Subject: [IGSREPORT-3040] Wk 0872 IGS Final Orbits
From: AC Coordinator / NRCan GSDivision
Date: Mon, 7 Oct 1996 16:01:40 PDT

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IGS Electronic Report    Mon Oct  7 16:01:40 PDT 1996      Message Number 3040
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Author: AC Coordinator / NRCan GSDivision
Subject: Wk 0872 IGS Final Orbits

Final IGS Orbit Combination - Week 0872   (Sep 22, 1996 - Sep 28, 1996)

Contacts: J. Kouba ([email-masked])
          Y. Mireault ([email-masked]), F. Lahaye ([email-masked])

COMBINATION STRATEGY:

For a complete description of combination strategy, please refer to the report
posted on CDDIS (IGS08727.SUM).

SOFTWARE:

  The weighted average software used was developed by T. Springer and
G. Beutler during 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, Kouba, Springer, 1993, Combining orbits of the IGS processing
   centres, in IGS Analysis Centre Workshop, October 12-14, Ottawa, pp 19-55.

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.
These values are supplemented with the current IERS Bulletin A UT1-UTC values. 

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

 IGS08720-6.SP3  IGS GPS ephemeris files for days 0-6, week 0872 in SP3 format.
 IGS08727.ERP    Earth rotation parameters (ERP) associated with ephemerides.
 IGS08727.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. Only the GFZ "exact" clock corrections (one epoch out of two) are included
   in the combination and RMS computation (no "interpolation" values).

3. Rapid ("IGR") orbits/clocks are included in the combination for statistics
   only.

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

5. Centre clock weights were determined using the following non-SA satellites:

                  Day | PRN list
                  ----+---------
                  0-6 |  15 28 

6. There was a maneuver on PRN05 on day 2 (Sep 24) (ref. NANU 164-96268).
   The ESA solution which modeled the maneuver is provided for that satellite
   on that day as the combined solution. An associated accuracy code of 0
   (unknown) was given since there was no redundancy. The ESA, SIO and the 
   combined solutions for PRN05 were excluded from the long arc evaluation on 
   day 2 due to unrealistic RMS caused by the maneuver.

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

                  Day | Centre | PRN list
                  ----+--------+---------------
                  0-3 |  JPL   |  10
                   2  |  SIO   |  5 (see Remark #6)

8. State vector resets were modeled for the following satellites to
   alleviate the effects of modelling problems, experienced by all centres,
   in the Long Arc (LA) process:

          Day (Date) |   TIME   |  PRN  | Centres  | Reason
         ------------+----------+-------+------------------------------
          3 (Sep 25) | 00:00:00 |   5   |   ALL    | Maneuver
          3 (Sep 25) | 00:00:00 |  19   |   ALL    | Modeling problems (a)
          6 (Sep 28) | 00:00:00 |  29   |   ALL    | Modeling problems (b)

  (a) Due to unrealistic long arc RMS, PRN19 was excluded from the long arc
      evaluation on days 1 and 2 for ACs that submitted solutions for this
      satellite;

  (b) Due to unrealistic long arc RMS, PRN29 was excluded from the long arc
      evaluation on day 5 for ACs that submitted solutions for this satellite;

9. Centre specific UT1-UTC values for NGS were not used in the long arc
   evaluation.  Smaller RMS were obtained when UT1-UTC values from Bulletin A
   were used.

10.PRN30, launched on Sep 12 1996 (wk870/day 4) at 8:48 (ref NANU 162-96256),
   achieved initial usable status on wk873/day 2 (Oct 1, 1996) at 15:28 
   (ref. NANU 171-96275). For that reason, PRN30 was not included in this
   week's combination.

11.Higher orbit/clock RMS for IGR on days 5-6 were caused by the lack of 
   redundancy in the orbit/clock combination for those days.

ORBIT COMBINATION AND EVALUATION STATISTICS:

For a complete description of tables and statistics, please refer to the report
posted on CDDIS (IGS08727.SUM).

Table 1: Week 0872 summary.                       (Sep 22, 1996 - Sep 28, 1996)

Table 1.0872.a   GPS week: 0872   MJD: 50348.0-50354.0

         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  79 | .00  .02  .00  -.20   .03   .05  -.1  .07  .05 |   -1.3   -3.4    1.2
        | .00  .00  .01   .23   .06   .22   .1           |    6.7   10.9
emr  31 | .00  .00 -.01   .23  -.13   .35  -.1  .08  .07 |  190.2   17.9     .6
        | .00  .00  .00   .11   .07   .26   .1           |   40.0    3.0
esa  59 | .00  .00 -.01   .17  -.01   .20   .2  .10  .08 |    5.6   11.2    1.1
        | .01  .01  .00   .17   .05   .17   .1           |   21.4    8.8
gfz  52 | .00 -.03  .01   .05   .16   .00  -.2  .07  .06 |  192.1   18.0     .5
        | .00  .00  .01   .09   .11   .10   .1           |   40.0    3.0
igr  n/a| .00  .00  .00  -.12  -.05  -.05  -.1  .11  .09 |    3.8   -2.0    3.3
        | .01  .01  .01   .22   .22   .13   .2           |    8.9    4.3
jpl  37 | .00  .01  .00  -.09  -.09   .04   .2 1.08  .07 |  191.8   17.9     .5
        | .00  .00  .01   .13   .16   .13   .1           |   39.9    3.1
ngs  50 | .01 -.04 -.01   .20  -.04  -.07  -.1  .12  .12 |  -11.9   15.2  288.9
        | .01  .01  .01   .26   .18   .13   .1           |   34.0   51.9
sio  119|-.01  .02  .01  -.15   .00  -.58   .0  686  686 |     .0     .0     .0
        | .01  .01  .00   .11   .11   .47   .2           |     .0     .0

Table 1.0872.b   GPS week : 0872   MJD: 50348.0-50354.0

         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
------|-----------------------------|------------------------------------------
   1E |   3   3   3   4   3   4   3 |
   2  |   2   3   2   2   3   3   2 |
   3E |   3   3   4   3   3   4   3 |
   4  |   3   3   3   2   3   3   3 |
   5  |   2   3   0   5   3   2   3 |
   6E |   3   4   3   4   3   4   4 |
   7E |   3   3   3   3   3   4   4 |
   9  |   2   3   3   3   3   3   3 |
  10  |   3   3   3   3   3   3   3 |
  14  |   2   3   3   2   3   5   2 |
  15  |   3   3   3   3   3   4   3 |
  16  |   4   3   3   2   2   3   2 |
  17  |   2   2   2   2   2   2   3 |
  18E |   3   5   4   3   3   4   3 |
  19  |   3  20   4   5   4   7   3 |
  21  |   2   2   2   3   2   3   2 |
  22  |   2   3   3   3   3   4   3 |
  23  |   2   2   2   3   2   3   3 |
  24  |   2   2   2   2   2   3   2 |
  25  |   2   2   2   3   4   3   3 |
  26E |   3   4   4   3   3   3   4 |
  27  |   3   5   3   3   3   4   3 |
  28E |   3   4   3   3   3   3   3 |
  29E |   3   3   3   3   8  17   3 |
  31E |   3   3   3   3   2   4   3 |

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 2.0872.0   GPS week: 0872   Day: 0   MJD: 50348.0

CENT STA|  DX   DY   DZ    RX    RY    RZ  SCL  RMS WRMS |   TOFT  TDRFT    RMS
--------|------------------------------------------------|---------------------
cod  79 | .00  .02  .00  -.48   .05   .17   .0  .05  .04 |   -9.6   13.3    1.2
emr  31 | .00  .00  .00   .34  -.05  -.09  -.1  .07  .07 |  134.6   18.2     .5
esa  59 | .00  .00 -.01   .14   .04   .31   .3  .09  .06 |   32.5    6.8     .9
gfz  52 | .00 -.03  .01  -.06   .09  -.11  -.2  .06  .06 |  136.3   18.5     .4
igr  n/a| .00 -.01  .01  -.04  -.07  -.07  -.2  .04  .04 |   -1.1    2.1     .5
jpl  37 | .00  .01  .00   .04  -.06   .04   .3 1.22  .04 |  136.2   18.4     .5
ngs  50 | .00 -.05 -.02   .61   .02   .03  -.1  .11  .11 |    2.3  -11.2   78.0
sio  121|-.02  .03  .01  -.15   .02  -.35   .1  .09  .09 |     .0     .0     .0

Table 2.0872.1   GPS week: 0872   Day: 1   MJD: 50349.0

CENT STA|  DX   DY   DZ    RX    RY    RZ  SCL  RMS WRMS |   TOFT  TDRFT    RMS
--------|------------------------------------------------|---------------------
cod  79 | .00  .02  .00  -.34   .03   .10   .0  .10  .06 |    7.1  -19.7    1.3
emr  31 |-.01  .00 -.01   .34  -.11   .52   .1  .10  .08 |  153.1   14.1     .7
esa  59 | .00 -.01 -.01   .11   .04   .16   .3  .11  .09 |   22.9   -3.6    1.4
gfz  52 | .00 -.02  .00   .12   .09  -.14  -.1  .06  .06 |  155.0   14.4     .6
igr  n/a|-.01  .00 -.01  -.10  -.09  -.26  -.1  .07  .05 |    1.8   -2.1     .7
jpl  36 | .00  .01  .00  -.04  -.06  -.11   .2 1.17  .07 |  154.9   14.0     .7
ngs  49 | .00 -.05  .00   .06   .04  -.28  -.1  .12  .12 |  -88.7  132.5  740.7
sio  123|-.01  .02  .00   .02   .04  -.10  -.3  .13  .13 |     .0     .0     .0

Table 2.0872.2   GPS week: 0872   Day: 2   MJD: 50350.0

CENT STA|  DX   DY   DZ    RX    RY    RZ  SCL  RMS WRMS |   TOFT  TDRFT    RMS
--------|------------------------------------------------|---------------------
cod  79 | .00  .02 -.01  -.44   .15   .42  -.1  .06  .06 |    7.7  -13.0    1.2
emr  32 |-.01 -.01 -.01   .24  -.23   .42  -.1  .07  .07 |  174.2   16.5     .5
esa  59 |-.01  .00 -.01   .23  -.01  -.05   .2  .08  .07 |   24.8   13.0     .6
gfz  51 | .01 -.03  .01   .22   .06  -.04  -.2  .07  .07 |  176.1   16.3     .5
igr  n/a| .01  .00  .00   .04  -.09  -.09   .0  .05  .04 |   -1.2    1.5     .6
jpl  37 | .00  .01  .01   .07  -.03   .07   .0 1.59  .05 |  175.9   16.5     .5
ngs  50 | .01 -.04  .00  -.06   .25   .01   .0  .11  .11 |    5.4   -9.3   77.8
sio  120|-.01  .02  .01  -.15  -.12  -.62  -.1 1814 1814 |     .0     .0     .0

Table 2.0872.3   GPS week: 0872   Day: 3   MJD: 50351.0

CENT STA|  DX   DY   DZ    RX    RY    RZ  SCL  RMS WRMS |   TOFT  TDRFT    RMS
--------|------------------------------------------------|---------------------
cod  80 | .00  .02 -.01  -.23   .04   .07  -.2  .05  .05 |    -.6    2.8    1.2
emr  32 | .00  .00 -.01   .16  -.14   .68  -.1  .08  .07 |  190.7   19.4     .6
esa  59 | .01 -.01 -.01   .45  -.01   .07   .2  .11  .08 |  -18.9   19.4     .9
gfz  51 | .00 -.03  .00   .09   .17   .15  -.2  .07  .07 |  192.7   19.4     .5
igr  n/a| .00 -.01  .00   .04   .01  -.13   .0  .04  .04 |     .7   -1.1     .5
jpl  37 | .00  .01  .01  -.12  -.08   .11   .2 1.67  .05 |  192.4   19.3     .5
ngs  50 | .01 -.05  .01   .43   .06   .08  -.2  .11  .11 |    1.4   -1.0   75.1
sio  119|-.01  .02  .01  -.30   .02  -.91   .0  .06  .06 |     .0     .0     .0

Table 2.0872.4   GPS week: 0872   Day: 4   MJD: 50352.0

CENT STA|  DX   DY   DZ    RX    RY    RZ  SCL  RMS WRMS |   TOFT  TDRFT    RMS
--------|------------------------------------------------|---------------------
cod  80 |-.01  .03  .00  -.06  -.02  -.05  -.2  .07  .05 |   -1.1   -6.8    1.1
emr  32 | .00 -.01  .00   .09  -.17   .50  -.1  .07  .07 |  204.5   18.1     .5
esa  59 | .00  .01  .00   .29  -.02   .11   .3  .10  .07 |  -16.7   19.1    1.6
gfz  53 | .01 -.02 -.01   .03   .27   .06  -.1  .06  .05 |  206.7   18.1     .4
igr  n/a| .00 -.01  .00  -.12   .01   .13   .0  .06  .05 |    -.1     .2     .5
jpl  37 | .00  .02  .02  -.09  -.21   .14   .3  .08  .08 |  206.1   18.4     .5
ngs  50 | .02 -.04 -.02  -.10  -.26  -.10  -.2  .12  .12 |   -4.1    3.1   78.6
sio  117|-.01  .02  .00  -.24   .09  -.95   .1  .09  .09 |     .0     .0     .0

Table 2.0872.5   GPS week: 0872   Day: 5   MJD: 50353.0

CENT STA|  DX   DY   DZ    RX    RY    RZ  SCL  RMS WRMS |   TOFT  TDRFT    RMS
--------|------------------------------------------------|---------------------
cod  77 | .00  .02 -.01   .06   .01  -.23  -.2  .08  .06 |   -6.0   -1.2    1.4
emr  31 | .00  .00 -.01   .31  -.19   .15   .1  .09  .09 |  225.5   23.3     .5
esa  58 | .00  .00  .00   .01   .01   .45   .0  .09  .07 |    5.3   18.8     .9
gfz  52 | .00 -.03  .00  -.02   .35   .02  -.3  .08  .07 |  227.3   23.5     .4
igr  n/a| .01  .01  .00  -.07  -.44  -.02  -.5  .21  .18 |    2.9   -4.2    1.6
jpl  37 | .00  .01  .01  -.29  -.34  -.16   .5  .10  .11 |  227.0   23.4     .5
ngs  50 | .02 -.02 -.02   .18  -.16  -.16  -.2  .15  .15 |   -1.5   -1.0   77.3
sio  117| .00  .01  .01  -.04   .13   .08   .3  .12  .12 |     .0     .0     .0

Table 2.0872.6   GPS week: 0872   Day: 6   MJD: 50354.0

CENT STA|  DX   DY   DZ    RX    RY    RZ  SCL  RMS WRMS |   TOFT  TDRFT    RMS
--------|------------------------------------------------|---------------------
cod  76 | .00  .02  .00   .06  -.03  -.16   .0  .05  .05 |   -6.4     .6    1.3
emr  31 | .00  .00  .00   .11  -.06   .23  -.1  .06  .06 |  248.7   15.4     .5
esa  58 | .00  .01 -.01  -.04  -.12   .33   .1  .09  .08 |  -10.5    5.1     .9
gfz  50 | .00 -.02  .01   .01   .11   .04  -.1  .06  .06 |  250.6   15.5     .4
igr  n/a| .01  .01 -.02  -.59   .30   .10   .1  .18  .10 |   23.6  -10.5    8.4
jpl  37 | .01  .01  .00  -.20   .17   .19   .3  .05  .05 |  250.3   15.5     .5
ngs  50 | .01 -.03 -.01   .31  -.23  -.08   .0  .12  .12 |    1.9   -6.4   76.3
sio  119|-.01  .02  .00  -.16  -.17 -1.20   .3  .12  .12 |     .0     .0     .0

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.
         "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 3.0872.0   GPS week: 0872   Day: 0   MJD: 50348.0

               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
------|--------------------------------------|--------------------------------------
   1E |   4  10   9   5   6   4  19   9    3 |   13  14  14  16  18  13  26   9   14
   2  |   4   7   6   6   2   4   9   8    2 |    5   9   7   9  10   6  13   8    8
   3E |   5   6   5   5   3   5  10  10    3 |    9  11  13  11  12  10  16   9    9
   4  |   5   6   4   6   3   5  14   8    3 |    5   8   8   8   8   5  10   8    5
   5  |   4   5   6   4   4   3   7   8    2 |    3   5   4   5   4   2   6   7    3
   6E |   7   8   7  10   5   4  11  11    3 |   11  14  12  17  15  12  18  18   12
   7E |   5  11   4   7   4   5  15   8    3 |    7  14   9   8  10   6  16  11    6
   9  |   5   4   6   8   4   3   7   7    2 |    6  10   8  10  10   7  12   8    9
  10  |   4   6   9   8   3 612   6   9    3 |    6   7   7   7  10 439   8  12    6
  14  |   4   5   5   6   5   3   6  10    2 |    5   6   8   8  12   6   9  12    6
  15  |   4   7   5   6   3   3  12  10    3 |    5   8   6   9   8   5  11  12    5
  16  |   4   7  24   9   4   5   6   8    4 |    6   8  13   7   9   6   8  10    6
  17  |   4   5   5   5   4   6   7   8    2 |    6   7   6   8   9   8   7   9    7
  18E |   8  10   6   8   2   4  12   9    3 |   24  19  22  19  17  20  22  21   19
  19  |   4   6  12   5   2   3  14  12    3 |    2   2   3   2   2   2   2   2    2
  21  |   4   5   4   6   4   3   9   8    2 |    5   7   8   9  12   6  11  12    6
  22  |   3   4   4   5   5   5  12  11    2 |    5   6   9   7  10   7  11  17    6
  23  |   6   4   4   5   3   4  12   8    2 |   13  13  13  12  14  14   9  18   12
  24  |   4   7   9   4   5   4   5   8    2 |    5   9   6   7   9   5  10   9    5
  25  |   4   6   4   6   4   4  13   7    2 |    7   8   8   7   7   6  16  12    5
  26E |   4   8  12   9   7   6  17   9    3 |    8  11  10  14  13   6  16  12    8
  27  |   3   7  13   5   4   4  13   9    3 |    8  11  12   9  13   8  17   8   10
  28E |   5   9   8   7   4   4  11   9    3 |    9  13  15   9  12   9  14  15    8
  29E |   6  11   6   7   3   3  11   9    3 |    7  12  11  11  12   8  13   9    9
  31E |   7   8   7   5   7   4  12   7    3 |    6  12  10  10  13   8  13   8    8
------|--------------------------------------|--------------------------------------
 RMS  |   5   7   9   6   4 122  11   9      |T   8  10  10  10  11  88  13  11    8
 WRMS |   4   7   6   6   4   4  11   9      |NE  6   8   8   8   9 109  10  10    6
 MEDI |   4   7   6   6   4   4  11   9      |MD  6   9   9   9  10   7  12  10    7

Table 3.0872.1   GPS week: 0872   Day: 1   MJD: 50349.0

               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
------|--------------------------------------|--------------------------------------
   1E |   7   7   9   8   4   5  11   7    3 |   10  10  17  13   8   9  12  10    9
   2  |   4   6  13   6   5   5   8   9    3 |    4   7   8   8   9   5  10  12    5
   3E |   6   9   9   7   4   5  12  12    3 |    4  13   9  12   9   7  13  10    7
   4  |   4   7  13   7   4   4   7  10    3 |    4   8  11   6   7   3  11   8    4
   5  |   7   7   7   5   4   5   8   4    3 |    2   7   6   6   5   2   9   4    4
   6E |   6  10  17  12   7   6  10   6    4 |    5  12  14   9   8   6  13   6    6
   7E |   6   9   6   6   6   6  11  15    3 |    4  11   7   9   9   4  14  12    5
   9  |   7   6   8   6   4   5   9   6    3 |    6  11   6   9   7   8  13   6    7
  10  |   4   7  11   5   4 581   8  11    3 |    3   6   5   7   6 432  11  10    5
  14  |   6   5   6   5   5   4   8  17    3 |    4   6   8   8   8   6   9  16    6
  15  |   6  16   9   4   4   5   9   6    3 |    4  17   8  10   6   5  10   7    7
  16  |   5   6   9   5   2   5   8  10    3 |    4   6  10   6   6   6   8   9    4
  17  |   6   6   5   3   6   5   9   7    2 |    4   8   4   8   7   5  11   9    5
  18  |  16   6  17   9  12   6  12  13    5 |    9  25  24  26  28  21  29  30   21
  19  |  38  30 --- ---  22  47  35  40   20 |    0   0 --- ---   0   0   0   0  ---
  21  |   5   4   4   5   4   4   6   7    2 |    3   6   5  10   9   5   9   8    5
  22  |   4  13   7   5   5   4  13  12    3 |    4  13   6   8   7   5  14  14    6
  23  |   5   3   6   5   6   5  13   7    2 |    8   8   8   7  10   9   7   9    7
  24  |   5   6   6   4   4   4   9   9    2 |    4   8   8   6   8   4  11   8    5
  25  |   5   7   6   3   3   4  10   7    2 |    5  12   9  12   8   9  19  12    9
  26E |   5   7  12   9   6   6  17  10    4 |    5  10   8  13  13   5  17  10    7
  27  |   4   8  27   5  11   6  12  21    5 |    9  12  18  13  14   8  18  14    9
  28E |   6  12   9   9   4   5  16  10    4 |    6  12   7  14   9   9  19  12    8
  29  |   8   9  11   3   5   4  10   6    3 |    7  14  18  11  12   8  12   8   10
  31E |   6  14  11   6   4   5   8  11    3 |    5  12  13   9  11   7  13   8    7
------|--------------------------------------|--------------------------------------
 RMS  |  10  10  11   6   7 117  12  13      |T   5  11  11  10  10  88  13  11    7
 WRMS |   6   8   9   6   5   7  12  13      |NE  5  11  10  10  10 102  13  11    8
 MEDI |   6   7   9   5   4   5  10  10      |MD  4  11   8   9   8   6  12  10    7

Table 3.0872.2   GPS week: 0872   Day: 2   MJD: 50350.0

               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
------|--------------------------------------|--------------------------------------
   1E |   5   9   6   8   4   6  12   6    3 |   11  12  11  16  13  12  16  12   11
   2  |   4   6   6   6   2   5   9   8    2 |    6   8   7   9   9   6  13   8    6
   3E |   7  10  12   7   3   5  14  10    4 |   11  20  20  19  16  12  22  11   14
   4  |   5   7   8   8   5   3  10   4    3 |    6   7  13   9  11   5  11   7    5
   5  | --- ---   2 --- --- --- --- >>>    0 |  --- ---   0 --- --- --- ---   0  ---
   6E |   7  10   5   7   5   6  13   4    3 |    8  13  14  12  12   8  14  10    8
   7  |   9   8   9  10   6   5   9   6    3 |    8  13  18  11  11   5  15   8    8
   9  |   7   7   7  10   7   5  11   6    3 |    6  13  10  11  12   7  15  10    7
  10  |   5   8  10   6   3 780   8   7    3 |    6   7   7   7   9 490   9   7    5
  14  |   6   6   7   5   4   4  13   8    3 |    4   6   7   6   9   3  12   7    4
  15  |   5   4   7   7   4   5  14   9    3 |    4   7   6   6   6   3  13   7    4
  16  |   5   7   8   7   2   3   8   6    3 |    7   6   6   8  10   5  12   8    6
  17  |   5   6   5   4   4   5  12   4    2 |    4   7   5   6   7   6  10   4    4
  18  |  12   6  10   8   6   6  13   7    4 |   18  29  23  29  27  26  34  31   26
  19  |   9   9  18   6   7   7   7   8    4 |    0   0   0   0   0   0   0   0  ---
  21  |   4   5   7   5   3   5  12   6    2 |    4   7   7  10  10   5  13   7    6
  22  |   6  10   6   6   5   4  11   8    3 |    4  11  10   8  11   5  11   7    5
  23  |   6   4   4   6   3   4  13   5    2 |   10   9  11  10  11  10  10   9    9
  24  |   5   5   9   5   5   3   9   4    2 |    5   7   9   8   9   5  10   5    4
  25  |   5   7   5   8   2   4  11   4    2 |    5   8  10  12  11   5  15   5    7
  26  |   5   7  12  13   7   7  12   6    4 |    8   9  16  14  11   8  16   8    8
  27  |   4   6  13   6   3   6  10   4    3 |    9  10  18  13  11  12  15   7   10
  28E |   4  10   5   5   2   4  10   8    3 |    8  13  13  13  12   7  14  10    8
  29  |   6   7   7   5   4   3  13   5    3 |    6  11  10   9   8   6  12   6    6
  31E |   6   9   7   6   4   5  12   6    3 |    8  13  16  12  16  12  21  12   11
------|--------------------------------------|--------------------------------------
 RMS  |   6   7   8   7   5 159  11 >>>      |T   7  11  12  12  12 102  15  10    9
 WRMS |   6   7   7   7   4   5  11 >>>      |NE  7  10  11  11  11 112  14   9    8
 MEDI |   5   7   7   6   4   5  12   6      |MD  6   9  10  10  11   6  13   8    7

Table 3.0872.3   GPS week: 0872   Day: 3   MJD: 50351.0

               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
------|--------------------------------------|--------------------------------------
   1E |   5   8  19   5   3   5  15   8    4 |    9  14  25  16  12   9  20  11   11
   2  |   3   6   4   7   2   5  10   8    2 |    5   8   8  10   8   6  14  11    6
   3  |   6   8  11   6   2   5  13   7    3 |    6  11  13  11   7   8  15   9    7
   4  |   3   4   6   9   4   5   9   4    2 |    4   7   7   9   8   5  12   9    5
   5  |   6  15   7   8   6 ---   9 ---    5 |    4  12   6   7   5 ---   8 ---    5
   6E |   6  14   9   9   5   5  12   7    4 |   11  17  13  12  13   9  20  15   10
   7  |   8   7  13   7   5   5  10   6    3 |    5  13  11  11   7   5  14   8    6
   9  |   5   7   8   8   3   5  11   9    3 |    7  12  10  14  11  12  14  14   10
  10  |   3   6   7   7   2 819  10   7    3 |    4   8   7   8   8 449  10  11    6
  14  |   6   4   5   4   3   3   7   7    2 |    5   6   7   7  10   7  10  13    5
  15  |   5   7   6   8   3   5   9   5    3 |    5   6  10   7   9   6   8  12    5
  16  |   3   7   8   5   2   4  10   5    2 |    5   8   7   9   8   7  12  10    6
  17  |   5   7   4   5   3   4   8   5    2 |    5   7   7  10   7   8  16   8    6
  18  |   6   8   9   7   3   3  13   5    3 |   20  22  25  22  23  21  26  23   21
  19  |   8   9  33   9   5   8   9   6    5 |   17  20  17  23  21  19  22  17   17
  21  |   4   5   9   6   4  10   7   8    3 |    4   7   8   9   9  12  11  10    6
  22  |   4   9   6   7   5   4  12   7    3 |    6  12   7   8  10   7  11  14    6
  23  |   5   3   6   5   3   6  14   7    3 |   11  11  13  12  12  14   7  16   11
  24  |   3   4   5   6   4   5  13   6    2 |    5   8   4   8   6   6  12  10    5
  25  |   5   8   7   7   4   5  17   4    3 |    6   9  11  11   6   6  19   9    6
  26  |   5   5   9  13   6   6  15   7    3 |    6  11  12  12  12   6  15   9    7
  27  |   4   6  11   6   4   4  11   4    3 |    5   8   7   9   7   5  13  11    5
  28E |   5   7  11   4   6   6  10   8    3 |    7  11  17  11  10   7  16   8    8
  29  |   4   9   9   6   3   4  13   5    3 |    4  12  11  10   7   6  13   5    4
  31  |   4  10   6   7   4   4  11   6    3 |    6  11   9  11   7   7  13   7    7
------|--------------------------------------|--------------------------------------
 RMS  |   5   8  11   7   4 167  11   6      |T   7  11  12  11  10  92  14  11    8
 WRMS |   5   7   8   7   4   5  11   6      |NE  7  11  10  11  10  98  14  11    8
 MEDI |   5   7   8   7   4   5  11   7      |MD  5  11  10  10   8   7  13  11    6

Table 3.0872.4   GPS week: 0872   Day: 4   MJD: 50352.0

               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  |   4   8   8   4   5   4  12   6    3 |    8  12  13  10  12   7  16  11    9
   2  |   5   8   5   7   2   6   7  10    3 |    5   8   7  10   8   6  10  13    5
   3  |   4   6   9   4   4   9  12   7    3 |    7  11  12  11  11   7  16  11    8
   4  |   5   5   8   6   5   6  17   7    3 |    5   7   8  10   9   8  14   8    5
   5  |   5   6   5   4   4   5  10  13    3 |    3   8   6   6   7   6  10  11    4
   6E |   7   7  11   7   5   8  10   8    3 |    9  11  13  14  14  11  16  13   10
   7  |   7   7   7   6   7   6  12   7    3 |    5  10   7   9  10   7  13  11    6
   9  |   6   5  11   5   4   6  10   8    3 |    7   6  12   9  13   7  16  12    7
  10  |   6   5   7   5   5 ---   5   7    3 |    7   7   9   8   7 ---   9  10    5
  14  |   6   7   6   5   6   9  10  10    3 |    6   9  10   8   9  13  11  17    6
  15  |   6   8   8   7   5   6   9  12    3 |    4   7  10   8  10   7  13  11    4
  16  |   4   5   5   5   4   6   8   6    2 |    7   8  10   8   7   9   9  10    6
  17  |   4   4   6   4   4   5   6   7    2 |    6   9   6  10   9  10  11  11    7
  18  |   9   5   5   6   7   7  18   7    3 |   16  16  14  15  16  14  20  16   13
  19  |  16   9   8   8   8   8   9   8    4 |   26  37  24  39  32  34  38  42   33
  21  |   5   4   7   4   2   3   7   8    2 |    5   7   6   8   9   8  11  11    5
  22  |   8   8   7   8   6   7  14   8    3 |    9   8  10   8  10   7  13  13    6
  23  |   4   5   6   3   4   5  13   6    2 |   11  12  11  11  12  13   9  13   10
  24  |   4   4   7   5   9   5  13   7    2 |    5   9  10  10  12   8  12   9    6
  25  |   5  10  10   8   3   7  15   6    4 |    4  10  11  12  15   6  17   8    6
  26  |   5   5  10   7   9   5  16   7    3 |    6   8   8   9  11   5  19  12    6
  27  |   5   6   8   5   5   7  10   8    3 |    6   8   9  11  11   7  13  10    6
  28  |   6   5   8   3   3   6  12   7    3 |    7   9  10   9  11   6  16   9    7
  29  |  11  19  31   6  11  24  13  23    8 |    6  13  28   8   8  37  14  17   11
  31  |   4   6   7   5   2   7   9   6    2 |   11  11  13  10  14   7  12  13    8
------|--------------------------------------|--------------------------------------
 RMS  |   7   7  10   6   6   8  12   9      |T   8  11  12  12  12  13  15  14    9
 WRMS |   5   7   7   5   5   8  12   9      |NE  8  12  12  12  12  13  15  14    9
 MEDI |   5   6   7   5   5   6  10   7      |MD  6   9  10  10  11   7  13  11    6

Table 3.0872.5   GPS week: 0872   Day: 5   MJD: 50353.0

               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  |   6  11   6  16  17   6  14   7    4 |    5  13   7  15  13   5  16  10    6
   2  |   4   9   6   7  11   8  10  10    3 |    6  10   7  10  11   7  13  12    6
   3  |   6   7  10   8  37   6  21  10    4 |    7   9  11  10  29   7  24  10    7
   4  |   4   8   4   8  11   7  18   9    3 |    6   8   7  10  11   6  18  11    5
   5  |   4   8   5   7   7   4   8   7    2 |    3   8   7   8   9   4  10  10    5
   6  |   6   9  18   7  15   7  11   8    4 |   11  11  21  15  17  12  18  19   12
   7  |   4   7  13   6  19  11  18  12    4 |    5  10  10  11  11   7  23  10    6
   9  |   6   9   7   7  19   6  10   6    3 |    4  10   8   9  18   5  14  10    5
  10  |   5   7   6   6   5 ---  10   9    3 |    6   9   8   7   8 ---  10  12    5
  14  |   6  15   6   9  17   9  20  17    5 |    7  20   9   6  13  12  23  24    8
  15  |   5  10   9   7  23   4  14  15    4 |    5   8   9   7  16   5  14  18    5
  16  |   3   7   7   8  14   7  11   7    3 |    6   8   9   9  17   6  10  12    5
  17  |   4   5   7   4  13   5   8   7    2 |    4   7   4   7  10   5  12  12    4
  18  |   7  10   6   9  30   9  16   9    4 |   11  15  11  10  23  11  19  14   10
  19  |  20  12  22  12  21  10  21  15    7 |   21  31  16  36  19  30  38  37   26
  21  |   5   8   6   7   6   5  12   9    3 |    4  10   6  12   9   6  17  11    6
  22  |   8  10   9   6  12   9  17  16    4 |    6  11   8   8  12   9  18  25    7
  23  |   5   6   6   5   8   6  16   5    3 |    9  11  10   9  11  10  13  14    9
  24  |   5   8   3   6   6   6  16   9    3 |    5   8   6   8   9   8  17  10    5
  25  |   5   7   8   7  33   8  13  11    3 |    4   8   9  13  17   6  19  13    6
  26  |   8   6   9   8   7   7  16   7    3 |    8   8   9  10  11   6  16  14    6
  27  |   5  11   7  10   8   6  14  12    4 |    6  11  11  11  11   6  14  13    6
  28  |   7   6  10   4  44   8  19   8    3 |    5  10   9  10  36   9  16  13    7
  29  |  26 --- --- ---  42  35  22  29   17 |    0 --- --- ---   0   0   0   0  ---
  31  |   7  11   8   8  32   6  14   9    4 |    7  13  10   9  25   5  17  14    7
------|--------------------------------------|--------------------------------------
 RMS  |   8   9   9   8  21  10  15  12      |T   7  12   9  12  16   9  18  15    8
 WRMS |   6   9   7   7  18  11  15  12      |NE  7  12   9  12  16   9  17  15    8
 MEDI |   5   8   7   7  15   7  14   9      |MD  6  10   9  10  13   6  17  13    6

Table 3.0872.6   GPS week: 0872   Day: 6   MJD: 50354.0

               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  |   5  10  10   3  14   4  11  10    3 |    8  12  10  12  10   9  16   9   11
   2  |   3   6   4   6   7   4   8  12    2 |    6   8   9  12  10   8  12  13    8
   3  |   6   5  10   6  21   6  13  14    3 |    6  11  12  11  20  10  18  12   10
   4  |   6   5   5   6  11   4  11  12    3 |    5   8   8   9  10   5  17   9    8
   5  |   5   6   7   4   6   6  12  14    3 |    4   8   5   7   7   4  10   9    6
   6  |   6   7  18   5  15   8   9  10    4 |   12  13  16  15  15  13  18  14   13
   7  |   8   7  11   9  14   6  14  15    4 |    6   9   8  11  11   6  19  11    9
   9  |   7   6   6   6   6   5  19  12    3 |    4   9   8   9   9   7  14  12    9
  10  |   4   6   8   5   8 ---   8  11    3 |    6   9   8   9   8 ---  10  11    7
  14  |   5   4   7   6  11   3  10  11    2 |    6   7   8   9   8   6  11   9    8
  15  |   4   8   8   6  10   4  11  12    3 |    6   7   7   8  13   6  14  10    8
  16  |   3   5   5   5   7   4   6  11    2 |    6   7   7   8   7   7  11  11    8
  17  |   4   5  10   3   4   5   7  13    3 |    6   8   6   8  10   8  11  10    8
  18  |   7   6   8   7  10   5  15  11    3 |   18  20  19  21  22  19  24  20   20
  19  |   6   5   9   6   9   5  11  11    3 |   19  17  20  20  21  18  22  19   21
  21  |   5   4   7   5   8   3   6  11    2 |    6   7   6   9  10   7  11  12    8
  22  |   5   6  10   4   9   5  12  10    3 |    6   7  10   7  10   6  15  13    7
  23  |   7   6   6   6   9   6  14  15    3 |   15  12  15  15  15  15  11  20   13
  24  |   3   6   3   5  13   5  13  10    2 |    5   8   8  10  10   6  14  11    8
  25  |   5   6   8   9   6   5  14  10    3 |    4   8   8  12  12   6  23  12   10
  26  |   6   5  10  12   9   7  13  14    4 |    7   9   9  10   9   7  17  13    9
  27  |   4   5  10   5   7   5  12  11    3 |    5   9   9  11   8   8  14  10    8
  28  |   5   6   9   4  16   4  12  12    3 |    7   8  11  10  20   6  18   9    8
  29  |   5   6 ---   4  71   3   9  13    3 |    3   4 ---   3   2   3   3   4    3
  31  |   4   6  10   5  14   5  16  10    3 |    6  11  12  10  18   8  15  11   10
------|--------------------------------------|--------------------------------------
 RMS  |   5   6   9   6  18   5  12  12      |T   8  10  10  11  12  25  15  12   10
 WRMS |   5   6   8   6  10   5  12  12      |NE  8  10  10  11  12   9  15  12   10
 MEDI |   5   6   8   5   9   5  12  11      |MD  6   8   9  10  10   7  14  11    8

Table 4: Precise Navigation Summary.

         Weekly station RMS w.r.t. the initial 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 4.0872   GPS week: 0872   MJD: 50348.0-50354.0

CENT| CLK EPO  |      BRUS      |      USUD      |      WILL      |
----|----------|----------------|----------------|----------------|
cod | cod 2382 |U  47   30   77 |U  40   31   77 |   34   23   55 |
emr | emr 2365 |   39   23   73 |   29   23   61 |   23   14   41 |
esa | esa 1622 |   39   25   71 |U  33   22   71 |   27   20   46 |
gfz | gfz 1165 |   35   24   75 |U  30   24   63 |   22   14   41 |
igr | igr 2246 |  106   59  131 |   73   55  180 |   88   59  184 |
igs | igs 2386 |   39   24   70 |   29   23   61 |   24   15   42 |
jpl | jpl 2280 |U  41   24   72 |U  28   23   60 |   23   15   44 |

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 initial 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 5.0872.0   GPS week: 0872   Day: 0   MJD: 50348.0

CENT| CLK EPO  |      BRUS      |      USUD      |      WILL      |
----|----------|----------------|----------------|----------------|
cod | cod 2400 |   44   26   84 |   34   28   82 |   35   21   56 |
emr | emr 2400 |   44   21   78 |   28   21   71 |   24   13   41 |
esa | esa 1445 |   45   24   78 |   36   27   81 |   30   17   49 |
gfz | gfz 1183 |   42   21   86 |   32   23   79 |   25   14   52 |
igr | igr 2399 |   43   22   78 |   28   22   71 |   24   13   42 |
igs | igs 2400 |   41   22   77 |   28   22   71 |   26   14   43 |
jpl | jpl 2280 |   44   23   80 |   30   22   69 |   25   13   47 |

Table 5.0872.1   GPS week: 0872   Day: 1   MJD: 50349.0

CENT| CLK EPO  |      BRUS      |      USUD      |      WILL      |
----|----------|----------------|----------------|----------------|
cod | cod 2397 |   41   28   68 |   46   32   70 |   32   25   57 |
emr | emr 2393 |   30   26   67 |   32   24   57 |   21   14   41 |
esa | esa 1621 |   27   30   68 |   32   23   65 |   30   23   50 |
gfz | gfz 1131 |   28   33   66 |   40   20   49 |   20   15   39 |
igr | igr 2391 |   28   28   67 |   35   24   60 |   20   13   43 |
igs | igs 2399 |   28   26   65 |   33   22   56 |   22   16   42 |
jpl | jpl 2293 |   30   27   66 |   32   23   56 |   24   13   45 |

Table 5.0872.2   GPS week: 0872   Day: 2   MJD: 50350.0

CENT| CLK EPO  |      BRUS      |      USUD      |      WILL      |
----|----------|----------------|----------------|----------------|
cod | cod 2277 |   49   28   76 |   41   31   72 |   34   25   54 |
emr | emr 2288 |   37   21   64 |   28   21   55 |   23   12   38 |
esa | esa 1602 |   34   21   62 |   26   21   53 |   22   13   40 |
gfz | gfz 1124 |   30   18   62 |   23   18   40 |   24   14   40 |
igr | igr 2232 |   34   22   66 |   32   22   53 |   26   11   39 |
igs | igs 2304 |   38   21   65 |   26   21   50 |   22   12   38 |
jpl | jpl 2202 |   41   23   65 |   26   21   52 |   20   12   40 |

Table 5.0872.3   GPS week: 0872   Day: 3   MJD: 50351.0

CENT| CLK EPO  |      BRUS      |      USUD      |      WILL      |
----|----------|----------------|----------------|----------------|
cod | cod 2398 |   43   28   68 |   37   32   77 |   37   27   56 |
emr | emr 2393 |   34   22   57 |   23   28   70 |   25   14   38 |
esa | esa 1640 |   34   26   53 |   28   25   79 |   27   20   43 |
gfz | gfz 1194 |   33   25   59 |   26   36   82 |   25   17   38 |
igr | igr 2398 |   33   22   56 |   24   28   71 |   23   14   37 |
igs | igs 2400 |   34   23   56 |   25   28   67 |   26   16   40 |
jpl | jpl 2201 |   34   23   54 |   25   30   73 |   24   14   37 |

Table 5.0872.4   GPS week: 0872   Day: 4   MJD: 50352.0

CENT| CLK EPO  |      BRUS      |      USUD      |      WILL      |
----|----------|----------------|----------------|----------------|
cod | cod 2400 |   56   33   84 |   35   32   73 |   32   20   50 |
emr | emr 2400 |   51   25   84 |   27   24   51 |   23   17   39 |
esa | esa 1466 |   52   26   84 |   28   21   67 |   28   23   47 |
gfz | gfz 1174 |   32   23   62 |   22   30   56 |   18   12   37 |
igr | igr 2400 |   49   26   85 |   27   26   56 |   21   15   40 |
igs | igs 2400 |   50   26   80 |   26   25   54 |   21   15   41 |
jpl | jpl 2304 |   52   26   81 |   26   27   52 |   21   21   48 |

Table 5.0872.5   GPS week: 0872   Day: 5   MJD: 50353.0

CENT| CLK EPO  |      BRUS      |      USUD      |      WILL      |
----|----------|----------------|----------------|----------------|
cod | cod 2400 |   47   34   61 |   39   28   75 |   30   21   51 |
emr | emr 2303 |   36   24   63 |   30   21   56 |   22   11   36 |
esa | esa 1712 |   36   25   64 |   32   21   66 |   23   19   37 |
gfz | gfz 1150 |   41   27   68 |   30   18   47 |   21   11   35 |
igr | igr 2220 |   38   25   55 |   38   30   63 |   24   14   47 |
igs | igs 2400 |   38   24   56 |   28   19   56 |   21   12   40 |
jpl | jpl 2304 |   40   23   65 |   27   18   50 |   20   10   38 |

Table 5.0872.6   GPS week: 0872   Day: 6   MJD: 50354.0

CENT| CLK EPO  |      BRUS      |      USUD      |      WILL      |
----|----------|----------------|----------------|----------------|
cod | cod 2400 |   45   28   94 |   45   31   88 |   37   24   56 |
emr | emr 2375 |   37   23   89 |   34   20   64 |   25   16   50 |
esa | esa 1867 |   37   20   82 |   46   17   80 |   31   23   52 |
gfz | gfz 1200 |   35   21  111 |   30   16   73 |   22   13   42 |
igr | igr 1680 |  265  144  303 |  178  132  451 |  225  153  476 |
igs | igs 2400 |   37   22   86 |   36   20   66 |   27   18   48 |
jpl | jpl 2375 |   42   24   86 |   30   20   60 |   23   18   52 |

[Mailed From: Yves Mireault <[email-masked]>]