Subject: [IGSREPORT-2997] Wk 0870 IGS Final Orbits
From: AC Coordinator / NRCan GSDivision
Date: Tue, 24 Sep 1996 5:53:51 PDT

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IGS Electronic Report    Tue Sep 24  5:53:51 PDT 1996      Message Number 2997
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Author: AC Coordinator / NRCan GSDivision
Subject: Wk 0870 IGS Final Orbits

Final IGS Orbit Combination - Week 0870   (Sep 08, 1996 - Sep 14, 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 (IGS08707.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 and their rates (xrt, yrt) are computed using a weighted average
of all available centres (weights are those from the orbit combination). 
Pole rate combination uses only centres providing estimated pole rates.
These values are supplemented with the current IERS Bulletin A UT1-UTC values. 

  The Final Orbit files generated and uploaded into CDDIS @ NASA/GSFC are:

 IGS08700-6.SP3  IGS GPS ephemeris files for days 0-6, week 0870 in SP3 format.
 IGS08707.ERP    Earth rotation parameters (ERP) associated with ephemerides.
 IGS08707.SUM    Complete report.

REMARKS on IGS Final 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. Rapid ("IGR") orbits/clocks are included in the combination for statistics
   only.

4. The following centre clock solutions, which provide broadcast clock
   corrections, were excluded from the combination but kept in the combination
   statistics:
            -> Centre: NGS 

5. Centre clock weights were determined using the following non-SA satellites:

                  Day | PRN list
                  ----+---------
                  0-6 |  15 28 

6. State vector resets were modeled for the following satellites to
   alleviate the effects of modelling problems, experienced by all centres,
   in the Long Arc (LA) process:

          Day (Date) |   TIME   |  PRN  | Centres  | Reason
         ------------+----------+-------+------------------------------
          2 (Sep 10) | 00:00:00 |  14   |   ALL    | Modeling problems
          3 (Sep 11) | 00:00:00 |   1   |   ALL    | Modeling problems
          3 (Sep 11) | 00:00:00 |  19   |   ALL    | Modeling problems (a)
          4 (Sep 12) | 00:00:00 |  18   |   ALL    | Modeling problems (b)
          5 (Sep 13) | 00:00:00 | 4,5,7 |   ALL    | Modeling problems
          5 (Sep 13) | 00:00:00 | 15,16 |   ALL    | Modeling problems
          5 (Sep 13) | 00:00:00 | 23,24 |   ALL    | Modeling problems
          5 (Sep 13) | 00:00:00 |  25   |   ALL    | Modeling problems

  (a) Due to unrealistic long arc RMS, PRN19 was excluded from the long arc
      evaluation on days 2 and 3 for ACs that submitted solutions for this
      satellite;

  (b) Due to unrealistic long arc RMS, PRN18 was excluded from the long arc
      evaluation on days 2 and 3 for ACs that submitted solutions for this
      satellite;

7. Starting with GPS wk 0866, the subdaily polar motion (Ray Model for diurnal/
   subdiurnal tides) was implemented in the Long Arc (LA) evaluation.
   This resulted in decreased LA RMS (by about 1 cm) of a seven-day arc.

ORBIT COMBINATION AND EVALUATION STATISTICS:

For a complete description of tables and statistics, please refer to the report
posted on CDDIS (IGS08707.SUM).

Table 1: Week 0870 summary.                       (Sep 08, 1996 - Sep 14, 1996)

Table 1.0870.a   GPS week: 0870   MJD: 50334.0-50340.0

         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  77 | .00  .02 -.01  -.16   .01   .40   .0  .10  .06 |    -.2    7.8    1.3
        | .01  .01  .00   .09   .10   .41   .1           |   12.7   27.3
emr  29 | .00  .00  .00   .30  -.09   .05  -.1  .10  .09 | 3227.0   18.2     .5
        | .00  .00  .01   .23   .22   .25   .1           |   38.9    7.0
esa  57 | .00  .00  .00   .26   .02   .39   .1  .12  .09 |    4.0   12.8     .9
        | .00  .01  .01   .14   .13   .24   .1           |   17.3   14.9
gfz  49 | .00 -.03  .01   .01   .09  -.18  -.3  .08  .06 | 3228.9   18.4     .4
        | .01  .01  .01   .04   .06   .41   .1           |   39.1    7.2
igr  n/a| .00  .00  .00  -.09  -.28  -.22  -.1  .13  .08 |     .4    -.7    1.3
        | .01  .01  .01   .16   .39   .22   .2           |    2.1    2.8
jpl  37 | .00  .02  .00  -.07  -.05   .06   .2  .09  .09 | 2403.4   13.1     .5
        | .01  .00  .01   .10   .13   .18   .1           | 1380.4   12.0
ngs  50 | .01 -.05 -.01  -.04  -.04  -.28  -.2  .17  .16 |   -1.6    3.3   77.9
        | .01  .01  .01   .39   .25   .29   .1           |    6.3    9.0
sio  118|-.01  .02  .01  -.23  -.02  -.56   .1  .11  .11 |     .0     .0     .0
        | .01  .01  .01   .09   .09   .33   .1           |     .0     .0

Table 1.0870.b   GPS week : 0870   MJD: 50334.0-50340.0

         Satellite position sigmas for the combined orbits
         (coded in the IGS SP3 orbit files).
         "E" flags eclipsing satellites.
         Units: cm.

              Day of GPS week
 PRN  |   0   1   2   3   4   5   6 |  Remarks
------|-----------------------------|------------------------------------------
   1E |   4   5   5   5   4   4   4 |
   2  |   3   3   3   3   3   3   3 |
   3E |   3   4   4   5   4   3   3 |
   4  |   3   3   2   3   4   5   3 |
   5  |   2   2   3   2   3   3   3 |
   6E |   5   5   5   5   5   4   4 |
   7E |   3   4   3   4   4   5   4 |
   9  |   2   2   3   3   3   3   3 |
  10  |   3   3   3   4   3   4   3 |
  14  |   3   6   4   4   3   3   3 |
  15  |   2   3   3   4   3   3   3 |
  16  |   4   3   2   3   3  14   3 | Modeling problems on day 5.
  17  |   2   3   3   3   3   2   3 |
  18E |   4   8   5  33   6   5   5 | Modeling problems on day 3.
  19  |   4   4   6  20   3   3   3 | Modeling problems on day 3.
  21  |   3   3   3   3   3   2   2 |
  22  |   3   3   2   4   3   3   3 |
  23  |   6   6   6   6   7   7   4 |
  24  |   2   3   2   3   3   4   2 |
  25  |   3   3   3   4   5   3   3 |
  26E |   4   5   4   5   5   4   4 |
  27  |   3   3   3   4   3   3   3 |
  28E |   4   4   4   4   4   4   3 |
  29E |   5   5   4   5   5   5   4 |
  31E |   4   4   4   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 2.0870.0   GPS week: 0870   Day: 0   MJD: 50334.0

CENT STA|  DX   DY   DZ    RX    RY    RZ  SCL  RMS WRMS |   TOFT  TDRFT    RMS
--------|------------------------------------------------|---------------------
cod  78 | .00  .02  .00  -.25   .09   .16  -.1  .08  .06 |   -8.7   13.3    1.3
emr  30 |-.01  .01  .00   .21  -.21   .09  -.1  .09  .08 | 3164.1   32.7     .6
esa  58 | .00 -.01 -.01   .27  -.03   .42   .2  .09  .07 |  -18.3   44.3    1.1
gfz  53 | .00 -.02  .00   .02   .15  -.14  -.1  .08  .06 | 3165.8   33.2     .5
igr  n/a| .00 -.01  .00   .05  -.03  -.36  -.1  .07  .07 |   -3.4    3.8    3.0
jpl  37 | .00  .02  .00  -.11  -.03   .00   .3  .06  .06 | 3166.0   32.8     .5
ngs  50 | .01 -.04  .00   .17   .09  -.09  -.2  .13  .13 |   -8.4   11.3   76.3
sio  123|-.01  .02  .00  -.20   .06  -.34   .1  .08  .08 |     .0     .0     .0

Table 2.0870.1   GPS week: 0870   Day: 1   MJD: 50335.0

CENT STA|  DX   DY   DZ    RX    RY    RZ  SCL  RMS WRMS |   TOFT  TDRFT    RMS
--------|------------------------------------------------|---------------------
cod  77 | .01  .02 -.01  -.17   .08   .36   .2  .09  .06 |    5.4    1.8    1.2
emr  28 |-.01  .00  .00   .28  -.07   .06  -.1  .10  .10 | 3195.2   18.4     .6
esa  57 |-.01  .00 -.01   .41  -.04   .20   .2  .15  .09 |  -11.5   14.9     .7
gfz  48 |-.01 -.03  .02  -.03   .10  -.12  -.4  .07  .06 | 3196.9   18.7     .5
igr  n/a| .00 -.01  .00   .06  -.07  -.23  -.3  .07  .07 |     .6   -1.4     .6
jpl  37 | .01  .01 -.01   .01  -.29   .04   .3  .08  .08 | 3196.8   19.0     .5
ngs  50 | .01 -.05 -.01   .01   .16  -.68  -.1  .14  .14 |   -8.9   15.2   77.7
sio  119|-.01  .02  .02  -.14   .07  -.13   .0  .12  .12 |     .0     .0     .0

Table 2.0870.2   GPS week: 0870   Day: 2   MJD: 50336.0

CENT STA|  DX   DY   DZ    RX    RY    RZ  SCL  RMS WRMS |   TOFT  TDRFT    RMS
--------|------------------------------------------------|---------------------
cod  78 | .00  .01 -.01   .00   .08   .65   .0  .07  .05 |   14.8  -20.5    1.3
emr  29 | .00  .00  .00   .16  -.10   .22   .0  .10  .10 | 3218.9   10.9     .5
esa  57 | .00 -.01  .00   .13  -.06   .48   .0  .12  .08 |   23.9    3.6     .6
gfz  49 | .00 -.03  .01   .04   .14  -.07   .0  .07  .06 | 3220.6   11.1     .4
igr  n/a| .01  .00 -.01  -.03  -.17  -.45   .1  .07  .06 |     .4    -.6     .5
jpl  37 | .01  .02  .00  -.14  -.04  -.17   .1  .07  .07 | 3219.9   11.3     .4
ngs  50 | .01 -.04 -.02  -.07   .01  -.46   .0  .15  .15 |    6.5   -8.4   77.1
sio  115|-.01  .02  .00  -.11  -.10 -1.05   .3  .09  .09 |     .0     .0     .0

Table 2.0870.3   GPS week: 0870   Day: 3   MJD: 50337.0

CENT STA|  DX   DY   DZ    RX    RY    RZ  SCL  RMS WRMS |   TOFT  TDRFT    RMS
--------|------------------------------------------------|---------------------
cod  78 |-.01  .03 -.01  -.08  -.18  1.11   .2  .15  .06 |    7.4   -2.7    1.2
emr  30 | .00  .01 -.01   .23  -.16  -.14  -.1  .12  .11 | 3227.7   15.7     .5
esa  57 | .00  .01  .01   .25   .32   .72   .3  .11  .08 |  -12.6   -1.3     .8
gfz  46 | .00 -.03  .00   .03   .00 -1.09  -.2  .08  .07 | 3229.5   16.0     .4
igr  n/a| .00  .00  .01  -.41 -1.13  -.50  -.2  .20  .12 |     .8    -.6     .9
jpl  37 | .00  .02  .00  -.07   .00   .40   .2  .18  .18 | 3230.0   15.9     .6
ngs  50 | .01 -.07  .00  -.85  -.32  -.53  -.1  .23  .21 |    1.0     .9   78.8
sio  121|-.02  .03  .00  -.20  -.15  -.76   .0  .17  .17 |     .0     .0     .0

Table 2.0870.4   GPS week: 0870   Day: 4   MJD: 50338.0

CENT STA|  DX   DY   DZ    RX    RY    RZ  SCL  RMS WRMS |   TOFT  TDRFT    RMS
--------|------------------------------------------------|---------------------
cod  77 |-.01  .01 -.01  -.15   .04   .55   .0  .09  .06 |    -.1    -.1    1.2
emr  28 | .00  .01 -.01   .82   .38  -.41  -.1  .09  .09 | 3243.2   15.7     .5
esa  57 | .01  .01  .00   .18   .01   .47   .1  .15  .10 |   14.5   12.2     .9
gfz  48 | .01 -.02  .00  -.04   .02   .10  -.4  .07  .06 | 3244.8   15.7     .5
igr  n/a| .00 -.01  .00  -.20  -.20  -.02  -.2  .08  .08 |    3.9   -5.7     .6
jpl  37 |-.01  .02  .01  -.22  -.13  -.03   .3  .08  .07 | 3244.9   15.7     .5
ngs  50 | .02 -.07 -.01  -.06  -.46  -.27  -.2  .14  .14 |   -3.5    5.9   77.3
sio  117| .00  .02  .01  -.31  -.09  -.32   .2  .08  .08 |     .0     .0     .0

Table 2.0870.5   GPS week: 0870   Day: 5   MJD: 50339.0

CENT STA|  DX   DY   DZ    RX    RY    RZ  SCL  RMS WRMS |   TOFT  TDRFT    RMS
--------|------------------------------------------------|---------------------
cod  76 | .00  .01  .00  -.18  -.06  -.06  -.2  .11  .06 |    4.0   -2.6    1.2
emr  30 |-.01  .00  .00   .24  -.27   .25  -.1  .09  .08 | 3263.8   13.8     .5
esa  56 | .01  .01 -.01   .10  -.06  -.04   .2  .12  .08 |   14.8    6.8     .9
gfz  49 | .01 -.03  .00   .00   .08   .02  -.3  .08  .06 | 3265.5   14.1     .5
igr  n/a| .01  .00 -.01  -.03  -.06   .00   .0  .23  .06 |     .7    -.8     .7
jpl  37 | .00  .01  .00   .02   .10   .06   .2  .08  .07 |  385.5   -3.5     .5
ngs  50 | .01 -.04 -.01   .32   .02   .13  -.2  .19  .19 |    6.0   -7.9   80.5
sio  115|-.01  .02  .01  -.25   .08  -.47   .2  .10  .10 |     .0     .0     .0

Table 2.0870.6   GPS week: 0870   Day: 6   MJD: 50340.0

CENT STA|  DX   DY   DZ    RX    RY    RZ  SCL  RMS WRMS |   TOFT  TDRFT    RMS
--------|------------------------------------------------|---------------------
cod  75 |-.01  .01 -.01  -.28   .00   .03   .1  .07  .05 |  -23.9   65.4    1.3
emr  30 |-.01  .00  .00   .18  -.19   .31   .1  .08  .08 | 3276.2   20.1     .5
esa  57 | .01  .02 -.01   .48   .03   .44   .1  .11  .08 |   16.8    8.9    1.0
gfz  51 | .00 -.03  .01   .07   .14   .05  -.3  .08  .08 | 3278.9   20.5     .4
igr  n/a| .00  .01 -.01  -.09  -.32   .00  -.1  .06  .05 |     .1     .2     .5
jpl  37 | .01  .02  .00   .04   .01   .14   .2  .05  .05 |  380.4     .8     .5
ngs  50 | .01 -.06  .01   .19   .22  -.06  -.4  .15  .15 |   -3.7    5.7   77.5
sio  116| .00  .02  .02  -.37   .00  -.84  -.2  .07  .07 |     .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 for all satellites.
         "NE" stands for long arc orbit RMS for Non-Eclipsing satellites only.
         "MEDI","MD" stands for median of the centre's satellite RMS.

         Units: cm.

Table 3.0870.0   GPS week: 0870   Day: 0   MJD: 50334.0

               Weighted Average                Orbit Dynamics (7 days)
 PRN  | cod emr esa gfz igr jpl ngs sio  IGS |  cod emr esa gfz igr jpl ngs sio  IGS
------|--------------------------------------|--------------------------------------
   1E |   6  11  11   7   4   8  20   6    4 |    6  13  12  11   8   6  26  10    8
   2  |   6   5   5   5   5   6   8   9    3 |    6   8   8   8   8   6  12   9    6
   3E |   6   9   8   8   5   8  14   8    3 |    6  14  11  20  15  10  23  11   10
   4  |   4   5   4   5   2   4   9  11    3 |    4   7   5   8   6   4   8   8    4
   5  |   5   5   7   4   6   4   5   4    2 |    4   8   6   8   8   5  10   5    5
   6E |  13  10  10  18   7  10  13   7    5 |    7   9  10  14  13   4  16   7    6
   7E |   6   7   6   9  10   4  15  10    3 |    4   9   8  11  12   3  19   8    6
   9  |   4   7   8   6   6   4   8   7    2 |    4   8   6  11   8   4  14   8    5
  10  |   6   4   7   4  10 ---   9   7    3 |    7  10   8  11  10 ---  12  12    8
  14  |   6   6   4   4   6   5  14   6    3 |    5   5  18   6   7   5   8   6    5
  15  |   5   7   5   4   8   3   8   8    2 |    4   6   6   9   6   5   7   6    5
  16  |   6   5  15   5  10  12  10   6    4 |    5   7   8   7   7  12  12   6    6
  17  |   4   4   6   5   3   4  12   5    2 |    5   7   7  12   8   8  15   7    6
  18E |   8  11  13   7   8   8  19  10    4 |    6  12  12  11   7   7  14   7    6
  19  |   7  11  11   8  11   6  15   8    4 |   12  17   7  18  16  13  17  15   12
  21  |   5   8   4   9   9   6  12   6    3 |    5   9   6  15   7   6  15   5    7
  22  |   6   6  10   6   5   5  10   8    3 |    5   7   7  10   8   7  12   8    5
  23  |  20  12  13  11   7   8  18  14    6 |   19  24  19  20  19  24  15  28   20
  24  |   5   5   4   4   7   5   8   6    2 |    4   7   4   7   7   5   9   6    3
  25  |   7   8   8   4   6   5  13   8    3 |    6   8   6   8   6   7  14   8    6
  26E |  11   9  15  10   5   9  16   8    4 |   32  30  30  30  30  30  40  32   29
  27  |   4   6  10   5   5   3  13   6    3 |    6   8   9  12   9   6  17  11    7
  28E |   5  15  11   8  10   6  10   7    4 |    6  10  10  16  12   6  15   6    7
  29E |   8  15  14   4   5   6  26  11    5 |   10  18  16  13  11  11  16  15   11
  31E |   7   8   7  12   8   8  11   9    4 |    9  16  11  22  14   8  18  11   10
------|--------------------------------------|--------------------------------------
 RMS  |   8   9   9   8   7   6  13   8      |T   9  12  11  13  11  10  16  12    9
 WRMS |   6   8   7   6   7   6  13   8      |NE  7  10   9  11   9   9  12  10    7
 MEDI |   6   7   8   6   6   6  12   8      |MD  6   9   8  11   8   6  15   8    6

Table 3.0870.1   GPS week: 0870   Day: 1   MJD: 50335.0

               Weighted Average                Orbit Dynamics (7 days)
 PRN  | cod emr esa gfz igr jpl ngs sio  IGS |  cod emr esa gfz igr jpl ngs sio  IGS
------|--------------------------------------|--------------------------------------
   1E |   5  17   7   6   8   8  15  18    5 |    6  12  15  11  10   5  24   9    7
   2  |   7   6   6   8   5   5  11   9    3 |    5   7  10   8   8   6  15   7    4
   3E |   6  10  10   7   6   8  16   8    4 |    6  16  11  16  11   7  21  11   10
   4  |   9   7  13   6  12   4  11  10    3 |    6   8  11   8  13   6   9  10    4
   5  |   5   4   6   3   5   4  10   7    2 |    5   9   9  10   6   5  10   9    6
   6E |  13  15  13  12   4   8  12  11    5 |   10  12  11  12   8   3  14  11    6
   7E |   8  12   9   9   5   8  13  10    4 |    7  10   6  13  10   8  19   8    5
   9  |   4   6   9   5   6   4  11   6    2 |    3   8   7   8   7   3  13   9    4
  10  |   5   6   9   5   7 ---   8   9    3 |    7  10   7  10  13 ---  14  15    8
  14  |   8  10  37   6   7   8  13  12    6 |    4   7  18   6   6   5   9   8    4
  15  |   4   6  12   7  10   5   6   9    3 |    5   7  11  10   8   7   8   8    5
  16  |   4   7   9   6   8  10   7   8    3 |    5   7  10   6  10  10  12   9    4
  17  |   6   7  10   4   5   5  12   8    3 |    5   8  12   7   6   4  15   9    4
  18E |  17  11  35  10   8  19  32  22    8 |    6  12  11  13   8  17  17   7    7
  19  |  12   7  17   7   5   7  14  10    4 |    6  11   9  10   7   6  14   8    7
  21  |   6   7   3   5   5   4  13   8    3 |    4   8   6  10  10   6  15   9    6
  22  |   5   9   7   9   6   6  11  10    3 |    4  12   6   9   7   5  12  11    4
  23  |  17  17  27  12  11  12  17   9    6 |   23  40  15  32  27  41  35  38   31
  24  |   6   6   4   3   7   4   9  13    3 |    4   7   5   6   8   4  11  12    4
  25  |   8   8   6   5   4   5   8  13    3 |    6  10   8   9   8   5  15  12    5
  26E |  13  11  19  11   6   8  25  10    5 |   28  27  35  30  32  25  30  27   27
  27  |   6   8  13   7   6   5  13   8    3 |    6  11  15  13   9   6  14   8    6
  28E |   5  14  10   8   4   7  12   9    4 |    5  12  13  13   8   5  12   9    6
  29E |   9  14   8   8   6   8  20  21    5 |   13  18  18  16  14  13  20  15   13
  31E |   7   9  14   8   8   6  10  12    4 |    8  16  15  16  11   6  16  13    9
------|--------------------------------------|--------------------------------------
 RMS  |   9  10  15   7   7   8  14  12      |T   9  14  13  13  12  11  16  13   10
 WRMS |   6  10   9   6   7   8  14  12      |NE  7  13  10  11  10  11  15  13    9
 MEDI |   6   8  10   7   6   7  12  10      |MD  6  10  11  10   8   6  14   9    6

Table 3.0870.2   GPS week: 0870   Day: 2   MJD: 50336.0

               Weighted Average                Orbit Dynamics (7 days)
 PRN  | cod emr esa gfz igr jpl ngs sio  IGS |  cod emr esa gfz igr jpl ngs sio  IGS
------|--------------------------------------|--------------------------------------
   1E |   8  22   9   8   5  10  23  10    5 |    6  12  15  15  10   4  24   8    8
   2  |   4  10   9   8   5   4  13   8    3 |    5   8  12   9   8   5  16   9    5
   3E |   5  10   9   7  12  10  25  11    4 |    5  15  12  15  12   8  26  10    7
   4  |   6   7   7   5   7   4   9   4    2 |    5  10   9   8   9   5   9  10    5
   5  |   4   6  12   4   6   3  12   6    3 |    5   9   6   8   7   5  14   8    5
   6E |  11  10  12  13   6   8  15   9    5 |   10  11  14  11   6   6  15  11    6
   7E |   4  12  10   9   7   4  15   6    3 |    5  10  13  12  10   4  20  11    7
   9  |   4   7   8   6   4   5  16   7    3 |    3   9   8  10   8   4  17   9    5
  10  |   5   6   6   6   5 ---   5   8    3 |    6   8   9   8   8 ---   9   8    6
  14  |   8  11 ---   6   9  10  13   7    4 |    6   7 ---  12   7   9  14  11    7
  15  |   5   6   7   4   4   6  11   8    3 |    6  11   9   9   9   6  14  13    6
  16  |   4   5   6   6   5   4   4   7    2 |    6   9   9   6   7   7  11   8    5
  17  |   4   5   8   6   3   7  15   7    3 |    5   8  11   9   7   7  16   9    5
  18E |   8  10  23   7  19   9  19   9    5 |    0   0   0   0   0   0   0   0  ---
  19  |   8  12  30  10   7  12  15  12    6 |    0   0   0   0   0   0   0   0  ---
  21  |   4   7   6   8   4   6  15   8    3 |    5   8  10  11   9   4  13   7    5
  22  |   4   7   7   6   4   5  10   6    2 |    4  10  12   7   9   5  10   7    4
  23  |  13  11  21  10   6  10  18  16    6 |   23  46  16  43  35  43  40  49   36
  24  |   4   6   4   4   9   4   8   6    2 |    3   8   6   7   8   3   9   9    3
  25  |   8   8   9   8   7   6  12   7    3 |    7  10   9   9  11   7  13   7    6
  26E |   6   8  16  11   6   5  15  13    4 |   21  17  26  24  22  20  27  20   20
  27  |   5   6  13   7   5   5  16   7    3 |    5   8  18  11  11   5  16  11    5
  28E |   4  14  11   6   3   6  16 ---    4 |    4  12  10  12   9   5  10 ---    5
  29E |   9  16   8   6   6   6  18   8    4 |   12  16  18  16  12   9  23  11   12
  31E |   7  10  10   8   8   6  17   8    4 |    7  18   8  15  11   5  21   8    8
------|--------------------------------------|--------------------------------------
 RMS  |   7  10  12   7   7   7  15   9      |T   8  14  12  14  12  11  18  14   10
 WRMS |   5  10   8   6   6   7  15   9      |NE  7  14  10  13  11  12  15  14   10
 MEDI |   5   8   9   7   6   6  15   8      |MD  5  10  11  11   9   5  15   9    6

Table 3.0870.3   GPS week: 0870   Day: 3   MJD: 50337.0

               Weighted Average                Orbit Dynamics (7 days)
 PRN  | cod emr esa gfz igr jpl ngs sio  IGS |  cod emr esa gfz igr jpl ngs sio  IGS
------|--------------------------------------|--------------------------------------
   1E |   8  12  13  10   5  10  23  11    5 |    9  15  29  20  13   7  33  10   13
   2  |   4  11   9   7   9   5  12  14    3 |    5  12  11  11  10   4  15   9    5
   3E |   8  11  10   9  17   9  27  12    5 |    6  14  15  21  21   7  32  12   11
   4  |   6   8  10   8   8   4  16   9    3 |    4   8  10   9   7   5  15   8    4
   5  |   5   6   7   6   9   5   8   6    2 |    3   7   6  11  11   5  12   9    5
   6E |  15   9  12  13  13   7  11   9    5 |    7  11  10  16  15   6  17  13    8
   7E |   8  13   7  10   8   6  23  10    4 |    4  10   9  13  10   4  21  10    7
   9  |   7   5   9   9   7   7   9   6    3 |    4   9   8  17  12   5  16  15    7
  10  |   5  13   3   7   9 ---   9  12    4 |    7  15   9  15  16 ---  17  16    9
  14  |   6  11   7   5   9   8  15  13    4 |    5   8   8   9   8   6  11  13    5
  15  |   7  12   7   5   5   6  13  17    4 |    5  14   7  11  10   5  10  20    7
  16  |   5  13   4   7  11   6   9  13    3 |    6  13   7   9  11   6  13  13    5
  17  |   6   7   7   5   5   5  10   6    3 |    4  11   8  16  14  10  15  15    7
  18E |  53 --- --- ---  51  65  65  49   33 |    0 --- --- ---   0   0   0   0  ---
  19  |  34  29 --- ---  66  47  58  42   20 |    0   0 --- ---   0   0   0   0  ---
  21  |   4   6   5   7  15   4  10   9    3 |    4   9   8  15  14   5  14  11    6
  22  |   6  11   8   8  24   4  12  12    4 |    5  10  10  13  21   6  12   9    5
  23  |  14  10  21  10  10  12  22  10    6 |   23  35  16  31  28  37  30  33   27
  24  |   5   9   5   7   8   5  10   9    3 |    6   8   7   8  10   4  12   9    4
  25  |   4   9   9   6  10   7  22   7    4 |    7  11  10  14  12   6  18  11    7
  26E |   5   9  24   7  11   9  18  13    5 |   28  25  27  28  29  24  36  34   25
  27  |   5   9  10   7  18   5  19  12    4 |    4  12  10  10  16   4  19  12    5
  28E |   6  13  13  11   9   5  16  10    4 |    5  12  11  20  11   7  16  12    6
  29E |  11  25   9   7  15   7  17  12    5 |   20  16  22  26  27  17  26  29   19
  31E |  11  11  10   8  10   8  14  14    4 |    9  17  18  22  17   7  24  17   12
------|--------------------------------------|--------------------------------------
 RMS  |  15  12  11   8  20  18  23  17      |T  10  14  13  17  16  11  20  16   11
 WRMS |   6  11   8   7  12  18  21  17      |NE  7  13   9  14  13  10  15  14    9
 MEDI |   6  11   9   7  10   7  15  12      |MD  5  12  10  15  13   6  16  12    7

Table 3.0870.4   GPS week: 0870   Day: 4   MJD: 50338.0

               Weighted Average                Orbit Dynamics (7 days)
 PRN  | cod emr esa gfz igr jpl ngs sio  IGS |  cod emr esa gfz igr jpl ngs sio  IGS
------|--------------------------------------|--------------------------------------
   1E |   9  11  13   8  10  10  18   7    4 |    7  21  15  21  18   7  30   9   11
   2  |   6   7   6   5   6   5  10   7    3 |    6  11   7   9   9   6  15   4    6
   3E |   8   9   9   9  14   7  13   9    4 |    5  15  12  14  14   8  20   6    8
   4  |   7   8  20   6   7   5  17   7    4 |    4  11   9   9   8   4  12   8    4
   5  |   7   7  10   4   3   6   9   8    3 |    4   8  11   8   7   4  10   9    5
   6E |  15  11  17  14   8  11  11   9    5 |    7  15  12  13  12   5  16   6    6
   7E |   7   9   8   6   6   9  15   9    4 |    7  14   8  11   9   4  20   9    7
   9  |   5   6   6   8   5   5  16   6    3 |    4   6   7  10   7   4  12   6    4
  10  |   4   6  10   4  10 ---   9   7    3 |    6  11  11   9  11 ---  11   8    7
  14  |   6   6   8   5   4   7  19   5    3 |    7   9   9   8   7   8  12   6    5
  15  |   7   5  10   7   5   5  14   7    3 |    8  13  12  13   8  10   9  11    8
  16  |   8   6  11   5   7  11   9   7    3 |   11  12  12  10  13  12  24   7    9
  17  |   4  12   5   5   3   6  10   8    3 |    4  13   6   7   6   6  14   7    4
  18E |   9   9  40   7  13  10  16  11    6 |   20  16  20  24  22  19  24  20   19
  19  |   7  11  12   7   4   6   8   9    3 |    3  15   7   9   5   3   8   4    4
  21  |   5   7   5   6   7   4  12   9    3 |    6  11   7  14  11   4  18   7    7
  22  |   6   5   6   6   9   7  13   8    3 |    5  10   7   8  10   6  12   6    5
  23  |  18  12  32  10  12  11  23  13    7 |   43  50  49  53  47  57  58  58   51
  24  |   6   6  10   4   6   5   8   5    3 |    7   9   7   7  10   4   9   5    4
  25  |  19   7  10   7   8   9  27  13    5 |   18  27  25  29  27  27  37  31   25
  26E |   9  15  16  12  11   7  13   9    5 |   29  30  28  27  28  28  38  31   27
  27  |   3   6  16   5   4   5  13   7    3 |    5   9  13   8   7   5  13   5    4
  28E |   7  14  13   7  13   6   9 ---    4 |    5  15  10  14  12   4  12 ---    6
  29E |  15  17   9   6   7   9  15   8    5 |   24  30  34  29  29  32  33  29   29
  31E |   7   9  10   6   8   7  11   7    3 |    8  17  12  12  13   8  17   7    9
------|--------------------------------------|--------------------------------------
 RMS  |   9   9  15   7   8   8  14   8      |T  13  18  17  18  16  16  22  17   15
 WRMS |   6   9  10   6   8   7  14   8      |NE 12  17  16  17  15  17  21  17   15
 MEDI |   7   8  10   6   7   7  13   8      |MD  7  13  11  11  11   6  15   7    7

Table 3.0870.5   GPS week: 0870   Day: 5   MJD: 50339.0

               Weighted Average                Orbit Dynamics (7 days)
 PRN  | cod emr esa gfz igr jpl ngs sio  IGS |  cod emr esa gfz igr jpl ngs sio  IGS
------|--------------------------------------|--------------------------------------
   1E |   9  12   6  10   8   7  18   9    4 |    6  13  12  20  16   7  27   9    9
   2  |   4   4   8   5   5   7  13   8    3 |    5   7   7   8  10   5  14   8    5
   3E |   6   7   5   7   6  10  11   7    3 |    5  14   9  13  15   7  18   8    8
   4  |  18   6   9   8   9   6  30  11    5 |   20  26  22  29  26  23  25  27   24
   5  |  10   5   7   5   6   5   9   9    3 |   16  21  22  21  21  19  23  21   20
   6E |  11   9   8   9   4   8  13   7    4 |    7  10   9  13   9   5  19   8    6
   7E |  18  12   8  14   7   7  16  10    5 |    8  23  19  23  21  17  13  17   17
   9  |   8   5  10   6   4   5  19   9    3 |    4   8   6   9   8   4  13  12    5
  10  |   8  11   9   7   9 ---  11   8    4 |    6  12  10  13  16 ---  11  11    8
  14  |   5   7  12   4   2   3  17   7    3 |    8   7  10  10  10   8  17   9    8
  15  |   6   4   9   6   5   5  12   7    3 |    5   3   8   6   3   3   8   6    2
  16  |  25  22 --- --- 112  21  58  24   14 |   26  25 --- ---  80  10  58  21   14
  17  |   3   5   8   4   3   5  12   5    2 |    4   8   5   6   8   4  14   7    4
  18E |  21   8  17   9   8  12  12  12    5 |   20  19  18  25  21  22  26  21   19
  19  |   6   7   7   9   6   8  10   8    3 |    5   9   6  12   9   3  12   4    5
  21  |   6   6   7   4   3   5  11   7    2 |    4   9   8  12  12   7  18   7    6
  22  |   5   7   7   7   4   5  12   8    3 |    4   9   7   8   8   6  12   9    6
  23  |   9  12  35   8   6  13  19  12    7 |   28  28  23  30  27  28  25  29   27
  24  |  11   6  13   7   3   5  22  13    4 |   31  34  30  33  33  32  40  35   32
  25  |   6   8  10   5   4   6  12   6    3 |    3   6  10   7   4   3  12   5    4
  26E |   8   9  10  11   5   9  18   9    4 |   23  27  23  30  29  30  24  32   26
  27  |   6   5   9   6   4   6  15  11    3 |    6  10   6  10  12   7  14  12    6
  28E |   6  12  10   6   4   7  13 ---    4 |    4  11  11  13   9   5  13 ---    7
  29E |  13  13  11  10   5   9  16  10    5 |   21  28  20  23  23  24  24  28   23
  31E |   6   9   6   6   4   7  11  10    3 |    8  17  10  14  12   7  16  10   10
------|--------------------------------------|--------------------------------------
 RMS  |  11   9  12   8  23   8  19  10      |T  14  17  14  18  23  15  22  17   14
 WRMS |   6   8   8   6   6   7  19  10      |NE 14  16  14  16  25  14  23  16   14
 MEDI |   8   7   9   7   5   7  13   9      |MD  6  12  10  13  12   7  17  11    8

Table 3.0870.6   GPS week: 0870   Day: 6   MJD: 50340.0

               Weighted Average                Orbit Dynamics (7 days)
 PRN  | cod emr esa gfz igr jpl ngs sio  IGS |  cod emr esa gfz igr jpl ngs sio  IGS
------|--------------------------------------|--------------------------------------
   1E |   8   8   9   8   6   7  25   7    4 |    9  13  14  17  12   8  29  10   10
   2  |   4   6   5   7   5   5  12   9    3 |    5   8   9  10   9   6  13   7    8
   3E |   5  10   5   8   3   6  17   8    3 |    5  13   8  14   9   7  19   6    8
   4  |   7   4   7   7   4   4  16   5    3 |    8   8  10  10  11   8  10   6    9
   5  |   8   5  14   5   6   5  10   7    3 |    9   7   9   9   9   8   9   7    8
   6E |   8  11   8  16   4   6  12   8    4 |   10  14  10  15  11   7  19   9    8
   7E |   8  14   8  10   6   5  28   7    4 |    5   9   5   9   6   5  12   6    5
   9  |   5   7   8   6   6   4  11   8    3 |    3   8   6  11   8   5  17   9    6
  10  |   5   4  13   6   7 ---  13   7    3 |    6   9  10  10  10 ---  16   8    9
  14  |   5   7  13   8   6   4  17   7    3 |    4   5   7   9   9   6  13   7    7
  15  |   4  10   8   7   3   4  14   7    3 |    2   4   6   8   6   3   8   8    4
  16  |   4   6  14   6   9   5  16   5    3 |   15   3   2   1  53   6  32   6   10
  17  |   4   6   8   6   4   5  11   9    3 |    4   8   5  12   7   9  15  10    7
  18E |  17   8  10   9  13  10  12  10    5 |   21  19  16  22  16  20  23  21   20
  19  |   5   8   6   7   5   5   9   8    3 |    5   9   5   8   8   3   8   4    4
  21  |   6   6   9   5   4   3   9   7    2 |    3   8  10  10  10   6  12   6    7
  22  |   4   9  10   6   4   6  12   6    3 |    4  10   8   9   9   7  14   5    7
  23  |   6   7  26   7   5   5  14   6    4 |   34  33  27  33  34  35  36  35   34
  24  |   4   5   7   7   5   5  12   5    2 |   13  11  12  13  13  12  11  10   12
  25  |   3   9   9   4   7   6  13   5    3 |    3   6   7   7   3   3  13   5    5
  26E |   8   8  16  16   9   5  14   9    4 |   37  35  36  35  35  37  43  38   34
  27  |   3   6   7   8   3   5  15   8    3 |    5   8   8  11   9   4  17   8    5
  28E |   5  11   9   7   2   6  11   7    3 |    5  10  10  15   9   6  15   8    7
  29E |   6  11  10   9   6   6  19   7    4 |   18  18  22  20  18  17  26  16   17
  31E |   5   9   6   6   4   6  12   8    3 |   10  16  14  15  13  10  20  10   11
------|--------------------------------------|--------------------------------------
 RMS  |   7   8  11   8   6   5  15   7      |T  13  13  13  15  17  13  20  13   13
 WRMS |   5   8   8   8   5   5  15   7      |NE 10  11  10  12  17  11  17  11   11
 MEDI |   5   8   9   7   5   5  13   7      |MD  5   9   9  11   9   7  15   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 4.0870   GPS week: 0870   MJD: 50334.0-50340.0

CENT| CLK EPO  |      BRUS      |      USUD      |      WILL      |
----|----------|----------------|----------------|----------------|
cod | cod 2399 |U  49   29   78 |U  43   32   93 |   32   22   55 |
emr | emr 2354 |   45   23   76 |   34   27   79 |   20   14   40 |
esa | esa 1752 |   64   27   73 |U  33   26   83 |   24   18   47 |
gfz | gfz 1161 |   49   24   80 |U  34   27   74 |   20   14   45 |
igr | igr 2261 |   51   35   88 |   49   41  112 |   37   27   67 |
igs | igs 2400 |   44   23   71 |   32   26   77 |   21   14   41 |
jpl | jpl 2268 |U  46   23   70 |U  32   26   73 |   22   14   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 5.0870.0   GPS week: 0870   Day: 0   MJD: 50334.0

CENT| CLK EPO  |      BRUS      |      USUD      |      WILL      |
----|----------|----------------|----------------|----------------|
cod | cod 2399 |   44   26   67 |   40   33   98 |   28   21   57 |
emr | emr 2396 |   32   20   70 |   28   26   77 |   19   15   44 |
esa | esa 1912 |   33   19   59 |   36   24   76 |   22   17   53 |
gfz | gfz 1180 |   39   19   67 |   37   24   87 |   17   12   48 |
igr | igr 2111 |   75   71  139 |   93   84  219 |   83   62  147 |
igs | igs 2399 |   34   20   62 |   28   23   75 |   18   13   46 |
jpl | jpl 2267 |   37   20   55 |   31   22   71 |   20   14   48 |

Table 5.0870.1   GPS week: 0870   Day: 1   MJD: 50335.0

CENT| CLK EPO  |      BRUS      |      USUD      |      WILL      |
----|----------|----------------|----------------|----------------|
cod | cod 2399 |   46   34   73 |   36   28   76 |   33   26   50 |
emr | emr 2399 |   38   24   78 |   28   24   60 |   19   15   38 |
esa | esa 1620 |   34   23   70 |   31   26   66 |   21   14   50 |
gfz | gfz 1182 |   39   25   80 |   30   24   59 |   19   13   46 |
igr | igr 2393 |   38   23   75 |   28   24   60 |   19   16   38 |
igs | igs 2400 |   33   24   70 |   26   23   57 |   20   15   39 |
jpl | jpl 2268 |   41   24   73 |   28   23   57 |   22   15   43 |

Table 5.0870.2   GPS week: 0870   Day: 2   MJD: 50336.0

CENT| CLK EPO  |      BRUS      |      USUD      |      WILL      |
----|----------|----------------|----------------|----------------|
cod | cod 2400 |   48   27   78 |   36   36   92 |   33   20   62 |
emr | emr 2399 |   45   21   66 |   33   31   83 |   19   12   45 |
esa | esa 1618 |   45   21   61 |   30   30   94 |   23   16   42 |
gfz | gfz 1182 |   28   19   59 |   27   33   70 |   23   15   46 |
igr | igr 2383 |   42   22   66 |   28   28   81 |   20   13   45 |
igs | igs 2400 |   43   21   64 |   28   28   80 |   21   13   45 |
jpl | jpl 2268 |   31   20   55 |   27   30   71 |   20   12   47 |

Table 5.0870.3   GPS week: 0870   Day: 3   MJD: 50337.0

CENT| CLK EPO  |      BRUS      |      USUD      |      WILL      |
----|----------|----------------|----------------|----------------|
cod | cod 2400 |   56   31   98 |   44   35   90 |   34   24   56 |
emr | emr 2207 |   64   26  100 |   37   27   75 |   21   19   40 |
esa | esa 1784 |   64   23   99 |   39   27   78 |   26   18   47 |
gfz | gfz 1089 |   80   27  127 |   39   33   74 |   20   19   46 |
igr | igr 2291 |   61   24   95 |   49   32   93 |   22   20   50 |
igs | igs 2400 |   59   24   95 |   36   27   74 |   22   16   41 |
jpl | jpl 2268 |   64   25   98 |   34   30   66 |   20   13   42 |

Table 5.0870.4   GPS week: 0870   Day: 4   MJD: 50338.0

CENT| CLK EPO  |      BRUS      |      USUD      |      WILL      |
----|----------|----------------|----------------|----------------|
cod | cod 2397 |   64   28   66 |   41   28   81 |   32   20   54 |
emr | emr 2377 |   56   24   64 |   27   24   65 |   20   12   32 |
esa | esa 1939 |   53   25   60 |   26   22   70 |   26   18   43 |
gfz | gfz 1177 |   47   27   60 |   28   23   75 |   19   10   39 |
igr | igr 1936 |   56   23   67 |   28   27   68 |   22   13   32 |
igs | igs 2400 |   56   24   61 |   25   22   62 |   22   11   36 |
jpl | jpl 2268 |   56   24   55 |   25   22   57 |   21   12   36 |

Table 5.0870.5   GPS week: 0870   Day: 5   MJD: 50339.0

CENT| CLK EPO  |      BRUS      |      USUD      |      WILL      |
----|----------|----------------|----------------|----------------|
cod | cod 2400 |   44   27   87 |   47   38  110 |   27   22   50 |
emr | emr 2302 |   43   22   79 |   37   33  102 |   18   12   37 |
esa | esa 1654 |   78   32   74 |   28   27  102 |   20   22   42 |
gfz | gfz 1133 |   55   26   82 |   30   25   65 |   18   13   39 |
igr | igr 2370 |   43   23   85 |   35   30   96 |   17   13   35 |
igs | igs 2400 |   42   22   78 |   37   32   96 |   19   15   36 |
jpl | jpl 2268 |   43   21   76 |   34   31   96 |   20   12   39 |

Table 5.0870.6   GPS week: 0870   Day: 6   MJD: 50340.0

CENT| CLK EPO  |      BRUS      |      USUD      |      WILL      |
----|----------|----------------|----------------|----------------|
cod | cod 2400 |   36   27   70 |   52   26   97 |   35   20   56 |
emr | emr 2399 |   27   23   66 |   43   24   87 |   25   14   42 |
esa | esa 1735 |  108   38   81 |   36   26   88 |   28   19   49 |
gfz | gfz 1181 |   31   25   63 |   45   22   85 |   25   12   47 |
igr | igr 2343 |   28   26   68 |   42   22   86 |   25   15   43 |
igs | igs 2400 |   31   25   63 |   42   23   86 |   26   14   44 |
jpl | jpl 2268 |   37   25   66 |   41   22   84 |   28   16   49 |

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