Subject: [IGSREPORT-2362] Wk 0836 IGS Rapid Orbits
From: AC Coordinator / NRCan GSDivision
Date: Sat, 27 Jan 1996 19:17:48 PST

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IGS Electronic Report    Sat Jan 27 19:17:48 PST 1996      Message Number 2362
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Author: AC Coordinator / NRCan GSDivision
Subject: Wk 0836 IGS Rapid Orbits

Rapid Service IGS Orbit Combination - Week 0836   (Jan 14, 1996 - Jan 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 (IGS08367.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:

 IGS08360-6.SP3  IGS GPS ephemeris files for days 0-6, week 0836 in SP3 format.
 IGS08367.ERP    Earth rotation parameters (ERP) associated with ephemerides.
 IGS08367.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. Centre clock weights were determined using the following non-SA satellites:
   PRN12, PRN15 and PRN28. 

4  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 (Jan 16) | 00:00:00 | 23  |   ALL    | Modeling problems

5. 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.

6. Starting with GPS week 0834, long arc RMS for non-eclipsing satellites (NE)
   are now output below the total long arc RMS (T) (See Table 3).

7. Starting with GPS week 0834, the IGS combined orbits/clocks and all centres 
   providing both orbit and clock solutions are now further evaluated by an 
   independent point positioning (navigation) program. See COMBINATION
   STRATEGY AND ORBIT COMBINATION AND EVALUATION STATISTICS sections for more
   details. Tables 4 and 5 show the evaluation results.

ORBIT COMBINATION AND EVALUATION STATISTICS:

For a complete description of tables and statistics, please refer to the report
posted on CDDIS (IGS08367.SUM).

Table 1: Week 0836 summary.                       (Jan 14, 1996 - Jan 20, 1996)

Table 1.0836.a   GPS week: 0836   MJD: 50096.0-50102.0

         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  63 | .00  .03  .01  -.23   .03  -.15   .1  .07  .07 |    3.0   -2.0    1.8
        | .00  .01  .01   .15   .13   .27   .1           |    6.1    9.3
emr  29 | .01 -.04 -.01   .40  -.15   .36  -.1  .10  .10 |  220.9   19.7     .9
        | .00  .01  .00   .09   .10   .10   .1           |   41.2   13.5
esa  44 | .01 -.02 -.01   .33   .16  -.47   .2  .16  .13 |    2.1    4.8    1.9
        | .01  .01  .01   .22   .31   .20   .2           |   13.8   10.3
gfz  44 |-.03 -.02  .00   .08  -.02  -.11  -.3  .12  .11 |  222.7   19.4    7.1
        | .00  .01  .00   .10   .06   .07   .1           |   42.0   12.8
jpl  37 | .01  .03  .00  -.26   .02   .04   .2  .08  .08 |  221.0   19.8     .9
        | .01  .01  .01   .10   .14   .11   .1           |   41.2   13.6
ngs  44 | .00 -.02  .00   .23   .31   .07  -.1  .12  .12 |   -2.0    3.3   77.3
        | .01  .01  .01   .09   .14   .15   .2           |    4.9    9.6
sio  109|-.01  .02  .01  -.18  -.25   .01   .2  .10  .09 |     .0     .0     .0
        | .00  .01  .01   .09   .13   .34   .1           |     .0     .0

Table 1.0836.b   GPS week : 0836   MJD: 50096.0-50102.0

         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  |   4   3   3   3   3   3   4 |
   2  |   3   3   3   3   2   3   3 |
   4  |   3   4   3   3   3   4   4 |
   5E |   4   3   3   3   3   3   3 |
   6  |   3   3   3   3   3   4   3 |
   7  |   4   4   3   3   3   3   3 |
   9  |   3   3   3   2   2   3   3 |
  12  |   4   4   3   3   4   4   3 |
  14E |   4   4   5   5   3   4   4 |
  15  |   3   4   4   4   4   4   4 |
  16E |   3   5   4   4   4   4   4 |
  17  |   3   4   4   3   4   4   3 |
  18  |   3   3   2   2   2   2   3 |
  19  |   3   4   3   3   3   3   3 |
  20E |   5   4   6   4   3   3   3 |
  21E |   4   4   5   4   5   7   5 |
  22E |   3   4   4   3   4   4   3 |
  23E |   4   5   4   4   4   5  10 |
  24  |   4   4   4   4   4   4   5 |
  25  |   3   2   3   3   3   3   3 |
  26  |   3   4   3   3   4   3   3 |
  27  |   3   3   3   3   3   3   2 |
  28  |   3   3   4   4   4   4   3 |
  29  |   2   3   2   2   2   3   3 |
  31  |   4   6   5   4   4   4   5 |

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

Table 2.0836.0   GPS week: 0836   Day: 0   MJD: 50096.0

CENT STA|  DX   DY   DZ    RX    RY    RZ  SCL  RMS WRMS |   TOFT  TDRFT    RMS
--------|------------------------------------------------|---------------------
cod  62 | .00  .02  .00  -.26   .02   .07   .0  .06  .05 |   -3.5   -1.2    1.7
emr  27 | .01 -.04 -.02   .47  -.07   .27  -.2  .11  .11 |  150.4   35.0     .9
esa  43 | .02 -.02 -.01   .48   .64  -.56   .3  .13  .13 |  -20.4   11.0    1.8
gfz  41 |-.03 -.03  .00   .05  -.10  -.05  -.5  .13  .13 |  152.5   34.1    7.4
jpl  37 | .02  .03 -.01  -.31  -.08  -.20   .3  .07  .07 |  150.5   35.1    1.0
ngs  42 | .01 -.03  .00   .38   .21   .07  -.1  .13  .13 |   -2.8    -.3   75.4
sio  106| .00  .02  .01  -.09  -.26   .04   .1  .07  .07 |     .0     .0     .0

Table 2.0836.1   GPS week: 0836   Day: 1   MJD: 50097.0

CENT STA|  DX   DY   DZ    RX    RY    RZ  SCL  RMS WRMS |   TOFT  TDRFT    RMS
--------|------------------------------------------------|---------------------
cod  62 | .00  .04  .01  -.30   .11   .18   .1  .07  .07 |    6.4  -10.1    1.7
emr  29 | .01 -.04 -.01   .42  -.05   .50  -.1  .09  .09 |  186.1   21.4     .8
esa  44 | .01 -.03 -.02   .14   .08  -.59   .4  .14  .12 |    9.9   -5.0    1.9
gfz  42 |-.03 -.02  .01   .01   .02  -.07  -.4  .12  .11 |  187.1   21.6    7.0
jpl  37 | .00  .03 -.01  -.21  -.24   .01   .3  .09  .09 |  186.4   21.3     .9
ngs  43 | .00 -.02  .00   .27   .28  -.22  -.1  .12  .12 |    -.8     .0   77.0
sio  106|-.01  .02  .01  -.29   .03  -.63   .1  .15  .13 |     .0     .0     .0

Table 2.0836.2   GPS week: 0836   Day: 2   MJD: 50098.0

CENT STA|  DX   DY   DZ    RX    RY    RZ  SCL  RMS WRMS |   TOFT  TDRFT    RMS
--------|------------------------------------------------|---------------------
cod  65 | .01  .03  .00  -.17   .11   .07   .0  .06  .06 |    6.7   -1.5    1.6
emr  28 | .01 -.05 -.01   .34  -.25   .21  -.1  .10  .10 |  207.0   29.6     .8
esa  46 | .00 -.01  .00   .18   .24  -.46   .4  .16  .12 |    -.7    3.6    1.3
gfz  45 |-.03 -.03  .00   .16  -.07  -.13  -.1  .12  .12 |  206.3   35.0    7.8
jpl  37 | .01  .02  .00  -.13   .10   .14   .2  .07  .07 |  207.0   30.1     .8
ngs  43 |-.01 -.02 -.01   .08   .24   .08  -.3  .14  .11 |   -5.0    7.9   76.4
sio  107| .00  .02  .01  -.25  -.26  -.14   .2  .09  .09 |     .0     .0     .0

Table 2.0836.3   GPS week: 0836   Day: 3   MJD: 50099.0

CENT STA|  DX   DY   DZ    RX    RY    RZ  SCL  RMS WRMS |   TOFT  TDRFT    RMS
--------|------------------------------------------------|---------------------
cod  64 | .00  .03  .01  -.11   .15  -.48   .0  .06  .06 |    9.7   -2.7    1.8
emr  31 | .01 -.03 -.02   .48  -.18   .37  -.1  .09  .09 |  238.9    9.2     .7
esa  44 | .00 -.02  .01   .18  -.25  -.14   .0  .15  .13 |   -6.8   10.3    1.7
gfz  45 |-.03 -.02  .00   .19  -.03  -.22  -.2  .12  .11 |  237.8   13.8    6.0
jpl  37 | .00  .02  .00  -.34   .08   .07   .3  .07  .07 |  239.1    8.9     .8
ngs  47 | .01 -.02  .00   .23   .39   .23  -.2  .12  .12 |    3.1    1.6   78.1
sio  110|-.01  .02  .02  -.22  -.33   .41   .2  .08  .08 |     .0     .0     .0

Table 2.0836.4   GPS week: 0836   Day: 4   MJD: 50100.0

CENT STA|  DX   DY   DZ    RX    RY    RZ  SCL  RMS WRMS |   TOFT  TDRFT    RMS
--------|------------------------------------------------|---------------------
cod  64 | .00  .03  .00  -.13   .09  -.45   .0  .07  .07 |    5.3   -6.7    1.9
emr  31 | .01 -.03 -.02   .29  -.04   .33  -.2  .08  .08 |  247.4   12.6     .8
esa  45 | .01 -.02 -.01   .58  -.17  -.73   .1  .15  .12 |   20.8    -.7    2.1
gfz  45 |-.03 -.03  .00   .17  -.04  -.11  -.2  .12  .11 |  251.5    8.5    6.3
jpl  37 | .01  .02  .00  -.39   .17   .05   .4  .08  .08 |  247.4   12.8     .9
ngs  45 | .00  .00  .01   .17   .13   .16   .1  .14  .14 |   -1.8    3.2   75.7
sio  110|-.01  .03  .02  -.24  -.32   .28   .3  .08  .07 |     .0     .0     .0

Table 2.0836.5   GPS week: 0836   Day: 5   MJD: 50101.0

CENT STA|  DX   DY   DZ    RX    RY    RZ  SCL  RMS WRMS |   TOFT  TDRFT    RMS
--------|------------------------------------------------|---------------------
cod  62 | .00  .03  .01  -.13  -.01  -.33   .2  .08  .08 |    3.4   -9.1    1.9
emr  28 | .02 -.04 -.01   .32  -.17   .44  -.1  .10  .10 |  259.4   -1.7    1.0
esa  43 | .00 -.03 -.02   .62   .36  -.29   .2  .18  .16 |   -1.2   -7.3    2.1
gfz  45 |-.03 -.03  .00   .08   .01  -.03  -.3  .12  .10 |  259.1     .3    8.0
jpl  37 | .00  .03  .00  -.31   .10   .06   .1  .08  .08 |  259.4   -1.4    1.0
ngs  45 |-.01 -.01  .00   .24   .44   .21   .2  .12  .12 |    3.9  -10.2   78.0
sio  111|-.01  .02  .02  -.14  -.27  -.03   .2  .09  .08 |     .0     .0     .0

Table 2.0836.6   GPS week: 0836   Day: 6   MJD: 50102.0

CENT STA|  DX   DY   DZ    RX    RY    RZ  SCL  RMS WRMS |   TOFT  TDRFT    RMS
--------|------------------------------------------------|---------------------
cod  65 |-.01  .03  .02  -.53  -.24  -.13   .3  .10  .08 |   -7.1   17.6    2.0
emr  30 | .01 -.04 -.01   .49  -.29   .37  -.2  .10  .10 |  256.9   31.6    1.2
esa  42 | .00 -.03 -.02   .13   .21  -.54   .2  .19  .15 |   13.2   21.8    2.3
gfz  45 |-.03 -.02  .00  -.09   .06  -.16  -.2  .10  .10 |  264.4   22.5    7.3
jpl  37 | .01  .04 -.01  -.15   .01   .11   .1  .10  .10 |  257.1   32.1    1.2
ngs  45 | .00 -.05  .00   .23   .52   .00   .0  .11  .11 |  -10.6   21.2   80.1
sio  113| .00  .04  .01  -.05  -.32   .15   .4  .11  .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 3.0836.0   GPS week: 0836   Day: 0   MJD: 50096.0

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

Table 3.0836.1   GPS week: 0836   Day: 1   MJD: 50097.0

               Weighted Average                Orbit Dynamics (7 days)
 PRN  | cod emr esa gfz jpl ngs sio  IGS |  cod emr esa gfz jpl ngs sio  IGS
------|----------------------------------|----------------------------------
   1  |   3   5  17  10   9   9  12    3 |    7   8  20   7  12  10  18    7
   2  |   7   7  14   8   6   9  11    3 |    5  14  13  14   7  12  14   10
   4  |   7   9  14  11   9  12  11    4 |    4  10  14  15  10  12  15    8
   5  |   6   5  11   9   8  12  12    3 |   12  15  14  17  12  20  13   13
   6  |   6   6   8   8   8   9   9    3 |    4  11  12  11   6  13   8    8
   7  |   7   8  12   8  11  15  13    4 |    3  13  15  15  10  18  17   10
   9  |   6   4  11   7   6  11  11    3 |    6   9  12  11   8  16  11    9
  12  |   6  12   9  10  10  11   6    4 |    7  11  13  13   7  15  12   10
  14E |   9  10  18  10  11   9  13    4 |   13  25  21  21  13  18   9   15
  15  |   6   8  11  17  12  11   9    4 |    7  15  18  23   7  17  12   12
  16E |   6  15  25  11  11  14  10    5 |   22  28  31  24  17  33  26   24
  17  |   7   9   8  14   9  15  11    4 |    4  15  13  14   7  15   8    8
  18  |   5   6   6  10   7   5  18    3 |    6  10   9   9   7   9  16    7
  19  |   5   8   9  10   6  11  23    4 |    4  10   9   8   8  13  23    7
  20  |   7   6  17  12   7  18   9    4 |   12  16  21  23  16  23  16   15
  21E |   8   9  15  15   7  16  11    4 |   13  18  26  20  12  19  20   17
  22  |   5   7  10  19   9  10  14    4 |    4  13  17  15  10  12  16   11
  23E |  14  12  15  10  13  15  19    5 |   12  17  14  10  13  23  18   14
  24  |   6   9  19  12   6  11   9    4 |    5   9  18  12   6  15   9    8
  25  |   4   7   6   3   6   8   6    2 |    7   7  10   7  10   9  14    9
  26  |   9   4  16  13   8   6  15    4 |    8  12  15  12   8  15  21    9
  27  |   3  10  12  12   6   5  17    3 |    4  13   7   8   5   8  16    6
  28  |   8   9   9  11   5  10  14    3 |    5  14  15  16   9  14  16   12
  29  |   5   6  10   9   8  10  14    3 |    8   7   9  12   7  13  15    8
  31  |   9   8  17  11   9   7  38    6 |    5  15  17  17   7  15  41   13
------|----------------------------------|----------------------------------
 RMS  |   7   8  14  11   9  11  15      |T   8  14  16  15   9  16  17   11
 WRMS |   6   8  11  11   9  11  12      |NE  6  12  14  13   8  14  17    9

Table 3.0836.2   GPS week: 0836   Day: 2   MJD: 50098.0

               Weighted Average                Orbit Dynamics (7 days)
 PRN  | cod emr esa gfz jpl ngs sio  IGS |  cod emr esa gfz jpl ngs sio  IGS
------|----------------------------------|----------------------------------
   1  |   4   4  20   8   4   7   7    3 |    8   9  15  10  11   9  12    7
   2  |   7   7  16   9   5   9   6    3 |    5  14  13  14   7  15   8    8
   4  |   5  10  13  11   5   7   7    3 |    6   9  15  13   7  10  11    6
   5  |   4  10  10  11   6   9   9    3 |    7  14  13  16   7  12  14    9
   6  |   3   7   8  11   6  10  10    3 |    4  11  14  12   6  14  15    7
   7  |   7   8  14  13   6  10   9    3 |    4  13  14  16   6  15  11    7
   9  |   3   6  10   9   8  13   8    3 |    4   8   8   8   7   9  13    5
  12  |   5  14   8   6   5  12  10    3 |    7  11  10  12   7  10  10    7
  14E |  10  11  26  11   8  14   7    5 |   13  21  23  20  13  26  15   13
  15  |   5  11  12  16   6  11  12    4 |    4  14  15  19   6  16  14    6
  16E |   4  14  20  14   7  14   9    4 |   21  24  26  25  20  23  23   21
  17  |   4  12  13  10   8  19  10    4 |    3  17  15  13   6  16  12    7
  18  |   5   6   6   5   6   5   7    2 |    7  12  10   6  10   9  11    6
  19  |   6   7   8  12   8   7   6    3 |    3   9  10  10   9   8  10    5
  20  |   5  17  14  13   8  40  10    6 |   12  16  18  23  11  37  17   14
  21E |   8  16  13  22   7  10   8    5 |   10  20  21  24  12  19  17   15
  22  |   5   9  19  12   6  11   9    4 |    6  13  21  11   9  14  10    8
  23E |   9  12   9  13   8  17   6    4 |   17  16  18  16  18  14  18   16
  24  |   5   7  25  14   6  13   5    4 |    5   9  23  13   8  11  11    6
  25  |   4   7   9   6   5  11  12    3 |    5   8   9   7   9   9  15    7
  26  |   8   9   8  13   7   6   7    3 |   12   9  24  13  13  12  13   10
  27  |   5   5  17   9   6   3   6    3 |    4  10  10  10   7   8   8    6
  28  |   7  10  14  13   7  14   7    4 |    4  16  13  16   6  13  13    7
  29  |   6   5   8   5   6   7   8    2 |    8   9  11   8  10  16  11    7
  31  |   8  11  27  12   6   8  15    5 |    4  15  13  16   6  12  20    7
------|----------------------------------|----------------------------------
 RMS  |   6  10  15  12   6  13   9      |T   8  13  16  14   9  15  13    9
 WRMS |   5  10  12  12   6  11   9      |NE  6  12  14  13   8  14  12    7

Table 3.0836.3   GPS week: 0836   Day: 3   MJD: 50099.0

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

Table 3.0836.4   GPS week: 0836   Day: 4   MJD: 50100.0

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

Table 3.0836.5   GPS week: 0836   Day: 5   MJD: 50101.0

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

Table 3.0836.6   GPS week: 0836   Day: 6   MJD: 50102.0

               Weighted Average                Orbit Dynamics (7 days)
 PRN  | cod emr esa gfz jpl ngs sio  IGS |  cod emr esa gfz jpl ngs sio  IGS
------|----------------------------------|----------------------------------
   1  |  11   5  21   8   7  13   6    4 |    9  13  13  10  14  10  11   10
   2  |  10   6  20   7   5   4   6    3 |    9  15  17  18  12  18  11   14
   4  |   8   9  26   8   5   8   9    4 |    6  13  21  12   8  12   7   11
   5  |   7   5   7   9   7   9  10    3 |    8  12  14  12   9  13   8    9
   6  |   7  12  13   7   9   7   8    3 |    6  13  14  13   7  12   7   11
   7  |   7   5  15   8   7  11   7    3 |    5  16  12  16   8  13   8   11
   9  |   8   8   9   6   8   9   9    3 |    9  13  13  11  11  15  10   12
  12  |   7  11  10   4 ---   6  11    3 |   10  11  13   9 ---  14   9    8
  14E |  13   9  24   9   8   8   5    4 |    7  16  17  16   9  16   9   12
  15  |   9  14  11  10   8  15  11    4 |   10  16  16  17   8  16   9   13
  16E |  11  10  14  13   8  11   7    4 |   12  16  19  19  11  20  11   12
  17  |   6   5  14   6   9   8  11    3 |   10  16  19  14  10  23   9   16
  18  |   9   5   8   6   5  10   7    3 |    7  16  13  12  10  16   9   10
  19  |  10   7  10   8   5   9   7    3 |   10   9  15  11  10  16   9    9
  20  |   7   7  10   7   6  13  11    3 |    9  11  15  13   8  16   9   10
  21E |  11   7  19  16  10  15  16    5 |   24  31  35  36  21  36  21   29
  22  |   7   9  14   8   6  12   9    3 |    5   9  17  13   7  18   5    9
  23E |  19  28  28  26  29  24  28   10 |   28  27  22  22  35  22  34   22
  24  |   8  10  38  10   5   5   9    5 |   10  13  26  12  11  13   7   13
  25  |   9   5  13   6   5  13  10    3 |   11  12  13  12  11  18  11   13
  26  |   8  10  12   5   6   8   9    3 |   15  13  16  13  14  11  10   14
  27  |   8   5  11   5   6   4   7    2 |    9  10  12  10  11  14  11   10
  28  |   6   6  12  11   6   5  10    3 |    5  12  12  13   7  12  10   12
  29  |   8   5  18   5   4   7   8    3 |    7  12  13  10  10   8   9   10
  31  |   8   8  33  10  10  13   7    5 |    6  15  13  13   8  16   7   11
------|----------------------------------|----------------------------------
 RMS  |   9  10  18  10   9  11  10      |T  11  15  17  15  12  16  11   13
 WRMS |   8  10  14   9   9  10   9      |NE  8  13  15  12   9  14   8   11

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 4.0836   GPS week: 0836   MJD: 50096.0-50102.0

CENT| CLK EPO  |      BRUS      |      USUD      |      WILL      |
----|----------|----------------|----------------|----------------|
cod | cod 2149 |U  57   41   95 |U  55   36  100 |   45   33   82 |
emr | emr 2363 |   40   30   75 |   32   23   65 |U  28   17   44 |
esa | esa 2210 |  117   48  144 |U  68   48  122 |   69   39  105 |
gfz | gfz 1200 |  180  118  334 |U 201  109  318 |  191  111  293 |
igs | igs 2397 |   51   32   77 |   36   27   70 |   34   21   52 |
jpl | jpl 2352 |U  41   30   74 |U  29   22   63 |   34   19   51 |

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 5.0836.0   GPS week: 0836   Day: 0   MJD: 50096.0

CENT| CLK EPO  |      BRUS      |      USUD      |      WILL      |
----|----------|----------------|----------------|----------------|
cod | cod 2150 |   56   38  106 |   46   34   99 |   45   30   80 |
emr | emr 2373 |   43   30   73 |   26   23   51 |   28   17   45 |
esa | esa 2105 |   75   33  102 |   73   41  103 |   75   36  102 |
gfz | gfz 1200 |  165  109  331 |  198  130  345 |  195  118  346 |
igs | igs 2400 |   46   28   71 |   32   26   59 |   35   18   56 |
jpl | jpl 2394 |   43   30   71 |   24   21   52 |   35   19   55 |

Table 5.0836.1   GPS week: 0836   Day: 1   MJD: 50097.0

CENT| CLK EPO  |      BRUS      |      USUD      |      WILL      |
----|----------|----------------|----------------|----------------|
cod | cod 2185 |   54   38   93 |   56   45  118 |   44   35   78 |
emr | emr 2366 |   39   27   82 |   34   31   86 |   23   14   39 |
esa | esa 2149 |  151   54  184 |   57   51  112 |   54   30   72 |
gfz | gfz 1200 |  177  105  283 |  202  114  296 |  179  110  270 |
igs | igs 2398 |   55   31   81 |   35   33   88 |   26   19   38 |
jpl | jpl 2380 |   42   28   85 |   30   28   88 |   28   17   48 |

Table 5.0836.2   GPS week: 0836   Day: 2   MJD: 50098.0

CENT| CLK EPO  |      BRUS      |      USUD      |      WILL      |
----|----------|----------------|----------------|----------------|
cod | cod 2213 |   50   42   90 |   53   34   92 |   51   31   86 |
emr | emr 2320 |   38   28   71 |   30   20   65 |   28   15   42 |
esa | esa 2206 |   57   37  100 |   36   25   79 |   56   26   94 |
gfz | gfz 1200 |  191  123  353 |  212  106  358 |  213  118  327 |
igs | igs 2382 |   36   30   73 |   28   20   61 |   35   18   54 |
jpl | jpl 2366 |   38   28   68 |   27   19   55 |   32   15   50 |

Table 5.0836.3   GPS week: 0836   Day: 3   MJD: 50099.0

CENT| CLK EPO  |      BRUS      |      USUD      |      WILL      |
----|----------|----------------|----------------|----------------|
cod | cod 2209 |   48   39   77 |   57   40  103 |   45   31   88 |
emr | emr 2376 |   32   31   68 |   39   30   73 |   31   18   44 |
esa | esa 2259 |   92   42  145 |   56   53  109 |   65   39   91 |
gfz | gfz 1200 |  180  127  351 |  227  110  347 |  174  104  258 |
igs | igs 2400 |   38   32   77 |   42   32   78 |   34   21   50 |
jpl | jpl 2384 |   31   30   66 |   37   30   74 |   37   21   55 |

Table 5.0836.4   GPS week: 0836   Day: 4   MJD: 50100.0

CENT| CLK EPO  |      BRUS      |      USUD      |      WILL      |
----|----------|----------------|----------------|----------------|
cod | cod 2258 |   56   41   87 |   44   30   81 |   43   32   82 |
emr | emr 2373 |   37   30   77 |   30   18   60 |   30   19   50 |
esa | esa 2266 |   99   59  132 |   57   53  121 |   85   42  115 |
gfz | gfz 1200 |  198  104  300 |  217   93  314 |  198  122  250 |
igs | igs 2400 |   52   37   71 |   31   25   64 |   37   23   53 |
jpl | jpl 2383 |   41   32   71 |   28   18   56 |   37   21   57 |

Table 5.0836.5   GPS week: 0836   Day: 5   MJD: 50101.0

CENT| CLK EPO  |      BRUS      |      USUD      |      WILL      |
----|----------|----------------|----------------|----------------|
cod | cod 2016 |   61   39  108 |   60   30   93 |   41   39   85 |
emr | emr 2365 |   45   28   74 |   28   17   52 |   28   17   46 |
esa | esa 2231 |  142   53  152 |   83   42  139 |   60   43   92 |
gfz | gfz 1200 |  209  136  375 |  184  100  271 |  209  105  303 |
igs | igs 2400 |   63   31   83 |   34   20   54 |   32   23   51 |
jpl | jpl 2286 |   47   28   73 |   26   15   48 |   32   19   46 |

Table 5.0836.6   GPS week: 0836   Day: 6   MJD: 50102.0

CENT| CLK EPO  |      BRUS      |      USUD      |      WILL      |
----|----------|----------------|----------------|----------------|
cod | cod 2011 |   68   46  103 |   62   39  109 |   48   31   75 |
emr | emr 2367 |   44   34   77 |   33   18   60 |   28   17   41 |
esa | esa 2257 |  160   54  174 |   95   64  169 |   84   53  151 |
gfz | gfz 1200 |  128  121  339 |  162  108  281 |  165   99  286 |
igs | igs 2400 |   57   34   79 |   45   27   77 |   38   22   61 |
jpl | jpl 2269 |   43   33   80 |   32   16   56 |   36   19   44 |

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