Subject: [IGSREPORT-2829] Wk 0861 IGS Final Orbits
From: AC Coordinator / NRCan GSDivision
Date: Tue, 23 Jul 1996 13:24:51 PDT

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IGS Electronic Report    Tue Jul 23 13:24:51 PDT 1996      Message Number 2829
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Author: AC Coordinator / NRCan GSDivision
Subject: Wk 0861 IGS Final Orbits

Final IGS Orbit Combination - Week 0861   (Jul 07, 1996 - Jul 13, 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 (IGS08617.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:

 IGS08610-6.SP3  IGS GPS ephemeris files for days 0-6, week 0861 in SP3 format.
 IGS08617.ERP    Earth rotation parameters (ERP) associated with ephemerides.
 IGS08617.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. Centre clock weights were determined using the following non-SA satellites:
   PRN15 and PRN28.

4. Higher clock RMS for NGS on day 2 (Jul 9) was caused by clock jumps on 
   PRN26.  PRN26 was set unusable until 2:27 due to maintenance
   (ref. NANU 116-96191).

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

                 Day  (Date)       |   PRN    | Centres 
                -------------------+----------+---------
                 0-6 (Jul 7-Jul 13)|   ALL    |   ESA   

   Note that starting with week 860, Centres with clock RMS higher than 2 ns are
   excluded from the clock combination if they bias the combined clock solution.
   This will make IGS clock precision more comparable to the best ACs.

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 process:

          Day (Date) |   TIME   |  PRN  | Centres  | Reason
         ------------+----------+-------+------------------------------
          1 (Jul 08) | 00:00:00 |  19   |   ALL    | Modeling problems     
          3 (Jun 10) | 00:00:00 |  16   |   ALL    | Modeling problems (a)
          5 (Jun 12) | 00:00:00 |  14   |   ALL    | Modeling problems (b)

   (a) Due to unrealistic long arc RMS, PRN16 was excluded from the long arc 
       evaluation on day 3 for ACs that submitted solutions for this satellite
       (COD,IGR,IGS,JPL,SIO);
   (b) Due to unrealistic long arc RMS, PRN14 was excluded from the long arc 
       evaluation on day 5 for ACs that submitted solutions for this satellite
       (COD,ESA,IGR,IGS,JPL,NGS,SIO);

7. 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.

8. Starting with GPS week 0860, several modifications have taken place in the
   IGS combination.  Please refer to the IGS Final Report for GPS week 0860
   (IGS Report #2817 and IGS Mail #1391) for a description of these changes.

ORBIT COMBINATION AND EVALUATION STATISTICS:

For a complete description of tables and statistics, please refer to the report
posted on CDDIS (IGS08617.SUM).

Table 1: Week 0861 summary.                       (Jul 07, 1996 - Jul 13, 1996)

Table 1.0861.a   GPS week: 0861   MJD: 50271.0-50277.0

         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  69 | .00  .01  .00  -.58   .02   .18  -.1  .08  .06 |   -4.5    2.2    1.4
        | .01  .00  .00   .10   .09   .12   .1           |    4.9   10.8
emr  30 | .00  .00  .01   .79   .33   .49  -.1  .13  .13 |  100.0   22.7     .7
        | .00  .01  .02   .08   .12   .17   .2           |  643.3   27.3
esa  50 | .00  .00  .00   .18  -.15   .19   .1  .09  .08 |  -10.6   -7.2    3.0
        | .00  .01  .01   .21   .13   .11   .1           |   11.6   22.3
gfz  46 | .01 -.01 -.01  -.03  -.11  -.33  -.1  .11  .10 |  100.0   32.4     .6
        | .01  .01  .01   .07   .06   .15   .1           |   72.8    7.8
igr  n/a| .00  .00 -.01  -.27  -.24  -.04  -.1  .08  .06 |     .3    -.6     .9
        | .01  .01  .00   .23   .14   .19   .1           |    1.9    2.5
jpl  37 | .00  .01  .01   .04   .07   .06   .0  .07  .07 |  100.0   32.7     .6
        | .00  .00  .00   .08   .11   .10   .1           |   72.7    8.0
ngs  48 |-.01 -.05 -.01   .39  -.42  -.09   .0  .13  .13 |  100.0  100.0 6017.6
        | .01  .01  .01   .30   .10   .19   .1           | 1465.8 2975.3
sio  109| .00  .00 -.01  -.06   .19  -.36   .2  .09  .09 |     .0     .0     .0
        | .01  .00  .01   .14   .10   .17   .1           |     .0     .0

Table 1.0861.b   GPS week : 0861   MJD: 50271.0-50277.0

         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   3   4   3   3 |
   2  |   4   4   3   4   4   3   3 |
   3  |   4   4   4   4   4   3   3 |
   4  |   3   3   3   3   3   3   3 |
   5E |   3   3   3   3   3   3   2 |
   6  |   3   3   3   3   3   3   3 |
   7  |   4   3   3   4   4   3   3 |
   9  |   3   3   3   3   3   3   3 |
  14E |   3   4   3   7   3  17   4 | Modeling problems on day 5.
  15  |   2   3   4   5   4   5   3 |
  16E |   4   5   4  32   5   4   4 | Modeling problems on day 3.
  17  |   3   3   3   3   2   3   3 |
  18  |   4   3   3   3   4   4   3 |
  19  |  11   5   3   3   3   2   2 | Modeling problems on day 0.
  20  |   0   0   0   0   0   0   0 |
  21E |   3   4   4   5   4   4   4 |
  22E |   6   3   3   4   3   3   3 |
  23E |   4   6   6   4   5   3   4 |
  24  |   3   3   3   3   4   3   3 |
  25  |   3   3   2   2   3   3   3 |
  26  |   3   3   4   3   3   3   3 |
  27  |   6   3   2   3   3   2   3 |
  28  |   3   3   3   4   3   3   3 |
  29  |   4   3   3   4   3   4   3 |
  31  |   3   3   3   4   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 2.0861.0   GPS week: 0861   Day: 0   MJD: 50271.0

CENT STA|  DX   DY   DZ    RX    RY    RZ  SCL  RMS WRMS |   TOFT  TDRFT    RMS
--------|------------------------------------------------|---------------------
cod  69 | .00  .01  .00  -.58  -.02   .37  -.1  .08  .06 |   -6.5    -.3    1.4
emr  30 | .00  .00 -.01   .87   .48   .33   .1  .15  .15 | 1095.4   27.0     .6
esa  49 | .01  .00  .01   .59   .02   .23   .0  .12  .10 |  -24.3   -3.4    3.2
gfz  47 | .01 -.01 -.01  -.13   .01  -.27  -.2  .08  .08 | 1095.9   27.6     .5
igr  n/a| .01  .00  .00  -.55  -.38  -.08  -.3  .05  .05 |    1.2   -1.5     .6
jpl  37 |-.01  .02  .01  -.06  -.03  -.02   .1  .07  .07 | 1095.7   27.2     .6
ngs  49 | .00 -.05 -.03   .65  -.42  -.32  -.1  .14  .14 |    1.1   -6.8   78.5
sio  108|-.01  .00  .00  -.26   .00  -.31   .0  .12  .12 |     .0     .0     .0

Table 2.0861.1   GPS week: 0861   Day: 1   MJD: 50272.0

CENT STA|  DX   DY   DZ    RX    RY    RZ  SCL  RMS WRMS |   TOFT  TDRFT    RMS
--------|------------------------------------------------|---------------------
cod  70 | .00  .01  .00  -.74  -.13   .32  -.2  .06  .05 |   -1.3    3.5    1.3
emr  29 | .00 -.01  .01   .83   .31   .31   .0  .13  .12 | -489.4  -36.5     .7
esa  48 | .00  .00  .00   .34  -.06   .09   .1  .09  .08 |   -2.5  -15.0    2.9
gfz  47 | .02 -.02 -.02  -.04  -.10  -.54  -.3  .12  .12 | 1128.2   32.5     .6
igr  n/a| .00  .00  .00  -.52  -.30  -.31  -.1  .05  .05 |     .1    -.4     .6
jpl  37 | .00  .01  .01   .14   .13   .00   .1  .05  .05 | 1127.6   32.6     .6
ngs  46 |-.02 -.04 -.01   .59  -.27  -.38  -.1  .12  .12 |    3.4   -3.2   78.1
sio  109| .00  .00 -.02  -.17   .14  -.16   .2  .08  .08 |     .0     .0     .0

Table 2.0861.2   GPS week: 0861   Day: 2   MJD: 50273.0

CENT STA|  DX   DY   DZ    RX    RY    RZ  SCL  RMS WRMS |   TOFT  TDRFT    RMS
--------|------------------------------------------------|---------------------
cod  70 | .01  .01  .00  -.65   .01   .18  -.2  .07  .06 |     .6  -11.1    1.4
emr  31 | .00  .01  .02   .83   .15   .37  -.3  .14  .13 | 1156.3   27.4     .7
esa  50 | .00 -.01  .00   .04  -.06   .35  -.1  .09  .08 |   -9.0  -46.9    3.3
gfz  45 | .02 -.01 -.01  -.10  -.10  -.53   .0  .12  .11 | 1157.2   27.6     .6
igr  n/a| .00 -.01  .00  -.21  -.16   .04   .0  .06  .06 |    2.7   -3.6    1.6
jpl  37 |-.01  .01  .01   .09  -.07  -.04   .0  .05  .05 | 1157.7   27.7     .6
ngs  49 |-.01 -.05 -.02   .58  -.31  -.08   .2  .12  .12 |-3880.0 7873.015920.0
sio  108|-.01  .00 -.01  -.06   .28  -.18   .2  .06  .06 |     .0     .0     .0

Table 2.0861.3   GPS week: 0861   Day: 3   MJD: 50274.0

CENT STA|  DX   DY   DZ    RX    RY    RZ  SCL  RMS WRMS |   TOFT  TDRFT    RMS
--------|------------------------------------------------|---------------------
cod  69 | .00  .01  .00  -.44  -.02   .09  -.1  .13  .05 |   -4.3    -.9    1.6
emr  30 | .00  .01  .02   .82   .34   .68  -.3  .12  .11 | 1188.1   33.8     .5
esa  50 | .00  .00  .00  -.02  -.15   .07   .1  .09  .08 |    1.1  -10.2    2.3
gfz  45 | .02  .00  .00   .08  -.18  -.31   .0  .14  .14 | 1190.5   33.7     .5
igr  n/a| .02 -.01 -.01  -.23  -.16   .11   .0  .13  .06 |   -1.5    2.2     .6
jpl  37 |-.01  .01  .01   .11   .18   .10  -.1  .12  .13 | 1189.8   34.0     .6
ngs  48 |-.01 -.05  .00   .06  -.50  -.03   .0  .12  .12 |   -3.5    2.2   79.6
sio  110| .00  .01 -.01  -.03   .27  -.40   .2  .09  .09 |     .0     .0     .0

Table 2.0861.4   GPS week: 0861   Day: 4   MJD: 50275.0

CENT STA|  DX   DY   DZ    RX    RY    RZ  SCL  RMS WRMS |   TOFT  TDRFT    RMS
--------|------------------------------------------------|---------------------
cod  69 | .00  .00  .00  -.60   .07   .15  -.1  .07  .06 |   -1.8    5.2    1.4
emr  30 | .00  .00  .02   .79   .23   .59  -.1  .13  .12 | 1225.2   45.6     .7
esa  50 | .01 -.01 -.01   .17  -.24   .08   .2  .08  .07 |    2.5   19.4    2.7
gfz  47 | .02 -.01 -.01  -.05  -.12  -.18  -.1  .12  .11 | 1227.0   45.2     .5
igr  n/a| .01  .00 -.01  -.05  -.11   .19  -.1  .05  .05 |   -2.7    3.2     .6
jpl  37 |-.01  .02  .01   .02   .18   .24   .1  .05  .05 | 1225.9   45.8     .6
ngs  48 |-.01 -.04  .00   .57  -.47  -.02  -.1  .13  .13 |   -4.7   10.7   79.2
sio  111| .00  .00 -.01  -.09   .15  -.67   .2  .08  .08 |     .0     .0     .0

Table 2.0861.5   GPS week: 0861   Day: 5   MJD: 50276.0

CENT STA|  DX   DY   DZ    RX    RY    RZ  SCL  RMS WRMS |   TOFT  TDRFT    RMS
--------|------------------------------------------------|---------------------
cod  68 | .01  .01  .00  -.48   .06   .12   .0  .09  .06 |   -4.2   -4.8    1.5
emr  30 | .00  .01  .01   .63   .49   .72   .0  .16  .14 | 1262.3   22.1     .7
esa  50 |-.01  .01 -.01   .06  -.37   .22   .1  .11  .09 |  -17.3   17.2    4.0
gfz  47 | .00 -.01 -.01   .06  -.12  -.19  -.2  .07  .07 | 1264.6   21.7     .6
igr  n/a| .00  .00 -.01   .04  -.10   .02   .1  .07  .05 |    2.1   -2.8     .8
jpl  37 | .00  .01  .01  -.04   .12   .08  -.1  .08  .06 | 1264.0   22.1     .7
ngs  48 |-.03 -.05 -.01  -.11  -.52   .18   .1  .18  .16 |   -4.0   -1.8   78.0
sio  111| .00  .00  .00   .18   .28  -.44   .2  .09  .09 |     .0     .0     .0

Table 2.0861.6   GPS week: 0861   Day: 6   MJD: 50277.0

CENT STA|  DX   DY   DZ    RX    RY    RZ  SCL  RMS WRMS |   TOFT  TDRFT    RMS
--------|------------------------------------------------|---------------------
cod  68 | .00  .01  .00  -.53   .17   .04  -.1  .06  .05 |  -14.3   23.5    1.5
emr  31 |-.01 -.01 -.02   .79   .29   .42   .1  .10  .09 | 1294.2   39.4     .7
esa  50 | .00 -.01 -.01   .10  -.17   .29   .1  .08  .08 |  -24.6  -11.3    2.7
gfz  46 |-.01 -.02  .01  -.06  -.14  -.31  -.2  .08  .07 | 1296.2   38.4     .6
igr  n/a| .00  .00 -.01  -.41  -.46  -.28  -.2  .11  .10 |     .1   -1.5     .6
jpl  37 | .00  .02  .01   .02  -.03   .03   .0  .04  .04 | 1295.8   39.5     .6
ngs  49 | .00 -.05 -.01   .39  -.45   .00   .0  .13  .13 |   -3.9    4.8   78.6
sio  107| .01  .01  .00   .04   .22  -.34   .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 3.0861.0   GPS week: 0861   Day: 0   MJD: 50271.0

               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  |   7  14   4   5   3   5  16   7    3 |    6  14   6   9   8   6  11  13    4
   2  |   7  10  15   9   6   5  13   9    4 |    7  14  12  19   7   7  13  11    8
   3  |   4   7   9   8   3   7  17  11    4 |    5   9   9  13   5   8  11  15    4
   4  |   5   8  10   6   6   5  11   7    3 |    3   8  10  11   6   6  11  11    4
   5E |   6  11  10   6   6   4   7   9    3 |    6  11  13  11   7   6  13  16    6
   6  |   4   9  12   7   4   4   8   7    3 |    6   9  11   9   5   5  12   9    5
   7  |   5   7   9  10   5  11  11   6    4 |    4   9   9   9   7   5  10   9    4
   9  |   9   8   8   4   8   4  10   8    3 |    9   9  10  12  11   7  14  12    5
  14  |   5  15  11   5   4   5  11  10    3 |   19  25  19  22  19  18  26  21   19
  15  |   4  10   8   4   4   4   9   7    2 |    4  16   9  10   5   5  11  11    4
  16  |   6  17  13   6   7   5  17   6    4 |    7  12  11  12   8   5  15  17    6
  17  |   4  10   8   6   4   4  13   7    3 |    4  13   7   8   7   6  16  14    5
  18  |   8  16  19   6   4   6  12   9    4 |    4  16  18  11   6   5  12   9    4
  19  |  26  44 ---  21  10  20  32  16   11 |    6  34 ---   2   5   6   1   1    4
  20  | --- --- --- --- --- --- --- ---    0 |  --- --- --- ---   2 --- --- ---
  21E |   5  11  11   9   5   5  10  10    3 |   10  14  11  16  10  10  17  18    9
  22E |   8  15   9   8   6   7  10  35    6 |    8   9   9  13   6   7  10  27    6
  23  |   9   8  15   9   7   5  14   6    4 |   35  31  26  29  28  33  26  24   29
  24  |   5   7  11   6   5   5  11   8    3 |    4   8   7  11   8   6  10  12    5
  25  |   6   8   9   5   5   4   7   9    3 |    8  10   8  13   7   9  11  13    7
  26  |   4  12   7   4   7   3  10   7    3 |    6  15   9   7   9   6  11  14    5
  27  |   6  23  29   7   6   7  16  11    6 |    6  28  19  15  10   7  24  12   10
  28  |   6   7   5   6   3   3  10  12    3 |    6   8   9   9   5   7  14  18    5
  29  |   4  15   7   5   5   7  19   9    4 |    4  11   9  10   7   7  18  10    5
  31  |   4  11  15   7   3   6   9  11    3 |    4  10  14  12   5   6  11  12    4
------|--------------------------------------|--------------------------------------
 RMS  |   8  15  12   8   5   7  14  12      |T   9  16  12  13   9   9  14  14    8
 WRMS |   6  15  10   8   5   7  14  12      |NE 10  16  12  13   9  10  14  13    8
 MEDI |   6  11  10   6   5   5  11   9      |MD  6  12  10  11   7   6  12  13    5

Table 3.0861.1   GPS week: 0861   Day: 1   MJD: 50272.0

               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  |   5  16   8   8   5   3  12   8    3 |    5  15   7   8   7   5  13   9    4
   2  |   3  10  10  16  10   4  13   8    4 |    5  10  10   9   8   5  17  10    5
   3  |   5  11   8  21   3   5  16  10    4 |    5   9   7  25   6   5  13   9    5
   4  |   5   8   8  15   4   4   8   4    3 |    4   7   7  12   5   4  10   9    4
   5E |   6   7  10  11   4   5  11   8    3 |    5   8  14  10   8   5  12  10    6
   6  |   5   8   8   8   4   6  13   7    3 |    6   9   8   9   6   5  16   9    5
   7  |   6   7   8  13   5   6  11   5    3 |    5  10  10  11   5   3  13   7    5
   9  |   5  11   8   9   4   3   9   9    3 |    6  11  10   9   8   5  11   9    6
  14E |   5  18  12   9   5   4  12   9    4 |   23  30  28  24  23  22  31  20   23
  15  |   6  13   9   8   7   6   9  10    3 |    8  11   7   9   7   5  12  15    5
  16  |   7  18  19  16   4   6  14   6    5 |   10  15  17  14   9   8  19  20    9
  17  |   3  12   8   8   5   4   8   7    3 |    4  12   8   8   6   5  12   8    4
  18  |   4  14   4  10   4   4   9   6    3 |    4  12   9   8   7   5  12  10    5
  19  |   7  28   5   8   5   4 ---  10    5 |    8  26   8  14   8   8 ---  14    8
  20  | --- --- --- --- --- --- --- ---    0 |  --- --- --- --- --- --- --- ---
  21E |   6  13  10  21   7   8  16   6    4 |   11  19   8  28  12   9  25  16   10
  22E |   5   4  13  10   5   5  12  10    3 |    7  10  15  19   7   6  14  16    7
  23E |  20  13  14  15   5   9  15  14    6 |   43  51  41  57  49  57  51  54   50
  24  |   4   9   6  13   6   4   8   5    3 |    4   7   7   9   5   5   9   8    4
  25  |   4   7   7  11   4   4   8  10    3 |    6   8   9  15   5   7  11   8    5
  26  |   4  13   3   6   5   5  12  12    3 |    5   9   6   8   9   4  20  17    5
  27  |   3  12   5  10   4   3   8   7    3 |    6  16  11  11   8   6  14   9    6
  28  |   5   7   6   8   5   4  14   6    3 |    5   8   8  10   6   5  14   8    5
  29  |   3  12   7  10   4   4  19   6    3 |    5   7  11   8   6   5  14   9    5
  31  |   8  11   7  10   6   3  15   7    3 |    5  10   9  10   6   4  12  10    4
------|--------------------------------------|--------------------------------------
 RMS  |   6  13   9  12   5   5  12   8      |T  11  16  13  17  13  13  18  16   12
 WRMS |   5  12   8  12   5   5  12   8      |NE  5  11   9  11   6   5  13  10    5
 MEDI |   5  12   8  10   5   4  12   8      |MD  5  10   9  10   7   5  13  10    5

Table 3.0861.2   GPS week: 0861   Day: 2   MJD: 50273.0

               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  |   8  15   8   9   6   3   6   8    3 |    4  13  12   8   8   6  10  93    4
   2  |   3  11   8  20   9   4  10   6    3 |    5  11   8  10   9   6  15  82    6
   3  |   7  16   6  19   5   5  13   6    4 |    5  13   7  22   8   6  13  88    4
   4  |   5   9  10  13   4   3  11   5    3 |    5   9   8  11   8   5  10  83    4
   5  |   7  10   5   9   5   5  11   7    3 |    4  10   9  10   7   7  13  93    5
   6  |   3   9  13   8   4   4  11   7    3 |    4   9  13  10   8   5  14  91    4
   7  |   5   9   5  13   5   4   9   5    3 |    4  10   9  12   7   5  10  87    5
   9  |   6  12   9  12   4   4  12   7    3 |    8  11  10  12   8   7  13  87    5
  14E |   5  20   8   7   3   3   9   6    3 |   27  35  31  28  27  28  27  97   27
  15  |   8  20   7  11   5   4  16   5    4 |    6  17   9   8   7   5  17  89    3
  16E |   7  22  12  13   5   7  14   5    4 |    8  14  12  15   9   7  22  79    9
  17  |   4  16   6  11   4   3  12   5    3 |    4  17   8   8   7   4  16  86    5
  18  |   6  15   7   8   6   5   9   5    3 |    4  11   8   9   7   4   9  84    4
  19  |   5  17   6   9   5   3   9   6    3 |    5  14   6  11   7   5  15  85    5
  20  | --- --- --- --- --- --- --- ---    0 |  --- --- --- --- --- --- --- ---
  21E |   7  14   7  22   8   5  13   8    4 |   10  15  14  15  12  11  17  95    8
  22  |   3   7  13  12   4   5  12   6    3 |    5   8  13  16   7   5  12  91    5
  23E |  17  22  12  14  11  10  17   9    6 |   37  58  38  49  41  51  41  67   44
  24  |   6   8   9  11   6   4  10   5    3 |    5   8  10   8   7   6   9  85    4
  25  |   5   6   7   7   9   4   6   5    2 |    5   9  12   9   9   8  12  87    6
  26  |  10  18   7   9   6   4  13   8    4 |    6  19  10  12   7   5  14  87    7
  27  |   4   9   5   8   7   4   9   5    2 |    5  13   9  12   9   6  14  82    7
  28  |   6   8   8  13   8   4  12   5    3 |    4   7   8  11   6   8  15  92    4
  29  |   4  11  12   9   5   4  18   5    3 |    5   8   9   9   6   4  12  87    5
  31  |   5  13   7  12   7   3  10   8    3 |    5  12   6  10   7   5  10  91    4
------|--------------------------------------|--------------------------------------
 RMS  |   7  14   9  12   6   5  12   6      |T  10  18  13  16  12  13  16  87   11
 WRMS |   6  13   8  11   6   5  12   6      |NE  4  11   9  11   7   5  12  87    4
 MEDI |   6  13   8  11   5   4  11   6      |MD  5  12   9  11   8   6  14  87    5

Table 3.0861.3   GPS week: 0861   Day: 3   MJD: 50274.0

               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  |   6  15   4  14   7   4   7   6    3 |    5  14   6  13   9   7  11  10    5
   2  |   4  10   6  24  13   8  13   8    4 |    6  11   8  12  13   9  17  15    6
   3  |   5  13   6  19   5   9  10   8    4 |    9  10   9  25   9   7  13  13    8
   4  |   5  10   7  12   6   4  11   7    3 |    5  11   8  12   6   7  13  13    6
   5  |   5  12   7  13   5   5  12   8    3 |    5  13  10  12   8   7  13   8    6
   6  |   5   7  11   9   5   4   7   9    3 |    8   8  11   8   6   7  14  11    7
   7  |   6  11   5  18   6   7  11   6    4 |    6  10   7  12   7   7  10   9    5
   9  |   5   9   8   8   6   5   7   7    3 |    5  11  13  11   9   8  13  12    7
  14E |  11  16  23  21  11  13  23  11    7 |   69  76  56  78  63  71  75  67   67
  15  |   6  23  12  16   7   6  15   5    5 |    5  18  11  13   7   6  16  11    5
  16E |  57 --- --- ---  59  49 ---  24   32 |    0 --- --- ---   0   0 ---   0  ---
  17  |   4  12   5   9   4   5   8   6    3 |    6  12   6   7   7   4  14   9    5
  18  |   7  17   7   7   8   3  10   8    3 |    4  14   8   9  10   5  14  10    5
  19  |   4  10   6  10   5   5   6   7    3 |    4  10   8   9   8   5  11  12    5
  20  | --- --- --- --- --- --- --- ---    0 |  --- --- --- --- --- --- --- ---
  21E |   6  16   7  26   7   5  12   6    5 |   10  16   9  25  10   9  18  10    8
  22  |   5   6  10  16   6   6  10   8    4 |    5   7  10  19   9   7  14  10    6
  23E |   6  13   9  11   7   7  14   6    4 |   30  32  29  35  34  32  31  33   30
  24  |   8  10   5  10   2   7  13   7    3 |    7   9   7  11   5   7  17  11    4
  25  |   3   6   4   6   6   4   8   7    2 |    5  10  10  12   9   9  13   9    7
  26  |   4  10   5   5   4   4  13   9    3 |    5  12  10   8   9   7  18  13    7
  27  |   5   6   5  10   7   4   7   8    3 |    7  11  11  14  12   7  14  12    8
  28  |   8   8   9  14   9   6  13   9    4 |    6   8   7  15   7   7  15  11    6
  29  |   5  11  11   8   5   8  22   7    4 |    4   7   9   9   7  10  24  14    7
  31  |   5  14   9  15   6   8  15   5    4 |    4  12   8  13   9   6  12  13    6
------|--------------------------------------|--------------------------------------
 RMS  |  13  12   9  14  13  12  12   9      |T  16  20  15  22  17  17  22  18   16
 WRMS |   5  11   8  14   6  13  12   9      |NE  5  11   9  12   8   7  14  11    5
 MEDI |   5  11   7  12   6   6  11   7      |MD  5  11   9  12   9   7  14  11    6

Table 3.0861.4   GPS week: 0861   Day: 4   MJD: 50275.0

               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  |   8  15   9  21   5   6   8   9    4 |    4  14  10  24   6   6  14  11    6
   2  |   6  11   6  21  11   5  17  10    4 |    6  12  10  13  10   7  18  15    6
   3  |   6  16   6  13   3   7  22   6    4 |    6  13   8  19   5   6  22   6    5
   4  |   5  14   4  13   7   4   9 ---    3 |    7  12   7  11   8   5  12 ---    6
   5  |   6   9   7  12   6   5  16   5    3 |    6  10  10  11   7   9  19   7    6
   6  |   6   9   9   6   5   3   9   7    3 |    4   9  12   8   6   7  14   8    5
   7  |   7  15   6  14   6   5  12   9    4 |    6  14   7  13   8   7  16   8    5
   9  |   6   8   8   7   4   4   8   7    3 |    9   9  11  11   8   6  16   7    6
  14E |   5  14  10   9   4   4   9   8    3 |   47  46  43  48  43  46  48  46   46
  15  |   5  28   8   9   4   5  10   8    4 |    6  22   8   8   7   6  13   8    5
  16E |  18   8   8  13  10   8  18  10    5 |   15  17  17  24  19  15  33  17   17
  17  |   3  14   4   5   3   4   9   6    2 |    5  12   8   4   6   4  16   8    5
  18  |   8  18   6  13   4   3  11   7    4 |    7  13  12  13  11   8  18  10    8
  19  |   4   6   6  10   6   4   8   9    3 |    5  12   7  10   5   5  13  12    4
  20  | --- --- --- --- --- --- --- ---    0 |  --- --- --- --- --- --- --- ---
  21E |   5  17   9  15   6   4  18   5    4 |    7  16   9  20   8   7  23   8    7
  22  |   8   9   9  14   6   4  10   4    3 |    5   9  10  19   6   5  16   9    5
  23E |   9  14  18  13   3   9  19  11    5 |   21  29  25  28  23  30  31  30   25
  24  |   5  13   9  17   5   5  13   8    4 |    7  11   7  15   6   6  16   8    5
  25  |   5   9   6   8   7   4  10   7    3 |    7  12   9  10   8   8  18   9    7
  26  |   4  11   5   5   5   3  14   9    3 |    5  11   8   7   6   6  20  10    5
  27  |   5   6   6   8   5   4   9  11    3 |    6  10   9  12   8   6  15  15    6
  28  |   8  12   7   7   3   3  10   4    3 |    6   9   7  10   6   5  15   7    4
  29  |   4  10   6   7   4   4  17   7    3 |    6   6   8   7   6   6  15   8    5
  31  |   5  15   8  10   4   3   9   7    3 |    5  12   7   9   6   6  14   8    4
------|--------------------------------------|--------------------------------------
 RMS  |   7  13   8  12   5   5  13   8      |T  12  16  13  17  12  13  20  14   12
 WRMS |   6  12   7  11   5   5  13   8      |NE  6  12   8  12   7   6  16   9    5
 MEDI |   6  13   7  11   5   4  10   7      |MD  6  12   9  12   7   6  16   8    6

Table 3.0861.5   GPS week: 0861   Day: 5   MJD: 50276.0

               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  18   6   9   4   4  10   7    3 |    6  14   7  11  10   5  11   6    4
   2  |   5  12   7   8   7   5  12   7    3 |    7  13  11  14   9   6  16  10    6
   3  |   6  18   8   6   4   4  15   5    3 |    7  15   7  10   6   5  12   5    4
   4  |   6  17   5   9   9   6   7   6    3 |    7  14   5   8   9   6  11   7    6
   5  |   6  11  11   7   6   6  13   9    3 |    6  12  10   9  12   9  11  13    7
   6  |   5   7  11   4   6   5  12   6    3 |    6   7  10   7  10   6  13   9    5
   7  |   5  19   9   5   6   6   8   8    3 |    6  14   9   9   8   6  10   7    5
   9  |  11  13   7   6   2   6   8   7    3 |    9  10  10  10   6   7  12   9    5
  14E |  35 ---  29 ---  20  28  60  27   17 |    0 ---   0 ---   0   0   0   0  ---
  15  |  11  35   9   7   9   6  14   7    5 |    9  28   9   8   8   7  12   8    5
  16E |   6  12  10  12   8   7  16  12    4 |   11  12  11  14   9   7  19  10    8
  17  |   5  17   7   6   3   4   9   5    3 |    4  14   5   8   6   4  16   8    6
  18  |   6  23  11   8   4   5  11   4    4 |    5  18  11   9   8   7  18   8    6
  19  |   5   7   5   7   6   4   6   6    2 |    6  10   6  10   4   4  10   5    4
  20  | --- --- --- --- --- --- --- ---    0 |  --- --- --- --- --- --- --- ---
  21E |   4  17  10  12   6   6  13  10    4 |    7  19  10  12  10   9  18  11    8
  22  |   4   7  11   6   5   4  21   5    3 |    5   8  10  11   7   6  16   8    6
  23E |   5  13  15   6   6   6  12   4    3 |   15  20  19  14  17  15  19  14   14
  24  |   8  15   7   9   7   5  11   8    3 |    9  11   6  11   7   6  11   5    5
  25  |   6  10   6   6   3   4  13   7    3 |    8  11  11  10   7   7  16   9    8
  26  |   3  19   6   6   3   3  10   9    3 |    6  13   7   7   6   5  12   7    5
  27  |   5   8   6   5   5   5   9   7    2 |    7  10   9  10   8   5  16   7    6
  28  |   7  13  10   4   4   4  16   7    3 |    8  11   7   7   7   4  17   6    4
  29  |   6  13   8   6   5   5  22   7    4 |    7  13   7   7   9   8  22   8    6
  31  |   5  17  13   8   3   4  15   6    4 |    5  13   7   9   6   5  13   5    5
------|--------------------------------------|--------------------------------------
 RMS  |   9  16  11   7   7   8  18   9      |T   7  14   9  10   8   6  14   8    6
 WRMS |   6  14   9   7   5   6  16   9      |NE  6  13   8   9   7   6  14   7    5
 MEDI |   6  13   9   6   6   5  12   7      |MD  7  13   9  10   8   6  13   8    6

Table 3.0861.6   GPS week: 0861   Day: 6   MJD: 50277.0

               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   6   5   7  18   3  14   8    3 |    6  13   6   8   7   6  13   9    5
   2  |   5   8   9  12  10   4  15   8    3 |    7  13  10  14  10   9  19  12    8
   3  |   5   9   8   8   6   5  13   7    3 |    7  12   7  11   6   7  14   5    7
   4  |   5  12   6   5   8   4  16   6    3 |    6  13   6  10   8   6  14   6    5
   5  |   6   7   6   6   9   4   6   6    2 |    8   8   9  11  11   8  16   8    8
   6  |   6   7  10   5  16   4  14   7    3 |    8   9   9   8  10   8  15   8    6
   7  |   5  10   8   7  10   7  10   6    3 |    5  12   7   9   9   7  14   7    5
   9  |   5   8  12   4   8   5  10   8    3 |    8  11  12  11   8   7  13   6    7
  14E |   5  20  13   6   5   4   7   7    4 |    2  13   3   3   4   3   2   2    2
  15  |   6  12  10   7   9   4  13   6    3 |    8  13   7   8   8   7  13   5    6
  16E |   8  11   8  14  18   6  20   9    4 |   15  10  13  15  24   9  20  12   11
  17  |   4  10   8   7   8   4  16   5    3 |    5  13   8   9   7   6  20   9    5
  18  |   6  11   9   8  12   4   9   5    3 |    9  12  10  15  14   8  12   8    7
  19  |   4   7   5   7   7   5  11   6    2 |    7  12   8   9   7   6  13   8    5
  20  | --- --- --- --- --- --- --- ---    0 |  --- --- --- --- --- --- --- ---
  21E |   4  18   7  12  14   4  15   8    4 |   11  18  11  15  14  11  18  11   10
  22  |   5   6  11   6   7   4  10   6    3 |    6  11  11  11   7   7  16   8    7
  23E |  13  11  12   7  12   5  13   9    4 |   25  20  21  22  23  23  24  19   21
  24  |   5  13   6  12  10   2  10   7    3 |    5  15   7   9   8   6  13   7    6
  25  |   5   8   5   8  15   4  11   8    3 |   10  10  12  11   9  12  16  12   10
  26  |   4   6   6   9   5   4   9   9    3 |    8  12   9   9   9   7  15  10    6
  27  |   5   7   5   7  21   4  11   7    3 |    7  10   9  10  18   6  15   9    6
  28  |   6   8   8   7   9   3  13   6    3 |    8   9   6   9   5   7  18   6    5
  29  |   3  11   7   5   9   5  17   6    3 |    8  11   8   8  10   7  20   7    6
  31  |   3   7   8   7   7   3  14   9    3 |    5   9   7   6   7   7  14  11    5
------|--------------------------------------|--------------------------------------
 RMS  |   6  10   8   8  11   4  13   7      |T   9  12   9  11  11   8  15   9    7
 WRMS |   5   9   8   7  10   4  13   7      |NE  7  11   8  10   9   7  15   8    6
 MEDI |   5   9   8   7   9   4  13   7      |MD  8  12   9  10   9   7  15   8    6

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 4.0861   GPS week: 0861   MJD: 50271.0-50277.0

CENT| CLK EPO  |      BRUS      |      USUD      |      WILL      |
----|----------|----------------|----------------|----------------|
cod | cod 2290 |U  49   33   80 |U  49   38  100 |   43   27   64 |
emr | emr 2271 |   41   26   67 |   35   28   83 |U  30   14   41 |
esa | esa 2063 |  108   67  161 |U  72   79  185 |   77   49  155 |
gfz | gfz 1138 |   37   25   67 |U  35   29   81 |   31   15   44 |
igr | igr 2245 |   42   32   72 |   36   34   93 |   29   18   52 |
igs | igs 2302 |   39   24   65 |   34   28   81 |   29   15   41 |
jpl | jpl 2291 |   38   23   64 |U  32   27   80 |   27   14   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 5.0861.0   GPS week: 0861   Day: 0   MJD: 50271.0

CENT| CLK EPO  |      BRUS      |      USUD      |      WILL      |
----|----------|----------------|----------------|----------------|
cod | cod 2301 |    0    0    0 |   43   32   83 |   40   27   59 |
emr | emr 2304 |    0    0    0 |   30   20   61 |   28   14   33 |
esa | esa 2012 |    0    0    0 |   70  109  216 |   75   39  124 |
gfz | gfz 1152 |    0    0    0 |   25   18   53 |   34   15   37 |
igr | igr 2296 |    0    0    0 |   31   18   57 |   28   14   34 |
igs | igs 2304 |    0    0    0 |   28   20   60 |   28   16   35 |
jpl | jpl 2303 |    0    0    0 |   28   19   56 |   26   14   34 |

Table 5.0861.1   GPS week: 0861   Day: 1   MJD: 50272.0

CENT| CLK EPO  |      BRUS      |      USUD      |      WILL      |
----|----------|----------------|----------------|----------------|
cod | cod 2289 |   46   37   83 |   59   50  103 |   45   27   72 |
emr | emr 2287 |   36   32   70 |   43   42  101 |   28   12   41 |
esa | esa 2084 |  101   68  137 |   68   63  189 |   88   36  163 |
gfz | gfz 1152 |   37   35   72 |   52   54  113 |   35   13   52 |
igr | igr 2291 |   33   30   64 |   44   43   98 |   28   15   42 |
igs | igs 2292 |   36   30   64 |   44   43   95 |   31   14   46 |
jpl | jpl 2288 |   34   28   59 |   43   43   95 |   28   12   42 |

Table 5.0861.2   GPS week: 0861   Day: 2   MJD: 50273.0

CENT| CLK EPO  |      BRUS      |      USUD      |      WILL      |
----|----------|----------------|----------------|----------------|
cod | cod 2300 |   62   37   84 |   44   31   94 |   48   32   68 |
emr | emr 2288 |   45   22   57 |   27   20   70 |   30   17   41 |
esa | esa 2086 |   72   49  100 |   67   75  151 |   79   56  155 |
gfz | gfz 1152 |   43   23   49 |   22   13   57 |   27   17   41 |
igr | igr 2289 |   62   57  104 |   47   56  137 |   35   33   98 |
igs | igs 2303 |   48   25   64 |   28   21   72 |   31   19   41 |
jpl | jpl 2294 |   44   22   63 |   25   20   69 |   27   16   38 |

Table 5.0861.3   GPS week: 0861   Day: 3   MJD: 50274.0

CENT| CLK EPO  |      BRUS      |      USUD      |      WILL      |
----|----------|----------------|----------------|----------------|
cod | cod 2271 |   51   33   76 |   43   28   77 |   41   24   61 |
emr | emr 2207 |   41   25   69 |   33   23   60 |   31   16   43 |
esa | esa 2025 |  106   54  127 |   73   59  169 |   67   67  189 |
gfz | gfz 1104 |   30   20   55 |   30   18   46 |   22   17   45 |
igr | igr 2285 |   40   20   64 |   28   21   56 |   26   15   43 |
igs | igs 2304 |   38   22   65 |   30   21   56 |   25   13   40 |
jpl | jpl 2290 |   36   20   65 |   28   20   55 |   24   13   39 |

Table 5.0861.4   GPS week: 0861   Day: 4   MJD: 50275.0

CENT| CLK EPO  |      BRUS      |      USUD      |      WILL      |
----|----------|----------------|----------------|----------------|
cod | cod 2296 |   49   27   67 |   53   28   98 |   44   28   57 |
emr | emr 2303 |   40   23   65 |   32   19   72 |   31   14   39 |
esa | esa 2104 |   95   53  120 |   85   94  176 |   61   45  160 |
gfz | gfz 1152 |   32   22   56 |   33   21   63 |   28   18   31 |
igr | igr 2302 |   37   21   62 |   31   18   69 |   28   17   37 |
igs | igs 2304 |   40   21   57 |   34   18   72 |   28   18   36 |
jpl | jpl 2288 |   36   20   59 |   31   18   68 |   28   17   35 |

Table 5.0861.5   GPS week: 0861   Day: 5   MJD: 50276.0

CENT| CLK EPO  |      BRUS      |      USUD      |      WILL      |
----|----------|----------------|----------------|----------------|
cod | cod 2269 |   38   31   86 |   56   42  119 |   47   27   77 |
emr | emr 2206 |   38   24   71 |   43   27   92 |   33   14   52 |
esa | esa 2026 |  155  106  287 |   70   57  151 |   86   52  144 |
gfz | gfz 1104 |   38   22   79 |   44   28  103 |   37   15   57 |
igr | igr 2302 |   32   22   67 |   37   25   88 |   28   13   50 |
igs | igs 2304 |   32   22   68 |   40   28   92 |   31   14   52 |
jpl | jpl 2287 |   35   21   69 |   37   22   88 |   30   13   49 |

Table 5.0861.6   GPS week: 0861   Day: 6   MJD: 50277.0

CENT| CLK EPO  |      BRUS      |      USUD      |      WILL      |
----|----------|----------------|----------------|----------------|
cod | cod 2301 |   47   32   82 |   38   46  117 |   33   21   53 |
emr | emr 2303 |   44   26   70 |   31   38  112 |   27   11   33 |
esa | esa 2102 |  100   56  117 |   68   82  225 |   78   41  140 |
gfz | gfz 1152 |   41   26   82 |   25   32  102 |   32   12   34 |
igr | igr 1949 |   40   26   62 |   28   40  115 |   28   12   30 |
igs | igs 2304 |   41   25   71 |   28   38  109 |   26   12   35 |
jpl | jpl 2288 |   41   26   71 |   26   36  109 |   27   12   34 |

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