Subject: [IGSREPORT-2667] Wk 0852 IGS Rapid Orbits
From: AC Coordinator / NRCan GSDivision
Date: Tue, 21 May 1996 12:18:35 PDT

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IGS Electronic Report    Tue May 21 12:18:35 PDT 1996      Message Number 2667
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Author: AC Coordinator / NRCan GSDivision
Subject: Wk 0852 IGS Rapid Orbits

Rapid Service IGS Orbit Combination - Week 0852   (May 05, 1996 - May 11, 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 (IGS08527.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:

 IGS08520-6.SP3  IGS GPS ephemeris files for days 0-6, week 0852 in SP3 format.
 IGS08527.ERP    Earth rotation parameters (ERP) associated with ephemerides.
 IGS08527.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. PRN18 had maintenance performed from day 2 (May 07) at 4:06 until
   day 4 (May 09) at 17:37 (ref. NANU 089-96130). The large clock RMS seen for
   NGS on day 2 are due to broadcast clocks not accounting for a clock jump
   of about 10 usec detected by all centres for this satellite.

6. PRN20 was set unusable from day 5/wk0852 (May 10) starting at 15:18 
   (ref. NANU 091-96131) until day 1/wk0854 (May 20) at 7:36
   (ref. NANU 094-96141) which explains the low tracking on day 5 and the
   absence of solutions on day 6.

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  
                    -------------+------+--------
                     5 (May 10)  | 20   | 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
         ------------+----------+-----+------------------------------
          6 (May 11) | 00:00:00 | 19  |   ALL    | Modelling problem 

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

ORBIT COMBINATION AND EVALUATION STATISTICS:

For a complete description of tables and statistics, please refer to the report
posted on CDDIS (IGS08527.SUM).

Table 1: Week 0852 summary.                       (May 05, 1996 - May 11, 1996)

Table 1.0852.a   GPS week: 0852   MJD: 50208.0-50214.0

         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  -.27   .20  -.18   .0  .06  .06 |   -6.4    2.2    1.6
        | .00  .00  .00   .09   .11   .30   .1           |    4.8   12.0
emr  29 |-.01 -.02 -.01   .48  -.15   .37   .1  .12  .12 | 1702.5   24.4     .8
        | .00  .00  .01   .12   .09   .20   .1           | 1447.5    6.6
esa  52 | .00  .00  .00  -.17   .13  -.08   .1  .11  .09 |   -4.3    9.8    2.2
        | .00  .01  .00   .17   .11   .28   .1           |   24.7   26.7
gfz  46 | .00 -.02  .00   .06   .19  -.11  -.2  .08  .08 | 1703.7   24.5     .7
        | .01  .00  .00   .10   .10   .20   .1           | 1447.5    6.3
igp  n/a| .00 -.01  .00   .07   .01   .13  -.1  .07  .06 |     .0     .1     .9
        | .01  .01  .01   .15   .12   .21   .1           |    1.1    2.4
jpl  37 | .00  .02  .00  -.07   .10   .19   .2  .07  .07 | -797.2   11.0     .7
        | .01  .00  .01   .06   .08   .11   .0           | 1512.7    8.8
ngs  48 | .00 -.03 -.01  -.04  -.40   .00  -.2  .15  .15 |    1.5   -6.1  213.4
        | .01  .01  .01   .24   .11   .12   .1           |   11.7   18.1
sio  112|-.01  .02 -.01   .24  -.37  -.15  -.1  .12  .12 |     .0     .0     .0
        | .00  .00  .00   .04   .09   .17   .1           |     .0     .0

Table 1.0852.b   GPS week : 0852   MJD: 50208.0-50214.0

         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   3   4   3   3   3 |
   2  |   3   3   3   3   3   3   3 |
   3  |   4   4   4   4   3   3   3 |
   4E |   2   3   3   3   3   4   4 |
   5  |   3   3   3   3   3   3   3 |
   6  |   3   3   3   4   3   3   4 |
   7  |   2   3   4   3   3   3   3 |
   9E |   4   4   4   4   4   3   3 |
  14  |   3   3   3   3   3   3   3 |
  15E |   4   3   4   6   4   4   3 |
  16  |   3   3   4   4   3   3   3 |
  17  |   5   4   4   5   5   4   4 |
  18  |   3   5   4   4   3   4   3 |
  19E |   5   4   5   5   4   6   6 |
  20  |   3   3   3   3   3  19 --- | Low and no tracking on day 5 and 6 resp.
  21  |   3   3   3   3   3   3   3 |
  22  |   3   3   3   3   3   3   3 |
  23  |   4   3   4   4   4   3   3 |
  24E |   2   3   4   3   4   4   4 |
  25E |   3   4   5   4   4   4   4 |
  26  |   3   3   4   4   4   3   3 |
  27E |   4   4   4   5   4   4   4 |
  28  |   3   3   3   3   3   3   3 |
  29  |   3   3   3   4   3   3   3 |
  31  |   3   3   3   3   3   4   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 2.0852.0   GPS week: 0852   Day: 0   MJD: 50208.0

CENT STA|  DX   DY   DZ    RX    RY    RZ  SCL  RMS WRMS |   TOFT  TDRFT    RMS
--------|------------------------------------------------|---------------------
cod  71 | .00  .01  .01  -.29   .09  -.33   .0  .05  .05 |   -3.7     .1    1.5
emr  28 |-.01 -.02  .00   .32  -.13   .12   .1  .12  .12 | 2495.4   20.8     .8
esa  51 | .00  .01  .00  -.13   .32   .32   .2  .10  .09 |   25.3  -23.3    2.7
gfz  45 | .01 -.03 -.01   .01   .17  -.29  -.3  .09  .08 | 2497.3   21.1     .7
igp  n/a| .00  .00 -.01   .10  -.10  -.18  -.3  .07  .07 |     .1    -.5     .8
jpl  37 | .00  .02  .00   .00   .16   .12   .1  .06  .06 | 2496.2   21.9     .7
ngs  49 | .01 -.05  .00   .34  -.45   .17  -.1  .12  .13 |   -1.1    1.8   75.9
sio  110|-.01  .02 -.01   .21  -.25   .12   .0  .07  .07 |     .0     .0     .0

Table 2.0852.1   GPS week: 0852   Day: 1   MJD: 50209.0

CENT STA|  DX   DY   DZ    RX    RY    RZ  SCL  RMS WRMS |   TOFT  TDRFT    RMS
--------|------------------------------------------------|---------------------
cod  72 | .00  .01  .01  -.34   .09  -.49  -.1  .06  .05 |  -12.6    -.9    1.5
emr  29 |-.01 -.02  .00   .58  -.04   .45  -.1  .11  .11 | 2516.2   27.0     .7
esa  51 | .00  .01  .00  -.42   .03   .26   .0  .10  .09 |    3.5   -3.5    1.9
gfz  46 | .00 -.03 -.01   .25   .22  -.32  -.3  .10  .10 | 2517.1   27.1     .7
igp  n/a| .00 -.02  .01   .23  -.07   .23  -.1  .05  .05 |     .2   -2.4     .7
jpl  37 | .01  .02  .01  -.03   .14   .37   .2  .06  .06 |-1557.9    7.2     .7
ngs  48 |-.01 -.03 -.02   .03  -.45  -.05  -.4  .15  .15 |  -12.7   11.6   78.5
sio  113|-.02  .02 -.01   .24  -.28  -.07  -.1  .07  .07 |     .0     .0     .0

Table 2.0852.2   GPS week: 0852   Day: 2   MJD: 50210.0

CENT STA|  DX   DY   DZ    RX    RY    RZ  SCL  RMS WRMS |   TOFT  TDRFT    RMS
--------|------------------------------------------------|---------------------
cod  72 | .01  .02  .01  -.33   .15  -.42   .0  .06  .06 |  -11.0   21.6    1.5
emr  29 |-.01 -.02  .00   .40  -.35   .35  -.1  .11  .11 | 2548.9   26.1     .7
esa  54 | .00 -.01  .00  -.16   .01  -.18  -.1  .11  .08 |  -26.8    -.7    2.1
gfz  47 | .01 -.03  .00   .04   .21   .00  -.2  .09  .09 | 2550.1   26.0     .6
igp  n/a|-.01 -.02  .00  -.06  -.08   .10   .0  .08  .07 |   -1.8    3.2     .8
jpl  37 | .00  .01  .00  -.04   .14   .29   .2  .06  .06 |-1545.1    6.3     .7
ngs  48 |-.01 -.03 -.02   .14  -.23  -.02  -.3  .15  .15 |   25.2  -42.4  529.0
sio  112|-.01  .01 -.01   .27  -.44  -.10  -.2  .07  .07 |     .0     .0     .0

Table 2.0852.3   GPS week: 0852   Day: 3   MJD: 50211.0

CENT STA|  DX   DY   DZ    RX    RY    RZ  SCL  RMS WRMS |   TOFT  TDRFT    RMS
--------|------------------------------------------------|---------------------
cod  68 | .01  .01  .01  -.29   .22  -.36   .2  .07  .06 |  -10.3   13.7    1.4
emr  28 |-.01 -.02 -.02   .61  -.16   .65   .2  .13  .13 | 2574.4   35.0     .8
esa  51 | .00  .00  .00  -.19   .18  -.28   .1  .11  .09 |  -25.4   22.9    2.2
gfz  48 | .00 -.02  .00   .09   .08   .26  -.3  .07  .07 | 2575.2   34.7     .6
igp  n/a| .00  .00  .00   .11  -.02   .15  -.1  .05  .05 |    -.2     .1     .7
jpl  37 | .00  .02  .00  -.08   .17   .12   .3  .09  .10 |-1541.6   16.5     .7
ngs  48 | .02 -.03  .00  -.03  -.35   .16  -.3  .14  .13 |     .1   -1.4   92.9
sio  116|-.02  .03 -.01   .29  -.40  -.28  -.1  .08  .08 |     .0     .0     .0

Table 2.0852.4   GPS week: 0852   Day: 4   MJD: 50212.0

CENT STA|  DX   DY   DZ    RX    RY    RZ  SCL  RMS WRMS |   TOFT  TDRFT    RMS
--------|------------------------------------------------|---------------------
cod  69 | .01  .02  .01  -.25   .25  -.02   .0  .06  .06 |   -3.7     .6    1.6
emr  30 |-.01 -.01 -.01   .62  -.11   .57   .1  .11  .10 | 2614.0   28.2     .8
esa  52 | .00  .00  .00  -.14   .06  -.36   .2  .10  .09 |   31.8   -7.2    1.9
gfz  47 |-.02 -.02  .00   .11   .09  -.23  -.1  .08  .08 | 2615.0   27.9     .7
igp  n/a| .00  .00  .00   .15   .25  -.09   .0  .06  .05 |     .6   -1.3     .8
jpl  37 | .00  .01  .01  -.06   .04   .18   .2  .06  .06 |-1522.7    8.0     .8
ngs  48 | .00 -.03 -.01  -.38  -.30  -.11  -.3  .14  .14 |   -4.7    6.7   77.7
sio  113|-.01  .02 -.01   .23  -.34  -.09   .0  .08  .08 |     .0     .0     .0

Table 2.0852.5   GPS week: 0852   Day: 5   MJD: 50213.0

CENT STA|  DX   DY   DZ    RX    RY    RZ  SCL  RMS WRMS |   TOFT  TDRFT    RMS
--------|------------------------------------------------|---------------------
cod  69 | .00  .02  .01  -.29   .38   .28  -.1  .08  .07 |   -3.1   -5.9    1.7
emr  30 | .00 -.02 -.01   .38  -.16   .32   .2  .13  .14 | -430.3   15.6     .9
esa  52 | .00  .00  .01   .14   .10  -.32   .1  .14  .10 |  -23.3   57.4    2.5
gfz  43 | .00 -.02  .00   .01   .16  -.05   .0  .07  .07 | -429.0   16.0     .8
igp  n/a| .00 -.01 -.01   .14   .08   .41   .0  .09  .07 |    1.6   -2.1    1.3
jpl  37 | .00  .02  .01  -.20   .03   .22   .2  .10  .07 |-1508.7   -2.9     .9
ngs  47 | .01 -.04  .00  -.12  -.43  -.13  -.1  .17  .17 |    -.1   -4.2   79.0
sio  109|-.01  .02 -.01   .18  -.50  -.40   .0  .27  .27 |     .0     .0     .0

Table 2.0852.6   GPS week: 0852   Day: 6   MJD: 50214.0

CENT STA|  DX   DY   DZ    RX    RY    RZ  SCL  RMS WRMS |   TOFT  TDRFT    RMS
--------|------------------------------------------------|---------------------
cod  66 | .00  .02  .01  -.08   .26   .10   .0  .06  .06 |    -.4  -14.1    1.6
emr  30 | .00 -.01 -.01   .42  -.15   .13   .1  .12  .11 | -401.0   18.3     .8
esa  52 | .00  .00  .01  -.28   .19   .00  -.1  .11  .10 |  -15.0   23.2    2.3
gfz  46 | .00 -.02  .00  -.08   .38  -.16  -.2  .09  .08 | -399.8   18.9     .7
igp  n/a| .01 -.02  .02  -.21   .00   .29  -.3  .09  .07 |    -.8    3.5     .9
jpl  37 | .00  .02  .01  -.10  -.01   .04   .2  .05  .05 | -400.4   19.6     .7
ngs  48 | .01 -.03 -.03  -.24  -.57  -.01  -.3  .15  .15 |    3.5  -15.0   78.1
sio  108|-.01  .01  .00   .26  -.40  -.22   .1  .06  .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 3.0852.0   GPS week: 0852   Day: 0   MJD: 50208.0

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

Table 3.0852.1   GPS week: 0852   Day: 1   MJD: 50209.0

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

Table 3.0852.2   GPS week: 0852   Day: 2   MJD: 50210.0

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

Table 3.0852.3   GPS week: 0852   Day: 3   MJD: 50211.0

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

Table 3.0852.4   GPS week: 0852   Day: 4   MJD: 50212.0

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

Table 3.0852.5   GPS week: 0852   Day: 5   MJD: 50213.0

               Weighted Average                Orbit Dynamics (7 days)
 PRN  | cod emr esa gfz igp jpl ngs sio  IGS |  cod emr esa gfz igp jpl ngs sio  IGS
------|--------------------------------------|--------------------------------------
   1  |   4   7  10   6   5   3  12   8    3 |    4   9  10   8   7   3   9   6    3
   2  |   7   8  10   6   3   5  11   6    3 |    6   8  11   9  12   8  14   7    6
   3  |   8  10  15   5   6   7  12   7    3 |    8  15  13  12  10  11  17  10    9
   4E |   6  10  12   9   5   6  18   5    4 |    9  11  18  12  14   9  20   7    9
   5  |   7   6   7   6   8   3  19   6    3 |    4  10  12   9  10   6  17   4    6
   6  |   5   8   8   7  10   3  20   7    3 |    7   7   9  11  11   4  21   4    5
   7  |   7  12   8   5   6   6  12   5    3 |    5   8  12   9   7   5  10   4    4
   9E |   6   7  10   4   7   7  23   6    3 |    7  13  18  11  10   8  24   7    7
  14  |   6   7   8   6   5   4   9   8    3 |    4   6  13   8   6   5  10   7    4
  15E |   9  16  14   8  15   6  16   8    4 |    7  12  20  11  14   9  16   9    8
  16  |   5  12  11   7  10   4  21   6    3 |   18  14  16  17  24  16  24  16   16
  17  |   7  19   6   7   5   7  23   7    4 |    5  14  13  12   5   5  14   6    6
  18  |  10  18  14   5   8   4  10   6    4 |    7  14  23  11   8   5  11   6    7
  19E |  11  31  19  10  11  10  22  10    6 |   16  10  13  12  14  19  22   8   10
  20  |  22   7  46 ---  20  41 --- 133   19 |   18  13  27 ---  12  31 ---  84   16
  21  |   5  11   9   8   4   6  11   6    3 |    7   9  11   9   9   7  14   8    7
  22  |   5  12   8   7   5   4  14   7    3 |    4  12   9   8   7   4  10   6    4
  23  |   8  16  10   7   4   6  14   4    3 |    5  11  12  11   8   8  14   8    7
  24E |   8  18  12   7   5   5  24   5    4 |    7  11  18   9  10   7  27   6    7
  25E |   9  14  14   6  12   6  22   7    4 |   12  11   9  12  13   7  19   7    8
  26  |   8  13  10   7   6   5  11   8    3 |    8  20  20  14  15   8  14  12   10
  27E |   8  11  12   6  10   6  31   7    4 |   10  15  11  16  13  12  29   9   10
  28  |   6   8   5   5   8   5  14   5    3 |    4  12   9   9   6   5  15   5    5
  29  |   7  11   5   5   8   3  10   6    3 |    8  12  18  14  10   7  13   9    9
  31  |   8  13  19   5   6   6  10   5    4 |    7  15  13   8   6   6  10   5    4
------|--------------------------------------|--------------------------------------
 RMS  |   8  13  14   7   9  10  17  27      |T   8  12  15  11  11  10  17  18    8
 WRMS |   7  14  10   7   7   7  17  27      |NE  8  12  14  10  10  10  14  21    8

Table 3.0852.6   GPS week: 0852   Day: 6   MJD: 50214.0

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

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 4.0852   GPS week: 0852   MJD: 50208.0-50214.0

CENT| CLK EPO  |      BRUS      |      USUD      |      WILL      |
----|----------|----------------|----------------|----------------|
cod | cod 2332 |U  57   35   92 |U  50   38   94 |   38   26   64 |
emr | emr 2357 |   42   27   78 |   31   26   69 |U  25   17   40 |
esa | esa 1779 |   96   55  143 |U  57   60  150 |  103   49  168 |
gfz | gfz 1015 |   43   27   77 |U  35   26   63 |   22   18   39 |
igp | igp 2238 |   43   30   79 |   35   29   69 |   27   21   50 |
igs | igs 2379 |   46   31   82 |   32   28   74 |   34   19   53 |
jpl | jpl 2019 |U  40   27   77 |U  30   26   67 |   23   17   39 |

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 5.0852.0   GPS week: 0852   Day: 0   MJD: 50208.0

CENT| CLK EPO  |      BRUS      |      USUD      |      WILL      |
----|----------|----------------|----------------|----------------|
cod | cod 2392 |   47   35   81 |   56   45   88 |   36   27   64 |
emr | emr 2392 |   41   28   63 |   46   33   72 |   24   14   42 |
esa | esa 2007 |  114   49  152 |   63   62  153 |   85   37  130 |
gfz | gfz 1200 |   39   28   57 |   65   34   80 |   18   14   43 |
igp | igp 2353 |   40   28   66 |   47   33   66 |   24   15   53 |
igs | igs 2400 |   44   27   67 |   46   36   76 |   28   15   48 |
jpl | jpl 2382 |   39   26   63 |   48   32   68 |   21   13   42 |

Table 5.0852.1   GPS week: 0852   Day: 1   MJD: 50209.0

CENT| CLK EPO  |      BRUS      |      USUD      |      WILL      |
----|----------|----------------|----------------|----------------|
cod | cod 2338 |   52   35   80 |   48   36   92 |   38   23   62 |
emr | emr 2400 |   32   28   64 |   25   26   79 |   28   16   38 |
esa | esa 2094 |  102   49  182 |   66   73  212 |   91   54  166 |
gfz | gfz 1200 |   28   27   60 |   21   19   41 |   23   17   38 |
igp | igp 2394 |   34   30   61 |   26   26   77 |   28   17   45 |
igs | igs 2400 |   41   28   74 |   28   30   88 |   36   18   45 |
jpl | jpl 2384 |   30   28   62 |   25   25   77 |   27   15   37 |

Table 5.0852.2   GPS week: 0852   Day: 2   MJD: 50210.0

CENT| CLK EPO  |      BRUS      |      USUD      |      WILL      |
----|----------|----------------|----------------|----------------|
cod | cod 2231 |   61   38   93 |   45   35   97 |   36   26   56 |
emr | emr 2379 |   42   28   83 |   33   26   84 |   25   16   37 |
esa | esa 2094 |   83   56  145 |   57   53  146 |  133   59  244 |
gfz | gfz 1200 |   49   33   95 |   33   21   77 |   19   15   33 |
igp | igp 1958 |   42   31   86 |   38   28   80 |   28   20   52 |
igs | igs 2385 |   46   33   90 |   33   26   88 |   37   19   64 |
jpl | jpl 2368 |   39   28   80 |   32   23   78 |   21   15   34 |

Table 5.0852.3   GPS week: 0852   Day: 3   MJD: 50211.0

CENT| CLK EPO  |      BRUS      |      USUD      |      WILL      |
----|----------|----------------|----------------|----------------|
cod | cod 2388 |   59   34   84 |   39   37   99 |   36   24   71 |
emr | emr 2396 |   38   23   78 |   24   27   71 |   22   19   34 |
esa | esa 2106 |  114   77  131 |   59   79  176 |   75   42  130 |
gfz | gfz 1200 |   41   27   83 |   26   26   74 |   20   20   34 |
igp | igp 2399 |   40   26   76 |   24   27   74 |   24   19   41 |
igs | igs 2399 |   44   31   75 |   26   28   76 |   25   17   45 |
jpl | jpl 2376 |   38   24   68 |   22   24   67 |   21   18   34 |

Table 5.0852.4   GPS week: 0852   Day: 4   MJD: 50212.0

CENT| CLK EPO  |      BRUS      |      USUD      |      WILL      |
----|----------|----------------|----------------|----------------|
cod | cod 2382 |   54   39  124 |   43   32   75 |   34   23   63 |
emr | emr 2394 |   51   33  112 |   28   26   56 |   27   16   54 |
esa | esa    0 |   98   55  136 |   57   54  114 |  141   60  195 |
gfz | gfz    0 |   62   28   96 |   25   28   44 |   25   17   41 |
igp | igp 2330 |   51   34  109 |   26   26   53 |   25   16   50 |
igs | igs 2399 |   56   36  107 |   28   28   63 |   43   20   74 |
jpl | jpl    0 |   49   34  107 |   25   25   52 |   24   15   50 |

Table 5.0852.5   GPS week: 0852   Day: 5   MJD: 50213.0

CENT| CLK EPO  |      BRUS      |      USUD      |      WILL      |
----|----------|----------------|----------------|----------------|
cod | cod 2298 |   60   32   82 |   56   42  102 |   48   27   71 |
emr | emr 2236 |   36   23   54 |   30   17   55 |   22   14   36 |
esa | esa 2042 |   80   51  126 |   48   50  117 |    0    0    0 |
gfz | gfz 1152 |   39   25   70 |   30   20   56 |    0    0    0 |
igp | igp 2206 |   45   34   66 |   38   27   61 |   28   22   52 |
igs | igs 2365 |   37   30   74 |   31   21   61 |   35   24   49 |
jpl | jpl 2340 |   38   26   71 |    0    0    0 |    0    0    0 |

Table 5.0852.6   GPS week: 0852   Day: 6   MJD: 50214.0

CENT| CLK EPO  |      BRUS      |      USUD      |      WILL      |
----|----------|----------------|----------------|----------------|
cod | cod 2295 |   65   31   95 |   57   38  102 |   36   30   62 |
emr | emr 2304 |   48   26   81 |   25   25   61 |   27   24   36 |
esa | esa 2110 |   65   44  115 |   44   43  100 |   69   35   99 |
gfz | gfz 1152 |   35   21   64 |   23   28   59 |   28   25   43 |
igp | igp 2024 |   46   23   76 |   38   32   65 |   32   31   54 |
igs | igs 2304 |   50   28   83 |   28   25   62 |   30   22   41 |
jpl | jpl 2280 |   42   24   78 |   22   24   59 |   26   22   34 |

[Mailed From: Francois Lahaye <[email-masked]>]