Subject: [IGSREPORT-3504] Wk 0893 IGS Final Orbits
From: AC Coordinator / NRCan GSDivision
Date: Tue, 4 Mar 1997 5:45:52 PST

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IGS Electronic Report    Tue Mar  4  5:45:52 PST 1997      Message Number 3504
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Author: AC Coordinator / NRCan GSDivision
Subject: Wk 0893 IGS Final Orbits

Final IGS Orbit Combination - Week 0893   (Feb 16, 1997 - Feb 22, 1997)

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 (IGS08937.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 and Springer, 1995, Combining the orbits of the IGS Analysis
   Centers, Bulletin Geodesique, 69, pp 200-222.

   Kouba, Mireault and Lahaye, 1995, 1994 IGS Orbit/Clock Combination and 
   Evaluation, Appendix I of the Analysis Coordinator Report, International GPS 
   Service for Geodynamics (IGS) 1994 Annual Report, pp. 70-94.

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:

 IGS08930-6.SP3  IGS GPS ephemeris files for days 0-6, week 0893 in SP3 format.
 IGS08937.ERP    Earth rotation parameters (ERP) associated with ephemerides.
 IGS08937.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 

6. The following 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.

                  Day | Centre | PRN list
                  ----+--------+---------------
                   2  |  ESA   |  23
                   3  |  ESA   |  18
                   4  |  ESA   |  16

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

          Day (Date) |   TIME   |  PRN  | Centres  | Reason
         ------------+----------+-------+----------+-------------------
          2 (Feb 18) | 00:00:00 |  23   |   All    | Modeling problems
          4 (Feb 20) | 00:00:00 |  06   |   All    | Modeling problems
          4 (Feb 20) | 00:00:00 |  14   |   All    | Modeling problems (a)
          4 (Feb 20) | 00:00:00 |  18   |   All    | Modeling problems
          4 (Feb 20) | 00:00:00 |  31   |   All    | Modeling problems
          5 (Feb 21) | 00:00:00 |  16   |   All    | Modeling problems (b)
          6 (Feb 22) | 06:00:00 |  15   |   All    | Modeling problems

  (a) Due to unrealistic long arc RMS, PRN14 was excluded from the long arc 
      evaluation on day 3 for ACs that submitted solutions for this satellite;

  (b) Due to unrealistic long arc RMS, PRN16 was excluded from the long arc 
      evaluation on day 4 for ACs that submitted solutions for this satellite;

8. 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 A
   were used.

9. Anti-Spoofing (AS) has been off since Feb 02/1997 (wk 891, day 0).

ORBIT COMBINATION AND EVALUATION STATISTICS:

For a complete description of tables and statistics, please refer to the report
posted on CDDIS (IGS08937.SUM).

Table 1: Week 0893 summary.                       (Feb 16, 1997 - Feb 22, 1997)

Table 1.0893.a   GPS week: 0893   MJD: 50495.0-50501.0

         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  84 | .00  .01  .00  -.35   .11   .24  -.3  .06  .04 |   -2.1     .0     .4
        | .00  .00  .00   .08   .15   .17   .1           |    9.1   15.2
emr  30 | .00 -.01  .00   .26  -.01   .18  -.1  .10  .10 |  235.1   54.1     .4
        | .01  .00  .01   .12   .09   .31   .1           |  113.0   16.2
esa  55 | .00 -.01 -.01   .17   .03   .31   .0  .15  .08 |   -6.3  -74.4    1.7
        | .01  .00  .01   .29   .10   .15   .1           |   13.3   36.1
gfz  48 | .00  .00  .00   .28  -.05  -.14  -.2  .05  .05 |  235.1   54.9     .5
        | .00  .00  .00   .04   .11   .16   .1           |  113.1   16.2
igr  n/a| .01 -.01  .00   .07  -.03  -.07  -.1  .06  .05 |   -2.6    3.7    1.6
        | .01  .01  .01   .12   .09   .27   .1           |    3.5    5.6
jpl  37 | .00  .01  .00  -.11  -.15  -.03   .3  .06  .06 |  322.3   20.9     .4
        | .01  .00  .00   .13   .10   .07   .1           |  362.7   40.4
ngs  54 | .01 -.07 -.01   .27   .32  -.36  -.1  .15  .15 |   -2.4    -.5   81.1
        | .01  .01  .01   .28   .23   .26   .2           |    7.4   10.8
sio  115| .00  .01  .02  -.26   .02  -.31   .4  .08  .07 |     .0     .0     .0
        | .01  .01  .01   .05   .05   .11   .3           |     .0     .0

Table 1.0893.b   GPS week : 0893   MJD: 50495.0-50501.0

         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 |   2   3   3   2   3   3   3 |
   2  |   2   3   2   2   3   2   3 |
   3E |   4   4   4   3   4   4   4 |
   4  |   2   2   2   2   3   3   3 |
   5  |   2   2   2   2   3   2   3 |
   6E |   4   4   3   3   3   3   3 |
   7E |   4   3   3   3   4   4   4 |
   9  |   2   2   2   3   2   3   3 |
  10  |   2   2   2   3   3   3   3 |
  14  |   3   2   6   3   6   7   3 |
  15  |   2   2   2   3   3   3   8 |
  16  |   2   2   2   3  10   4   4 | Modeling problems on day 4.
  17  |   2   2   3   2   3   3   3 |
  18E |   4   3   3   9   3   3   3 |
  19  |   3   2   2   2   3   3   2 |
  21  |   2   2   3   2   2   3   3 |
  22  |   2   2   2   2   2   4   3 |
  23  |   3   3  11   5   6   5   6 | Modeling problems on day 2.
  24  |   2   2   2   3   2   3   3 |
  25  |   2   2   2   2   3   3   3 |
  26E |   2   3   3   3   3   3   3 |
  27  |   2   2   2   2   3   3   3 |
  29E |   2   3   3   3   3   4   4 |
  30  |   2   2   2   2   3   2   3 |
  31E |   4   3   3   3   3   3   4 |

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

Table 2.0893.0   GPS week: 0893   Day: 0   MJD: 50495.0

CENT STA|  DX   DY   DZ    RX    RY    RZ  SCL  RMS WRMS |   TOFT  TDRFT    RMS
--------|------------------------------------------------|---------------------
cod  86 | .00  .01  .00  -.47  -.08   .11  -.2  .04  .03 |   -3.3   -2.9     .5
emr  33 |-.01 -.01  .00   .40  -.04   .07  -.2  .10  .10 |   79.1   47.0     .5
esa  57 | .01 -.01  .00   .04  -.08   .40   .2  .09  .07 |  -10.1  -32.1    1.2
gfz  48 |-.01  .00  .00   .33   .07  -.03  -.2  .04  .04 |   78.7   48.2     .4
igr  n/a| .01 -.01  .00   .06  -.02   .10  -.3  .05  .04 |     .0   -1.9     .8
jpl  37 | .00  .01 -.01   .05  -.03  -.05   .2  .04  .04 |  139.1   -7.5     .4
ngs  54 | .03 -.07 -.01   .38   .26  -.52  -.2  .13  .12 |   -1.3   -6.2   81.0
sio  118| .01  .01  .02  -.26   .09  -.31   .8  .08  .07 |     .0     .0     .0

Table 2.0893.1   GPS week: 0893   Day: 1   MJD: 50496.0

CENT STA|  DX   DY   DZ    RX    RY    RZ  SCL  RMS WRMS |   TOFT  TDRFT    RMS
--------|------------------------------------------------|---------------------
cod  87 | .00  .01  .00  -.30  -.06   .35  -.3  .04  .04 |    4.7   -4.1     .4
emr  31 |-.01  .00  .00   .32   .06  -.14   .0  .11  .11 |  130.5   50.7     .3
esa  57 | .00 -.01 -.01   .45   .05   .58   .0  .10  .08 |   -1.8  -67.4    1.9
gfz  50 |-.01  .00  .00   .22  -.02  -.09  -.1  .04  .04 |  130.0   52.0    1.1
igr  n/a| .01 -.01 -.01   .10   .12   .11  -.1  .06  .06 |    -.4     .4     .4
jpl  37 | .01  .01  .00  -.01  -.08   .00   .4  .04  .04 |  133.9   -7.5     .3
ngs  54 | .02 -.06  .00  -.08   .12  -.25  -.2  .15  .15 |     .4   -1.9   80.4
sio  111| .00  .00  .01  -.27   .03  -.36   .1  .05  .05 |     .0     .0     .0

Table 2.0893.2   GPS week: 0893   Day: 2   MJD: 50497.0

CENT STA|  DX   DY   DZ    RX    RY    RZ  SCL  RMS WRMS |   TOFT  TDRFT    RMS
--------|------------------------------------------------|---------------------
cod  88 | .01  .02  .00  -.35   .05   .29  -.2  .06  .04 |   -8.6    3.8     .4
emr  31 | .00 -.01  .00   .31  -.02   .53  -.2  .10  .09 |  167.4   74.1     .4
esa  56 | .00 -.01 -.01   .24   .11   .31   .1  .21  .08 |  -12.8  -66.1    1.2
gfz  48 | .00 -.01  .00   .27   .05  -.32  -.3  .05  .04 |  167.7   74.4     .4
igr  n/a| .00 -.02  .00   .29  -.03   .04  -.2  .06  .05 |   -3.1    2.8     .4
jpl  37 | .00  .02 -.01  -.22  -.18  -.04   .4  .05  .05 |  -46.3    5.9     .4
ngs  55 | .00 -.08  .00   .58   .09  -.30   .3  .16  .16 |  -11.6   11.5   80.0
sio  113|-.01  .01  .01  -.29   .03  -.25   .1  .09  .06 |     .0     .0     .0

Table 2.0893.3   GPS week: 0893   Day: 3   MJD: 50498.0

CENT STA|  DX   DY   DZ    RX    RY    RZ  SCL  RMS WRMS |   TOFT  TDRFT    RMS
--------|------------------------------------------------|---------------------
cod  86 | .00  .02  .00  -.35   .06   .45  -.2  .05  .04 |    1.1    7.2     .3
emr  32 |-.01 -.01  .01   .22  -.01   .16  -.2  .09  .09 |  245.3   50.3     .3
esa  55 | .00 -.01 -.01   .34   .19   .11  -.1  .18  .08 |    -.6 -101.8    3.3
gfz  52 | .01  .00  .00   .26  -.06  -.25  -.2  .05  .05 |  245.3   50.7     .3
igr  n/a| .00 -.01  .00   .05  -.04  -.29  -.1  .05  .04 |    -.4    1.3     .4
jpl  37 |-.01  .00 -.01  -.15  -.17  -.08   .4  .09  .09 |  780.8   58.5     .4
ngs  55 | .01 -.08 -.02   .36   .57  -.64   .1  .14  .13 |    6.4   -9.5   81.1
sio  118| .00  .00  .02  -.30   .00  -.28   .3  .08  .06 |     .0     .0     .0

Table 2.0893.4   GPS week: 0893   Day: 4   MJD: 50499.0

CENT STA|  DX   DY   DZ    RX    RY    RZ  SCL  RMS WRMS |   TOFT  TDRFT    RMS
--------|------------------------------------------------|---------------------
cod  86 | .00  .01 -.01  -.30   .29  -.05  -.2  .07  .04 |   13.5  -15.2     .4
emr  31 | .00 -.01  .00   .32  -.11   .57  -.1  .10  .10 |  306.4   38.8     .4
esa  56 | .01 -.02 -.01   .29   .03   .28   .2  .18  .08 |   18.8 -111.9     .9
gfz  47 | .00  .00  .00   .23  -.10   .03  -.2  .05  .05 |  306.2   39.8     .4
igr  n/a| .01 -.02 -.01   .09  -.16  -.51   .0  .10  .06 |   -4.6    8.7    4.1
jpl  37 |-.01  .02  .00  -.28  -.19  -.13   .2  .07  .07 |  849.4   46.2     .3
ngs  55 | .01 -.06  .00  -.01   .18  -.56  -.2  .17  .17 |    6.4   -8.2   80.5
sio  118|-.01  .02  .03  -.24   .02  -.22   .6  .08  .07 |     .0     .0     .0

Table 2.0893.5   GPS week: 0893   Day: 5   MJD: 50500.0

CENT STA|  DX   DY   DZ    RX    RY    RZ  SCL  RMS WRMS |   TOFT  TDRFT    RMS
--------|------------------------------------------------|---------------------
cod  78 | .00  .01  .00  -.41   .26   .19  -.4  .06  .04 |  -10.6  -16.7     .6
emr  29 | .00 -.01  .01   .23   .16  -.25  -.1  .10  .10 |  335.9   38.9     .5
esa  52 | .00 -.02 -.01   .22  -.06   .20  -.1  .10  .08 |  -21.8 -113.9     .8
gfz  46 | .00  .00  .00   .28  -.26   .02  -.3  .06  .06 |  336.3   38.9     .5
igr  n/a| .00  .00  .00  -.04  -.11  -.17   .0  .04  .04 |    -.2     .7     .3
jpl  37 | .01  .01 -.01  -.20  -.10   .10   .5  .07  .06 |   17.7  -28.7     .5
ngs  54 | .01 -.07 -.02   .62   .34  -.42   .1  .16  .16 |   -6.3   -6.9   84.3
sio  117|-.01  .01  .03  -.26  -.07  -.20   .5  .09  .07 |     .0     .0     .0

Table 2.0893.6   GPS week: 0893   Day: 6   MJD: 50501.0

CENT STA|  DX   DY   DZ    RX    RY    RZ  SCL  RMS WRMS |   TOFT  TDRFT    RMS
--------|------------------------------------------------|---------------------
cod  75 |-.01  .01  .00  -.24   .22   .34  -.4  .06  .04 |  -11.3   27.9     .3
emr  26 | .01 -.01 -.01   .04  -.08   .31  -.1  .10  .10 |  381.4   79.2     .3
esa  49 | .02 -.02  .00  -.42  -.03   .26   .0  .18  .10 |  -15.5  -27.6     .6
gfz  44 | .00  .01  .01   .33  -.05  -.35  -.2  .06  .06 |  381.2   80.3     .3
igr  n/a| .02 -.01 -.01  -.07   .01   .24  -.2  .08  .06 |   -9.5   14.0     .4
jpl  36 | .00  .01  .00   .03  -.32  -.05   .3  .06  .06 |  381.5   79.5     .3
ngs  52 | .02 -.06 -.04   .06   .70   .15  -.3  .17  .16 |  -10.5   18.0   80.7
sio  109| .00  .02  .02  -.16   .07  -.54   .4  .08  .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 3.0893.0   GPS week: 0893   Day: 0   MJD: 50495.0

               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
------|--------------------------------------|--------------------------------------
   1  |   4   9   7   3   5   4  13   7    2 |    5  12   8   7   9   4  18   7    6
   2  |   3   7   5   3   3   5  16   7    2 |    4   7   7   6   5   4   9   6    5
   3E |   5  10  15   4  10   8  24   6    4 |    4  13   9   7   9   5  23   8    5
   4  |   3   8   3   4   4   4  12   6    2 |    5  10   7   5   6   4  13   8    4
   5  |   3   5   7   2   2   3   9   6    2 |    4   7   6   5   4   4  11   9    4
   6E |   4  25  15   5   5   5  15   9    4 |    6  14  17   8   9   7  16  11    7
   7E |   4  13  13   6   5   4  19  11    4 |   14  19  18  15  17  14  30  19   14
   9  |   2   7   7   3   4   2   6   7    2 |    4   8   8   5   6   5   9   8    5
  10  |   3   7   7   4   5   4  12   6    2 |    4   9  10   7   7   4  15   6    5
  14  |   5   9  15   6   5   4  11   6    3 |    3   9  15   4   5   4  11   7    3
  15  |   3   9   7   4   8   4  11  10    2 |    4   8  11   5   7   4  13  13    5
  16  |   5   7   9   4   4   4  10   6    2 |    4   7   7   5   5   5  12   5    4
  17  |   3   9   4   4   4   4  13   6    2 |    5  12   7   6   8   5  13   7    6
  18E |   4   8 ---   4   8   5  18  16    4 |    7  14 ---  10  11  10  16  16    9
  19  |   3   8   7   5   4   3  10  18    3 |    4   7   7   6   5   4   8  16    4
  21  |   4   7   5   4   5   3  11   4    2 |    5   9   9   7   8   5  15   5    5
  22  |   3  10   4   4   3   3  11   5    2 |    4   9   9   6   7   5  11   8    6
  23  |   6   8   5   5   7   6  12   6    3 |    7   7   6   7   7  11  10  11    7
  24  |   4   7   4   3   7   5  11   4    2 |    4   9   6   6  10   4  12   7    5
  25  |   4   8   6   5   4   4   7   4    2 |    4   8   7   7   7   4  12   7    7
  26E |   4  10   8   4   3   4  10   7    2 |    4  10  10   6   7   6  11   8    6
  27  |   2   8   5   2   2   3  16 ---    2 |    4   8   8   6   5   5  13 ---    5
  29E |   3   7   9   6   3   4  11   5    2 |   16  20  21  17  19  18  22  17   17
  30  |   4   8   5   5   2   3  10   7    2 |    4   8   8   5   5   5  10   9    4
  31E |   6  10  14   6   6   4  23   8    4 |   16  18  19  18  17  16  25  16   16
------|--------------------------------------|--------------------------------------
 RMS  |   4  10   9   4   5   4  13   8      |T   6  11  10   8   9   7  15  10    7
 WRMS |   3  10   7   4   4   4  12   7      |NE  4   8   8   5   6   5  12   8    5
 MEDI |   4   8   7   4   4   4  11   6      |MD  4   9   8   6   7   5  13   8    5

Table 3.0893.1   GPS week: 0893   Day: 1   MJD: 50496.0

               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 |   4  10  13   5   4   4  14   8    3 |    3  10  14   7   6   4  14   6    4
   2  |   4   9   8   4   3   5  18   7    3 |    3   6   6   4   4   4  11   5    4
   3E |   5  13  16   4  11   6  28   7    4 |    3  13  12   6  10   4  24   6    4
   4  |   4   6   6   3   4   4  15   5    2 |    4   7   7   4   7   3  15   9    6
   5  |   2   4   5   4   4   3   7   5    2 |    2   6   7   5   5   4   7   5    4
   6E |   5  26  17   5   4   5  17   6    4 |    6  19  18   9  10   7  16  10    7
   7E |   3  16  10   4   5   3  16   4    3 |   13  16  18  14  14  15  21  14   13
   9  |   1   8  12   3   3   3   9   5    2 |    3  10  12   4   7   4  10   6    4
  10  |   5   6   4   3   6   3  12   4    2 |    3   8  10   5   7   3  13   6    6
  14  |   5   8  11   4  11   3  16   4    2 |    3  10  16   4  11   4  14   7    4
  15  |   5   8   7   4   6   3  11   4    2 |    3   7   9   4   7   3  11   5    5
  16  |   3   7   9   3   5   3   8   5    2 |    7  14   8   8  10   8  15  10    8
  17  |   4   9  11   3   5   3  11   5    2 |   11  12   8  12  11  11  18  10   12
  18E |   5   9  11   7   8   5  18   5    3 |    9  12  17   7  11  10  19  11    8
  19  |   5   9   6   4   4   3  10   7    2 |    3   9   6   6   6   5   9   6    4
  21  |   2  10   4   5   5   5  10   5    2 |    3  11   7   5   7   4  14   4    5
  22  |   3  10   7   3   9   5  13   6    2 |    3   6   8   4   9   6  11   5    4
  23  |   5  12  19   5   8   6  10   5    3 |    5  11   6   6   6   7  10   7    5
  24  |   5   7   4   4   7   3  11   7    2 |    4   8   6   5   7   4  11   7    6
  25  |   6   9   7   4   5   2  10   3    2 |    3   9   8   5   7   4  10   5    5
  26E |   4  12  11   4   5   4  14   7    3 |   10  16  12  11   9  11  14   5    9
  27  |   3  10   5   4   4   4  15   7    2 |    2   9   5   4   4   4  11   6    3
  29E |   4  10  12   7   6   4  18   4    3 |   12  14  12  12  13  11  22  12   12
  30  |   2   5   8   2   3   3  10   5    2 |    3   5   7   4   5   3   8   6    4
  31E |   5  13  11   6   9   4  29   6    3 |   12  19  16  14  15  13  21  13   13
------|--------------------------------------|--------------------------------------
 RMS  |   4  11  10   4   6   4  15   5      |T   6  11  10   7   8   7  14   7    7
 WRMS |   4  11   8   4   6   4  15   5      |NE  4   9   8   5   7   5  11   6    5
 MEDI |   4   9   9   4   5   4  13   5      |MD  3  10   8   5   7   4  14   6    5

Table 3.0893.2   GPS week: 0893   Day: 2   MJD: 50497.0

               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   4   8   4   6   5  17   8    3 |   10  11   9  12  12   8  28   9    9
   2  |   4   6   6   3   3   4  17   6    2 |    3   6   6   6   4   5  10   6    4
   3E |   5  11  10   6   6   7  28   9    4 |    3  12  11   7  10   7  24   7    5
   4  |   3   8   7   2   5   3  13   5    2 |    4   8   5   5   7   3  13   6    4
   5  |   4   5   7   3   3   3   9   5    2 |    3   5   9   4   5   4   9   7    4
   6E |   5  13  13   7   5   4  17  10    3 |    7  18  13   9  10   8  15  11    8
   7E |   6  16  13   5   9   4  16   6    3 |   11  14  14  12  14  12  20  11   11
   9  |   4   9   5   5   4   3  14   5    2 |    4  10   8   6   8   4  17   8    4
  10  |   3   7   6   3   4   4  15   4    2 |    4   8   8   5   7   4  13   6    5
  14  |   8  14  36  11   6  10  14   7    6 |    4  10  27   7   7  12  11   7    5
  15  |   3   9   5   4   4   3  13   4    2 |    4   5   8   3   7   5  14   5    4
  16  |   3   9   8   4   5   4  15   5    2 |    4  10  10   6   7   5  13   4    4
  17  |   6  10   5   4   5   5  22  10    3 |    6  13   6   8   9   6  18  14    8
  18E |   5   9   7   6   6   4  16   6    3 |    7  12  16   9  11  13  16  10    8
  19  |   3   8   9   5   6   4  12   7    2 |    3  10   8   5   9   5   9   7    4
  21  |   5  10   9   5   5   4  21  10    3 |    5   9  11   7   7   4  17   9    4
  22  |   5   6   6   4   4   4  11   4    2 |    3   7   8   5   7   4  15   6    3
  23  |  16  27  87 ---  14  11 ---  29   11 |   28  31  65 ---  26  38 ---  44   32
  24  |   3   6   6   2   6   3  11   5    2 |    5   8   5   5   7   3  12   4    4
  25  |   5   5   5   5   5   5  10   5    2 |    3   7   6   6   7   5  10   4    4
  26E |   4  12  17   5   5   4  12   6    3 |   10  11  17   7  12   9  19  12   10
  27  |   3   5   7   4   5   5  15   9    2 |    3   6   7   5   7   5   9   7    4
  29E |   5   7   8   4   5   4  20   5    3 |   10  15  12  13  13  11  21  12   12
  30  |   3   7   7   3   3   3   9   5    2 |    3   6   6   4   5   4   9   6    4
  31E |   6   8  12   5   8   6  21   6    3 |   14  17  21  18  16  14  31  15   16
------|--------------------------------------|--------------------------------------
 RMS  |   6  10  21   5   6   5  16   9      |T   8  12  17   8  10  10  16  12    9
 WRMS |   4   9   8   4   5   5  16   6      |NE  7  11  18   5   9  10  12  12    8
 MEDI |   5   8   7   4   5   4  15   6      |MD  4  10   9   6   7   5  15   7    4

Table 3.0893.3   GPS week: 0893   Day: 3   MJD: 50498.0

               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 |   4   6   7   3   3   4  14   9    2 |    7   9  11   6   7   7  18   7    7
   2  |   4   8   7   2   2   4  14   6    2 |    5   7   7   7   5   4  12   6    6
   3E |   4  10   7   3   4   5  18   7    3 |    4  11  10   5   6   6  22   7    6
   4  |   3   5  10   4   3   4  13   5    2 |    4   8  10   5   8   5  17   7    8
   5  |   3   4   7   3   3   2  12   6    2 |    4   6   7   6   4   5   9   6    5
   6E |   5  11  13   4   2   6  13   7    3 |   10  16  10  13  10  11  12  10   10
   7E |   5  13  10   6   4   5  15   7    3 |   11  14  13  11  11  10  24  14   11
   9  |   4  11  11   3   5   3   8   7    3 |    4  12   8   6   7   5   9   8    6
  10  |   4   7   4   3   4 ---  16   6    3 |    4   9   7   5   7 ---  14   8    7
  14  |   6   8 ---   4   5   4 ---   8    3 |    0   0 ---   0   0   0 ---   0  ---
  15  |   5   7  11   6   3   4  11   5    3 |    4   8  14   6   5   4  19   6    8
  16  |   4   7  12   4   3   5  13   5    3 |    4   9  12   5   5   6  14   5    5
  17  |   5   8   7   3   3   6  11   7    2 |    9  10  10  10   8   5  12   9   10
  18E |  10  16  75   7   9  37  19  16    9 |    9  11  35   6   8  47  14  14   12
  19  |   4   6  10   4   3   5   9   5    2 |    5   7  10   6   6   6   9   5    6
  21  |   4   9   4   6   4   4  14   6    2 |    4   9   8   6   6   4  17   5    6
  22  |   3   9   7   4   4   4  11   4    2 |    4   8   9   6   7   6  11   8    8
  23  |  13  12  23   8  11   7  17  18    5 |   34  44  29  30  39  44  27  50   41
  24  |   4   8   7   4   5   7  15   5    3 |    4   9   6   6   7   6  15   7    7
  25  |   5   7   5   5   3   4  11   6    2 |    3   7   6   8   5   6  12   9    9
  26E |   4   8  11   6   3   4  12   5    3 |    6  10  13  10  10   5  15   9   10
  27  |   3   5   7   4   2   4  14   7    2 |    5   5   7   5   6   5  15   7    7
  29E |   4   9   8   3   3   4  17   5    3 |    8  13  12  10  11   9  20  13   12
  30  |   4   7   6   5   2   3  14   4    2 |    3   5   8   5   4   5   9   6    5
  31E |   5   8  13   5   7   4  13   6    3 |   19  20  24  20  20  19  27  18   20
------|--------------------------------------|--------------------------------------
 RMS  |   5   9  18   5   5   9  14   8      |T   9  13  13  10  11  15  16  13   12
 WRMS |   4   9   8   5   4   9  13   6      |NE  9  13  11   9  11  12  14  13   12
 MEDI |   4   8   8   4   3   4  14   6      |MD  5   9  10   6   7   6  15   8    8

Table 3.0893.4   GPS week: 0893   Day: 4   MJD: 50499.0

               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 |   4   8  10   5   6   4  12   9    3 |    4  10  12   9   9   6  17   8    5
   2  |   3  10   4   6   4   5  12   7    3 |    4   9   4   6   6   5  12   6    4
   3E |   6  13   7   4  10   7  22   8    4 |    3  14  13   7  12   7  21   7    7
   4  |   6  12   6   5   4   4  13   8    3 |    3  14  10   6   8   5  15   8    5
   5  |   4   9   6   4   4   3  14   8    3 |    4  10   7   7   6   4  11   8    6
   6E |   6   9  11   5   4   5  21   5    3 |    4   9  11   7   7   4  14   4    6
   7E |   6  18   9   8   9   5  21  10    4 |    7  14  13  11  16   8  27  11    9
   9  |   2   6   8   4   3   3   9   5    2 |    4  11   7   7   8   5  11   5    5
  10  |   4   9   5   7   7 ---   9   5    3 |    3   9   6   6   8 ---  11   6    4
  14  |  21   9  22  12  15   8  21  12    6 |   17  19  23  23  19  19  22  22   19
  15  |   6   8   9   6   5   4  16   6    3 |    5   7  11   5   7   5  15   4    4
  16  |  18 ---  73 ---  36  23 ---  12   10 |    0 ---   0 ---   0   0 ---   0  ---
  17  |   7   7  10   4   3   5  17   7    3 |    5  10   9   6   9   7  14   6    6
  18E |   4  13 ---   3   9   6 ---   9    3 |    3  11 ---   6   7   6 ---   9    5
  19  |   5   7   7   4   8   7  13   6    3 |    4  10   8   7  10   7   9   7    7
  21  |   3   8   5   5   5   4  15   6    2 |    3   7   6   5   8   5  13   7    5
  22  |   3   9   8   3   7   5   9   6    2 |    3  13   7   6   8   5  14   7    6
  23  |  11  16  19   6  10  11  26  16    6 |   54  55  35  50  50  64  49  63   54
  24  |   4   8   6   4   5   6  12   7    2 |    3  11   5   5   8   5  14   9    5
  25  |   5   8   6   5   3   4  13   8    3 |    3  11   5   8   7   5  12   6    5
  26E |   4   9   9   5   7   5  10   5    3 |    6   8  11   6   9   7  12   6    5
  27  |   3   7   7   4   6   6  19   8    3 |    4  11   6   6   8   7  16   6    6
  29E |   4   7  11   4   5   4  22   5    3 |   10  11  10  10  13   7  23   7    7
  30  |   4   9   6   3   5   6  16   6    3 |    4   8   7   6   5   5  10   7    5
  31E |   5  10   9   5   7   6  23   7    3 |   15  19  18  17  17  15  26  16   16
------|--------------------------------------|--------------------------------------
 RMS  |   7  10  18   5  10   7  17   8      |T  12  15  12  13  14  15  18  15   13
 WRMS |   4  10   8   5   6   7  17   7      |NE 14  17  12  14  14  17  17  17   15
 MEDI |   4   9   8   5   6   5  15   7      |MD  4  11   9   7   8   6  14   7    6

Table 3.0893.5   GPS week: 0893   Day: 5   MJD: 50500.0

               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 |   4   8   9   4   4   4  12   9    3 |    4  10  10   9   7   5  16   5    5
   2  |   3   9   5   3   3   4   8  10    2 |    3   8   6   6   5   6  11   7    6
   3E |   5  11   8   5   4   5  22  12    4 |    3  13  10   6   7   6  23  10    5
   4  |   5   6   8   4   4   7  13   7    3 |    4  10   7   5   7   7  16   6    6
   5  |   2   4   6   4   3   4   9   8    2 |    3   6   7   6   4   4  12   7    4
   6E |   5  11   7   6   3   5  11   8    3 |    4  11   9   7   6   5  13   8    5
   7E |   6  17   9   6   5   4  19   7    4 |    8  13  14  10   9   9  25  11    9
   9  |   3   8  10   5   4   3  11   5    3 |    4  12   7   7   5   5  12   6    4
  10  |   5   6   6   6   3   4  16   5    3 |    3   9   8   8   6   4  14   8    7
  14  |  16  18  20  13  11  16  26  16    7 |   36  33  29  40  27  42  40  35   35
  15  |   7   6   9   5   4   5  11  10    3 |    5  13  15   7   9   5  14   6    6
  16  |   6  11  11   6   6   5  16  20    4 |    6   9  10   7   6   5   9   6    5
  17  |   6  10   7   6   3   4  14   5    3 |    5  10  11   7   8   7  12  11    9
  18E |   5  10  12   6   5   5  16   6    3 |    3  12  11   7   7   5  12   4    5
  19  |   2   8  10   5   2   5  13   7    3 |    3   9   7   5   4   5   9   6    4
  21  |   6   8   5   5   3   5  14   8    3 |    5   8   9   6   6   5  16   9    7
  22  |   5   9  12   6   3  13  12  13    4 |    4   9  11   6   6  11  10  11    5
  23  |  12  12  20   8   8  11  21  14    5 |   55  64  46  65  58  69  68  69   60
  24  |   4   9   8   4   3   5  12   5    3 |    3  11   6   6   5   7  12   7    5
  25  |   6   7   7   8   4   5   8   5    3 |    5   9   8   8   5   8  12   6    7
  26E |   4  12  13   6   4   4  18   4    3 |    6  11  13   9   9   7  14   8    7
  27  |   4   8   5   4   4   4  15   6    3 |    4  10   7   4   5   3  11   5    5
  29E |   5   9  11   5   4   7  24   7    4 |    9  12  12   7   8   8  25  11    8
  30  |   3   7   7   6   3   4  10   8    2 |    3   6   8   5   4   5  11   7    4
  31E |   5   8   9   5   4   5  22   7    3 |   15  16  20  17  16  15  26  15   16
------|--------------------------------------|--------------------------------------
 RMS  |   6  10  10   6   4   7  16   9      |T  14  17  14  16  14  17  21  17   15
 WRMS |   4  10   8   6   4   6  16   7      |NE 16  19  15  19  16  20  22  20   17
 MEDI |   5   9   9   5   4   5  14   7      |MD  4  10  10   7   6   6  13   7    6

Table 3.0893.6   GPS week: 0893   Day: 6   MJD: 50501.0

               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 |   4   8  14   5   7   3  23   7    3 |    4  10  16   7   9   5  17   8    5
   2  |   5   8  16   4   3   6  16   9    3 |    5   8   8  11   7   6  11   9    6
   3E |   5  15  10   6   9   6  29   9    4 |    4  14  11   9  10   6  28   9    5
   4  |   5   8  15   4   6   4  13   5    3 |    4  11   6   5  10   4  14   5    4
   5  |   4   6   7   5   3   5   9  10    3 |    4   7   9   8   6   8   9  10    5
   6E |   5  13  11   4   7   5  14   8    3 |    3  10  11   8   7   5  15   6    5
   7E |   6  12  14   8   6   8  21   8    4 |   11  16  15  14  13  11  25  14   12
   9  |   4   9  19   6   4   3  11   9    3 |    5  13   9   7   8   6  13   9    6
  10  |   4   8   8   5   7   4  12   7    3 |    4   8   7   5   6   4  11   8    4
  14  |   6  10  10   7   6   6  13   8    3 |   24  33  26  34  30  27  28  34   29
  15  |  10  16  65   6  17  17  12  11    8 |   29  32  45  27  31  18  30  29   26
  16  |   5   8   8   8   6   6  13  15    4 |    6   8   9   8   6   6   9   8    6
  17  |   5   9   9   3   6   4  11   7    3 |    6  12   8   7   9   7  12   8    7
  18E |   5  12  10   4   5   7  13   6    3 |    3  11   7   5   6   5  12   6    4
  19  |   4   8   8   5   5   4   8   4    2 |    3   8   6   7   6   5   8   9    5
  21  |   4  12   6   8   7   5  12   7    3 |    4  10   7   6   7   4  10   7    4
  22  |   6   7   8   4   9   6  13   7    3 |    5  10  10   8  12  11  13   9    7
  23  |  10  15  18  11  16  11  33  15    6 |   43  42  35  47  39  54  42  54   44
  24  |   4   8  14   5   6   4  11   6    3 |    3  10   7   8   8   4  15   7    5
  25  |   6   8   7   7   8   5   8   8    3 |    4   9   5   6  10   6  10   6    4
  26E |   5  12  12   5   7   4  13   8    3 |    8   9  15   7   7   6  14   8    6
  27  |   4   8   6   3   4   3  17   7    3 |    4   7   7   5   6   5  14   8    5
  29E |   6   6  13   5   5   4  32   6    4 |    6  12  12   8  12   7  27   8    7
  30  |   3   6  12   7   4   4  11   8    3 |    5   6   8   6   5   7   9   9    5
  31E |   5  17  21   4   9   5  25   7    4 |   16  21  17  16  15  15  22  17   15
------|--------------------------------------|--------------------------------------
 RMS  |   6  10  18   6   8   6  17   8      |T  12  16  15  15  14  14  18  16   13
 WRMS |   4  10  10   6   6   6  16   7      |NE 14  17  16  16  15  16  17  18   15
 MEDI |   5   8  11   5   6   5  13   8      |MD  5  10   9   8   8   6  14   8    5

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 4.0893   GPS week: 0893   MJD: 50495.0-50501.0

CENT| CLK EPO  |      BRUS      |      USUD      |      WILL      |
----|----------|----------------|----------------|----------------|
cod | cod 2399 |U  31   26   68 |U  16   19   29 |   18   14   28 |
emr | emr 2384 |   31   26   71 |   18   21   29 |U  19   14   31 |
esa | esa 2132 |   37   28   74 |U  17   22   31 |   20   14   35 |
gfz | gfz 1165 |   31   28   74 |U  18   23   38 |   20   17   34 |
igr | igr 2380 |   32   26   71 |   18   20   31 |   20   14   31 |
igs | igs 2400 |   30   25   69 |   16   19   29 |   17   12   30 |
jpl | jpl 2343 |U  32   25   69 |U  17   20   31 |   18   12   30 |

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 5.0893.0   GPS week: 0893   Day: 0   MJD: 50495.0

CENT| CLK EPO  |      BRUS      |      USUD      |      WILL      |
----|----------|----------------|----------------|----------------|
cod | cod 2400 |   27   23   53 |   22   23   33 |   17   12   27 |
emr | emr 2396 |   27   22   54 |   24   25   35 |   18   11   33 |
esa | esa 2113 |   28   26   66 |   20   26   35 |   23   18   38 |
gfz | gfz 1185 |   27   27   49 |   21   27   39 |   18   14   30 |
igr | igr 2400 |   28   25   57 |   24   24   41 |   26   15   35 |
igs | igs 2400 |   24   23   54 |   20   23   34 |   18   12   28 |
jpl | jpl 2382 |   26   22   53 |   24   23   35 |   17   11   27 |

Table 5.0893.1   GPS week: 0893   Day: 1   MJD: 50496.0

CENT| CLK EPO  |      BRUS      |      USUD      |      WILL      |
----|----------|----------------|----------------|----------------|
cod | cod 2400 |   33   30   74 |   13   18   28 |   19   14   28 |
emr | emr 2398 |   33   28   75 |   17   19   28 |   20   12   32 |
esa | esa 2201 |   35   32   80 |   17   21   28 |   20   14   34 |
gfz | gfz 1186 |   30   31   78 |   17   20   38 |   21   18   28 |
igr | igr 2399 |   36   26   74 |   16   19   28 |   21   12   30 |
igs | igs 2400 |   32   28   74 |   15   17   30 |   18   12   28 |
jpl | jpl 2374 |   34   27   73 |   15   18   30 |   18   12   27 |

Table 5.0893.2   GPS week: 0893   Day: 2   MJD: 50497.0

CENT| CLK EPO  |      BRUS      |      USUD      |      WILL      |
----|----------|----------------|----------------|----------------|
cod | cod 2400 |   34   25   66 |   15   18   26 |   19   14   31 |
emr | emr 2398 |   34   24   68 |   17   21   27 |   20   14   31 |
esa | esa 2210 |   39   27   66 |   16   22   30 |   23   14   33 |
gfz | gfz 1132 |   31   32   81 |   16   21   32 |   20   14   38 |
igr | igr 2390 |   32   22   67 |   16   23   26 |   20   12   31 |
igs | igs 2400 |   33   24   66 |   15   19   26 |   18   13   32 |
jpl | jpl 2370 |   30   26   70 |   15   19   27 |   19   12   32 |

Table 5.0893.3   GPS week: 0893   Day: 3   MJD: 50498.0

CENT| CLK EPO  |      BRUS      |      USUD      |      WILL      |
----|----------|----------------|----------------|----------------|
cod | cod 2400 |   30   25   69 |   13   19   27 |   17   14   26 |
emr | emr 2400 |   31   25   72 |   17   21   28 |   18   14   30 |
esa | esa 2092 |   38   30   72 |   18   24   30 |   19   11   28 |
gfz | gfz    0 |    0    0    0 |    0    0    0 |    0    0    0 |
igr | igr 2399 |   31   26   73 |   16   20   28 |   18   14   30 |
igs | igs 2400 |   30   25   71 |   15   19   28 |   17   12   27 |
jpl | jpl 2271 |   36   26   69 |   15   21   31 |   18   13   28 |

Table 5.0893.4   GPS week: 0893   Day: 4   MJD: 50499.0

CENT| CLK EPO  |      BRUS      |      USUD      |      WILL      |
----|----------|----------------|----------------|----------------|
cod | cod 2400 |   28   25   71 |   18   19   36 |   17   13   27 |
emr | emr 2304 |   28   28   75 |   18   21   30 |   18   16   28 |
esa | esa 2106 |   38   26   82 |   19   22   37 |   21   16   37 |
gfz | gfz 1135 |   30   26   87 |   16   23   46 |   22   15   34 |
igr | igr 2272 |   32   25   74 |   22   22   40 |   18   16   32 |
igs | igs 2400 |   27   25   73 |   19   19   35 |   18   12   27 |
jpl | jpl 2272 |   34   27   67 |   17   20   33 |   18   12   28 |

Table 5.0893.5   GPS week: 0893   Day: 5   MJD: 50500.0

CENT| CLK EPO  |      BRUS      |      USUD      |      WILL      |
----|----------|----------------|----------------|----------------|
cod | cod 2400 |   35   24   71 |   15   19   26 |   19   13   30 |
emr | emr 2400 |   34   25   76 |   17   19   27 |   21   14   32 |
esa | esa 2198 |   42   30   79 |   14   22   26 |   22   13   42 |
gfz | gfz 1180 |   38   24   73 |   20   24   39 |   21   15   39 |
igr | igr 2400 |   33   28   79 |   15   18   25 |   20   12   32 |
igs | igs 2400 |   32   26   74 |   14   19   25 |   19   11   34 |
jpl | jpl 2368 |   34   23   75 |   17   21   32 |   20   12   33 |

Table 5.0893.6   GPS week: 0893   Day: 6   MJD: 50501.0

CENT| CLK EPO  |      BRUS      |      USUD      |      WILL      |
----|----------|----------------|----------------|----------------|
cod | cod 2391 |   28   26   71 |   15   18   24 |   14   17   28 |
emr | emr 2392 |   31   26   72 |   16   20   25 |   14   17   28 |
esa | esa 2003 |   34   26   71 |   16   19   28 |   13   10   34 |
gfz | gfz 1170 |   30   28   68 |   16   23   31 |   17   22   33 |
igr | igr 2397 |   28   25   67 |   15   16   24 |   11   18   30 |
igs | igs 2399 |   28   26   69 |   14   17   24 |   12   15   30 |
jpl | jpl 2367 |   30   23   71 |   15   19   25 |   12   15   30 |

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