[IGSREPORT-4492] Wk 0938 IGS Final Orbits

AC AC
Wed Jan 14 08:59:06 PST 1998


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IGS Electronic Report    Wed Jan 14  8:59:06 PST 1998      Message Number 4492
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Author: AC Coordinator / NRCan GSDivision
Subject: Wk 0938 IGS Final Orbits

Final IGS Orbit Combination - Week 0938   (Dec 28, 1997 - Jan 03, 1998)

Contacts: J. Kouba (kouba at geod.emr.ca)
          Y. Mireault (mireault at geod.emr.ca)

COMBINATION STRATEGY:

For a complete description of combination strategy, please refer to the report
posted on CDDIS (IGS09387.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:

 IGS09380-6.SP3  IGS GPS ephemeris files for days 0-6, week 0938 in SP3 format.
 IGS09387.ERP    Earth Rotation Parameters (ERP) and their rates as well as
                 Universal Time (UT1-UTC) and Length Of Day (LOD) associated 
                 with IGS ephemerides.
 IGS09387.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 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
                  ----+--------+---------------
                   2  |  NGS   |  18

7. 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
         ------------+----------+-------+----------+-------------------
          2 (Dec 30) | 00:00:00 |  14   |   All    | Modeling problems (a)
          3 (Dec 31) | 00:00:00 |  18   |   All    | Modeling problems (b)
          4 (Jan 01) | 00:00:00 |  24   |   All    | Modeling problems (c)
          5 (Jan 02) | 00:00:00 |  23   |   All    | Modeling problems
          6 (Jan 03) | 00:00:00 | 10,16 |   All    | Modeling problems

   (a) Satellites PRN14 was excluded from long arc evaluation on days 3-6
       for all centres due to unrealistic RMS.

   (b) Satellites PRN18 was excluded from long arc evaluation on day 2
       for all centres due to unrealistic RMS.

   (c) Satellites PRN24 was excluded from long arc evaluation on days 5-6
       for all centres due to unrealistic RMS.


8. Centre specific UT1-UTC values for NGS were not used in the long arc
   evaluation.  Smaller RMS were obtained when UT1-UTC values from Bulletin A
   were used.

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).  A Follow up NANU will be sent once the
   navigation payload on PRN13 is usable.

10.PRN08 was set USABLE on wk936 day 4 at 15:24 UT (ref. NANU 97121).

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

12.A new clock combination strategy was implemented starting this week (wk 938).
   It is based on radial orbit differences of the AC orbit solutions with 
   respect to the IGS combined orbits. The algorithm generally gives better 
   clock combination RMS and more importantly, gives a better igs orbit/clock 
   consistency.


ORBIT COMBINATION AND EVALUATION STATISTICS:

For a complete description of tables and statistics, please refer to the report
posted on CDDIS (IGS09387.SUM).


Table 1: Week 0938 summary.                       (Dec 28, 1997 - Jan 03, 1998)

Table 1.0938.a   GPS week: 0938   MJD: 50810.0-50816.0

         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  83 | .00  .01 -.01  -.45   .19   .14  -.2  .07  .04 |   -3.8    5.8     .3
        | .00  .00  .00   .10   .07   .21   .0           |    4.6   10.0
emr  30 | .00 -.01 -.01   .55  -.21   .58   .0  .12  .11 | 4406.6  124.9     .2
        | .01  .01  .01   .21   .21   .19   .1           |  267.3    7.0
gfz  54 | .00  .00  .01   .05   .02  -.09  -.1  .06  .06 |   -2.2    2.4     .5
        | .01  .00  .00   .15   .05   .38   .0           |    2.5    4.6
igr  n/a| .00 -.01  .00  -.02   .08  -.13  -.1  .11  .06 |    -.3     .6     .5
        | .00  .01  .00   .22   .12   .13   .1           |     .6    1.9
jpl  37 | .00  .01 -.01   .06  -.16   .02   .2  .06  .06 |   96.1   -4.2     .1
        | .01  .01  .01   .04   .09   .08   .0           |  223.8    7.3
ngs  53 |-.01 -.05  .02   .58   .41   .08  -.2  .19  .19 |   -1.2    1.3   80.3
        | .01  .02  .01   .26   .27   .20   .1           |    2.4    3.6
sio  107| .00  .00  .00  -.06   .02  -.47   .2  .08  .07 |     .0     .0     .0
        | .01  .00  .01   .10   .09   .09   .1           |     .0     .0

Table 1.0938.b   GPS week : 0938   MJD: 50810.0-50816.0

         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  |   2   3   3   3   3   3   4 |
   2  |   2   2   3   3   3   3   3 |
   3  |   3   3   3   5   3   3   3 |
   4  |   2   3   3   3   4   4   3 |
   5  |   2   2   2   2   3   3   2 |
   6  |   3   3   3   3   3   3   3 |
   7  |   3   3   3   3   3   3   3 |
   8  |   6   5   5   5   5   4   4 |
   9  |   2   2   2   3   3   3   2 |
  10E |   3   4   4   4   5   6   5 |
  13  |   6   6   5   6   6   5   5 |
  14E |   4   4  32   5   0   4  16 | Modeling problems on days 2,4 and 6.
  15  |   3   3   4   4   3   3   3 |
  16E |   3   3   6   4   6   4   6 |
  17  |   3   3   3   3   4   3   3 |
  18  |   3   3  11   4   3   3   3 | Modeling problems on day 2.
  19  |   3   3   4   3   3   4   3 |
  21E |   3   4   5   4   4   5   4 |
  22  |   3   3   3   4   3   3   4 |
  23E |   5   6   8   7  10   5  10 | Modeling problems on days 4 and 6.
  24  |   3   3   3   3  14  10   4 | Modeling problems on days 4 and 5.
  25  |   2   2   3   3   2   2   2 |
  26  |   3   3   3   3   3   3   3 |
  27  |   2   2   3   2   3   2   2 |
  29  |   2   2   3   2   3   2   3 |
  30  |   2   2   2   3   3   3   3 |
  31  |   3   3   3   3   3   3   3 |

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 2.0938.0   GPS week: 0938   Day: 0   MJD: 50810.0

CENT STA|  DX   DY   DZ    RX    RY    RZ  SCL  RMS WRMS |   TOFT  TDRFT    RMS
--------|------------------------------------------------|---------------------
cod  84 | .00  .01  .00  -.42   .09   .10  -.2  .05  .04 |    5.1  -12.6     .3
emr  27 | .00  .00 -.02   .25  -.27   .80   .1  .12  .12 | 4041.0  114.9     .2
gfz  55 | .01  .00  .00   .16   .01  -.28  -.1  .06  .05 |    1.4   -4.4     .4
igr  n/a| .00 -.01 -.01  -.19   .03   .11   .0  .05  .04 |    -.8    1.0     .3
jpl  37 | .00  .01 -.01   .11  -.13   .11   .2  .04  .04 | -129.5   -9.8     .1
ngs  50 |-.02 -.07  .03   .50   .53   .37  -.2  .16  .17 |     .4     .4   81.2
sio  103| .00  .01  .01  -.09   .14  -.44   .1  .06  .06 |     .0     .0     .0

Table 2.0938.1   GPS week: 0938   Day: 1   MJD: 50811.0

CENT STA|  DX   DY   DZ    RX    RY    RZ  SCL  RMS WRMS |   TOFT  TDRFT    RMS
--------|------------------------------------------------|---------------------
cod  85 | .00  .01 -.01  -.44   .22   .00  -.2  .05  .03 |   -6.9    9.8     .3
emr  31 | .00  .00  .00   .31   .01   .58   .0  .11  .11 | 4155.0  129.8     .2
gfz  55 | .01  .00  .00   .19   .02  -.01   .0  .05  .05 |   -4.1    4.3     .5
igr  n/a| .00 -.01  .00  -.37   .17  -.05  -.1  .06  .05 |     .7   -1.5     .3
jpl  37 | .00  .01  .00   .00  -.28   .05   .2  .04  .04 | -139.9    4.4     .1
ngs  55 |-.02 -.06  .02   .80   .29  -.18   .0  .17  .17 |    1.0     .4   80.5
sio  108| .00  .00  .00  -.07  -.01  -.54   .1  .08  .07 |     .0     .0     .0

Table 2.0938.2   GPS week: 0938   Day: 2   MJD: 50812.0

CENT STA|  DX   DY   DZ    RX    RY    RZ  SCL  RMS WRMS |   TOFT  TDRFT    RMS
--------|------------------------------------------------|---------------------
cod  84 |-.01  .01 -.01  -.63   .30  -.09  -.2  .10  .05 |   -3.4    1.5     .4
emr  31 | .00 -.02 -.01   .59  -.10   .75   .0  .11  .10 | 4278.0  122.2     .3
gfz  56 | .01  .00  .01   .09  -.06   .07  -.1  .05  .05 |   -4.8    1.3     .4
igr  n/a| .00 -.01  .00   .19   .03  -.12   .1  .13  .08 |    -.5   -1.3     .5
jpl  37 | .01  .01 -.01   .01  -.22   .09   .1  .08  .08 |  282.3   -6.2     .1
ngs  55 |-.01 -.04  .03   .90   .58  -.02  -.4  .23  .23 |    -.3   -1.6   78.6
sio  110|-.01  .01  .01  -.25   .07  -.51   .1  .07  .07 |     .0     .0     .0

Table 2.0938.3   GPS week: 0938   Day: 3   MJD: 50813.0

CENT STA|  DX   DY   DZ    RX    RY    RZ  SCL  RMS WRMS |   TOFT  TDRFT    RMS
--------|------------------------------------------------|---------------------
cod  84 | .01  .01 -.01  -.41   .24  -.02  -.3  .05  .04 |   -2.7    1.6     .4
emr  29 |-.01  .00 -.02   .56  -.60   .26  -.2  .14  .13 | 4406.1  118.2     .3
gfz  56 | .01  .00  .01   .17  -.01   .65  -.2  .07  .07 |    -.9    -.5     .7
igr  n/a| .00  .00  .00  -.02  -.01  -.33  -.2  .06  .05 |   -1.1    4.3     .4
jpl  37 | .00  .01 -.01   .07  -.07  -.13   .2  .04  .04 |  280.8  -13.3     .2
ngs  53 |-.02 -.07  .00   .73   .59  -.10  -.2  .17  .17 |     .4    1.4   83.4
sio  107|-.01  .01  .01  -.06   .00  -.57   .3  .07  .07 |     .0     .0     .0

Table 2.0938.4   GPS week: 0938   Day: 4   MJD: 50814.0

CENT STA|  DX   DY   DZ    RX    RY    RZ  SCL  RMS WRMS |   TOFT  TDRFT    RMS
--------|------------------------------------------------|---------------------
cod  82 | .00  .01 -.01  -.47   .17   .16  -.2  .07  .04 |   -8.8   14.7     .4
emr  29 |-.02 -.01 -.01   .71  -.08   .55   .0  .13  .11 | 4533.0  124.3     .2
gfz  54 | .01  .00  .00   .01   .09  -.24  -.1  .07  .06 |    -.6     .7     .5
igr  n/a| .00 -.03  .00   .28   .09  -.19  -.2  .13  .08 |    -.2     .5     .8
jpl  37 | .00  .00  .00   .10  -.20   .01   .2  .07  .07 |  273.0   -9.5     .2
ngs  50 |-.01 -.04  .01   .18   .47   .07  -.1  .22  .25 |   -1.3   -3.2   79.6
sio  110| .00  .01  .01   .06   .03  -.32   .3  .10  .07 |     .0     .0     .0

Table 2.0938.5   GPS week: 0938   Day: 5   MJD: 50815.0

CENT STA|  DX   DY   DZ    RX    RY    RZ  SCL  RMS WRMS |   TOFT  TDRFT    RMS
--------|------------------------------------------------|---------------------
cod  79 | .01  .01  .00  -.48   .20   .32  -.3  .06  .04 |   -2.9    8.3     .3
emr  31 | .00 -.01 -.01   .62  -.34   .67  -.1  .10  .09 | 4657.0  132.0     .2
gfz  50 | .00  .00  .01  -.10   .01  -.31  -.1  .07  .06 |   -1.1    5.1     .5
igr  n/a| .00 -.02  .00   .00  -.03  -.13  -.2  .09  .05 |    -.4     .3     .5
jpl  37 |-.01  .00 -.01   .08  -.02  -.01   .2  .05  .05 |  265.3     .9     .2
ngs  52 | .00 -.03  .03   .63  -.16   .07  -.4  .18  .18 |   -5.7    7.9   80.6
sio  104| .00  .00  .00  -.01   .06  -.53   .1  .08  .07 |     .0     .0     .0

Table 2.0938.6   GPS week: 0938   Day: 6   MJD: 50816.0

CENT STA|  DX   DY   DZ    RX    RY    RZ  SCL  RMS WRMS |   TOFT  TDRFT    RMS
--------|------------------------------------------------|---------------------
cod  83 | .00  .02 -.01  -.31   .14   .52  -.3  .07  .05 |   -7.2   17.0     .4
emr  31 | .01 -.03  .00   .82  -.12   .44   .1  .11  .11 | 4776.0  132.9     .2
gfz  49 | .00  .00  .01  -.19   .08  -.53  -.1  .06  .05 |   -5.2   10.1     .5
igr  n/a| .00 -.01  .00  -.02   .30  -.18   .0  .17  .05 |     .1     .7     .6
jpl  37 | .00  .01 -.02   .08  -.22   .02   .2  .06  .06 | -159.4    4.4     .1
ngs  54 | .01 -.06  .02   .30   .58   .32  -.1  .20  .17 |   -2.7    3.6   78.3
sio  110|-.01  .00 -.01   .02  -.16  -.37   .1  .09  .08 |     .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 3.0938.0   GPS week: 0938   Day: 0   MJD: 50810.0

               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   7   5   3   3  12   5    2 |    5   6   6   5   4   9   5    3
   2  |   3   7   2   3   3  11   5    2 |    6   9   7   7   5  15   8    6
   3  |   3  17   5   4   2  23   6    3 |    5  12   8   5   4  18   5    3
   4  |   3   8   3   4   4  17   6    2 |    4   8   8   6   4  13   5    4
   5  |   2   7   5   3   3  14   4    2 |    4   7   8   5   4  13   5    4
   6  |   3  12   4   4   3  17   4    3 |    6  15   8   8   6  12   7    6
   7  |   3   9   7   4   3  12   7    3 |    6  10   9  11   8  21  11    8
   8  |  10 ---   8   7 ---  19   8    6 |   15 ---   8   7 ---   9   8    8
   9  |   2   6   3   3   3  15   5    2 |    9   9  10   8   9  12  10    8
  10E |   4  11   9   3   4  17   6    3 |    4  11   9   6   6  18   9    5
  13  |  11 ---  10   8 ---  18  11    6 |    6 ---  13  10 ---  12  13    8
  14E |   4  17   8   6   5  19   4    4 |    5  14   6   8   5  18   6    5
  15  |   4  11   6   4   2  17   5    3 |    6  10   9   6   4  13   5    4
  16E |   4  10   5   4   5  21   5    3 |    5   9   7   6   5  20   6    4
  17  |   4  12   4   4   3  12   7    3 |    5  12   9   7   5  14   8    5
  18  |   3  13   5   3   4  16   5    3 |    2   9   3   4   4   8   3    2
  19  |   6  15   6   5   3  12   5    3 |   15  14  16  12  14  11  17   14
  21E |   4  14   5   5   3  19   6    3 |   20  23  19  21  21  26  22   20
  22  |   4  12   4   3   3  20   6    3 |    5  11   7   5   4  16   6    3
  23E |   6  25   5  15   6  30   5    5 |   19  31  12  19  25  28  22   20
  24  |   4  12   5   3   3  18   6    3 |    4   9   4   5   3   9   6    3
  25  |   3   8   5   3   4   9   7    2 |    5  12   7   9   6   9  10    6
  26  |   4  11   3   4   4  11   7    3 |    6  10  10   5   8  15   9    6
  27  |   3   7   5   2   4  15   6    2 |    7   6   9   7   6  14   7    6
  29  |   2   8   4   5   3   9   4    2 |    5   6   8   5   5  10   6    3
  30  |   3  12   4   3   3  13   4    2 |    5  10   7   5   4  12   6    4
  31  |   6   9   5   4   3  13   6    3 |    5   7   8   5   5  14   6    4
------|----------------------------------|----------------------------------
 RMS  |   5  12   6   5   4  16   6      |T   8  12   9   8   8  15   9    7
 WRMS |   4  12   5   4   4  17   6      |NE  6   9   8   7   6  13   8    5
 MEDI |   4  11   5   4   3  16   6      |MD  5  10   8   6   5  13   7    5

Table 3.0938.1   GPS week: 0938   Day: 1   MJD: 50811.0

               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   8   6   4   4  15   5    3 |    4   5   6   7   3  12   6    2
   2  |   3   8   3   4   3  12   9    2 |    4   7   5   9   4  16   9    5
   3  |   3  13   5   5   3  19   7    3 |    3   9   5   7   3  15   5    3
   4  |   3   8   4   6   4  17   5    3 |    3   7   4   8   3  15   5    3
   5  |   3   6   3   3   3  14   6    2 |    4   6   6   6   4  13   7    4
   6  |   4   8   4   4   3  13  10    3 |    5  10   6   6   5  11   6    4
   7  |   3   8   4   4   3  13   9    3 |    4  10   4   7   4  16   8    4
   8  |  11  18   6   5 ---  14   8    5 |    9  13   5   8 ---  11   6    5
   9  |   2   6   4   4   3  13   7    2 |    6   5   7   7   7   9   9    6
  10E |   7  11  11   4   5  16  14    4 |    4  13  12   8   4  17  11    5
  13  |   7 ---   7   7 ---  15  15    6 |    6 ---   6  11 ---  14  10    6
  14E |   5  14   4   7   5  23   4    4 |    4  14   6  10   3  18   6    6
  15  |   3   7   5   3   3  22   6    3 |    3   8   5   7   3  13   6    4
  16E |   4  12   4   6   6  23   7    3 |    8  14   8   9   7  20   8    7
  17  |   4  11   4   5   3  11   9    3 |    3  11   7   7   4  15   6    5
  18  |   3  14   7   3   5  11   7    3 |    2  12   3   4   4   9   5    3
  19  |   4   9   5   3   3  10   9    3 |   16  15  13  13  16  19  17   15
  21E |   4  12   5   7   3  35   6    4 |   12  17  12  13  14  28  14   12
  22  |   3  12   5   6   4  15   9    3 |    5   9   6   9   3  14   7    4
  23E |   6  30   6  16  10  29  10    6 |   23  35  13  19  24  30  22   20
  24  |   4   4   7   5   4  12   8    3 |    3   7   5   7   3   8   7    3
  25  |   3   6   4   6   4  13   8    2 |    3   7   4  11   4  10  10    3
  26  |   3  10   6   5   4  13   7    3 |    4   8   8   5   7  11   8    4
  27  |   3   5   5   2   4  10   6    2 |    4   6   5   6   4   9   5    3
  29  |   3   7   3   6   2  11   4    2 |    3   6   2   7   4  11   5    2
  30  |   3   9   3   3   3  13   6    2 |    5  10   6   6   5  13   6    5
  31  |   5  11   5   4   3  15   9    3 |    3  10   6   6   4  15   7    4
------|----------------------------------|----------------------------------
 RMS  |   5  11   5   6   4  17   8      |T   7  12   7   8   7  15   9    6
 WRMS |   3  11   5   5   4  17   7      |NE  5   9   6   7   5  12   7    5
 MEDI |   3   9   5   5   3  14   7      |MD  4  10   6   7   4  14   7    4

Table 3.0938.2   GPS week: 0938   Day: 2   MJD: 50812.0

               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   6   6   5  17   7    3 |    3   8   6   8   5  15   7    3
   2  |   5   5   4   6   5  19   6    3 |    4   9   4   8   5  20   8    5
   3  |   4  13   5   8   3  15   7    3 |    4  11   6  10   5  13   6    3
   4  |   5   7   5   7   5  20   7    3 |    4   8   5  11   5  19   8    4
   5  |   4   6   3   8   3  10   6    2 |    5   6   5   6   4  12   6    4
   6  |   4  10   5   7   4  10   6    3 |    9  13  10  11   8  12   6    8
   7  |   6   9   4  10   3  17   6    3 |    4  11   5  13   5  17   9    5
   8  |  12  12   6   6 ---  11   7    5 |   10   9   7   8 ---   9   7    5
   9  |   4   6   4   5   3   9   6    2 |    9  10   8  10   9  11  11    8
  10E |   7   9   8   7   6  12   8    4 |    5  13  11  12   5  16   7    6
  13  |   9 ---   5  10 ---  14  13    5 |    5 ---   6   8 ---  14  12    5
  14E |  37 --- ---  33  27 --- ---   32 |    5 --- ---  26  15 --- ---    9
  15  |   5   7   4   5   5  34   7    4 |    7  10   8   9   5  23   7    5
  16E |  11  18   9  13   5  32   9    6 |   15  16   9  16   7  32  13    9
  17  |   6  12   4   5   4  16   8    3 |    4   9   6   8   5  16   6    4
  18  |  19 --- ---  45  15  72  12   11 |    0 --- ---   0   0   0   0  ---
  19  |   8   7   7  13   7  22   7    4 |   24  25  20  18  23  31  26   23
  21E |   5  19   4  10   3  26  10    5 |   10  25  11  18  12  22  13   11
  22  |   5  11   4   8   3  19   6    3 |    4  11   5  10   4  18   6    3
  23E |   9  27 ---  18   9  31   6    8 |   20  33 ---  28  15  26  14   16
  24  |   5   8   6   7   4  13   7    3 |    4   8   5  10   3  14   8    4
  25  |   4   9   5   7   4   8   5    3 |    4   9   8  11   5   9   7    5
  26  |   6  10   3   4   4  13   7    3 |    6   9   8   9   7  14   7    5
  27  |   5   6   5   4   5   7   8    3 |    6   8   7   8   6   9   7    5
  29  |   5  10   4   8   4  18   5    3 |    4  10   7   9   5  14   5    4
  30  |   4   9   3   8   3   9   6    2 |    4   9   4   5   4  10   5    3
  31  |   5   9   5   8   3  17   8    3 |    3  11   8  10   7  18   8    5
------|----------------------------------|----------------------------------
 RMS  |  10  11   5  13   8  23   7      |T   8  13   8  12   8  17   9    7
 WRMS |   5  10   5   8   8  23   7      |NE  7  10   7   9   7  15   9    6
 MEDI |   5   9   5   8   4  17   7      |MD  5  10   7  10   5  15   7    5

Table 3.0938.3   GPS week: 0938   Day: 3   MJD: 50813.0

               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   8   3  16   6    3 |    5   9  13   9   3  12   7    4
   2  |   6  13   7   3   3  16   7    3 |    5  13  13   7   5  21   9    6
   3  |   4  27   9   6   4  18   7    5 |    4  26  12   5   5  14   8    4
   4  |   5  10   5   6   3  18   7    3 |    4  13  12   8   5  18   9    5
   5  |   2   8   5   3   2  11   6    2 |    6  10  11   7   4  16   6    5
   6  |   4  10   4   4   4  12   6    3 |    7  10  13   8   5  11   5    6
   7  |   4   8   8   4   3  11   8    3 |    5  10  13   7   6  16   8    5
   8  |   9  11   7   5 ---  15   7    5 |   12  12  13   7 ---  13   7    7
   9  |   3  10   6   6   2  13   6    3 |    8  11  14   8   7  12  10    7
  10E |   8  16  10   5   8  16   7    4 |    5  20  17   8   4  18   7    6
  13  |   9 ---   8  11 ---  15  15    6 |    5 ---  14  12 ---  16  16    9
  14E |   6  15   7   7 ---  27   6    5 |    0   0   0   0 ---   0   0  ---
  15  |   2  14   9   5   4  21   7    4 |    4  11  14   6   4  16   6    4
  16E |   4  12   8   7   7  24   5    4 |    7  12  14   9   6  24   8    6
  17  |   4  11   8   9   3  12   9    3 |    6  11  15   7   5  14   5    5
  18  |   3  13   8   6 ---  13   4    4 |    4   8   9   5 ---  12   4    3
  19  |   7  11   9   4   5  11   4    3 |   10  13  15   9   8  15  11    8
  21E |   3  20   9   6   4  20   9    4 |    8  22  14  14  10  20  13   10
  22  |   5  13   5   7   4  19   8    4 |    6  16  14  11   5  21   6    6
  23E |   9  32 ---  13   9  29   5    7 |   28  44 ---  28  26  33  26   26
  24  |   4  14   8   3   5  10   8    3 |    2   8   7   6   4  10   8    4
  25  |   4  11   4   5   4  15   6    3 |    5  12  12   8   5  13   7    5
  26  |   2  12   6   5   3  16   7    3 |    5  12  13   6   6  12   7    4
  27  |   4  10   6   4   4  11   4    2 |    6  12  11   5   6  13   6    6
  29  |   3   5   5   7   4   9   5    2 |    5   8  10   6   5  11   6    5
  30  |   4  10   6   5   2  12   5    3 |    5  13  14   7   4  14   6    5
  31  |   4  12   6   4   3  16   5    3 |    4  12  12   5   4  15   6    3
------|----------------------------------|----------------------------------
 RMS  |   5  14   7   6   4  17   7      |T   8  15  12   9   7  16   9    7
 WRMS |   4  13   7   5   4  17   7      |NE  5  12  12   7   5  14   7    5
 MEDI |   4  12   7   5   4  15   6      |MD  5  12  13   7   5  15   7    5

Table 3.0938.4   GPS week: 0938   Day: 4   MJD: 50814.0

               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   5   5   3  10  10    3 |    4  10   6   8   3   8  10    3
   2  |   5   8   5   6   3  14   5    3 |    5  10   5  10   5  16   8    5
   3  |   3  13   8   6   3  15   8    3 |    4  12   8   9   4  15   8    4
   4  |   3  18   7   8   4  23   7    4 |    5  15   7   8   4  24   8    4
   5  |   4  10   4   5   3  14  10    3 |    4  10   6   7   5  14  11    4
   6  |   3  13   4  11   6  18   8    3 |    4  11   4   8   6  15   9    4
   7  |   6  12   4   6   3  21   7    3 |    5  10   8   8   5  23  10    6
   8  |   9  11   8   6 ---  12   9    5 |    9   9   8   7 ---   8  12    6
   9  |   3   6   7   4   3   7  11    3 |    6   9  10   8   8  10  13    7
  10E |   7  10  16   6   9  15  12    5 |    6  12  19  11   6  17  13    8
  13  |   8 ---   9   8 ---  16  16    6 |    5 ---   8  15 ---  15  13    6
  14E |   3 --- ---  26 --- --- ---    0 |    0 --- ---   0 --- --- ---  ---
  15  |   5   7   7   5   3  25   6    3 |    5   7   6   6   4  17   6    3
  16E |   5  10  10  16   7  42   7    6 |    5  11   8  17   7  35   8    5
  17  |   6  11   6   7   4  22   7    4 |    5  11   7  11   4  14   8    5
  18  |   3   9   3   6   3  15   6    3 |    4  11   5  11   3   9   6    4
  19  |   5   7   5   6   4  14   6    3 |   10  11  10  12   8  18  13   10
  21E |   7  16   8  11   5  20   8    4 |   14  18  15  15  13  20  14   12
  22  |   5   8   6   7   3  19  10    3 |    6  12   9   9   5  22   7    5
  23E |  19  19 ---  47  15  48  13   10 |   36  24 ---  33  33  44  34   32
  24  |  22  31 ---  24  27  49  27   14 |    8  25 ---  15  32  17   5   16
  25  |   4   8   4   8   3  13   7    2 |    5   8   9  10   4  17   7    5
  26  |   3  14   4   4   2  13   8    3 |    6  12  11   6   6  13   9    5
  27  |   4  14   5   4   2  11   4    3 |    4  15   7   8   5  12   6    4
  29  |   4  11   4   9   3  12   9    3 |    5  12   8   8   5  10   8    4
  30  |   3  11   4   8   3  11   9    3 |    6  11   4   7   4  11  11    5
  31  |   6   8   6   8   3  16   7    3 |    7  10   7   9   3  12   8    4
------|----------------------------------|----------------------------------
 RMS  |   7  13   7  13   7  22  10      |T   9  12   8  11  10  18  11    8
 WRMS |   4  11   6   8   7  25   7      |NE  5  12   7   9   8  15   9    6
 MEDI |   5  11   6   7   3  15   8      |MD  5  11   8   9   5  15   9    5

Table 3.0938.5   GPS week: 0938   Day: 5   MJD: 50815.0

               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   5   6   3  15   8    3 |    3   8   4   6   3  17   7    2
   2  |   6   9   4   3   4  19   7    3 |    5  10   6   9   5  24  10    6
   3  |   3  12   6   6   3  12   8    3 |    4  10   6   8   4  12   8    4
   4  |   5  17   4   5   5  21   6    4 |    4  17   4   8   5  21   6    4
   5  |   3  10   4   7   2  16   7    3 |    4  11   6   9   5  18   7    5
   6  |   3  12   7   7   6  14   7    3 |    4  12   7   7   6  13   6    4
   7  |   4   9   4   6   4  15   8    3 |    4  11   4  10   4  17  10    4
   8  |  10   9   6   6 ---  12   7    4 |    9   7   5   8 ---   9   7    5
   9  |   3   6   7   5   3  12   6    3 |    6  10   8   8   6  10  10    6
  10E |   7   8  22   7  10  23   9    6 |    6  11  17   9   7  18   6    6
  13  |   7 ---   9   8 ---  16   8    5 |    6 ---   6  10 ---  13   8    4
  14E |   5  12   4   6 ---  14   5    4 |    0   0   0   0 ---   0   0  ---
  15  |   6   7   4   4   3  19   5    3 |    5   7   6   5   6  14   5    4
  16E |   7  13   6   6   6  22   6    4 |    5  14  10  15   7  31  10    8
  17  |   4   9   5   4   4  19   8    3 |    4   9   7   7   5  13   6    4
  18  |   4   9   4   4   4  13   7    3 |    3   8   4   6   3  12   6    3
  19  |   5   6   5   5   4  29   6    4 |    6   7   6   7   5  23   5    4
  21E |   6  17   9   7   3  25  13    5 |   15  24  13  15  15  22  16   14
  22  |   4  10   5   7   4  18   6    3 |    4  10   6   8   5  20   9    4
  23E |  12  18   8   7   8  30   5    5 |   14  30   3  22  12  31  15   16
  24  |  18 --- ---  35   7 ---  16   10 |    0 --- ---   0   0 ---   0  ---
  25  |   4   7   4   5   3  16   6    2 |    4   6   5   6   4  15   5    3
  26  |   3   8   5   4   3  16   7    3 |    5   7   6   6   6  13   7    4
  27  |   4   4   5   5   3  15   4    2 |    4   7   5   6   6  16   5    4
  29  |   3  10   5   4   4  10   5    2 |    4  11   5   5   4   8   6    3
  30  |   3   9   3   6   3  10   9    3 |    5   9   6   7   5  15  10    5
  31  |   6   8   5   4   3  13   7    3 |    5   7   6   6   3  12   9    4
------|----------------------------------|----------------------------------
 RMS  |   6  10   7   9   5  18   8      |T   6  12   7   9   6  17   8    6
 WRMS |   4   9   6   5   5  18   7      |NE  4   9   5   7   4  15   7    4
 MEDI |   4   9   5   6   4  16   7      |MD  5  10   6   8   5  15   7    4

Table 3.0938.6   GPS week: 0938   Day: 6   MJD: 50816.0

               Weighted Average                Orbit Dynamics (7 days)
 PRN  | cod emr gfz igr jpl ngs sio  IGS |  cod emr gfz igr jpl ngs sio  IGS
------|----------------------------------|----------------------------------
   1  |   6  13   5   4   4  20   9    4 |    4  11   3   6   4  17   9    4
   2  |   5  10   3   5   5  11   8    3 |    7  13   8   9   6  15  12    8
   3  |   4   9   5   3   4  13   9    3 |    5  12   6   6   5  15   7    5
   4  |   4   9   4   5   4  22   8    3 |    6   9   5   7   4  17   7    4
   5  |   3   7   4   3   4  16   6    2 |    6   8   6   6   5  12   8    5
   6  |   3   8   5   4   4  14   7    3 |    5  12   6   5   5  15   7    5
   7  |   5  14   5   5   3  15   9    3 |    4  11   6   8   4  17  11    5
   8  |   9   9   6   3 ---  15   7    4 |   14   8   7   8 ---  13   7    7
   9  |   3   5   5   3   4  10   8    2 |    8   9   8   7   8  11  10    7
  10E |  10  15  11   4  10  16   9    5 |   21  19  20  20  22  21  20   21
  13  |   7 ---   7  13 ---  15  13    5 |    6 ---   9   9 ---   8  10    5
  14E |  18 --- ---  84  15 --- ---   16 |    0 --- ---   0   0 --- ---  ---
  15  |   5  10   6   6   3  16   8    3 |    7  10   7   6   4  12   5    5
  16E |   5  14  10  15   9  38  10    6 |    4   5   4   3   4   6   3    4
  17  |   6  12   7   6   4  11   8    3 |    6  15   7   7   6  13   6    6
  18  |   4  11   5   6   5   9   7    3 |    3  14   5   6   3  10   5    4
  19  |   5  10   4   3   6  11   7    3 |    7  14  10   8   6  12   9    7
  21E |   7  13   7   5   4  20  13    4 |   19  25  19  17  20  22  23   19
  22  |   4  12   3   4   4  25  10    4 |    7  10   7   7   6  23   8    6
  23E |   7  22 ---  15  11  55  14   10 |    7  22 ---  14   9  30   8    8
  24  |   8  15   5   7   6  20  11    4 |    0   0   0   0   0   0   0  ---
  25  |   4   7   4   4   3  14   4    2 |    7   9   6   8   7   9   9    7
  26  |   6   8   5   4   3  15   6    3 |    8  13  10   6   8  18   8    6
  27  |   5   7   3   3   4  10   6    2 |    6  10   8   5   5  11   9    6
  29  |   4  11   4   5   3   9   7    3 |    6   7   6   8   6   8   8    5
  30  |   3  11   3   3   3  13   6    3 |    6  11   7   6   6  13   9    5
  31  |   5  11   5   2   4  12   8    3 |    5  13   7   6   5  16   8    5
------|----------------------------------|----------------------------------
 RMS  |   7  11   6  17   6  20   9      |T   8  12   8   8   8  15   9    7
 WRMS |   5  11   5   5   6  17   8      |NE  6  10   6   6   5  13   8    5
 MEDI |   5  11   5   4   4  15   8      |MD  6  11   7   7   6  13   8    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 4.0938   GPS week: 0938   MJD: 50810.0-50816.0

CENT| CLK EPO  |      BRUS      |      USUD      |      WILL      |
----|----------|----------------|----------------|----------------|
cod | cod 2590 |U  45   27   82 |U  38   30   92 |   27   15   42 |
emr | emr 2291 |   50   28   86 |   40   34   89 |U  29   18   45 |
gfz | gfz 1209 |   44   30   91 |U  49   41  113 |   33   22   49 |
igr | igr 2575 |   45   27   85 |   40   31   94 |   27   17   44 |
igs | igs 2592 |   45   27   84 |   38   30   92 |   27   16   43 |
jpl | jpl 2326 |   46   29   80 |U  41   29   89 |   28   16   48 |


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 5.0938.0   GPS week: 0938   Day: 0   MJD: 50810.0

CENT| CLK EPO  |      BRUS      |      USUD      |      WILL      |
----|----------|----------------|----------------|----------------|
cod | cod 2592 |   49   32   92 |   30   23   81 |   23   16   35 |
emr | emr 2374 |   59   33   90 |   28   26   75 |   26   15   37 |
gfz | gfz 1276 |   34   28   86 |   35   27   78 |   30   22   39 |
igr | igr 2592 |   50   31   95 |   31   23   76 |   25   16   39 |
igs | igs 2592 |   50   31   94 |   30   22   82 |   24   17   36 |
jpl | jpl 2380 |   56   34   85 |   32   22   75 |   24   17   40 |

Table 5.0938.1   GPS week: 0938   Day: 1   MJD: 50811.0

CENT| CLK EPO  |      BRUS      |      USUD      |      WILL      |
----|----------|----------------|----------------|----------------|
cod | cod 2592 |   47   28   85 |   41   31   90 |   24   13   39 |
emr | emr 2394 |   54   27   93 |   47   38   86 |   26   16   42 |
gfz | gfz 1278 |   43   33   89 |   56   36  104 |   30   21   39 |
igr | igr 2592 |   48   27   89 |   44   30   88 |   25   15   42 |
igs | igs 2592 |   48   26   88 |   41   30   89 |   24   14   41 |
jpl | jpl 2380 |   47   26   82 |   45   30   87 |   23   13   43 |

Table 5.0938.2   GPS week: 0938   Day: 2   MJD: 50812.0

CENT| CLK EPO  |      BRUS      |      USUD      |      WILL      |
----|----------|----------------|----------------|----------------|
cod | cod 2591 |   46   27   90 |   28   34   92 |   23   15   44 |
emr | emr 2195 |   45   28   96 |   35   35   83 |   27   19   53 |
gfz | gfz 1137 |   31   33  105 |   57   50   93 |   33   21   55 |
igr | igr 2583 |   46   28   92 |   39   39   91 |   23   15   49 |
igs | igs 2592 |   46   28   93 |   31   36   89 |   23   14   45 |
jpl | jpl 2380 |   48   28   93 |   34   32   90 |   23   12   48 |

Table 5.0938.3   GPS week: 0938   Day: 3   MJD: 50813.0

CENT| CLK EPO  |      BRUS      |      USUD      |      WILL      |
----|----------|----------------|----------------|----------------|
cod | cod 2590 |   43   23   73 |   49   30  108 |   34   14   62 |
emr | emr 2371 |   50   23   77 |   48   32  106 |   34   17   62 |
gfz | gfz 1227 |   43   30   81 |   62   52  165 |   28   21   59 |
igr | igr 2538 |   42   22   77 |   47   31  107 |   34   17   62 |
igs | igs 2592 |   43   22   75 |   48   30  108 |   34   15   63 |
jpl | jpl 2189 |   44   23   73 |   51   27  107 |   40   16   81 |

Table 5.0938.4   GPS week: 0938   Day: 4   MJD: 50814.0

CENT| CLK EPO  |      BRUS      |      USUD      |      WILL      |
----|----------|----------------|----------------|----------------|
cod | cod 2583 |   51   30   83 |   31   26   75 |   26   16   33 |
emr | emr 2095 |   65   27   93 |   37   28   69 |   31   20   41 |
gfz | gfz 1130 |   75   27  104 |   42   34   86 |   37   24   54 |
igr | igr 2547 |   50   31   85 |   35   27   73 |   27   19   37 |
igs | igs 2590 |   51   30   85 |   30   27   75 |   26   17   34 |
jpl | jpl 2285 |   51   31   81 |   32   28   67 |   27   17   36 |

Table 5.0938.5   GPS week: 0938   Day: 5   MJD: 50815.0

CENT| CLK EPO  |      BRUS      |      USUD      |      WILL      |
----|----------|----------------|----------------|----------------|
cod | cod 2592 |   34   22   74 |   44   28   81 |   26   13   33 |
emr | emr 2400 |   35   28   74 |   47   36   82 |   27   15   33 |
gfz | gfz 1229 |   24   31   78 |   43   35   90 |   36   19   45 |
igr | igr 2587 |   34   27   77 |   44   31   92 |   27   14   35 |
igs | igs 2592 |   33   25   75 |   44   30   83 |   26   14   32 |
jpl | jpl 2288 |   32   32   72 |   50   28   76 |   26   14   34 |

Table 5.0938.6   GPS week: 0938   Day: 6   MJD: 50816.0

CENT| CLK EPO  |      BRUS      |      USUD      |      WILL      |
----|----------|----------------|----------------|----------------|
cod | cod 2592 |   41   25   76 |   35   33  111 |   28   19   38 |
emr | emr 2205 |   34   30   78 |   35   38  114 |   33   24   40 |
gfz | gfz 1188 |   39   27   91 |   41   45  143 |   38   26   49 |
igr | igr 2587 |   40   24   81 |   39   33  119 |   30   22   39 |
igs | igs 2592 |   41   26   77 |   36   34  112 |   28   20   39 |
jpl | jpl 2379 |   41   27   74 |   37   33  112 |   30   20   41 |

                                                                               
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 6.0938   GPS week: 0938   MJD: 50810.5-50816.5
                                                     AC LOD   AC LOD
CENT  FLAG  |  Xpole  Ypole    Xrt    Yrt    LOD |    BIAS  BIAS RMS  
------------------------------------------------------------------------
cod   uuuuu |    -25     48      4    -23      0 |      -5     15
            |      8      9     21      8      9 |       1
emr   uuuuu |     13    -54    -23     40     12 |     -34     47
            |     14     27    121     69     38 |       6
gfz   uuuuu |      6     -9     13    -12     14 |      18     31
            |      7     20     26     12      8 |       3
igr   xxxxx |    -27     -1    -13    -39     15 |       1     22
            |     26     25     52     39     15 |       1
jpl   uuuuu |     21     -7      7     50    -19 |     -16     45
            |      9      6     15      9     30 |       5
ngs   uuuuu |    -52    -56    -78   -129     -6 |      -5     51
            |     23     35    124     82     38 |       4
sio   uuuuu |     -1     14      3    -20    -23 |      20     68
            |      3      7     24      9     24 |       7
                                                                               
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 7.0938.0   GPS week: 0938   Day: 0   MJD: 50810.5
                                                     AC LOD   AC LOD
CENT  FLAG  |  Xpole  Ypole    Xrt    Yrt    LOD |    BIAS  BIAS RMS  
------------------------------------------------------------------------
cod   uuuuu |    -15     50     -1    -13     -6 |      -4     14
emr   uuuuu |      4    -22    -18    -23     32 |     -44     55
gfz   uuuuu |      2    -31     -5     -2     24 |      13     28
igr   xxxxx |    -10     20     -6    -52     -6 |       0     22
jpl   uuuuu |     19    -10      5     38    -26 |     -12     41
ngs   uuuuu |    -45    -37    -18    -86     17 |      -7     50
sio   uuuuu |     -4      9     12    -15    -16 |      23     70

Table 7.0938.1   GPS week: 0938   Day: 1   MJD: 50811.5
                                                     AC LOD   AC LOD
CENT  FLAG  |  Xpole  Ypole    Xrt    Yrt    LOD |    BIAS  BIAS RMS  
------------------------------------------------------------------------
cod   uuuuu |    -27     45     11    -24     -3 |      -3     15
emr   uuuuu |      0    -21   -112    107      6 |     -39     53
gfz   uuuuu |      5    -27     29    -25     16 |      16     31
igr   xxxxx |    -23     32    -61    -27      2 |       1     22
jpl   uuuuu |     27     -6      9     48     -7 |     -11     40
ngs   uuuuu |    -42    -49    -79   -159     14 |      -3     49
sio   uuuuu |      4      9     17    -30    -30 |      25     70

Table 7.0938.2   GPS week: 0938   Day: 2   MJD: 50812.5
                                                     AC LOD   AC LOD
CENT  FLAG  |  Xpole  Ypole    Xrt    Yrt    LOD |    BIAS  BIAS RMS  
------------------------------------------------------------------------
cod   uuuuu |    -41     62     17    -29     10 |      -3     15
emr   uuuuu |     17    -52    -37     96     47 |     -37     49
gfz   uuuuu |     12    -12     27    -30     10 |      18     31
igr   xxxxx |      1    -20     19     -2     30 |       1     23
jpl   uuuuu |     23      4     -5     52    -78 |     -11     40
ngs   uuuuu |    -61   -113   -140   -105    -46 |      -2     49
sio   uuuuu |     -2     26     13    -20    -30 |      25     70

Table 7.0938.3   GPS week: 0938   Day: 3   MJD: 50813.5
                                                     AC LOD   AC LOD
CENT  FLAG  |  Xpole  Ypole    Xrt    Yrt    LOD |    BIAS  BIAS RMS  
------------------------------------------------------------------------
cod   uuuuu |    -24     50     10    -14    -14 |      -4     16
emr   uuuuu |     25    -48      7    -11     61 |     -33     46
gfz   uuuuu |     18    -24      6     -4     23 |      18     31
igr   xxxxx |     -8     11    -41    -20     13 |       2     22
jpl   uuuuu |     16     -6     -8     62    -29 |     -16     47
ngs   uuuuu |    -89    -54    -28   -176     61 |      -5     52
sio   uuuuu |      4     10     -3    -15    -32 |      23     70

Table 7.0938.4   GPS week: 0938   Day: 4   MJD: 50814.5
                                                     AC LOD   AC LOD
CENT  FLAG  |  Xpole  Ypole    Xrt    Yrt    LOD |    BIAS  BIAS RMS  
------------------------------------------------------------------------
cod   uuuuu |    -20     50    -36    -32      2 |      -6     16
emr   uuuuu |     -3    -82    161     96      5 |     -29     44
gfz   uuuuu |     -1      7    -34    -18      1 |      19     32
igr   xxxxx |    -73    -41     88   -121     30 |       2     22
jpl   uuuuu |     27    -12     -3     51     -2 |     -19     48
ngs   uuuuu |    -31    -32     98   -157    -33 |      -2     53
sio   uuuuu |      1      8    -42    -33      4 |      19     69

Table 7.0938.5   GPS week: 0938   Day: 5   MJD: 50815.5
                                                     AC LOD   AC LOD
CENT  FLAG  |  Xpole  Ypole    Xrt    Yrt    LOD |    BIAS  BIAS RMS  
------------------------------------------------------------------------
cod   uuuuu |    -24     48     -3    -17     11 |      -7     17
emr   uuuuu |     36    -71     56    -61    -46 |     -27     41
gfz   uuuuu |      4     13     25     -1     15 |      20     32
igr   xxxxx |    -48    -13    -47    -38      6 |       2     23
jpl   uuuuu |      4    -13     12     40     -3 |     -21     49
ngs   uuuuu |    -24    -92   -306     18    -31 |      -6     53
sio   uuuuu |     -3     17     -5     -8    -65 |      16     67

Table 7.0938.6   GPS week: 0938   Day: 6   MJD: 50816.5
                                                     AC LOD   AC LOD
CENT  FLAG  |  Xpole  Ypole    Xrt    Yrt    LOD |    BIAS  BIAS RMS  
------------------------------------------------------------------------
cod   uuuuu |    -21     33     30    -29      1 |      -6     16
emr   uuuuu |     13    -85   -219     73    -20 |     -29     44
gfz   uuuuu |      0     14     39     -5      9 |      21     32
igr   xxxxx |    -24      2    -47    -16     33 |       2     23
jpl   uuuuu |     29     -9     35     61     14 |     -22     49
ngs   uuuuu |    -72    -12    -75   -239    -23 |     -12     52
sio   uuuuu |     -4     16     31    -22      6 |       7     61


[Mailed From: Yves Mireault <mireault at geod.emr.ca>]



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