Subject: [IGSREPORT-8902] Wk 1143 IGS Final Orbits / Resubmission
From: [email-masked]
To: [email-masked] (IGS Report Mailbox)
Cc: [email-masked] (Robert Weber)
Date: Sun, 30 Dec 2001 19:59:16 +0100 (MET)

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IGS Electronic Report   30 Dec 10:59:20 PST 2001      Message Number 8902
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Author:  AC Coordinator / AIUB/CODE

Dear Colleagues,

an updated version of the IGS Final Orbits Wk 1143 summary file
has been uploaded to cddis. This re-submission was necessary due to
erroneous paragraphs 7 and 8 of the remarks section of the 
original report (IGSReport 8885). Please note, that this re-submission
does neither affect any other igs final Wk1143 product file nor the content
of the tables of this summary file.

My apologies for the inconvenience.

  Robert Weber

                ****************************************
 
Author:  AC Coordinator / AIUB/CODE

Final IGS Orbit Combination - Week 1143   (Dec 02, 2001 - Dec 08, 2001)

Contacts: R. Weber ([email-masked]),
          U. Hugentobler ([email-masked]),
          H. Bock ([email-masked]), R. Dach ([email-masked])

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,

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:

 IGS11430-6.SP3  IGS GPS ephemeris files for days 0-6, week 1143 in SP3 format.
 IGS11437.ERP    Earth Rotation Parameters (ERP) and their rates as well as
                 Universal Time (UT1-UTC) and Length Of Day (LOD) associated 
                 with IGS ephemerides.
 IGS11437.SUM    Complete report.

REMARKS on IGS Final Orbit Combination:

1. The centres used in the clock combination are COD, EMR, ESA, GFZ 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.

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.

                  Day | Centre | PRN/STA list
                  ----+--------+---------------
                   0  |  ESA   |  ALGO
                   0  |  GFZ   |  NKLG
                   0  |  JPL   |  MCM4
                   1  |  ESA   |  1 ALGO BAHR MCM4 STJO
                   1  |  JPL   |  FORT MCM4
                   2  |  EMR   |  IRKT
                   2  |  ESA   |  23 ALGO YELL
                   2  |  GFZ   |  ALGO FAIR
                   2  |  JPL   |  FORT KOKB
                   3  |  ESA   |  ALGO
                   3  |  GFZ   |  KERG NKLG
                   3  |  JPL   |  FORT
                   4  |  COD   |  6
                   4  |  ESA   |  ALGO
                   4  |  GFZ   |  ALGO
                   5  |  COD   |  6
                   5  |  ESA   |  6 MDO1 NRC2
                   5  |  JPL   |  FORT MCM4
                   6  |  EMR   |  YELL
                   6  |  ESA   |  ALGO YELL
                   6  |  GFZ   |  NKLG
                   6  |  JPL   |  YELL

5. The following orbit solutions were excluded from the combination because 
   they were biasing the weighted average (generally indicated by long arc RMS).
   They were still used for statistics computation.

                  Day | Centre | PRN list
                  ----+--------+---------------
                   1  |  NGS   |  21

6. Velocity changes were estimated for the following satellites to
   alleviate the effects of modeling problems, experienced by all centres,
   in the Long Arc (LA) process:

                  ---------+------------
                  PRN list | 15 17 21 29
                  ---------+------------

7. Starting on 02-Dec-2001 (GPS Week 1143, day 0, MJD 52245) all IGS 
   products, including the IGS combined orbits, are based on the IGS
   realization of the ITRF2000 reference frame (IGS00). For more information
   see IGSMAIL #3605.

8. Small rotations were applied to the all AC orbit and ERP values in order
   to align them to the IGS00. 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 
   IGS01P37_RS54.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 |   (cm)   (cm)   (cm)   (mas)  (mas)  (mas)   (ppb) 
     -------+---------------------------------------------------
       COD  |  +1.49  +1.24  -0.00   +0.02  -0.02  -0.01   +1.70
       EMR  |  +0.03  +0.80  +1.76   +0.00  +0.02  -0.06   +0.80
       ESA  |  -0.78  +2.20  +0.24   +0.03  +0.09  -0.01   +1.30
       GFZ  |  -0.07  +0.02  -0.17   -0.04  +0.01  -0.06   +1.35
       JPL  |  -0.21  +1.72  -0.89   -0.00  +0.00  +0.01   +0.61
       SIO  |  +1.18  +0.76  +9.52   +0.13  -0.11  +0.00   +1.49

9. Starting on 22-Oct-2000 (GPS Week 1085, day 0; mjd=51839) all IGS clock
   products are based on the new clock combination scheme which uses the
   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, day 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 29-Nov-1998 (GPS Week 986, day 0; MJD 51146) all IGS clock
   products reflect the use of the following antenna phase center offsets
   (satellite fixed reference frame):

     Block II/IIA: 0.279 0.000 1.023  X, Y, Z in meters
     Block IIR   : 0.000 0.000 0.000  X, Y, Z in meters

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 1.1143.a). It also displays the computed satellite position sigmas for
the combined orbits (table 1.1143.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 2.1143.0-6). 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 3.1143.0-6). 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 4.1143). The fifth and final
part, Table 5, is similar to Table 4 and contains daily precise navigation
statistics (tables 5.1143.0-6).

  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 1143 summary.                       (Dec 02, 2001 - Dec 08, 2001)

Table 1.1143.a   GPS week: 1143   MJD: 52245.0-52251.0

         Mean and standard deviations of transformation parameters.
         WRMS - orbit RMS weighted by the SP3 header accuracy codes.
         STA  - Mean number of stations in the daily solutions.
         Units: meters, mas, ppb, nano-sec, nano-sec/day.

CENT STA|  DX   DY   DZ    RX    RY    RZ  SCL  RMS WRMS |   TOFT  TDRFT    RMS
--------|------------------------------------------------|---------------------
cod  129|0.00 0.00 0.00  0.02  0.01 -0.07 -0.2 0.03 0.02 |    0.6   -1.0   0.08
        |0.00 0.00 0.00  0.03  0.02  0.03  0.1           |    1.1    2.0
emr  35 |0.00 0.00 0.01  0.00 -0.02 -0.14  0.5 0.05 0.05 | 1351.0   15.9   0.10
        |0.00 0.00 0.02  0.05  0.03  0.11  0.1           |   36.1    2.0
esa  60 |0.00 0.00 0.01 -0.12 -0.17  0.03  0.2 0.08 0.06 |  943.6   11.7   0.11
        |0.00 0.00 0.01  0.13  0.20  0.14  0.1           |  693.9    7.3
gfz  75 |0.00 0.00-0.01  0.05  0.01  0.06 -0.2 0.02 0.02 |   -0.2    0.1   0.05
        |0.00 0.00 0.00  0.02  0.04  0.07  0.0           |    0.4    0.7
igr  n/a|0.00 0.00 0.00 -0.03 -0.05 -0.07  0.0 0.02 0.02 |    0.2   -0.2   0.07
        |0.00 0.00 0.00  0.05  0.05  0.07  0.1           |    0.4    0.4
jpl  42 |0.00 0.00 0.00  0.04 -0.01 -0.02  0.4 0.03 0.03 |    2.4   -2.3   0.06
        |0.00 0.00 0.01  0.04  0.04  0.04  0.0           |    1.3    2.8
ngs  75 |0.00-0.01 0.02  0.02 -0.10 -0.12  0.1 0.09 0.09 |   -0.1   -0.1   4.71
        |0.01 0.01 0.01  0.11  0.11  0.13  0.1           |    0.3    0.4
sio  38 |0.00-0.01 0.01 -0.18  0.13  0.23 -0.5 0.06 0.05 |    0.0    0.0   0.00
        |0.00 0.00 0.00  0.05  0.03  0.15  0.1           |    0.0    0.0

Table 1.1143.b   GPS week : 1143   MJD: 52245.0-52251.0

         Satellite position sigmas for the combined orbits
         (coded in the IGS SP3 orbit files).
         "E" flags eclipsing satellites.
         Units: cm.

              Day of GPS week
 PRN  |   0   1   2   3   4   5   6 |  Remarks
------|-----------------------------|------------------------------------------
   1  |   1   2   2   2   2   2   2 |
   2  |   2   2   2   2   2   2   2 |
   3E |   2   2   2   2   2   3   2 |
   4  |   1   2   1   2   1   1   1 |
   5  |   1   1   1   1   2   1   1 |
   6E |   2   1   2   2   2   2   2 |
   7E |   1   1   1   2   1   2   2 |
   8  |   1   1   1   1   1   1   1 |
   9  |   1   2   2   1   2   2   1 |
  10  |   2   2   1   2   1   2   2 |
  11  |   2   2   2   2   2   2   2 |
  13  |   2   2   2   2   2   2   2 |
  14  |   2   2   2   2   2   2   2 |
  15  |   2   2   2   2   2   3   2 |
  17  |   1   2   9   2   1   2  11 |
  18  |   2   2   2   2   2   2   2 |
  20  |   2   2   3   2   2   2   2 |
  21  |   2   0   2   1   8   1   2 |
  22  |   2   2   2   2   1   1   2 |
  23  |   3   2   2   2   2   3   2 |
  24  |   1   1   2   1   2   1   1 |
  25  |   2   2   1   1   1   1   1 |
  26  |   2   1   1   1   1   1   2 |
  27  |   1   1   1   2   1   1   1 |
  28  |   2   2   2   2   2   2   2 |
  29  |   6   1   1   1   2   2   1 |
  30  |   2   2   1   2   1   1   1 |
  31E |   2   2   2   2   2   2   1 |

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.
         Units: meters, mas, ppb, nano-sec, nano-sec/day.

Table 2.1143.0   GPS week: 1143   Day: 0   MJD: 52245.0

CENT STA|  DX   DY   DZ    RX    RY    RZ  SCL  RMS WRMS |   TOFT  TDRFT    RMS
--------|------------------------------------------------|---------------------
cod  129|0.00 0.00 0.00  0.04  0.01 -0.03 -0.3 0.03 0.02 |   -0.4    1.5   0.09
        |               -0.04  0.12                      |
emr  38 |-.01 0.01 0.00  0.03  0.00 -0.07  0.6 0.05 0.05 | 1300.6   17.1   0.11
        |               -0.24 -0.06                      |
esa  60 |0.00 0.00 0.01  0.11 -0.48 -0.11  0.1 0.07 0.06 | 1288.9   17.1   0.11
        |                0.10  0.13                      |
gfz  74 |0.00 0.00-0.01  0.04  0.06  0.11 -0.1 0.02 0.02 |   -0.5    0.3   0.05
        |                0.03 -0.06                      |
igr  n/a|0.00 0.00 0.00 -0.02 -0.01  0.03  0.0 0.03 0.03 |    0.1   -0.3   0.07
        |                0.05 -0.04                      |
jpl  42 |0.00 0.01 0.00 -0.01 -0.02  0.03  0.4 0.04 0.03 |    3.1    2.5   0.06
        |               -0.05  0.07                      |
ngs  75 |-.01 0.00 0.02  0.04 -0.23 -0.26  0.1 0.09 0.09 |   -0.2   -0.1   4.21
        |               -0.12  0.27                      |
sio  34 |0.00-0.01 0.02 -0.21  0.13  0.04 -0.4 0.05 0.05 |    0.0    0.0   0.00
        |                0.00 -0.06                      |

Table 2.1143.1   GPS week: 1143   Day: 1   MJD: 52246.0

CENT STA|  DX   DY   DZ    RX    RY    RZ  SCL  RMS WRMS |   TOFT  TDRFT    RMS
--------|------------------------------------------------|---------------------
cod  129|0.00 0.00 0.00  0.00  0.01 -0.06 -0.2 0.03 0.02 |    2.1   -4.0   0.10
        |                0.01  0.11                      |
emr  33 |0.00 0.00 0.00  0.07 -0.07 -0.10  0.4 0.05 0.05 | 1317.2   15.7   0.08
        |               -0.12 -0.08                      |
esa  60 |0.00 0.01 0.00 -0.23 -0.21  0.08  0.3 0.08 0.06 |  -72.5    1.2   0.12
        |                0.19  0.20                      |
gfz  80 |0.00 0.00-0.01  0.04  0.02  0.14 -0.1 0.02 0.02 |   -0.3   -0.2   0.06
        |                0.02 -0.02                      |
igr  n/a|0.00 0.00 0.00 -0.04 -0.01 -0.04 -0.1 0.03 0.03 |    0.9   -1.1   0.09
        |                0.00  0.02                      |
jpl  42 |0.00 0.00-0.01  0.04  0.00 -0.03  0.4 0.03 0.03 |    3.0   -6.7   0.05
        |               -0.07  0.02                      |
ngs  75 |0.01-0.01 0.03  0.11 -0.17 -0.14 -0.1 0.11 0.11 |    0.1   -0.5   4.76
        |               -0.04  0.18                      |
sio  40 |0.00-0.01 0.02 -0.12  0.12 -0.01 -0.5 0.05 0.05 |    0.0    0.0   0.00
        |                0.07 -0.09                      |

Table 2.1143.2   GPS week: 1143   Day: 2   MJD: 52247.0

CENT STA|  DX   DY   DZ    RX    RY    RZ  SCL  RMS WRMS |   TOFT  TDRFT    RMS
--------|------------------------------------------------|---------------------
cod  129|0.00 0.00-0.01 -0.03  0.04 -0.10 -0.2 0.03 0.03 |   -0.3    0.2   0.08
        |               -0.02  0.03                      |
emr  35 |-.01 0.01 0.00 -0.06 -0.04  0.06  0.4 0.05 0.05 | 1334.5   15.6   0.10
        |               -0.21  0.07                      |
esa  60 |-.01 0.00 0.01 -0.26  0.15 -0.16  0.1 0.08 0.07 |  -69.8    1.7   0.10
        |                0.11  0.18                      |
gfz  76 |0.01 0.00-0.01  0.07 -0.04  0.07 -0.2 0.02 0.02 |   -0.4    0.0   0.05
        |                0.01 -0.03                      |
igr  n/a|0.00 0.00 0.00 -0.06 -0.08 -0.09  0.0 0.02 0.02 |    0.3   -0.1   0.08
        |               -0.07  0.00                      |
jpl  42 |0.00 0.00 0.01  0.12 -0.05 -0.05  0.4 0.03 0.03 |    2.1   -2.4   0.06
        |               -0.05 -0.02                      |
ngs  75 |0.00-0.01 0.02 -0.07 -0.11 -0.01  0.1 0.09 0.09 |   -0.1   -0.1   4.78
        |                0.05  0.15                      |
sio  38 |0.00-0.01 0.01 -0.15  0.13  0.22 -0.4 0.06 0.05 |    0.0    0.0   0.00
        |                0.11 -0.09                      |

Table 2.1143.3   GPS week: 1143   Day: 3   MJD: 52248.0

CENT STA|  DX   DY   DZ    RX    RY    RZ  SCL  RMS WRMS |   TOFT  TDRFT    RMS
--------|------------------------------------------------|---------------------
cod  129|0.00 0.00-0.01  0.02  0.01 -0.06 -0.2 0.03 0.03 |   -0.7    1.1   0.09
        |               -0.07  0.04                      |
emr  35 |0.00 0.00 0.04 -0.02 -0.04 -0.27  0.4 0.06 0.06 | 1350.5   18.4   0.14
        |               -0.17  0.00                      |
esa  60 |0.00 0.00 0.00 -0.16 -0.08  0.11  0.2 0.09 0.07 | 1339.6   18.1   0.15
        |                0.01  0.20                      |
gfz  72 |0.00 0.00-0.01  0.05  0.01 -0.01 -0.2 0.02 0.02 |   -0.8    1.6   0.05
        |                0.03 -0.04                      |
igr  n/a|0.00-0.01 0.00 -0.01 -0.01 -0.17  0.1 0.02 0.02 |    0.0   -0.1   0.07
        |               -0.03 -0.03                      |
jpl  42 |0.00 0.01-0.01  0.04 -0.06  0.02  0.4 0.03 0.03 |    1.2   -3.5   0.08
        |               -0.07  0.07                      |
ngs  75 |-.01 0.00 0.02 -0.10 -0.01 -0.07 -0.1 0.09 0.09 |   -0.5    0.6   5.33
        |                0.15  0.10                      |
sio  39 |-.01-0.01 0.01 -0.15  0.15  0.28 -0.6 0.06 0.05 |    0.0    0.0   0.00
        |                0.11 -0.11                      |

Table 2.1143.4   GPS week: 1143   Day: 4   MJD: 52249.0

CENT STA|  DX   DY   DZ    RX    RY    RZ  SCL  RMS WRMS |   TOFT  TDRFT    RMS
--------|------------------------------------------------|---------------------
cod  129|0.00 0.00 0.00  0.04  0.00 -0.06 -0.1 0.03 0.02 |    1.2   -1.4   0.08
        |               -0.06  0.05                      |
emr  34 |0.00 0.01 0.02 -0.07  0.00 -0.26  0.5 0.05 0.05 | 1368.0   16.6   0.09
        |               -0.11 -0.06                      |
esa  60 |-.01 0.00 0.02 -0.02 -0.34  0.14  0.1 0.07 0.06 | 1356.6   16.4   0.11
        |               -0.01  0.23                      |
gfz  75 |0.00 0.00-0.01  0.05  0.04 -0.01 -0.2 0.02 0.02 |    0.1   -0.2   0.04
        |                0.07 -0.05                      |
igr  n/a|0.00 0.00 0.00  0.03 -0.05 -0.12  0.1 0.02 0.02 |   -0.1    0.0   0.07
        |               -0.09  0.03                      |
jpl  42 |0.00 0.00-0.01  0.04 -0.01 -0.02  0.4 0.03 0.03 |    4.7   -1.5   0.06
        |               -0.06  0.01                      |
ngs  75 |0.00 0.00 0.02 -0.09 -0.02  0.05  0.0 0.08 0.08 |   -0.1    0.0   3.94
        |                0.15  0.19                      |
sio  39 |-.01 0.00 0.01 -0.18  0.10  0.29 -0.4 0.06 0.05 |    0.0    0.0   0.00
        |                0.12 -0.09                      |

Table 2.1143.5   GPS week: 1143   Day: 5   MJD: 52250.0

CENT STA|  DX   DY   DZ    RX    RY    RZ  SCL  RMS WRMS |   TOFT  TDRFT    RMS
--------|------------------------------------------------|---------------------
cod  129|0.00 0.00 0.00  0.06  0.01 -0.06 -0.3 0.03 0.03 |    1.3   -2.6   0.06
        |               -0.07  0.04                      |
emr  35 |0.00 0.00 0.01  0.05 -0.01 -0.19  0.5 0.05 0.05 | 1387.2   11.9   0.08
        |               -0.08  0.01                      |
esa  60 |0.00 0.00 0.01 -0.15 -0.04 -0.06  0.3 0.07 0.06 | 1375.6   11.7   0.10
        |               -0.02  0.18                      |
gfz  75 |0.00 0.00-0.01  0.01 -0.04  0.01 -0.2 0.03 0.03 |    0.4   -0.6   0.05
        |                0.13 -0.02                      |
igr  n/a|0.00 0.00-0.01 -0.02 -0.11 -0.02  0.1 0.02 0.02 |    0.0   -0.1   0.05
        |                0.07  0.12                      |
jpl  42 |0.01 0.00-0.01  0.01  0.04 -0.05  0.4 0.04 0.04 |    2.2   -3.1   0.06
        |               -0.06  0.00                      |
ngs  75 |0.00-0.01 0.03  0.20  0.05 -0.08  0.1 0.07 0.07 |    0.4   -0.5   4.81
        |               -0.06 -0.01                      |
sio  39 |0.00 0.00 0.01 -0.23  0.08  0.39 -0.6 0.05 0.05 |    0.0    0.0   0.00
        |                0.13 -0.09                      |

Table 2.1143.6   GPS week: 1143   Day: 6   MJD: 52251.0

CENT STA|  DX   DY   DZ    RX    RY    RZ  SCL  RMS WRMS |   TOFT  TDRFT    RMS
--------|------------------------------------------------|---------------------
cod  129|0.00 0.00 0.00  0.00 -0.01 -0.10 -0.3 0.03 0.02 |    1.2   -2.0   0.06
        |               -0.06  0.01                      |
emr  35 |0.00 0.00-0.02 -0.02 -0.02 -0.13  0.4 0.05 0.05 | 1398.8   16.1   0.11
        |               -0.16 -0.09                      |
esa  60 |0.00 0.00 0.01 -0.17 -0.19  0.20  0.1 0.08 0.07 | 1386.7   15.9   0.10
        |               -0.06  0.14                      |
gfz  74 |0.00 0.00 0.00  0.08  0.00  0.12 -0.2 0.03 0.03 |   -0.2    0.0   0.06
        |               -0.01  0.01                      |
igr  n/a|0.00 0.00 0.00 -0.11 -0.10 -0.07  0.0 0.02 0.02 |   -0.1    0.1   0.06
        |                0.00  0.01                      |
jpl  42 |-.01 0.00 0.00  0.05  0.02 -0.07  0.4 0.03 0.03 |    0.7   -1.6   0.06
        |               -0.07 -0.02                      |
ngs  75 |0.00-0.01 0.02  0.02 -0.20 -0.30  0.3 0.08 0.08 |   -0.2    0.2   5.01
        |                0.01  0.21                      |
sio  37 |0.00-0.01 0.01 -0.24  0.17  0.36 -0.6 0.06 0.06 |    0.0    0.0   0.00
        |                0.10 -0.15                      |

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.
         "X" stands for excluded from the combination 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","MD" stands for median of the centre's satellite RMS.

         Units: cm.

Table 3.1143.0   GPS week: 1143   Day: 0   MJD: 52245.0

        Weighted Average                Orbit Dynamics (7 days)
 PRN  | cod emr esa gfz igr jpl ngs sio  IGS |  cod emr esa gfz igr jpl ngs sio  IGS
------|--------------------------------------|--------------------------------------
   1  |   2   4   6   1   1   2   9   5    1 |    2   6   7   2   5   6  14   7    5
   2  |   3   3   6   2   3   4  10   7    2 |    9   8   8   7   8   8  14  12    9
   3E |   2   7   9   3   4   3   9   3    2 |    3  10  10   4   6   6  17   8    7
   4  |   3   3   4   1   1   2   8   3    1 |    2   5   7   2   5   5  13   6    5
   5  |   2   4   4   2   2   2   8   3    1 |    5   7   9   5   7   7  13  10    7
   6E |   2   4   8   2   2   3   9   4    2 |    8   8  11   9  10   9  22  12   10
   7E |   2   8   3   2   2   2   8   3    1 |    6   8   7   8   7   8  16   8    7
   8  |   2   3   4   2   4   2   8   5    1 |    3   7   7   3   5   5  14   7    5
   9  |   2   3   3   1   2   2  10   4    1 |    3   6   8   3   5   5  11   9    6
  10  |   3   4   9   3   2   7   9   3    2 |    2   3   8   3   4   7  15   6    4
  11  |   3   5  11   2   3   4   6   5    2 |    3   9  14   3   7   7  14   9    6
  13  |   2   7   7   3   3   5  11   7    2 |    2   9   8   3   5   6  14   8    5
  14  |   3   5   6   2   5   5  10   8    2 |    2   5   5   3   5   6  15   8    5
 X15  |   2   4 ---   1   2 ---  11   3    2 |    6   7 ---   7   7 ---   9   8    7
 X17  |   2   2 ---   1   2 ---   8   4    1 |    4   6 ---   7   7 ---   8   6    7
  18  |   3   6   5   3   3   5   8   6    2 |    3   5   7   3   4   5  11   8    5
  20  |   3   6   5   2   3   5  11  10    2 |    2  10   9   3   6   6  14   9    6
 X21  |   3   5 ---   1   5   2   9   4    2 |    8   7 ---   7  11  10  10   7    9
  22  |   3   9   8   2   2   2  14   3    2 |    3   6   9   4   6   7  13   8    6
  23  |   5   4  17   4   5   7   6   7    3 |    6  10  13   8   9  10  12  12    9
  24  |   2   5   5   1   2   2   6   4    1 |    7   7   6   6   5   5  13   8    5
  25  |   2   8   4   2   2   3   7   6    2 |    5   7   7   4   6   7  14   9    6
  26  |   2   4  10   1   3   2   7   5    2 |    2   5  10   3   6   5  12   9    6
  27  |   2   4   6   1   2   2   7   4    1 |    4   7   5   4   6   6  12   8    5
  28  |   3   4   4   3   4   4  12   9    2 |    4   8   8   6   7   7  16  10    6
 X29  |   9  13 ---   8   3 ---  13 ---    6 |   53  20 ---  51  52 ---  51 ---   52
  30  |   3   6   6   2   2   2  10   3    2 |    4   7  10   3   6   6  15   9    6
  31E |   3   5   7   3   3   2  10   4    2 |    5   8  11   6   8   7  20   9    7
------|--------------------------------------|--------------------------------------
 RMS  |   3   5   7   2   3   4   9   5      |T  11   8   8  10  11   6  16   8   11
 WRMS |   2   5   6   2   3   3   9   5      |NE 13   8   8  12  13   6  17   8   13
 MEDI |   3   5   6   2   3   2   9   4      |MD  4   7   8   4   6   6  14   8    6

Table 3.1143.1   GPS week: 1143   Day: 1   MJD: 52246.0

        Weighted Average                Orbit Dynamics (7 days)
 PRN  | cod emr esa gfz igr jpl ngs sio  IGS |  cod emr esa gfz igr jpl ngs sio  IGS
------|--------------------------------------|--------------------------------------
   1  |   2   3   9   2   2   3  10   4    2 |    1   4   5   2   4   4  10   3    2
   2  |   3   6   4   2   2   3   7   8    2 |    8   7   7   8   8   8  13   9    7
   3E |   3   6  13   3   4   2  13   3    2 |    3   7   7   4   4   3  12   5    4
  X4  |   2   4   4   2  12 ---   9 ---    2 |    3   4   3   3   7 ---  10 ---    3
   5  |   2   5   5   2   3   3   8   5    1 |    4   4   5   4   3   4  11   6    4
   6E |   2   3   5   2   2   2  12   4    1 |    6   7   5   6   7   6  18   5    6
   7E |   2   6   5   2   3   2   9   4    1 |    4   4   5   5   6   5  11   5    4
   8  |   1   4   4   2   2   3   7   5    1 |    2   5   4   3   4   3   9   4    2
   9  |   2   3   8   2   3   2  13   5    2 |    3   3   7   3   4   3  13   4    3
  10  |   2   6   9   2   3   2  14   3    2 |    2   6   7   2   4   3  10   3    2
  11  |   2   6   8   2   2   3   8   6    2 |    2   6   8   3   4   3   8   6    2
  13  |   2   7   9   3   2   5  15   6    2 |    1   6   8   3   4   5  13   7    3
  14  |   2   7   8   2   4   4  15   5    2 |    2   6   7   2   5   3  12   5    2
 X15  |   2   6 ---   2   3 ---  11   3    2 |    5   4 ---   5   4 ---   6   5    5
 X17  |   2   5 ---   2   1 ---  10   4    2 |    3   8 ---  10   9 ---  10   3    9
  18  |   3   6   7   2   3   5  13   5    2 |    3   4   7   2   5   4  13   5    3
  20  |   3   9   7   3   3   5  10   7    2 |    2   7   6   4   5   4  11   7    3
 X21  | --- --- --- ---  25   1  38 ---    0 |  --- --- --- ---  18   7  23 ---    7
  22  |   3   5  10   1   4   2  13   5    2 |    3   6   5   3   5   4  10   4    3
  23  |   5   6  15   3   5   4   7   5    2 |    8  10  10  10  11  10   9  10    9
  24  |   2   3   8   1   3   3  10   4    1 |    6   5   6   6   6   5  12   7    5
  25  |   2   4   6   2   3   2  13   5    2 |    3   4   3   3   5   3  13   5    3
  26  |   2   3   9   2   2   2   8   4    1 |    1   3   8   2   3   3   7   5    2
  27  |   2   3   4   2   3   2   7   5    1 |    3   4   4   3   3   3   8   4    3
  28  |   3   6   5   4   2   4  10  11    2 |    2   5   6   5   5   5  13  11    4
 X29  |   2   5 ---   2   4   2  13   3    1 |   33  15 ---  34  33   1  33   1   33
  30  |   2   4   5   2   3   2  15   4    2 |    3   5   4   3   5   3  14   6    3
 X31E | ---   6   9   2   3   2  17   3    2 |  ---   7   8   5   5   5  16   5    4
------|--------------------------------------|--------------------------------------
 RMS  |   3   5   8   2   3   3  11   5      |T   7   6   6   8   8   4  13   5    7
 WRMS |   2   5   6   2   3   3  11   5      |NE  8   6   6   9  10   4  13   6    8
 MEDI |   2   5   8   2   3   2  11   5      |MD  3   5   6   3   5   4  12   5    3

Table 3.1143.2   GPS week: 1143   Day: 2   MJD: 52247.0

        Weighted Average                Orbit Dynamics (7 days)
 PRN  | cod emr esa gfz igr jpl ngs sio  IGS |  cod emr esa gfz igr jpl ngs sio  IGS
------|--------------------------------------|--------------------------------------
   1  |   3   4   8   2   2   2   9   5    2 |    2   6   6   4   4   4  13   5    3
   2  |   3   7   3   1   3   3   8   9    2 |    7   9   7   6   6   7  11   9    6
   3E |   3   6  15   3   2   2  14   4    2 |    3   5  10   4   4   4  15   5    4
   4  |   3   4   7   2   1   3   7   4    1 |    2   3   5   3   5   3  13   5    2
   5  |   2   4   4   1   2   3   7   4    1 |    5   4   7   4   4   4  11   7    5
   6E |   2   3   7   3   1   3   9   6    2 |    5   5   9   6   6   6  13   7    5
   7E |   2   3   4   2   2   3   9   4    1 |    3   4   6   4   4   5  13   5    4
   8  |   2   3   4   1   2   2   8   7    1 |    2   4   5   2   3   3  11   5    2
   9  |   2   4   8   2   2   2  11   4    2 |    3   4   9   2   4   2  18   6    3
  10  |   2   3   8   2   2   2  10   3    1 |    2   4   6   2   3   3   9   4    2
  11  |   3   5  12   2   3   3   6   6    2 |    2   5  12   3   5   3  10   6    3
  13  |   3   5   9   3   4   5  11   6    2 |    2   7  10   2   6   5  12   7    3
  14  |   2   5   7   2   2   5  13   5    2 |    2   6   7   3   5   4  14   7    3
 X15  |   2   4 ---   2   2 ---   8   4    2 |    4   4 ---   5   5 ---   7   5    5
 X17  | ---  18 ---   5  10 ---  25 ---    9 |  ---   9 ---  14  10 ---  14 ---   14
  18  |   3   5   7   2   2   5  10   5    2 |    3   4   6   4   4   4  11   4    2
  20  |   4   8   6   4   3   5   9  13    3 |    2   5   5   3   4   3  12  11    3
  21  |   3   4  11   1   2   2   8   5    2 |    6   6   3   6   7   6   9   6    5
  22  |   3   7   5   2   3   4   7   3    2 |    3   4   6   4   3   6  11   6    3
  23  |   5   6  13   3   3   6  10   3    2 |   12  14   9  12  12  11  13  12   11
  24  |   2   3  11   2   1   3  10   4    2 |    2   5  10   2   3   2  11   4    2
  25  |   2   3   3   1   2   3   7   4    1 |    3   4   6   4   5   5  12   6    4
  26  |   2   4   4   2   2   2   4   6    1 |    2   3   6   2   2   3  10   6    2
  27  |   2   3   6   1   2   2   6   6    1 |    3   4   4   3   3   3  11   6    3
  28  |   2   6   6   3   2   4   8   9    2 |    3   5   6   5   5   4  13  11    4
 X29  |   2   3 ---   1   2   3   9   5    1 |   21  13 ---  21  22   1  18   2   21
  30  |   3   5   6   1   2   2   6   4    1 |    3   6   7   4   4   4   9   7    4
  31E |   2   4  10   2   3   2   9   5    2 |    4   4   8   4   5   3  13   7    3
------|--------------------------------------|--------------------------------------
 RMS  |   3   5   8   2   2   3   9   6      |T   5   6   7   6   6   4  12   6    6
 WRMS |   3   5   7   2   2   3   9   5      |NE  6   6   7   7   7   4  11   6    7
 MEDI |   2   4   7   2   2   3   9   5      |MD  3   5   6   4   5   4  12   6    3

Table 3.1143.3   GPS week: 1143   Day: 3   MJD: 52248.0

        Weighted Average                Orbit Dynamics (7 days)
 PRN  | cod emr esa gfz igr jpl ngs sio  IGS |  cod emr esa gfz igr jpl ngs sio  IGS
------|--------------------------------------|--------------------------------------
   1  |   2   4   5   2   2   2   9   8    2 |    1   4   4   2   3   3  11   6    2
   2  |   4   6   9   2   2   3   7   8    2 |   12  15   8  12  11  12  15  13   12
   3E |   3   5  12   2   3   2  11   4    2 |    3   6  11   6   6   4  14   6    5
   4  |   3   4  11   2   3   2   8   4    2 |    2   4   7   2   4   3  10   4    2
   5  |   2   7   4   2   2   2   6   5    1 |    5   6   8   4   6   5   8   8    5
   6E |   3   5  10   3   1   3  11   5    2 |    5   7   6   6   6   7  13   6    5
   7E |   3   5   7   2   3   3  10   5    2 |    5   6   6   5   5   6  12   6    5
   8  |   2   3   6   2   2   2   6   4    1 |    2   5   7   3   4   4   8   5    3
   9  |   2   4   5   1   1   2  12   5    1 |    2   4   5   2   4   3  12   5    2
  10  |   2   3  11   1   3   2  13   5    2 |    2   4  10   2   4   3  13   6    2
  11  |   3   6  10   2   3   4   5   6    2 |    2   7   9   3   4   4   8   4    2
  13  |   2   7   6   2   2   5  12   8    2 |    2   5   6   2   3   5  11   8    2
  14  |   3   5   6   2   2   5  14   7    2 |    3   4   7   3   4   5  15   6    3
 X15  |   2   4 ---   1   2 ---  10   3    2 |    6   6 ---   7   6 ---   9   7    6
 X17  |   1   4   9   2   2 ---   7   3    2 |    2   5   1   6   6 ---   8   3    5
  18  |   3   8   5   2   2   4   7   5    2 |    3   5   4   3   4   4   8   5    2
  20  |   3   7   8   3   4   5  12   8    2 |    1   6   7   3   5   4  12   7    2
  21  |   3   5   7   1   2   2   6   5    1 |    6   6   2   6   6   6   7   6    6
  22  |   2   7   5   1   3   1  10   5    2 |    3   7   7   4   5   4  10   6    4
  23  |   5   6  19   3   2   4   7   4    2 |    9  11   6  10   9  10  11   9    9
  24  |   2   5   4   1   2   2   7   5    1 |    5   6   5   5   4   6   9   4    4
  25  |   2   5   4   2   3   3   7   5    1 |    4   5   5   4   4   3  13   6    4
  26  |   3   4   7   1   2   2   4   4    1 |    2   4   8   2   4   4   9   5    2
  27  |   2   4  11   2   2   1   6   5    2 |    3   6   7   4   4   4   9   6    3
  28  |   3   5   7   3   2   4   9   8    2 |    4   6   7   5   5   6  10   8    4
  29  |   2   5   5   2   2   2  10   4    1 |   17  13   1  17  18   1  16   1   18
  30  |   3   7   8   2   2   2   6   5    2 |    4   6   9   4   5   4   8   6    4
  31E |   3   6  11   2   2   2  11   6    2 |    3   4   5   5   4   5  15   7    3
------|--------------------------------------|--------------------------------------
 RMS  |   3   6   9   2   2   3   9   6      |T   5   6   6   5   6   5  11   6    5
 WRMS |   3   6   7   2   2   3   9   5      |NE  5   6   6   6   6   4  10   6    5
 MEDI |   3   5   7   2   2   2   9   5      |MD  3   6   7   4   5   4  11   6    4

Table 3.1143.4   GPS week: 1143   Day: 4   MJD: 52249.0

        Weighted Average                Orbit Dynamics (7 days)
 PRN  | cod emr esa gfz igr jpl ngs sio  IGS |  cod emr esa gfz igr jpl ngs sio  IGS
------|--------------------------------------|--------------------------------------
   1  |   3   4   7   1   1   2   8   9    2 |    2   3   5   2   3   3   9   6    2
   2  |   3   5   5   2   2   3   9   9    2 |    7   9   7   8   7   8  10   8    8
   3E |   3   6  10   3   3   3  10   3    2 |    5   9  11   6   6   6   9   8    7
   4  |   3   4   5   2   2   2   8   4    1 |    2   3   7   3   4   3   9   4    2
   5  |   2   6   9   2   2   2   7   4    2 |    4   5  11   4   3   4   8   6    4
   6E |   2   4   7   2   3   4  12   4    2 |    6   8   6   7   6   6  13   7    6
   7E |   2   3   8   1   3   3   9   4    1 |    4   3   4   4   4   5  12   5    4
   8  |   2   4   7   2   2   2   5   5    1 |    3   6   9   3   3   4   8   4    3
   9  |   2   5   9   1   2   2  10   5    2 |    2   4   6   4   4   2  11   5    3
  10  |   2   4   8   2   2   2  10   3    1 |    2   4   5   2   3   3   9   4    2
  11  |   2   6   7   2   2   4   7   7    2 |    2   6   9   4   4   4   7   5    3
  13  |   3   7   6   2   2   5  10   7    2 |    3   5   5   2   4   4   7   7    2
  14  |   3   5   5   2   4   6  13   8    2 |    2   4   5   3   4   4  10   6    2
 X15  |   2   5 ---   2   2 ---   6   4    2 |   13  12 ---  13  12 ---  14  14   13
 X17  |   2   4   8   1   1 ---   6   3    1 |    2   4   1   5   3 ---   5   3    4
  18  |   3   8   7   2   2   6   7   5    2 |    1   5   7   2   4   4   7   5    2
  20  |   3   6   8   2   2   6   7   9    2 |    2   6   7   3   5   4   7   9    3
 X21  | --- --- ---   9   8  13  15 ---    8 |  --- --- ---  10  10  11  12 ---   10
  22  |   2   7   5   2   1   2   8   4    1 |    3   7   6   4   5   4  10   6    4
  23  |   5   6  11   3   2   4   7   3    2 |   11  13  13  13  12  12  12  12   12
  24  |   2   6  10   2   3   3   6   6    2 |    5   8   9   6   5   6   9   6    5
  25  |   1   7   6   1   2   2   7   3    1 |    3   5   7   3   3   4   9   6    3
  26  |   2   5   3   1   2   2   7   4    1 |    2   3   3   3   3   3   7   4    2
  27  |   2   5   6   1   1   1   6   5    1 |    3   8   8   4   4   4  11   7    4
  28  |   3   5  10   3   2   4   7   9    2 |    4   4   5   4   5   4   8  10    3
  29  |   2   5   5   2   4   2   9   5    2 |   14  12   2  14  14   1  13   1   14
  30  |   2   5   4   1   2   2   6   4    1 |    3   3   6   3   3   3   7   5    3
  31E |   3   4  11   2   4   2  10   4    2 |    4   5   7   6   4   5  13   6    5
------|--------------------------------------|--------------------------------------
 RMS  |   3   5   7   2   2   3   8   6      |T   5   6   7   6   6   5   9   6    5
 WRMS |   2   5   6   2   2   3   8   5      |NE  5   7   6   6   6   5   9   7    6
 MEDI |   2   5   7   2   2   3   8   4      |MD  3   5   7   4   4   4   9   6    4

Table 3.1143.5   GPS week: 1143   Day: 5   MJD: 52250.0

        Weighted Average                Orbit Dynamics (7 days)
 PRN  | cod emr esa gfz igr jpl ngs sio  IGS |  cod emr esa gfz igr jpl ngs sio  IGS
------|--------------------------------------|--------------------------------------
   1  |   2   4   6   2   2   3   5   7    2 |    2   4   3   2   2   2   8   5    2
   2  |   4   6   8   4   2   5   6   7    2 |    9   8   8   6   7   8  11  10    8
  X3E | ---   5  14   3   2   3   9   5    3 |  ---   8  14   7   9   8  12   9    8
   4  |   2   3   4   3   2   3   7   3    1 |    3   3   5   3   3   2   9   3    2
   5  |   2   5   6   2   2   3   3   5    1 |    4   4   6   5   4   4   8   7    5
   6E |   2   6   5   3   3   3   8   4    2 |    5   9   8   5   7   6  13   7    6
   7E |   3   5   9   3   2   2   8   5    2 |    4   5   8   6   5   6  13   6    5
   8  |   2   4   6   2   1   3   6   5    1 |    1   4   5   4   3   3   9   4    3
   9  |   2   5   6   2   1   2   9   4    2 |    1   4   7   3   2   1  10   4    2
  10  |   3   3   7   2   2   3  10   5    2 |    3   3   4   3   3   3   9   4    2
  11  |   3   6   8   2   3   4   6   4    2 |    1   6   9   4   4   4   6   4    2
  13  |   3   7   6   3   2   6   8   7    2 |    2   5   5   3   4   5   7   7    3
  14  |   3   7   5   3   1   7  12   7    2 |    2   6   5   4   4   4   9   9    4
 X15  |   3  12 ---   3   4 ---   6   6    3 |   12  12 ---  12  11 ---  15  12   11
 X17  |   3   5 ---   3   2 ---   8 ---    2 |    2   4 ---   7   4 ---   7 ---    5
  18  |   3   8   6   3   2   6   7   6    2 |    1   5   4   2   2   3   5   3    1
  20  |   3   7   6   3   2   6   6   6    2 |    2   5   5   3   4   3   6   7    3
  21  |   3   3   6   3   2   2   8   4    1 |    6   6   3   8   8   9  10   6    8
  22  |   2   5   4   2   2   2   6   6    1 |    3   4   5   4   4   4  10   5    3
  23  |   5   7  18   3   3   5   5   5    3 |   10  11  15  11  10  11  12  10   11
  24  |   2   2   4   2   1   2   3   5    1 |    5   7   6   5   5   5   7   5    4
  25  |   1   5   3   2   2   2   6   3    1 |    2   4   5   4   2   3  10   4    3
  26  |   3   4   5   2   2   3   5   5    1 |    2   4   7   5   3   2   7   7    3
  27  |   2   4   7   2   1   2   5   5    1 |    2   5   3   3   3   4   7   5    3
  28  |   3   4   9   4   2   5   8  10    2 |    4   4   5   4   4   4   6  10    3
  29  |   3   5   8   2   1   2   8   4    2 |   14  11   2  14  15   1  14   1   14
  30  |   2   5   4   2   1   2   4   4    1 |    4   4   5   3   4   3   8   5    4
  31E |   4   3  10   3   3   2   9   4    2 |    3   4   7   5   4   4  11   5    3
------|--------------------------------------|--------------------------------------
 RMS  |   3   5   7   3   2   4   7   5      |T   5   6   6   5   5   4   9   6    5
 WRMS |   3   5   6   3   2   4   7   5      |NE  5   6   6   6   6   4   9   6    5
 MEDI |   3   5   6   3   2   3   7   5      |MD  3   5   5   4   4   4   9   5    3

Table 3.1143.6   GPS week: 1143   Day: 6   MJD: 52251.0

        Weighted Average                Orbit Dynamics (7 days)
 PRN  | cod emr esa gfz igr jpl ngs sio  IGS |  cod emr esa gfz igr jpl ngs sio  IGS
------|--------------------------------------|--------------------------------------
   1  |   3   3   8   1   1   2   9   9    2 |    2   4   4   5   4   4  11   5    3
   2  |   3   4  14   3   2   3  14   8    2 |    9  10   7   8   9  10  16  11    9
   3E |   4   3  16   2   3   3   8   6    2 |    7   7  14   6   7   6  12   8    6
   4  |   2   3   4   2   2   3   7   4    1 |    3   4   6   5   4   4   7   4    3
   5  |   1   4   5   2   1   2   7   4    1 |    5   7   9   6   6   6  10   9    6
   6E |   3   7   8   5   3   2  13   5    2 |    9  11  11  10  10   9  17   9    9
   7E |   1   8   8   3   3   3  10   4    2 |    5   6   7   6   6   6  12   7    5
   8  |   2   3   5   2   1   2   8   6    1 |    3   6   6   5   4   4  11   7    3
   9  |   1   2   3   2   1   1  11   4    1 |    3   5   6   5   5   4  12   6    4
  10  |   3   3  10   3   2   2   6   4    2 |    3   4   7   5   4   4  10   5    3
  11  |   2   5   9   2   2   4   8   7    2 |    2   6  10   6   6   4   8   6    4
  13  |   3   8   7   2   2   5  10   7    2 |    4   6   6   4   5   6  12   7    3
  14  |   2   4   5   2   2   5   8   7    2 |    2   5   5   5   4   5  10   7    3
 X15  |   3   5 ---   1   2 ---   7   5    2 |    5   6 ---   7   6 ---   7   7    6
 X17  | ---  23 ---   9  11 ---  23 ---   11 |  ---   9 ---  17   8 ---  12 ---   12
  18  |   3   6   6   3   2   5   6   7    2 |    2   5   5   6   6   4   9   5    3
  20  |   4   6   7   3   2   5   5   8    2 |    3   6   7   6   4   5   6   6    4
  21  |   3   3  14   2   2   2   8   5    2 |    6   6   2   8   8  10   7   5    8
  22  |   2   6   5   2   3   1  11   7    2 |    3   5   6   5   5   5   9   7    4
  23  |   6   4  14   5   3   5   8   4    2 |    9  10  14  11  11   9  11   9    9
  24  |   3   3   7   2   2   3   6   4    1 |    6   7  10   7   6   6   9   7    6
  25  |   2   6   5   1   2   1   4   4    1 |    4   7   7   6   5   5  10   8    5
  26  |   2   4   7   3   1   3   6   5    2 |    3   5   5   6   4   4  12   6    3
  27  |   2   4   5   1   1   2   6   6    1 |    4   6   4   5   4   4  11   7    4
  28  |   3   4   6   3   1   3   9   9    2 |    5   6   5   7   5   5  11   8    4
  29  |   3   6   4   2   2   1   4   5    1 |   17  14   1  18  18   2  17   1   18
  30  |   1   4   3   2   1   2   4   4    1 |    4   5   6   5   5   5   7   7    4
  31E |   3   3   8   2   2   2   9   5    1 |    5   5   7   8   7   6  17   9    6
------|--------------------------------------|--------------------------------------
 RMS  |   3   5   8   3   2   3   8   6      |T   5   6   7   7   6   5  11   7    6
 WRMS |   2   5   7   3   2   3   8   6      |NE  5   6   6   8   7   5  10   6    6
 MEDI |   3   4   7   2   2   3   8   5      |MD  4   6   6   6   6   5  11   7    4

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.
	 U    - Station Used in centre's solution (at least one day).
         Units: centimetres.

Table 4.1143   GPS week: 1143   MJD: 52245.0-52251.0

CENT| CLK EPO  |      BRUS      |      TOW2      |      WILL      |
----|----------|----------------|----------------|----------------|
cod | cod 2593 |U   1    1    3 |U   1    2    5 |U   2    2    5 |
emr | emr 2638 |    2    2    6 |    2    3    6 |    2    3    4 |
esa | esa 2404 |    4    3    9 |    3    5    9 |    5    6    7 |
gfz | gfz 2654 |    2    3    6 |U   2    4    6 |    2    3    4 |
igr | igr 2658 |    2    2    5 |    2    3    5 |    2    3    4 |
igs | igs 2670 |    2    3    6 |    2    3    5 |    2    3    4 |
jpl | jpl 2451 |    3    3    7 |U   2    5    6 |    6    7    8 |

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: centimetres.

Table 5.1143.0   GPS week: 1143   Day: 0   MJD: 52245.0

CENT| CLK EPO  |      BRUS      |      TOW2      |      WILL      |
----|----------|----------------|----------------|----------------|
cod | cod 2684 |    1    1    2 |    1    2    6 |    1    1    3 |
emr | emr 2655 |    3    3    4 |    2    2    5 |    2    2    4 |
esa | esa 2266 |    5    5   17 |    3    5   17 |    5    5    7 |
gfz | gfz 2668 |    2    3    4 |    2    3    4 |    2    2    2 |
igr | igr 2673 |    2    3    3 |    2    2    4 |    2    1    2 |
igs | igs 2676 |    2    2    3 |    2    2    4 |    2    2    4 |
jpl | jpl 2381 |    3    3    5 |    2    6    7 |    4    5    9 |

Table 5.1143.1   GPS week: 1143   Day: 1   MJD: 52246.0

CENT| CLK EPO  |      BRUS      |      TOW2      |      WILL      |
----|----------|----------------|----------------|----------------|
cod | cod 2481 |    1    1    3 |    1    1    5 |    3    3    6 |
emr | emr 2574 |    3    4   10 |    3    3    6 |    3    3    7 |
esa | esa 2267 |    4    5    7 |    2    4    4 |    7   11   11 |
gfz | gfz 2574 |    3    4    9 |    1    2    4 |    3    3    7 |
igr | igr 2568 |    2    2    8 |    1    2    5 |    4    4    9 |
igs | igs 2655 |    3    5    9 |    1    2    5 |    2    4    6 |
jpl | jpl 2384 |    4    4    8 |    3    3    8 |    6    7   10 |

Table 5.1143.2   GPS week: 1143   Day: 2   MJD: 52247.0

CENT| CLK EPO  |      BRUS      |      TOW2      |      WILL      |
----|----------|----------------|----------------|----------------|
cod | cod 2567 |    1    2    4 |    1    2    5 |    3    3    6 |
emr | emr 2655 |    3    2    5 |    2    2    6 |    2    4    4 |
esa | esa 2361 |    3    2    5 |    3    6    6 |    5    4    5 |
gfz | gfz 2666 |    2    3    5 |    1    3    5 |    2    3    3 |
igr | igr 2677 |    2    3    5 |    1    2    4 |    2    2    3 |
igs | igs 2656 |    2    3    6 |    1    2    4 |    3    3    5 |
jpl | jpl 2480 |    3    3    5 |    2    5    6 |    5    6   10 |

Table 5.1143.3   GPS week: 1143   Day: 3   MJD: 52248.0

CENT| CLK EPO  |      BRUS      |      TOW2      |      WILL      |
----|----------|----------------|----------------|----------------|
cod | cod 2676 |    1    1    3 |    1    1    6 |    2    2    5 |
emr | emr 2669 |    3    2    6 |    3    4    7 |    1    4    3 |
esa | esa 2553 |    3    3    5 |    3    7    7 |    3    4    5 |
gfz | gfz 2666 |    3    2    6 |    3    6   11 |    2    3    4 |
igr | igr 2679 |    2    2    5 |    2    4    5 |    1    3    3 |
igs | igs 2685 |    2    3    5 |    2    5    8 |    1    3    5 |
jpl | jpl 2480 |    2    2    6 |    3    6    7 |    4    6    9 |

Table 5.1143.4   GPS week: 1143   Day: 4   MJD: 52249.0

CENT| CLK EPO  |      BRUS      |      TOW2      |      WILL      |
----|----------|----------------|----------------|----------------|
cod | cod 2579 |    1    2    3 |    2    1    3 |    2    1    4 |
emr | emr 2569 |    2    2    6 |    2    3    6 |    2    3    4 |
esa | esa 2456 |    5    3    7 |    2    3    5 |    3    4    5 |
gfz | gfz 2666 |    2    2    7 |    2    2    4 |    2    2    3 |
igr | igr 2674 |    3    1    7 |    2    2    5 |    2    2    3 |
igs | igs 2657 |    2    2    5 |    2    2    4 |    2    2    4 |
jpl | jpl 2473 |    3    5   10 |    3    3    6 |   10   13    8 |

Table 5.1143.5   GPS week: 1143   Day: 5   MJD: 52250.0

CENT| CLK EPO  |      BRUS      |      TOW2      |      WILL      |
----|----------|----------------|----------------|----------------|
cod | cod 2589 |    1    1    2 |    2    2    5 |    2    2    5 |
emr | emr 2672 |    2    1    5 |    2    4    5 |    1    4    4 |
esa | esa 2463 |    3    2    5 |    3    5    9 |    4    4    6 |
gfz | gfz 2669 |    2    2    5 |    2    3    5 |    2    3    4 |
igr | igr 2676 |    2    2    4 |    1    2    4 |    1    3    4 |
igs | igs 2680 |    2    2    5 |    2    3    5 |    1    3    4 |
jpl | jpl 2480 |    3    3    8 |    3    5    6 |    3    5    3 |

Table 5.1143.6   GPS week: 1143   Day: 6   MJD: 52251.0

CENT| CLK EPO  |      BRUS      |      TOW2      |      WILL      |
----|----------|----------------|----------------|----------------|
cod | cod 2572 |    1    1    2 |    1    1    4 |    1    1    3 |
emr | emr 2672 |    2    2    5 |    2    4    7 |    1    3    5 |
esa | esa 2459 |    3    3    8 |    2    6    6 |    3    4    4 |
gfz | gfz 2671 |    2    2    5 |    2    3    4 |    2    2    4 |
igr | igr 2660 |    1    1    4 |    1    3    5 |    1    2    4 |
igs | igs 2678 |    1    1    4 |    1    3    4 |    1    2    4 |
jpl | jpl 2480 |    2    2    6 |    2    5    5 |    3    5    7 |

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 (10**-5")                           
         Ypole,Yrt: y pole and y pole rate (10**-5"/day)                       
         LOD: Length Of Day (us)                                               
                                                                               
         AC LOD BIAS: 21-day mean LOD bias with respect to Bulletin A (us)     
         AC LOD BIAS RMS: RMS of AC LOD BIAS (us)                              
                                                                               
         FLAG: "u" (used), "x" (excluded), "-" (no submission)                 
               for Xpole, Ypole, Xrt, Yrt and LOD                              

Table 6.1143   GPS week: 1143   MJD: 52245.5-52251.5
                                                     AC LOD   AC LOD
CENT  FLAG  |  Xpole  Ypole    Xrt    Yrt    LOD |    BIAS  BIAS RMS  
------------------------------------------------------------------------
cod   uuuuu |     -7      4      4      5     18 |     -20     27
            |      3      3      7      8     15 |       1
emr   uuuuu |      7     14     15    -37     -2 |      25     32
            |      6      5     25     40      9 |       2
esa   uuuuu |     -7     -4      2      6      7 |      18     26
            |      4      9      9     15     10 |       2
gfz   uuuuu |      5    -10      0      2    -17 |      11     24
            |      3      3      7     15      8 |       1
igr   xxxxx |      0     -2     11     -2      1 |      -1     20
            |      6      6     11     23      9 |       1
irf   xxxxx |      1     -2      2      5      5 |      -7     17
            |      1      2      4      7      9 |       1
jpl   uuuux |      0      3    -18     10     -4 |       5     30
            |      3      2     14     20     49 |       6
ngs   xxxxx |    -14     -4     15    -16    -50 |      50     82
            |      9     11     61     42     61 |       9
sio   uuuuu |      0      2      5      4     -2 |     -10     19
            |      2      4     11     10     10 |       2

Table 7: Earth Orientation Parameters daily summary.                           
                                                                               
         Daily Centre ERP, ERP Rates and LOD differences with respect to       
         IGS combined values.                                                  
                                                                               
         Xpole,Xrt: x pole and x pole rate (10**-5")                           
         Ypole,Yrt: y pole and y pole rate (10**-5"/day)                       
         LOD: Length Of Day (us)                                               
                                                                               
         AC LOD BIAS: 21-day mean LOD bias with respect to Bulletin A (us)     
         AC LOD BIAS RMS: RMS of AC LOD BIAS (us)                              
                                                                               
         FLAG: "u" (used), "x" (excluded), "-" (no submission)                 
               for Xpole, Ypole, Xrt, Yrt and LOD                              

Table 7.1143.0   GPS week: 1143   Day: 0   MJD: 52245.5
                                                     AC LOD   AC LOD
CENT  FLAG  |  Xpole  Ypole    Xrt    Yrt    LOD |    BIAS  BIAS RMS  
------------------------------------------------------------------------
cod   uuuuu |    -12      2     -3     -2     -4 |     -21     28
emr   uuuuu |     11     21     56     21     15 |      27     33
esa   uuuuu |     -1    -11     -2    -22     -7 |      16     25
gfz   uuuuu |     10    -10     -7    -10    -11 |      10     23
igr   xxxxx |      6     -9     26    -39     -4 |      -1     20
irf   xxxxx |      2     -4      3      2      2 |      -8     17
jpl   uuuux |     -4      1    -24     24    -52 |      15     34
ngs   xxxxx |    -25      9    -13    -26     28 |      55     82
sio   uuuuu |     -3      9     10     -9      8 |     -10     19

Table 7.1143.1   GPS week: 1143   Day: 1   MJD: 52246.5
                                                     AC LOD   AC LOD
CENT  FLAG  |  Xpole  Ypole    Xrt    Yrt    LOD |    BIAS  BIAS RMS  
------------------------------------------------------------------------
cod   uuuuu |    -10      0     10      3      9 |     -21     27
emr   uuuuu |     13     12     16    -92     -9 |      27     33
esa   uuuuu |     -7    -18     -6     14     -4 |      17     25
gfz   uuuuu |      5     -6      9     15    -23 |      11     24
igr   xxxxx |      1     -1     19     28    -12 |       0     20
irf   xxxxx |      3     -1      2      8      4 |      -7     17
jpl   uuuux |      1      6    -33     16    -56 |      10     29
ngs   xxxxx |    -15      3     70     -8     27 |      56     84
sio   uuuuu |      1      5      3     -2     14 |      -9     18

Table 7.1143.2   GPS week: 1143   Day: 2   MJD: 52247.5
                                                     AC LOD   AC LOD
CENT  FLAG  |  Xpole  Ypole    Xrt    Yrt    LOD |    BIAS  BIAS RMS  
------------------------------------------------------------------------
cod   uuuuu |     -4      1     11     16      8 |     -20     27
emr   uuuuu |     -4     19     22    -11     -4 |      27     33
esa   uuuuu |     -7    -11     15     16     16 |      16     25
gfz   uuuuu |      5     -7     -2    -12    -12 |      10     24
igr   xxxxx |      1      4     11     -1     -4 |       0     20
irf   xxxxx |      1     -3      2      5      5 |      -7     17
jpl   uuuux |      3      2    -32     -3    -53 |       6     30
ngs   xxxxx |    -15     -8     94    -86    -46 |      59     86
sio   uuuuu |     -1     -1      4      6     -4 |      -8     18

Table 7.1143.3   GPS week: 1143   Day: 3   MJD: 52248.5
                                                     AC LOD   AC LOD
CENT  FLAG  |  Xpole  Ypole    Xrt    Yrt    LOD |    BIAS  BIAS RMS  
------------------------------------------------------------------------
cod   uuuuu |     -5      5     -4     -5     23 |     -20     27
emr   uuuuu |      4     14     21    -29    -12 |      27     33
esa   uuuuu |     -9     -2    -10      4     14 |      20     27
gfz   uuuuu |      7     -9      7      3     -5 |      11     24
igr   xxxxx |      5      0     19     22     12 |       0     20
irf   xxxxx |      2     -3      7     -4    -13 |      -6     16
jpl   uuuux |     -5      3    -22     11      6 |       3     31
ngs   xxxxx |     -8    -19    -29    -35    -81 |      56     84
sio   uuuuu |      1     -1     19      1    -10 |      -8     18

Table 7.1143.4   GPS week: 1143   Day: 4   MJD: 52249.5
                                                     AC LOD   AC LOD
CENT  FLAG  |  Xpole  Ypole    Xrt    Yrt    LOD |    BIAS  BIAS RMS  
------------------------------------------------------------------------
cod   uuuuu |     -7      7      1      2     15 |     -19     27
emr   uuuuu |      9     10    -14    -19     -2 |      25     31
esa   uuuuu |    -14      3      3      0      8 |      21     28
gfz   uuuuu |      6    -11      7    -19    -21 |      12     24
igr   xxxxx |     -3      8      1    -20      0 |       1     20
irf   xxxxx |      0     -1     -7      3     17 |      -6     17
jpl   uuuux |      0      4      1     36     24 |       1     29
ngs   xxxxx |    -18    -16     46    -11   -108 |      50     82
sio   uuuuu |     -2      1    -15     12      3 |      -9     18

Table 7.1143.5   GPS week: 1143   Day: 5   MJD: 52250.5
                                                     AC LOD   AC LOD
CENT  FLAG  |  Xpole  Ypole    Xrt    Yrt    LOD |    BIAS  BIAS RMS  
------------------------------------------------------------------------
cod   uuuuu |     -4      9      0      8     38 |     -21     28
emr   uuuuu |      2      9     23    -83      0 |      23     30
esa   uuuuu |     -7      5      6      9      6 |      19     28
gfz   uuuuu |      4    -16     -7     17    -17 |      10     25
igr   xxxxx |    -11     -7     -2     -6     -1 |      -2     20
irf   xxxxx |      1      0      5      5      7 |      -7     18
jpl   uuuux |      1      6    -14     10     47 |      -1     29
ngs   xxxxx |      2      6    -80     -1   -126 |      39     77
sio   uuuuu |     -1      0     14     -2    -11 |     -12     20

Table 7.1143.6   GPS week: 1143   Day: 6   MJD: 52251.5
                                                     AC LOD   AC LOD
CENT  FLAG  |  Xpole  Ypole    Xrt    Yrt    LOD |    BIAS  BIAS RMS  
------------------------------------------------------------------------
cod   uuuuu |     -5      3     12     13     36 |     -19     27
emr   uuuuu |     10     11    -17    -49     -1 |      22     30
esa   uuuuu |     -5      4     12     23     20 |      20     28
gfz   uuuuu |     -1     -8     -7     18    -28 |      10     25
igr   xxxxx |     -2     -6     -1      1     15 |      -2     19
irf   xxxxx |     -1     -5      3     18     11 |      -7     17
jpl   uuuux |      1      1      1    -27     53 |       0     29
ngs   xxxxx |    -22     -6     17     54    -46 |      35     80
sio   uuuuu |      3     -2     -3     19    -12 |     -13     20