[IGSREPORT-8191] Wk 1108 IGS Final Orbits

robert.weber at aiub.unibe.ch robert.weber at aiub.unibe.ch
Fri Apr 20 12:04:07 PDT 2001


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IGS Electronic Report   20 Apr 12:04:19 PDT 2001      Message Number 8191
******************************************************************************

Author:  AC Coordinator / AIUB/CODE

Final IGS Orbit Combination - Week 1108   (Apr 01, 2001 - Apr 07, 2001)

Contacts: R. Weber (rweber at luna.tuwien.ac.at),
          U. Hugentobler (urs.hugentobler at aiub.unibe.ch),
          H. Bock (bock at aiub.unibe.ch), R. Dach (dach at aiub.unibe.ch)

COMBINATION STRATEGY:

For a complete description of combination strategy, please refer to the report
posted on CDDIS (IGS11087.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:

 IGS11080-6.SP3  IGS GPS ephemeris files for days 0-6, week 1108 in SP3 format.
 IGS11087.ERP    Earth Rotation Parameters (ERP) and their rates as well as
                 Universal Time (UT1-UTC) and Length Of Day (LOD) associated 
                 with IGS ephemerides.
 IGS11087.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. Rapid ("IGR") orbits/clocks are included in the combination for statistics
   only.

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

4. The following clock solutions were excluded from the combination because
   they were biasing the combined clock solutions (clock shifts/outliers)
   but were kept for the RMS computation.

                  Day | Centre | PRN/STA list
                  ----+--------+---------------
                   0  |  COD   |  SANT
                   0  |  ESA   |  FORT MCM4 VILL
                   0  |  GFZ   |  MATE ONSA SANT WUHN
                   0  |  JPL   |  MCM4 TSKB
                   1  |  EMR   |  YELL
                   1  |  ESA   |  GOLD MCM4 TIDB
                   1  |  GFZ   |  KERG MATE WUHN
                   1  |  JPL   |  EISL SANT YAR2 YELL
                   2  |  COD   |  YELL
                   2  |  ESA   |  26 CHAT GUAM 
                   2  |  ESA   |  KWJ1 MCM4 SANT SUTH TIDB USNO YAR2 YELL
                   2  |  GFZ   |  KERG MATE WUHN
                   2  |  JPL   |  EISL GUAM SANT
                   3  |  ALL   |  17
                   3  |  COD   |  GUAM KOKB
                   3  |  EMR   |  FAIR
                   3  |  ESA   |  21 22 CHAT FORT GOLD MCM4 TIDB YAR2
                   3  |  GFZ   |  KERG MATE WUHN
                   3  |  JPL   |  GUAM
                   4  |  COD   |  GALA SANT
                   4  |  EMR   |  1 3 8 11 13 14 18 20 28
                   4  |  ESA   |  22 GOLD MCM4 TIDB YAR2
                   4  |  GFZ   |  KERG KWJ1 MATE WUHN
                   5  |  COD   |  GUAM SANT
                   5  |  EMR   |  3
                   5  |  ESA   |  2 5 22 23 30 ALGO GOLD MCM4 TIDB
                   5  |  GFZ   |  KERG MATE WUHN
                   5  |  JPL   |  FORT SANT
                   6  |  ESA   |  22 23 ALGO GOLD TIDB
                   6  |  GFZ   |  KERG MATE WUHN
                   6  |  JPL   |  11 EISL YAR2

5. 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
               ----+-----+------------+-----------
                10 |  2  | 2001_04_03 | 2001050 (Predicted)

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
                  ----+--------+---------------
                   0  |  NGS   |  17
                   5  |  ESA   |  17
                   6  |  JPL   |  11
                   6  |  ESA   |  23

7. Velocity changes were estimated for the following satellites to
   alleviate the effects of modeling problems, experienced by all centres,
   in the Long Arc (LA) process:

                  ---------+---------------
                  PRN list | 10 15 17 21 23 
                  ---------+---------------

8. Starting on 04-June-2000 (GPS Week 1065, day 0, MJD 51699) all IGS 
   products, including the IGS combined orbits, are based on the IGS
   realization of the ITRF97 reference frame (IGS97). For more information
   see IGSMAILs #2899 and #2904.

9. Small rotations were applied to the all AC orbit and ERP values in order
   to align them to the IGS97. These rotations were estimated in the process
   of the IGS SINEX combination, performed at NRCan by Remi Ferland, are based 
   on the common stations between the individual AC SINEX solutions and the 
   IGS00P04_RS51.snx SINEX. The estimated 7 transformations, from which only 
   the 3 rotations are applied to the orbit and ERP values, are:

            |    DX     DY     DZ      RX     RY     RZ     SCL  
     Centre |   (cm)   (cm)   (cm)   (mas)  (mas)  (mas)   (ppb) 
     -------+---------------------------------------------------
       COD  |  +0.52  +0.22  -0.10   +0.02  -0.08  +0.00   +2.21
       EMR  |  -0.62  +0.04  +3.50   +0.01  -0.03  -0.02   +1.87
       ESA  |  -1.20  +1.35  -0.56   +0.14  +0.06  -0.03   +3.07
       GFZ  |  -0.14  -0.02  -0.36   -0.08  -0.00  -0.14   +2.57
       JPL  |  +0.45  -0.00  -3.22   -0.02  -0.01  +0.02   +2.50
       NGS  |  -3.56  +0.28  -5.93   +0.05  +0.39  +0.06   +1.25
       SIO  |  +0.04  +0.07  +6.07   -0.11  +0.18  +0.10   +2.29

10.Starting on 22-Oct-2000 (GPS Week 1085, day 0; mjd=51839) all IGS clock
   products are based on the new clock combination scheme which uses the
   the clock RINEX files as input if available, otherwise SP3 clocks are used. 
   The navigation solution is still based on the SP3 clocks but this will
   soon adopt the clock RINEX files as well.

11.Starting on 27-Feb-2000 (GPS Week 1051, day 0; MJD 51601) the IGS final 
   products are aligned to the IGS reference frame products (station 
   coordinates and ERPs) as generated by NRCan. For more information see 
   IGSMAIL #2750.
   Because of this change in alignment Table 2 has been enhanced with one 
   additional line per AC. This additional line shows the X- and Y-rotations 
   which were applied to each of the AC orbits prior to the orbit combination. 
   These rotations are based on the difference between the individual AC ERP 
   estimates and the IGS reference frame ERP product. The total rotation of
   the individual AC orbits w.r.t. the IGS combined orbit is the sum of the
   values in the two lines of Table 2 plus the reference frame rotation.

12.Starting on 29-Nov-1998 (GPS Week 986, day 0; MJD 51146) all IGS clock
   products reflect the use of the following antenna phase center offsets
   (satellite fixed reference frame):

     Block II/IIA: 0.279 0.000 1.023  X, Y, Z in meters
     Block IIR   : 0.000 0.000 0.000  X, Y, Z in meters

ORBIT COMBINATION AND EVALUATION STATISTICS:

For a complete description of tables and statistics, please refer to the report
posted on CDDIS (IGS11087.SUM).


Table 1: Week 1108 summary.                       (Apr 01, 2001 - Apr 07, 2001)

Table 1.1108.a   GPS week: 1108   MJD: 52000.0-52006.0

         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  127|0.00 0.00 0.00  0.02  0.12 -0.14 -0.2 0.03 0.03 |    1.8   -2.9   0.08
        |0.00 0.00 0.00  0.04  0.03  0.13  0.0           |    1.1    3.1
emr  37 |0.00 0.00 0.02 -0.08  0.01 -0.34  0.4 0.07 0.06 |  728.0   11.6   0.12
        |0.01 0.01 0.02  0.08  0.08  0.19  0.1           | 1035.9    1.4
esa  57 |0.00 0.00 0.00 -0.22 -0.05 -0.07  0.4 0.07 0.06 |   84.3    8.9   0.10
        |0.01 0.00 0.01  0.13  0.06  0.12  0.1           |   76.1    4.5
gfz  64 |0.00 0.00 0.00  0.03  0.03  0.18 -0.1 0.02 0.02 |    0.1   -0.1   0.05
        |0.00 0.00 0.00  0.03  0.01  0.07  0.0           |    0.7    1.0
igr  n/a|0.00 0.00 0.00 -0.05 -0.01 -0.05  0.0 0.03 0.03 |    0.1   -0.1   0.09
        |0.00 0.00 0.00  0.04  0.04  0.07  0.0           |    0.3    0.2
jpl  42 |0.00 0.00 0.00 -0.01  0.03 -0.03  0.4 0.05 0.05 |    1.2   -1.6   0.08
        |0.01 0.00 0.01  0.07  0.05  0.06  0.0           |    0.9    4.4
ngs  73 |-.01 0.00-0.03  0.10 -0.51  0.07  0.3 0.09 0.09 |    0.1   -0.2   4.31
        |0.01 0.01 0.01  0.09  0.08  0.16  0.3           |    0.3    0.2
sio  38 |0.00 0.00-0.01  0.04 -0.13  0.20 -0.7 0.05 0.05 |    0.0    0.0   0.00
        |0.00 0.01 0.00  0.06  0.02  0.26  0.1           |    0.0    0.0

Table 1.1108.b   GPS week : 1108   MJD: 52000.0-52006.0

         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  |   1   1   1   1   3   2   2 |
   2  |   2   2   2   2   2   2   2 |
   3  |   2   2   2   2   2   2   2 |
   4  |   1   1   1   1   2   2   1 |
   5  |   1   1   2   2   2   2   2 |
   6  |   2   2   2   2   1   2   2 |
   7  |   1   1   1   2   1   2   2 |
   8  |   1   1   2   1   2   2   2 |
   9  |   1   2   1   2   2   2   2 |
  10  |   2   2   0   1   2   1   2 |
  11  |   2   2   2   2   2   2   9 |
  13  |   2   2   2   2   2   2   2 |
  14  |   2   2   2   2   2   2   3 |
  15  |   5   7   3   4 ---   3   5 |
  17  |   0  14   2   5   9   8   8 |
  18  |   3   3   2   3   3   3   4 |
  19  |   2   2   1   2   2   2   2 |
  20  |   2   2   2   2   2   2   2 |
  21  |   1   2   1   1   2   2   7 |
  22  |   1   1   2   2   2   2   1 |
  23  |   2   3   2   2   3   3   5 |
  24  |   1   2   1   2   1   2   2 |
  25  |   1   2   1   2   2   2   2 |
  26  |   2   2   2   2   2   2   2 |
  27  |   2   2   2   1   1   1   2 |
  28  |   2   2   2   2   2   2   2 |
  29  |   2   2   2   2   2   2   2 |
  30  |   1   1   1   2   2   2   2 |
  31  |   2   1   1   2   2   1   2 |

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 2.1108.0   GPS week: 1108   Day: 0   MJD: 52000.0

CENT STA|  DX   DY   DZ    RX    RY    RZ  SCL  RMS WRMS |   TOFT  TDRFT    RMS
--------|------------------------------------------------|---------------------
cod  127|0.00 0.00 0.00  0.06  0.07  0.12 -0.3 0.03 0.03 |    0.3    1.9   0.08
        |               -0.18  0.23                      |
emr  38 |0.00 0.01-0.01 -0.17 -0.07 -0.28  0.5 0.05 0.05 | 2238.1   11.3   0.06
        |               -0.01  0.02                      |
esa  57 |0.00 0.00 0.00 -0.21  0.02  0.05  0.4 0.05 0.05 |   74.4   10.8   0.08
        |               -0.05 -0.10                      |
gfz  64 |0.00 0.00 0.00  0.04  0.04  0.06 -0.1 0.02 0.02 |    1.5   -1.9   0.06
        |                0.11 -0.01                      |
igr  n/a|0.00-0.01 0.00 -0.07  0.00 -0.10 -0.1 0.03 0.03 |    0.4   -0.1   0.07
        |               -0.09  0.00                      |
jpl  42 |0.00 0.01 0.01 -0.01  0.11  0.07  0.4 0.03 0.03 |    1.8   -3.7   0.06
        |               -0.09  0.01                      |
ngs  73 |-.01 0.01-0.02  0.05 -0.63 -0.05  0.0 0.07 0.07 |    0.3   -0.2   4.85
        |               -0.62 -0.31                      |
sio  40 |0.00-0.01-0.01  0.03 -0.10 -0.27 -0.8 0.05 0.05 |    0.0    0.0   0.00
        |                0.11  0.00                      |

Table 2.1108.1   GPS week: 1108   Day: 1   MJD: 52001.0

CENT STA|  DX   DY   DZ    RX    RY    RZ  SCL  RMS WRMS |   TOFT  TDRFT    RMS
--------|------------------------------------------------|---------------------
cod  127|0.00 0.00 0.00  0.06  0.13 -0.10 -0.2 0.03 0.03 |    1.7   -2.4   0.08
        |               -0.09  0.18                      |
emr  38 |0.00-0.01 0.01 -0.09  0.08 -0.47  0.3 0.07 0.06 | 2250.4   10.9   0.08
        |               -0.11  0.03                      |
esa  57 |0.00 0.00 0.01 -0.20 -0.08 -0.12  0.3 0.06 0.05 |   86.4   10.8   0.08
        |               -0.23 -0.07                      |
gfz  63 |0.00 0.00 0.00  0.04  0.04  0.21 -0.1 0.02 0.02 |    0.3   -0.5   0.04
        |                0.04 -0.01                      |
igr  n/a|0.00 0.00 0.00 -0.01  0.02 -0.02  0.0 0.04 0.03 |    0.0    0.0   0.09
        |               -0.17  0.07                      |
jpl  42 |0.01 0.00 0.01 -0.10  0.01 -0.03  0.4 0.03 0.03 |    1.4   -2.3   0.08
        |               -0.19 -0.02                      |
ngs  73 |0.00 0.00-0.04  0.20 -0.50 -0.06  0.1 0.08 0.08 |    0.5   -0.6   4.61
        |               -0.78 -0.19                      |
sio  39 |0.00 0.00 0.00  0.02 -0.18  0.13 -0.9 0.05 0.05 |    0.0    0.0   0.00
        |                0.04  0.04                      |

Table 2.1108.2   GPS week: 1108   Day: 2   MJD: 52002.0

CENT STA|  DX   DY   DZ    RX    RY    RZ  SCL  RMS WRMS |   TOFT  TDRFT    RMS
--------|------------------------------------------------|---------------------
cod  127|0.00 0.00 0.00  0.02  0.11 -0.20 -0.2 0.03 0.03 |    2.4   -4.4   0.07
        |               -0.12  0.10                      |
emr  37 |0.00-0.01 0.01 -0.05 -0.08 -0.36  0.5 0.07 0.07 |   97.8   13.6   0.10
        |                0.06  0.00                      |
esa  57 |0.00 0.00 0.00 -0.46 -0.14  0.04  0.5 0.08 0.07 |  -79.2   -0.8   0.12
        |               -0.04 -0.05                      |
gfz  63 |0.00 0.00 0.00  0.07  0.03  0.15 -0.1 0.02 0.02 |   -0.7    1.4   0.05
        |                0.08  0.00                      |
igr  n/a|0.01 0.00 0.00 -0.02 -0.09  0.04 -0.1 0.03 0.03 |    0.0    0.3   0.08
        |               -0.02  0.04                      |
jpl  42 |0.01 0.00 0.01  0.00  0.08 -0.12  0.5 0.03 0.03 |    2.2    2.3   0.07
        |                0.00  0.09                      |
ngs  73 |-.01 0.00-0.03  0.16 -0.48  0.07 -0.1 0.07 0.07 |   -0.2    0.0   3.89
        |               -0.57 -0.23                      |
sio  39 |0.01 0.01-0.01 -0.04 -0.12  0.39 -0.8 0.06 0.05 |    0.0    0.0   0.00
        |                0.02  0.02                      |

Table 2.1108.3   GPS week: 1108   Day: 3   MJD: 52003.0

CENT STA|  DX   DY   DZ    RX    RY    RZ  SCL  RMS WRMS |   TOFT  TDRFT    RMS
--------|------------------------------------------------|---------------------
cod  127|0.00 0.00 0.00  0.03  0.10 -0.28 -0.3 0.03 0.03 |    2.9   -3.7   0.06
        |               -0.16  0.10                      |
emr  38 |0.00 0.01 0.03 -0.12 -0.03 -0.40  0.4 0.05 0.05 |  110.6   12.7   0.10
        |                0.03  0.01                      |
esa  57 |0.00 0.00 0.01 -0.08 -0.02 -0.16  0.2 0.07 0.06 |  111.9   12.3   0.11
        |                0.01  0.01                      |
gfz  66 |0.00 0.00 0.00  0.08  0.04  0.26 -0.1 0.02 0.02 |   -0.4    0.3   0.05
        |                0.06 -0.03                      |
igr  n/a|0.00 0.00-0.01 -0.02 -0.02 -0.07  0.0 0.03 0.03 |    0.3   -0.5   0.08
        |               -0.02  0.08                      |
jpl  42 |0.00-0.01 0.00 -0.09  0.00 -0.03  0.4 0.03 0.03 |    0.7   -5.3   0.06
        |               -0.07  0.02                      |
ngs  73 |-.02 0.00-0.02  0.19 -0.47  0.39  0.2 0.09 0.09 |    0.1   -0.1   3.79
        |               -0.37 -0.47                      |
sio  39 |0.01 0.00-0.01  0.05 -0.13  0.40 -0.7 0.05 0.05 |    0.0    0.0   0.00
        |                0.04  0.02                      |

Table 2.1108.4   GPS week: 1108   Day: 4   MJD: 52004.0

CENT STA|  DX   DY   DZ    RX    RY    RZ  SCL  RMS WRMS |   TOFT  TDRFT    RMS
--------|------------------------------------------------|---------------------
cod  127|0.00 0.00 0.01 -0.02  0.12 -0.21 -0.2 0.03 0.03 |    1.1   -1.5   0.09
        |               -0.07  0.13                      |
emr  38 |-.01 0.01 0.07  0.02  0.13 -0.60  0.4 0.10 0.08 |  123.1    9.2   0.19
        |               -0.14 -0.09                      |
esa  57 |-.01-0.01-0.02 -0.14 -0.10 -0.26  0.4 0.07 0.07 |  122.0    9.0   0.12
        |               -0.20  0.05                      |
gfz  63 |0.00 0.00 0.00  0.03  0.05  0.18 -0.2 0.03 0.03 |   -0.1    0.2   0.04
        |                0.03 -0.04                      |
igr  n/a|0.00 0.00 0.00 -0.11  0.03 -0.19 -0.1 0.03 0.03 |   -0.5    0.2   0.10
        |                0.07 -0.08                      |
jpl  42 |0.00 0.00-0.01 -0.02  0.03  0.02  0.5 0.03 0.03 |    1.3    4.7   0.11
        |               -0.08 -0.02                      |
ngs  73 |-.02-0.01-0.04 -0.02 -0.51  0.12  0.2 0.09 0.09 |   -0.4    0.1   4.84
        |               -0.38 -0.19                      |
sio  38 |0.00 0.00 0.00  0.09 -0.12  0.47 -0.8 0.05 0.04 |    0.0    0.0   0.00
        |                0.04 -0.03                      |

Table 2.1108.5   GPS week: 1108   Day: 5   MJD: 52005.0

CENT STA|  DX   DY   DZ    RX    RY    RZ  SCL  RMS WRMS |   TOFT  TDRFT    RMS
--------|------------------------------------------------|---------------------
cod  127|0.00 0.00 0.00 -0.03  0.14 -0.12 -0.3 0.03 0.03 |    3.3   -8.2   0.08
        |               -0.08  0.12                      |
emr  38 |0.01 0.00 0.02  0.03  0.01 -0.01  0.4 0.06 0.06 |  132.6   11.1   0.13
        |               -0.19  0.13                      |
esa  57 |0.01 0.00 0.00 -0.31 -0.03 -0.11  0.4 0.07 0.06 |  131.2   11.1   0.09
        |               -0.23 -0.11                      |
gfz  61 |0.00 0.00 0.00  0.01  0.01  0.15 -0.1 0.03 0.03 |   -0.2    0.0   0.03
        |                0.12 -0.02                      |
igr  n/a|0.01 0.00 0.00 -0.03 -0.02 -0.05  0.0 0.03 0.03 |    0.1   -0.2   0.08
        |               -0.08 -0.11                      |
jpl  42 |-.01-0.01 0.00  0.04 -0.01 -0.05  0.5 0.03 0.03 |   -0.4   -7.7   0.08
        |                0.05 -0.01                      |
ngs  73 |-.01-0.01-0.03  0.12 -0.58  0.05  0.7 0.10 0.10 |   -0.1    0.0   4.03
        |               -0.41 -0.10                      |
sio  36 |0.00 0.01-0.01  0.14 -0.12  0.16 -0.6 0.05 0.05 |    0.0    0.0   0.00
        |               -0.03  0.00                      |

Table 2.1108.6   GPS week: 1108   Day: 6   MJD: 52006.0

CENT STA|  DX   DY   DZ    RX    RY    RZ  SCL  RMS WRMS |   TOFT  TDRFT    RMS
--------|------------------------------------------------|---------------------
cod  127|0.01 0.00 0.00 -0.01  0.14 -0.18 -0.2 0.03 0.03 |    1.0   -1.8   0.09
        |               -0.15  0.12                      |
emr  35 |0.00 0.00 0.04 -0.15  0.01 -0.26  0.4 0.07 0.07 |  143.3   12.4   0.12
        |               -0.10 -0.08                      |
esa  57 |0.01 0.01 0.00 -0.13  0.03  0.07  0.3 0.09 0.06 |  143.5    9.5   0.12
        |               -0.17 -0.18                      |
gfz  65 |0.00 0.00 0.00 -0.01  0.02  0.27 -0.2 0.03 0.03 |    0.2   -0.2   0.05
        |                0.10 -0.07                      |
igr  n/a|0.01 0.00 0.00 -0.05 -0.02  0.00  0.0 0.03 0.03 |    0.1   -0.1   0.10
        |               -0.13 -0.14                      |
jpl  42 |-.01 0.00-0.01  0.10  0.01 -0.09  0.4 0.11 0.11 |    1.7    0.8   0.09
        |               -0.10 -0.05                      |
ngs  73 |0.00 0.00-0.02 -0.03 -0.37 -0.02  0.7 0.10 0.10 |    0.2   -0.3   4.00
        |               -0.53 -0.17                      |
sio  36 |0.01 0.00 0.00  0.00 -0.12  0.08 -0.5 0.06 0.06 |    0.0    0.0   0.00
        |               -0.03 -0.04                      |

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.
         "X" stands for excluded from the combination but included in IGS orbit.
         "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 3.1108.0   GPS week: 1108   Day: 0   MJD: 52000.0

        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  |   2   3   3   2   3   3   8   4    1 |    4   5   6   5   6   4  11   8    5
   2  |   2   5   5   2   3   3   7   6    2 |    6   8  10   7   7   8  11   9    7
   3  |   3   6   6   3   4   3  10   8    2 |    5   3   5   5   5   5  10  10    5
   4  |   1   5   3   2   2   2   7   4    1 |    3   8   6   4   5   5   8   5    4
   5  |   3   5   3   1   2   2   7   4    1 |    6   7   7   6   6   6  11   8    6
   6  |   3   8   5   2   3   2   9   4    2 |    4   8   4   5   5   6  12   8    5
   7  |   2   3   4   2   3   3   8   3    1 |    4   5   5   5   6   5   9   7    4
   8  |   2   4   6   2   3   2   8   4    1 |    3   6   8   5   6   5  11   7    5
   9  |   3   5   4   2   3   2   7   5    1 |    3   4   3   5   4   4   8   8    4
  10  |   4   5   6   3   3   3   5   4    2 |    2   4   3   2   3   4   5   4    3
  11  |   2   5   6   3   3   7   6   7    2 |    2   7   9   5   6   7   7   8    4
  13  |   2   6   4   2   3   4   7   7    2 |    4   7   8   6   6   6  11   9    5
  14  |   4   7   3   3   2   4   6   6    2 |    4   8   7   6   6   5   7   9    5
 X15  |   2 --- --- ---  11 ---  11 ---    5 |    1 --- --- ---   4 ---   4 ---    2
 X17  |   1 --- --- ---  21 ---  28 ---    0 |   15 --- --- ---  18 ---  16 ---   15
 X18  |   2   6  10   3   4 ---   9   8    3 |    4   7  11   5   6 ---   7   7    5
  19  |   5   5   7   2   2   4   9   4    2 |    7   9   7   7   8   8  12   9    7
  20  |   3   7   4   3   4   4   8   5    2 |    4   7   6   5   5   6   8   6    5
  21  |   3   5   4   2   2   3   7   5    1 |    7   8   5  10   9   9   9   9    8
  22  |   3   5   5   1   3   3   6   5    1 |    5   7   6   5   7   6   8   7    6
 X23  |   5   6 ---   4   4   5   9   5    2 |    3   5 ---   6   4   4   6   4    3
  24  |   3   4   4   2   3   1   6   5    1 |    4   7   4   5   4   6   8   7    5
  25  |   2   5   5   2   2   2   7   4    1 |    3   5   7   4   5   4   6   7    4
  26  |   3   7   5   2   3   2   6   6    2 |    5   6   7   6   5   5   9   9    5
  27  |   2   6   6   2   2   2   9   4    2 |    3   4   8   5   5   5  10   7    5
  28  |   3   5   7   2   4   4   8   5    2 |    4   6   8   6   6   7   8   7    5
  29  |   4   5   5   3   1   3   5   6    2 |    5   6   9   6   6   5  11  11    6
  30  |   2   4   3   2   3   2   7   4    1 |    5   6   6   6   5   5  11   7    5
  31  |   2   5   9   2   3   3   8   4    2 |    4   4   6   5   6   4   7   6    4
------|--------------------------------------|--------------------------------------
 RMS  |   3   5   5   2   3   3   7   5      |T   5   6   6   5   6   5   9   7    5
 WRMS |   3   5   5   2   3   3   7   5      |NE  5   6   7   5   6   5   8   7    5
 MEDI |   3   5   5   2   3   3   7   5      |MD  4   6   7   5   6   5   9   7    5

Table 3.1108.1   GPS week: 1108   Day: 1   MJD: 52001.0

        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  |   2   3   4   2   4   2   6   4    1 |    3   5   3   3   5   3   7   5    3
   2  |   3   5   6   3   4   4   8   7    2 |    5   6   7   6   6   7   6   7    5
   3  |   2   6   5   2   2   3   8   7    2 |    3   5   4   3   3   4   9   5    3
   4  |   2   5   3   3   3   2   7   4    1 |    2   4   3   3   3   4   7   3    3
   5  |   2   8   5   1   2   3   6   3    1 |    5  10   5   5   5   5   7   7    5
   6  |   2   6   5   2   4   4  11   4    2 |    3   4   4   3   5   4  10   5    3
   7  |   2   4   4   2   4   2   8   3    1 |    3   5   3   3   4   3   7   4    3
   8  |   2   3   4   2   3   2   8   6    1 |    2   5   5   4   4   4   9   5    4
   9  |   3   5   3   3   5   3  10   7    2 |    2   5   3   3   6   5   7   8    3
  10  |   4   7   8   2   2   2  12   4    2 |    2   7   3   2   2   3   7   3    3
  11  |   2  11   6   3   3   6   5   8    2 |    3  10   7   3   4   6   6   7    3
  13  |   3   9   8   2   4   5   5   6    2 |    3   6   8   4   4   3   6   6    3
  14  |   4  10   4   3   6   6   8   6    2 |    3   5   3   4   6   3   8   8    3
 X15  |   4 --- --- ---  10 ---  15 ---    7 |    2 --- --- ---   3 ---   7 ---    2
 X17  |  16 --- --- ---  13  24  20 ---   14 |   33 --- --- ---  30   9  32 ---   26
 X18  |   2   9   8   3   3 ---  13   8    3 |    3   8   8   4   3 ---  10   7    4
  19  |   4   9   9   2   3   1   8   5    2 |    3   9   7   4   4   4   8   5    4
  20  |   2   9   4   3   3   4   9   7    2 |    3   6   5   4   5   4   9   9    4
  21  |   3   6   6   2   5   2   9   4    2 |    6   7   3   6   7   6   9   7    7
  22  |   3   5   4   1   2   2   7   4    1 |    6   9   7   6   7   6   8   7    6
 X23  |   5   8 ---   5   4   8  12   8    3 |    6   3 ---   5   4   4   8   6    4
  24  |   3   8   4   2   6   3   8   3    2 |    4   6   4   3   5   4   6   3    3
  25  |   3   5   8   2   2   3   5   6    2 |    3   6   6   3   4   4   7   7    4
  26  |   3   5   5   2   3   3  10   5    2 |    4   4   5   3   3   5  10   7    4
  27  |   2   4   6   2   3   3  11   5    2 |    2   5   5   3   3   4  10   4    4
  28  |   4   7   7   2   2   5   5   6    2 |    3   6   7   4   5   5   6   9    4
  29  |   3   6   5   3   4   4  10   6    2 |    4   5   6   4   5   3  12   5    4
  30  |   2   4   4   2   2   3   9   4    1 |    5   6   5   6   5   5   8   8    5
  31  |   2   5   7   2   2   3   5   3    1 |    2   4   4   3   3   3   4   4    2
------|--------------------------------------|--------------------------------------
 RMS  |   3   7   6   2   4   3   8   5      |T   7   6   5   4   7   4   9   6    6
 WRMS |   3   6   5   2   3   3   8   5      |NE  8   6   5   4   8   4  10   6    7
 MEDI |   3   6   5   2   3   3   8   5      |MD  3   6   5   4   4   4   8   6    4

Table 3.1108.2   GPS week: 1108   Day: 2   MJD: 52002.0

        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  |   2   4   4   1   3   2   8   5    1 |    3   5   4   3   4   3   8   7    3
   2E |   3   4   7   2   3   3  10   5    2 |    7  10   8   8   8   7  10   9    7
   3  |   2  10   5   1   3   2   7   9    2 |    4   7   4   4   4   4   8   7    4
   4  |   2   4   5   2   3   1   6   4    1 |    3   5   5   2   4   3   5   4    3
   5  |   2   7  12   2   2   3   7   5    2 |    8   8  10   8   7   8  12  10    8
   6  |   3   5   9   2   4   3   9   4    2 |    3   5  10   3   3   4   9   4    3
   7  |   3   5   9   2   3   2   7   3    1 |    3   5   8   4   5   3   6   5    3
   8  |   3   9   7   1   3   2   7   6    2 |    3   7   8   4   4   4   8   4    3
   9  |   2   5   6   1   2   2   7   4    1 |    2   4   3   3   3   2   5   6    2
 X10  | --- ---   3 --- --- --- --- ---    0 |  --- ---   0 --- --- --- --- ---  ---
  11  |   2   5   8   2   4   4   8   8    2 |    2   7  10   3   5   5   6   7    3
  13  |   2   7  10   2   4   6  11   6    2 |    3   6   9   4   5   3  10   8    3
  14  |   2   8   5   2   2   5   6   7    2 |    2   5   4   4   4   3   5   9    3
 X15  |   3 --- --- ---   5 ---   8   4    3 |    1 --- --- ---   3 ---   4   2    2
 X17  |   4   5 ---   3   4   4  11   4    2 |   18  10 ---   7  17  11  19   6   14
 X18  |   3   8   8   2   3 ---   9   8    2 |    3   4   8   4   5 ---   7   9    4
  19  |   3   4   6   1   4   3   4   4    1 |    3   5   5   4   5   3   9   5    3
  20  |   2   7  11   2   5   4   9   7    2 |    4   6   7   4   5   4   6   8    3
  21  |   2   4   7   2   2   2   6   5    1 |    6   6   4   7   6   5   7   6    6
  22E |   3  12  10   2   3   3   7   3    2 |    6  13   9   7   9   7   9   8    7
 X23  |   5   6 ---   4   3   4   6   7    2 |    4   2 ---   5   3   2   5   4    3
  24  |   3   6   8   2   4   1   6   4    1 |    5   7   8   5   7   6   8   6    5
  25  |   3   4   7   1   4   3   4   6    1 |    2   4   4   3   4   3   4   8    3
  26  |   3   7  18   2   2   4   6   7    2 |    5   7  15   4   4   4   9   9    4
  27  |   3   6   6   1   4   3  10   4    2 |    3   5   7   3   5   3   9   5    3
  28  |   3   9   4   2   3   4   6   6    2 |    3   6   6   5   6   5   7   8    4
  29  |   3   5   8   3   2   3   7   8    2 |    3   5   9   4   5   3   9   8    4
  30  |   3   5   5   2   3   2   7   5    1 |    4   5   6   5   5   4   8   8    4
 X31  |   1 ---   5   1   2   2   6   4    1 |    3 ---   5   3   2   3   7   3    3
------|--------------------------------------|--------------------------------------
 RMS  |   3   7   8   2   3   3   7   6      |T   5   6   7   4   5   4   8   6    4
 WRMS |   3   7   7   2   3   3   7   5      |NE  5   6   7   4   6   4   8   6    4
 MEDI |   3   6   7   2   3   3   7   5      |MD  3   6   7   4   5   4   8   7    3

Table 3.1108.3   GPS week: 1108   Day: 3   MJD: 52003.0

        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  |   2   4   3   2   2   2   8   5    1 |    5   9   5   5   5   4   9   7    4
   2E |   3   5   7   3   4   3   9   7    2 |    6   7  10   9   7   7  12   7    8
   3  |   2   5  11   2   2   2  10   8    2 |    4   4   5   4   3   4  12   7    3
   4  |   2   5   5   2   3   2   8   4    1 |    2   6   5   3   4   2   8   4    3
   5E |   3   6   6   4   2   3   9   4    2 |    6   8   8   9   7   7  10   7    7
   6  |   2   5  12   2   3   3   8   5    2 |    2   6  11   4   3   3  10   5    3
   7  |   3   6   5   2   3   2  12   3    2 |    4   7   5   4   5   2   8   4    3
   8  |   3   4   4   1   3   2   9   6    1 |    3   3   6   5   4   4  10   6    4
   9  |   3   4   7   2   3   2   8   4    2 |    2   3   6   4   4   3   7   6    3
  10  |   4   5   5   1   2   2   9   4    1 |    3   3   4   2   3   3   5   4    2
  11  |   2   5   7   4   4   4   9   8    2 |    2   5   7   4   4   5   6   7    3
  13  |   2   6   4   3   3   5  10   6    2 |    3   4   5   5   5   3   8   7    3
  14  |   3   7  11   3   3   5   8   6    2 |    2   5  12   3   3   3   7   6    2
 X15  |   3 --- --- ---   3 ---  13   4    4 |    1 --- --- ---   1 ---   7   2    1
 X17  |   8  11 ---   8   9  17  12   7    5 |   19   8 ---   8  18  13  19   6   16
 X18  |   3  11  11   4   3 ---  11   8    3 |    2   7   9   4   3 ---   8   6    3
  19  |   4   6   5   2   3   4  14   4    2 |    3   7   5   4   5   3  13   5    3
 X20  |   2   7   7   3   2 ---   9   7    2 |    3   4   5   3   3 ---   6   7    3
 X21  |   2   5 ---   2   2   2   9   4    1 |    9   8 ---  10   9   9  10   9    9
  22E |   3   4   6   3   2   3  10   4    2 |    7   7   8   7   7   6   7   8    6
 X23  |   5   8 ---   4   7   4  12   6    2 |    3   3 ---   4   5   3   7   3    3
  24  |   3   7   9   2   3   2   7   3    2 |    5   6   6   7   6   6   7   5    5
  25  |   3   7   9   3   2   2   8   6    2 |    3   4   9   3   3   4   8   7    3
  26  |   3   5   4   3   2   2   8   5    2 |    6   5  12   5   6   4   9   7    4
  27  |   3   4   4   1   4   2   8   5    1 |    2   4   5   4   5   3  10   5    3
  28  |   4   5   6   3   2   4   7   6    2 |    3   5   6   3   3   4   8   7    3
  29  |   3   5   6   2   2   2   6   7    2 |    4   5   7   4   4   4   9   7    4
  30  |   3   5   8   3   3   2   8   6    2 |    6   6   7   6   6   6   9   7    5
  31  |   2   6  10   2   2   2   7   3    2 |    3   5   7   4   4   3   6   2    2
------|--------------------------------------|--------------------------------------
 RMS  |   3   5   7   2   3   3   9   5      |T   5   5   7   5   5   5   9   6    5
 WRMS |   3   5   6   2   3   3   9   5      |NE  5   5   7   5   6   5   8   6    5
 MEDI |   3   5   6   3   3   2   9   5      |MD  3   5   6   4   4   4   8   6    3

Table 3.1108.4   GPS week: 1108   Day: 4   MJD: 52004.0

        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  |   2  28   6   3   6   3   6   4    3 |    4  20   4   3   6   4   7   6    3
   2E |   3  10   8   4   2   3   9   9    2 |   12  16  10  11  13  13  14  11   11
   3  |   2  12  11   3   4   3  12   7    2 |    4  12   8   3   3   3  10   6    3
   4  |   2   5  10   2   5   2   5   3    2 |    3   6   6   3   6   3   6   4    3
   5E |   3   7   7   4   3   3   9   5    2 |   11   9   9  10  11  11  14  13   10
   6  |   2   5   6   2   2   2  10   4    1 |    2   6   4   4   4   3   8   6    2
   7  |   3   7   7   2   3   2   6   2    1 |    3   6   4   3   5   4   7   4    3
   8  |   3  14   6   2   3   2   9   6    2 |    2  13   7   4   5   5   8   5    4
   9  |   3   8   8   3   2   2  12   4    2 |    2   5   5   5   5   4   9   7    3
  10  |   2   6   7   2   5   2   8   5    2 |    2   6   4   3   4   2   6   5    2
  11  |   3   9   8   3   4   4   8   5    2 |    3   8   7   3   4   6   8   6    3
  13  |   2  10   9   3   2   4   7   6    2 |    3   8   7   3   4   4   8   7    3
  14  |   3   9   5   3   3   6  10   6    2 |    2   7   5   3   4   3   6   7    2
 X17  |  15  15 --- ---  14  17  18 ---    9 |   36   9 --- ---  27   6  36 ---   30
 X18  |   4   9   6   4   5 ---  11  11    3 |    2   7   6   2   7 ---  11  11    3
  19  |   3   7   9   2   3   3   5   5    2 |    2   7   7   5   7   5   8   6    4
  20  |   3   8   5   3   3   3   9   4    2 |    3   7   6   4   3   3   7   5    3
 X21  |   3  10 ---   2   4   4   7   4    2 |    8  10 ---   8   8   8   9   7    8
  22E |   4   6   6   3   2   4  11   3    2 |   11  14  13  11  12  11  13  12   11
 X23  |   5   8 ---   5   8   5  14   9    3 |    3   4 ---   4   5   3   6   4    3
 X24  |   2   4 ---   2   4   2   7   3    1 |    4   6 ---   5   7   4   7   4    4
  25  |   4   5   9   2   3   4   8   6    2 |    3   5  11   5   7   5   8   8    4
  26  |   3   7   5   4   3   2  11   4    2 |    5   6   5   4   4   5  12   7    4
  27  |   2   7   5   2   2   2   7   4    1 |    2   7   6   4   4   5   8   4    3
  28  |   3   8   5   3   2   4   9   6    2 |    3   6   6   4   5   4   9   8    3
  29  |   3   6   9   3   3   4   6   7    2 |    2   6   9   4   5   4   7   8    4
  30  |   3   7   9   3   2   3   8   3    2 |    7  10  10   9   8   9  11   9    8
  31  |   2   7   5   2   3   2  10   4    2 |    3   6   4   3   5   3  11   4    3
------|--------------------------------------|--------------------------------------
 RMS  |   3  10   7   3   3   3   9   5      |T   8   9   7   5   8   5  11   7    7
 WRMS |   3   8   7   3   3   3   9   4      |NE  9   7   7   5   8   5  11   7    8
 MEDI |   3   8   7   3   3   3   9   5      |MD  3   7   6   4   5   4   8   6    3

Table 3.1108.5   GPS week: 1108   Day: 5   MJD: 52005.0

        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  |   2   5   5   2   3   3   8   7    2 |    3  11   3   4   3   3   6   6    2
   2E |   3   6   5   4   4   2  11   8    2 |    8   8   9   9   9   7  10   7    7
   3  |   2  11   7   1   2   3   9   6    2 |    2  11   5   2   4   3   6   4    3
   4  |   2   6   6   2   3   3   8   4    2 |    2   6   4   3   4   4   5   4    3
   5E |   2   5   5   3   2   3  11   3    2 |    9  10   5   8   8   8  12   8    8
   6  |   2   6   5   2   2   2  11   5    2 |    2   6   5   2   3   2   5   3    1
   7  |   3   5   5   2   3   2  10   5    2 |    3   4   5   3   3   3   6   5    2
   8  |   3   5   7   2   3   3  10   6    2 |    3   7   6   4   4   4  10   4    3
   9  |   2   5  13   2   3   3  13   4    2 |    2   5  10   3   5   3  11   4    2
 X10  |   3   6 ---   1   3   2   7   3    1 |    3   6 ---   2   3   3   6   3    2
  11  |   3   8   8   3   3   5  10   7    2 |    3   4   9   4   4  12   9   7    2
  13  |   2   8   6   2   2   4   8   7    2 |    3   6   7   4   4   4   9   7    3
  14  |   2   7   6   4   1   6  10   5    2 |    2   5   5   3   3   3   6   6    2
 X15  |   2 --- --- ---   4 ---   8   4    3 |    1 --- --- ---   4 ---   8   1    3
 X17  |  12  13  34  12  13 ---  20  11    8 |   17  13   2   4  15 ---  14   3   13
 X18  |   3   8   9   3   4 ---  11  11    3 |    4   6   8   3   4 ---   7  10    3
  19  |   2   7   6   2   3   4   6   5    2 |    3   9   5   3   5   5   6   6    4
  20  |   3   9   6   2   5   4   6   5    2 |    2   8   6   3   5   3   4   5    2
  21  |   3   7  10   2   3   4   5   7    2 |    7   7   4   7   8   8   9   8    7
  22E |   2   6   6   3   5   4  14   4    2 |    8  12   9   9  13   9  16  12    9
 X23  |   4  10 ---   5   5   6  11   7    3 |    5   4 ---   4   5   4   7   7    4
  24  |   2   6   6   2   3   2  10   3    2 |    4   7   4   5   5   6   6   6    4
  25  |   3   6   6   4   2   2  10   6    2 |    3   5   5   4   3   3   8   5    2
  26  |   3   8  11   2   2   2  13   4    2 |    3   5   8   3   3   3   9   5    2
  27  |   2   4   5   2   2   2  10   4    1 |    3   6   5   3   4   4  11   3    3
  28  |   3   7   7   3   3   4   9   7    2 |    3   9   8   4   5   4   7   8    4
  29  |   2   4  10   3   2   3  10   6    2 |    3   4   7   3   3   3  10   6    3
  30E |   4   6   9   4   2   4  13   3    2 |    6   6   5   6   5   5   9   5    5
  31  |   3   5   5   2   5   3   6   4    1 |    3   5   8   2   6   4   6   3    3
------|--------------------------------------|--------------------------------------
 RMS  |   3   6   7   3   3   3  10   5      |T   5   7   6   4   5   5   8   6    4
 WRMS |   3   6   6   3   3   3  10   5      |NE  5   7   6   4   6   5   8   6    4
 MEDI |   3   6   6   2   3   3  10   5      |MD  3   6   5   4   4   4   8   5    3

Table 3.1108.6   GPS week: 1108   Day: 6   MJD: 52006.0

        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  |   2   6   3   2   2   6   7   5    2 |    4   8   6   5   5   7   9   8    5
   2E |   3   8   5   3   3   5   8   6    2 |    9  15   8  10   9   9  12   7    9
   3  |   3   5  10   3   1   3   9   7    2 |    5   7   7   4   4   5   9   7    3
   4  |   2   6   5   2   4   3   7   4    1 |    3   7   4   4   7   5   6   4    4
   5E |   3   8   8   3   2   3  10   4    2 |    9  10   9   9   9   9  10   9    8
   6  |   2   8   5   2   3   4  11   4    2 |    2   6   5   4   5   5   8   6    3
   7  |   2   6  10   3   3   6  12   3    2 |    3   6   7   5   5   6   7   5    3
   8  |   2   4   4   2   2   4   9   6    2 |    4   6   6   6   6   6   7   6    5
   9  |   3   7   6   1   2   4  14   6    2 |    3   6   5   5   6   5  10   9    4
  10  |   2   4   4   3   3   6   8   5    2 |    2   4   4   2   3   6   6   4    2
  11  |   2   9  10   4   7  50  10   8    9 |    3   8   9   4   6  14   9   7    3
  13  |   2   6   6   3   2   7   7   6    2 |    4   5   6   5   5   5   9   8    4
  14  |   3  12   4   3   5   6  14   8    3 |    2   5   4   4   6   5  14  10    3
 X15  |   2 --- --- ---   6 ---  11 ---    5 |    1 --- --- ---   5 ---   9 ---    2
 X17  |   4  18 --- ---  17 ---  21 ---    8 |   22  14 --- ---  20 ---  23 ---   22
 X18  |   4  11  18   3   3 ---  12   9    4 |    3   8  18   4   7 ---  11  11    6
  19  |   2   7   9   2   2   6   7   6    2 |    2   6   9   5   6   7   7   6    4
  20  |   2   8   4   3   4   5   6   6    2 |    1   6   4   4   5   6   6   5    3
 X21  |  11  14 --- ---  12  20  11  12    7 |   12  11 --- ---  13  11  14  14   12
  22E |   3   3   5   2   3   3   7   4    1 |   12  11  13  12  11  11  11  11   11
  23  |   3   8  33   3   4   5  12   6    5 |    4   4   1   5   5   4   7   5    4
  24  |   3   7   5   2   3   4  10   4    2 |    3   6   5   4   6   5   6   5    4
  25  |   4   5   8   2   3   3  10   5    2 |    3   6  11   5   6   6   8   9    4
  26  |   3   7  10   2   2   4   9   5    2 |    5   6   8   5   5   5  10   7    4
  27  |   1   4   7   3   2   4  10   4    2 |    3   6   8   6   6   6   8   5    4
  28E |   3   7   7   3   6   4   7   9    2 |    3   8   8   4   6   6   7  10    4
  29  |   2   6   5   3   6   5  12  10    2 |    5   4   6   5   7   6  15  11    5
  30E |   3   7  10   3   3   3  16   4    2 |   10  10  10  11  10   9  10  12   10
  31  |   3   8   4   2   2   3   9   4    2 |    3  10   4   5   6   7  10   5    4
------|--------------------------------------|--------------------------------------
 RMS  |   3   7   9   3   3  11  10   6      |T   6   7   7   5   7   7  10   8    6
 WRMS |   3   7   6   3   3  11  10   6      |NE  7   7   8   5   8   7  10   8    7
 MEDI |   3   7   6   3   3   4  10   6      |MD  3   6   7   5   6   6   9   7    4

 
Table 4: Precise Navigation Summary.

         Weekly station RMS w.r.t. the estimated 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 4.1108   GPS week: 1108   MJD: 52000.0-52006.0

CENT| CLK EPO  |      BRUS      |      TOW2      |      WILL      |
----|----------|----------------|----------------|----------------|
cod | cod 2670 |U   1    1    3 |U   2    2    5 |U   3    3    4 |
emr | emr 2606 |    2    2    4 |    4    4    9 |    4    6    7 |
esa | esa 2428 |    3    2    5 |    4    9   13 |    4    5    8 |
gfz | gfz 2589 |    2    2    4 |U   2    2    5 |    3    5    7 |
igr | igr 2728 |    2    2    4 |    2    3    5 |    3    4    5 |
igs | igs 2636 |    2    2    4 |    2    2    4 |    4    3    5 |
jpl | jpl 2514 |    2    2    4 |    2    3    5 |    5    7   11 |


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 estimated 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 5.1108.0   GPS week: 1108   Day: 0   MJD: 52000.0

CENT| CLK EPO  |      BRUS      |      TOW2      |      WILL      |
----|----------|----------------|----------------|----------------|
cod | cod 2716 |    1    1    2 |    1    1    4 |    6    3    6 |
emr | emr 2592 |    1    2    3 |    2    4    4 |    6   11    7 |
esa | esa 2496 |    2    1    3 |    2    4    5 |    7    9   17 |
gfz | gfz 2592 |    1    1    2 |    2    2    4 |    6    8   11 |
igr | igr 2767 |    2    2    4 |    1    2    4 |    6    7    8 |
igs | igs 2592 |    1    1    2 |    1    2    4 |    8    5    8 |
jpl | jpl 2496 |    2    2    3 |    2    3    5 |    7   14   15 |

Table 5.1108.1   GPS week: 1108   Day: 1   MJD: 52001.0

CENT| CLK EPO  |      BRUS      |      TOW2      |      WILL      |
----|----------|----------------|----------------|----------------|
cod | cod 2710 |    1    1    3 |    1    1    3 |    2    4    4 |
emr | emr 2592 |    2    2    5 |    2    2    4 |    4    8   11 |
esa | esa 2496 |    2    2    4 |    2    2    4 |    2    2    4 |
gfz | gfz 2591 |    1    2    5 |    1    2    3 |    3    4    5 |
igr | igr 2677 |    2    2    5 |    1    2    3 |    2    4    8 |
igs | igs 2670 |    1    2    4 |    1    2    3 |    2    3    4 |
jpl | jpl 2592 |    2    2    4 |    1    2    3 |    4    3    6 |

Table 5.1108.2   GPS week: 1108   Day: 2   MJD: 52002.0

CENT| CLK EPO  |      BRUS      |      TOW2      |      WILL      |
----|----------|----------------|----------------|----------------|
cod | cod 2605 |    1    2    6 |    1    2    4 |    2    1    2 |
emr | emr 2496 |    2    2    6 |    2    2    4 |    3    3    4 |
esa | esa 2467 |    2    2    8 |    4    3    7 |    2    2    5 |
gfz | gfz 2582 |    2    2    6 |    1    2    3 |    2    3    3 |
igr | igr 2679 |    2    2    5 |    2    2    4 |    2    3    4 |
igs | igs 2592 |    2    1    6 |    1    2    3 |    2    2    3 |
jpl | jpl 2496 |    2    2    6 |    1    2    3 |    4    5    8 |

Table 5.1108.3   GPS week: 1108   Day: 3   MJD: 52003.0

CENT| CLK EPO  |      BRUS      |      TOW2      |      WILL      |
----|----------|----------------|----------------|----------------|
cod | cod 2673 |    1    1    3 |    1    1    4 |    1    1    3 |
emr | emr 2667 |    2    2    4 |    2    2    4 |    3    4    4 |
esa | esa 2380 |    3    2    6 |    3    8    9 |    4    3    4 |
gfz | gfz 2669 |    2    2    5 |    1    1    4 |    2    6   11 |
igr | igr 2775 |    1    1    4 |    1    2    4 |    2    3    4 |
igs | igs 2591 |    1    2    4 |    2    2    4 |    2    4    5 |
jpl | jpl 2487 |    2    3    5 |    2    2    4 |    4    9   15 |

Table 5.1108.4   GPS week: 1108   Day: 4   MJD: 52004.0

CENT| CLK EPO  |      BRUS      |      TOW2      |      WILL      |
----|----------|----------------|----------------|----------------|
cod | cod 2600 |    1    1    2 |    2    2    5 |    2    3    6 |
emr | emr 2610 |    1    3    5 |    2    2    7 |    4    7   10 |
esa | esa 2279 |    4    1    6 |    6   17   19 |    2    3    6 |
gfz | gfz 2575 |    1    2    4 |    2    1    5 |    2    4    7 |
igr | igr 2681 |    1    2    3 |    2    2    7 |    3    2    6 |
igs | igs 2680 |    2    3    3 |    2    2    6 |    2    2    5 |
jpl | jpl 2576 |    1    2    4 |    2    2    5 |    3    4    7 |

Table 5.1108.5   GPS week: 1108   Day: 5   MJD: 52005.0

CENT| CLK EPO  |      BRUS      |      TOW2      |      WILL      |
----|----------|----------------|----------------|----------------|
cod | cod 2654 |    1    1    3 |    1    2    5 |    1    2    4 |
emr | emr 2657 |    2    2    3 |    2    2    6 |    3    4    4 |
esa | esa 2445 |    2    2    4 |    7   10   24 |    2    3    4 |
gfz | gfz 2646 |    1    1    3 |    2    2    6 |    2    3    3 |
igr | igr 2748 |    2    1    3 |    2    2    7 |    3    7    3 |
igs | igs 2665 |    1    1    2 |    1    1    5 |    2    3    3 |
jpl | jpl 2478 |    2    1    2 |    2    2    6 |    6    6   12 |

Table 5.1108.6   GPS week: 1108   Day: 6   MJD: 52006.0

CENT| CLK EPO  |      BRUS      |      TOW2      |      WILL      |
----|----------|----------------|----------------|----------------|
cod | cod 2733 |    2    1    3 |    3    3    6 |    2    3    3 |
emr | emr 2626 |    3    3    3 |    8    7   20 |    4    5    6 |
esa | esa 2434 |    3    3    5 |    2   12   12 |    3    7    5 |
gfz | gfz 2470 |    2    2    3 |    3    4    7 |    3    4    6 |
igr | igr 2766 |    2    2    4 |    4    5    8 |    2    2    3 |
igs | igs 2664 |    2    2    3 |    3    2    6 |    2    2    3 |
jpl | jpl 2474 |    3    3    4 |    2    4    6 |    3    3    4 |

                                                                               
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 6.1108   GPS week: 1108   MJD: 52000.5-52006.5
                                                     AC LOD   AC LOD
CENT  FLAG  |  Xpole  Ypole    Xrt    Yrt    LOD |    BIAS  BIAS RMS  
------------------------------------------------------------------------
cod   uuuuu |    -20     13      2      0     -1 |     -15     22
            |      4      5      7      8      8 |       1
emr   uuuuu |     -1      7      5    -10     -4 |      42     45
            |      6      8     30     29     16 |       2
esa   uuuuu |     15     26      3      5     -9 |      38     42
            |      7      9     18     29      9 |       2
gfz   uuuuu |      5    -17      0      4    -10 |      13     20
            |      0      3      4     12      8 |       2
igr   xxxxx |      4      6    -13      0      2 |       6     23
            |      7      7     12     14      4 |       2
irf   xxxxx |      2     -1      1      2     -2 |      -2     14
            |      2      3      7      6      6 |       2
jpl   uuuuu |      1      4     -6     -5     12 |     -12     26
            |      4      6     14     18     18 |       3
ngs   xxxxx |     65     56   -110    -37    -27 |      11     58
            |     13     14     54     78     65 |       6
sio   uuuuu |     20    -14      1      3     13 |     -24     29
            |      2      6      8     11      6 |       5

                                                                               
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 7.1108.0   GPS week: 1108   Day: 0   MJD: 52000.5
                                                     AC LOD   AC LOD
CENT  FLAG  |  Xpole  Ypole    Xrt    Yrt    LOD |    BIAS  BIAS RMS  
------------------------------------------------------------------------
cod   uuuuu |    -27     20      0    -11     -4 |     -17     24
emr   uuuuu |      0      2     18    -27      1 |      42     45
esa   uuuuu |     20     19     13     34      3 |      39     44
gfz   uuuuu |      5    -19     -1     11      4 |      10     20
igr   xxxxx |      4     10    -19     -5      5 |       3     22
irf   xxxxx |      4      0      1      1      7 |      -5     16
jpl   uuuuu |      2      7     -7    -10    -14 |     -13     26
ngs   xxxxx |     74     67    -30   -107   -117 |      22     56
sio   uuuuu |     23    -22    -11      3     21 |     -32     37

Table 7.1108.1   GPS week: 1108   Day: 1   MJD: 52001.5
                                                     AC LOD   AC LOD
CENT  FLAG  |  Xpole  Ypole    Xrt    Yrt    LOD |    BIAS  BIAS RMS  
------------------------------------------------------------------------
cod   uuuuu |    -23      6      8     -6     -5 |     -16     23
emr   uuuuu |     -2      8     27     18    -17 |      43     46
esa   uuuuu |     16     32    -22      3    -16 |      40     44
gfz   uuuuu |      5    -17     -7      4     -7 |      12     20
igr   xxxxx |     -3     13    -12     -5      7 |       4     22
irf   xxxxx |      3     -5     -3      0     -4 |      -3     14
jpl   uuuuu |      5     12      0    -18     20 |     -15     26
ngs   xxxxx |     62     78    -78   -121    -86 |      16     59
sio   uuuuu |     17    -20      3     16     14 |     -29     33

Table 7.1108.2   GPS week: 1108   Day: 2   MJD: 52002.5
                                                     AC LOD   AC LOD
CENT  FLAG  |  Xpole  Ypole    Xrt    Yrt    LOD |    BIAS  BIAS RMS  
------------------------------------------------------------------------
cod   uuuuu |    -14     17      8      7      0 |     -16     23
emr   uuuuu |      1     -1      5     42     -8 |      43     46
esa   uuuuu |     15     22     19    -45     -2 |      39     43
gfz   uuuuu |      4    -13      5     -7    -10 |      12     21
igr   xxxxx |      0      6    -12    -17     -1 |       4     23
irf   xxxxx |      4      4      3     -3     -5 |      -3     15
jpl   uuuuu |     -6      2    -27      4     10 |     -14     27
ngs   xxxxx |     66     65    -87    -30    -77 |      10     57
sio   uuuuu |     20     -9     -2     -7     15 |     -26     32

Table 7.1108.3   GPS week: 1108   Day: 3   MJD: 52003.5
                                                     AC LOD   AC LOD
CENT  FLAG  |  Xpole  Ypole    Xrt    Yrt    LOD |    BIAS  BIAS RMS  
------------------------------------------------------------------------
cod   uuuuu |    -16     17      6      6     -9 |     -14     21
emr   uuuuu |     -1     -2    -14    -14    -27 |      43     46
esa   uuuuu |      8     12    -17     39    -21 |      40     44
gfz   uuuuu |      5    -15      4     18     -7 |      14     21
igr   xxxxx |     -6      2      3      2      6 |       7     23
irf   xxxxx |      2      0     10      8     -6 |      -1     14
jpl   uuuuu |     -1      5     -6    -32     28 |     -12     26
ngs   xxxxx |     88     41   -147    -48    -10 |       8     58
sio   uuuuu |     18    -15     16      1     18 |     -23     30

Table 7.1108.4   GPS week: 1108   Day: 4   MJD: 52004.5
                                                     AC LOD   AC LOD
CENT  FLAG  |  Xpole  Ypole    Xrt    Yrt    LOD |    BIAS  BIAS RMS  
------------------------------------------------------------------------
cod   uuuuu |    -20      7      6     -6     -8 |     -14     20
emr   uuuuu |      7     13    -46    -32     -3 |      41     45
esa   uuuuu |      2     31     27     21    -18 |      39     43
gfz   uuuuu |      5    -13      3      7    -15 |      15     20
igr   xxxxx |      8     -9    -16     28      1 |       8     23
irf   xxxxx |      1     -2      9     10     -2 |       0     13
jpl   uuuuu |      1      4     -9     -5     34 |      -9     25
ngs   xxxxx |     59     41    -86     97     20 |       7     58
sio   uuuuu |     22    -17      3      8      9 |     -20     26

Table 7.1108.5   GPS week: 1108   Day: 5   MJD: 52005.5
                                                     AC LOD   AC LOD
CENT  FLAG  |  Xpole  Ypole    Xrt    Yrt    LOD |    BIAS  BIAS RMS  
------------------------------------------------------------------------
cod   uuuuu |    -17     10     -6     10      5 |     -15     21
emr   uuuuu |    -13     21     49    -39     19 |      40     42
esa   uuuuu |     20     38      3    -10     -4 |      36     40
gfz   uuuuu |      5    -19     -2    -17    -19 |      14     19
igr   xxxxx |     14      9     -3     -2      1 |       8     23
irf   xxxxx |      3      1    -11     -6     -8 |      -1     13
jpl   uuuuu |      3     -6     -9     26     17 |      -9     26
ngs   xxxxx |     52     47   -174    -80     45 |       5     57
sio   uuuuu |     21     -7     -6     12      5 |     -19     25

Table 7.1108.6   GPS week: 1108   Day: 6   MJD: 52006.5
                                                     AC LOD   AC LOD
CENT  FLAG  |  Xpole  Ypole    Xrt    Yrt    LOD |    BIAS  BIAS RMS  
------------------------------------------------------------------------
cod   uuuuu |    -22     14     -9      0     14 |     -15     21
emr   uuuuu |      3      9     -2    -18     10 |      39     42
esa   uuuuu |     22     28     -4     -6     -5 |      34     38
gfz   uuuuu |      4    -21     -2     13    -15 |      12     19
igr   xxxxx |     12     10    -34      0     -3 |       7     22
irf   xxxxx |     -2     -2     -3      2      5 |      -2     13
jpl   uuuuu |      2      6     20     -2     -8 |      -9     26
ngs   xxxxx |     54     55   -171     29     36 |       6     57
sio   uuuuu |     20    -11      3    -14     13 |     -18     23



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