[IGSREPORT-20091] Wk 1649 IGS Final Orbits

Jim Ray igs.acc at noaa.gov
Thu Sep 1 06:10:54 PDT 2011


Author:  AC Coordinator / NOAA NGS

sum-file Version 2.0
Final IGS Orbit Combination - Week 1649   (Aug 14, 2011 - Aug 20, 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:

igs1649[0-6].sp3  IGS GPS ephemeris files in SP3 format.
igs1649[0-6].clk  IGS GPS satellite and station clocks in clock RINEX format.
igs1649[0-6].cls  IGS GPS clock combination summary report.
igs16497.erp      Earth Rotation Parameters (ERP) and their rates as well as
                  Universal Time (UT1-UTC) and Length Of Day (LOD) associated 
                  with IGS ephemerides.
igs16497.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   | 30 30
                0  |  COD   | NKLG
                0  |  ESA   | NRIL IRKJ PALM UNSA
                0  |  GFZ   | 3 6 19 29 MDVJ NKLG
                0  |  GRG   | IRKJ USN3
                0  |  JPL   | IRKJ
                0  |  MIT   | 3 6 27 3 6 27
                1  |  COD   | MCM4 BRMU MCM4
                1  |  ESA   | UNSA
                1  |  GFZ   | 6 19 29 KOSG MATE
                1  |  GRG   | BRMU USN3
                1  |  MIT   | 3 4 6 27 30 3 4 6 27 30 DAV1 BRMU
                2  |  COD   | 30 30
                2  |  EMR   | BAN2
                2  |  ESA   | CONZ IRKJ
                2  |  GFZ   | 6 19 29 BAN2 BRFT MDVJ PERT
                2  |  GRG   | IRKJ NKLG
                2  |  MIT   | 3 6 15 27 3 6 15 27 KHAJ KHAJ MAW1 TIDB
                3  |  COD   | NICO NICO NNOR WROC
                3  |  EMR   | 3 3
                3  |  ESA   | NNOR BAN2 DRAG IRKJ NNOR
                3  |  GFZ   | 6 19 29 DGAR KOSG MATE MDVJ
                3  |  GRG   | IRKJ
                3  |  JPL   | 3
                3  |  MIT   | 6 19 26 27 30 6 19 26 27 30 SYDN USNO WROC DAV1 USNO
                4  |  ALL   | 30
                4  |  COD   | NICO NICO
                4  |  ESA   | BAN2 IRKJ
                4  |  GFZ   | 6 29 KOSG KOUR
                4  |  GRG   | IRKJ
                4  |  MIT   | 7 8 26 27 28 6 7 8 26 27 28 DAV1 KOSG KOSG MDVJ TWTF
                5  |  ALL   | 30
                5  |  COD   | WROC WROC
                5  |  ESA   | IRKJ KOSG
                5  |  GFZ   | 6 9 29 CONZ MDVJ
                5  |  GRG   | IRKJ
                5  |  JPL   | 27
                5  |  MIT   | 1 6 22 27 1 6 22 26 27 CONZ KOSG
                6  |  EMR   | MATE MATE
                6  |  ESA   | 17 19 29 IRKJ
                6  |  GFZ   | 6 7 HOLM MDVJ OPMT QAQ1
                6  |  GRG   | IRKJ SANT
                6  |  MIT   | 1 7 19 27 1 6 27 CAS1

 5. 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 |    |    |    |    |    |    |
           PRN G03 |    |    |    |  1 |    |    |    |
           PRN G06 |  2 |    |    |    |    |    |    |

 6. 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.
    

 7. 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  |     .5     .4     .4     -13    -11     17    -.03
       EMR  |     .0    7.8   -2.9       4     -5      3     .32
       ESA  |    1.3     .5   16.1      29      4     65    -.08
       GFZ  |    -.2     .9     .3     -17     -5     -7    -.08
       GRG  |     .9    -.2    6.5     -17     -5      2    -.01
       JPL  |   -4.5     .4     .0     -19     11     60     .01
       MIT  |    1.9   -2.1   10.5     -15      6    -15     .0 
       NGS  |    2.0    1.5   11.4     -24     13     -3     .20
       SIO  |   -2.8    -.4  -10.9     -24    -48    -14    -.07


 8. 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.

 9. 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.

10. 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 1.1649.a). It also displays the computed satellite
position sigmas for the combined orbits (table 1.1649.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 2.1649.[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 3.1649.[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 5.1649.0-6).

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 1649 summary.                       (Aug 14, 2011 - Aug 20, 2011)

Table 1.1649.a   GPS week: 1649   MJD: 55787.000-55793.000

         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  248|    0     0     1     6    -3     8  -.28    7    7 |    -482       1     18     86
        |    0     0     0    11     8    15   .02           |     693    1199
emr   94|    0     3    -3   -14    21     1   .39   18   18 |    2316     -62     17    105
        |    1     1     1    10    20    11   .03           |    1376     961
esa  136|    0     0     2   -56    38    -3   .26    8    8 |     795   -1375     19    184
        |    0     0     2    13    14    11   .03           |     941    1258
gfz  190|   -1     0     0     7   -23    -9  -.19   11   11 |     283    -275     24    100
        |    0     0     1    51    43    12   .01           |     433     753
grg  128|    2     0     4     4    -8     7   .72   16   15 |     -35    -128     44    233
        |    1     0     1    18    21    48   .15           |     492     849
igr  n/a|    0     0     1   -11     7   -45  -.08    5    5 |    3643    -319     19     78
        |    0     0     0    13    14    12   .03           |    1809     942
jpl  113|    1     0    -7    16   -41    50   .58   14   13 |     370     -52     18    101
        |    1     0     2    11    17    27   .03           |    1287     958
mit  264|    0    -1     0    -3   -25   -23  -.31   11   10 |     -90    -269     22    184
        |    0     0     0    24    24    15   .01           |     460     725
ngs  222|    0     0     2    45   -14   -11  -.23    9    7 |    -522     123   1964   3648
        |    1     0     1    24    30    24   .05           |     758    1152
sio  243|   -2     0    -6    11   122   -30  -.25   20   19 |     ---     ---    ---    ---
        |    0     1     1    18    25     9   .02           |     ---     ---


Table 1.1649.b   GPS week : 1649   MJD: 55787.000-55793.000   

         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    0    0    0   15   14 |
   2  |    4    4    4    4    4    4    4 |
   3  |    4    4    4    6    5    4    4 |
   4  |    6    3    4    4    4    3    4 |
   5  |    4    4    4    4    4    4    4 |
   6  |    6    5    4    5    5    5    5 |
   7  |    4    4    5    4    4    4    5 |
   8  |    4    4    4    4    4    3    4 |
   9  |    4    5    4    4    4    4    4 |
  10  |    3    3    3    4    3    3    4 |
  11  |    4    4    4    4    4    4    4 |
  12  |    5    5    5    4    5    5    5 |
  13  |    4    4    4    4    4    4    4 |
  14  |    4    4    4    4    4    4    4 |
  15  |    5    4    5    5    4    4    4 |
  16  |    5    5    4    5    5    5    5 |
  17  |    4    4    4    4    4    4    4 |
  18  |    4    4    5    5    4    4    4 |
  19  |    4    4    4    4    4    4    4 |
  20  |    4    3    3    3    3    4    4 |
  21  |    5    4    4    4    4    4    5 |
  22  |    4    4    4    3    3    3    3 |
  23  |    5    4    4    4    5    4    4 |
  24  |    3    4    3    4    4    3    4 |
  25  |    4    4    4    5    4    4    4 |
  26  |    4    4    4    4    4    6    4 |
  27  |    6   10    7    8    6    5    5 |
  28  |    4    4    4    4    4    4    4 |
  29  |    4    4    5    4    5    4    4 |
  30  |    8   12   10    6    4    5    4 |
  31  |    4    4    4    4    4    4    4 |
  32  |    3    3    3    3    3    3    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 2.1649.0   GPS week: 1649   Day: 0   MJD: 55787.000                            

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  248|    0     0     2     5   -15    15  -.29    9    7 |    -427    -617     20    103
        |                     56    32                       |
emr   94|   -2     4    -6    -9     9    -5   .39   18   18 |    3929      42     17    101
        |                    -39   -19                       |
esa  136|    1     0     0   -70    32    12   .22    7    7 |    2082   -3023     19    181
        |                     35    15                       |
gfz  190|   -1     0     1   -23    58   -25  -.21   11   11 |     201     -45     25     97
        |                      5    46                       |
grg  128|    2     0     6    22   -21    13   .57   14   14 |     291    -573     37    236
        |                      0    26                       |
igr  n/a|    0     0     0    -5   -13   -56  -.08    5    5 |    6090    -599     20    138
        |                     -4    29                       |
jpl  113|    1     0    -5    37   -41    57   .52   13   13 |    1996    -448     19    107
        |                    -29     5                       |
mit  264|    1    -1     0    22    -2    -4  -.32   11   10 |      19    -505     22    174
        |                      7    -7                       |
ngs  222|    0     0     2    73   -77   -50  -.24   10    8 |    -491    -540   1684   3750
        |                    -56    22                       |
sio  243|   -3    -1    -5    29   143   -37  -.26   22   20 |     ---     ---    ---    ---
        |                    -36   -88                       |

Table 2.1649.1   GPS week: 1649   Day: 1   MJD: 55788.000                            

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  248|    0     0     1    -7     5   -20  -.30    7    6 |   -1668    1429     20     94
        |                     30   -11                       |
emr   94|    1     4    -3    -8    45     0   .35   18   18 |    3064     749     22    108
        |                    -37   -53                       |
esa  136|    0     0     2   -70    30     9   .26    7    7 |     494     190     20    181
        |                    -11     6                       |
gfz  190|   -1     0     0    75   -17     4  -.19   11   11 |    -506    1083     26     93
        |                     10    54                       |
grg  128|    4     0     3    -6    18    -7   .58   13   12 |    -866    1544     35    204
        |                     52   -22                       |
igr  n/a|    0     0     0    -1    -6   -39  -.09    4    4 |    4855     377     19     72
        |                    -23    29                       |
jpl  113|    0     0    -7    16    -9    64   .56   14   14 |     793     734     19     98
        |                    -38    -3                       |
mit  264|    0     0     0     0   -73   -44  -.30   11   10 |    -664     893     22    182
        |                     15     0                       |
ngs  222|    0     0     0    41   -13     2  -.19    9    7 |   -1908    1713   1954   3560
        |                      2    30                       |
sio  243|   -2     0    -7    13    78   -36  -.27   20   20 |     ---     ---    ---    ---
        |                    -37   -81                       |

Table 2.1649.2   GPS week: 1649   Day: 2   MJD: 55789.000                            

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  248|    0     0     0     2    -8    24  -.28    8    8 |    -882     609     19     94
        |                     -2    21                       |
emr   94|    2     4    -1   -18    43    22   .40   18   18 |    3859   -2067     16     87
        |                    -29   -48                       |
esa  136|    0     0     2   -66    26    -7   .25    7    7 |     -22    -773     19    185
        |                     56    -8                       |
gfz  190|   -2     0     0    48   -11     5  -.19   10    9 |     200     134     22    101
        |                    -18    59                       |
grg  128|    2     0     5    10     1    18   .59   15   14 |     411    -498     45    259
        |                     -1     0                       |
igr  n/a|    0     0     2   -11     7   -23  -.13    5    5 |    5359   -2227     20     60
        |                    -11    11                       |
jpl  113|    2     0    -8    21   -41     6   .57   13   13 |    1767   -2002     18     99
        |                    -40    -9                       |
mit  264|    1    -1     0    -9   -36   -33  -.31   10    9 |     219    -501     25    178
        |                      2    -7                       |
ngs  222|   -1     0     2    24    -4     3  -.32    9    7 |    -886     590   1922   3856
        |                    -14    46                       |
sio  243|   -2     0    -6     9   104   -25  -.26   18   18 |     ---     ---    ---    ---
        |                    -48   -76                       |

Table 2.1649.3   GPS week: 1649   Day: 3   MJD: 55790.000                            

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  248|    0     0     0    -5     6    15  -.27    7    6 |    -622    1249     17    111
        |                     35     8                       |
emr   94|    0     5    -2   -20    27    -5   .38   18   18 |    1382    -123     17    104
        |                    -33   -14                       |
esa  136|    0     0     0   -50    36   -13   .26    8    8 |     331   -2669     21    206
        |                     12     7                       |
gfz  190|   -1     1     0    37   -61   -14  -.21   10   11 |     345    -345     24    101
        |                    -22    60                       |
grg  128|    1     0     4   -30     8    67   .90   17   16 |    -327      97     50    228
        |                     53    -9                       |
igr  n/a|    1     0     1   -16    15   -53  -.08    5    5 |    2774    -528     19     80
        |                     10    40                       |
jpl  113|    3     0    -5    10   -29    82   .59   13   13 |    -486     -92     19    105
        |                    -33    30                       |
mit  264|    0    -2    -1    10   -27   -23  -.29   12   11 |    -445     230     19    162
        |                      6   -15                       |
ngs  222|    0     0     5    24    -5   -43  -.27    9    9 |    -641    1251   2071   3475
        |                     -9   -15                       |
sio  243|   -3     0    -6    14   111   -31  -.25   19   20 |     ---     ---    ---    ---
        |                    -33   -77                       |

Table 2.1649.4   GPS week: 1649   Day: 4   MJD: 55791.000                            

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  248|    0     0     1    24    -7    -1  -.29    7    7 |     300   -1721     17     66
        |                    -15    31                       |
emr   94|   -2     2    -2    -2    24     2   .37   17   17 |     805     801     18    103
        |                    -36   -15                       |
esa  136|    0     0     2   -47    34   -19   .30    8    8 |    1329    -696     20    177
        |                     21    -3                       |
gfz  190|   -2     0     0   -28   -48    -9  -.17   10   11 |     494   -1079     24    102
        |                    -19    49                       |
grg  128|    0    -2     5    23   -35   -31   .92   19   17 |    -357     209     63    254
        |                     26    51                       |
igr  n/a|    0     0     1     7    10   -38  -.04    4    4 |    1901     386     17     73
        |                    -14    39                       |
jpl  113|    2     1    -5    22   -53    77   .57   14   13 |    -950     566     18    100
        |                    -10    52                       |
mit  264|    1    -1     0   -39    -6    -7  -.29   10    9 |    -563      16     22    202
        |                     16    -8                       |
ngs  222|    1     0     1    61    12    -3  -.22    8    7 |     210   -1200   2121   3715
        |                    -36   -33                       |
sio  243|   -2     0    -5   -16   138   -14  -.23   19   19 |     ---     ---    ---    ---
        |                    -34   -69                       |

Table 2.1649.5   GPS week: 1649   Day: 5   MJD: 55792.000                            

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  248|    0     0     2    12     1    18  -.28    7    7 |    -421     195     20     67
        |                     52    17                       |
emr   94|   -1     1    -5   -33    10   -14   .42   19   19 |     689     272     13    106
        |                     -5    15                       |
esa  136|    0     0     4   -56    40    -7   .26    7    7 |    1767   -2285     19    168
        |                     22    29                       |
gfz  190|   -1     0    -2    16   -70    -2  -.19   11   12 |     302    -669     24     92
        |                    -11    32                       |
grg  128|    2     0     2    12     3   -68   .69   15   14 |     147    -950     40    232
        |                     30     0                       |
igr  n/a|    1     0     0   -28    30   -58  -.07    5    5 |    1355     397     20     66
        |                      4    29                       |
jpl  113|    0     1    -9     6   -57    34   .60   15   14 |   -1237     618     15     93
        |                     21    92                       |
mit  264|    0    -1     0    24   -17   -14  -.32   11   10 |     453   -1382     25    184
        |                      0   -12                       |
ngs  222|    0     0     1    19    12    11  -.18    8    7 |    -315     248   2242   3789
        |                    -10     6                       |
sio  243|   -1     0    -6    35   133   -42  -.27   20   18 |     ---     ---    ---    ---
        |                    -44   -77                       |

Table 2.1649.6   GPS week: 1649   Day: 6   MJD: 55793.000                            

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  248|    0     0     0    11    -9     9  -.25    7    7 |     343   -1131     18     67
        |                      9    17                       |
emr   94|   -1     4    -3    -5   -11     7   .42   19   19 |    2489    -114     16    130
        |                    -31    11                       |
esa  136|   -1     0     6   -35    71     0   .30   10   10 |    -415    -371     21    194
        |                     10    -4                       |
gfz  190|   -1     0     0   -71   -12   -22  -.18   10   11 |     947   -1009     26    120
        |                    -17    30                       |
grg  128|    1     0     4     4   -35    63   .76   18   18 |     453    -731     40    223
        |                     48    70                       |
igr  n/a|    1    -1     0   -25    10   -46  -.05    5    5 |    3172     -41     19     63
        |                     36    15                       |
jpl  113|    0     1   -10     3   -60    29   .62   15   14 |     710     260     18    110
        |                     -3    75                       |
mit  264|    1    -1    -1   -29   -12   -34  -.31   10    8 |     350    -634     23    207
        |                      9   -10                       |
ngs  222|    1     0     2    74   -25     1  -.18    8    7 |     376   -1197   1755   3394
        |                    -55    10                       |
sio  243|    0     2    -8    -7   148   -27  -.25   19   18 |     ---     ---    ---    ---
        |                    -49   -77                       |

       
       
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 3.1649.0   GPS week: 1649   Day: 0   MJD: 55787.000                            

        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  ---  ---  ---  ---  ---  ---  ---  ---  ---    0 |     1  ---  ---  ---  ---  ---  ---  ---  ---  ---     1
   2  |    5   21    7    8   16    5   14    7    8   20    3 |    24   39   28   24   39   25   36   25   25   27    27
   3E |    9   18    6   10   14    5   15   12   11   23    4 |    23   27   21   22   22   21   25   24   20   27    21
   4  |   27   17   10   10   11    6   13   10    9   13    5 |    43   35   31   29   39   31   38   31   32   30    33
   5  |    7   11    6    9   12    5   15   10   11   27    3 |    28   27   31   30   35   29   32   28   32   27    28
   6E |   14   17    6   12   13    7   19   23   14   45    6 |   139  142  141  139  143  138  145  139  137  148   140
   7  |    9   18    8   14   16    5   12    7    6   18    4 |    21   30   23   20   29   21   27   22   21   21    21
   8  |    7   14    7   11   13    4   10   10    8   17    3 |    16   23   17   16   16   15   24   14   15   17    15
   9  |    8   24    6   13    9    4   12   14   10   17    4 |    21   35   20   25   20   21   29   22   26   28    22
  10  |    4   11    4    8   14    4    8    7   11   22    3 |    28   31   33   31   39   30   33   32   32   26    30
  11  |    7   14    6   10   19    6    8   10    6   16    3 |    18   23   15   20   28   16   20   18   16   16    15
  12  |    9   22    7   17   16    6   17   18    9   25    5 |    19   30   19   23   23   18   25   22   19   20    18
  13  |    5   17    7    9   23    4   11   11   11   15    4 |    19   24   18   16   35   16   24   19   19   18    17
  14  |    7   16    7    9   17    4   14   10   11   15    4 |    15   27   20   19   27   16   23   20   23   17    17
  15  |    9   24    6    9   16    5   17   14   14   21    4 |    15   30   18   18   24   17   26   16   27   18    16
  16  |    8   21    7   16   16    7   15    9   10   23    4 |    20   28   18   14   23   17   25   18   20   17    17
  17E |    6   16    8    7   14    4   18    7    5   14    3 |    22   33   27   28   31   26   30   26   25   27    25
  18  |    5   17    7   15    8    6   12    8    9   27    4 |    24   28   25   28   28   24   28   27   26   23    24
  19E |    5   21    8    7   12    5   12   15   10   22    4 |    23   27   23   21   24   21   24   25   21   22    21
  20  |    5   15    6   12   12    4   11    7    7   25    3 |    26   25   28   32   30   26   25   25   28   20    25
  21  |    8   24    6   10   17    5   17   12   10   19    4 |    22   38   23   20   40   21   34   21   23   19    23
  22  |    7   16    6   12    6    4   11   13    9   21    3 |    28   33   32   32   35   29   32   34   33   29    30
  23  |    6   24    8   14   18    5   12   12   10   20    4 |    17   26   17   18   25   15   22   17   16   26    14
  24  |    4   14    5    8   12    4    9   11    6   20    3 |    21   22   20   24   22   21   19   23   21   22    19
  25  |    4   12    3   15   14    6   12   11   10   16    3 |    19   26   21   25   31   20   31   22   23   19    21
  26  |    8   15    6    8   13    7    8    9    9   28    3 |    21   30   26   24   28   23   29   27   26   34    24
 X27  |   12   26   11   13  ---   12   12   15  ---  ---    6 |    18   36   26   25  ---   24   28   28  ---  ---    23
  28  |    7   19    8    7   14    5   12    8    7   32    4 |    22   33   28   23   29   23   30   25   27   30    25
  29E |    8   20    8   13   15    6   16   10   10   12    4 |    17   26   18   22   23   19   22   23   22   23    19
 X30  |   12  ---   12  ---   20   11  ---   14  ---  ---    8 |    18  ---   24  ---   29   24  ---   19  ---  ---    19
  31  |    6   20    6   11   18    4   15    9   13   12    4 |    18   30   20   19   30   18   26   21   24   23    20
  32  |    5   11    5   12   10    7   10    8    8   13    3 |    18   20   17   24   24   16   19   20   17   15    17
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |    9   18    7   11   14    5   13   11   10   22      |T   24   32   26   27   32   25   31   26   27   27    24
 WRMS |    7   18    7   11   14    5   13   10    8   20      |NE  20   29   23   23   29   21   27   22   23   22    20
 MEDI |    7   17    7   10   14    5   12   10   10   20      |MD  21   28   23   23   28   21   26   23   23   23    21

Table 3.1649.1   GPS week: 1649   Day: 1   MJD: 55788.000                            

        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  ---  ---  ---  ---   21  ---  ---  ---  ---    0 |     1  ---  ---  ---  ---  ---  ---  ---  ---  ---     1
   2  |    4   19    8   15   14    4   13    9    8   23    4 |    32   42   40   41   50   34   43   31   37   32    36
   3E |    9   16    8   10   11    4   17   11   11   22    4 |    25   26   23   26   24   24   29   27   27   26    23
   4  |    5   13    7   10   10    3   14    8    8   13    3 |    33   39   41   39   40   38   41   32   38   37    36
   5  |    6   13    8    8   11    6   18    9    7   24    3 |    25   31   35   30   33   25   35   23   27   27    28
   6E |    9   17    6   10   13    5   17   15   10   23    4 |   142  145  143  138  147  140  149  137  138  140   141
   7  |    6   21    6   17   14    5   17    9    7   17    4 |    27   38   32   35   37   30   37   29   29   29    30
   8  |    7   14    5   12   13    3   11    9    8   16    3 |    24   30   28   29   26   25   32   24   24   27    25
   9  |   10   14   15    6    9    6   13   18    7   24    4 |    29   34   36   31   33   30   39   34   32   41    31
  10  |    4   12    6   10   10    4    9    8    7   19    3 |    28   33   34   34   33   30   34   30   31   26    31
  11  |    7   15    6   10   19    5   10    9    6   15    3 |    22   29   26   22   34   22   32   22   23   25    23
  12  |    7   22    7   15   14    5   18   13    9   20    4 |    23   34   26   28   31   23   29   26   27   27    24
  13  |    5   16    5    9   21    3   12   13   12   12    4 |    25   30   29   30   39   26   34   28   29   26    27
  14  |    7   19   12    8   17    3   12   10   10   14    4 |    21   29   30   22   32   22   28   22   25   21    22
  15  |    6   25    7    7   14    4   16   12    8   18    4 |    21   30   28   28   32   24   32   21   27   24    24
  16  |    9   24    7   13   15    6   16    9   10   23    4 |    25   35   28   23   29   25   33   24   29   23    25
  17E |    6   17    8   12   12    5   16    7    8   17    3 |    31   40   38   40   40   35   37   34   36   35    35
  18  |    7   20    7   11    9    5   14    9    9   27    4 |    26   34   27   30   31   26   36   28   28   29    27
  19E |    7   20    7   12   13    4   16   13    7   16    4 |    25   32   29   30   29   27   30   27   29   28    27
  20  |    5   12    5    9   11    4   11    7    5   25    3 |    25   28   30   31   27   27   30   24   29   22    26
  21  |    8   25    7    8   12    5   14    9    8   18    4 |    25   43   29   26   42   26   40   25   26   22    28
  22  |    7   16    6   10    9    3   11   14    8   22    3 |    29   34   32   27   33   28   37   30   27   31    29
  23  |    6   24    6    7   15    4   14   13   10   20    4 |    24   33   25   24   31   23   30   24   24   29    23
  24  |    5   16    6    7   12    4   12   10   10   21    3 |    22   27   26   24   27   24   27   23   26   26    23
  25  |    8   12    7   18   12    4   14    8   11   15    4 |    22   31   28   28   35   23   36   24   25   25    25
  26  |    6   19    7   10    8    5   11   10    9   29    4 |    33   44   42   40   41   37   43   37   40   48    38
 X27  |   16   16   21   17  ---   14   45   15  ---  ---   10 |    19   26   33   31  ---   26   52   24  ---  ---    24
  28  |    6   21    6   12   13    5   13    5    9   28    4 |    25   41   35   34   36   31   38   30   32   31    30
  29E |    8   19    9   13   17    4   16   11   10   15    4 |    20   28   25   28   26   22   26   27   28   25    23
 X30  |   18  ---   26  ---   26   27  ---    8  ---  ---   12 |    22  ---   41  ---   29   30  ---   24  ---  ---    25
  31  |    5   21   10   11   18    3   17   10    9   15    4 |    23   31   29   27   35   24   34   20   26   21    24
  32  |    5   11    7    9    9    6   10    7    7   12    2 |    22   26   24   24   25   22   27   23   24   22    23
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |    7   18    7   11   13    4   14   11    9   20      |T   28   36   34   33   36   30   38   30   32   31    29
 WRMS |    6   18    7   11   12    4   14   10    7   20      |NE  24   33   31   29   33   26   35   26   28   27    26
 MEDI |    6   17    7   10   13    4   14    9    8   19      |MD  25   32   29   29   33   26   34   26   28   27    25

Table 3.1649.2   GPS week: 1649   Day: 2   MJD: 55789.000                            

        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  ---  ---  ---  ---   75  ---  ---  ---  ---    0 |     1  ---  ---  ---  ---  ---  ---  ---  ---  ---     1
   2  |    4   20    8    9   13    4   17    9   11   19    4 |    28   38   34   31   38   30   38   27   30   28    30
   3E |   10   18    8    8   14    8   16   11   12   18    4 |    44   51   49   47   49   47   54   52   45   48    47
   4  |    7   13    8   10   11    4   11   10   11   10    3 |    24   30   29   27   33   27   33   27   26   28    26
   5  |    6   16    8   10   11    5   14    9    8   24    3 |    28   32   30   36   36   31   34   29   31   26    29
   6E |   11   16    6    8   14    3   16   13    9   15    4 |    90   97   91   89   92   90  100   92   86   89    91
   7  |   11   21    7   10   19    5   18   12   10   14    4 |    25   34   24   27   32   22   32   23   26   20    24
   8  |    8   17    7   12   10    3   10    8    9    9    3 |    22   29   23   24   23   20   23   20   19   20    20
   9  |   10   16    8    9   14    5   10   12    8   15    3 |    22   30   28   32   26   28   29   29   28   33    27
  10  |    4   11    8    8   11    3   11    8    5   17    3 |    28   33   32   32   36   30   32   30   29   23    29
  11  |    8   16    7    9   19    4    9    8    9   14    3 |    19   30   19   21   33   18   21   17   17   17    18
  12  |   13   20    8   15   18    5   15   13    9   21    4 |    25   33   25   31   25   24   29   24   22   24    23
  13  |    6   18    7    7   22    4   11   13    8   10    3 |    19   24   19   20   38   18   23   19   15   15    17
  14  |   13   17    5    8   17    3   15    8    9   13    4 |    22   33   27   24   36   23   31   25   22   25    24
  15  |    7   28    9    9   20    5   18   14    7   17    4 |    18   31   24   23   31   22   29   21   24   22    21
  16  |    8   22    6   11   13    5   16    9    9   22    4 |    23   34   21   21   29   19   27   20   21   23    21
  17E |    7   18   10    8   14    4   15    8    8   14    3 |    24   32   27   26   33   24   29   25   24   25    25
  18  |    7   17    6   16    8    6   13   16    6   27    4 |    23   32   27   35   27   26   29   22   29   21    24
  19E |    9   22    5    8   11    2   11   12    8   17    3 |    21   27   18   20   21   17   19   18   15   24    17
  20  |    6   12    5   10   10    5   11    7    8   21    3 |    21   27   26   28   28   24   24   22   25   24    23
  21  |    7   23    6    9   17    5   15    6    7   19    4 |    27   39   31   32   40   27   35   26   28   23    28
  22  |   10   14    3    9   11    2   12   10   11   20    3 |    25   35   30   31   33   29   33   30   32   30    29
  23  |    7   24    9    8   16    5   14   13    8   19    4 |    18   29   20   21   31   19   24   21   18   22    18
  24  |    6   13    8    6   10    4    9    7    9   18    3 |    21   28   24   21   23   21   21   21   19   22    21
  25  |    7   13    4   17   16    5   13    8   13   15    4 |    24   33   28   34   34   26   35   27   32   27    27
  26  |    7   17    5   11   11    6    9   11    8   28    4 |    32   34   30   33   35   30   34   34   28   41    30
 X27  |   15   20   11   14  ---   14  ---   14  ---  ---    7 |    19   31   27   32  ---   26  ---   33  ---  ---    24
  28  |    8   18    7    9   14    5   12    8    9   28    4 |    22   32   25   22   33   22   31   21   21   24    22
  29E |   10   20    9   14   22    3   16   12    8   11    4 |    21   32   26   31   25   24   27   23   24   26    23
 X30  |   13  ---    5  ---   41   15  ---   14  ---  ---   10 |    19  ---   30  ---   51   26  ---   21  ---  ---    26
  31  |   11   20    7    8   18    5   13    7   12   11    4 |    22   34   26   22   36   23   32   25   25   28    24
  32  |    7   11    4    8   10    5    9    9    6   12    2 |    19   23   20   20   26   18   21   21   18   18    19
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |    8   18    7   10   15    5   13   10    9   18      |T   24   34   28   29   34   26   32   27   26   27    25
 WRMS |    8   18    7    9   14    5   13    9    7   18      |NE  22   31   26   27   32   24   29   24   24   24    23
 MEDI |    7   17    7    9   14    5   13   10    9   17      |MD  22   32   27   27   33   24   29   24   25   24    24

Table 3.1649.3   GPS week: 1649   Day: 3   MJD: 55790.000                            

        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  ---  ---  ---  ---  102  ---  ---  ---  ---    0 |     1  ---  ---  ---  ---  ---  ---  ---  ---  ---     1
   2  |    7   21    9    9   17    4   16   11    7   20    4 |    31   41   36   34   43   33   40   31   31   33    33
   3E |   12   20    8    8   13    7   18   33   11   25    5 |   110  116  114  111  119  114  115  100  117  113   112
   4  |    6   12    8   10   14    5   11    9    9   11    3 |    27   33   36   33   39   31   32   30   35   32    31
   5  |    6   15   13    9   11    6   14   11   11   25    4 |    27   34   38   35   37   32   36   33   35   31    31
   6E |    9   21    5    7   10    3   17   15    9   28    4 |   132  136  132  134  134  132  136  130  130  129   131
   7  |    8   19   10   11   14    6   15   10   11   15    4 |    31   39   32   36   38   33   36   32   37   30    32
   8  |    7   14    7   11   18    4   10    9   11   12    3 |    26   32   27   29   31   28   30   28   32   26    27
   9  |    7   18    7    8   25    3   12   12    7   15    4 |    28   34   30   31   36   29   34   34   33   35    30
  10  |    6   11    7    9   14    5   10    9   10   18    3 |    31   34   37   33   39   34   35   34   36   28    33
  11  |    7   21    7    8   21    6    9    9    6   15    3 |    21   35   24   20   36   21   24   21   21   21    21
  12  |    7   22    9   10   17    8   14   11   12   19    4 |    26   35   26   29   27   25   29   28   30   29    26
  13  |    8   18    8   10   27    4   12   11    9   12    4 |    27   33   29   30   47   28   32   30   31   27    28
  14  |    5   14    7    8   21    4   13   11    7   16    3 |    21   31   27   24   40   24   30   24   28   26    25
  15  |    5   24    9   12   22    4   16   14    8   17    4 |    20   29   25   26   36   22   28   25   23   26    22
  16  |    7   23    8   13   13    5   16   10    9   23    4 |    22   33   24   23   27   22   29   23   25   25    22
  17E |    6   15    8    8   17    4   14    8    9   12    3 |    40   42   41   42   48   42   39   42   43   42    40
  18  |    6   20    6   12   10    4   14   18    9   26    4 |    28   35   31   34   33   29   35   33   33   31    29
  19E |    7   19    8   10   12    4   12   12    9   16    3 |    21   25   22   21   25   20   20   20   18   24    18
  20  |    5   12    7    7   13    5   11    7    7   21    3 |    26   29   28   31   29   29   27   28   29   25    27
  21  |    5   19   10    9   16    3   12    9    9   20    4 |    25   38   28   28   42   26   35   27   30   24    27
  22  |    6   16    5    8   11    3   12   11    7   20    3 |    28   37   33   32   39   34   39   34   35   33    32
  23  |    6   24    8    8   22    5   14   12    7   20    4 |    22   32   27   25   37   23   27   27   26   29    23
  24  |    4   16   10    8   14    7    9    9    8   19    3 |    20   25   24   21   23   21   21   22   21   22    20
  25  |    7   15    5   20   21    5   14    8    9   16    4 |    27   34   30   35   36   27   36   29   30   28    28
  26  |    6   16   10   11   15    5   12   10    8   27    4 |    40   45   46   44   46   42   47   47   45   52    43
 X27  |   15   19   13   26  ---    5   17   18  ---  ---    8 |    17   29   33   36  ---   25   28   32  ---  ---    25
  28  |    7   21   10    9   13    5   13    9    7   27    4 |    27   38   34   30   36   30   35   32   32   31    29
  29E |    8   18   10   14   17    4   13   11   10   15    4 |    23   32   27   32   28   26   26   24   29   28    24
 X30  |   10  ---    9  ---   22    4  ---   11   10   17    5 |    28  ---   32  ---   36   27  ---   28   18   12    28
  31  |    5   17    5    8   18    4   15    8   11   12    3 |    25   31   27   29   38   24   31   24   25   25    25
  32  |    6   11    7    4   12    4   10   11    5   11    2 |    22   22   23   23   25   23   23   24   21   20    21
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |    7   18    8   10   17    5   13   12    9   19      |T   31   39   36   36   41   34   37   34   35   34    32
 WRMS |    6   18    8   11   16    5   13   11    9   20      |NE  24   33   30   30   35   27   31   29   29   28    26
 MEDI |    6   18    8    9   15    4   13   11    9   17      |MD  26   34   30   31   36   28   32   29   30   28    27

Table 3.1649.4   GPS week: 1649   Day: 4   MJD: 55791.000                            

        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  ---  ---  ---  ---   66  ---  ---  ---  ---    0 |     1  ---  ---  ---  ---  ---  ---  ---  ---  ---     1
   2  |    8   20   10    8   18    5   17    9    6   21    4 |    20   32   24   22   44   20   33   17   19   20    21
   3  |   12   15    8   10   20    6   16   12    9   21    4 |    77   76   75   77   76   77   76   73   78   69    75
   4  |    7   13    9    8   17    3   13    9   10    9    3 |    25   33   32   27   44   27   34   23   25   26    27
   5  |    5   12    7    8   15    3   14    9    8   24    3 |    21   27   28   26   36   24   30   23   24   21    23
   6E |    7   16    6    9   18    4   18   10    7   32    4 |    89   91   94   87  100   88   97   88   90  100    90
   7  |    6   18    7    8   17    3   17    9    8   14    3 |    23   31   27   25   40   23   31   24   25   22    24
   8  |    6   11    9    9   24    3   10    9    8   12    3 |    18   23   20   22   33   17   24   17   18   17    18
   9  |   10   15    7   10   26    3   11   11    6   15    4 |    17   23   21   17   31   15   22   19   16   19    16
  10  |    5    9    7    5   15    3    9    7    9   19    3 |    32   35   37   33   40   31   35   33   33   25    32
  11  |    6   15    7   10   24    3    9   11    6   18    3 |    17   27   18   19   39   16   22   16   17   19    16
  12  |   10   21   10   12   14    6   16    9   10   17    4 |    20   30   21   25   28   19   26   22   22   21    20
  13  |    5   21    7    6   28    5   14    9    9   10    4 |    21   30   23   19   47   22   28   18   24   20    21
  14  |    5   16   10    8   26    3   15    9    7   14    4 |    18   26   27   20   44   17   24   18   16   19    19
  15  |    7   22    7    9   21    4   14   11   11   16    4 |    16   24   18   16   33   14   22   17   17   18    15
  16  |    9   22   10   15   16    5   18   10   10   25    5 |    23   36   28   23   35   22   32   20   24   23    23
  17E |    6   19    9    7   16    3   16   11    5   10    3 |    31   40   35   33   42   33   37   33   33   33    32
  18  |    6   15    8   15    9    4   14   12   10   26    4 |    20   27   25   25   31   20   28   24   23   21    21
  19E |    5   25    6   11   13    4   12   11    8   17    4 |    16   27   15   16   27   15   18   16   17   18    15
  20  |    7   11    5    8   13    3   10    8    4   20    3 |    23   26   25   24   31   23   25   20   24   18    23
  21  |    6   21    7    8   21    3   18   11    7   21    4 |    21   32   25   20   46   21   32   22   19   17    22
  22  |    5   13    9    8   10    2   11   10    7   19    3 |    27   33   32   27   39   25   32   26   27   27    28
  23  |    7   25    8    8   23    3   15   11    9   20    4 |    20   33   23   17   38   20   26   17   21   25    19
  24  |    5   11    8    9   15    4    9   10    8   19    3 |    19   20   20   17   25   18   19   19   20   18    17
  25  |    7   11    7   20   17    3   11    7   11   16    4 |    17   24   24   25   32   18   30   20   22   16    20
  26  |    9   18    8    8   16    3   12   10   10   27    4 |    31   38   35   30   42   31   36   38   32   41    33
 X27  |   12   19   15   11   24    8   16   13  ---  ---    6 |    17   24   26   18   22   23   22   26  ---  ---    17
  28  |    7   22   10   10   15    4   14    8    8   26    4 |    19   34   29   25   35   23   32   22   22   26    23
  29E |    7   21    8   13   23    4   17   11    8   17    4 |    25   32   28   29   34   24   29   25   25   26    25
 X30  |    9  ---    6    9   18    5  ---   10    8   14    4 |    17  ---   23   20   26   17  ---   19   18   14    19
  31  |    7   18    7   10   19    4   14    9   10   12    3 |    20   30   24   21   40   18   27   18   18   18    20
  32  |    7   11    5    8   13    3    9    8    5   11    2 |    20   22   22   20   30   19   23   22   20   21    20
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |    7   17    8   10   19    4   14   10    8   19      |T   24   32   29   26   39   25   31   25   26   25    24
 WRMS |    7   17    8   11   17    4   13    9    7   19      |NE  20   28   25   22   35   20   27   21   21   21    20
 MEDI |    7   16    8    9   17    3   14   10    8   17      |MD  20   30   25   23   36   21   28   22   22   21    21

Table 3.1649.5   GPS week: 1649   Day: 5   MJD: 55792.000                            

        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  |   19  ---   24  ---  ---   18  ---   17  ---  ---   14 |     1  ---   19  ---  ---  ---  ---   22  ---  ---     1
   2  |    6   23    9   10   15    4   15    8    5   23    4 |    18   28   24   21   32   21   27   17   20   24    19
   3  |    8   18    7    9   20    8   17    7   10   24    4 |    62   63   60   60   71   64   65   57   60   63    61
   4  |    6   16    7    7   11    5   12    9    8   11    3 |    24   27   31   26   31   26   29   21   24   25    24
   5  |    6   14    7   12   13    3   17   10    9   25    4 |    18   22   27   23   26   22   28   21   22   18    20
   6E |    9   20    7    9   19    5   22   10    9   34    5 |   130  133  133  133  136  133  136  132  132  139   132
   7  |    4   21    5    8   15    4   14    9    5   15    3 |    27   34   29   29   35   27   34   28   29   27    27
   8  |    7   14    8    8   11    4   11   10    9   11    3 |    20   27   23   23   24   20   25   22   25   22    21
   9  |    8   17    7    9   17    5   11   15   11   15    4 |    22   28   23   23   28   23   26   28   29   26    22
  10  |    6   12    7    9   13    5   11    8    7   20    3 |    30   32   35   30   34   31   31   30   27   28    30
  11  |    7   16    4   12   18    4   11    9    8   13    3 |    19   24   19   23   27   18   22   17   18   20    16
  12  |    9   22    7   14   13    6   14   10   11   22    4 |    18   29   16   20   26   18   25   17   24   19    17
  13  |    6   20    6    8   21    4   15    8    8   11    3 |    21   30   23   20   35   20   30   21   23   22    21
  14  |    5   19    8   10   18    3   15    9    8   12    3 |    16   28   23   22   31   18   26   17   19   19    18
  15  |    7   26    8   13   16    5   17   10    9   17    4 |    17   27   22   20   26   18   25   19   15   21    16
  16  |    9   23    7   18   14    7   17    9    6   29    4 |    19   34   23   24   25   22   29   20   19   26    19
  17E |    6   19    9    7   13    4   19    8   10   13    4 |    40   47   44   44   44   45   47   46   48   46    43
  18  |    5   15    8   12   10    4   14   14   11   27    4 |    20   24   23   23   21   19   24   23   23   18    19
  19E |    5   25    7   14   11    5   11   10    8   14    3 |    13   26   14   18   19   15   17   15   17   18    13
  20  |    6   12    7   11   11    3   13    9    5   21    3 |    23   24   27   26   23   22   23   20   23   17    22
  21  |    5   22    8    8   15    4   16   15    9   21    4 |    19   32   23   18   32   20   29   21   18   18    19
  22  |    5   15    6   10    9    4   11    6    9   19    3 |    22   29   25   24   26   21   29   21   25   20    22
  23  |    6   24    7    9   16    4   21   10    7   21    4 |    18   31   22   16   26   17   28   18   19   27    17
  24  |    4   11    6    8   12    6   11   11    8   18    3 |    18   19   18   17   17   17   17   19   18   15    16
  25  |   10   10    6   17   14    5   13    6    9   17    3 |    18   21   19   28   29   16   29   17   18   17    17
  26  |   11   17   10   11   17    6   14   31    9   36    6 |    55   60   59   56   52   55   60   65   54   60    55
 X27  |    6   18   13    9   17    9   11   17  ---  ---    5 |    14   21   22   22   16   19   18   23  ---  ---    15
  28  |    8   22    7   11   10    4   13    9    6   27    4 |    18   38   25   27   31   23   32   26   25   32    23
  29E |    8   21    7   14   17    4   15   11    8   13    4 |    21   27   16   23   27   19   22   22   20   21    18
 X30  |    8  ---    7   20   16    9  ---    9    7   17    4 |    22  ---   21   23   31   19  ---   19   12    8    21
  31  |    7   19   12   12   17    4   16    7   12   14    4 |    19   27   27   21   31   18   26   18   16   18    18
  32  |    5   11    6    9   12    4   12   10    6   12    3 |    18   20   20   22   21   18   18   19   17   17    18
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |    7   19    7   11   15    5   15   11    8   20      |T   25   33   29   29   33   27   32   27   27   28    25
 WRMS |    7   19    7   12   14    5   14   10    7   18      |NE  20   28   24   24   28   21   27   22   22   22    20
 MEDI |    6   18    7   10   15    4   14    9    8   17      |MD  19   28   23   23   28   20   27   21   22   21    19

Table 3.1649.6   GPS week: 1649   Day: 6   MJD: 55793.000                            

        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  |   20  ---   22  ---  ---   56  ---   16  ---  ---   14 |     1  ---   30  ---  ---  ---  ---   29  ---  ---     1
   2  |    6   28   10    6   17    4   17    6    8   23    4 |    21   36   24   22   34   21   34   18   20   28    22
   3  |    6   18    8    7   17    4   14    7    7   22    3 |    54   54   59   59   53   56   56   55   54   54    54
   4  |   13   12   17    7   13    4   11   10   10   12    4 |    21   27   32   23   34   23   28   22   25   20    22
   5  |    6   16   11    9   13    8   15    7   10   25    4 |    27   30   36   32   39   30   32   29   32   24    29
   6E |    9   20    9    8   22    6   20   12    8   14    4 |   147  146  141  139  149  140  147  143  141  143   144
   7  |    7   23   13   16   16    4   14    8    7   15    4 |    26   31   24   29   33   25   29   25   27   26    24
   8  |    6   14    9   13   15    5   10    8    8   11    3 |    22   24   19   28   25   21   22   20   19   21    20
   9  |    8   15    9    8   19    4   10   14    7   15    3 |    20   28   26   27   27   21   26   28   22   23    22
  10  |    5   14   11    8   17    4    9    4   14   20    3 |    34   32   37   35   40   32   34   33   31   32    33
  11  |    6   14    9    9   25    4   17   11    7   19    4 |    18   20   16   14   32   14   20   21   18   22    15
  12  |    8   22   10   12   17    7   14    8    9   24    4 |    21   31   23   27   25   19   26   21   22   23    20
  13  |    5   20    9    9   25    5   11    8    8   12    3 |    21   26   20   20   38   19   27   21   18   20    19
  14  |    4   15   16   10   19    4   16   11    9   13    4 |    19   31   27   25   35   20   30   19   20   24    21
  15  |    7   24   12   12   20    6   17    8    6   16    4 |    16   28   24   24   31   18   27   21   20   24    19
  16  |    9   23   13   14   15    5   14    8   10   29    4 |    20   30   22   18   27   17   27   16   19   23    17
  17E |    8   22    7    6   16    6   19    9    8   10    4 |    32   34   28   28   33   31   32   27   29   31    28
  18  |    5   18    9    9   11    6   14   15    7   27    4 |    25   30   34   35   32   28   31   30   29   26    28
  19E |    7   28    8   10   16    3   12    9    5   17    4 |    13   28   14   12   20   10   17    9   11   18     9
  20  |    6   12    9   15   14    3   14   10    6   21    4 |    26   24   27   32   31   25   24   26   24   18    25
  21  |    5   24    7    8   27    5   15   17    8   21    4 |    25   37   27   24   41   24   33   23   28   25    25
  22  |    5   14    6    8   11    6   14    5    9   18    3 |    29   36   35   36   39   34   36   34   32   32    32
  23  |    5   24    9    9   19    6   16    9    6   21    4 |    17   31   21   17   30   17   28   22   17   24    17
  24  |    4   11    9    8   16    8   17   12    6   18    3 |    23   20   21   20   27   20   21   26   23   18    20
  25  |    7   12    6    7   17    5   15    6    7   20    3 |    23   28   26   25   31   21   32   24   25   17    23
  26  |    6   14    9    7   16    5   10   10    7   27    3 |    27   30   31   29   34   26   31   29   26   35    27
 X27  |    8   16   14   10   21    9   11   16  ---  ---    5 |    13   26   25   20   23   20   24   23  ---  ---    17
  28  |    8   21    9   10   16    7   15    8    5   29    4 |    19   31   22   23   35   20   29   20   21   29    20
  29E |    7   17    8   16   15    6   13   13    7   18    4 |    34   35   34   35   35   30   32   33   34   37    33
 X30  |    8  ---    8    8   15    3  ---    5    8   19    3 |    22  ---   24   15   25   20  ---   24   15    8    22
  31  |    7   22    8   11   17    6   14   13   12   13    4 |    20   29   22   21   34   17   27   16   17   19    18
  32  |    7   11   10   13   16    4   16    9    8   12    3 |    18   16   18   20   24   16   19   19   15   16    16
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |    7   19   10   10   18    5   15   10    8   19      |T   26   33   30   29   36   26   32   28   27   28    26
 WRMS |    7   19   10   11   18    5   14    8    7   18      |NE  21   28   25   24   31   21   27   23   22   23    21
 MEDI |    7   17    9    9   16    5   14    9    8   18      |MD  21   30   25   25   33   21   28   23   22   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 4.1649   GPS week: 1649   MJD: 55787.0-55793.0

CENT| CLK EPO  |        BRUS       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3008 |U   14    10    32 |U    5     6    26 |U   12    10    19 |
emr | emr 2874 |U   16    13    39 |U    6     8    25 |    12     9    20 |
esa | esa 3003 |    14    13    36 |U    5     5    25 |    14    12    23 |
gfz | gfz 2914 |U   15    14    38 |U    6     7    34 |U   14    12    27 |
grg | grg 2921 |    14    13    36 |U    5     7    27 |    15    12    21 |
igr | igr 2917 |    15    13    38 |     5     5    24 |    11    10    19 |
igs | igs 2928 |    14    12    35 |     4     6    24 |    11    10    18 |
jpl | jpl 2857 |U   15    10    36 |U    5     7    26 |    11    10    22 |
mit | mit 3003 |U   94    29   242 |U    7    10    44 |U   18    14    22 |



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 5.1649.0   GPS week: 1649   Day: 0   MJD: 55787.0

CENT| CLK EPO  |        BRUS       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 2971 |    13    12    35 |     6     6    26 |    12    17    25 |
emr | emr 2872 |    15    10    41 |     8     8    30 |    16    13    23 |
esa | esa 2976 |    13    11    36 |     5     5    29 |    12    16    27 |
gfz | gfz 2873 |    13    11    38 |    13    12    76 |    15    17    34 |
grg | grg 2880 |    12    10    34 |     6     6    29 |    13    16    27 |
igr | igr 2880 |    14     9    39 |     5     5    26 |    11    14    24 |
igs | igs 2873 |    13     9    40 |     5     6    27 |    12    15    25 |
jpl | jpl 2867 |    14     9    46 |     5     6    30 |    12    16    30 |
mit | mit 2976 |    12    10    34 |     6     5    30 |    12    15    27 |

Table 5.1649.1   GPS week: 1649   Day: 1   MJD: 55788.0

CENT| CLK EPO  |        BRUS       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 2974 |    14    10    30 |     5     8    26 |    12    11    22 |
emr | emr 2872 |    21    11    48 |     7     9    20 |     8    10    18 |
esa | esa 2976 |    14     9    28 |     5     6    20 |    10    10    21 |
gfz | gfz 2873 |    14    11    33 |     5     8    27 |    14     9    21 |
grg | grg 2880 |    14     9    26 |     5     8    23 |    10    13    22 |
igr | igr 2879 |    16    11    37 |     5     6    18 |     9    12    21 |
igs | igs 2936 |    14     9    28 |     5     7    19 |    10    10    18 |
jpl | jpl 2870 |    19    11    47 |     5     8    23 |     7     9    20 |
mit | mit 2976 |    14     9    26 |     6     9    24 |    11    10    20 |

Table 5.1649.2   GPS week: 1649   Day: 2   MJD: 55789.0

CENT| CLK EPO  |        BRUS       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3046 |    12     7    23 |     6     7    27 |    11    10    17 |
emr | emr 2871 |    14    10    26 |     6    10    31 |     9     5    17 |
esa | esa 2976 |    14    10    30 |     5     7    27 |     9     9    16 |
gfz | gfz 2872 |    13    11    34 |     5     5    33 |     9     9    16 |
grg | grg 2880 |    13    11    29 |     4     7    29 |    12    10    18 |
igr | igr 2879 |    13    10    31 |     5     6    28 |    13    12    17 |
igs | igs 2937 |    13     9    28 |     5     6    27 |     9     8    15 |
jpl | jpl 2776 |    14     8    28 |     5     8    30 |    10     8    20 |
mit | mit 2976 |    13     9    29 |     7     9    42 |     9     8    18 |

Table 5.1649.3   GPS week: 1649   Day: 3   MJD: 55790.0

CENT| CLK EPO  |        BRUS       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 2974 |    11     6    23 |     6     7    27 |    12     9    18 |
emr | emr 2875 |    13     8    32 |     5     8    29 |    12     8    19 |
esa | esa 2976 |    11     7    26 |     5     6    28 |    11     9    17 |
gfz | gfz 2871 |    11     7    28 |     6     6    29 |    12     8    17 |
grg | grg 2880 |    11     8    28 |     5     8    29 |    13     8    17 |
igr | igr 2880 |    11     7    26 |     5     5    25 |    12     9    17 |
igs | igs 2975 |    11     6    25 |     5     7    28 |    13     9    18 |
jpl | jpl 2872 |    12     7    26 |     5     7    28 |    10     7    19 |
mit | mit 2976 |    10     7    31 |     6     8    37 |    14    12    18 |

Table 5.1649.4   GPS week: 1649   Day: 4   MJD: 55791.0

CENT| CLK EPO  |        BRUS       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 2971 |    21    15    50 |     5     7    30 |    10     9    15 |
emr | emr 2876 |    16    14    44 |     5     7    20 |    11     9    20 |
esa | esa 2976 |    16    13    42 |     4     6    24 |     9     9    17 |
gfz | gfz 2968 |    18    16    37 |     4     5    24 |    16    11    43 |
grg | grg 2976 |    16    14    45 |     4     5    30 |     9     8    18 |
igr | igr 2904 |    18    14    45 |     4     5    23 |     9     9    17 |
igs | igs 2872 |    15    14    40 |     4     6    24 |     9     9    16 |
jpl | jpl 2870 |    15    15    41 |     5     6    24 |    10     9    20 |
mit | mit 2976 |    15    14    42 |     5     6    25 |     9    10    18 |

Table 5.1649.5   GPS week: 1649   Day: 5   MJD: 55792.0

CENT| CLK EPO  |        BRUS       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3062 |    11     9    31 |     5     5    17 |     8     9    15 |
emr | emr 2876 |    13     9    26 |     5     7    19 |     9     8    21 |
esa | esa 3072 |    13    10    34 |     4     5    19 |     8     9    15 |
gfz | gfz 2972 |    13    10    39 |     4     5    22 |     8     8    16 |
grg | grg 2976 |    12    11    35 |     5     5    25 |     8    10    17 |
igr | igr 2981 |    13     9    34 |     5     5    19 |     9     9    16 |
igs | igs 2938 |    11     9    31 |     3     4    18 |     9     9    16 |
jpl | jpl 2874 |    13     8    29 |     4     6    21 |     9     9    21 |
mit | mit 3072 |    18    14    36 |    15    31   122 |     8     8    21 |

Table 5.1649.6   GPS week: 1649   Day: 6   MJD: 55793.0

CENT| CLK EPO  |        BRUS       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3063 |    14     9    29 |     5     5    27 |    19     8    20 |
emr | emr 2878 |    21    28    56 |     5     7    28 |    16    11    24 |
esa | esa 3072 |    21    29    57 |     4     4    26 |    40    22    45 |
gfz | gfz 2973 |    21    30    58 |     5     7    29 |    27    20    42 |
grg | grg 2976 |    20    28    57 |     4     8    26 |    38    19    30 |
igr | igr 3016 |    21    30    57 |     5     5    26 |    16     8    20 |
igs | igs 2965 |    21    30    55 |     4     5    27 |    16     7    19 |
jpl | jpl 2872 |    16    11    37 |     5     7    28 |    17    10    26 |
mit | mit 3072 |   578   144  1495 |     5     6    32 |    64    36    35 |


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 6.1649   GPS week: 1649   MJD: 55787.500-55793.500

                                                         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      -1     -80     -5 |       4     29
            |      14      26      70     101      7 |       4
emr   uuuuu |      25      25     159      68      5 |      40     51
            |      22       9      87      55      7 |       6
esa   uuuuu |       2     -25      72      81     -5 |      10     32
            |      11      21      47     105      5 |       4
gfz   uuuuu |     -40       6     -21     -78      1 |       2     30
            |      17      13      65      94      5 |       5
grg   uuuux |      -9     -34     -53    -181     14 |      74    111
            |      32      25      82      67    111 |      20
igr   xxxxx |     -20      -4     -10      -6     -1 |      -1     27
            |      14      23      44      53      6 |       5
irf   xxxxx |       8      -5     -31      -5     -3 |       0     27
            |       5       5      32      58      3 |       4
jpl   uuuuu |     -27      14      20     -85     15 |      30     41
            |      36      23      58      73      8 |       6
mit   uuuuu |      16     -13    -166     -33      0 |      11     30
            |       8      10      71      75      4 |       5
ngs   uuuuu |      -2      21      45      83     -1 |       3     24
            |      27      20      78      77      9 |       4
sio   uuuuu |      85      35     -80      85    -14 |      39     48
            |       9       9      94     129      3 |       3


Table 7.1649.0   GPS week: 1649   Day: 0   MJD: 55787.500

                                                         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     -62    -113      99    -13 |       9     27
emr   uuuuu |      28      33     133      19      4 |      42     52
esa   uuuuu |      -6     -41      47     -31     -6 |      14     33
gfz   uuuuu |     -37     -11      86      78      6 |       4     30
grg   uuuux |     -17      -6    -214    -234    -79 |      75    100
igr   xxxxx |     -20      -2      15     -29     -7 |       5     25
irf   xxxxx |       9      -6      -3     120     -4 |       3     26
jpl   uuuuu |       4      23     -42     -56     -1 |      29     39
mit   uuuuu |      16     -13     -73      99     -5 |      15     30
ngs   uuuuu |     -13      50      59     -46      5 |       8     24
sio   uuuuu |      97      30    -144     319    -15 |      43     49

Table 7.1649.1   GPS week: 1649   Day: 1   MJD: 55788.500

                                                         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     -32     -38    -105    -11 |       7     28
emr   uuuuu |      56      35     121      87      2 |      40     51
esa   uuuuu |      -3       9      47      91     -5 |      12     33
gfz   uuuuu |     -51     -12      11    -129     -2 |       3     30
grg   uuuux |      25     -54      32    -105    -27 |      66     98
igr   xxxxx |     -26      21      -3      40     -8 |       2     26
irf   xxxxx |       3      -2     -15      -2     -2 |       2     27
jpl   uuuuu |       6      36      77    -131     11 |      28     39
mit   uuuuu |       3     -17     -85     -15      1 |      12     31
ngs   uuuuu |     -27      -4     -66      45      2 |       6     24
sio   uuuuu |      84      35    -123     142    -14 |      43     49

Table 7.1649.2   GPS week: 1649   Day: 2   MJD: 55789.500

                                                         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 |     -16       1     -34      19     -3 |      -1     31
emr   uuuuu |      53      28     254     175     21 |      32     46
esa   uuuuu |      13     -57     134      14      1 |       3     32
gfz   uuuuu |     -54      17      -6    -110      8 |      -5     31
grg   uuuux |       5       0       6    -224    -33 |      52     90
igr   xxxxx |      -6      10      16      81      0 |      -7     29
irf   xxxxx |       5      -1     -63      -8      3 |      -6     29
jpl   uuuuu |      14      39      45     -14     13 |      23     36
mit   uuuuu |      12      -3    -225     -44      7 |       4     29
ngs   uuuuu |     -41      13     -47     126    -19 |      -1     25
sio   uuuuu |      81      47    -187      95    -11 |      36     47

Table 7.1649.3   GPS week: 1649   Day: 3   MJD: 55790.500

                                                         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 |      -4     -41      74    -141     -4 |      -2     30
emr   uuuuu |      18      27     220      68      0 |      34     48
esa   uuuuu |      -3     -18      -3      23     -3 |       3     32
gfz   uuuuu |     -56      16      -2    -105      5 |      -4     32
grg   uuuux |      13     -59      -9     -95    134 |      53     90
igr   xxxxx |     -36     -16      43       7      7 |      -8     29
irf   xxxxx |       4      -6     -83     -32     -5 |      -6     29
jpl   uuuuu |     -26      27      19     -21     22 |      23     36
mit   uuuuu |      19     -12    -273     -40     -3 |       4     30
ngs   uuuuu |      19       3     157     105     -4 |      -3     25
sio   uuuuu |      81      27    -146      52    -17 |      36     47

Table 7.1649.4   GPS week: 1649   Day: 4   MJD: 55791.500

                                                         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       8      42    -104     -9 |       4     29
emr   uuuuu |      18      29      -4      47      3 |      42     52
esa   uuuuu |       6     -28      70     143     -5 |      10     32
gfz   uuuuu |     -46      12     -37    -218      1 |       4     29
grg   uuuux |     -48     -33     -86    -207    205 |      74    113
igr   xxxxx |     -36       7     -16     -62      5 |      -1     28
irf   xxxxx |       3      -7     -32     -19     -5 |       1     27
jpl   uuuuu |     -49       3     100    -224     16 |      31     44
mit   uuuuu |      11     -23    -169       4      0 |      11     30
ngs   uuuuu |      36      29      89     178      1 |       3     23
sio   uuuuu |      72      27     -43      61    -19 |      40     49

Table 7.1649.5   GPS week: 1649   Day: 5   MJD: 55792.500

                                                         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     -49     -16    -158     -2 |       5     29
emr   uuuuu |       1       8     165      69     -1 |      46     54
esa   uuuuu |     -13     -19      97      41    -13 |      13     31
gfz   uuuuu |     -16      14     -99     -54     -6 |       7     28
grg   uuuux |      16     -27     -60    -137    -82 |     102    144
igr   xxxxx |     -13      -1     -96     -19     -6 |       1     27
irf   xxxxx |      16       3     -30     -34     -5 |       3     26
jpl   uuuuu |     -76     -18      -6     -85     18 |      36     46
mit   uuuuu |      28       3    -181    -111      1 |      14     30
ngs   uuuuu |      10      13      51     142     10 |       5     23
sio   uuuuu |      93      47      62      37    -14 |      39     49

Table 7.1649.6   GPS week: 1649   Day: 6   MJD: 55793.500

                                                         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 |      -4     -22      81    -170      6 |       4     29
emr   uuuuu |       2      18     223       8      6 |      47     54
esa   uuuuu |      17     -23     114     282     -1 |      11     30
gfz   uuuuu |     -17       4     -97     -10     -2 |       7     28
grg   uuuux |     -57     -61     -40    -264    -23 |      99    143
igr   xxxxx |      -2     -49     -26     -63      5 |       1     27
irf   xxxxx |      13     -13       6     -58     -2 |       2     26
jpl   uuuuu |     -62     -10     -54     -63     25 |      39     49
mit   uuuuu |      23     -22    -155    -124     -1 |      14     30
ngs   uuuuu |       3      42      70      31     -1 |       6     24
sio   uuuuu |      90      36      18    -110    -10 |      35     45



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