Subject: [IGSREPORT-0747] IGS Rapid Orbit Comb(731)
From: Analysis Centres Coordinator / Geodetic Survey of Canada
Date: Thu, 27 Jan 1994 14:20:42 PST

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IGS Electronic Report    Thu Jan 27 14:20:42 PST 1994      Message Number 0747
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Author: Analysis Centres Coordinator / Geodetic Survey of Canada
Subject: IGS Rapid Orbit Comb(731)

Rapid Service IGS Orbit Combination - Week 0731   (Jan 09, 1994 - Jan 15, 1994)

Contacts: F. Lahaye ([email-masked]), J. Kouba ([email-masked])

COMBINATION STRATEGY:

Each centre ephemeris and satellite clock corrections are first transformed to
common reference. The differences between each centre X and Y pole solutions
and the IERS Bull. A are used to rotate the corresponding ephemeris. If the
pole solution is not available for a particular centre, no such rotations are
applied. For each centre, a clock offset and drift, common for all satellites,
are estimated with respect to broadcast clock corrections. These offsets and
drifts are used to align each centre satellite clock corrections to GPS time.
The resulting ephemerides and clock corrections are then combined as weighted
averages computed over all centres. Each centre is given a position weight and
a clock weight. Currently the weights are computed from the RMS fit to the
unweighted average orbit and satellite clocks, after the estimation of a
7-parameter Helmert transformation (in the case of ephemeris) and offsets and
drifts (in the case of clocks). The above estimations are performed using the
L1-norm robust scheme. Each centre ephemeris are also evaluated individually
and independently from the orbit combination by using week long arcs.

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:

 IGS07310-6.SP3  IGS GPS ephemeris files for days 0-6, week 0731 in SP3 format.
 IGS07317.SUM    This summary file.

REMARKS on IGS orbit combination:

1.                    ************* WARNING *************
   Starting with the week 0731, the above satellite clock correction combination
   is put in place. The centres used in the combination are EMR, ESA, GFZ and
   JPL. The other centres are excluded because they provide broadcast clocks
   (COD) or clock corrections are not provided (NGS & SIO). The clock 
   corrections not used are still compared to the combined clocks for
   completeness.

2. ESA satellite clock corrections do not include relativistic corrections
   which explains the large RMS (~ 10 ns) and may have also caused the larger
   than expected RMS (about 2ns) for JPL and EMR (by introducing  small
   periodical errors in the combined clock).

3. For this week, GFZ was not included in the clock combination because the
   SP3 clock corrections provided are a mixture of "exact" and "interpolated"
   values. The current combination software can not select "exact" (computed)
   values only.  This will be corrected for the subsequent weeks.
  
4. On day 3 (Jan 12), JPL and ESA clock are excluded from combination begining
   at 17h00 UTC due to a clock reset at ALGO. From 17h00 until 23h45, the EMR
   solution, properly aligned, is provided here.

5. A satellite state vector reset was modeled for PRN05 on day 3 (Jan 12) at
   0h00 UTC in the long arc process.

ORBIT COMBINATION AND EVALUATION STATISTICS:

Most combination statistics are with respect to the combined orbits and consist
of three parts. The first, Table 1, summarizes all statistics for the week. It
contains means and standard deviations over the week of satellite ephemeris and
clock correction transformation parameters for each centre (table 1.0731.a).
It also displays the computed satellite position sigmas for the combined orbits
(table 1.0731.b). The second part, Table 2, contains the complete ephemeris
and clock correction transformation parameters (includes both the apriori and
a posteriori values) for each centre and each day (tables 2.0731.0-6). The
third and final part, Table 3, contains two types of daily RMS for each
satellite and centre, along with the computed satellite position sigmas for the
combined orbits (tables 3.0731.0-6). The first type of satellite RMS is based
on orbit combination and the second RMS type is a result of the 7-day arc
evaluation of each centre ephemerides.
In all tables, the most important statistic which is meaningful for intra
centre/satellite analysis is labeled WRMS. It is a weighted RMS where
normalized weights are based on accuracy codes given in the SP3 files, and
should not be affected by downweighted/problem satellites when acknowledged by
individual centres in their SP3 file.

Table 1: Week 0731 summary.                       (Jan 09, 1994 - Jan 15, 1994)

Table 1.0731.a   GPS week: 0731   MJD: 49361.0-49367.0

         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  .00  .02  1.03   .21   .19   .0   .12   .10 |    .4    .4  74.5
    |  .01  .01  .01   .53   .46   .08   .0             |   2.3   3.6
emr |  .00  .00  .00  1.80   .42   .12  -.1   .18   .14 |-524.1 -38.2   1.7
    |  .01  .01  .01   .76   .56   .34   .2             |  68.7   6.7
esa |  .01  .00  .00  1.48   .19  -.44   .0   .25   .19 |    .0  -7.8  10.6
    |  .01  .01  .01   .75   .51   .55   .3             |  12.3  16.7
gfz | -.04  .00  .01  1.08  1.67  -.28  -.4   .12   .12 | -93.1 -16.0  50.8
    |  .00  .01  .01   .60   .47   .21   .1             | 177.0   4.4
jpl |  .01  .03 -.01  1.08   .44   .10   .0   .16   .17 | -91.9 -18.2   1.5
    |  .01  .00  .01   .70   .33   .16   .2             | 178.6   4.9
ngs |  .00 -.04 -.02   .57  -.45   .47  1.7   .36   .33 |    .0    .0    .0
    |  .03  .02  .03   .74  1.21   .40   .3             |    .0    .0
sio |  .02 -.04 -.05  2.50   .54   .04   .4   .28   .28 |    .0    .0    .0
    |  .02  .02  .01   .65   .36   .37   .4             |    .0    .0

Table 1.0731.b   GPS week : 0731   MJD: 49361.0-49367.0

         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  |   7   5   5   7   6   6   7 |
   2E |   7   7   6   6   6   6   6 |
   3  |   5   4   4   5   4   5   4 |
   4E |   9   6   8   9  22   6   6 |
   5E |  24  16   7  46   7   8  16 |
   7  |   5   4   5   5   4   5   4 |
   9  |   7   6   5  10   6   6   5 |
  12  |   6   6   5   8   4   4   5 |
  13  |   7   6   5   6   6   6   5 |
  14  |   4   4   5   4   4   6   5 |
  15E |   5   5   5   7   6   7   6 |
  16  |   6   5   5   8   5   6   5 |
  17E |   6   7   6   6   5   5   5 |
  18  |   3   3   4   5   4   4   4 |
  19  |   5   4   4   4   4   4   3 |
  20E |   7   7   7  11   9   6   8 |
  21  |   5   3   6   5   6   6   4 |
  22E |   5   8   6   5   6   6   6 |
  23  |   6   7   8   6   7   8   6 |
  24E |   9   9   6  10   6   7   6 |
  25  |   7   5   5   8   6   6   5 |
  26  |   6   6   6   6   6   5   7 |
  27  |   4   4   4   4   4   4   5 |
  28  |   4   4   4   4   5   4   4 |
  29  |   3   4   5   3   4   5   4 |
  31  |   6   5   4   6   6   5   5 |

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 2.0731.0   GPS week: 0731   Day: 0   MJD: 49361.0

CENT|   DX   DY   DZ    RX    RY    RZ  SCL   RMS  WRMS |  TOFT TDRFT   RMS
----|---------------------------------------------------|------------------
cod |  .00  .00  .02  1.85   .73   .16   .0   .15   .11 |   -.9   -.3  74.1
emr |  .00 -.02 -.01  2.92   .94  -.03  -.1   .13   .12 |-423.4 -40.0   2.5
esa |  .02  .01  .00  2.65   .79  -.79   .1   .24   .18 | -20.4 -26.5  11.1
gfz | -.04  .01  .01  1.81  1.81  -.12  -.4   .13   .13 |-175.4 -18.6  49.7
jpl |  .00  .04  .00  2.14   .81   .09   .0   .15   .15 |-175.2 -18.5   1.6
ngs |  .03 -.03 -.04  1.52   .36   .58  1.4   .32   .30 |    .0    .0    .0
sio |  .04 -.04 -.05  3.37  1.08   .37   .4   .30   .30 |    .0    .0    .0

Table 2.0731.1   GPS week: 0731   Day: 1   MJD: 49362.0

CENT|   DX   DY   DZ    RX    RY    RZ  SCL   RMS  WRMS |  TOFT TDRFT   RMS
----|---------------------------------------------------|------------------
cod |  .00  .00  .01  1.38   .26   .15   .0   .12   .09 |   -.8   -.5  75.6
emr |  .00  .00 -.01  2.25   .53   .12  -.1   .11   .10 |-471.5 -39.0   1.9
esa |  .01  .00 -.01  1.76   .40 -1.36  -.3   .23   .19 |   1.9 -30.7  10.8
gfz | -.03  .00  .03  1.57  1.62  -.52  -.4   .13   .13 |-198.8 -13.4  50.3
jpl |  .00  .04 -.01  1.34   .69   .30   .1   .13   .13 |-196.8 -18.7   1.7
ngs |  .04 -.07 -.02   .68   .68  1.21  1.6   .35   .30 |    .0    .0    .0
sio |  .03 -.03 -.04  2.77   .74   .27   .4   .23   .23 |    .0    .0    .0

Table 2.0731.2   GPS week: 0731   Day: 2   MJD: 49363.0

CENT|   DX   DY   DZ    RX    RY    RZ  SCL   RMS  WRMS |  TOFT TDRFT   RMS
----|---------------------------------------------------|------------------
cod |  .01  .00  .01  1.02   .27   .18   .0   .10   .09 |   1.9  -4.4  74.7
emr |  .00 -.01  .00  1.90  -.15  -.29   .0   .10   .10 |-526.8 -36.1   1.4
esa |  .02 -.01 -.02  1.89  -.07   .01   .0   .19   .17 |  16.2   4.2  10.5
gfz | -.03  .00  .01  1.30  1.23  -.12  -.3   .11   .11 |-216.6 -18.2  52.3
jpl |  .01  .03 -.01  1.26   .19   .28   .1   .13   .13 |-218.8 -15.6   1.4
ngs | -.02 -.05  .01  1.36  -.01   .39  1.4   .39   .35 |    .0    .0    .0
sio |  .03 -.01 -.06  2.64   .50   .44  1.1   .25   .25 |    .0    .0    .0

Table 2.0731.3   GPS week: 0731   Day: 3   MJD: 49364.0

CENT|   DX   DY   DZ    RX    RY    RZ  SCL   RMS  WRMS |  TOFT TDRFT   RMS
----|---------------------------------------------------|------------------
cod |  .03  .01  .01   .67  -.46   .20   .0   .14   .11 |  -2.4   6.6  74.2
emr |  .00  .00  .01   .76  -.40   .64  -.5   .25   .22 |-534.8 -43.9   1.0
esa |  .00  .01  .01   .95  -.51   .05   .6   .39   .22 |   4.8  -3.9  10.6
gfz | -.03  .01  .00   .99  1.08  -.45  -.5   .12   .11 |-235.6 -22.1  48.5
jpl |  .02  .03  .00  1.07   .00  -.06  -.2   .25   .28 |-234.5 -26.3   1.6
ngs |  .01 -.05  .01   .05 -1.46   .36  1.9   .42   .33 |    .0    .0    .0
sio |  .02 -.06 -.05  2.75   .25  -.35   .5   .40   .41 |    .0    .0    .0

Table 2.0731.4   GPS week: 0731   Day: 4   MJD: 49365.0

CENT|   DX   DY   DZ    RX    RY    RZ  SCL   RMS  WRMS |  TOFT TDRFT   RMS
----|---------------------------------------------------|------------------
cod |  .02  .00  .02   .95  -.17   .09   .0   .11   .10 |   4.1    .5  74.2
emr |  .01  .01  .01  1.70   .77   .36   .1   .28   .13 |-574.7 -44.0   1.5
esa |  .01  .00  .02   .96  -.11  -.45   .1   .21   .19 |  -6.0   1.4  10.4
gfz | -.04  .00  .01   .61  1.91  -.44  -.5   .11   .11 | 144.1 -13.2  52.2
jpl |  .01  .03 -.01   .55   .26   .08   .1   .13   .13 | 148.8 -18.8   1.5
ngs | -.04 -.03 -.06  -.26 -2.41   .19  2.0   .35   .34 |    .0    .0    .0
sio |  .02 -.04 -.05  1.89   .06  -.34   .0   .21   .22 |    .0    .0    .0

Table 2.0731.5   GPS week: 0731   Day: 5   MJD: 49366.0

CENT|   DX   DY   DZ    RX    RY    RZ  SCL   RMS  WRMS |  TOFT TDRFT   RMS
----|---------------------------------------------------|------------------
cod |  .00  .00  .03   .32   .63   .34   .0   .11   .11 |    .3    .3  74.3
emr |  .00  .00 -.01  1.26   .86  -.10  -.2   .11   .11 |-613.5 -26.0   1.4
esa |  .02  .01  .01   .68   .67  -.08  -.3   .18   .16 |   3.4   8.7  10.5
gfz | -.03 -.01  .01   .22  2.38  -.04  -.2   .11   .10 | 123.5 -10.2  51.7
jpl |  .01  .03 -.02   .11   .65  -.07   .3   .13   .13 | 125.4 -11.4   1.4
ngs |  .00 -.01  .00   .05   .16   .08  2.1   .33   .33 |    .0    .0    .0
sio | -.01 -.04 -.06  1.59   .62  -.17   .2   .22   .23 |    .0    .0    .0

Table 2.0731.6   GPS week: 0731   Day: 6   MJD: 49367.0

CENT|   DX   DY   DZ    RX    RY    RZ  SCL   RMS  WRMS |  TOFT TDRFT   RMS
----|---------------------------------------------------|------------------
cod |  .01  .00  .02   .31  1.64   .24  -.1   .12   .11 | -10.0  18.4  74.8
emr |  .00 -.01  .00  1.44  1.96   .13  -.1   .14   .11 |-609.9 -23.6   1.7
esa | -.01 -.01  .02   .84  1.37   .24   .0   .22   .19 |  22.2  -1.7  10.6
gfz | -.04  .00  .02   .81  2.92  -.50  -.2   .17   .13 | 108.2 -22.0  52.4
jpl |  .01  .05  .00   .41  1.70   .04   .0   .12   .13 | 108.2 -20.3   2.7
ngs |  .01 -.06  .00   .32   .22   .14   .8   .27   .26 |    .0    .0    .0
sio |  .03 -.04 -.04  1.84  1.55   .02   .6   .17   .17 |    .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 3.0731.0   GPS week: 0731   Day: 0   MJD: 49361.0

               Weighted Average                Orbit Dynamics (7 days)
 PRN  | cod emr esa gfz jpl ngs sio  IGS |  cod emr esa gfz jpl ngs sio  IGS
------|----------------------------------|----------------------------------
   1  |  11  13  17  22  13  35  30    7 |   13  24  16  27  19  24  36    6
   2E |  15  12  21  20  12  20  31    7 |   14  23  22  29  18  26  42   13
   3  |  11  10  21  10  10  32  11    5 |   14  19  20  18  16  17  23   10
   4E |  25   9  14  13  19  59  24    9 |   31  28  27  21  19  44  35   14
   5E |  39  26  74 ---  47  63 106   24 |   64  68  61 ---  54  69 100   56
   7  |  17   7  14   9  10  20  18    5 |   17  24  21  23  14  22  35   10
   9  |  13  17  12  17  14  21  30    7 |   19  26  19  19  17  24  29   12
  12  |  14  21  13  14  10  16  18    6 |   14  28  19  14  13  23  22    9
  13  |  18   8  16  12  17  36  23    7 |   17  19  20  23  22  24  34    9
  14  |   6  10  12   9   8  27  15    4 |   13  19  22  16  13  15  22    7
  15E |   9  11  19   8  11  12  20    5 |   16  20  22  22  17  20  24   13
  16  |  10  17  15  15   9  14  21    6 |   16  23  27  21  17  19  35    8
  17E |  12   8  19  14  10  38  17    6 |   12  21  21  22  14  26  25   13
  18  |   6   5   9   8  10  15  15    3 |   17  23  22  21  24  28  20   18
  19  |   8   8  22  12   9  21  17    5 |   16  25  21  27  18  19  27   10
  20E |  24  15  18   8  19  31  14    7 |   26  33  34  23  18  26  26   16
  21  |   9   9  22   9  11  16  18    5 |   16  18  15  23  22  21  22    6
  22E |  11   8  14  12  11  39  13    5 |   15  28  28  23  16  24  24   10
  23  |  14  16  20   8  13  20  32    6 |   19  32  23  17  18  28  31   12
  24E |  19  12  19  14  16  59  33    9 |   28  34  29  24  21  44  35   15
  25  |  11  14  30  16  11  26  36    7 |   17  21  18  26  14  20  36   10
  26  |   7  11  26  15  10  33  21    6 |   14  26  24  21  18  33  22   10
  27  |   5   7  20  10   9  23  17    4 |   16  22  20  25  20  22  25   10
  28  |   5   8  13   9  10  21  12    4 |   16  24  19  17  19  21  30   11
  29  |   8   7   6   5   9  22  13    3 |   16  21  17  18  22  18  21   14
  31  |   6   7  39  10  10  13  20    6 |   16  21  21  19  19  20  38   11
------|----------------------------------|----------------------------------
 RMS  |  15  12  23  12  15  31  29      |   21  27  24  21  20  28  34
 WRMS |  11  12  18  13  15  29  30      |

Table 3.0731.1   GPS week: 0731   Day: 1   MJD: 49362.0

               Weighted Average                Orbit Dynamics (7 days)
 PRN  | cod emr esa gfz jpl ngs sio  IGS |  cod emr esa gfz jpl ngs sio  IGS
------|----------------------------------|----------------------------------
   1  |   8   9  11  15  15  23  23    5 |    9  17  12  24  13  20  25    7
   2E |  11  11  23  20  12  30  32    7 |   15  24  28  35  18  31  27   14
   3  |   8  11  16   7  10  30  10    4 |   10  15  20  19  14  17  19    8
   4E |  14   8  14  10  11  51  20    6 |   25  22  22  21  20  29  30   16
   5E |  31  21  57 ---  24  43  60   16 |   50  56  64 ---  42  60  74   47
   7  |  10   4  11  12   9  25  10    4 |   13  18  15  23  10  26  24    8
   9  |   9  11  21  14  13  30  26    6 |   17  20  28  16  14  19  27   11
  12  |  12  17  17  15   9  18  23    6 |   13  21  23  13  11  17  29    7
  13  |   9   7  14  12  16  48  25    6 |   13  16  15  20  19  30  29    7
  14  |   5   7  19   4  12  29  12    4 |   10  16  21  14  17  26  23    7
  15E |   8  10  20   7   9  14  21    5 |   14  20  21  19  13  16  18   11
  16  |   6  10  17  12   9  31  14    5 |   14  19  20  21  16  37  26    9
  17E |  15   8  26  19  11  40  20    7 |   13  18  24  26  11  23  22    9
  18  |   7   3  14   5  11  16  14    3 |   17  22  20  24  23  20  21   16
  19  |   6   7  20   9   8  20  17    4 |   13  21  19  24  13  18  26    9
  20E |  18  12  23   7  20  40  13    7 |   20  27  38  21  17  25  22   15
  21  |   4   7  15   6  10  22  11    3 |   13  17  22  16  18  15  21    9
  22E |  11   8  30  21  11  64  20    8 |   15  26  21  27  12  25  31   12
  23  |  16  17  21  13  14  33  33    7 |   18  36  26  21  26  44  42   21
  24E |   8  10  34  23  11  73  24    9 |   23  27  32  23  22  51  28   15
  25  |  10   9  13  12  10  22  25    5 |   17  16  16  18  14  15  31    7
  26  |  10  12  22  15  10  41  12    6 |    9  22  16  18  17  43  24    9
  27  |   6   9  12   9  11  19  17    4 |   13  18  19  22  13  20  23    9
  28  |   5   7  11  11  12  22  16    4 |   14  16  16  16  15  26  27   11
  29  |   5   8  11   5  13  21  14    4 |   15  19  19  24  23  21  23   14
  31  |   5   6  34  13  12  20  14    5 |   12  18  16  17  15  18  25    9
------|----------------------------------|----------------------------------
 RMS  |  11  10  22  13  12  34  22      |   17  23  24  21  18  28  29
 WRMS |   9  10  18  12  13  30  23      |

Table 3.0731.2   GPS week: 0731   Day: 2   MJD: 49363.0

               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  10  18   8  15  44  16    5 |    8  15  11  21  17  36  21    6
   2E |   8  12  15  17  15  30  23    6 |   13  21  23  35  12  39  26   14
   3  |   6   7  11   8  10  37  12    4 |   11  14  15  17  12  26  22    8
   4E |  12  11   8  10   9  80  33    8 |   20  20  17  20  13  63  33   11
   5E |  19  13  28   9  17  27  30    7 |   64  54  51   8  50  49  55   56
   7  |   6   4  22  11   9  41  14    5 |   12  16  16  23  10  42  25    9
   9  |   8   9  20  12  11  25  19    5 |   17  16  27  13  12  37  27   11
  12  |   8  13  19  10   9  26  24    5 |   11  14  21  10  12  27  29    7
  13  |   9   7  12  10  11  40  21    5 |   15  15  16  19  14  41  29    8
  14  |   8   8  12  10  11  39  30    5 |    9  14  20  12  14  38  38   10
  15E |   8   9  21  11  11  23  18    5 |   11  17  28  22  13  23  34   13
  16  |  10   9  19   6   9  51  20    5 |   14  17  17  16  15  47  26    8
  17E |  11   8   8  14  11  43  27    6 |   11  18  18  19  11  36  25    9
  18  |   8   7   9  13   8  26  19    4 |   18  29  31  32  30  27  30   24
  19  |   5   7  13  10  11  37  15    4 |   13  20  16  24  11  30  25    9
  20E |  18   9  31  17  21  28  23    7 |   19  22  36  15  15  27  17   12
  21  |   7   9  31   6  15  36  34    6 |   11  17  22  15  20  32  27    7
  22E |  10  10  24  14  13  33  30    6 |   17  20  18  24   8  21  28   10
  23  |  13  19  22   8  16  56  40    8 |   14  26  17  15  17  50  37    9
  24E |   4  12  17  13  14  42  29    6 |   16  23  28  17  18  25  33   12
  25  |   6  10  10   6  14  57  21    5 |   16  14  21  16  12  48  29    9
  26  |   8  12  29   9  14  30  23    6 |    9  23  15  15  18  27  32    8
  27  |   5   9   8  11  12  38  14    4 |   13  19  18  24  11  29  27   10
  28  |   4   5   6   9  10  23  24    4 |   13  15  15  17   9  19  22   11
  29  |   9   8  15   8   8  26  29    5 |   14  21  29  27  23  26  21   17
  31  |   6   5  17  12  12  26  18    4 |   13  16  20  16  13  24  23   10
------|----------------------------------|----------------------------------
 RMS  |   9  10  18  11  12  39  24      |   18  21  23  19  17  35  29
 WRMS |   8  10  16  11  13  35  24      |

Table 3.0731.3   GPS week: 0731   Day: 3   MJD: 49364.0

               Weighted Average                Orbit Dynamics (7 days)
 PRN  | cod emr esa gfz jpl ngs sio  IGS |  cod emr esa gfz jpl ngs sio  IGS
------|----------------------------------|----------------------------------
   1  |  12  28  15  14  11  22  32    7 |   10  29  11  31  19  22  26   14
   2E |   9  15  18  15  12  18  19    6 |   12  22  17  30  14  24  24   13
   3  |   7  14  21   5  11  32  20    5 |   12  17  18  17  16  30  26   12
   4E |   6  14  28  12  13  75  24    9 |   19  22  37  22  16  70  48   18
   5E |  46  83 153 --- 109 135 165   46 |  201 182 155 --- 236 229 262  196
   7  |   6  19  18  10  10  23  15    5 |   13  23  20  22  15  25  32   12
   9  |  16  16  28  11   9  32  63   10 |   18  16  23  15  12  30  72   11
  12  |  11  17  29  18  12  58  25    8 |   16  25  24  11  14  61  23   11
  13  |  14  23  19   9  13  25  23    6 |   17  28  19  21  14  36  40   14
  14  |   8   8  29   5  12  23   9    4 |   13  11  20  16  15  20  23   11
  15E |   7  26  31  16  12  11  16    7 |   12  20  29  23  17  20  21   15
  16  |  15  19  40   8  13  45  34    8 |   17  20  18  15  15  42  29   10
  17E |   7  11  20  10  18  42  21    6 |   12  19  20  20  13  32  30   13
  18  |  16  18  15   5  12  18  19    5 |   17  25  19  21  21  27  27   16
  19  |   7  13  16   6  10  16  13    4 |   13  23  12  24  15  16  28   13
  20E |  21  19  51  20  17  49  39   11 |   20  30  36  23  11  36  37   16
  21  |  11  14  13   8  11  18  20    5 |   13  15  14  22  17  24  27   10
  22E |   8   9  17   9  10  40  15    5 |   18  20  24  18  11  28  33   14
  23  |  11  20  16   9  14  24  24    6 |   34  38  27  26  34  35  55   30
  24E |  11  49  25  20  19  42  22   10 |   23  62  39  25  20  46  46   24
  25  |   8  27  43  14  15  27  27    8 |   16  32  36  20  13  22  30   12
  26  |   8  15  23   9  12  30  26    6 |    9  16  11  17  16  29  28    9
  27  |   8  14  12   4  10  18  14    4 |   13  23  14  21  14  16  31   13
  28  |   6  10  11   7  12  25   9    4 |   16  12  13  18  14  17  23   12
  29  |   7  11   9   5   8  17  10    3 |   12  18  17  15  18  21  20   11
  31  |   7  15  37  11  11  27  14    6 |   15  15  13  19  14  30  26   12
------|----------------------------------|----------------------------------
 RMS  |  14  25  38  11  24  42  40      |   42  43  37  20  49  55  61
 WRMS |  10  21  21  10  27  33  40      |

Table 3.0731.4   GPS week: 0731   Day: 4   MJD: 49365.0

               Weighted Average                Orbit Dynamics (7 days)
 PRN  | cod emr esa gfz jpl ngs sio  IGS |  cod emr esa gfz jpl ngs sio  IGS
------|----------------------------------|----------------------------------
   1  |  11  12  11  13   8  25  28    6 |   11  13  12  26   9  21  24    7
   2E |  11  15  13  18  11  22  21    6 |   12  23  14  31  10  24  25   10
   3  |   7   6  21   5   9  26  11    4 |   11  17  20  20  14  26  18    9
   4E |  23 132  29  23  21  75  24   22 |   20 182  22  21  13  49  23   26
   5E |  12  12  34   8  12  36  34    7 |   97  86  95  32 101 108  98   93
   7  |   8  10  15   9   9  26  11    4 |   14  19  13  27  12  22  16   11
   9  |   6  16   9  10  12  50  19    6 |   15  22  22  18  11  61  27   13
  12  |   7  10  19   8   7  28  16    4 |   11  19  14  14  11  37  16    8
  13  |  13  16  24   6   9  34  25    6 |   14  20  15  20  12  25  26    9
  14  |   9  10  17   5  12  19  16    4 |   13  15  26  14  15  31  17    9
  15E |   8  16  12  12  17  25  19    6 |   13  21  30  18  10  40  18   12
  16  |  15  12  11  11  12  32  10    5 |   16  18  14  17  14  31  22    9
  17E |  13  11  13  13  13  29  12    5 |   10  20  16  23  12  25  20    9
  18  |   8   7  17   7   9  21  13    4 |   16  21  26  20  19  27  14   16
  19  |   7   8  13  10  10  19  17    4 |   11  21  16  24  10  19  24    9
  20E |  12  10  41  13  23  37  31    9 |   13  20  26  21  18  27  25   12
  21  |   7  11  20   5  11  39  26    6 |   12  15  16  17  16  43  18    8
  22E |  14   6  19  12  10  44  15    6 |   17  20  17  23   8  35  21   11
  23  |  12  19  21   7  14  42  34    7 |   14  43  17  29  31  48  28   20
  24E |   4  12  17  14  10  48  16    6 |   18  23  24  24  17  37  30   13
  25  |  12  12  12  10   8  29  34    6 |   14  19  16  23  11  30  30   10
  26  |  13  19  21  14  12  40  12    6 |   12  29  13  15  17  33  20   10
  27  |   5  12   5   8   8  26  21    4 |   11  20  14  21   9  19  32    9
  28  |   7   9  12   8  10  42  23    5 |   13  17  12  19  10  28  28   10
  29  |   7  10  17   7   8  28  11    4 |   11  19  13  14  15  24  16    9
  31  |   5   9  42   8  15  24  13    6 |   11  17  15  20  12  28  16    9
------|----------------------------------|----------------------------------
 RMS  |  11  28  20  11  12  35  21      |   23  44  25  21  24  38  29
 WRMS |   9  12  19  11  13  33  21      |

Table 3.0731.5   GPS week: 0731   Day: 5   MJD: 49366.0

               Weighted Average                Orbit Dynamics (7 days)
 PRN  | cod emr esa gfz jpl ngs sio  IGS |  cod emr esa gfz jpl ngs sio  IGS
------|----------------------------------|----------------------------------
   1  |  10   7  13  14  12  38  35    6 |   10  13  10  28  10  33  33    6
   2E |  15  13  17  18  12  19  14    6 |   16  23  17  36  14  20  31   15
   3  |   6  11  16   5   9  41   8    5 |    8  16  18  17  11  27  17    7
   4E |  10   9  19   6  11  44  21    6 |   19  19  20  23  10  47  24   12
   5E |   9  11  30  24  18  23  33    8 |   63  50  82  38  57  56  61   54
   7  |  14   6  12   9   8  25  16    5 |   12  16  16  25  10  28  24    9
   9  |   8  13  14  12  15  40  18    6 |   15  20  22  17  13  45  18   11
  12  |   8  11  14  10   8  22  13    4 |    9  20  21  14  12  30  14    8
  13  |  10   9  18   8  13  32  32    6 |   12  15  21  21  13  26  35    8
  14  |   9   9  21  10  10  42  19    6 |   10  14  24  19  15  26  15   10
  15E |  19  11  29  12  11  45  19    7 |   11  17  25  32  12  29  20   13
  16  |  16  16  14   8  13  36  15    6 |   15  19  17  21  13  27  19    9
  17E |   8  12  12   9  13  36  15    5 |    9  18  14  23  10  20  18    8
  18  |   9   6  10   8   9  22  23    4 |   13  12  13  15  12  24  20    9
  19  |   4   8  16  10  10  25  14    4 |   10  19  11  22   9  16  19    8
  20E |  11   8  21  17  17  32  17    6 |   15  23  26  20   9  27  19   14
  21  |  12  10  12  10  14  29  25    6 |   11  17   9  23  20  16  20    9
  22E |  15  11   9  14  12  40  22    6 |   15  20  20  27   7  21  18   10
  23  |  17  17  15  12  16  37  36    8 |   32  30  31  31  31  40  45   28
  24E |   7  14  25  12  12  51  25    7 |   18  24  28  23  17  40  32   15
  25  |  10  10  13   6  12  31  33    6 |   13  21  14  25  13  33  24   10
  26  |  11  12  16  10  11  27  15    5 |   10  17  16  15  11  23  19    6
  27  |   8   5  11   8   7  29  11    4 |   10  17   9  20   9  19  24    9
  28  |   9   7  14   6  12  22  20    4 |   15  12  13  20  10  19  25    9
  29  |  10  12  18   6  10  20  23    5 |   10  14  12  16  11  17  17    7
  31  |   5   6  29   6  13  22  24    5 |   13  14  17  23  10  20  19    9
------|----------------------------------|----------------------------------
 RMS  |  11  10  18  11  12  33  22      |   18  20  24  23  17  29  26
 WRMS |  11  11  16  10  13  32  22      |

Table 3.0731.6   GPS week: 0731   Day: 6   MJD: 49367.0

               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  14  14  13  11  46  26    7 |   12  15  12  24  14  42  29    9
   2E |  14  13   5  21  14  31  14    6 |   17  31  27  43  16  22  35   17
   3  |   5   7  10   7  10  31   9    4 |   13  20  15  21  18  27  21   12
   4E |  11   5  16  19  11  34  13    6 |   26  30  21  23  22  26  29   14
   5E |  19  55  69  50  26  36  18   16 |   80  76  65  37  85  70  70   79
   7  |  13   6  11  10   8  22  16    4 |   17  22  17  30  17  22  26   10
   9  |  15   9  17  13  11  19  12    5 |   18  22  19  21  15  21  15   11
  12  |  12  10  18   9   7  15  17    5 |   14  20  17  19  16  16  13    8
  13  |  12  10  20   7  17  18  15    5 |   15  20  18  25  18  15  25    9
  14  |   8   7  19   9   8  29  15    5 |   15  15  17  21  16  32  18   10
  15E |   8   8  11  27  11  27  18    6 |   15  21  23  22  16  22  28   12
  16  |  11   8  29  13  11  14  12    5 |   19  24  19  25  17  23  25   12
  17E |  12  11   9  10  11  30   9    5 |   13  21  16  24  18  26  22   13
  18  |   9   5  12   7   5  24  13    4 |   17  19  18  21  17  34  22   14
  19  |   5   6  10   8   9  16  14    3 |   13  24  17  26  15  15  24   11
  20E |  16  12  27  29  17  25  19    8 |   15  20  26  26  12  20  20   14
  21  |  12   7  14   5  10  26  13    4 |   13  18  16  22  19  22  17    8
  22E |  17   7  14  19   8  37  16    6 |   19  25  23  32  15  18  26   11
  23  |  16  12  27  11  10  24  20    6 |   20  28  23  24  24  26  27   21
  24E |   9  10  16  18  13  28  19    6 |   29  30  28  32  31  37  39   23
  25  |  10   8  11  13  11  20  20    5 |   18  27  17  29  18  20  23   10
  26  |  14  13  28  15  12  31  21    7 |   15  21  17  20  19  20  20    9
  27  |  12   8   8  12   9  19  18    5 |   13  24  19  26  16  16  27   12
  28  |   7   5  19   8  12  14  14    4 |   19  18  15  24  14  24  29   10
  29  |   8  10  10   9   3  22  15    4 |   14  17  16  22  14  22  20   10
  31  |   5   5  28   9  10  19  19    5 |   17  19  17  25  12  22  19   10
------|----------------------------------|----------------------------------
 RMS  |  11  14  22  17  12  26  16      |   22  26  22  26  23  27  27