Subject: [IGSREPORT-1236] Wk 0764 IGS Rapid Orbits
From: AC Coordinator / NRCan GSDivision
Date: Sun, 18 Sep 1994 5:36:15 PDT

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IGS Electronic Report    Sun Sep 18  5:36:15 PDT 1994      Message Number 1236
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Author: AC Coordinator / NRCan GSDivision
Subject: Wk 0764 IGS Rapid Orbits

Rapid Service IGS Orbit Combination - Week 0764   (Aug 28, 1994 - Sep 03, 1994)

Contacts: Y. Mireault ([email-masked]), J. Kouba ([email-masked]),

COMBINATION STRATEGY:

For a complete description of combination strategy, please refer to the report
posted on CDDIS (IGS07647.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 Rapid Service Orbit files generated and uploaded into CDDIS @ NASA/GSFC
are:

 IGS07640-6.SP3  IGS GPS ephemeris files for days 0-6, week 0764 in SP3 format.
 IGS07647.ERP    Earth rotation parameters (ERP) associated with ephemerides.
 IGS07647.SUM    Complete report.

REMARKS on IGS Rapid Service Orbit Combination:

1. Starting with week 0730, the above satellite clock correction combination
   was put in place. The centres used in the combination are EMR, ESA, GFZ and
   JPL. The other centres are excluded because they either provide broadcast
   clocks (COD, 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. Starting with the GPS week 750 a new clock combination scheme was put in
   place. Now the clock solution alignments to the GPS time use only non-SA
   broadcast clock corrections (currently PRN 12, 15, 20) and the centre clock
   weights are determined from the fit RMS of this alignment. In this
   way the quality of the clock alignments (to the GPS time) is not affected
   by SA and more realistic and objective weights are determined and used in
   the clock combination, provided the non-SA satellites are representative of
   each centre clock solution quality.

4. PRN28 (along with PRN12 and PRN15) was included in the clock weights 
   determination for the whole week since its Selective Availability (SA) was 
   turned off. However, PRN20 was excluded from the clock weights determination
   for the whole week because of an uncharacteristic clock behavior (either
   bad clock corrections or SA was activated).

5. PRN20 was set unhealthy on days 0-2 / Aug 28-30 (until 15:13).
   (ref. NANU 209-94242)

6. Centre SIO was not included in the orbit combination and the long arc 
   evaluation for the whole week since it was missing from CDDIS.

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

            Day (Date)  |   PRN   | Centres | Shifts/Outliers
           -------------+---------+---------+------------------
            1 (Aug 29)  |   ALL   |   EMR   | up to ~ 10 ns
            2 (Aug 30)  |1,4,24,31|   ESA   | up to ~ 30 ns
                        |   22    |   JPL   | ~ 15 ns      
            3 (Aug 31)  |   20    |   ESA   | ~ 300 ns
            4 (Sep 01)  |   23    |   EMR   | up to ~ 100 ns
            6 (Sep 03)  |   05    |   ESA   | ~ 10 us

8. There was a maneuver of PRN05 on day 5 (Sep 02) (ref. NANU 210-94245).
   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 NGS solution for 
   PRN05 on the day of maneuver was excluded from the combination based on the 
   assumption that it is an extrapolation instead of the actual modeling.
   Moreover, ESA, NGS and the combined solutions for PRN05 were excluded from 
   the long arc evaluation on day 5 due to unrealistic RMS caused by the 
   maneuver.

9. Some orbit solutions were excluded from combination because they were
   biasing the weighted average (generally indicated by long arc RMS). 
   They were still used for statistics computation.  The following table 
   lists the exclusion:

                     Day (Date)  | PRN  | Centres  
                    -------------+------+--------
                     0 (Aug 28)  |  20  | NGS    
                     2 (Aug 30)  |  20  | COD    
                     4 (Sep 01)  |  23  | EMR    
                     5 (Sep 02)  |  05  | NGS    

10.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 (Aug 29) | 00:00:00 |  20 | ESA,NGS  | Modelling problems
      5 (Sep 02) | 00:00:00 |  05 |   ALL    | Maneuver

11.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.

ORBIT COMBINATION AND EVALUATION STATISTICS:

For a complete description of tables and statistics, please refer to the report
posted on CDDIS (IGS07647.SUM).

Table 1: Week 0764 summary.                       (Aug 28, 1994 - Sep 03, 1994)

Table 1.0764.a   GPS week: 0764   MJD: 49592.0-49598.0

         Mean and standard deviations of transformation parameters.
         WRMS - orbit RMS weighted by the SP3 header accuracy codes.
         Units: meters, mas, ppb, nano-sec, nano-sec/day.

CENT|   DX   DY   DZ    RX    RY    RZ  SCL   RMS  WRMS |   TOFT  TDRFT    RMS
----|---------------------------------------------------|---------------------
cod |  .01  .01  .02   .57  -.36   .04   .0   .14   .09 |   -3.6    4.6   88.9
    |  .00  .01  .01   .56   .18   .24   .1             |   10.5   16.8
emr |  .02  .00 -.01   .67   .12   .08   .0   .91   .15 |-1558.6  -15.9    2.5
    |  .01  .00  .01   .53   .40   .16   .1             |   30.0    4.9
esa |  .00  .00 -.02   .88  -.19  -.06   .0   .15   .14 |   10.9    4.2    2.7
    |  .01  .01  .01   .32   .26   .30   .2             |   16.4   13.5
gfz | -.04  .01  .00   .63   .19  -.35   .0   .11   .11 |-1169.9  -15.2    8.4
    |  .01  .01  .01   .34   .19   .11   .1             |   56.1    7.3
jpl |  .01 -.02  .02   .70  -.38   .02   .0   .09   .09 |-1166.8  -28.3    3.5
    |  .00  .01  .00   .60   .31   .05   .1             |   57.3    7.2
ngs |  .03  .00 -.02   .26   .09   .74   .6726.43401.02 |   -2.3    2.3   91.6
    |  .02  .01  .02   .61   .24   .51   .2             |   12.1   18.7

Table 1.0764.b   GPS week : 0764   MJD: 49592.0-49598.0

         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  |   4   4   7   4   4   5   4 |
   2  |   3   7   5   5   5   5   5 |
   4  |   4   4   6   4   3   4   4 |
   5  |   3   3   3   4   4   0   8 | Maneuver on day 5.
   6  |   4   3   3   4   5   5   4 |
   7  |   4   4   3   5   5   7   6 |
   9  |   4   3   5   3   4   4   4 |
  12  |   3   3   5   4   4   4   4 |
  14E |   6   4   7   4   4   5   3 |
  15  |   3   3   3   3   4   3   3 |
  16E |   7   6   5   5   7   5   6 |
  17  |   4   3   3   4   4   3   3 |
  18  |   4   3   3   3   4   4   3 |
  19  |   3   3   4   3   4   4   3 |
  20  |   0  29   5   5   4   5   4 | Little or no data on days 0-1.
  21E |   5   7   7   5   5   4   4 |
  22  |   4   5   4   4   4   4   4 |
  23E |   6   4   4   6   6   5   5 |
  24  |   4   6   4   5   3   4   4 |
  25  |   5   5   4   6   5   5   3 |
  26  |   3   7   5   5   3   4   4 |
  27  |   4   2   4   3   5   3   4 |
  28  |   4   5   4   5   5   5   5 |
  29  |   4   5   3   5   4   4   2 |
  31  |   4   6   5   6   5   5   6 |

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.
         Units: meters, mas, ppb, nano-sec, nano-sec/day.

Table 2.0764.0   GPS week: 0764   Day: 0   MJD: 49592.0

CENT|   DX   DY   DZ    RX    RY    RZ  SCL   RMS  WRMS |   TOFT  TDRFT    RMS
----|---------------------------------------------------|---------------------
cod |  .00  .02  .01  -.10  -.20   .17   .0   .09   .07 |     .3    2.6   77.8
emr |  .02  .00 -.02  -.08   .36   .28  -.2   .10   .10 |-1513.4  -12.5    1.0
esa |  .00  .00  .00   .57  -.03  -.50  -.2   .14   .14 |   10.8    3.4    1.4
gfz | -.03  .00  .00   .09   .33  -.42  -.1   .08   .08 |-1079.5  -21.8    9.1
jpl |  .01 -.03  .01  -.31  -.32   .04   .2   .08   .08 |-1076.2  -35.9    6.4
ngs |  .07 -.03 -.02  -.44   .08   .66   .8 60.18   .20 |     .2    2.8   77.8

Table 2.0764.1   GPS week: 0764   Day: 1   MJD: 49593.0

CENT|   DX   DY   DZ    RX    RY    RZ  SCL   RMS  WRMS |   TOFT  TDRFT    RMS
----|---------------------------------------------------|---------------------
cod |  .00  .01  .01  -.01  -.56  -.26   .1   .09   .08 |    1.2   -1.8   74.8
emr |  .03  .00 -.02   .16   .45   .10  -.1   .14   .11 |-1530.0  -19.2    3.2
esa |  .00 -.01 -.01   .42   .26  -.04   .0   .20   .17 |  -14.2    9.3    2.8
gfz | -.04  .03 -.01   .24   .42  -.38   .0   .20   .21 |-1118.4  -19.8    9.7
jpl |  .00 -.02  .01   .10  -.02   .05   .0   .10   .10 |-1114.9  -36.1    3.0
ngs |  .02  .00 -.05  -.77  -.31  1.70   .5   .35   .27 |   10.0  -15.0   98.5

Table 2.0764.2   GPS week: 0764   Day: 2   MJD: 49594.0

CENT|   DX   DY   DZ    RX    RY    RZ  SCL   RMS  WRMS |   TOFT  TDRFT    RMS
----|---------------------------------------------------|---------------------
cod |  .01  .02  .02   .32  -.43  -.24  -.1   .28   .09 |  -26.1   41.4  137.9
emr |  .02  .01 -.02   .29   .65   .24   .1   .11   .11 |-1545.8  -24.7    1.7
esa |  .00 -.01 -.02   .70  -.19  -.12  -.4   .16   .16 |   12.5  -19.4    2.6
gfz | -.04  .01 -.01   .60   .30  -.34  -.1   .10   .10 |-1155.2  -20.1    8.9
jpl |  .01 -.02  .01   .62  -.05   .07   .1   .08   .08 |-1147.7  -35.2    2.3
ngs |  .03 -.01  .01   .42   .09   .71   .8   .22   .21 |  -27.0   41.4  138.0

Table 2.0764.3   GPS week: 0764   Day: 3   MJD: 49595.0

CENT|   DX   DY   DZ    RX    RY    RZ  SCL   RMS  WRMS |   TOFT  TDRFT    RMS
----|---------------------------------------------------|---------------------
cod |  .00  .01  .02   .50  -.22   .11   .1   .09   .08 |   -5.0    5.3   76.7
emr |  .01  .00 -.01  1.18   .07  -.07  -.1   .10   .10 |-1568.6  -10.1    1.1
esa |  .01  .00 -.04   .88  -.13   .43  -.2   .15   .14 |    9.2   25.9    5.0
gfz | -.03 -.01  .00   .87   .08  -.50   .2   .09   .09 |-1187.1   -1.4    8.0
jpl |  .00 -.02  .02  1.03  -.48  -.02  -.1   .10   .10 |-1180.6  -19.3    2.3
ngs |  .03  .01 -.01   .78   .26   .53   .6   .18   .17 |   -5.0    5.5   76.7

Table 2.0764.4   GPS week: 0764   Day: 4   MJD: 49596.0

CENT|   DX   DY   DZ    RX    RY    RZ  SCL   RMS  WRMS |   TOFT  TDRFT    RMS
----|---------------------------------------------------|---------------------
cod |  .00  .02  .01   .81  -.56  -.06   .2   .11   .11 |    5.5   -7.3   83.7
emr |  .02  .00 -.01  1.13  -.18   .15   .1  2.40   .32 |-1570.5  -15.0    4.9
esa |  .00  .01 -.02  1.24  -.38  -.18   .1   .16   .14 |   15.2    5.8    1.5
gfz | -.03  .00  .00   .91  -.06  -.39   .0   .07   .07 |-1193.3  -14.9    8.3
jpl |  .00 -.01  .02  1.08  -.61   .05   .0   .10   .09 |-1192.6  -24.6    2.3
ngs |  .04 -.01 -.03   .82   .24  1.02  1.0   .19   .19 |    7.0  -10.5   79.5

Table 2.0764.5   GPS week: 0764   Day: 5   MJD: 49597.0

CENT|   DX   DY   DZ    RX    RY    RZ  SCL   RMS  WRMS |   TOFT  TDRFT    RMS
----|---------------------------------------------------|---------------------
cod |  .01  .00  .02  1.09  -.42   .12   .0   .11   .10 |   -2.7   -1.3   75.5
emr |  .02  .00 -.02  1.04  -.52  -.03   .1   .09   .09 |-1586.2  -16.5    1.6
esa |  .00  .00 -.01  1.18  -.57   .22   .4   .14   .14 |   40.5   -1.2    1.7
gfz | -.04  .00  .00   .86  -.03  -.25   .0   .09   .09 |-1217.0  -18.8    7.6
jpl |  .01 -.01  .02  1.29  -.89  -.07  -.1   .09   .09 |-1218.9  -25.2    4.2
ngs |  .03  .01 -.02   .48  -.15   .41   .5************ |   -2.6   -2.1   75.2

Table 2.0764.6   GPS week: 0764   Day: 6   MJD: 49598.0

CENT|   DX   DY   DZ    RX    RY    RZ  SCL   RMS  WRMS |   TOFT  TDRFT    RMS
----|---------------------------------------------------|---------------------
cod |  .01  .02  .01  1.39  -.12   .41  -.2   .11   .10 |    1.7   -6.4   77.9
emr |  .02 -.01  .00  1.00  -.03  -.13  -.1   .11   .10 |-1595.5  -13.0    1.4
esa |  .01  .01 -.02  1.15  -.29  -.21   .1   .12   .11 |    2.0    5.9    1.5
gfz | -.03  .00  .00   .87   .31  -.16  -.1   .09   .09 |-1239.0   -9.8    7.2
jpl |  .00 -.02  .02  1.11  -.27   .02  -.1   .08   .08 |-1236.6  -21.9    1.6
ngs |  .01  .00 -.02   .51   .38   .13   .4   .18   .21 |    1.7   -6.2   77.9

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" flags eclipsing satellites.
         Units: cm.

Table 3.0764.0   GPS week: 0764   Day: 0   MJD: 49592.0

               Weighted Average                Orbit Dynamics (7 days)
 PRN  | cod emr esa gfz jpl ngs  IGS |  cod emr esa gfz jpl ngs  IGS
------|------------------------------|------------------------------
   1  |   3   6  15   9   9  18    4 |   11  11  16  17  16  13   11
   2  |   3   5   7   8   8  18    3 |   12  13  17  14  13  18   12
   4  |   4  12  17   7   5  12    4 |    7  15  11  11   9  13    8
   5  |   2  11   9   5   9  13    3 |   11  12  11  14  17  13   11
   6  |   4   7   9  10   5  28    4 |   10  11  12  13  11  21   10
   7  |   7   8  12   9  10  19    4 |   11  12  14  13  14  13   10
   9  |   4  12  10   9   6  21    4 |    7  11  13  10  13  19    9
  12  |   2   7   9   7   5  17    3 |    9   7  12  10  11  12    8
  14E |  10  14  16  12   9  29    6 |   17  25  25  24  25  28   20
  15  |   5   8   7   8   7  14    3 |    8  10  13  12  10  16    8
  16E |  22  17  16   9   9  29    7 |   11  13  17  16  18  29   13
  17  |   7   9  14   8   7  13    4 |    7   7  10   7   9  14    6
  18  |   8   5  20   5   6  13    4 |   13  12  15  14  14  13   12
  19  |   5   6  15   3   3   9    3 |    8  13  13  10  10  12    9
  20  | --- ---   3 --- --- >>>    0 |  --- ---   2 --- ---   2    2
  21E |  12   9  15   8  12  16    5 |   11  27  18  20  26  35   18
  22  |   6   6  16   8   8  18    4 |   12  13  14  10  14  19   11
  23E |  20   7  13  11  10  17    6 |   38  90  38  41  39  43   39
  24  |   7  15  19   7   5   8    4 |    5  15  11   9   9  12    8
  25  |   7  15  14   9   6  23    5 |   10  13  12  10  12  28    8
  26  |   7   7  11   5   4  13    3 |   14  12  19  10  15  17   12
  27  |  12   8   8   5  10  16    4 |    8  13  11  12  12  20    9
  28  |   8   7  10  11   8  24    4 |   11   9  13  12  13  32   10
  29  |   5   9  21   3   5  28    4 |   13  11  11  13  12  14   10
  31  |   6   7  11   8   9  17    4 |   11  11  13  13  15  25   10
------|------------------------------|------------------------------
 RMS  |   9  10  13   8   8 >>>      |   12  22  15  15  16  21   13
 WRMS |   7  10  13   8   8  20      |

Table 3.0764.1   GPS week: 0764   Day: 1   MJD: 49593.0

               Weighted Average                Orbit Dynamics (7 days)
 PRN  | cod emr esa gfz jpl ngs  IGS |  cod emr esa gfz jpl ngs  IGS
------|------------------------------|------------------------------
   1  |  10   5  11   8   8  18    4 |   12  14  22  12  15  18   11
   2  |   5   6  39  11   8  44    7 |   11  12  23  14  12  40   11
   4  |   8  14  17   8   2  14    4 |    9  11  13   9  10  18    7
   5  |   5   7  15   8   6   9    3 |   12   9  14  12  15  11   11
   6  |   8   6  10  13   3  11    3 |   10  12  13  15  12  13   11
   7  |   6  12   9  10   7  14    4 |   13  14  14  13  12  13   11
   9  |   4  10   7   9   3  17    3 |    9  10  16   8  11  14    8
  12  |   3   6  12  10   4  16    3 |    8   7  11   7   8  11    6
  14E |  10  10  13  12   7  15    4 |   23  18  32  24  25  24   22
  15  |   7   8  10   9   4  12    3 |    9   8  11   7   8  16    7
  16E |  18  16   9  15   8  23    6 |   13  13  17  15  18  33   14
  17  |   4   8  10   8   7  17    3 |    8   8  14   9  11  26    8
  18  |   7   7   9   8   5   9    3 |   15  12  12  17  13  19   13
  19  |   8   5   8   8   6  18    3 |    8   7  12  12   9  19    7
  20  | ---  52  19  85  33 130   29 |  ---  31  13  38  22  72   12
  21E |  12  11  33  19  11  27    7 |    8  23  21  18  20  27   13
  22  |  11   6  13  15   9  36    5 |   14  12  17  11  16  32   12
  23E |   8   4  11   6   6  30    4 |   42  91  45  43  45  51   44
  24  |   5  11  34  15   4  23    6 |    6   9  22  10   9  24    7
  25  |   7  10  16   6   5  41    5 |   12  10  12   7  10  46   10
  26  |   6  18  36  11   9  19    7 |   13  13  31  11  16  14    9
  27  |   4   6   9   8   3  13    2 |    7   7   9   9   8  12    6
  28  |   8   6  22  11   5  28    5 |   13   9  13  10  11  20    9
  29  |   9   8  17  12   4  29    5 |   15  11  10  14  12  18   11
  31  |   7  11  27  11  10  31    6 |   12  10  15  13  15  24    9
------|------------------------------|------------------------------
 RMS  |   8  14  19  20   9  35      |   14  22  19  16  16  28   13
 WRMS |   8  11  16  20   9  26      |

Table 3.0764.2   GPS week: 0764   Day: 2   MJD: 49594.0

               Weighted Average                Orbit Dynamics (7 days)
 PRN  | cod emr esa gfz jpl ngs  IGS |  cod emr esa gfz jpl ngs  IGS
------|------------------------------|------------------------------
   1  |   9  19  28  12   6  29    7 |   10  22  23  14  15  31   12
   2  |   7   5   8  12  11  30    5 |   11  12  16  15  12  42   12
   4  |   6  13  16   9   6  37    6 |    7  13   8  10   9  30    8
   5  |   4   8  10   7   6  16    3 |    9  10  15  12  16  20   10
   6  |   6   4   7  10   4  19    3 |   10  11  11  15  12  26   11
   7  |   6   9   9   9   7  12    3 |   12  13  18  15  14  14   11
   9  |   6  10  25  11   6  17    5 |    8   7  18  10  10  18    8
  12  |   4   5  30  12   4  10    5 |    9   8  13  10   9   9    8
  14E |  15  23  14  10   9  33    7 |   16  22  28  18  22  33   17
  15  |   6   5  11   5   4  23    3 |    7   7   9  10   7  23    7
  16E |  10  13  10   9   8  25    5 |   16  22  21  16  20  33   18
  17  |   4   6  13   5   7  17    3 |    6   9  12   8  10  16    6
  18  |   5   4   8   4   5  21    3 |   13  11  11  14  13  24   12
  19  |  11   7  10   3   8  20    4 |    7  12  10   9   9  25    8
  20  | 133  12   8  13   5  15    5 |   17  18  12  20  16  32   13
  21E |  13  12  28  16  15  19    7 |   11  25  18  22  28  22   17
  22  |   6   6  19   8   8  10    4 |   12  12  18  11  13  20   11
  23E |  10   4  12   6   5  24    4 |   24 139  33  26  30  29   26
  24  |   8   8  14   4   6  20    4 |    6  12  16   9  11  21    9
  25  |   8  13  12   6   6  14    4 |   12  12  13   9  11  16    8
  26  |  18   9  11  10   9  20    5 |   15  11  20  11  13  19    9
  27  |   8  10  10  11   6  18    4 |    7  12  12  12   8  21    9
  28  |  11   9  16   8   6  18    4 |   13   9  13   9  10  16    8
  29  |   8   7  12   7   5  16    3 |   11  11  11  12  11  17    9
  31  |  11  12  15  12   7  21    5 |   12  15  15  18  12  22    9
------|------------------------------|------------------------------
 RMS  |  28  10  16   9   7  21      |   11  31  16  14  14  24   11
 WRMS |   9  10  15   9   7  21      |

Table 3.0764.3   GPS week: 0764   Day: 3   MJD: 49595.0

               Weighted Average                Orbit Dynamics (7 days)
 PRN  | cod emr esa gfz jpl ngs  IGS |  cod emr esa gfz jpl ngs  IGS
------|------------------------------|------------------------------
   1  |   7   6  15  10  10  18    4 |   14  15  14  18  21  17   12
   2  |  10   8  17  10   9  16    5 |   11  13  17  15  13  21   11
   4  |   7   9  13   7   8  13    4 |    9  11  12  11  13  13    8
   5  |   5   8  14  10   6  14    4 |   12  10  14  13  16  16   11
   6  |  10   8  10  11  10   7    4 |   11  12  14  15  18  17   11
   7  |   8   7  12   9  10  23    5 |   12  13  13  14  12  21   10
   9  |   5   8  12   7   7  13    3 |   10  10  11  11  13  19    8
  12  |   6   7  15   9   7  13    4 |   12   8   9  11  13  18    8
  14E |   6   9   9   6   9  20    4 |   15  16  20  20  22  19   17
  15  |   6   6   9   7   6  14    3 |    9   9  13   8   9  18    7
  16E |   8  11  10  12  13  18    5 |   12  15  19  17  22  21   13
  17  |   5   7  10   4   9  20    4 |    7   9  12   9  12  27    7
  18  |   5   6   8   4   7  11    3 |   14  13  13  14  15  15   12
  19  |   6   9  11   6   4  13    3 |   11  12  11  10  10  17    8
  20  |  13  17  15   5   7  11    5 |   17  14  13  16  17  17   12
  21E |  13   9  16  10  10  11    5 |   11  24  25  22  24  21   18
  22  |   9   8  16   5  10  15    4 |   13  12  16  10  13  18   10
  23E |  12   8   8  11  17  25    6 |   35 187  44  46  41  46   42
  24  |   8  13  13   8   7  19    5 |    7  17  13  11  12  17    8
  25  |  10  16  16   8   8  26    6 |   13  14  17  11  15  33    9
  26  |   9   8  12  13  12  13    5 |   12  13  16  12  17  20   10
  27  |   5   8  11   5   5  16    3 |    8   7  10   8  10  20    7
  28  |   8  12  21   9   6  14    5 |   13  10  16  12  13  14    9
  29  |   6   5  20   4  11  26    5 |   17  12  11  13  15  14   11
  31  |   8   6  26  12   7  21    6 |   11  11  13  13  12  22    9
------|------------------------------|------------------------------
 RMS  |   8   9  14   8   9  17      |   13  39  16  16  17  21   13
 WRMS |   8   9  14   8   9  17      |

Table 3.0764.4   GPS week: 0764   Day: 4   MJD: 49596.0

               Weighted Average                Orbit Dynamics (7 days)
 PRN  | cod emr esa gfz jpl ngs  IGS |  cod emr esa gfz jpl ngs  IGS
------|------------------------------|------------------------------
   1  |   9   8  15   8  10  17    4 |   11  11  11  14  18  16   10
   2  |  10   8  21   9  10  17    5 |   11  13  23  14  13  24   12
   4  |  10  10  14   6   4   8    3 |   10  14  16  10  15  19    9
   5  |  13   7  14   3   7   9    4 |    9  12  11  14  15  15   11
   6  |  18   7  13   8  10  14    5 |   12  12  19  13  15  22   11
   7  |  10  11  20   7   6  28    5 |   11  13  20  13  14  39   12
   9  |   6  12  13   7   6  17    4 |    8  16  25  10  15  28   10
  12  |   6  10   7   9   7  18    4 |    8  17  19   9  15  26    9
  14E |   8  11   7   6   7  16    4 |   10  19  18  17  19  26   15
  15  |  11  10   8   6   5  15    4 |   10   8  19  12  13  22    7
  16E |  10  16   9   9  26  20    7 |    9  17  21  15  27  19   14
  17  |   7   9  10   5   8  19    4 |    6   8  14   9  13  22    7
  18  |   8   9  15   7   8  17    4 |   14  12  14  13  17  16   12
  19  |  11   9  19   6   5  16    4 |   10  11  12  10  14  21    8
  20  |   7  15  18   5   6  13    4 |   18  15  18  14  16  20   12
  21E |   8  14  16   9   9  22    5 |   17  27  25  18  23  25   19
  22  |  14   3  20   6   8  13    4 |   15  10  15  14  16  16   10
  23E |  20 >>>  11   7  11  16    6 |   19 999  16  23  19  27   20
  24  |   5   7  12   8   7  11    3 |    7  10  16   9  17  22    9
  25  |   9  15  18   5   7  22    5 |   12  16  19  14  17  23   10
  26  |   4   8   9   4   8  15    3 |   11  13  15  13  18  21   11
  27  |  11  12  17   6   5  19    5 |   13  13  17   9  12  24    8
  28  |  12  13  21   6   8  17    5 |   14  13  20  11  13  20    8
  29  |   7   7  12   6   5  29    4 |   11  10  13  13  15  18   10
  31  |  13   8  21   7   8  23    5 |   14  12  10  13  13  24    9
------|------------------------------|------------------------------
 RMS  |  10 240  15   7   9  18      |   12 200  17  13  16  22   11
 WRMS |  10  32  14   7   9  18      |

Table 3.0764.5   GPS week: 0764   Day: 5   MJD: 49597.0

               Weighted Average                Orbit Dynamics (7 days)
 PRN  | cod emr esa gfz jpl ngs  IGS |  cod emr esa gfz jpl ngs  IGS
------|------------------------------|------------------------------
   1  |  12   9  17  10  13  13    5 |   11  12  16  15  16  19   10
   2  |  10   4  12  16   6  24    5 |   11  12  19  14  12  28   11
   4  |   8  11  13   3   5  17    4 |   10  10  11  11  11  17    9
   5  | --- ---   1 --- --- >>>    0 |  --- ---   0 --- ---   0  ---
   6  |  14   9  13  12  10  23    5 |   10  12  12  14  14  21   11
   7  |  18   9  22  12  16  29    7 |   11  15  17  16  14  27   13
   9  |  13   9  13   7   6  22    4 |    9   8  13  10  12  17    7
  12  |  10   8   9   9   8  24    4 |    9   8  11   9  13  16    7
  14E |   6   8   9   9  12  26    5 |   13  15  22  20  18  21   16
  15  |   7   8  11   7   8  13    3 |   11   8  11   9  10  13    6
  16E |   7  11   9   8  13  26    5 |   18  15  15  14  19  21   15
  17  |   6   5   9   5   4  24    3 |    7   9  12   9   9  20    7
  18  |   4   6   7  12   8  18    4 |   13  13  15  15  14  14   12
  19  |   8  10  14  10   6  12    4 |    9  11  12  10   9  12    9
  20  |   6  14  19   6   8  21    5 |   16  17  14  16  20  14   13
  21E |   7   8  15  12  10  10    4 |   16  20  20  17  19  18   16
  22  |  11   5  15   8   9  22    4 |   15  12  12  13  11  25   10
  23E |  14   9  15   7   9  14    5 |   41 184  50  41  44  42   42
  24  |   6   8  14  12   4  22    4 |    6  10  13  13   8  17    7
  25  |  11  15  12   7  13  16    5 |   14  15  18  12  13  21   11
  26  |   9   7  14   4   6  21    4 |   11  12  15   9  12  19    9
  27  |   7   7  15   7   3  14    3 |    9  10  17   9  11  15    8
  28  |  12   6  13   6   8  28    5 |   14  10  16  10  11  28    9
  29  |   8   5  11   7   4  33    4 |   11  10  12  13  11  15   10
  31  |  17   8  13   8   8  26    5 |   14  13  11  14  11  26    9
------|------------------------------|------------------------------
 RMS  |  10   9  13   9   9 >>>      |   14  39  17  15  15  21   13
 WRMS |   9   9  14   9   9 >>>      |

Table 3.0764.6   GPS week: 0764   Day: 6   MJD: 49598.0

               Weighted Average                Orbit Dynamics (7 days)
 PRN  | cod emr esa gfz jpl ngs  IGS |  cod emr esa gfz jpl ngs  IGS
------|------------------------------|------------------------------
   1  |   7   9   6   7  10  15    4 |   12  15  16  15  19  21   13
   2  |  18   9  18  11   7  13    5 |   11  14  15  13  14  18   11
   4  |   5  14  12   6   6  17    4 |   10  13  19  12  19  20    9
   5  |  15  25  10  10 ---  24    8 |   34  31  29  34 ---  34   31
   6  |  11   8  12   8   9  19    4 |   11  11  18  13  18  22   11
   7  |  14   8  22   7  13  14    6 |   12  14  18  13  18  18   12
   9  |  10  12   6   7   5  22    4 |    8  12  16   9  18  26    9
  12  |  11   9   7   9   8  20    4 |   11  10  16   8  19  16    8
  14E |   6   9   8   5   5  18    3 |   15  13  16  15  18  14   15
  15  |   7   6   7   8   4  11    3 |    8   8  18  11  17  18    7
  16E |  14  12  16  14   6  24    6 |   15  17  22  19  21  23   15
  17  |   6   3   8   4   5  17    3 |    7   8  15   9  16  20    8
  18  |   7   5   5   5   6  14    3 |   15  13  16  16  19  20   13
  19  |   5   6  10   8   5  13    3 |    9   9  13  11  16  18    9
  20  |   7  11  11   6   6  12    4 |   13  14  16  17  19  20   12
  21E |   7   9  17   7   9  13    4 |   16  22  20  21  23  21   18
  22  |  14   7  12   6  11  12    4 |   12  12  17  15  18  18   11
  23E |   7   9  14  11   6  30    5 |   36 147  42  38  36  38   37
  24  |   9  12   9   6   8  22    4 |    7  13  18   9  17  24    8
  25  |   6  10  10   4   7   7    3 |    9  12  18  13  20  15   11
  26  |   8   9  12   7   7  17    4 |    9  11  18  14  16  18   10
  27  |   6  14   9   6   7  15    4 |    9  15  18   9  16  22    8
  28  |  14   7  14   6   6  26    5 |   14  12  17  13  17  25    9
  29  |   7   7   4   4   6  11    2 |   11  10  16  13  18  15   11
  31  |  17   7  11  16  12  21    6 |   14  11  14  23  16  23   10
------|------------------------------|------------------------------
 RMS  |  10  10  11   8   8  18      |   14  32  19  16  19  21   14
 WRMS |  10   9  10   8   8  20      |

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