Subject: [IGSREPORT-4578] Wk 0941 IGS Final Orbits
From: AC Coordinator / NRCan GSDivision
Date: Wed, 4 Feb 1998 7:10:54 PST

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IGS Electronic Report    Wed Feb  4  7:10:54 PST 1998      Message Number 4578
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Author: AC Coordinator / NRCan GSDivision
Subject: Wk 0941 IGS Final Orbits

Final IGS Orbit Combination - Week 0941   (Jan 18, 1998 - Jan 24, 1998)

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

COMBINATION STRATEGY:

For a complete description of combination strategy, please refer to the report
posted on CDDIS (IGS09417.SUM).

SOFTWARE:

  The weighted average software used was originally developed by T. Springer
and G. Beutler in 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 G., Kouba J. and T. Springer, 1995, Combining the orbits of the IGS 
   Analysis Centers, Bulletin Geodesique, 69, pp 200-222.

   Kouba J., Mireault Y. and F. Lahaye, 1995, 1994 IGS Orbit/Clock Combination
   and Evaluation, Appendix I of the Analysis Coordinator Report, International
   GPS Service for Geodynamics (IGS) 1994 Annual Report, pp. 70-94.

   Kouba J. and Y. Mireault, 1996, IGS Analysis Coordinator Report, 
   International GPS Service for Geodynamics (IGS) 1995 Annual Report, 
   pp. 45-76.

   Kouba J. and Y. Mireault, 1997, Analysis Coordinator Report, 
   International GPS Service for Geodynamics (IGS) 1996 Annual Report, 
   pp. 55-100.

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 and their rates (xrt, yrt) are computed using a weighted average
of all available centres (weights are those from the orbit combination). 
Pole rate combination uses only centres providing estimated pole rates.

  Starting with GPS wk 0894, IGS LOD combinations were implemented in the 
Final IGS solutions.  AC LOD biases with respect to Bulletin A are estimated
using Bulletin A most recent 3 weeks (21 days), i.e. up to 5 days prior to
the last non-predicted day of Bulletin A.  AC LOD biases are removed and the
new AC bias-free LODs are used to compute a weighted IGS LOD which in turn
is integrated into IGS UT1-UTC. The starting UT1-UTC value is chosen as
Bulletin A fifth day prior to its last non-predicted day. Both IGS LOD and 
UT1-UTC values are printed in the IGS Final erp file.

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

 IGS09410-6.SP3  IGS GPS ephemeris files for days 0-6, week 0941 in SP3 format.
 IGS09417.ERP    Earth Rotation Parameters (ERP) and their rates as well as
                 Universal Time (UT1-UTC) and Length Of Day (LOD) associated 
                 with IGS ephemerides.
 IGS09417.SUM    Complete report.

REMARKS on IGS Final Orbit Combination:

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

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

3. Rapid ("IGR") orbits/clocks are included in the combination for statistics
   only.

4. The following centre clock solutions, which provide broadcast clock
   corrections, were excluded from the combination but kept in the combination
   statistics:
            -> Centre: NGS 

5. Centre clock weights were determined using the following satellites:

         Day | PRN list | Ref. Centre 
        -----+----------+-----------------
         0-6 |    All   |    COD  (see note below)

     Note: A chosen reference centre is aligned to the broadcast GPS clocks
           using all satellites; all other centres are then aligned to that
           reference centre. The clock weights are computed from the absolute
           deviation of centre's aligned clock corrections with respect to the
           unweighted mean.

6. The following table lists all maneuvered satellites for this week.
   No combined solutions were provided for these satellites since ESA, which 
   generally modeled the maneuver, was late for submission. These satellites 
   were excluded from the long arc evaluation on these days due to unrealistic 
   RMS caused by the maneuver.

               PRN | Day |    Date    | Ref. NANU
               ----+-----+------------+-----------
                08 |  4  | 1998_01_22 | 98011,98017 (a)
                08 |  5  | 1998_01_23 | 98011,98017 (a)
                16 |  6  | 1998_01_24 | 98018

   (a) PRN08 was set unusable from Jan 22/01:06 (wk 941/day 4) to Jan 24/01:02
       (wk 941/day 6) (ref. NANU 98017). During that period, a maneuver occured 
       as well (ref. NANU 98011).

7. The following 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.

                  Day | Centre | PRN list
                  ----+--------+---------------
                  4-5 |  ALL   |  8 (see Remark #6)
                   6  |  ALL   | 16 (see Remark #6)
                  2-4 |  NGS   | ALL (High Rotations - see Table 2)
                   6  |  NGS   | ALL (High Rotations - see Table 2)

8. State vector resets were modeled for the following satellites to
   alleviate the effects of modeling problems, experienced by all centres,
   in the Long Arc (LA) process:

          Day (Date) |   TIME   |  PRN  | Centres  | Reason
         ------------+----------+-------+----------+-------------------
          3 (Jan 21) | 00:00:00 |  16   |   All    | Mod. problems/Maneuver(a)
          3 (Jan 21) | 00:00:00 |  23   |   All    | Modeling problems
          5 (Jan 23) | 00:00:00 |  15   |   All    | Modeling problems
          6 (Jan 24) | 00:00:00 |  08   |   All    | Maneuver (b)
         0-6(Jan 18-)| --:--:-- |  14   |   All    | Modeling problems (c)

   (a) Satellite PRN16 was excluded from long arc evaluation on days 5 and 6
       for all centres due to unrealistic RMS and maneuver (see Remark #6).

   (b) Satellite PRN08 was excluded from long arc evaluation on days 4-5
       for all centres due to unrealistic RMS and a maneuver (see Remark #6).

   (c) Satellite PRN14 was excluded from long arc evaluation on days 0-6
       for all centres due to unrealistic RMS.

9. PRN13 was included in this week's Final combination although its status is 
   still UNHEALTHY. Users are reminded to use it with extreme caution.
   PRN13 was launched on Jul 23 1997 (wk 0915 day 3) at 03:43 UT.  It resides
   in slot F-5 (ref. NANU 088-97206) and was set USABLE on Jan 31 1998 (wk 0942 
   day 6) at 00:57 UT (ref. NANU 98020).

10.Station USUD was not used in the point positionning evaluation from days 
   2 to 5 due to data problems.

11.ESA solutions were not used in the Final combination due to late submission.

ORBIT COMBINATION AND EVALUATION STATISTICS:

For a complete description of tables and statistics, please refer to the report
posted on CDDIS (IGS09417.SUM).

Table 1: Week 0941 summary.                       (Jan 18, 1998 - Jan 24, 1998)

Table 1.0941.a   GPS week: 0941   MJD: 50831.0-50837.0

         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  73 | .00  .00 -.01  -.19   .05   .08  -.1  .05  .04 |    1.3   -2.1     .5
        | .00  .00  .00   .08   .08   .12   .1           |    7.3   13.3
emr  28 |-.01  .01 -.01   .34  -.30   .50   .0  .12  .11 | 6593.2  101.1     .2
        | .01  .01  .01   .17   .24   .45   .2           |  217.2    5.9
gfz  60 | .00 -.01  .02   .05   .21  -.18  -.1  .06  .05 |    1.3   -1.1     .3
        | .00  .00  .00   .12   .09   .09   .1           |    6.3    9.9
igr  n/a|-.01 -.02 -.01   .59   .43  -.32   .0  .10  .07 |    -.1     .3     .4
        | .00  .01  .01   .13   .31   .47   .1           |    1.1    2.3
jpl  37 | .01  .00  .00  -.01  -.21   .04   .3  .04  .04 |  -35.6   -1.9     .1
        | .00  .00  .00   .11   .18   .11   .0           |    5.6    7.5
ngs  46 |-.01 -.05 -.02   .82   .92  -.09  -.1  .19  .19 |    1.4   -4.6   80.7
        | .01  .01  .03   .69   .70   .47   .2           |    4.9    9.5
sio  96 | .00  .00  .00   .00   .20  -.25  -.3  .09  .08 |     .0     .0     .0
        | .01  .00  .01   .06   .11   .20   .3           |     .0     .0

Table 1.0941.b   GPS week : 0941   MJD: 50831.0-50837.0

         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   2   3   3   3   3   3 |
   2  |   2   3   2   2   2   3   3 |
   3E |   4   4   3   3   3   4   3 |
   4  |   2   2   2   2   2   3   4 |
   5  |   2   2   2   2   3   3   2 |
   6E |   4   4   4   4   4   4   4 |
   7E |   2   3   3   4   3   3   4 |
   8  |   4   4   4   5 --- ---   7 | Maneuver on day 4-5. See Remark 6.
   9  |   2   3   2   2   2   2   3 |
  10  |   3   3   3   4   3   4   3 |
  13  |   5   5   6   5   5   5   5 |
  14  |   3   4   6   4   7   4   3 |
  15  |   2   2   2   3   3   3   2 |
  16E |   4   3   3  19   3  20 --- | Modeling prob.(d3,5);Maneuver(d6);See Rem. 6.
  17  |   3   2   2   3   3   3   3 |
  18  |   2   3   3   3   3   5   3 |
  19  |   2   3   3   3   4   4   3 |
  21  |   3   3   2   2   3   3   3 |
  22  |   3   3   2   2   2   3   2 |
  23E |   3   3   2   3   3   3   3 |
  24  |   2   3   2   3   3   3   3 |
  25  |   2   2   2   2   2   3   3 |
  26  |   2   3   3   7   4   4   5 |
  27  |   2   2   2   2   3   3   3 |
  29  |   2   2   2   2   2   2   3 |
  30  |   2   2   2   3   2   3   2 |
  31E |   4   4   3   4   3   4   4 |

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

Table 2.0941.0   GPS week: 0941   Day: 0   MJD: 50831.0

CENT STA|  DX   DY   DZ    RX    RY    RZ  SCL  RMS WRMS |   TOFT  TDRFT    RMS
--------|------------------------------------------------|---------------------
cod  86 | .00  .01  .00  -.20   .00   .10  -.2  .04  .04 |   -7.3   11.4     .3
emr  29 | .01 -.01 -.01   .29  -.38   .60  -.1  .10  .10 | 6292.0  106.5     .2
gfz  60 | .00 -.01  .01  -.09   .24  -.29  -.1  .05  .05 |   -6.1    5.9     .4
igr  n/a|-.01 -.01 -.01   .65  -.05   .17   .0  .06  .06 |    1.0   -3.5     .4
jpl  37 | .00  .01 -.01   .12  -.18   .04   .2  .03  .03 |  -29.3    4.8     .1
ngs  55 | .00 -.05  .04   .16   .14   .18   .1  .17  .16 |    -.6   -1.8   80.3
sio  103| .00  .00  .00   .01   .20  -.26   .2  .08  .06 |     .0     .0     .0

Table 2.0941.1   GPS week: 0941   Day: 1   MJD: 50832.0

CENT STA|  DX   DY   DZ    RX    RY    RZ  SCL  RMS WRMS |   TOFT  TDRFT    RMS
--------|------------------------------------------------|---------------------
cod  80 | .00  .00 -.01  -.29   .03   .15  -.2  .05  .04 |   -5.7   11.7     .4
emr  33 |-.01  .02 -.02   .43  -.11   .28   .1  .10  .11 | 6393.1  105.7     .3
gfz  59 | .00  .00  .02   .02   .28  -.11  -.1  .05  .05 |   -1.9    5.6     .4
igr  n/a|-.01 -.02 -.03   .42   .74  -.21   .0  .08  .07 |   -1.2    3.8     .4
jpl  37 | .01  .01  .00   .03  -.27  -.03   .3  .03  .03 |  -29.3    3.4     .1
ngs  50 |-.01 -.05  .00  -.10   .04   .40  -.5  .15  .14 |    -.8    -.6   83.5
sio  97 | .00  .01  .00   .05   .14  -.41  -.2  .07  .07 |     .0     .0     .0

Table 2.0941.2   GPS week: 0941   Day: 2   MJD: 50833.0

CENT STA|  DX   DY   DZ    RX    RY    RZ  SCL  RMS WRMS |   TOFT  TDRFT    RMS
--------|------------------------------------------------|---------------------
cod  62 | .00  .00 -.01  -.24  -.01   .01  -.1  .05  .04 |   -2.4    6.0     .5
emr  30 |-.01  .00  .00   .38  -.19   .55   .0  .10  .09 | 6492.0  107.0     .2
gfz  62 | .00  .00  .02   .16   .24  -.05  -.2  .06  .06 |   -2.3    4.6     .4
igr  n/a|-.01 -.01 -.01   .58   .80   .04   .0  .14  .08 |     .2     .0     .4
jpl  37 | .01  .00 -.01  -.03  -.14   .01   .2  .03  .03 |  -33.3    5.7     .1
ngs  45 | .00 -.04 -.06   .44  1.66   .12  -.2  .22  .22 |     .5     .1   78.8
sio  95 | .00  .00  .00   .05   .21  -.31   .1  .06  .05 |     .0     .0     .0

Table 2.0941.3   GPS week: 0941   Day: 3   MJD: 50834.0

CENT STA|  DX   DY   DZ    RX    RY    RZ  SCL  RMS WRMS |   TOFT  TDRFT    RMS
--------|------------------------------------------------|---------------------
cod  72 |-.01  .00  .00  -.24  -.04  -.08  -.1  .06  .03 |   13.4  -24.0     .4
emr  27 |-.01  .01 -.01   .32  -.76  -.13  -.3  .15  .12 | 6590.1   97.4     .2
gfz  59 | .00 -.01  .01   .23   .13  -.15  -.1  .06  .06 |   13.7  -19.7     .4
igr  n/a|-.01 -.01 -.01   .41   .31  -.71  -.1  .09  .05 |     .4     .5     .4
jpl  37 | .01  .00  .00   .04   .12   .25   .2  .05  .05 |  -37.5   -4.0     .1
ngs  43 |-.01 -.04 -.03   .99  1.06  -.37  -.2  .22  .20 |   -1.3   -3.0   82.4
sio  88 | .00  .00  .00  -.10   .04  -.20  -.4  .11  .07 |     .0     .0     .0

Table 2.0941.4   GPS week: 0941   Day: 4   MJD: 50835.0

CENT STA|  DX   DY   DZ    RX    RY    RZ  SCL  RMS WRMS |   TOFT  TDRFT    RMS
--------|------------------------------------------------|---------------------
cod  72 | .00  .00  .00  -.04   .15  -.03  -.2  .05  .04 |    3.9   -5.3     .6
emr  26 | .00  .02  .01   .03  -.25  1.35   .3  .15  .13 | 6694.9  100.8     .2
gfz  60 | .00 -.01  .02   .10   .15  -.28  -.2  .06  .06 |    3.0   -3.0     .3
igr  n/a| .00 -.03 -.01   .75   .57  -.05   .1  .09  .07 |   -1.2     .8     .3
jpl  37 | .00  .00  .00  -.09  -.29   .05   .3  .03  .03 |  -36.1   -2.0     .1
ngs  44 | .01 -.04  .01  1.53  1.75   .31  -.2  .18  .18 |    -.1    -.9   80.4
sio  98 | .00  .00  .00   .04   .16  -.10  -.3  .07  .07 |     .0     .0     .0

Table 2.0941.5   GPS week: 0941   Day: 5   MJD: 50836.0

CENT STA|  DX   DY   DZ    RX    RY    RZ  SCL  RMS WRMS |   TOFT  TDRFT    RMS
--------|------------------------------------------------|---------------------
cod  72 | .00  .01  .00  -.14   .08   .26  -.1  .07  .04 |    6.4  -13.5     .5
emr  27 |-.01  .01 -.01   .31  -.42   .49  -.2  .11  .11 | 6796.1   91.0     .2
gfz  60 | .00 -.01  .01   .01   .12  -.19   .0  .05  .05 |    2.9   -8.4     .2
igr  n/a|-.01 -.02 -.01   .67   .13 -1.16   .0  .13  .07 |   -1.1    1.7     .4
jpl  37 | .01  .00  .00  -.19  -.27   .04   .3  .07  .07 |  -38.1  -15.9     .1
ngs  48 |-.02 -.06 -.04   .91   .54  -.46   .1  .19  .19 |   12.5  -26.0   79.2
sio  101| .01  .00  .00  -.05   .21  -.54  -.8  .11  .10 |     .0     .0     .0

Table 2.0941.6   GPS week: 0941   Day: 6   MJD: 50837.0

CENT STA|  DX   DY   DZ    RX    RY    RZ  SCL  RMS WRMS |   TOFT  TDRFT    RMS
--------|------------------------------------------------|---------------------
cod  64 |-.01  .00 -.01  -.22   .16   .18  -.1  .04  .04 |     .7   -1.1     .4
emr  27 |-.01 -.01  .00   .59  -.02   .36  -.1  .12  .12 | 6894.0   99.4     .2
gfz  59 | .00 -.01  .02  -.07   .34  -.17  -.1  .06  .06 |    -.1    6.8     .3
igr  n/a|-.01 -.03  .00   .67   .50  -.33  -.1  .08  .07 |    1.2   -1.1     .5
jpl  37 | .01  .00  .00   .08  -.46  -.11   .3  .04  .04 |  -45.4   -5.2     .1
ngs  39 |-.03 -.06 -.05  1.79  1.28  -.84   .1  .20  .20 |    -.4    -.1   80.2
sio  87 | .02  .00 -.01   .01   .40   .06  -.5  .13  .12 |     .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" stands for  eclipsing satellites.
         "T" stands for Total long arc orbit RMS for all satellites.
         "NE" stands for long arc orbit RMS for Non-Eclipsing satellites only.
         "MEDI","MD" stands for median of the centre's satellite RMS.

         Units: cm.

Table 3.0941.0   GPS week: 0941   Day: 0   MJD: 50831.0

               Weighted Average                Orbit Dynamics (7 days)
 PRN  | cod emr gfz igr jpl ngs sio  IGS |  cod emr gfz igr jpl ngs sio  IGS
------|----------------------------------|----------------------------------
   1  |   3  11   6   6   3  24   8    3 |    4  10   4   7   5  17   6    4
   2  |   3   8   2   2   3  11   7    2 |    5   9   5   6   6  16   6    4
   3E |   3  11   4   7   3  37  12    4 |    3  11   6  10   5  20   9    3
   4  |   4  10   4   7   2  15   6    2 |    4   8   4   8   3  16   6    3
   5  |   2   7   4   5   2   9   8    2 |    3   7   4   5   4  11   9    3
   6E |   4  19   4   8   6  14   7    4 |    6  13   7  11   7  17  10    6
   7E |   2   8   4   7   2  19   6    2 |    8  10  10  13   7  18  10    9
   8  |   7  10   7   7 ---  10   7    4 |    4   6   5   4 ---   6   4    3
   9  |   2   6   5   5   3   7   5    2 |    9  11   9  10   6  16   8    9
  10  |   6  10   6   7   3  15   7    3 |    5  11   8  11   8  17   7    7
  13  |   5 ---   7   8 ---  11  13    5 |    5 ---   7  10 ---  14  11    6
  14  |   4  14   4   6   4  20   9    3 |  --- --- --- --- --- --- ---  ---
  15  |   2   5   5   5   4  15   4    2 |    4   5   3   5   3  11   4    2
  16E |   3  15   6   8   3  20  11    4 |    5  11   4   9   5  18   5    4
  17  |   4   9   5   6   3  17   5    3 |    4   8   4   6   2  13   4    3
  18  |   2   7   5   6   2  13   9    2 |    5   8   5   7   7  13   8    5
  19  |   5   9   7   4   3   8   5    2 |    7   9   9   9   8   9   9    7
  21  |   6  10   7   7   3  22   8    3 |    5   9   4   7   4  19   8    5
  22  |   4   8   4   6   3  18   5    3 |    4  10   5   6   5  18   6    3
  23E |   4   8   6   5   5  13   7    3 |   14  15  17  13  15  15  14   15
  24  |   3  11   4   6   2  14   6    2 |   13  20  14  14  13  18  12   15
  25  |   3   7   5   4   3   9   3    2 |    5   5   6   8   5  10   5    4
  26  |   2   7   3   5   3  10   6    2 |    4   8   5   5   5  12  10    4
  27  |   4   6   5   4   3  12   5    2 |    4   9   8   8   6  13   5    5
  29  |   2   9   3   3   3  15   7    2 |    5  11   5   7   5  15   7    4
  30  |   2   7   3   7   2   9   4    2 |    4   7   5   6   5  11   5    4
  31E |   3  11   5  10   4  25  13    4 |   16  19  16  18  18  24  18   15
------|----------------------------------|----------------------------------
 RMS  |   4  10   5   6   3  17   8      |T   6  10   7   9   7  15   8    6
 WRMS |   4  10   5   6   3  16   6      |NE  5   9   6   7   6  14   7    5
 MEDI |   3   9   5   6   3  14   7      |MD  5   9   5   8   5  16   8    4

Table 3.0941.1   GPS week: 0941   Day: 1   MJD: 50832.0

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

Table 3.0941.2   GPS week: 0941   Day: 2   MJD: 50833.0

               Weighted Average                Orbit Dynamics (7 days)
 PRN  | cod emr gfz igr jpl ngs sio  IGS |  cod emr gfz igr jpl ngs sio  IGS
------|----------------------------------|----------------------------------
   1  |   5   9   4   5   3  13   7    3 |    5  10   4   6   6  13   9    4
   2  |   5   6   5   6   3  24   8    2 |    6   8   7   5   3  17   7    4
   3E |   3  12   8  15   4  30   9    3 |    3  12   7  14   7  31  10    3
   4  |   3   8   4   6   3  16   5    2 |    3   8   4   7   5  21   5    3
   5  |   3   4   6   6   3  15   5    2 |    3   4   3   6   3  13   6    2
   6E |   3  13   5   9   5  25  13    4 |    4  13   6   8   6  21  13    5
   7E |   3  13   7   8   3  24   5    3 |    7  15   9  13   6  28   9    7
   8  |   7  10   6   6 ---  15   4    4 |    4   6   4   5 ---   9   5    3
   9  |   2   6   4   5   2  11   7    2 |    7   8   7   9   6  14   6    7
  10  |   6   8   7   7   3  13   6    3 |    3  10   5   9   5  15   8    4
  13  |   6 ---   8   6 ---  15  10    6 |    8 ---   8  11 ---  13  11    8
  14  |  15  14 ---  57   6 ---   9    6 |  --- --- --- --- --- --- ---  ---
  15  |   4   8   4   8   2  28   5    2 |    3   9   5   8   4  24   7    3
  16E |   4  13   5  22   2  39   5    3 |    3  10   5  15   4  20   5    3
  17  |   4   8   4   7   2  23   4    2 |    3   8   5   6   3  19   6    3
  18  |   4  12   6   6   3  25   6    3 |    6   7   6   7   6  22   6    4
  19  |   4  12   7   5   3  13   5    3 |    5  10   7   8   7  13   9    6
  21  |   4   7   5   6   3  27   7    2 |    4   8   6   6   4  22   9    4
  22  |   3   9   6   7   3  34   6    2 |    4  10   4   5   4  30   7    3
  23  |   5   7   6   6   3  19   4    2 |   25  26  26  23  24  32  25   25
  24  |   4  11   5   6   2  21   4    2 |    8  15   7   9   7  12   8    8
  25  |   4   7   6   9   2  16   5    2 |    4   5   7   7   7  15   6    5
  26  |   4   8   7   9   4  16   5    3 |    5  12   7   8   4  12   7    5
  27  |   3   7   4   4   2  10   6    2 |    4   6   4   5   5  13   5    4
  29  |   6   8   6   7   3  20   4    2 |   11  14   7  10  12  23  10   10
  30  |   3   6   4   6   3  12   7    2 |    3   6   4   4   4  11   9    3
  31E |   3  13   6  10   3  36   4    3 |   11  11  12  13  10  25  10   10
------|----------------------------------|----------------------------------
 RMS  |   5  10   6  14   3  22   6      |T   7  10   8   9   7  19   9    7
 WRMS |   4   9   6   8   3  22   5      |NE  7  10   7   8   7  18   9    7
 MEDI |   4   8   6   6   3  20   5      |MD  4  10   6   8   6  18   8    4

Table 3.0941.3   GPS week: 0941   Day: 3   MJD: 50834.0

               Weighted Average                Orbit Dynamics (7 days)
 PRN  | cod emr gfz igr jpl ngs sio  IGS |  cod emr gfz igr jpl ngs sio  IGS
------|----------------------------------|----------------------------------
   1  |   3  16   5   5   2  16   7    3 |    4  14   5   4   5  15  10    5
   2  |   3  10   3   5   2  16   7    2 |    4  13   4   5   4  13   9    5
   3E |   3  11   6   7   4  34  10    3 |    2  11   9   7   5  32   8    4
   4  |   3   9   4   5   3  31   6    2 |    4  13   6   7   4  34   6    4
   5  |   2   7   5   4   2   7   8    2 |    3   9   4   4   3   9   7    4
   6E |   4  18   7   6   5  27  13    4 |    5  18   8   7   5  18  12    5
   7E |   3  19   7   5   2  16   9    4 |    8  18   9  10   7  18  11    9
   8  |   8  13   9   8 ---  14  10    5 |    5   9   6   5 ---   9   5    4
   9  |   2   5   4   5   3  11   7    2 |    6   9   6   7   5  14   7    6
  10  |   4  16  11   6   4  19   7    4 |    3  12   5   6   4  20   8    4
  13  |   5 ---   5   8 ---  17  13    5 |    8 ---   9  10 ---  16  12    8
  14  |   7  16   5   8   2  27  12    4 |  --- --- --- --- --- --- ---  ---
  15  |   3  10   6   5   4  24  10    3 |    4   9   6   6   4  19   7    3
  16  |  27 --- ---  33  21 ---  35   19 |   67 --- ---  58  67 ---  75   65
  17  |   3  18   3   5   2  12  11    3 |    3  15   4   4   4  16  10    4
  18  |   3  15  10  10   3  31   6    3 |    8  12   5  10   6  30   9    7
  19  |   3  12   5   5   2  19   7    3 |    7  10  10  14   9  17  15    9
  21  |   2  10   5   4   3  16   5    2 |    4  11   5   6   3  16   6    5
  22  |   3  10   4   5   3  21   7    2 |    4   9   4   6   3  24   5    4
  23  |   4   7   6   9   4  18   8    3 |   10  11  13  10  12  12  11   11
  24  |   3  10   8   3   4  13   6    3 |   11  13  11  13  10  15  11   11
  25  |   3   8   3   4   3  17   6    2 |    4   9   5   5   5  18   5    5
  26  |   5  45   4   5   7  21   6    7 |    4  42   6   6   5  18   6    6
  27  |   2  10   6   4   2   9   5    2 |    3   9   8   5   5  10   6    5
  29  |   3   8   3   4   3   9   6    2 |    7  11   8   8   7  12   8    8
  30  |   2   9   6   4   3  13   9    3 |    4  11   6   6   4  12   7    4
  31E |   6  20   7   7   4  51  11    4 |   14  14  15  15  14  32  20   14
------|----------------------------------|----------------------------------
 RMS  |   6  15   6   9   5  22  11      |T  14  14   7  13  15  19  17   14
 WRMS |   3  12   6   5   5  20   7      |NE 15  14   6  14  16  17  18   14
 MEDI |   3  10   5   5   3  17   7      |MD  4  11   6   7   5  16   8    5

Table 3.0941.4   GPS week: 0941   Day: 4   MJD: 50835.0

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

Table 3.0941.5   GPS week: 0941   Day: 5   MJD: 50836.0

               Weighted Average                Orbit Dynamics (7 days)
 PRN  | cod emr gfz igr jpl ngs sio  IGS |  cod emr gfz igr jpl ngs sio  IGS
------|----------------------------------|----------------------------------
   1  |   4   9   4   4   3  25   6    3 |    5   8   5   7   4  19   9    3
   2  |   5   6   4   7   6  13  13    3 |    3   7   4  10   4  12  11    4
   3E |   5  11   6   7   4  21  10    4 |    3  10   6   8   4  24   8    4
   4  |   4   9   3   6   5  23   7    3 |    3  12   5  11   4  27  11    5
   5  |   4   7   6   5   4   8  11    3 |    3   7   4   8   3  13  12    4
   6E |   5  20   6   8   6  14  12    4 |    6  20   8   9   7  17  13    6
   7E |   5  11   4   7   4  15  10    3 |    6  14   7  11   6  17   8    6
   9  |   3   6   3   4   2   9  12    2 |    6   9   6   7   5  11  12    6
  10  |   3  12   7   6   6  26   8    4 |    3  12   5   9   5  24   8    4
  13  |   7 ---   5  14 ---  16  14    5 |    4 ---   7  18 ---  19  13    6
  14  |   5  15   6  11   4  28   8    4 |  --- --- --- --- --- --- ---  ---
  15  |   5  10   5   7   4  17  10    3 |   15  17  15  16  16  21  14   15
  16  |  31 --- ---  59  28 ---  21   20 |    0 --- ---   0   0 ---   0  ---
  17  |   4  11   4   6   3  22   8    3 |    3  12   4   9   3  20  10    5
  18  |   3  16   7  14   5  33  18    5 |    5   8   6  12   8  35  17    6
  19  |   4  17   6   5   4   8  13    4 |   12  13  14  18  14  19  26   15
  21  |   5   6   5   3   4  20   8    3 |    4  11   7   9   6  21  12    6
  22  |   4  11   4   5   4  11  10    3 |    4  10   6   7   4  10   8    3
  23  |   6  13   5   7   4  13   8    3 |    9  17  11  10  11  12  13   11
  24  |   4   7   6   5   4  13   8    3 |   12  13  11  13  12  18  13   12
  25  |   5   7   5   6   4  13   9    3 |    3   7   4   6   7  15  10    5
  26  |   5  16   3   4   4  18  13    4 |    4  14   5   9   6  17  13    5
  27  |   4  13   5   5   4  15   8    3 |    4   9   6   9   6  15   9    5
  29  |   3   5   3   5   3  17   7    2 |    5   6   4   7   5  13  10    5
  30  |   2   6   5   5   4  11  11    3 |    2   6   4   7   4   9  12    4
  31E |   4   9   7   8   5  28  13    4 |   18  19  17  18  16  35  21   17
------|----------------------------------|----------------------------------
 RMS  |   7  11   5  13   7  19  11      |T   7  12   8  10   7  19  12    7
 WRMS |   4  11   5   7   7  19  10      |NE  6  10   7  10   7  18  12    7
 MEDI |   4  11   5   6   4  16  10      |MD  4  11   6   9   6  18  12    5

Table 3.0941.6   GPS week: 0941   Day: 6   MJD: 50837.0

               Weighted Average                Orbit Dynamics (7 days)
 PRN  | cod emr gfz igr jpl ngs sio  IGS |  cod emr gfz igr jpl ngs sio  IGS
------|----------------------------------|----------------------------------
   1  |   3  13   4   8   2  17  13    3 |    5  10   6   9   5  20  15    5
   2  |   3  11   6   8   3  18  12    3 |    4   8   4   6   5  14   9    4
   3E |   4  14   6  14   4  38  11    3 |    4  11   7  10   5  35   8    4
   4  |   2  17   7   5   3  17  16    4 |    4  12   4   6   3  15  12    3
   5  |   4   8   5   7   2   8  11    2 |    3   5   4   6   5   9  13    3
   6E |   6  14   8   5   5  16  13    4 |    7  13   8   7   7  17  11    6
   7E |   3  17   7   5   3  21  16    4 |   12  15  15  14  12  22  12   12
   8  |   8 ---   9  12 ---  15  20    7 |    2 ---   1   1 ---   2   3    1
   9  |   4   9   5   5   3  12  15    3 |    7  10   8  10   6  12  15    7
  10  |   4  10   7   9   6  25  14    3 |    4  11   6   8   5  23  12    4
  13  |   6 ---   6  11 ---  12  16    5 |    7 ---   7  12 ---  13  16    6
  14  |   6  12   5  12   3  29  16    3 |  --- --- --- --- --- --- ---  ---
  15  |   2  10   4   7   2  16  11    2 |   16  16  16  15  16  18  14   15
  17  |   3  17   5   5   4  26  10    3 |    3  15   4   5   4  16   7    3
  18  |   3   9   6   7   4  14  16    3 |    5  11   5   8   4  19  12    4
  19  |   6  11   5   4   4  11   9    3 |    9  15  10  14  14  12  17   11
  21  |   5   8   4   5   3  22  14    3 |    6  10   5   8   4  20  14    6
  22  |   3  10   4   6   2  15   8    2 |    5  10   4   7   4  15   8    4
  23  |   4   9   5   5   3  25  12    3 |   10  11  11   9  11  28  12   10
  24  |   4   8   7   5   4  22  12    3 |    7  10   6   7   5  14  11    5
  25  |   5   8   5   4   3  10  10    3 |    5  12   8   6   7  16   9    6
  26  |   4  24   4   9   4  14  15    5 |    5  17   6  10   6  13  14    5
  27  |   4  10   5   5   2  10  11    3 |    4  12   6   8   6  10  11    5
  29  |   4  13   4   7   2  11   8    3 |    5  12   5   6   4  16   8    4
  30  |   3   7   4   6   3  18  10    2 |    3   6   5   6   4  15  12    3
  31E |   4  11   5   8   5  37  19    4 |   20  20  22  20  19  40  30   20
------|----------------------------------|----------------------------------
 RMS  |   4  12   6   8   4  20  13      |T   7  12   8   9   8  19  13    7
 WRMS |   4  12   6   7   4  20  12      |NE  6  11   6   8   7  16  12    6
 MEDI |   4  11   5   7   3  17  13      |MD  5  11   6   8   5  16  12    5

Table 4: Precise Navigation Summary.

         Weekly station RMS w.r.t. the initial coordinates for the Latitude,
         Longitude and Height components.  See Table 5 for the daily summary.

         CLK  - Satellite clocks used.
         EPO  - Mean number of satellite clock epochs available in the daily
                solutions.
	 U    - Station Used in centre's solution (at least one day).
         Units: centimetres.

Table 4.0941   GPS week: 0941   MJD: 50831.0-50837.0

CENT| CLK EPO  |      BRUS      |      USUD      |      WILL      |
----|----------|----------------|----------------|----------------|
cod | cod 2546 |U  41   31   87 |   34   32   89 |   26   16   39 |
emr | emr 2352 |   43   31   88 |U  35   31   85 |   25   16   37 |
gfz | gfz 1229 |   41   35   96 |   40   33  100 |   28   20   45 |
igr | igr 2469 |   43   31   88 |   41   34   91 |   27   17   41 |
igs | igs 2550 |   41   31   88 |   36   32   90 |   25   16   38 |
jpl | jpl 2366 |U  45   31   87 |   34   31   86 |   26   15   39 |

Table 5: Daily Precise Navigation Summary using the corresponding Centre orbit 
         positions and satellite clock corrections at 15 min intervals.

         Each line gives the daily station RMS w.r.t. the initial coordinates 
         for the Latitude, Longitude and Height components.
         
         CLK  - Satellite clocks used.
         EPO  - Number of satellite clock epochs available for that day.
         Units: centimetres.

Table 5.0941.0   GPS week: 0941   Day: 0   MJD: 50831.0

CENT| CLK EPO  |      BRUS      |      USUD      |      WILL      |
----|----------|----------------|----------------|----------------|
cod | cod 2591 |   39   25   69 |   34   37  103 |   22   14   31 |
emr | emr 2489 |   40   25   70 |   34   38  100 |   23   15   32 |
gfz | gfz 1271 |   39   27   68 |   34   34  123 |   25   20   38 |
igr | igr 2589 |   39   27   72 |   46   43  105 |   22   15   31 |
igs | igs 2592 |   39   25   70 |   35   38  103 |   22   15   31 |
jpl | jpl 2373 |   41   26   69 |   30   36  103 |   23   14   36 |

Table 5.0941.1   GPS week: 0941   Day: 1   MJD: 50832.0

CENT| CLK EPO  |      BRUS      |      USUD      |      WILL      |
----|----------|----------------|----------------|----------------|
cod | cod 2592 |   41   26   76 |   33   31   82 |   20   20   44 |
emr | emr 2479 |   47   26   82 |   38   28   79 |   21   21   47 |
gfz | gfz 1282 |   43   27   84 |   40   36   86 |   23   26   52 |
igr | igr 2499 |   44   25   81 |   39   28   82 |   22   21   46 |
igs | igs 2592 |   43   24   78 |   35   28   82 |   21   21   44 |
jpl | jpl 2382 |   48   25   77 |   39   30   77 |   22   20   44 |

Table 5.0941.2   GPS week: 0941   Day: 2   MJD: 50833.0

CENT| CLK EPO  |      BRUS      |      USUD      |      WILL      |
----|----------|----------------|----------------|----------------|
cod | cod 2583 |   50   45   96 |    0    0    0 |   28   15   45 |
emr | emr 2489 |   52   46  101 |    0    0    0 |   27   15   42 |
gfz | gfz 1221 |   54   55  108 |    0    0    0 |   32   21   60 |
igr | igr 2493 |   50   47   99 |    0    0    0 |   28   15   47 |
igs | igs 2589 |   50   46   98 |    0    0    0 |   28   15   44 |
jpl | jpl 2379 |   61   48   96 |    0    0    0 |   28   14   46 |

Table 5.0941.3   GPS week: 0941   Day: 3   MJD: 50834.0

CENT| CLK EPO  |      BRUS      |      USUD      |      WILL      |
----|----------|----------------|----------------|----------------|
cod | cod 2585 |   36   37   81 |    0    0    0 |   28   16   34 |
emr | emr 2283 |   35   37   84 |    0    0    0 |   24   17   33 |
gfz | gfz 1210 |   34   28   76 |    0    0    0 |   25   18   35 |
igr | igr 2499 |   40   36   83 |    0    0    0 |   27   20   37 |
igs | igs 2590 |   37   36   79 |    0    0    0 |   26   16   33 |
jpl | jpl 2380 |   42   37   82 |    0    0    0 |   26   16   31 |

Table 5.0941.4   GPS week: 0941   Day: 4   MJD: 50835.0

CENT| CLK EPO  |      BRUS      |      USUD      |      WILL      |
----|----------|----------------|----------------|----------------|
cod | cod 2492 |   37   21   69 |    0    0    0 |   26   15   37 |
emr | emr 2368 |   40   21   69 |    0    0    0 |   27   16   30 |
gfz | gfz 1191 |   30   25   72 |    0    0    0 |   28   17   42 |
igr | igr 2426 |   38   21   70 |    0    0    0 |   27   16   32 |
igs | igs 2495 |   37   21   69 |    0    0    0 |   26   15   32 |
jpl | jpl 2381 |   38   21   67 |    0    0    0 |   26   14   33 |

Table 5.0941.5   GPS week: 0941   Day: 5   MJD: 50836.0

CENT| CLK EPO  |      BRUS      |      USUD      |      WILL      |
----|----------|----------------|----------------|----------------|
cod | cod 2496 |   46   25  101 |    0    0    0 |   25   14   37 |
emr | emr 2187 |   47   28   90 |    0    0    0 |   27   13   33 |
gfz | gfz 1192 |   47   37  103 |    0    0    0 |   28   15   37 |
igr | igr 2381 |   51   28   91 |    0    0    0 |   28   14   39 |
igs | igs 2496 |   46   25  101 |    0    0    0 |   25   12   33 |
jpl | jpl 2384 |   49   25   99 |    0    0    0 |   26   12   36 |

Table 5.0941.6   GPS week: 0941   Day: 6   MJD: 50837.0

CENT| CLK EPO  |      BRUS      |      USUD      |      WILL      |
----|----------|----------------|----------------|----------------|
cod | cod 2485 |   33   31  110 |   36   28   80 |   28   15   44 |
emr | emr 2172 |   34   28  113 |   34   26   72 |   25   15   37 |
gfz | gfz 1239 |   34   32  139 |   46   28   87 |   31   18   47 |
igr | igr 2396 |   35   27  112 |   38   28   83 |   31   17   49 |
igs | igs 2495 |   33   28  111 |   37   28   82 |   28   16   45 |
jpl | jpl 2281 |   34   30  112 |   33   25   74 |   28   15   42 |

Table 6: Earth Orientation Parameters weekly summary.                          
                                                                               
         Weekly mean and standard deviation of Centre ERP, ERP rates and       
         LOD differences with respect to IGS combined values. See Table 7 for  
         the daily summaries.                                                  
                                                                               
         Xpole,Xrt: x pole and x pole rate (10**-5")                           
         Ypole,Yrt: y pole and y pole rate (10**-5"/day)                       
         LOD: Length Of Day (us)                                               
                                                                               
         AC LOD BIAS: 21-day mean LOD bias with respect to Bulletin A (us)     
         AC LOD BIAS RMS: RMS of AC LOD BIAS (us)                              
                                                                               
         FLAG: "u" (used), "x" (excluded), "-" (no submission)                 
               for Xpole, Ypole, Xrt, Yrt and LOD                              

Table 6.0941   GPS week: 0941   MJD: 50831.5-50837.5
                                                     AC LOD   AC LOD
CENT  FLAG  |  Xpole  Ypole    Xrt    Yrt    LOD |    BIAS  BIAS RMS  
------------------------------------------------------------------------
cod   uuuuu |    -10     23     -6    -10     16 |     -15     23
            |      8      9      9      9     11 |       1
emr   uuuuu |     40    -37    140     -7    -26 |     -15     49
            |     27     14    101     34     47 |       4
gfz   uuuuu |    -16     -6     -8      9     -3 |      -8     27
            |     10     14     15     19      9 |       5
igr   xxxxx |    -38    -65      7    -51    -19 |      -5     26
            |     31     15     21     42     16 |       5
jpl   uuuuu |     26      2    -19     14    -15 |     -46     55
            |     18      8     18     13     26 |       4
ngs   uuuuu |   -104    -88    136   -153     38 |     -14     57
            |     64     76    128    158     76 |       4
sio   uuuuu |    -45     -6    -21    -11    -17 |       4     45
            |     32     12     26     15     34 |       3
                                                                               
Table 7: Earth Orientation Parameters daily summary.                           
                                                                               
         Daily Centre ERP, ERP Rates and LOD differences with respect to       
         IGS combined values.                                                  
                                                                               
         Xpole,Xrt: x pole and x pole rate (10**-5")                           
         Ypole,Yrt: y pole and y pole rate (10**-5"/day)                       
         LOD: Length Of Day (us)                                               
                                                                               
         AC LOD BIAS: 21-day mean LOD bias with respect to Bulletin A (us)     
         AC LOD BIAS RMS: RMS of AC LOD BIAS (us)                              
                                                                               
         FLAG: "u" (used), "x" (excluded), "-" (no submission)                 
               for Xpole, Ypole, Xrt, Yrt and LOD                              

Table 7.0941.0   GPS week: 0941   Day: 0   MJD: 50831.5
                                                     AC LOD   AC LOD
CENT  FLAG  |  Xpole  Ypole    Xrt    Yrt    LOD |    BIAS  BIAS RMS  
------------------------------------------------------------------------
cod   uuuuu |     -8     27      1     -9     17 |     -13     21
emr   uuuuu |     53    -34     86     -4     43 |     -10     44
gfz   uuuuu |    -16      5    -13     11    -16 |       0     28
igr   xxxxx |     -1    -72      6    -50     -1 |       1     22
jpl   uuuuu |     19     -8    -22     31    -51 |     -39     46
ngs   uuuuu |    -27    -32     -1    -86    -16 |     -14     53
sio   uuuuu |    -31     -9      9    -42    -18 |       9     43

Table 7.0941.1   GPS week: 0941   Day: 1   MJD: 50832.5
                                                     AC LOD   AC LOD
CENT  FLAG  |  Xpole  Ypole    Xrt    Yrt    LOD |    BIAS  BIAS RMS  
------------------------------------------------------------------------
cod   uuuuu |     -7     31    -17      7     16 |     -15     22
emr   uuuuu |     26    -56    137    -33    -29 |     -10     44
gfz   uuuuu |    -20      5      9     24     -4 |      -4     26
igr   xxxxx |    -71    -45     -1    -60    -24 |       0     21
jpl   uuuuu |     32      0    -40     23    -31 |     -43     51
ngs   uuuuu |    -46     13     45   -192     13 |     -17     53
sio   uuuuu |    -30    -23    -11      2    -14 |       6     43

Table 7.0941.2   GPS week: 0941   Day: 2   MJD: 50833.5
                                                     AC LOD   AC LOD
CENT  FLAG  |  Xpole  Ypole    Xrt    Yrt    LOD |    BIAS  BIAS RMS  
------------------------------------------------------------------------
cod   uuuuu |     -5     28      3    -17     12 |     -16     23
emr   uuuuu |     -2    -23     77    -26    -47 |     -12     46
gfz   uuuuu |    -21    -15     -6     -2     14 |      -7     28
igr   xxxxx |    -77    -62     -6   -101    -28 |      -3     25
jpl   uuuuu |     24      6    -21     17    -41 |     -47     56
ngs   xxxxx |   -171    -21    202   -369    160 |     -20     54
sio   uuuuu |    -24    -22      9      0    -13 |       5     44

Table 7.0941.3   GPS week: 0941   Day: 3   MJD: 50834.5
                                                     AC LOD   AC LOD
CENT  FLAG  |  Xpole  Ypole    Xrt    Yrt    LOD |    BIAS  BIAS RMS  
------------------------------------------------------------------------
cod   uuuuu |      1     31      3    -22     29 |     -17     24
emr   uuuuu |     58    -21    115     37    -56 |     -15     50
gfz   uuuuu |      2    -31     14     31      1 |      -9     28
igr   xxxxx |    -14    -44      9    -53    -16 |      -6     28
jpl   uuuuu |     -8     -2    -34     -9     12 |     -48     57
ngs   xxxxx |    -94   -123    299    -40    -46 |     -11     58
sio   uuuuu |    -16      0    -12     -1    -68 |       4     45

Table 7.0941.4   GPS week: 0941   Day: 4   MJD: 50835.5
                                                     AC LOD   AC LOD
CENT  FLAG  |  Xpole  Ypole    Xrt    Yrt    LOD |    BIAS  BIAS RMS  
------------------------------------------------------------------------
cod   uuuuu |    -22      7    -17     -9      3 |     -15     24
emr   uuuuu |     70    -37    358    -40     34 |     -20     51
gfz   uuuuu |    -15    -14    -27      6     -4 |     -11     25
igr   xxxxx |    -42    -85     -1    -97      5 |      -8     28
jpl   uuuuu |     31      8    -14     13     -1 |     -47     57
ngs   xxxxx |   -193   -177    295   -362     90 |     -17     57
sio   uuuuu |    -45     -1    -43     -9    -25 |       1     46

Table 7.0941.5   GPS week: 0941   Day: 5   MJD: 50836.5
                                                     AC LOD   AC LOD
CENT  FLAG  |  Xpole  Ypole    Xrt    Yrt    LOD |    BIAS  BIAS RMS  
------------------------------------------------------------------------
cod   uuuuu |    -16     15    -13    -13     31 |     -14     24
emr   uuuuu |     59    -32     65    -26    -84 |     -17     51
gfz   uuuuu |     -9      4    -16     22      0 |     -11     25
igr   xxxxx |     -8    -70     52     11    -30 |      -8     27
jpl   uuuuu |     35     14     16      4     -3 |     -47     57
ngs   uuuuu |    -59   -106     25      3    -24 |     -10     61
sio   uuuuu |    -60      7    -47     -9    -26 |       1     46

Table 7.0941.6   GPS week: 0941   Day: 6   MJD: 50837.5
                                                     AC LOD   AC LOD
CENT  FLAG  |  Xpole  Ypole    Xrt    Yrt    LOD |    BIAS  BIAS RMS  
------------------------------------------------------------------------
cod   uuuuu |    -15     22     -2    -10      2 |     -15     25
emr   uuuuu |     18    -55    140     43    -42 |     -20     57
gfz   uuuuu |    -30      4    -17    -26    -10 |     -15     26
igr   xxxxx |    -49    -74     -9     -8    -39 |     -12     32
jpl   uuuuu |     50     -7    -15     17     10 |     -50     60
ngs   xxxxx |   -136   -173     89    -27     86 |     -11     62
sio   uuuuu |   -109      6    -51    -17     47 |       0     46

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