[IGSREPORT-0711] IGS Orbit Combination (w. 723)

Analysis Analysis
Mon Jan 17 14:04:35 PST 1994


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IGS Electronic Report    Mon Jan 17 14:04:35 PST 1994      Message Number 0711
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Author: Analysis Centres Coordinator / Geodetic Survey of Canada
Subject: IGS Orbit Combination (w. 723)

IGS orbit combination for GPS week 0723            (Nov 14, 1993 - Nov 20, 1993)

Contacts: F. Lahaye (lahaye at geod.emr.ca), J. Kouba (kouba at geod.emr.ca)


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

  IGS07230-6.SP3  IGS GPS ephemeris files for days 0-6, week 0723 in SP3 format.
  IGS07237.SUM    This summary file.


REMARKS on IGS's ephemeris:

1. Currently the clock combination is an unweighted mean of all centre
   solutions. The IGS satellite clock solutions for this week will be updated
   using the scheme described above once it is fully implemented and tested.


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 1.0723.a).
It also displays the computed satellite position sigmas for the combined orbits
(table 1.0723.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 2.0723.0-6). 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 3.0723.0-6). 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 0723 summary.                        (Nov 14, 1993 - Nov 20, 1993)

Table 1.0723.a   GPS week: 0723   MJD: 49305.0-49311.0

         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  .03  1.09  1.20   .55  -.3   .26   .17 |    .0    .0 701.5
    |  .01  .01  .02   .27   .25   .27   .2             |    .0    .0
emr |  .00 -.01  .00   .73  1.49  -.44  -.6   .23   .22 |    .0    .0 327.4
    |  .01  .01  .01   .14   .25   .17   .2             |    .0    .0
esa |  .02 -.02 -.01   .82  1.37  -.01  -.3   .29   .18 |    .0    .0    .0
    |  .01  .01  .01   .14   .21   .58   .3             |    .0    .0
gfz | -.04 -.01  .03   .78  1.45  -.31   .9   .14   .14 |    .0    .0 314.5
    |  .01  .01  .01   .11   .27   .24   .1             |    .0    .0
jpl |  .01  .04  .01   .83  1.21   .33   .0   .21   .16 |    .0    .0 308.8
    |  .01  .01  .01   .22   .12   .15   .3             |    .0    .0
ngs |  .02 -.05 -.01  1.93   .54  -.41 -2.4   .71   .72 |    .0    .0    .0
    |  .03  .04  .02   .57   .49   .61   .5             |    .0    .0
sio |  .01  .00 -.10   .56  1.71   .09  1.4   .38   .38 |    .0    .0    .0
    |  .02  .02  .01   .54   .82   .12   .4             |    .0    .0

Table 1.0723.b   GPS week : 0723   MJD: 49305.0-49311.0

         Satellite position sigmas for the combined orbits
         (coded in the IGS SP3 orbit files).
         Units: cm.

              Day of GPS week
 PRN |   0   1   2   3   4   5   6 |  Remarks
-----|-----------------------------|------------------------------------------
   1 |   8   5   6   6   8   6   5 |
   2 |   6   6   7   6   6   6   6 |
   3 |   7   8   7   8   5   5  11 |
   4 | --- --- --- ---   0   0   0 | New sat. not yet operational (AS on Day 6)
   5 |   8   7   7   7   6   7   9 |
   7 |   9   8   9   7  10   6   8 |
   9 |   8   6   9   8  28   7  11 |
  12 |   6   7   7   6   8   6   6 |
  13 |  16  35  88  20  60  20  25 | Less than 50% of data the whole week
  14 |   6   7   5   5   7   6   7 |
  15 |   6   5   5   6   9   8   7 |
  16 |   7   8   7   7   7   7   6 |
  17 |   6   6   6   6   9   6   6 |
  18 |   6   7   8   7   6   7   6 |
  19 |   7   7   7   6   6   7   9 |
  20 |   7   6   7   6   6   5   6 |
  21 |   6   6   5   5   6   5   4 |
  22 |   7   7   7   8   7   7   6 |
  23 |   7   8   7   8   8   7   7 |
  24 |  11  10   9   9  14  11   8 |
  25 |   6   6   6   6   9   6   6 |
  26 |   7   6   6   6   6   6   9 |
  27 |   7   6   7   6   7   7   8 |
  28 |   7   6   8   7   8   6   6 |
  29 |   6   5   6   5   6   5   5 |
  31 |   6   5   6   7   7   8   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 2.0723.0   GPS week: 0723   Day: 0   MJD: 49305.0

CENT|   DX   DY   DZ    RX    RY    RZ  SCL   RMS  WRMS |  TOFT TDRFT   RMS
----|---------------------------------------------------|------------------
cod |  .01 -.02  .05  1.54   .85   .23  -.1   .20   .17 |    .0    .0 698.3
emr | -.01 -.01  .01   .62  1.71  -.53  -.8   .17   .17 |    .0    .0 247.2
esa |  .03 -.02 -.02   .68  1.31   .46   .1   .22   .21 |    .0    .0    .0
gfz | -.02 -.02  .02   .74  1.89  -.10   .9   .12   .12 |    .0    .0 240.4
jpl |  .01  .04  .00  1.03  1.30   .34  -.2   .12   .12 |    .0    .0 248.0
ngs | -.02 -.03 -.02  1.80   .04  -.85 -2.6   .39   .39 |    .0    .0    .0
sio |  .03 -.02 -.10  1.08   .06   .04  1.6   .30   .30 |    .0    .0    .0

Table 2.0723.1   GPS week: 0723   Day: 1   MJD: 49306.0

CENT|   DX   DY   DZ    RX    RY    RZ  SCL   RMS  WRMS |  TOFT TDRFT   RMS
----|---------------------------------------------------|------------------
cod |  .01 -.01  .04  1.11  1.07   .83  -.4   .25   .18 |    .0    .0 715.1
emr |  .00 -.02  .00   .74  1.46  -.35  -.5   .16   .16 |    .0    .0 254.6
esa |  .02 -.01  .00   .87  1.48  -.47  -.2   .22   .16 |    .0    .0    .0
gfz | -.04 -.01  .03   .61  1.46  -.08   .9   .13   .13 |    .0    .0 245.1
jpl |  .02  .02  .00  1.09  1.06   .40  -.2   .13   .13 |    .0    .0 254.6
ngs |  .05 -.05 -.04  2.08   .05  -.52 -2.7   .62   .63 |    .0    .0    .0
sio |  .00 -.01 -.11  1.26  1.95  -.06  1.7   .34   .34 |    .0    .0    .0

Table 2.0723.2   GPS week: 0723   Day: 2   MJD: 49307.0

CENT|   DX   DY   DZ    RX    RY    RZ  SCL   RMS  WRMS |  TOFT TDRFT   RMS
----|---------------------------------------------------|------------------
cod |  .01  .01  .02  1.09  1.15   .22  -.5   .24   .17 |    .0    .0 735.8
emr |  .01 -.01  .00   .63  1.34  -.19  -.9   .35   .35 |    .0    .0 265.5
esa |  .01 -.02 -.02   .76  1.71  -.75  -.8   .55   .20 |    .0    .0    .0
gfz | -.03 -.01  .03   .86  1.25  -.33   .8   .14   .14 |    .0    .0 253.3
jpl |  .02  .04  .02   .78  1.08   .53   .2   .41   .24 |    .0    .0 265.8
ngs |  .05  .01 -.03   .93  1.17   .56 -2.0   .63   .64 |    .0    .0    .0
sio |  .01 -.02 -.09   .60  2.25   .10  1.6   .64   .64 |    .0    .0    .0

Table 2.0723.3   GPS week: 0723   Day: 3   MJD: 49308.0

CENT|   DX   DY   DZ    RX    RY    RZ  SCL   RMS  WRMS |  TOFT TDRFT   RMS
----|---------------------------------------------------|------------------
cod |  .02  .00  .01  1.02  1.48   .79  -.2   .16   .16 |    .0    .0 748.8
emr |  .00 -.01  .01   .61  1.34  -.37  -.5   .15   .15 |    .0    .0 270.4
esa |  .03 -.01  .00  1.06  1.41   .34  -.2   .16   .13 |    .0    .0    .0
gfz | -.04  .00  .02   .83  1.47  -.63   .7   .14   .14 |    .0    .0 259.0
jpl |  .01  .04  .02   .86  1.29   .29  -.2   .13   .13 |    .0    .0 272.0
ngs |  .02 -.10  .00  2.38  1.02 -1.20 -1.9   .57   .57 |    .0    .0    .0
sio | -.01 -.01 -.12   .38  1.92   .23  1.6   .29   .29 |    .0    .0    .0

Table 2.0723.4   GPS week: 0723   Day: 4   MJD: 49309.0

CENT|   DX   DY   DZ    RX    RY    RZ  SCL   RMS  WRMS |  TOFT TDRFT   RMS
----|---------------------------------------------------|------------------
cod |  .02 -.01  .02   .71  1.51   .69  -.3   .43   .20 |    .0    .0 759.3
emr | -.01 -.02 -.01   .87  1.20  -.55  -.5   .32   .28 |    .0    .0 274.1
esa |  .01  .00  .01   .70  1.14  -.33  -.4   .19   .18 |    .0    .0    .0
gfz | -.04  .00  .02   .70  1.53  -.15   .8   .15   .15 |    .0    .0 266.7
jpl |  .01  .04  .02   .71  1.18   .38   .1   .16   .15 |    .0    .0 287.2
ngs |  .03 -.10  .02  2.56   .64  -.11 -3.2  1.29  1.30 |    .0    .0    .0
sio |  .01  .03 -.08  -.20  2.03   .22  1.0   .28   .29 |    .0    .0    .0

Table 2.0723.5   GPS week: 0723   Day: 5   MJD: 49310.0

CENT|   DX   DY   DZ    RX    RY    RZ  SCL   RMS  WRMS |  TOFT TDRFT   RMS
----|---------------------------------------------------|------------------
cod |  .01  .00  .02  1.05  1.12   .52  -.5   .18   .15 |    .0    .0 524.2
emr |  .02  .01 -.02   .93  1.86  -.65  -.6   .16   .15 |    .0    .0 546.2
esa |  .02 -.03  .00   .87  1.18   .70  -.3   .18   .18 |    .0    .0    .0
gfz | -.04 -.01  .03   .92  1.11  -.55  1.1   .13   .13 |    .0    .0 522.6
jpl |  .00  .05  .02   .50  1.34   .07   .4   .15   .14 |    .0    .0 467.5
ngs |  .01 -.05  .00  1.84   .31  -.31 -2.0   .36   .37 |    .0    .0    .0
sio |  .03  .03 -.10   .25  2.06   .01   .8   .30   .30 |    .0    .0    .0

Table 2.0723.6   GPS week: 0723   Day: 6   MJD: 49311.0

CENT|   DX   DY   DZ    RX    RY    RZ  SCL   RMS  WRMS |  TOFT TDRFT   RMS
----|---------------------------------------------------|------------------
cod |  .01  .01  .03  1.35   .46   .47  -.5   .17   .15 |    .0    .0 802.6
emr | -.01 -.01  .00   .94   .85 -1.11 -1.0   .24   .22 |    .0    .0 288.8
esa |  .01 -.01 -.02   .92   .89  -.06  -.2   .16   .15 |    .0    .0    .0
gfz | -.03 -.01  .01  1.31   .66  -.31  1.0   .16   .16 |    .0    .0 281.4
jpl |  .02  .04  .00   .90   .48   .21   .2   .14   .14 |    .0    .0 290.0
ngs |  .02 -.02 -.02  2.27  1.01   .02 -2.5   .45   .45 |    .0    .0    .0
sio |  .01 -.02 -.10   .50  1.83   .31  1.1   .40   .40 |    .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.
         Units: cm.

Table 3.0723.0   GPS week: 0723   Day: 0   MJD: 49305.0

               Weighted Average                Orbit Dynamics (7 days)
 PRN  | cod emr esa gfz jpl ngs sio  IGS |  cod emr esa gfz jpl ngs sio  IGS
------|----------------------------------|----------------------------------
   1  |  24  14  20   6  10  56  30    8 |   20  20  20  23  15  37  29   11
   2  |  14  14  19  10  11  25  24    6 |   14  20  13  21  14  29  20    9
   3E |  16  16  20  12  13  39  22    7 |   28  29  29  23  29  34  26   20
   5  |  13  10  32  10  12  22  47    8 |   20  15  17  19  15  26  28   12
   7E |  16  13  28  17  14  70  29    9 |   18  23  20  23  17  37  23   11
   9E |  32  10  18   8  17  46  22    8 |   29  22  25  19  13  26  25   15
  12  |   7   7  15  17   8  44  21    6 |   15  19  13  18  18  29  13   10
  13E |  47  42  40 ---  23  30  31   16 |  295 243 297 --- 277 297 297  275
  14  |   7  16  13   9   8  33  37    6 |   12  17  15  13  14  21  35    8
  15  |  12  11  13  11  10  36  31    6 |   12  18  15  13  13  38  21    9
  16  |  12  18  21   8  10  36  39    7 |   13  18  14  18  19  28  38    8
  17  |  10  18  15  13  10  38  20    6 |   13  19  14  16  17  21  20    6
  18  |  20  14  14  11   9  28  28    6 |   14  22  15  14  13  33  27   10
  19E |  26  12  15  15   8  27  23    7 |   18  23  14  22  14  26  24   13
  20  |  31  11  17   8  14  29  25    7 |   24  18  17  16  19  20  17    9
  21  |   7  14  25  15   6  38  15    6 |   13  16  13  21  12  30  17    9
  22  |   9  15  22  16  11  48  25    7 |   17  19  19  23  18  43  29   11
  23  |  11  19  13   9   9  37  39    7 |   15  28  15  18  16  39  42   13
  24  |  20  18  38  11  13  53  55   11 |   13  21  15  14  16  53  42    9
  25E |  10  13  20   7  12  39  22    6 |   25  27  22  28  14  25  21   14
  26  |  15  13  22   7  12  52  22    7 |   19  20  23  17  13  46  22    9
  27E |  25  16  19   7  13  23  21    7 |   18  23  21  18  15  23  28   14
  28E |  11  17  15  22  14  22  16    7 |   14  24  21  25  15  20  24   14
  29  |  16  10  19   5  10  30  34    6 |   16  21  14  17  14  35  32   10
  31E |  13  17  24  16  12  13  18    6 |   16  24  25  19  14  14  25   13
------|----------------------------------|----------------------------------
 RMS  |  19  16  22  12  12  38  29      |   61  52  62  19  57  67  65
 WRMS |  16  17  20  12  12  39  29      |

Table 3.0723.1   GPS week: 0723   Day: 1   MJD: 49306.0

               Weighted Average                Orbit Dynamics (7 days)
 PRN  | cod emr esa gfz jpl ngs sio  IGS |  cod emr esa gfz jpl ngs sio  IGS
------|----------------------------------|----------------------------------
   1  |  13  16   9   7   9  27  24    5 |   20  21  21  21  12  34  36   11
   2  |  23  13   8  14   9  35  25    6 |   14  19  17  19  13  36  19    7
   3E |  20  11  17   8  16  58  43    8 |   39  47  41  41  43  78  57   42
   5  |  13  11  17   6  11  35  48    7 |   21  15  25  18  17  27  34   12
   7E |  12  13  23  19  13  53  27    8 |   26  19  24  22  17  56  28   11
   9E |  19   6  12  13  16  43  17    6 |   38  22  22  19  12  41  21   15
  12  |  11   9  25  16   8  52  16    7 |   14  19  15  13  15  50  18   10
  13E | 101  38  66 ---  26 251  62   35 |  319 261 290 --- 279 415 320  286
  14  |   9  11  24   9   9  39  43    7 |    9  12  20  10  13  23  35    7
  15  |  12  13  13  12  11  29  22    5 |   17  28  22  12  21  29  22   11
  16  |  15  23  29   6  13  31  40    8 |   11  28  13  19  18  30  39    9
  17  |   9  11  15  12   8  48  21    6 |   13  13  21  11  13  26  15    6
  18  |  27  12  18  13  13  31  34    7 |   14  16  24  14  12  33  31   11
  19E |  17  14  19  19   9  30  26    7 |   14  23  15  26  14  21  18   10
  20  |   9  12  15  13  12  28  33    6 |   18  14  25  18  17  25  27    9
  21  |   5  11  14  20  10  33  20    6 |   10  13  13  21  11  21  16    6
  22  |  14  17  18  17  10  41  29    7 |   15  17  30  25  18  21  30   10
  23  |  11  24  11  12   6  36  47    8 |   10  26  17  17  10  37  44   10
  24  |  21   9  24  10  15  53  63   10 |   13  18  17  13  18  50  39    8
  25E |  15  14  13   9  10  40  21    6 |   17  28  20  28  15  37  27   13
  26  |  13  17  21  11  14  20  21    6 |   19  28  24  19  12  34  29   11
  27E |  18  18   9  13  11  22  17    6 |   15  24  17  20  15  32  21   12
  28E |  12  11  12  13  15  34  22    6 |   12  21  24  19  15  39  30   12
  29  |  14  11  13   8  10  32  30    5 |   15  19  15  18  15  31  36   10
  31E |  12  10  16  11  16  24  20    5 |   15  23  19  18  18  21  32   10
------|----------------------------------|----------------------------------
 RMS  |  25  15  21  12  12  61  33      |   66  56  61  20  58  90  70
 WRMS |  17  16  16  13  12  62  33      |

Table 3.0723.2   GPS week: 0723   Day: 2   MJD: 49307.0

               Weighted Average                Orbit Dynamics (7 days)
 PRN  | cod emr esa gfz jpl ngs sio  IGS |  cod emr esa gfz jpl ngs sio  IGS
------|----------------------------------|----------------------------------
   1  |  20  14  11  12  13  35  21    6 |   23  20  23  27  11  31  37   15
   2  |  19  14  19  16  13  41  22    7 |   14  16  18  23  14  40  21   10
   3E |  16  13  15   7  14  54  19    7 |   35  38  32  36  34  60  43   32
   5  |  15   8  17  14  14  23  41    7 |   21  15  21  14  13  24  29    9
   7E |  10  10  26  14  19  74  16    9 |   19  26  26  28  19  74  33   18
   9E |  26  11  32  21  13  44  26    9 |   23  24  37  25  11  33  30   15
  12  |  10  12  25  22  10  36  21    7 |   16  19  17  16  16  38  18    9
  13E |  96 160 261 --- 197 260 286   88 |  519 437 579 --- 497 532 521  474
  14  |   7  12  15   8   8  23  35    5 |   13  11  14  15  11  21  34    6
  15  |  12  14  15  12  13  23  22    5 |   20  27  24  12  18  27  17    9
  16  |  17  13  17  16  11  29  39    7 |   15  18  19  21  17  27  33   10
  17  |  14  13   8  11  11  36  27    6 |   17  15  17  12  19  35  18    6
  18  |  23  20  20  14  11  42  27    8 |   16  25  22  12  13  24  32    9
  19E |  20  17  17  13  12  34  27    7 |   17  24  23  27  13  21  17   11
  20  |  12  11  10  13  14  35  35    7 |   20  18  18  15  17  31  29    8
  21  |  11  11  13  11   9  26  12    5 |   13  14  20  17  16  21  17    8
  22  |  12  11  28   9  12  40  26    7 |   17  17  25  21  18  44  30   10
  23  |   9  20  23  11  10  17  46    7 |   15  25  23  19  18  18  41   11
  24  |  15  12  22  11  18  45  60    9 |   18  17  19  14  17  38  39    7
  25E |  11  15  19  11  13  30  22    6 |   20  27  25  28  12  29  21   13
  26  |  12  13  15   9  16  44  19    6 |   23  18  25  19  19  52  32   12
  27E |  18  17  14  14  19  33  21    7 |   17  26  24  28  16  24  19   14
  28E |  10  12  26  24  18  38  24    8 |   14  19  25  23  16  34  32   13
  29  |  16  14  10   7  12  26  30    6 |   17  22  16  21  14  21  38   12
  31E |  14  13  15  16  17  28  21    6 |   16  24  20  15  19  27  35   11
------|----------------------------------|----------------------------------
 RMS  |  24  34  55  14  41  63  63      |  105  89 117  21 100 111 108
 WRMS |  16  35  19  14  24  64  64      |

Table 3.0723.3   GPS week: 0723   Day: 3   MJD: 49308.0

               Weighted Average                Orbit Dynamics (7 days)
 PRN  | cod emr esa gfz jpl ngs sio  IGS |  cod emr esa gfz jpl ngs sio  IGS
------|----------------------------------|----------------------------------
   1  |  14  15  15  10   9  29  24    6 |   20  22  19  23  14  42  36   12
   2  |  20  16  16  12   8  34  24    6 |   15  17  20  21  13  26  17    8
   3E |  21  17  10   9  19  71  19    8 |   27  38  33  27  38  59  34   27
   5  |   7   7  16  10  15  33  38    7 |   23  16  29  17  16  24  28   13
   7E |  17  11  20  20  11  43  21    7 |   21  24  21  21  19  32  28   11
   9E |  13  10  20   8  13  93  18    8 |   51  29  40  24  15  52  29   17
  12  |   8  14  13   8   8  60  13    6 |   16  23  28  16  18  44  18   10
  13E |  29  23  25 ---  24 184  40   20 |  246 212 299 --- 214 212 231  230
  14  |   5   6   9   7  11  40  32    5 |   14  12  14  13  15  29  34    7
  15  |   8  23   9  12  10  33  28    6 |   22  40  15  14  23  37  23   13
  16  |  11  16  11   6  12  37  38    7 |   14  19  23  14  20  42  44    9
  17  |   9  13   9  12  13  48  22    6 |   16  21  17  18  19  22  17    7
  18  |  21  21  14  12   7  31  30    7 |   15  21  20  21  15  21  33   10
  19E |  21  14  13  15   9  34  23    6 |   16  20  25  26  14  23  16    9
  20  |   9  16  13  13  12  32  30    6 |   17  19  20  16  15  33  26    9
  21  |   8   3  12  16   8  32  20    5 |   13  15  16  20  16  23  23    8
  22  |  17  14  29   9  12  37  30    8 |   15  19  30  21  16  29  29   11
  23  |  10  27  10  12   9  38  45    8 |   15  33  14  20  19  42  42   13
  24  |  18  15  16  12  18  54  49    9 |   16  17  15  14  15  42  35    8
  25E |  19   8  15  17  12  25  20    6 |   18  28  25  36  13  40  24   14
  26  |  13  13  17   7  11  54  24    6 |   19  20  25  17  15  63  34   10
  27E |  16  16  12  13  11  26  20    6 |   16  26  25  22  15  23  22   11
  28E |  11  13  13  25  13  47  26    7 |   16  25  26  22  15  43  33   15
  29  |  15   8  13   9   8  28  23    5 |   14  20  16  23  14  32  31   11
  31E |  14  16  16  22  13  40  22    7 |   16  25  26  26  16  34  34   13
------|----------------------------------|----------------------------------
 RMS  |  15  15  15  13  12  56  28      |   52  48  64  21  46  56  54
 WRMS |  15  15  13  13  12  57  29      |

Table 3.0723.4   GPS week: 0723   Day: 4   MJD: 49309.0

               Weighted Average                Orbit Dynamics (7 days)
 PRN  | cod emr esa gfz jpl ngs sio  IGS |  cod emr esa gfz jpl ngs sio  IGS
------|----------------------------------|----------------------------------
   1  |  18  31  20  14  12  32  25    8 |   18  28  27  24  14  47  34   14
   2  |  22  20   8  12  11  21  19    6 |   14  21  19  21  14  25  20    8
   3E |  15  15  10   6   8  34  16    5 |   40  55  42  33  37  58  52   41
   4  | --- --- --- --- --- ---   6    0 |  --- --- --- --- --- --- ---  248
   5  |   8  11  15  10  11  19  30    6 |   20  17  23  16  14  25  35   13
   7E |  19  25  32  21  12  66  30   10 |   25  24  27  29  17  62  25   16
   9E | 187  33  24  37  32  42  17   28 |  158  32  31  22  13  41  22   23
  12  |   9  21  40  16   9  30  13    8 |   17  30  30  14  15  37  25   12
  13E |  78 101  27 ---  40 614  48   60 |  192 148 165 --- 135 626 180  160
  14  |   9  17  14   7  11  38  35    7 |   11  16  18  11  11  26  29    7
  15  |   9  48  20  11  10  55  19    9 |   17  35  14  10  13  53  19    8
  16  |  12  20  13   9  14  30  29    7 |   13  36  12  19  19  35  35   12
  17  |  13  46  13  11  11  55  29    9 |   16  44  15  14  19  23  17    7
  18  |  20  18   8   9  10  30  23    6 |   14  21  16  10  13  39  29    8
  19E |  15  15  13  12  12  33  17    6 |   14  31  21  29  15  26  19   13
  20  |  11  15  16  11  11  38  21    6 |   19  18  23  12  13  32  26    8
  21  |  10  18   8  18   7  30  18    6 |   13  20  13  17  11  24  17    8
  22  |  18  12  14  12  10  49  26    7 |   18  24  30  19  18  36  27   12
  23  |   6  28   8  13   9  28  47    8 |   12  22  15  17  12  31  40    8
  24  |  14  22  21   8  21 115  65   14 |   15  20  21  18  19  89  36    8
  25E |  21  31  27  17  15  43  27    9 |   19  45  28  37  16  46  20   18
  26  |  16  21  13   9  15  17  18    6 |   19  36  18  18  16  33  29   11
  27E |  15  30  10  14  18  48  18    7 |   16  39  21  32  17  22  24   16
  28E |  11  25  25  19  20  33  22    8 |   13  29  22  17  18  24  30   13
  29  |  19  11  18   6  10  29  22    6 |   13  20  16  20  12  30  31    9
  31E |   8  26  20  18  16  34  18    7 |   16  29  29  17  15  35  28   11
------|----------------------------------|----------------------------------
 RMS  |  42  31  19  15  16 128  28      |   52  42  40  21  31 131  45
 WRMS |  20  27  17  15  15 130  28      |

Table 3.0723.5   GPS week: 0723   Day: 5   MJD: 49310.0

               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  18  15  11   9  30  29    6 |   18  17  29  21  14  39  34   12
   2  |  13  16  17  13  10  19  27    6 |   12  18  14  20  13  20  20    7
   3E |  12  10   8  11  10  35  21    5 |   27  32  24  26  27  28  27   22
   4  | --- --- --- --- --- ---   9    0 |  --- --- --- --- --- --- ---  178
   5  |   9   8  20   9  16  29  36    7 |   18  21  20  18  12  25  26   13
   7E |   9  12  12  14  11  44  24    6 |   25  26  27  21  15  43  27   14
   9E |  23  11  16   9  18  42  19    7 |   77  30  23  24  12  39  42   18
  12  |   8  14  16  11  13  30  19    6 |   17  21  18  15  14  23  29   12
  13E |  57  29  34 ---  40  71  52   20 |  162 160 147 --- 138 145 119  138
  14  |   8  14  20  12  11  36  24    6 |   10  18  13  15   9  28  22    8
  15  |   7  18  29  13  21  27  21    8 |   17  36  25  16  16  36  20   11
  16  |  12  19   8   9  13  35  35    7 |   11  21  16  11  15  27  35    8
  17  |  10  18   8  10  12  35  30    6 |   15  16  13  17  16  16  15    5
  18  |  27  13  22  11  13  24  24    7 |   15  18  26  15  10  20  25   11
  19E |  20  11  14  19   9  40  25    7 |   13  24  16  29  14  23  16   10
  20  |   9   8  11  12  13  16  19    5 |   17  21  20  11  12  15  25    9
  21  |   9   7   9  13   7  35  22    5 |   12  20  12  16  14  19  21    9
  22  |  14  16  29  14  11  16  30    7 |   16  23  25  18  16  21  29    9
  23  |   9  15  11  11   7  41  40    7 |   13  21  13  17  17  36  36    9
  24  |  20  22  18   6  17  54  67   11 |   15  23  18  16  17  46  35    8
  25E |  14  14  10  10  11  23  31    6 |   17  34  27  29  16  32  23   16
  26  |  11  17  16  11  12  19  21    6 |   17  18  21  12  11  28  27   10
  27E |  18  12  13  17  10  43  24    7 |   18  28  20  31  21  18  30   16
  28E |  10  17  11  17  18  25  17    6 |   13  24  27  21  17  25  23   11
  29  |  15  11  10  11   8  24  23    5 |   15  21  12  20  10  27  26   12
  31E |  12  17  21  16  18  52  21    8 |   12  29  22  18  16  45  32   13
------|----------------------------------|----------------------------------
 RMS  |  17  15  17  12  15  36  29      |   39  39  35  19  31  41  36
 WRMS |  15  15  17  12  14  36  30      |

Table 3.0723.6   GPS week: 0723   Day: 6   MJD: 49311.0

               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  14  10   9  10  23  32    5 |   19  20  18  20  11  27  32   11
   2  |  18  20   9  10  12  22  28    6 |   14  21  12  16  12  26  20    8
   3E |  24  15  12  49  19  37  23   11 |   18  21  19  35  21  29  22   18
   4  | --- --- --- --- --- ---   7    0 |  --- --- --- --- --- --- ---  147
   5  |  21   9  24   8  18  48  52    9 |   14  16  17  15  20  26  28   12
   7E |  21  27  18  17  16  39  19    8 |   22  27  19  26  14  49  28   14
   9E |  16  16  12  10  26  64  69   11 |   45  24  21  20  21  57  48   15
  12  |   6  16  10  11   9  43  26    6 |   13  16  15  13  11  40  20   10
  13E |  46  54  49 ---  22 120 103   25 |  133 111 135 ---  94 144 126  110
  14  |  13  10  20   5   7  29  47    7 |   11  12  12  15  10  31  36    9
  15  |  11  31  10  20  14  29  31    7 |   14  26  22  13  11  17  23    6
  16  |  10  18  11   6  12  24  38    6 |   13  16  15  14  14  22  33    9
  17  |  14  20  12  12  10  39  21    6 |   14  19  13  15  12  21  16    5
  18  |  18  10   9  10   8  30  34    6 |   16  19  15  14  12  34  26   11
  19E |  17  45  13  18  12  36  34    9 |   14  37  16  32  14  25  23   14
  20  |  10  12  11   7  15  36  29    6 |   13  16  14  13  14  36  24    9
  21  |  10  10   8  12   7  21  23    4 |   14  16  18  17  14  30  22   11
  22  |  10  19  13  10  10  43  31    6 |   15  18  18  16  16  19  30   10
  23  |   4  19  14  16   6  35  43    7 |   13  25  13  17  14  41  41   10
  24  |  16  19  11  16  12  29  65    8 |   17  19  17  21  14  37  35    9
  25E |  10  22  10  10  11  36  34    6 |   14  30  23  25  13  27  22   12
  26  |   9  19  14   8  14  86  24    9 |   18  19  19  16  14  71  28   11
  27E |  17  41  16  11  10  29  26    8 |   16  20  18  20  15  30  25   12
  28E |  13  21  12  15  12  28  13    6 |   15  20  25  20  16  28  24   16
  29  |  14  11  13  10   8  23  29    5 |   16  22  12  23  11  30  32   11
  31E |  12  18  13  13  13  28  15    6 |   14  22  24  17  13  18  26   10
------|----------------------------------|----------------------------------
 RMS  |  16  23  16  15  13  44  39      |   31  30  32  19  23  44  37
 WRMS |  15  22  15  15  13  45  40      |



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