Subject: [IGSREPORT-2404] Wk 0838 IGS Rapid Orbits
From: AC Coordinator / NRCan GSDivision
Date: Tue, 13 Feb 1996 5:59:23 PST

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IGS Electronic Report    Tue Feb 13  5:59:23 PST 1996      Message Number 2404
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Author: AC Coordinator / NRCan GSDivision
Subject: Wk 0838 IGS Rapid Orbits

Rapid Service IGS Orbit Combination - Week 0838   (Jan 28, 1996 - Feb 03, 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 (IGS08387.SUM).

SOFTWARE:

  The weighted average software used was developed by T. Springer and
G. Beutler during 1993. The GPS long arc orbit analysis software used here for
individual centre ephemeris evaluation was developed by Beutler et al. at the
Astronomical Institute of the University of Bern (AIUB). For more details on
the orbit combination and complete references for both software see:

   Beutler, Kouba, Springer, 1993, Combining orbits of the IGS processing
   centres, in IGS Analysis Centre Workshop, October 12-14, Ottawa, pp 19-55.

PRODUCTS GENERATED:

  The resulting average ephemeris and clocks are output to daily files in SP3
format. The satellite accuracy codes displayed in the header are based on the
weighted RMS for each satellite. Note that each file contains all the
satellites that appear in any of the centre ephemeris files. If a satellite or
centre was excluded from combination, a note in the REMARKS section of this
report will identify the exclusion and the reason.

  The resulting x and y earth rotation parameters (ERP) associated with the IGS
ephemeris files are computed using a weighted average of all available centres 
(weights are those from the orbit combination). These values are supplemented 
with the current IERS Bulletin A UT1-UTC values. 

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

 IGS08380-6.SP3  IGS GPS ephemeris files for days 0-6, week 0838 in SP3 format.
 IGS08387.ERP    Earth rotation parameters (ERP) associated with ephemerides.
 IGS08387.SUM    Complete report.

REMARKS on IGS Rapid Service Orbit Combination:

1. The centres used in the clock combination are COD, EMR, ESA, GFZ and JPL. The
   other centres are excluded because they either provide broadcast clocks (NGS)
   or clock corrections are not provided (SIO).  The clock information not
   used is still compared to combination for completeness.  
   The value of 999999.999999 microseconds, according to the sp3 format 
   convention, is used to signify that no clock solution is available and 
   therefore must not be used.

2. Only the GFZ "exact" clock corrections (one epoch out of two) are included
   in the combination and RMS computation (no "interpolation" values).

3. Centre clock weights were determined using the following non-SA satellites:
   PRN12, PRN15 and PRN28 on day 0 (Jan 28); PRN15 and PRN28 on days 1-6 
   (Jan 29-Feb 03) since PRN12 exhibited clocks jumps that corrupted the clock
   weights or PRN12 was not observed at all. 
   Higher clock RMS for NGS on days 1,3 and 4 can be explained by huge clock 
   jumps on PRN12.

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

            Day (Date)  |   PRN    | Centres | Shifts/Outliers
           -------------+----------+---------+------------------
            3 (Jan 31)  |   12     |   ESA   |  ~512 usec

5. There was a maneuver of PRN20 on day 4 (Feb 01) (ref. NANU 027-96032).
   The ESA solution which modeled the maneuver is provided for that satellite
   on that day as the combined solution. An associated accuracy code of 0
   (unknown) was given since there was no redundancy. The ESA and the combined
   solutions for PRN20 were excluded from the long arc evaluation on 
   day 4 due to unrealistic RMS caused by the maneuver.

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
         ------------+----------+-----+------------------------------
          2 (Jan 30) | 00:00:00 | 23  |   ALL    | Modeling problems
          5 (Feb 02) | 00:00:00 | 20  |   ALL    | Maneuver

7. Centre specific UT1-UTC values for ESA and 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 0837, the igp orbits/clocks ("igp" standing for igs 
   preliminary combination) are now included in the rapid combination for 
   statitics only.  Note that the "igp" daily combination is performed on a 
   daily basis within 36 hours of last observation.

ORBIT COMBINATION AND EVALUATION STATISTICS:

For a complete description of tables and statistics, please refer to the report
posted on CDDIS (IGS08387.SUM).

Table 1: Week 0838 summary.                       (Jan 28, 1996 - Feb 03, 1996)

Table 1.0838.a   GPS week: 0838   MJD: 50110.0-50116.0

         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  65 | .00  .03 -.01  -.33   .01  -.02   .2  .07  .06 |     .1    1.8    2.0
        | .00  .01  .01   .15   .08   .16   .1           |    5.4   11.1
emr  30 | .01 -.04 -.01   .36  -.19   .45  -.2  .10  .10 |  458.4   24.2     .9
        | .00  .01  .01   .12   .11   .09   .1           |   38.7    7.5
esa  53 | .01 -.02 -.02  -.04   .27  -.43   .1  .14  .12 |    -.8     .610972.3
        | .01  .01  .01   .22   .15   .18   .1           |   17.9   12.0
gfz  46 |-.03 -.03  .00   .11  -.16  -.36  -.3  .13  .12 |  464.2   19.8    6.7
        | .01  .01  .01   .06   .02   .11   .1           |   43.6   11.6
igp  n/a| .01 -.01 -.02   .27   .28   .26  -.1  .10  .08 |    -.9     .6    1.1
        | .00  .01  .01   .11   .09   .35   .1           |    1.0    2.0
jpl  37 | .01  .03  .00  -.19   .06   .15   .2  .07  .07 | -319.3    4.2     .9
        | .00  .01  .00   .13   .08   .12   .1           |  533.4   18.8
ngs  45 | .01 -.04  .03   .19   .61  -.09  -.4  .18  .19 |-1237.7 2513.723489.1
        | .01  .01  .01   .28   .12   .25   .2           | 2241.5 4510.6
sio  112|-.01  .03  .02   .12  -.20  -.05   .1  .09  .08 |     .0     .0     .0
        | .00  .00  .00   .07   .11   .14   .1           |     .0     .0

Table 1.0838.b   GPS week : 0838   MJD: 50110.0-50116.0

         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   4   3   2   3   3   3 |
   2  |   2   3   3   2   4   2   2 |
   4  |   4   4   4   3   3   4   3 |
   5  |   2   3   3   2   3   2   2 |
   6  |   2   3   4   3   2   3   3 |
   7  |   3   3   4   3   4   3   3 |
   9  |   3   2   3   3   3   3   3 |
  12  |   3   7   4   9  12 --- --- | Low or no tracking on days 1-6.
  14E |   4   4   5   4   4   4   4 |
  15  |   3   4   3   3   3   3   4 |
  16E |   5   5   6   4   4   6   5 |
  17  |   3   3   3   2   3   3   3 |
  18  |   2   2   2   2   2   2   3 |
  19  |   2   2   2   2   2   2   2 |
  20  |   2   3   3   3   0   4   3 | Maneuver day 4.
  21E |   6   5   5   5   5   5   4 |
  22  |   3   3   4   3   5   3   4 |
  23E |  10   8   7   8   6   7   7 |
  24  |   3   3   4   4   3   4   4 |
  25  |   3   3   4   3   3   3   3 |
  26  |   2   3   3   3   3   3   3 |
  27  |   2   3   2   2   3   3   2 |
  28  |   2   3   3   3   3   3   4 |
  29  |   3   3   3   2   3   2   3 |
  31  |   4   3   5   4   4   4   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 2.0838.0   GPS week: 0838   Day: 0   MJD: 50110.0

CENT STA|  DX   DY   DZ    RX    RY    RZ  SCL  RMS WRMS |   TOFT  TDRFT    RMS
--------|------------------------------------------------|---------------------
cod  66 | .00  .02 -.01  -.53  -.06  -.30   .1  .07  .05 |    3.3   -6.0    2.2
emr  31 | .02 -.04 -.01   .42  -.09   .44  -.2  .09  .09 |  405.3   20.3     .8
esa  55 | .00 -.02 -.01   .19   .27  -.25   .0  .15  .11 |  -11.9   -4.0    1.4
gfz  46 |-.03 -.02  .00   .13  -.17  -.52  -.1  .12  .11 |  409.6   10.1    6.2
igp  n/a| .01  .00 -.04   .31   .21   .11   .0  .12  .10 |   -1.0     .1     .9
jpl  37 | .00  .03  .00  -.22  -.03   .10   .0  .08  .08 | -611.8   -3.9     .8
ngs  45 | .00 -.03  .01   .31   .60   .13  -.3  .13  .14 |     .0   -1.3   76.8
sio  112|-.01  .03  .02   .03  -.34   .03   .2  .10  .08 |     .0     .0     .0

Table 2.0838.1   GPS week: 0838   Day: 1   MJD: 50111.0

CENT STA|  DX   DY   DZ    RX    RY    RZ  SCL  RMS WRMS |   TOFT  TDRFT    RMS
--------|------------------------------------------------|---------------------
cod  66 |-.01  .02 -.01  -.26  -.05   .10   .1  .06  .05 |   -4.8   17.5    2.0
emr  30 | .02 -.04 -.01   .32  -.17   .51  -.1  .10  .10 |  422.5   31.1     .9
esa  54 | .01 -.03 -.03   .00   .08  -.33   .0  .15  .13 |   20.8   -4.1    1.5
gfz  45 |-.03 -.01  .01   .13  -.13  -.37  -.3  .15  .15 |  420.1   35.7    5.3
igp  n/a| .01 -.02 -.03   .18   .14   .19  -.2  .11  .08 |    -.6    2.2    1.1
jpl  37 | .01  .02  .00  -.21   .12   .13   .2  .06  .06 | -618.7    6.0     .9
ngs  46 | .00 -.05  .02   .39   .73  -.26  -.6  .21  .26 |-4661.0 9265.036380.0
sio  113|-.01  .03  .02   .13  -.32  -.23   .1  .10  .08 |     .0     .0     .0

Table 2.0838.2   GPS week: 0838   Day: 2   MJD: 50112.0

CENT STA|  DX   DY   DZ    RX    RY    RZ  SCL  RMS WRMS |   TOFT  TDRFT    RMS
--------|------------------------------------------------|---------------------
cod  65 | .00  .02 -.01  -.25  -.08  -.16   .1  .07  .06 |    6.3   -5.8    1.9
emr  31 | .01 -.04 -.01   .17  -.34   .38   .1  .15  .14 |  449.8    9.5    1.0
esa  54 | .00 -.02 -.01   .18   .12  -.56   .2  .16  .14 |    -.2  -18.5    2.5
gfz  46 |-.03 -.04  .00   .18  -.15  -.15  -.4  .13  .11 |  451.2    8.9    6.3
igp  n/a| .02  .00 -.01   .09   .39  1.03   .0  .11  .09 |    -.4    1.5    1.5
jpl  37 | .02  .02  .00  -.20   .21   .27   .2  .07  .07 | -616.3  -15.6    1.0
ngs  43 | .00 -.04  .02   .22   .64  -.17  -.4  .17  .20 |    2.2    -.9   78.9
sio  109| .00  .03  .02   .14  -.19   .07  -.1  .09  .08 |     .0     .0     .0

Table 2.0838.3   GPS week: 0838   Day: 3   MJD: 50113.0

CENT STA|  DX   DY   DZ    RX    RY    RZ  SCL  RMS WRMS |   TOFT  TDRFT    RMS
--------|------------------------------------------------|---------------------
cod  64 |-.01  .03 -.01  -.18   .03  -.01   .2  .07  .06 |   -2.7    4.4    2.1
emr  30 | .01 -.04 -.01   .39  -.14   .59  -.2  .09  .09 |  452.6   30.1    1.0
esa  54 | .01 -.02 -.01  -.37   .25  -.75   .0  .14  .12 |   -7.3   -1.729030.0
gfz  46 |-.03 -.02  .00   .13  -.15  -.32  -.4  .11  .10 |  457.5   25.5    5.7
igp  n/a| .01  .00 -.03   .24   .27  -.01  -.1  .09  .09 |   -2.6    2.7    1.1
jpl  37 | .01  .02  .00  -.25   .07   .30   .2  .07  .07 |  453.5   30.8    1.0
ngs  46 | .02 -.03  .04   .34   .53  -.15  -.5  .20  .23 |-4361.0 8949.050360.0
sio  113|-.01  .03  .02   .12  -.19  -.07   .1  .09  .08 |     .0     .0     .0

Table 2.0838.4   GPS week: 0838   Day: 4   MJD: 50114.0

CENT STA|  DX   DY   DZ    RX    RY    RZ  SCL  RMS WRMS |   TOFT  TDRFT    RMS
--------|------------------------------------------------|---------------------
cod  65 |-.01  .02 -.01  -.18   .10   .01   .3  .09  .07 |   -5.9    7.5    2.0
emr  30 | .01 -.03 -.01   .31  -.12   .36  -.3  .09  .09 |  467.5   28.6    1.2
esa  54 | .02  .00 -.02  -.15   .25  -.39   .3  .14  .12 |  -14.1   13.8    2.7
gfz  46 |-.04 -.03  .01   .00  -.14  -.37  -.4  .13  .13 |  472.6   25.8    8.1
igp  n/a| .01  .00 -.02   .35   .26   .04  -.1  .09  .07 |     .7   -3.3    1.2
jpl  37 | .00  .03 -.01  -.38  -.03   .14   .2  .07  .07 |  468.6   29.1    1.1
ngs  45 | .01 -.04  .04   .45   .73  -.08  -.3  .18  .19 |  356.4 -619.1 1583.0
sio  113| .00  .03  .02   .22  -.18   .13   .4  .09  .08 |     .0     .0     .0

Table 2.0838.5   GPS week: 0838   Day: 5   MJD: 50115.0

CENT STA|  DX   DY   DZ    RX    RY    RZ  SCL  RMS WRMS |   TOFT  TDRFT    RMS
--------|------------------------------------------------|---------------------
cod  64 | .00  .04 -.01  -.51   .13   .15   .2  .08  .07 |    7.1  -14.8    1.9
emr  30 | .01 -.04 -.02   .35  -.11   .37  -.2  .09  .09 |  494.0   25.0     .7
esa  49 | .00 -.01 -.01  -.25   .39  -.24   .2  .14  .13 |  -19.6   17.2    1.5
gfz  46 |-.04 -.03  .00   .13  -.20  -.39  -.3  .12  .11 |  511.2    5.0    8.6
igp  n/a| .01 -.01 -.02   .32   .36   .25  -.1  .07  .07 |    -.9    -.2     .8
jpl  37 | .01  .03  .00   .06   .06  -.06   .1  .08  .08 | -651.1   -6.3     .7
ngs  44 | .00 -.04  .04  -.09   .38  -.41  -.1  .15  .15 |    1.2    3.2   78.9
sio  112| .00  .03  .02   .04  -.16  -.04   .2  .08  .08 |     .0     .0     .0

Table 2.0838.6   GPS week: 0838   Day: 6   MJD: 50116.0

CENT STA|  DX   DY   DZ    RX    RY    RZ  SCL  RMS WRMS |   TOFT  TDRFT    RMS
--------|------------------------------------------------|---------------------
cod  68 | .00  .03  .00  -.43   .00   .07   .2  .07  .06 |   -2.3    9.8    1.9
emr  28 | .01 -.05 -.02   .56  -.36   .52  -.3  .09  .09 |  516.8   25.0     .8
esa  54 | .01 -.02 -.03   .12   .51  -.49   .1  .13  .11 |   26.6    1.3    2.8
gfz  47 |-.04 -.04  .00   .04  -.15  -.40  -.3  .11  .10 |  527.3   27.4    5.9
igp  n/a| .02 -.01 -.01   .42   .30   .23  -.1  .07  .07 |   -1.5    1.2    1.0
jpl  37 | .01  .03  .00  -.15   .03   .18   .2  .07  .07 | -659.1  -10.9     .7
ngs  44 | .01 -.03  .04  -.31   .69   .33  -.3  .20  .17 |   -1.7     .4   77.5
sio  109|-.01  .03  .02   .16  -.02  -.23   .1  .08  .08 |     .0     .0     .0

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

         "E" stands for  eclipsing satellites.
         "T" stands for Total long arc orbit RMS (all satellites).
         "NE" stands for Non-Eclipsing satellites long arc orbit RMS.

         Units: cm.

Table 3.0838.0   GPS week: 0838   Day: 0   MJD: 50110.0

               Weighted Average                Orbit Dynamics (7 days)
 PRN  | cod emr esa gfz igp jpl ngs sio  IGS |  cod emr esa gfz igp jpl ngs sio  IGS
------|--------------------------------------|--------------------------------------
   1  |   5   6  13   8  10   3  12   8    3 |    7   8  11   7  15   8  15   8    7
   2  |   6   6  10   7  14   5  10   5    2 |    5  14  12  12  12   6  14   7    8
   4  |   6  16  10  11   9   8  10   8    4 |    4  11  15  13  11   5  13   6    7
   5  |   5   3   7   8  10   6   6   6    2 |    4  11  11  14  11   7  13   6    6
   6  |   4   6   8  10   6   6   7   7    2 |    4  12  12  13  12   4  14   3    7
   7  |   6   8   8   9   9   8   9   6    3 |    5  15  15  16  14   5  16   7    9
   9  |   4   5  17   9  12   4   8   5    3 |    5   6  10   9  16   6  10   5    5
  12  |   6  10   8   7   8   6   8   7    3 |    7   8  13  10  16   4  16   7    7
  14E |   8  10  22  15  12   9  11  12    4 |    9  19  21  22  17  10  17  10   10
  15  |   5   7  12  14   8   7   8   5    3 |    4  11  12  14  14   9  12   4    6
  16E |  11   8  13  11  20  13  21  17    5 |   16  16  18  16  17   6  27  10   11
  17  |   4   6   9   8   8   6  10   9    3 |    4  14  13  12  12   5  16   5    8
  18  |   4   6   8  10   5   6   7   7    2 |    3  10  10   8  12   7  11   5    7
  19  |   3   4   9   9   6   4   6   6    2 |    7   8  12  11  15   8  11   7    9
  20  |   4   5   9   8   8   6   8   6    2 |    3  10  10  10  12   4  10   3    5
  21E |   3   9   9  17   8  10  30  17    6 |    7  18  12  14  11   9  26  13    9
  22  |   5   6  19  14  16   5  10   8    3 |    4  13  13  12  12   8  13   6    6
  23E |  20  23  47  30  24  15  27  17   10 |   10  39  39  20  25   9  36   8   18
  24  |   6   8  16  11  11   5   8   5    3 |    5  10  15  13  16   7  12   7    7
  25  |   4   7   9   8  12   6  11   9    3 |    7  10  11  11  14   9  11  10    8
  26  |   4   4   9   7  11   5  13   4    2 |    5   7  14   8  12   6  13   6    7
  27  |   4   3   8   9   7   3   4   9    2 |    8  10  11   9  14   9  12   6    8
  28  |   5   6  11   8   9   5   7   6    2 |    4  11  14  12  12   6  12   5    7
  29  |   5   7  10  10   6   4   8   9    3 |    5   8   9   9  11   7  12   9    5
  31  |   5   9  16  14  12   7  13  10    4 |    5  13  14  13  13   8  10   8    7
------|--------------------------------------|--------------------------------------
 RMS  |   7   9  15  12  11   7  12   9      |T   6  13  15  12  14   7  16   7    8
 WRMS |   5   9  11  11   9   7  13   7      |NE  5  10  12  11  13   6  12   6    7

Table 3.0838.1   GPS week: 0838   Day: 1   MJD: 50111.0

               Weighted Average                Orbit Dynamics (7 days)
 PRN  | cod emr esa gfz igp jpl ngs sio  IGS |  cod emr esa gfz igp jpl ngs sio  IGS
------|--------------------------------------|--------------------------------------
   1  |   4   5  12   8   6   5  19  19    4 |    5   9  14   7   9   6  13  18    7
   2  |   4   6  18   9   9   4  10   3    3 |    6  14  14  14  13   5  17   6    9
   4  |   5  19  16  11   6   7  14   5    4 |    4  10  14  12   9   4  10   4    6
   5  |   4   7  10   9   5   5  13   8    3 |    4  12  11  12   8   6  11   5    6
   6  |   5   7  13  11   5   6   9   7    3 |    5  13  17  13   9   5  15   5    8
   7  |   5   8  14   9   6   6  10   6    3 |    5  16  16  16   9   9  15   4    9
   9  |   3   7   8   9   8   4  15   5    2 |    4   7  10   9   7   5  14   6    5
  12  |  10  13  11  19  34   9  45  20    7 |    6   7  13  17  26   5  43  22    8
  14E |   5  11  13  18   5   8  17   5    4 |    6  19  18  23  15   7  22   6    9
  15  |   4  10   9  22   9   6  14   8    4 |    4  16  11  17  16   5  15   5    6
  16E |  14  11  22  20  22   8  11   9    5 |   17  16  25  18  15   9  22   5   12
  17  |   3   9  12  11   7   4  14  11    3 |    4  12  16  12  10   6  18   6    6
  18  |   5   6   7   8   5   4   7   6    2 |    4  10  10   8  12   7  11   6    8
  19  |   3   4  11   7   7   5  12   6    2 |    5   8   9   7   9   7  10   5    7
  20  |   3   6  13   9  11   5  17   6    3 |    5  10  11  12  12   5  11   5    6
  21E |   5  15  11  20   4   8  36  15    5 |    8  23  13  15   9   6  35  10    9
  22  |   4  10  15   9   4   4  17  11    3 |    5  13  15  12   8   7  12   5    6
  23E |   5  21  24  32  13  12  57  14    8 |    9  24  17  25  12   9  30   8   10
  24  |   5  10  20  13   7   5  11   5    3 |    4   9  16  10  11   4  14   6    6
  25  |   5   8  15   7   8   5  17   6    3 |    6  11  13   6  10   6  11  11    7
  26  |   4   7  12  15   5   4  15   5    3 |    5   9  15   9   9   6  16   6    8
  27  |   3   4  16  12   4   6  10   7    3 |    4   8   9   7  12   7  10   5    7
  28  |   5   6  13  15   5   4  10   6    3 |    4  10  13  14  11   6  11   3    6
  29  |   4   8   7  15   3   4  10   5    3 |    3   9   8  13   9   7  12   6    6
  31  |   4   9  11  13   6   5  11   6    3 |    5  20  14  15  11   7  11   5    8
------|--------------------------------------|--------------------------------------
 RMS  |   5  10  14  14  10   6  20   9      |T   6  13  14  13  11   6  18   8    7
 WRMS |   5  10  12  14   7   6  25   8      |NE  4  11  13  11  11   6  15   8    6

Table 3.0838.2   GPS week: 0838   Day: 2   MJD: 50112.0

               Weighted Average                Orbit Dynamics (7 days)
 PRN  | cod emr esa gfz igp jpl ngs sio  IGS |  cod emr esa gfz igp jpl ngs sio  IGS
------|--------------------------------------|--------------------------------------
   1  |   5  18   9   7   8   5  19   6    3 |    4  14  10   7  13   4  15  11    5
   2  |   7   9  19  10   8   6   9   5    3 |    5  14  13  14   7   6  15   5    7
   4  |   4  10  24   7   7   6  12   7    4 |    5  10  24  11  12   8  13   6    6
   5  |   4   8  10   9  10   5  13   7    3 |    4  10  10  11  10   5  12   6    4
   6  |   4  16   8  10   5   7  22   9    4 |    4  14  12  12  11   6  17   4    6
   7  |   5  17  25  11   7   5   9   7    4 |    5  18  18  17  12   6  17   5    8
   9  |   4   7  14   8   7   3  16   7    3 |    5   7  11   7  12   5  15   7    4
  12  |  11  10   6  14  11 ---   7   7    4 |    7   9   9  18   9 ---  24  10    7
  14E |   5  18  15  19  12   8  13  11    5 |    7  20  16  20  16  10  16  11    8
  15  |   5  12  12  13   8   7  10   6    3 |    4  15  12  14  17   7  12   4    6
  16E |  20  14  19  14  26  12  23   9    6 |   21  16  20  18  26   6  32   6   12
  17  |   3  13  12   9  10  10  14   8    3 |    5  15  13  12  15  10  19   4    5
  18  |   4   8  10   6   6   4   9   7    2 |    3  10  10   7  12   6  11   5    5
  19  |   4  10   9   7   7   5   8   7    2 |    5  11   9   8  11   8  10   4    5
  20  |   4   8  17   8   8   5  16   8    3 |    5  10   9  12   9   4  11   5    4
  21E |   4  12  13  15  10   7  32  13    5 |    6  17  15  16  14   9  33  15    7
  22  |   6  12  19   8   8   8  19   9    4 |    4  15  15  10  12   7  21   6    5
  23E |   9  26  11  26  14  11  39   9    7 |   13  31  15  21  16  11  37   9   12
  24  |   6  14  22  13  11   7  13  10    4 |    6  10  18  12  15   7  14   9    5
  25  |   4  15  23   7   6   5  14   7    4 |    6  16  10   8  10   8  14   6    5
  26  |   3   8  13   5  14   4  16   4    3 |    3  11  14  10  21   7  14   6    6
  27  |   3   5   8   9   7   5   7   9    2 |    5  10  11   7  10   8   9   3    6
  28  |   4  11   9  15   9   5  12   9    3 |    5  14  12  18  15   8  17   6    8
  29  |   4   8  12  14   6   6   8  10    3 |    3   8  12  10   9   7  10   9    4
  31  |   5  36  16  15   8   6  13   8    5 |    5  32  14  16  15   8  12   6    7
------|--------------------------------------|--------------------------------------
 RMS  |   6  14  15  12  10   7  17   8      |T   6  15  13  13  13   7  18   7    6
 WRMS |   5  13  13  11   8   7  20   8      |NE  4  13  13  12  12   6  14   6    5

Table 3.0838.3   GPS week: 0838   Day: 3   MJD: 50113.0

               Weighted Average                Orbit Dynamics (7 days)
 PRN  | cod emr esa gfz igp jpl ngs sio  IGS |  cod emr esa gfz igp jpl ngs sio  IGS
------|--------------------------------------|--------------------------------------
   1  |   4   7   9   7   3   5  12   6    2 |    6  10   9   7   7   5  14   7    4
   2  |   4   4  15   8   6   4   6   6    2 |    5  12  14  12  11   7  12   5    7
   4  |   7   7  12   7   5   5  22   5    3 |    4   9  11  12  10   8  18   6    6
   5  |   4   5   8  10   8   4   9   8    2 |    4  11  11  13   8   6  10   6    5
   6  |   4   8  12   8   6   9  16   7    3 |    5  14  14  14   7   8  14   5    7
   7  |   5   8  11  11  17   6  13   9    3 |    6  13  18  17  18   6  17   7    8
   9  |   3   9  15   9   9   4  15   7    3 |    5   9  12   8   8   5  13   8    5
  12  |  12  13  14  11  13 ---  47 ---    9 |    7  12  11  15  13 ---  41 ---    9
  14E |   6  11  15  14   4   8   9   8    4 |    7  18  15  21  12   6  16   7   10
  15  |   5   7  12  13   9   6   8   6    3 |    5  12  12  17  16   7  12   5    7
  16E |  15   7  14  11  14   8  15  10    4 |   18  15  13  13  13   8  22   6   11
  17  |   4   6   8   8   4   5  11   7    2 |    4  12  13  14   9   5  17   4    6
  18  |   4   5   8   8   5   6   6   8    2 |    4  10  11   7   8   8  10   6    7
  19  |   4   4  11   7   4   5  11   8    2 |    6   9  11   9  11   9  11   9    8
  20  |   5   6   9   8   6 ---  12   8    3 |    3  11  10  12   8 ---  12   6    6
  21E |   6   9  14  15   5   7  32  14    5 |    7  17  15  15  11   7  28  13    9
  22  |   8  10  11   7   9   4  19   7    3 |    4  13  16  10  12   5  14   4    6
  23E |   6  18   9  28  19  15  55  12    8 |    7  26  15  22  19  12  44  10    9
  24  |   6   8  26   9   6   6  10   6    4 |    4  10  18  13   9   6  12   7    6
  25  |   5  11  17   5   8   7  11   6    3 |    6  10  12  10   9   9  11   5    6
  26  |   6   9  10  11   9   5  20   7    3 |    4   7  15  12   9   7  18   9    8
  27  |   3   4   8   6   3   5   9   8    2 |    5   9   9   9   9  10   9   4    7
  28  |   5   9  16  11  10   5  10   7    3 |    4  12  13  11  14   5  11   5    6
  29  |   5   6   7  10   8   5  10   7    2 |    5   7  11   9   7   5  10   5    5
  31  |   4  11  21  11   6   7  12  12    4 |    3  15  12  13  10   7  12  10    6
------|--------------------------------------|--------------------------------------
 RMS  |   6   9  13  11   9   6  20   8      |T   6  12  13  13  11   7  18   6    7
 WRMS |   5   9  12  10   8   6  23   7      |NE  4  11  12  11  10   6  15   6    6

Table 3.0838.4   GPS week: 0838   Day: 4   MJD: 50114.0

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

Table 3.0838.5   GPS week: 0838   Day: 5   MJD: 50115.0

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

Table 3.0838.6   GPS week: 0838   Day: 6   MJD: 50116.0

               Weighted Average                Orbit Dynamics (7 days)
 PRN  | cod emr esa gfz igp jpl ngs sio  IGS |  cod emr esa gfz igp jpl ngs sio  IGS
------|--------------------------------------|--------------------------------------
   1  |   7   8   9  10   4   6  19   3    3 |    5   8  11   8   9   7  13   8    6
   2  |   5   6  10   8   6   5   4   6    2 |    6  13  15  12  10   8  14   6    7
   4  |   5   8  16   8   6   5  15   8    3 |    4  10  15  12   9   5  10   6    5
   5  |   4   5  10   8   6   6   9   6    2 |    3  11  10  12   9   6  12   5    6
   6  |   3  11  10   7   4   5  17   8    3 |    5  13  12  14  10   6  17   4    8
   7  |   8   9  11   8   5   9  13   6    3 |    5  15  14  15  11   8  17   6    8
   9  |   4   9  10   7   4   5  12   8    3 |    6   8   9  10   7   7   7   6    5
  14E |   5   9  13  13   7   6  16   7    4 |    6  17  12  20  13   8  18   5    9
  15  |   7  12  17  13  11   6  14   8    4 |    6  15  16  15  14   6  14   6    6
  16E |  15   9  14  13  14   8  21   9    5 |   13  14  11  15  12   7  25   6   10
  17  |   4   7  10  10   4   6  17   6    3 |    5  10  12  12   8   5  16   4    5
  18  |   6   7   7   8   5   5  16   6    3 |    5  10  10  10   9   5  11   6    6
  19  |   4   5  10   6   5   4  10   7    2 |    7  11  11  10   9   8  13   5    8
  20  |   4   8  12   7   7   6  16   7    3 |    4   8  11  10   7   4  11   4    4
  21E |   7  10  15  15   6   6  20  10    4 |    8  16  13  16  13  11  19  13    9
  22  |   8   8  12   9   6   6  20  11    4 |    4  11  14  12  12   5  11   3    6
  23E |   9  17  15  25  13  14  47  13    7 |   10  27  13  23  17  13  25  11   12
  24  |   4   9  19   8   7   5  18   8    4 |    4   8  12  12   7   6  14   4    6
  25  |   5   7  10   8   9   3  27   6    3 |    8   9  13  11   9   8  10   5    8
  26  |   3   8   9   7   4   5  15   8    3 |    6   8  14  10  11   6  16   9    8
  27  |   3   4   8   7   3   5   8  10    2 |    8  10   9   9   9   9  11   4    7
  28  |   5   9  13   9   8   7  27   9    4 |    4  11  14  12  12   5  18   4    5
  29  |   8   7   8   9   5   5  14   5    3 |    7   8  10  10   7   5  12   4    5
  31  |   6  11  14  12   8   5  21   9    4 |    5  11  13  14  10   6  14   7    7
------|--------------------------------------|--------------------------------------
 RMS  |   6   9  12  11   7   6  19   8      |T   6  12  12  13  10   7  15   6    7
 WRMS |   6   9  11  10   6   6  16   8      |NE  5  10  12  11   9   6  13   5    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 4.0838   GPS week: 0838   MJD: 50110.0-50116.0

CENT| CLK EPO  |      BRUS      |      USUD      |      WILL      |
----|----------|----------------|----------------|----------------|
cod | cod 2195 |U  55   38   85 |U  51   37   96 |   52   35   82 |
emr | emr 2322 |   40   28   68 |   35   26   78 |U  42   22   58 |
esa | esa 2129 |  109   52  144 |U  98   64  206 |   79   54  121 |
gfz | gfz 1179 |  202  140  420 |U 256  151  464 |  187  129  321 |
igp | igp 2343 |   51   34   72 |   38   30   85 |   49   26   69 |
igs | igs 2361 |   43   29   67 |   44   29   90 |   44   27   66 |
jpl | jpl 2277 |U  37   24   60 |U  30   24   71 |   40   22   56 |

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 5.0838.0   GPS week: 0838   Day: 0   MJD: 50110.0

CENT| CLK EPO  |      BRUS      |      USUD      |      WILL      |
----|----------|----------------|----------------|----------------|
cod | cod 2261 |   54   34   70 |   44   35   92 |   50   33   76 |
emr | emr 2384 |   34   28   60 |   33   25   80 |   39   21   56 |
esa | esa 2261 |   55   37   86 |   60   39  148 |   55   28   73 |
gfz | gfz 1200 |  168  117  369 |  191  101  275 |  147  111  217 |
igp | igp 2399 |   40   28   64 |   33   28   83 |   50   26   70 |
igs | igs 2400 |   36   27   57 |   38   25   83 |   39   21   52 |
jpl | jpl 2384 |   32   23   53 |   25   20   63 |   43   23   59 |

Table 5.0838.1   GPS week: 0838   Day: 1   MJD: 50111.0

CENT| CLK EPO  |      BRUS      |      USUD      |      WILL      |
----|----------|----------------|----------------|----------------|
cod | cod 2090 |   50   34   76 |   44   30   79 |   57   33   86 |
emr | emr 2267 |   36   24   60 |   31   24   69 |   41   24   67 |
esa | esa 2163 |   92   56   91 |   53   35  114 |   66   38   94 |
gfz | gfz 1200 |  107   82  262 |  166   89  254 |  150   76  244 |
igp | igp 2390 |   54   32   63 |   36   28   71 |   41   22   63 |
igs | igs 2397 |   47   35   53 |   32   20   63 |   42   26   69 |
jpl | jpl 2381 |   39   23   55 |   27   20   56 |   40   23   71 |

Table 5.0838.2   GPS week: 0838   Day: 2   MJD: 50112.0

CENT| CLK EPO  |      BRUS      |      USUD      |      WILL      |
----|----------|----------------|----------------|----------------|
cod | cod 2188 |   53   37   76 |   53   32   77 |   49   37   83 |
emr | emr 2389 |   39   28   84 |   34   26   64 |   46   25   64 |
esa | esa 2180 |  104   64  122 |  144  100  282 |  100   83  175 |
gfz | gfz 1200 |  214  129  397 |  231  144  392 |  169   91  206 |
igp | igp 2383 |   70   50   98 |   48   32   94 |   52   28   80 |
igs | igs 2400 |   42   30   66 |   51   28   82 |   50   33   74 |
jpl | jpl 2286 |   34   27   66 |   33   21   56 |   43   25   59 |

Table 5.0838.3   GPS week: 0838   Day: 3   MJD: 50113.0

CENT| CLK EPO  |      BRUS      |      USUD      |      WILL      |
----|----------|----------------|----------------|----------------|
cod | cod 2237 |   51   38   84 |   53   35   86 |   46   28   85 |
emr | emr 2387 |   35   31   59 |   28   19   56 |   42   20   57 |
esa | esa 2178 |   94   38  128 |   89   59  208 |   56   52   94 |
gfz | gfz 1200 |  206  148  434 |  263  155  504 |  157  112  314 |
igp | igp 2378 |   41   30   65 |   31   22   62 |   53   24   78 |
igs | igs 2391 |   40   28   69 |   41   26   84 |   36   22   52 |
jpl | jpl 2185 |   31   25   55 |   28   16   60 |   36   19   51 |

Table 5.0838.4   GPS week: 0838   Day: 4   MJD: 50114.0

CENT| CLK EPO  |      BRUS      |      USUD      |      WILL      |
----|----------|----------------|----------------|----------------|
cod | cod 2117 |   56   39   79 |   54   46  119 |   54   34   85 |
emr | emr 2249 |   39   30   51 |   41   36  105 |   41   23   56 |
esa | esa 2044 |  175   70  227 |  109   76  220 |  100   57  146 |
gfz | gfz 1152 |  250  175  451 |  363  191  560 |  266  168  473 |
igp | igp 2248 |   44   28   54 |   39   38  110 |   49   27   68 |
igs | igs 2334 |   54   33   75 |   61   45  138 |   56   40   94 |
jpl | jpl 2138 |   39   24   46 |   38   36  110 |   39   24   50 |

Table 5.0838.5   GPS week: 0838   Day: 5   MJD: 50115.0

CENT| CLK EPO  |      BRUS      |      USUD      |      WILL      |
----|----------|----------------|----------------|----------------|
cod | cod 2252 |   62   35   95 |   55   42  111 |   52   40   77 |
emr | emr 2274 |   38   20   72 |   32   27   73 |   41   20   54 |
esa | esa 2037 |   66   41   86 |   73   45  149 |   63   27  100 |
gfz | gfz 1152 |  240  149  492 |  322  213  663 |  204  168  379 |
igp | igp 2303 |   43   28   67 |   35   28   76 |   48   24   60 |
igs | igs 2304 |   39   23   63 |   35   28   79 |   41   21   56 |
jpl | jpl 2280 |   37   20   63 |   28   26   75 |   38   20   53 |

Table 5.0838.6   GPS week: 0838   Day: 6   MJD: 50116.0

CENT| CLK EPO  |      BRUS      |      USUD      |      WILL      |
----|----------|----------------|----------------|----------------|
cod | cod 2221 |   60   45  111 |   52   36  101 |   52   37   82 |
emr | emr 2301 |   55   31   80 |   44   22   85 |   43   23   51 |
esa | esa 2043 |  130   44  199 |  122   68  260 |   96   68  132 |
gfz | gfz 1152 |  190  157  487 |  191  125  454 |  189  145  327 |
igp | igp 2303 |   59   33   81 |   41   25   91 |   52   28   62 |
igs | igs 2303 |   44   27   83 |   42   23   86 |   37   22   48 |
jpl | jpl 2284 |   47   23   78 |   28   21   61 |   38   21   43 |

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