[IGSREPORT-19746] Wk 1633 IGS Final Orbits

Jim Ray igs.acc at noaa.gov
Fri May 13 01:32:40 PDT 2011


Author:  AC Coordinator / NOAA NGS

sum-file Version 2.0
Final IGS Orbit Combination - Week 1633   (Apr 24, 2011 - Apr 30, 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:

igs1633[0-6].sp3  IGS GPS ephemeris files in SP3 format.
igs1633[0-6].clk  IGS GPS satellite and station clocks in clock RINEX format.
igs1633[0-6].cls  IGS GPS clock combination summary report.
igs16337.erp      Earth Rotation Parameters (ERP) and their rates as well as
                  Universal Time (UT1-UTC) and Length Of Day (LOD) associated 
                  with IGS ephemerides.
igs16337.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  |  ALL   | 27
                0  |  COD   | WILL
                0  |  EMR   | 8 9 8 9
                0  |  ESA   | KERG UNSA
                0  |  GFZ   | 8 9 DAV1 GODE
                0  |  GRG   | RAMO
                0  |  JPL   | 8 9 15 25
                0  |  MIT   | CAS1 BRUS CAS1 MDVJ
                1  |  EMR   | 8 8
                1  |  ESA   | 24 24 UNSA
                1  |  GFZ   | 8 9 27 GUAM MDVJ
                1  |  GRG   | NRC1
                1  |  JPL   | 3 8 9 15 24 25 27 MAW1
                1  |  MIT   | 3 3 9 HRAO MAW1 YAKT HRAO MAW1 YAKT
                2  |  ALL   | 1 1
                2  |  EMR   | 8 9 8 9
                2  |  GFZ   | 6 8 9 27 CAS1 NURK
                2  |  JPL   | 8 9 15 25 MAW1 PERT
                2  |  MIT   | 6 31 6 CAS1 MDVJ CAS1 MAW1 MDVJ
                3  |  ALL   | 1 1
                3  |  COD   | 24 24 USNO CAS1 USNO
                3  |  EMR   | 8 27 8 9 27 WHIT
                3  |  GFZ   | 8 9 27 DAV1 KERG KIT3 UNSA WHIT YAKT
                3  |  JPL   | 8 9 15 25 27
                3  |  MIT   | 24 24 NTUS
                4  |  COD   | WROC CAS1 DARW
                4  |  EMR   | 8 9 8 9
                4  |  ESA   | UNSA
                4  |  GFZ   | 4 8 9 27 MDVJ
                4  |  GRG   | USN3
                4  |  JPL   | 4 8 9 15 25 ASPA
                4  |  MIT   | BOR1 CAS1 DAV1 NYA1
                5  |  COD   | WILL
                5  |  EMR   | 8 8
                5  |  ESA   | UNSA
                5  |  GFZ   | 8 9 27 MDVJ
                5  |  JPL   | 8 25 MDVJ ULAB
                5  |  MIT   | MDVJ DAV1 MDVJ
                6  |  EMR   | 8 8
                6  |  ESA   | DAV1 UNSA
                6  |  GFZ   | 8 9 BAN2 COCO HOLM LPGS MDVJ QAQ1
                6  |  GRG   | AMC2
                6  |  JPL   | 8 25 MAC1 TIXI
                6  |  MIT   | 14 31 14 HARB MAC1 MCM4 DAV1 FAIR HARB MAC1

 5. The following orbit solutions were excluded from the combination because 
    they were biasing the weighted average (generally indicated by long arc RMS).
    They were still used for statistics computation.
    
               Day | Centre | PRN list
               ----+--------+---------------
                4  |  SIO   |   2

 6. 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 G01 |  2 |  1 |    |    |    |  4 |    |

 7. 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.
    

 8. Small rotations were applied to all the AC orbit and ERP values in order
    to align them to the IGS05 frame. These rotations were estimated in the IGS
    SINEX combination process, performed by the IGS Reference Frame Coordinator
    at the Institut Geographique National (IGN), and are based on the common
    stations between the individual AC SINEX solutions and the IGS05.snx SINEX
    frame. 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  |   -1.0     .7    -.2     -24      1    -11     .38
       EMR  |    1.7    1.2    1.0     -11      4     -7     .74
       ESA  |     .2   -1.8    7.5      -2     -2     60     .32
       GFZ  |   -3.3     .2   -1.0     -25     33     18     .34
       GRG  |    4.2    3.0   10.4     -11     30    -17     .34
       JPL  |    1.3    1.4    5.1       8    -60     45    -.82
       MIT  |    4.4   -3.7    9.5      -8     10    -13     .41
       NGS  |    5.8   -6.1    4.7     -28    -16     24     .60
       SIO  |    2.5    -.9   -7.7     -22   -132     -4     .40


 9. 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.

10. 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.

11. 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 does not yet use IGS08/igs08.atx, which causes their RMS
    clock residuals to be higher than for the other centres; for the same
    reason, 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 1.1633.a). It also displays the computed satellite
position sigmas for the combined orbits (table 1.1633.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 2.1633.[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 3.1633.[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 5.1633.0-6).

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 1633 summary.                       (Apr 24, 2011 - Apr 30, 2011)

Table 1.1633.a   GPS week: 1633   MJD: 55675.000-55681.000

         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  247|    1     0     1     2   -30   -11  -.26    8    7 |    -432    -245     14     82
        |    0     0     0     9    10    20   .01           |     391     636
emr  110|    0     1     0    12   -12    -6   .43   19   19 |    -578    -126     14    102
        |    1     1     2    32    14    15   .03           |     757    1043
esa  139|    0     0     0   -27     8    16   .28    9    8 |   -1823    1572     14    142
        |    0     0     1    26    15     9   .03           |    1160    1845
gfz  190|    0     0    -2    36   -51    16  -.15   11   11 |      56     151     21    134
        |    0     1     1    48    53     5   .02           |     375     753
grg  131|    2     1     0   -24   -70   -12   .63   16   15 |    -117      40     47    221
        |    1     0     4    21    29    11   .04           |     332     712
igr  n/a|    0     0    -2   -21    -2   -19  -.03    5    5 |     138    -614     18    103
        |    0     0     0    16    15    22   .01           |    1012     830
jpl  129|    0     1     0   -40   114     1   .49   21   19 |     601    -165     18    340
        |    1     0     1    20    23    18   .03           |     753     901
mit  259|    0    -1     0   -20   -18   -14  -.36   13   11 |    -241     115     19    152
        |    0     0     1    36    29    16   .01           |     276     509
ngs  213|    0     0    -1    22     5   -13  -.19   10    9 |   50490 -143205   2076   3642
        |    1     1     1    30    18    13   .02           |  134376  377810
sio  249|   -2     1     4    23   262    14  -.40   23   20 |     ---     ---    ---    ---
        |    0     0     1    36    32    24   .03           |     ---     ---


Table 1.1633.b   GPS week : 1633   MJD: 55675.000-55681.000   

         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  |    0    0   18   21    0    0    0 |
   2  |    5    5    5    5    6    5    5 |
   3  |    4    3    3    3    4    3    4 |
   4  |    5    4    4    4    4    4    4 |
   5  |    5    5    5    5    5    5    5 |
   6  |    4    3    3    3    4    3    4 |
   7  |    4    4    4    4    4    4    5 |
   8  |    6    5    5    4    5    5    4 |
   9  |    5    5    5    5    5    7    5 |
  10  |    6    4    4    4    4    4    4 |
  11  |    4    4    4    4    4    4    4 |
  12  |    5    5    5    5    6    6    5 |
  13  |    5    4    5    4    5    5    5 |
  14  |    5    5    5    5    5    5    5 |
  15  |    5    5    5    5    5    5    5 |
  16  |    5    5    5    4    5    5    5 |
  17  |    5    4    4    4    5    5    5 |
  18  |    5    5    5    5    5    5    5 |
  19  |    5    5    4    5    5    5    5 |
  20  |    5    5    5    5    4    5    4 |
  21  |    4    5    5    4    5    5    4 |
  22  |    5    5    4    4    5    5    5 |
  23  |    5    5    5    5    5    5    5 |
  24  |    5    4    4    4    4    4    4 |
  25  |    4    4    4    5    5    5    5 |
  26  |    4    3    4    4    4    4    4 |
  27  |    5    5    5    6    6    6    5 |
  28  |    5    5    5    5    5    5    5 |
  29  |    5    5    5    5    5    5    5 |
  30  |    6    4    4    4    4    4    4 |
  31  |    5    5    5    5    6    6    5 |
  32  |    4    4    5    6    4    4    4 |



Table 2: Daily transformation of each centre to the combined IGS orbit and
         clocks for each day of the week. The transformation displayed is the
         sum of a priori and estimated transformations.
         WRMS - RMS weighted by the centres SP3 header accuracy codes.
         STA  - Number of stations in the daily solutions.
   
Table 2.1633.0   GPS week: 1633   Day: 0   MJD: 55675.000                            

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  247|    0    -1     2    13   -37   -36  -.26    8    7 |    -198      60     14     69
        |                      1    35                       |
emr  110|   -1     3    -1    11     6    14   .45   20   20 |    -465    1574     14     91
        |                    -31   -43                       |
esa  139|    0     0    -1     8    -2    14   .30    9    9 |   -2241    3043     13    117
        |                     44    14                       |
gfz  190|    0     1     0   -23    24    17  -.15   11   11 |     -33     653     21    128
        |                      0    32                       |
grg  131|    2     1     4    -1   -97   -25   .62   16   16 |    -407    1279     38    207
        |                    -24   106                       |
igr  n/a|    0     0    -4   -19    -2   -14  -.04    5    5 |    1566     578     17     89
        |                     14    18                       |
jpl  129|    0     2     0   -19   120   -11   .46   21   19 |     667    1184     18    342
        |                    -10   -36                       |
mit  271|    1    -2     0   -55   -19     0  -.37   15   13 |    -257     744     21    155
        |                     -8    13                       |
ngs  213|    0    -2    -3    32   -22   -15  -.17    9    7 |     -25     -11   1963   3549
        |                     59   -32                       |
sio  249|   -3     1     4   -22   225    56  -.40   26   21 |     ---     ---    ---    ---
        |                    -73  -145                       |

Table 2.1633.1   GPS week: 1633   Day: 1   MJD: 55676.000                            

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  247|    0     1     0     0   -33    11  -.26    8    8 |   -1189     668     17     78
        |                     47    18                       |
emr  110|    0     0    -1   -21     2    -3   .45   19   19 |    -269    -448     16    104
        |                      2   -22                       |
esa  139|    0    -1     1   -31    -3     1   .27    8    8 |   -2077    1371     13    117
        |                     33    17                       |
gfz  190|   -1     0    -2    50   -10     8  -.14    9    8 |    -475     686     22    128
        |                      0    62                       |
grg  131|    2     2     3   -45   -68    -7   .61   16   14 |    -620     597     37    228
        |                     89    14                       |
igr  n/a|    0     0    -3     6    10     0  -.02    4    4 |     945    -992     16     94
        |                     10    -3                       |
jpl  129|    0     2    -2   -45   131    13   .53   21   20 |     664    -409     19    343
        |                     53   -17                       |
mit  271|    0    -2    -1     5   -43   -20  -.36   12   11 |    -750     772     18    138
        |                    -17    17                       |
ngs  213|    0    -1     0     3     2   -20  -.20   10    8 |  355228 -999999   2127   3685
        |                     43   -45                       |
sio  249|   -2     2     2    43   235    14  -.37   22   19 |     ---     ---    ---    ---
        |                    -81  -160                       |

Table 2.1633.2   GPS week: 1633   Day: 2   MJD: 55677.000                            

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  247|    0     0     2     1   -29   -36  -.27    8    7 |    -173   -1269     15     82
        |                     50    39                       |
emr  110|   -1     2    -2   -28    -8    11   .43   18   18 |    -719   -1341     19    115
        |                     12   -10                       |
esa  139|    0     0     0   -22     8    32   .31   10   10 |   -2576    2442     14    130
        |                     69    23                       |
gfz  190|   -1     0    -3    88   -91    25  -.18   10   10 |     121    -201     20    134
        |                    -26    79                       |
grg  131|    2     1     6   -42   -81   -18   .68   14   14 |    -112     -57     83    257
        |                     87    26                       |
igr  n/a|    0     0    -1    -7    17    19  -.04    5    4 |     438   -1734     19    104
        |                     -2    51                       |
jpl  129|    0     1    -1   -52   108   -13   .49   20   19 |     463   -1271     18    340
        |                     13    65                       |
mit  271|    0    -2     0    -9     8    16  -.35   13   12 |    -124    -153     22    159
        |                    -18    -4                       |
ngs  213|    1    -1    -4     8    22   -23  -.16    9    8 |    -298   -1095   2178   4058
        |                     -9   -22                       |
sio  249|   -2     0     3    25   279    39  -.37   21   18 |     ---     ---    ---    ---
        |                    -75  -162                       |

Table 2.1633.3   GPS week: 1633   Day: 3   MJD: 55678.000                            

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  247|    1     0     0     7   -35    14  -.26    8    7 |    -578    -124     13    120
        |                     45    41                       |
emr  110|    1     2     0     0   -24   -28   .41   19   19 |   -2048    1022     14    120
        |                    -50    22                       |
esa  139|    0    -1     0   -34    17    10   .23    8    7 |     677     791     12    232
        |                     39    20                       |
gfz  190|    0     0    -1    35   -79    16  -.16   11   10 |     133    -268     19    148
        |                    -23    62                       |
grg  131|    2     2     2   -18   -75   -21   .68   15   14 |    -205    -303     41    221
        |                     68    -3                       |
igr  n/a|    0     0    -3   -23   -21   -27  -.03    5    5 |   -1298     379     21    116
        |                     15    63                       |
jpl  129|    2     3     0   -39    72     4   .52   21   19 |    -831     881     18    365
        |                     23    84                       |
mit  271|    0     0    -1   -10     3   -21  -.36   13   11 |    -387    -106     16    154
        |                    -21     2                       |
ngs  213|   -3     0    -1    17    15   -11  -.18   10    9 |    -495    -254   2054   3595
        |                     41   -23                       |
sio  249|   -1     0     3    38   285     2  -.42   21   19 |     ---     ---    ---    ---
        |                    -73  -164                       |

Table 2.1633.4   GPS week: 1633   Day: 4   MJD: 55679.000                            

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  247|    1     0     0     2   -27    -7  -.27    9    8 |    -388    -162     13     78
        |                     32    15                       |
emr  110|   -1     0     3    55   -10    -5   .41   19   19 |    -403    -901     14     89
        |                   -100    12                       |
esa  139|   -1     0     0   -56    32    19   .28    9    8 |   -1695      68     16    129
        |                     49    -1                       |
gfz  190|    1     0    -3    25  -129    13  -.15   12   12 |     577    -657     21    131
        |                    -26    79                       |
grg  131|    2     1    -3   -52   -56     4   .61   15   14 |     363    -911     46    236
        |                     87   -23                       |
igr  n/a|    0     0    -1   -32     0   -27  -.04    6    5 |    -215   -1153     19    108
        |                      0    65                       |
jpl  129|   -1     0     0   -40   125    35   .47   20   18 |     762    -786     19    337
        |                    -15    13                       |
mit  271|    0    -1     0    -1   -28   -25  -.37   11    9 |     127    -584     20    145
        |                    -21    -2                       |
ngs  213|    0     1     0    66    30   -33  -.20   12   11 |    -329    -270   2207   3474
        |                    -38    21                       |
sio  249|   -2     1     6    27   253   -11  -.41   28   19 |     ---     ---    ---    ---
        |                    -45  -153                       |

Table 2.1633.5   GPS week: 1633   Day: 5   MJD: 55680.000                            

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  247|    0     0     1     8   -37   -16  -.27    8    7 |       8    -865     15     79
        |                    -11    60                       |
emr  110|   -2     0     4    46   -34   -10   .40   19   19 |     479    -358     13    101
        |                    -89   -11                       |
esa  139|    0     0    -2     3   -12    19   .27    9    8 |   -2805    4348     18    131
        |                     27    13                       |
gfz  190|    0     1    -2   -21   -17    18  -.14   14   13 |     405    -517     22    136
        |                    -12    76                       |
grg  131|    5     0    -3    -3  -101    -1   .63   15   14 |     151      49     44    199
        |                     25    26                       |
igr  n/a|    0     0    -3   -33   -24   -44  -.03    5    5 |     441    -569     19    112
        |                      8    46                       |
jpl  129|    0     1     2   -10   101     2   .44   20   18 |    1733     -61     19    312
        |                    -54    43                       |
mit  271|   -1    -1     0   -86    14   -27  -.35   13   11 |     -69     311     19    161
        |                      8     0                       |
ngs  213|    0    -2    -1    52    -7     3  -.22   12    9 |     -91    -730   2270   4011
        |                    -41    53                       |
sio  249|   -2     1     5   -24   317     4  -.44   22   21 |     ---     ---    ---    ---
        |                    -72  -166                       |

Table 2.1633.6   GPS week: 1633   Day: 6   MJD: 55681.000                            

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  247|    1     0     1   -16    -8    -5  -.25    8    8 |    -509     -26     16     70
        |                    100   -17                       |
emr  110|    0     2     0    23   -18   -22   .47   20   20 |    -626    -432     14     98
        |                    -51    -5                       |
esa  139|    0     0    -2   -57    18    16   .28    8    8 |   -2044   -1055     18    138
        |                     56    33                       |
gfz  190|    0     1    -1    99   -60    17  -.12   10    9 |    -336    1364     23    135
        |                     -6    97                       |
grg  131|    1     0    -4    -9   -13   -17   .59   17   16 |       6    -372     45    205
        |                      8   -68                       |
igr  n/a|    0     0    -3   -39     0   -41  -.01    5    5 |    -906    -808     18    103
        |                     33    14                       |
jpl  129|    0     2     2   -73   144   -19   .52   21   19 |     755    -694     20    341
        |                     21   -16                       |
mit  271|    0    -2     2    14   -63   -22  -.34   12   10 |    -232    -177     17    153
        |                     -9     5                       |
ngs  213|    0     0     0   -21    -2     1  -.19   10    8 |    -554     -79   1737   3124
        |                     91  -109                       |
sio  249|    0     0     6    78   244    -5  -.39   23   23 |     ---     ---    ---    ---
        |                   -101  -139                       |

       
       
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 3.1633.0   GPS week: 1633   Day: 0   MJD: 55675.000                            

        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
------+--------------------------------------------------------+---------------------------------------------------------
  X1  |    5  ---  ---  ---  ---  243  ---  ---  ---  ---    0 |    64  ---  ---  ---  ---  128  ---  ---  ---  ---    67
   2  |    8   24    9   10   16    6   26   12    8   23    4 |    42   38   32   38   22   37   36   40   39   47    35
   3  |    6   15    7    9   13    7    9   10    9   18    3 |    19   21   25   24   25   21   22   17   23   21    21
   4  |    8   15   11    9   13    5   17   18    7   31    4 |    15   26   17   15   20   13   23   22   19   30    14
   5  |    8   20    9   12   21    5   23   16    7   19    4 |    19   30   19   21   27   20   31   25   25   28    20
   6  |    6   15    8    8   13    5    9   11    7   19    3 |    26   26   31   28   33   26   26   22   29   26    27
   7E |    7   18   12   10   17    6   15   10    9   14    4 |    14   23   19   15   23   14   18   15   19   14    15
   8E |   14   20   11   13   16    5   16   20   12   27    5 |    37   50   38   39   46   37   48   36   39   36    38
   9E |    9   23   11   11   25    4   18   13    7   22    5 |    70   73   70   69   78   68   72   68   71   71    70
  10  |   11   18   10    9   12    4   19   27   10   50    6 |    42   47   43   39   41   39   48   23   40   25    37
  11  |    5   14    8    9   19    4   16   13    8   14    4 |    25   29   25   27   33   24   29   24   31   27    24
  12  |   10   27    7    9   17    5   26   13    8   28    5 |    25   40   27   26   33   24   35   23   28   25    25
  13  |    7   18   13   13   19    6   25   15    8   19    5 |    21   32   27   25   35   20   31   22   23   18    22
  14  |    7   22   10   16   17    5   26   13    9   23    5 |    23   33   30   33   34   28   27   30   32   26    26
  15  |    6   23    9   11   19    4   26   11   12   21    5 |    17   30   22   22   31   20   26   19   25   20    19
  16  |    7   21   12   11   14    5   26   17    7   29    5 |    17   31   20   19   26   17   30   20   19   20    18
  17  |    8   15    7    9   12    5   18   15   11   32    4 |    23   26   23   22   23   22   24   26   22   30    20
  18  |    7   28    9   13   19    3   24   14    6   21    5 |    20   41   27   17   33   22   38   20   27   26    24
  19  |    6   18    8    9   15    8   17   14    9   32    4 |    28   31   31   29   27   26   32   29   30   33    28
  20  |    8   24   10   14   16    5   25   15   12   15    5 |    18   35   24   23   30   21   35   22   26   25    21
  21  |    7   21    8   10   14    4   20   12    8   21    4 |    14   29   21   17   28   19   27   18   24   21    17
  22  |    7   24    7    9   20    3   24   14    4   15    4 |    17   35   22   17   33   18   34   20   22   24    20
  23  |    6   19   10   12   16    5   26    9    7   36    5 |    18   28   24   25   26   19   27   21   23   36    19
  24  |    8   18   15    9   14    6   12   18    9   22    4 |    18   30   28   18   19   18   25   20   27   23    19
 X25  |    8   16    9    8   15    5   21    9    7  ---    4 |    18   28   24   17   34   18   37   16   18  ---    20
  26  |    6   12    7    9   15    4   12   12    8   15    3 |    14   17   19   18   22   16   15   19   22   17    16
  27E |    9   21   13   11   23    4   20   13    8   22    5 |   114  114  116  114  112  114  109  119  115  116   114
  28  |    8   21    7   11   16    5   26   19   10   18    5 |    18   33   24   19   31   19   32   25   24   16    20
  29  |    7   16    9   13   14    5   20   11   10   46    5 |    21   27   24   24   21   21   26   22   24   40    22
  30  |    8   18    7   12   14    4   18   28   12   25    5 |    61   63   61   58   52   62   63   58   69   53    60
  31E |    9   21    7   18   11    7   27   14   12   29    5 |    22   29   24   27   26   22   26   24   29   25    22
  32  |    8   19    9   11   13    5   20   12   10   17    4 |    62   60   58   62   57   59   59   66   64   66    60
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |    8   20    9   11   16    5   21   15    9   26      |T   30   37   32   30   34   32   35   30   33   32    30
 WRMS |    7   20    9   11   16    5   19   13    7   21      |NE  26   33   28   26   30   28   32   25   29   28    26
 MEDI |    7   19    9   11   16    5   20   13    8   22      |MD  21   31   25   24   31   21   31   22   26   26    22

Table 3.1633.1   GPS week: 1633   Day: 1   MJD: 55676.000                            

        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
------+--------------------------------------------------------+---------------------------------------------------------
  X1  |    4  ---  ---  ---  ---   53  ---  ---  ---  ---    0 |   140  ---  ---  ---  ---  139  ---  ---  ---  ---   144
   2  |    8   20    8   10   17    3   24   10   10   24    4 |    41   39   35   41   25   38   35   43   39   48    38
   3  |    5   12    8    8   11    4   14   10    8   15    3 |    10   15   15   16   16   10   12   11   14   16    11
   4  |   10   17    7    8   14    3   15   13    9   26    4 |    13   27   19   19   17   16   22   26   18   33    17
   5  |    7   19    9    8   18    6   23   15    8   19    4 |    13   26   15   18   22   14   26   20   22   22    15
   6  |    6   11    8    7    9    4   10   10   12   16    3 |    17   18   21   21   20   16   15   18   22   20    18
   7E |    8   13   10    7   12    4   17    8   11   13    3 |    14   19   16   15   20   13   21   16   17   17    14
   8E |   11   20    6    8   15    5   16   14    8   25    4 |    27   43   30   31   40   29   42   30   29   30    30
   9E |    9   21    8    9   28    5   22   13   10   20    5 |    61   66   62   64   69   63   65   63   64   66    62
  10  |    8   12    6    8   17    3   13   12    9   12    3 |    22   26   23   22   23   21   26   22   27   27    22
  11  |    9   14    9    7   18    3   17   11    9   13    4 |    18   23   22   24   25   17   23   23   17   25    18
  12  |    8   21    8    7   17    4   27    9   12   25    4 |    16   26   18   19   25   16   26   21   19   19    16
  13  |    6   18    8    7   19    5   23   11   10   19    4 |    18   31   20   19   34   19   33   21   19   16    19
  14  |   10   22   10   12   12    5   27   12    8   21    4 |    15   31   26   27   27   21   29   19   17   19    20
  15  |    6   23    9    8   15    6   30   11   11   21    4 |    11   28   16   17   23   13   26   17   16   17    12
  16  |    8   25   11   10   14    3   28   14    9   18    5 |    14   30   19   16   22   15   31   16   18   14    16
  17  |    8   13    9   10    9    8   17   14    8   29    4 |    13   16   17   23   14   17   18   22   19   27    15
  18  |    8   27   10   12   16    4   30   13    9   20    5 |    15   34   19   15   29   15   31   14   17   19    16
  19  |    6   18    7    8   11    5   20   15    8   30    4 |    20   24   20   22   19   19   27   20   21   22    19
  20  |    7   19    8    9   17    3   20   15   14   17    4 |    15   26   21   18   26   17   26   20   18   21    16
  21  |    7   22    9    9   17    5   22   11   10   19    4 |    13   25   16   15   27   13   24   17   17   19    13
  22  |    6   20    7    6   18    4   29   14    6   14    4 |    14   26   18   16   30   15   29   15   15   17    15
  23  |    8   19    9    8   16    5   23    8   12   37    5 |    16   28   21   18   23   16   29   19   17   37    15
  24  |    8   17    8    7   12    5   11   14   11   21    4 |    14   25   20   18   18   14   21   22   17   19    15
 X25  |    7   12    6    9   13    4   23   10    7  ---    4 |    15   24   20   18   31   14   35   15   14  ---    17
  26  |    5   12    7    7   12    5   15   10    8   12    3 |    11   16   12   17   16   11   13   17   18   15    12
  27E |   11   24    9    9   21    5   22   12    8   19    4 |   109  104  105  109   99  106  109  112  104  108   105
  28  |    7   21    8   11   14    6   25   17   10   18    4 |    16   31   26   24   30   21   31   19   25   17    20
  29  |    5   15    6    9   14    4   19   10   14   46    5 |    11   20   15   15   14   11   20   15   17   30    12
  30  |   13   11    7    6   11    3   15   10   10   31    4 |    28   30   25   28   30   26   29   26   33   27    27
  31E |   11   21    8   11   16    5   25   11    9   16    4 |    25   34   24   32   29   28   32   30   27   29    26
  32  |    6   16    8    8   10    5   17   12    9   17    3 |    80   82   80   82   79   80   80   85   81   82    81
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |    8   19    8    9   16    4   21   12   10   22      |T   27   32   26   27   29   27   31   26   26   29    28
 WRMS |    8   19    8    8   14    4   20   11    8   19      |NE  23   27   22   22   25   23   27   22   22   25    24
 MEDI |    8   19    8    8   15    5   22   12    9   19      |MD  15   26   20   19   25   16   27   20   18   21    17

Table 3.1633.2   GPS week: 1633   Day: 2   MJD: 55677.000                            

        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
------+--------------------------------------------------------+---------------------------------------------------------
  X1  |   26  ---  ---  ---  ---   66  ---   24   24  ---   17 |    55  ---  ---  ---  ---   83  ---   12   24  ---    54
   2  |    8   22   12   13   17    4   25   12   10   18    5 |    54   47   44   52   38   48   48   50   51   61    48
   3  |    6   13    6    7   11    5   13   10    6   14    3 |    15   18   16   20   23   16   16   15   13   18    15
   4  |    9   15    9   10   13    5   13   14    8   24    4 |    12   20   15   14   22   14   20   16   14   24    12
   5  |    7   22   11    8   16    4   22   15    9   13    4 |    15   28   17   16   25   17   29   20   14   22    15
   6  |    7   13    5    9   11    6   13    9    9   13    3 |    21   20   19   25   25   20   18   17   19   19    19
   7E |    8   16   10    8   11    3   16    7   10   12    3 |    16   20   16   19   22   12   17   15   14   14    13
   8E |   10   20    7   10   15    4   17   18   10   26    5 |    29   44   34   33   38   31   43   29   33   30    31
   9E |    7   22   10    9   18    5   19   11   11   21    4 |    46   47   44   45   43   42   46   43   45   39    43
  10  |    7   14    8   10   15    4   13   15    8   10    3 |    15   23   17   20   20   16   26   19   16   19    16
  11  |    8   14    9    6   18    5   16   10    6   13    3 |    20   23   20   20   27   19   22   21   21   26    18
  12  |    8   22   10   14   16    5   25   11   11   22    5 |    20   31   20   22   26   19   30   23   27   24    20
  13  |    5   19   12   11   17    4   23   12    8   19    4 |    16   28   21   24   32   17   29   18   19   17    18
  14  |    9   21   11   11   13    6   24   11   12   20    4 |    18   32   30   26   30   25   30   22   26   21    22
  15  |    6   22   11   13   14    5   23   13   11   20    4 |    13   28   17   19   23   15   26   20   21   19    15
  16  |    6   23   11   10   14    4   27   14    6   19    4 |    15   29   19   18   24   18   30   19   17   19    16
  17  |    5   13    9    9    8    4   15   14    7   29    4 |    17   19   17   18   19   14   19   18   14   28    14
  18  |    8   24    6   14   14    4   26   13   10   20    5 |    19   34   24   22   33   22   34   18   21   22    21
  19  |    7   15    6    7   12    4   18   14    8   30    4 |    22   23   19   21   17   18   25   21   20   25    19
  20  |    7   21   15   12   15    3   22   15   10   14    4 |    16   28   23   19   28   18   29   20   16   20    16
  21  |    8   22    9   11   17    5   19   10    8   18    4 |     9   25   13   12   24    9   22   11   11   16     7
  22  |    6   19   10    6   15    4   26   13    8   12    4 |    17   29   23   17   32   20   33   18   20   20    19
  23  |    5   18   11   12   12    3   23   11    9   37    5 |    15   27   19   22   25   17   28   18   18   36    16
  24  |    6   13   12    7   12    4   11   12   11   20    4 |    11   18   16   11   17   12   18   16   16   16    10
 X25  |    8   16    8   10   12    5   20   10    8  ---    4 |    16   23   18   18   31   17   34   17   14  ---    15
  26  |    6   13    8   10   13    5   10   15   10   12    3 |    12   17   16   12   18   14   18   12   20    9    12
 X27E |    9   26   10    8   21    7  ---   12   10   20    5 |    78   76   78   76   75   79  ---   80   78   77    77
  28  |    6   24   11   15   14    5   26   18    8   20    5 |    17   37   26   28   33   20   32   20   23   16    21
  29  |    7   15    8   13   12    4   18    9    9   47    5 |    15   20   18   20   15   15   23   15   18   32    14
  30  |    8   14    9    9   13    4   13   10   11   25    4 |    21   32   23   24   25   26   26   19   29   22    22
  31E |    9   21   12   13   15    7   23   11   13   13    5 |    19   31   25   26   30   25   30   22   24   24    22
  32  |   15   16   12   11   13    4   19   11   12   16    4 |    51   58   57   52   56   52   62   44   49   53    51
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |    8   18   10   10   14    5   20   13    9   21      |T   22   30   24   24   28   24   28   22   23   26    22
 WRMS |    7   18   10   10   14    4   19   12    8   18      |NE  20   27   21   22   26   22   27   19   21   24    20
 MEDI |    7   19   10   10   14    4   19   12    9   19      |MD  17   28   19   20   25   18   28   19   20   22    18

Table 3.1633.3   GPS week: 1633   Day: 3   MJD: 55678.000                            

        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
------+--------------------------------------------------------+---------------------------------------------------------
  X1  |   24  ---  ---  ---  ---   55  ---   29   36  ---   20 |    66  ---  ---  ---  ---  106  ---   10   25  ---    64
   2  |    7   21    7   16   15    3   26   12    8   17    4 |    49   46   43   43   38   43   47   46   47   54    44
   3  |    5   10    6    6   14    4   10    9   11   14    3 |    18   20   20   21   25   17   20   15   20   18    19
   4  |    7   19    8   10   10    5   14   13   10   25    4 |    12   21   17   15   17   14   20   20   16   25    13
   5  |    5   23    8   11   16    4   23   14   11   11    4 |    17   31   20   19   25   17   29   22   19   24    17
   6  |    5   10    6    8   11    4   11    9   10   11    3 |    24   25   27   26   29   23   25   20   25   22    25
   7E |    9   17    7   11   11    5   16   10    8   14    3 |    17   21   19   19   24   15   21   18   20   21    17
   8E |    9   17    5   11   15    3   17   12    9   21    4 |    33   45   35   35   46   36   47   31   37   34    36
   9E |   10   25    9   11   28    5   21   10    9   18    5 |    65   72   67   70   65   67   70   70   65   70    67
  10  |    9   14    6   11   14    3   14   12    8   10    3 |    15   22   15   20   17   15   23   18   19   20    15
  11  |    7   15    7    6   16    5   15    9   10   12    3 |    22   26   23   25   31   22   27   23   23   27    22
  12  |    8   23    8   12   13    4   28   11   15   21    5 |    16   32   21   18   24   17   32   19   22   19    17
  13  |    5   18    6   10   15    5   22    9    9   16    4 |    18   30   21   21   34   19   31   21   17   20    19
  14  |   10   20   11   13   14    7   31   10    8   19    5 |    22   31   32   33   31   27   30   27   27   23    24
  15  |    5   23    6    9   16    3   24   14   12   18    4 |    16   31   22   19   25   18   27   21   20   17    17
  16  |    6   21    7   11   13    3   24   10   12   18    4 |    18   29   19   20   26   18   30   19   23   17    18
  17  |    6   14    9   10    7    4   16   12    9   29    4 |    20   22   19   20   19   18   24   20   21   28    17
  18  |    7   22    8    9   15    3   29   12   10   20    4 |    17   34   24   18   30   20   35   19   21   23    20
  19  |    6   15    8   10   13    6   18   17   10   30    4 |    19   22   21   20   17   18   23   22   22   25    18
  20  |    5   21    7   11   13    5   23   15   15   13    4 |    15   28   19   19   27   18   32   20   25   22    18
  21  |    5   22    4    9   13    4   20   12   10   21    4 |    19   30   19   18   26   19   26   19   18   25    17
  22  |    6   15    6   10   18    4   28   12   11   10    4 |    18   28   20   18   31   17   34   19   20   20    19
  23  |    5   19    6   13   12    7   23   10    9   35    4 |    16   26   18   20   25   16   28   19   18   38    15
  24  |    8   15    8    7   13    4   12   10   14   20    4 |    16   23   21   18   20   14   23   16   20   16    16
 X25  |    8   16    6   17   12    5   34    7   10  ---    5 |    16   26   19   20   30   17   45   16   15  ---    16
  26  |    7   13    6    7   14    4   11   15    8   13    3 |    14   17   16   13   20   13   18   14   18    9    13
  27E |   11   26   11   12   26    6   20   13    8   25    5 |   140  135  138  141  134  139  132  141  138  139   137
  28  |    5   22    8   10   13    5   26   14   10   16    4 |    17   34   20   16   31   18   34   18   20   16    17
  29  |    7   13    4    9   12    3   21    9   10   44    5 |    17   21   19   17   17   17   27   18   19   32    17
  30  |    5   12    7    9   11    4   13    9   12   23    3 |    31   31   31   31   32   27   31   30   32   33    30
  31E |    8   18    8   16   15    5   24   10   10   23    4 |    26   31   27   29   31   27   30   28   28   30    24
  32  |   19   18   10   12   21    5   23   26    9   21    6 |   118  126  125  124  118  121  125  135  126  131   123
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |    8   19    8   11   15    5   21   13   10   21      |T   29   36   30   30   34   31   36   29   30   33    29
 WRMS |    7   19    7   10   14    5   19   11    9   19      |NE  24   31   25   25   29   26   32   24   25   28    24
 MEDI |    7   18    7   10   14    4   21   12   10   18      |MD  18   29   21   20   27   18   30   20   21   23    18

Table 3.1633.4   GPS week: 1633   Day: 4   MJD: 55679.000                            

        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
------+--------------------------------------------------------+---------------------------------------------------------
  X1  |    4  ---  ---  ---  ---  231  ---  ---  ---  ---    0 |    49  ---  ---  ---  ---   80  ---  ---  ---  ---    49
   2  |   11   23    8   16   18    6   24   11   10  100    5 |   116  111  109  111  104  110  113  116  112  150   111
   3  |    8   12    8   12   17    5   10    7   12   15    3 |    13   18   20   15   21   14   15   11   20   13    14
   4  |    8   13    6   12   13    5   12    9   11   27    4 |     9   17   14   15   14   15   20   18   11   29    12
   5  |    7   23   10   11   19    5   20    9   10   12    4 |    17   31   18   20   26   17   28   21   20   24    18
   6  |    7   11    9    9   14    5   11    6   12   11    3 |    21   23   23   21   24   21   20   19   27   17    20
   7E |    8   15   10   12   13    4   17   13   13   15    4 |    12   19   15   16   23   12   19   16   14   17    11
   8E |   10   18   10   13   17    5   15   11   10   22    4 |    32   41   36   30   42   32   44   28   32   28    31
   9E |   12   20    9   12   16    4   21   11   15   23    5 |    57   52   59   57   47   60   54   57   64   53    55
  10  |   10   14    5   14   16    5   15    9    9   12    4 |    13   22   17   21   18   18   26   18   17   20    16
  11  |    9   14    7    9   16    5   18    7   12   17    4 |    18   26   22   21   22   19   25   22   21   26    19
  12  |   10   24    9   14   16    5   24   12   17   23    5 |    17   30   21   18   26   18   31   22   23   22    18
  13  |    6   22    8   16   16    5   23    8    8   16    4 |    16   29   18   20   34   17   30   17   19   15    16
  14  |    9   21   13   13   14    6   25   13   11   20    5 |    20   29   29   27   32   23   31   22   21   18    23
  15  |    5   22   12    8   18    5   24   16   12   20    5 |    19   32   24   23   32   22   31   24   25   20    21
  16  |    8   19    7   12   15    4   27    8    9   19    4 |    14   26   20   17   25   16   32   17   19   13    16
  17  |   10   13   11   14    7    4   17   10   12   37    5 |    17   24   23   21   18   20   24   22   21   33    18
  18  |    7   25    8   10   16    7   26    9   13   20    5 |    13   33   21   18   28   18   31   16   17   20    16
  19  |    9   18   11   11   12   11   17   10   16   29    5 |    22   26   22   20   17   23   28   21   27   24    20
  20  |    9   20    5   11   16    6   21   13   10   11    4 |    12   26   20   16   23   15   27   21   16   20    16
  21  |    9   25    9    9   17    4   21    7   10   20    4 |    15   28   19   16   24   15   28   15   17   19    15
  22  |    7   20   10   11   20    6   23   11    8   13    4 |    15   30   22   17   31   18   28   19   19   20    18
  23  |    5   19    7   18   15    4   23    9   10   37    5 |    17   27   20   22   25   16   30   19   19   37    17
  24  |    7   14    8   10   10    6   13    9   14   21    4 |    10   21   19   14   13   12   23   17   19   18    14
 X25  |    6   20    9   13   11    4   21    9   12  ---    4 |    11   26   21   14   28   15   38   13   18  ---    14
  26  |    5   13    6    7   14    6   13   16   11   11    3 |    13   16   17   14   18   11   17   23   13   14    14
  27E |   21   25    8   14   20    7   21   10   12   31    6 |   104   97   97  103  103   94   97  101   95  108   100
  28  |    6   21   10   14   14    5   22    9   10   20    4 |    15   33   22   20   32   19   32   18   19   18    19
  29  |    8   13    6   13   15    5   17    7   16   43    5 |    16   20   18   16   15   19   25   15   22   29    16
  30  |    8   13    5   10    9    4   12    7   13   18    3 |    20   23   16   13   20   18   23   15   21   14    16
  31E |   11   23    7   16   18    6   22   19   13   13    5 |    15   25   19   19   26   17   22   16   17   17    14
  32  |    6   19    8   12   12    7   17    9    7   17    4 |    45   45   48   44   45   44   48   48   45   45    45
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |    9   19    9   12   15    6   20   11   12   28      |T   25   32   28   26   30   27   33   26   27   30    25
 WRMS |    8   19    8   12   14    5   18    9   11   19      |NE  21   29   24   22   27   24   30   23   24   27    22
 MEDI |    8   19    8   12   16    5   21    9   12   20      |MD  16   26   21   20   25   18   28   19   20   20    17

Table 3.1633.5   GPS week: 1633   Day: 5   MJD: 55680.000                            

        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
------+--------------------------------------------------------+---------------------------------------------------------
  X1  |    5  ---  ---  ---  ---  110  ---  ---  ---  ---    0 |    56  ---  ---  ---  ---   83  ---  ---  ---  ---    57
   2  |    7   18    9   17   16    4   24   14   13   16    5 |    77   81   77   81   76   75   78   77   76   87    76
   3  |    6   12    4    9   12    5    9    8   10   17    3 |    15   22   13   13   16   14   16   13   18   17    14
   4  |    7   14    8   14   12    4   14   10    8   25    4 |    12   24   14   15   22   12   18   13   14   28    14
   5  |    6   20   11   13   15    3   26   10    5   12    4 |    19   26   22   21   28   18   28   21   20   23    19
   6  |    4   10    5   11   13    4    9    9   10   13    3 |    19   26   19   20   22   20   20   18   24   16    19
   7E |    9   13   12   11   14    5   16   15    9   12    4 |    19   22   19   16   27   15   19   24   18   25    18
   8E |   10   19   10   12   19    4   14   12   10   23    4 |    28   40   33   29   45   29   39   26   28   28    30
   9E |   13   24   11   15   25    6   25   22   15   39    7 |    71   82   73   72   77   71   75   78   70   78    73
  10  |    8   14    8   17   11    6   13   11   11   16    4 |    13   23   19   20   18   13   22   19   17   16    15
  11  |    5   16    7   12   18    5   16    7   10   15    4 |    19   23   16   18   22   17   22   18   19   26    17
  12  |   13   22   12   16   17    5   26   13    8   23    5 |    19   30   21   22   24   17   30   20   20   18    17
  13  |    4   17   10   14   19    6   24   10    8   21    4 |    15   28   22   16   34   16   28   18   16   17    16
  14  |    7   24   11   18   16    5   27   13   10   20    5 |    19   32   26   30   31   23   30   24   24   16    22
  15  |    7   21   10   12   17    5   26   13   14   16    5 |    20   30   25   26   31   24   30   24   24   21    22
  16  |    8   19    6   14   13    4   23    7   13   24    4 |    14   28   17   17   24   15   26   15   19   16    15
  17  |    6   13    7   15    7    6   15   13   11   37    4 |    14   20   16   19   17   15   20   16   17   33    13
  18  |    9   22    8   13   14    5   26   11   18   21    5 |    16   36   26   21   31   22   33   20   24   21    21
  19  |    6   16    7   13   15    7   15   14   12   31    4 |    16   22   13   13   14   13   19   16   16   22    13
  20  |    7   22    9   16   17    6   21   15    9   11    4 |    14   27   20   16   26   16   22   20   21   17    16
  21  |    8   25    8   14   16    4   19   11   10   18    4 |    11   26   20   13   25   11   22   15   17   19    13
  22  |    8   21    9   12   17    5   24   11   14   12    4 |    18   36   25   20   33   22   32   21   21   18    22
  23  |    5   22    8   19   16    5   26    8    7   36    5 |    13   28   19   19   26   14   27   16   13   36    14
  24  |    7   19   10   13   13    5   13    8    8   22    4 |    13   24   20   13   16   10   18   14   13   20    14
 X25  |    8   19    9   16   11    7   25   12    9  ---    4 |    20   33   26   29   35   23   41   20   26  ---    23
  26  |    4   12    7   10   12    5   12   21   15   13    4 |    15   21   17   13   20   15   14   21   19   15    15
  27  |   13   19   10   13   20    5   18   13   19   17    5 |   129  133  131  133  129  130  122  134  132  130   131
  28  |    8   19    9   14   17    7   24   17   12   19    5 |    15   30   19   16   31   16   30   17   16   16    16
  29  |    9   15    8   15   13    5   20   11   10   42    5 |    13   18   21   16   15   14   18   15   17   30    15
  30  |    7   14    5   12    7    4   12    8   14   18    3 |    26   29   27   25   25   25   29   22   31   23    26
  31E |   11   27    7   16   13    4   26   17   12   17    5 |    21   31   22   20   25   19   25   21   24   21    19
  32  |    7   18    8   15   14    7   19    9    7   18    4 |    58   65   59   56   62   60   67   60   61   66    60
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |    8   19    9   14   15    5   20   13   12   22      |T   26   35   28   27   33   27   32   27   28   30    27
 WRMS |    7   19    8   13   14    5   18   11    9   21      |NE  21   30   23   22   27   23   28   22   23   25    22
 MEDI |    7   19    8   14   15    5   20   11   10   18      |MD  18   28   21   20   26   17   27   20   20   21    17

Table 3.1633.6   GPS week: 1633   Day: 6   MJD: 55681.000                            

        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
------+--------------------------------------------------------+---------------------------------------------------------
  X1  |    4  ---  ---  ---  ---  124  ---  ---  ---  ---    0 |    76  ---  ---  ---  ---   59  ---  ---  ---  ---    73
   2  |    9   26    6   13   21    5   27   11   12   17    5 |    75   78   73   72   75   73   77   71   82   78    74
   3  |    6   13    7    7   15    4   15    8    9   17    3 |    15   23   17   16   26   16   19   17   21   20    17
   4  |    7   17    7    7   15    5   15    9    9   24    3 |    13   28   16   15   15   14   22   14   16   27    14
   5  |    8   23    7    6   23    7   26   13    7   19    4 |    15   27   15   16   26   15   28   24   21   34    15
   6  |    5   12    7    8   15    4   15    9   10   13    3 |    26   31   29   29   36   29   31   30   30   28    28
   7E |    9   19   10   11   16    4   19   16    9   23    4 |    14   23   15   20   26   13   21   21   13   21    12
   8E |   10   16    6    9   13    4   17   13    9   21    4 |    37   42   41   42   42   40   48   35   41   35    38
   9E |   14   29    9    9   19    6   22   10   11   24    5 |    85   81   89   90   85   85   84   85   81   83    84
  10  |   11   15    7    9   16    5   13   12    9   12    4 |    15   24   17   18   19   15   24   20   22   17    15
  11  |    4   17    6    7   19    4   18    8   10   17    3 |    24   29   22   25   27   22   29   27   26   34    24
  12  |    8   31   10    8   19    6   25   16   11   23    5 |    16   36   20   19   24   16   31   19   21   20    16
  13  |    7   22   10   10   20    6   23    9    9   20    4 |    20   31   23   24   35   21   31   23   20   17    19
  14  |   12   21   10   12   15    6   27   11   11   20    5 |    21   31   30   30   35   28   28   27   30   19    24
  15  |    6   22    9   11   18    7   28   10   13   18    4 |    25   33   26   29   33   26   31   26   35   20    26
  16  |    6   21    7   11   16    6   25    9    8   21    4 |    14   31   18   17   27   17   31   17   16   16    16
  17  |   10   13    7   11   10    4   16   13   10   42    5 |    26   32   25   24   27   25   31   27   28   35    24
  18  |    9   25    9   13   20    4   30   13    9   20    5 |    17   34   23   18   31   17   39   19   19   26    18
  19  |    7   15    6    9   13    6   17   12   12   34    4 |    25   27   24   24   24   24   28   25   25   30    24
  20  |    8   20    7    8   15    5   21   15    9   13    4 |    16   29   20   18   23   18   28   25   20   27    18
  21  |    5   23    8   11   20    4   20   10    7   20    4 |    14   29   19   16   28   14   25   17   14   24    14
  22  |    7   21    9    8   19    3   31   15   12   12    5 |    15   27   17   16   32   16   35   19   23   21    16
  23  |    8   22    8   11   17    7   25   10    9   35    5 |    20   30   22   22   28   20   29   24   20   38    18
  24  |    5   16    6   10   13    5   11    8   10   23    3 |    16   28   19   17   16   17   23   23   22   26    18
 X25  |    6   20   12    8   16    6   26   13    9  ---    4 |    24   34   26   26   29   24   40   27   25  ---    24
  26  |    5   13    6    7   16    4   17   12    9   13    3 |    16   19   20   18   24   15   21   15   14   10    15
  27  |   10   22    9    9   19    5   19    8   10   28    4 |   146  145  148  143  152  146  147  144  137  157   146
  28  |    9   23   10    9   19    5   26   15    9   17    5 |    18   35   23   21   34   19   34   23   22   16    19
  29  |    7   16   11    9   17    5   17   12   12   42    5 |    20   26   26   25   23   22   27   22   25   33    21
  30  |    6   15    6   10   16    4   13    8    7   20    3 |    25   33   28   23   32   24   31   24   27   30    26
  31E |   10   23    8   12   15    5   20   17    9   15    4 |    17   29   23   24   30   20   30   28   20   19    20
  32  |    7   18    4    8   14    4   14   11   10   14    3 |    39   50   40   43   44   41   51   39   41   46    41
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |    8   20    8   10   17    5   21   12   10   23      |T   29   37   30   30   35   29   37   30   30   33    29
 WRMS |    8   20    8    9   16    5   19   10    8   23      |NE  23   32   24   23   29   23   31   24   25   27    24
 MEDI |    7   20    7    9   16    5   20   11    9   20      |MD  20   31   23   23   28   20   31   24   22   26    19



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 4.1633   GPS week: 1633   MJD: 55675.0-55681.0

CENT| CLK EPO  |        BRUS       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3031 |U   10     8    22 |U    7     7    23 |U    7     9    19 |
emr | emr 2967 |U    9     9    23 |U    7     6    26 |U    9    10    19 |
esa | esa 2976 |     8     8    19 |U    6     6    21 |     7     9    18 |
gfz | gfz 2964 |U    8     8    20 |U    6     8    21 |U    6     8    17 |
grg | grg 2975 |     9     8    21 |U    7     7    22 |     7     9    22 |
igr | igr 2955 |     8     7    19 |     6     6    22 |     6     8    18 |
igs | igs 2951 |     8     7    19 |     6     6    20 |     7     9    18 |
jpl | jpl 2949 |U    8     8    22 |U    6     9    29 |U    8     8    18 |
mit | mit 3003 |U    8     7    18 |U    7     8    24 |U    7     8    20 |



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 5.1633.0   GPS week: 1633   Day: 0   MJD: 55675.0

CENT| CLK EPO  |        BRUS       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3027 |     9    10    23 |     8    12    27 |     8     7    12 |
emr | emr 2964 |    11    13    28 |     8     5    27 |    10    11    19 |
esa | esa 2976 |     9    12    28 |     7     6    22 |     9    10    17 |
gfz | gfz 2964 |     9    12    27 |     7     8    23 |     7     9    16 |
grg | grg 2976 |    10    12    29 |     9     8    28 |     8    10    23 |
igr | igr 2945 |     8    12    29 |     7     7    22 |     7    10    16 |
igs | igs 2867 |     9    12    28 |     7     8    22 |    10    11    18 |
jpl | jpl 2955 |     9     9    29 |     7     8    31 |     8    10    18 |
mit | mit 2976 |     8    11    25 |     8    10    24 |     8    10    18 |

Table 5.1633.1   GPS week: 1633   Day: 1   MJD: 55676.0

CENT| CLK EPO  |        BRUS       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3025 |    16    14    42 |     8     6    28 |     7    10    20 |
emr | emr 2963 |     8     7    21 |     6     7    27 |    10     8    22 |
esa | esa 2976 |     6     5    14 |     7     7    24 |     6     9    22 |
gfz | gfz 2964 |     6     4    13 |     7     7    25 |     6     9    23 |
grg | grg 2976 |     7     6    19 |     8     6    24 |     7     9    24 |
igr | igr 2942 |     5     4    14 |     7     6    30 |     6     8    21 |
igs | igs 2971 |     5     5    14 |     6     7    24 |     7     8    21 |
jpl | jpl 2953 |     6     6    16 |     8     9    33 |     8     8    19 |
mit | mit 2976 |     6     6    14 |     8     7    29 |     5     8    21 |

Table 5.1633.2   GPS week: 1633   Day: 2   MJD: 55677.0

CENT| CLK EPO  |        BRUS       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3030 |     7     5    12 |  ----  ----  ---- |     6     6    17 |
emr | emr 2964 |     9     8    19 |  ----  ----  ---- |     7     5    15 |
esa | esa 2976 |     6     8    14 |  ----  ----  ---- |     5     5    18 |
gfz | gfz 2964 |     6     6    14 |  ----  ----  ---- |     5     5    16 |
grg | grg 2970 |     6     7    16 |  ----  ----  ---- |     6     4    23 |
igr | igr 2952 |     6     7    13 |  ----  ----  ---- |     5     5    18 |
igs | igs 2973 |     6     6    13 |  ----  ----  ---- |     5     5    16 |
jpl | jpl 2869 |     7     7    16 |  ----  ----  ---- |     7     5    17 |
mit | mit 3072 |     8     6    13 |  ----  ----  ---- |     7     7    21 |

Table 5.1633.3   GPS week: 1633   Day: 3   MJD: 55678.0

CENT| CLK EPO  |        BRUS       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3028 |    11     6    17 |  ----  ----  ---- |     9    15    21 |
emr | emr 2968 |     7     8    21 |  ----  ----  ---- |     9    13    19 |
esa | esa 2976 |     6     7    19 |  ----  ----  ---- |     7    14    21 |
gfz | gfz 2965 |     8     9    24 |  ----  ----  ---- |     7    15    16 |
grg | grg 2976 |     7     6    18 |  ----  ----  ---- |     7    17    22 |
igr | igr 2951 |     6     6    17 |  ----  ----  ---- |     8    13    20 |
igs | igs 2967 |     6     6    18 |  ----  ----  ---- |     7    13    18 |
jpl | jpl 2965 |     7     6    20 |  ----  ----  ---- |     8    10    20 |
mit | mit 3072 |     5     6    17 |  ----  ----  ---- |     8     9    20 |

Table 5.1633.4   GPS week: 1633   Day: 4   MJD: 55679.0

CENT| CLK EPO  |        BRUS       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3029 |    10     6    22 |     8     7    22 |     5     5    17 |
emr | emr 2970 |    11     7    23 |     8     8    29 |     7     7    17 |
esa | esa 2976 |    10     6    20 |     8     7    21 |     5     5    13 |
gfz | gfz 2964 |    10     5    21 |     7     9    20 |     4     4    15 |
grg | grg 2976 |    11     7    22 |     8     7    22 |     6     6    20 |
igr | igr 2954 |    10     6    21 |     7     8    23 |     5     4    13 |
igs | igs 2950 |    10     6    20 |     7     7    21 |     5     5    14 |
jpl | jpl 2962 |    11     6    19 |     8    12    30 |     6     6    15 |
mit | mit 2976 |     9     5    21 |     8     9    27 |     5     4    15 |

Table 5.1633.5   GPS week: 1633   Day: 5   MJD: 55680.0

CENT| CLK EPO  |        BRUS       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3039 |     9     8    25 |     6     5    20 |    10    14    31 |
emr | emr 2972 |    10    10    31 |     6     7    29 |    13    14    20 |
esa | esa 2976 |     9     7    26 |     6     6    19 |     8    12    24 |
gfz | gfz 2964 |     8     8    26 |     5     9    21 |     7    10    18 |
grg | grg 2976 |     9     8    29 |     6     7    18 |     9    10    21 |
igr | igr 2971 |     9     7    25 |     5     7    21 |     7    10    18 |
igs | igs 2975 |     9     7    25 |     5     6    20 |     9    10    21 |
jpl | jpl 2972 |     9     8    26 |     6     9    30 |    10     9    18 |
mit | mit 2976 |     9     8    24 |     7     8    22 |    11    14    26 |

Table 5.1633.6   GPS week: 1633   Day: 6   MJD: 55681.0

CENT| CLK EPO  |        BRUS       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3044 |     7     8    14 |     6     7    19 |     7     6    19 |
emr | emr 2972 |    10    10    22 |     6     5    19 |     9     8    19 |
esa | esa 2976 |     9     9    16 |     5     5    17 |     7     8    12 |
gfz | gfz 2968 |     9     9    17 |     5     5    17 |     7     7    17 |
grg | grg 2976 |    10    10    17 |     5     5    19 |     8     9    23 |
igr | igr 2972 |     9     9    17 |     5     5    15 |     7     8    18 |
igs | igs 2955 |     9     9    17 |     5     5    15 |     7    11    19 |
jpl | jpl 2971 |    10    11    25 |     4     7    19 |     9     9    18 |
mit | mit 2976 |     9     9    16 |     6     6    20 |     8     6    20 |


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 6.1633   GPS week: 1633   MJD: 55675.500-55681.500

                                                         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 |     -14     -31      43     -45      3 |      -1     14
            |      17      29      97     110      5 |       2
emr   uuuuu |      22      51      21      71     -7 |      58     61
            |      20      34     136     119      8 |       2
esa   uuuuu |      -3     -38      19     184     -3 |      12     20
            |      16      15      84      57      5 |       2
gfz   uuuuu |     -56      20     146    -101    -12 |      14     27
            |      22      13     122      45     24 |       8
grg   uuuux |       3     -42     124    -157      0 |       2     18
            |      52      47      73     177     29 |       2
igr   xxxxx |     -23      -4      78     -37     -5 |       5     16
            |      21      12      48      24      5 |       2
irf   xxxxx |      14       7       6     -74     -1 |       1     14
            |       9      13      84      41      3 |       1
jpl   uuuuu |      -6       2      13     126     -3 |      14     26
            |      39      24     143      62     10 |       3
mit   uuuuu |       9      19    -111    -240      1 |      10     18
            |      15      20     106      74      2 |       1
ngs   uuuuu |      36     -14     -57      71      5 |       6     14
            |      44      41     133     120      4 |       2
sio   xuuuu |     169      81    -273     -23    -16 |      42     46
            |      19      26     153     101      2 |       6


Table 7.1633.0   GPS week: 1633   Day: 0   MJD: 55675.500

                                                         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 |     -28      10      17     148     -7 |       2     13
emr   uuuuu |      50      42      77     282      6 |      59     61
esa   uuuuu |      -7     -33     -73     222      1 |      13     20
gfz   uuuuu |     -25      11      80     -95    -37 |      24     28
grg   uuuux |     -99      35     162    -372    -16 |       5     19
igr   xxxxx |     -11      -3     158     -76     -4 |       4     16
irf   xxxxx |       7      11     -50     -69     -2 |       1     14
jpl   uuuuu |      43      21    -196     201    -13 |      10     27
mit   uuuuu |      -6      19     -94    -294      2 |       9     18
ngs   uuuuu |      39     -48     145      11     11 |       3     14
sio   xuuuu |     152      84    -421      25    -18 |      49     50

Table 7.1633.1   GPS week: 1633   Day: 1   MJD: 55676.500

                                                         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 |      -9     -28      95      24      3 |      -1     13
emr   uuuuu |      31      17     105     145     -2 |      58     61
esa   uuuuu |      -8     -14       4     131      2 |      13     20
gfz   uuuuu |     -53      19      37    -114    -31 |      22     29
grg   uuuux |      -5     -70     200    -110    -10 |       3     20
igr   xxxxx |      12       9      97     -40     -5 |       6     15
irf   xxxxx |       9      19     -87     -71     -1 |       1     14
jpl   uuuuu |      26     -34     146     121      3 |      10     27
mit   uuuuu |      -8      36    -199    -266      6 |       9     18
ngs   uuuuu |      54     -24      43     135      4 |       4     14
sio   xuuuu |     169     100    -459     -41    -15 |      46     48

Table 7.1633.2   GPS week: 1633   Day: 2   MJD: 55677.500

                                                         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 |     -19     -40     106    -144      3 |       0     13
emr   uuuuu |      30      -2     216      87     -4 |      60     62
esa   uuuuu |      -3     -59     -38     254     -4 |      15     21
gfz   uuuuu |     -59      36      62     -62    -35 |      21     28
grg   uuuux |      -6     -77     211    -105     39 |       2     20
igr   xxxxx |     -31      12      63     -29      0 |       7     15
irf   xxxxx |      20      10     -73     -73     -3 |       3     13
jpl   uuuuu |     -45      -3     130     149      4 |      15     26
mit   uuuuu |      24      28    -261    -252      3 |      12     19
ngs   uuuuu |      42      19      18     -30      9 |       6     14
sio   xuuuu |     182      85    -344     -41    -14 |      46     48

Table 7.1633.3   GPS week: 1633   Day: 3   MJD: 55678.500

                                                         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 |     -22     -36     -43     -33      7 |      -2     15
emr   uuuuu |      -3      59     -36      31     -4 |      59     62
esa   uuuuu |      -1     -30     142     126    -11 |      13     21
gfz   uuuuu |     -43      32     189     -43    -16 |      15     30
grg   uuuux |      22     -59      55    -203     23 |       4     20
igr   xxxxx |     -44      -6      51     -44      0 |       6     16
irf   xxxxx |      19       9      -1    -110     -4 |       2     14
jpl   uuuuu |     -65     -14      25     114      6 |      17     24
mit   uuuuu |      17      30    -164    -305      1 |      12     18
ngs   uuuuu |      42     -32    -159     186      8 |       6     14
sio   xuuuu |     183      82    -303     -63    -19 |      44     47

Table 7.1633.4   GPS week: 1633   Day: 4   MJD: 55679.500

                                                         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 |      -2     -37      29    -120      4 |      -3     15
emr   uuuuu |       1      95    -215      56    -12 |      59     61
esa   uuuuu |      14     -54     131     129     -5 |      10     20
gfz   uuuuu |     -66      21     269     -88     -3 |      10     28
grg   uuuux |      36     -92     147    -209     -6 |       2     17
igr   xxxxx |     -52      -5      14       6     -5 |       4     16
irf   xxxxx |      13      -5      58       4     -1 |       0     15
jpl   uuuuu |       0      10     -25     190      6 |      16     24
mit   uuuuu |      15      16     -58     -81     -2 |      10     18
ngs   uuuuu |      -8      33    -236     -80      5 |       6     14
sio   xuuuu |     166      40    -216     176    -17 |      41     45

Table 7.1633.5   GPS week: 1633   Day: 5   MJD: 55680.500

                                                         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 |     -33      -4     193    -167      8 |      -2     15
emr   uuuuu |      38      74     -33     -16    -19 |      58     61
esa   uuuuu |      14     -42     -24     246      2 |      10     20
gfz   uuuuu |     -49      -3     343    -181     17 |       6     25
grg   uuuux |       1     -40      36    -285     16 |       2     17
igr   xxxxx |     -19     -23     114     -40     -9 |       4     16
irf   xxxxx |      27     -15     146    -127      3 |       1     15
jpl   uuuuu |     -16      39    -147      19    -19 |      17     25
mit   uuuuu |      27     -23      60    -252     -1 |      11     18
ngs   uuuuu |     -26      26    -142     244      4 |       8     15
sio   xuuuu |     193      57    -127    -142    -15 |      38     43

Table 7.1633.6   GPS week: 1633   Day: 6   MJD: 55681.500

                                                         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     -81     -94     -21      2 |      -3     15
emr   uuuuu |       6      70      35     -86    -12 |      54     59
esa   uuuuu |     -32     -37     -10     177     -8 |       9     21
gfz   uuuuu |     -96      25      43    -125     22 |       3     22
grg   uuuux |      69      11      58     184    -48 |      -1     16
igr   xxxxx |     -13     -14      50     -36    -15 |       1     18
irf   xxxxx |       1      19      46     -73      3 |      -1     16
jpl   uuuuu |      17      -2     156      91     -4 |      13     26
mit   uuuuu |      -4      28     -63    -232      0 |       9     19
ngs   uuuuu |     110     -72     -67      31     -2 |       7     15
sio   xuuuu |     140     120     -44     -73    -13 |      33     39



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