Subject: [IGSREPORT-2721] Wk 0855 IGS Rapid Orbits
From: AC Coordinator / NRCan GSDivision
Date: Tue, 11 Jun 1996 7:31:10 PDT

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IGS Electronic Report    Tue Jun 11  7:31:10 PDT 1996      Message Number 2721
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Author: AC Coordinator / NRCan GSDivision
Subject: Wk 0855 IGS Rapid Orbits

Rapid Service IGS Orbit Combination - Week 0855   (May 26, 1996 - Jun 01, 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 (IGS08557.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:

 IGS08550-6.SP3  IGS GPS ephemeris files for days 0-6, week 0855 in SP3 format.
 IGS08557.ERP    Earth rotation parameters (ERP) associated with ephemerides.
 IGS08557.SUM    Complete report.

REMARKS on IGS Rapid Service Orbit Combination:

1. The centres used in the clock combination are COD, EMR, ESA, GFZ and JPL. The
   other centres are excluded because they either provide broadcast clocks (NGS)
   or clock corrections are not provided (SIO).  The clock information not
   used is still compared to combination for completeness.  
   The value of 999999.999999 microseconds, according to the sp3 format 
   convention, is used to signify that no clock solution is available and 
   therefore must not be used.

2. Only the GFZ "exact" clock corrections (one epoch out of two) are included
   in the combination and RMS computation (no "interpolation" values).

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

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

5. PRN20 was set unusable from day 2/wk854 (May 21) starting at 22:42
   until futher notice (ref. NANU 095-96142).

6. There was a maneuver of PRN04 on day 3 (May 29) (ref. NANU 098-96150).
   The ESA solution which modeled the maneuver is provided for that satellite
   on that day as the combined solution. An associated accuracy code of 0
   (unknown) was given since there was no redundancy. The ESA, IGP and the 
   combined solutions for PRN04 were excluded from the long arc evaluation 
   evaluation and the point positioning evaluation on day 3 due to unrealistic
   RMS caused by the maneuver.

   High combination orbit RMS for IGP on day 3 were caused by the maneuvered
   PRN04.  At the time of the Preliminary combination users were reminded to
   use it with caution.

7. Some orbit solutions were excluded from the combination because they were
   biasing the weighted average (generally indicated by long arc RMS).
   They were still used for statistics computation.  The following table
   lists the exclusions:

                     Day (Date)  | PRN  | Centres
                    -------------+------+--------
                     3 (May 29)  |  16  | SIO

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

          Day (Date) |   TIME   |  PRN  | Centres  | Reason
         ------------+----------+-------+------------------------------
          3 (May 29) | 00:00:00 |  19   |   ALL    | Modelling problem
          4 (May 30) | 00:00:00 |  14   |   ALL    | Modelling problem
          4 (May 30) | 00:00:00 |  17   |   ALL    | Modelling problem
          4 (May 30) | 00:00:00 |  04   |   ALL    | Maneuver

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

ORBIT COMBINATION AND EVALUATION STATISTICS:

For a complete description of tables and statistics, please refer to the report
posted on CDDIS (IGS08557.SUM).

Table 1: Week 0855 summary.                       (May 26, 1996 - Jun 01, 1996)

Table 1.0855.a   GPS week: 0855   MJD: 50229.0-50235.0

         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  70 | .00  .01  .01  -.24  -.12  -.45   .1  .06  .05 |    2.4   -9.3    1.6
        | .00  .00  .00   .10   .08   .25   .1           |    7.7    9.2
emr  31 | .00 -.01 -.01   .55   .06   .48   .1  .11  .11 |  100.0   25.0     .8
        | .00  .01  .00   .11   .11   .23   .2           |   76.9    6.2
esa  51 | .00  .00 -.01  -.28   .02   .02   .0  .12  .09 |  -11.7   12.3    2.7
        | .00  .00  .01   .16   .14   .21   .1           |   18.3   15.3
gfz  50 | .01 -.01  .00  -.03   .16  -.12  -.3  .08  .07 |  100.0   24.9     .7
        | .00  .00  .00   .06   .09   .08   .1           |   77.2    6.1
igp  n/a| .00  .00  .00   .06  -.03   .20  -.1  .29  .05 |    2.1   -4.7     .8
        | .00  .01  .01   .18   .08   .15   .1           |     .6    2.2
jpl  37 |-.01  .02  .00  -.05   .09   .21   .2  .06  .06 |  100.0   25.8     .8
        | .00  .00  .00   .07   .08   .09   .0           |   77.0    6.3
ngs  49 | .00 -.05 -.01  -.09  -.29  -.21  -.2  .14  .14 |    4.0  -12.0   78.2
        | .01  .01  .01   .21   .15   .24   .2           |    5.4    7.3
sio  114|-.01  .01 -.01   .29  -.04   .21   .0  .12  .12 |     .0     .0     .0
        | .00  .00  .01   .20   .16   .46   .1           |     .0     .0

Table 1.0855.b   GPS week : 0855   MJD: 50229.0-50235.0

         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  |   2   2   3   3   3   3   3 |
   2E |   3   3   3   4   3   3   4 |
   3  |   3   3   3   3   3   3   3 |
   4E |   4   5   4   0   7   4   4 | Maneuver on day 3.
   5  |   3   3   3   3   3   3   3 |
   6  |   3   2   3   3   3   3   3 |
   7  |   2   2   3   3   3   3   2 |
   9  |   3   3   3   3   3   3   4 |
  14  |   3   3   3   3   4   3   3 |
  15E |   3   4   4   5   5   4   3 |
  16  |   2   3   3   3   4   4   3 |
  17E |   5   4   4   5   5   5   4 |
  18  |   2   3   3   3   3   3   3 |
  19  |   4   4   3   7   4   3   3 |
  21  |   2   3   3   4   3   3   3 |
  22E |   2   2   3   3   3   3   4 |
  23  |   3   3   3   3   3   4   4 |
  24E |   5   5   4   7   4   3   4 |
  25  |   3   2   3   3   3   3   4 |
  26  |   3   3   2   4   3   3   4 |
  27  |   3   3   3   5   3   3   3 |
  28  |   3   3   3   3   3   3   3 |
  29  |   3   3   3   3   3   3   3 |
  31  |   3   2   2   4   3   3   3 |

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 2.0855.0   GPS week: 0855   Day: 0   MJD: 50229.0

CENT STA|  DX   DY   DZ    RX    RY    RZ  SCL  RMS WRMS |   TOFT  TDRFT    RMS
--------|------------------------------------------------|---------------------
cod  69 | .00  .01  .01  -.29  -.03  -.17   .1  .05  .05 |    9.1  -24.9    1.6
emr  31 | .00 -.02 -.01   .73   .11   .41   .0  .11  .11 |  218.5   18.5     .9
esa  51 | .00  .00 -.02   .00   .11  -.17  -.1  .10  .09 |   -1.1   11.7    3.3
gfz  50 | .01 -.01  .00  -.09   .08  -.06  -.3  .07  .07 |  219.8   18.6     .9
igp  n/a| .01  .00  .00   .26   .10   .40  -.2  .06  .06 |    2.3   -5.2     .9
jpl  37 | .00  .01  .01  -.07   .07   .23   .2  .05  .05 |  219.4   19.1     .9
ngs  50 | .00 -.04 -.03  -.44  -.41  -.52   .0  .13  .13 |    9.3  -22.6   77.7
sio  113|-.02  .01 -.01   .47  -.13  -.01   .0  .06  .06 |     .0     .0     .0

Table 2.0855.1   GPS week: 0855   Day: 1   MJD: 50230.0

CENT STA|  DX   DY   DZ    RX    RY    RZ  SCL  RMS WRMS |   TOFT  TDRFT    RMS
--------|------------------------------------------------|---------------------
cod  69 | .00  .01  .01  -.25  -.03  -.31   .2  .05  .05 |    4.1   -4.9    1.4
emr  31 | .00 -.01 -.01   .60   .14   .22   .3  .11  .11 |  253.9   33.1     .8
esa  51 | .00  .00 -.01  -.40   .00  -.02   .0  .12  .09 |    8.9   27.6    2.7
gfz  50 | .00 -.02 -.01  -.08   .16  -.13  -.4  .08  .08 |  255.2   33.4     .7
igp  n/a| .00 -.01 -.01   .08  -.05   .05  -.1  .05  .05 |    2.8   -6.4     .8
jpl  37 | .00  .02  .00  -.07   .09   .01   .2  .05  .05 |  254.5   34.4     .8
ngs  50 |-.01 -.06  .00   .21  -.11  -.02  -.2  .12  .12 |    6.3  -17.6   76.8
sio  112|-.01  .02 -.01   .30  -.24   .48   .1  .07  .07 |     .0     .0     .0

Table 2.0855.2   GPS week: 0855   Day: 2   MJD: 50231.0

CENT STA|  DX   DY   DZ    RX    RY    RZ  SCL  RMS WRMS |   TOFT  TDRFT    RMS
--------|------------------------------------------------|---------------------
cod  70 | .01  .01  .01  -.35  -.25  -.24   .1  .05  .05 |    8.6   -6.8    1.5
emr  31 | .00 -.02 -.01   .51   .22   .50   .2  .10  .11 |  303.6   18.3     .9
esa  51 | .00 -.01  .00  -.43   .22  -.28   .1  .12  .10 |   -7.9   -8.2    3.6
gfz  49 | .01 -.02  .00   .02   .12  -.12  -.4  .07  .07 |  304.9   18.5     .8
igp  n/a| .00  .01 -.01  -.27  -.04   .18   .1  .06  .06 |    2.9   -4.8     .9
jpl  37 |-.01  .02  .01  -.06   .23   .21   .2  .05  .05 |  304.4   19.3     .9
ngs  48 |-.01 -.04 -.03  -.15  -.31  -.51  -.3  .14  .14 |    8.8  -14.5   78.5
sio  114|-.01  .01 -.01   .34  -.10   .06   .2  .06  .06 |     .0     .0     .0

Table 2.0855.3   GPS week: 0855   Day: 3   MJD: 50232.0

CENT STA|  DX   DY   DZ    RX    RY    RZ  SCL  RMS WRMS |   TOFT  TDRFT    RMS
--------|------------------------------------------------|---------------------
cod  70 | .00  .01  .00  -.37  -.19  -.32   .1  .07  .05 |    4.9  -11.2    1.8
emr  31 | .00  .00 -.01   .56   .08   .90   .1  .13  .13 |  330.2   29.0     .7
esa  52 | .00  .00 -.01  -.39   .03   .07   .0  .13  .09 |  -16.7   -5.2    2.2
gfz  51 | .01 -.01  .00   .00   .22  -.08  -.2  .09  .08 |  331.8   28.6     .6
igp  n/a| .00  .00  .00  -.11   .05   .13  -.1  .76  .05 |    1.6   -4.0     .7
jpl  37 | .00  .02  .00   .05   .06   .31   .2  .07  .07 |  331.2   29.6     .7
ngs  48 | .00 -.04  .00   .00  -.13  -.30  -.5  .14  .14 |    4.3   -6.6   78.9
sio  118|-.01  .01  .00   .53  -.08  -.56  -.1  .28  .28 |     .0     .0     .0

Table 2.0855.4   GPS week: 0855   Day: 4   MJD: 50233.0

CENT STA|  DX   DY   DZ    RX    RY    RZ  SCL  RMS WRMS |   TOFT  TDRFT    RMS
--------|------------------------------------------------|---------------------
cod  70 | .00  .00  .00  -.12  -.14  -.62   .2  .07  .05 |    3.4  -13.6    1.5
emr  31 | .00 -.01  .00   .43  -.01   .57  -.2  .12  .11 |  368.7   20.5     .8
esa  53 | .01  .00  .00  -.37  -.20   .00  -.1  .11  .09 |  -20.0   13.8    2.2
gfz  51 | .01 -.01 -.01   .00   .23  -.12  -.2  .07  .08 |  370.2   20.9     .7
igp  n/a| .01 -.01  .00   .15  -.02   .22   .0  .06  .05 |    1.8   -2.6     .8
jpl  37 | .00  .02  .01  -.19   .12   .21   .2  .06  .06 |  369.7   21.5     .7
ngs  50 |-.01 -.06 -.02  -.12  -.26  -.15   .0  .14  .14 |    5.0  -14.8   77.9
sio  115|-.01  .01  .00   .24  -.07   .25  -.1  .06  .06 |     .0     .0     .0

Table 2.0855.5   GPS week: 0855   Day: 5   MJD: 50234.0

CENT STA|  DX   DY   DZ    RX    RY    RZ  SCL  RMS WRMS |   TOFT  TDRFT    RMS
--------|------------------------------------------------|---------------------
cod  71 | .01  .00  .01  -.15  -.11  -.63   .2  .05  .05 |     .5   -9.4    1.7
emr  30 | .00 -.02  .00   .43  -.10   .25   .2  .10  .09 |  402.4   24.0     .6
esa  52 |-.01 -.01  .00  -.22  -.10   .33   .1  .12  .10 |    1.4   12.7    2.2
gfz  51 | .01 -.02  .00  -.12   .27  -.02  -.4  .08  .07 |  404.4   23.4     .5
igp  n/a| .00  .00  .00   .13  -.14   .38   .0  .05  .04 |    1.3   -1.9     .6
jpl  37 |-.01  .02  .00   .00   .07   .25   .1  .06  .06 |  403.4   24.5     .5
ngs  49 | .01 -.04  .00  -.21  -.53   .10  -.1  .14  .14 |     .8   -5.0   78.6
sio  110|-.01  .01 -.02   .23   .11   .33   .1  .07  .07 |     .0     .0     .0

Table 2.0855.6   GPS week: 0855   Day: 6   MJD: 50235.0

CENT STA|  DX   DY   DZ    RX    RY    RZ  SCL  RMS WRMS |   TOFT  TDRFT    RMS
--------|------------------------------------------------|---------------------
cod  70 | .01  .01  .01  -.19  -.07  -.83   .0  .05  .05 |  -13.7    5.5    1.5
emr  30 | .00 -.01  .00   .62  -.02   .51   .2  .09  .09 |  429.3   31.6     .7
esa  49 | .00 -.01 -.01  -.16   .05   .21   .2  .11  .10 |  -46.2   33.5    2.5
gfz  51 | .01 -.01 -.01   .02   .03  -.28  -.3  .08  .08 |  431.2   31.1     .7
igp  n/a| .00  .01 -.01   .17  -.10   .02  -.1  .06  .06 |    2.4   -8.2     .8
jpl  37 |-.01  .02  .00  -.05  -.05   .22   .1  .06  .06 |  430.3   32.2     .7
ngs  50 | .01 -.06  .00   .08  -.31  -.05  -.1  .14  .14 |   -6.3   -2.9   78.8
sio  116|-.01  .02 -.01  -.07   .23   .94  -.1  .09  .09 |     .0     .0     .0

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

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

         Units: cm.

Table 3.0855.0   GPS week: 0855   Day: 0   MJD: 50229.0

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

Table 3.0855.1   GPS week: 0855   Day: 1   MJD: 50230.0

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

Table 3.0855.2   GPS week: 0855   Day: 2   MJD: 50231.0

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

Table 3.0855.3   GPS week: 0855   Day: 3   MJD: 50232.0

               Weighted Average                Orbit Dynamics (7 days)
 PRN  | cod emr esa gfz igp jpl ngs sio  IGS |  cod emr esa gfz igp jpl ngs sio  IGS
------|--------------------------------------|--------------------------------------
   1  |   4  12  10   3   4   5   7   7    3 |    6  12  12   8   6   6  10  10    6
   2  |   8  13   8  10   4   8  19   9    4 |    8  17   9  18   9   5  18  16    9
   3  |   6   8   8   7   5   8  15  10    3 |    9   8  10  12   8  10  16   9    8
   4E | --- ---   2 --- 369 --- --- ---    0 |  --- ---   0 ---   0 --- --- ---  ---
   5  |   4   8  13   6   4   5  14  12    3 |    4  10  12   8   6   3  16  12    5
   6  |   2  10   5   8   3   6  11  11    3 |    5   9   8   9   5   5  11  11    5
   7  |   5  12   7   7   4   4  10   5    3 |    4   9   9  12   7   5  12  11    6
   9  |   4  10  12   5  10   5  13   8    3 |    4  11  13   7   7   5  14   6    5
  14  |   7  12  11   5   4   7   9   8    3 |    9   9  10  12   8  13  12  10    9
  15E |   8  28  16   7   5   7  10   7    5 |   14  20  20  18  16  15  18  19   15
  16  |   5  12   7   5   5   5  12 125    3 |    6  11  10   9   7   8  15  86    6
  17E |  12  13  14  14   5   8  18  11    5 |   13  13  12  15   8  10  13  12    9
  18  |   6  12   8   7   7   5  14   6    3 |    8  13  12  13   8   9  21  13   10
  19  |  13  19  26  19   5  18  17  17    7 |    7  16  22  22  15  17  22  20   13
  21  |   6  16  11  11   6   6   8   7    4 |    6  12   8  16   9   8   9   7    8
  22  |   5  11   9   6   6   4  10  10    3 |    4  13   7   9   6   5  11   6    5
  23  |   5  13   8   6   4   5  15   6    3 |   12  15  15  14  15  14  15  15   12
  24E |   7  13  29  15   6   8  30  19    7 |   16  19  17  18  13  15  28  26   15
  25  |   4   8   7   6   4   6   9   6    3 |    7   8   7   9   5   5  12   6    5
  26  |   5   9  10   8   6   5  12  17    4 |    5  10  11   8   8   6  13  13    5
  27  |   6  16  17  11  10  12  13  12    5 |    7  16  18  19   9   7  13  17    8
  28  |   6   8   9   7   4   6  11  10    3 |    3   9   9   8   6   4  14  13    5
  29  |   4  10  11   6   6   5  20   7    3 |    4  11   6   9   8   6  20  11    6
  31  |   8   7  11  11   9   4  14   7    4 |    5   9   9  15   7   6  16  11    7
------|--------------------------------------|--------------------------------------
 RMS  |   7  13  13   9  76   7  14  28      |T   8  12  12  13   9   9  15  22    8
 WRMS |   5  13   9   8   5   7  14  28      |NE  6  11  11  12   8   8  14  22    7

Table 3.0855.4   GPS week: 0855   Day: 4   MJD: 50233.0

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

Table 3.0855.5   GPS week: 0855   Day: 5   MJD: 50234.0

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

Table 3.0855.6   GPS week: 0855   Day: 6   MJD: 50235.0

               Weighted Average                Orbit Dynamics (7 days)
 PRN  | cod emr esa gfz igp jpl ngs sio  IGS |  cod emr esa gfz igp jpl ngs sio  IGS
------|--------------------------------------|--------------------------------------
   1  |   4   7  13   4   5   6  13  13    3 |    7  12  12  13   9   9  13  15    9
   2E |   6   8  11   9  10   6  19  12    4 |    7   9  14  13  16   9  18  14   10
   3  |   5   6   8   7   5   6  12   5    3 |    8   7  11  11  11   7  15   9    8
   4E |   6   8  17   8   3   7  14   9    4 |   17  14  13  13  11  16  17  16   12
   5  |   6   5  16   5   5   5  13   7    3 |    4  10  20   8   8   6  14  14    7
   6  |   4   8   8   7   7   5  13   7    3 |    3   7  12   6   8   4  13  13    7
   7  |   4   6   8   7   5   4   9   6    2 |    3   6   9  10   9   5  11  11    7
   9  |   5  10  10   9   8   7  10  12    4 |    4  11  13   8   8   8  14   8    7
  14  |   6  10  10   9   5   7   9   5    3 |    5   9  10   6   7   5  11  11    6
  15E |   4   9  15   7   6   6  11   9    3 |   23  25  28  26  23  24  26  25   23
  16  |   3  10  11   6   4   6  18   9    3 |    7  10  11   8  10   8   9  16    7
  17E |   4  15  14  12   7   7  20  10    4 |    6  16  10  14  12  10  14  12    8
  18  |   4   8   7   7   5   6   9   6    3 |    8   9   9  11   9   7  12  16    8
  19  |   4   9   9   8   5   9  14   7    3 |    3  11  10   9   7   8  13  12    5
  21  |   6  10   7  11   5   7  11  10    3 |    5  13   7  13  12   8  11  15    7
  22E |   5   8  18   9   9   6   9   7    4 |    6   8  16   8   7   8  12  10    7
  23  |   6  11  10   9   9   7  15   7    4 |   15  18  18  21  22  18  12  18   16
  24E |   5  13  10  13   6   6  14   8    4 |   16  20  22  20  20  17  26  17   19
  25  |   6   9  10   9   5   9  10  13    4 |    7  12  10  11   8   4  12  18    8
  26  |   6   7  10   7   8   6   9  18    4 |    5  11  11  10  10   7   9  21    8
  27  |   3   8  10   7   5   7  14   7    3 |    5   9   9   8   6   7  14  15    5
  28  |   4   7  10   7   4   4  12   6    3 |    3   7  10   6   8   5  13  11    7
  29  |   3   9   7   7   3   5  23   8    3 |    5   8   6   9   8   6  20  17    6
  31  |   4   7  13   6   3   6  15   6    3 |    4   6  10   8   8   7  15  10    7
------|--------------------------------------|--------------------------------------
 RMS  |   5   9  11   8   6   6  14   9      |T   8  12  13  12  11  10  14  14    9
 WRMS |   5   9  10   8   6   6  14   9      |NE  6  10  11  10   9   7  13  14    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 4.0855   GPS week: 0855   MJD: 50229.0-50235.0

CENT| CLK EPO  |      BRUS      |      USUD      |      WILL      |
----|----------|----------------|----------------|----------------|
cod | cod 2288 |U  50   34   86 |U  49   37   96 |   43   28   71 |
emr | emr 2282 |   40   28   71 |   30   27   63 |U  30   18   40 |
esa | esa 2011 |   92   59  143 |U  97   77  205 |  109   55  163 |
gfz | gfz 1145 |   41   26   75 |U  29   33   67 |   29   18   41 |
igp | igp 2282 |   39   28   72 |   32   28   65 |   31   20   44 |
igs | igs 2290 |   41   27   74 |   34   30   71 |   36   19   49 |
jpl | jpl 2260 |   38   25   70 |U  28   27   63 |   28   16   37 |

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 5.0855.0   GPS week: 0855   Day: 0   MJD: 50229.0

CENT| CLK EPO  |      BRUS      |      USUD      |      WILL      |
----|----------|----------------|----------------|----------------|
cod | cod 2301 |   42   30   78 |   49   40   86 |   44   25   65 |
emr | emr 2293 |   38   24   68 |   36   27   57 |   28   14   41 |
esa | esa 2099 |   80   79  150 |   92   84  208 |  148   55  236 |
gfz | gfz 1152 |   31   19   57 |   37   27   57 |   26   12   44 |
igp | igp 2300 |   36   23   69 |   39   28   64 |   31   15   45 |
igs | igs 2304 |   34   27   76 |   38   35   66 |   47   17   56 |
jpl | jpl 2279 |   37   23   66 |   34   27   60 |   28   12   37 |

Table 5.0855.1   GPS week: 0855   Day: 1   MJD: 50230.0

CENT| CLK EPO  |      BRUS      |      USUD      |      WILL      |
----|----------|----------------|----------------|----------------|
cod | cod 2301 |   51   34   75 |   44   35   84 |   41   27   76 |
emr | emr 2290 |   40   25   64 |   24   22   53 |   35   20   41 |
esa | esa 2100 |   64   61  108 |   73   47  166 |   63   32   81 |
gfz | gfz 1152 |   42   27   52 |   25   22   50 |   37   18   38 |
igp | igp 2297 |   41   26   66 |   27   23   51 |   36   22   46 |
igs | igs 2304 |   39   27   62 |   31   26   59 |   33   17   46 |
jpl | jpl 2288 |   41   26   62 |   25   23   53 |   32   18   39 |

Table 5.0855.2   GPS week: 0855   Day: 2   MJD: 50231.0

CENT| CLK EPO  |      BRUS      |      USUD      |      WILL      |
----|----------|----------------|----------------|----------------|
cod | cod 2302 |   49   35   85 |   45   31  104 |   36   23   66 |
emr | emr 2277 |   35   26   66 |   30   32   61 |   28   15   35 |
esa | esa 1805 |   95   74  142 |  170  126  344 |  170   89  217 |
gfz | gfz 1152 |   26   23   64 |   28   40   59 |   27   13   35 |
igp | igp 2283 |   34   27   67 |   31   34   66 |   28   17   41 |
igs | igs 2304 |   37   27   65 |   37   36   88 |   38   20   53 |
jpl | jpl 2288 |   32   24   65 |   28   31   61 |   26   12   34 |

Table 5.0855.3   GPS week: 0855   Day: 3   MJD: 50232.0

CENT| CLK EPO  |      BRUS      |      USUD      |      WILL      |
----|----------|----------------|----------------|----------------|
cod | cod 2206 |   54   38   94 |   56   40   98 |   47   31   70 |
emr | emr 2205 |   46   31   72 |   34   28   72 |   26   21   39 |
esa | esa 1996 |  119   57  177 |   80   68  189 |   80   48  152 |
gfz | gfz 1104 |   48   28   73 |   32   33   79 |   28   19   31 |
igp | igp 2184 |   44   33   71 |   33   28   76 |   30   26   40 |
igs | igs 2208 |   51   28   84 |   37   28   75 |   31   19   41 |
jpl | jpl 2196 |   44   27   73 |   32   26   71 |   27   19   35 |

Table 5.0855.4   GPS week: 0855   Day: 4   MJD: 50233.0

CENT| CLK EPO  |      BRUS      |      USUD      |      WILL      |
----|----------|----------------|----------------|----------------|
cod | cod 2302 |   61   32  100 |   44   34  101 |   40   28   60 |
emr | emr 2303 |   43   30   88 |   27   26   67 |   28   18   41 |
esa | esa 1893 |   61   30   96 |   66   51  112 |   88   59  123 |
gfz | gfz 1152 |   50   31  113 |   28   32   78 |   31   21   43 |
igp | igp 2303 |   42   30   89 |   28   26   65 |   28   20   44 |
igs | igs 2303 |   44   25   86 |   33   27   73 |   32   20   46 |
jpl | jpl 2195 |   41   26   90 |   28   27   69 |   30   15   34 |

Table 5.0855.5   GPS week: 0855   Day: 5   MJD: 50234.0

CENT| CLK EPO  |      BRUS      |      USUD      |      WILL      |
----|----------|----------------|----------------|----------------|
cod | cod 2298 |   44   31   81 |   56   41  115 |   48   32   81 |
emr | emr 2300 |   39   26   64 |   28   34   72 |   27   22   37 |
esa | esa 2086 |  115   50  159 |   91   78  186 |   69   38  138 |
gfz | gfz 1152 |   44   25   74 |   30   48   89 |   27   26   37 |
igp | igp 2303 |   40   27   63 |   27   35   74 |   27   22   42 |
igs | igs 2304 |   38   25   69 |   28   35   76 |   28   22   46 |
jpl | jpl 2287 |   36   26   62 |   27   35   72 |   24   20   35 |

Table 5.0855.6   GPS week: 0855   Day: 6   MJD: 50235.0

CENT| CLK EPO  |      BRUS      |      USUD      |      WILL      |
----|----------|----------------|----------------|----------------|
cod | cod 2304 |   48   37   84 |   50   36   80 |   46   30   79 |
emr | emr 2304 |   38   30   73 |   26   19   53 |   33   17   44 |
esa | esa 2099 |   89   45  152 |   61   53  149 |   95   44  136 |
gfz | gfz 1152 |   42   28   74 |   19   23   39 |   28   13   53 |
igp | igp 2304 |   38   28   73 |   35   20   53 |   31   19   50 |
igs | igs 2304 |   39   28   75 |   30   22   54 |   39   20   52 |
jpl | jpl 2288 |   36   26   66 |   24   20   49 |   28   17   45 |

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