Subject: [IGSREPORT-3141] Wk 0877 IGS Final Orbits
From: AC Coordinator / NRCan GSDivision
Date: Sun, 10 Nov 1996 7:51:36 PST

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IGS Electronic Report    Sun Nov 10  7:51:36 PST 1996      Message Number 3141
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Author: AC Coordinator / NRCan GSDivision
Subject: Wk 0877 IGS Final Orbits

Final IGS Orbit Combination - Week 0877   (Oct 27, 1996 - Nov 02, 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 (IGS08777.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:

 IGS08770-6.SP3  IGS GPS ephemeris files for days 0-6, week 0877 in SP3 format.
 IGS08777.ERP    Earth rotation parameters (ERP) associated with ephemerides.
 IGS08777.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. The following orbit solutions were excluded from the combination because 
   they were biasing the weighted average (generally indicated by long arc RMS).
   They were still used for statistics computation.

                  Day | Centre | PRN list
                 -----+--------+-------------------------
                 1,3-5|  NGS   |  ALL (High X-Rotations)

7. 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 30) | 00:00:00 |  19   |   ALL    | Modeling problems
          4 (Oct 31) | 00:00:00 |  14   |   ALL    | Modeling problems

ORBIT COMBINATION AND EVALUATION STATISTICS:

For a complete description of tables and statistics, please refer to the report
posted on CDDIS (IGS08777.SUM).

Table 1: Week 0877 summary.                       (Oct 27, 1996 - Nov 02, 1996)

Table 1.0877.a   GPS week: 0877   MJD: 50383.0-50389.0

         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  80 | .00  .02  .00  -.43  -.01   .29   .0  .06  .06 |    -.7   -3.1    1.3
        | .00  .00  .01   .09   .10   .18   .1           |    6.1   14.0
emr  29 |-.01 -.01 -.01   .45  -.17   .37  -.2  .09  .09 |  217.2   28.4     .6
        | .01  .00  .01   .08   .10   .22   .1           |   52.6   10.4
esa  56 | .00 -.01  .00   .04   .11   .21   .2  .10  .08 |   -6.5   13.6    1.1
        | .01  .01  .00   .11   .11   .14   .1           |   14.9   12.1
gfz  48 | .00 -.03 -.01   .24   .00  -.33  -.3  .09  .08 |  218.7   28.6     .5
        | .00  .01  .01   .07   .08   .06   .1           |   52.5   10.3
igr  n/a| .01 -.01  .00   .09   .06  -.03  -.1  .06  .06 |     .3     .7     .5
        | .00  .01  .01   .19   .15   .17   .1           |    3.3    3.9
jpl  37 | .00  .01  .00  -.10  -.01   .07   .2  .05  .05 |  218.6   28.3     .5
        | .01  .00  .00   .11   .03   .10   .0           |   52.6   10.3
ngs  49 | .00 -.05 -.02   .96   .26  -.25  -.1  .16  .16 |   -3.3    5.3   79.5
        | .01  .01  .01   .30   .29   .22   .1           |    2.2    6.3
sio  110|-.01  .01  .02  -.12   .02  -.54   .1  .07  .07 |     .0     .0     .0
        | .00  .01  .00   .08   .03   .26   .1           |     .0     .0

Table 1.0877.b   GPS week : 0877   MJD: 50383.0-50389.0

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

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 2.0877.0   GPS week: 0877   Day: 0   MJD: 50383.0

CENT STA|  DX   DY   DZ    RX    RY    RZ  SCL  RMS WRMS |   TOFT  TDRFT    RMS
--------|------------------------------------------------|---------------------
cod  81 | .00  .02 -.01  -.46  -.10   .32   .0  .07  .06 |   -3.9    -.6    1.5
emr  29 |-.01 -.01 -.01   .36  -.25   .44  -.2  .09  .09 |  138.6   41.0     .6
esa  55 |-.01  .00  .00  -.15   .27   .10   .2  .13  .09 |  -27.7   30.2    1.1
gfz  49 | .00 -.03 -.01   .31   .09  -.41  -.3  .07  .07 |  140.1   41.1     .5
igr  n/a| .01 -.01  .01   .11   .12  -.04  -.1  .06  .05 |   -1.0    2.7     .6
jpl  37 | .01  .02  .00  -.24  -.06   .13   .2  .06  .06 |  140.0   40.9     .6
ngs  49 |-.01 -.06 -.02   .62   .13   .01  -.2  .15  .15 |   -1.5   -1.7   79.5
sio  113|-.01  .02  .02  -.10  -.02  -.44   .2  .08  .08 |     .0     .0     .0

Table 2.0877.1   GPS week: 0877   Day: 1   MJD: 50384.0

CENT STA|  DX   DY   DZ    RX    RY    RZ  SCL  RMS WRMS |   TOFT  TDRFT    RMS
--------|------------------------------------------------|---------------------
cod  80 | .00  .02 -.01  -.45  -.08   .37  -.1  .05  .05 |     .5    7.9    1.4
emr  30 | .00 -.01 -.02   .53  -.03   .46  -.2  .09  .09 |  175.9   30.2     .6
esa  56 | .00 -.02 -.01   .12   .21   .20   .1  .11  .09 |  -11.5   16.3    1.1
gfz  47 |-.01 -.03  .00   .30   .01  -.27  -.3  .09  .08 |  177.7   30.0     .5
igr  n/a| .01 -.01  .00  -.08   .08   .23  -.1  .06  .05 |    -.8    1.4     .6
jpl  37 | .01  .01  .00  -.04   .04   .26   .2  .05  .05 |  177.5   29.9     .5
ngs  50 | .00 -.07 -.03  1.26   .25  -.11  -.1  .17  .17 |    -.3    6.2   78.0
sio  107|-.01  .01  .02  -.09   .02  -.94   .0  .06  .06 |     .0     .0     .0

Table 2.0877.2   GPS week: 0877   Day: 2   MJD: 50385.0

CENT STA|  DX   DY   DZ    RX    RY    RZ  SCL  RMS WRMS |   TOFT  TDRFT    RMS
--------|------------------------------------------------|---------------------
cod  80 | .00  .02  .00  -.59  -.03   .09   .0  .06  .06 |   -3.5     .7    1.3
emr  31 |-.01  .00  .00   .42  -.12   .32   .0  .09  .08 |  193.3   27.4     .6
esa  57 | .01 -.01  .00   .19   .17   .09   .2  .10  .08 |  -15.8    8.3    1.0
gfz  49 | .00 -.03 -.01   .16  -.16  -.28  -.4  .08  .07 |  194.8   27.8     .5
igr  n/a| .02 -.01 -.01   .28   .32  -.15   .0  .06  .06 |   -1.3    1.3     .5
jpl  37 | .00  .01  .00  -.12   .02   .04   .2  .05  .05 |  194.6   27.3     .5
ngs  49 | .01 -.05 -.01   .71   .37  -.20   .1  .15  .15 |   -5.6    7.7   79.8
sio  113|-.01  .02  .02  -.23  -.02  -.16   .1  .07  .07 |     .0     .0     .0

Table 2.0877.3   GPS week: 0877   Day: 3   MJD: 50386.0

CENT STA|  DX   DY   DZ    RX    RY    RZ  SCL  RMS WRMS |   TOFT  TDRFT    RMS
--------|------------------------------------------------|---------------------
cod  80 | .01  .02  .00  -.36   .02  -.01  -.2  .07  .05 |   -2.5   13.8    1.3
emr  29 | .00 -.01 -.01   .38  -.07   .80  -.2  .09  .08 |  219.1   40.5     .6
esa  57 | .00  .00  .00  -.01   .11   .26   .3  .11  .08 |   19.5   17.8     .7
gfz  46 | .00 -.04  .00   .27  -.04  -.40  -.3  .10  .08 |  220.5   40.8     .5
igr  n/a| .01 -.02  .00   .18   .10   .17  -.3  .07  .06 |   -1.7    5.8     .5
jpl  37 | .00  .01  .00   .01  -.03   .06   .3  .05  .05 |  220.5   40.3     .5
ngs  51 | .03 -.07 -.02  1.34   .34  -.18  -.2  .17  .17 |   -3.9   16.0   80.1
sio  111|-.01  .01  .02  -.10   .02  -.55   .2  .06  .06 |     .0     .0     .0

Table 2.0877.4   GPS week: 0877   Day: 4   MJD: 50387.0

CENT STA|  DX   DY   DZ    RX    RY    RZ  SCL  RMS WRMS |   TOFT  TDRFT    RMS
--------|------------------------------------------------|---------------------
cod  81 | .01  .01  .00  -.44   .19   .37   .0  .07  .06 |   -2.9   -9.0    1.3
emr  30 |-.02 -.01 -.01   .57  -.31   .23  -.2  .10  .09 |  242.6   16.7     .6
esa  57 | .01 -.01  .00   .09   .05   .48   .1  .10  .08 |   -4.6   22.3    1.3
gfz  50 | .00 -.04 -.02   .16   .01  -.39  -.2  .10  .09 |  244.0   16.9     .6
igr  n/a| .01 -.02  .00   .34   .06  -.06   .2  .08  .07 |    1.3   -3.4     .6
jpl  37 | .00  .01  .00   .05   .00   .04   .3  .04  .05 |  243.8   16.8     .6
ngs  50 |-.01 -.04 -.01  1.13  -.27  -.25   .0  .16  .16 |   -4.9   -2.1   78.8
sio  111|-.01  .01  .02  -.23   .04  -.59   .1  .08  .08 |     .0     .0     .0

Table 2.0877.5   GPS week: 0877   Day: 5   MJD: 50388.0

CENT STA|  DX   DY   DZ    RX    RY    RZ  SCL  RMS WRMS |   TOFT  TDRFT    RMS
--------|------------------------------------------------|---------------------
cod  80 | .00  .01  .01  -.31   .03   .48   .1  .05  .05 |   -4.8   -4.5    1.3
emr  26 |-.02  .00  .00   .48  -.21   .15  -.2  .10  .10 |  257.5   28.6     .4
esa  56 | .00 -.02 -.01   .09   .09   .24   .3  .07  .07 |    2.7    7.5     .8
gfz  47 |-.01 -.04 -.01   .31   .06  -.30  -.3  .10  .09 |  258.8   29.1     .4
igr  n/a| .01 -.02  .00  -.02  -.16  -.16   .0  .06  .05 |   -1.6    2.5     .5
jpl  37 | .00  .02 -.01  -.11  -.04   .02   .1  .04  .04 |  258.8   28.6     .4
ngs  48 | .00 -.05 -.01   .99   .29  -.71  -.2  .17  .17 |   -5.6    8.4   78.1
sio  108| .00  .01  .02   .00   .02  -.75   .0  .06  .06 |     .0     .0     .0

Table 2.0877.6   GPS week: 0877   Day: 6   MJD: 50389.0

CENT STA|  DX   DY   DZ    RX    RY    RZ  SCL  RMS WRMS |   TOFT  TDRFT    RMS
--------|------------------------------------------------|---------------------
cod  79 | .01  .02  .01  -.40  -.07   .38   .0  .06  .05 |   12.6  -29.8    1.1
emr  28 |-.01  .00 -.01   .40  -.21   .23  -.2  .08  .07 |  293.8   14.3     .5
esa  57 | .00  .00  .00  -.04  -.08   .10   .3  .08  .06 |   -8.2   -7.1    1.3
gfz  46 | .00 -.03 -.01   .19   .04  -.28  -.4  .08  .07 |  295.3   14.6     .4
igr  n/a| .00  .00 -.01  -.18  -.07  -.18  -.2  .06  .05 |    7.5   -5.5     .5
jpl  37 | .00  .01  .00  -.21   .01  -.06   .3  .05  .05 |  295.3   14.3     .4
ngs  49 | .01 -.04 -.01   .64   .68  -.28  -.1  .14  .14 |   -1.5    2.5   82.0
sio  106|-.01  .01  .02  -.12   .06  -.34   .2  .07  .06 |     .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 3.0877.0   GPS week: 0877   Day: 0   MJD: 50383.0

               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   7   4   6   4  12   8    3 |    6  10  15   8   9   5  15   8    7
   2  |   7   6   6   9   5   6  12   9    3 |    3   6  15   9   9   3  11   8    5
   3  |   8   7  13   5   3   5  10   6    3 |    5   9  18   6   9   5  15   5    7
   4  |   5   9   8   6   7   7  15  10    3 |    5  10  17   9  11   7  19   7    7
   5  |   8  11  12   8   4   7  13   6    4 |    4  10  24  10  10   5  14   7    6
   6  |   4   7   6   7   4   6   9   6    3 |    3   7  19   9  10   6  16   7    7
   7  |   7   6   5   7   4   7  17   8    3 |    4   7  17   9  10   5  13   9    6
   9E |   9  14  17   8   4   7  23   9    5 |    9  16  28  16  15  10  21  11   12
  10  |   4   6   7   5   2 ---  10   7    3 |    3   8  16   7   6 ---  14   7    5
  14  |   5   7   6   5   4   4   8  12    3 |    6   7  10   5   7   4   9   9    5
  15  |   5  11  12   8   5   7  20   7    4 |    3  11  19  11  11   5  18   9    7
  16  |   6  12  36   6   8   6  14   9    6 |    5   9  31   7   9   6  11   7    5
  17  |   6   6   9   6   5   5  13   9    3 |    5   8  17  10  10   7  14  11    6
  18  |   7   6  24   7   3   5  10   9    4 |    7  13  13  14  10   8  19  15   10
  19E |  14  14  21  12  12   9  16   9    5 |    9  24  19  21  18   9  25  12   13
  21  |   3   5   7   7   4   5   9  10    3 |    5   7  16   9   9   6  17   9    6
  22  |   7   8  10   5   4   5  19   6    3 |    5   9  16   9   8   7  22   8    7
  23  |   7   6   4   9   6   5  12   6    3 |   13   7  14   6   9   8  12  10    8
  24  |   5   8   9   8   7   5  18   9    3 |    6   9  19  12  13   7  20   8    8
  25E |  12   9  10  10   8   9  26   7    5 |   14  21  29  25  24  13  34  19   19
  26  |   6   6   8   8   6   3  18   6    3 |    7   8  16   7  12   6  24  10    8
  27E |   9  15  16   7   8   8  13   9    4 |   12  14  22  14  15  12  22  11   12
  28  |   6   9  12   5   3   6  15   7    3 |    4   8  19   7   9   4  18   5    6
  29  |   7   5   7   5   4   4   9  12    3 |    6  10  16   9  12   5  12  14    8
  30  |   8  10  10   8   7 ---  17  10    4 |    9  14  22  18  18 ---  25  10   13
  31  |   9   6  13   8   8   4  12   7    3 |    4   7  19   6  10   4  16   6    7
------|--------------------------------------|--------------------------------------
 RMS  |   7   9  13   7   6   6  15   8      |T   6  11  19  11  11   6  18   9    8
 WRMS |   6   9   9   7   5   6  15   8      |NE  5   9  18   9  10   5  16   8    7
 MEDI |   7   8  10   7   5   6  13   9      |MD  5   9  18   9  10   6  17   9    7

Table 3.0877.1   GPS week: 0877   Day: 1   MJD: 50384.0

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

Table 3.0877.2   GPS week: 0877   Day: 2   MJD: 50385.0

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

Table 3.0877.3   GPS week: 0877   Day: 3   MJD: 50386.0

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

Table 3.0877.4   GPS week: 0877   Day: 4   MJD: 50387.0

               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   8  12   5   4  13   6    3 |    5  13   7  15   9   4  12   9    7
   2  |   4   9   5   9   6   3  10   4    3 |    4   8   7   9   7   5  11   7    5
   3  |   8  12  17   8  16   4  13   7    4 |   22  24  17  18  24  21  29  23   19
   4  |   6  21   8   7   7   4  21   5    4 |    6  22  13   9   8   6  17   8    6
   5  |   3  10   9  11   4   4  19   7    3 |    3   8  10  10   8   6  15   5    4
   6  |   4  14  10   9   5   5   9   5    4 |    4  16   7  11  10   4  13   5    5
   7  |   5   7   6   9   4   4   8   4    3 |    4   7   8  10   7   5  11   6    5
   9E |   6   7  10  12   8   6  28   9    4 |    6  11  15  17  12   8  27   8    9
  10  |   8   7   6   6   7 ---  12  16    5 |    3   8   7   7   9 ---   9  21    7
  14  |  18   9  12   8   5   7  11   9    5 |    9   5  15   5   6   6   8   6    5
  15  |   8   8   7   7   6   5  10   9    3 |    6   9  11  10   9   4  14   7    4
  16  |   2   8   6   6   6   3  12  10    3 |    3   6   9   6   5   6   8   7    4
  17  |   4   7   7  15   7   5  10   9    3 |    4  12   9  17   9   4  10   8    5
  18  |   4   9   8   6   8   4  11   7    3 |   10  14  10  10  12   7  14  12    9
  19E |  11  12  21   8   7   3  18   7    5 |   55  50  39  54  53  50  58  51   49
  21  |   6   7   8   9   5   5  12   6    3 |    3   7   8   8   9   7  13   4    4
  22  |   4   9   6   7   5   4  16   5    2 |    3  10   8   9   8   4  19   5    5
  23  |   9  10   6   9   5   5  14   6    3 |   10   8   7   8   7   6  12   9    7
  24  |   4   9  11   8  11   6  21  16    4 |    9  15  16  12  10  10  18  16   10
  25E |   7  10  12  20  14   5  32   8    4 |   10  12  13  21  13   8  25  11    9
  26  |   3   8   7   8   5   3  11   4    2 |    6   9   6   9   8   3  10   7    5
  27E |   6   7  12   9   8   5  14   4    3 |   11  13  18  14  12   8  20  10   10
  28  |   5   6   8   9   6   3  13   7    3 |    4   8  10   9   9   5  13   5    5
  29  |   7   5   6   9   3   3   6   6    3 |    7  10   7  11   8   5  10   7    6
  30  |   5  14  10   9   8 ---  19   9    5 |    8  15  12  17  15 ---  21   6    8
  31  |   5   6   6  11   9   5  13   4    3 |    4   7   9   8  11   5  15   4    4
------|--------------------------------------|--------------------------------------
 RMS  |   7  10  10  10   8   4  16   8      |T  13  15  13  15  14  12  19  13   12
 WRMS |   6   9   8   9   7   5  16   8      |NE  7  11  10  10  10   7  14   9    7
 MEDI |   6   9   8   9   6   4  13   7      |MD  6  10  10  10   9   6  14   7    6

Table 3.0877.5   GPS week: 0877   Day: 5   MJD: 50388.0

               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   8   9   6   4  12   6    3 |    4   9   7   8   9   4  11   6    5
   2  |   4   9   6  11   4   4  11   7    3 |    3  10   6  11   7   3  11   5    4
   3  |   4   8   6   6   6   5  11   5    2 |   17  16  13  18  21  18  25  20   16
   4E |   3  12   8   8   5   5  13   7    3 |    5  11   9   9   9   9  16  10    6
   5  |   4  11   7  10   4   4  10   5    3 |    4   8   8  11   7   5  13   6    5
   6  |   3  10   5   7   3   3   7   6    2 |    3   9   9   9   7   4  10   7    4
   7  |   5   6   7  10   4   6  14   4    3 |    3   6  10   8   8   7  14   5    4
   9E |   4  10   9  15  10   6  26   6    4 |    7  13  15  18  12   7  24   8    8
  10  |   4   6   5   5   8 ---  13   6    3 |    4   7   8   8  10 ---  16   7    5
  14  |   3   8   4   6   5   3  11   9    2 |    8   6   7   5   7   3   8   5    5
  15  |   7  11   8  10   9   5  13   6    3 |    5  12   8  12   9   4  14   6    4
  16  |   5   7   5   6   7   3  14   7    2 |    4   6   9   5   8   5  12   5    3
  17  |   3   9   7   8   4   6   8   6    3 |    3  10   8  10   8   7  12   7    4
  18  |   4  11   7   6   6   3  14   6    3 |   17  24  19  21  21  18  30  22   19
  19E |  13  19  13  10   4   5  16   7    5 |   54  58  46  55  54  57  61  56   55
  21  |   6   5   4  10   4   3   9   6    3 |    3   7   9   6   6   5   9   6    4
  22  |   3   8   6   7   3   4  16   5    2 |    3   8   8   9   6   4  17   7    4
  23  |   7  15   6  12   6   6  15   6    4 |    7   7   7   8   9   4   7   7    5
  24E |   5   8   7   8   5   4  21   5    3 |    7  12  11  12  11   8  17   8    8
  25E |   4   8  11  19   8   5  49   6    4 |    8  13  11  23  14   9  39  13    9
  26  |   4   6   5  10   4   3  12   4    2 |    4   7   5   7   7   4  10   7    4
  27E |   6  12  11  11   7   5  14   6    4 |   16  20  15  18  18  15  19  14   16
  28  |   3  14   7   7   3   5  12   5    3 |    4  13  10   9   8   4  13   4    5
  29  |   4   8   6   7   4   2   9   5    2 |    4   7   6   8   7   4   9   5    4
  30  |   5  15   9  10   5 ---  17   7    4 |    6  17  11  16  11 ---  20   8    8
  31  |   7   8   9   9   8   4  13   4    3 |    3   8  12   7  10   5  13   7    4
------|--------------------------------------|--------------------------------------
 RMS  |   5  10   7  10   6   4  17   6      |T  12  16  13  16  15  14  20  14   13
 WRMS |   5  10   7   9   5   4  17   6      |NE  6  10   9  10  10   7  14   8    7
 MEDI |   4   9   7   9   5   4  13   6      |MD  4  10   9   9   9   5  14   7    5

Table 3.0877.6   GPS week: 0877   Day: 6   MJD: 50389.0

               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   8   6   7   3   5  13   5    3 |    5   8   8   9   9   5  11   6    7
   2  |   6   8   6   7   4   4  10   4    3 |    4  10   8  10   7   5  12   6    6
   3  |   4   6   7   6   6   5   8   6    2 |   14  16  18  12  18  14  13  15   14
   4E |   7  13   6   7   4   4  19  11    4 |    9  11  12  12   9  10  19   7    8
   5  |   6   9   7   9   6   6  13   7    3 |    4  10  11  10   7   5  11   5    5
   6  |   4   6   6   6   5   4  10   5    2 |    4   8   9   8   7   4  12   3    5
   7  |   5   8   4   7   6   4  17   3    3 |    4   9   8   9   6   4  16   4    5
   9E |   8   8   9  13  12   6  28   9    5 |    9  14  14  22  16   8  30   8   11
  10  |   4   6   4   4   3 ---   6   5    2 |    4   8   9   7   7 ---  10   6    5
  14  |   3   3   6   6   3   3   9   9    2 |    5   6   9   6   6   5   8   6    5
  15  |   5   8   7   7   5   6  13   5    3 |    5  10  13  10   8   5  15   4    6
  16  |   4   8   5   8   4   3  13   8    3 |    4   9  11   9   6   6  10   6    4
  17  |   4   5   7   9   3   4   9   7    3 |    5   8  12  11   7   4  12   7    5
  18  |   4   5  14   5   7   4   8   5    3 |   14  16  20  16  16  16  19  15   15
  19E |   9  11  13   6  13   5  12   7    4 |   42  35  46  42  38  40  41  39   40
  21  |   5   5   4   7   6   3   7  11    3 |    3   6  10   8   9   5  11   8    5
  22  |   5   6   4   7   5   4  19   6    3 |    3   9   8  12   9   5  22   6    6
  23  |   8  12  11   6   9   7  13   7    4 |   12   8  10   8  10   7   8   8    8
  24E |   7   9   7  11   5   5  16   6    3 |   11  12  17  16  11  12  18  13   11
  25E |   5   9   9  15   5   6  27  10    4 |   16  18  19  23  19  14  27  18   17
  26  |   5   6   4   9   3   4   6   4    2 |    5   7   7   6   7   5   7   7    5
  27E |   8   8  10  11   9   5  15   8    4 |   15  18  13  21  18  14  19  17   16
  28  |   5   5   7   6   3   4  13   6    3 |    4   6  10   8   7   5  15   4    5
  29  |   3   4   6   5   3   3   6   6    2 |    6   7   8   9   7   5   9   8    6
  30  |   7  12  12   9   6 ---  18   8    5 |    9  15  14  19  15 ---  24   8   11
  31  |   5   5   5   7   6   5  13   6    2 |    4   7  12   7   9   4  14   5    5
------|--------------------------------------|--------------------------------------
 RMS  |   6   8   8   8   6   5  14   7      |T  11  12  14  14  12  11  17  11   11
 WRMS |   5   7   6   7   5   5  14   6      |NE  6   9  11  10   9   6  13   7    7
 MEDI |   5   8   7   7   5   4  13   6      |MD  5   9  11  10   9   5  14   7    6

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 4.0877   GPS week: 0877   MJD: 50383.0-50389.0

CENT| CLK EPO  |      BRUS      |      USUD      |      WILL      |
----|----------|----------------|----------------|----------------|
cod | cod 2494 |U  48   33   86 |U  35   32   89 |   35   21   64 |
emr | emr 2416 |   38   27   80 |   27   25   75 |U  31   15   60 |
esa | esa 1941 |   41   27   77 |U  35   24   79 |   35   17   56 |
gfz | gfz 1231 |   45   27   88 |U  26   22   69 |   30   15   61 |
igr | igr 2486 |   40   27   77 |   27   25   76 |   31   14   58 |
igs | igs 2496 |   40   27   77 |   26   25   75 |   31   15   57 |
jpl | jpl 2287 |U  42   27   75 |U  27   25   77 |   28   14   49 |

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 5.0877.0   GPS week: 0877   Day: 0   MJD: 50383.0

CENT| CLK EPO  |      BRUS      |      USUD      |      WILL      |
----|----------|----------------|----------------|----------------|
cod | cod 2488 |   53   35   94 |   31   26   78 |   37   21   61 |
emr | emr 2395 |   47   30   89 |   22   18   52 |   33   15   56 |
esa | esa 1899 |   46   28   86 |   26   20   68 |   39   19   56 |
gfz | gfz 1234 |   54   34  102 |   22   17   69 |   36   17   51 |
igr | igr 2494 |   47   28   88 |   22   19   67 |   33   16   55 |
igs | igs 2496 |   47   30   86 |   22   18   63 |   33   17   53 |
jpl | jpl 2288 |   47   28   82 |   25   19   50 |   35   17   50 |

Table 5.0877.1   GPS week: 0877   Day: 1   MJD: 50384.0

CENT| CLK EPO  |      BRUS      |      USUD      |      WILL      |
----|----------|----------------|----------------|----------------|
cod | cod 2496 |   46   31   74 |   28   30   65 |   34   21   63 |
emr | emr 2389 |   34   24   67 |   22   20   55 |   32   17   59 |
esa | esa 2075 |   41   23   65 |   33   23   63 |   35   19   49 |
gfz | gfz 1234 |   45   24   73 |   20   20   64 |   33   19   54 |
igr | igr 2496 |   38   23   62 |   25   19   53 |   31   16   56 |
igs | igs 2496 |   37   24   62 |   24   19   52 |   30   16   53 |
jpl | jpl 2288 |   40   24   66 |   23   20   56 |   26   17   44 |

Table 5.0877.2   GPS week: 0877   Day: 2   MJD: 50385.0

CENT| CLK EPO  |      BRUS      |      USUD      |      WILL      |
----|----------|----------------|----------------|----------------|
cod | cod 2496 |   48   31   88 |   36   28  104 |   30   22   61 |
emr | emr 2488 |   37   25   80 |   27   23   83 |   28   14   56 |
esa | esa 1818 |   42   23   76 |   40   28   90 |   34   17   59 |
gfz | gfz 1237 |   42   26   95 |   28   28  106 |   26   14   48 |
igr | igr 2483 |   38   26   79 |   28   24   84 |   27   13   55 |
igs | igs 2496 |   39   26   79 |   28   24   86 |   26   14   55 |
jpl | jpl 2288 |   39   27   72 |   28   24   90 |   25   13   52 |

Table 5.0877.3   GPS week: 0877   Day: 3   MJD: 50386.0

CENT| CLK EPO  |      BRUS      |      USUD      |      WILL      |
----|----------|----------------|----------------|----------------|
cod | cod 2496 |   52   38  101 |   35   24   66 |   31   17   70 |
emr | emr 2383 |   44   33   98 |   25   20   47 |   31   12   69 |
esa | esa 1989 |   49   31   91 |   31   20   53 |   35   14   65 |
gfz | gfz 1229 |   57   26  106 |   25   17   45 |   34   15   82 |
igr | igr 2490 |   48   32   95 |   24   19   50 |   30   11   66 |
igs | igs 2496 |   46   32   96 |   25   17   48 |   28   12   65 |
jpl | jpl 2288 |   52   28   84 |   25   18   49 |   27   12   45 |

Table 5.0877.4   GPS week: 0877   Day: 4   MJD: 50387.0

CENT| CLK EPO  |      BRUS      |      USUD      |      WILL      |
----|----------|----------------|----------------|----------------|
cod | cod 2496 |    0    0    0 |   41   28   87 |   40   23   66 |
emr | emr 2393 |    0    0    0 |   27   26   75 |   36   18   56 |
esa | esa 1989 |    0    0    0 |   28   27   74 |   39   18   55 |
gfz | gfz 1228 |    0    0    0 |   26   28   71 |   18   14   48 |
igr | igr 2483 |    0    0    0 |   24   27   71 |   36   16   57 |
igs | igs 2496 |    0    0    0 |   26   24   70 |   35   17   56 |
jpl | jpl 2287 |    0    0    0 |   28   26   78 |   21   13   39 |

Table 5.0877.5   GPS week: 0877   Day: 5   MJD: 50388.0

CENT| CLK EPO  |      BRUS      |      USUD      |      WILL      |
----|----------|----------------|----------------|----------------|
cod | cod 2492 |   45   31   83 |   30   32   75 |   40   21   66 |
emr | emr 2373 |   27   25   77 |   27   23   66 |   32   15   60 |
esa | esa 2054 |   27   27   70 |   30   21   66 |   34   16   63 |
gfz | gfz 1228 |   28   28   78 |   23   23   60 |   30   15   70 |
igr | igr 2462 |   28   26   73 |   26   24   67 |   33   15   62 |
igs | igs 2496 |   28   26   73 |   24   23   64 |   33   15   61 |
jpl | jpl 2288 |   32   28   79 |   27   23   65 |   27   13   53 |

Table 5.0877.6   GPS week: 0877   Day: 6   MJD: 50389.0

CENT| CLK EPO  |      BRUS      |      USUD      |      WILL      |
----|----------|----------------|----------------|----------------|
cod | cod 2493 |   43   31   73 |   38   46  131 |   32   19   63 |
emr | emr 2493 |   38   24   65 |   36   38  119 |   27   10   57 |
esa | esa 1763 |   36   27   68 |   48   27  119 |   27   14   44 |
gfz | gfz 1227 |   33   23   64 |   36   18   55 |   32   11   67 |
igr | igr 2493 |   37   25   62 |   36   39  118 |   27   10   54 |
igs | igs 2496 |   37   25   63 |   34   40  118 |   27   10   55 |
jpl | jpl 2284 |   36   26   63 |   32   38  121 |   30   12   60 |

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