[IGSREPORT-20416] Wk 1665 IGS Final Orbits

Jim Ray igs.acc at noaa.gov
Thu Dec 22 07:01:22 PST 2011


Author:  AC Coordinator / NOAA NGS

sum-file Version 2.0
Final IGS Orbit Combination - Week 1665   (Dec 04, 2011 - Dec 10, 2011)

Contacts: J. Ray       (jim.ray at noaa.gov),
          J. Griffiths (jake.griffiths at noaa.gov)


COMBINATION STRATEGY:
---------------------

Starting with GPS week 860, the IGS Final orbit combination is done directly
in the ITRF without any alignment to the Bulletin B EOP series.

Each centre satellite clock corrections are first transformed to a common 
reference. One of the following two methods can be used (the REMARKS section of
this report gives which method is used):
[1] For each centre, a clock offset and a drift are estimated with respect to
    the broadcast clock corrections using only non-SA satellites;
[2] A chosen reference centre is aligned to the broadcast clock corrections
    using all satellites. All other centres are then aligned to that reference
    centre. 
The offsets and drifts are used to align each centre satellite clock
corrections to GPS time. Ephemerides and clock corrections are then combined
as weighted averages computed over all centres. Each centre is given a
position weight and a clock weight. The position weights are computed from
each centre's absolute deviation to the unweighted average orbit after the
estimation of a 7-parameter Helmert transformation. The clock weights are
either computed from [1] the absolute deviation of the initial alignment to
broadcast clock for the non-SA satellites, or [2] from the absolute deviation
of centre's aligned clock corrections with respect to the unweighted mean.
Finally, a 7-parameter Helmert transformation and clock offset and drift are
estimated for each centre with respect to the combined solutions and parameters
and RMS of fit reported. All the above estimations are performed using the
L1-norm robust scheme.

  Each centre ephemerides are also evaluated individually and independently from
the orbit combination by using week long arcs. The Earth Orientation Parameters
(EOP) used in this evaluation are those submitted by the respective centres.
The IGS combined orbits/clocks and all centres providing both orbit and clock 
solutions are further evaluated by an independent point positioning (navigation)
program that uses both phase and pseudorange data. This is primarily intended 
for testing clock solution precision as well as the orbit/clock consistency.

 Like the clock solutions broadcast in the navigation message, the combined
satellite clocks are corrected for the periodical relativistic correction (see
e.g. GPS interface Control document ICD-GPS-200, p.73):

                              -2*(X.V)/c  [distance unit],

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


SOFTWARE:
---------

The weighted average software used was 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 (as part of the separate SINEX combination since GPS
week 1051; weighted according to the orbit combination before that time). 

  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:

igs1665[0-6].sp3  IGS GPS ephemeris files in SP3 format.
igs1665[0-6].clk  IGS GPS satellite and station clocks in clock RINEX format.
igs1665[0-6].cls  IGS GPS clock combination summary report.
igs16657.erp      Earth Rotation Parameters (ERP) and their rates as well as
                  Universal Time (UT1-UTC) and Length Of Day (LOD) associated 
                  with IGS ephemerides.
igs16657.sum      Complete report.

    
REMARKS concerning the IGS Orbit Combination:                                  
---------------------------------------------

 1. The centres used in the clock combination are COD, EMR, ESA, GFZ, MIT, and
    JPL. The other centres are excluded because of poorer consistency (GRG),
    they 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.
    Starting week 1582, a new solution from CNES/GRGS (GRG) is included with
    weight except for the clock and LOD combinations.

 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.  Duplicate entries can arise due to separate
    combination runs for the 30-s clocks ACs (listed first) and the 5-min clock
    ACs (listed second).
    
               Day | Centre | PRN/STA list
               ----+--------+---------------
                0  |  COD   | MOBS MOBS
                0  |  ESA   | MATE KOUR UNSA
                0  |  GFZ   | 12 16 25 28 29 IISC KARR KERG MDVJ
                0  |  GRG   | KOUR MAW1
                0  |  JPL   | 27 29 AREQ
                0  |  MIT   | 27 30 8 27 30 DAV1 DAV1
                1  |  COD   | XMIS
                1  |  ESA   | NICO UNSA
                1  |  GFZ   | 12 16 25 28 BRUS MDVJ
                1  |  GRG   | KOUR
                1  |  JPL   | AREQ
                1  |  MIT   | 12 27 28 30 10 12 27 28 30 DAV1 DAV1 KOUR
                2  |  ESA   | KOUR UNSA
                2  |  GFZ   | 12 16 25 28 BRUS
                2  |  GRG   | KOUR LPGS
                2  |  JPL   | AREQ
                2  |  MIT   | 2 4 12 27 2 4 12 27 DAV1 DAV1 NYAL
                3  |  ESA   | FLIN KOUR UNSA
                3  |  GFZ   | 2 12 16 25 27 28 ARTU COCO KARR NRIL TSKB
                3  |  GRG   | AMC2 KOUR
                3  |  JPL   | AREQ
                3  |  MIT   | 1 6 7 8 11 21 27 1 6 7 8 11 21 27 KHAJ NICO KHAJ
                4  |  COD   | WROC
                4  |  ESA   | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20
                4  |  ESA   | 21 22 23 25 26 27 28 29 30 31 32 1 2 3 4 5 6 7 8
                4  |  ESA   | 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 25 26
                4  |  ESA   | 27 28 29 30 31 32 KOUR
                4  |  GFZ   | 12 16 25 28 ALGO IRKT MDVJ
                4  |  GRG   | KOUR USN3
                4  |  JPL   | AREQ
                4  |  MIT   | 1 2 3 27 1 2 3 27 DAV1
                5  |  COD   | KARR
                5  |  EMR   | WUHN
                5  |  ESA   | KOUR POTS UNSA
                5  |  GFZ   | 12 16 25 28 BRFT COCO MDVJ NKLG OPMT RAMO
                5  |  JPL   | ABMF AREQ
                5  |  MIT   | 27 30 10 27 30 NICO AUCK BAKO DARW HOB2 NICO TIDB
                6  |  COD   | MOBS MOBS NRMD
                6  |  ESA   | KOUR NKLG UNSA
                6  |  GFZ   | 12 16 25 28 BRFT MDVJ TIDB
                6  |  GRG   | KOUR USN3
                6  |  JPL   | 30 AREQ
                6  |  MIT   | 27 29 30 31 27 29 30 31 DAV1 WUHN DAV1 WUHN

    
 5. New clock offsets and drifts were estimated for centres showing reference
    clock resets.  Note that only the largest clock offset and drift are output
    to the summary file.  However, the clock combination and the listed RMS
    include all the clock segments.  In summary, the following clock
    shifts/resets were noticed and accounted for:
    
               Day | Centre |  Time  |  Jump
               ----+--------+--------+-------------
                2  |  MIT   | ~19:33 | ~ 0.30 ns

 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
               ----+--------+---------------
                5  |  GRG   |  25

 7. Velocity changes were estimated to alleviate the effects of modeling
    problems, experienced by all centres,in the Long Arc (LA) process.
    
             Velocity changes per day and affected satellites:
    
               Day |  0 |  1 |  2 |  3 |  4 |  5 |  6 |
           --------+----+----+----+----+----+----+----+
           PRN G25 |    |    |    |    |    |  4 |    |

 8. Starting 5-Nov-2006 (GPS Week 1400, day 0, MJD 54044) until 16-Apr-2011
    (GPS Week 1631, day 6, MJD 55667) all IGS products, including the IGS
    combined orbits, are based on the IGS realization of the ITRF2005 reference
    frame (IGS05).   For more information see IGSMAIL #5447.  The IGS05 frame
    is also the basis for the homogeneously reprocessed IGS products from GPS
    Weeks 730 to 1459 (1994-2007); see IGSMAIL #6136.
    Starting 17-Apr-2011 (GPS Week 1632, day 0, MJD 55668) all IGS products,
    are based on the IGS realization of the ITRF2008 reference frame (IGS08).
    For more information see IGSMAIL #6354.
    

 9. Small rotations were applied to all the AC orbit and ERP values in order
    to align them to the current IGS reference frame. These rotations were
    estimated in the IGS SINEX combination process, performed by the IGS Reference
    Frame Coordinator at the Institut Geographique National (IGN). 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 |   [mm]   [mm]   [mm]   [uas]  [uas]  [uas]   [ppb]
     -------+---------------------------------------------------
       COD  |     .5     .6    -.1     -55    -11     25     .08
       EMR  |    3.7    6.0   11.3       0      7      9     .19
       ESA  |    3.6    3.4   -8.6      99   -171     96     .12
       GFZ  |    -.7    1.1    -.7     -35    -15     -3     .08
       GRG  |    3.8    1.4   -6.8     -33     16      5    -.01
       JPL  |    2.3    6.5    9.0     -13    -50     33     .26
       MIT  |    6.6    1.8   -5.7     -19     11    -37     .17
       NGS  |   12.0    4.4   -2.4      45    -88     81     .29
       SIO  |    1.8    1.5   18.0     -17     11     27     .06


10. Starting on 22-Oct-2000 (GPS Week 1085-0; mjd=51839) all IGS clock products
    are based on the new clock combination scheme which uses 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 1051-0; MJD 51601) the IGS final products
    are aligned to the IGS reference frame products (station coordinates and
    ERPs as generated by IGN). 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 5-Nov-2006 (GPS Week 1400, day 0, MJD 54044) until 16-Apr-2011
    (GPS Week 1631, day 6, MJD 55667) the absolute antenna model is introduced
    (IGSMAIL #5438). The antenna phase center offsets and phase center
    variations are given in the file:
        ftp://igs.org/igscb/station/general/igs05.atx
    These antenna calibrations are also used in the homogeneously reprocessed
    IGS products from GPS Weeks 730 to 1459 (1994-2007); see IGSMAIL #6136.
    Starting 17-Apr-2011 (GPS Week 1632, day 0, MJD 55668) the absolute antenna
    model is updated (IGSMAIL #6255 & #6374) as given in the file:
        ftp://igs.org/igscb/station/general/igs08.atx
    The JPL solution did not use IGS08/igs08.atx until GPS Week 1649, which
    caused their RMS clock residuals to be higher during that period than for
    the other centres; since GPS Week 1632 the JPL solution is excluded from
    the weekly SINEX combination.

    
ORBIT COMBINATION AND EVALUATION STATISTICS:                                    
--------------------------------------------                                    
      
Most combination statistics are with respect to the combined orbits and
consist of five parts. The first, Table 1, summarizes all statistics for
the week.  It contains means and standard deviations over the week of
satellite ephemeris and clock correction transformation parameters for
each centre (table 1.1665.a). It also displays the computed satellite
position sigmas for the combined orbits (table 1.1665.b).
The second part, Table 2, contains the complete ephemeris and clock
correction transformation parameters (includes both the apriori and a
posteriori values) for each centre and each day (tables 2.1665.[0-6]).
The third part, Table 3, contains two types of daily RMS for each satellite
and centre, along with the computed satellite position sigmas for the
combined orbits (tables 3.1665.[0-6]). The first type of satellite RMS is
based on orbit combination and the second RMS type is a result of the 7-day
arc evaluation of each centre ephemerides. The fourth part, Table 4, is a
weekly summary of the daily precise navigation summaries for centres
providing both orbit and clock solutions.  It contains weekly station RMS
w.r.t. the initial coordinates for the Latitude, Longitude and Height 
components for up to three IGS stations (table 4.1307). The fifth and final
part, Table 5, is similar to Table 4 and contains daily precise navigation
statistics (tables 5.1665.0-6).

In tables 1-3, the most important statistic which is meaningful for intra
centre/satellite analysis is labeled WRMS. It is a weighted RMS where
normalized weights are based on accuracy codes given in the SP3 files, and
should not be affected by downweighted/problem satellites when acknowledged
by individual centres in their SP3 file.
                                                                               

             
Table 1: Week 1665 summary.                       (Dec 04, 2011 - Dec 10, 2011)

Table 1.1665.a   GPS week: 1665   MJD: 55899.000-55905.000

         Mean and standard deviations of transformation parameters to the 
         combined IGS orbit.
         WRMS - orbit RMS weighted by the SP3 header accuracy codes.
         STA  - Mean number of stations in the daily solutions.
   
CENT STA|   DX    DY    DZ    RX    RY    RZ   SCL  RMS  WRMS|    TOFT   TDRFT   SDEV    RMS
        |  [mm]  [mm]  [mm] [uas] [uas] [uas] [ppb] [mm] [mm]|    [ps]  [ps/d]   [ps]   [ps]
--------+----------------------------------------------------+------------------------------
cod  253|    0     0     5   101   -50    -7  -.26    8    8 |    -264     -40     19     92
        |    0     0     1    10    19    19   .02           |     507    1347
emr   95|    0     1     9   -27   -53   -22   .40   19   19 |    1165     271     15     96
        |    1     2     1    20    33    25   .03           |     486     810
esa  129|    0     0     0  -106   153    24   .20    7    7 |    -756     880     45    235
        |    0     0     0    16    21    14   .03           |    1667    2438
gfz  196|    0    -1    -5    66   -50    -9  -.22   12   11 |    -109     442     30    115
        |    0     1     1    49    85    19   .04           |     381     603
grg  124|    1     1    -8    38  -104    -6   .68   18   16 |      99     127     47    217
        |    1     0     2     9    14     8   .03           |     588     735
igr  n/a|    0     0     0   -12   -76   -32  -.08    5    5 |   -1805    -172     20     80
        |    0     0     0    15    17     8   .03           |    1244     950
jpl  134|    0    -1     4    16     6    31   .56   14   14 |    1216     212     19     84
        |    1     1     1    10    17    33   .02           |     596     830
mit  255|    0     0    -5    42  -124   -35  -.37   11    9 |     -78     215     23    179
        |    1     0     0    16    22    12   .01           |     398     326
ngs  219|    0     0    -2  -101   102   -13  -.21   11    9 |   27234  -40159   1648   3458
        |    1     0     1    25    59    10   .06           |   72976  106573
sio  247|   -1     0     8    33  -117    28  -.22   19   18 |     ---     ---    ---    ---
        |    1     1     0    21    29    16   .02           |     ---     ---


Table 1.1665.b   GPS week : 1665   MJD: 55899.000-55905.000   

         Satellite position sigmas for the combined orbits
         (coded in the IGS SP3 orbit files).
         "E" flags eclipsing satellites.
         Units: mm.

              Day of GPS week
 PRN  |    0    1    2    3    4    5    6 |  Remarks
------+------------------------------------+------------------------------------------
   1  |    5    5    4    4    5    5    5 |
   2  |    4    4    4    7    4    5    4 |
   3  |    4    4    3    3    4    4    5 |
   4  |    4    4    4    4    4    4    4 |
   5  |    4    4    4    5    4    4    4 |
   6  |    4    3    3    3    4    4    5 |
   7  |    5    4    4    4    4    4    4 |
   8  |    5    4    4    4    4    4    4 |
   9  |    3    3    3    4    4    4    4 |
  10  |    5    5    5    4    5    4    4 |
  11  |    6    6    6    6    6    5    6 |
  12  |    4    5    4    4    4    5    4 |
  13  |    4    4    4    4    4    4    4 |
  14  |    4    4    4    4    4    4    4 |
  15  |    4    4    4    4    5    4    5 |
  16  |    5    5    4    4    4    5    4 |
  17  |    4    4    4    4    5    4    5 |
  18  |    4    4    4    4    5    5    5 |
  19  |    4    5    5    5    5    4    5 |
  20  |    4    4    4    5    4    4    5 |
  21  |    4    4    4    4    4    4    4 |
  22  |    4    4    4    4    3    3    4 |
  23  |    5    5    5    5    5    5    5 |
  25  |    4    4    4    5    5    7    5 |
  26  |    4    4    4    4    5    4    4 |
  27  |   10   10    9    8   11   10    8 |
  28  |    4    4    4    4    4    4    4 |
  29  |    5    5    4    4    4    4    4 |
  30  |    8    9    0    0   13   10   11 |
  31  |    4    4    4    4    4    4    5 |
  32  |    4    5    5    5    5    5    4 |



Table 2: Daily transformation of each centre to the combined IGS orbit and
         clocks for each day of the week. The transformation displayed is the
         sum of a priori and estimated transformations.
         WRMS - RMS weighted by the centres SP3 header accuracy codes.
         STA  - Number of stations in the daily solutions.
   
Table 2.1665.0   GPS week: 1665   Day: 0   MJD: 55899.000                            

CENT STA|   DX    DY    DZ    RX    RY    RZ   SCL  RMS  WRMS|    TOFT   TDRFT   SDEV    RMS
        |  [mm]  [mm]  [mm] [uas] [uas] [uas] [ppb] [mm] [mm]|    [ps]  [ps/d]   [ps]   [ps]
--------+----------------------------------------------------+------------------------------
cod  253|    0     0     6    96   -60    12  -.24    8    9 |    -109     659     21     99
        |                     14    -4                       |
emr   95|    0     2     8   -48   -47   -23   .43   19   19 |    1103     826     12    100
        |                      0   -42                       |
esa  129|    0     0     0  -134   175    47   .24    8    7 |   -2376    2772     13    165
        |                      4   -12                       |
gfz  196|    0     0    -6   142   -56   -20  -.18   10   10 |     221     314     27    106
        |                      0   -20                       |
grg  124|    0     0    -4    36   -94     4   .69   17   15 |     400    -120     37    220
        |                     53   -13                       |
igr  n/a|    0    -1     0   -17   -72   -48  -.06    5    5 |    -712     650     18     79
        |                     -9    43                       |
jpl  134|    0     0     4     6   -18     7   .57   14   14 |    1234     897     17     87
        |                     36   -32                       |
mit  255|    1    -1    -6    56  -120   -39  -.37   10    9 |    -154     180     24    197
        |                    -21    42                       |
ngs  219|    1     0    -1  -144   117   -12  -.27   10    9 |    -121     656   1910   3555
        |                     32   -76                       |
sio  247|    0    -2     8    52  -110    30  -.23   21   17 |     ---     ---    ---    ---
        |                    -12    38                       |

Table 2.1665.1   GPS week: 1665   Day: 1   MJD: 55900.000                            

CENT STA|   DX    DY    DZ    RX    RY    RZ   SCL  RMS  WRMS|    TOFT   TDRFT   SDEV    RMS
        |  [mm]  [mm]  [mm] [uas] [uas] [uas] [ppb] [mm] [mm]|    [ps]  [ps/d]   [ps]   [ps]
--------+----------------------------------------------------+------------------------------
cod  253|    0     0     6   105   -39    -7  -.26    8    9 |     -45    -492     17    110
        |                      2   -32                       |
emr   95|    0     4     7   -53   -49    -1   .37   20   20 |    1693   -1063     14    102
        |                     45   -43                       |
esa  129|    0     0    -1  -111   177    14   .20    6    6 |     168     412     13    181
        |                     30   -13                       |
gfz  196|    0    -2    -4    95  -127    26  -.17   10   10 |     -18     220     29    111
        |                    -29   -23                       |
grg  124|    2     0    -6    39   -86    -4   .72   16   15 |     371    -216     45    191
        |                     42   -40                       |
igr  n/a|    0    -1     0     4   -48   -37  -.10    5    5 |    -193   -1511     23     75
        |                    -21    27                       |
jpl  134|   -3    -2     2    27     0    -6   .55   15   15 |    1880   -1049     21     95
        |                     38   -80                       |
mit  255|    0    -1    -6    25  -136   -22  -.38   10    9 |    -265     -20     24    191
        |                     -5    40                       |
ngs  219|    0     0     0   -96   121   -28  -.24   12   10 |  192725 -281826   1706   3292
        |                    -53     8                       |
sio  247|    0     0     9    32  -115    39  -.23   19   17 |     ---     ---    ---    ---
        |                    -12    60                       |

Table 2.1665.2   GPS week: 1665   Day: 2   MJD: 55901.000                            

CENT STA|   DX    DY    DZ    RX    RY    RZ   SCL  RMS  WRMS|    TOFT   TDRFT   SDEV    RMS
        |  [mm]  [mm]  [mm] [uas] [uas] [uas] [ppb] [mm] [mm]|    [ps]  [ps/d]   [ps]   [ps]
--------+----------------------------------------------------+------------------------------
cod  253|    0     0     7   123   -31     2  -.26   10   10 |   -1006    1027     18     88
        |                     11     9                       |
emr   95|   -1     4     9   -16   -10   -40   .41   20   20 |     548     224     17     97
        |                      0   -80                       |
esa  129|    1     0     0  -110   169    30   .21    6    6 |      -4     225     14    176
        |                     22    -9                       |
gfz  196|    0    -1    -4    22  -141    -9  -.21    9    9 |    -159     267     29    107
        |                    -24   -12                       |
grg  124|    0     1    -8    50  -128    -4   .71   15   13 |    -307     638     37    237
        |                     34   -12                       |
igr  n/a|    0     0     0     9   -70   -24  -.08    4    4 |   -1853    -190     20     83
        |                    -14    55                       |
jpl  134|    0    -2     5    30    11    -4   .55   14   14 |     714     142     18     83
        |                     39   -18                       |
mit  255|    0     0    -6    29  -122   -32  -.36   10    8 |    -439     337     20    174
        |                    -14    41                       |
ngs  219|    0     1    -2   -62   174   -14  -.23   10    8 |   -1079    1121   1456   3334
        |                    -57  -121                       |
sio  247|   -2     1     8     1  -115    48  -.24   17   15 |     ---     ---    ---    ---
        |                     -3    61                       |

Table 2.1665.3   GPS week: 1665   Day: 3   MJD: 55902.000                            

CENT STA|   DX    DY    DZ    RX    RY    RZ   SCL  RMS  WRMS|    TOFT   TDRFT   SDEV    RMS
        |  [mm]  [mm]  [mm] [uas] [uas] [uas] [ppb] [mm] [mm]|    [ps]  [ps/d]   [ps]   [ps]
--------+----------------------------------------------------+------------------------------
cod  253|    0     0     6    91   -46   -12  -.25    9    9 |     244   -2680     21     94
        |                     35   -33                       |
emr   95|    0     0     9   -15   -54   -33   .36   18   18 |    1275     -39     14     73
        |                     16   -51                       |
esa  129|    0     0    -1   -82   150    32   .20    6    6 |   -2088    2957     16    176
        |                     20     9                       |
gfz  196|    0    -2    -4     9   -59   -11  -.23   15   13 |     406    -508     30    161
        |                      2   -21                       |
grg  124|    3     1    -9    30  -107   -17   .68   17   16 |     664    -547     46    187
        |                     54   -19                       |
igr  n/a|    0     0     0   -10   -79   -34  -.10    5    5 |   -1351    -830     22     85
        |                     -8    45                       |
jpl  134|    1     0     3     5     2    32   .55   14   14 |    1906    -397     18     78
        |                     30   -16                       |
mit  255|    0     0    -6    66  -147   -35  -.38   10    9 |     283    -219     23    179
        |                    -37    27                       |
ngs  219|    1     0    -1   -90   122   -23  -.23   11    9 |     227   -2681   1312   3541
        |                      0    -4                       |
sio  247|   -2     1     8    56  -143    37  -.23   17   18 |     ---     ---    ---    ---
        |                    -29    42                       |

Table 2.1665.4   GPS week: 1665   Day: 4   MJD: 55903.000                            

CENT STA|   DX    DY    DZ    RX    RY    RZ   SCL  RMS  WRMS|    TOFT   TDRFT   SDEV    RMS
        |  [mm]  [mm]  [mm] [uas] [uas] [uas] [ppb] [mm] [mm]|    [ps]  [ps/d]   [ps]   [ps]
--------+----------------------------------------------------+------------------------------
cod  253|    0     0     5    97   -84   -21  -.25    8    8 |    -196    -457     17     61
        |                     23     9                       |
emr   95|    0    -1     8   -39  -100   -56   .37   19   19 |    1871    -241     15     91
        |                     17   -35                       |
esa  129|    1     0     0   -97   144     9   .21    7    7 |     739   -1538    233    580
        |                     32    19                       |
gfz  196|    0    -1    -6    20    99    -7  -.24   12   12 |    -200    1381     32     99
        |                     11   -18                       |
grg  124|    3     1   -10    28  -109   -16   .64   19   17 |     617    -601     51    221
        |                     30    11                       |
igr  n/a|    0     0     0   -32  -107   -22  -.05    5    5 |   -1667    -882     22     88
        |                     19    37                       |
jpl  134|    1     0     5    13     0    73   .54   14   14 |    1594    -207     22     73
        |                     35   -23                       |
mit  255|   -1     0    -5    48   -82   -17  -.36   11   10 |    -556     818     22    156
        |                    -20    -1                       |
ngs  219|    0     1    -3   -99    -2   -13  -.16   11    9 |    -203    -487   1584   3485
        |                    -54    76                       |
sio  247|   -4     2     9    44   -70    32  -.21   19   21 |     ---     ---    ---    ---
        |                    -18    23                       |

Table 2.1665.5   GPS week: 1665   Day: 5   MJD: 55904.000                            

CENT STA|   DX    DY    DZ    RX    RY    RZ   SCL  RMS  WRMS|    TOFT   TDRFT   SDEV    RMS
        |  [mm]  [mm]  [mm] [uas] [uas] [uas] [ppb] [mm] [mm]|    [ps]  [ps/d]   [ps]   [ps]
--------+----------------------------------------------------+------------------------------
cod  253|    0     0     3    98   -59    12  -.30    8    8 |     197     381     20     89
        |                      7   -21                       |
emr   95|    0    -2    11     1   -90   -19   .41   20   20 |     721     843     18    102
        |                    -46   -13                       |
esa  129|    0     0     1  -110   123     9   .15    7    6 |   -2941    3923     18    191
        |                     15    16                       |
gfz  196|   -1    -2    -5    87    22   -36  -.27   12   12 |    -219     427     34    115
        |                     -2   -38                       |
grg  124|    1     1   -11    52  -113    -5   .66   23   17 |     -88     273     59    249
        |                     26    -3                       |
igr  n/a|    0     0     0   -24   -81   -29  -.04    5    5 |   -3430     460     20     87
        |                    -14     5                       |
jpl  134|   -1     0     6    24    10    67   .60   15   14 |     436     800     19     88
        |                      1   -63                       |
mit  255|    0     0    -5    47  -113   -56  -.36   12   10 |     565     291     26    200
        |                    -21     5                       |
ngs  219|    1     1    -3  -120    49    -9  -.10   10    9 |      43     810   1628   2861
        |                     26    12                       |
sio  247|   -1     2     8    39  -105     7  -.22   20   19 |     ---     ---    ---    ---
        |                    -15    35                       |

Table 2.1665.6   GPS week: 1665   Day: 6   MJD: 55905.000                            

CENT STA|   DX    DY    DZ    RX    RY    RZ   SCL  RMS  WRMS|    TOFT   TDRFT   SDEV    RMS
        |  [mm]  [mm]  [mm] [uas] [uas] [uas] [ppb] [mm] [mm]|    [ps]  [ps/d]   [ps]   [ps]
--------+----------------------------------------------------+------------------------------
cod  253|    0     1     3    96   -28   -40  -.26    8    8 |    -934    1279     21    103
        |                     30   -15                       |
emr   95|   -2    -1    10   -21   -20    20   .42   19   19 |     944    1350     17    110
        |                     -9   -57                       |
esa  129|    0     0    -1   -96   131    26   .21    7    7 |    1206   -2589     14    179
        |                     14    22                       |
gfz  196|    0    -1    -6    88   -89    -8  -.25   13   13 |    -794     996     34    110
        |                    -30   -27                       |
grg  124|    1     1   -10    30   -90     1   .68   18   17 |    -962    1468     56    216
        |                     39   -24                       |
igr  n/a|    1     0     0   -17   -72   -32  -.11    4    4 |   -3429    1099     21     69
        |                      9    44                       |
jpl  134|   -2    -2     5    10    38    47   .53   13   14 |     750    1298     20     90
        |                     45   -60                       |
mit  255|    1    -1    -4    25  -145   -40  -.37   11   10 |      18     119     22    158
        |                     -8     6                       |
ngs  219|    2     1    -2   -95   134     5  -.23   10    8 |    -953    1293   1940   4138
        |                    -18   -46                       |
sio  247|   -1     1     8     6  -163     4  -.20   21   17 |     ---     ---    ---    ---
        |                     -4    62                       |

       
       
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 (earth).
         "M"    stands for eclipsing satellites (moon).
         "X"    stands for excluded from the statistics 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" stands for median of the centre's satellite RMS.
         "MD"
         Units: mm.

Table 3.1665.0   GPS week: 1665   Day: 0   MJD: 55899.000                            

        Weighted Average                                            Orbit Dynamics (7 days)
 PRN  |  cod  emr  esa  gfz  grg  igr  jpl  mit  ngs  sio  IGS |   cod  emr  esa  gfz  grg  igr  jpl  mit  ngs  sio   IGS
------+--------------------------------------------------------+---------------------------------------------------------
   1  |   12   14    5   12   16    4   19   11   10   26    4 |    49   61   60   61   71   57   71   64   55   47    58
   2  |    9   15    5   14   11    3   12   10    8   17    3 |    22   30   31   35   28   26   30   23   27   26    26
   3  |    6   18    6   10   14    5   10    9   12   18    3 |    19   22   21   22   26   19   23   22   25   25    19
   4  |    8   11    7   11   11    6    9   12    8   29    4 |    31   39   40   42   46   38   40   32   36   28    36
   5  |    7   18    7   10   20    4   16   14   12   14    4 |    12   22   16   14   31   10   21   13   13   10    11
   6  |    5   19    6    8   12    4   10    8   12   20    3 |    21   24   25   26   31   23   25   31   27   30    23
   7  |    6   19    9   13   21    4   16    7   12   19    4 |    19   27   22   21   27   21   23   19   24   20    18
   8  |    9   16    9   10   19    4   12   13   13   19    4 |    15   18   17   20   23   17   18   20   20   17    14
   9  |    7   17    5    6   11    5   11   11   11   10    3 |    19   25   23   18   23   19   21   20   22   19    18
  10  |   14   22   10   11   11    9   16   13   13   25    5 |    15   26   16   18   17   14   23   16   20   15    13
  11  |    8   17    9   20   17    4   11   14   12   56    6 |    40   49   46   58   58   45   50   49   43   63    45
  12E |    7   15    6    7   18    5   24   11    6   14    4 |    22   29   24   25   23   22   30   25   21   30    22
  13  |    8   16    9    6   25    5   13    9    9   15    4 |    22   32   23   23   38   23   31   24   25   23    23
  14  |    8   20    5    8   18    5   11    4   10    9    3 |    25   34   27   26   38   25   32   25   25   23    25
  15  |    5   23    9    8   20    4   20    7    8    9    4 |    23   34   29   22   36   23   34   24   29   22    25
  16E |    6   30   12   13   19    5   18   10   12   22    5 |    21   34   29   23   30   23   30   18   27   24    23
  17  |   10   14    6   11   10    5   17   11    7   20    4 |    23   30   27   28   30   25   30   27   26   26    25
  18  |    6   21    5   10   15    4   13   11   10   11    3 |    13   25   13   15   18   12   17   13   15   13    11
  19  |    8   22    6    9   11    5   17   13   11   20    4 |    20   33   21   24   27   22   28   24   24   23    21
  20  |    9   15    9   15   19    3    9    8    7   19    4 |    15   24   18   21   23   14   21   17   16   22    14
  21  |    5   15    5    8   12    4   11    8    8   24    3 |    19   26   23   22   26   21   24   21   22   17    20
  22  |    8   16    5    6   22    3    9    8    9    9    3 |    10   21   15   14   27   11   17   13   16   10    11
  23  |   10   22    8    9   22    5   15   12    9   20    4 |    26   37   25   21   36   24   33   26   27   28    25
  25E |    9   25    6    9   17    5   19    9   13    9    4 |    29   37   31   29   36   29   35   29   30   23    28
  26  |   13   15   11   10   15    4   10    9   11   21    4 |    14   18   17   19   21   13   21   18   20   26    14
 X27  |   22   28   17   19  ---   16   30   16  ---  ---    9 |    13   27   22   20  ---   15   29   23  ---  ---    15
  28E |   10   14    7    9   15    4   10    7    9   17    3 |    22   31   23   24   30   21   29   21   22   28    22
  29  |    5   21    8    9   14    5   17   17    8   22    4 |    24   31   26   27   27   27   29   29   26   23    25
 X30E |   13  ---   10  ---   18    8  ---   12  ---  ---    7 |     7  ---   16  ---   15   11  ---    9  ---  ---    11
  31  |    8   20    9   10   19    4   12    9   12   11    4 |    18   29   24   22   35   20   26   16   22   18    19
  32  |   13   20    7    8   17    6   17    8    7   17    4 |    12   26   17   18   20   12   28   15   15   16    14
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |    8   19    8   10   17    5   14   10   10   21      |T   20   30   24   25   30   22   28   23   24   23    21
 WRMS |    9   19    7   10   15    5   14    9    9   17      |NE  20   29   24   25   31   22   28   24   24   23    21
 MEDI |    8   18    7   10   17    5   13   10   10   19      |MD  20   29   23   22   27   21   28   22   24   23    21

Table 3.1665.1   GPS week: 1665   Day: 1   MJD: 55900.000                            

        Weighted Average                                            Orbit Dynamics (7 days)
 PRN  |  cod  emr  esa  gfz  grg  igr  jpl  mit  ngs  sio  IGS |   cod  emr  esa  gfz  grg  igr  jpl  mit  ngs  sio   IGS
------+--------------------------------------------------------+---------------------------------------------------------
   1  |   11   16    7    8   12    6   20   11   13   22    4 |    30   44   37   32   47   32   52   40   30   26    35
   2  |    7   11    5   16   13    6   13   12    9   20    4 |    16   23   21   28   22   18   25   17   21   16    18
   3  |   10   19    4    9   11    6   11    8   10   14    3 |    16   18   18   16   23   16   23   17   23   17    16
   4  |    7   11    5    8   15    6   10   11    9   25    3 |    19   27   26   26   26   21   27   22   25   24    21
   5  |    7   20    7   13   19    3   16   14    8   13    4 |    10   27   15   16   31    8   22    9   14   10    10
   6  |    4   15    3    8   12    5    9    5   11   16    3 |    18   18   20   20   24   18   22   22   24   22    19
   7  |    7   18    9   14   17    4   17    7    9   18    4 |    16   24   18   20   24   14   22   15   16   13    13
   8  |   11   17    6   11   17    5   11    8   12   15    4 |    14   19   12   18   17   11   17   16   13   11    10
   9  |    7   17    5    7    9    5   12   10   12   12    3 |    18   19   17   19   18   13   20   15   20   15    14
  10  |   13   20    8   11   15    6   13   16   12   20    4 |    17   22   15   16   18   12   22   15   18   14    12
  11  |    9   17    9    9   12    5   13   11   11   55    5 |    23   34   26   25   37   25   34   30   25   55    26
  12E |    9   20    7   10   24    4   22   10   11   11    4 |    22   25   25   25   26   23   29   23   27   26    22
  13  |    7   17    6    8   22    4   13    9   10   13    3 |    17   27   17   21   35   16   27   17   19   18    16
  14  |    5   22    7    8   15    4   14    6    8    9    3 |    17   30   25   18   32   20   27   18   23   16    20
  15  |    4   24    7   10   18    5   20    7   11    9    4 |    17   29   22   17   30   15   30   16   21   15    17
  16E |    7   29    7   13   19    5   17   10   11   26    4 |    18   34   22   23   29   20   25   19   22   25    21
  17  |    8   20    6   11   15    4   17    9    8   20    4 |    14   23   16   20   18   14   23   18   20   19    15
  18  |    6   22    4    7   16    3   11    8   11   12    3 |    14   25   13   13   19   12   17   15   15   16    12
  19  |    8   27    5    9   13    5   18   12    8   21    4 |    16   28   17   16   23   15   25   19   20   17    15
  20  |    9   18    7   12   20    4   11    8   15   18    4 |    18   27   18   19   26   17   24   18   21   21    16
  21  |   11   18    5   10   10    3   11    7   13   25    4 |    11   22   14   15   17   12   18   14   17    9    13
  22  |    8   18    6    7   20    4   11    9   12    9    3 |    12   20   12   15   25   10   18   15   15   10    11
  23  |    8   22    7   12   18    5   17   12   17   17    4 |    21   31   22   19   29   19   32   19   25   21    19
  25E |    7   24    4    9   13    4   18   10   13    8    4 |    17   27   20   17   30   19   27   20   21   15    18
  26  |   12   15    5   13   14    3   12    7   13   18    4 |    19   19   13   22   19   11   20   16   16   20    13
 X27  |   17   28   26   25  ---   14   17   22  ---  ---   10 |    16   29   30   26  ---   16   22   20  ---  ---    15
  28E |    9   16    6   12   18    4   15   11   15   17    4 |    19   26   18   17   27   18   23   16   27   22    18
  29  |    7   21    7   11   13    6   17   21   16   20    5 |    16   24   17   22   19   18   23   20   23   15    16
 X30E |   14  ---    8  ---   29   16  ---   15  ---  ---    8 |    13  ---   14  ---   20   11  ---    8  ---  ---    13
  31  |    8   18    5   10   18    6   12    8   13    9    3 |    12   24   17   18   31   15   26   14   20   16    15
  32  |   13   24    7   10   16    4   20    7   15   15    4 |    11   25   17   14   22   14   29   14   19   14    14
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |    8   20    6   10   16    5   15   10   12   19      |T   16   25   19   19   25   16   25   17   20   18    16
 WRMS |    9   20    6   10   15    5   15    9   10   17      |NE  16   25   19   19   25   15   24   18   20   18    16
 MEDI |    8   18    6   10   15    5   13   10   11   17      |MD  17   25   18   19   24   16   23   17   21   16    16

Table 3.1665.2   GPS week: 1665   Day: 2   MJD: 55901.000                            

        Weighted Average                                            Orbit Dynamics (7 days)
 PRN  |  cod  emr  esa  gfz  grg  igr  jpl  mit  ngs  sio  IGS |   cod  emr  esa  gfz  grg  igr  jpl  mit  ngs  sio   IGS
------+--------------------------------------------------------+---------------------------------------------------------
   1  |   15   13    4    8   13    4   19   10   11   12    4 |    39   49   49   45   59   45   57   49   43   35    46
   2  |    7   15    5   11   14    4   12    8    8   17    3 |    18   28   25   28   25   21   25   18   24   16    21
   3  |    9   17    6    8   10    7   10    7    9   12    3 |    20   24   25   22   28   23   28   22   27   23    23
   4  |    5   13    3    9   12    5   10   10   10   21    3 |    24   31   31   30   37   28   31   26   31   22    28
   5  |    6   20    6   11   18    3   15   11    9   14    4 |    11   25   15   18   31    9   22   12    9   13    11
   6  |    6   16    5    7    9    6    9    7   10   14    3 |    22   22   22   21   27   22   24   24   23   23    22
   7  |    7   17    6   10   18    4   16    6   10   16    3 |    18   24   21   25   28   18   24   17   19   13    17
   8  |   10   16    6    7   16    5   14    7    7   13    3 |    15   17   18   21   22   15   20   17   17   16    14
   9  |    6   17    6    9   15    3   12    8    9   10    3 |    18   21   18   21   20   15   20   19   19   18    16
  10  |   14   17   12   11   14    4   15   14    8   19    4 |    14   23   17   19   18   13   24   16   17   14    14
  11  |   11   15    7    9    9    5   12   12   13   52    5 |    28   39   34   36   46   33   40   38   32   59    34
  12E |   11   18    8   12   11    4   18   10   13   12    4 |    19   22   23   25   22   20   26   21   28   25    20
  13  |    6   17    5    9   25    4   14    8   11   10    4 |    21   29   22   22   40   22   30   23   24   21    21
  14  |   10   20    7   11   18    5   12    7   10    9    3 |    27   28   26   25   34   25   27   22   29   22    24
  15  |    5   23    6    6   19    4   17    5   11    9    3 |    21   37   23   23   38   19   30   24   24   23    23
  16E |    5   24    7    9   12    4   16    8    9   13    3 |    17   29   22   16   25   17   26   15   21   18    18
  17  |    9   23    6   11   14    4   17    9    7   18    4 |    18   29   21   22   26   18   26   21   19   21    19
  18  |   10   24    7    9   17    4   12    8    8   10    3 |    14   26   16   13   21   13   16   16   18   15    13
  19  |   10   26   10    6    8    6   18   18   10   21    4 |    18   29   19   16   23   17   29   22   18   18    17
  20  |   10   20    6   13   19    4   11   11    7   17    4 |    17   28   20   25   28   17   22   14   17   17    16
  21  |    9   16    4   11    9    3   12    5    9   24    3 |    15   22   18   20   21   16   20   16   18   14    16
  22  |   12   18    6    7   21    6   11    5   15    8    4 |    18   23   15   17   25   14   18   14   17   13    13
  23  |   10   24    9   11   20    5   17   12    8   15    4 |    23   32   26   22   34   23   32   20   24   22    22
  25E |    9   27    6   11   14    5   17   10   12    8    4 |    20   30   22   24   29   21   24   22   25   21    20
  26  |   12   18    5    8   13    4   12    6   13   14    3 |    19   27   17   25   23   15   25   18   20   24    18
 X27  |   16   28   16   20  ---   20  ---   13  ---  ---    8 |    23   30   23   30  ---   23  ---   18  ---  ---    19
  28E |    8   19    6    7   17    3   13    9    8   17    3 |    17   23   18   18   24   17   24   16   16   21    16
  29  |    9   22    5    9   11    5   16   13    9   17    4 |    20   26   20   25   23   20   25   22   23   20    20
 X30E |    9  ---  ---  ---  ---  303  ---  ---  ---  ---    0 |    83  ---  ---  ---  ---  759  ---  ---  ---  ---    80
  31  |    9   22    7    9   20    4   13   10   11    9    4 |    17   27   20   18   33   17   26   15   21   17    17
  32  |   15   25    5    9   13    4   20   10   12   17    4 |    16   25   18   19   23   15   28   13   18   14    15
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |   10   20    6    9   15    4   14   10   10   17      |T   21   27   22   23   28   43   26   20   22   20    21
 WRMS |   10   20    6    9   13    4   14    8    8   15      |NE  19   27   22   23   29   19   26   20   22   20    19
 MEDI |    9   18    6    9   14    4   14    9   10   14      |MD  18   27   21   22   26   18   25   18   21   20    19

Table 3.1665.3   GPS week: 1665   Day: 3   MJD: 55902.000                            

        Weighted Average                                            Orbit Dynamics (7 days)
 PRN  |  cod  emr  esa  gfz  grg  igr  jpl  mit  ngs  sio  IGS |   cod  emr  esa  gfz  grg  igr  jpl  mit  ngs  sio   IGS
------+--------------------------------------------------------+---------------------------------------------------------
   1  |   11   13    6   11   15    4   20   12    7   15    4 |    45   53   52   53   60   50   60   55   46   41    50
   2  |    9   13    6   50   15    4   13   13    9   19    6 |    21   28   26   54   27   23   26   22   23   22    24
   3  |   11   13    3    8   13    7   10    8   11   12    3 |    19   19   21   17   23   17   22   19   23   19    18
   4  |    6   10    7   12   17    5    8   10   10   18    3 |    28   31   33   33   41   32   31   29   33   22    30
   5  |    7   25    5   16   19    3   13   11   12   14    4 |    14   32   13   16   30   10   21   13   14   13    11
   6  |    4   15    4   10   12    4    9    6   11   10    3 |    21   22   24   24   29   23   24   26   26   25    23
   7  |    7   17    8   11   20    3   16    7   12   15    4 |    18   27   22   22   28   17   25   16   22   14    17
   8  |   10   15    5    9   20    4   12    7   11   15    3 |    17   18   16   21   25   16   21   19   22   16    15
   9  |    8   15    6    9   12    3   13    7   12   11    3 |    21   23   22   18   24   18   21   21   19   21    18
  10  |   13   17    7   13   16    4   13   12   10   14    4 |    15   22   16   19   18   14   20   16   18   12    14
  11  |   10   14    9   11   14    5   12   13   12   51    6 |    38   44   43   45   50   42   45   45   37   60    41
  12E |    9   14    6   15   15    3   16    8   12   11    4 |    26   30   25   28   30   23   28   25   22   28    23
  13  |    6   15    5    9   24    4   13   10    6   10    3 |    23   32   25   21   39   23   29   25   25   25    23
  14  |    6   18    4   11   19    5   12    7   10    9    3 |    23   29   26   23   36   23   28   21   23   22    23
  15  |    7   17    6    9   22    5   22    8   11   11    4 |    19   27   24   17   38   19   32   21   25   20    21
  16E |    8   18   10   12   17    6   15   10   11   15    4 |    23   29   25   23   29   21   28   19   22   22    22
  17  |    6   18    5   15   14    4   18   11    9   18    4 |    22   27   20   22   26   19   26   24   21   24    19
  18  |    8   23    6   10   18    3   11   14   10   12    4 |    13   25   12   12   18    8   15   18   12   16    10
  19  |    8   23    8   10    8    4   20   16    9   21    4 |    20   28   19   19   24   17   26   24   22   24    18
  20  |   10   17    7   15   18    3   12   11   14   18    4 |    16   23   19   22   25   13   21   16   22   21    15
  21  |    8   16    6   14   13    3   12    7   12   26    4 |    18   23   18   20   23   18   23   18   20   17    17
  22  |    7   16    5   10   21    2   11    7    8   10    3 |    14   20   16   15   25   13   18   13   13   14    13
  23  |    8   23    8   15   22    5   17   11    8   14    4 |    25   39   25   21   36   24   33   24   27   26    24
  25E |   10   29    6   11   16   10   16   10   13   14    4 |    26   36   27   25   33   25   30   27   21   20    24
  26  |   13   19    5   12   18    4    9    8   11   12    4 |    16   22   15   18   24   12   19   17   15   18    13
 X27  |   10   17   20   27  ---   13   17   13  ---  ---    8 |    17   25   27   21  ---   17   24   21  ---  ---    14
  28E |    8   21    6    9   17    3   11   14    8   16    4 |    18   28   19   16   24   17   24   21   17   21    17
  29  |    8   21    7   12   12    5   16   14   10   18    4 |    24   30   24   28   26   24   28   23   26   21    22
 X30E |    8  ---  ---  ---  ---  108  ---  ---  ---  ---    0 |    40  ---  ---  ---  ---   87  ---  ---  ---  ---    37
  31  |    7   22    7    9   20    5   14   12   12   10    4 |    14   26   19   18   31   13   26   14   19   16    16
  32  |   16   23    7   12   19    4   20    9   12   17    5 |    17   24   22   20   24   15   27   16   18   16    16
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |    9   18    6   15   17    5   14   10   11   17      |T   21   28   23   23   29   22   26   22   22   21    20
 WRMS |    9   18    6   13   16    5   14    9    9   18      |NE  20   27   23   23   30   20   26   22   22   21    20
 MEDI |    8   17    6   11   17    4   13   10   11   14      |MD  20   27   22   21   27   18   26   21   22   21    18

Table 3.1665.4   GPS week: 1665   Day: 4   MJD: 55903.000                            

        Weighted Average                                            Orbit Dynamics (7 days)
 PRN  |  cod  emr  esa  gfz  grg  igr  jpl  mit  ngs  sio  IGS |   cod  emr  esa  gfz  grg  igr  jpl  mit  ngs  sio   IGS
------+--------------------------------------------------------+---------------------------------------------------------
   1  |   12   16    5   12   15    4   20    9   14   21    4 |    43   56   48   51   60   50   60   53   49   43    48
   2  |    6   14    5   14   17    4   10   10   11   19    3 |    30   36   32   34   33   31   32   31   30   27    29
   3  |    9   13    6   13   14    8    8   18   12   19    4 |    39   45   39   35   41   38   41   37   42   35    37
   4  |    6   12    7   12   17    3    9   12    7   18    3 |    31   35   35   31   40   33   32   30   32   25    30
   5  |    8   17    5   18   17    6   13    8   11   12    4 |    19   32   23   24   36   22   27   20   21   21    20
   6  |    6   13    5   15   13    7    8   16   10   18    4 |    32   38   33   31   36   32   34   33   31   30    30
   7  |    6   20    6   13   25    3   14    5    9   14    4 |    23   36   26   22   32   24   29   25   25   20    22
   8  |    8   17    5    9   26    5   13    7   10   11    4 |    23   29   22   19   30   21   27   24   24   21    20
   9  |    6   15    6   11   17    3   12    7   14   12    3 |    21   28   19   18   28   20   24   23   25   23    19
  10  |   10   20   10   14   18    3   13   13    9   13    4 |    23   31   23   22   24   21   27   22   20   22    20
  11  |    9   16    8   12   13    5    9   12   17   51    6 |    37   47   37   43   47   39   43   43   42   63    38
  12E |    8   14    7   11   15    3   17   10   11   12    4 |    29   34   27   27   36   29   31   29   30   29    27
  13  |    6   21    7   13   28    3   14    7    9   10    4 |    27   39   28   22   44   28   34   26   32   26    27
  14  |    6   19    9   11   20    7   13    9   14   10    4 |    26   33   29   27   40   24   28   23   29   22    25
  15  |    7   21    9   10   24    3   20   12    9   13    4 |    26   36   28   27   42   26   34   25   29   24    25
  16E |    5   20    7   15   20    4   14   11   10   16    4 |    24   31   29   19   29   24   28   20   22   23    22
  17  |    7   22    8   11   15    4   19    9   10   21    4 |    24   34   27   24   26   23   30   24   22   24    21
  18  |    8   22    5   12   19    4   13   17   11   14    4 |    23   30   22   20   25   20   22   27   22   28    20
  19  |    8   20    9   11   10    4   18   14   11   21    4 |    24   35   25   20   28   24   33   26   25   24    22
  20  |   10   16    7   14   19    4   11    9   10   20    4 |    23   31   21   19   27   22   25   22   21   28    19
  21  |    7   16    4   13   12    4   12    9   13   30    4 |    24   30   24   23   31   23   26   24   25   20    21
  22  |    7   16    4    6   18    5   13    7    8   10    3 |    22   28   22   18   28   19   21   21   21   23    19
  23  |    8   26   11   14   26    3   17   12   11   14    5 |    27   41   28   21   39   27   34   26   30   25    25
  25E |    7   25    7   14   18    7   15   11   11   17    4 |    29   39   31   26   41   26   39   32   31   20    29
  26  |   12   18    9   12   24    4   10    8   15   12    4 |    26   32   24   24   32   24   27   24   29   29    22
 X27  |   13   20   25   28  ---   21  ---   16  ---  ---   10 |    24   31   28   27  ---   22  ---   26  ---  ---    20
  28E |    7   17    7   12   18    4   10   16   13   17    4 |    25   36   26   19   33   26   30   22   32   27    23
  29  |    8   20    7   11   13    5   17    9   10   19    4 |    25   34   24   28   30   24   28   26   29   25    24
 X30E |   16  ---   15  ---  ---   26  ---   23  ---  ---   13 |    21  ---   21  ---  ---   47  ---   11  ---  ---    16
  31  |    7   22    9    9   20    7   15   13    8   14    4 |    21   32   25   20   37   23   31   22   21   23    21
  32  |   11   25    9    9   17    4   18    7   15   15    4 |    25   32   21   21   24   23   31   23   23   25    20
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |    8   19    7   12   19    5   14   11   11   19      |T   26   35   27   25   34   26   31   26   28   26    24
 WRMS |    8   19    7   12   17    5   14   10    9   21      |NE  26   35   27   25   34   26   31   27   27   27    24
 MEDI |    8   18    7   12   18    4   13   10   11   15      |MD  25   34   26   23   33   24   30   25   29   25    22

Table 3.1665.5   GPS week: 1665   Day: 5   MJD: 55904.000                            

        Weighted Average                                            Orbit Dynamics (7 days)
 PRN  |  cod  emr  esa  gfz  grg  igr  jpl  mit  ngs  sio  IGS |   cod  emr  esa  gfz  grg  igr  jpl  mit  ngs  sio   IGS
------+--------------------------------------------------------+---------------------------------------------------------
   1  |   15   15    6   13   12    4   19   10   10   26    4 |    33   44   38   42   49   38   52   39   36   28    37
   2  |    7   15    4   30   15    5   13   11    7   19    4 |    19   25   25   41   22   23   23   22   25   20    23
   3  |    8   16    8   10   19    7   10   14   10   22    4 |    26   31   25   30   31   24   32   28   25   32    26
   4  |    5   13    5   11   14    7   10   12    8   19    3 |    25   25   27   30   33   28   28   23   29   22    26
   5  |    6   22    5   11   21    4   11    8   10   13    3 |    14   30   19   19   31   16   24   15   17   17    15
   6  |    7   16    6   11   16    6    8   13    9   17    3 |    19   22   17   21   25   16   23   23   17   21    18
   7  |    6   22    8   11   20    4   13    7    8   16    3 |    20   31   23   23   29   22   24   22   23   14    18
   8  |   11   15    7   11   19    4   15    7   10   12    4 |    18   24   21   23   23   19   21   20   18   19    17
   9  |    7   17    4    9   15    5   14    8   10   13    3 |    18   24   20   16   22   17   25   19   19   21    17
  10  |    8   17    7   13   17    7   13   12    8   18    4 |    20   23   23   28   23   21   26   21   23   25    20
  11  |    8   15    7   13   11    5    9   13   11   52    5 |    24   35   24   33   39   26   34   29   26   57    26
  12E |    8   32    5   13   17    4   18   10    8   18    4 |    24   35   23   20   30   25   28   27   26   34    23
  13  |    6   22    5   12   25    5   11    7   11    8    3 |    22   32   24   23   41   24   30   21   25   21    22
  14  |    7   17    6    9   18    6   12    8   10   11    3 |    21   25   19   18   34   21   26   19   25   19    19
  15  |    7   17    8    7   23    5   18   14   12   16    4 |    21   27   27   23   36   21   30   19   24   19    21
  16E |    6   21    8    9   19    6   13   19   10   17    4 |    21   30   24   20   29   21   26   22   18   20    20
  17  |    8   23    7   13   16    4   18    8    8   21    4 |    23   31   24   23   21   20   28   21   20   26    20
  18  |    7   26    5   11   20    5   13   20   10   16    4 |    14   28   18   14   21   12   22   24   13   23    15
  19  |    7   20    8   10   11    7   16   11   12   22    4 |    18   29   18   17   22   16   27   18   15   14    15
  20  |    8   18    7   14   20    6   14   10    9   19    4 |    18   24   18   21   27   15   22   15   20   20    15
  21  |    5   16    6   11   12    4   11    9   10   33    4 |    16   22   17   13   20   14   22   15   17   18    14
  22  |    6   18    5    8   19    5   10    7    8   10    3 |    14   19   13   13   22   11   16   14   12   17    12
  23  |    8   31    7   11   22    6   15   13   11   13    4 |    23   37   24   19   33   22   29   20   21   20    21
  25E |    8   27   11   15   83    7   35   20   19   24    7 |    93   92   94   93  133   93   87   96   94   23    92
  26  |   10   17    6   12   15    6   13   11    9   12    3 |    21   26   19   25   22   20   23   18   19   24    17
 X27  |   17   26   23   22  ---   16   26   16  ---  ---    9 |    14   24   30   16  ---   17   24   17  ---  ---    14
  28E |    6   18    7   10   18    4   11   15   10   16    3 |    22   34   24   24   29   23   26   25   22   28    22
  29  |    7   26    5    9   12    6   16    9   10   21    4 |    22   29   19   22   24   21   25   22   22   22    19
 X30E |   15  ---   12  ---   26   12  ---   21  ---  ---    9 |    17  ---   16  ---   18   29  ---   15  ---  ---    14
  31  |   10   25    9    8   22    7   13   12    7   13    4 |    14   26   22   19   32   15   26   20   19   18    17
 X32  |   12   27    7    9  ---    7   17    7    8   16    4 |    16   28   18   18  ---   14   26   16   14   21    15
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |    8   20    7   12   23    5   15   12   10   20      |T   22   30   24   24   31   22   28   23   23   22    21
 WRMS |    8   20    6   12   17    5   14   10    9   19      |NE  19   27   22   22   28   19   26   20   20   22    19
 MEDI |    7   18    7   11   18    6   13   11   10   17      |MD  20   28   23   21   29   21   26   21   21   21    19

Table 3.1665.6   GPS week: 1665   Day: 6   MJD: 55905.000                            

        Weighted Average                                            Orbit Dynamics (7 days)
 PRN  |  cod  emr  esa  gfz  grg  igr  jpl  mit  ngs  sio  IGS |   cod  emr  esa  gfz  grg  igr  jpl  mit  ngs  sio   IGS
------+--------------------------------------------------------+---------------------------------------------------------
   1  |   13   13    7   17   13    4   20   10    8   33    5 |    54   62   64   69   72   60   71   66   60   52    61
   2  |    5   14    6   13   15    3   12    9   11   18    3 |    27   34   32   33   31   28   32   31   29   31    29
   3  |   10   15    8   20   15    4    8   17   13   29    5 |    27   35   29   38   35   29   29   33   29   30    28
   4  |    5   14    6   12   19    5    9   16   10   19    4 |    32   34   35   38   45   33   34   36   35   26    33
   5  |    5   21    6   12   22    3   11    7   11   14    4 |    19   32   23   22   31   20   26   22   21   24    19
   6  |    6   13    8   22   14    4    8   13   14   19    4 |    23   26   29   38   35   27   27   35   25   29    27
   7  |    7   18    9   11   22    5   13    8    8   16    4 |    16   26   20   19   24   18   24   22   20   13    17
   8  |   11   14    5   12   22    6   13    7   11   17    4 |    15   23   18   20   21   17   21   22   24   17    17
   9  |    7   15    8    9   19    5   13    7    8   11    3 |    15   22   17   21   24   15   20   20   20   17    16
  10  |    9   14    8   12   16    5   14   11    9   12    4 |    21   22   20   24   22   16   21   21   18   23    17
  11  |    8   15   10   25   12    6   11   12   12   53    6 |    45   53   51   66   61   48   52   55   50   67    51
  12E |    6   22    6   16   12    4   13   11   10   17    4 |    18   28   18   20   25   18   24   21   23   26    18
  13  |    7   18    7   12   23    4   10    6   12    8    3 |    22   30   23   24   37   22   27   23   27   21    22
  14  |    5   21    6   10   18    5   11    8    7    9    3 |    30   34   31   28   37   29   31   28   33   26    30
  15  |    6   18    6    9   23    5   21   11   10   12    4 |    22   33   25   25   38   21   31   23   27   22    23
  16E |    6   24   10   12   13    4   12   10   15   11    4 |    23   35   27   25   29   25   27   26   30   27    26
  17  |    9   20    5   13   18    5   16   10   10   22    4 |    24   30   24   27   29   23   27   29   24   30    23
  18  |    8   22    8   13   19    5   13   21   11   16    5 |    20   30   21   21   23   18   21   32   17   30    21
  19  |    7   24    5   13   14    5   18   14    9   22    4 |    20   31   22   23   27   21   28   28   26   23    22
  20  |    8   25    5   18   20    3   13   10    8   19    4 |    18   34   18   23   26   15   22   16   15   22    16
  21  |    5   13    5   10   13    4   10   12   12   32    4 |    21   25   26   28   26   23   22   27   26   24    22
  22  |    7   18    6   12   20    3    9    9    6   13    3 |    23   29   22   21   28   19   21   24   23   25    21
  23  |    8   24    8   10   20    6   15   14   12   12    4 |    25   35   23   22   33   23   31   24   26   21    23
 X25E |   10   23    9   13   18    7   17   12   17  ---    5 |    71   70   66   68   78   66   65   70   68  ---    67
  26  |    8   17    6   12   17    3   11   10   10   17    3 |    22   26   21   27   27   19   24   23   23   24    20
 X27  |   14   19   18   31  ---   13   13   10  ---  ---    8 |    12   25   24   28  ---   16   21   20  ---  ---    14
  28E |    8   14    5   11   14    3    9   11    9   13    3 |    19   29   22   20   26   23   23   26   28   24    22
  29  |    6   22    7    9   11    5   16    7    9   22    4 |    27   36   30   34   29   28   32   31   33   34    29
 X30E |   20  ---   13  ---   55   15   18   17  ---  ---   11 |    16  ---   18  ---   40   30   16   14  ---  ---    15
  31  |   10   21   13    9   20    5   12    8   13   13    4 |    22   33   32   27   34   25   31   26   28   29    27
  32  |   12   20    7   10   17    3   16    7    9   20    4 |    18   26   21   21   22   15   26   18   16   21    17
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |    8   19    7   13   18    4   13   11   10   21      |T   24   32   27   30   33   25   29   28   28   27    25
 WRMS |    8   19    7   13   17    4   14   10    8   17      |NE  23   31   26   29   32   24   28   28   27   27    24
 MEDI |    8   18    7   12   18    5   13   10   10   17      |MD  22   30   23   25   29   23   27   26   26   24    22



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.
         Units: mm.

Table 4.1665   GPS week: 1665   MJD: 55899.0-55905.0

CENT| CLK EPO  |        BRUS       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 2952 |U   10     9    23 |U   12    11    41 |U    8    14    26 |
emr | emr 2876 |U   13    13    29 |U   13    12    43 |    10    14    30 |
esa | esa 2948 |    10    10    25 |U   11    11    39 |     9    16    24 |
gfz | gfz 2879 |U   16    12    32 |U   17    15    65 |U    9    16    29 |
grg | grg 2823 |    13    13    34 |U   13    12    42 |    11    17    31 |
igr | igr 2910 |    10    10    25 |    11    10    41 |     7    15    24 |
igs | igs 2939 |    10    10    24 |    11    11    40 |     8    14    25 |
jpl | jpl 2860 |U   13    12    30 |U   12    12    41 |U   10    19    31 |
mit | mit 2948 |U   12    10    23 |U   12    12    41 |U   11    16    34 |



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: mm.

Table 5.1665.0   GPS week: 1665   Day: 0   MJD: 55899.0

CENT| CLK EPO  |        BRUS       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 2968 |     9     8    21 |    11    11    33 |     9    36    81 |
emr | emr 2880 |    14    14    27 |    12    12    29 |     9    32    77 |
esa | esa 2976 |     9     9    21 |    10    12    29 |    11    38    66 |
gfz | gfz 2880 |     9     8    18 |    14    19    81 |    13    32    89 |
grg | grg 2879 |    14    12    41 |    11    13    33 |    11    40    63 |
igr | igr 2880 |    11     9    20 |    11    11    31 |     9    33    66 |
igs | igs 2976 |    10    10    21 |    10    11    32 |    10    34    71 |
jpl | jpl 2880 |    15    14    28 |    10    11    28 |    11    36    80 |
mit | mit 2976 |     9     7    17 |    11    13    35 |    22    29    86 |

Table 5.1665.1   GPS week: 1665   Day: 1   MJD: 55900.0

CENT| CLK EPO  |        BRUS       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 2957 |     9    11    17 |     8    12    34 |     7     8    13 |
emr | emr 2880 |    13    19    30 |     9    15    35 |    10     9    21 |
esa | esa 2976 |    12    15    18 |     8    12    33 |     9     9    13 |
gfz | gfz 2880 |    11    14    24 |    14    16    56 |     9     9    15 |
grg | grg 2879 |    11    16    19 |     9    12    35 |    13    16    37 |
igr | igr 2976 |    11    15    20 |     8    10    34 |     8     7    15 |
igs | igs 2974 |    10    14    17 |     8    11    33 |     9     9    13 |
jpl | jpl 2874 |    14    16    36 |     9    14    34 |     9     9    21 |
mit | mit 2976 |     9    13    14 |     9    11    33 |     8    12    20 |

Table 5.1665.2   GPS week: 1665   Day: 2   MJD: 55901.0

CENT| CLK EPO  |        BRUS       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 2867 |    14    13    37 |    17    12    47 |     6    11    19 |
emr | emr 2880 |    14    12    28 |    18    13    45 |    10     7    16 |
esa | esa 2880 |    13    10    33 |    17    12    44 |     8    10    17 |
gfz | gfz 2880 |    15    12    38 |    21    12    50 |     8    10    17 |
grg | grg 2784 |    15    15    36 |    17    13    44 |    11    10    27 |
igr | igr 2880 |    12    10    32 |    17    13    45 |     7    10    19 |
igs | igs 2880 |    12    10    31 |    17    13    43 |     8    10    18 |
jpl | jpl 2784 |    14    11    35 |    17    13    47 |    10     9    22 |
mit | mit 2880 |    12     9    28 |    18    12    43 |    10     9    22 |

Table 5.1665.3   GPS week: 1665   Day: 3   MJD: 55902.0

CENT| CLK EPO  |        BRUS       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 2961 |     9     6    20 |     8     7    25 |     8     7    20 |
emr | emr 2873 |    12     9    33 |     9     9    34 |     9     9    25 |
esa | esa 2880 |    12     7    32 |     6     8    26 |     8     8    19 |
gfz | gfz 2880 |    15     9    36 |    17    11    61 |    10    14    29 |
grg | grg 2779 |    14    14    49 |     7     9    27 |     9     9    21 |
igr | igr 2856 |    10     7    30 |     7     8    28 |     8     7    17 |
igs | igs 2880 |    10     6    26 |     7     7    25 |     8     8    20 |
jpl | jpl 2869 |    12     9    32 |     7     9    30 |     9    10    21 |
mit | mit 2880 |    24    18    33 |     8    10    38 |     9     7    35 |

Table 5.1665.4   GPS week: 1665   Day: 4   MJD: 55903.0

CENT| CLK EPO  |        BRUS       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 2970 |    10     7    22 |    11     9    24 |     8    22    21 |
emr | emr 2871 |    18    14    36 |    13     9    27 |    14    17    27 |
esa | esa 2976 |    10     9    22 |     9     9    23 |    10    29    24 |
gfz | gfz 2880 |    20    13    39 |    19    12    51 |     8    25    23 |
grg | grg 2783 |    14    10    30 |    10     8    29 |    10    29    28 |
igr | igr 2851 |    11     9    23 |    10     8    23 |     8    33    21 |
igs | igs 2913 |    13     9    28 |    11     9    24 |     9    22    25 |
jpl | jpl 2784 |    15    11    32 |    11    11    28 |    10    36    25 |
mit | mit 2976 |    10     7    26 |    10    10    25 |     9    20    23 |

Table 5.1665.5   GPS week: 1665   Day: 5   MJD: 55904.0

CENT| CLK EPO  |        BRUS       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 2973 |    10     7    19 |    17    18    92 |     8     9    13 |
emr | emr 2880 |    13    10    26 |    16    17    83 |     9    10    18 |
esa | esa 2976 |     9     9    23 |    19    17    83 |     8    10    14 |
gfz | gfz 2879 |    18    15    28 |    20    25    96 |     8    13    16 |
grg | grg 2783 |    17    15    32 |    23    18    85 |    11    10    19 |
igr | igr 2956 |     9     9    20 |    17    15    95 |     7     9    13 |
igs | igs 2975 |    10     9    21 |    16    16    89 |     7     8    12 |
jpl | jpl 2868 |    14    13    25 |    18    18    84 |     8     9    17 |
mit | mit 2976 |    10     8    21 |    22    19    77 |    10    15    22 |

Table 5.1665.6   GPS week: 1665   Day: 6   MJD: 55905.0

CENT| CLK EPO  |        BRUS       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 2969 |     9     9    24 |    11     9    34 |     6     5    17 |
emr | emr 2874 |    11    11    25 |    13     9    45 |    11    12    23 |
esa | esa 2976 |     8    11    26 |    10     8    33 |     7     6    17 |
gfz | gfz 2880 |    20    12    38 |    17    12    65 |     7    10    19 |
grg | grg 2879 |     9    11    29 |    12    12    39 |    12     7    24 |
igr | igr 2971 |     9    13    28 |    10     8    34 |     7     6    16 |
igs | igs 2975 |     8    12    26 |    10     8    35 |     7     6    15 |
jpl | jpl 2966 |     9     9    23 |    10     9    36 |    11    25    34 |
mit | mit 2976 |     7     9    22 |    10     9    34 |    10    18    30 |


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                          
        Ypole,Yrt: y pole and y pole rate                       
        LOD      : Length Of Day                                               
                                                                              
        AC LOD BIAS    : 21-day mean LOD bias with respect to Bulletin A     
        AC LOD BIAS RMS: RMS of AC LOD BIAS                              
                                                                              
        FLAG: "u" (used), "x" (excluded), "-" (no submission)                 
              for Xpole, Ypole, Xrt, Yrt and LOD                              

Table 6.1665   GPS week: 1665   MJD: 55899.500-55905.500

                                                         AC LOD  AC LOD
CENT  FLAG  |   Xpole   Ypole     Xrt     Yrt    LOD |    BIAS  BIAS RMS
            |   [uas]   [uas]   [uas/d] [uas/d]  [us]|    [us]    [us]
------------+----------------------------------------+------------------
cod   xxxxx |       6     -13     -34      12     -2 |       5     13
            |      20      13     104      61      5 |       2
emr   uuuuu |      40       1     120     218    -18 |      23     27
            |      18      27     117     148     12 |       7
esa   uuuuu |     -11     -15      63       2     -3 |      -3     10
            |      12      11      24      65      6 |       2
gfz   uuuuu |      16      15      15     103      1 |       3     11
            |      13      16      64      71      5 |       3
grg   uuuux |       8     -35     154       8    -10 |       1     20
            |      13       9      34      66     18 |       4
igr   xxxxx |     -43      10      15     -18     -7 |       5     11
            |      21      15      99      60      3 |       2
irf   xxxxx |      -6       4      11      22     -2 |       1     10
            |      10       4      23      17      5 |       2
jpl   uuuuu |      35     -28     -51     -50      2 |       8     15
            |      25      15     122      57      8 |       2
mit   uuuuu |     -29      22    -143    -121     -2 |       9     14
            |      26      12      57      26      3 |       2
ngs   uuuuu |      15      22     -40     -45      3 |       0     10
            |      56      37      29     123      8 |       1
sio   uuuuu |     -52      18     -36      69     -8 |      22     25
            |      23      11      31      67     12 |       3


Table 7.1665.0   GPS week: 1665   Day: 0   MJD: 55899.500

                                                         AC LOD  AC LOD
CENT  FLAG  |   Xpole   Ypole     Xrt     Yrt    LOD |    BIAS  BIAS RMS
            |   [uas]   [uas]   [uas/d] [uas/d]  [us]|    [us]    [us]
------------+----------------------------------------+------------------
cod   xxxxx |     -11      -5     -50     -81      0 |       4     11
emr   uuuuu |      27       9     137     -45    -11 |      30     32
esa   uuuuu |      -3       5      65     112      3 |      -4      9
gfz   uuuuu |       5       9     -33      57      3 |      -1     10
grg   uuuux |      -2     -44     112     -25     -2 |      -5     25
igr   xxxxx |     -58      18      19      69     -6 |       4     11
irf   xxxxx |     -15       9      -7      18      1 |       0      8
jpl   uuuuu |      17     -27     -18    -140     -1 |      10     17
mit   uuuuu |     -57      30    -112     -89     -4 |       9     14
ngs   uuuuu |      61     -23     -21     -23     -6 |       1     11
sio   uuuuu |     -53      21     -50      67      6 |      18     21

Table 7.1665.1   GPS week: 1665   Day: 1   MJD: 55900.500

                                                         AC LOD  AC LOD
CENT  FLAG  |   Xpole   Ypole     Xrt     Yrt    LOD |    BIAS  BIAS RMS
            |   [uas]   [uas]   [uas/d] [uas/d]  [us]|    [us]    [us]
------------+----------------------------------------+------------------
cod   xxxxx |      23       4     -92     -11     -1 |       6     11
emr   uuuuu |      34     -39     182     227    -25 |      31     33
esa   uuuuu |       4     -24      29      10     -2 |      -2      7
gfz   uuuuu |      14      35     -65     142      6 |       2      9
grg   uuuux |      31     -36     215     -25      8 |      -2     23
igr   xxxxx |     -36      27     -51      28     -3 |       6     10
irf   xxxxx |      -9       6     -21      17      1 |       2      8
jpl   uuuuu |      71     -32      67      -9     -6 |      11     18
mit   uuuuu |     -49      11    -178     -84     -2 |      11     15
ngs   uuuuu |     -17      59      -3    -274      0 |       2     11
sio   uuuuu |     -69      18     -34     190      4 |      21     23

Table 7.1665.2   GPS week: 1665   Day: 2   MJD: 55901.500

                                                         AC LOD  AC LOD
CENT  FLAG  |   Xpole   Ypole     Xrt     Yrt    LOD |    BIAS  BIAS RMS
            |   [uas]   [uas]   [uas/d] [uas/d]  [us]|    [us]    [us]
------------+----------------------------------------+------------------
cod   xxxxx |     -25     -13     -97      49     -1 |       5     12
emr   uuuuu |      64      -2     148     333    -32 |      27     30
esa   uuuuu |      -7     -24      57     -48     -3 |      -3      8
gfz   uuuuu |      -4      22      23      41      5 |       2      8
grg   uuuux |      -4     -36     139       4      3 |       2     20
igr   xxxxx |     -71      12     -63     -44    -10 |       5     11
irf   xxxxx |     -16      -2      29      10      0 |       1      8
jpl   uuuuu |       2     -41    -174       2     -3 |       8     16
mit   uuuuu |     -57      12     -77    -125     -1 |       9     13
ngs   uuuuu |     105      55     -56      36      3 |       0     10
sio   uuuuu |     -77       1      10      60     -2 |      21     23

Table 7.1665.3   GPS week: 1665   Day: 3   MJD: 55902.500

                                                         AC LOD  AC LOD
CENT  FLAG  |   Xpole   Ypole     Xrt     Yrt    LOD |    BIAS  BIAS RMS
            |   [uas]   [uas]   [uas/d] [uas/d]  [us]|    [us]    [us]
------------+----------------------------------------+------------------
cod   xxxxx |      34     -30     157      23      2 |       5     11
emr   uuuuu |      52     -11     191     171    -29 |      23     27
esa   uuuuu |      -8     -15      35     -89      2 |      -2      8
gfz   uuuuu |      22       3      39     176      1 |       3      9
grg   uuuux |      20     -49     152     107    -34 |       6     17
igr   xxxxx |     -44      13      40     -42     -9 |       5     10
irf   xxxxx |       1       5      24      43      1 |       1      8
jpl   uuuuu |      17     -25    -174     -54      1 |       6     12
mit   uuuuu |     -26      42     -78    -139      0 |       9     12
ngs   uuuuu |       5       5     -29     118     -1 |      -1      8
sio   uuuuu |     -41      34     -40     -10     -4 |      23     25

Table 7.1665.4   GPS week: 1665   Day: 4   MJD: 55903.500

                                                         AC LOD  AC LOD
CENT  FLAG  |   Xpole   Ypole     Xrt     Yrt    LOD |    BIAS  BIAS RMS
            |   [uas]   [uas]   [uas/d] [uas/d]  [us]|    [us]    [us]
------------+----------------------------------------+------------------
cod   xxxxx |       1     -19      14     115     -1 |       7     14
emr   uuuuu |      45     -13     197     226    -23 |      21     25
esa   uuuuu |      -9     -28      86      43     -2 |       0     10
gfz   uuuuu |      28      -7      55      23      2 |       6     12
grg   uuuux |      -1     -26     143      73    -37 |       5     17
igr   xxxxx |     -27     -15     107     -66     -4 |       6     11
irf   xxxxx |      10       4      43      46     -5 |       3     10
jpl   uuuuu |      33     -31    -179     -65      2 |       8     14
mit   uuuuu |      11      24    -137    -118     -4 |      10     15
ngs   uuuuu |     -66      58     -26     -92      7 |       0     10
sio   uuuuu |     -13      22     -62      90    -14 |      26     27

Table 7.1665.5   GPS week: 1665   Day: 5   MJD: 55904.500

                                                         AC LOD  AC LOD
CENT  FLAG  |   Xpole   Ypole     Xrt     Yrt    LOD |    BIAS  BIAS RMS
            |   [uas]   [uas]   [uas/d] [uas/d]  [us]|    [us]    [us]
------------+----------------------------------------+------------------
cod   xxxxx |      18      -4    -166      11    -14 |       8     14
emr   uuuuu |      10      49    -138     431     -6 |      17     23
esa   uuuuu |     -19     -12      81       5    -16 |       0     10
gfz   uuuuu |      35       5     120      76     -8 |       7     13
grg   uuuux |       0     -23     180     -90     -7 |       4     19
igr   xxxxx |      -8      17     164     -98     -5 |       6     11
irf   xxxxx |      -3       3      15      22    -12 |       3     10
jpl   uuuuu |      60       2      23    -100     20 |       9     15
mit   uuuuu |      -8      24    -202    -143     -8 |      10     14
ngs   uuuuu |     -15     -23     -55      -4     20 |       2     10
sio   uuuuu |     -38      18     -74      90    -27 |      26     27

Table 7.1665.6   GPS week: 1665   Day: 6   MJD: 55905.500

                                                         AC LOD  AC LOD
CENT  FLAG  |   Xpole   Ypole     Xrt     Yrt    LOD |    BIAS  BIAS RMS
            |   [uas]   [uas]   [uas/d] [uas/d]  [us]|    [us]    [us]
------------+----------------------------------------+------------------
cod   xxxxx |       3     -26      -3     -22     -2 |       1     15
emr   uuuuu |      45      13     124     185      1 |      11     18
esa   uuuuu |     -34     -10      90     -15     -1 |      -6     17
gfz   uuuuu |      15      34     -35     206      1 |       2     15
grg   uuuux |      12     -35     135      14     -2 |      -1     21
igr   xxxxx |     -56      -5    -114      27    -10 |       1     12
irf   xxxxx |     -12       4      -4      -2     -2 |      -2     15
jpl   uuuuu |      48     -41      99      18      1 |       7     14
mit   uuuuu |     -18      12    -215    -148      2 |       5     15
ngs   uuuuu |      34      22     -91     -74      1 |       0     10
sio   uuuuu |     -74       8      -1      -3    -19 |      19     26



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