[IGSREPORT-20048] Wk 1647 IGS Final Orbits

Jim Ray igs.acc at noaa.gov
Thu Aug 18 07:17:24 PDT 2011


Author:  AC Coordinator / NOAA NGS

sum-file Version 2.0
Final IGS Orbit Combination - Week 1647   (Jul 31, 2011 - Aug 06, 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:

igs1647[0-6].sp3  IGS GPS ephemeris files in SP3 format.
igs1647[0-6].clk  IGS GPS satellite and station clocks in clock RINEX format.
igs1647[0-6].cls  IGS GPS clock combination summary report.
igs16477.erp      Earth Rotation Parameters (ERP) and their rates as well as
                  Universal Time (UT1-UTC) and Length Of Day (LOD) associated 
                  with IGS ephemerides.
igs16477.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  |  ESA   | 30
                0  |  GFZ   | MDVJ
                0  |  GRG   | OHI3 SANT
                0  |  JPL   | 25
                0  |  MIT   | 1 6 11 26 30 1 3 6 11 26 30 CAS1 CAS1
                1  |  COD   | CHUR
                1  |  ESA   | REUN
                1  |  GFZ   | SALU
                1  |  JPL   | 25 26
                1  |  MIT   | 30 26 30
                2  |  EMR   | 3 6 3 6 KHAJ KHAJ
                2  |  ESA   | NKLG
                2  |  GFZ   | MDVJ
                2  |  JPL   | 3 6 25 26 ASPA MDO1
                2  |  MIT   | 3 19 30 3 19 30 BRUS NTUS
                3  |  EMR   | 6 6
                3  |  ESA   | IRKJ
                3  |  GFZ   | 7 RAMO
                3  |  GRG   | IRKJ
                3  |  JPL   | 25 26 IRKJ
                3  |  MIT   | 1 6 30 1 6 19 30
                4  |  COD   | DAV1
                4  |  EMR   | 3 6 3 6
                4  |  ESA   | IRKJ
                4  |  GFZ   | 3 7 MDVJ RAMO
                4  |  GRG   | IRKJ NKLG
                4  |  JPL   | 3 25 IRKJ
                4  |  MIT   | 1 3 6 9 22 1 3 6 9 22 DAV1 DAV1
                5  |  EMR   | 3 6 3 6
                5  |  ESA   | DRAG UNSA
                5  |  GFZ   | 3 7 HARB MDVJ OPMT
                5  |  JPL   | 18 25 RAMO
                5  |  MIT   | 1 3 6 17 21 1 3 6 21 DAV1
                6  |  COD   | WROC
                6  |  EMR   | 3 6 3 6 WHIT MATE WHIT
                6  |  ESA   | CHUR CHUR HOFN MAW1 UNSA
                6  |  GFZ   | 3 6 7 MDVJ NYAL YELL
                6  |  JPL   | 3 25
                6  |  MIT   | 1 3 5 6 9 13 19 21 26 3 5 6 9 13 19 21 26 KOSG MDVJ
                6  |  MIT   | MIZU YELL BOR1 HARB HNPT KOSG

 5. The following table lists all maneuvered satellites for this week.
    The solutions from COD and ESA, which modeled the maneuver, are used
    that day for combination. An associated accuracy code of 0 (unknown) 
    is given if only one AC is left (no redundancy). For the long arc  
    evaluation the arc is split into two parts at the given maneuver epoch.
    
               PRN |    Date    | Ref. NANU
               ----+------------+----------
               G24 | 2011_08_03 | 2011054 

 6. The following orbit solutions were excluded from the combination because 
    they were biasing the weighted average (generally indicated by long arc RMS).
    They were still used for statistics computation.
    
               Day | Centre | PRN list
               ----+--------+---------------
                3  |  GRG   |   3

 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  |     .5     .4     .0     -14     -6     20     .10
       EMR  |   -2.2   -2.3    2.1      11      1      2     .37
       ESA  |   -1.2   -7.1   17.4     -44     40     90     .14
       GFZ  |   -1.2     .2    -.4     -20      5      6     .05
       GRG  |    2.9    -.3    9.6      -5     -5     13     .02
       JPL  |     .3    2.3  -11.2      36     37    105   -1.17
       MIT  |    2.5   -9.4   27.9      -9     -4     -8    -.01
       NGS  |    2.2    -.6   13.7     -47      5     10    -.01
       SIO  |     .5   -7.1    2.9    -134    -17     30    -.03


 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 1.1647.a). It also displays the computed satellite
position sigmas for the combined orbits (table 1.1647.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 2.1647.[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 3.1647.[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 5.1647.0-6).

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 1647 summary.                       (Jul 31, 2011 - Aug 06, 2011)

Table 1.1647.a   GPS week: 1647   MJD: 55773.000-55779.000

         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  250|    0     0    -3   -19    -4     5  -.26    8    7 |    -282    -114     19     88
        |    0     0     1     8     8    20   .01           |     646     716
emr   91|   -1    -1    -6   -62    27   -11   .34   18   18 |    1353    -687     21    126
        |    1     1     1    43    23    10   .03           |    1434     935
esa  137|    0     0     2   -21     9    27   .24    8    7 |   -1139     201     19    175
        |    1     0     2    32    23    12   .02           |    1690    1396
gfz  196|   -1     0     4   -11   -29   -31  -.28   12   12 |      17     -62     27    142
        |    1     0     0    63    77     6   .03           |     241     309
grg  130|    0     1     7   -48    12   -11   .63   16   14 |     762    -806     41    233
        |    0     0     2    16    26    20   .06           |    1190     844
igr  n/a|    0     0     0     0     2   -54  -.11    6    5 |    5490    -883     21    102
        |    0     0     1    18     9     8   .01           |    1136     728
jpl  128|    0     0   -13  -129   -87     3   .51   19   19 |     351    -826     22    302
        |    1     1     1    13     8    61   .03           |    1131     849
mit  286|    0    -1     5   -21    16   -24  -.33   16   13 |     534    -536     29    202
        |    1     1     0    11    20    19   .07           |    1146    1289
ngs  219|    0     0     1    84     4    -7  -.23   11    9 |   18833 -142970   2171   3911
        |    1     1     0    51    46    25   .03           |   50279  377914
sio  251|   -1     0    -2   205    43    11  -.24   18   16 |     ---     ---    ---    ---
        |    1     0     2    13    23    25   .05           |     ---     ---


Table 1.1647.b   GPS week : 1647   MJD: 55773.000-55779.000   

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



Table 2: Daily transformation of each centre to the combined IGS orbit and
         clocks for each day of the week. The transformation displayed is the
         sum of a priori and estimated transformations.
         WRMS - RMS weighted by the centres SP3 header accuracy codes.
         STA  - Number of stations in the daily solutions.
   
Table 2.1647.0   GPS week: 1647   Day: 0   MJD: 55773.000                            

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  250|    0     0    -1   -18     0     0  -.29    8    7 |   -1093     966     26     83
        |                     30    -3                       |
emr   91|   -2    -1    -5   -34    -2   -12   .35   18   18 |    3507   -1432     33    134
        |                    -11     3                       |
esa  137|    2     0    -1    19     1    33   .21    7    7 |    1206   -1323     25    176
        |                     24    -5                       |
gfz  196|    0     0     3  -105    50   -24  -.31   13   11 |     -18       5     32    139
        |                     30    22                       |
grg  130|    1     2     6   -83    58   -23   .59   14   14 |    2346   -1179     49    231
        |                    122   -42                       |
igr  n/a|    0     0     0   -14     5   -47  -.11    5    5 |    7053   -1006     26     92
        |                      7    31                       |
jpl  128|   -2     0   -14  -141   -89    -7   .53   19   18 |    1862   -1193     26    269
        |                      4    56                       |
mit  300|    0    -2     6   -15     2   -45  -.32   15   12 |    -375     646     37    214
        |                     -7    -7                       |
ngs  219|    0    -2     2   124   -63   -10  -.23   11    9 |   -1108     952   2341   4146
        |                    -95   105                       |
sio  251|   -4     1     1   194    14    34  -.19   19   18 |     ---     ---    ---    ---
        |                   -115   -19                       |

Table 2.1647.1   GPS week: 1647   Day: 1   MJD: 55774.000                            

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  250|    0     1    -3   -11    -8    32  -.25    9    8 |     773   -1284     22    102
        |                     47     3                       |
emr   91|   -1    -1    -6   -12     3   -25   .35   17   17 |    2334    -263     34    131
        |                    -36    -3                       |
esa  137|    0     0     2   -56     5    25   .22    8    8 |    -490     196     29    199
        |                     41    29                       |
gfz  196|    0     1     4   -70    46   -23  -.29   14   14 |     294    -172     29    155
        |                     23    65                       |
grg  130|    0     2     7   -49    19     3   .60   16   15 |    1590      62     58    264
        |                     44    -7                       |
igr  n/a|    0     0     0    -1    17   -56  -.10    6    5 |    6544     -45     24     94
        |                     16    35                       |
jpl  128|    0     1   -11  -128   -97   -70   .53   19   19 |    1231       7     24    317
        |                    -35    45                       |
mit  300|    1    -2     4   -24    24   -35  -.29   15   12 |    1962   -2175     32    262
        |                     -4   -15                       |
ngs  219|    0     0     0   151   -28   -27  -.22   11    9 |     752   -1282   2093   4116
        |                   -103    17                       |
sio  251|   -2     0    -1   223    37    41  -.22   18   17 |     ---     ---    ---    ---
        |                   -126   -23                       |

Table 2.1647.2   GPS week: 1647   Day: 2   MJD: 55775.000                            

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  250|    0     1    -3   -34     2   -19  -.25    8    7 |    -736      89     13     80
        |                     83     4                       |
emr   91|   -2    -1    -6   -29    30   -18   .38   17   17 |    1298    -937     17    135
        |                    -29   -28                       |
esa  137|    1     0     1   -64    13    14   .24    8    8 |   -3827    2342     15    164
        |                     43   -15                       |
gfz  196|    0     0     4    36   -39   -27  -.28   11   10 |     -87    -466     25    130
        |                     33    82                       |
grg  130|    0     1     7   -50    15   -28   .60   16   14 |    1381    -670     37    226
        |                     43    -6                       |
igr  n/a|    0     0     1   -25     4   -61  -.13    5    5 |    5901    -744     19     95
        |                     23    36                       |
jpl  128|    0     0   -12  -133   -81   110   .53   17   17 |     772    -719     22    316
        |                     90  -116                       |
mit  300|    1    -3     4   -24    15   -36  -.24   17   14 |    -704    1111     28    162
        |                    -11   -10                       |
ngs  219|    0     0     1   113     4     2  -.17   11    9 |    -763     105   2605   3853
        |                    -75   -19                       |
sio  251|   -1     0    -1   210    27    37  -.20   18   16 |     ---     ---    ---    ---
        |                   -111    -9                       |

Table 2.1647.3   GPS week: 1647   Day: 3   MJD: 55776.000                            

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  250|    0     0    -3   -27    -1    23  -.27    8    8 |     -90     427     16     86
        |                     21    -8                       |
emr   91|   -1     0   -10   -35    16    -1   .28   18   18 |     596   -1923     13    102
        |                    -27   -46                       |
esa  137|    1     0     4    -9   -15    27   .28    7    7 |   -2656    1300     16    190
        |                     38    21                       |
gfz  196|    0     1     3   -55    11   -37  -.24   13   12 |    -429     548     26    150
        |                     65    53                       |
grg  130|    1     1    11   -30    10   -16   .57   24   22 |     636   -2134     36    217
        |                      9    14                       |
igr  n/a|    0     0     0    -3    -8   -45  -.12    5    5 |    5326   -2043     21    129
        |                      9    10                       |
jpl  128|    0     1   -15  -104   -72   -50   .52   20   20 |     188   -2163     20    302
        |                     54    74                       |
mit  300|    0    -3     5   -41     5   -40  -.29   16   14 |    2301   -2193     24    186
        |                    -26    -5                       |
ngs  219|    0     0     1   107    -8    20  -.24   13   12 |     231     208   2045   3540
        |                    -52    19                       |
sio  251|   -1     0    -4   183    33    -7  -.30   16   15 |     ---     ---    ---    ---
        |                   -116   -21                       |

Table 2.1647.4   GPS week: 1647   Day: 4   MJD: 55777.000                            

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  250|    0     0    -4   -11   -20     9  -.27    8    8 |     295    -526     18     91
        |                     40    42                       |
emr   91|    1     2    -7   -94    33     4   .36   18   18 |    -588    -482     18    135
        |                     11   -45                       |
esa  137|    0     0     4   -41    -9    14   .23    8    7 |   -1622     852     21    169
        |                     60    27                       |
gfz  196|   -2     0     5    59   -11   -39  -.32   14   13 |       7    -196     28    142
        |                     10    63                       |
grg  130|    0     1     7   -45   -29    18   .70   15   13 |    -964    -844     36    206
        |                     27    82                       |
igr  n/a|    0     0     1     5   -11   -44  -.12    5    5 |    3964   -1014     19     91
        |                     -8    20                       |
jpl  128|    0    -1   -13  -135   -84   -14   .47   20   19 |   -1292    -845     22    295
        |                     17    63                       |
mit  300|    1     0     4    -8    58   -18  -.31   18   14 |     163    -875     26    177
        |                    -24     0                       |
ngs  219|    0     0     1    39     4     2  -.22   11    8 |     426    -650   2293   4043
        |                    -38   -61                       |
sio  251|   -1     1    -4   211    86    -3  -.30   17   16 |     ---     ---    ---    ---
        |                   -138   -29                       |

Table 2.1647.5   GPS week: 1647   Day: 5   MJD: 55778.000                            

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  250|    0     0    -4   -12    -8   -22  -.27   10    7 |    -585    -156     20     83
        |                     16     9                       |
emr   91|    1    -3    -4  -116    46    -7   .33   20   20 |      86    1008     20    135
        |                     40   -34                       |
esa  137|    1     0     3     3    55    51   .24    8    8 |    -425   -1416     17    165
        |                     29    -3                       |
gfz  196|   -1     0     3    18  -109   -31  -.24   11   11 |     108     -38     26    139
        |                      1    34                       |
grg  130|    0     1     3   -38    10   -36   .69   13   12 |    -614     376     38    229
        |                     47    15                       |
igr  n/a|    0     0     0    17     9   -62  -.12    6    5 |    4200      37     21    107
        |                    -12    26                       |
jpl  128|    0     2   -14  -117   -94     3   .47   19   18 |    -931     400     23    312
        |                     26    83                       |
mit  300|    0    -1     5   -23     1     4  -.40   17   13 |     161    -136     29    215
        |                    -12    17                       |
ngs  219|    0     1     2    19    48    13  -.28   11    9 |    -552    -125   1854   3591
        |                    -61   -32                       |
sio  251|   -2     0    -4   198    41    -1  -.25   17   16 |     ---     ---    ---    ---
        |                   -145   -22                       |

Table 2.1647.6   GPS week: 1647   Day: 6   MJD: 55779.000                            

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  250|    0     0    -4   -19     4    17  -.26    8    6 |    -538    -315     18     93
        |                     57    11                       |
emr   91|   -2    -1    -7  -112    61   -17   .36   20   20 |    2243    -782     13    114
        |                     28   -68                       |
esa  137|    0     0     4    -4    16    26   .25    6    6 |    -164    -543     15    162
        |                     28    22                       |
gfz  196|   -2     0     3    33  -155   -36  -.26   12   12 |     248    -121     25    142
        |                    -18    66                       |
grg  130|   -1     1     6   -43     0     3   .69   13   12 |     965   -1258     39    261
        |                     42   -15                       |
igr  n/a|    0     0     1    27     2   -62  -.09    6    5 |    5445   -1367     20    108
        |                     13    58                       |
jpl  128|    0     0   -13  -142   -93    50   .50   20   20 |     630   -1270     23    305
        |                     71    41                       |
mit  300|    2     0     4   -10     6    -2  -.44   15   12 |     231    -135     30    200
        |                     -7    15                       |
ngs  219|    2     0     0    37    75   -53  -.23   11    8 |  132847 -999999   1972   4088
        |                     18   -73                       |
sio  251|    0     1    -4   216    59   -19  -.24   19   16 |     ---     ---    ---    ---
        |                   -137   -16                       |

       
       
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 3.1647.0   GPS week: 1647   Day: 0   MJD: 55773.000                            

        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  |   37  ---   27  ---  ---   27  ---   24  ---  ---   22 |   115  ---  129  ---  ---  138  ---  129  ---  ---   122
   2  |    7   18    6   11   12    4   21   13    9   37    5 |    39   48   39   41   43   41   51   41   39   54    40
   3E |   13   18   11   12   15    7   20   30   23   11    6 |    57   59   56   61   58   58   59   65   67   58    57
   4  |    6    9    7    6   12    3   14   10   12   12    3 |    25   26   32   27   33   26   28   33   24   30    27
   5  |    6   15    7   12   10    6   20   14   11   21    4 |    37   41   37   40   39   39   43   36   40   34    36
   6E |   12   20    8   13   14    7   19   23   16   14    5 |    26   40   35   34   41   29   44   39   33   36    32
   7  |    7   16    8    9   17    6   20    8    9   16    4 |    17   30   24   22   29   22   31   18   22   17    20
   8  |    8   11    5   11   14    4   12   10    9   20    3 |    17   25   23   19   21   19   26   19   19   22    19
   9  |    9   16    8   12   12    5   16   14   10   17    4 |    17   21   18   15   20   14   22   23   15   28    17
  10  |    5    9    4   13   12    5    9   13   11   21    3 |    26   30   29   32   36   26   28   34   28   25    28
  11  |    7   18    5   12   16    3   17   11   11   10    4 |    23   33   23   24   34   22   29   23   22   22    22
  12  |    7   22    7   23   17    6   30   18   11   20    5 |    18   29   19   28   27   16   31   23   16   23    17
  13E |    8   18    7   10   12    6   17   14    8   17    4 |    16   30   24   18   30   19   27   20   17   21    19
  14E |    6   19    6   12   17    5   21   12    8   15    4 |    19   25   23   19   26   19   30   20   21   18    19
  15  |   12   26    7   12   12    7   21   11   11   13    4 |    32   32   33   31   37   30   34   25   29   25    28
  16  |    9   23    7   13   16    6   23   12   10   17    4 |    19   33   20   17   31   20   32   18   20   18    19
  17E |    8   13    7   10   22    6   22   12    9   16    4 |    30   37   34   27   33   30   37   33   31   34    31
  18  |    8   21    7   18   13    7   22   12    8   32    5 |    19   30   21   21   26   17   33   22   17   22    19
  19E |    6   24    7   11   13    6   19   13    7    9    4 |    26   37   31   21   31   23   34   31   24   25    27
  20  |    6   13    5   14    9    4   15    9    7   22    3 |    19   23   22   26   21   20   20   20   19   19    19
  21  |    7   20    7   11   12    6   24   22    7   20    4 |    31   45   33   28   40   29   44   26   28   29    31
  22  |    7   16    6   12   11    6   18   15    8   19    4 |    26   30   27   30   31   27   35   36   26   28    26
  23E |    6   20    6   14   12    6   19   14    9   17    4 |    44   46   50   51   51   47   45   48   48   46    46
  24  |    6   12    6    9   13    5   13   13   10   19    3 |    21   17   17   14   14   18   11   21   14   16    18
  25  |    6   15    5    7   18    6   25   16    8   15    4 |    14   23   19   18   34   16   39   15   16   17    15
  26E |   15   14    9   13   17    5   14   23   16   26    5 |    59   63   57   60   59   57   59   73   65   64    60
  27  |    9   15    7   12   12    4   16   14    9   15    4 |    13   20   16   14   20   12   22   22   16   24    15
  28  |   10   18    6   12   19    5   17    9    6   25    4 |    21   32   23   20   33   20   30   20   21   19    21
  29E |    9   23    8   11   17    6   25   14    8    9    4 |    17   29   19   15   21   16   30   18   19   19    16
 X30  |   11   16    7  ---  ---   13  ---   18  ---  ---    7 |    32   25   23  ---  ---   33  ---   18  ---  ---    34
  31  |    5   18    6   16   17    6   20    9   10   16    4 |    19   29   22   19   34   19   27   22   21   23    20
  32  |    5   15    6   12   10    3   11   12    6   10    3 |    17   16   19   23   22   16   18   19   17   19    17
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |    8   18    7   12   14    5   19   15   11   19      |T   28   32   31   27   32   29   33   31   26   27    29
 WRMS |    7   18    7   11   14    5   18   12    9   17      |NE  26   29   29   24   29   27   30   28   22   24    27
 MEDI |    7   18    7   12   13    6   19   13    9   17      |MD  21   30   23   23   31   22   31   23   21   23    21

Table 3.1647.1   GPS week: 1647   Day: 1   MJD: 55774.000                            

        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  |   25  ---   27  ---  ---   42  ---   26  ---  ---   18 |    81  ---   91  ---  ---  108  ---   94  ---  ---    86
   2  |    7   17    9   12   14    5   26   13   10   35    5 |    36   43   39   40   41   35   51   38   36   46    38
   3E |   14   17   10   11   22    8   18   35   21   14    6 |    57   55   58   56   63   56   51   71   67   57    58
   4  |    9   10    7   11   12    5   13   14   10   11    3 |    19   22   23   22   24   19   25   25   20   24    20
   5  |    7   13   10   11   11    7   23   11   16   21    4 |    44   44   44   44   46   44   49   45   46   44    44
   6E |   11   15   10   13   21    7   15   27   17   17    5 |    20   33   26   27   40   22   36   35   29   27    25
   7  |    7   18    8   12   19    6   18   10    8   15    4 |    20   29   19   23   28   19   27   22   22   18    20
   8  |    7   12    7   10   16    3    9   12    8   16    3 |    24   28   29   29   24   24   28   31   27   32    27
   9  |    9   14    7   11   14    6   12   15    8   16    4 |    14   19   17   15   14   14   23   24   21   25    16
  10  |    8    9    8   12   14    5   10   16   11   17    4 |    19   23   22   26   26   21   23   29   24   22    21
  11  |    7   17    5   14   15    5   19   12   12   15    4 |    16   30   19   22   29   16   29   22   20   20    18
  12  |    8   21    6   19   19    5   26   15    9   19    5 |    31   37   24   31   31   26   36   32   27   29    28
  13E |    8   16    7   10   22    6   15   11    8   12    4 |    17   25   24   18   28   20   26   19   23   17    20
  14E |    6   13    8   13   15    5   16   13    8   15    4 |    18   24   23   21   26   18   31   23   22   21    20
  15  |    7   25   10   13   21    8   21   14    8   20    5 |    16   27   20   15   30   15   27   17   20   14    17
  16  |    7   21    7   12   13    4   22   12   13   17    4 |    15   27   16   12   25   15   29   16   20   19    15
  17E |    8   15    8   13   15    5   17   12   13   16    4 |    20   31   25   24   28   21   31   21   24   24    23
  18  |    7   20    8   21   12    6   25   10    9   28    5 |    14   27   17   26   21   15   30   20   20   15    16
  19E |    8   21   10   11   12    3   17   12   11   12    4 |    27   39   31   32   29   29   38   32   28   31    29
  20  |    6   13    7   14   10    5   15    7   10   21    3 |    18   21   15   19   19   17   22   18   19   18    17
  21  |    7   21    5   13   17    6   24   14    6   18    4 |    22   33   24   18   31   20   36   22   21   19    22
  22  |    7   17    9   12   11    4   21   18    8   18    4 |    32   38   36   33   38   32   41   38   34   36    34
  23E |    9   21   10   17   17    5   17   12    9   20    5 |    26   32   27   33   26   26   27   29   29   22    25
  24  |    5   13    5    9   13    6   14   12   10   20    3 |    11   17    9   12   13   13   16   18    8   15    14
  25  |    8   15    6   24   23    6   26   15    7   15    5 |    21   31   23   30   30   23   38   29   24   30    23
  26E |   18   14    9   15   18    7   15   31   18   25    6 |    53   57   52   54   52   53   60   66   60   59    54
  27  |    9   13    7    9   15    6   12   14    9   14    3 |    15   21   16   14   18   16   24   24   22   25    17
  28  |    8   19   10   12   20    8   19    9   11   22    4 |    22   31   25   21   31   22   30   23   24   20    23
  29E |    8   19    7   14   15    5   22   14    8   16    4 |    20   27   20   21   22   19   28   21   20   20    19
 X30  |   11   15   13  ---  ---    8  ---   14  ---  ---    7 |    31   22   19  ---  ---   28  ---   16  ---  ---    32
  31  |    7   19    9   18   17    5   18    9   11   12    4 |    14   28   19   22   28   16   28   18   17   20    17
  32  |    7   15    8   12   12    5   15   10   11   11    3 |    22   22   21   22   25   21   23   23   24   21    22
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |    9   17    8   14   16    6   19   15   11   18      |T   25   30   27   26   29   26   32   30   26   26    26
 WRMS |    8   17    8   14   15    5   19   12    9   17      |NE  24   28   25   23   27   25   30   28   23   24    25
 MEDI |    8   16    8   12   15    5   17   13   10   16      |MD  20   28   23   22   28   21   29   23   23   22    22

Table 3.1647.2   GPS week: 1647   Day: 2   MJD: 55775.000                            

        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  |   32  ---   40  ---  ---   18  ---   33  ---  ---   25 |   119  ---  148  ---  ---  137  ---  127  ---  ---   130
   2  |    9   16    9   12   13    5   21   17    9   35    5 |    37   45   38   38   44   35   51   37   37   52    38
   3E |   14   19    9   11   34    6   20   39   20   12    7 |    33   31   32   35   53   35   37   56   41   34    34
   4  |    6   12    7    7   13    4   12   14   13   13    3 |    17   22   21   21   25   19   27   24   19   24    18
   5  |    8   14   10   10   13    5   16   18   10   21    4 |    26   30   28   30   35   27   38   27   27   27    27
   6E |    9   20    8   10   15    5   17   29   17   13    5 |    21   35   32   26   37   25   41   38   30   30    27
   7  |    6   17    7   11   17    5   15   12   10   13    4 |    13   22   15   16   24   11   28   17   14   14    13
   8  |    7   13    8    9   12    3   10   14    9   10    3 |    14   24   19   15   18   13   29   26   14   20    16
   9  |   11   14    7    8   13    5   13   17   11   14    4 |    12   18   17   16   15   13   28   26   19   25    15
  10  |    6   14    9    9   13    7    9   15   11   16    3 |    18   23   21   24   30   19   24   29   21   21    20
  11  |    6   14    5   11   18    4   15   12   10   14    3 |    13   27   17   15   31   13   31   14   15   15    14
  12  |    7   19   10   16   17    6   19   19    9   24    5 |    19   27   14   26   20   15   27   22   14   18    14
  13E |    7   12    7    8   17    6   17   13   10   10    3 |    19   28   22   23   31   20   35   21   22   20    21
  14E |    7   15   11   10   14    8   18   13   10   13    4 |    15   21   21   15   24   15   31   19   16   16    15
  15  |    6   26    9   11   19    6   20   16   11   17    5 |    13   25   17   17   24   13   24   18   17   16    14
  16  |    6   18   11   11   15    5   22   12   13   17    4 |    15   26   16   12   23   11   27   14   15   11    12
  17E |    6   20   10    9   12    4   18   16    8   14    4 |    19   33   24   22   28   21   35   19   24   19    22
  18  |    7   20    9   16   12    7   19   12    8   27    5 |    12   26   17   22   17   14   29   17   11   15    11
  19E |    5   18    7    9   16    5   19   19   10   11    4 |    20   35   28   20   28   24   38   23   22   26    23
  20  |    6   13   10   12    9    5   15    9   10   22    4 |    16   18   18   21   17   15   22   12   16   14    14
  21  |    7   22    7   12   12    5   22   12    7   18    4 |    21   33   25   19   30   20   37   22   21   21    21
  22  |    8   14    7   11   13    7   19   23   11   25    4 |    22   32   29   23   34   26   38   32   28   28    25
  23  |    7   19    9   12   20    7   17   13   11   18    4 |    46   51   50   54   53   51   52   53   53   47    49
  24  |    5   11    4    9   13    4   12   12   11   19    3 |    12   12   13   15   10   11   15   16   15   11    12
  25  |    7   13    7   15   17    4   28   15    7   15    4 |    10   21   14   20   25    8   40   18   14   14    11
  26E |   15   19    8   11   20    6   15   30   18   24    6 |    39   44   41   44   41   39   47   51   41   50    40
  27  |    9   16    4    8   16    4   12   17   12   12    4 |    12   23   16   13   16   13   26   26   18   23    14
  28  |    6   18   10    9   19    6   18   13   10   23    4 |    12   26   17   14   27   11   32   18   14   14    13
  29E |    8   24    9   13   18    5   22   14   12   10    5 |    16   28   17   15   19   13   29   14   20   15    15
 X30  |   11   19   15  ---  ---   15  ---   16  ---  ---    8 |    39   23   25  ---  ---   37  ---   23  ---  ---    42
  31  |    6   18    9    9   19    5   16   10   10   12    4 |    14   27   19   14   28   13   28   18   15   18    15
  32  |    6   14    9    9   10    5   12   12    7   11    3 |    15   17   18   20   21   13   23   16   16   14    15
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |    8   17    8   11   16    5   17   17   11   18      |T   22   27   26   22   27   23   32   27   21   22    24
 WRMS |    7   17    8   10   14    5   17   14    9   16      |NE  21   24   25   19   24   22   29   26   18   19    22
 MEDI |    7   17    9   10   15    5   17   14   10   14      |MD  16   26   19   20   25   15   29   22   18   19    15

Table 3.1647.3   GPS week: 1647   Day: 3   MJD: 55776.000                            

        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  |   32  ---   35  ---  ---   48  ---   25  ---  ---   23 |    91  ---  112  ---  ---  105  ---  105  ---  ---   100
   2  |    6   21    8   10   11    4   22   13   10   31    5 |    36   49   41   35   39   38   48   38   35   48    38
   3E |   11   23    8   14  104    7   24   34   20   14    6 |    80   81   81   82  111   81   84   97   88   79    82
   4  |    7   12    8   14   14    4   14   15   12   13    4 |    15   19   22   13   28   18   19   27   16   23    18
   5  |    8   13    6   13   14    4   21   15   11   20    4 |    31   36   37   38   39   34   35   37   32   31    33
   6E |    9   16    8   16   18    7   16   31   22   13    5 |    21   34   31   29   40   26   40   43   32   31    28
   7  |    9   17    8   19   19    6   20   14   13   12    4 |    16   26   20   24   29   18   27   20   21   19    18
   8  |    7   12    5   12   11    4   10   13   13    8    3 |    21   23   21   24   23   22   25   27   26   23    21
   9  |    9   16    7   13   11    6   14   18   10   12    4 |    16   19   20   18   19   15   21   27   17   19    16
  10  |    5   14    7   10   17    6   12   12   12   13    3 |    24   27   29   33   39   25   25   34   23   25    26
  11  |    7   18    9   11   18    5   18   12   10   13    4 |    14   29   20   20   33   17   28   16   17   14    17
  12  |    6   18    7   20   16    6   23   14   12   17    5 |    19   29   20   24   26   17   31   23   16   21    19
  13E |    7   17    7    9   17    6   21   15   11    6    4 |    28   33   32   32   37   30   36   34   31   31    30
  14E |    8   14    9   13   13    5   22   11   16   10    4 |    22   30   26   20   29   22   32   23   26   21    23
  15  |    7   22   10   13   14    6   21   16   12   17    4 |    14   26   22   19   27   16   20   23   16   18    16
  16  |    7   20    7   13   14    7   23   13   15   15    4 |    10   24   17   10   24   12   27   15   17   10    12
  17E |    6   24    8   10   16    5   23   15   12   13    4 |    26   38   32   28   33   27   32   28   29   26    28
  18  |    7   20    9   11    9    5   21   16   13   24    5 |    15   27   24   20   25   16   30   24   16   19    17
  19E |    7   24    8   10   14    4   20   14   14   11    4 |    28   41   31   28   34   27   37   30   27   28    28
  20  |    6   17    7   12   10    4   17   11   16   21    4 |    16   20   21   23   19   19   18   18   21   16    17
  21  |    7   23    7   12   16    4   25   11    9   17    4 |    25   39   28   25   32   25   44   26   26   23    26
  22  |    8   17    8   12    9    4   21   17   12   19    4 |    23   33   31   28   32   26   34   35   29   28    27
  23  |    6   21    6    9   17    6   21   14   12   12    4 |    45   48   48   50   59   50   48   49   50   44    47
 X24  |    5  ---  ---  ---  ---   93  ---  ---  ---  ---    0 |     9  ---  ---  ---  ---   83  ---  ---  ---  ---     9
  25  |   10   15    5   18   13    4   27   14    9   14    4 |    19   32   26   23   32   21   44   24   21   22    22
  26E |   18   18    7   15   17    5   16   27   20   24    6 |    65   66   61   62   66   63   64   70   63   69    63
  27  |    9   19    6   14   13    6   14   17   10   11    4 |    16   25   19   18   19   16   22   26   18   20    17
  28  |    8   17    6   14   16    6   21   11   10   21    4 |    14   28   20   18   28   16   29   22   16   16    17
  29E |    9   19    8   11   23    4   26   10   10   11    4 |    21   34   26   24   31   23   35   22   22   25    24
 X30  |   12   19   11  ---  ---    9  ---   14  ---  ---    7 |    43   47   40  ---  ---   46  ---   31  ---  ---    47
  31  |    7   15    6   10   18    6   17   10    9   10    3 |    18   30   26   22   33   19   28   24   22   22    21
  32  |    7   14    6    7   10    4   18   13   10    9    3 |    19   20   24   24   27   21   23   23   22   20    21
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |    8   18    7   13   24    5   20   16   13   16      |T   26   33   32   28   34   31   34   33   27   27    29
 WRMS |    8   18    7   12   22    5   20   14   12   15      |NE  22   28   29   22   28   28   28   29   21   21    25
 MEDI |    7   17    7   12   14    5   21   14   12   13      |MD  21   30   26   24   32   22   31   27   22   23    22

Table 3.1647.4   GPS week: 1647   Day: 4   MJD: 55777.000                            

        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  ---   25  ---  ---   46  ---   40  ---  ---   18 |    75  ---   88  ---  ---   98  ---   89  ---  ---    80
   2  |    8   18    6   10   12    5   23   14   12   31    5 |    27   38   32   28   36   28   40   30   29   42    30
   3E |   11   21    8   10   19    6   23   42   19   19    6 |    46   43   46   44   47   45   46   59   53   47    44
   4  |    7   14    7   10    9    5   14   13   11   10    3 |    13   20   20   18   24   15   18   21   15   20    15
   5  |    9   15    8   14   12    5   20   16    8   19    4 |    17   24   24   26   28   19   28   29   18   24    20
   6E |    7   17    6   12   16    6   17   39   19   15    5 |    17   29   26   22   34   21   35   46   28   29    23
   7  |    7   22    8   25   12    5   17   11   10   11    4 |    15   28   17   28   25   14   25   18   17   18    16
   8  |    8   14    8   14   13    4   10   11   10    8    3 |    13   21   17   17   16   12   19   19   12   17    14
   9  |   10   16   11    6   15    7   16   17   10   13    4 |    14   18   22   18   17   14   22   28   23   19    18
  10  |    6   14    6   11   12    5   10   12    9   14    3 |    20   24   25   28   30   22   22   25   25   22    22
  11  |    5   12    7   12   19    4   20   12    8   11    4 |    11   23   18   13   31   11   26   16   15   13    13
  12  |    6   20    6   17   15    4   23   15   11   14    4 |    12   26   14   19   18    9   25   16   12   13    11
  13E |    9   16    6   13   11    4   17   15   12    9    4 |    26   34   31   35   38   30   35   24   26   26    28
  14E |    9   15   17   10   16    6   21   14    9   11    4 |    24   36   29   27   33   30   37   35   32   31    28
  15  |    9   26    8   12   19    7   22   18   14   17    5 |    12   24   17   19   29   15   24   22   19   20    14
  16  |    6   23    7   22   15    5   24   15   11   16    5 |    10   28   20   15   23   10   29   15   13   13    12
  17E |    6   21    7   11   14    5   20   15   11   10    4 |    17   28   22   18   27   17   29   21   18   17    19
  18  |    7   18    7   18   11    3   21   18    7   24    5 |    14   25   18   25   25   16   29   22   23   16    16
  19E |    6   14    6    8   15    4   21   12    8   13    3 |    18   27   24   19   27   18   32   20   19   20    20
  20  |    7   15    8   12   10    5   17   11    9   22    4 |    13   19   20   18   19   14   18   15   15   14    14
  21  |    9   21    8    9   15    6   28   13    8   17    4 |    21   36   25   20   31   20   40   22   21   20    22
  22  |    8   15    7    6   11    5   17   15    6   19    4 |    17   29   26   22   33   20   31   31   22   26    22
  23  |   10   21    7   12   21    4   19   14    8   14    4 |    32   39   38   39   43   34   36   31   32   30    33
 X24  |    4  ---    6    9  ---    7   14   14   10   17    4 |     7  ---   10    7  ---   30   10   17   11   10     7
  25  |    8   15    6   20   11    4   25   14   12   14    4 |     9   20   14   16   23    8   36   13   15   11    11
  26E |   20   20   11   14   18    5   15   33   20   30    7 |    70   73   73   73   73   71   72   87   73   73    71
 X27  |   11   18    7    8   15    6  ---   18    9   11    4 |    15   23   21   19   17   19  ---   32   25   24    19
  28  |    5   19    5   25   15    6   20   11   12   22    5 |    11   26   19   34   27   13   27   15   16   16    16
  29E |    7   23    7   11   20    6   27   12   12   12    5 |    15   29   18   17   22   13   26   15   15   17    15
 X30  |    5  ---  ---  ---  ---   18  ---  ---  ---  ---    0 |    33  ---  ---  ---  ---   34  ---  ---  ---  ---    37
  31  |    7   17    6   12   13    6   16   13   12   10    4 |    15   28   21   20   29   16   25   17   16   16    18
  32  |    7   14    4   10   10    5   16   13    6   10    3 |    15   20   22   21   23   18   24   21   22   18    19
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |    8   18    8   14   15    5   20   18   11   17      |T   21   28   26   24   29   23   29   28   22   22    23
 WRMS |    8   18    7   13   13    5   19   14    8   16      |NE  17   25   23   20   25   20   25   24   18   18    20
 MEDI |    7   17    7   12   15    5   20   14   10   14      |MD  15   27   22   20   27   18   28   22   19   19    19

Table 3.1647.5   GPS week: 1647   Day: 5   MJD: 55778.000                            

        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  |   14  ---   11  ---  ---   23  ---   20  ---   25    9 |    89  ---   99  ---  ---   85  ---   93  ---    3    94
   2  |    7   26    9    7   12    5   24   10    9   36    5 |    36   47   40   35   47   36   45   33   33   53    37
   3E |   11   17   12    6   17    6   21   39   19   18    6 |    80   78   78   79   76   82   77   90   85   78    78
   4  |    7   17    6    7   10    4   15   12    8   11    3 |    12   18   21   14   22   13   18   20   14   19    14
   5  |    7   18    7   11   11    6   18   12   10   20    4 |    29   37   36   32   40   33   36   31   31   32    31
   6E |   12   20    8   11   17    6   19   34   18   15    6 |    18   32   27   24   37   22   37   44   25   27    24
   7  |    6   23    7   18   10    5   18   12    8   12    4 |    14   28   21   23   26   19   24   18   19   16    16
   8  |    8   16    4   12   13    4   11   12    9    6    3 |    16   24   21   18   19   17   22   21   22   18    17
   9  |    7   17    8    9   14    4   13   15   11   12    4 |    11   19   20   18   17   12   17   21   16   14    12
  10  |    5   13    5    9    9    5   10   10    6   17    3 |    17   22   26   24   23   20   19   19   23   22    20
  11  |    7   12    6   10   17    6   18   15   11   14    4 |    14   27   21   14   35   15   25   24   20   20    17
  12  |    6   22    7   12   11    5   23   14   12   16    4 |    19   30   18   23   22   17   28   22   20   21    17
  13E |    8   21    7    8   12    5   22   14   10   10    4 |    27   38   35   31   38   28   35   34   32   32    31
  14E |   31   16   12   12   12   14   17   13   15   13    6 |    83   76   82   79   82   70   77   73   76   70    77
  15  |    8   32    7   13   17    6   21   19   12   16    5 |    13   26   22   21   32   17   21   26   17   24    16
  16  |    8   24   10   16   14    6   25   21    9   17    5 |    10   27   19   12   22   14   27   20   14   11    12
  17E |    7   21    9    7   13    6   23   11    8   14    4 |    28   37   32   29   36   28   34   28   28   26    29
  18  |    7   23   10   13    9    5   21   20   11   25    5 |    17   29   24   24   22   17   30   26   20   19    19
  19E |    8   25    9    8   12    5   20   11   10   10    4 |    21   40   29   21   35   22   31   24   24   23    24
  20  |    7   17    6   14    9    5   17   12   10   23    4 |    10   20   17   20   14   12   17   16   12   15    12
  21  |    9   20    8   10   12    4   24   13   10   19    4 |    19   33   27   21   33   20   36   20   19   19    21
  22  |    6   17    7    9    6    4   18   14    8   18    3 |    19   31   26   21   28   22   32   23   16   20    21
  23  |    8   22    8   11   17    5   23   13    8   22    4 |    29   37   36   35   41   32   34   33   30   31    32
  24  |    6   13    6    9   11    6   14   16    9   16    3 |    10    9   16   11    5   15   12   22   13   18    12
  25  |    8   16    7   18   12    5   21   13   11   13    4 |    16   25   21   22   26   19   36   20   18   19    17
  26E |   20   21    8   14   18   13   14   23   17   26    6 |    90   95   91   94   92   95   92  102   95   93    91
  27  |    7   17    8   11   15    5   13   17   10   10    4 |    12   17   19   20   17   14   18   25   19   14    13
  28  |    7   23    7   11   10    5   19   12   11   20    4 |    10   28   16   14   26   12   25   15   15   16    12
  29E |   10   18    8    9   21    5   25   15   15   13    5 |    18   26   24   18   27   18   28   19   17   20    17
  31  |    6   18    8   10   14    6   17   17   11   15    4 |    23   30   28   27   35   22   32   28   21   25    24
  32  |    6   15    7   10    8    6   12   11    8   12    3 |    13   18   20   19   18   15   18   20   15   18    15
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |   10   20    8   11   13    6   19   17   11   17      |T   26   33   32   28   33   27   32   32   26   26    28
 WRMS |    7   20    8   11   12    5   18   13    9   16      |NE  19   25   26   20   25   21   25   25   18   19    21
 MEDI |    7   18    8   10   12    5   18   14   10   16      |MD  18   28   24   21   27   19   28   24   20   20    19

Table 3.1647.6   GPS week: 1647   Day: 6   MJD: 55779.000                            

        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  ---   23  ---  ---   22  ---   34  ---  ---   17 |   112  ---  130  ---  ---  125  ---  128  ---  ---   122
   2  |    6   22    5   12   13    7   25   10    9   36    5 |    35   46   41   32   48   36   50   32   34   60    38
   3E |   12   19    8    9   16   10   20   40   23   24    6 |    98   96   92   96   93   95   96  116  100   87    96
   4  |    5   17    4    9    9    6   13    8   11   10    3 |    20   26   28   23   34   21   27   24   21   27    23
   5  |    6   15    9   15   12    5   23    8   11   25    4 |    30   35   40   37   43   34   39   29   33   29    33
   6E |   12   21    7    7   14    5   23   23   13   29    5 |    25   35   36   30   43   29   41   39   34   44    31
   7  |    6   20    6   26   13    4   23   15    8   14    4 |    16   27   17   36   24   17   26   16   22   20    18
   8  |    6   13    5   12   12    4   12   11   11    8    3 |    13   22   18   24   19   14   21   20   18   20    16
   9  |    7   17    7    9   13    3   13   12    9   14    3 |    13   17   17   14   15   14   18   16   15   15    12
  10  |    5   13    6   14   13    3   12   10    8   20    3 |    29   33   34   38   41   31   32   30   34   29    31
  11  |    6   15    4    9   17    4   17    6    8   10    3 |    17   33   24   21   41   20   27   20   19   24    21
  12  |    7   20    7   12   13    5   20   16   12   22    4 |    17   27   17   22   21   14   27   20   13   17    15
  13E |    8   21    6   16   11    4   20   11    9   12    4 |    18   26   25   28   32   22   27   15   22   19    21
  14  |   21   20    6    8   15   14   20   11   16   16    5 |    84   94   88   91   91   82   95   94   93   86    89
  15  |    6   28    6   15   15    3   25   15   12   15    4 |    14   23   20   24   29   16   24   22   16   21    16
  16  |    6   24    5   14   12    6   26   18   10   19    4 |    12   30   17    8   22   14   31   19   14   13    12
  17E |    4   21    6   13   14    6   23    9    7   16    4 |    27   37   33   27   40   29   38   29   28   34    30
  18  |    5   22    6   16    9    4   23   22   10   24    5 |    16   26   23   27   22   18   28   26   18   20    17
  19E |    4   24    6    8   12    4   20    8    9   10    3 |    21   41   28   22   30   24   34   20   24   27    24
  20  |    6   18    6   14    8    5   16    6   10   24    3 |    18   23   22   29   21   21   20   19   18   19    19
  21  |    7   20    8    6   12    4   29   11    8   18    4 |    25   36   29   20   34   23   45   21   24   23    25
  22  |    5   18    4    9    8    3   22   13   15   20    4 |    21   32   27   26   34   25   31   28   25   21    24
  23  |    6   24    5   13   17    4   22    9    8   21    4 |    39   45   44   44   48   42   40   40   42   41    41
  24  |    5   17    7   10   11    5   13    9    5   16    3 |     9   15   13   10    7   17   12   14   11   13     9
  25  |    5   12    6   10   12    6   24   16   13   12    4 |    15   24   17   24   25   15   37   18   12   13    15
  26E |   12   21    8   11   19   12   13   13   14   27    5 |   120  127  122  119  123  115  122  119  119  125   120
  27  |    8   17    6    9   14    4   13    9   14   11    3 |    16   19   19   17   19   17   20   15   20   18    15
  28  |    6   21    6   13   12    4   21    8   10   22    4 |    10   30   17   17   26   13   26   12   17   18    12
  29E |    8   24   12   11   21    5   28   17   11   18    5 |    20   29   28   24   27   19   31   21   22   21    21
 X30  |    5  ---  ---  ---  ---  ---  ---  ---  ---  ---    0 |     8  ---  ---  ---  ---  ---  ---  ---  ---  ---     9
  31  |    6   20    5   10   14    5   17   19   17   15    4 |    18   29   20   21   28   18   28   17   21   18    17
  32  |    5   14    5    9    8    4   14    8    7   12    3 |    24   30   31   34   33   28   29   30   28   28    28
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |    8   20    6   12   13    6   20   15   11   19      |T   30   37   36   32   37   32   37   34   30   31    31
 WRMS |    6   20    6   12   12    5   20   12    8   16      |NE  22   27   28   24   27   25   28   26   20   22    23
 MEDI |    6   20    6   11   13    5   20   11   10   16      |MD  18   30   27   24   30   21   29   21   22   21    21



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 4.1647   GPS week: 1647   MJD: 55773.0-55779.0

CENT| CLK EPO  |        BRUS       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 2975 |U   11    10    28 |U    5     7    25 |U   10    10    20 |
emr | emr 2896 |U   13    11    33 |U    7     8    31 |    10     9    22 |
esa | esa 3017 |    10    11    27 |U    6     7    25 |     9     8    19 |
gfz | gfz 2852 |U   13    11    33 |U    6     7    31 |U   10    11    22 |
grg | grg 2852 |    14    12    35 |U    6     7    26 |    10    12    22 |
igr | igr 2963 |    11    11    28 |     6     7    25 |     9     9    19 |
igs | igs 2981 |    11    11    30 |     5     7    25 |     9     8    18 |
jpl | jpl 2838 |U   13    11    35 |U    7    12    35 |     9    10    25 |
mit | mit 3017 |U   18    17    83 |U    8    11    34 |U   12    11    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 5.1647.0   GPS week: 1647   Day: 0   MJD: 55773.0

CENT| CLK EPO  |        BRUS       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3065 |     7     5    18 |     4     6    22 |    12     8    24 |
emr | emr 2964 |    12     9    28 |     7     8    27 |    13    10    27 |
esa | esa 3072 |     8     6    17 |     5     6    22 |    10     8    25 |
gfz | gfz 2868 |    13     7    23 |     4     6    22 |    12    18    33 |
grg | grg 2880 |    13     8    23 |     5     7    25 |    13    25    36 |
igr | igr 3013 |     8     5    17 |     4     5    21 |    12     8    24 |
igs | igs 3070 |     8     5    18 |     4     8    25 |    11     8    23 |
jpl | jpl 2866 |    13     9    27 |     6    18    44 |    13    15    26 |
mit | mit 3072 |    56    54   396 |     9    20    45 |    25    18    30 |

Table 5.1647.1   GPS week: 1647   Day: 1   MJD: 55774.0

CENT| CLK EPO  |        BRUS       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3067 |     7     8    24 |     6     8    27 |    10    12    21 |
emr | emr 2964 |     8     9    28 |     8    11    31 |     9     8    18 |
esa | esa 3072 |     6     8    22 |     6     7    25 |     7     8    17 |
gfz | gfz 2868 |     8     9    27 |     6     7    27 |     8     9    19 |
grg | grg 2880 |     9    10    29 |     5     6    28 |    10     9    18 |
igr | igr 3020 |     6     9    24 |     5     7    26 |     7     9    18 |
igs | igs 3065 |     6     8    22 |     5     8    25 |     8     9    16 |
jpl | jpl 2868 |    10     8    29 |     8    20    37 |     7     8    20 |
mit | mit 3072 |     5     7    21 |     9    19    38 |     9    10    22 |

Table 5.1647.2   GPS week: 1647   Day: 2   MJD: 55775.0

CENT| CLK EPO  |        BRUS       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3061 |     8    11    25 |     8     7    25 |     8     7    19 |
emr | emr 2964 |    10    13    26 |     8     7    27 |    10     8    24 |
esa | esa 3072 |     8    13    24 |     7     6    22 |     8     6    20 |
gfz | gfz 2863 |    11    13    33 |     8     7    24 |     8     7    19 |
grg | grg 2880 |    11    11    38 |     8     7    24 |     8     8    19 |
igr | igr 3058 |     8    11    22 |     8     6    24 |     8     7    19 |
igs | igs 3068 |     8    12    22 |     7     7    23 |     7     6    19 |
jpl | jpl 2861 |    11    12    35 |     9    13    40 |     7     7    20 |
mit | mit 3072 |    18    12    36 |    10     8    30 |     9     9    18 |

Table 5.1647.3   GPS week: 1647   Day: 3   MJD: 55776.0

CENT| CLK EPO  |        BRUS       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 2970 |     9    10    30 |     5     6    19 |     9    11    19 |
emr | emr 2868 |    11    10    35 |     6     8    23 |    10     9    22 |
esa | esa 2976 |    10    11    33 |     5     5    24 |     8     9    19 |
gfz | gfz 2767 |    12    10    34 |     6     6    34 |     8    10    23 |
grg | grg 2784 |    14    12    41 |     6     6    26 |    10    12    26 |
igr | igr 2939 |    10    11    32 |     5     5    23 |     9    11    20 |
igs | igs 2833 |    14    14    47 |     5     6    19 |     8     9    19 |
jpl | jpl 2772 |    12    10    43 |     6    13    29 |     9     9    26 |
mit | mit 2976 |     9    10    29 |     5     5    27 |     9    11    19 |

Table 5.1647.4   GPS week: 1647   Day: 4   MJD: 55777.0

CENT| CLK EPO  |        BRUS       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 2688 |    17    10    35 |     8     7    31 |    10    12    20 |
emr | emr 2772 |    14    11    30 |     8     8    46 |    11    11    25 |
esa | esa 2976 |    13    12    25 |     8     7    34 |     9     9    18 |
gfz | gfz 2869 |    12    10    27 |    10     6    44 |     9     8    20 |
grg | grg 2784 |    14    10    30 |     8     9    34 |    11    13    22 |
igr | igr 2947 |    12    11    26 |     8     7    32 |    10     8    19 |
igs | igs 2940 |    12    11    26 |     8     7    33 |    10     8    17 |
jpl | jpl 2769 |    14    12    27 |     7     7    40 |    10    11    25 |
mit | mit 2976 |    11    12    28 |     8     9    46 |    13    12    21 |

Table 5.1647.5   GPS week: 1647   Day: 5   MJD: 55778.0

CENT| CLK EPO  |        BRUS       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 2964 |    10    11    24 |     5     9    27 |    11    11    15 |
emr | emr 2868 |    12    13    29 |     8    10    30 |    11     9    18 |
esa | esa 2976 |    10    10    26 |     5     9    25 |    12     9    14 |
gfz | gfz 2868 |    14    12    32 |     5    10    29 |    12    11    15 |
grg | grg 2880 |    13    13    28 |     5     9    22 |    11    10    17 |
igr | igr 2913 |    10    11    26 |     6     9    24 |    11     9    13 |
igs | igs 2926 |    10    11    25 |     6     8    26 |    11     9    14 |
jpl | jpl 2867 |    13    12    29 |     6     8    26 |     9    12    38 |
mit | mit 2976 |    10    11    24 |     8     9    28 |    10     8    16 |

Table 5.1647.6   GPS week: 1647   Day: 6   MJD: 55779.0

CENT| CLK EPO  |        BRUS       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3013 |    16    14    42 |     4     5    24 |     9    13    20 |
emr | emr 2872 |    20    15    52 |     5     7    30 |    10     9    23 |
esa | esa 2976 |    16    15    45 |     4     6    25 |    10    11    21 |
gfz | gfz 2862 |    21    18    53 |     4     7    34 |    11    14    23 |
grg | grg 2880 |    22    18    53 |     5     7    26 |     9     9    20 |
igr | igr 2853 |    20    16    50 |     4     6    27 |    10    11    18 |
igs | igs 2970 |    16    15    47 |     4     5    25 |    10    11    19 |
jpl | jpl 2863 |    20    15    53 |     5     5    27 |     9     9    22 |
mit | mit 2976 |    16    15    50 |     4     5    28 |    12    12    26 |


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 6.1647   GPS week: 1647   MJD: 55773.500-55779.500

                                                         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 |       0     -45      29     -54     -1 |       3     15
            |      19      22      66      61      6 |       2
emr   uuxuu |      40       1      99      77      7 |      33     36
            |      23      27     217     102      6 |       4
esa   uuuuu |      -3     -40      67     -76      3 |      12     19
            |      15      15      59      61      4 |       4
gfz   uuuuu |     -47     -23      44     -51      5 |      -2     16
            |      27      30     131     124      4 |       5
grg   uuuux |       2     -51      45    -127    -15 |      36     57
            |      39      37     155     107     49 |       7
igr   xxxxx |     -23     -10      26     -54      7 |      -2     17
            |      21      15      79      34      5 |       4
irf   xxxxx |       8      -3     -49     -11     -1 |       4     15
            |       9       8      31      64      5 |       3
jpl   uuuuu |     -27     -35     123     -12     -1 |      27     31
            |      62      36      63      70      7 |       3
mit   uuuuu |       9      10    -200     -55      0 |      19     23
            |      17      13      58     119      4 |       4
ngs   uuuuu |      14      55     -55     243     -5 |      11     14
            |      56      34     163     151      3 |       2
sio   uuuuu |      28     124     -56       3     -9 |      35     37
            |      14      16      55     146     12 |       2


Table 7.1647.0   GPS week: 1647   Day: 0   MJD: 55773.500

                                                         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     -33      68     -81     -1 |       0     15
emr   uuxuu |      13       8     -65     -45      4 |      27     29
esa   uuuuu |      21     -27       4     -78      0 |       7     14
gfz   uuuuu |      -6     -33      41     155     10 |     -10     15
grg   uuuux |      58    -125     333     -24    -79 |      33     54
igr   xxxxx |     -15     -10     110     -88      2 |      -7     15
irf   xxxxx |      16      -3     -81      53      8 |      -2     11
jpl   uuuuu |     -40      -7     169     -70      1 |      24     28
mit   uuuuu |      23       4    -235      43      2 |      14     18
ngs   uuuuu |     -89      92    -124      -1     -8 |       8     11
sio   uuuuu |      35     112     -63     137      4 |      30     33

Table 7.1647.1   GPS week: 1647   Day: 1   MJD: 55774.500

                                                         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 |      13     -65      42      31     -3 |       1     16
emr   uuxuu |      19      18     -82      34      4 |      29     33
esa   uuuuu |     -13     -59      93    -128      5 |       8     16
gfz   uuuuu |     -49     -41     180      16      7 |      -7     17
grg   uuuux |      23     -62     119    -229    -37 |      32     54
igr   xxxxx |     -19     -34     -11     -86      2 |      -5     16
irf   xxxxx |      16     -18     -59      95      4 |       1     14
jpl   uuuuu |     -29      17      63    -120     -4 |      26     30
mit   uuuuu |      31     -14    -235     146      3 |      15     20
ngs   uuuuu |      -1      85    -140     146     -7 |       9     12
sio   uuuuu |      39     108     -88     171     -4 |      33     37

Table 7.1647.2   GPS week: 1647   Day: 2   MJD: 55775.500

                                                         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 |     -12     -82      19    -102     -8 |       2     16
emr   uuxuu |      20      30    -152      45     -4 |      30     34
esa   uuuuu |       7     -42     153    -130      0 |       9     18
gfz   uuuuu |     -90     -32     196      10      2 |      -5     17
grg   uuuux |      -2     -42     101    -198    -18 |      32     54
igr   xxxxx |     -44     -22      53     -87      4 |      -5     17
irf   xxxxx |      -8       1     -76     -10     -2 |       3     16
jpl   uuuuu |     108     -89      73      10      1 |      25     30
mit   uuuuu |       2      12    -283     -63      4 |      17     22
ngs   uuuuu |      11      76    -259     214      0 |      11     14
sio   uuuuu |       1     112    -125     106    -15 |      36     39

Table 7.1647.3   GPS week: 1647   Day: 3   MJD: 55776.500

                                                         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     -23     138     -14     -5 |       2     16
emr   uuxuu |      61      25     100      98     11 |      31     35
esa   uuuuu |      -6     -40     106     -85     10 |      10     19
gfz   uuuuu |     -38     -67     116    -174      6 |      -3     16
grg   uuuux |       1     -11     -34    -172    -36 |      32     54
igr   xxxxx |       5     -11      60     -22     10 |      -4     16
irf   xxxxx |      15      -2     -14     -36     -6 |       4     16
jpl   uuuuu |     -59     -56     141      15     -7 |      26     30
mit   uuuuu |      20      24    -164     -81     -1 |      18     23
ngs   uuuuu |      -4      50    -188     445     -7 |      11     14
sio   uuuuu |      36     114     -47     -27    -28 |      37     39

Table 7.1647.4   GPS week: 1647   Day: 4   MJD: 55777.500

                                                         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 |     -31     -40     -76     -66     -1 |       6     16
emr   uuxuu |      56     -11     136     239     14 |      36     39
esa   uuuuu |     -16     -60     -11    -126      4 |      15     22
gfz   uuuuu |     -52     -10     -12    -212      0 |       2     15
grg   uuuux |     -71     -27     -13    -239     39 |      33     55
igr   xxxxx |      -9       8     103     -57     14 |       1     17
irf   xxxxx |      11       0     -71     -34     -5 |       7     16
jpl   uuuuu |     -52     -17     180      89     -6 |      31     33
mit   uuuuu |      11      24    -209     -86      1 |      22     26
ngs   uuuuu |      72      38     116     394      0 |      13     16
sio   uuuuu |      40     138     -68      -3    -16 |      38     40

Table 7.1647.5   GPS week: 1647   Day: 5   MJD: 55778.500

                                                         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      -5    -142      3 |       3     14
emr   uuxuu |      39     -46     327     176     11 |      36     40
esa   uuuuu |       8     -35      88      10      4 |      15     21
gfz   uuuuu |     -29      -7     -51     -70      6 |       2     15
grg   uuuux |     -10     -53    -137     -56     63 |      40     59
igr   xxxxx |     -21       6     -19     -13      6 |       2     17
irf   xxxxx |       5      -6     -35     -95     -4 |       6     15
jpl   uuuuu |     -78     -32     195     -38     -7 |      30     32
mit   uuuuu |     -12       6    -162    -229     -3 |      22     25
ngs   uuuuu |      37      55      51     290     -6 |      13     15
sio   uuuuu |      27     139     -56    -213    -10 |      34     37

Table 7.1647.6   GPS week: 1647   Day: 6   MJD: 55779.500

                                                         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 |     -10     -48      18      -5     10 |       4     15
emr   uuxuu |      69     -19     427      -9      8 |      39     44
esa   uuuuu |     -21     -19      35       5      1 |      16     24
gfz   uuuuu |     -65      27    -165     -85      1 |       4     17
grg   uuuux |      16     -33     -51      25    -35 |      52     71
igr   xxxxx |     -57      -4    -112     -25     10 |       4     19
irf   xxxxx |       1       9      -5     -48     -3 |       7     16
jpl   uuuuu |     -40     -62      40      31     12 |      30     32
mit   uuuuu |     -14      16    -109    -115     -7 |      23     27
ngs   uuuuu |      74      -9     161     210     -4 |      13     16
sio   uuuuu |      17     146      53    -149      4 |      34     36



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