Subject: [IGSREPORT-2561] Wk 0846 IGS Rapid Orbits
From: AC Coordinator / NRCan GSDivision
Date: Tue, 9 Apr 1996 12:05:29 PDT

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IGS Electronic Report    Tue Apr  9 12:05:29 PDT 1996      Message Number 2561
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Author: AC Coordinator / NRCan GSDivision
Subject: Wk 0846 IGS Rapid Orbits

Rapid Service IGS Orbit Combination - Week 0846   (Mar 24, 1996 - Mar 30, 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 (IGS08467.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:

 IGS08460-6.SP3  IGS GPS ephemeris files for days 0-6, week 0846 in SP3 format.
 IGS08467.ERP    Earth rotation parameters (ERP) associated with ephemerides.
 IGS08467.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. Higher clock RMS for NGS on day 3 (Mar 27) were caused by 
   clock jumps on PRN06;

5. Note that PRN12 was set unhealthy starting on Nov. 18, 1995 (wk827, day 6)
   and was supposed to be disposed of on Mar. 26, 1996 (wk846, day2) 
   (Ref. NANU 051-96086). Therefore, PRN12 combined orbits/clocks should be 
   used with caution.

6. Centre specific UT1-UTC values for ESA 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 (IGS08467.SUM).

Table 1: Week 0846 summary.                       (Mar 24, 1996 - Mar 30, 1996)

Table 1.0846.a   GPS week: 0846   MJD: 50166.0-50172.0

         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  69 | .00  .01  .00  -.34   .02   .29   .2  .06  .06 |   -2.5   -5.2    1.5
        | .01  .01  .00   .13   .15   .53   .1           |    4.4    8.5
emr  29 | .01  .00  .00   .46  -.09   .22  -.2  .10  .10 | 1525.7   18.0     .7
        | .00  .00  .01   .12   .11   .30   .1           |   44.9    8.1
esa  55 | .00  .00 -.01  -.06   .07  -.16   .2  .09  .08 |    5.9    5.2    6.2
        | .00  .00  .00   .10   .08   .18   .1           |   20.4   15.1
gfz  48 |-.04 -.05  .00   .24   .04  -.49  -.3  .11  .11 | 1527.3   18.4     .6
        | .01  .01  .00   .06   .10   .12   .1           |   44.6    7.8
igp  n/a| .01  .00 -.01   .13  -.22   .13   .1  .07  .06 |    -.5    -.6    1.3
        | .01  .01  .01   .24   .09   .17   .2           |    1.4    2.7
jpl  37 | .01  .01  .00  -.20   .06  -.02   .1  .06  .06 |  960.9    9.9     .7
        | .00  .01  .00   .09   .10   .20   .1           |  728.8   13.0
ngs  47 | .02 -.06  .01   .11   .37  -.09  -.3  .14  .14 |  -34.0   56.7 1310.9
        | .01  .01  .02   .18   .19   .13   .2           |   86.7  161.2
sio  111|-.01  .02  .00   .12  -.20  -.10   .0  .07  .06 |     .0     .0     .0
        | .00  .00  .00   .04   .07   .31   .2           |     .0     .0

Table 1.0846.b   GPS week : 0846   MJD: 50166.0-50172.0

         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
------|-----------------------------|------------------------------------------
   1E |   5   4   4   4   4   4   4 |
   2  |   4   3   2   2   2   3   3 |
   4  |   4   3   3   3   4   3   4 |
   5  |   3   3   2   2   3   2   3 |
   6E |   4   5   4   5   4   3   4 |
   7E |   4   3   3   3   3   4   4 |
   9  |   3   4   3   3   2   3   3 |
  12  |   6   5   4   0 --- --- --- | End of life testing (day 2). See Remark 5.
  14  |   3   3   3   3   2   3   3 |
  15  |   3   3   3   3   3   3   3 |
  16  |   7   6   3   3   3   3   4 |
  17  |   4   4   3   3   3   3   3 |
  18E |   5   4   4   4   3   3   4 |
  19  |   3   3   3   3   3   3   3 |
  20  |   3   3   3   3   2   3   3 |
  21  |   3   3   3   3   3   3   3 |
  22  |   3   3   3   3   3   3   4 |
  23  |   4   4   3   3   3   3   3 |
  24  |   4   4   3   3   3   3   3 |
  25  |   3   3   4   3   3   4   3 |
  26E |   4   4   4   4   4   4   4 |
  27  |   3   3   3   3   3   3   2 |
  28E |   4   4   3   4   4   4   4 |
  29E |   3   4   3   4   3   3   3 |
  31E |   6   4   3   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 2.0846.0   GPS week: 0846   Day: 0   MJD: 50166.0

CENT STA|  DX   DY   DZ    RX    RY    RZ  SCL  RMS WRMS |   TOFT  TDRFT    RMS
--------|------------------------------------------------|---------------------
cod  69 |-.01  .01  .00  -.21  -.02   .94   .2  .08  .07 |   -8.3    9.2    1.5
emr  28 | .01  .00  .00   .39  -.17  -.22  -.2  .10  .10 | 1461.0   30.0     .8
esa  54 | .00  .00 -.01  -.05   .11  -.26   .1  .09  .07 |  -30.5   24.9    4.7
gfz  49 |-.04 -.06  .00   .29  -.14  -.58  -.5  .13  .12 | 1462.6   29.8     .7
igp  n/a| .02 -.02 -.03  -.07  -.11   .09  -.2  .09  .09 |   -1.9    1.4     .9
jpl  37 | .02  .02  .00  -.30   .19  -.40   .1  .08  .08 |  -49.8   11.8     .8
ngs  46 | .01 -.05  .01   .37   .42  -.10  -.2  .15  .16 |  -11.4   11.3   77.8
sio  117|-.01  .01  .00   .07  -.11  -.11  -.1  .08  .07 |     .0     .0     .0

Table 2.0846.1   GPS week: 0846   Day: 1   MJD: 50167.0

CENT STA|  DX   DY   DZ    RX    RY    RZ  SCL  RMS WRMS |   TOFT  TDRFT    RMS
--------|------------------------------------------------|---------------------
cod  70 | .01  .00  .00  -.41  -.29  1.17   .0  .08  .07 |    1.5  -14.0    1.6
emr  28 | .01 -.01  .00   .33  -.07  -.03  -.2  .12  .12 | 1486.0   20.4     .7
esa  55 | .00  .01 -.01  -.05   .17  -.33   .2  .08  .07 |   22.3   -1.6    3.3
gfz  48 |-.04 -.04  .00   .16   .15  -.69  -.3  .11  .11 | 1487.6   20.6     .7
igp  n/a| .02  .00 -.01  -.16  -.29  -.07   .0  .08  .08 |    -.3    -.8    2.0
jpl  37 | .01  .02  .00  -.18   .17  -.13   .1  .06  .06 | 1486.1   21.2     .7
ngs  47 | .03 -.07  .02   .23   .59  -.13  -.6  .15  .15 |   -5.9    5.3   76.4
sio  114|-.01  .02  .00   .14  -.13  -.42   .1  .07  .06 |     .0     .0     .0

Table 2.0846.2   GPS week: 0846   Day: 2   MJD: 50168.0

CENT STA|  DX   DY   DZ    RX    RY    RZ  SCL  RMS WRMS |   TOFT  TDRFT    RMS
--------|------------------------------------------------|---------------------
cod  68 | .00  .01  .00  -.16   .14  -.03   .1  .05  .04 |   -4.9   -9.2    1.4
emr  30 | .00  .00 -.01   .42  -.03   .19  -.1  .10  .09 | 1502.2   20.8     .7
esa  53 | .01  .00 -.01  -.10  -.04   .10   .1  .09  .09 |   14.7   20.6   11.5
gfz  47 |-.04 -.05 -.01   .30   .07  -.43  -.3  .11  .11 | 1504.5   20.9     .6
igp  n/a| .01  .00 -.01   .01  -.22   .07   .1  .06  .05 |    1.9   -4.7     .7
jpl  37 | .01  .02  .00  -.28  -.06   .18   .0  .05  .05 | 1503.5   21.8     .6
ngs  47 | .01 -.06  .03   .14   .08  -.12  -.3  .13  .13 |    4.8  -22.0   77.1
sio  113|-.01  .02  .00   .16  -.21  -.08   .0  .07  .06 |     .0     .0     .0

Table 2.0846.3   GPS week: 0846   Day: 3   MJD: 50169.0

CENT STA|  DX   DY   DZ    RX    RY    RZ  SCL  RMS WRMS |   TOFT  TDRFT    RMS
--------|------------------------------------------------|---------------------
cod  70 | .00  .02  .00  -.44   .09   .05   .1  .06  .05 |    4.7  -15.3    1.6
emr  30 | .01  .00  .00   .55  -.09   .14  -.4  .09  .09 | 1531.5    9.7     .7
esa  56 | .00  .01  .00  -.06   .06  -.16   .4  .10  .09 |    -.8   -9.1    4.8
gfz  49 |-.03 -.05 -.01   .19   .06  -.49  -.3  .11  .11 | 1533.4   10.1     .6
igp  n/a| .01  .00  .00   .06  -.27   .07  -.1  .06  .05 |    -.5     .1    2.1
jpl  37 | .01  .01  .00  -.05  -.04   .08   .0  .05  .05 | 1154.6   -5.9     .6
ngs  46 | .01 -.05  .00  -.10   .44   .11  -.2  .14  .14 | -230.2  421.5 3463.0
sio  110| .00  .03  .01   .09  -.20  -.04  -.2  .07  .06 |     .0     .0     .0

Table 2.0846.4   GPS week: 0846   Day: 4   MJD: 50170.0

CENT STA|  DX   DY   DZ    RX    RY    RZ  SCL  RMS WRMS |   TOFT  TDRFT    RMS
--------|------------------------------------------------|---------------------
cod  70 | .00  .02  .00  -.36   .07   .07   .3  .06  .05 |   -2.2   -5.0    1.5
emr  30 | .01  .00  .00   .38   .02   .67  -.1  .07  .07 | 1544.9   13.4     .8
esa  56 | .00  .00  .00  -.22  -.03  -.38   .2  .10  .09 |   -9.1    5.8    2.5
gfz  48 |-.04 -.05  .00   .28  -.01  -.36  -.2  .10  .09 | 1546.8   13.9     .7
igp  n/a| .00  .00 -.01   .20  -.15   .44   .1  .05  .04 |     .1   -2.7     .9
jpl  37 | .02  .01  .00  -.29   .13   .09   .2  .06  .06 | 1151.0   -1.8     .9
ngs  50 | .01 -.05 -.01   .19   .45   .04  -.3  .14  .14 |   -1.6   -3.3   78.0
sio  105|-.01  .02  .01   .13  -.24  -.54  -.2  .07  .07 |     .0     .0     .0

Table 2.0846.5   GPS week: 0846   Day: 5   MJD: 50171.0

CENT STA|  DX   DY   DZ    RX    RY    RZ  SCL  RMS WRMS |   TOFT  TDRFT    RMS
--------|------------------------------------------------|---------------------
cod  68 | .00  .01 -.01  -.53   .08  -.13   .2  .05  .05 |   -2.8   -1.7    1.5
emr  28 | .01  .00  .00   .70  -.01   .49  -.2  .10  .10 | 1570.5    7.8     .6
esa  55 | .00  .01  .00   .12   .06   .03   .2  .09  .08 |   21.5  -16.0    6.2
gfz  47 |-.04 -.05  .00   .21   .03  -.49  -.2  .10  .10 | 1571.7    8.5     .5
igp  n/a| .01  .00 -.01   .34  -.34   .04   .3  .07  .06 |   -2.6    3.7    1.0
jpl  37 | .01  .01  .00  -.15   .05  -.03   .1  .05  .05 | -103.5   -2.1     .6
ngs  48 | .02 -.06  .01   .00   .13  -.20  -.3  .14  .14 |    4.8  -12.6   80.3
sio  108|-.01  .02  .01   .18  -.22   .40   .0  .07  .06 |     .0     .0     .0

Table 2.0846.6   GPS week: 0846   Day: 6   MJD: 50172.0

CENT STA|  DX   DY   DZ    RX    RY    RZ  SCL  RMS WRMS |   TOFT  TDRFT    RMS
--------|------------------------------------------------|---------------------
cod  67 | .00  .02  .00  -.27   .10  -.03   .3  .06  .06 |   -5.7    -.8    1.3
emr  26 | .01  .00  .01   .43  -.29   .32  -.3  .10  .11 | 1583.5   24.3     .6
esa  53 | .01  .01 -.01  -.03   .15  -.13   .2  .08  .08 |   23.4   12.1    6.3
gfz  46 |-.03 -.06 -.01   .26   .13  -.38  -.3  .10  .10 | 1584.3   24.9     .6
igp  n/a| .01 -.01 -.01   .52  -.14   .26   .4  .06  .06 |    -.3   -1.3    1.1
jpl  37 | .01  .02  .00  -.19   .00   .09  -.1  .05  .05 | 1584.4   24.5     .6
ngs  45 | .02 -.06  .04  -.08   .50  -.26   .0  .14  .14 |    1.3   -3.4   78.5
sio  113| .00  .02  .00   .10  -.33   .06   .2  .08  .06 |     .0     .0     .0

Table 3: Daily fit for each satellite and each centre resulting from weighted
         average combination and from long arc orbit dynamics (7-day). The
         first IGS column gives resulting satellite accuracy measures found in
         SP3 header. The last IGS column gives the RMS fit of the IGS orbit
         when processed through the 7-day arc evaluation.

         "E" stands for  eclipsing satellites.
         "T" stands for Total long arc orbit RMS (all satellites).
         "NE" stands for Non-Eclipsing satellites long arc orbit RMS.

         Units: cm.

Table 3.0846.0   GPS week: 0846   Day: 0   MJD: 50166.0

               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
------|--------------------------------------|--------------------------------------
   1E |   5  13   9  18  11  13  24  10    5 |    6  14  10  20  12   9  23   9    7
   2  |   7   7  14   8   6   5  16   6    4 |    5   7   9  13   8   7   9   5    5
   4  |   6   5   9  10   5   7  18   8    4 |    7  11   9  14   7   7  16   7    7
   5  |   9   7   4   9   7   4   9   6    3 |    6  10   7  14   8   5   9   4    4
   6E |  12   9  10  12  16   7  18  11    4 |   12  14  11  18  16   9  19  10   10
   7E |  10  10   9   8  13   8  16  12    4 |    8  13  11  16  12   9  20   8    8
   9  |   4   6  10  11   6   7  12   4    3 |    6   7   6  10  10   6  14   5    6
  12  |   5 --- --- ---  12 ---  14   8    6 |    4 --- --- ---   8 ---   6   6    6
  14  |   6   8   5   9   7   6  15   7    3 |    7   7   5  11  10   9  16   8    5
  15  |   5   9   6  13  14   7  16   6    3 |    7  11  12  17  12  12  13  10    8
  16  |  12  15  17  27  16  15  17  13    7 |   24  29  37  32  36  34  33  37   32
  17  |   8  11   6  12   7   7  15   5    4 |    9  11   9  14  11   9  15   4    6
  18E |  10  14   6  18   7   7  17  10    5 |   12  17  14  18  11   9  22   9   12
  19  |   8   9   7  12   6   5   9   5    3 |    7  11   9  10   9   7  13   5    7
  20  |   7   7   7   9   6   6   8   6    3 |    5   6   6  13   8   6  10   5    4
  21  |   4   9   6   9   7   9  15   7    3 |    6  10   7  14  10  10  15   6    5
  22  |   6   6   5   9   6   6  15   9    3 |    7  10  10   9   9   8  11   7    7
  23  |   7  13   5   5   6  10  16   5    4 |   13  13  16  16  14  15  13  14   13
  24  |  10   8  10  13   7   7  12   8    4 |    6  11  11  18   9   7  15   8    7
  25  |   6   6   5  13   5   5  12   7    3 |    9   8  11  11   9   8  15   7    8
  26E |   7  10  11  14  11   9  19  10    4 |   11  16  26  18  18  11  24   9   12
  27  |   7   8   5  12   7   6   9   5    3 |    8  11   9  12  10   9  13   8    8
  28E |   5  10   9  17   8   8  17   8    4 |    7  14  13  18  12   9  18   9    8
  29E |   8  11   4  15   8   4  12   7    3 |   12  15  12  18  14  10  20   8   12
  31E |   8  17  23  14  14   9  19  13    6 |    7  15  14  16  14  10  20   8    9
------|--------------------------------------|--------------------------------------
 RMS  |   8  10   9  13   9   8  15   8      |T   9  12  13  16  13  11  17  10   10
 WRMS |   7  10   7  12   9   8  16   7      |NE  9  11  13  15  12  11  14  11   10

Table 3.0846.1   GPS week: 0846   Day: 1   MJD: 50167.0

               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
------|--------------------------------------|--------------------------------------
   1E |   6  12   8  13  14   6  24   8    4 |    6  15   8  19  11   6  24   6    7
   2  |   4   7  10   8   5   4  17   5    3 |    7   7   9   7   7   6   7   4    6
   4  |   5  10   6   8   5   8  17   5    3 |   10  11   8  11   8   5  17   4    6
   5  |   9   7   5   8   6   4  13   7    3 |    8   8   8  10   7   4  12   5    5
   6E |  18   8  12  15  12   7  16  10    5 |   14  12  13  17  13   6  16   9    9
   7E |   6  13   5  11   5   6   8   6    3 |   10  16   8  16   8   7  15   7    9
   9  |   8  11   7  13   5   6  18   7    4 |    9  11   8  10   8   5  17   7    5
  12  |   3 --- --- ---   6 ---  16   6    5 |    5 --- --- ---   7 ---   6   9    6
  14  |   6   6   4  14   7   6  10   4    3 |    6   8   6  13   9   7  11   5    6
  15  |   6  10   7   8   8   4  11   5    3 |    7   7   7   9   7   4  10   4    3
  16  |  15  22  14  13  12   9  14  14    6 |   21  31  19  26  25  24  27  27   22
  17  |  10  12   5  15   9   7  14   6    4 |   10   9   7  14   8   6  12   5    4
  18E |   6  19   6  12   7   8  15   6    4 |   10  11  10  14  10  13  16   7    8
  19  |   6  10   7  11   5   4  13   5    3 |    9  11   7  11   7   5  12   3    6
  20  |   9   9   6  11   8   4  10   6    3 |    7   6   6   8   8   6  12   4    4
  21  |   8  11   7   7   5   7  16   7    3 |    7  11   7  10   8   7  12   6    5
  22  |   6   8   9   7   8   5  16  10    3 |    7   9   8   7   6   5  14   4    5
  23  |   9  10   7   5   5   7  18   7    4 |    9   8  12  10  10  11  13  10    8
  24  |   6   8  12   8   6 ---  13   7    4 |    9  13   8  13   8 ---  13   4    6
  25  |   6   8   7  10   6   6  15   6    3 |   11   9  11  10   9   8  18   4    8
  26E |  11  11  10  13   8   6  23   5    4 |   11  13  14  18  15   8  25   7   10
  27  |   6   8   6   9   4   5  14   6    3 |   11  13  10  10  11   7  12   5    8
  28E |   4  12   7  16  13   7  15   9    4 |    9  11  10  17  11   6  15   8    7
  29E |   6  15   8  13  11   5  12   6    4 |   12   9   9  13  12  10  17   7    8
  31E |   4  18  10  14  14   6  15   8    4 |   10  14  14  12  13   8  16   5    8
------|--------------------------------------|--------------------------------------
 RMS  |   8  12   8  11   8   6  15   7      |T   9  12   9  13  10   8  15   8    7
 WRMS |   7  12   7  11   8   6  15   6      |NE  9  12   9  11   9   8  14   8    7

Table 3.0846.2   GPS week: 0846   Day: 2   MJD: 50168.0

               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
------|--------------------------------------|--------------------------------------
   1E |   4  15  10  14   5   5  16   9    4 |    8  14  12  19  10  10  20   9    8
   2  |   2   7   8   7   3   4  13   4    2 |    5   7   7   8   7   5   9   4    4
   4  |   4   8   7   7   4   6  13   5    3 |    4  10  12  12   8   7  15   6    7
   5  |   4   6   6   8   4   3   8   6    2 |    6   8   7  11   6   6   7   5    5
   6E |  12   8   8  13   9   8  12   8    4 |   12  10  10  16   9   8  15   8    8
   7E |   4  10   5  10   4   6  11   5    3 |    6  10  11  15  10   7  17   6    7
   9  |   3   5   7  13   3   3  11   6    3 |    5   7  10  11   7   7   9   5    5
  12  |   3 --- --- ---   9 ---   9   9    4 |    5 --- --- ---   6 ---   8   8    9
  14  |   4   8   7  10   4   4   9   6    3 |    6   7   8  10   6   4  12   6    5
  15  |   3  11   6  10   7   5  11   5    3 |    4  10  10  13   9   9  11   8    6
  16  |   3  12   8   9  10   7  11   7    3 |   20  20  19  17  24  17  22  17   19
  17  |   5   6   8  11   5   4  12   6    3 |    5   9  10  11   8   9  13   7    5
  18E |   5  13  10  16   6   7  11   6    4 |   11  17  12  17  14   9  17  10   10
  19  |   6   7  10   9   5   4  10   5    3 |    6   9  10  10   9   7  11   7    5
  20  |   4   6  10   8   4   3  12   5    3 |    6   6   7   9   5   6  11   4    5
  21  |   2  11   9   8   5   5  19   8    3 |    5  10   9  10   8   7  18   5    5
  22  |   4   8  12   8   4   5  14  11    3 |    6   8   9  10   7   6   9   6    5
  23  |   5  12  11   7   5   4  16   6    3 |   10  14  15  13  13  13  13  11   11
  24  |   4   8   7   7   6   7  11   6    3 |    5   9  11  12   7   7  12   5    5
  25  |   3   9  16   8   6   5  15  10    4 |    7  10  11  11   8   6  16  10    5
  26E |   7  15  11  16   6   7  18   7    4 |    9  15  14  16  13  10  19  11    9
  27  |   5   6   8  11   4   5  13   5    3 |    6   9   9  11  10   7  11   6    6
  28E |   3  11  10  15   5   5  14   8    3 |    7  10  11  17   9   7  16   9    6
  29E |   5  11  10  12   5   5  11   7    3 |   11  11  10  15   9   8  16   9    9
  31E |   3   9  12  13   8   5  13   9    3 |    6  11  15  14   9   7  18   7    6
------|--------------------------------------|--------------------------------------
 RMS  |   5  10   9  11   6   5  13   7      |T   7  10  11  13   9   8  14   8    7
 WRMS |   4   9   9  11   5   5  13   6      |NE  7  10  10  11   9   8  12   7    7

Table 3.0846.3   GPS week: 0846   Day: 3   MJD: 50169.0

               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
------|--------------------------------------|--------------------------------------
   1E |   7  13  11  13  10   7  16  11    4 |    9  13  10  20   8  10  22  16    9
   2  |   4   7   9   7   5   4  10   5    2 |    4   8   9  10   6   7   9   6    5
   4  |   4   7   6   9   4   9  19   5    3 |    7  14  10  15   9   7  20   9    8
   5  |   5   4   7   9   3   4  10   7    2 |    6   7   8  13   7   7   9   7    6
   6E |  14   5   8  12   5   6  19  12    5 |   13  10   9  15   9   8  17  14    8
   7E |   4  10  10   7   7   6  19   6    3 |    6  14  11  14  10   8  16   9    8
   9  |   4   8   7   8   4   4  13   6    3 |    7   9  11  13   7   6  12   6    6
  12  | --- --- --- --- --- ---   4 ---    0 |  --- --- --- --- --- ---  12 ---   13
  14  |   4   7   8  10   3   4   8   6    3 |    6   6   8  13   8   9  10   9    6
  15  |   5   8   6   9   6   4  13   5    3 |    4  14  10  16  11   8  12  10    7
  16  |   4  11  11   8   4   5  12   9    3 |   15  12  17  13  15   9  13   9   13
  17  |   7   6   8  11   5   5  19   9    3 |    4  10   8  17   7   8  17  11    6
  18  |   7  10  17  12   3   8  11   9    4 |    8  11  19  16   8  10  15   8    8
  19  |   5   7   8  11   3   4  12   5    3 |    5  11   9  14   7   6  14   7    6
  20  |   5   5   5   8   4   4  16   5    3 |    5   6   7  11   7   8  15   9    6
  21  |   3   8  10   8   4   4  15   6    3 |    5   9   9  11   8   5  13   8    5
  22  |   5   6  11   9   5   4  14   8    3 |    5   7  10  11   8   6  13   6    5
  23  |   5   7   5   6   6   6  15   4    3 |   12  13  16  16  14  16   9  17   13
  24  |   4   9   8   8   6   7   7   5    3 |    7  16   9  17  10  10  15   9    7
  25  |   3   5   8   9   6   5  13   6    3 |    8   9  11  13  10   7  21   8    8
  26E |   6  15  14  20   6   5  16   5    4 |   13  15  16  17  16  11  22  12   13
  27  |   4   5   6  13   3   5   8   8    3 |    7  11   9  14   8   7  12   6    7
  28E |   4  15   9  15  10   6  16   8    4 |    5  12  10  18  12   8  16   8    6
  29  |   5   9  16  14   6   4  11   7    4 |    7   9  16  13   8   8  13   8    7
  31E |   5  12  11  13   9   5  12  12    4 |    6  14  15  15  10   6  14  10    7
------|--------------------------------------|--------------------------------------
 RMS  |   6   9  10  11   6   5  14   7      |T   7  11  11  14   9   8  14   9    8
 WRMS |   5   9   9  11   5   5  14   6      |NE  7  10  11  13   9   8  13   8    7

Table 3.0846.4   GPS week: 0846   Day: 4   MJD: 50170.0

               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
------|--------------------------------------|--------------------------------------
   1E |   6   9  14  12   5   7  17  10    4 |   12  14  15  19  14  15  21  20   13
   2  |   5   4   7   6   4   5  12   5    2 |    3   7  12   8   6   8  10   8    5
   4  |   7   8   8   8   5   8  20   6    4 |    4  10   9  12   6   6  11   9    5
   5  |   5   3   7   9   5   5  13   6    3 |    5   6   7  10   7   7  10   7    5
   6E |  15   7   8  13   7   6  13  10    4 |   10  11  10  14  10   8  15  12    8
   7E |   6   9   8   6   6   5  11   9    3 |    6  14  13  13   9   8  17  11    7
   9  |   4   5   7   9   3   3  11   5    2 |    6   7   7  10   5   5  14   5    5
  14  |   3   6   6   7   3   3  11   8    2 |    5   8   8  11   7   7  12   8    5
  15  |   5   7   8   8   5   5  12   6    3 |    3  11   7  11   6   7  11  10    4
  16  |   4   8  12   7   6   5  12   8    3 |    9  10  16  12  12   9  13  12    9
  17  |   5   6   8  11   3   6  10   8    3 |    4   8   9  13   6   7  11   8    5
  18  |   5   9   6  12   7   7  13   6    3 |    6  10  10  13   7   6  12   6    6
  19  |   7   5  10   9   4   5  10   4    3 |    4   8   8  12   6   5  14   8    6
  20  |   5   5   6   9   3   4  11   5    2 |    5   6   8  10   6   5  10   7    5
  21  |   4   6   8   8   4   6  15   8    3 |    4   8   9  11   7   6  17   7    5
  22  |   6   5  10   7   6   5  11   8    3 |    5   8  11   9   6   7   9   9    5
  23  |   6   8   7   7   5   8  15   6    3 |   10  11  12  14  12  13  11  13   10
  24  |   4   6   8   7   6   9  22   6    3 |    4  11   8  12   7   7  16   7    5
  25  |   5   6   8  11   5   5  20   6    3 |    4   9  10  12   6   5  21  10    6
  26  |   6   9  18  15   4   7  14   6    4 |    9  12  25  14  10  10  17   9   10
  27  |   4   4   6  11   4   5  13   5    3 |    4   8   9  13   5   5  11   7    4
  28E |   5  12  14  12   5   9  13   9    4 |    6  12  11  14   9   8  13   7    6
  29  |   5   9  11  10   3   6  10   6    3 |    6   7  13  12   7   8  11   8    7
  31E |   6   7  13  12   7   5  17  13    4 |    6  13  15  15  11   6  15   8    8
------|--------------------------------------|--------------------------------------
 RMS  |   6   7  10  10   5   6  14   7      |T   6   9  11  12   8   7  13   9    6
 WRMS |   5   7   9   9   4   6  14   7      |NE  5   8  11  11   7   7  13   8    6

Table 3.0846.5   GPS week: 0846   Day: 5   MJD: 50171.0

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

Table 3.0846.6   GPS week: 0846   Day: 6   MJD: 50172.0

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

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 4.0846   GPS week: 0846   MJD: 50166.0-50172.0

CENT| CLK EPO  |      BRUS      |      USUD      |      WILL      |
----|----------|----------------|----------------|----------------|
cod | cod 2255 |U  52   35   93 |U  51   33   94 |   39   28   68 |
emr | emr 2289 |   40   29   81 |   38   24   70 |U  27   14   40 |
esa | esa 2051 |  272  150  450 |U 226  145  418 |  229  131  296 |
gfz | gfz 1152 |   43   29   81 |U  42   26   79 |   24   15   39 |
igp | igp 2269 |  104   42  122 |   42   30   76 |   35   21   55 |
igs | igs 2340 |   42   28   81 |   39   26   75 |   26   14   44 |
jpl | jpl 2268 |U  41   27   77 |U  38   23   67 |   27   14   42 |

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 5.0846.0   GPS week: 0846   Day: 0   MJD: 50166.0

CENT| CLK EPO  |      BRUS      |      USUD      |      WILL      |
----|----------|----------------|----------------|----------------|
cod | cod 2304 |   53   36   76 |   50   31   87 |   36   24   65 |
emr | emr 2299 |   41   31   75 |   32   21   68 |   28   15   36 |
esa | esa 2015 |  182  120  268 |  218  187  515 |  117   93  295 |
gfz | gfz 1152 |   42   30   75 |   28   26   68 |   26   16   37 |
igp | igp 2278 |   47   33   66 |   34   28   77 |   34   22   59 |
igs | igs 2383 |   43   28   67 |   39   28   94 |   28   17   54 |
jpl | jpl 2270 |   36   26   68 |   30   22   62 |   28   14   37 |

Table 5.0846.1   GPS week: 0846   Day: 1   MJD: 50167.0

CENT| CLK EPO  |      BRUS      |      USUD      |      WILL      |
----|----------|----------------|----------------|----------------|
cod | cod 2234 |   48   38   88 |   47   37   93 |   39   28   72 |
emr | emr 2300 |   33   31   82 |   33   25   67 |   31   15   44 |
esa | esa 2084 |  140   61  172 |   87   68  215 |   54   38   94 |
gfz | gfz 1152 |   34   28   84 |   31   30   77 |   27   18   43 |
igp | igp 2219 |   79   54  154 |   43   38   79 |   37   24   64 |
igs | igs 2387 |   37   28   76 |   36   27   76 |   27   15   48 |
jpl | jpl 2178 |   44   26   76 |   34   25   64 |   30   14   47 |

Table 5.0846.2   GPS week: 0846   Day: 2   MJD: 50168.0

CENT| CLK EPO  |      BRUS      |      USUD      |      WILL      |
----|----------|----------------|----------------|----------------|
cod | cod 2331 |   48   35   87 |   46   28   90 |   43   25   61 |
emr | emr 2300 |   35   30   77 |   28   20   65 |   25   15   36 |
esa | esa 2074 |  383  289  782 |  387  240  700 |  457  250  552 |
gfz | gfz 1152 |   39   33   72 |   35   21   73 |   25   12   35 |
igp | igp 2304 |   41   35   85 |   27   23   64 |   25   14   42 |
igs | igs 2396 |   35   31   75 |   28   19   60 |   26   11   37 |
jpl | jpl 2280 |   35   31   71 |   28   18   61 |   26   14   37 |

Table 5.0846.3   GPS week: 0846   Day: 3   MJD: 50169.0

CENT| CLK EPO  |      BRUS      |      USUD      |      WILL      |
----|----------|----------------|----------------|----------------|
cod | cod 2198 |   56   32   99 |   63   33  111 |   35   28   56 |
emr | emr 2303 |   51   27   89 |   49   28   94 |   21   14   31 |
esa | esa 2025 |  422  127  444 |  111  115  222 |  117   62  123 |
gfz | gfz 1152 |   60   27   95 |   61   33  110 |   21   15   33 |
igp | igp 2291 |  241   62  210 |   51   32   94 |   26   17   41 |
igs | igs 2304 |   56   22   82 |   49   30   92 |   20   15   30 |
jpl | jpl 2286 |   52   26   84 |   48   28   91 |   22   15   34 |

Table 5.0846.4   GPS week: 0846   Day: 4   MJD: 50170.0

CENT| CLK EPO  |      BRUS      |      USUD      |      WILL      |
----|----------|----------------|----------------|----------------|
cod | cod 2228 |   54   31   93 |   55   33  100 |   40   30   75 |
emr | emr 2300 |   45   28   73 |   45   24   74 |   32   12   47 |
esa | esa 2078 |  136   68  225 |   97   71  198 |   93   55  129 |
gfz | gfz 1152 |   52   28   57 |   57   26   94 |   23   13   40 |
igp | igp 2303 |   48   31   76 |   44   25   74 |   35   15   57 |
igs | igs 2303 |   48   30   92 |   45   26   76 |   31   14   51 |
jpl | jpl 2287 |   45   27   70 |   46   22   75 |   34   15   54 |

Table 5.0846.5   GPS week: 0846   Day: 5   MJD: 50171.0

CENT| CLK EPO  |      BRUS      |      USUD      |      WILL      |
----|----------|----------------|----------------|----------------|
cod | cod 2245 |   52   36  106 |   45   33   86 |   38   28   68 |
emr | emr 2297 |   30   26   88 |   31   21   52 |   26   13   44 |
esa | esa 2023 |  211  134  490 |  231  129  425 |  252  149  308 |
gfz | gfz 1152 |   31   25   93 |   33   24   51 |   26   15   44 |
igp | igp 2205 |   46   28   85 |   39   31   69 |   40   26   63 |
igs | igs 2304 |   28   27   91 |   31   23   61 |   24   12   41 |
jpl | jpl 2287 |   28   26   85 |   31   19   52 |   27   13   46 |

Table 5.0846.6   GPS week: 0846   Day: 6   MJD: 50172.0

CENT| CLK EPO  |      BRUS      |      USUD      |      WILL      |
----|----------|----------------|----------------|----------------|
cod | cod 2245 |   53   36  101 |   50   38   90 |   43   33   78 |
emr | emr 2222 |   43   26   82 |   44   26   59 |   22   14   37 |
esa | esa 2061 |  275  134  466 |  275  125  393 |  239  138  294 |
gfz | gfz 1152 |   35   28   81 |   31   20   62 |   22   15   38 |
igp | igp 2280 |   56   42  107 |   52   31   73 |   45   23   51 |
igs | igs 2302 |   42   26   83 |   43   25   61 |   21   14   39 |
jpl | jpl 2288 |   41   26   80 |   43   25   59 |   23   15   38 |

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