Subject: [IGSREPORT-2439] Wk 0840 IGS Rapid Orbits
From: AC Coordinator / NRCan GSDivision
Date: Mon, 26 Feb 1996 11:13:36 PST

******************************************************************************
IGS Electronic Report    Mon Feb 26 11:13:36 PST 1996      Message Number 2439
******************************************************************************

Author: AC Coordinator / NRCan GSDivision
Subject: Wk 0840 IGS Rapid Orbits

Rapid Service IGS Orbit Combination - Week 0840   (Feb 11, 1996 - Feb 17, 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 (IGS08407.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:

 IGS08400-6.SP3  IGS GPS ephemeris files for days 0-6, week 0840 in SP3 format.
 IGS08407.ERP    Earth rotation parameters (ERP) associated with ephemerides.
 IGS08407.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. 
   Clock jumps on PRN16 were responsible for higher clock RMS for NGS on 
   days 5-6 (ref. NANU 037-96052;

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

            Day (Date)  |   PRN    | Centres | Shifts/Outliers
           -------------+----------+---------+------------------
            5 (Feb 16)  | 17,25,27 |   ESA   |  up to ~45 nsec

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

          Day (Date) |   TIME   | PRN | Centres  | Reason
         ------------+----------+-----+-------------------------------------
          2 (Feb 13) | 06:00:00 | 23  |   ALL    | Modeling problems

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.

7. 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.

ORBIT COMBINATION AND EVALUATION STATISTICS:

For a complete description of tables and statistics, please refer to the report
posted on CDDIS (IGS08407.SUM).

Table 1: Week 0840 summary.                       (Feb 11, 1996 - Feb 17, 1996)

Table 1.0840.a   GPS week: 0840   MJD: 50124.0-50130.0

         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  66 | .00  .02 -.01  -.25   .03   .04   .1  .06  .05 |    -.8    3.4    1.7
        | .00  .00  .00   .10   .09   .10   .1           |    6.3    7.9
emr  29 | .01 -.03  .00   .25  -.01   .36  -.2  .08  .08 |  749.5   27.8     .9
        | .00  .00  .00   .07   .10   .13   .1           |   51.3   10.0
esa  54 | .01 -.02 -.01   .16   .27  -.10   .1  .13  .11 |    -.8   -6.8    6.3
        | .01  .01  .01   .11   .18   .11   .1           |   11.9   15.5
gfz  45 |-.04 -.02  .00   .26  -.10  -.36  -.3  .11  .11 |  752.2   26.8    6.5
        | .00  .00  .00   .07   .13   .15   .1           |   52.7   10.1
igp  n/a| .01 -.01 -.01   .77  -.42   .11  -.1  .09  .08 |    -.4     .6    1.1
        | .01  .01  .01   .32   .33   .10   .2           |    1.4    2.5
jpl  37 | .01  .02  .00  -.17   .01   .08   .2  .07  .07 | -150.8   13.9     .9
        | .00  .01  .00   .10   .06   .07   .1           |  672.9   20.0
ngs  44 | .01 -.03  .03  -.04   .42  -.10  -.2  .15  .15 |   28.7  -59.6 1994.1
        | .01  .01  .01   .21   .29   .24   .2           |   69.7  142.8
sio  113|-.01  .03  .01   .14  -.23  -.14   .3  .09  .07 |     .0     .0     .0
        | .00  .01  .00   .09   .10   .21   .2           |     .0     .0

Table 1.0840.b   GPS week : 0840   MJD: 50124.0-50130.0

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

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

Table 2.0840.0   GPS week: 0840   Day: 0   MJD: 50124.0

CENT STA|  DX   DY   DZ    RX    RY    RZ  SCL  RMS WRMS |   TOFT  TDRFT    RMS
--------|------------------------------------------------|---------------------
cod  67 | .00  .02 -.01  -.20   .04  -.14   .1  .06  .05 |   -6.1    3.6    1.6
emr  29 | .01 -.03  .00   .20  -.10   .58  -.2  .08  .08 |  671.4   36.8     .6
esa  55 | .02 -.03 -.02   .18   .28   .04   .3  .12  .11 |  -13.8  -17.2   15.3
gfz  45 |-.03 -.03  .00   .33  -.10  -.46  -.4  .11  .11 |  673.6   35.3    3.4
igp  n/a| .00 -.02 -.03   .88  -.46  -.08   .2  .11  .10 |   -3.5    4.2    1.1
jpl  37 | .01  .02  .00  -.25   .05   .09   .1  .06  .06 | -404.4   23.9     .5
ngs  43 | .01 -.05  .03   .07   .36  -.12  -.4  .14  .14 |  -10.1   11.0   77.4
sio  115| .00  .03  .01   .12  -.27  -.05   .1  .08  .07 |     .0     .0     .0

Table 2.0840.1   GPS week: 0840   Day: 1   MJD: 50125.0

CENT STA|  DX   DY   DZ    RX    RY    RZ  SCL  RMS WRMS |   TOFT  TDRFT    RMS
--------|------------------------------------------------|---------------------
cod  67 | .00  .02 -.01  -.20  -.01   .11   .1  .07  .05 |   -2.1    7.4    1.4
emr  29 | .01 -.03  .00   .17   .04   .32  -.3  .07  .07 |  704.5   20.5    1.2
esa  55 | .00 -.02 -.02   .31   .59  -.08   .2  .12  .11 |   -2.1  -20.9    2.5
gfz  45 |-.04 -.02  .00   .35  -.15  -.34  -.2  .10  .10 |  704.3   22.4    9.3
igp  n/a| .01  .00 -.03  1.12  -.29   .04   .0  .11  .09 |     .1   -1.2    1.3
jpl  37 | .01  .02 -.01  -.28  -.03   .15   .2  .06  .06 | -384.4    5.6    1.2
ngs  44 | .01 -.03  .02  -.46   .33  -.07  -.2  .14  .14 |    8.4  -10.2   77.4
sio  114| .00  .03  .01   .16  -.26  -.44   .3  .08  .07 |     .0     .0     .0

Table 2.0840.2   GPS week: 0840   Day: 2   MJD: 50126.0

CENT STA|  DX   DY   DZ    RX    RY    RZ  SCL  RMS WRMS |   TOFT  TDRFT    RMS
--------|------------------------------------------------|---------------------
cod  67 | .00  .02 -.01  -.26   .01  -.02   .0  .06  .05 |    6.9  -11.9    1.6
emr  31 | .01 -.04  .01   .29   .15   .23  -.2  .08  .08 |  731.3   16.0     .8
esa  53 | .01 -.02 -.01   .12   .04   .03   .1  .11  .09 |   -5.1  -18.7    1.6
gfz  46 |-.04 -.02  .00   .29   .00  -.56  -.2  .11  .11 |  733.1   15.5    5.7
igp  n/a| .01  .00 -.01  1.15  -.50   .19   .0  .08  .07 |    -.1    3.2    1.0
jpl  37 | .00  .03  .00  -.17   .08   .19   .2  .06  .06 | -373.0   -1.8     .8
ngs  45 | .01 -.03  .03   .11   .18  -.30  -.1  .14  .15 |    1.9   -9.7   76.7
sio  114|-.01  .03  .01   .01  -.21  -.08   .1  .07  .07 |     .0     .0     .0

Table 2.0840.3   GPS week: 0840   Day: 3   MJD: 50127.0

CENT STA|  DX   DY   DZ    RX    RY    RZ  SCL  RMS WRMS |   TOFT  TDRFT    RMS
--------|------------------------------------------------|---------------------
cod  67 | .01  .02 -.02  -.27   .08   .07   .1  .06  .05 |   -1.1    6.2    1.9
emr  29 | .01 -.03  .00   .39  -.03   .34  -.2  .09  .09 |  753.0   24.6    1.0
esa  55 | .00 -.01  .01   .03   .17  -.20  -.1  .13  .11 |    -.7   -6.7    2.0
gfz  45 |-.04 -.02  .01   .22   .10  -.41  -.2  .11  .11 |  754.9   24.0    6.1
igp  n/a| .00 -.01  .00   .88  -.44   .17  -.1  .07  .06 |     .8    -.8    1.1
jpl  37 | .00  .02 -.01  -.16  -.02  -.01   .1  .07  .07 | -751.4   -2.5    1.0
ngs  44 | .01 -.03  .03  -.11   .46  -.30  -.1  .14  .14 |    3.7  -11.5   78.6
sio  113| .00  .02  .01   .13  -.24   .20   .3  .07  .07 |     .0     .0     .0

Table 2.0840.4   GPS week: 0840   Day: 4   MJD: 50128.0

CENT STA|  DX   DY   DZ    RX    RY    RZ  SCL  RMS WRMS |   TOFT  TDRFT    RMS
--------|------------------------------------------------|---------------------
cod  67 | .00  .02 -.02  -.13  -.10   .13  -.1  .06  .06 |    6.9    -.9    1.5
emr  29 | .00 -.03  .00   .23   .08   .31  -.1  .07  .07 |  779.2   19.3     .9
esa  56 | .01 -.01  .00   .14   .21  -.22   .0  .13  .12 |   19.5  -13.7    2.2
gfz  45 |-.03 -.02  .00   .18  -.12  -.40  -.1  .10  .10 |  784.8   15.1    6.3
igp  n/a| .01 -.01  .00   .44  -.48   .13  -.2  .07  .06 |     .4    2.4    1.0
jpl  37 | .01  .02  .00  -.19   .08   .12   .1  .07  .07 | -751.9   -6.7     .9
ngs  46 |-.01 -.02  .04   .06   .25  -.25   .0  .12  .11 |    3.5   -3.6   77.6
sio  113|-.01  .05  .01   .04  -.32  -.04   .6  .14  .09 |     .0     .0     .0

Table 2.0840.5   GPS week: 0840   Day: 5   MJD: 50129.0

CENT STA|  DX   DY   DZ    RX    RY    RZ  SCL  RMS WRMS |   TOFT  TDRFT    RMS
--------|------------------------------------------------|---------------------
cod  67 | .01  .02 -.01  -.27   .03   .12   .0  .06  .05 |  -10.2   12.4    2.1
emr  28 | .01 -.04  .01   .23  -.10   .49  -.1  .09  .09 |  786.1   40.6     .9
esa  52 | .01 -.03 -.01   .04   .41  -.21   .1  .13  .12 |  -12.9   15.9    4.5
gfz  43 |-.03 -.03  .00   .16  -.11  -.27  -.4  .11  .11 |  788.7   39.9    7.8
igp  n/a| .02 -.01 -.02   .55  -.94   .21  -.1  .09  .08 |    -.7   -1.7    1.1
jpl  37 | .01  .03  .00  -.17   .00   .03   .3  .07  .07 |  787.2   41.2    1.0
ngs  42 | .01 -.03  .02   .12  1.06  -.01  -.4  .17  .17 |  186.1 -382.9 5272.0
sio  110| .00  .02  .02   .22  -.32  -.26   .3  .07  .07 |     .0     .0     .0

Table 2.0840.6   GPS week: 0840   Day: 6   MJD: 50130.0

CENT STA|  DX   DY   DZ    RX    RY    RZ  SCL  RMS WRMS |   TOFT  TDRFT    RMS
--------|------------------------------------------------|---------------------
cod  63 | .00  .02 -.01  -.45   .19   .02   .1  .06  .05 |    -.1    7.3    1.8
emr  28 | .01 -.03  .00   .23  -.11   .25  -.5  .10  .09 |  820.9   36.9     .7
esa  55 | .00 -.01  .00   .29   .22  -.10   .0  .13  .12 |    9.2   13.8    1.6
gfz  45 |-.04 -.03  .00   .29  -.31  -.09  -.3  .11  .10 |  825.7   35.6    5.5
igp  n/a| .01 -.03  .00   .37   .19   .12  -.3  .10  .09 |     .1   -1.7     .9
jpl  37 | .01  .02 -.01   .05  -.08   .02   .2  .07  .07 |  822.1   37.3     .7
ngs  44 | .01 -.03  .04  -.10   .30   .38  -.1  .16  .16 |    7.4  -10.3   99.9
sio  112|-.01  .03  .01   .27  -.02  -.29   .5  .09  .08 |     .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 3.0840.0   GPS week: 0840   Day: 0   MJD: 50124.0

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

Table 3.0840.1   GPS week: 0840   Day: 1   MJD: 50125.0

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

Table 3.0840.2   GPS week: 0840   Day: 2   MJD: 50126.0

               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   6   7   9   9   5   9   5    2 |    5  13  13  12  12   8  16   8    7
   2  |   7   6  14  10   9   4  10   4    3 |    4  13  14  16  19   6  15   6    7
   4  |   6   5  11  11   5   7  10   7    3 |    6   9  15  13  10   7  12   7    6
   5  |   3   6   8   9   9   4  10   8    2 |    3  11   9  11  13   5  14   6    4
   6  |   4   9  10  12   7   8  14   9    3 |    6  13  13  17  14   8  19  11    8
   7E |   6  13   8  13   8   8  10   4    3 |    6  19  12  23  18   8  17   9    9
   9  |   3   5   9   9   5   4  11   9    2 |    6  11   9  11   8   7  16   9    7
  12  |   4 --- --- ---   9 ---  13   6    5 |    6 --- --- ---  17 ---  15   8    6
  14  |   6   7  12  15   5   7  11   7    3 |    6  11  16  16  13   8  14   8    7
  15  |   4   6  12  18   6   5  25   6    4 |    3  14  12  12  11   7  23   7    5
  16  |   7   7  14  11  12   7  18   7    4 |    8  12  20  17  19   8  24   9    8
  17  |   4   8   9   9   5   6  11   6    3 |    4  12  13  11  11   8  14   6    5
  18  |   4   6   7  10   3   4  11   7    2 |    4  11  11  12  10   6  17   9    6
  19  |   3   5   7   7   3   4  11   7    2 |    6   9   8   8  10   7  16   7    6
  20  |   3   7   9   7  10   7  13   6    3 |    3  12  11  10  13   9  17   4    5
  21  |   5  10  14   9   9   6  16   7    3 |    6  14  14  14  15   6  18   7    6
  22  |   6   7  15   6  12   4  16   7    3 |    6  13  14  10  20   7  19   7    7
  23  |  14  14  13  12   8   7  20   8    5 |   31  32  30  32  33  39  27  42   33
  24  |   4   9  10  11   6   7  10   7    3 |    4   9  14  15  11   5  14   8    5
  25  |   4   8   9   7   9   5  10   6    2 |    5  11  10  10  13   8  14   7    6
  26  |   4   6   8  10   7   5  15   7    3 |    7  14  12  11  16   9  13   9    7
  27  |   3   5   9  12   3   6  14   8    3 |    6   8   8   6  10   8  14   6    6
  28E |   4   9   7   9   8   6  15   7    3 |    9  19  15  16  21  10  23  11   11
  29  |   5   8   8  11   4   5  11   8    3 |    5  10  12  13  10   7  14   9    6
  31E |   4  10   7  11   7   5  10   5    3 |    5  18  10  13  16   8  18   8    7
------|--------------------------------------|--------------------------------------
 RMS  |   5   8  10  11   7   6  14   7      |T   8  14  13  14  15  10  17  11    9
 WRMS |   5   8   9  11   7   6  14   7      |NE  8  13  14  14  14  11  17  11    9

Table 3.0840.3   GPS week: 0840   Day: 3   MJD: 50127.0

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

Table 3.0840.4   GPS week: 0840   Day: 4   MJD: 50128.0

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

Table 3.0840.5   GPS week: 0840   Day: 5   MJD: 50129.0

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

Table 3.0840.6   GPS week: 0840   Day: 6   MJD: 50130.0

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

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 4.0840   GPS week: 0840   MJD: 50124.0-50130.0

CENT| CLK EPO  |      BRUS      |      USUD      |      WILL      |
----|----------|----------------|----------------|----------------|
cod | cod 2199 |U  60   36   97 |U  51   37   98 |   51   33   77 |
emr | emr 2292 |   46   31   71 |   36   25   63 |U  37   20   44 |
esa | esa 2043 |  287  153  433 |U 226  148  400 |  247  139  291 |
gfz | gfz 1152 |  237  124  331 |U 212  195  604 |  366  234  269 |
igp | igp 2263 |   55   34   79 |   36   27   66 |   41   24   53 |
igs | igs 2389 |   58   31   78 |   38   27   72 |   41   23   52 |
jpl | jpl 2290 |U  44   30   72 |U  34   22   61 |   35   20   44 |

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 5.0840.0   GPS week: 0840   Day: 0   MJD: 50124.0

CENT| CLK EPO  |      BRUS      |      USUD      |      WILL      |
----|----------|----------------|----------------|----------------|
cod | cod 2239 |   63   33   98 |   55   48  102 |   53   33   75 |
emr | emr 2301 |   45   26   67 |   49   36   75 |   35   19   38 |
esa | esa 2120 |  633  362  999 |  572  363  999 |  635  356  733 |
gfz | gfz 1152 |  154   81  334 |  166   98  261 |  134   76  146 |
igp | igp 2271 |   45   27   73 |   51   38   81 |   40   22   54 |
igs | igs 2392 |   40   25   69 |   49   37   76 |   31   17   40 |
jpl | jpl 2304 |   41   26   65 |   46   33   71 |   31   18   37 |

Table 5.0840.1   GPS week: 0840   Day: 1   MJD: 50125.0

CENT| CLK EPO  |      BRUS      |      USUD      |      WILL      |
----|----------|----------------|----------------|----------------|
cod | cod 2239 |   43   34   96 |   43   33   89 |   54   28   83 |
emr | emr 2301 |   37   30   81 |   32   24   66 |   37   19   42 |
esa | esa 1932 |  134   41  129 |   69   44  135 |   83   50  146 |
gfz | gfz 1152 |  256  120  317 |  171  105  325 |  137  112  171 |
igp | igp 2301 |   41   32   81 |   28   19   57 |   36   21   42 |
igs | igs 2396 |   48   28   82 |   33   25   67 |   46   23   68 |
jpl | jpl 2304 |   37   30   81 |   28   20   64 |   38   20   45 |

Table 5.0840.2   GPS week: 0840   Day: 2   MJD: 50126.0

CENT| CLK EPO  |      BRUS      |      USUD      |      WILL      |
----|----------|----------------|----------------|----------------|
cod | cod 2245 |   69   36   90 |   43   33   99 |   48   32   69 |
emr | emr 2280 |   56   38   70 |   31   22   52 |   33   22   40 |
esa | esa 2106 |  138   52  132 |   44   45  114 |   41   23   69 |
gfz | gfz 1152 |  274  150  360 |  131   72  206 |  162   89  200 |
igp | igp 2249 |   93   42   90 |   36   21   69 |   33   23   42 |
igs | igs 2393 |   64   35   75 |   28   19   56 |   32   21   46 |
jpl | jpl 2294 |   55   34   70 |   28   20   50 |   35   22   42 |

Table 5.0840.3   GPS week: 0840   Day: 3   MJD: 50127.0

CENT| CLK EPO  |      BRUS      |      USUD      |      WILL      |
----|----------|----------------|----------------|----------------|
cod | cod 2257 |   54   39   85 |   49   35   98 |   51   32   62 |
emr | emr 2301 |   44   34   65 |   35   24   60 |   45   19   44 |
esa | esa 2120 |  179   62  178 |   84   45  146 |   71   34   99 |
gfz | gfz 1152 |  242  107  297 |  192  349  999 |  779  341  437 |
igp | igp 2304 |   48   37   68 |   36   28   66 |   50   22   56 |
igs | igs 2396 |   71   38   77 |   41   34  100 |   61   28   56 |
jpl | jpl 2294 |   39   31   69 |   33   21   59 |   45   19   46 |

Table 5.0840.4   GPS week: 0840   Day: 4   MJD: 50128.0

CENT| CLK EPO  |      BRUS      |      USUD      |      WILL      |
----|----------|----------------|----------------|----------------|
cod | cod 2221 |   63   32   80 |   47   40   89 |   48   33   75 |
emr | emr 2302 |   53   26   70 |   33   25   72 |   40   19   50 |
esa | esa 2105 |  176   76  224 |   83   55  170 |   60   38   94 |
gfz | gfz 1152 |  237  138  318 |  180   98  285 |  135  100  171 |
igp | igp 2303 |   55   31   77 |   33   30   72 |   46   24   56 |
igs | igs 2392 |   74   26   78 |   41   28   74 |   40   22   53 |
jpl | jpl 2292 |   54   27   73 |   33   22   67 |   40   20   51 |

Table 5.0840.5   GPS week: 0840   Day: 5   MJD: 50129.0

CENT| CLK EPO  |      BRUS      |      USUD      |      WILL      |
----|----------|----------------|----------------|----------------|
cod | cod 2003 |   60   40  118 |   66   40  112 |   54   40   96 |
emr | emr 2256 |   40   23   69 |   37   23   56 |   32   25   43 |
esa | esa 1853 |  260  124  420 |   93  106  173 |   63   48   97 |
gfz | gfz 1152 |  184  115  316 |  365  309  999 |  466  461  398 |
igp | igp 2195 |   43   27   82 |   36   25   59 |   42   30   56 |
igs | igs 2361 |   52   26   76 |   40   26   64 |   38   28   54 |
jpl | jpl 2254 |   37   25   69 |   35   23   56 |   25   21   40 |

Table 5.0840.6   GPS week: 0840   Day: 6   MJD: 50130.0

CENT| CLK EPO  |      BRUS      |      USUD      |      WILL      |
----|----------|----------------|----------------|----------------|
cod | cod 2188 |   63   40  108 |   50   30   97 |   52   34   72 |
emr | emr 2303 |   42   36   73 |   32   16   52 |   33   18   47 |
esa | esa 2066 |   98   56  147 |   41   40   90 |   36   19   49 |
gfz | gfz 1152 |  282  144  369 |  199  119  509 |  181  139  193 |
igp | igp 2216 |   42   36   77 |   31   22   54 |   41   23   60 |
igs | igs 2395 |   47   38   85 |   31   16   56 |   33   17   45 |
jpl | jpl 2286 |   40   34   74 |   34   12   54 |   27   16   43 |

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