Subject: [IGSREPORT-2614] Wk 0849 IGS Rapid Orbits
From: AC Coordinator / NRCan GSDivision
Date: Wed, 1 May 1996 5:10:40 PDT

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IGS Electronic Report    Wed May  1  5:10:40 PDT 1996      Message Number 2614
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Author: AC Coordinator / NRCan GSDivision
Subject: Wk 0849 IGS Rapid Orbits

Rapid Service IGS Orbit Combination - Week 0849   (Apr 14, 1996 - Apr 20, 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 (IGS08497.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 are computed using a weighted average of all available centres 
(weights are those from the orbit combination). These values are supplemented 
with the current IERS Bulletin A UT1-UTC values. 

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

 IGS08490-6.SP3  IGS GPS ephemeris files for days 0-6, week 0849 in SP3 format.
 IGS08497.ERP    Earth rotation parameters (ERP) associated with ephemerides.
 IGS08497.SUM    Complete report.

REMARKS on IGS Rapid Service 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. Starting with GPS week 0837, the igp orbits/clocks ("igp" standing for igs 
   preliminary combination) are now included in the rapid combination for 
   statitics only.  Note that the "igp" daily combination is performed on a 
   daily basis within 38 hours of last observation.

4. Centre clock weights were determined using the following non-SA satellites:
   PRN15 and PRN28. 

5. Some orbit solutions were excluded from the combination because they were
   biasing the weighted average. They were still used for statistics 
   computation.  The following table lists the exclusions:

                     Day (Date)  | PRN  | Centres  
                    -------------+------+---------------
                     5 (Apr 19)  |  16  | ESA           

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

          Day (Date) |   TIME   | PRN | Centres  | Reason
         ------------+----------+-----+-------------------------------------
          2 (Apr 16) | 00:00:00 | 16  |   ALL    | Modeling problems (a)
          3 (Apr 17) | 00:00:00 | 03  |   ALL    | Modeling problems
          4 (Apr 18) | 00:00:00 | 04  |   ALL    | Modeling problems
          4 (Apr 18) | 00:00:00 | 24  |   ALL    | Modeling problems

  (a) PRN 16 was set unhealthy from day 5/wk848 (Apr 12) at 20:40 until 
      day 1/wk849 (Apr 15) at 20:19 (ref. NANU 074-96106).
      PRN 16 was also set unhealthy from day 4/wk849 (Apr 18) at 19:48 until 
      day 5/wk849 (Apr 19) at 14:08 (ref. NANU 076-96110).

7. Centre specific UT1-UTC values for ESA and NGS were not used in the long arc 
   evaluation. Smaller RMS were obtained when UT1-UTC values from bulletin A
   were used.

ORBIT COMBINATION AND EVALUATION STATISTICS:

For a complete description of tables and statistics, please refer to the report
posted on CDDIS (IGS08497.SUM).

Table 1: Week 0849 summary.                       (Apr 14, 1996 - Apr 20, 1996)

Table 1.0849.a   GPS week: 0849   MJD: 50187.0-50193.0

         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  68 | .01  .01  .01  -.35   .03  -.45   .1  .08  .05 |    -.8   -2.6    1.6
        | .00  .00  .00   .14   .09   .21   .1           |    4.2    6.1
emr  28 | .00  .00  .00   .58  -.11   .53   .0  .10  .10 | 2013.7   20.3     .7
        | .00  .01  .01   .11   .05   .14   .1           |   51.6    8.3
esa  54 | .01 -.01  .00  -.11   .12   .00   .0  .26  .09 |   -4.6    7.1    7.8
        | .00  .00  .00   .11   .11   .12   .1           |    9.4   13.3
gfz  47 |-.04 -.05 -.02   .16   .00  -.40  -.3  .14  .14 | 2015.3   20.5     .7
        | .01  .01  .01   .04   .05   .18   .1           |   51.7    8.1
igp  n/a| .01  .00 -.01   .20   .11   .21  -.1  .11  .07 |     .6   -1.8    1.0
        | .01  .00  .01   .18   .23   .18   .1           |    2.2    4.4
jpl  37 | .01  .02  .00  -.13   .08   .17   .1  .08  .08 | 2014.3   21.0     .7
        | .00  .01  .01   .09   .09   .10   .1           |   51.7    8.3
ngs  44 | .01 -.05  .02   .10   .22  -.41  -.1  .17  .17 |    -.6   -1.2   78.0
        | .01  .01  .01   .36   .25   .23   .2           |    3.3    7.2
sio  111| .00  .02  .00   .07  -.14   .18   .0  .09  .09 |     .0     .0     .0
        | .01  .00  .00   .06   .10   .13   .1           |     .0     .0

Table 1.0849.b   GPS week : 0849   MJD: 50187.0-50193.0

         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   4   3   4   4   3 |
   2  |   3   4   3   4   4   3   3 |
   3  |  12  14  12   8   6   6   6 | Modeling problems on days 0-2.
   4  |   3   3   3   4   4   3   3 |
   5  |   3   3   3   3   3   3   3 |
   6  |   4   4   4   4   4   4   4 |
   7  |   3   3   3   4   4   3   4 |
   9E |   4   4   4   4   4   4   3 |
  14  |   3   3   3   3   3   3   3 |
  15  |   4   4   3   4   4   4   4 |
  16  |  10  10  13  18  11   9  10 | Modeling problems all week. See Rem #6.
  17  |   4   4   4   4   4   5   5 |
  18  |   4   3   4   4   3   4   5 |
  19E |   4   4   5   5   4   4   5 |
  20  |   3   3   3   3   3   3   3 |
  21  |   2   2   3   3   3   4   4 |
  22  |   3   4   4   3   4   3   3 |
  23  |   3   3   4   4   4   5   5 |
  24  |   3   3   3   8   4   3   3 |
  25E |   4   5   4   4   4   4   4 |
  26  |   4   4   5   5   4   4   4 |
  27E |   3   4   5   5   4   4   4 |
  28  |   3   4   4   4   3   3   4 |
  29  |   3   3   3   3   3   3   3 |
  31  |   4   4   4   4   4   4   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 2.0849.0   GPS week: 0849   Day: 0   MJD: 50187.0

CENT STA|  DX   DY   DZ    RX    RY    RZ  SCL  RMS WRMS |   TOFT  TDRFT    RMS
--------|------------------------------------------------|---------------------
cod  69 | .01  .01  .01  -.41   .05  -.53   .0  .07  .05 |    -.8    -.9    1.5
emr  29 | .00  .00 -.01   .72  -.06   .71  -.1  .10  .10 | 1942.2   22.8     .7
esa  54 | .01 -.01  .00  -.03   .20   .11   .0  .11  .10 |    6.0   14.4    6.1
gfz  46 |-.04 -.04 -.03   .20   .04  -.34  -.3  .14  .14 | 1943.3   22.5     .7
igp  n/a| .00 -.01  .00   .20  -.12   .12  -.1  .16  .07 |     .6   -1.8     .8
jpl  37 | .00  .00  .00  -.20  -.06   .02   .0  .06  .06 | 1942.3   23.6     .7
ngs  46 | .01 -.04  .02   .30   .51  -.80   .2  .16  .16 |   -1.1   -2.5   76.7
sio  111|-.01  .02  .01  -.03  -.23   .38   .0  .07  .07 |     .0     .0     .0

Table 2.0849.1   GPS week: 0849   Day: 1   MJD: 50188.0

CENT STA|  DX   DY   DZ    RX    RY    RZ  SCL  RMS WRMS |   TOFT  TDRFT    RMS
--------|------------------------------------------------|---------------------
cod  69 | .01  .01  .01  -.47  -.02  -.85   .0  .09  .06 |    4.8  -12.4    1.8
emr  29 | .00 -.01 -.01   .67  -.08   .71   .0  .09  .08 | 1966.4   12.9     .7
esa  54 | .01 -.01  .00  -.09   .20  -.07   .1  .15  .09 |   -9.8   -1.1    4.4
gfz  45 |-.05 -.04  .00   .13  -.09  -.37  -.2  .14  .13 | 1968.4   13.3     .7
igp  n/a|-.01  .00  .00   .09   .09   .01  -.2  .08  .06 |    4.6  -10.2    1.8
jpl  37 | .02  .01  .00  -.17   .11   .22   .1  .06  .06 | 1967.3   13.6     .7
ngs  45 | .00 -.04  .04   .29   .33  -.19   .0  .17  .17 |    4.3  -12.1   79.1
sio  111|-.01  .02  .00   .00  -.18   .18  -.1  .07  .07 |     .0     .0     .0

Table 2.0849.2   GPS week: 0849   Day: 2   MJD: 50189.0

CENT STA|  DX   DY   DZ    RX    RY    RZ  SCL  RMS WRMS |   TOFT  TDRFT    RMS
--------|------------------------------------------------|---------------------
cod  71 | .00  .01  .00  -.48   .01  -.42   .0  .10  .06 |   -7.4    2.6    1.7
emr  27 | .00  .00  .01   .46  -.12   .59  -.1  .10  .09 | 1987.1   21.4     .5
esa  55 | .00 -.01  .00  -.03   .15   .20   .1  .10  .09 |    1.2   -7.2    5.1
gfz  47 |-.03 -.05 -.02   .18  -.02  -.08  -.3  .13  .12 | 1989.0   21.6     .6
igp  n/a| .01 -.01  .00   .03   .16   .21  -.2  .07  .05 |    -.1    -.3     .6
jpl  37 | .00  .02  .00  -.21   .12   .10   .0  .10  .08 | 1987.8   22.2     .5
ngs  41 | .02 -.06  .01   .55   .32  -.59  -.1  .16  .16 |   -2.2    -.5   77.5
sio  109| .01  .02  .00   .11  -.19   .08   .1  .09  .09 |     .0     .0     .0

Table 2.0849.3   GPS week: 0849   Day: 3   MJD: 50190.0

CENT STA|  DX   DY   DZ    RX    RY    RZ  SCL  RMS WRMS |   TOFT  TDRFT    RMS
--------|------------------------------------------------|---------------------
cod  67 | .01  .00  .01  -.10  -.12  -.39   .0  .12  .06 |   -3.0    4.0    1.5
emr  28 | .00  .01  .01   .42  -.06   .35  -.1  .10  .09 | 2012.6   31.4     .6
esa  55 | .01 -.01  .00  -.13  -.06  -.15   .1  .09  .08 |   -7.9   15.3    4.0
gfz  49 |-.05 -.05 -.02   .07  -.01  -.32  -.1  .20  .20 | 2013.8   31.5     .7
igp  n/a| .02  .00  .00   .31   .52   .55  -.2  .13  .08 |     .5     .0     .9
jpl  37 | .00  .02  .01  -.23   .24   .23   .0  .09  .09 | 2012.8   31.9     .6
ngs  42 | .01 -.06  .03  -.51   .14  -.14  -.1  .22  .21 |   -6.5   12.5   78.8
sio  110| .00  .02  .00   .11   .03  -.02   .1  .10  .10 |     .0     .0     .0

Table 2.0849.4   GPS week: 0849   Day: 4   MJD: 50191.0

CENT STA|  DX   DY   DZ    RX    RY    RZ  SCL  RMS WRMS |   TOFT  TDRFT    RMS
--------|------------------------------------------------|---------------------
cod  65 | .01  .01  .01  -.23   .12  -.42   .2  .07  .05 |    3.8   -8.2    1.7
emr  28 |-.01  .00  .00   .57  -.11   .49   .1  .10  .11 | 2047.2    6.9     .6
esa  52 | .01 -.01  .00  -.31   .15   .02  -.2  .10  .09 |    5.7  -10.6    7.9
gfz  48 |-.04 -.06 -.02   .19   .04  -.65  -.3  .13  .12 | 2049.2    7.3     .7
igp  n/a| .01  .00 -.02   .49   .04   .05  -.2  .09  .06 |     .7    -.2     .6
jpl  37 | .01  .02  .00   .00   .02   .29   .3  .09  .09 | 2048.2    7.1     .6
ngs  48 |-.01 -.05  .00  -.22  -.11  -.37  -.3  .18  .18 |    1.4   -1.3   77.1
sio  112|-.01  .02  .00   .08  -.06   .18  -.2  .08  .08 |     .0     .0     .0

Table 2.0849.5   GPS week: 0849   Day: 5   MJD: 50192.0

CENT STA|  DX   DY   DZ    RX    RY    RZ  SCL  RMS WRMS |   TOFT  TDRFT    RMS
--------|------------------------------------------------|---------------------
cod  66 | .01  .01  .00  -.38   .11  -.36   .1  .06  .06 |   -2.4   -4.8    1.9
emr  28 | .00  .00  .00   .63  -.21   .40   .0  .09  .09 | 2054.6   26.8     .9
esa  53 | .02 -.01  .00  -.20   .22   .01   .2  .62  .10 |  -19.7   24.8   15.2
gfz  46 |-.05 -.05 -.01   .18   .02  -.48  -.2  .12  .11 | 2056.4   26.8     .9
igp  n/a| .02  .00 -.01  -.03   .23   .19   .0  .08  .06 |    1.1   -4.0    1.0
jpl  37 | .01  .02  .00  -.07   .08   .08   .1  .07  .07 | 2055.6   27.5     .9
ngs  44 | .00 -.06  .01   .02  -.10  -.36  -.4  .16  .16 |     .6   -3.8   79.3
sio  111| .00  .02  .01   .10  -.13   .27  -.1  .08  .08 |     .0     .0     .0

Table 2.0849.6   GPS week: 0849   Day: 6   MJD: 50193.0

CENT STA|  DX   DY   DZ    RX    RY    RZ  SCL  RMS WRMS |   TOFT  TDRFT    RMS
--------|------------------------------------------------|---------------------
cod  71 | .01  .01  .01  -.39   .10  -.17   .2  .05  .05 |    -.4    1.3    1.5
emr  28 | .00  .00  .00   .57  -.11   .47   .1  .11  .11 | 2085.5   19.9     .7
esa  56 | .01 -.02  .00   .01  -.01  -.11   .0  .11  .09 |   -7.9   14.1    5.8
gfz  45 |-.05 -.06 -.02   .17   .04  -.52  -.5  .14  .13 | 2086.8   20.3     .7
igp  n/a| .00  .00  .00   .27  -.15   .31   .1  .12  .07 |   -3.0    4.1     .7
jpl  37 | .00  .03 -.01  -.05   .05   .21   .1  .08  .08 | 2085.7   20.9     .6
ngs  42 | .01 -.05  .03   .28   .45  -.40  -.2  .16  .15 |    -.5   -1.0   77.7
sio  113| .01  .03  .00   .09  -.24   .15  -.1  .09  .09 |     .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 (all satellites).
         "NE" stands for Non-Eclipsing satellites long arc orbit RMS.

         Units: cm.

Table 3.0849.0   GPS week: 0849   Day: 0   MJD: 50187.0

               Weighted Average                Orbit Dynamics (7 days)
 PRN  | cod emr esa gfz igp jpl ngs sio  IGS |  cod emr esa gfz igp jpl ngs sio  IGS
------|--------------------------------------|--------------------------------------
   1  |   4   7  10  14   7   4   8   8    3 |    5   7   8  10   7   4   9   6    5
   2  |   5   8   8   9   5   6  16   6    3 |    5   8   8   8   6   5  14   3    4
   3  |  25  21 ---  27  69 --- ---  13   12 |   32  21 ---  35  51 --- ---  23   23
   4  |   3   8   7   9   5   7  15   6    3 |    5   9   9  11   6   5  11   4    5
   5  |   4   7   6   7   4   6  15   6    3 |    4   8   7   9   4   7  13   4    4
   6  |   6   9   8  19   6   5  16   5    4 |    4   8   6  12   9   5  14   7    4
   7  |   5   9   7  12   4   6  15   8    3 |    9  12   9  13   9   9  12   9    9
   9  |   6  15  11  13   6   7  11   7    4 |    6  13  10  14   7   6  14   6    6
  14  |   6   6   7   9   4   4  11  10    3 |   14  12  13  15  13  13  14  13   12
  15  |   5   7  13   7   7   4  25   8    4 |    4   8   9  13   8   6  10   8    6
  16  |  12  20 ---  35  11  10 --- ---   10 |   16  24 ---  12  13  18 --- ---   12
  17  |   7  10   9  16   9   4  13   6    4 |    3   7   6  13  10   4  10   4    4
  18  |   4   5  12  13   4   7  21   8    4 |    5   7  12  16   7   6  13   6    6
  19  |   7   5  14  17  14   7  15   9    4 |   11  10  19  21  15   9  16   9   10
  20  |   5  11   6   9   5   5  15   6    3 |    4  10   6   8   5   6   9   4    4
  21  |   4   7   7   7   4   5   8   7    2 |    5   6   8   8   7   6   9   5    5
  22  |   5   7  13   9   8   6  13   5    3 |    4  10  10   9   7   6  10   4    5
  23  |   6   8  12   7   6   5  13   5    3 |    6   7  11  11   7   9   9   8    7
  24  |   4   5  10  10   6   9  16   7    3 |    7  10  10  13   9   8  14   8    7
  25  |   4   8  11  14   8   5  20   7    4 |   14  14  15  17  15  13  18  11   13
  26  |   7   6  14  15   8   5  21   6    4 |    8   9  17  15   9   6  21   5    6
  27  |   4   7   9  13   9   8  17   7    3 |    6  10  13  15   9   7  14   4    6
  28  |   4   7  14  10   9   5  17   7    3 |    4   9  13  14   9   6  17   3    6
  29  |   4   7  12  13   5   4  19   6    3 |    5   8  11  16   6   8  14   6    6
  31  |   4  10  20  11  13   5  15   9    4 |    5  13  15  15  15   6  12   3    6
------|--------------------------------------|--------------------------------------
 RMS  |   7  10  11  14  16   6  16   7      |T   9  11  11  14  13   8  13   8    8
 WRMS |   5  10  10  14   7   6  16   7      |NE  9  11  11  14  13   8  13   8    8

Table 3.0849.1   GPS week: 0849   Day: 1   MJD: 50188.0

               Weighted Average                Orbit Dynamics (7 days)
 PRN  | cod emr esa gfz igp jpl ngs sio  IGS |  cod emr esa gfz igp jpl ngs sio  IGS
------|--------------------------------------|--------------------------------------
   1  |   8  10  10  12   9   6  12   4    3 |    5   9   8  10   8   5  12   4    5
   2  |   5   4   8   9   6   7  35   4    4 |    6   7   8   8   6   6  27   6    4
   3  |  32  19 ---  29  20 --- ---  15   14 |   33  21 ---  31  33 --- ---  18   18
   4  |   5   5   9  12   5   8  13   5    3 |    7   9  14  14   8   5  19   4    6
   5  |   4   4   6   8   3   4  16   4    3 |    4   5   6   9   4   6  12   4    3
   6  |   6   8  11  18   9   4  15   5    4 |    5   8   8  14   9   8  15   8    6
   7  |   7   9   7   9   5   4  17   5    3 |   11  12  11  11   8   9  18  10    9
   9  |   6   9   9  12   3   5  21   6    4 |    4  10   9  12   6   5  20   5    5
  14  |   8  11   8   8  10   3   6  11    3 |   17  20  14  19  19  18  22  15   17
  15  |   6   8   8   9   8   6  21   7    4 |    7   7   9  14   8   9  17   8    6
  16  |  15  12  50  30   7  11 ---  10   10 |   26  29   2  11  22  26 ---   0   19
  17  |   6   9   7  18   9   4  19   6    4 |    4   7   7  15   7   6  18   8    5
  18  |   6   7  12  10   5   5  13   8    3 |    5   8  11  15   6   6  11   8    5
  19E |   8   6  10  13   6   7  18   6    4 |   12  14  16  21  11  12  19  10   11
  20  |   4   5   7  15   6   5  14   4    3 |    3   5   6  11   5   6  10   4    3
  21  |   5   7   8   7   3   4   7   6    2 |    5   7   9   6   6   5   8   5    3
  22  |   5  14  14   8   6   4  17   8    4 |    5  15  10   9   5   8  11   5    5
  23  |   5   7   7   7   5   3  15   6    3 |    5   7   9   9   6   6   7   7    5
  24  |   5   5   7  11   6   7  17   7    3 |    8  11  12  14   8   7  21   7    7
  25E |   7  11  17  21  10   5  14   7    5 |   13  15  22  19  14  12  21  13   12
  26  |   6   8  16  12   5   6  13   6    4 |    6   8  16  16   8   5  14   5    5
  27  |   7   7   9  11   5   9  22   6    4 |    7   8   9  12   8   9  16   7    5
  28  |   5  11  16  11  10   7  17   9    4 |    4  10  11  13  10   7  21   3    5
  29  |   7   5   8  10   6   4  16   6    3 |    5   8   7  11   7   5  13   8    5
  31  |   3   8  17   9   7   5  12   9    4 |    6  12  15  14  11   6  15   7    7
------|--------------------------------------|--------------------------------------
 RMS  |   9   9  15  14   8   6  17   7      |T  11  12  11  14  11   9  16   8    8
 WRMS |   6   8   9  13   6   6  17   7      |NE 10  11  10  13  11   9  16   7    8

Table 3.0849.2   GPS week: 0849   Day: 2   MJD: 50189.0

               Weighted Average                Orbit Dynamics (7 days)
 PRN  | cod emr esa gfz igp jpl ngs sio  IGS |  cod emr esa gfz igp jpl ngs sio  IGS
------|--------------------------------------|--------------------------------------
   1  |   5  11   9  10   3   8  12  11    4 |    5  11   6  13   7   6  14   9    6
   2  |   3   7   7   8   6   6  15   6    3 |    4  10   8   9   5   6  13   7    5
   3  |  24  17 ---  17  19 --- ---  20   12 |   42  21 ---  32  25 --- ---  18   26
   4  |   4   6   6  14   7   9  13   6    3 |    6   8  10  14   7   6  20   7    7
   5  |   4   5   7   7   6   8  12   6    3 |    7   7   6  11   9   7   8  10    6
   6  |   4   5   9  12   7   5  19  10    4 |    5   7   5  13   7   6  24  13    6
   7  |   8   8   7  13   5   6  15   5    3 |    9  15  13  18  13  10  11  14   12
   9  |   8  11  12  18   7   9  12   7    4 |    9  23  20  21  12  12  17   9   12
  14  |   6   8   7   9   4   5  16  10    3 |   13  18  19  19  17  13  19  16   15
  15  |   6  10   7  11   6   8  16   4    3 |    5   8   6  16   8  10  13   5    5
  16  |  32  22 --- ---  11  31  20  20   13 |  205 179 --- --- 169 215 123 208  206
  17  |   6  13   8  13   6   7  12   9    4 |    4  10   8  15   7   6  15   4    4
  18  |   5   6   8  10   4   8  19  10    4 |    3   7   7  14   6   8  11   6    5
  19E |   8   9  10  20   4   8  23   9    5 |   10  18  15  29  13  10  27  14   13
  20  |   5   8  11  12   5   7  12   8    3 |    7   9   6  10   8   7  11  10    5
  21  |   5   6   7   7   2   7  10   8    3 |    4   8   7   9   5   8  11   5    4
  22  |   5   9  14   8   6   7  13   8    4 |    8  18  11  11  10   8  15  12    9
  23  |   6   9  10   9   6   7  20   8    4 |    5   9  11  14   6   8  13   5    6
  24  |   8   7   7  10   6   8  15   5    3 |   12  14  13  18  12  10  25  11   11
  25E |   7   9  11   9   7   6  13   8    4 |   17  16  15  21  13  10  23  16   14
  26  |   7   9  13  21   6   9  18   8    5 |    9  11  14  15   8   5  19   9    6
  27E |   7  11  11  15   4  10  20   9    5 |    6  11  13  16   8   6  21   9    7
  28  |   6  10  13  14   3   6  19   8    4 |    3  10  12  14   6   5  22   5    5
  29  |   5   7  10  10   4   5  14   5    3 |    3   7   9  11   5   4  13   6    3
  31  |   4   9  10  11   4   7  11  10    4 |    6  11  13  17   8   8  12   5    7
------|--------------------------------------|--------------------------------------
 RMS  |  10  10  10  13   7  10  16   9      |T  42  37  11  16  35  44  30  42   42
 WRMS |   6   9   9  12   5   8  16   9      |NE 45  40  11  15  37  47  31  45   44

Table 3.0849.3   GPS week: 0849   Day: 3   MJD: 50190.0

               Weighted Average                Orbit Dynamics (7 days)
 PRN  | cod emr esa gfz igp jpl ngs sio  IGS |  cod emr esa gfz igp jpl ngs sio  IGS
------|--------------------------------------|--------------------------------------
   1  |   6   9   8  12   6   6  13   6    3 |    6   9   8  12   7   4  15   9    4
   2  |   7   7   6  10   8   5  37   9    4 |    7   8   6  12   7   8  31  11    6
   3  |  12  10 ---  20  46 --- ---  15    8 |   25  23 ---  28  43 --- ---  27   23
   4  |   9   9   8  11   6  11  22   6    4 |   13  14  15  10  14  15  25  11   11
   5  |   4   6   7   7   4   7  11   7    3 |    8  10  10  11  11   7  13  13    9
   6  |   5   7   6  14   6   6  29   7    4 |    4   9   6  11   8   7  32   7    5
   7  |   7   8   9   9   8   7  21   8    4 |   33  38  34  32  34  36  41  36   34
   9E |   7  11   8  15   7   8  21   6    4 |    9  18  11  18  17   9  28  10   11
  14  |   8   6   7   9   5   3  13  11    3 |   36  38  35  33  37  34  37  36   36
  15  |   6  11   8   8   7   6  15   9    4 |    6   8   8  12   7   5  13   9    4
  16  |  41  21 ---  74  31  28 ---  23   18 |  403 353 --- 338 363 376 --- 360  384
  17  |   7  15   6  13   6   7  19   8    4 |    5  12   8  13  11   6  18   6    5
  18  |   5   9   7  12   5   7  13  12    4 |    5   8   8  12   5   7  11  10    5
  19E |   8  10   9  23   6   9  23  10    5 |    8  10  11  22  11   7  21  10    7
  20  |   3   4   5   9   6   5  11   9    3 |    4   6   6  13   6   5  13   8    3
  21  |   7   6   6  10   6   3  14   6    3 |    6   8   8  11   8   7  15   6    6
  22  |   6   7   7  10   6   4  14   7    3 |    9   8  10  12   8  11  12  13    7
  23  |   8  14   5  11   5   8  20   8    4 |    7  16  12  16  15   9  13   8    9
  24  |  24  10  12  15   4  15  51  20    8 |   22  37  41  33  33  40  45  38   31
  25E |   6  11   8  17   8   6  18   6    4 |   17  14  15  22  17  16  29  13   14
  26  |   9  17  12  16  17  12  18  11    5 |    7  19  18  15  22  12  17  11    8
  27E |   7  11   9  19   6  11  28   9    5 |    9  11  14  21  13   6  28  12   10
  28  |   6   7   7  11   9   5  24   7    4 |    5  11  12  14  10   6  21   8    5
  29  |   4   6  12  15   4   6  10   6    3 |    5   7  11  15   7   7  14   8    5
  31  |   4   8  14  11  10   7  18  12    4 |    6   8  12  13  10   4  14  16    6
------|--------------------------------------|--------------------------------------
 RMS  |  12  10   9  20  13   9  22  10      |T  81  72  16  70  74  78  24  73   78
 WRMS |   6   9   8  20   8   9  21  10      |NE 89  79  17  75  81  85  23  80   85

Table 3.0849.4   GPS week: 0849   Day: 4   MJD: 50191.0

               Weighted Average                Orbit Dynamics (7 days)
 PRN  | cod emr esa gfz igp jpl ngs sio  IGS |  cod emr esa gfz igp jpl ngs sio  IGS
------|--------------------------------------|--------------------------------------
   1  |   4  12   9  11   6   7  18   8    4 |    5  11   9  12   9   7  17   5    5
   2  |   4   8  16  11   7   5  16   7    4 |    5   8  14   9   8   7  15   7    5
   3  |   9   8 ---  17  19 ---  21  15    6 |   20  20 ---  25  26 ---  22  20   18
   4  |   7   9   8  14   4   7  11   9    4 |    4   8  11  13   7   5  15   6    5
   5  |   6   7   5   7   5   9  18   8    3 |    6   9   8   9   8   9  14  10    7
   6  |   4   7  11  15   8  10  14   8    4 |    4   8   9  10   9  10  18   8    5
   7  |  13   8  16   9   8   5  14   6    4 |   22  22  20  21  19  21  26  21   19
   9E |   5  12   7  18   6   5  14   6    4 |    7  14  10  21   9   8  14   9    7
  14  |   8  11   8   7   5   5  13   9    3 |   15  10   9  12  12  12  13   9   10
  15  |   5  11   8  10   6   8  29   7    4 |    5   9   7  11   9   6  15   6    4
  16  |  14  24 ---  28  24  27 ---  14   11 |  504 500 --- 477 514 521 --- 510  507
  17  |   7  17   9  14   5   5  17   9    4 |    4   9   6  15   8   6  15   5    5
  18  |   5   9   7  10   4   6  15   9    3 |    4  10   9  12   7   6  14   6    6
  19E |   8   7   9  13   4   7  25   7    4 |    9  14   9  14  10  10  23   9    9
  20  |   3   6   8  11   5   7  11   4    3 |    4   8   7  12   6   6   9   5    4
  21  |   7   7   6  11   3   5  12   7    3 |    5   6   8   9   5   7  10   5    3
  22  |   9   7  12   9   7   5  16   5    4 |   16  19  21  19  17  17  21  17   17
  23  |   8   8   7   9   6   7  21   6    4 |    5   8  10   9   6   8  14   6    5
  24  |   5   8  12  10   8   9  20   9    4 |    5   9   9  12   8   7  18   6    5
  25E |   5  11   9  16  10   6  23   7    4 |    9  11  12  19  13  10  22  11    9
  26  |   5  10  14  12   7   9  16   6    4 |    7   7  14  14   8   7  13   6    5
  27E |   6   6  11  13   4   7  27   7    4 |    7   9  13  13   8   8  20   7    6
  28  |   4   9   9  12   8   7  14   6    3 |    5   8  11  13  10   7  14   5    5
  29  |   4   8   7  10   5   7  16   7    3 |    4   8   7  11   8   6  13   7    4
  31  |   4  14  12  10   8   8  23  10    4 |    6   9  12  14   7   7  17   8    5
------|--------------------------------------|--------------------------------------
 RMS  |   7  10  10  13   9   9  18   8      |T 101 100  11  96 103 106  16 102  101
 WRMS |   5  11   9  12   6   9  18   8      |NE110 109  11 104 112 116  16 111  110

Table 3.0849.5   GPS week: 0849   Day: 5   MJD: 50192.0

               Weighted Average                Orbit Dynamics (7 days)
 PRN  | cod emr esa gfz igp jpl ngs sio  IGS |  cod emr esa gfz igp jpl ngs sio  IGS
------|--------------------------------------|--------------------------------------
   1  |   4  10  14  11   6  10  12   9    4 |    5  11   9  11   6  10  17   7    5
   2  |   6   6   6   9   5   5  11   7    3 |    6   9  11   9  10   9  12   5    7
   3  |   7   7 ---  16  23 ---  13  14    6 |   17  16 ---  24  27 ---  19  15   16
   4  |   4   9   8  10  11   7   9   7    3 |    3   9  10  11   9   5  13   4    4
   5  |   6   8   8   6   4   4  15   6    3 |    6  11   7  10   9   9  13   8    8
   6  |   6   7   8  15   8   4  26   5    4 |    4   7   6  11   7   5  21   4    4
   7  |   5  11   6   7   5   7   9   6    3 |   15  18  12  19  15  14  21  16   14
   9E |   7   9   8  11   9  10  12   5    4 |    8  12  11  16  14   8  18   5    9
  14  |   5  10   8   8   7   6  12   8    3 |   19  21  22  21  20  20  22  21   20
  15  |   4  10   6   9   4   8  18  10    4 |    4   8   6  10   7   6  10   6    4
  16  |  13 --- 302 --- ---  14 ---  11    9 |  543 ---   7 --- --- 538 --- 515  540
  17  |   8  18   7  17   4   8  17   7    5 |    5  14   6  15   5   5  17   7    5
  18  |   4   7  16  11   3   7  13  11    4 |    4  12   8  15   6   7  11   6    6
  19E |   8   9  10  12  11   6  18   7    4 |    8  12  11  15  11   9  18   5    8
  20  |   4   6   7  10   5   4  12   5    3 |    4   7   6  12   5   7  10   3    5
  21  |   5  10  10   9   6   7  14   9    4 |    3  10   9   8   7   9  12   5    5
  22  |   6   7  10  14   6   5  14   7    3 |   10  11  14  11  12  12  12  11   10
  23  |   7  12  12   8   4   9  29   8    5 |    5  14  10  10   7   8  18  11    7
  24  |   6   8   8  10   7   7  11   7    3 |    3  10   8  12  10   6  15   4    5
  25E |   7   9  13  15  12   8  18   6    4 |   11  17  19  21  24  14  24  11   13
  26  |   7   8  11  11   7   8  15   8    4 |    6  11  15  13   9   9  10   9    7
  27E |   7   9   9  16   9   5  17   9    4 |    8  10  14  12  13   7  10   6    7
  28  |   4   8  11  11   6   6  13   7    3 |    4  10  11  12   9   6  14   4    6
  29  |   3   7   9  11   4   5   9   7    3 |    4   9   6  11   5   4  10   5    4
  31  |   3   9   9  12   4  11  19   8    4 |    5   9  10  13   7   8  15   5    5
------|--------------------------------------|--------------------------------------
 RMS  |   6   9  62  12   8   7  16   8      |T 108  12  11  14  12 110  15 103  108
 WRMS |   6   9  10  11   6   7  16   8      |NE118  11  10  13  10 120  15 112  118

Table 3.0849.6   GPS week: 0849   Day: 6   MJD: 50193.0

               Weighted Average                Orbit Dynamics (7 days)
 PRN  | cod emr esa gfz igp jpl ngs sio  IGS |  cod emr esa gfz igp jpl ngs sio  IGS
------|--------------------------------------|--------------------------------------
   1  |   2  12  13   9   6   6  13   7    3 |    6  11   8  11   9   6  14   6    6
   2  |   5   6   9  11   4   5  12   9    3 |    8  10   9  12   7  11  14   9    8
   3  |   7  13 ---  20  29 ---  16   9    6 |   21  20 ---  25  22 ---  19  21   19
   4  |   3   7  10  12   7   7  12   9    3 |    3   8   8  12   7   5  12   6    4
   5  |   4   7   8  10   8   6  13   7    3 |    9   9   6  10   7   7  13  10    7
   6  |   3   9   7  12   7  10  18   7    4 |    4   7   6  12   7   9  16   5    5
   7  |   5  13   8   7   5   9  20   8    4 |   12  17  14  15  15  15  16  11   12
   9E |   5   9   7  11   9   9  15   6    3 |    6  12  13  14   9   8  20  10    8
  14  |   4  14   7   8   5   7   7   8    3 |   16  24  18  19  20  16  23  16   17
  15  |   4  11  10   8   4   9  18  10    4 |    5   5   6  10   6   9  11   7    4
  16  |   8  26 ---  35  42  13  22 ---   10 |  299 226 --- 245 235 293 125 ---  293
  17  |   6  15   9  19   8   8  18  10    5 |    5  13   6  15   7   9  18   7    6
  18  |   4   8  28  14   6   7  11  10    5 |    4  10  14  11   6   8  11   9    5
  19E |   9  15  10  14   7   8  18  11    5 |    7  20   9  10  13   9  17  11    8
  20  |   4   8   6   9   7  11  14   6    3 |    5  10   6   9   7   8  15   9    5
  21  |   4  11  10   9   5   8  18   9    4 |    6  14  10  10   8  12  14   7    7
  22  |   4   7  10  12   7   7  13  11    3 |    9  10  11  15  10  16  13  16   11
  23  |   6  13   7   9  13  10  23  17    5 |    7  15  12  11  12  13  24  17   10
  24  |   5   6   6  11   9   6  16   7    3 |    3   8   9  13  10   4  17   3    5
  25E |   6  12   8  16  10   8  16   6    4 |   12  12  13  17  15  12  22  10   10
  26  |   6  11  15  11   5   7  17   5    4 |    7  11  13  14   9   9  13   5    7
  27E |   6   9  11  15   6   8  14   9    4 |    8  11  10  14   9   9  15   5    6
  28  |   5  10  15  11   5   8  14   6    4 |    5   7  10  11   8   9  16   6    5
  29  |   3   8  11  11   5   8  13   7    3 |    5   7   8  10   6  10  12   8    4
  31  |   5   9  10  10  10  12  11   7    4 |    5   9  11  11  12  11  13   6    6
------|--------------------------------------|--------------------------------------
 RMS  |   5  11  11  14  12   8  16   9      |T  60  46  10  50  48  60  29  10   59
 WRMS |   5  11   9  13   7   8  15   9      |NE 65  50  10  55  52  66  31  10   64

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 4.0849   GPS week: 0849   MJD: 50187.0-50193.0

CENT| CLK EPO  |      BRUS      |      USUD      |      WILL      |
----|----------|----------------|----------------|----------------|
cod | cod 2271 |U  53   36   95 |U  57   43  108 |   42   32   76 |
emr | emr 2295 |   38   32   74 |   44   35   76 |U  24   13   43 |
esa | esa 1939 |  222  151  421 |U 270  183  417 |  208  116  280 |
gfz | gfz 1186 |   40   32   79 |U  58   42   78 |   25   15   43 |
igp | igp 2347 |   55   34   83 |   47   36   78 |   29   17   52 |
igs | igs 2386 |   39   31   80 |   46   34   76 |   25   15   44 |
jpl | jpl 2292 |U  37   30   73 |U  43   34   75 |   23   14   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 5.0849.0   GPS week: 0849   Day: 0   MJD: 50187.0

CENT| CLK EPO  |      BRUS      |      USUD      |      WILL      |
----|----------|----------------|----------------|----------------|
cod | cod 2265 |   36   35   71 |   84   61   95 |   37   27   73 |
emr | emr 2302 |   25   28   55 |   86   59   72 |   20   12   44 |
esa | esa 1904 |  296  139  487 |  225  134  323 |  193  115  270 |
gfz | gfz 1200 |   24   28   56 |  121   73   52 |   17   13   42 |
igp | igp 2248 |   28   30   62 |   89   60   72 |   20   13   49 |
igs | igs 2378 |   27   28   62 |   86   57   71 |   21   14   42 |
jpl | jpl 2303 |   24   26   52 |   85   57   71 |   20   12   41 |

Table 5.0849.1   GPS week: 0849   Day: 1   MJD: 50188.0

CENT| CLK EPO  |      BRUS      |      USUD      |      WILL      |
----|----------|----------------|----------------|----------------|
cod | cod 2259 |   55   34  102 |   51   42  129 |   36   50   90 |
emr | emr 2294 |   31   26   65 |   36   27   72 |   19   13   43 |
esa | esa 2022 |  154   93  364 |  164   98  292 |  141   99  243 |
gfz | gfz 1200 |   33   26   89 |   43   32   84 |   20   16   44 |
igp | igp 2315 |  104   40   97 |   39   31   79 |   46   26   54 |
igs | igs 2384 |   33   25   85 |   39   28   76 |   20   18   45 |
jpl | jpl 2303 |   30   24   68 |   36   26   73 |   20   14   43 |

Table 5.0849.2   GPS week: 0849   Day: 2   MJD: 50189.0

CENT| CLK EPO  |      BRUS      |      USUD      |      WILL      |
----|----------|----------------|----------------|----------------|
cod | cod 2271 |   63   39  119 |   54   49  128 |   55   32   83 |
emr | emr 2293 |   48   41  104 |   39   41   96 |   25   14   42 |
esa | esa 1950 |  187  126  356 |  175  100  280 |  177   95  233 |
gfz | gfz 1152 |   45   37   98 |   48   57  131 |   28   16   39 |
igp | igp 2386 |   52   41  109 |   41   43  100 |   27   17   48 |
igs | igs 2383 |   49   37  108 |   38   42   98 |   27   15   44 |
jpl | jpl 2287 |   49   39  101 |   38   41   97 |   27   15   41 |

Table 5.0849.3   GPS week: 0849   Day: 3   MJD: 50190.0

CENT| CLK EPO  |      BRUS      |      USUD      |      WILL      |
----|----------|----------------|----------------|----------------|
cod | cod 2241 |   56   39   81 |   42   37  107 |   36   24   56 |
emr | emr 2276 |   47   31   62 |   30   27   96 |   21   14   38 |
esa | esa 1892 |  175  106  342 |  122   70  193 |  102   65  173 |
gfz | gfz 1200 |   53   33   69 |   31   26   74 |   20   16   38 |
igp | igp 2383 |   51   32   80 |   32   35   99 |   26   19   64 |
igs | igs 2377 |   48   31   65 |   28   28   92 |   22   12   35 |
jpl | jpl 2292 |   46   30   60 |   28   27   92 |   21   13   30 |

Table 5.0849.4   GPS week: 0849   Day: 4   MJD: 50191.0

CENT| CLK EPO  |      BRUS      |      USUD      |      WILL      |
----|----------|----------------|----------------|----------------|
cod | cod 2301 |   54   28   83 |   55   34   98 |   51   31   81 |
emr | emr 2299 |   42   25   73 |   26   19   48 |   33   13   50 |
esa | esa 1880 |  296  168  574 |  293  202  501 |  350  162  360 |
gfz | gfz 1200 |   53   25   85 |   28   26   55 |   40   16   56 |
igp | igp 2397 |   42   24   71 |   26   21   47 |   32   15   55 |
igs | igs 2394 |   42   23   70 |   28   21   51 |   35   15   52 |
jpl | jpl 2287 |   41   21   71 |   23   19   48 |   31   13   47 |

Table 5.0849.5   GPS week: 0849   Day: 5   MJD: 50192.0

CENT| CLK EPO  |      BRUS      |      USUD      |      WILL      |
----|----------|----------------|----------------|----------------|
cod | cod 2243 |   46   35   81 |   59   36  101 |   38   30   70 |
emr | emr 2205 |   33   31   63 |   31   30   79 |   24   13   44 |
esa | esa 1985 |  163  227  327 |  498  351  744 |  177  117  314 |
gfz | gfz 1152 |   31   32   51 |   51   26   64 |   19   14   42 |
igp | igp 2298 |   35   31   62 |   39   26   77 |   17   13   43 |
igs | igs 2386 |   32   31   66 |   46   25   78 |   24   15   48 |
jpl | jpl 2287 |   26   28   60 |   32   30   77 |   18   15   40 |

Table 5.0849.6   GPS week: 0849   Day: 6   MJD: 50193.0

CENT| CLK EPO  |      BRUS      |      USUD      |      WILL      |
----|----------|----------------|----------------|----------------|
cod | cod 2315 |   56   43  114 |   43   36   89 |   37   24   71 |
emr | emr 2397 |   34   37   86 |   30   23   59 |   26   15   42 |
esa | esa 1938 |  229  155  434 |  233  167  332 |  224  136  324 |
gfz | gfz 1200 |   30   40   90 |   24   23   55 |   24   14   37 |
igp | igp 2400 |   36   36   85 |   30   23   59 |   25   14   47 |
igs | igs 2400 |   38   37   91 |   26   22   56 |   23   13   41 |
jpl | jpl 2285 |   34   39   86 |   28   21   50 |   24   15   36 |

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