[IGSREPORT-18347] Wk 1571 IGS Final Orbits

Jim Ray IGS.ACC at noaa.gov
Thu Mar 4 05:24:59 PST 2010


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IGS Electronic Report   04 Mar 05:25:22 PST 2010      Message Number 18347
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Author:  AC Coordinator / NOAA NGS

sum-file Version 2.0
Final IGS Orbit Combination - Week 1571   (Feb 14, 2010 - Feb 20, 2010)

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:

igs1571[0-6].sp3  IGS GPS ephemeris files in SP3 format.
igs1571[0-6].clk  IGS GPS satellite and station clocks in clock RINEX format.
igs1571[0-6].cls  IGS GPS clock combination summary report.
igs15717.erp      Earth Rotation Parameters (ERP) and their rates as well as
                  Universal Time (UT1-UTC) and Length Of Day (LOD) associated 
                  with IGS ephemerides.
igs15717.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
                0  |  EMR   | 3 6 26 3 6 26 WTZR WTZR
                0  |  ESA   | ONSA ONSA UNSA
                0  |  GFZ   | 3 4 14 16 19 20 22 23 26 29 BRUS BUE1 CAS1 CHAT CHPI
                0  |  GFZ   | CHUR DAV1 FAA1 FAIR GLPS GLSV HARB KIT3 KOUC LPGS
                0  |  GFZ   | MAL2 MAS1 NYAL QAQ1 RABT RESO SCH2 SEY1 SSIA THU3
                0  |  GFZ   | TIDB TOW2 TRO1 VILL YELL YKRO
                0  |  GRG   | ONSA
                0  |  JPL   | 26 32 DGAR
                0  |  MIT   | 3 6 26 3 6 26
                0  |  NGS   | 1
                1  |  COD   | 3 3 6
                1  |  EMR   | 26 26
                1  |  ESA   | 3 6 3 6 KOKB CEDU
                1  |  GFZ   | 8 10 13 14 15 16 17 26 ALIC AREQ ASPA AUCK BAKO BJFS
                1  |  GFZ   | BRFT CAS1 CEDU CHAT DARW DAV1 FAIR GRAZ GUAM HARB
                1  |  GFZ   | HOB2 HRAO IRKT KARR KIRU KOUR MAL2 MAS1 MAW1 MCM4
                1  |  GFZ   | MDO1 NICO NTUS PERT PIE1 PIMO PRDS PRE1 RESO SFER
                1  |  GFZ   | SSIA SUTH SUTM THU3 TOW2 TSKB YKRO
                1  |  GRG   | ONSA
                1  |  JPL   | 26 DGAR UNSA
                1  |  MIT   | 26 26
                1  |  NGS   | 1
                2  |  ALL   | 1 6 1
                2  |  COD   | 20 20 AREQ
                2  |  EMR   | 3 3 17 19 23 26 29 WTZR
                2  |  GFZ   | 3 5 14 15 19 26 29 ADE1 ALGO ALRT AUCK BAKO BJFS
                2  |  GFZ   | BRAZ BRFT BUE1 CHAT CHUR DAEJ DGAR DUBO FAA1 GLPS
                2  |  GFZ   | GOLD HARB HOB2 HOFN HRM1 LPGS MAC1 MAS1 MDO1 METS
                2  |  GFZ   | NICO NRC1 NTUS NYA1 NYAL PRDS PRE1 QAQ1 RESO RIOP
                2  |  GFZ   | SANT SCUB SEY1 SSIA TOW2 UNSA WTZR WUHN YAKT YELL
                2  |  GRG   | ONSA
                2  |  JPL   | 3 17 23 26 29 32 DGAR
                2  |  MIT   | 2 3 24 2 3 24 26 HARB
                3  |  ALL   | 1
                3  |  COD   | NRIL
                3  |  EMR   | 3 6 20 3 6 20 26 WTZR
                3  |  ESA   | ALRT
                3  |  GFZ   | 3 5 10 11 14 15 17 22 23 26 AREQ ASPA AUCK BOGT BOR1
                3  |  GFZ   | BRFT BRUS BUE1 CHPI CHUR CONZ DARW GLPS GUAM HARB
                3  |  GFZ   | HOB2 KOUR LPGS MAL2 MAS1 MATE MCM4 NICO OHI2 PIMO
                3  |  GFZ   | QAQ1 RABT RIOP SANT SFER SHAO THU3 UNSA VILL WAB2
                3  |  GFZ   | WHIT WSRT WTZR YAKT YKRO
                3  |  GRG   | ONSA
                3  |  JPL   | 6 26 DGAR
                3  |  MIT   | 3 6 3 6 26 HARB
                4  |  ALL   | 1 1
                4  |  EMR   | 3 6 3 6 17 19 23 26 DRAO WTZR WTZR
                4  |  GFZ   | 3 10 13 14 15 17 22 23 ADE1 AREQ ARTU ASPA AUCK BOR1
                4  |  GFZ   | BRUS BUE1 CAS1 CHAT CHPI COCO CONZ DARW GLPS GLSV
                4  |  GFZ   | GRAZ HOB2 HRM1 HYDE KOUC KOUR LPGS MAC1 MAS1 MATE
                4  |  GFZ   | METS NICO NRIL OHI2 OUS2 PIE1 RABT RIOP SANT SFER
                4  |  GFZ   | TEHN TIDB TLSE TOW2 TRO1 UNSA VILL WSRT YAKT ZIMM
                4  |  GRG   | ONSA
                4  |  JPL   | 13 17 19 23 26 29 32 DGAR
                4  |  MIT   | 3 6 20 26 3 6 20 26 DAV1 DAV1 HARB
                5  |  ALL   | 1
                5  |  COD   | YAKT
                5  |  EMR   | 3 6 3 6 26 DRAO WTZR DRAO WTZR
                5  |  GFZ   | 3 10 13 14 15 17 23 26 29 30 ABPO ADE1 ALIC AREQ
                5  |  GFZ   | AUCK BAKO CHAT COCO DAEJ DARW DAV1 EIL1 FAIR GLSV
                5  |  GFZ   | GRAZ GUAM GUAT HARB HOLM HRM1 KERG KOUC KOUR LPGS
                5  |  GFZ   | MAC1 METS PERT PETP RABT RIOP SFER SHAO SYOG THU3
                5  |  GFZ   | TIDB TSKB VILL WSRT YAKT
                5  |  GRG   | ONSA
                5  |  JPL   | 3 6 26 32 DGAR GUAT
                5  |  MIT   | 3 6 3 6 20 26 HARB
                5  |  NGS   | 1
                6  |  ALL   | 1 1
                6  |  EMR   | 3 6 26 3 6 26 WTZR
                6  |  GFZ   | 8 14 18 19 23 29 AREQ ASPA AUCK CAS1 CHAT GLPS GUAM
                6  |  GFZ   | GUAT HOB2 HOLM HRAO HYDE KERG KOUR MAC1 MAS1 MCM4
                6  |  GFZ   | MDO1 NICO OUS2 PDEL PERT QIKI RESO SCUB SFER SUTH
                6  |  GFZ   | SUTM THU3 TOW2 TSKB XMIS YAKT YSSK
                6  |  GRG   | SPT0
                6  |  JPL   | 3 DGAR
                6  |  MIT   | 3 6 26 3 6 26 TOW2

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

 6. 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.

 7. Small rotations were applied to all the AC orbit and ERP values in order
    to align them to the IGS05 frame. These rotations were estimated in the IGS
    SINEX combination process, performed by the IGS Reference Frame Coordinator
    at the Institut Geographique National (IGN), and are based on the common
    stations between the individual AC SINEX solutions and the IGS05.snx SINEX
    frame. The estimated 7 transformations, from which only the 3 rotations are
    applied to the orbit and ERP values, are:
    
            |    DX     DY     DZ      RX     RY     RZ     SCL
     Centre |   [mm]   [mm]   [mm]   [uas]  [uas]  [uas]   [ppb]
     -------+---------------------------------------------------
       COD  |     .7    1.4     .8      -4     -3    -19    -.08
       EMR  |    4.1   -1.9    3.1     -33     51    -29     .41
       ESA  |    8.3    4.8    1.2      70    -68     12     .07
       GFZ  |     .7    1.3    1.1      21    -11    -11    -.08
       GRG  |    5.7    7.6   11.0      14      6     99     .77
       JPL  |    4.4   -1.0    7.8     -21    -19    -27     .34
       MIT  |    7.7   -5.7  -11.6     -16     12    -48     .15
       NGS  |    8.9   -1.4  -10.3     -17   -153     -8     .33
       SIO  |    9.9   -6.3  -11.2    -122   -196     13     .39


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

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

10. Starting 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 1.1571.a). It also displays the computed satellite
position sigmas for the combined orbits (table 1.1571.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 2.1571.[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 3.1571.[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 5.1571.0-6).

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 1571 summary.                       (Feb 14, 2010 - Feb 20, 2010)

Table 1.1571.a   GPS week: 1571   MJD: 55241.000-55247.000

         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  243|    0     0     4    -8   -65    -7  -.17    9    8 |    -215    -532     17     75
        |    0     0     0    15    12    17   .01           |     552     757
emr   88|   -1     0     6    58  -175   -24   .42   18   18 |    -585     879     22     87
        |    1     1     1    32    21    16   .03           |    1715    2149
esa  130|    1     0    -2  -110    -5    17   .23    8    7 |     136    -766     15    111
        |    1     1     1    30    17    15   .02           |     383    1365
gfz  198|    0    -1    -6   -48   -35    17  -.17   11   11 |     -80    1085     30    131
        |    0     1     1    37    46    11   .03           |     413    1826
grg  107|   -2     0     5   -37  -110     8   .99   25   23 |     -13     -47     61    214
        |    1     1     3    53    32    17   .05           |     302     459
igr  n/a|    0     0     0   -19   -58   -26   .00    5    5 |   -4696    1126     19     69
        |    0     0     0    17    17    26   .02           |    2118    2045
jpl  126|    0     0    11     9   -16    -1   .44   20   20 |    1687     837     21    116
        |    1     2     0    16    17    33   .04           |    1495    1855
mit  259|    0     0    -4    35  -103    -9  -.21   11   10 |  -16870    2485     21    136
        |    0     0     0    19    24     8   .01           |     422     947
ngs  225|    0     0    -3    29   203    -6  -.18   13    9 |   17263   -7156   2244   3779
        |    0     0     1    31    42    13   .02           |    1833    4472
sio  262|   -1     0     6   213   322     0  -.05   17   15 |     ---     ---    ---    ---
        |    1     1     0    26    23     7   .04           |     ---     ---


Table 1.1571.b   GPS week : 1571   MJD: 55241.000-55247.000   

         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  |   21   15   13   11   11   16   13 |
   2  |    6    5    6    5    5    5    6 |
   3  |    8    7    7    6    6    7    7 |
   4  |    4    4    4    4    4    4    4 |
   5  |    5    5    5    5    5    5    5 |
   6  |    7    8    9    6    6    6    6 |
   7  |    5    4    5    4    4    5    5 |
   8  |    3    3    3    3    3    3    4 |
   9  |    4    4    3    3    3    4    4 |
  10  |    4    4    4    4    4    4    4 |
  11  |    4    4    4    4    4    5    5 |
  12  |    5    5    5    5    5    5    5 |
  13  |    4    5    5    5    4    5    5 |
  14  |    4    4    4    4    4    4    4 |
  15  |    5    5    4    4    5    5    6 |
  16  |    5    6    6    5    6    5    6 |
  17  |    5    5    5    5    4    5    5 |
  18  |    5    5    5    4    5    5    6 |
  19  |    7    7    5    5    4    5    5 |
  20  |    5    6    8    9   10   10    6 |
  21  |    5    5    6    5    5    5    6 |
  22  |    5    4    4    4    4    5    5 |
  23  |    5    6    6    5    6    6    6 |
  24  |    4    4    4    4    4    3    4 |
  25  |    0    0    0    0    0    0    0 |
  26  |    6    6    7    7    6    6    6 |
  27  |    4    3    3    3    3    3    4 |
  28  |    5    5    5    4    4    4    5 |
  29  |    5    6    6    5    5    5    5 |
  30  |    3    4    3    3    4    3    4 |
  31  |    5    5    5    5    4    5    6 |
  32  |    4    5    5    4    4    4    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 2.1571.0   GPS week: 1571   Day: 0   MJD: 55241.000                            

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  243|    0     0     3     6   -76    -2  -.18    9    7 |    -398     -48     18     89
        |                    -18    31                       |
emr   88|    1     1     7     3  -190   -22   .46   19   18 |   -1937    -418     16     83
        |                     65   -35                       |
esa  130|    3     1    -1  -121    16    19   .27    8    8 |     273     456     12     97
        |                     42    23                       |
gfz  198|    0    -2    -7   -22   -29    21  -.20   12   12 |    -162     493     27    127
        |                     47   -32                       |
grg  107|    0     0     9    59  -126     7  1.00   23   22 |      78    -158     56    209
        |                   -103    58                       |
igr  n/a|    0     0     0   -13   -63     2   .02    6    5 |   -7277     359     16     56
        |                    -11   -19                       |
jpl  126|   -1     0    11     6   -16     2   .52   19   18 |     525    -280     17     92
        |                     33    -4                       |
mit  259|    0     0    -5    37  -102   -11  -.22   12   10 |  -16578    2074     18    142
        |                      5     9                       |
ngs  225|    0     0    -4    -5   199     1  -.20   14    9 |   19570  -13073   2097   3358
        |                    131    54                       |
sio  262|   -3     0     5   231   340     4  -.10   18   15 |     ---     ---    ---    ---
        |                   -159  -183                       |

Table 2.1571.1   GPS week: 1571   Day: 1   MJD: 55242.000                            

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  243|    0     1     4   -16   -48   -30  -.18    9    8 |     149   -1344     18     73
        |                     49   -27                       |
emr   88|    0    -1     8    23  -185    -8   .42   18   18 |   -2397    2778     16     87
        |                     13    -2                       |
esa  130|    1     0    -2  -159    14    30   .23    8    8 |     -55   -2921     15    124
        |                     14    23                       |
gfz  198|    0    -1    -7    10   -35    15  -.13   12   12 |      65    4042     28    132
        |                     39   -40                       |
grg  107|   -3     1     5   -88  -122    23   .95   26   24 |      23    -365     62    206
        |                     45    62                       |
igr  n/a|    1     1     0   -37   -56   -35   .03    5    5 |   -7013    3104     21     67
        |                     -6   -22                       |
jpl  126|   -1    -1    10   -21   -19   -19   .40   19   19 |     214    2426     19    139
        |                     -7  -135                       |
mit  259|    0     0    -5    76  -136    -5  -.22   12    9 |  -16702    1887     20    148
        |                      2    13                       |
ngs  225|   -1    -1    -2   -11   212   -14  -.16   12    9 |   15253   -3700   2373   3867
        |                    119     4                       |
sio  262|   -1    -1     6   260   309    12  -.08   17   16 |     ---     ---    ---    ---
        |                   -154  -177                       |

Table 2.1571.2   GPS week: 1571   Day: 2   MJD: 55243.000                            

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  243|    0     0     3    16   -87    -5  -.17   10    8 |    -509    -279     20     73
        |                    -14    41                       |
emr   88|   -3    -2     8    81  -203   -33   .42   19   19 |   -1677    4055     43    118
        |                    -15    22                       |
esa  130|    2     1    -3  -135   -26    16   .25    8    7 |     722    -547     24    132
        |                     31    58                       |
gfz  198|   -1     1    -5   -79    40    12  -.16   10   10 |    -595    2566     40    134
        |                     -7   -20                       |
grg  107|   -4     0     0    -8  -154   -10   .92   27   24 |    -616     828     70    213
        |                    -68   149                       |
igr  n/a|    0     0    -1     8   -82   -77   .03    6    5 |   -5599    4009     27     91
        |                    -33    23                       |
jpl  126|    0    -1    11    33   -53    47   .42   19   19 |     861    3527     33    134
        |                     29   -12                       |
mit  259|    0    -1    -5    26   -58   -18  -.22   11    9 |  -17472    2876     25    136
        |                     11     0                       |
ngs  225|    0     0    -3    74   132    -4  -.20   16   11 |   18139   -6737   2238   4032
        |                     41   115                       |
sio  262|   -1     0     5   195   367   -11  -.08   16   14 |     ---     ---    ---    ---
        |                   -134  -177                       |

Table 2.1571.3   GPS week: 1571   Day: 3   MJD: 55244.000                            

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  243|    0     0     4   -24   -63     4  -.19    8    7 |     570   -1663     16     71
        |                     33    -6                       |
emr   88|   -2     0     5    87  -181   -48   .39   18   18 |    1354    2135     14     69
        |                    -33     5                       |
esa  130|    1     0    -2  -113    -1    39   .24    7    6 |     346    -333     11     98
        |                     25    54                       |
gfz  198|    0    -1    -4   -33    -1    -2  -.21   11   11 |     496   -1484     28    122
        |                      3   -13                       |
grg  107|   -4     0     2   -78  -123    32  1.03   26   22 |     321    -165     66    215
        |                     20   102                       |
igr  n/a|    0     1    -1   -26   -64   -32  -.01    5    4 |   -2572    2298     17     65
        |                    -14     1                       |
jpl  126|    1    -2    12    11    -3   -31   .42   19   19 |    3454    2008     18    127
        |                     34     3                       |
mit  259|    0     0    -4    32   -90   -20  -.19   10   10 |  -16741    2798     19    128
        |                     27     3                       |
ngs  225|    1     0    -4    39   163     6  -.20   13    9 |   16933   -9640   2295   4014
        |                     21    72                       |
sio  262|   -1     1     5   226   318    -3  -.05   16   15 |     ---     ---    ---    ---
        |                   -135  -173                       |

Table 2.1571.4   GPS week: 1571   Day: 4   MJD: 55245.000                            

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  243|    0     1     5   -26   -63   -29  -.16    9    8 |   -1144     495     19     74
        |                      4    16                       |
emr   88|   -3    -1     4    67  -138   -25   .39   18   18 |    1857   -1404     40    105
        |                    -30   -51                       |
esa  130|    2    -1    -3   -76   -29     8   .21    7    7 |    -312     711     22    123
        |                      1    54                       |
gfz  198|    0    -1    -6   -51   -43    34  -.18   13   13 |    -633    1661     35    144
        |                    -16   -49                       |
grg  107|    0     0     4   -82   -97     0  1.08   22   21 |    -145     261     53    218
        |                    -10    71                       |
igr  n/a|    0     1     0   -41   -42    -5  -.02    5    5 |   -1875   -1144     22     81
        |                    -33    -9                       |
jpl  126|    0     0    10    22    -9    41   .47   20   20 |    3835   -1181     31    116
        |                      1    16                       |
mit  259|    0     0    -3    20  -109     1  -.21    9    8 |  -16523    1482     23    117
        |                      7    13                       |
ngs  225|    0     0    -2    18   222    -9  -.16   11    7 |   14537     -67   2164   3541
        |                     78    26                       |
sio  262|    0     0     6   194   302     1  -.05   16   16 |     ---     ---    ---    ---
        |                   -128  -156                       |

Table 2.1571.5   GPS week: 1571   Day: 5   MJD: 55246.000                            

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  243|    0     0     5    -7   -56    -5  -.17    8    8 |      92    -703     14     68
        |                     16    18                       |
emr   88|   -1    -1     6    63  -158   -35   .41   19   19 |     252   -1439     13     71
        |                     -9    -8                       |
esa  130|    0     0    -2   -78    -8    15   .19    7    6 |    -323    -386     14    102
        |                    -29    50                       |
gfz  198|    0    -2    -7   -64   -96    25  -.12   10   10 |     182     -33     30    120
        |                     -6   -73                       |
grg  107|   -2     0     8   -49  -100   -14   .99   26   22 |     200    -562     55    199
        |                    -49    56                       |
igr  n/a|    0     0     0   -16   -29   -23  -.02    5    5 |   -3482   -1168     17     66
        |                    -36     3                       |
jpl  126|    1     1    12     5    -7   -25   .45   21   21 |    2294   -1197     16     90
        |                     15    -5                       |
mit  259|    0     0    -4    17  -110   -10  -.22   11   10 |  -16589    1969     21    137
        |                     19    10                       |
ngs  225|    0     0    -2    51   245     7  -.18   11    8 |   17599   -5873   2600   4039
        |                     51     6                       |
sio  262|    0     1     7   195   310    -3  -.00   17   16 |     ---     ---    ---    ---
        |                   -120  -149                       |

Table 2.1571.6   GPS week: 1571   Day: 6   MJD: 55247.000                            

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  243|    0     0     4    -6   -61    15  -.17    9    8 |    -269    -184     15     79
        |                     33     9                       |
emr   88|    0    -1     5    84  -169     0   .43   19   19 |   -1550     452     14     81
        |                    -11    -8                       |
esa  130|    2    -2     0   -89    -5    -8   .23    8    8 |     301   -2346     13    101
        |                    -22    46                       |
gfz  198|   -2    -1    -6  -102   -84    13  -.18   12   12 |      84     352     24    142
        |                     16   -51                       |
grg  107|   -4     1     9   -11   -52    20   .95   24   24 |      43    -174     65    239
        |                    -47   -26                       |
igr  n/a|    0     0     0    -8   -71   -11  -.01    5    5 |   -5055     425     18     58
        |                     -6     2                       |
jpl  126|    0     3    11    10    -7   -23   .42   21   21 |     631     556     17    114
        |                     26    -9                       |
mit  259|    1     0    -5    38  -114    -1  -.21   12   11 |  -17485    4312     23    147
        |                     11     5                       |
ngs  225|   -1     0    -5    41   250   -30  -.18   13   11 |   18810  -11004   1946   3606
        |                     31   108                       |
sio  262|    0     4     5   189   306     3  -.01   18   16 |     ---     ---    ---    ---
        |                   -118  -146                       |

       
       
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 3.1571.0   GPS week: 1571   Day: 0   MJD: 55241.000                            

        Weighted Average                                            Orbit Dynamics (7 days)
 PRN  |  cod  emr  esa  gfz  grg  igr  jpl  mit  ngs  sio  IGS |   cod  emr  esa  gfz  grg  igr  jpl  mit  ngs  sio   IGS
------+--------------------------------------------------------+---------------------------------------------------------
  X1M |   31  ---  ---  ---  ---   16  ---   32   23  ---   21 |    39  ---  ---  ---  ---   35  ---   29   32  ---    27
   2M |    8   18   11   16   24    5   22    7   13   27    5 |    20   30   24   26   36   21   28   23   17   20    18
   3E |   18   27    7   16   30    5   25   19   32   25    7 |    56   68   68   64   80   65   74   73   60   61    62
   4  |    6   10    6   10   16    6   10   11   10   17    3 |    30   33   37   42   40   34   35   37   36   27    34
   5M |    7   16    9   10   21    4   20   12   15   19    5 |    18   31   23   24   38   22   30   25   22   23    20
   6E |   21   25    7   17   31   16   19   21   25   18    7 |   136  143  142  143  162  144  148  149  139  154   142
   7  |    7   23    8   10   25    4   20   12    8   11    4 |    13   31   20   18   40   18   28   18   18   20    16
   8  |    6   13    6    7   15    5   10    6   12    9    3 |    14   23   19   17   27   15   23   11   21   14    16
   9  |    5   14    9    7   17    3   12   11   13    9    3 |    16   21   16   15   24   14   18   14   22   12    14
  10M |    5   15    7    7   13    5   12    7   15   20    4 |    19   21   23   27   28   22   18   23   25   23    19
  11  |    7   18    8    9   28    4   18    8   11   16    4 |    28   33   35   36   42   32   32   34   39   27    31
  12M |    7   18    7   11   24    4   20   12   10   17    4 |    28   37   25   28   41   27   37   28   28   28    27
  13E |    6   16    8   12   26    5   19   11   10   11    4 |    19   26   20   19   40   16   26   18   19   19    16
  14E |    7   17    6   12   14    3   17    9    9    8    4 |    14   25   17   19   23   15   24   15   25   16    16
  15E |    7   23   11   15   21    6   19    9   19   15    5 |    20   31   19   23   29   16   27   20   23   21    18
  16  |    6   20   10   14   23    6   23   12   14   20    5 |    22   33   27   22   41   24   38   22   28   27    24
  17E |    8   22    8   13   23    4   21   12   10   15    5 |    19   35   25   24   41   24   34   22   29   26    22
  18M |    9   17    9   10   22    4   19    8    9   33    5 |    21   32   25   24   35   23   33   24   22   30    23
  19E |    9   21   11   19   32    6   21   26   13   16    6 |    21   28   19   27   36   19   27   28   23   25    20
  20  |    7   20    7   13   23    5   21   11    8   24    5 |    24   29   26   22   29   23   17   26   30    4    24
  21  |    8   20    8    8   23    4   22   13    9   25    5 |    21   32   25   22   36   20   30   19   23   21    20
  22  |    8   15    9   13   23    5   20    8    7   18    4 |    23   35   31   29   41   25   35   26   24   26    26
  23E |    6   23   11   11   28    5   28   12   10   15    5 |    17   33   19   18   37   19   37   19   23   26    19
  24M |    8   14    6    8   15    4   11   12   10   13    3 |    33   32   39   40   39   35   32   40   35   38    36
 X25M |    5  ---  ---  ---  ---  298  ---  ---  ---  ---    0 |    47  ---  ---  ---  ---  260  ---  ---  ---  ---    47
  26E |   15   19    9   16   18    7   17   15   18   17    5 |    65   67   70   69   75   66   73   69   75   65    70
  27  |    5   13    8    6   18    3   10   10   12    9    3 |    17   20   19   19   27   17   20   15   28   18    18
  28  |    7   22   12   11   41    5   21   11   14   17    5 |    20   38   22   19   46   22   35   21   24   20    20
 X29E |   11   23    8   10   18    4   22    9   12  ---    5 |    25   36   27   24   36   24   31   23   27  ---    24
  30M |    6   13    6    9   17    5   12    8    8   12    3 |    16   26   18   21   28   17   23   17   18   18    16
  31  |    9   19    9   10   23    4   20    7   13   18    4 |    19   32   27   27   42   24   32   18   30   23    23
  32  |    7   17    9   11   18    4   17   10    9   16    4 |    10   15   15   17   23   13   17   17   23   15    13
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |    9   19    8   12   23    6   19   12   14   18      |T   27   35   30   30   42   35   35   29   31   29    28
 WRMS |    7   18    8   12   22    5   18   10    9   15      |NE  19   28   24   23   35   21   27   21   26   19    21
 MEDI |    7   18    8   11   23    5   19   11   12   17      |MD  20   32   24   24   37   22   30   23   25   23    20

Table 3.1571.1   GPS week: 1571   Day: 1   MJD: 55242.000                            

        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  |   22  ---  ---  ---  ---   24  ---   17   24  ---   15 |    28  ---  ---  ---  ---   42  ---   30   34  ---    26
   2  |    7   20    9   15   27    5   24   10    9   25    5 |    16   28   20   22   36   17   28   18   19   16    16
   3E |   14   19   10   15   38   10   19   27   30   13    7 |    57   65   62   60   74   60   66   58   63   61    60
   4  |    7    8    5   11   15    6    8   11    9   16    3 |    23   30   30   32   38   29   32   30   30   23    27
   5  |    9   18   10   11   33    6   24   13   11   19    5 |    12   27   22   19   35   18   28   15   16   15    15
   6E |   21   24   11   15   39    8   20   19   25   23    7 |   115  115  121  123  131  124  123  132  126  134   122
   7  |    5   17    8   10   23    5   19   14    8   11    4 |    19   35   27   24   43   25   33   23   22   23    22
   8  |    6   14    7    6   13    6   12    7    9   12    3 |    15   27   22   19   27   18   26   17   16   15    16
   9  |    6   12    7    7   18    4   11    7   13   12    3 |    15   19   16   17   24   16   22   19   16   14    13
  10  |    7   17    7   13   20    6   10    6    9   18    4 |    15   19   22   20   24   17   24   15   17   17    15
  11  |   10   17    5   10   37    6   18    7   11   12    4 |    26   35   27   32   42   29   31   30   30   27    27
  12  |    8   23    8   13   25    3   22   11    9   16    5 |    18   31   20   21   37   20   32   20   23   19    19
  13E |    6   17    5   13   21    4   21   10   13   13    4 |    13   23   12   17   29   11   25   17   19   15    12
  14E |    7   15    6    8   22    3   19    6    8   12    3 |    13   25   18   11   27   16   24   16   19   15    16
  15E |   11   24    9   13   21    4   20    8    9   12    4 |    18   33   26   23   36   20   31   22   24   25    22
  16  |    6   22   10   19   25    5   25   11   10   20    5 |    15   27   20   15   34   16   29   16   18   18    16
  17E |    6   17    7   11   24    4   25   10   12   18    4 |    19   29   25   20   38   21   29   20   22   20    19
  18  |   10   18    9   12   23    5   22    9    9   27    5 |    17   30   21   22   35   21   33   19   18   23    19
  19E |    8   32   11   17   37    7   22   27   14   18    7 |    20   31   17   29   33   17   25   33   21   29    19
 X20  |   10   18   12   18   26    6  ---   10   11  ---    5 |    24   31   31   33   33   28  ---   25   28  ---    26
  21  |    8   18   11   11   23    5   25    9    9   26    5 |    15   27   25   21   34   20   30   17   18   20    18
  22  |    7   14    7   13   24    5   20    9    9   17    4 |    17   30   25   23   38   21   32   20   20   17    20
  23E |    7   21    8   15   32    4   31   13   12   14    5 |    10   28   17   17   32   12   29   17   19   16    13
  24  |    9   11    8   10   17    3   12    7    8   14    3 |    23   27   34   30   32   29   28   28   25   28    27
 X25  |    5  ---  ---  ---  ---  677  ---  ---  ---  ---    0 |    82  ---  ---  ---  ---  634  ---  ---  ---  ---    83
  26E |   18   18    8   15   16    9   18   17   13   15    5 |    69   79   77   79   74   76   75   73   81   73    76
  27  |    6   11    6    9   20    4   11    6   12   12    3 |    16   23   18   19   27   19   26   18   17   17    15
  28  |    5   23   10    7   28    6   18    9   10   17    4 |    19   38   26   19   45   23   33   21   18   18    20
 X29E |   11   25    8   10   21    5   27    8    8  ---    5 |    19   33   26   22   37   22   29   19   22  ---    22
  30  |    6   14    8    9   16    4   13    8    8   14    3 |    16   22   21   20   29   18   20   19   19   19    18
  31  |    8   20    7   11   28    3   19    6   11   17    4 |    13   27   22   17   41   17   29   14   19   16    16
  32  |    7   16   11   13   22    7   17    8   10   16    4 |     9   19   18   18   23   13   15   14   20   11    13
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |    9   18    8   12   26    5   19   12   12   17      |T   25   33   28   28   39   45   34   26   27   26    27
 WRMS |    8   18    8   12   24    5   19    9    9   16      |NE  17   28   23   22   34   21   28   20   20   18    19
 MEDI |    7   18    8   11   23    5   19    9   10   16      |MD  17   28   22   21   35   20   29   19   20   18    19

Table 3.1571.2   GPS week: 1571   Day: 2   MJD: 55243.000                            

        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  |   16  ---  ---  ---  ---   28  ---   12   26  ---   12 |    18  ---  ---  ---  ---   35  ---   23   35  ---    17
  X2  |   10   23    8   13   26    6  ---   11   14  ---    5 |    15   28   21   24   33   17  ---   19   18  ---    18
   3E |   13   21    8   14   35    9   20   25   36   10    7 |    55   62   57   58   69   60   60   52   66   53    55
   4  |    8    9    5   10   17    6   10    7   15   18    3 |    22   26   32   29   31   27   26   26   30   20    25
   5  |    8   21    7   11   27    4   20   10   14   19    5 |    14   32   20   19   34   17   27   16   20   14    15
   6E |   29   20   20   14   40   11   21   18   32   27    8 |   121  135  126  129  149  125  136  132  124  139   127
   7  |   10   18    8   10   28    5   18   14   10   11    4 |    19   29   18   21   38   19   27   20   21   21    18
   8  |    6   14    7    7   16    4   13    8   10   11    3 |    14   27   19   15   28   17   24   18   18   15    16
   9  |    5   13    8    6   19    3   10    7   12    9    3 |    16   22   15   16   26   15   22   17   19   14    14
  10  |    4   14    5    9   17    5   10    5   13   17    3 |    12   20   19   19   23   18   17   15   22   15    14
  11  |   12   17    5   11   37    5   18    8   10   11    4 |    26   32   28   34   38   30   27   31   31   28    27
  12  |    8   21    7   10   28    6   19   11   12   14    4 |    22   33   20   21   38   21   30   24   25   23    22
  13E |    8   19    8   12   19    7   20   11   17   12    4 |    14   27   14   14   29   14   25   18   18   13    12
  14E |    7   16    6   10   21    6   20   11   10   14    4 |    13   24   18   16   25   15   25   16   22   18    15
  15E |    9   18    7    8   20    6   16    8   19   10    4 |    20   29   23   20   29   21   27   24   29   20    20
  16  |    6   29    8   11   31    5   24    9   11   20    5 |    19   39   20   20   41   20   34   19   24   20    19
  17E |    9   19    8    9   18    6   24   12   17   10    5 |    15   26   23   17   33   19   28   16   23   19    16
  18  |    9   18    8   10   26    5   20    7    7   22    4 |    22   32   22   21   34   23   31   22   21   24    20
  19E |   10   27    9    9   38    7   22   11   10   11    5 |    14   33   17   19   40   16   23   15   17   15    14
 X20  |   11   20    9  ---  ---   13  ---   14  ---  ---    7 |    28   39   31  ---  ---   34  ---   38  ---  ---    30
  21  |    7   20    8    9   24    5   24   14   12   25    5 |    19   31   21   20   32   19   29   19   19   21    18
  22  |    7   15    6    8   27    6   21   10   12   13    4 |    22   32   25   21   36   23   33   22   25   20    21
  23E |    8   24   10   12   46    7   31   11   20   14    6 |    19   34   17   19   43   21   35   21   30   20    19
  24  |    6   14    6    9   23    5   14    6    6   14    3 |    25   28   24   27   31   26   24   28   23   25    25
 X25  |    6  ---  ---  ---  ---  216  ---  ---  ---  ---    0 |    46  ---  ---  ---  ---   81  ---  ---  ---  ---    47
  26E |   18   20   10   14   23    6   19   22   25   21    7 |    24   36   33   33   44   29   38   32   33   41    29
  27  |    6   12    6    7   20    4    9    8   13   10    3 |    13   23   13   14   29   14   23   14   18   12    12
  28  |    8   21   10   11   32    3   18   10   14   13    4 |    17   32   27   18   45   21   30   17   17   15    18
 X29E |    8   25    7    9   18    5   27    8   15  ---    5 |    17   27   20   22   22   17   27   17   21  ---    17
  30  |    6   14    4    8   18    4   12    6   11   13    3 |    14   22   15   14   23   15   19   13   19   12    12
  31  |    7   20    9   12   29    4   20    7   10   16    4 |    16   30   22   21   41   20   30   17   21   14    18
  32  |    7   16    8   12   25    8   19    8   15   13    4 |    15   19   15   24   29   18   18   18   28   12    15
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |   10   19    8   10   27    6   19   11   16   16      |T   23   33   25   25   38   27   31   25   27   24    23
 WRMS |    8   19    7   10   24    5   19    9   11   14      |NE  18   29   22   21   34   21   26   21   22   17    19
 MEDI |    8   19    8   10   25    6   19   10   13   13      |MD  18   29   20   20   33   20   27   19   22   20    18

Table 3.1571.3   GPS week: 1571   Day: 3   MJD: 55244.000                            

        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  ---  ---  ---  ---   13  ---   15   20  ---   11 |    24  ---  ---  ---  ---   21  ---   28   25  ---    22
   2  |    6   19    8   13   26    5   24    8    9   26    5 |    18   29   22   24   35   20   31   22   19   22    19
   3E |   12   20    7   12   27    8   21   17   29   12    6 |    47   55   52   49   64   46   60   54   55   48    50
   4  |    6   10    6   10   15    5   10    8   12   18    3 |    24   33   31   33   36   30   30   32   33   25    28
   5  |    9   19    8   14   22    4   22   11   11   20    5 |    16   31   21   24   33   21   33   20   22   21    19
   6E |   16   18    8   17   28   10   19   13   24   12    6 |   106  114  110  106  130  107  118  118  111  118   111
   7  |    7   20    6    9   30    4   17   12   10   11    4 |    21   36   26   22   43   24   32   25   23   25    23
   8  |    6   15    6    8   15    3   10   10    6    9    3 |    13   22   16   15   27   13   21   19   16   16    14
   9  |    6   10    4    6   17    2   11    5   10   11    2 |    16   24   18   19   24   16   23   19   20   16    16
  10  |    5   13    6   10   16    4   12    8   10   17    3 |    15   22   19   24   25   20   21   21   24   21    18
  11  |   10   17    6    8   35    6   18   11    8   10    4 |    31   35   31   36   44   32   31   39   33   32    31
  12  |    9   21    6   12   24    3   19   10    7   16    4 |    26   37   24   28   37   26   35   27   26   26    26
  13E |    5   19    6   14   25    5   18   13   12   17    4 |    16   29   16   17   36   16   25   20   23   20    17
  14E |    7   18    5    9   23    3   20    7    7   11    3 |    18   27   19   22   22   17   25   20   24   19    19
  15E |    9   19    7   12   22    5   19    7    9   14    4 |    18   27   16   20   28   16   25   21   18   20    16
  16  |    7   20    8   10   29    4   25    9   12   20    5 |    20   33   22   21   42   22   34   23   20   21    21
  17E |    5   26    7    9   21    6   22   11   11   10    4 |    23   37   29   25   42   23   34   28   24   23    24
  18  |    7   18    7    8   21    3   20    6    7   21    4 |    26   33   25   30   34   28   37   29   28   30    27
  19E |    7   22    8   11   33    5   25   10   13    8    4 |    15   26   16   20   33   15   25   18   19   16    14
 X20  |   13   26   18  ---  ---    8  ---   15   21  ---    9 |    27   35   37  ---  ---   31  ---   38   41  ---    31
  21  |    6   19    8    8   25    4   23   14   10   27    5 |    21   31   23   25   34   22   33   25   23   24    22
  22  |    5   16    7    9   24    3   20   12    9   13    4 |    26   32   27   29   36   26   34   28   28   28    26
  23E |    7   20    8   14   51    5   28   13   16   14    5 |    23   34   24   26   50   24   37   28   30   27    24
  24  |    7   12    4    9   19    3   12    7   10   15    3 |    29   33   34   33   37   32   32   33   35   31    32
 X25  |    5  ---  ---  ---  ---   87  ---  ---  ---  ---    0 |    45  ---  ---  ---  ---  161  ---  ---  ---  ---    47
  26E |   17   25    8   16   26    7   17   14   19   24    6 |    32   49   37   36   51   36   42   36   36   43    35
  27  |    5    9    4    7   18    3   10    9   11   12    3 |    14   23   16   18   27   15   21   16   18   14    14
  28  |    6   17    9    9   25    3   16    7    9   13    3 |    20   35   29   24   44   24   32   25   22   22    23
 X29E |    8   21    6    7   25    3   27    9    7  ---    4 |    28   35   29   27   33   27   38   29   30  ---    28
  30  |    6   12    4   10   15    3   11    8    8   13    3 |    21   24   19   24   26   19   25   22   22   20    20
  31  |    8   21    7   11   30    4   21    8   12   16    4 |    18   31   18   23   41   19   32   19   23   18    19
  32  |    6   16    6   11   28    5   17    9   11   12    4 |    14   24   18   21   33   17   21   21   21   16    16
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |    8   18    7   11   26    5   19   10   13   16      |T   25   34   27   28   39   30   34   29   28   27    26
 WRMS |    7   18    6   11   22    4   19   10    9   15      |NE  20   30   24   23   35   22   28   25   24   21    21
 MEDI |    7   19    7   10   25    4   19   10   10   13      |MD  21   32   23   24   36   22   32   25   24   22    22

Table 3.1571.4   GPS week: 1571   Day: 4   MJD: 55245.000                            

        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  ---  ---  ---  ---   13  ---   15   20  ---   11 |    14  ---  ---  ---  ---   20  ---   21   32  ---    16
   2  |    7   20    6   16   22    3   24    6    8   24    5 |    14   25   20   22   33   16   28   16   23   16    16
   3E |   13   20    8   13   19   10   21   10   27   25    6 |    40   48   47   44   57   43   50   45   53   47    44
   4  |    8    9    5   12   13    4   10    8    8   17    3 |    20   26   28   31   33   24   26   27   26   20    24
   5  |    8   18    8   13   21    4   21    7    8   18    4 |    12   26   17   20   32   16   25   13   21   13    14
   6E |   15   19   10   17   31    9   21   13   22   17    6 |   101  108  110  104  127  103  116  115  104  117   108
   7  |    8   18    5   10   26    6   16   10    7   11    3 |    15   24   17   15   40   14   24   14   18   13    14
   8  |    7   11    4    8   13    5   12    8    9    9    3 |    12   17   14   13   25   12   20   15   17   11    12
   9  |    8   11    8    8   14    3   11    6    8   12    3 |    15   19   12   15   21   11   17   14   19   10    12
  10  |    7   15    6   14   19    4   11    7    6   16    3 |    12   20   17   24   25   16   18   20   23   20    16
  11  |   12   18    8    9   30    7   19    8    8   10    4 |    28   33   34   32   36   29   32   35   33   29    31
  12  |    6   22    6   13   21    4   21    8   10   17    4 |    18   30   17   19   34   17   29   20   26   19    19
  13E |    7   17    8   15   19    3   19    9   13   13    4 |    11   22   13   16   28   11   20   18   23   16    13
  14E |    7   16    5   11   17    3   20    5   12   10    3 |    19   29   21   16   27   19   25   17   27   18    20
  15E |   11   23    7   11   19    5   18    9    9   11    4 |    16   26   14   18   24   12   19   18   17   18    13
  16  |    7   26   16   14   24    4   27   11    7   22    6 |    18   34   28   17   37   17   33   18   23   18    19
  17E |    7   20    6    9   12    4   23   12    9   11    4 |    20   28   22   23   30   22   31   21   24   22    21
  18  |    7   16    7    9   21    4   20   11    8   21    4 |    15   26   17   18   31   16   27   16   19   26    17
  19E |    9   19    8   13   35    7   24    8    9    9    4 |    10   22   12   18   30    8   22   12   14    9     9
 X20  |   17   25   24  ---  ---   12  ---   16   15  ---   10 |    19   32   45  ---  ---   25  ---   29   36  ---    28
  21  |    7   19    9   11   24    4   23   11   11   26    5 |    16   26   21   19   34   15   27   16   20   16    15
  22  |    7   15    6    9   24    5   22    6    6   13    3 |    18   30   24   24   37   21   32   21   23   25    22
  23E |    8   24    9   26   42    5   31   10    9   14    5 |    21   32   21   28   38   19   33   19   26   23    20
  24  |    7   12    5   12   18    3   14    8   10   14    3 |    22   25   28   29   30   24   23   25   28   21    25
 X25  |    6  ---  ---  ---  ---   50  ---  ---  ---  ---    0 |    62  ---  ---  ---  ---  104  ---  ---  ---  ---    63
  26E |   15   20    8   15   20    5   16   14   20   19    5 |    22   40   29   27   41   26   38   32   29   35    28
  27  |    8   11    7    8   13    4   11    9    5   10    3 |    14   22   14   16   24   12   20   15   19   13    14
  28  |    7   20    7    8   20    5   17    7    8   13    3 |    14   31   21   16   39   15   28   16   19   15    16
 X29E |   10   19    6   11   19    5   27   10   12  ---    5 |    19   27   24   18   29   18   28   21   25  ---    20
  30  |    7   13    5   10   13    4   14    7    9   11    3 |    13   21   14   15   22   10   17   14   18    9    12
  31  |    5   22    7   13   24    4   22    8    6   14    4 |    14   27   18   20   39   16   27   16   17   15    15
  32  |    7   14    6   12   23    5   18    9   11   12    4 |    10   15   12   17   24   10   12   17   19   12    10
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |    9   18    7   13   22    5   20    9   11   16      |T   21   29   24   23   35   23   29   23   26   22    22
 WRMS |    8   18    7   13   20    5   20    8    7   16      |NE  16   25   22   19   32   17   24   19   22   16    17
 MEDI |    7   18    7   12   20    4   20    9    9   13      |MD  16   26   20   19   32   16   27   18   23   18    16

Table 3.1571.5   GPS week: 1571   Day: 5   MJD: 55246.000                            

        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  |   17  ---  ---  ---  ---   57  ---   12   33  ---   15 |    26  ---  ---  ---  ---   56  ---   21   40  ---    26
   2  |    9   23    8   11   25    4   27    7    8   25    5 |    13   27   19   17   34   14   28   15   20   15    15
   3E |   13   20    7   13   20    8   19   12   28   29    6 |    30   40   36   34   48   35   43   37   49   43    35
   4  |   10    9    5    9   12    5   11   13    6   17    3 |    15   18   23   20   29   20   20   23   21   18    19
   5  |    8   17    6   14   27    5   20   10    9   19    4 |    12   25   17   22   33   16   27   11   22   14    15
   6E |   14   20    8   16   28    8   21   15   18   28    6 |    96  102  105  103  120   99  110  108  101  117   103
   7  |    7   22    7    8   24    3   21   12   12   11    4 |    17   28   19   18   38   17   28   18   23   17    17
   8  |    8   11    4    6   12    4   11    7    9    8    3 |    11   18   13   12   24   12   19   14   19   12    12
   9  |    7   12    5    9   17    3   12    7   11   15    3 |    15   17   12   15   23   12   16   12   20   10    12
  10  |    6   15    5   12   18    3   11    8    6   18    3 |    12   18   19   22   22   15   18   19   23   19    16
  11  |    9   17   10    6   34    6   27   11    9   10    4 |    25   27   26   31   36   23   24   29   28   28    25
  12  |    7   23    5   11   23    4   20    9   11   17    4 |    18   32   20   18   33   18   28   21   24   19    20
  13E |    7   17    8   13   20    5   19   11   13   17    4 |    15   23   17   21   27   15   24   18   23   17    16
  14E |    7   18    5    8   18    3   20    7    8   11    3 |    15   26   19   15   27   17   24   15   24   18    18
  15E |    9   21    8   12   24    6   21   10    8   11    4 |    17   24   15   19   26   15   21   22   22   18    16
  16  |    5   23    8    9   24    5   29   12    8   22    5 |    16   31   21   18   33   19   32   18   24   19    19
  17E |    8   22    8    8   54    5   27   18   10    8    5 |    22   28   25   24   53   23   31   25   26   25    23
  18  |    8   19    6   11   23    3   23    9    7   24    4 |    19   29   22   24   33   19   31   20   26   29    21
  19E |    7   21   10    8   38    6   27    9   14   13    4 |    15   23   19   20   38   15   24   16   22   18    16
 X20  |   10   30  ---  ---   41   12  ---   15   14  ---    9 |    20   35  ---  ---   36   23  ---   29   31  ---    20
  21  |    7   20    7    7   27    5   25   12    8   25    5 |    16   26   18   17   34   16   28   18   23   19    17
  22  |    7   17    8   10   24    5   22   10    8   22    4 |    19   29   23   22   34   18   31   19   26   24    21
  23E |    8   26    8   19   46    5   32   11   12   13    5 |    23   33   25   29   40   23   34   25   29   26    24
  24  |    7   14    5    7   18    4   13    9    7   12    3 |    21   19   20   23   24   19   19   23   28   20    22
 X25  |    5  ---  ---  ---  ---   85  ---  ---  ---  ---    0 |    36  ---  ---  ---  ---   73  ---  ---  ---  ---    36
  26E |   16   18    8   13   16    7   14   18   17    9    5 |    36   50   42   38   48   38   47   40   36   44    39
  27  |    7   10    4    9   16    4   11    7   10   11    3 |    20   22   18   18   27   18   22   18   25   15    18
  28  |    6   21    6    7   24    4   19    9    8   14    4 |    14   31   18   16   40   16   28   15   19   17    16
 X29E |    8   23    6    8   20    2   25   10    8  ---    4 |    24   32   28   26   33   26   31   28   32  ---    27
  30  |    6   13    4    8   12    3   14    8    9   11    3 |    19   22   18   20   23   17   20   21   24   15    18
  31  |    6   25    8    7   26    5   25   10   11   17    4 |    18   30   19   14   42   16   29   17   20   13    17
  32  |    8   14    6    9   28    5   20   11   11   14    4 |    10   15   12   19   28   10   15   18   23   14    12
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |    8   19    7   10   26    5   21   11   11   17      |T   21   29   23   23   36   24   29   23   28   23    22
 WRMS |    8   19    6   10   22    5   21   10    8   16      |NE  16   25   18   18   32   16   24   19   23   17    17
 MEDI |    7   19    7    9   24    5   20   10    9   14      |MD  18   27   19   20   33   18   28   19   24   18    18

Table 3.1571.6   GPS week: 1571   Day: 6   MJD: 55247.000                            

        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  |   17  ---  ---  ---  ---   33  ---   15   22  ---   13 |    24  ---  ---  ---  ---   32  ---   17   39  ---    23
   2  |    9   23   11   12   25    5   25    8   14   24    5 |    17   31   23   20   35   19   31   18   30   19    18
   3E |   13   20   10   12   21    9   17   13   28   26    6 |    44   55   50   49   66   48   56   50   61   51    49
   4  |    8   10    7   10   15    6   13   15    9   17    4 |    26   29   35   33   35   30   29   35   35   26    30
   5  |    8   18    8   14   25    5   20   13   13   21    5 |    16   28   22   24   36   21   28   17   33   22    20
   6E |   11   20    9   11   22   10   20   18   20   19    5 |   112  123  126  119  143  118  128  131  117  133   122
   7  |    8   21    9   11   27    3   21   14   13   12    5 |    22   31   23   23   43   23   29   25   30   25    23
   8  |    8   13    7    9   15    5   11   10   13   10    3 |    12   18   16   16   25   13   21   15   20   13    13
   9  |    8   11    7    9   16    4   11    7   13   14    3 |    16   19   16   14   24   12   16   12   22   12    13
  10  |    5   12    8   11   20    3   11    9   10   19    4 |    17   20   26   28   29   22   22   24   36   30    23
  11  |    9   19    6   11   29    5   23   12    8   15    4 |    26   30   29   32   34   27   27   36   32   30    27
  12  |    8   22    7   11   22    4   22   11    8   16    4 |    22   35   23   23   35   23   35   24   33   23    24
  13E |    7   21    9   13   21    5   21   12   14   11    5 |    13   28   13   15   29   14   22   19   23   19    13
  14E |    7   18    7   10   22    3   19    9   11   10    4 |    22   31   22   16   24   19   28   24   27   20    20
  15E |   12   22   12   13   33    6   21   12   16   12    5 |    17   27   17   20   35   15   24   18   27   18    16
  16  |    8   24    9   15   25    5   31   11   14   21    6 |    19   35   24   20   37   20   37   20   27   21    21
  17E |    8   22    7   10   23    5   29   15   12    9    5 |    25   29   29   26   40   26   33   26   35   26    25
  18  |   10   20    8   15   23    6   22    9   10   30    5 |    23   31   22   27   31   21   29   22   27   31    20
  19E |    8   21   10   14   35    6   26   11   11   16    5 |    15   24   19   21   34   14   23   15   22   16    13
 X20  |    9   21    7   16   27    7  ---   13   12  ---    5 |    24   33   34   23   35   29  ---   29   39  ---    28
  21  |    8   22    8   11   25    5   30   11    9   25    5 |    22   30   25   26   35   21   32   26   27   26    22
  22  |    9   15    9   10   23    5   22    7    7   28    5 |    24   31   27   30   35   23   31   27   27   33    25
  23E |    8   27   12   19   42    6   34   12   12   12    6 |    25   40   24   28   49   26   39   26   31   29    24
  24  |    7   13    7   12   23    5   15   11    8   11    3 |    29   28   34   38   31   30   25   33   33   29    31
 X25  |    5  ---  ---  ---  ---   90  ---  ---  ---  ---    0 |    47  ---  ---  ---  ---   65  ---  ---  ---  ---    48
  26E |   14   17    8   11   20    7   14   21   15   14    5 |    40   52   45   44   60   43   52   50   50   49    46
  27  |    8   10    6   10   16    5   11    9   14   13    3 |    17   24   18   23   29   18   22   16   22   20    17
  28  |    8   21    9   12   30    3   21    9   11   17    4 |    16   34   20   15   45   17   31   18   23   23    17
 X29E |    8   18    6   11   16    3   27   11    9  ---    5 |    17   26   24   23   23   20   26   23   31  ---    22
  30  |    6   14    6    7   16    2   14   10    8    9    3 |    18   20   22   16   22   16   19   19   26   17    18
  31  |    8   26   11   11   29    5   25   12   10   18    5 |    19   32   28   24   41   18   29   21   28   17    20
  32  |    9   18    6   10   20    6   21   15    8   16    4 |    13   20   15   24   23   12   14   24   24   18    14
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |    9   19    8   12   24    5   21   12   13   18      |T   24   33   28   28   38   26   32   27   33   28    26
 WRMS |    8   19    8   12   24    5   21   11   11   16      |NE  19   28   23   23   33   20   26   23   27   22    20
 MEDI |    8   20    8   11   23    5   21   11   12   16      |MD  22   30   23   23   35   21   29   24   30   23    22



Table 4: Precise Navigation Summary.

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

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

Table 4.1571   GPS week: 1571   MJD: 55241.0-55247.0

CENT| CLK EPO  |        BRUS       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3037 |U    5     6    20 |U   11    12    38 |U    6     7    17 |
emr | emr 2864 |    12    16    42 |U   15    12    54 |     8     8    21 |
esa | esa 2866 |     6     6    22 |U   11    11    39 |     7     7    17 |
gfz | gfz 2778 |U   19    19    47 |U   17    17    72 |    10    10    22 |
grg | grg 2838 |     7     8    25 |U   13    14    46 |    12    10    29 |
igr | igr 2809 |    10    11    34 |    13    13    46 |     8     9    24 |
igs | igs 2807 |     8     9    28 |    12    11    44 |    11    10    20 |
jpl | jpl 2769 |U   12    15    40 |U   15    12    52 |U    8     8    23 |
mit | mit 2976 |U   13    16    41 |U   19    13    64 |U   11    10    43 |



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 5.1571.0   GPS week: 1571   Day: 0   MJD: 55241.0

CENT| CLK EPO  |        BRUS       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3039 |     6     4    21 |     8     9    46 |     8     9    26 |
emr | emr 2868 |    11    15    42 |    10    11    62 |    11    11    26 |
esa | esa 2880 |     7     5    22 |     8     8    46 |     8     7    20 |
gfz | gfz 2852 |    16    15    36 |    13    12    81 |    11     8    21 |
grg | grg 2880 |     9     7    28 |    10    12    59 |    15    14    38 |
igr | igr 2769 |     6     5    22 |    11    16    42 |     8     9    23 |
igs | igs 2824 |     6     5    20 |     8     9    58 |     9     9    21 |
jpl | jpl 2867 |    10    12    38 |     8    11    56 |     8    10    24 |
mit | mit 2976 |    13    15    40 |    13     9    58 |     8     9    19 |

Table 5.1571.1   GPS week: 1571   Day: 1   MJD: 55242.0

CENT| CLK EPO  |        BRUS       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3017 |     5     8    14 |    11    14    29 |     7     6    12 |
emr | emr 2868 |    13    16    46 |    16    12    50 |    11     7    18 |
esa | esa 2880 |     6     8    16 |    12    12    32 |    10     8    13 |
gfz | gfz 2815 |    17    15    51 |    17    18    65 |    12    11    15 |
grg | grg 2880 |     7     8    19 |    16    12    38 |    16    10    23 |
igr | igr 2794 |    14    14    39 |    15    12    56 |     9     5    14 |
igs | igs 2877 |     6     8    16 |    12    12    34 |     7     6    15 |
jpl | jpl 2770 |    13    15    42 |    19    13    60 |     9     7    22 |
mit | mit 2976 |    13    15    43 |    15    12    52 |     8     8    16 |

Table 5.1571.2   GPS week: 1571   Day: 2   MJD: 55243.0

CENT| CLK EPO  |        BRUS       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3037 |     6     6    19 |    11    12    31 |     5     5    17 |
emr | emr 2861 |    12    17    50 |    14    15    47 |     8     7    24 |
esa | esa 2880 |     7     8    21 |    12    12    34 |     7     6    14 |
gfz | gfz 2715 |    22    28    57 |    17    18    76 |    12    15    48 |
grg | grg 2784 |     6     8    26 |  ----  ----  ---- |    13     9    26 |
igr | igr 2736 |    14    18    49 |    14    15    45 |     7     8    21 |
igs | igs 2725 |     8     8    27 |    13    14    40 |     8    13    16 |
jpl | jpl 2674 |    12    19    48 |    13    13    53 |     7     6    21 |
mit | mit 2976 |    15    18    51 |    28    19   109 |     9     8    19 |

Table 5.1571.3   GPS week: 1571   Day: 3   MJD: 55244.0

CENT| CLK EPO  |        BRUS       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3031 |     5     8    23 |    13    13    36 |     6     8    15 |
emr | emr 2867 |     8    12    35 |    14    14    48 |     8    11    31 |
esa | esa 2880 |     6     6    26 |    12    10    36 |     7     5    13 |
gfz | gfz 2723 |    22    28    53 |    18    17    78 |     9     6    14 |
grg | grg 2784 |     6     8    28 |    15    18    46 |    11    10    36 |
igr | igr 2847 |     8     9    34 |    13    11    41 |     7     7    18 |
igs | igs 2739 |     5     7    25 |    14    12    41 |    32    16    39 |
jpl | jpl 2769 |    10    15    31 |    15    16    48 |     8     7    22 |
mit | mit 2976 |    13    19    52 |    17    13    62 |    11     9    27 |

Table 5.1571.4   GPS week: 1571   Day: 4   MJD: 55245.0

CENT| CLK EPO  |        BRUS       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3065 |     6     6    22 |    11     9    37 |     6     8    17 |
emr | emr 2866 |    10    15    35 |    20    14    69 |     6     7    13 |
esa | esa 2880 |     6     8    22 |    12     9    43 |     7    10    20 |
gfz | gfz 2734 |    10    15    26 |    16    18    65 |     8    11    20 |
grg | grg 2784 |     9    11    28 |    13    15    39 |    10     8    24 |
igr | igr 2844 |    12    10    35 |    17    13    47 |    12    19    50 |
igs | igs 2797 |     7     7    25 |    13    12    42 |     9     9    18 |
jpl | jpl 2770 |     9    13    30 |    20    13    53 |     8    10    19 |
mit | mit 2976 |     6    11    23 |    19    13    56 |    20    17   143 |

Table 5.1571.5   GPS week: 1571   Day: 5   MJD: 55246.0

CENT| CLK EPO  |        BRUS       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3041 |     6     6    21 |     9     8    39 |     6    11    14 |
emr | emr 2856 |    14    17    37 |    13     8    48 |     7     9    19 |
esa | esa 2784 |     6     6    23 |     9     9    35 |     7     7    23 |
gfz | gfz 2754 |    22    17    56 |    14    12    54 |    11     9    25 |
grg | grg 2880 |     8     9    22 |    11    10    42 |    10    10    33 |
igr | igr 2821 |     7     9    25 |     9     8    34 |     7     9    25 |
igs | igs 2815 |     5     6    24 |     9     8    34 |     6    10    12 |
jpl | jpl 2770 |    13    15    33 |    12     8    40 |     9     8    29 |
mit | mit 2976 |    10    13    30 |    18     8    48 |    13    10    46 |

Table 5.1571.6   GPS week: 1571   Day: 6   MJD: 55247.0

CENT| CLK EPO  |        BRUS       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3034 |     6     4    19 |    14    16    50 |     5     5    17 |
emr | emr 2868 |    18    19    51 |    15    13    54 |     7     7    19 |
esa | esa 2880 |     6     5    22 |    13    14    48 |     5     6    17 |
gfz | gfz 2857 |    21    19    51 |    21    26    84 |     9     9    14 |
grg | grg 2880 |     6     6    22 |    14    17    53 |     9     7    26 |
igr | igr 2857 |     8     9    33 |    16    15    59 |     5     5    18 |
igs | igs 2876 |    21    20    59 |    17    12    59 |     6     6    18 |
jpl | jpl 2767 |    17    18    55 |    18    14    52 |     9    10    25 |
mit | mit 2976 |    21    22    51 |    23    13    63 |     9    10    31 |


Table 6: Earth Orientation Parameters weekly summary.                          
                                                                              
        Weekly mean and standard deviation of Centre ERP, ERP rates and       
        LOD differences with respect to IGS combined values. See Table 7 for  
        the daily summaries.                                                  
                                                                              
        Xpole,Xrt: x pole and x pole rate                          
        Ypole,Yrt: y pole and y pole rate                       
        LOD      : Length Of Day                                               
                                                                              
        AC LOD BIAS    : 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 6.1571   GPS week: 1571   MJD: 55241.500-55247.500

                                                         AC LOD  AC LOD
CENT  FLAG  |   Xpole   Ypole     Xrt     Yrt    LOD |    BIAS  BIAS RMS
            |   [uas]   [uas]   [uas/d] [uas/d]  [us]|    [us]    [us]
------------+----------------------------------------+------------------
cod   xxxxx |       1     -11      50      70     -1 |       4     13
            |      21      32      56      62      6 |       1
emr   uuuuu |      24       6      78      -3      4 |      23     25
            |      24      23      63      78      7 |       2
esa   uuuuu |     -31      -5      51     -18      1 |      -4     12
            |      10      19      69      40      5 |       1
gfz   uuuuu |      52      -7     -44     -40     -4 |       8     12
            |      18      15      26      55      8 |       1
grg   --xxx |      --      --      93     106    -10 |       8     23
            |      --      --     142      97     25 |       2
igr   xxxxx |      16      23      15      -6      3 |       3      9
            |      10      14      27      79      3 |       3
irf   xxxxx |      13       3     -68      29     10 |      -6     14
            |      13      14      40      36     11 |       2
jpl   uuuuu |      34     -15      97     153    -15 |       3     20
            |      43      20      91      82     12 |       2
mit   uuuuu |       5      -8    -128     136     14 |       1     15
            |      18      19      65      77     13 |       3
ngs   uuuuu |     -42     -64    -140    -112     -4 |      -5      9
            |      35      33      78     102      3 |       1
sio   xuuuu |     179     139     216    -111     13 |      18     24
            |      19      29      66      66     15 |       3


Table 7.1571.0   GPS week: 1571   Day: 0   MJD: 55241.500

                                                         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 |     -25      48     -44      85      2 |       2     14
emr   uuuuu |      41     -35      73      10     12 |      21     23
esa   uuuuu |     -17     -12     146      51      4 |      -5     13
gfz   uuuuu |      38     -17     -38    -124     -2 |       8     13
grg   --xxx |      --      --    -118     -53    -30 |       9     21
igr   xxxxx |      25      41      24      14      3 |      -1      9
irf   xxxxx |       6      30     -91       3    -10 |      -4     17
jpl   uuuuu |      10      -3      -1      69      6 |       0     23
mit   uuuuu |      -3      25    -171      98     -9 |       3     20
ngs   uuuuu |     -48    -101    -130       1     -1 |      -7     10
sio   xuuuu |     189     189     139    -190    -14 |      22     31

Table 7.1571.1   GPS week: 1571   Day: 1   MJD: 55242.500

                                                         AC LOD  AC LOD
CENT  FLAG  |   Xpole   Ypole     Xrt     Yrt    LOD |    BIAS  BIAS RMS
            |   [uas]   [uas]   [uas/d] [uas/d]  [us]|    [us]    [us]
------------+----------------------------------------+------------------
cod   xxxxx |      18     -36      -4      47     -9 |       3     14
emr   uuuuu |      -7       0      91      34     -1 |      21     24
esa   uuuuu |     -32      -1      92     -38     -2 |      -5     13
gfz   uuuuu |      31     -26     -58      15     13 |       8     12
grg   --xxx |      --      --     267     154    -13 |       9     21
igr   xxxxx |      13      19      14     114      1 |       0     10
irf   xxxxx |      -9      13     -93      -8      2 |      -8     12
jpl   uuuuu |     126      20     128     170    -26 |       1     24
mit   uuuuu |     -22      11    -165      66      3 |      -1     11
ngs   uuuuu |     -13    -106    -155     -38     -5 |      -6     10
sio   xuuuu |     168     167     216    -184      0 |      17     21

Table 7.1571.2   GPS week: 1571   Day: 2   MJD: 55243.500

                                                         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      13      82      25      6 |       4     13
emr   uuuuu |       5      14     -15    -111     -2 |      22     24
esa   uuuuu |     -31     -32      77     -51      2 |      -4     12
gfz   uuuuu |      47       6     -60      21     -2 |      10     13
grg   --xxx |      --      --     -28     167    -43 |       8     22
igr   xxxxx |       4      32      56    -154      4 |       1      8
irf   xxxxx |      27      -1      -2      73     11 |      -9     12
jpl   uuuuu |      39     -30     -50     136    -28 |       3     21
mit   uuuuu |      27     -12     -38     213     14 |      -3     10
ngs   uuuuu |     -88     -42    -271    -215     -8 |      -5      9
sio   xuuuu |     204     133     311     -93     13 |      15     19

Table 7.1571.3   GPS week: 1571   Day: 3   MJD: 55244.500

                                                         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     -31      49     170     -6 |       5     13
emr   uuuuu |      22      35      10     -85      3 |      22     24
esa   uuuuu |     -27     -23       2       3     -2 |      -3     11
gfz   uuuuu |      40      -1     -64     -36    -13 |       9     13
grg   --xxx |      --      --     208     -13     -6 |       7     23
igr   xxxxx |      26      16      29     -12      4 |       3      7
irf   xxxxx |      27       2     -33      73     12 |      -8     12
jpl   uuuuu |      24     -32     136      29    -22 |       4     20
mit   uuuuu |      24     -25     -65     262     17 |      -2     11
ngs   uuuuu |     -45     -19    -135    -229     -5 |      -5      9
sio   xuuuu |     200     137     284     -63     19 |      14     18

Table 7.1571.4   GPS week: 1571   Day: 4   MJD: 55245.500

                                                         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      -7      80      26     -9 |       6     14
emr   uuuuu |      64      27      99     117     -3 |      24     27
esa   uuuuu |     -41      -4     -57     -48     -4 |      -3     11
gfz   uuuuu |      62      13     -31     -14    -10 |       9     13
grg   --xxx |      --      --      65     129     35 |       5     22
igr   xxxxx |      22      30      15      24     -3 |       5     10
irf   xxxxx |      13      -3     -60      -8     17 |      -6     14
jpl   uuuuu |      -3      -4     194     246     -8 |       6     19
mit   uuuuu |       0     -10     -93      56     23 |       1     15
ngs   uuuuu |     -13     -81     -50     -69     -3 |      -4      9
sio   xuuuu |     169     125     223    -164     24 |      17     23

Table 7.1571.5   GPS week: 1571   Day: 5   MJD: 55246.500

                                                         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     -25      75       3      0 |       5     13
emr   uuuuu |      12       0     170      40      5 |      24     26
esa   uuuuu |     -46      20      10      10     -4 |      -4     11
gfz   uuuuu |      77      -3       7     -40     -7 |       8     11
grg   --xxx |      --      --      40     191      6 |       9     26
igr   xxxxx |       1      27     -32     -23      5 |       5     11
irf   xxxxx |       4      -9     -75      22     17 |      -4     15
jpl   uuuuu |       9     -24     180     246     -8 |       4     18
mit   uuuuu |      -6     -28    -140     109     21 |       3     17
ngs   uuuuu |      -2     -60    -190    -215      0 |      -4      9
sio   xuuuu |     153     111     207     -42     23 |      19     26

Table 7.1571.6   GPS week: 1571   Day: 6   MJD: 55247.500

                                                         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     -41     116     130      5 |       4     11
emr   uuuuu |      29       3     119     -30     13 |      24     27
esa   uuuuu |     -25      14      86     -52     10 |      -4     11
gfz   uuuuu |      72     -24     -63    -101     -9 |       7     10
grg   --xxx |      --      --     216     165    -18 |      12     27
igr   xxxxx |      19      -2      -2      -7      8 |       6     11
irf   xxxxx |      21      -8    -121      50     20 |      -2     16
jpl   uuuuu |      30     -34      91     174    -20 |       3     18
mit   uuuuu |      16     -19    -222     148     26 |       5     20
ngs   uuuuu |     -87     -39     -49     -23     -4 |      -4      9
sio   xuuuu |     167     110     134     -44     26 |      22     29



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