Subject: [IGSREPORT-4077] Wk 0918 IGS Final Orbits
From: AC Coordinator / NRCan GSDivision
Date: Wed, 27 Aug 1997 6:44:56 PDT

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IGS Electronic Report    Wed Aug 27  6:44:56 PDT 1997      Message Number 4077
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Author: AC Coordinator / NRCan GSDivision
Subject: Wk 0918 IGS Final Orbits

Final IGS Orbit Combination - Week 0918   (Aug 10, 1997 - Aug 16, 1997)

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

COMBINATION STRATEGY:

For a complete description of combination strategy, please refer to the report
posted on CDDIS (IGS09187.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.

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:

 IGS09180-6.SP3  IGS GPS ephemeris files for days 0-6, week 0918 in SP3 format.
 IGS09187.ERP    Earth Rotation Parameters (ERP) and their rates as well as
                 Universal Time (UT1-UTC) and Length Of Day (LOD) associated 
                 with IGS ephemerides.
 IGS09187.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 non-SA satellites:

                  Day | PRN list
                  ----+---------
                  0-6 |  15 

6. The following table lists all maneuvered satellites for this week.
   The ESA solution which modeled the maneuver is provided for that satellite
   on that day as the combined solution. An associated accuracy code of 0
   (unknown) was given since there was no redundancy. 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
               ----+-----+------------+-----------
                14 |  2  | 1997_08_12 | 092-97224

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
                  ----+--------+---------------
                   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 (Aug 13) | 00:00:00 |  07   |   All    | Modeling problems
          3 (Aug 13) | 00:00:00 |  14   |   All    | Maneuver
          4 (Aug 14) | 00:00:00 |  16   |   All    | Modeling problems (a)
          4 (Aug 14) | 00:00:00 |  31   |   All    | Modeling problems

   (a) Satellite PRN16 was excluded from long arc evaluation on days 1,3,5 for
       all centres due to unrealistic RMS. 

9.  PRN13 was launched on 23 July 1997/wk915 day 3 at 03:43 UT.  It will reside
    in slot F-5 (ref. NANU 088-97206).  A Follow up NANU will be sent once the
    navigation payload on PRN13 is usable.

10.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.

11.*** NEW TABLES ***
   Starting with GPS wk 917, new tables are appended to the IGS Final
   summary report. AC ERP, ERP Rates and LOD differences with respect to       
   IGS combined values (IGS-AC) are now summarized in Table 6 (weekly summary)
   and Table 7 (daily summary).

ORBIT COMBINATION AND EVALUATION STATISTICS:

For a complete description of tables and statistics, please refer to the report
posted on CDDIS (IGS09187.SUM).

Table 1: Week 0918 summary.                       (Aug 10, 1997 - Aug 16, 1997)

Table 1.0918.a   GPS week: 0918   MJD: 50670.0-50676.0

         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  77 | .00  .01  .00  -.10   .07   .29  -.1  .05  .04 |    2.0    -.3     .5
        | .00  .00  .01   .09   .15   .14   .1           |    4.3   11.3
emr  29 | .00 -.01 -.01   .56  -.06   .16   .0  .11  .11 |  857.1   90.0     .5
        | .01  .00  .01   .18   .09   .10   .1           |  377.8   11.3
esa  50 | .00  .01  .00  -.09  -.09  -.03   .1  .07  .07 |     .9  -79.3    1.2
        | .00  .00  .01   .27   .16   .21   .1           |   14.0   18.4
gfz  53 | .00  .00  .01   .02   .09  -.21  -.1  .05  .05 |  858.7   90.4     .4
        | .00  .00  .00   .11   .08   .10   .1           |  377.9   11.2
igr  n/a| .00 -.02  .00   .07   .11   .08   .0  .07  .06 |    -.4     .2     .5
        | .00  .00  .00   .16   .14   .19   .1           |    1.2    1.9
jpl  37 | .00  .00  .00  -.15  -.14   .10   .2  .04  .04 |  721.6   66.9     .4
        | .00  .00  .01   .15   .08   .13   .1           |  402.5   38.7
ngs  49 | .00 -.05 -.02   .45   .25  -.08   .1  .16  .17 |   -2.0    3.5   80.0
        | .01  .01  .02   .43   .23   .37   .3           |    4.2    4.9
sio  108| .00  .00 -.02   .04   .06  -.43  -.1  .07  .07 |     .0     .0     .0
        | .01  .00  .01   .12   .09   .14   .2           |     .0     .0

Table 1.0918.b   GPS week : 0918   MJD: 50670.0-50676.0

         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
------|-----------------------------|------------------------------------------
   1E |   3   3   3   5   3   3   3 |
   2  |   3   3   2   3   2   3   3 |
   3E |   3   3   2   3   3   3   3 |
   4  |   2   2   4   3   2   2   3 |
   5  |   2   2   2   2   2   2   2 |
   6E |   3   3   4   4   3   3   3 |
   7E |   4   3   4   3   3   4   4 |
   9  |   2   2   2   2   2   2   2 |
  10  |   2   2   2   3   3   3   2 |
  14  |   2   3   0   3   2   4   7 | Maneuver on day 2.
  15  |   3   2   2   2   2   2   3 |
  16  |   2   7   2   7   2   8   3 | Modeling problems on days 1,3,5.
  17  |   2   2   2   2   2   2   3 |
  18E |   3   3   2   4   2   4   3 |
  19  |   2   2   2   3   2   3   3 |
  21  |   2   2   2   2   2   2   3 |
  22  |   2   2   3   3   3   3   3 |
  23  |   2   2   3   2   3   3   3 |
  24  |   2   2   2   3   2   3   2 |
  25  |   2   2   3   2   2   2   3 |
  26E |   3   3   2   3   2   3   4 |
  27  |   2   2   2   2   2   2   3 |
  29E |   2   2   3   3   2   3   3 |
  30  |   3   2   2   3   2   2   2 |
  31E |   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 2.0918.0   GPS week: 0918   Day: 0   MJD: 50670.0

CENT STA|  DX   DY   DZ    RX    RY    RZ  SCL  RMS WRMS |   TOFT  TDRFT    RMS
--------|------------------------------------------------|---------------------
cod  79 | .00  .01  .00  -.11   .06   .20  -.2  .04  .04 |   -3.7   -3.7     .4
emr  32 | .00 -.02 -.01   .61  -.14   .15   .1  .10  .10 |  773.1   87.7     .4
esa  49 | .00  .01  .01  -.38  -.06   .25   .2  .06  .06 |   -6.2  -84.9    1.3
gfz  53 | .00 -.01  .01   .04   .14  -.14  -.1  .05  .05 |  774.5   88.3     .4
igr  n/a| .00 -.01  .00   .00   .10   .30   .1  .05  .05 |   -1.3    2.1     .4
jpl  37 | .00  .01  .00  -.04  -.19   .03   .3  .04  .04 |  774.3   88.0     .4
ngs  50 | .00 -.06  .01   .25   .07  -.29   .4  .17  .19 |   -3.5    3.2   81.8
sio  111| .00  .00 -.01   .04   .08  -.37  -.2  .06  .06 |     .0     .0     .0

Table 2.0918.1   GPS week: 0918   Day: 1   MJD: 50671.0

CENT STA|  DX   DY   DZ    RX    RY    RZ  SCL  RMS WRMS |   TOFT  TDRFT    RMS
--------|------------------------------------------------|---------------------
cod  79 | .00  .01 -.01  -.06   .25   .18  -.2  .05  .04 |    4.4   18.6     .4
emr  31 |-.01 -.01  .00   .64  -.08   .35   .0  .11  .11 |  861.4  102.8     .5
esa  53 | .00  .01  .01  -.45  -.33  -.07   .3  .07  .06 |  -19.0  -62.8     .9
gfz  53 | .00  .00  .01  -.15   .11  -.21  -.1  .04  .04 |  862.8  103.1     .4
igr  n/a| .00 -.02  .00   .21  -.01  -.27   .0  .07  .04 |     .0    -.5     .5
jpl  37 | .00  .00  .00   .02  -.16   .27   .1  .04  .04 |  862.7  102.8     .5
ngs  51 | .02 -.05 -.01   .89   .34   .60  -.1  .16  .16 |   -1.0    8.2   81.8
sio  110|-.01  .00 -.01   .08   .03  -.54   .0  .06  .05 |     .0     .0     .0

Table 2.0918.2   GPS week: 0918   Day: 2   MJD: 50672.0

CENT STA|  DX   DY   DZ    RX    RY    RZ  SCL  RMS WRMS |   TOFT  TDRFT    RMS
--------|------------------------------------------------|---------------------
cod  78 | .00  .01  .00  -.02   .15   .35  -.1  .04  .04 |    5.3   -8.8     .5
emr  26 | .00 -.02 -.01   .50  -.09   .04   .2  .11  .12 |  956.1   71.6     .5
esa  52 | .00  .01  .00  -.08  -.15  -.14   .1  .06  .06 |   18.2  -84.9     .8
gfz  53 | .00  .00  .01   .05   .04  -.21  -.1  .05  .05 |  957.7   71.9     .4
igr  n/a| .00 -.02  .01  -.04   .03  -.08   .0  .05  .05 |     .8   -1.5     .4
jpl  37 | .00  .00  .01  -.16  -.11   .05   .2  .04  .04 |  957.5   71.7     .4
ngs  52 | .00 -.05  .00   .25   .34   .01   .0  .15  .16 |    1.7    -.1   81.0
sio  110| .00  .00 -.02   .03   .16  -.34  -.3  .08  .06 |     .0     .0     .0

Table 2.0918.3   GPS week: 0918   Day: 3   MJD: 50673.0

CENT STA|  DX   DY   DZ    RX    RY    RZ  SCL  RMS WRMS |   TOFT  TDRFT    RMS
--------|------------------------------------------------|---------------------
cod  77 | .00  .00  .00  -.26   .06   .21  -.2  .05  .04 |    5.2   -7.4     .5
emr  25 |-.01 -.02 -.01   .31   .04   .23   .1  .13  .12 | 1028.2   89.8     .5
esa  51 | .00  .01  .00   .22   .15  -.40  -.1  .07  .07 |   10.4  -59.4    1.5
gfz  53 | .01  .00  .01   .09   .09  -.08  -.1  .06  .06 | 1029.7   90.3     .5
igr  n/a| .00 -.02  .00   .20  -.03   .15   .0  .06  .05 |     .0    -.4     .4
jpl  37 | .00  .00  .00  -.04  -.28   .17   .2  .04  .04 | 1028.9   90.2     .3
ngs  49 | .01 -.05 -.04   .26   .64   .09  -.1  .16  .16 |    -.6     .8   78.9
sio  106|-.01  .00 -.02  -.17  -.07  -.45   .1  .08  .08 |     .0     .0     .0

Table 2.0918.4   GPS week: 0918   Day: 4   MJD: 50674.0

CENT STA|  DX   DY   DZ    RX    RY    RZ  SCL  RMS WRMS |   TOFT  TDRFT    RMS
--------|------------------------------------------------|---------------------
cod  72 | .00  .00  .00  -.13  -.07   .17  -.1  .04  .04 |    6.4   -6.7     .5
emr  31 |-.01 -.01  .00   .44  -.19   .15   .0  .09  .09 | 1116.2   90.4     .4
esa  50 | .00  .01  .00   .24   .02   .01   .0  .06  .06 |    1.5  -91.5    1.1
gfz  53 | .00  .00  .01   .18   .13  -.16  -.1  .05  .05 | 1117.9   90.7     .4
igr  n/a| .00 -.01  .00   .26   .13   .17  -.2  .05  .04 |    -.1     .0     .3
jpl  37 | .00  .00  .00  -.35  -.03   .14   .2  .03  .03 | 1117.9   90.3     .3
ngs  48 | .00 -.04 -.02   .11   .31  -.08  -.1  .14  .16 |   -4.8    7.9   78.6
sio  111| .01  .00 -.02   .06  -.03  -.68   .0  .07  .06 |     .0     .0     .0

Table 2.0918.5   GPS week: 0918   Day: 5   MJD: 50675.0

CENT STA|  DX   DY   DZ    RX    RY    RZ  SCL  RMS WRMS |   TOFT  TDRFT    RMS
--------|------------------------------------------------|---------------------
cod  75 | .01  .01 -.01   .01  -.17   .55  -.2  .05  .04 |   -1.2   13.4     .4
emr  32 | .00 -.01 -.01   .55   .07   .08  -.2  .10  .10 | 1199.1  104.4     .4
esa  48 | .01  .01  .00  -.03  -.06   .17   .3  .07  .07 |   13.9  -62.7    1.3
gfz  54 | .00 -.01  .00   .05   .17  -.39  -.2  .05  .05 | 1200.7  104.7     .3
igr  n/a| .00 -.02 -.01   .06   .39   .09  -.1  .09  .07 |     .3   -1.6     .5
jpl  37 |-.01  .01  .01  -.35  -.09  -.13   .2  .05  .05 |  150.8   23.6     .3
ngs  50 | .01 -.07 -.04   .14  -.02  -.41   .5  .17  .18 |    3.3   -4.2   78.5
sio  107|-.01  .00 -.01  -.03   .15  -.38   .0  .08  .08 |     .0     .0     .0

Table 2.0918.6   GPS week: 0918   Day: 6   MJD: 50676.0

CENT STA|  DX   DY   DZ    RX    RY    RZ  SCL  RMS WRMS |   TOFT  TDRFT    RMS
--------|------------------------------------------------|---------------------
cod  77 | .00  .01 -.01  -.13   .24   .37   .0  .06  .05 |   -2.5   -7.6     .6
emr  29 | .00 -.02 -.02   .87  -.03   .10  -.2  .13  .13 |   65.8   83.1     .7
esa  49 | .00  .00  .01  -.17  -.24  -.02   .3  .09  .08 |  -12.3 -108.8    1.0
gfz  55 |-.01  .00  .01  -.08  -.07  -.27   .0  .06  .06 |   67.3   83.5     .6
igr  n/a| .00 -.02  .00  -.19   .14   .20  -.1  .10  .08 |   -2.6    3.4     .8
jpl  37 | .00  .00  .00  -.14  -.12   .18   .0  .05  .05 |  159.2    1.6     .6
ngs  46 |-.01 -.06 -.02  1.22   .05  -.51   .2  .19  .19 |   -9.1    8.4   79.3
sio  103| .00  .01 -.01   .23   .09  -.24  -.3  .07  .07 |     .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 3.0918.0   GPS week: 0918   Day: 0   MJD: 50670.0

               Weighted Average                Orbit Dynamics (7 days)
 PRN  | cod emr esa gfz igr jpl ngs sio  IGS |  cod emr esa gfz igr jpl ngs sio  IGS
------|--------------------------------------|--------------------------------------
   1  |   3   8   4   7   5   5  27   8    3 |    5  11   6   6   8   5  18   8    5
   2  |   5  10   5   5   5   3  16   7    3 |    5  10   5   6   7   4  14   8    4
   3E |   5  14   6   4   7   5  14   5    3 |    4  13   5   6  10   5  21   6    4
   4  |   3   7   8   3   4   4  15   6    2 |    5   8   9   5   7   3  17   7    4
   5  |   4   7   4   3   4   3  14   5    2 |    5   7   6   6   5   4  14   7    4
   6E |   4  16   7   5   5   4  30   5    3 |    9  20   6  11  10   8  33  11   10
   7E |   3  20   5   4   6   4  34   5    4 |   10  13  11  11  15  11  26  11   11
   9  |   3   8   4   4   4   4  11   7    2 |    5   9   6   6   8   4  13   9    5
  10  |   5   7   3   4   6   5  14   9    2 |    4   7   4   6   6   6  19   6    4
  14  |   4   4   5   4   4   4  13   4    2 |    3   5   6   4   4   2   8   3    2
  15  |   4   7   7   4   4   3  14  10    3 |   10   7   5   7   7   8  14   9    6
  16  |   3   7   7   5   4   5  18   6    2 |   34  37  37  34  34  36  41  37   35
  17  |   2  10   6   3   3   4  19   7    2 |    8  12   8   8   8   8  18   9    8
  18  |   5  11   4   7   4   3  17   6    3 |    6  12   8   7   8   7  18   8    6
  19  |   4  10   6   3   3   4  10   4    2 |    7  11  10   7   8   5  12   7    6
  21  |   3   7   6   4   4   4  17   4    2 |    6   9   5   5   6   4  22   8    5
  22  |   4   8   6   3   4   4  11   6    2 |    6  10   7   6   8   5  15   8    5
  23  |   3   6  10   3   4   5  13   5    2 |   22  23  23  22  23  24  30  25   23
  24  |   3   7   3   3   3   3  10   7    2 |    5   7   4   3   6   4  12   7    3
  25  |   3   7   4   5   4   3  15   7    2 |    4   6   6   4   6   4  20   6    3
  26  |   3   7   7   5   8   5  14   8    3 |    5   7   9   7   6   6  18   8    5
  27  |   5   5   8   3   4   4  11   7    2 |    4   6   5   6   8   3  11   6    4
  29  |   2   7   4   5   5   4  15   5    2 |    6  10   8   8  10   8  19  10    7
  30  |   3  13   6   4   9   5  12   7    3 |    5  10   5   5   9   5  12   9    4
  31E |   6  12   7   7   5   6  16   6    3 |    9  16  11  12  11  10  17   9    9
------|--------------------------------------|--------------------------------------
 RMS  |   4  10   6   5   5   4  17   6      |T  10  13  11  10  11  10  19  11   10
 WRMS |   4  10   6   5   5   4  19   6      |NE 10  12  11  10  11  10  18  12   10
 MEDI |   3   7   6   4   4   4  14   6      |MD  5  10   6   6   8   5  18   8    5

Table 3.0918.1   GPS week: 0918   Day: 1   MJD: 50671.0

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

Table 3.0918.2   GPS week: 0918   Day: 2   MJD: 50672.0

               Weighted Average                Orbit Dynamics (7 days)
 PRN  | cod emr esa gfz igr jpl ngs sio  IGS |  cod emr esa gfz igr jpl ngs sio  IGS
------|--------------------------------------|--------------------------------------
   1  |   4  15   4   6   5   5  20   6    3 |    5  12   6   8   8   5  18   7    5
   2  |   4   7   6   7   4   3  14   4    2 |    3   7   3   5   5   3  11   4    3
   3E |   2  13   7   5   7   4  13   6    2 |    4  14   3   6   8   4  18   6    4
   4  |   5  12   8   5   6   4  10  21    4 |    4   9   6   4   8   4  13  23    5
   5  |   3   9   5   7   4   4   9   5    2 |    3   9   4   5   6   4  11   4    3
   6E |   3  22   9   7   5   7  20   6    4 |    7  21  11   9  11   7  20   9    7
   7E |   3  21  12   5   6   2  25   7    4 |   11  19   9  12  15  12  29  11   12
   9  |   3   7   5   5   5   4  10   6    2 |    2   7   6   6   8   4   8   5    3
  10  |   2   7   6   4   4   2  15   7    2 |    4   7   4   5   6   4  19   5    3
  14  | --- ---   1 --- --- --- --- ---    0 |  --- ---   0 --- --- --- --- ---  ---
  15  |   4   5   7   3   4   3   9   6    2 |    5   7   5   5   5   5  13   8    4
  16  |   3   7   8   5   5   4  13   7    2 |   40  40  42  38  40  40  40  38   39
  17  |   3   8   3   4   4   3  15   6    2 |    7  14   8   8  11   9  21  10    8
  18  |   2  10   4   4   5   3  15   7    2 |    6  13   8   7  10   7  18   9    7
  19  |   3   6   5   4   4   7  12   4    2 |    6   9   7   7   8   7  13   6    5
  21  |   3   8   4   3   5   3  13   5    2 |    5   8   5   4   8   4  14   6    4
  22  |   5  13   7   5   6   4  21  12    3 |    6  12   6   6   7   4  20  13    4
  23  |   5   7   7   5   4   4  13   8    3 |   25  26  23  25  28  28  32  27   26
  24  |   4   9   6   3   5   2  12   7    2 |    3   7   5   4   6   3  10   7    3
  25  |   4  13   5   6   5   4  12   5    3 |    4  11   5   5   6   4  10   5    3
  26  |   4   6   5   3   4   4  15  10    2 |    4   6   7   6   6   5  15   9    4
  27  |   4   5   5   5   4   4   9   6    2 |    3   7   6   6   6   4   8   6    4
  29  |   4   8   6   7   4   5  18   6    3 |    4  10   7   8   8   5  19   7    5
  30  |   3  13   4   4   8   2  11   6    2 |    4  14   3   5   8   3  13   5    3
  31E |   6  15   8   6   6   4  18   7    3 |   10  16  11  12  12  10  18  11   10
------|--------------------------------------|--------------------------------------
 RMS  |   4  11   6   5   5   4  15   8      |T  10  14  11  11  12  11  18  12   10
 WRMS |   4  11   6   5   5   4  16   6      |NE 11  14  11  11  12  11  18  13   11
 MEDI |   4   9   6   5   5   4  13   6      |MD  5  11   6   6   8   5  17   7    4

Table 3.0918.3   GPS week: 0918   Day: 3   MJD: 50673.0

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

Table 3.0918.4   GPS week: 0918   Day: 4   MJD: 50674.0

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

Table 3.0918.5   GPS week: 0918   Day: 5   MJD: 50675.0

               Weighted Average                Orbit Dynamics (7 days)
 PRN  | cod emr esa gfz igr jpl ngs sio  IGS |  cod emr esa gfz igr jpl ngs sio  IGS
------|--------------------------------------|--------------------------------------
   1  |   3  10   5   4   5   5  18   9    3 |    6   8   5   7   4   6  16  10    5
   2  |   4   7   9   5   7   5  13   7    3 |    4   9   7   5   7   6  11   6    4
   3E |   2  13   6   7   9   5  22   6    3 |    4  12   6   7  10   6  24   6    4
   4  |   5   9   6   5  11   3  12   6    2 |    5   8   8   6  11   4  13   7    3
   5  |   3  13   5   5   5   2  13   5    2 |    4  10   4   7   6   4  13   5    4
   6E |   5   9  11   4   8   6  20   8    3 |    7  14   6   8  11   9  19   8    7
   7E |   3  14  11   6   6   7  27  10    4 |    8  16  11   9  12   8  32   8    8
   9  |   2   7   7   4   6   3  13   7    2 |    4  10   6   4   7   4  16   7    4
  10  |   6  11   6   6   3   3  16   8    3 |    5   9   5   4   6   5  13   9    4
  14  |  11   7   9   9   7   5  25   8    4 |   14  11  16  15  11  13  21  13   13
  15  |   4   3   4   3   7   3  16   6    2 |    6   7   6   6   9   5  18   8    4
  16  |  10 --- --- ---  31  10 ---  12    8 |    0 --- --- ---   0   0 ---   0  ---
  17  |   3   8   4   5   4   4  12  10    2 |   11  14  14  11   9   9  14  14   10
  18E |   6  13  10   5   6   6  26   8    4 |    7  13  11   5   9   4  20   9    5
  19  |   6   8   9   4   5   4  12   7    3 |   13  12  16  13  14  11  18  17   13
  21  |   4   9   6   3   5   5  11   8    2 |    5   8   9   5   6   5  13   7    4
  22  |   3  10   9   6   8   4  14   7    3 |    5  10   7   5  10   6  15   7    4
  23  |   4   5   6   8   6   3  16   9    3 |   14  14  14  14  14  15  19  15   13
  24  |   3  11   7   4  10   3  17  10    3 |    5   9   7   4   8   5  16   8    3
  25  |   3  12   5   5   7   3  12   7    2 |    3  12   5   4   6   5   9   7    3
  26E |   4   7   8   5   8   3  24  11    3 |    6  10  10   9   9   7  19  12    7
  27  |   4   6   7   3   7   5   9   6    2 |    4   8   6   5   6   3  10   7    3
  29E |   3  17   4   5   5   5  16   8    3 |    3  22   5   7   8   4  15   8    4
  30  |   2   6   8   4   7   3  17   7    2 |    3   7   5   4   9   5  14   9    4
  31E |   6  12   7   5   6   3  13   6    3 |   26  27  28  28  27  25  32  26   26
------|--------------------------------------|--------------------------------------
 RMS  |   5  10   7   5   9   5  17   8      |T   8  12  10   9  10   8  18  10    8
 WRMS |   4  10   7   5   7   5  18   8      |NE  7   9   9   7   8   7  14   9    6
 MEDI |   4   9   7   5   7   4  16   8      |MD  5  10   7   7   9   6  16   8    4

Table 3.0918.6   GPS week: 0918   Day: 6   MJD: 50676.0

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

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 4.0918   GPS week: 0918   MJD: 50670.0-50676.0

CENT| CLK EPO  |      BRUS      |      USUD      |      WILL      |
----|----------|----------------|----------------|----------------|
cod | cod 2386 |U  41   48   95 |U  34   22   87 |   22   13   46 |
emr | emr 2305 |   42   49   97 |   35   24   92 |U  22   13   46 |
esa | esa 2057 |   55   44   94 |U  55   36  119 |   39   31   67 |
gfz | gfz 1162 |   45   61  101 |U  34   23   86 |   25   17   52 |
igr | igr 2352 |   40   47   95 |   37   24   97 |   23   15   51 |
igs | igs 2395 |   41   47   92 |   38   25   97 |   32   17   57 |
jpl | jpl 2351 |U  42   49   96 |U  34   22   93 |   24   15   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 5.0918.0   GPS week: 0918   Day: 0   MJD: 50670.0

CENT| CLK EPO  |      BRUS      |      USUD      |      WILL      |
----|----------|----------------|----------------|----------------|
cod | cod 2400 |   24   94   56 |   42   24  100 |   24   13   44 |
emr | emr 2400 |   25   93   51 |   40   23  105 |   24   12   43 |
esa | esa 1989 |   61   74   46 |   76   42  152 |   33   40   54 |
gfz | gfz 1196 |   26  125   59 |   31   18   66 |   28   17   51 |
igr | igr 2398 |   23   86   48 |   43   25  112 |   26   15   48 |
igs | igs 2400 |   22   88   38 |   45   25  111 |   25   14   44 |
jpl | jpl 2384 |   21   92   44 |   41   22  106 |   27   15   44 |

Table 5.0918.1   GPS week: 0918   Day: 1   MJD: 50671.0

CENT| CLK EPO  |      BRUS      |      USUD      |      WILL      |
----|----------|----------------|----------------|----------------|
cod | cod 2400 |   38   23   83 |   36   21   88 |   25   15   41 |
emr | emr 2392 |   37   25   84 |   37   20   93 |   25   14   40 |
esa | esa 2191 |   43   27   81 |   54   31  117 |   32   25   56 |
gfz | gfz 1150 |   42   30   95 |   43   24   89 |   28   16   45 |
igr | igr 2399 |   37   24   83 |   39   19   97 |   25   14   41 |
igs | igs 2400 |   36   24   79 |   40   21   96 |   25   15   42 |
jpl | jpl 2286 |   38   23   85 |   37   19   92 |   30   18   42 |

Table 5.0918.2   GPS week: 0918   Day: 2   MJD: 50672.0

CENT| CLK EPO  |      BRUS      |      USUD      |      WILL      |
----|----------|----------------|----------------|----------------|
cod | cod 2304 |   34   41  103 |   26   18   95 |   22   13   48 |
emr | emr 2293 |   31   42  113 |   24   20   97 |   23   14   50 |
esa | esa 2260 |   49   49   99 |   44   32  130 |   67   32  101 |
gfz | gfz 1152 |   24   43   97 |   27   25  108 |   22   14   53 |
igr | igr 2304 |   32   45  106 |   24   19   96 |   23   13   50 |
igs | igs 2368 |   34   43  101 |   36   30  120 |   64   28   94 |
jpl | jpl 2283 |   33   44  106 |   25   19  100 |   26   16   51 |

Table 5.0918.3   GPS week: 0918   Day: 3   MJD: 50673.0

CENT| CLK EPO  |      BRUS      |      USUD      |      WILL      |
----|----------|----------------|----------------|----------------|
cod | cod 2399 |   35   23   89 |   28   17   79 |   18   11   53 |
emr | emr 2393 |   34   26   88 |   28   21   91 |   18   11   53 |
esa | esa 2180 |   46   25   99 |   51   30   98 |   24   16   66 |
gfz | gfz 1152 |   44   32   98 |   41   26  109 |   28   20   56 |
igr | igr 2400 |   34   25   89 |   30   19   93 |   18   11   54 |
igs | igs 2400 |   34   24   88 |   32   20   88 |   19   11   56 |
jpl | jpl 2384 |   34   23   90 |   31   19   92 |   21   12   54 |

Table 5.0918.4   GPS week: 0918   Day: 4   MJD: 50674.0

CENT| CLK EPO  |      BRUS      |      USUD      |      WILL      |
----|----------|----------------|----------------|----------------|
cod | cod 2399 |   40   46   93 |   41   31  102 |   20   14   44 |
emr | emr 2373 |   38   46   93 |   42   31  106 |   19   14   44 |
esa | esa 2020 |   69   30   91 |   53   37  112 |   33   32   53 |
gfz | gfz 1181 |   39   59   89 |   32   26   85 |   22   18   50 |
igr | igr 2400 |   38   47   91 |   41   31  104 |   19   15   46 |
igs | igs 2400 |   40   48   90 |   42   32  104 |   20   14   45 |
jpl | jpl 2377 |   40   48   93 |   40   31  108 |   23   16   47 |

Table 5.0918.5   GPS week: 0918   Day: 5   MJD: 50675.0

CENT| CLK EPO  |      BRUS      |      USUD      |      WILL      |
----|----------|----------------|----------------|----------------|
cod | cod 2399 |   33   25   85 |   28   16   66 |   19   12   47 |
emr | emr 2075 |   37   27   89 |   22   16   65 |   20   14   46 |
esa | esa 1968 |   37   36   84 |   53   26  107 |   25   28   62 |
gfz | gfz 1119 |   27   23   74 |   22   16   68 |   24   17   59 |
igr | igr 2225 |   32   26   81 |   28   18   77 |   19   16   59 |
igs | igs 2400 |   32   26   82 |   28   16   69 |   18   13   48 |
jpl | jpl 2376 |   32   26   82 |   27   16   68 |   18   14   50 |

Table 5.0918.6   GPS week: 0918   Day: 6   MJD: 50676.0

CENT| CLK EPO  |      BRUS      |      USUD      |      WILL      |
----|----------|----------------|----------------|----------------|
cod | cod 2400 |   70   42  137 |   34   24   74 |   23   13   47 |
emr | emr 2206 |   74   48  136 |   44   33   80 |   26   14   43 |
esa | esa 1789 |   71   46  135 |   49   47  111 |   39   35   62 |
gfz | gfz 1184 |   84   52  162 |   36   26   65 |   23   16   50 |
igr | igr 2341 |   68   45  139 |   45   32   96 |   31   19   54 |
igs | igs 2400 |   70   44  137 |   39   28   85 |   25   16   50 |
jpl | jpl 2369 |   74   46  145 |   31   23   75 |   23   14   50 |

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 SIGMA: Sigma of AC LOD BIAS (us)                          
                                                                               
         FLAG: "u" (used), "x" (excluded), "-" (no submission)                 
               for Xpole, Ypole, Xrt, Yrt and LOD                              

Table 3.0918   GPS week: 0918   MJD: 50670.5-50676.5
                                                     AC LOD   AC LOD
CENT  FLAG  |  Xpole  Ypole    Xrt    Yrt    LOD |    BIAS  BIAS SIGMA
------------------------------------------------------------------------
cod   uuuuu |     -3     12      6     -2     24 |      -6     19
            |     15     10     19     23     59 |       1
emr   uuuuu |      4    -52    -34      2      1 |      -2     40
            |      8     17     39     66     24 |       3
esa   uuuuu |     18      0     33     20     -3 |      19     18
            |     17     26     15     44     24 |       2
gfz   uuuuu |     -9     -2     10     -7     -4 |      19     26
            |      7     16      8     13     23 |       2
igr   xxxxx |    -12     -4     -1      2    -10 |       5     26
            |     15     17     36     19     11 |       3
jpl   uuuuu |     14     18    -27     -5     -8 |     -50     29
            |      8     15     15     16     33 |       2
ngs   uuuuu |    -35    -35     46     93      0 |      73     64
            |     29     39    104     47     25 |       5
sio   uuuuu |    -15    -12     -3     -6     -9 |      -3     54
            |     13     13     17     32     51 |       6
                                                                               
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 SIGMA: Sigma of AC LOD BIAS (us)                          
                                                                               
         FLAG: "u" (used), "x" (excluded), "-" (no submission)                 
               for Xpole, Ypole, Xrt, Yrt and LOD                              

Table 4.0918.0   GPS week: 0918   Day: 0   MJD: 50670.5
                                                     AC LOD   AC LOD
CENT  FLAG  |  Xpole  Ypole    Xrt    Yrt    LOD |    BIAS  BIAS SIGMA
------------------------------------------------------------------------
cod   uuuuu |    -11     12    -18    -19    -23 |      -8     19
emr   uuuuu |     12    -55    -46     12     15 |      -5     42
esa   uuuuu |     15     33     34      3    -10 |      16     17
gfz   uuuuu |    -13    -13      9      3    -11 |      19     27
igr   xxxxx |     -8     13     20    -11    -25 |       6     28
jpl   uuuuu |     20     10    -18      6     -2 |     -55     33
ngs   uuuuu |     -5    -12     58     87     22 |      64     69
sio   uuuuu |     -9     -8     18    -19     54 |      -6     58

Table 4.0918.1   GPS week: 0918   Day: 1   MJD: 50671.5
                                                     AC LOD   AC LOD
CENT  FLAG  |  Xpole  Ypole    Xrt    Yrt    LOD |    BIAS  BIAS SIGMA
------------------------------------------------------------------------
cod   uuuuu |    -18      2     -6      4      8 |      -7     18
emr   uuuuu |      7    -69    -15     17     40 |      -3     42
esa   uuuuu |     41     27     40    -19     27 |      17     16
gfz   uuuuu |    -13     29     12    -25     -4 |      20     26
igr   xxxxx |     -1    -27     -2      8     -6 |       7     28
jpl   uuuuu |     17     -3     -8     18    -39 |     -52     31
ngs   uuuuu |    -38    -79    -91    159     39 |      69     67
sio   uuuuu |    -10    -21     -6    -17      5 |      -1     57

Table 4.0918.2   GPS week: 0918   Day: 2   MJD: 50672.5
                                                     AC LOD   AC LOD
CENT  FLAG  |  Xpole  Ypole    Xrt    Yrt    LOD |    BIAS  BIAS SIGMA
------------------------------------------------------------------------
cod   uuuuu |    -10      5     32      8     18 |      -5     19
emr   uuuuu |      4    -54    -91      3    -33 |       3     41
esa   uuuuu |     31      0     33    -47     14 |      20     19
gfz   uuuuu |     -7      0      2    -18    -21 |      22     25
igr   xxxxx |    -10      8     -6     24    -10 |       9     27
jpl   uuuuu |      9     14    -23     -4     -8 |     -50     28
ngs   uuuuu |    -45     -1    -28    146    -16 |      78     61
sio   uuuuu |     -6     -6      1     22     24 |       3     56

Table 4.0918.3   GPS week: 0918   Day: 3   MJD: 50673.5
                                                     AC LOD   AC LOD
CENT  FLAG  |  Xpole  Ypole    Xrt    Yrt    LOD |    BIAS  BIAS SIGMA
------------------------------------------------------------------------
cod   uuuuu |      1     30     10    -23     14 |      -5     19
emr   uuuuu |     -4    -24    -15     44      5 |      -2     38
esa   uuuuu |     -6    -31     44     19     -8 |      20     19
gfz   uuuuu |     -2     -8     16     12    -42 |      21     26
igr   xxxxx |     -6     -9    -34     -8    -15 |       6     25
jpl   uuuuu |     26     13    -39     -9     14 |     -50     27
ngs   uuuuu |    -87    -38    -15     34     12 |      76     61
sio   uuuuu |     -4      0    -12    -23     31 |       3     55

Table 4.0918.4   GPS week: 0918   Day: 4   MJD: 50674.5
                                                     AC LOD   AC LOD
CENT  FLAG  |  Xpole  Ypole    Xrt    Yrt    LOD |    BIAS  BIAS SIGMA
------------------------------------------------------------------------
cod   uuuuu |     15     15     27    -17      5 |      -5     19
emr   uuuuu |     10    -35    -22    -45      6 |      -2     38
esa   uuuuu |      5    -36      2     77      8 |      19     19
gfz   uuuuu |     -8    -14     -1     -2     18 |      17     26
igr   xxxxx |    -17    -25     -3      0      5 |       4     25
jpl   uuuuu |      2     36    -26    -18     -8 |     -49     27
ngs   uuuuu |    -48     -8     46     97    -25 |      76     61
sio   uuuuu |    -14    -19      7     -5    -25 |       0     52

Table 4.0918.5   GPS week: 0918   Day: 5   MJD: 50675.5
                                                     AC LOD   AC LOD
CENT  FLAG  |  Xpole  Ypole    Xrt    Yrt    LOD |    BIAS  BIAS SIGMA
------------------------------------------------------------------------
cod   uuuuu |     19      2    -11    -10     -9 |      -4     19
emr   uuuuu |     -9    -68     23   -113    -19 |      -2     38
esa   uuuuu |      9      2     30     61     -9 |      19     19
gfz   uuuuu |    -19    -14     22     -2     20 |      18     26
igr   xxxxx |    -42      3    -46    -24    -19 |       2     25
jpl   uuuuu |     12     41    -53     -2     41 |     -49     27
ngs   uuuuu |     -9     -7    213     46    -23 |      75     62
sio   uuuuu |    -25      3    -34     48    -74 |      -4     51

Table 4.0918.6   GPS week: 0918   Day: 6   MJD: 50676.5
                                                     AC LOD   AC LOD
CENT  FLAG  |  Xpole  Ypole    Xrt    Yrt    LOD |    BIAS  BIAS SIGMA
------------------------------------------------------------------------
cod   uuuuu |    -16     16      7     43    154 |      -5     19
emr   uuuuu |      5    -60    -73     97     -7 |      -4     39
esa   uuuuu |     33      4     46     42    -47 |      18     20
gfz   uuuuu |      2      8     11    -18     15 |      19     26
igr   xxxxx |      1     10     63     27      2 |       0     25
jpl   uuuuu |     15     12    -20    -30    -58 |     -48     27
ngs   xxxxx |    -15    -98    139     83     -8 |      74     62
sio   uuuuu |    -39    -36      5    -49    -77 |     -14     48

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