Subject: [IGSREPORT-2890] Wk 0864 IGS Final Orbits
From: AC Coordinator / NRCan GSDivision
Date: Wed, 14 Aug 1996 6:41:35 PDT

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IGS Electronic Report    Wed Aug 14  6:41:35 PDT 1996      Message Number 2890
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Author: AC Coordinator / NRCan GSDivision
Subject: Wk 0864 IGS Final Orbits

Final IGS Orbit Combination - Week 0864   (Jul 28, 1996 - Aug 03, 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 (IGS08647.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:

 IGS08640-6.SP3  IGS GPS ephemeris files for days 0-6, week 0864 in SP3 format.
 IGS08647.ERP    Earth rotation parameters (ERP) associated with ephemerides.
 IGS08647.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. Centre clock weights were determined using the following non-SA satellites:
   PRN15 and PRN28.

4. Some clock solutions were excluded from combination due to large clock
   shifts/outliers/rms that were biasing the combined clock solution, but were
   kept for the RMS computation. The following table lists the exclusions:

                 Day  (Date)   |   PRN    | Centres 
                ---------------+----------+---------
                  5   (Aug 02) |   ALL    |   ESA  

   Note that starting with week 860, Centres with clock RMS higher than 2 ns are
   excluded from the clock combination if they bias the combined clock solution.
   This will make IGS clock precision more comparable to the best ACs.

5. State vector resets were modeled for the following satellites to
   alleviate the effects of modelling problems, experienced by all centres,
   in the long arc process:

          Day (Date) |   TIME   |  PRN  | Centres  | Reason
         ------------+----------+-------+------------------------------
          3 (Jul 31) | 00:00:00 |  23   |   ALL    | Modeling problems
          5 (Aug 02) | 00:00:00 |  14   |   ALL    | Modeling problems

6. 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.

7. SIO solutions were not used in the combination due to late submission
   to CDDIS.

8. Starting with GPS week 0860, several modifications have taken place in the
   IGS combination.  Please refer to the IGS Final Report for GPS week 0860
   (IGS Report #2817 and IGS Mail #1391) for a description of these changes.

9. PRN20 has been unusable since May 10, 1996 (wk 0852, day5) beginning at 
   15:18. PRN20 will not return to service (ref. NANU 118-94204).

10.PRN10 was launched on Jul 16, 1996 (wk862, day2) at 00:50 (ref. NANU 
   120-96204). A follow up NANU will be sent out when the navigation payload on
   PRN10 (SVN40) is made available to users (ref. NANU 128-96225).

ORBIT COMBINATION AND EVALUATION STATISTICS:

For a complete description of tables and statistics, please refer to the report
posted on CDDIS (IGS08647.SUM).

Table 1: Week 0864 summary.                       (Jul 28, 1996 - Aug 03, 1996)

Table 1.0864.a   GPS week: 0864   MJD: 50292.0-50298.0

         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  74 | .00  .02  .00  -.39   .04  -.03   .1  .06  .06 |    -.1   -1.7    1.3
        | .01  .01  .00   .10   .06   .18   .1           |    2.5    5.2
emr  29 | .00  .00  .00   .26   .04   .47   .1  .08  .07 |  100.0   34.9     .5
        | .01  .01  .00   .09   .04   .12   .0           |   82.1    8.4
esa  57 | .00  .00 -.01   .12  -.14   .29   .2  .09  .08 |   -6.1    4.3    1.6
        | .00  .01  .01   .14   .15   .16   .1           |   16.4    7.5
gfz  46 | .00 -.02  .00   .16  -.03  -.31  -.2  .07  .06 |  100.0   34.5     .5
        | .01  .00  .00   .07   .06   .19   .1           |   82.1    8.5
igr  n/a| .00  .01 -.01  -.18   .01  -.12   .0  .06  .05 |    1.6   -3.8     .7
        | .01  .01  .01   .27   .13   .12   .1           |    2.3    5.1
jpl  34 | .00  .02  .00   .02   .02  -.09   .0  .06  .06 |  100.0   35.2     .5
        | .01  .01  .00   .10   .03   .11   .1           |   82.2    8.2
ngs  49 | .01 -.05  .00  -.11  -.01  -.48  -.1  .14  .14 |   -1.0     .3   78.1
        | .01  .01  .01   .26   .20   .26   .2           |    2.3    4.1

Table 1.0864.b   GPS week : 0864   MJD: 50292.0-50298.0

         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   4   3   4   3   4   4 |
   2  |   2   3   3   3   3   3   3 |
   3  |   3   4   3   4   4   5   4 |
   4  |   3   3   2   3   2   2   3 |
   5  |   3   3   3   3   3   3   3 |
   6  |   3   3   3   4   3   4   4 |
   7  |   4   3   4   3   3   3   3 |
   9  |   3   3   2   3   3   3   3 |
  14E |   4   4   4   3   4   5   4 |
  15  |   3   3   3   3   3   2   3 |
  16E |   4   4   4   5   5   5   4 |
  17  |   3   2   3   2   3   2   2 |
  18  |   3   3   3   3   3   3   3 |
  19  |   3   3   3   3   3   3   2 |
  21E |   4   4   4   4   4   4   4 |
  22  |   4   4   4   4   3   4   3 |
  23E |   5   5   6   6   4   4   6 |
  24  |   3   3   3   3   3   3   3 |
  25  |   3   3   3   3   3   3   4 |
  26  |   3   3   3   3   4   3   2 |
  27  |   2   3   2   2   2   3   2 |
  28  |   3   4   3   3   3   3   4 |
  29  |   4   4   4   4   3   3   3 |
  31  |   4   4   4   4   4   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 2.0864.0   GPS week: 0864   Day: 0   MJD: 50292.0

CENT STA|  DX   DY   DZ    RX    RY    RZ  SCL  RMS WRMS |   TOFT  TDRFT    RMS
--------|------------------------------------------------|---------------------
cod  68 | .00  .03  .00  -.37  -.05  -.27   .2  .06  .06 |   -1.0   -2.1    1.3
emr  30 |-.01  .00  .00   .12   .07   .38   .1  .07  .07 | 1882.3   27.0     .6
esa  56 | .00  .00 -.02   .31  -.24   .33   .1  .07  .07 |   19.5   -4.1     .9
gfz  47 | .00 -.02  .01   .29  -.05  -.38  -.2  .07  .06 | 1883.6   26.2     .4
igr  n/a| .01  .01  .00  -.50   .29  -.02   .0  .07  .06 |    5.6  -11.1     .9
jpl  37 | .00  .02  .01  -.05  -.03  -.03   .1  .06  .06 | 1882.9   27.2     .5
ngs  49 |-.01 -.04 -.01  -.28   .30   .02  -.3  .12  .12 |     .8   -5.9   78.3

Table 2.0864.1   GPS week: 0864   Day: 1   MJD: 50293.0

CENT STA|  DX   DY   DZ    RX    RY    RZ  SCL  RMS WRMS |   TOFT  TDRFT    RMS
--------|------------------------------------------------|---------------------
cod  74 | .01  .03  .00  -.50   .13   .18   .2  .07  .07 |     .8   -3.0    1.5
emr  28 |-.01  .00  .00   .22   .12   .35   .0  .08  .08 | 1915.4   38.8     .6
esa  57 | .00  .01  .00   .15  -.35   .41   .4  .10  .09 |  -11.9    8.8    1.1
gfz  46 |-.01 -.02  .00   .13  -.12  -.37  -.3  .07  .07 | 1918.3   37.6     .5
igr  n/a| .00  .02 -.02  -.53  -.08  -.12   .1  .06  .06 |    -.5     .4     .9
jpl  37 | .01  .02  .00  -.07   .02  -.04   .0  .05  .05 | 1916.8   38.9     .5
ngs  49 | .00 -.06 -.01   .17   .13  -.50  -.2  .13  .13 |     .9   -1.8   78.1

Table 2.0864.2   GPS week: 0864   Day: 2   MJD: 50294.0

CENT STA|  DX   DY   DZ    RX    RY    RZ  SCL  RMS WRMS |   TOFT  TDRFT    RMS
--------|------------------------------------------------|---------------------
cod  75 | .00  .01  .00  -.37   .06   .08   .2  .07  .07 |    1.7   -1.0    1.4
emr  29 |-.01  .00  .00   .20   .02   .53   .1  .07  .07 | 1955.3   42.2     .5
esa  57 | .00  .00  .00   .30  -.18   .56   .3  .11  .09 |   -1.4   18.6    1.2
gfz  46 | .00 -.02  .00   .08  -.05  -.45  -.3  .07  .06 | 1957.2   42.7     .4
igr  n/a| .01  .01  .00  -.36  -.07  -.12   .1  .05  .04 |     .6   -1.0     .5
jpl  37 | .00  .02  .00   .02   .04  -.22  -.1  .05  .05 | 1957.1   42.4     .5
ngs  49 | .02 -.06  .00  -.25   .15  -.41  -.2  .14  .14 |   -1.3    3.2   79.1

Table 2.0864.3   GPS week: 0864   Day: 3   MJD: 50295.0

CENT STA|  DX   DY   DZ    RX    RY    RZ  SCL  RMS WRMS |   TOFT  TDRFT    RMS
--------|------------------------------------------------|---------------------
cod  74 | .00  .02  .00  -.46   .07  -.09   .2  .06  .06 |   -1.1   -6.4    1.3
emr  30 |-.01  .01  .00   .30   .03   .51   .1  .08  .08 | 1994.4   30.7     .6
esa  57 | .01 -.01  .00   .04  -.20   .22   .1  .08  .08 |    3.4    4.4     .8
gfz  47 | .00 -.03  .00   .15   .05   .03  -.3  .06  .06 | 1996.8   30.7     .5
igr  n/a| .01  .01  .00  -.03   .02  -.22   .1  .05  .05 |    1.2   -3.7     .5
jpl  37 | .00  .03  .00   .01   .02  -.21   .0  .06  .06 | 1996.0   30.9     .5
ngs  50 | .00 -.07 -.01   .30  -.09  -.75  -.1  .15  .15 |   -5.8    4.3   77.1

Table 2.0864.4   GPS week: 0864   Day: 4   MJD: 50296.0

CENT STA|  DX   DY   DZ    RX    RY    RZ  SCL  RMS WRMS |   TOFT  TDRFT    RMS
--------|------------------------------------------------|---------------------
cod  74 | .00  .01  .00  -.48   .06   .18   .2  .06  .05 |   -1.1    2.3    1.3
emr  29 | .01  .00  .00   .42   .00   .44   .1  .07  .07 | 2035.2   30.7     .5
esa  57 | .00  .00  .00   .03  -.10   .19   .2  .09  .08 |   -2.3    -.9     .8
gfz  45 | .00 -.03  .00   .17  -.05  -.44  -.3  .07  .07 | 2037.0   30.5     .4
igr  n/a| .00  .00  .00   .06   .05  -.29  -.2  .05  .05 |     .8   -1.1     .5
jpl  28 |-.01  .02  .01   .05   .04  -.17   .2  .05  .05 | 2037.1   31.3     .5
ngs  49 | .01 -.05  .00  -.34  -.16  -.74   .0  .14  .14 |    -.8   -1.3   76.3

Table 2.0864.5   GPS week: 0864   Day: 5   MJD: 50297.0

CENT STA|  DX   DY   DZ    RX    RY    RZ  SCL  RMS WRMS |   TOFT  TDRFT    RMS
--------|------------------------------------------------|---------------------
cod  76 | .00  .02  .00  -.37  -.03  -.14   .0  .05  .05 |   -3.9    6.8    1.2
emr  30 |-.01  .00  .00   .26   .02   .70   .0  .07  .06 | 2064.0   48.6     .5
esa  58 | .01  .00 -.01  -.05   .12   .25   .3  .10  .09 |  -18.5    1.2    3.6
gfz  46 | .00 -.03  .00   .18  -.03  -.44  -.1  .07  .07 | 2066.0   47.8     .5
igr  n/a| .00  .00 -.01   .02  -.03  -.15  -.1  .05  .05 |    -.5    1.0     .5
jpl  37 | .01  .02  .00   .22   .05  -.03   .0  .06  .06 | 2065.1   48.5     .5
ngs  46 | .01 -.05  .02  -.32  -.17  -.57   .2  .15  .15 |   -1.1    5.4   79.8

Table 2.0864.6   GPS week: 0864   Day: 6   MJD: 50298.0

CENT STA|  DX   DY   DZ    RX    RY    RZ  SCL  RMS WRMS |   TOFT  TDRFT    RMS
--------|------------------------------------------------|---------------------
cod  76 | .00  .02  .00  -.22   .03  -.15   .0  .06  .05 |    3.8   -8.7    1.3
emr  30 | .01  .01 -.01   .27   .02   .41   .1  .09  .09 | 2110.9   26.5     .5
esa  57 | .00  .00 -.01   .06  -.05   .06   .2  .09  .08 |  -31.3    2.1     .8
gfz  47 |-.01 -.02  .00   .10   .06  -.10  -.2  .07  .06 | 2113.0   25.7     .5
igr  n/a| .00  .00  .00   .08  -.09   .05  -.1  .06  .06 |    4.1  -10.8     .6
jpl  28 | .00  .01  .01  -.04   .01   .08   .1  .06  .06 | 2112.1   27.0     .4
ngs  49 | .01 -.02 -.01  -.04  -.20  -.37  -.1  .12  .12 |     .3   -1.7   78.2

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 3.0864.0   GPS week: 0864   Day: 0   MJD: 50292.0

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

Table 3.0864.1   GPS week: 0864   Day: 1   MJD: 50293.0

               Weighted Average                Orbit Dynamics (7 days)
 PRN  | cod emr esa gfz igr jpl ngs  IGS |  cod emr esa gfz igr jpl ngs  IGS
------|----------------------------------|----------------------------------
   1  |   6  12   9   9   7   6  15    4 |    7  13  11  12   7   7  16    7
   2  |   6   5   5   6   3   5  11    3 |    8  10  10  11   7   7  18    7
   3  |   6   9  10   8   7   6  12    4 |    8  10  12  13   9   7  17    8
   4  |   8   6  10   7   9   4   8    3 |    8  10   8   9  11   7  10    7
   5  |   6   8   8   6   7   4   9    3 |    7   8  10  10   8   7  11    6
   6  |   7   8   7   6   4   6  13    3 |    8  11  12  13  10   8  14    9
   7  |   8   6   6   7   7   7  12    3 |    7  12   9  12  13   7  16    7
   9  |   6   8  12   5   4   5  13    3 |   14  17  22  14  14  12  16   14
  14E |   7  10  16   7   3   8  13    4 |    6  13  28  12   8   6  15    8
  15  |   7   5   6   4   5   4  14    3 |    9   8  10   9   7   7  13    6
  16E |   8   5  10   7  13   7  12    4 |   18  14  11  16  13  13  20   13
  17  |   5   6   5   4   3   4  10    2 |    7  10  12  13   7   8  16    9
  18  |   5   9   6   7   7   6   9    3 |   10   9  12  11  10  11  13   10
  19  |   4   5   8   9   4   5  10    3 |   15  16  21  20  16  17  14   17
  21E |   7   8  12  11   5   6  15    4 |    9  17  15  20   9  10  20   12
  22  |   7   9   7   8  12   6  14    4 |    8  15   8  17  14   9  15    9
  23E |  10  11  10   8   4   9  25    5 |    9  16  12  19   9   9  38   11
  24  |   7   6   8   4   4   4   7    3 |    7  10   5  10   8   9  10    7
  25  |   7   6   7   6   6   3   9    3 |    9  12   9  10  10   9   9    8
  26  |   6   5  10   8   4   3  10    3 |    7  10  12  11   9  11  13    8
  27  |   3   5  13   4   5   3   8    3 |   14  17  21  16  18  16  12   16
  28  |   7  16   9   7   3   5  11    4 |    7  21  11  14   9   7  16    9
  29  |   7  10  15   4   5   5  16    4 |    8   9  11  10   9  12  18    9
  31  |   7   5  12   9   5   5  14    4 |    8   7   7  12   6   8  15    6
------|----------------------------------|----------------------------------
 RMS  |   7   8  10   7   6   5  13      |T   9  12  13  13  10   9  16    9
 WRMS |   7   8   9   7   6   5  13      |NE  9  12  12  12  10   9  14    9
 MEDI |   7   7   9   7   5   5  12      |MD  8  12  11  12   9   9  15    9

Table 3.0864.2   GPS week: 0864   Day: 2   MJD: 50294.0

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

Table 3.0864.3   GPS week: 0864   Day: 3   MJD: 50295.0

               Weighted Average                Orbit Dynamics (7 days)
 PRN  | cod emr esa gfz igr jpl ngs  IGS |  cod emr esa gfz igr jpl ngs  IGS
------|----------------------------------|----------------------------------
   1  |   6   7  11   6   5   6  15    4 |    7  13  11  11  10   9  19    9
   2  |   6   5   9   9   5   4   9    3 |    8  11  10  16  11   9  19    8
   3  |   6   4   8   6   4   8  29    4 |    8   8  11  13  11   9  24    8
   4  |   4   5   9   5   4   4  14    3 |    7  12  10  10  15  12  22   11
   5  |   4   9   8   4   4   4  19    3 |    7  10  15  13  11   9  12    9
   6  |   8   9   8   7   4   5  14    4 |   10  15  12  12  12  10  14   11
   7  |   5   8   8   6   7   6  14    3 |    7  11  11  11  11   8  20    8
   9  |   8  10   5   6   4   5  11    3 |   19  21  25  22  18  19  18   19
  14E |   4   9   7   7   4   6  10    3 |    6  10  10  11   6   6  13    7
  15  |   6   5   5   5   4   5  17    3 |    8  10  12   9  14  12  16   10
  16E |  10  11   6 ---   6   7  12    5 |   13  22  12 ---  20  18  23   16
  17  |   4   7   6   5   4   4   7    2 |    9  15  13  13  14  11  16   12
  18  |   6   7   7   7   6   8  15    3 |   10  14  18  16  12  11  15   12
  19  |   4   6   8   6   5   4  10    3 |   14  17  19  21  16  16  17   17
  21E |   6   9   9   7   5   8  12    4 |   10  14  12  16  11   8  20   10
  22  |   8  10   7   5   6   4  18    4 |    9  13  11  15  11  10  21   10
  23E |   8  14  12   8   6  15  24    6 |   27  28  24  22  28  37  21   27
  24  |   6   7   4   6   5   7  12    3 |    9  14   8  10  15  13  21   11
  25  |   5   5   6   5   6   3  12    3 |   11  13  13  11  13  11  20   11
  26  |   5   7   7   7   5   6  13    3 |   10  13  13  12  11  12  15   11
  27  |   3   4   6   4   4   5   8    2 |   11  13  18  15  14  13  13   13
  28  |   5   9  12   5   3   5  13    3 |    9  10  11  14  11   9  15    9
  29  |   6   9   6   6   4   6  18    4 |    9  16  17  16  13  14  18   13
  31  |   4   6  14  10   5   5  14    4 |    8   5  12  12  11   9  13    8
------|----------------------------------|----------------------------------
 RMS  |   6   8   8   6   5   6  15      |T  11  14  14  14  13  13  18   12
 WRMS |   6   8   8   6   5   6  15      |NE  9  13  14  14  12  11  17   11
 MEDI |   6   7   8   6   5   5  14      |MD  9  13  12  13  12  11  18   11

Table 3.0864.4   GPS week: 0864   Day: 4   MJD: 50296.0

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

Table 3.0864.5   GPS week: 0864   Day: 5   MJD: 50297.0

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

Table 3.0864.6   GPS week: 0864   Day: 6   MJD: 50298.0

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

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 4.0864   GPS week: 0864   MJD: 50292.0-50298.0

CENT| CLK EPO  |      BRUS      |      USUD      |      WILL      |
----|----------|----------------|----------------|----------------|
cod | cod 2303 |U  47   30   85 |U  47   34   93 |   34   25   60 |
emr | emr 2302 |   39   25   73 |   35   25   71 |U  24   13   40 |
esa | esa 2039 |   44   25   88 |U  46   41  103 |   55   38  101 |
gfz | gfz 1145 |   34   24   78 |U  33   26   65 |   24   15   41 |
igr | igr 2299 |   38   25   74 |   35   24   70 |   23   13   40 |
igs | igs 2304 |   38   24   73 |   34   25   69 |   24   14   41 |
jpl | jpl 2287 |   38   23   73 |U  33   24   67 |   24   13   40 |

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 5.0864.0   GPS week: 0864   Day: 0   MJD: 50292.0

CENT| CLK EPO  |      BRUS      |      USUD      |      WILL      |
----|----------|----------------|----------------|----------------|
cod | cod 2302 |   39   28   81 |   45   31   91 |   36   26   64 |
emr | emr 2295 |   28   23   62 |   30   24   61 |   25   15   42 |
esa | esa 2055 |   27   21   64 |   33   26   75 |   24   17   47 |
gfz | gfz 1152 |   28   23   68 |   34   24   49 |   24   18   45 |
igr | igr 2290 |   28   23   63 |   31   22   55 |   24   14   42 |
igs | igs 2303 |   28   22   64 |   32   23   61 |   24   16   43 |
jpl | jpl 2287 |   28   21   62 |   30   22   57 |   24   15   42 |

Table 5.0864.1   GPS week: 0864   Day: 1   MJD: 50293.0

CENT| CLK EPO  |      BRUS      |      USUD      |      WILL      |
----|----------|----------------|----------------|----------------|
cod | cod 2300 |   43   30   83 |   50   41   97 |   36   24   59 |
emr | emr 2304 |   31   23   71 |   37   33   83 |   27   12   45 |
esa | esa 2042 |   28   20   65 |   46   33   88 |   28   14   52 |
gfz | gfz 1152 |   28   21   81 |   38   37   98 |   27   15   56 |
igr | igr 2303 |   28   21   70 |   38   31   85 |   26   12   46 |
igs | igs 2304 |   28   21   69 |   38   31   76 |   26   12   47 |
jpl | jpl 2288 |   30   19   69 |   36   30   77 |   27   12   48 |

Table 5.0864.2   GPS week: 0864   Day: 2   MJD: 50294.0

CENT| CLK EPO  |      BRUS      |      USUD      |      WILL      |
----|----------|----------------|----------------|----------------|
cod | cod 2304 |   51   33   76 |   67   34  113 |   31   25   60 |
emr | emr 2303 |   44   26   63 |   50   25   85 |   22   12   36 |
esa | esa 2077 |   45   28   57 |   53   27   95 |   28   15   39 |
gfz | gfz 1152 |   45   26   54 |   26   25   65 |   24   12   28 |
igr | igr 2304 |   41   26   62 |   48   23   86 |   21   11   33 |
igs | igs 2304 |   43   26   61 |   50   25   88 |   22   12   35 |
jpl | jpl 2285 |   39   25   59 |   48   22   84 |   22   11   35 |

Table 5.0864.3   GPS week: 0864   Day: 3   MJD: 50295.0

CENT| CLK EPO  |      BRUS      |      USUD      |      WILL      |
----|----------|----------------|----------------|----------------|
cod | cod 2304 |    0    0    0 |   40   35   84 |   32   26   63 |
emr | emr 2303 |    0    0    0 |   30   23   55 |   21   14   44 |
esa | esa 2061 |    0    0    0 |   30   24   54 |   25   17   44 |
gfz | gfz 1104 |    0    0    0 |   33   25   52 |   22   15   37 |
igr | igr 2304 |    0    0    0 |   28   22   50 |   22   15   42 |
igs | igs 2304 |    0    0    0 |   28   24   52 |   23   16   43 |
jpl | jpl 2288 |    0    0    0 |   27   23   47 |   25   15   43 |

Table 5.0864.4   GPS week: 0864   Day: 4   MJD: 50296.0

CENT| CLK EPO  |      BRUS      |      USUD      |      WILL      |
----|----------|----------------|----------------|----------------|
cod | cod 2304 |   43   28   85 |   38   32   77 |   36   22   67 |
emr | emr 2299 |   41   26   74 |   26   23   60 |   28   13   42 |
esa | esa 2014 |   41   25   72 |   27   25   67 |   26   15   45 |
gfz | gfz 1152 |   33   23   77 |   24   21   49 |   27   13   49 |
igr | igr 2304 |   41   25   74 |   24   21   56 |   25   13   42 |
igs | igs 2304 |   39   25   74 |   24   23   56 |   26   13   45 |
jpl | jpl 2288 |   45   23   74 |   24   23   56 |   27   13   44 |

Table 5.0864.5   GPS week: 0864   Day: 5   MJD: 50297.0

CENT| CLK EPO  |      BRUS      |      USUD      |      WILL      |
----|----------|----------------|----------------|----------------|
cod | cod 2304 |   59   33   92 |   41   32   86 |   33   24   52 |
emr | emr 2303 |   51   28   88 |   31   23   66 |   21   11   33 |
esa | esa 1965 |   72   33  150 |   76   87  188 |  131   93  243 |
gfz | gfz 1152 |   32   28   75 |   33   23   53 |   24   11   35 |
igr | igr 2288 |   51   27   89 |   31   24   66 |   20   10   36 |
igs | igs 2304 |   51   28   87 |   28   24   63 |   22   12   35 |
jpl | jpl 2288 |   49   27   88 |   28   23   61 |   21   10   33 |

Table 5.0864.6   GPS week: 0864   Day: 6   MJD: 50298.0

CENT| CLK EPO  |      BRUS      |      USUD      |      WILL      |
----|----------|----------------|----------------|----------------|
cod | cod 2304 |   43   25   90 |   41   32   94 |   31   28   55 |
emr | emr 2304 |   32   21   79 |   36   23   83 |   20   15   35 |
esa | esa 2059 |   33   19   85 |   36   24   92 |   26   16   41 |
gfz | gfz 1152 |   32   21  106 |   37   22   73 |   21   19   32 |
igr | igr 2302 |   35   26   80 |   38   21   80 |   19   16   39 |
igs | igs 2304 |   33   19   82 |   33   23   81 |   21   16   36 |
jpl | jpl 2288 |   32   19   84 |   33   21   79 |   20   17   35 |

[Mailed From: Pierre Tetreault <[email-masked]>]