Subject: [IGSREPORT-4011] Wk 0915 IGS Final Orbits
From: AC Coordinator / NRCan GSDivision
Date: Wed, 6 Aug 1997 6:58:39 PDT

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IGS Electronic Report    Wed Aug  6  6:58:39 PDT 1997      Message Number 4011
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Author: AC Coordinator / NRCan GSDivision
Subject: Wk 0915 IGS Final Orbits

Final IGS Orbit Combination - Week 0915   (Jul 20, 1997 - Jul 26, 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 (IGS09157.SUM).

SOFTWARE:

  The weighted average software used was originally developed by T. Springer
and G. Beutler in 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 G., Kouba J. and T. Springer, 1995, Combining the orbits of the IGS 
   Analysis Centers, Bulletin Geodesique, 69, pp 200-222.

   Kouba J., Mireault Y. and F. 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.

   Kouba J. and Y. Mireault, 1996, IGS Analysis Coordinator Report, 
   International GPS Service for Geodynamics (IGS) 1995 Annual Report, 
   pp. 45-76.

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.

  Starting with GPS wk 0894, IGS LOD combinations were implemented in the 
Final IGS solutions.  AC LOD biases with respect to Bulletin A are estimated
using Bulletin A most recent 3 weeks (21 days), i.e. up to 5 days prior to
the last non-predicted day of Bulletin A.  AC LOD biases are removed and the
new AC bias-free LODs are used to compute a weighted IGS LOD which in turn
is integrated into IGS UT1-UTC. The starting UT1-UTC value is chosen as
Bulletin A fifth day prior to its last non-predicted day. Both IGS LOD and 
UT1-UTC values are printed in the IGS Final erp file.

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

 IGS09150-6.SP3  IGS GPS ephemeris files for days 0-6, week 0915 in SP3 format.
 IGS09157.ERP    Earth Rotation Parameters (ERP) and their rates as well as
                 Universal Time (UT1-UTC) and Length Of Day (LOD) associated 
                 with IGS ephemerides.
 IGS09157.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
                  ----+---------
                  0-3 |  15 
                  4   |  all (a)
                  5-6 |  15 

  (a) A different strategy for clock alignment on day 4 was chosen since the
      alignment using PRN15 gave inapropriate weights and unrealistic clock RMS.
      We used the following strategy: a chosen reference centre (in this case 
      EMR) is aligned to the broadcast GPS clocks using all satellites; 
      all other centres are then aligned to that reference centre. The clock 
      weights are computed from the absolute deviation of centre's aligned clock 
      corrections with respect to the unweighted mean. 

6. New clock offsets and drifts were estimated for centres showing reference
   clock resets.  Note that only the first clock offset and drift are output
   to the summary file.  However, the clock combination and the listed RMS
   include all the clock segments.  In summary, the following clock
   shifts/resets were noticed and accounted for:

                  Day | Centre |  Time  |  Jump
                  ----+--------+--------+-------------
                   4  |  GFZ   | ~14:30 | ~ -1850.1 ns

7. 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
                  ----+--------+---------------
                  0-3 |  EMR   |  ALL (High Rotations - see Table 2)
                   2  |  NGS   |  ALL (High Rotations - see Table 2)
                   5  |  EMR   |  ALL (High Rotations - see Table 2)
                   3  |  COD   |  14
                   6  |  ESA   |  16

8. 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 (Jul 22) | 00:00:00 |  18   |   All    | Modeling problems (a)
          3 (Jul 23) | 00:00:00 |  14   |   All    | Modeling problems (b)
          4 (Jul 24) | 00:00:00 |  16   |   All    | Modeling problems (c)
          5 (Jul 25) | 00:00:00 | 19,23 |   All    | Modeling problems

   (a) Satellite PRN18 was excluded from long arc evaluation on day 2 for
       all centres due to unrealistic RMS.

   (b) Satellite PRN14 was excluded from long arc evaluation on days 0,3,6 for
       all centres due to unrealistic RMS.

   (c) Satellite PRN16 was excluded from long arc evaluation on days 3,5-6 for
       all centres due to unrealistic RMS.

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

10. PRN13 was launched on 23 July 1997/wk915 day 3 at 03:43 UT.  It will reside
    in slot F-5 (ref. NANU 088-97206).  A Follow up NANU will be sent once the
    navigation payload on PRN13 is usable.

ORBIT COMBINATION AND EVALUATION STATISTICS:

For a complete description of tables and statistics, please refer to the report
posted on CDDIS (IGS09157.SUM).

Table 1: Week 0915 summary.                       (Jul 20, 1997 - Jul 26, 1997)

Table 1.0915.a   GPS week: 0915   MJD: 50649.0-50655.0

         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  78 | .00  .01 -.01  -.20  -.01   .34  -.2  .14  .05 |    3.2   -2.3     .5
        | .00  .00  .00   .09   .11   .19   .1           |    9.5   14.8
emr  29 | .01 -.02  .01   .36  -.02  1.04  -.2  .11  .10 | 1162.0   71.2     .4
        | .01  .01  .01   .23   .09   .53   .1           |  827.2   34.5
esa  52 | .00  .00  .00   .03  -.26   .15   .2  .09  .06 |    5.2  -76.9     .9
        | .00  .01  .00   .08   .11   .14   .1           |   18.5   17.2
gfz  52 | .00  .00  .01   .28   .07  -.03   .0  .05  .05 | 1409.8   81.0     .6
        | .00  .00  .00   .11   .05   .13   .0           |  791.5   12.9
igr  n/a| .00 -.02  .00   .10   .09   .05   .0  .10  .06 |    -.1    -.3     .6
        | .01  .01  .00   .28   .14   .17   .1           |     .7    1.2
jpl  37 | .00  .00  .01  -.16  -.09  -.01   .2  .09  .08 |  715.7   40.0     .4
        | .00  .01  .00   .10   .08   .05   .1           | 1011.2   40.1
ngs  49 | .01 -.04  .00  -.26   .30  -.39  -.2  .18  .18 |    1.7     .9   87.3
        | .01  .01  .02   .80   .64   .15   .4           |    4.5    7.2
sio  109| .00  .01 -.01  -.11   .18  -.46  -.1  .08  .07 |     .0     .0     .0
        | .00  .01  .01   .07   .11   .32   .2           |     .0     .0

Table 1.0915.b   GPS week : 0915   MJD: 50649.0-50655.0

         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   2   2   3   3   3   2 |
   2  |   3   3   2   3   2   3   3 |
   3E |   3   2   2   3   3   3   3 |
   4  |   3   3   2   3   2   3   2 |
   5  |   3   2   2   2   2   2   2 |
   6E |   3   4   3   3   3   3   2 |
   7E |   3   3   2   3   3   4   3 |
   9  |   3   3   3   3   2   2   2 |
  10E |   4   3   3   3   3   3   2 |
  14E |  68   3   2  12   5   4  21 | Modeling problems on days 0,3,6.
  15  |   3   2   2   2   2   3   3 |
  16E |   4   2   3  16   4  74   7 | Modeling problems on days 3,5-6.
  17  |   2   3   2   2   2   3   2 |
  18  |   3   2   9   3   3   3   3 | Modeling problems on day 2.
  19  |   3   3   4   3   4   8   2 |
  21E |   3   3   2   3   3   4   3 |
  22  |   3   3   2   2   3   3   2 |
  23E |   3   3   3   4   5   3   3 |
  24  |   2   3   2   3   2   2   2 |
  25  |   4   3   3   3   2   2   2 |
  26  |   2   3   2   2   2   3   2 |
  27  |   3   3   3   3   2   2   2 |
  29  |   4   3   2   4   3   3   3 |
  30  |   2   2   2   2   3   3   2 |
  31E |   3   3   2   3   3   4   3 |

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

Table 2.0915.0   GPS week: 0915   Day: 0   MJD: 50649.0

CENT STA|  DX   DY   DZ    RX    RY    RZ  SCL  RMS WRMS |   TOFT  TDRFT    RMS
--------|------------------------------------------------|---------------------
cod  78 |-.01  .01 -.01  -.17   .08   .59  -.1  .16  .05 |   -4.6    1.7     .5
emr  28 | .01 -.03  .00   .32   .00  1.29  -.1  .09  .09 | 1695.3   79.5     .4
esa  52 | .00  .00  .00   .13  -.34   .24   .0  .06  .06 |  -16.5  -69.1    1.0
gfz  53 | .00  .00  .01   .11   .02  -.19   .0  .04  .04 | 1697.0   80.4     .4
igr  n/a| .00 -.01  .00  -.12  -.14   .35   .1  .12  .05 |     .2    -.6     .5
jpl  37 | .00  .00  .01  -.27  -.05   .03   .2  .13  .13 | 1696.8   80.2     .3
ngs  48 | .00 -.04  .01   .36   .73  -.41  -.4  .17  .17 |    -.4    -.8   80.6
sio  109|-.01  .01 -.02  -.06   .17  -.40   .1  .09  .09 |     .0     .0     .0

Table 2.0915.1   GPS week: 0915   Day: 1   MJD: 50650.0

CENT STA|  DX   DY   DZ    RX    RY    RZ  SCL  RMS WRMS |   TOFT  TDRFT    RMS
--------|------------------------------------------------|---------------------
cod  78 | .01  .01 -.01  -.07  -.07   .19  -.2  .04  .04 |    6.3    6.8     .4
emr  29 | .01  .00  .00   .27  -.02  1.33  -.2  .09  .09 | 1782.3   90.5     .3
esa  51 | .00  .00  .00   .04  -.26   .06   .1  .06  .06 |    7.7  -59.0     .7
gfz  52 | .00  .00  .00   .23   .09  -.23   .0  .05  .05 | 1784.0   91.1     .3
igr  n/a| .01 -.03  .00   .32   .16  -.05   .0  .06  .06 |     .8   -1.3     .4
jpl  37 | .00  .00  .01  -.19   .05   .06   .1  .03  .04 | 1782.9   91.0     .3
ngs  48 | .01 -.06 -.02   .69   .24  -.66   .1  .17  .18 |    1.2    5.3   79.6
sio  112| .00  .00 -.01  -.06   .13   .07  -.2  .09  .09 |     .0     .0     .0

Table 2.0915.2   GPS week: 0915   Day: 2   MJD: 50651.0

CENT STA|  DX   DY   DZ    RX    RY    RZ  SCL  RMS WRMS |   TOFT  TDRFT    RMS
--------|------------------------------------------------|---------------------
cod  79 | .01  .00 -.01  -.18   .01   .22  -.2  .06  .04 |    2.1     .2     .5
emr  30 | .02 -.01  .01   .08  -.07  1.28  -.3  .12  .12 | 1867.1   75.3     .4
esa  53 |-.01 -.01  .00   .01  -.37   .00   .1  .08  .07 |   17.1  -78.0     .8
gfz  53 | .00  .00  .01   .31   .10   .01   .0  .04  .04 | 1868.4   76.1     .3
igr  n/a| .01 -.01  .00  -.11   .08   .10   .1  .10  .06 |    -.8     .8     .5
jpl  37 | .00  .00  .01  -.09  -.04   .00   .2  .04  .04 | 1868.1   76.0     .3
ngs  49 | .01 -.04  .00 -1.60 -1.09  -.43   .5  .21  .21 |    8.8   -8.4   80.2
sio  112|-.01  .00 -.01  -.08   .19  -.27   .0  .07  .06 |     .0     .0     .0

Table 2.0915.3   GPS week: 0915   Day: 3   MJD: 50652.0

CENT STA|  DX   DY   DZ    RX    RY    RZ  SCL  RMS WRMS |   TOFT  TDRFT    RMS
--------|------------------------------------------------|---------------------
cod  79 | .00  .01 -.02  -.30   .13   .50  -.2  .25  .05 |    2.0   16.0     .6
emr  28 | .01 -.02  .01   .76  -.15  1.35  -.3  .13  .12 | 1943.4   97.3     .4
esa  52 | .00 -.01  .01   .14  -.21   .13   .3  .10  .07 |   10.1  -54.6    1.1
gfz  53 | .00  .01  .00   .32  -.02   .06   .0  .05  .05 | 1945.0   97.8     .3
igr  n/a| .00 -.01  .01   .54   .02  -.08  -.1  .11  .06 |     .4   -2.3     .7
jpl  37 | .00  .00  .01  -.28  -.16  -.06   .1  .06  .06 | -374.2    9.8     .4
ngs  49 | .01 -.05 -.02   .30   .84  -.17  -.3  .16  .17 |   -1.2   11.8   79.1
sio  112|-.01  .00 -.01  -.11  -.01  -.49  -.1  .07  .07 |     .0     .0     .0

Table 2.0915.4   GPS week: 0915   Day: 4   MJD: 50653.0

CENT STA|  DX   DY   DZ    RX    RY    RZ  SCL  RMS WRMS |   TOFT  TDRFT    RMS
--------|------------------------------------------------|---------------------
cod  78 | .00  .01 -.01  -.17   .08   .50  -.3  .06  .05 |   22.6  -29.8     .3
emr  27 | .01 -.02  .01   .32   .01   .61  -.3  .10  .09 |  322.8   -3.9     .3
esa  52 | .00  .00  .00  -.03  -.36   .00   .2  .07  .06 |   24.0  -93.3    1.2
gfz  53 | .00  .00  .00   .29   .07  -.02   .0  .06  .06 | 2048.0   61.7     .3
igr  n/a| .01 -.02  .01  -.15   .30  -.06   .1  .05  .05 |    -.9     .0     .2
jpl  37 | .00  .01  .01  -.15  -.15  -.07   .2  .04  .05 |   80.5    8.3     .2
ngs  48 | .01 -.05  .01  -.16   .51  -.33  -.3  .20  .19 |    5.3    3.2  120.8
sio  108| .00  .00 -.01  -.06   .27  -.95  -.2  .07  .07 |     .0     .0     .0

Table 2.0915.5   GPS week: 0915   Day: 5   MJD: 50654.0

CENT STA|  DX   DY   DZ    RX    RY    RZ  SCL  RMS WRMS |   TOFT  TDRFT    RMS
--------|------------------------------------------------|---------------------
cod  78 | .00  .00 -.02  -.33  -.17   .26  -.3  .16  .05 |    -.8  -12.6     .4
emr  30 | .00 -.02  .01   .57   .13  1.41  -.2  .11  .10 |  225.2   69.2     .4
esa  51 | .00 -.01  .00  -.04  -.13   .29   .2  .10  .05 |   18.7 -101.1     .9
gfz  52 | .00  .00  .01   .26   .07   .04  -.1  .04  .04 |  226.7   69.6     .4
igr  n/a| .01 -.02  .01  -.08   .16  -.11   .1  .15  .06 |    -.6     .9     .7
jpl  37 | .01  .01  .01   .01  -.17  -.02   .3  .16  .14 |   92.1   14.4     .4
ngs  49 | .00 -.04 -.01  -.51   .46  -.27  -.8  .19  .18 |    2.7   -7.6   82.0
sio  103| .00  .02 -.02  -.24   .32  -.67   .1  .09  .08 |     .0     .0     .0

Table 2.0915.6   GPS week: 0915   Day: 6   MJD: 50655.0

CENT STA|  DX   DY   DZ    RX    RY    RZ  SCL  RMS WRMS |   TOFT  TDRFT    RMS
--------|------------------------------------------------|---------------------
cod  76 | .00  .00 -.01  -.21  -.12   .13  -.3  .08  .04 |   -5.3    1.3     .5
emr  31 | .01 -.01  .00   .18  -.03   .02   .0  .12  .11 |  298.0   90.6     .6
esa  54 |-.01  .00  .00  -.05  -.12   .35   .2  .14  .05 |  -24.4  -82.8     .9
gfz  51 | .00  .00  .01   .46   .13   .09   .0  .04  .04 |  299.7   90.6    1.4
igr  n/a| .00 -.02  .00   .32   .04   .17  -.1  .10  .06 |     .4     .3     .8
jpl  37 |-.01  .01  .00  -.13  -.14  -.04   .1  .08  .08 | -136.1     .3     .6
ngs  50 | .00 -.05  .03  -.90   .39  -.45   .1  .16  .15 |   -4.9    2.5   80.6
sio  106| .00  .01 -.01  -.18   .15  -.54  -.4  .06  .06 |     .0     .0     .0

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

         "E" stands for  eclipsing satellites.
         "T" stands for Total long arc orbit RMS 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 3.0915.0   GPS week: 0915   Day: 0   MJD: 50649.0

               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  10   6   4   6   4  13   9    3 |    4  10   6   4   7   4  12   7    4
   2  |   5  10   4   4   5   3  20   8    3 |    5   9   6   5   8   6  18   8    6
   3E |   6  10   5   4   5   5  16  10    3 |    6  10   7   8   6   6  18  11    6
   4  |   5   7   5   4   5   4  16   8    3 |    6   7   9   5   9   7  19   8    6
   5  |   4   5   7   4   5   3  15  11    3 |    3   6   6   4   8   4  12  11    4
   6E |   7  11   7   6   4   5  20   6    3 |    9  13  12  12   9   9  16  11    9
   7E |   9   8   7   4   6   3  17   7    3 |    5   8   4   5   7   4  19   7    5
   9  |   7   9   7   4   6   5  12   8    3 |    6  10   7   9   9   9  11  10    6
  10E |   5  11   5   5   5   4  25  10    4 |   10  13  13  13  18  12  21  15   10
  14E |  74 --- --- ---  54  63 --- ---   68 |    0 --- --- ---   0   0 --- ---  ---
  15  |   6  10   5   3   8   5  16   7    3 |    6   5   9   5   9   6  17   8    4
  16E |   6  10   9   5  10   6  19   8    4 |    7   7   8   8   9   7  16   8    6
  17  |   4   9   4   4   4   4  10   9    2 |    5  12   8   5   8   7  13   6    5
  18  |   5   6   3   6   5   5  13   9    3 |    3   7   4   3   7   3  11   6    2
  19  |   5   6   8   4   5   3   9  11    3 |   13  17  13  11  14  15  11  17   11
  21E |   4  12   7   4   4   4  21  10    3 |    9  13  12  10  13   9  25  12   10
  22  |   5   9   4   6   5   4  19  13    3 |    4   7   6   4   7   6  17  13    3
  23E |   7   9   7   4   4   5   9  10    3 |   10   8  12  10  11   9  14  12    9
  24  |   3   7   4   3   3   4  13   7    2 |    5   7   8   5   8   7  13  10    5
  25  |   5   9   8   5   6   6  24  12    4 |    6   8   9   7   6   7  26  10    6
  26  |   4   9   4   3   3   3  14   7    2 |    3   8   6   4   6   4  12   8    4
  27  |   7   7   5   5   4   4  16  10    3 |    6  10   9   8  10   7  17   9    7
  29  |   5   5  10   7   6   4  18  10    4 |    3   6   6   4  10   5  19  11    4
  30  |   5  10   4   3   5   5  11   8    2 |    4   8   8   5   8   6  13   8    4
  31E |   5  10   6   5   7   4  24   8    3 |    8   8   8   7   5   6  22  10    7
------|--------------------------------------|--------------------------------------
 RMS  |  16   9   6   4  12  13  17   9      |T   6   9   8   7   9   7  16  10    6
 WRMS |   5   9   6   4   5  13  17   9      |NE  5   9   7   5   8   6  15   9    5
 MEDI |   5   9   6   4   5   4  16   9      |MD  6   8   8   5   8   7  17  10    6

Table 3.0915.1   GPS week: 0915   Day: 1   MJD: 50650.0

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

Table 3.0915.2   GPS week: 0915   Day: 2   MJD: 50651.0

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

Table 3.0915.3   GPS week: 0915   Day: 3   MJD: 50652.0

               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  16   6   5   9   4  24   6    3 |    4  15   8   5   8   5  16   7    3
   2  |   5  18   5   3   4   2  22   5    3 |    6  16   6   4   8   7  14   4    5
   3E |   4  16   5   5   7   4  25   5    3 |    7  12   5   8   9   6  24   9    6
   4  |   5   7  12   3   6   5  13   6    3 |    6   8   9   5   7   7  18   9    5
   5  |   4   9   4   5   6   2  15   5    2 |    3   7   6   3   8   5   9   6    2
   6E |   5  15   5  10   8   5  12   6    3 |    6  16   8   9  11   6  11   8    7
   7E |   6   9   5   4   5   3  18   6    3 |    4  10   5   6   6   4  19   8    5
   9  |   4   9   8   4   3   4  13   6    3 |    3   9   5   7   7   8  14   7    6
  10E |   5  17   7   5  10   5  17   6    3 |   10  21  12  11  14  13  19  10   10
  14E | 118 --- --- ---  42  11 ---  14   12 |    0 --- --- ---   0   0 ---   0  ---
  15  |   5  13   8   3   6   4  14   5    2 |    7   8   6   5   9   7  15   5    4
  16E |  38 ---  35 ---  22  18 ---  11   16 |    0 ---   0 ---   0   0 ---   0  ---
  17  |   4  13   6   4   9   4   9   6    2 |    4  13   6   4   8   6   7   7    4
  18  |   5  10   6   5   7   6  16  11    3 |    8  10   7   8   8   5  18  13    8
  19  |   5   7   4   4   3   4  13   8    3 |    6   9  11   5   8   8  15   9    5
  21E |   4  12   7   3   6   3  21   7    3 |    7  14  11   9  12   9  22   9    8
  22  |   5  15   4   3   7   4  16   6    2 |    5  11   6   6   8   6  12   6    4
  23E |  16   8   6   7   5   3  15   7    4 |   28  26  22  26  25  24  35  22   24
  24  |   5   7   9   3   7   5  10   5    3 |    6   8  10   5  11   7  14   6    5
  25  |   5   9  13   6   8   3  11   6    3 |    8  11   8   6  10   5  12   6    4
  26  |   4  16   3   3   5   3  17   5    2 |    4  18   7   6   7   5  14   5    4
  27  |   4  13   7   5   5   4  13   7    3 |    5  15   9   7   9   8  11   7    5
  29  |   8  11   8   5   6   9  16   7    4 |    7  12   6   5   9   7  13  10    5
  30  |   6  16   4   6   5   3  13   5    2 |    3  13   7   3   8   4  10   7    3
  31E |   5  12   8   5   9   5  15   9    3 |    6  13   4   7   9   6  19  11    5
------|--------------------------------------|--------------------------------------
 RMS  |  25  13  10   5  11   6  16   7      |T   8  13   8   8  10   8  16   9    7
 WRMS |   5  12   7   5   6   6  17   7      |NE  5  11   7   5   8   6  13   7    4
 MEDI |   5  12   6   5   6   4  15   6      |MD  6  12   7   6   8   6  14   7    5

Table 3.0915.4   GPS week: 0915   Day: 4   MJD: 50653.0

               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   9   5   4   5   6  27   7    3 |    3  12   6   6   7   4  17   8    3
   2  |   6  10   4   3   4   3  16   8    2 |    5  10   7   4   6   6  14   8    4
   3E |   5  11   8   6   5   3  21   8    3 |    5  13   9   7   8   5  25   8    5
   4  |   4   8   4   5   6   3  13   7    2 |    4  11   6   5   8   5  12   8    4
   5  |   4   6   4   4   6   5  14   8    2 |    3   9   9   3  10   5  11  12    4
   6E |   2  11  11   7   6   3  12   7    3 |    5  12  10   7   9   7  13  10    6
   7E |   5  10   3   3   4   4  14  10    3 |    4  11   5   5   6   4  20   8    4
   9  |   5   7   4   4   3   5  12  10    2 |    4  13  11   6   7   7   9  10    6
  10E |   3  11   6   6   8   3  23   4    3 |   13  13  12  13  17  15  25  14   12
  14E |   5  20  12  10   6   5  32   8    5 |    3  18   9   6   6   4  15   5    4
  15  |   6   8   6   4   3   5  16   6    2 |    3   9   8   5   7   4  14   8    4
  16E |   5  13   7   7   5   5  40   5    4 |    2   5   2   4   2   3   7   2    2
  17  |   2  10   4   4   5   3   8   8    2 |    4  12   5   5   6   5  10   7    4
  18  |   4  11   6  10   5   3  20   6    3 |    7  11  11   7  10   5  22  12    9
  19  |   6   8  18   7   6   5  12   5    4 |    5   7  12   6   6   8  11   8    6
  21E |   5  10   5   5   7   4  17   8    3 |   10  17  12  10  11  11  23  10   10
  22  |   4  11   3   4   3   4  23   7    3 |    4  11   7   4   6   6  15   8    4
  23E |  18  12  11  11   8   7  31  13    5 |   39  43  45  46  44  44  61  44   43
  24  |   3   6   5   4   3   3  19   5    2 |    4   8   7   4   4   4  12   5    3
  25  |   6   7   4   3   3   3   9   7    2 |    4   9   5   5   7   4  12  10    4
  26  |   3   5   3   4   3   5  16   6    2 |    4   8   6   5   5   5  17   9    4
  27  |   3   8   6   4   3   3  15   7    2 |    4  11   6   7   8   7  11   6    5
  29  |   5   7   5   5   4   6  19   7    3 |    3   8   5   4   6   5  13   8    3
  30  |   5  14   4   6   6   3  10   5    3 |    4  13   7   4   7   5   8   8    4
  31E |   6  12   5   5   6   6  22   9    3 |    5   8  11   7   6   6  19  10    5
------|--------------------------------------|--------------------------------------
 RMS  |   6  10   7   6   5   4  20   7      |T   9  13  12  11  11  10  19  12   10
 WRMS |   5   9   6   6   5   5  19   7      |NE  4  10   7   5   7   5  13   8    4
 MEDI |   5  10   5   5   5   4  16   7      |MD  4  11   7   5   7   5  14   8    4

Table 3.0915.5   GPS week: 0915   Day: 5   MJD: 50654.0

               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   8   3   3   7   6  29   9    3 |    3  11   4   3   8   5  18   9    3
   2  |   7  11   6   4   6   7  21   7    3 |    4  10   5   6   8   6  17   8    4
   3E |   6  10   5   5   7   5  15  10    3 |    5  12   6   9   8   6  18  12    7
   4  |   4   6   3   3   4   3  21   6    3 |    4   9   4   3   6   3  17   8    3
   5  |   3   7   4   5   6   3  11   9    2 |    3   9   6   4   6   4  10  10    4
   6E |   4  13   5   5   6   4  10  10    3 |    5  12   6   5   6   6  14   9    4
   7E |   6  12   5   3   6   5  23  13    4 |    3  14   7   5   7   4  22  10    4
   9  |   5  10   3   4   4   5  11   6    2 |    4  13   6   6   8   6  11   8    5
  10E |   3   9   4   4   8   5  22   6    3 |   14  15  14  15  18  14  28  13   14
  14E |   6  19   8   3   8   6  33   6    4 |    4  16   5   5   8   5  16   5    3
  15  |   7  10   4   4   4   5  15   8    3 |    3  15   3   5   4   3  15   8    3
  16E |  74 --- --- ---  69  75 --- ---   74 |    0 --- --- ---   0   0 --- ---  ---
  17  |   3  12   5   3   7   3   9  12    3 |    3  12   3   4   5   4  10   9    2
  18  |   7  12   6   4   9   8  15   9    3 |    9  13   8   9  11   8  23  15   10
  19  |  12  17  38   8   9  15  19   9    8 |    3   7  26   5  10   5   8  10    7
  21E |   8  13   8   5   6   6  25  13    4 |    9  18  13  11  11   9  25  13   10
  22  |   3   8   6   2   6   3  16  11    3 |    3   9   6   5   7   3  16  13    4
  23E |   8  11   8   4   5   4  13   7    3 |    5  10  15   4   6   6   6   7    5
  24  |   2   7   5   3   4   3  13   5    2 |    3  11   7   4   7   3  12   6    4
  25  |   5   8   5   4   5   3  12   7    2 |    5  11   7   4   6   4  16   7    3
  26  |   3   6   5   3   6   4  22   8    3 |    5  16   7   6   6   4  18  10    5
  27  |   5  11   5   4   5   3  13   6    2 |    4  11   6   5   7   6   9   7    4
  29  |   6   9   5   3   5   5  23   7    3 |    3  12   4   5   7   5  15   7    4
  30  |   4  10   4   5   5   4   8  11    3 |    4  13   5   4   5   5   9  11    4
  31E |   3   6  12   4   9   4  19   9    4 |    5  10  13   7   7   6  16  13    6
------|--------------------------------------|--------------------------------------
 RMS  |  16  11  10   4  15  16  19   9      |T   5  12   9   6   8   5  16   9    5
 WRMS |   5  10   5   4   6  14  18   8      |NE  4  11   8   5   7   4  14   9    4
 MEDI |   5  10   5   4   6   5  16   9      |MD  4  12   6   5   7   5  16   9    4

Table 3.0915.6   GPS week: 0915   Day: 6   MJD: 50655.0

               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  |   3  10   4   5   5   5  20   4    2 |    5  13   5   5   7   6  18   6    4
   2  |   6  11   4   5   6   6  19   6    3 |    6   9   8   5   9   8  12   7    4
   3E |   4  11   5   3   6   4  21   7    3 |    5  13   9   6   8   6  24   9    5
   4  |   4  10   2   3   6   2  11   4    2 |    4   9   7   5   8   6  13   7    5
   5  |   3  12   4   5   8   4  10   5    2 |    4   9   9   5   8   6  12   8    5
   6E |   2  12   4   6   6   3  12   6    2 |    7  13   9   8   9   8  14  10    7
   7E |   6  18   5   3   7   4  19   8    3 |    4  15   6   7  10   6  19   9    6
   9  |   4  13   5   3   5   4  12   5    2 |    6  14  11   8   8   8  15  11    7
  10  |   6  10   4   4   7   2  15   7    2 |   15  20  18  18  16  19  19  17   16
  14E |  30  25 --- ---  30  30 --- ---   21 |    0   0 --- ---   0   0 --- ---  ---
  15  |   5  10   6   4   6   5  17   6    3 |    5  11   7   5   9   7  20   9    5
  16E |   9 ---  64 ---  27  11 ---   9    7 |    0 ---   0 ---   0   0 ---   0  ---
  17  |   3  12   3   3   5   3  13   9    2 |    5  16   5   5   7   7  13   7    4
  18  |   4  10   6   4   7 ---  15   9    3 |    7  11   5   6   9 ---  21  11    7
  19  |   5  11   4   4   7   4  16   5    2 |    3   6  21   4   5   4  13   6    6
  21E |   5  12   5   4   4   4  21   6    3 |   11  14  10  10  12  12  21  11    9
  22  |   4   9   4   2   4   3  17   7    2 |    4   8   6   5   7   6  18  10    4
  23E |   7   8   6   5   3   8  13   7    3 |    4   6   6   4   5   8   8   8    4
  24  |   3   7   4   3   8   3  18   3    2 |    5   8   7   4   6   7  13   5    4
  25  |   4  11   6   5   4   3   8   5    2 |    4  12   5   6   6   7  13   7    4
  26  |   3  11   5   4   5   4  15   5    2 |    5  11   9   8  10   6  17  10    6
  27  |   3   8   3   4   5   4  11   4    2 |    5   7   7   7   9   8  11   6    5
  29  |   5   9   6   4   5   4  17   5    3 |    3  10   7   5   7   6  17   9    4
  30  |   3  13   7   5   7   3   8   6    2 |    5  11   9   3   8   6  11   8    3
  31E |   4   9   3   6   5   3  24   5    3 |    6   9   8   7  10   7  24  12    7
------|--------------------------------------|--------------------------------------
 RMS  |   8  12  14   4  10   8  16   6      |T   6  11   9   7   8   8  16   9    6
 WRMS |   4  11   5   4   6   8  15   6      |NE  5  11   9   6   8   7  15   8    6
 MEDI |   4  11   5   4   6   4  15   6      |MD  5  11   7   5   8   7  15   9    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 4.0915   GPS week: 0915   MJD: 50649.0-50655.0

CENT| CLK EPO  |      BRUS      |      USUD      |      WILL      |
----|----------|----------------|----------------|----------------|
cod | cod 2381 |U  44   29   82 |U  39   28   77 |   23   16   51 |
emr | emr 2299 |   45   32   86 |   41   30   75 |U  23   17   53 |
esa | esa 2111 |   47   33   78 |U  46   31   86 |   26   21   66 |
gfz | gfz 1140 |   47   33   84 |U  35   26   71 |   24   20   57 |
igr | igr 2394 |   45   32   83 |   40   27   77 |   23   17   54 |
igs | igs 2397 |   43   30   79 |   39   28   76 |   22   15   53 |
jpl | jpl 2349 |U  43   31   81 |U  34   24   74 |   22   16   51 |

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 5.0915.0   GPS week: 0915   Day: 0   MJD: 50649.0

CENT| CLK EPO  |      BRUS      |      USUD      |      WILL      |
----|----------|----------------|----------------|----------------|
cod | cod 2365 |   45   28   86 |   38   24   54 |   27   15   47 |
emr | emr 2298 |   47   32   84 |   37   24   48 |   21   15   43 |
esa | esa 2150 |   49   33   79 |   46   25   62 |   26   20   64 |
gfz | gfz 1151 |   56   32   81 |   45   24   51 |   27   18   48 |
igr | igr 2397 |   45   31   81 |   39   22   60 |   24   16   49 |
igs | igs 2399 |   45   28   82 |   37   23   52 |   23   14   47 |
jpl | jpl 2364 |   44   30   81 |   37   21   51 |   22   15   45 |

Table 5.0915.1   GPS week: 0915   Day: 1   MJD: 50650.0

CENT| CLK EPO  |      BRUS      |      USUD      |      WILL      |
----|----------|----------------|----------------|----------------|
cod | cod 2388 |   46   25   79 |   37   33   98 |   25   22   67 |
emr | emr 2399 |   45   27   78 |   38   36   96 |   24   22   67 |
esa | esa 2104 |   51   28   73 |   40   34  103 |   28   25   82 |
gfz | gfz 1176 |   49   25   73 |   30   34   88 |   27   30   97 |
igr | igr 2398 |   46   27   75 |   37   32   98 |   23   24   71 |
igs | igs 2400 |   45   26   74 |   37   32   96 |   24   22   71 |
jpl | jpl 2364 |   45   27   76 |   36   32   95 |   24   23   70 |

Table 5.0915.2   GPS week: 0915   Day: 2   MJD: 50651.0

CENT| CLK EPO  |      BRUS      |      USUD      |      WILL      |
----|----------|----------------|----------------|----------------|
cod | cod 2393 |   40   24   80 |   24   20   57 |   21   11   42 |
emr | emr 2301 |   40   27   84 |   28   24   61 |   24   12   44 |
esa | esa 2030 |   43   27   80 |   36   26   74 |   23   19   55 |
gfz | gfz 1148 |   42   25   83 |   28   20   56 |   21   12   44 |
igr | igr 2399 |   39   25   82 |   27   20   60 |   21   13   47 |
igs | igs 2400 |   38   24   78 |   25   21   59 |   21   10   43 |
jpl | jpl 2362 |   38   26   79 |   25   19   59 |   22    9   41 |

Table 5.0915.3   GPS week: 0915   Day: 3   MJD: 50652.0

CENT| CLK EPO  |      BRUS      |      USUD      |      WILL      |
----|----------|----------------|----------------|----------------|
cod | cod 2372 |   39   28   76 |   41   26   94 |   23   15   46 |
emr | emr 2193 |   41   35   89 |   45   32   78 |   25   18   46 |
esa | esa 2080 |   40   34   70 |   49   27   91 |   26   16   62 |
gfz | gfz 1091 |   43   34   81 |   38   34   92 |   24   19   50 |
igr | igr 2369 |   38   35   81 |   41   26   82 |   27   18   50 |
igs | igs 2386 |   38   30   75 |   39   31   83 |   23   13   45 |
jpl | jpl 2350 |   38   33   76 |   39   28   80 |   22   14   42 |

Table 5.0915.4   GPS week: 0915   Day: 4   MJD: 50653.0

CENT| CLK EPO  |      BRUS      |      USUD      |      WILL      |
----|----------|----------------|----------------|----------------|
cod | cod 2357 |   59   30   88 |   32   21   61 |   25   16   34 |
emr | emr 2393 |   59   33   87 |   31   25   61 |   21   13   32 |
esa | esa 2057 |   62   33   81 |   39   31   71 |   28   20   50 |
gfz | gfz 1170 |   56   35   94 |   23   23   50 |   23   15   37 |
igr | igr 2394 |   59   32   88 |   31   23   59 |   22   12   34 |
igs | igs 2396 |   56   31   87 |   32   22   60 |   22   12   34 |
jpl | jpl 2357 |   57   31   86 |   32   20   61 |   23   13   36 |

Table 5.0915.5   GPS week: 0915   Day: 5   MJD: 50654.0

CENT| CLK EPO  |      BRUS      |      USUD      |      WILL      |
----|----------|----------------|----------------|----------------|
cod | cod 2394 |   35   34   78 |   36   26   71 |   21   11   41 |
emr | emr 2303 |   35   38   83 |   39   27   78 |   21   12   46 |
esa | esa 2156 |   38   39   76 |   44   30   92 |   24   15   60 |
gfz | gfz 1137 |   38   40   81 |   34   19   69 |   23   15   56 |
igr | igr 2400 |   40   38   93 |   40   25   77 |   22   14   47 |
igs | igs 2400 |   35   35   78 |   37   25   72 |   21   11   45 |
jpl | jpl 2367 |   34   35   79 |   37   23   70 |   20   13   46 |

Table 5.0915.6   GPS week: 0915   Day: 6   MJD: 50655.0

CENT| CLK EPO  |      BRUS      |      USUD      |      WILL      |
----|----------|----------------|----------------|----------------|
cod | cod 2398 |   40   32   88 |   55   38   90 |   21   21   70 |
emr | emr 2208 |   41   32   93 |   59   40   88 |   25   22   77 |
esa | esa 2199 |   45   35   84 |   62   41   98 |   25   27   81 |
gfz | gfz 1104 |   43   37   90 |   39   26   78 |   23   25   49 |
igr | igr 2399 |   42   34   83 |   59   39   95 |   21   21   72 |
igs | igs 2400 |   41   32   81 |   56   39   95 |   21   20   71 |
jpl | jpl 2276 |   42   33   91 |   28   23   88 |   22   20   69 |

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