Subject: [IGSREPORT-3123] Wk 0876 IGS Final Orbits
From: AC Coordinator / NRCan GSDivision
Date: Tue, 5 Nov 1996 6:46:10 PST

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IGS Electronic Report    Tue Nov  5  6:46:10 PST 1996      Message Number 3123
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Author: AC Coordinator / NRCan GSDivision
Subject: Wk 0876 IGS Final Orbits

Final IGS Orbit Combination - Week 0876   (Oct 20, 1996 - Oct 26, 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 (IGS08767.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:

 IGS08760-6.SP3  IGS GPS ephemeris files for days 0-6, week 0876 in SP3 format.
 IGS08767.ERP    Earth rotation parameters (ERP) associated with ephemerides.
 IGS08767.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. New clock offsets and drifts were estimated for centres showing reference
   clock resets.  Note that only the first clock offset and drift are output
   to the summary file.  However, the clock combination and the listed RMS
   include all the clock segments.  In summary, the following clock
   shifts/resets were noticed and accounted for:

                  Day | Centre |  Time  |  Jump
                  ----+--------+--------+-------------
                   2  |  GFZ   | ~16:00 | ~ -89.3 ns

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
                  ----+--------+---------------
                  2-6 |  SIO   |  ALL (High Z-Rotations)

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

          Day (Date) |   TIME   |  PRN  | Centres  | Reason
         ------------+----------+-------+----------+-------------------
          3 (Oct 23) | 00:00:00 |  19   |   ALL    | Modeling problems

ORBIT COMBINATION AND EVALUATION STATISTICS:

For a complete description of tables and statistics, please refer to the report
posted on CDDIS (IGS08767.SUM).

Table 1: Week 0876 summary.                       (Oct 20, 1996 - Oct 26, 1996)

Table 1.0876.a   GPS week: 0876   MJD: 50376.0-50382.0

         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  82 | .00  .02  .00  -.40  -.09   .26   .0  .07  .07 |   -1.1     .2    1.3
        | .00  .00  .01   .08   .15   .14   .1           |    5.2    8.8
emr  29 |-.01 -.01 -.01   .54  -.10   .18  -.1  .10  .09 |   63.1   16.9     .5
        | .01  .01  .01   .07   .17   .28   .1           |   40.6   19.1
esa  56 | .00  .00  .01  -.17   .02   .33   .1  .09  .07 |    4.9   15.2     .8
        | .00  .00  .01   .25   .12   .07   .1           |   38.9    5.9
gfz  49 | .00 -.03  .00   .05   .13  -.29  -.2  .08  .06 |   80.6   27.5     .7
        | .01  .00  .01   .13   .06   .12   .1           |   29.4    5.7
igr  n/a| .01 -.01 -.01   .04  -.14  -.20   .0  .06  .06 |    -.6    1.2     .8
        | .00  .00  .00   .10   .14   .14   .1           |    1.2    2.3
jpl  37 | .00  .02  .00  -.07  -.07  -.02   .2  .07  .07 |  198.4   18.9     .5
        | .00  .00  .01   .14   .06   .08   .1           |  142.7   14.0
ngs  49 | .00 -.04 -.01   .53  -.01  -.43  -.1  .13  .13 |    1.0   -2.9   78.3
        | .01  .00  .01   .11   .22   .28   .2           |    4.8    6.8
sio  29 |-.01  .02  .02  -.37  -.01 -2.30   .1  .09  .08 |     .0     .0     .0
        | .01  .00  .00   .30   .26  1.71   .1           |     .0     .0

Table 1.0876.b   GPS week : 0876   MJD: 50376.0-50382.0

         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  |   3   2   3   4   3   3   4 |
   2  |   3   3   3   3   3   3   3 |
   3  |   3   3   3   3   3   3   4 |
   4  |   3   4   3   3   3   4   3 |
   5  |   3   3   3   3   3   3   4 |
   6  |   3   2   2   3   4   3   3 |
   7  |   3   3   4   4   3   4   4 |
   9E |   4   4   5   5   5   5   6 |
  10  |   3   3   3   4   3   3   5 |
  14  |   2   2   3   3   8   4   3 |
  15  |   3   3   3   4   3   3   4 |
  16  |   2   2   3   3   3   3   7 |
  17  |   2   3   2   3   3   3   3 |
  18  |   3   3   4   3   3   3   3 |
  19E |   7   6   6  10  10   6   6 |
  21  |   3   3   2   3   3   3   3 |
  22  |   3   3   3   3   3   3   3 |
  23  |   4   4   4   4   5   4   4 |
  24  |   2   3   3   3   3   2   3 |
  25E |   3   4   5   4   4   4   7 |
  26  |   2   3   3   3   3   3   4 |
  27E |   4   3   5   5   4   5   5 |
  28  |   2   3   3   3   3   3   3 |
  29  |   2   2   2   3   3   2   3 |
  30  |   5   5   6   5   6   5   6 |
  31  |   4   3   4   4   3   3   4 |

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 2.0876.0   GPS week: 0876   Day: 0   MJD: 50376.0

CENT STA|  DX   DY   DZ    RX    RY    RZ  SCL  RMS WRMS |   TOFT  TDRFT    RMS
--------|------------------------------------------------|---------------------
cod  80 | .00  .02 -.01  -.35  -.16   .26  -.1  .06  .05 |    3.2    3.7    1.3
emr  28 | .00 -.01 -.01   .61   .04   .09  -.1  .11  .10 |   67.7   27.7     .6
esa  54 | .00  .00  .01  -.01  -.21   .25   .2  .07  .06 |    -.7   20.3    1.0
gfz  48 | .00 -.03 -.01   .09   .18  -.14  -.3  .09  .07 |   69.5   27.5     .5
igr  n/a| .00 -.01 -.01   .04  -.13  -.20   .0  .05  .04 |   -1.2    3.7     .6
jpl  37 | .00  .01  .00  -.02  -.14   .00   .2  .05  .06 |   69.2   27.4     .5
ngs  50 |-.01 -.05  .00   .59   .01  -.13   .1  .12  .12 |    5.3   -4.7   78.0
sio  29 | .01  .02  .03  -.37   .33  -.32   .0  .08  .08 |     .0     .0     .0

Table 2.0876.1   GPS week: 0876   Day: 1   MJD: 50377.0

CENT STA|  DX   DY   DZ    RX    RY    RZ  SCL  RMS WRMS |   TOFT  TDRFT    RMS
--------|------------------------------------------------|---------------------
cod  84 | .00  .02 -.01  -.33  -.28   .13   .0  .07  .06 |    7.8  -17.9    1.2
emr  28 |-.01 -.01  .00   .64  -.06   .28  -.1  .09  .09 |   87.5   18.8     .5
esa  55 | .00  .00  .01   .04  -.02   .32   .3  .08  .07 |   -4.2   11.7     .8
gfz  46 | .00 -.02  .00  -.02   .08  -.24  -.2  .07  .06 |   89.0   19.1     .4
igr  n/a| .01 -.01  .00   .10  -.06  -.03  -.1  .05  .05 |   -2.3    3.7     .5
jpl  37 | .00  .01  .00  -.03   .00  -.08   .3  .05  .05 |  349.4    2.0     .5
ngs  50 | .00 -.04 -.02   .49  -.08  -.75  -.1  .14  .14 |    7.1  -13.1   76.4
sio  28 | .00  .02  .02  -.26   .25   .23   .1  .08  .07 |     .0     .0     .0

Table 2.0876.2   GPS week: 0876   Day: 2   MJD: 50378.0

CENT STA|  DX   DY   DZ    RX    RY    RZ  SCL  RMS WRMS |   TOFT  TDRFT    RMS
--------|------------------------------------------------|---------------------
cod  84 | .01  .03  .00  -.54  -.12   .24   .0  .07  .06 |   -4.7    3.0    1.1
emr  29 |-.01  .00 -.02   .54  -.19   .32  -.2  .09  .08 |   16.0  -14.5     .6
esa  58 | .00 -.01  .00   .19   .08   .33   .2  .10  .08 |  -18.4   11.4     .9
gfz  50 | .00 -.02  .01  -.14   .19  -.26  -.3  .07  .06 |  103.9   23.8    1.4
igr  n/a| .00 -.01 -.01   .02   .09  -.15  -.1  .07  .06 |    -.1    -.2     .8
jpl  37 | .00  .02  .00  -.15  -.02  -.06   .2  .06  .06 |  347.2    2.6     .5
ngs  49 | .00 -.05  .01   .51  -.05  -.41   .1  .11  .11 |     .5   -6.5   78.1
sio  28 |-.01  .02  .02  -.19   .14 -1.69   .3  .09  .08 |     .0     .0     .0

Table 2.0876.3   GPS week: 0876   Day: 3   MJD: 50379.0

CENT STA|  DX   DY   DZ    RX    RY    RZ  SCL  RMS WRMS |   TOFT  TDRFT    RMS
--------|------------------------------------------------|---------------------
cod  83 |-.01  .02 -.01  -.31  -.23   .42   .0  .07  .06 |   -6.9    9.1    1.3
emr  31 | .00  .00  .00   .53   .18   .36  -.2  .10  .09 |    4.6   -4.4     .5
esa  58 | .00  .00  .02  -.40   .11   .27   .0  .08  .07 |  -16.4   16.2     .6
gfz  51 | .00 -.03  .00   .04   .07  -.38  -.1  .10  .07 |   30.7   31.6     .4
igr  n/a| .01  .00  .00  -.10  -.21  -.19   .1  .07  .06 |     .2    -.1     .5
jpl  37 | .01  .02  .00   .05  -.02  -.16   .1  .07  .07 |  352.5    9.9     .4
ngs  50 | .00 -.04 -.02   .59  -.07  -.66   .0  .15  .15 |   -6.5    9.1   80.6
sio  32 |-.01  .01  .02  -.06  -.04 -3.64  -.1  .08  .07 |     .0     .0     .0

Table 2.0876.4   GPS week: 0876   Day: 4   MJD: 50380.0

CENT STA|  DX   DY   DZ    RX    RY    RZ  SCL  RMS WRMS |   TOFT  TDRFT    RMS
--------|------------------------------------------------|---------------------
cod  81 | .00  .02  .00  -.44   .17   .48   .0  .08  .07 |   -3.5    4.1    1.2
emr  29 | .00  .00 -.01   .49  -.09  -.32   .0  .10  .09 |   56.9   37.8     .6
esa  56 |-.01  .01  .02  -.41  -.03   .32   .1  .09  .08 |  -28.3   24.4     .7
gfz  51 | .00 -.02  .00  -.02   .13  -.31  -.3  .06  .05 |   58.9   36.9     .5
igr  n/a| .01 -.01 -.01   .15  -.09  -.05   .0  .08  .06 |    -.1    -.2     .5
jpl  37 | .01  .02  .00   .12  -.15   .08   .3  .07  .08 |   58.3   37.7     .4
ngs  50 | .00 -.04 -.02   .54  -.23  -.57  -.3  .14  .14 |     .8   -2.1   78.3
sio  32 |-.01  .02  .02  -.22  -.27 -3.20   .0  .09  .08 |     .0     .0     .0

Table 2.0876.5   GPS week: 0876   Day: 5   MJD: 50381.0

CENT STA|  DX   DY   DZ    RX    RY    RZ  SCL  RMS WRMS |   TOFT  TDRFT    RMS
--------|------------------------------------------------|---------------------
cod  82 | .01  .03  .00  -.39   .02   .13   .1  .08  .08 |     .5    2.9    1.3
emr  29 |-.01  .00  .00   .52  -.22   .01   .0  .09  .08 |   95.0   24.7     .5
esa  57 |-.01 -.01  .01  -.38   .06   .42   .1  .09  .08 |   15.4   15.4     .8
gfz  53 | .00 -.02  .00   .13   .06  -.22  -.3  .06  .06 |   96.6   25.0     .4
igr  n/a| .00  .00  .00  -.07  -.33  -.44  -.1  .06  .05 |    1.2   -1.7    1.4
jpl  37 | .00  .02  .00  -.16  -.11   .02   .2  .06  .06 |   96.5   24.5     .4
ngs  49 | .02 -.04 -.02   .32   .45   .00  -.3  .12  .12 |    3.0   -3.5   78.3
sio  31 |-.01  .02  .02  -.56  -.30 -3.63   .0  .09  .08 |     .0     .0     .0

Table 2.0876.6   GPS week: 0876   Day: 6   MJD: 50382.0

CENT STA|  DX   DY   DZ    RX    RY    RZ  SCL  RMS WRMS |   TOFT  TDRFT    RMS
--------|------------------------------------------------|---------------------
cod  83 | .00  .03  .00  -.45  -.03   .19   .2  .08  .08 |   -3.9   -3.7    1.3
emr  30 |-.01  .00  .00   .44  -.34   .52  -.2  .10  .09 |  114.2   28.1     .6
esa  57 | .00  .00  .01  -.27   .13   .42   .1  .09  .09 |   87.2    6.7     .7
gfz  47 |-.01 -.03  .00   .28   .20  -.51  -.2  .08  .07 |  115.6   28.8     .5
igr  n/a| .00 -.01  .00   .14  -.26  -.31  -.1  .08  .07 |   -1.9    3.2     .7
jpl  37 | .01  .02  .01  -.28  -.06   .03   .4  .09  .09 |  115.6   28.1     .5
ngs  48 | .00 -.05 -.02   .64  -.12  -.49  -.3  .14  .15 |   -3.5     .2   78.3
sio  25 |-.02  .02  .02  -.95  -.20 -3.86   .1  .12  .11 |     .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 3.0876.0   GPS week: 0876   Day: 0   MJD: 50376.0

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

Table 3.0876.1   GPS week: 0876   Day: 1   MJD: 50377.0

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

Table 3.0876.2   GPS week: 0876   Day: 2   MJD: 50378.0

               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   9   7   8   4   4   7   9    3 |    3  13   8  16   8   5  13  10    7
   2  |   5   5   6   6   2   4   8   6    3 |    3   7   9   8   8   4  12   6    5
   3  |   7   5  12   4   8   4   9  10    3 |   15  14  20  17  21  15  17  18   15
   4  |   7   8   7   8   6   6   9   9    3 |    8  12  16  11  11  10  14  13   10
   5  |   5   8  11   6   3   6  10   7    3 |    2  10   8  11   9   3  14   9    6
   6  |   4   5   8   5   6   4   7   7    2 |    3   9   7  11  11   4  13   8    6
   7  |   6   7   8  12   3   7  16   6    4 |    4   7   8  12   8   4  15   8    4
   9E |   8  11  15  13   4   9  11  11    5 |    4  10  14  14  11   5  18  11    8
  10  |   6   6   4   6   3 ---   8   8    3 |    4   9   6   6   8 ---   8   8    4
  14  |   5   7   5   5   5   4   9   8    3 |   15  16  14  11  18  14  19  14   14
  15  |   4   7   9   9   7   7   9   8    3 |    4  10   9  11  11   6  14   8    6
  16  |   5   6  10   7   4   7   5   7    3 |    5   6   7   8   8   6   8   9    5
  17  |   5   6   6   6   6   4   7  11    2 |    4  10   6  10  10   5  11  12    6
  18  |   6  11  12   5   8   4  11   5    4 |   10  15  17  15  13  15  17  18   12
  19E |  11  17  18   9  21  10  21  11    6 |   27  32  22  33  23  35  40  36   31
  21  |   5   5   5   3   3   5   7  12    2 |    3   5   7   5   7   8  12   6    5
  22  |   6   7   6   3   3   4  12  13    3 |    5   9   7   7   7   3  14  10    5
  23  |  10   9   8   4   5   6  14   9    4 |   11  10   7   6   9   8  12  10    6
  24  |   6   6   8   5   5   5   8   9    3 |    7  10   9  11  11   6  16   8    8
  25E |   9   9   7  12   3  10  16   7    5 |    7  15  12  20  14   8  20   9   11
  26  |   5   9   5   9   3   5  10   7    3 |    5   9   5  10   8   5  13  10    5
  27E |   7  16  17   7   6   8  17   8    5 |    4  14  18  12   8   9  17  12    8
  28  |   5   5   4   4   5   5  12  10    3 |    4   8   6   8   7   4  13   8    5
  29  |   4   6   7   4   5   4   9   7    2 |    3  10   5   8   8   4  15   9    5
  30  |   9  11  15  10   8 ---  14  11    6 |    8  15  14  16  14 ---  24  11   12
  31  |   5  10  12   6   3   5  11  12    4 |    3  12  14   9   7   5  11  10    5
------|--------------------------------------|--------------------------------------
 RMS  |   7   9  10   7   7   6  11   9      |T   8  12  11  13  11  10  16  12    9
 WRMS |   6   8   8   6   6   6  11   8      |NE  6  10  10  10  10   7  14  10    7
 MEDI |   6   7   8   6   5   5  10   9      |MD  4  10   9  11   9   6  14  10    6

Table 3.0876.3   GPS week: 0876   Day: 3   MJD: 50379.0

               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   9   6  16   6   6  12   9    4 |    5  12   8  18   8   5  13   6    6
   2  |   4   9   5   6   7   5  15   6    3 |    4   7   8   9   8   5  14   5    5
   3  |   6  11   6   5   5   5  10   8    3 |    8  17  10  12   8   7  17   9   10
   4  |   4   8   6   6   6   5  10   7    3 |    5   9  12   9   8   5  15   6    6
   5  |   6   8   7   7   7   7  13  11    3 |    3   7  12  12   8   4  18   9    6
   6  |   5   7   5  10   4   6   9   6    3 |    4   9   7  14   8   4  16   8    6
   7  |   7  12   8   8   7   4  10   5    4 |    4  12   7   9   7   3  11   4    5
   9E |   7  12  15  10   4   7  20   8    5 |    4  11  12  15   8   6  22   9    7
  10  |   8   4   7   6   7 ---  12  10    4 |    3   6   9   8   6 ---  17   7    5
  14  |  11   5   5   6   5   5  11   5    3 |   22  28  33  29  30  28  36  29   27
  15  |   5   9  10  11   9   5  14   8    4 |    5  12  13  14  11   4  17   7    7
  16  |   5   7   8   8   5   6  12   9    3 |    7   9  10  10   7   6  15   8    7
  17  |   4  10   7   6   6   4  15   7    3 |    4  14   8   8   9   5  15   8    5
  18  |   7   7   4   6   7   6  14   8    3 |   24  24  26  22  25  22  30  26   23
  19E |  15  24  15  30  14  17  30  15   10 |   27  36  27  48  37  25  49  25   33
  21  |   6  11   4   5   7   5   8   8    3 |    6  14  10   8   8   7  13   6    7
  22  |   6   6   7   7   5   6  11   7    3 |    5  10   9  11   7   4  13   6    6
  23  |  11  12   7   7   8   8  15   9    4 |   13  13   9   9  10   8  10  12    7
  24  |   5   7   6   3  12   6  13   6    3 |    9  10  12   9  13   8  17   9    9
  25E |   8   9   8   6   6   9  21   7    4 |    7  13  15  17  13   7  31  11   11
  26  |   5   8   6   7   4   3  14   6    3 |    5   9   8   9   8   4  17   7    6
  27E |   6  15   7  10   7   8  20   7    5 |    4  16   7  11  10   7  18   8    7
  28  |   6   8   6   7   3   3  12   8    3 |    4  10   8   9   7   4  13   4    5
  29  |   6   8   8   6   4   3  10   6    3 |    5   9  13   9   8   6  14   7    7
  30  |   9  12   9   5   8 ---  15   9    5 |    9  15  16  16  13 ---  27   9   13
  31  |   7  10  10   8   4   6  16   8    4 |    4   9  16  10   9   6  17  11    6
------|--------------------------------------|--------------------------------------
 RMS  |   7  10   8  10   7   7  15   8      |T  10  14  14  16  13  10  20  11   11
 WRMS |   6   9   7   7   6   7  15   7      |NE  9  13  13  13  11   9  18  11   10
 MEDI |   6   9   7   7   6   6  13   8      |MD  5  12  10  11   8   6  17   8    7

Table 3.0876.4   GPS week: 0876   Day: 4   MJD: 50380.0

               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   7   9   5   3   4  12   9    3 |    5  11   6  10   8   6  14   6    6
   2  |   6   7   4   5   6   6   8   8    3 |    3   9   7   9   8   7  11   5    6
   3  |   7  12   6   5   4   5  10   8    3 |    6  14   9  10  10   9  15   7    9
   4  |   9   8   5   6   6   6  14   8    3 |    5  10   6   8   9   5  14   5    5
   5  |   8   6   7   5   6   5   9   7    3 |    2  11  10  10   8   4  15   6    7
   6  |   8  11   9   5   5   7  13   7    4 |    3  11  11   9  11   4  17   9    7
   7  |   7   5   6   8   5   5  11   8    3 |    4  10   6  12   9   4  13   7    5
   9E |  10  12  16   9   5   8  15   9    5 |    4  12  16  13  11   5  19   7    9
  10  |   7   5   8   4   7 ---  10   5    3 |    3   7   7   7   9 ---  11   7    4
  14  |  16   9  16 ---  11  16  16  24    8 |   33  29  26 ---  25  41  29  43   28
  15  |   5  10   6   8   4   6  12   8    3 |   10  13  10  11  12   6  17   7    8
  16  |   5   8   9   5   5   7  10   7    3 |    5   8   9   7   6  10  10  10    5
  17  |   5   6   7   6   5   6  12   8    3 |    4   7   6   9  10   5  10   7    5
  18  |   5   6  11   4   5   3  12   6    3 |   19  21  21  18  18  20  17  17   18
  19E |   9  27  11 ---  24  14  38  12   10 |   27  38  23 ---  42  26  41  23   26
  21  |   5   7   5   5   5   6   7   7    3 |    4   7   7   8   8   8  12   7    6
  22  |   5   7   9   7   5   5  13   8    3 |    4   9   8  11   8   5  12   8    5
  23  |  11  17   9   5   5   7  17   7    5 |   10  13   8   7   7   7  12   7    5
  24  |   6   5   5   5   9   5  13   7    3 |    6   7   8   7   9   4  14   4    5
  25E |   9  11   7   9   5   9  16  11    4 |   10  12  11  18  13   7  20  10   12
  26  |   4   9   5   5   5   4  10   6    3 |    5  11   7  10  11   5  13   6    7
  27E |   7  10  10   5   8   6  15   8    4 |    4  12   9  13  10   7  16   9    8
  28  |   5   6   7   5   3   4  12   7    3 |    3   7   7   8   8   3  13   5    5
  29  |   8  10   8   6   6   4  11   8    3 |    7  11   8   6   7   4  11   9    4
  30  |  12  13  14   7  11 ---  15  11    6 |    6  17  16  17  17 ---  26   9   14
  31  |   6   7   9   7   3   7  11   9    3 |    4   9  10   9   7   5  14   5    5
------|--------------------------------------|--------------------------------------
 RMS  |   8  10   9   6   8   7  14   9      |T  10  14  11  10  13  12  17  12   10
 WRMS |   7   9   8   5   6   8  14   8      |NE  9  12  10  10  11  11  15  11    9
 MEDI |   7   8   8   5   5   6  12   8      |MD  5  11   9  10   9   6  14   7    6

Table 3.0876.5   GPS week: 0876   Day: 5   MJD: 50381.0

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

Table 3.0876.6   GPS week: 0876   Day: 6   MJD: 50382.0

               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  |   8  12   9   7   4   7   9   9    4 |    6  16   7  12   9   6  13  11    8
   2  |   6   8  11   7   5   6   9   6    3 |    4   8   6   9   8   6  10   4    6
   3  |   6   7  10   6   6   8  13   8    4 |    4   9   9   9  10   6  17   5    8
   4  |   7   8   5   6   5   5  10  12    3 |    4  13   9  12  10   5  14   7    9
   5  |   7  10  10   7   5   8  13   9    4 |    5   9  12  11  12   6  15   8    9
   6  |   6   6   7   7   4   6  10   9    3 |    3   8   9  10  10   5  15   5    7
   7  |  10   9  13   8   5   6  13  10    4 |    5  13   7  10  10   5  14   6    8
   9E |  12  17  13   7   9  11  18  17    6 |    7  14  22  18  21   9  29  10   16
  10  |   7   7   8   6   6 ---  23  15    5 |    3  10  11   8   8 ---  20  10    7
  14  |   7   7   5   6   4   7  11  16    3 |   17  17  21  12  14  18  18  17   15
  15  |   6  11   8   8  10   6  13   8    4 |    6  10   8  11  11   4  14   8    7
  16  |  11   9 ---  10  10  21  11  20    7 |   11  11 ---  15  13  30  16  20   12
  17  |   6   5   7   5   5   6   9  13    3 |    5   8   7  11  10   4  11   9    6
  18  |   6   8  10   7   7   5  10   8    3 |   14  20  14  16  17  16  20  19   17
  19E |  12  14  13  15  22  14  19  11    6 |   50  33  53  48  45  48  50  46   49
  21  |   7   6   7   8   4   5   9  16    3 |    6   7   9  11   9   7  10  10    6
  22  |   6   7   8   6   6   6  14   9    3 |    5  11   8  11  10   6  13   8    9
  23  |  10   9   8   9   4   9  14   9    4 |   12  10   9   8   8   8   9  10    6
  24  |   6   5  10   5   9   8  14  13    3 |    6   9   9  11  12   6  16   8    7
  25E |  14  19  11  12   6  11  28  10    7 |   14  21  28  31  22  14  31  20   23
  26  |   7   5  11   6  11   6  16   9    4 |    8   8   8   9  14   8  15  11    9
  27E |   7  19  11   6  10   7  14   8    5 |    6  13  17  13  15  10  16  10   11
  28  |   5   7   5   7   6   6  12   9    3 |    5   7   9   8  11   4  15   5    7
  29  |   5   5   6   6   6   5   9   8    3 |    7  10   8  10  12   6  12  10    9
  30  |  11  10  12   6  10 ---  22  13    6 |    9  14  16  18  19 ---  29  10   14
  31  |   7   7   7  10   6   8  12  13    4 |    5  10   9  11   9   5  11  10    7
------|--------------------------------------|--------------------------------------
 RMS  |   8  10   9   8   8   9  14  12      |T  12  13  16  15  15  14  19  14   14
 WRMS |   8   9   9   7   7   9  15  11      |NE  7  11  10  11  11  10  15  10    9
 MEDI |   7   8   9   7   6   7  13  10      |MD  6  10   9  11  11   6  15  10    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 4.0876   GPS week: 0876   MJD: 50376.0-50382.0

CENT| CLK EPO  |      BRUS      |      USUD      |      WILL      |
----|----------|----------------|----------------|----------------|
cod | cod 2489 |U  55   31   82 |U  39   32   88 |   35   20   62 |
emr | emr 2445 |   46   26   77 |   32   23   72 |U  29   14   50 |
esa | esa 1607 |   47   28   70 |U  32   23   72 |   34   17   49 |
gfz | gfz 1214 |   52   28   81 |U  28   21   61 |   31   13   59 |
igr | igr 2358 |   45   27   75 |   34   24   74 |   30   15   53 |
igs | igs 2496 |   47   26   74 |   30   23   71 |   29   14   52 |
jpl | jpl 2287 |U  48   27   76 |U  32   25   70 |   29   12   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 5.0876.0   GPS week: 0876   Day: 0   MJD: 50376.0

CENT| CLK EPO  |      BRUS      |      USUD      |      WILL      |
----|----------|----------------|----------------|----------------|
cod | cod 2494 |   47   27   77 |   37   31   79 |   35   24   64 |
emr | emr 2486 |   40   24   70 |   30   22   64 |   28   18   49 |
esa | esa 1749 |   42   26   72 |   31   25   57 |   35   18   55 |
gfz | gfz 1237 |   43   26   77 |   24   19   44 |   37   14   64 |
igr | igr 2495 |   40   24   69 |   25   21   60 |   31   18   51 |
igs | igs 2495 |   40   24   69 |   26   22   59 |   28   18   50 |
jpl | jpl 2287 |   45   23   65 |   28   24   60 |   28   12   33 |

Table 5.0876.1   GPS week: 0876   Day: 1   MJD: 50377.0

CENT| CLK EPO  |      BRUS      |      USUD      |      WILL      |
----|----------|----------------|----------------|----------------|
cod | cod 2495 |    0    0    0 |   26   31   65 |   38   20   63 |
emr | emr 2494 |    0    0    0 |   24   22   59 |   31   14   49 |
esa | esa 1739 |    0    0    0 |   28   21   59 |   33   19   45 |
gfz | gfz 1233 |    0    0    0 |   21   20   60 |   35   16   46 |
igr | igr 2495 |    0    0    0 |   24   22   56 |   31   15   52 |
igs | igs 2496 |    0    0    0 |   19   21   52 |   31   14   49 |
jpl | jpl 2288 |    0    0    0 |   26   23   47 |   27   12   42 |

Table 5.0876.2   GPS week: 0876   Day: 2   MJD: 50378.0

CENT| CLK EPO  |      BRUS      |      USUD      |      WILL      |
----|----------|----------------|----------------|----------------|
cod | cod 2495 |   62   30   87 |   49   35  138 |   32   16   61 |
emr | emr 2388 |   55   26   82 |   40   27  114 |   24   12   43 |
esa | esa 1746 |   52   25   77 |   41   28  112 |   25   13   45 |
gfz | gfz 1207 |   62   25   72 |   26   24   71 |   27   13   48 |
igr | igr 2494 |   52   27   79 |   40   28  117 |   25   11   44 |
igs | igs 2496 |   53   26   78 |   41   27  118 |   24   10   45 |
jpl | jpl 2288 |   56   27   83 |   40   27  117 |   28   11   46 |

Table 5.0876.3   GPS week: 0876   Day: 3   MJD: 50379.0

CENT| CLK EPO  |      BRUS      |      USUD      |      WILL      |
----|----------|----------------|----------------|----------------|
cod | cod 2490 |   53   38   75 |   33   28   75 |   33   18   65 |
emr | emr 2479 |   43   33   66 |   25   21   59 |   26   11   55 |
esa | esa 1469 |   52   37   65 |   30   23   56 |   47   18   53 |
gfz | gfz 1231 |   45   39   74 |   23   22   57 |   26   13   67 |
igr | igr 2476 |   40   36   67 |   23   22   59 |   26   12   56 |
igs | igs 2496 |   43   33   66 |   23   20   56 |   26   11   56 |
jpl | jpl 2288 |   42   34   67 |   22   24   56 |   28   11   44 |

Table 5.0876.4   GPS week: 0876   Day: 4   MJD: 50380.0

CENT| CLK EPO  |      BRUS      |      USUD      |      WILL      |
----|----------|----------------|----------------|----------------|
cod | cod 2494 |   50   25   74 |   38   27   81 |   36   18   57 |
emr | emr 2486 |   40   21   61 |   31   22   71 |   33   12   53 |
esa | esa 1479 |   52   27   64 |   26   17   60 |   32   19   49 |
gfz | gfz 1144 |   40   21   70 |   28   21   69 |   33   12   61 |
igr | igr 2494 |   41   21   61 |   28   24   73 |   32   13   55 |
igs | igs 2496 |   42   21   62 |   27   22   66 |   32   12   52 |
jpl | jpl 2287 |   43   22   63 |   28   27   68 |   31   13   45 |

Table 5.0876.5   GPS week: 0876   Day: 5   MJD: 50381.0

CENT| CLK EPO  |      BRUS      |      USUD      |      WILL      |
----|----------|----------------|----------------|----------------|
cod | cod 2492 |   64   28   92 |   48   36   82 |   38   24   63 |
emr | emr 2488 |   57   22   91 |   40   26   62 |   32   14   54 |
esa | esa 1375 |   43   25   63 |   25   22   70 |   35   15   49 |
gfz | gfz 1240 |   78   22  107 |   30   25   56 |   26   11   53 |
igr | igr 1955 |   59   25   88 |   44   28   61 |   37   19   57 |
igs | igs 2496 |   60   23   88 |   38   26   62 |   30   16   54 |
jpl | jpl 2287 |   62   25   90 |   39   28   60 |   26   12   44 |

Table 5.0876.6   GPS week: 0876   Day: 6   MJD: 50382.0

CENT| CLK EPO  |      BRUS      |      USUD      |      WILL      |
----|----------|----------------|----------------|----------------|
cod | cod 2464 |   51   34   85 |   39   31   75 |   36   20   62 |
emr | emr 2296 |   38   28   89 |   33   19   56 |   27   17   48 |
esa | esa 1689 |   40   28   80 |   39   25   68 |   30   16   46 |
gfz | gfz 1209 |   33   32   83 |   41   18   63 |   32   12   67 |
igr | igr 2094 |   34   28   84 |   45   21   69 |   28   16   56 |
igs | igs 2496 |   39   28   80 |   33   21   59 |   28   12   54 |
jpl | jpl 2282 |   37   28   82 |   34   19   59 |   33   15   52 |

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