Subject: [IGSREPORT-1859] Wk 0806 IGS Rapid Orbits
From: AC Coordinator / NRCan GSDivision
Date: Thu, 6 Jul 1995 14:33:00 PDT

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IGS Electronic Report    Thu Jul  6 14:33:00 PDT 1995      Message Number 1859
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Author: AC Coordinator / NRCan GSDivision
Subject: Wk 0806 IGS Rapid Orbits

Rapid Service IGS Orbit Combination - Week 0806   (Jun 18, 1995 - Jun 24, 1995)

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

COMBINATION STRATEGY:

  Starting with GPS week 803, the IGS Rapid orbit combination is done directly
in the ITRF without any alignment to the Bulletin A EOP series.
  Each centre satellite clock corrections are first transformed to a common 
reference. For each centre, a clock offset and a drift are estimated with 
respect to broadcast clock corrections using only non-SA satellites. 
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. The position weights are 
computed from each centre's absolute deviation to the unweighted average orbit 
after the estimation of a 7-parameter Helmert transformation. The clock weights
are computed from the absolute deviation of the initial alignment to broadcast 
clock for the non-SA satellites, provided these satellites are representative 
of the clock solution quality of each centre. Finally, a 7-parameter Helmert 
transformation and clock offset and drift are estimated for each centre with 
respect to combined solutions and parameters and RMS of fit reported here. All
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. The ERP used in this evaluation
are those submitted by the respective centres supplemented with IERS Bulletin A
UT1-UTC values when they are not supplied.
  Like the clock solutions broadcast in the navigation message, the combined
satellite clocks are corrected for the periodical relativistic correction (see
e.g. GPS interface Control document ICD-GPS-200, p.73):

                              -2*(X.V)/c,

where X and V are the inertial sv state and velocity vectors and c is the speed
of light. Also for compatibility, no satellite L1/L2 delay calibration should be
applied.

SOFTWARE:

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

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

PRODUCTS GENERATED:

  The resulting average ephemeris and clocks are output to daily files in SP3
format. The satellite accuracy codes displayed in the header are based on the
weighted RMS for each satellite. Note that each file contains all the
satellites that appear in any of the centre ephemeris files. If a satellite or
centre was excluded from combination, a note in the REMARKS section of this
report will identify the exclusion and the reason.
  The resulting x and y earth rotation parameters (ERP) associated with the IGS
ephemeris files are computed using a weighted average of all available centres 
(weights are those from the orbit combination). These values are supplemented 
with the current IERS Bulletin A UT1-UTC values. 

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

 IGS08060-6.SP3  IGS GPS ephemeris files for days 0-6, week 0806 in SP3 format.
 IGS08067.ERP    Earth rotation parameters (ERP) associated with ephemerides.
 IGS08067.SUM    Complete report.

REMARKS on IGS Rapid Service Orbit Combination:

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

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

3. Centre clock weights were determined using the following non-SA satellites:
   PRN15 and PRN28 on days 0-4 (Jun 18-22) and PRN12, PRN15 and PRN28 on days
   5-6 (Jun 23-24). PRN12 was declared healthy starting on day 5 (Jun 23) 
   at 16:50 (ref. NANU 135-95174).

4. 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
           -------------+----------+---------+------------------
            0 (Jun 18)  |   ALL    |   GFZ   | up to ~ 015 ns
            1 (Jun 19)  |   ALL    |   GFZ   | up to ~ 010 ns

5. There was a maneuver of PRN04 on day 4 (Jun 22) (ref. NANU 133-95173).
   The ESA solution which modeled the maneuver is provided for that satellite
   on that day as the combined solution. An associated accuracy code of 0
   (unknown) was given since there was no redundancy. The ESA, SIO and the 
   combined solutions for PRN04 were excluded from the long arc evaluation on 
   day 4 due to unrealistic RMS caused by the maneuver.

6. 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 (Jun 18)  | ALL  | SIO (a)
                     1 (Jun 19)  | ALL  | SIO (a)
                     2 (Jun 20)  | ALL  | SIO (a)
                     3 (Jun 21)  | ALL  | SIO (a)
                     3 (Jun 21)  | 12   | EMR
                     4 (Jun 22)  | ALL  | SIO (a)
                     5 (Jun 23)  | 6,17 | SIO     
                     5 (Jun 23)  |22,24 | SIO     
                     5 (Jun 23)  | 04   | EMR     
                     5 (Jun 23)  | 06   | SIO     

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

7. Starting with GPS week 803, the IGS Rapid orbit combination is done directly
   in the ITRF without any alignment to the Bulletin A EOP series.

   Since on the average the mean GPS pole agrees within a fraction of mas with 
   the ITRF aligned Bulletin A, this change of IGS combination strategy should 
   not introduce any noticeable discontinuities in the IGS Rapid orbits.

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 1.0806.a). It also displays the computed satellite position sigmas for
the combined orbits (table 1.0806.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 2.0806.0-6). 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 3.0806.0-6). 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 0806 summary.                       (Jun 18, 1995 - Jun 24, 1995)

Table 1.0806.a   GPS week: 0806   MJD: 49886.0-49892.0

         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  57 | .00  .03  .01  -.38  -.13  -.07   .0  .10  .08 |   -3.4   -3.2   78.5
        | .01  .01  .01   .19   .14   .20   .1           |    4.6    9.8
emr  27 | .02 -.02  .00   .08   .05   .24   .013.74  .90 | -923.6  -22.2    1.7
        | .01  .01  .01   .16   .23   .09   .1           |   39.7    9.5
esa  34 | .00 -.02 -.02   .79  -.02   .02   .1  .16  .14 |  -13.2    1.6   34.2
        | .01  .01  .01   .39   .25   .45   .2           |   16.0   27.9
gfz  42 |-.04 -.01  .00   .05   .21  -.39  -.3  .12  .12 | -921.1  -21.9    5.6
        | .01  .01  .00   .16   .17   .08   .1           |   39.6   11.8
jpl  36 | .01  .04  .01  -.23   .10   .24   .2  .10  .10 | -564.2  -17.2     .9
        | .01  .01  .01   .15   .13   .17   .1           |  589.5   16.9
ngs  36 | .01 -.06 -.01  -.45   .20  -.22   .5  .20  .20 |   -4.7   -1.0   78.8
        | .01  .02  .02   .33   .35   .17   .2           |    5.3   11.4
sio  33 | .01 -.08  .07  2.45 -3.97 -5.95   .2712.8762.0 |     .0     .0     .0
        | .01  .02  .06   .48   .80  4.38   .2           |     .0     .0

Table 1.0806.b   GPS week : 0806   MJD: 49886.0-49892.0

         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   4   4   5   3   3 |
   2E |   4   5   5   6   7   5   6 |
   4E |   6   6   7   8   0  10   4 |  Maneuver on day 4
   5E |   4   4   4   4   5   5   4 |
   6  |   4   3   4   3   4   3   3 |
   7  |   4   5   5   5   6   5   5 |
   9  |   5   3   6   6   4   5   3 |
  12E | --- --- ---   0  22   9   6 | Low tracking on day 3.
  14  |   3   4   3   3   4   3   4 |
  15E |   6   5   5   5   6   6   6 |
  16  |   4   4   4   3   6   8   6 |
  17E |   6   5   5   7   8   5   5 |
  18  |   4   3   3   3   3   3   2 |
  19  |   4   3   3   4   4   4   4 |
  20E |   4   5   4   4   5   5   5 |
  21  |   4   4   5   5   4   4   4 |
  22E |   4   5   3   4   5   4   4 |
  23  |   9   9   8   7  10   8   7 |
  24E |   5   5   4   6   5   6   5 |
  25  |   5   5   3   4   3   4   4 |
  26  |   5   3   3   5   5   5   4 |
  27  |   4   4   3   3   5   3   4 |
  28  |   5   4   3   3   4   3   4 |
  29  |   3   3   2   2   3   3   3 |
  31  |   4   3   4   4   4   4   4 |

Table 2: Daily transformation of each centre to the combined IGS orbit and
         clocks for each day of the week. The transformation displayed is the
         sum of a priori and estimated transformations.
         WRMS - RMS weighted by the centres SP3 header accuracy codes.
         STA  - Number of stations in the daily solutions.
         Units: meters, mas, ppb, nano-sec, nano-sec/day.

Table 2.0806.0   GPS week: 0806   Day: 0   MJD: 49886.0

CENT STA|  DX   DY   DZ    RX    RY    RZ  SCL  RMS WRMS |   TOFT  TDRFT    RMS
--------|------------------------------------------------|---------------------
cod  56 | .00  .02  .00  -.30  -.07   .21   .0  .10  .09 |   -7.1    8.6   78.8
emr  27 | .01 -.01  .01   .13  -.32   .15   .0  .11  .11 | -861.6  -23.5     .6
esa  35 | .00 -.03 -.05  1.40  -.02  -.77   .1  .18  .18 |  -15.3   12.4   20.6
gfz  43 |-.04 -.02 -.01   .19   .21  -.28  -.4  .11  .11 | -866.1  -10.0   13.0
jpl  34 | .02  .04  .02  -.36   .08   .39   .3  .10  .10 | -858.7  -23.6     .8
ngs  38 | .03 -.06 -.02  -.45  -.11  -.18   .3  .18  .17 |   -6.7    8.8   78.7
sio  33 | .01 -.11  .07  1.87 -2.47-12.21   .4  .22  .21 |     .0     .0     .0

Table 2.0806.1   GPS week: 0806   Day: 1   MJD: 49887.0

CENT STA|  DX   DY   DZ    RX    RY    RZ  SCL  RMS WRMS |   TOFT  TDRFT    RMS
--------|------------------------------------------------|---------------------
cod  57 | .01  .03  .01  -.35  -.25  -.01   .0  .11  .09 |   -7.2    6.5   78.3
emr  28 | .01 -.02  .00   .14  -.12   .18   .0  .08  .07 | -887.3  -22.9    1.4
esa  35 |-.01 -.02 -.02   .92   .29  -.18  -.2  .14  .13 |  -18.4   -8.7   33.4
gfz  41 |-.03 -.01  .00  -.09   .12  -.35  -.2  .10  .10 | -875.9  -35.2    6.4
jpl  37 | .00  .04  .01  -.27   .07   .35   .1  .11  .11 | -886.9  -23.2    1.2
ngs  37 |-.01 -.06 -.04   .08   .32  -.42   .9  .21  .19 |  -11.7   15.3   78.5
sio  35 | .01 -.05  .14  1.91 -3.47 -9.68   .3  .21  .21 |     .0     .0     .0

Table 2.0806.2   GPS week: 0806   Day: 2   MJD: 49888.0

CENT STA|  DX   DY   DZ    RX    RY    RZ  SCL  RMS WRMS |   TOFT  TDRFT    RMS
--------|------------------------------------------------|---------------------
cod  59 |-.01  .03  .00  -.27  -.23   .01   .1  .09  .08 |    -.3   -9.9   78.6
emr  28 | .02 -.03  .00   .21  -.06   .25   .0  .07  .07 | -910.3  -30.2     .7
esa  38 | .01 -.03 -.03   .58   .06  -.22   .2  .15  .15 |  -20.6  -15.4   16.8
gfz  44 |-.04 -.01 -.01   .15   .20  -.38  -.3  .13  .13 | -907.4  -31.3     .7
jpl  37 | .00  .04  .01  -.28   .20   .16   .1  .08  .08 | -909.9  -30.6     .7
ngs  35 | .01 -.04  .02  -.49  -.23  -.34   .6  .24  .23 |    -.4   -7.4   79.1
sio  32 | .01 -.10 -.04  2.14 -4.16 -7.94   .0  .22  .19 |     .0     .0     .0

Table 2.0806.3   GPS week: 0806   Day: 3   MJD: 49889.0

CENT STA|  DX   DY   DZ    RX    RY    RZ  SCL  RMS WRMS |   TOFT  TDRFT    RMS
--------|------------------------------------------------|---------------------
cod  59 | .00  .03  .02  -.17  -.15   .03   .0  .09  .09 |    -.9   -8.8   80.4
emr  26 | .03 -.02  .00  -.04   .29   .28  -.236.36 2.36 | -925.9  -34.0    3.8
esa  33 | .00 -.01 -.02   .62  -.52   .34   .2  .15  .12 |  -37.6   15.8   15.0
gfz  42 |-.03 -.01  .00   .20   .21  -.32  -.4  .11  .11 | -924.1  -31.8    1.5
jpl  37 |-.01  .03  .01   .04  -.04   .00   .2  .08  .08 | -926.6  -32.4     .8
ngs  35 | .01 -.06  .00 -1.05  -.11  -.08   .2  .21  .20 |   -2.9   -8.6   80.5
sio  34 | .03 -.08  .08  2.48 -4.20 -5.99   .3  .21  .20 |     .0     .0     .0

Table 2.0806.4   GPS week: 0806   Day: 4   MJD: 49890.0

CENT STA|  DX   DY   DZ    RX    RY    RZ  SCL  RMS WRMS |   TOFT  TDRFT    RMS
--------|------------------------------------------------|---------------------
cod  58 | .01  .02  .00  -.27  -.25  -.43  -.1  .09  .07 |   -3.1  -10.3   76.8
emr  25 | .01 -.03  .01   .32   .33   .27   .0  .12  .10 | -951.2  -15.8    1.1
esa  34 | .00 -.02 -.01   .24  -.10   .59   .0  .17  .15 |   14.4  -39.7   53.3
gfz  42 |-.05 -.01  .00   .16  -.03  -.45  -.3  .14  .14 | -950.8  -13.4    1.8
jpl  37 | .02  .05  .00  -.15  -.05   .47   .3  .13  .11 |  296.3     .8    1.0
ngs  34 | .03 -.08 -.02  -.43   .29  -.25   .4  .21  .20 |   -5.9   -7.3   76.8
sio  30 | .02 -.08  .12  2.92 -4.89 -4.42   .21.9e42.0e4 |     .0     .0     .0

Table 2.0806.5   GPS week: 0806   Day: 5   MJD: 49891.0

CENT STA|  DX   DY   DZ    RX    RY    RZ  SCL  RMS WRMS |   TOFT  TDRFT    RMS
--------|------------------------------------------------|---------------------
cod  57 | .00  .04  .00  -.58  -.08  -.18   .0  .10  .09 |   -9.0    6.3   79.6
emr  26 | .01 -.02  .00  -.11   .08   .39   .1  .18  .09 | -966.4   -5.2     .6
esa  33 | .00 -.02 -.02  1.17   .00   .15   .0  .15  .12 |   -3.3   49.0   49.3
gfz  43 |-.03 -.01  .00  -.08   .25  -.46  -.2  .12  .12 | -963.7   -6.0     .6
jpl  34 | .01  .06  .00  -.17   .09   .19   .2  .11  .11 |  298.5   12.0     .5
ngs  37 | .00 -.05 -.02  -.40   .56   .06   .5  .17  .17 |   -9.0    7.7   79.8
sio  35 | .01 -.05  .08  2.92 -4.57 -1.45   .1  .58  .47 |     .0     .0     .0

Table 2.0806.6   GPS week: 0806   Day: 6   MJD: 49892.0

CENT STA|  DX   DY   DZ    RX    RY    RZ  SCL  RMS WRMS |   TOFT  TDRFT    RMS
--------|------------------------------------------------|---------------------
cod  56 | .00  .04  .01  -.72   .14  -.10   .0  .10  .09 |    3.6  -14.6   76.6
emr  26 | .02 -.02  .00  -.05   .11   .16   .1  .08  .08 | -962.3  -24.1    1.1
esa  33 | .01 -.03 -.02   .62   .12   .22   .3  .15  .13 |  -11.8   -1.9   29.8
gfz  42 |-.05 -.01  .00  -.20   .53  -.49  -.2  .12  .12 | -959.4  -25.4     .9
jpl  34 | .01  .05  .01  -.42   .32   .12   .2  .09  .09 | -962.4  -23.6    1.1
ngs  38 | .01 -.04 -.03  -.41   .65  -.33   .4  .19  .21 |    3.7  -15.3   78.2
sio  34 |-.01 -.08  .02  2.92 -3.99   .02  -.1  .20  .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 3.0806.0   GPS week: 0806   Day: 0   MJD: 49886.0

               Weighted Average                Orbit Dynamics (7 days)
 PRN  | cod emr esa gfz jpl ngs sio  IGS |  cod emr esa gfz jpl ngs sio  IGS
------|----------------------------------|----------------------------------
   1  |   5   4  20   8   8   6  18    3 |    9   9  26  12  12  10  35   13
   2E |   8  14  15   9   8  15  11    4 |    9  16  17  18   8  13  26   10
   4E |  13  12  20  10  19  19  16    6 |   10  17  17  18   6  20  29   12
   5E |   9   9  19   9   8  11  14    4 |    7  14  23  18   8  16  23   10
   6  |   8   7  14   5   4  11  29    4 |    4  10  13  13   6  12  28    8
   7  |   3  13  17   7   9  12  20    4 |    6  11  13  14   5  15  32    7
   9  |  11  10   9  12  13  12  20    5 |    4  11  15  18   7  17  27    8
  14  |   5   8  16   4   9  12  13    3 |    6  11  20  15   9  18  16    9
  15E |  10  19  12  12  10  28  22    6 |   10  17  21  22  12  31  24   12
  16  |   9   9  19   7   9  17  17    4 |    7  12  12  16   7  12  19   10
  17E |  14  14  14   7  10  14  35    6 |   23  26  26  28  28  29  35   24
  18  |   8   6  21   6   3  17  25    4 |   10   9  17  11   9  18  20    9
  19  |   9  17  12   6   7  18  14    4 |    5  15  14  16   4  23  24    7
  20E |  10   7  18   9  10  12  16    4 |    7  18  23  18  10  19  20   12
  21  |   9   6  18  12   9  16  13    4 |    5   9  17  19   4  11  25    9
  22E |   7   6  20  11   8  12  22    4 |    9  12  20  18   8  15  18    9
  23  |  19  15  24  30  17  26  28    9 |   33  32  20  38  35  34  36   29
  24E |  11   9  18  12  12  17  30    5 |    7  20  25  22   8  19  32   14
  25  |   4   8  14   9  10  21  32    5 |    7  11  12  11   8  27  22   11
  26  |  12   8  14   9   6  30  18    5 |    6   8  14  13   8  11  17    6
  27  |   5   6  12   9   7  19  14    4 |    5  10  15  17   5  19  26    7
  28  |   5   6  24   7  11  21  25    5 |    3   6  10  13   6  16  12    6
  29  |   5   8  15   5   5  11  19    3 |    6  10  17  12   9  14  17    7
  31  |   7   5  13   9   6  13  29    4 |    5   8   9  14   4  14  20    6
------|----------------------------------|----------------------------------
 RMS  |   9  10  17  10  10  17  22      |   10  14  17  18  11  19  25   11
 WRMS |   8  10  18  10  10  17  20      |

Table 3.0806.1   GPS week: 0806   Day: 1   MJD: 49887.0

               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   5   5   6   5  11  20    3 |    7   6  14  12   5  10  28    6
   2E |  13  10  19  11  11  16  15    5 |   12  14  16  15   7  13  32   10
   4E |  15   7  10   7  16  39  30    6 |    6  18  18  15   5  32  35   11
   5E |  10   5  17   9  10  15  25    4 |    8  13  24  17   8  16  27   11
   6  |   6   5  12   4   6  15  20    3 |    5  10  18  10   5  14  31    8
   7  |   9  12  10  11   9  36  23    5 |    5  18  14  10   8  25  31    9
   9  |   9   4   9   4   9  18  19    3 |    7   9  18  15   6  15  25    8
  14  |   8   8  11   4   7  13  24    4 |    7  12  18  12   6  17  27    8
  15E |  11  10  10  14  17  23  20    5 |    9  20  25  24  13  27  21   14
  16  |   8   5  12   6  11  29  17    4 |    9  11  17  13   9  22  24   10
  17E |  13   7  16  10  13  17  23    5 |   22  24  35  23  19  25  43   22
  18  |   5   3  12   5   3  15  22    3 |    6  11  13   8   8  18  21    8
  19  |   8   5  10   7  10  15  21    3 |    6  13  16  12   6  21  28    8
  20E |   9   6  22   8   8  28  16    5 |    5  16  25  15   7  23  25   12
  21  |   7   7  13  13   9  20  12    4 |    7   9  17  17   5  14  24    8
  22E |   8   8  20  12   7  22  24    5 |    6  13  12  19   7  18  25    9
  23  |  30  13  17  26  17  24  13    9 |   38  55  40  64  55  51  61   47
  24E |   8   6  13  12  13  17  30    5 |    8  18  24  18   5  24  32   13
  25  |  10   7  17   8   9  20  26    5 |    8  11  13  11   6  26  28    7
  26  |   4   6   9   4   5  16  17    3 |    4   6  14   7   3  15  24    5
  27  |   7   7  11   6  13  16  20    4 |    4  10  13  11   8  22  30    7
  28  |   7   5  14   5   6  20  19    4 |    5   7  12   9   5  19  16    5
  29  |   5   6   8   5   4  13  18    3 |    3   8   9   6   5   9  23    5
  31  |   6   5  10   5   9   9  14    3 |    4   9  11  11   8  16  19    6
------|----------------------------------|----------------------------------
 RMS  |  10   7  13  10  10  21  21      |   11  17  19  19  13  22  29   13
 WRMS |   8   7  12   9  10  19  21      |

Table 3.0806.2   GPS week: 0806   Day: 2   MJD: 49888.0

               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   5   8  12   5  22  22    4 |    6   5  22  13   6  17  29    5
   2E |   8   6  12  16   9  26  25    5 |   11  16  22  19   7  22  38   10
   4E |  10   9  17  15  13  54  15    7 |    6  21  33  22   4  38  28   13
   5E |   8   7  17  10   9  16  14    4 |   10  13  27  19  10  20  32   10
   6  |   6   5  10   9   6  21  25    4 |    3  10  21  12   3  22  36    6
   7  |   5   9  15  10   8  38  23    5 |    5  15  21  12   5  31  37    7
   9  |  14  10  13  21  10 ---  27    6 |    7  13  22  18   6 ---  36    7
  14  |   7   4   8   5   8  15  17    3 |    6  14  18  13   8  17  31    8
  15E |   9   9  23  14   9  22  25    5 |    6  18  32  26   8  24  23   12
  16  |   6   5  16  10   5  25  14    4 |    8   9  19  16   6  21  25    8
  17E |   9   8  11  10  10  35  35    5 |   21  20  32  25  18  27  55   19
  18  |   5   3   8   6   4  21  12    3 |    6  12  21  12  10  20  26    9
  19  |   5   5   9   7   7  10  11    3 |    6  11  21  14   5  12  31    7
  20E |   6   6  13  11   8  17  18    4 |    6  14  29  16   7  23  26   10
  21  |   9   6  25  16   5  31  16    5 |    6   9  24  24   4  24  28    6
  22E |   5   5   8  12   7  10  20    3 |    6  12  17  14   6  15  24    7
  23  |  19  15  23  29  14  30  36    8 |   37  61  56  60  59  55  53   51
  24E |   6   8  18  11   9  22  14    4 |    7  18  24  21   8  24  33   13
  25  |   5   4  10  12   6  15  24    3 |    7  10  12  11   5  20  32    6
  26  |   4   6  17   9   6  18  16    3 |    3   7  20  10   5  11  26    3
  27  |   7   4  12  11   8  13  16    3 |    7  10  20  17   7  13  34    8
  28  |   6   4  16   9   4  12  20    3 |    3   8  16  17   7  11  19    4
  29  |   3   3   7   2   3  11  12    2 |    5   6  17  11   7  16  25    6
  31  |   5   5  15  14   6   8  27    4 |    3  11  11  15   6  12  30    7
------|----------------------------------|----------------------------------
 RMS  |   8   7  15  13   8  24  21      |   10  17  24  20  14  23  32   13
 WRMS |   7   7  15  12   8  22  18      |

Table 3.0806.3   GPS week: 0806   Day: 3   MJD: 49889.0

               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  10   7   4   3  24  34    4 |    7  13  10  16   6  21  29    6
   2E |  10  17  15  16   7  18  28    6 |   13  20  22  19   7  15  40   12
   4E |  16  12  28  11 ---  39  14    8 |    5  23  31  19 ---  28  31   15
   5E |  11   7  13  11   6  17  19    4 |   10  15  25  24   9  21  26   11
   6  |   6  11   9   5   6  16  15    3 |    5  16  14  19   5  13  28    7
   7  |   5  15   8  14   7  23  24    5 |    7  16  14  15   5  22  34    8
   9  |  13  17  14   9  10  24  29    6 |    7  23  19  21   6  20  26    9
  12E | --- >>> --- ---   1 --- ---    0 |  ---  39 --- ---  20 --- ---    2
  14  |   7   9  10   7   6   8  17    3 |   10  14  19  18   4  18  24    7
  15E |   7   8  12  16   9  19  28    5 |    9  21  21  28   8  33  28   13
  16  |   7   5  12   7   5  15  23    3 |   10  12  14  19   6  14  29    8
  17E |  17  13  29  12  14  22  24    7 |   18  28  41  27  19  28  33   21
  18  |   8   6   7   7   5  15  16    3 |    9  10  15  15   7  20  27    8
  19  |   9   6  10   9   7  15  18    4 |    9  13  17  15   9  22  35    8
  20E |   7  11  11   9   8  15  16    4 |    5  16  20  22   8  16  25    9
  21  |   9  10  19  15   8  21  20    5 |    8  10  18  25   4  13  27    7
  22E |   5   9   9  11   7  14  20    4 |    8  15  16  21   5  12  26    8
  23  |   9  12  19  23  19  24  19    7 |   41  50  54  45  49  48  53   44
  24E |   8  11  23  12  10  32  12    6 |    8  20  31  21   8  31  35   12
  25  |   6   9   9   9   8  27  13    4 |    8   9  13  17   4  25  24    6
  26  |   8  13  14   5   6  32  17    5 |    6  14  17  20   8  25  30    5
  27  |   7   6  13   6   6  10  21    3 |    4  10  19  14   6  15  32    8
  28  |   6   7  13   7   6  11  19    3 |    5   9  12  17   6  15  18    4
  29  |   5   3   8   4   4  15  15    2 |    6   5  13  16   6  22  27    5
  31  |   6   7  12  10   6  16  18    4 |    5  12  14  18   4  22  23    6
------|----------------------------------|----------------------------------
 RMS  |   9 >>>  15  11   8  21  21      |   11  19  22  21  12  23  30   12
 WRMS |   8 235  12  10   8  20  20      |

Table 3.0806.4   GPS week: 0806   Day: 4   MJD: 49890.0

               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   6  15   6   8  31  25    5 |    8   7  28  13  11  20  41    7
   2E |  12  16  19  22  10  15  29    7 |   13  16  25  20   9  22  48   11
   4E | --- ---   4 --- --- --- >>>    0 |  --- ---   0 --- --- ---   0  ---
   5E |  10   8  21  12   7  15  32    5 |    9  15  32  18  11  19  43   12
   6  |   5   7  13   7   6  18  21    4 |    5  10  17  11   3  14  44    6
   7  |   6  11   9  28  11  20  25    6 |    7  12  17  19   9  21  41    6
   9  |   6  10  10  13   7  12  23    4 |    6  17  21  16   9  17  39   10
  12E | ---  32  15 ---  37 --- ---   22 |  ---  11  18 ---  28 --- ---   22
  14  |   5   4  15   8   6  20  23    4 |    7  10  24  14   5  20  35    7
  15E |  11  10  18  15  16  26  20    6 |    7  19  26  24  12  25  24   11
  16  |   8   5  14  14  12  36  19    6 |   11  10  22  19   9  17  36    8
  17E |  15  12  38  11  16  22  31    8 |   18  24  31  24  19  28  49   17
  18  |   5   5   8   8   4  11  18    3 |    7  12  19  10   9  13  31    8
  19  |   6   7  12  10   6  26  13    4 |    6  12  22  14   8  32  38   10
  20E |   8  10  13  15   9  12  22    5 |    7  15  23  19   7  16  30   10
  21  |   6   8  15  14   7  11  18    4 |    7   8  24  25   8  14  35    9
  22E |   7  13  17  11   8  17  20    5 |   10  12  21  15   7  27  38   10
  23  |  24  17  23  30  18  22  38   10 |   40  49  37  62  49  46  55   43
  24E |   6  11  24  11  13  13  14    5 |    7  18  32  16  12  22  57   11
  25  |   4   6  11   6   7  20  15    3 |    7   8  24  12   7  22  28    6
  26  |   6   7   8  10   9  32  22    5 |    5   7  23  16   9  30  34    7
  27  |   8   8  22  10   7  19  18    5 |    7  10  22  12   7  24  38    9
  28  |   6   6  14   9   6  16  24    4 |    5   9  17  17   6  17  20    5
  29  |   6   5   7   4   5  11  18    3 |    7   8  20   8   6  10  30    5
  31  |   6   6  15  11   8  18  24    4 |    6   9  17  16   6  25  23    5
------|----------------------------------|----------------------------------
 RMS  |   9  11  17  14  12  20 >>>      |   11  16  24  20  14  23  38   13
 WRMS |   7   9  15  14  10  20 >>>      |

Table 3.0806.5   GPS week: 0806   Day: 5   MJD: 49891.0

               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   7   8   5  11  14    3 |    4   8  12  15   8  19  37    5
   2E |  11   8  13  13   9  23 ---    5 |   11  17  23  18   7  21 ---   13
   4E |  19  79  18  18 ---  12 ---   10 |   17  27  17  15 ---  15 ---   10
   5E |   9   5  21   9  16  10  34    5 |   10  15  26  20  12  21  37   13
   6  |   6   4  13   5   6   9 126    3 |    3  11  19  11   6  13 116    7
   7  |   7   9   8  16  12  16  24    5 |    6   8  15  13  13  15  32    6
   9  |  10   6   9  13  14  12  37    5 |    4  11  16  17  10  13  36    8
  12  | ---   6  14 --- --- --- ---    9 |  ---  11  16 --- --- --- ---   12
  14  |   6   7   9   6   6  12  27    3 |    7  11  17  18   7  17  30    9
  15E |  11   8  23  16  13  22 ---    6 |    8  19  32  27  16  31 ---   14
  16  |   9   6  11   8  11  43  79    8 |    9  12  18  16   7  12  73    8
  17E |   9  11  13  12  16  11 111    5 |   23  25  27  22  17  26  85   20
  18  |   7   4   8   7   7  11  20    3 |    6  10  15  15  10  13  29    7
  19  |   5   8  10  12  10  16  19    4 |    6  16  19  13   6  22  34   10
  20E |   9   6  17  10  12  17  40    5 |    6  14  22  20   8  17  37   11
  21  |   8   7   8  17   7  10  15    4 |    7   9  15  22   8  14  29    7
  22E |   8   8  13   9   7  10 108    4 |    8  11  18  15   6  15  75    8
  23  |  13  17  32  22  16  16  24    8 |   27  52  25  57  48  41  51   39
  24E |  16   9  19   8  10  25 117    6 |   11  19  26  19   9  18  78   12
  25  |  10   6  26   7   8  10  14    4 |    8   9  18  13  11  14  25    6
  26  |   5   8  13  11   9  22  31    5 |    7   5  15  11  10  20  42    4
  27  |   5   5   8   9  10  12  15    3 |    6  10  17  12   8  19  32    9
  28  |   8   4  11   8   8  12  20    3 |    9   7  12  15  10  14  21    6
  29  |   7   5  11   7   7  13  18    3 |    8   6  14  13   7  14  34    5
  31  |   6   5  11  10   5  15  24    4 |    6  11  14  12   5  18  21    7
------|----------------------------------|----------------------------------
 RMS  |   9  17  15  12  10  17  58      |   10  16  19  20  13  19  51   12
 WRMS |   9   8  12  12  10  16  47      |

Table 3.0806.6   GPS week: 0806   Day: 6   MJD: 49892.0

               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   3   9   8   6   7  15    3 |    8   8  15  18   7  10  35    7
   2E |  11   7  22  21  10  18  19    6 |   11  18  25  23   7  22  40   14
   4E |  10   9  14   8  10  17  14    4 |    9  18  11  12  17  13  25   10
   5E |  13   5  16   9  10  10  19    4 |   13  17  25  21  11  22  39   14
   6  |   8   6  10   7   5  14  17    3 |    3   9  15  13   4  12  49    6
   7  |   8   7  21  15   8  11  20    5 |    6  10  21  12   7  19  40    9
   9  |  10   8   9   6   7   8  19    3 |    5  11  21  14   7  12  38    8
  12  |  13   9  11   8 --- ---  19    6 |    6  14  14   4 --- ---  17   10
  14  |   7   4  16   5   6  15  25    4 |    9  11  21  13   5  14  37    9
  15E |   9  13  20  15  12  23  28    6 |   12  19  26  28  14  26  23   15
  16  |   8   6   6   9   9  41  21    6 |    9  11  16  14   7  16  34    8
  17E |  12  10   9  11  12  21  23    5 |   28  30  35  26  26  31  63   29
  18  |   5   2   8   8   4  13  12    2 |    9  10  19  14   7  10  27    8
  19  |   5   4  11  15   8  22  10    4 |    4  12  22  12   5  26  32   11
  20E |   9   6  28   9  10  14  22    5 |    9  15  21  19  10  18  35   11
  21  |   8   4  11  18   8  21  11    4 |    5  10  17  26   7  16  34    9
  22E |  11  10   9   9   9  14  23    4 |   10  12  18  16   7  19  40   10
  23  |  16  12  11  25  14  28  25    7 |   18  31  20  31  30  36  33   22
  24E |  11   8  15  12   8  26  21    5 |    9  15  21  16   8  18  35   12
  25  |   7   8  22   8   8   7  16    4 |    6   9  23  12   5  13  27    7
  26  |   6   6  11   5   8  27  18    4 |    7   7  19  11   8  23  37    6
  27  |   7   4  10  14   8  15  13    4 |    6   9  22  13   5  19  33   10
  28  |   5   5  11  14   6  16  22    4 |    5   7  18  18   6  10  21    5
  29  |   8   5  10   7   5  13  13    3 |   10   6  20  13   7  13  34    7
  31  |   8   7   9   9   7  12  21    4 |    5  10  17  14   5  12  23    6
------|----------------------------------|----------------------------------
 RMS  |   9   7  14  12   9  19  19      |   10  14  20  17  11  19  35   11
 WRMS |   8   7  13  12   9  20  17      |

[Mailed From: Remi Ferland <[email-masked]>]