Subject: [IGSREPORT-3017] Wk 0871 IGS Final Orbits
From: AC Coordinator / NRCan GSDivision
Date: Mon, 30 Sep 1996 5:56:39 PDT

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IGS Electronic Report    Mon Sep 30  5:56:39 PDT 1996      Message Number 3017
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Author: AC Coordinator / NRCan GSDivision
Subject: Wk 0871 IGS Final Orbits

Final IGS Orbit Combination - Week 0871   (Sep 15, 1996 - Sep 21, 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 (IGS08717.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:

 IGS08710-6.SP3  IGS GPS ephemeris files for days 0-6, week 0871 in SP3 format.
 IGS08717.ERP    Earth rotation parameters (ERP) associated with ephemerides.
 IGS08717.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. 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
         ------------+----------+-------+------------------------------
          1 (Sep 16) | 00:00:00 |  18   |   ALL    | Modeling problems
          2 (Sep 17) | 00:00:00 |  19   |   ALL    | Modeling problems
          3 (Sep 18) | 00:00:00 |  29   |   ALL    | Modeling problems
          6 (Sep 21) | 00:00:00 |  14   |   ALL    | Modeling problems

7. 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.

8. Starting with GPS wk 0866, the subdaily polar motion (Ray Model for diurnal/
   subdiurnal tides) was implemented in the Long Arc (LA) evaluation.
   This resulted in decreased LA RMS (by about 1 cm) of a seven-day arc.

ORBIT COMBINATION AND EVALUATION STATISTICS:

For a complete description of tables and statistics, please refer to the report
posted on CDDIS (IGS08717.SUM).

Table 1: Week 0871 summary.                       (Sep 15, 1996 - Sep 21, 1996)

Table 1.0871.a   GPS week: 0871   MJD: 50341.0-50347.0

         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  77 | .00  .02  .00  -.33  -.12   .07   .0  .08  .06 |   -1.2    -.5    1.3
        | .00  .00  .00   .18   .07   .09   .1           |    5.4    9.8
emr  31 |-.01 -.01  .00   .16  -.14   .33  -.1  .10  .09 |   70.1   14.9     .6
        | .00  .01  .01   .09   .07   .04   .1           |   34.9    9.0
esa  57 | .01  .01  .00   .28  -.05   .23   .2  .10  .08 |    1.0    6.9    1.2
        | .01  .01  .01   .13   .14   .21   .1           |   16.3   11.9
gfz  50 | .01 -.02  .01   .15   .11  -.08  -.2  .08  .07 |   71.9   15.3     .5
        | .00  .00  .00   .06   .11   .13   .1           |   35.0    9.3
igr  n/a| .00  .00 -.01  -.13  -.17   .04  -.1  .06  .06 |     .1    -.3     .6
        | .01  .01  .00   .12   .06   .21   .1           |    1.2    2.3
jpl  37 | .00  .02  .00  -.02  -.06   .05   .2  .06  .06 | -941.4   -7.0     .5
        | .00  .00  .00   .10   .04   .06   .1           | 1814.1   25.7
ngs  50 | .01 -.05  .00   .06   .19  -.06  -.1  .15  .15 |   -1.8    1.2   78.4
        | .01  .01  .01   .31   .35   .18   .3           |    5.3    6.8
sio  117|-.01  .01  .01  -.11   .22  -.59   .1  .15  .15 |     .0     .0     .0
        | .01  .00  .01   .09   .12   .15   .2           |     .0     .0

Table 1.0871.b   GPS week : 0871   MJD: 50341.0-50347.0

         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 |   5   3   4   4   3   3   4 |
   2  |   3   3   3   2   2   2   4 |
   3E |   4   4   4   4   4   3   3 |
   4  |   3   3   3   3   2   3   3 |
   5  |   4   3   3   3   3   3   3 |
   6E |   7   5   5   4   3   3   3 |
   7E |   4   5   5   4   3   5   4 |
   9  |   3   2   3   4   3   3   2 |
  10  |   4   3   3   3   3   3   4 |
  14  |   4   5   3   2   3   2  12 | Modeling problems on day 6.
  15  |   3   3   3   3   3   3  10 | Modeling problems on day 6.
  16  |   3   3   2   3   3   2   9 | Modeling problems on day 6.
  17  |   3   3   3   3   2   2   2 |
  18E |   4  10   4   3   4   4   4 | Modeling problems on day 1.
  19  |   3   8   4   3   3   3   3 | Modeling problems on day 1.
  21  |   2   2   3   3   3   2   3 |
  22  |   4   4   3   4   3   3   3 |
  23  |   3   3   3   3   2   3   2 |
  24  |   4   3   2   2   2   2   3 |
  25  |   3   3   3   3   2   3   3 |
  26E |   6   4   5   4   3   4   3 |
  27  |   4   4   4   3   3   3   3 |
  28E |   4   4   4   3   4   3   3 |
  29E |   4   4   4   4   4   4   5 |
  31E |   4   4   3   4   4   4   5 |

Table 2: Daily transformation of each centre to the combined IGS orbit and
         clocks for each day of the week. The transformation displayed is the
         sum of a priori and estimated transformations.
         WRMS - RMS weighted by the centres SP3 header accuracy codes.
         STA  - Number of stations in the daily solutions.
         Units: meters, mas, ppb, nano-sec, nano-sec/day.

Table 2.0871.0   GPS week: 0871   Day: 0   MJD: 50341.0

CENT STA|  DX   DY   DZ    RX    RY    RZ  SCL  RMS WRMS |   TOFT  TDRFT    RMS
--------|------------------------------------------------|---------------------
cod  75 |-.01  .03  .00  -.44  -.11   .05   .1  .07  .06 |    2.1    8.9    1.4
emr  32 | .00 -.01 -.01   .29  -.05   .31   .0  .09  .09 |   20.5   26.2     .6
esa  56 | .01  .01  .00   .34   .22   .35   .2  .10  .08 |   -2.9   19.5     .9
gfz  52 | .01 -.02  .00   .05   .01  -.13  -.3  .07  .07 |   21.9   27.5     .4
igr  n/a| .00  .00 -.01  -.07  -.13   .43  -.1  .06  .05 |    1.2    -.9     .6
jpl  37 | .00  .02  .00   .11  -.02   .02   .2  .06  .07 |  -42.9  -47.4     .5
ngs  50 | .01 -.04  .02  -.20  -.09  -.06  -.4  .13  .13 |    4.0   -3.8   80.8
sio  124|-.03  .02  .00   .01  -.02  -.75   .4  .27  .27 |     .0     .0     .0

Table 2.0871.1   GPS week: 0871   Day: 1   MJD: 50342.0

CENT STA|  DX   DY   DZ    RX    RY    RZ  SCL  RMS WRMS |   TOFT  TDRFT    RMS
--------|------------------------------------------------|---------------------
cod  77 | .00  .02  .00  -.20  -.07   .15  -.1  .10  .06 |     .7    1.8    1.3
emr  30 |-.01 -.01  .00   .09  -.22   .28  -.1  .10  .10 |   40.7   11.5     .7
esa  56 | .02  .00 -.01   .52  -.19   .22   .3  .13  .08 |    5.9    1.4    1.3
gfz  48 | .00 -.02  .01   .08   .19   .03  -.3  .08  .07 |   42.5   11.8     .6
igr  n/a| .00 -.01 -.01   .05  -.10   .23  -.1  .09  .07 |   -1.1    2.6     .7
jpl  37 |-.01  .02  .00   .06   .01   .13   .3  .07  .07 |   42.2   11.8     .7
ngs  50 | .00 -.06  .01  -.32  -.24   .21  -.2  .15  .14 |   -1.9    1.9   79.2
sio  117|-.01  .01  .01  -.19   .18  -.79  -.2  .09  .09 |     .0     .0     .0

Table 2.0871.2   GPS week: 0871   Day: 2   MJD: 50343.0

CENT STA|  DX   DY   DZ    RX    RY    RZ  SCL  RMS WRMS |   TOFT  TDRFT    RMS
--------|------------------------------------------------|---------------------
cod  77 | .00  .01 -.01   .00  -.08   .18  -.1  .07  .06 |   -6.0   -2.1    1.4
emr  31 |-.01  .00  .01   .06  -.08   .40  -.1  .10  .10 |   46.1   18.8     .5
esa  57 | .00  .01 -.02   .12  -.05  -.10   .3  .11  .09 |     .1   21.2    1.2
gfz  50 | .01 -.02  .01   .13   .12  -.11  -.1  .08  .07 |   47.9   19.1     .4
igr  n/a| .01  .00 -.01  -.03  -.15  -.12  -.1  .05  .05 |    -.5   -1.8     .5
jpl  37 | .00  .01 -.01  -.17  -.11   .09   .2  .06  .05 |  372.2    1.1     .5
ngs  50 | .01 -.05  .00   .25   .21  -.06   .2  .12  .12 |   -9.0    9.1   78.5
sio  114| .00  .02  .01  -.21   .21  -.53   .0  .08  .08 |     .0     .0     .0

Table 2.0871.3   GPS week: 0871   Day: 3   MJD: 50344.0

CENT STA|  DX   DY   DZ    RX    RY    RZ  SCL  RMS WRMS |   TOFT  TDRFT    RMS
--------|------------------------------------------------|---------------------
cod  75 | .00  .01 -.01  -.31  -.04   .17  -.1  .06  .06 |    8.0  -16.2    1.3
emr  29 |-.01 -.01  .01   .10  -.21   .35   .1  .09  .09 |   83.5   -2.3     .6
esa  56 | .00  .00  .01   .27  -.16   .08   .2  .08  .07 |   23.4  -11.9     .8
gfz  50 | .01 -.02  .00   .21   .23  -.01  -.2  .08  .07 |   85.2   -2.2     .5
igr  n/a| .01 -.01  .00  -.18  -.15  -.11  -.2  .06  .05 |    1.6   -3.1     .6
jpl  37 | .00  .01  .00   .03  -.07  -.03   .3  .05  .05 |-3574.6  -33.7     .5
ngs  50 | .02 -.04  .02  -.16   .19  -.26  -.5  .16  .15 |    6.3  -11.1   78.4
sio  113| .00  .01  .00  -.19   .19  -.38   .1  .09  .09 |     .0     .0     .0

Table 2.0871.4   GPS week: 0871   Day: 4   MJD: 50345.0

CENT STA|  DX   DY   DZ    RX    RY    RZ  SCL  RMS WRMS |   TOFT  TDRFT    RMS
--------|------------------------------------------------|---------------------
cod  76 |-.01  .02  .00  -.47  -.19   .02  -.1  .06  .06 |   -8.0    9.0    1.4
emr  31 | .00 -.01  .00   .12  -.11   .36  -.2  .08  .08 |   83.7   16.5     .7
esa  57 | .01  .00 -.01   .26  -.07   .20   .2  .08  .07 |  -29.4    1.9    2.0
gfz  51 | .00 -.03  .01   .16   .12  -.16  -.1  .07  .07 |   85.4   16.9     .5
igr  n/a| .00  .00  .00  -.19  -.27  -.09   .0  .05  .04 |    1.0   -1.3     .7
jpl  37 | .01  .02  .00  -.09  -.10   .06   .3  .05  .05 |-3606.4  -14.4     .6
ngs  50 | .00 -.06 -.01   .58   .38  -.26  -.2  .13  .13 |   -3.5    4.1   76.9
sio  118| .00  .02  .01  -.09   .26  -.50   .0  .07  .07 |     .0     .0     .0

Table 2.0871.5   GPS week: 0871   Day: 5   MJD: 50346.0

CENT STA|  DX   DY   DZ    RX    RY    RZ  SCL  RMS WRMS |   TOFT  TDRFT    RMS
--------|------------------------------------------------|---------------------
cod  77 | .00  .02  .00  -.42  -.23  -.02  -.1  .07  .06 |   -1.3  -10.8    1.4
emr  31 |-.01  .00 -.01   .20  -.22   .32  -.1  .10  .08 |   99.9   12.9     .5
esa  57 | .01  .01 -.01   .22   .05   .57   .3  .07  .07 |   11.7    1.9     .6
gfz  51 | .01 -.03  .01   .23   .20   .08  -.1  .07  .07 |  101.9   13.0     .5
igr  n/a| .01  .00 -.01  -.18  -.21   .04  -.3  .05  .05 |    -.1    -.7     .5
jpl  37 | .00  .01  .00  -.07  -.09  -.02   .1  .05  .05 |  101.5   13.1     .5
ngs  50 | .00 -.05 -.01   .08   .05  -.11  -.1  .12  .12 |   -3.4    1.0   77.2
sio  115|-.01  .01  .01   .01   .33  -.69   .1  .08  .08 |     .0     .0     .0

Table 2.0871.6   GPS week: 0871   Day: 6   MJD: 50347.0

CENT STA|  DX   DY   DZ    RX    RY    RZ  SCL  RMS WRMS |   TOFT  TDRFT    RMS
--------|------------------------------------------------|---------------------
cod  79 |-.01  .02  .00  -.49  -.10  -.04  -.1  .09  .07 |   -3.6    5.6    1.2
emr  31 | .00  .00 -.01   .25  -.09   .31  -.2  .11  .10 |  116.4   20.5     .6
esa  59 | .00  .01  .00   .21  -.15   .28   .2  .10  .07 |   -1.9   14.0     .9
gfz  48 | .01 -.03  .01   .17  -.08  -.28  -.3  .07  .07 |  118.2   20.7     .5
igr  n/a| .01  .01 -.02  -.30  -.18  -.08  -.1  .09  .07 |   -1.5    3.0     .6
jpl  37 | .00  .02 -.01   .00  -.07   .12   .1  .07  .07 |  118.3   20.3     .5
ngs  49 | .02 -.05  .00   .17   .84   .12   .4  .20  .20 |   -4.8    7.0   77.5
sio  118|-.01  .01  .02  -.12   .36  -.53   .3  .21  .21 |     .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 3.0871.0   GPS week: 0871   Day: 0   MJD: 50341.0

               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   8  10   9   8  10  30   8    5 |   15  20  17  21  14  15  23  10   16
   2  |   4   5  10   4   5   5  11  15    3 |    9  12  10  12  11   9  12  14   10
   3E |   7   9   7   6   7  10  17  17    4 |    8  17  11  15  13   8  23   8   12
   4  |   6   5   4  11   6   4  12  23    3 |    4   8   6   8   7   6  11  15    6
   5  |   4   8  11   7   4   5   8  38    4 |    7  10   9  10   8   6  11  29    7
   6E |  12  13   8  13   7   9  12  80    7 |    7  15   9  14  11   8  16  51   10
   7E |   5  16   7   6   7   5  19  16    4 |    5  15   8  11   9   7  16  11    9
   9  |   4   8   9   5   6   5   8  18    3 |    8  11  10  11   9   8  13  17    8
  10  |   6   8   6   4   3 ---   6  37    4 |    9  13  13  11   9 ---  11  22   10
  14  |  14   8   9  10   7   7   9  16    4 |   17  30  18  29  26  28  25  30   26
  15  |   6   5   9   5   5   5  16   9    3 |    5   9   7   7   6   6  12   8    6
  16  |   4   9   7   6   3   6   8  32    3 |    8  11  12   9   6   7  10  17    7
  17  |   3   9   9   4   3   4   8  20    3 |    4   8   7   6   5   5   8  19    5
  18E |  14   8  13   7   6   8  15   9    4 |    4   2   3   2   2   2   4   3    2
  19  |   7   8   7   3   4   6  10  20    3 |    8  11  18   2  10  13  14  15   13
  21  |   5   6   6   5   4   4   8   9    2 |    7  11  10  13  10   9  15  10    9
  22  |   6  13   8   8   5   7  10  16    4 |    8  14   9   9  11   7  11  13    8
  23  |   5   7   6   5   4   5  12  11    3 |   16  17  16  16  15  18  12  16   16
  24  |   4   7   6   4  10   4  15  44    4 |    4  10   7   6  11   4  10  35    6
  25  |   7   8   6   5   6   4   8  12    3 |    8   8  10  11   9   7  16   9    8
  26E |   7  12  21  15   7   9  16  40    6 |    9  16  11  14   9   8  20  24   11
  27  |   5   6  14   4   5   6  15  19    4 |    8  13  11  10  12   8  14  15    9
  28E |   6  12   8   8   2   7  11  17    4 |    7  13  11  16   9   8  13  18   11
  29E |  10  12  12   9   6   6  11   9    4 |    9  15  10  11  10   5  17  11    8
  31E |   8   8  19   8   7   8  14   9    4 |    7  15   8  14   9   8  18   4   11
------|--------------------------------------|--------------------------------------
 RMS  |   7   9  10   7   6   6  13  27      |T   8  13  11  12  10  10  14  19   10
 WRMS |   6   9   8   7   5   7  13  27      |NE  8  13  11  12  11  11  13  19   10
 MEDI |   6   8   8   6   6   6  11  17      |MD  8  13  10  11   9   8  13  15    9

Table 3.0871.1   GPS week: 0871   Day: 1   MJD: 50342.0

               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 |   8   9   6   8   4   7  15   8    3 |   11  18  14  19  14  11  24  12   13
   2  |   3   8   6   5   4   5  12  10    3 |   10  13  12  12  10   9  13   9   10
   3E |   7  11   7   6   8   6  17  10    4 |    6  17   8  14  13   7  25   7    8
   4  |   7   5   9   6   8   6   9   6    3 |    5   8  12  14   8   7  13   8    7
   5  |   6   5  10   5   5   4  15   5    3 |    4   7   7   6   6   5  13  12    5
   6E |  14  12  11  15  10   8  16   8    5 |    6  11  10  13  14   9  19  20    6
   7E |   5  17   7  15   6   6  25  10    5 |    4  13   7  13   8   4  16  10    6
   9  |   3   6   7   5   9   5   8   7    2 |    5   7   8  10   7   5  13   7    5
  10  |   6   6   8   8   6 ---  10   8    3 |    7  12  10  10  10 ---  11  13    7
  14  |  17   9  18   9   6   8  11   8    5 |    8  23  19  23  19  21  24  27   18
  15  |   5   6   8   6   4   8  12   5    3 |    3  10   8  10   6   5  12   7    5
  16  |   6   8   9   8   7   5  12  12    3 |    4  11  10   8   8   6   9  14    5
  17  |   3   6   4   7   6   5  12   6    3 |    5   8   8   7   7   5  11  11    6
  18E |  34  22  34 ---  19  13  18  12   10 |   14  22  27 ---  16  13  14  11   10
  19  |  20   6  29 ---  22  15  18  11    8 |   12   8  41 ---  14  36  29  26   26
  21  |   5   7   7   5   3   4   6   6    2 |    4   9   6  10   8   5  11   8    6
  22  |   7   9   8   9   5   6  14  11    4 |    8  12   9   8   7   6  14   9    5
  23  |   4   6   8   6   4   4  11   7    3 |    9  11  10  13   8  10  10  14    9
  24  |   6   6   7   7   6   7  10   4    3 |    4   9   8   9   8   6  13  16    5
  25  |   6   6  10   9   6   4  15   6    3 |    4   8   7  14   8   4  16   7    6
  26E |   7   8   8   8  11   5  20   9    4 |    8  13  14  14  12   9  24  12    9
  27  |   4   7  12   8   8   7  18  14    4 |    5  13  13  11  13   6  18  18    7
  28E |   5  16  13   5   8   6  10  11    4 |    7  13  13  11  12   7  15  11    6
  29E |   6  12  14   7   9   8  15   6    4 |    6  12  15  10   8   4  18   5    5
  31E |   6  10   9   6   6   5  19  11    4 |    7  15   9  13  10   6  24   9    8
------|--------------------------------------|--------------------------------------
 RMS  |  10  10  13   8   9   7  15   9      |T   7  12  14  12  10  10  17  13    9
 WRMS |   6  10   8   7   7   7  14   9      |NE  6  11  14  11   9  12  15  14    9
 MEDI |   6   8   8   7   6   6  14   8      |MD  6  12  10  11   8   6  14  11    6

Table 3.0871.2   GPS week: 0871   Day: 2   MJD: 50343.0

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

Table 3.0871.3   GPS week: 0871   Day: 3   MJD: 50344.0

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

Table 3.0871.4   GPS week: 0871   Day: 4   MJD: 50345.0

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

Table 3.0871.5   GPS week: 0871   Day: 5   MJD: 50346.0

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

Table 3.0871.6   GPS week: 0871   Day: 6   MJD: 50347.0

               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   7  14  10   6   6  14  19    4 |   14  18  14  23  14  13  19  13   13
   2  |   5  11   4   8   6   4   9  27    4 |   10  16  11  12  12  10  17  23    9
   3E |   7   8   7   7   5   7  14  11    3 |   10  18  17  21  17  11  26   9   15
   4  |   5  14   7   9   4   5  12   7    3 |    5  11   8  10  10   6  16   8    9
   5  |   5   8   7   6   3   3  16   8    3 |    6  11   8   9   5   6  11  10    8
   6E |   5  11   6   9   6   5  17   9    3 |    6  12   8  15  13   8  16  15   10
   7E |   6   9  11   7   5   6  19  15    4 |    7  15   9  12  11   6  23  13   10
   9  |   7   7   4   5   4   4  10   9    2 |    8   9  10  12  10   8  16  10   10
  10  |   6   5   9   7  17 ---  17  20    4 |    7  10  15   9  13 ---  12  20    8
  14  |  22  27 --- ---  15  18  48  22   12 |   97  99 --- ---  97  98 100 101   99
  15  |  12  18  17   6  10   5  25  76   10 |    9  11   7   9  13   7  18  65    9
  16  |  21  16  26 ---  18  16  33  18    9 |   12  36  39 ---  19  38  35  30   29
  17  |   5   6   5   5   4   6  10   6    2 |    7  10   6  12  10   8  17   7    9
  18E |  11  11   9   9  12   7  16  10    4 |   17   9   9  14  12   8  15  15    9
  19  |   7  14   5   8   5   5  15   8    3 |    6  12   8  10  10   5  14  10    7
  21  |   5   5   3   6   3   4  13  16    3 |    5   8   8  13   8   7  13  10    7
  22  |   6   7   6   8   8   6  16  14    3 |    7  10  10   9   9   9  16  12    6
  23  |   6   4   3   4   6   5  13   7    2 |   15  16  16  16  16  17  14  17   16
  24  |   6   7   9   3  11   4  10   8    3 |    4   9   8   9  12   6  14  10    9
  25  |   6   7   7   6   5   4  15  16    3 |    8   8  11  11  10   7  14  10    9
  26E |   5   8   9   7   9   6  17  11    3 |   10  12  11  14  14  10  17  14   12
  27  |   4   9   8   6   5   4  16  13    3 |    8  11   8  12  12   7  19  15   11
  28E |   7  11   7   7   7   7  11  10    3 |    6  12   9  15  12   9  18   9    9
  29E |  13  11   9   9   7   7  35  18    5 |   17  15  13  14  16  10  25  18   13
  31E |   9  16   5   7   9   9  23  20    5 |   17  21  12  14  15   9  23  12   13
------|--------------------------------------|--------------------------------------
 RMS  |   9  11  10   7   9   7  20  21      |T  21  24  13  13  22  23  27  27   22
 WRMS |   7  10   7   7   7   7  20  21      |NE 25  28  13  11  26  28  30  33   27
 MEDI |   6   9   7   7   6   6  16  13      |MD  8  12  10  12  12   8  17  13    9

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 4.0871   GPS week: 0871   MJD: 50341.0-50347.0

CENT| CLK EPO  |      BRUS      |      USUD      |      WILL      |
----|----------|----------------|----------------|----------------|
cod | cod 2399 |U  45   30   74 |U  41   30   85 |   33   23   56 |
emr | emr 2380 |   36   24   70 |   36   23   73 |U  21   13   38 |
esa | esa 1703 |   60   24   67 |U  32   22   76 |   24   18   42 |
gfz | gfz 1155 |   37   27   76 |U  32   22   65 |   22   12   42 |
igr | igr 2361 |   37   26   68 |   36   23   72 |   21   13   38 |
igs | igs 2400 |   38   24   67 |   33   22   70 |   22   14   39 |
jpl | jpl 2254 |U  38   26   68 |U  34   23   68 |   21   14   42 |

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 5.0871.0   GPS week: 0871   Day: 0   MJD: 50341.0

CENT| CLK EPO  |      BRUS      |      USUD      |      WILL      |
----|----------|----------------|----------------|----------------|
cod | cod 2400 |   45   33   76 |   35   28   77 |   32   22   57 |
emr | emr 2396 |   37   28   80 |   26   21   60 |   21   13   43 |
esa | esa 1899 |  134   27   78 |   32   23   60 |   27   19   41 |
gfz | gfz 1181 |   39   32   78 |   33   21   60 |   22    8   42 |
igr | igr 2382 |   40   31   73 |   28   20   62 |   21   14   42 |
igs | igs 2400 |   53   28   71 |   26   20   56 |   22   14   40 |
jpl | jpl 2173 |   39   28   69 |   26   19   54 |   21   12   40 |

Table 5.0871.1   GPS week: 0871   Day: 1   MJD: 50342.0

CENT| CLK EPO  |      BRUS      |      USUD      |      WILL      |
----|----------|----------------|----------------|----------------|
cod | cod 2400 |   44   32   73 |   35   28   79 |   34   21   56 |
emr | emr 2301 |   30   23   65 |   32   25   60 |   19   10   42 |
esa | esa 1832 |   37   22   66 |   34   24   72 |   23   17   45 |
gfz | gfz 1088 |   45   24   83 |   34   21   42 |   23    9   50 |
igr | igr 2263 |   40   22   70 |   30   27   67 |   18   10   38 |
igs | igs 2400 |   36   23   67 |   28   24   66 |   21   11   40 |
jpl | jpl 2268 |   39   23   65 |   28   24   64 |   18   10   42 |

Table 5.0871.2   GPS week: 0871   Day: 2   MJD: 50343.0

CENT| CLK EPO  |      BRUS      |      USUD      |      WILL      |
----|----------|----------------|----------------|----------------|
cod | cod 2397 |   43   33   76 |   33   26   77 |   39   24   61 |
emr | emr 2393 |   38   24   69 |   27   17   60 |   26   15   43 |
esa | esa 1691 |   32   27   64 |   28   17   69 |   27   16   46 |
gfz | gfz 1181 |   35   35   73 |   27   18   52 |   23   17   50 |
igr | igr 2375 |   37   28   70 |   25   14   57 |   24   14   44 |
igs | igs 2400 |   35   27   68 |   25   16   59 |   27   15   45 |
jpl | jpl 2268 |   35   28   66 |   26   15   61 |   24   16   47 |

Table 5.0871.3   GPS week: 0871   Day: 3   MJD: 50344.0

CENT| CLK EPO  |      BRUS      |      USUD      |      WILL      |
----|----------|----------------|----------------|----------------|
cod | cod 2399 |   44   28   65 |   45   33   92 |   31   23   56 |
emr | emr 2383 |   35   24   60 |   39   27   84 |   22   13   33 |
esa | esa 1640 |   31   25   57 |   39   25   93 |   27   20   39 |
gfz | gfz 1183 |   32   27   56 |   37   27   80 |   20   11   38 |
igr | igr 2351 |   36   26   54 |   41   28   85 |   23   13   35 |
igs | igs 2400 |   34   24   57 |   35   26   80 |   22   14   36 |
jpl | jpl 2263 |   42   25   62 |   37   26   76 |   23   14   38 |

Table 5.0871.4   GPS week: 0871   Day: 4   MJD: 50345.0

CENT| CLK EPO  |      BRUS      |      USUD      |      WILL      |
----|----------|----------------|----------------|----------------|
cod | cod 2400 |   54   32   95 |   44   25   96 |   30   20   44 |
emr | emr 2394 |   43   24   97 |   34   21   81 |   18   12   33 |
esa | esa 1627 |   36   24   88 |   32   20   83 |   23   19   36 |
gfz | gfz 1183 |   37   27  112 |   24   17   64 |   19   14   39 |
igr | igr 2365 |   39   28   94 |   35   20   75 |   18   14   35 |
igs | igs 2400 |   41   25   92 |   33   19   78 |   20   12   33 |
jpl | jpl 2267 |   38   27   94 |   31   20   71 |   20   10   37 |

Table 5.0871.5   GPS week: 0871   Day: 5   MJD: 50346.0

CENT| CLK EPO  |      BRUS      |      USUD      |      WILL      |
----|----------|----------------|----------------|----------------|
cod | cod 2400 |   36   28   70 |   41   34   92 |   30   25   59 |
emr | emr 2392 |   27   21   56 |   39   27   89 |   18   12   38 |
esa | esa 1667 |   27   21   56 |   28   26   90 |   20   18   44 |
gfz | gfz 1182 |   25   19   55 |   42   22   92 |   20   12   35 |
igr | igr 2395 |   26   21   55 |   39   26   84 |   18   13   37 |
igs | igs 2400 |   25   21   55 |   36   26   84 |   19   14   39 |
jpl | jpl 2268 |   28   23   55 |   39   27   81 |   20   12   40 |

Table 5.0871.6   GPS week: 0871   Day: 6   MJD: 50347.0

CENT| CLK EPO  |      BRUS      |      USUD      |      WILL      |
----|----------|----------------|----------------|----------------|
cod | cod 2399 |   46   26   57 |   48   30   78 |   34   23   55 |
emr | emr 2399 |   40   21   55 |   47   24   71 |   20   14   35 |
esa | esa 1565 |   39   24   51 |   32   21   61 |   23   19   40 |
gfz | gfz 1087 |   41   24   59 |   23   24   49 |   27   11   39 |
igr | igr 2398 |   40   24   54 |   47   26   72 |   23   15   37 |
igs | igs 2400 |   39   22   52 |   45   24   62 |   23   15   37 |
jpl | jpl 2268 |   43   24   56 |   47   25   65 |   23   19   51 |

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