   28   33  ---    27
   2  |    9   20   11   11   31    5   21   22   12   28    6 |    19   31   22   21   38   19   32   17   17   23    17
   3  |    8   10    7    8   15    5   10   10    9   25    3 |    14   17   18   18   21   13   18   20   17   19    15
   4  |    9   10    9    6   25    3   10   17    6   20    4 |    30   29   36   30   34   30   29   32   33   28    30
   5E |    9   20   11    8   17    4   18   14    9   10    4 |    16   26   26   16   29   18   25   17   18   20    15
   6  |    8   10    8    9   21    6   10   10    8   23    3 |    21   19   21   22   21   18   19   26   21   20    19
   7  |    5   17   11    8   22    4   15   13    8   18    4 |    11   22   10   11   25   10   18   11   13   11    10
  X8  |   10  ---   11    9  ---    6   16   15    9   24    5 |     7  ---    6    5  ---   10   10    5    7    5     6
   9  |    8   17    7    9   19    4   13   12    7   24    4 |    14   26   20   18   28   16   20   19   18   27    15
  10E |   11   19   18   16   13    6   13   16   15   13    5 |    34   43   50   35   51   40   48   39   38   40    37
  11  |    6   19    7    7   21    5   15   14   10   17    4 |    33   35   35   33   41   31   32   36   34   29    30
  12  |    7   27   10   11   22    4   19   11    6   20    5 |    26   42   25   21   35   25   33   27   24   28    25
  13  |    5   16   10    8   29    4   15   13    6   16    4 |    17   28   19   17   44   17   28   15   19   14    17
  14  |    9   23    7    6   30    6   20   11   10   19    4 |    15   29   21   17   38   16   27   19   22   24    18
  15  |    6   23   17   12   27    5   22   16    9   21    5 |    19   29   26   18   41   19   27   22   21   23    17
  16  |    6   27   10    9   26    5   21   15   11   22    5 |    26   43   25   23   42   26   37   23   29   26    25
  17  |    8   10   10   15   22    4   14    7    7   33    4 |    24   26   31   34   33   29   26   25   26   41    26
  18E |    8   17   13   12  ---    5   19   15    9    9    4 |    19   29   31   22  ---   22   29   24   23   27    22
  19  |    8   12   11    7   18    4   12   17   10   28    4 |    23   21   27   25   25   22   20   33   26   23    23
  20E |    6   18    8    8   17    5   13   12    6   12    3 |    13   23   19   13   24   13   19   15   15   17    13
  21  |   11   20   11   10   25    6   20   11    7   37    5 |    19   33   23   15   38   17   33   13   20   21    18
  22E |    8   14    6    7   19    5   17   11    7   13    3 |    23   29   25   27   37   24   31   23   27   27    25
  23  |    7   24   11   11   22    5   17   18    8   20    5 |    18   32   20   20   35   18   26   21   21   19    18
 X24  |   14   16  ---  ---  ---   34  ---   14   21  ---    9 |    30   30  ---  ---  ---   56  ---   33   36  ---    32
 X25  |    5   16    8    7  ---    5   14   14    8  ---    4 |    14   21   18   15  ---   15   22   19   19  ---    15
  26  |    7   13    7    9   17    4   10   11    5   27    4 |    13   21   18   16   27   14   22   16   20   35    16
  27  |    7   18    7    8   20    4   13   13    7   26    4 |     9   23   18   18   28   15   17   20   17   29    13
  28  |    7   19    7    9   27    4   16   11   11   19    4 |    26   36   30   21   44   26   32   21   19   25    24
  29  |    6   13   11   10   18    4   14   20    7   37    5 |    21   24   31   23   29   22   23   27   23   30    22
  30  |    8   15    8   13   18    3   16   15    8   17    4 |    61   64   63   64   60   62   61   60   57   64    60
  31  |    6   17    9   10   32    4   15   10    8   15    4 |    12   25   13   17   39   14   25   16   17   18    13
  32E |   11   23   10   12   18    6   15   13   11   16    5 |    70   71   71   72   70   69   73   74   77   76    71
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |    8   18   10   10   22    5   16   14    9   22      |T   22   31   26   23   36   24   28   24   25   27    22
 WRMS |    7   18   10   10   21    5   15   13    7   21      |NE  21   29   24   21   34   22   26   23   23   25    21
 MEDI |    8   17   10    9   21    5   15   13    8   20      |MD  19   29   23   20   35   19   26   21   21   25    18



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 4.1561   GPS week: 1561   MJD: 55171.0-55177.0

CENT| CLK EPO  |        BRUS       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3053 |U    7     8    23 |U   38    39   142 |U    9    11    22 |
emr | emr 2975 |    18    12    45 |U   40    40   143 |    10    11    22 |
esa | esa 2852 |     8     9    25 |U   34    31    99 |     9    10    21 |
gfz | gfz 2798 |U   21    15    56 |U   39    41    97 |    19    21    44 |
grg | grg 2715 |    10    10    31 |U   38    44   136 |    10    11    23 |
igr | igr 2845 |    12    13    31 |    39    37   120 |    10    14    28 |
igs | igs 2948 |    13    10    33 |    38    41   143 |     9    12    23 |
jpl | jpl 2828 |U   14    12    37 |U   23    30   122 |U    9    12    24 |
mit | mit 3044 |U   13    10    33 |U   34    42   121 |U   10    13    24 |



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 5.1561.0   GPS week: 1561   Day: 0   MJD: 55171.0

CENT| CLK EPO  |        BRUS       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3054 |     7     7    17 |     9    12    28 |     9    12    17 |
emr | emr 2968 |    12    15    24 |     9    10    34 |     9     9    21 |
esa | esa 2880 |     8    11    21 |     9    12    31 |     8    10    17 |
gfz | gfz 2829 |    14    11    43 |    12    16    45 |    18    18    35 |
grg | grg 2784 |     8    10    23 |     9    14    35 |     9     8    19 |
igr | igr 2848 |    19    24    35 |    15    17    46 |    15    18    51 |
igs | igs 2935 |     9    10    19 |     9    12    28 |     8     9    17 |
jpl | jpl 2870 |    10    13    24 |    10    12    34 |     8     9    19 |
mit | mit 3072 |    10    11    23 |    10    14    36 |     9     9    18 |

Table 5.1561.1   GPS week: 1561   Day: 1   MJD: 55172.0

CENT| CLK EPO  |        BRUS       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3052 |     6     7    26 |   221   217   831 |     7     8    19 |
emr | emr 3059 |    11     8    31 |   225   225   795 |    11    11    20 |
esa | esa 2880 |     7     8    28 |   192   164   524 |     9    10    18 |
gfz | gfz 2826 |    17    16    33 |   201   202   387 |    20    25    42 |
grg | grg 2784 |     7     8    31 |   204   241   746 |    10     9    22 |
igr | igr 2771 |    10     7    32 |   212   198   633 |     9    10    19 |
igs | igs 3009 |     7     6    29 |   223   234   831 |     8     9    19 |
jpl | jpl 2771 |    11    10    45 |   113   150   666 |     9     9    19 |
mit | mit 3072 |     8     7    23 |   190   239   658 |     9     9    23 |

Table 5.1561.2   GPS week: 1561   Day: 2   MJD: 55173.0

CENT| CLK EPO  |        BRUS       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3059 |     7     5    24 |     6    10    25 |     8    11    25 |
emr | emr 2960 |    12     6    22 |     8     8    29 |    10    12    26 |
esa | esa 2880 |     8     6    23 |     6     7    23 |     9    12    22 |
gfz | gfz 2824 |    16    12    69 |    14    15    45 |    15    15    43 |
grg | grg 2688 |    10    12    29 |     9    10    33 |    11    16    28 |
igr | igr 2770 |    14    17    30 |    12    11    31 |    14    21    36 |
igs | igs 3011 |    10     6    24 |     8    10    28 |    11    15    33 |
jpl | jpl 2869 |    11     7    28 |     7     7    26 |     9    11    23 |
mit | mit 3072 |    11     7    32 |     7     7    23 |    12    15    28 |

Table 5.1561.3   GPS week: 1561   Day: 3   MJD: 55174.0

CENT| CLK EPO  |        BRUS       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3066 |     7    11    29 |     6     9    21 |     9    13    21 |
emr | emr 2871 |    13    12    34 |     6     9    32 |    11    14    25 |
esa | esa 2784 |     8    10    28 |     6     8    24 |     8     9    18 |
gfz | gfz 2729 |    14    17    50 |    14    14    47 |    16    20    36 |
grg | grg 2688 |    10    10    33 |    10     9    38 |    12    13    22 |
igr | igr 2808 |    14    16    32 |     7     7    23 |     8    13    22 |
igs | igs 2850 |    15    16    31 |     6     7    23 |     9    14    28 |
jpl | jpl 2775 |    16    16    37 |     6     9    31 |    11    16    30 |
mit | mit 2976 |    13    13    32 |     7     7    26 |    10    17    33 |

Table 5.1561.4   GPS week: 1561   Day: 4   MJD: 55175.0

CENT| CLK EPO  |        BRUS       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3059 |     8     9    25 |     7     7    24 |     8    11    24 |
emr | emr 3060 |    11    12    41 |     9     9    32 |     8     9    16 |
esa | esa 2880 |     9     9    23 |     7     7    27 |     8     9    20 |
gfz | gfz 2824 |    46    22    86 |    13    13    72 |    25    19    61 |
grg | grg 2784 |    10    12    29 |    10    10    26 |     8    13    19 |
igr | igr 2929 |    12    12    31 |     8     7    29 |     8    12    20 |
igs | igs 3022 |    11    11    33 |     7     7    26 |     8    11    22 |
jpl | jpl 2869 |    13    12    30 |     9     9    33 |     8    11    26 |
mit | mit 3072 |    10    10    24 |     8     9    36 |     9    12    19 |

Table 5.1561.5   GPS week: 1561   Day: 5   MJD: 55176.0

CENT| CLK EPO  |        BRUS       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3055 |     9     7    28 |     7    11    29 |     8     8    23 |
emr | emr 2958 |    32    16    83 |    10    11    38 |    10    12    24 |
esa | esa 2784 |    10     9    34 |     6     9    29 |    10    12    26 |
gfz | gfz 2730 |    32    21    86 |    10    13    39 |    23    32    62 |
grg | grg 2688 |    13    12    43 |     9    10    38 |    11    13    28 |
igr | igr 2843 |     9     7    38 |     8     9    32 |    11    16    27 |
igs | igs 2849 |    30    13    78 |     8     8    32 |    10    13    25 |
jpl | jpl 2775 |    31    14    78 |     8     9    34 |    12    13    33 |
mit | mit 2976 |    30    14    77 |     8     9    35 |    12    15    26 |

Table 5.1561.6   GPS week: 1561   Day: 6   MJD: 55177.0

CENT| CLK EPO  |        BRUS       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3031 |     7     8    16 |     9    10    37 |    10    11    23 |
emr | emr 2950 |    32    14    80 |    11    12    39 |    10    12    24 |
esa | esa 2880 |     7     8    20 |     8    11    34 |     9    11    23 |
gfz | gfz 2830 |    11     9    26 |    11    13    42 |    15    19    31 |
grg | grg 2592 |    12     9    27 |    11    11    35 |     9     8    22 |
igr | igr 2950 |     8     9    17 |     9    12    44 |     7    11    18 |
igs | igs 2960 |     8     9    16 |     8    10    32 |    10    13    19 |
jpl | jpl 2871 |     9     9    19 |    10    11    33 |     9    13    20 |
mit | mit 3072 |     6     7    17 |     9    10    33 |    11    16    20 |


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 6.1561   GPS week: 1561   MJD: 55171.500-55177.500

                                                         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      -6     -60      66      3 |       1     16
            |      23      33      97      98      5 |       5
emr   uuuuu |      18      11    -239    -175      3 |      48     49
            |      23      18      93      90      6 |       2
esa   uuuuu |     -12      22     183    -126     10 |     -16     23
            |      21      21      81      39     10 |       1
gfz   uuuuu |       5      27      31      -5    -12 |       1     15
            |      20       9      35      47      7 |       5
grg   --xxx |      --      --      38      81     -6 |      12     23
            |      --      --     169      20     29 |       2
igr   xxxxx |      10      27       4     -14      4 |      -7     15
            |      14      17      93      68      5 |       2
irf   xxxxx |     -14      -9      -5      23      6 |      -6     16
            |       6       9      53      17      6 |       2
jpl   uuuuu |      24     -15     -65      45      2 |      12     18
            |      22      19     104      84      9 |       2
mit   uuuuu |     -35      -1    -138     167     10 |      -3     18
            |      10      20     141     140      8 |       1
ngs   uuuuu |       9     -75       5       2     -3 |      -7     13
            |      34      42      97      64      7 |       1
sio   uuuuu |      23      93     111     128     10 |      16     23
            |      23      21     125     115     10 |       2


Table 7.1561.0   GPS week: 1561   Day: 0   MJD: 55171.500

                                                         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 |     -24      11     -82     250      8 |      -4      8
emr   uuuuu |      28     -13    -249    -149     10 |      46     46
esa   uuuuu |     -36      13     208    -139      5 |     -16     22
gfz   uuuuu |      31      19     -10      24      3 |       6     10
grg   --xxx |      --      --    -138      72    -39 |      15     24
igr   xxxxx |      15      47     -44      67     -3 |      -4     13
irf   xxxxx |      -3     -11      39       8     -7 |      -3     14
jpl   uuuuu |      19     -28     -93     170      6 |       8     14
mit   uuuuu |     -27      -7      34       1     -3 |      -1     17
ngs   uuuuu |       2     -35    -181      80     -6 |      -7     11
sio   uuuuu |      58      95     281      67    -10 |      16     21

Table 7.1561.1   GPS week: 1561   Day: 1   MJD: 55172.500

                                                         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     -22      40     -58      5 |      -3     10
emr   uuuuu |      48      36    -393       0      3 |      47     48
esa   uuuuu |     -25      -3     152     -85     15 |     -17     22
gfz   uuuuu |     -17      34      42      23    -16 |       7     10
grg   --xxx |      --      --     -70      76      2 |      11     23
igr   xxxxx |      12      32     -62      19     12 |      -5     12
irf   xxxxx |     -13      -8      69      28      7 |      -5     13
jpl   uuuuu |      72     -21    -236     144     18 |       9     15
mit   uuuuu |     -45      21      58     -62     16 |      -3     16
ngs   uuuuu |      22    -113     -42      62     -7 |      -6     11
sio   uuuuu |      28     115     261     -69     12 |      15     20

Table 7.1561.2   GPS week: 1561   Day: 2   MJD: 55173.500

                                                         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      31     -24     122      9 |      -4     11
emr   uuuuu |      41      14    -324    -257      8 |      47     47
esa   uuuuu |      -8       3     294    -186     10 |     -18     22
gfz   uuuuu |      18      27      23       8    -15 |       3     13
grg   --xxx |      --      --    -119      74    -20 |       9     23
igr   xxxxx |       2      18    -140       5      5 |      -7     12
irf   xxxxx |     -12     -21      27       1     11 |      -7     14
jpl   uuuuu |      22     -46     -98      -6      3 |      11     15
mit   uuuuu |     -24     -28    -116     174     16 |      -4     16
ngs   uuuuu |     -33     -11       4      24    -10 |      -8     14
sio   uuuuu |      31      66     142     169     14 |      14     20

Table 7.1561.3   GPS week: 1561   Day: 3   MJD: 55174.500

                                                         AC LOD  AC LOD
CENT  FLAG  |   Xpole   Ypole     Xrt     Yrt    LOD |    BIAS  BIAS RMS
            |   [uas]   [uas]   [uas/d] [uas/d]  [us]|    [us]    [us]
------------+----------------------------------------+------------------
cod   xxxxx |      14     -16    -248      44     -6 |      10     24
emr   uuuuu |       9      -9    -154    -267      5 |      50     52
esa   uuuuu |     -12      16     191    -134     -1 |     -14     23
gfz   uuuuu |     -21      39      15      16    -16 |       4     14
grg   --xxx |      --      --      47     127     16 |      12     24
igr   xxxxx |      12      32     100    -139      4 |      -5     15
irf   xxxxx |     -21       0     -65      42     12 |      -4     17
jpl   uuuuu |      17     -13      48      20     -4 |      14     20
mit   uuuuu |     -49      20    -277     255     19 |      -2     20
ngs   uuuuu |      63    -102      41      21      3 |      -6     14
sio   uuuuu |     -13     113      58      67     22 |      18     27

Table 7.1561.4   GPS week: 1561   Day: 4   MJD: 55175.500

                                                         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 |       0      36      20      18      1 |       5     21
emr   uuuuu |       2      18    -161    -173     -8 |      50     52
esa   uuuuu |      -5      21     261    -157     -3 |     -16     24
gfz   uuuuu |       4      21      -4     -60    -12 |       1     16
grg   --xxx |      --      --      49      72     35 |      10     22
igr   xxxxx |     -16      22      20     -20     -1 |      -6     16
irf   xxxxx |     -18       2     -19      47      8 |      -5     18
jpl   uuuuu |       8      -6     -22      55    -10 |      14     20
mit   uuuuu |     -39      14    -187     280     13 |      -2     20
ngs   uuuuu |      24     -93      21     -33      5 |      -6     14
sio   uuuuu |       3     110     -40     163     15 |      18     26

Table 7.1561.5   GPS week: 1561   Day: 5   MJD: 55176.500

                                                         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 |      17     -28     -24      15      5 |       1     20
emr   uuuuu |     -18       0    -237    -222      4 |      48     50
esa   uuuuu |      27      49     105     -93     14 |     -16     25
gfz   uuuuu |      25      12      85      40    -19 |      -3     18
grg   --xxx |      --      --     160      71     10 |      13     23
igr   xxxxx |      14      -4     127      27      5 |      -9     18
irf   xxxxx |     -17     -19     -12      10      6 |      -6     18
jpl   uuuuu |      20      -7    -118     -57     -4 |      13     20
mit   uuuuu |     -35     -27    -177     267      7 |      -3     20
ngs   uuuuu |     -32     -57      75    -107      2 |      -6     14
sio   uuuuu |      17      65      90     235      9 |      17     25

Table 7.1561.6   GPS week: 1561   Day: 6   MJD: 55177.500

                                                         AC LOD  AC LOD
CENT  FLAG  |   Xpole   Ypole     Xrt     Yrt    LOD |    BIAS  BIAS RMS
            |   [uas]   [uas]   [uas/d] [uas/d]  [us]|    [us]    [us]
------------+----------------------------------------+------------------
cod   xxxxx |       9     -53    -105      73      2 |       0     18
emr   uuuuu |      14      27    -153    -158     -3 |      47     50
esa   uuuuu |     -28      51      69     -86     26 |     -17     25
gfz   uuuuu |      -3      34      64     -83    -11 |      -8     21
grg   --xxx |      --      --     335      77    -43 |      13     23
igr   xxxxx |      30      43      24     -60      7 |      -9     18
irf   xxxxx |     -16      -5     -72      22      6 |      -8     18
jpl   uuuuu |       8      15      62     -10      3 |      12     20
mit   uuuuu |     -25       0    -302     253      5 |      -4     20
ngs   uuuuu |      20    -116     119     -32    -11 |      -7     15
sio   uuuuu |      36      88     -13     266      8 |      15     24



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