Subject: [IGSREPORT-2212] Wk 0823 IGS Final Orbits
From: AC Coordinator / NRCan GSDivision
Date: Wed, 6 Dec 1995 10:51:58 PST

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IGS Electronic Report    Wed Dec  6 10:51:58 PST 1995      Message Number 2212
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Author: AC Coordinator / NRCan GSDivision
Subject: Wk 0823 IGS Final Orbits

IGS Final Orbit Combination Week 0823             (Oct 15, 1995 - Oct 21, 1995)

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 (IGS08237.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 IGS Final Orbit files generated and uploaded into CDDIS @ NASA/GSFC are:

 IGS08230-6.SP3  IGS GPS ephemeris files for days 0-6, week 0823 in SP3 format.
 IGS08237.ERP    Earth rotation parameters (ERP) associated with ephemerides.
 IGS08237.SUM    Complete report.

  The old Rapid Service files have been renamed to:

 IGR08230-6.SP3  Rapid Service ephemeris files for days 0-6.
 IGR08237.ERP    Rapid Service earth rotation parameters (ERP).
 IGR08237.SUM    Rapid Service complete report.

REMARKS on IGS Final Orbit Combination:

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

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

3. Centre clock weights were determined using the following non-SA satellites:
   PRN12, PRN15 and PRN28 except on day 3 (Oct 18) when only PRN15 and PRN28
   were used since PRN12 exibited jumps of the order of 780 ns that corrupted 
   the clock weights on that day (see REMARK 4);

4. PRN26 was set unhealthy on day 6/wk 822 (Oct 14) from 17:00 until 06:28 on 
   day 0/wk823 (Oct 15) (NANU 218-95288); 
   PRN19 was set unhealthy on day 1 (Oct 16) from 19:18 until 23:31 (NANU 
   220-95289).  This explains higher clock RMS for NGS on day 1;
   PRN26 was set unhealthy on day 2 (Oct 17) from 09:40 until 18:46 (NANU 
   223-95291).  This explains higher clock RMS for NGS on day 2;
   PRN12 was set unhealthy on day 3 (Oct 18) from 15:00 until 19:20 (NANU 
   224-95291).  This explains higher clock RMS for NGS on day 3;

5. 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 (Date)  | Centres  | Shifts/Resets
             -------------+----------+----------------------
              4 (Oct 19)  |   GFZ    | ~ + 700 nsec (~21:00)

6. 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 the RMS computation. The following table lists the exclusions:

            Day (Date)  |   PRN    | Centres | Shifts/Outliers
           -------------+----------+---------+------------------
            1 (Oct 16)  |    31    |   GFZ   | ~ 250 ns

7. Unusually high X and Y rotation values (RX: days 3-6, RY: most of the week)
   could be noticed in Table 2.  This is caused by an unexplained offset between
   the IERS Bulletin B and the IGS Y and X pole solutions on these days. 

8. Some 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.  The following table 
   lists the exclusions:

                     Day (Date)  | PRN  | Centres  
                    -------------+------+--------
                     0 (Oct 15)  | 26   | ESA
                     5 (Oct 20)  | ALL  | SIO (a)
                     6 (Oct 21)  | ALL  | SIO (a)

   (a) Z-rotation problems that affected the combined solution (see Table 2).

9. 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 B 
   were used.

10.Anti-Spoofing (AS) was switched off around 00h00 UT on Oct 10 (day 2/wk822 ) 
   for all block II satellites.

ORBIT COMBINATION AND EVALUATION STATISTICS:

For a complete description of tables and statistics, please refer to the report
posted on CDDIS (IGS08237.SUM).

Table 1: Week 0823 summary.                       (Oct 15, 1995 - Oct 21, 1995)

Table 1.0823.a   GPS week: 0823   MJD: 50005.0-50011.0

         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  62 | .00  .03  .00  -.70  -.53  -.14   .0  .07  .07 |    1.1   -2.3    1.2
        | .01  .00  .00   .32  1.08   .20   .1           |    5.9   12.4
emr  27 | .01 -.01  .00  -.07  -.24   .04  -.2  .07  .07 |-2660.6   -3.5     .7
        | .00  .00  .01   .52  1.12   .11   .1           | 4588.9    6.5
esa  47 | .00 -.01 -.03   .21  -.13   .23   .0  .22  .12 |   -8.1  -13.3    1.1
        | .01  .01  .01   .41  1.07   .16   .1           |   22.4   18.7
gfz  47 |-.03 -.02  .00  -.37  -.20  -.17  -.2  .09  .09 |  -73.0 -149.1   10.0
        | .00  .00  .00   .40  1.02   .14   .1           |  272.9  263.6
jpl  34 | .01  .03  .00  -.59  -.30   .11   .1  .07  .07 |-1347.3    -.9     .6
        | .01  .00  .00   .53  1.13   .12   .1           | 3537.2    8.8
ngs  43 | .02 -.02  .01  -.42  -.02   .07  -.1  .11  .10 |-1169.3 2025.559351.6
        | .01  .00  .01   .50  1.26   .27   .1           | 3259.7 5628.7
sio  102| .00 -.02  .01  -.15   .25  -.55   .2  .10  .10 |     .0     .0     .0
        | .01  .01  .00   .50  1.14   .87   .1           |     .0     .0

Table 1.0823.b   GPS week : 0823   MJD: 50005.0-50011.0

         Satellite position sigmas for the combined orbits
         (coded in the IGS SP3 orbit files).
         "E" flags eclipsing satellites.
         Units: cm.

              Day of GPS week
 PRN  |   0   1   2   3   4   5   6 |  Remarks
------|-----------------------------|------------------------------------------
   1  |   3   3   2   3   3   3   3 |
   2  |   3   3   3   2   3   3   3 |
   4  |   2   2   2   2   4   3   3 |
   5  |   2   2   2   3   2   3   3 |
   6E |   4   4   4   3   3   3   3 |
   7E |   4   4   3   3   4   4   4 |
   9  |   3   3   3   3   3   4   3 |
  12  |   3   2   2   2   3   3   3 |
  14  |   2   3   2   2   3   2   3 |
  15  |   2   2   2   3   3   3   3 |
  16  |   3   3   2   2   2   3   3 |
  17  |   4   4   3   3   3   3   3 |
  18  |   3   3   3   2   3   3   3 |
  19  |   3   4   3   3   4   4   3 |
  20  |   2   3   3   3   3   3   3 |
  21  |   3   2   3   2   3   3   3 |
  22  |   3   2   2   2   2   3   3 |
  23  |   3   4   4   3   3   4   4 |
  24  |   3   3   3   4   4   4   5 |
  25  |   3   3   3   3   4   4   4 |
  26  |   3   3   4   3   3   3   3 |
  27  |   3   3   3   3   3   3   3 |
  28E |   4   3   3   3   3   3   4 |
  29  |   3   3   2   3   3   3   3 |
  31E |   4   4   4   4   3   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 2.0823.0   GPS week: 0823   Day: 0   MJD: 50005.0

CENT STA|  DX   DY   DZ    RX    RY    RZ  SCL  RMS WRMS |   TOFT  TDRFT    RMS
--------|------------------------------------------------|---------------------
cod  62 | .00  .04  .00  -.32  1.08  -.42   .0  .08  .07 |    2.7   -9.2    1.2
emr  27 | .01 -.01  .00   .47  1.46  -.04  -.2  .08  .08 |   22.9  -10.3     .9
esa  46 |-.01 -.02 -.05   .72  1.49   .13   .0  .48  .14 |  -31.9  -12.3    1.1
gfz  46 |-.04 -.02  .00   .03  1.33  -.37  -.2  .09  .09 |   21.9   -8.7    3.2
jpl  34 | .01  .04  .01   .14  1.49   .19   .0  .07  .07 |   23.1  -10.2     .4
ngs  42 | .03 -.03  .02  -.10  2.10   .65   .0  .11  .11 |    4.7   -6.9   75.1
sio  104|-.01 -.02  .01   .55  1.90   .04   .2  .07  .07 |     .0     .0     .0

Table 2.0823.1   GPS week: 0823   Day: 1   MJD: 50006.0

CENT STA|  DX   DY   DZ    RX    RY    RZ  SCL  RMS WRMS |   TOFT  TDRFT    RMS
--------|------------------------------------------------|---------------------
cod  62 |-.01  .04  .00  -.27   .64  -.22   .0  .07  .07 |    6.5  -10.6    1.7
emr  27 | .02 -.02  .01   .52   .79   .02  -.1  .09  .09 |   21.1  -11.1     .7
esa  46 | .00 -.01 -.03   .49  1.02   .38   .2  .13  .11 |  -12.2   -2.9    1.0
gfz  45 |-.03 -.01 -.01   .15   .91  -.20  -.1  .10  .09 |   20.8  -10.8    7.8
jpl  34 | .01  .03  .00   .00   .78   .07   .1  .07  .07 |   21.3  -11.3     .6
ngs  43 | .02 -.02  .00   .34   .94   .03  -.2  .10  .09 |-8555.014780.0 157000
sio  96 | .00 -.03  .01   .39  1.37   .29   .3  .08  .08 |     .0     .0     .0

Table 2.0823.2   GPS week: 0823   Day: 2   MJD: 50007.0

CENT STA|  DX   DY   DZ    RX    RY    RZ  SCL  RMS WRMS |   TOFT  TDRFT    RMS
--------|------------------------------------------------|---------------------
cod  63 |-.01  .04  .01  -.55  -.18   .18   .0  .07  .07 |   -3.8    4.8    1.1
emr  29 | .01 -.01 -.01   .24   .22  -.15  -.1  .06  .06 |   10.5    4.3     .7
esa  47 | .01 -.02 -.03   .44  -.05   .48   .0  .12  .11 |   -5.9    1.0     .8
gfz  48 |-.03 -.02  .00  -.12   .10  -.26  -.2  .09  .08 |    8.6    7.5    3.9
jpl  33 | .03  .03  .00  -.33  -.10  -.01   .1  .07  .07 |-9368.3   -2.4     .7
ngs  44 | .01 -.02  .01  -.15   .09  -.16  -.1  .11  .11 |  371.8 -601.0 3046.0
sio  105|-.01 -.02  .01   .11   .89   .12   .1  .08  .08 |     .0     .0     .0

Table 2.0823.3   GPS week: 0823   Day: 3   MJD: 50008.0

CENT STA|  DX   DY   DZ    RX    RY    RZ  SCL  RMS WRMS |   TOFT  TDRFT    RMS
--------|------------------------------------------------|---------------------
cod  63 |-.01  .03  .00  -.82 -1.16  -.23   .0  .07  .07 |   -6.1    5.7    1.1
emr  28 | .02 -.01  .00   .03  -.96   .16  -.2  .07  .07 |-9374.2   -8.7     .7
esa  47 | .01 -.02 -.03  -.07  -.61   .26  -.2  .12  .12 |    3.5  -49.7    1.0
gfz  47 |-.03 -.02  .00  -.46  -.71  -.08  -.1  .09  .09 |   50.6 -660.3    5.4
jpl  33 | .01  .03  .01  -.71  -.99   .04   .2  .06  .06 |  -53.5    1.2     .8
ngs  42 | .02 -.02  .00  -.32  -.92  -.05  -.2  .09  .08 |  -11.8   17.6  103.6
sio  104|-.01 -.02  .01  -.36  -.07  -.05   .1  .09  .09 |     .0     .0     .0

Table 2.0823.4   GPS week: 0823   Day: 4   MJD: 50009.0

CENT STA|  DX   DY   DZ    RX    RY    RZ  SCL  RMS WRMS |   TOFT  TDRFT    RMS
--------|------------------------------------------------|---------------------
cod  62 |-.01  .03  .01  -.96 -1.74  -.01   .0  .07  .07 |    -.5     .5    1.1
emr  27 | .02 -.02 -.01  -.46 -1.66   .03  -.2  .07  .07 |-9381.8    3.0    1.0
esa  47 | .00  .00 -.02  -.40 -1.46   .07   .0  .15  .14 |  -25.2  -25.9    1.9
gfz  47 |-.03 -.02 -.01  -.75 -1.39   .05  -.1  .09  .09 | -691.1 -369.0   24.3
jpl  34 | .00  .03  .01 -1.02 -1.65   .35   .0  .08  .08 |  -52.6   15.3     .8
ngs  42 | .02 -.02  .00  -.91 -1.59   .03   .0  .12  .12 |    -.4    -.1   75.9
sio  105| .01 -.03  .00  -.72  -.66  -.83   .2  .09  .09 |     .0     .0     .0

Table 2.0823.5   GPS week: 0823   Day: 5   MJD: 50010.0

CENT STA|  DX   DY   DZ    RX    RY    RZ  SCL  RMS WRMS |   TOFT  TDRFT    RMS
--------|------------------------------------------------|---------------------
cod  62 | .00  .03  .01 -1.10 -1.50  -.01  -.1  .07  .07 |   10.7  -22.3     .9
emr  27 | .01 -.02 -.01  -.85 -1.10   .15  -.1  .08  .08 |   34.8   -2.7     .4
esa  47 | .00 -.02 -.02  -.14 -1.06   .21   .0  .13  .12 |   34.9   -4.6     .5
gfz  49 |-.03 -.02  .00  -.88 -1.05  -.26  -.2  .08  .08 |   34.9   -3.1     .5
jpl  34 | .01  .04  .00 -1.25 -1.24   .04   .1  .07  .07 |  -43.6     .2     .4
ngs  43 | .01 -.01  .01 -1.05  -.88  -.10  -.1  .10  .10 |    3.0   -5.4   75.7
sio  100| .00 -.02  .01  -.68  -.57 -1.68   .2  .12  .12 |     .0     .0     .0

Table 2.0823.6   GPS week: 0823   Day: 6   MJD: 50011.0

CENT STA|  DX   DY   DZ    RX    RY    RZ  SCL  RMS WRMS |   TOFT  TDRFT    RMS
--------|------------------------------------------------|---------------------
cod  61 | .01  .03  .00  -.90  -.85  -.23   .0  .07  .07 |   -1.6   14.7    1.0
emr  26 | .01 -.01 -.01  -.43  -.44   .09  -.2  .08  .08 |   42.6    1.0     .4
esa  46 | .00 -.02 -.02   .40  -.26   .05   .0  .13  .12 |  -20.1    1.5     .6
gfz  48 |-.04 -.02  .01  -.56  -.60  -.08  -.2  .09  .08 |   43.1     .8     .5
jpl  34 | .01  .03  .00  -.94  -.37   .11   .2  .07  .07 |   42.9     .7     .4
ngs  44 | .00 -.02  .02  -.72   .14   .09   .0  .10  .10 |    2.6   -6.1   75.4
sio  102| .02  .00  .02  -.31 -1.08 -1.74   .1  .15  .15 |     .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" flags eclipsing satellites.
         Units: cm.

Table 3.0823.0   GPS week: 0823   Day: 0   MJD: 50005.0

               Weighted Average                Orbit Dynamics (7 days)
 PRN  | cod emr esa gfz jpl ngs sio  IGS |  cod emr esa gfz jpl ngs sio  IGS
------|----------------------------------|----------------------------------
   1  |   4   7  11   7   7   7   8    3 |    6  12  12  13   5  13  15    9
   2  |   4   8  15   8   7  10   4    3 |    3  13  12   9   5  14  14    7
   4  |   4   5   8   8   6   4   7    2 |    4  10  12  11   7  14  12    8
   5  |   7   5  14   6   5   9   5    2 |    4   9  10  10   6  12  15    7
   6E |   7   8  14  10   8  13   9    4 |    9  16  21  15   9  17  17   13
   7E |   5   9  15  10   8  10  13    4 |   10  17  15  20  10  20  22   14
   9  |   7   8  13   7   7  11   6    3 |    5  15  12  15   7  15  16    9
  12  |   7   6  18   3   4  11   6    3 |    6  10  16  11   8  15  16    8
  14  |   7   4   9   5   5  11   7    2 |    7   9  12  13  10  19  15    9
  15  |   5   5   6   7   5   8   6    2 |    5   9   7   9   6  17   9    7
  16  |   7  13   8   7   8  13   5    3 |    7  11  10  12   8  18  14    8
  17  |   8   7  13  11   7  18   6    4 |    5  10  12  13   7  16  10    7
  18  |   6   8  10   8   7   9   4    3 |    4  13  14  14   7  14  13    9
  19  |   6  10  14   9   8   9   4    3 |    6  13  14  12   7  11  12    8
  20  |   5   5  14   6   5   9   6    2 |    4  10  10  11   6  15  14    7
  21  |   8   6   9   9   4  12   5    3 |    5   9  12  12   7  14  12    7
  22  |   7   7   7   8   6   9   5    3 |    6  11  10  10   6  13  16    8
  23  |   7   8  12   7   3  15   4    3 |    7  13  11  14   9  14  13    9
  24  |   4   5  16   9   6  14   5    3 |    4  10  11  14   6  20  12    8
  25  |  10   4   9  13   7   9   7    3 |    7  15  15  16   8  18  16   12
  26  |   8   8 232   4   8  14   7    3 |   11  14  73  20   7  19  15   11
  27  |   7   6  22   8   8   9   3    3 |    6  11  13  12   6  11  13    8
  28E |   9   7  11  11   9   9  13    4 |   15  18  17  17  14  20  27   16
  29  |   6   7  13   8   6   8   3    3 |    5  12  15  14   6  15  13    8
  31E |  13   9  15  14   8  14   8    4 |   12  17  15  14   9  24  18   12
------|----------------------------------|----------------------------------
 RMS  |   7   7  48   9   7  11   7      |    7  12  19  13   7  16  15    9
 WRMS |   7   7  13   9   7  11   6      |

Table 3.0823.1   GPS week: 0823   Day: 1   MJD: 50006.0

               Weighted Average                Orbit Dynamics (7 days)
 PRN  | cod emr esa gfz jpl ngs sio  IGS |  cod emr esa gfz jpl ngs sio  IGS
------|----------------------------------|----------------------------------
   1  |   6   6  11   6   6   8   7    3 |    4  13  11  12   5  13  12    8
   2  |   6  10  11   6   6   8   7    3 |    3  12  11   9   6  13  12    7
   4  |   3   6   6   8   7   3   9    2 |    4   8   9  12   4  10   9    6
   5  |   7   7   9   5   4   6   5    2 |    4  10  10  10   5  10  10    7
   6E |   8  10  14  15   9   7  10    4 |   10  17  14  19  12  14  20   13
   7E |   6  10   8  14   8  10  10    4 |    5  12  13  13   4  16  14    9
   9  |   6   8  16   7   5   8   5    3 |    4  12  12  13   5  11  12    8
  12  |   6   5   7   5   4   6   8    2 |    4  10  12  10   7   9  10    6
  14  |   6   4  12   6   7   7   9    3 |    4   9   9   9   6  10  14    6
  15  |   3   7  11   9   4   5   5    2 |    3  11   9   8   5   9   9    6
  16  |   4   9   8  10   6   6   9    3 |    6   9   6  10   8  11   9    6
  17  |   6  12  13   9   7  14   5    4 |    4  11   9  13   5  13   7    4
  18  |   7   9  10   9   7  15   8    3 |    5  11  12  11   4  17  13    7
  19  |  11  11  22  10   8  13   7    4 |    9  14  17  12   6  16  14    8
  20  |   7   7   9   7   5   8   8    3 |    3  12   9  10   6  13  12    7
  21  |   7   6   8   8   5   5   6    2 |    3   6   9  10   4   6   9    4
  22  |   4   5   7   9   7   7   6    2 |    3   9  10  10   4  10  12    6
  23  |   7   9   9   6   5  19   5    4 |    5   9   9  13   5  16   5    5
  24  |   5   8   9  11   5   9   5    3 |    3   9  10  16   5  16  10    7
  25  |   9   5  13  11   9   6   8    3 |    4  14  14  18   6  17  15   11
  26  |   8   6  17   4   9  12   7    3 |    7  12  64  16   6  11  14    8
  27  |   6   6  20   7   8   7   6    3 |    7  11  12  10   6  11  13    8
  28E |   8   9  13  10   7  11   8    3 |   10  15  18  15   7  15  17   11
  29  |   6   8  12   7   6   8   6    3 |    4  14  12  11   4  12  15    7
  31E |  10  12  10  14   8   8   9    4 |    9  18  13  11   5  13  18    9
------|----------------------------------|----------------------------------
 RMS  |   7   8  12   9   7   9   7      |    5  11  17  12   5  12  12    7
 WRMS |   6   8  10   9   7   9   7      |

Table 3.0823.2   GPS week: 0823   Day: 2   MJD: 50007.0

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

Table 3.0823.3   GPS week: 0823   Day: 3   MJD: 50008.0

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

Table 3.0823.4   GPS week: 0823   Day: 4   MJD: 50009.0

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

Table 3.0823.5   GPS week: 0823   Day: 5   MJD: 50010.0

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

Table 3.0823.6   GPS week: 0823   Day: 6   MJD: 50011.0

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

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