[IGSREPORT-19190] Wk 1609 IGS Final Orbits

Jim Ray igs.acc at noaa.gov
Thu Nov 25 06:55:47 PST 2010


Author:  AC Coordinator / NOAA NGS

sum-file Version 2.0
Final IGS Orbit Combination - Week 1609   (Nov 07, 2010 - Nov 13, 2010)

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:

igs1609[0-6].sp3  IGS GPS ephemeris files in SP3 format.
igs1609[0-6].clk  IGS GPS satellite and station clocks in clock RINEX format.
igs1609[0-6].cls  IGS GPS clock combination summary report.
igs16097.erp      Earth Rotation Parameters (ERP) and their rates as well as
                  Universal Time (UT1-UTC) and Length Of Day (LOD) associated 
                  with IGS ephemerides.
igs16097.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 they either provide broadcast
    clocks (NGS) or clock corrections are not provided (SIO).  The clock
    information not used is still compared to combination for completeness.  
    The value of 999999.999999 microseconds, according to the sp3 format 
    convention, is used to signify that no clock solution is available and 
    therefore must not be used.

 2. Rapid (IGR) orbits/clocks are included in the combination for statistics only.
    Starting week 1582, a new solution from CNES/GRGS (GRG) is included with
    weight except for the clock and LOD combinations.

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

 4. The following clock solutions were excluded from the combination because they
    were biasing the combined clock solutions (clock shifts/outliers) but were
    kept for the RMS computation.  Duplicate entries can arise due to separate
    combination runs for the 30-s clocks ACs (listed first) and the 5-min clock
    ACs (listed second).
    
               Day | Centre | PRN/STA list
               ----+--------+---------------
                0  |  COD   | 22 22 MCM4 USNO DGAR DRAO FLIN MCM4 USNO
                0  |  EMR   | WTZR WTZR
                0  |  GFZ   | DGAR MATE RAMO RIOP
                0  |  GRG   | ADIS AMC2 DGAR
                0  |  JPL   | 32
                0  |  MIT   | 22 8 22 CAS1 DAV1 CAS1 DAV1 FLIN
                1  |  COD   | 22 22 BRUS BRUS
                1  |  EMR   | 22 8 22 WTZR WTZR
                1  |  GFZ   | MDVJ SCUB UNSA
                1  |  GRG   | ADIS AMC2 GUAT
                1  |  JPL   | 8 22 32 POTS
                1  |  MIT   | 8 CAS1 DAV1 BOR1 DAV1 GUAT
                2  |  COD   | 22 22 IISC NRMD
                2  |  EMR   | 8 WTZR WTZR
                2  |  GFZ   | ALRT CAS1 MDVJ METS PIMO QAQ1 UNSA
                2  |  GRG   | ADIS CAS1
                2  |  JPL   | 8 22 32 DGAR POTS
                2  |  MIT   | 22 8 22
                3  |  COD   | 22 18 22 HOB2 DGAR HOB2 RAMO SANT WILL
                3  |  EMR   | 8 WTZR HARB WES2 WTZR
                3  |  ESA   | HOB2
                3  |  GFZ   | GUAT KERG MATE MDVJ TIDB UNSA WILL YKRO
                3  |  GRG   | ADIS AMC2 DGAR POTS
                3  |  JPL   | 8 32 GUAT HARB
                3  |  MIT   | 4 22 4 8 22
                4  |  ALL   | 22 1 22
                4  |  COD   | SYDN COCO DGAR
                4  |  EMR   | 8 WTZR WTZR
                4  |  ESA   | KERG UNSA
                4  |  GFZ   | 17 HARB OUS2 QAQ1
                4  |  GRG   | ADIS AMC2 DGAR
                4  |  JPL   | 10 19 20 32
                4  |  MIT   | 8 HARB MDVJ
                5  |  ALL   | 1
                5  |  COD   | 22 22 CAS1 DGAR SOFI
                5  |  EMR   | WTZR WTZR
                5  |  ESA   | NYAL UNSA
                5  |  GFZ   | 8 CRO1 DAV1 DGAR KERG MAC1 MDVJ SALU THTI
                5  |  GRG   | 26 DGAR KIT3 OHI3 USN3
                5  |  JPL   | 10 16 19 20 32
                5  |  MIT   | 22 22 DAV1 DAV1 NYA1 TIDB
                6  |  ALL   | 1
                6  |  COD   | 22 22 GUAT CAS1 DGAR GUAT MATE
                6  |  EMR   | 8 8 WTZR WTZR
                6  |  ESA   | ALIC
                6  |  GFZ   | 9 DGAR GUAT PDEL
                6  |  GRG   | DGAR
                6  |  JPL   | 8 9 10 32
                6  |  MIT   | 22 9 22 MAW1 NYA1

 5. The following orbit solutions were excluded from the combination because 
    they were biasing the weighted average (generally indicated by long arc RMS).
    They were still used for statistics computation.
    
               Day | Centre | PRN list
               ----+--------+---------------
                6  |  GFZ   |   1

 6. Velocity changes were estimated to alleviate the effects of modeling
    problems, experienced by all centres,in the Long Arc (LA) process.
    
             Velocity changes per day and affected satellites:
    
               Day |  0 |  1 |  2 |  3 |  4 |  5 |  6 |
           --------+----+----+----+----+----+----+----+
           PRN G09 |    |    |    |    |    |  1 |    |

 7. Starting on 5-Nov-2006 (GPS Week 1400, day 0, MJD 54044) 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.

 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  |     .3    1.4    -.3      -3    -26    -33    -.30
       EMR  |    1.7    7.5   -2.5      23     -9     -1    -.06
       ESA  |    2.9    2.9   -6.0      90    -56    -48    -.14
       GFZ  |     .2    1.5     .7      29    -17    -35    -.12
       GRG  |   -3.2    8.4     .6      36     49    -91     .16
       JPL  |   -6.9    6.3    1.9      31    -12    -32    -.16
       MIT  |   -4.8     .8    -.2      27     34    -13    -.29
       NGS  |    -.3    2.5    -.3      41     -7      1    -.33
       SIO  |    -.1    4.1  -15.1      48    -49    -79     .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 on 5-Nov-2006 (GPS Week 1400, day 0, MJD 54044) the absolute antenna
    model is introduced (IGSMAIL #5272). The antenna phase center offsets and
    phase center variations are given in the file:
        ftp://igscb.jpl.nasa.gov/pub/station/general/igs05.atx

    
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 1.1609.a). It also displays the computed satellite
position sigmas for the combined orbits (table 1.1609.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 2.1609.[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 3.1609.[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 5.1609.0-6).

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 1609 summary.                       (Nov 07, 2010 - Nov 13, 2010)

Table 1.1609.a   GPS week: 1609   MJD: 55507.000-55513.000

         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  229|    0     0     2    71    47   -13  -.20   10    9 |    -153    -114     16     75
        |    1     0     1    14    22    19   .02           |     581     795
emr   89|    1     1     0    12    17    30   .45   19   19 |   -1165      91     19     99
        |    2     1     3    23    27    17   .02           |     521    1179
esa  145|    1    -1     0   -96     6   -45   .27   10   10 |     -87    -258     15    122
        |    0     0     1    26    30    19   .03           |    1609    2268
gfz  187|   -1     0    -1    26    26    20  -.19   11   10 |     200    -166     24    112
        |    0     0     1    48    59     9   .05           |     317     397
grg  133|    0     1    -2   -15  -100   -23   .68   18   16 |   -2117    -260     59    238
        |    0     1     3    20    35    20   .04           |    5496     753
igr  n/a|    0     0     1    70   -28    20  -.05    6    5 |   20237    -763     19     83
        |    0     0     0    30    29    19   .03           |    1926    1330
jpl  170|    1     0     0    11    36    23   .48   21   20 |    1508     -28     21    155
        |    1     1     1     7    13    56   .02           |     624    1227
mit  263|    0    -1    -1     7   -95    29  -.43   13   11 |     -46    -254     22    151
        |    0     0     1    16    20    10   .01           |     413     747
ngs  207|    0    -1     0   -24   -15    43  -.19   11    9 |    -167    -167   2311   3751
        |    1     1     0    30    40    19   .07           |     580     764
sio  249|    0     3     0     1   101   -84  -.18   21   19 |     ---     ---    ---    ---
        |    0     1     1    25    32    17   .02           |     ---     ---


Table 1.1609.b   GPS week : 1609   MJD: 55507.000-55513.000   

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



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 2.1609.0   GPS week: 1609   Day: 0   MJD: 55507.000                            

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  229|    1     0     1    99    87   -28  -.23   11   11 |     -96    -383     14     64
        |                    -11   -92                       |
emr   89|    1     1    -4    28    72    24   .43   19   19 |   -1438    -146     26    103
        |                    -28  -113                       |
esa  145|    0    -2     0   -66    24   -45   .29   11   11 |    -136    1525     17    128
        |                      2     8                       |
gfz  187|    0     1     0   -66   -76    17  -.21   10   10 |     159      19     24    105
        |                    -63   -15                       |
grg  133|    0     2     2    16  -108    -6   .68   16   15 |     220    -651     69    230
        |                     14   -61                       |
igr  n/a|    0     0     1    87    -7   -15  -.10    5    4 |   22954   -1266     22     72
        |                    -43   -21                       |
jpl  170|    2     0     0    16    48    61   .44   21   19 |    2024    -299     23    144
        |                     -3   -61                       |
mit  263|    0    -1    -2   -26  -106    31  -.46   13   11 |     184    -714     18    129
        |                     13    34                       |
ngs  207|   -2    -1     1    20    50    19  -.13   11   10 |    -240    -270   2217   3850
        |                    -75   -45                       |
sio  249|    0     1    -1   -51    56   -83  -.20   22   18 |     ---     ---    ---    ---
        |                      6   -12                       |

Table 2.1609.1   GPS week: 1609   Day: 1   MJD: 55508.000                            

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  229|    0     0     4    74    48   -10  -.22   12   10 |    -359     641     17     77
        |                     21   -25                       |
emr   89|    2     0    -2   -29    -1    16   .42   19   19 |   -1578     557     22     87
        |                     17   -47                       |
esa  145|    1     0     0   -87   -30   -15   .25   11   11 |   -1057    1593     13    109
        |                     15    17                       |
gfz  187|   -1     1    -1    66    98    24  -.24   11   10 |     114      -1     23    108
        |                    -58     5                       |
grg  133|    0     3     1   -43  -108    -8   .71   18   16 |    -359     282     58    219
        |                     82   -22                       |
igr  n/a|    1     0     1    63   -70    29  -.05    5    5 |   21686    -335     24     96
        |                    -25     4                       |
jpl  170|    2     0    -2    -4    12   -15   .49   22   22 |    1722     256     22    130
        |                     17   -54                       |
mit  263|    0     0    -2    16   -66    30  -.44   13   11 |    -532     376     25    145
        |                      7    38                       |
ngs  207|   -1    -3     1   -60   -79    23  -.09   12   10 |    -325     476   2327   4043
        |                     48    98                       |
sio  249|   -1     4    -1     9   149   -68  -.16   21   19 |     ---     ---    ---    ---
        |                    -20   -44                       |

Table 2.1609.2   GPS week: 1609   Day: 2   MJD: 55509.000                            

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  229|    0     0     3    55    56   -35  -.21   10    9 |   -1345    1315     14     71
        |                     42   -50                       |
emr   89|   -1     0    -2     0    -4    12   .43   19   19 |   -1007     313     18    108
        |                      2   -35                       |
esa  145|    1    -1     0   -75   -15   -27   .29   11   11 |   -3205     385     12    120
        |                     -1    39                       |
gfz  187|   -1     1    -1    59    18    10  -.11   12   11 |    -372     475     22    103
        |                    -45   -33                       |
grg  133|    0     2    -2   -29   -86   -59   .63   19   16 |    -822     944     57    225
        |                     44   -55                       |
igr  n/a|    1    -1     1    47   -48    26  -.05    6    6 |   21424    -689     17     67
        |                    -13   -43                       |
jpl  170|    0    -1     0    11    36     9   .46   22   20 |    1977      91     20    134
        |                     -5  -121                       |
mit  263|    0    -1    -2     1   -90    45  -.41   13   11 |    -593     788     23    172
        |                      8    34                       |
ngs  207|    1    -1     0   -51    -4    55  -.18   11    9 |   -1365    1240   2716   4188
        |                    -38   -20                       |
sio  249|   -1     3     0     0   122   -63  -.15   21   20 |     ---     ---    ---    ---
        |                    -21   -41                       |

Table 2.1609.3   GPS week: 1609   Day: 3   MJD: 55510.000                            

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  229|    0     0     4    73    13     9  -.19   11    9 |      73    -551     18     72
        |                     13   -44                       |
emr   89|    3     2     1    38     0    40   .44   19   19 |    -557   -1872     16     85
        |                    -32   -52                       |
esa  145|    1    -1    -2   -85    51   -51   .32    9    9 |    1054   -2945     16    139
        |                     30    -5                       |
gfz  187|   -2     1    -2    22    55    28  -.19   10    9 |     138    -122     26    109
        |                    -59   -62                       |
grg  133|    0     2    -5    -6  -128   -22   .62   19   18 |  -14545    -851     55    262
        |                     -6   -83                       |
igr  n/a|    0     0     0   133   -51     1  -.03    7    5 |   20672   -2869     18     68
        |                    -96     0                       |
jpl  170|   -1     0     0    19    29    38   .50   22   22 |    1868   -2031     20    131
        |                     38  -205                       |
mit  263|    0    -2     0    11  -127    33  -.43   13   12 |     458    -931     23    186
        |                     16    50                       |
ngs  207|    0    -2     1   -30    -9    30  -.24   10    9 |     100    -667   2002   3589
        |                    -60     2                       |
sio  249|    0     4     2     0    67   -96  -.17   20   20 |     ---     ---    ---    ---
        |                    -30    -8                       |

Table 2.1609.4   GPS week: 1609   Day: 4   MJD: 55511.000                            

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  229|   -1     0     2    69    29   -11  -.21   10    9 |      -7    -246     17     83
        |                     25   -26                       |
emr   89|    4     2     4    26     0    63   .46   19   19 |   -1903    -893     15     79
        |                    -15   -16                       |
esa  145|    0    -1     0   -94     0   -43   .26   10    9 |    1531   -3250     15    112
        |                    -11    13                       |
gfz  187|   -2     0    -1    20    73    29  -.23   12   10 |     257    -410     25    118
        |                    -41   -40                       |
grg  133|    0     1    -4   -30  -112   -31   .70   17   16 |     442   -1216     46    210
        |                     44   -45                       |
igr  n/a|    0     0     0    47   -10    36  -.06    5    5 |   18395   -1747     17     64
        |                    -73   -30                       |
jpl  170|    2    -1     1     8    52   -33   .49   19   18 |     362    -973     20    193
        |                    -45   -78                       |
mit  263|    0    -3    -1    22   -78    33  -.44   12   10 |     317   -1131     19    140
        |                     22    46                       |
ngs  207|    0     0     0   -31   -37    41  -.17   10    7 |     116    -336   2204   3328
        |                     13    58                       |
sio  249|    0     2     2    27   119   -70  -.21   20   20 |     ---     ---    ---    ---
        |                    -27   -23                       |

Table 2.1609.5   GPS week: 1609   Day: 5   MJD: 55512.000                            

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  229|   -1     0     0    67    49    13  -.17   11    9 |     227    -757     19     78
        |                     -9   -20                       |
emr   89|    0     1     2     2    22    29   .49   19   19 |   -1182    1538     21    126
        |                      3   -56                       |
esa  145|    1    -1     1  -123    33   -69   .22   10   10 |     525   -1388     16    117
        |                     13    25                       |
gfz  187|    0     0    -4    77    32    25  -.22   11    9 |     470    -337     25    124
        |                    -58   -24                       |
grg  133|    0     1     0   -19  -133     0   .72   16   14 |      58     171     64    292
        |                     44   -29                       |
igr  n/a|    0     0     0    61   -20    37  -.03    6    5 |   18207     825     21    131
        |                    -52    -2                       |
jpl  170|    0     1     1    13    33   -23   .48   18   17 |     930    1462     24    227
        |                    -61   -58                       |
mit  263|    0    -2    -2    20   -91    20  -.43   12   10 |    -238     349     25    150
        |                     16    37                       |
ngs  207|   -1    -1     1   -35   -28    63  -.27   10    7 |     167    -760   2377   3747
        |                   -100   -17                       |
sio  249|    0     4     1     9   102  -105  -.20   20   20 |     ---     ---    ---    ---
        |                    -17   -18                       |

Table 2.1609.6   GPS week: 1609   Day: 6   MJD: 55513.000                            

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  229|   -1     0     1    61    47   -31  -.19    9    8 |     436    -817     19     84
        |                     -3   -65                       |
emr   89|    0     0     0    24    30    24   .46   18   18 |    -494    1142     18    105
        |                    -17   -44                       |
esa  145|    1    -1     1  -139   -16   -64   .29   11   10 |     678    2273     18    134
        |                     51    52                       |
gfz  187|    0     0    -2     8   -16     5  -.13   11   10 |     636    -787     27    120
        |                    -62   -10                       |
grg  133|    0     0    -4     1   -27   -37   .69   20   18 |     186    -499     68    234
        |                     24  -137                       |
igr  n/a|    0     0     0    57    11    23  -.01    6    5 |   18322     738     20     84
        |                    -49    -6                       |
jpl  170|    3     3     1    16    42   124   .50   20   20 |    1679    1295     20    129
        |                     50   -35                       |
mit  263|    0    -2    -2     4  -105    12  -.43   14   11 |      81    -521     22    135
        |                     17    39                       |
ngs  207|    0    -1     0    13     1    69  -.25   11    8 |     373    -856   2339   3518
        |                   -126   -45                       |
sio  249|    0     3     0    18    91  -105  -.19   21   20 |     ---     ---    ---    ---
        |                    -20   -24                       |

       
       
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 3.1609.0   GPS week: 1609   Day: 0   MJD: 55507.000                            

        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  |    9  ---  ---  ---  ---  202  ---  ---  ---  ---    0 |    55  ---  ---  ---  ---  117  ---  ---  ---  ---    51
   2  |   12   16    8   13   16    3   26   10    8   28    5 |    26   30   27   23   27   25   35   27   26   32    25
   3  |    8   12   11    7   12    7   14   11   11   34    4 |    20   28   26   24   32   20   28   22   21   31    21
   4  |   12   16    9    9   12    5   12   13   11   22    4 |    15   22   17   22   17   16   17   24   14   17    13
   5  |   11   23    7    7   21    4   21   13    8   15    4 |    51   50   51   57   60   49   46   51   47   48    50
   6  |    8   10   10    9   11    5   13    8   11   18    3 |    21   29   26   26   30   22   28   24   19   24    24
   7E |   10   19   13   10   22    2   21   11    9   12    4 |    17   27   20   17   24   15   27   20   16   21    16
   8E |   14   27   11   11   17    4   18   18   21   17    6 |    24   37   22   28   25   25   29   35   31   31    25
   9E |   13   22   12   11   22    5   19   21   19   35    6 |   125  133  121  120  136  124  129  121  122  132   123
  10  |   13   15    8   14   13    4   17   13   11   28    5 |    27   33   28   27   33   27   31   32   29   36    28
  11  |   11   16   12    8   16    5   18    8    9   11    4 |    21   38   27   27   43   21   33   22   23   24    24
  12  |    9   20   12   10   15    3   25   13   11   19    5 |    23   32   28   30   32   24   32   29   22   25    24
  13  |   12   19   13   11   23    3   26   10    7   14    5 |    20   32   23   26   40   22   30   22   22   16    21
  14  |   12   21   10    9   15    6   26   12   10   20    5 |    18   28   25   26   31   20   26   24   20   27    19
  15  |   12   25   13    9   18    4   24   16   11   18    5 |    20   31   24   24   35   21   28   22   20   19    20
  16  |    8   24   11    8   16    8   29   23   13   20    5 |    18   30   22   21   28   19   31   23   19   17    18
  17  |   12   14    9   13   17    6   15   13   11   32    5 |    33   33   34   35   32   33   34   38   34   39    32
  18  |   11   27   11   12   17    3   23   11   11   17    5 |    56   56   62   57   70   56   55   57   52   52    55
  19  |    9   12   10    7   12    4   13   13    9   27    4 |    30   34   32   29   33   30   32   31   30   29    30
  20  |   18   22   11    8   17    5   22   12    8   15    5 |    46   48   45   40   41   44   47   43   44   43    43
  21  |   13   19   12    8   17    4   21   11   10   10    4 |    29   32   29   22   34   26   34   25   23   24    23
  22  |    8   21   12    9   17    5   21    9   12   17    4 |    25   27   26   27   32   23   24   23   20   28    21
  23  |   10   27   10   12   16    5   29   11    9   20    5 |    16   36   26   24   30   20   34   19   17   17    19
  24  |   13   17   11    8   13    5   16   19   10   25    5 |    21   31   26   23   24   23   29   18   20   39    22
 X25  |   18  ---   11   14   19    8  ---   10   11  ---    6 |    24  ---   24   32   27   22  ---   24   22  ---    22
  26  |    9   12    7   10   12    4   11   13    9   25    4 |    18   20   18   19   24   17   17   21   17   28    17
 X27E |   13   19   14   10   23    8  ---   16   15   27    6 |    95   98   84   91  104   91  ---   92   96   87    90
  28  |   10   20    9   10   15    6   26   13   13   27    5 |    23   29   24   27   31   22   30   28   23   29    21
 X29  |    9   13   10    9   14    4   18   11    8  ---    4 |    27   31   29   27   29   27   30   26   26  ---    25
  30  |   11   12    9   10   12    4   18   10   12   15    4 |    24   26   26   28   31   24   25   23   24   18    24
  31E |   11   19   11    9   20    6   27   11    9   12    5 |    19   34   24   20   32   21   31   22   18   22    20
  32  |   13   21   10    8   16    4   22   15   10   29    5 |    20   29   26   25   25   23   35   27   21   43    23
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |   11   19   11   10   16    5   21   13   11   22      |T   31   38   32   33   38   33   34   32   30   34    30
 WRMS |   11   19   11   10   15    4   19   11   10   18      |NE  23   30   25   25   30   27   29   24   22   26    23
 MEDI |   11   19   11    9   16    5   21   12   11   20      |MD  23   31   26   27   32   23   31   24   22   28    23

Table 3.1609.1   GPS week: 1609   Day: 1   MJD: 55508.000                            

        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  |    6  ---  ---  ---  ---  179  ---  ---  ---  ---    0 |    60  ---  ---  ---  ---  152  ---  ---  ---  ---    63
   2  |   11   19   12   17   19    5   25   11   12   24    5 |    22   32   28   15   32   24   35   24   23   27    22
   3  |    8   10    6    7   11    4   14   10   14   34    4 |    15   24   24   19   27   19   27   15   27   22    19
   4  |   12   14   12    7   16    6   12   14    9   18    4 |    18   23   26   18   26   22   22   23   18   18    19
   5  |    8   23    7   12   18    6   20   15   15   17    5 |    35   37   37   34   43   34   34   35   28   33    33
   6  |    6   11    8   11   11    5   14    8   15   17    4 |    18   24   22   25   24   21   26   21   23   18    20
   7E |    9   20   10   11   16    6   23   12   13   11    4 |    18   32   28   17   31   22   31   20   19   19    20
   8E |   15   20   12   11   22    5   21   18   19   16    6 |    26   35   31   26   31   26   31   34   29   27    26
   9E |   15   23   17   14   19   10   20   17   20   27    6 |   105  112  107  102  112  103  108  101  101  103   104
  10  |   11   17   12   10   17    5   15   12   12   26    5 |    30   36   34   30   34   30   35   31   30   36    30
  11  |   10   14   12    8   17    3   21    9   11   11    4 |    19   39   30   21   46   25   37   19   25   25    25
  12  |   12   23   10    9   16    5   28   12   15   18    5 |    18   34   27   22   30   23   35   25   22   20    22
  13  |   10   18   11   11   24    4   25   10   10   14    5 |    19   32   26   19   38   22   33   20   21   14    21
  14  |    9   22   14    8   14    3   29   12    8   22    5 |    16   29   26   18   27   17   30   18   14   21    17
  15  |   10   24   13    9   17    4   26   12   12   19    5 |    16   30   23   17   32   19   30   18   18   16    17
  16  |    9   30   11   10   17    4   26   11   12   19    5 |    14   33   21   17   29   19   33   15   20   14    17
  17  |   12   15    7   12   15    6   20   11   12   30    5 |    21   25   27   22   23   23   25   22   27   21    22
  18  |   10   22   12   13   19    4   23   14   12   16    5 |    49   53   59   54   65   54   53   48   51   45    51
  19  |    9   13    6    7   10    4   12   10    9   24    3 |    19   26   23   19   25   20   25   20   21   17    19
  20E |   24   19    9    6   30    3   24   16    7   14    6 |    83   86   81   79   98   80   81   82   81   75    81
  21  |   11   23    8   11   22    4   18    9   10   10    4 |    21   33   25   17   36   22   30   19   18   20    19
  22  |    6   19   16   10   17    3   22    8   10   17    4 |    20   24   27   24   27   19   24   19   21   17    18
  23  |   10   23    8   11   18    5   28   14   10   21    5 |    19   36   29   20   34   24   37   20   20   16    22
  24  |   12   14   10    9   14    4   17   16   15   23    5 |    23   32   30   24   31   27   31   22   27   39    25
 X25  |   14  ---    9    9   15    5  ---    9   14  ---    5 |    19  ---   22   16   27   18  ---   19   21  ---    17
  26  |    9   17    7   10   12    6   14   12   13   26    4 |    13   23   20   16   23   18   21   17   20   30    16
  27E |   13   19   13   12   21   10   18   13   14   25    5 |    73   74   78   72   68   76   34   77   78   67    75
  28  |   11   17   14   15   17    6   31   14   11   25    5 |    19   29   27   26   31   21   31   25   24   27    21
 X29  |   11   14   13   12   14    7   18   11   15  ---    5 |    16   25   29   15   20   20   25   19   22  ---    19
  30  |   11   12   15   10   13    3   16   11   11   15    4 |    19   24   27   21   28   20   21   19   21   17    20
  31E |   15   22   15   11   20    6   24   15   12   13    5 |    22   36   24   19   32   21   33   17   24   19    22
  32  |   14   19    9    9   17    4   21   14   10   26    5 |    18   28   27   19   28   22   31   24   25   39    21
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |   12   19   11   11   18    5   22   13   12   21      |T   28   36   33   27   37   33   34   28   29   29    29
 WRMS |   10   19   11   10   16    5   22   11   10   19      |NE  20   29   25   19   29   27   29   20   21   22    21
 MEDI |   11   19   11   10   17    5   21   12   12   19      |MD  19   32   27   20   31   22   31   20   23   21    21

Table 3.1609.2   GPS week: 1609   Day: 2   MJD: 55509.000                            

        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  |    6  ---  ---  ---  ---  173  ---  ---  ---  ---    0 |    39  ---  ---  ---  ---  193  ---  ---  ---  ---    39
   2  |   10   22   11   12   18    4   24   12    5   25    5 |    23   34   26   18   26   22   36   25   21   27    23
   3  |    6    9   11    8   12    5   14    8   10   34    4 |    23   32   35   24   31   26   34   26   29   28    27
   4  |   10   16   12    7   14    6   11   12    8   14    4 |    12   19   19   14   16   15   17   20   17   16    14
   5  |    8   18    5    7   24    6   22   12    8   17    4 |    61   54   59   57   66   55   55   56   53   52    56
   6  |    5    9   11   12   11    7   14    7   10   17    3 |    16   24   24   21   22   17   25   19   16   16    18
  X7E |    8   20    9   11  ---    8   22   11   13   11    4 |    15   32   24   21  ---   21   31   20   24   21    20
   8E |   14   19   11   13   23    5   18   20   15   17    5 |    14   28   16   21   23   19   24   31   25   21    16
   9E |   13   21   13   16   25   11   22   16   18   22    6 |    75   82   79   71   81   77   86   75   81   76    77
  10  |   10   14    8   13   15    5   15   11    8   25    4 |    29   38   32   31   35   31   37   32   31   39    31
  11  |    8   14    9    9   18    5   21    8   12   12    4 |    16   35   23   19   40   21   36   18   27   24    22
  12  |    9   21   16   11   21    5   27   14   13   16    5 |    20   32   31   23   32   22   36   26   23   20    22
  13  |    7   19    8   14   25    6   22    7    8   12    4 |    17   30   22   26   37   24   32   18   22   14    20
  14  |    9   18   14   11   19    7   30    9    8   21    5 |    15   25   26   23   25   17   28   19   23   22    18
  15  |    8   24   11   11   19    5   24   13    9   22    5 |    15   29   23   21   31   17   27   18   15   16    16
  16  |    8   26    9   12   14    5   29   10   13   20    5 |    14   30   21   18   26   16   32   16   19   16    17
  17  |   11   12   10   16   17    5   17   14   11   25    5 |    21   23   22   29   20   22   23   23   28   24    22
  18  |    9   28   11   14   28    8   28   11    9   20    5 |    80   78   87   80   93   75   78   78   78   75    79
  19  |    6   12    7   12   12    4   16    8    8   23    3 |    20   24   24   23   21   21   28   21   22   19    20
 X20E |   10   26    9   11  ---    6   22   15   10   14    5 |    28   43   38   32  ---   35   39   34   38   32    33
  21  |    9   25   13    9   18    6   22   11   11   12    5 |    19   34   22   18   32   20   31   17   17   20    18
  22  |    7   20   15   15   24    5   25   10    9   17    5 |    24   24   27   24   34   19   24   23   24   18    21
  23  |    8   26   12   13   22    6   29   14    8   21    5 |    15   33   25   22   31   21   35   16   20   14    18
  24  |   11   16   11    9   15    5   15    9   13   23    4 |    16   25   24   17   22   20   29   17   19   31    17
 X25  |   15  ---   14   11   17    8  ---   13   13  ---    6 |    24  ---   24   22   25   20  ---   20   23  ---    21
  26  |    8   13    8    8   16    6   15   14   11   26    4 |    15   22   20   17   23   17   23   21   17   31    17
  27E |   19   17    9   13   23    9   23   14   15   33    6 |    79   81   80   81   83   80   52   81   85   87    80
  28  |   10   19    9   13   20    6   25   14   13   23    5 |    15   26   20   22   29   18   28   23   20   24    17
 X29  |    8   15    7    6   13   10   17   13    6  ---    4 |    19   29   29   24   24   24   27   23   28  ---    24
  30  |   11   15   13    8   13    6   15    9    9   12    4 |    23   27   28   27   29   26   30   27   28   26    26
  31E |    9   15   12   11   19    7   26   21   14   16    5 |    14   28   21   20   28   20   33   23   20   21    17
  32  |   12   19    8    9   21    5   21   18   10   23    5 |    17   29   24   18   28   22   36   22   21   36    20
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |   10   19   11   12   19    6   22   13   11   21      |T   26   35   31   28   34   32   35   28   29   29    27
 WRMS |    9   19   11   11   16    6   20   11    9   20      |NE  18   28   24   21   27   28   29   20   21   22    20
 MEDI |    9   18   11   11   18    6   22   12   10   20      |MD  19   29   24   22   29   21   31   23   23   24    20

Table 3.1609.3   GPS week: 1609   Day: 3   MJD: 55510.000                            

        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  |    6  ---  ---  ---  ---  411  ---  ---  ---  ---    0 |    35  ---  ---  ---  ---  335  ---  ---  ---  ---    34
   2  |   11   24    9   16   17    6   26    9    8   22    5 |    24   37   23   16   25   22   38   24   24   31    22
   3  |    5   11    7    9   16    5   14    9    8   33    4 |    19   26   25   20   31   21   29   19   23   25    21
   4  |   10   17   10    7   16    3   14   15   11   13    4 |     8   16   17   13   20   10   19   20   14   15    10
   5  |   15   21    8   11   16    7   20   17    9   14    5 |   111  109  110  112  110  107  109  110  109  111   110
   6  |    5    9    7    8   16    5   15   10    9   18    3 |    21   25   28   25   33   24   27   24   24   22    25
   7E |   10   20    8   10   17    4   22   12    8   10    4 |    20   33   27   22   31   21   35   22   27   22    22
   8E |   12   18   10   10   16    4   18   23   16   17    5 |    30   36   33   31   31   30   39   39   37   31    31
   9E |   10   22    8   11   30    9   17   16   14   23    5 |   119  128  123  116  130  120  127  115  113  120   119
  10  |   13   16    8   11   18    5   17   11   11   21    4 |    37   42   36   33   43   36   44   40   34   41    36
  11  |    7   14    6    5   18    4   21    9    9   12    3 |    18   33   26   20   42   21   36   18   20   21    22
  12  |    9   21    8   11   20    4   30   17   12   16    5 |    17   30   22   22   28   18   36   21   22   18    17
  13  |    9   22    8    8   22    6   28    7   10   11    4 |    14   33   20   14   35   17   35   18   20   11    16
  14  |    6   20    6   12   17    4   29   12   10   23    5 |    13   26   15   20   26   15   29   19   14   21    13
  15  |   12   23   14    8   23    5   25   13   10   21    5 |    19   29   20   16   35   17   30   18   18   16    14
  16  |    8   25   11    9   15    6   31   10   11   21    5 |    14   29   22   17   26   16   31   15   17   18    16
  17  |   11   14    7   13   20    5   19   15   13   23    5 |    26   27   24   29   26   25   31   27   33   27    25
  18  |   19   25    8   12   21   29   27   14   13   27    6 |   116  117  114  119  119  100  111  115  107  114   113
  19  |    7   13    7    9   14    5   13    9    6   24    3 |    26   29   27   22   27   25   30   28   24   24    25
  20E |    8   25    8    8   19    4   25   12    8   12    4 |    18   30   25   15   29   19   33   20   19   19    18
  21  |    9   20    6    8   19    6   21   10   10   14    4 |    23   30   22   17   31   21   32   17   20   22    19
  22  |   13   18   11   12   17    7   24   11    6   14    4 |    28   40   34   35   39   31   36   35   34   35    32
  23  |    7   24    6    9   21    6   31   14   11   19    5 |    13   34   23   14   30   16   36   18   17   12    15
  24  |   10   15    8    7   20    3   16    9    8   23    4 |    20   26   25   22   30   24   34   21   23   35    22
 X25  |   17  ---    7    8   19    6  ---   14   15  ---    6 |    18  ---   17   12   27   15  ---   18   20  ---    14
  26  |    7   13    6   11   16    5   13   13   10   25    4 |    13   20   15   14   22   13   21   18   20   27    15
  27  |   19   22   13    9   21    5   16   14    7   29    5 |    83   99   94   90   94   91   71   92   96   87    91
  28  |   10   19   10   13   19    6   28   16    9   23    5 |    15   26   20   21   28   16   30   23   19   21    15
 X29  |    7   12    7    8   14    4   15   12   10  ---    3 |    24   26   27   24   26   22   29   23   21  ---    22
  30  |    9   19    8    8   12    4   16   10   10   15    4 |    28   35   28   34   36   31   34   32   31   34    29
  31E |   11   18   13   13   22    7   29   18   12   21    5 |    17   30   24   18   31   20   36   17   21   19    19
  32  |   15   22    9    9   18    3   22   16   10   22    5 |    23   29   27   21   29   22   36   25   25   36    23
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |   11   19    9   10   19    7   22   13   10   20      |T   31   41   35   32   40   41   42   33   33   35    32
 WRMS |    9   19    9    9   18    5   22   12    9   20      |NE  19   28   22   19   29   33   31   21   21   22    19
 MEDI |   10   19    8    9   18    5   21   12   10   21      |MD  20   30   25   21   31   21   34   22   23   24    22

Table 3.1609.4   GPS week: 1609   Day: 4   MJD: 55511.000                            

        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  |   21  ---  ---   34  ---  187  ---  ---  ---  ---   27 |    36  ---  ---   33  ---  132  ---  ---  ---  ---    26
   2  |    9   24   10   15   15    4   22    9    8   22    5 |    22   36   25   14   25   23   31   22   23   28    21
   3  |    9   15   14    8   15    5   14   20    7   35    5 |    50   50   50   47   52   46   51   49   51   41    47
   4  |   10   17    7    8   13    3   10   12    6   16    3 |    17   19   18   15   23   16   18   20   14   16    14
   5E |    8   17   10   10   13    4   17   11    8   11    4 |    51   55   53   51   51   53   52   52   51   51    50
   6  |    4   13   13   12   10    4   14   11    8   14    3 |    20   25   21   24   27   20   26   25   24   19    22
   7E |    8   16    9   11   17    5   16   10   10   11    4 |    28   34   31   32   38   28   36   27   29   28    29
   8E |   15   21    9   15   16    3   18   22   18   16    6 |    22   30   22   23   24   24   29   38   31   27    24
   9E |   22   19    6   13   20   10   17   14   12   25    5 |   103  109  102  100  115  101  106  103   99  103   102
  10E |   13   17    8   15   19    5   14   11   14   29    5 |    64   67   67   61   70   62   70   66   61   67    64
  11  |    6   15    9    8   16    3   18    7    6   15    3 |    20   36   25   19   42   22   36   18   18   21    22
  12  |    7   22   11   11   18    3   25   16    9   18    5 |    15   28   23   20   30   17   30   21   16   16    16
  13  |    7   20   11    6   19    3   21    6    8   10    4 |    17   31   27   17   37   18   32   20   17   14    19
  14  |    8   19   11    9   13    4   23    9    7   21    4 |    13   27   22   18   26   15   27   17   15   21    15
  15  |    9   22   14    9   22    4   26   12    8   22    5 |    15   30   19   21   37   18   31   19   16   16    17
  16  |    6   24   12    8   16    6   24    9   13   20    5 |    12   30   19   13   27   12   27   14   17   15    13
  17  |   11   15    7   33   17    4   16   15    9   24    6 |    26   26   24   44   27   26   27   30   27   24    25
  18E |    9   24   12   12   21    8   23    8   10   21    5 |    64   72   69   65   70   66   69   63   63   60    65
  19  |    6   14    7   10   11    4   10    7    7   22    3 |    24   30   28   25   27   22   32   24   24   26    25
  20E |    7   22    9    8   18    3   22   10    8   13    4 |    16   27   24   18   29   19   27   19   17   18    17
  21  |    8   19    7    8   19    5   20   10    8   14    4 |    23   31   22   20   32   20   31   18   21   23    20
  22E |    8   22    9   13   17    6   19   10    9   13    4 |    24   30   23   21   26   20   26   24   21   24    20
  23  |    8   27   10    8   15    4   27   12    7   18    4 |    16   36   27   17   32   19   34   21   16   16    18
  24  |    9   21    5   10   16    4   13    8    8   25    4 |    17   26   22   17   24   17   27   17   15   33    18
 X25  |   17  ---    9    9   17    6  ---   13   12  ---    5 |    17  ---   19   15   27   14  ---   17   19  ---    14
  26  |    7   13    7    7   14    4   12   13    7   26    4 |    17   25   22   20   28   19   24   23   17   31    19
  27  |    9   16    6   17   20    6   15   13   10   29    5 |    41   47   43   37   47   43   29   41   44   31    41
  28  |   12   22    6   14   18    4   24   16   10   21    5 |    16   28   18   22   30   17   28   26   24   23    17
 X29  |    9   15   13   33   15    4   14   12    9  ---    6 |    20   26   25   27   26   20   26   22   20  ---    20
  30  |    9   15    9    9   12    4   14    7    9   12    3 |    20   26   21   19   27   17   24   17   16   15    18
  31E |    7   16   11   13   17   10   22   12   12   17    4 |    19   30   24   17   33   17   30   20   24   22    20
  32  |   12   22   10    8   17    4   20   15    9   22    5 |    20   27   27   21   26   21   31   25   23   36    22
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |   10   19   10   12   17    5   19   12   10   20      |T   27   36   31   28   36   30   35   29   28   29    27
 WRMS |    9   19    9   10   16    5   18   10    7   20      |NE  20   29   24   22   30   25   29   22   20   22    20
 MEDI |    9   19    9   10   17    4   18   11    9   20      |MD  20   30   24   21   29   20   30   22   21   24    20

Table 3.1609.5   GPS week: 1609   Day: 5   MJD: 55512.000                            

        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  |   22  ---  ---   25  ---  140  ---  ---  ---  ---   24 |    38  ---  ---   57  ---  131  ---  ---  ---  ---    36
   2  |    9   22    8    9   12    5   21    9    9   22    4 |    14   30   20   16   25   16   28   16   20   24    17
   3  |    8   11   12   10   13    5   12   11   10   33    4 |    28   32   29   26   31   28   33   34   31   38    29
   4  |   11   14   10    7    9    5   10   12    9   18    3 |    13   16   18   13   15   13   16   18   17   13    13
   5E |    9   19   11   10   16    4   15   12   11    8    4 |    25   31   24   26   28   25   28   30   28   27    25
   6  |    5   11   10   11   11    5   11    8    9   15    3 |    15   18   14   19   19   15   20   19   18   16    15
   7E |    8   19   13    9   14    4   17   12    7   12    4 |    22   28   24   23   28   19   25   21   20   21    19
   8E |   17   17   11   13   14    5   16   20   15   15    5 |    29   34   33   29   30   29   35   40   36   32    30
   9E |   25   20   10   11   23    8   17   15   11   27    6 |   137  143  133  131  147  134  139  135  133  134   135
  10E |   14   19    9   11   17    6   14   13   12   24    5 |    24   39   32   29   39   25   35   31   30   36    28
  11  |    9   16    8    8   15    4   14    7    5   15    3 |    19   38   24   21   40   22   37   17   19   21    23
  12  |    9   22   13   15   15    7   26   21   13   18    5 |    13   30   22   25   32   17   29   22   24   17    18
  13  |    7   20    9    7   20    3   20    7    9   11    4 |    14   32   20   15   32   16   30   18   20   13    16
  14  |    7   19    9   12   15    6   23   10    8   20    4 |    13   26   20   17   24   13   26   15   17   22    15
  15  |   10   25   11    7   16    6   27   13   10   20    5 |    15   29   16   12   31   17   29   18   22   19    15
  16  |    8   26   10   12   19    6   21   11   10   21    5 |    11   32   15   14   26   11   26   14   17   16    12
  17  |   10   14    9   14   16    7   14   16   11   26    5 |    23   21   23   25   21   20   23   28   28   21    21
  18E |   10   25   13   14   18   11   28   10   11   25    5 |    56   65   58   58   60   58   64   56   59   49    57
  19  |    6   12    9   10   12    4   10    9   11   24    3 |    14   23   18   17   18   16   22   18   20   23    16
  20E |    7   18    8   11   20    3   19   10    9   11    4 |    13   25   19   15   26   16   24   19   21   17    15
  21  |    7   21    7    9   18    5   20   10    9   15    4 |    20   31   21   19   30   20   29   18   21   22    20
  22E |    7   20   12   13   18    6   21    9    9   17    4 |    20   29   22   24   24   19   25   22   18   27    19
  23  |    7   25    7    9   14    4   24   10    7   18    4 |    12   34   19   12   28   14   30   15   16   11    14
  24  |    9   15    7   10   15    6   11   10    9   23    4 |    17   28   24   20   23   21   27   19   19   32    20
 X25  |   17  ---    6    9   16    5  ---   11   12  ---    5 |    13  ---   17   16   28   13  ---   17   21  ---    14
  26  |    8   14    7   10    9    5   12   13   12   27    4 |    12   21   18   17   23   15   20   21   19   31    16
  27  |   15   20   10   10   13    6   19   13    8   26    5 |    20   31   29   19   29   22   38   22   25   51    22
  28  |   13   21    9   11   17    7   21   15   11   21    5 |    17   27   17   19   26   15   27   26   23   23    16
 X29  |    6   11    9   10   11    5   15   11   11  ---    4 |    16   22   19   17   18   15   23   18   22  ---    16
  30  |    8   14    8    7   13    5   13    9   10   15    3 |    19   27   21   19   27   21   23   22   22   24    19
  31E |   11   16   14   12   17    8   20    8    9   12    4 |    16   27   20   18   32   15   29   14   17   17    17
  32  |   13   18    6    9   15    3   18   16   10   20    4 |    17   26   23   21   24   19   31   24   25   32    21
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |   11   19   10   11   16    6   18   12   10   20      |T   22   33   26   25   31   26   32   26   26   28    24
 WRMS |    9   19   10    9   14    5   17   10    7   20      |NE  16   27   19   19   25   22   26   19   21   22    18
 MEDI |    9   19    9   10   15    5   17   11   10   20      |MD  17   29   21   19   28   17   28   19   21   23    18

Table 3.1609.6   GPS week: 1609   Day: 6   MJD: 55513.000                            

        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  |    6  ---  ---  205  ---  234  ---  ---  ---  ---    0 |    60  ---  ---  128  ---  196  ---  ---  ---  ---    58
   2  |    7   22   12   12   19    6   26   12   10   25    5 |    25   38   25   19   32   23   40   23   26   34    24
   3  |    4   12    8   10   17    6   14    9   11   35    4 |    37   41   37   41   47   37   39   36   37   42    37
   4  |   11   16    9    9   13    5   12   19   10   21    4 |    15   21   19   19   17   16   18   29   19   18    15
   5E |    7   22   11    9   22    7   16   14   14   11    4 |    39   47   39   41   42   41   45   41   38   43    39
   6  |    6   13    7   10   17    5   15    8   10   19    3 |    27   30   26   31   39   27   28   29   26   26    27
   7E |   12   19   10   10   18    4   23   10   13   11    4 |    31   34   29   27   33   27   39   25   29   30    29
   8E |   15   18   12   14   18    6   22   25   18   17    6 |    29   34   25   32   36   27   36   39   39   29    29
   9  |   12   17    9    8   19    7   18   17   11   30    5 |   137  142  143  133  135  140  140  133  140  136   138
  10E |   13   15   14   16   22    8   17   16   12   26    5 |    39   44   42   36   49   34   45   42   34   44    38
  11  |    9   15   12    9   20    4   18   10   11   16    4 |    23   40   26   26   48   26   38   22   23   24    26
  12  |    8   19   10   12   22    7   25   20   10   19    5 |    14   27   21   22   33   20   30   25   23   21    17
  13  |    7   19   11   10   20    3   25    8   13   14    4 |    18   32   25   23   37   19   32   20   27   13    20
  14  |    7   19   10   12   18    7   25   10   10   21    4 |    13   26   23   23   29   17   27   20   20   25    18
  15  |    7   24   11    8   17    6   25   13   10   22    5 |    15   26   18   15   30   15   27   18   19   20    15
  16  |    7   23   15   13   22    7   25   12   10   21    5 |    12   27   18   16   29   14   26   17   16   18    14
  17  |    8   12    9   12   17    5   17   19   15   26    5 |    34   32   34   34   33   33   34   37   38   33    33
  18E |    9   25    9   11   15    6   27   12    8   16    5 |    54   59   58   56   64   57   56   56   54   48    54
  19  |    5   11    8   11   14    5   13    8    8   25    3 |    31   35   32   32   32   30   35   33   34   34    31
  20E |    8   20    8   10   18    5   21   11    8   13    4 |    18   28   27   21   34   21   29   23   24   23    21
  21  |    7   21    9    8   23    5   22   10    7   17    4 |    27   34   26   21   36   25   37   21   23   25    24
  22E |    6   15   11   11   22    7   18   11    9   16    4 |    12   20   17   15   25   12   21   15   17   18    11
  23  |    7   25   14   10   17    3   26   10   11   19    5 |    13   34   24   19   28   18   33   17   21   15    17
  24  |    9   15    8    9   19    5   15   10    8   24    4 |    23   26   25   21   33   23   28   23   22   33    22
 X25  |   17  ---    9    9   20    5  ---   12    8  ---    5 |    15  ---   19   15   28   13  ---   18   21  ---    14
  26  |    7   13   12    9   14    6   12   12   14   26    4 |    17   20   22   17   23   18   24   25   23   28    19
 X27  |   10   20    7    8   18    6  ---   15    8  ---    5 |    55   61   55   54   59   54  ---   57   57  ---    55
  28  |    8   17    9    9   22    6   23   21   10   22    5 |    15   25   18   22   29   17   27   29   21   26    16
 X29  |    7   12   10    9   16    5   14   12   12  ---    4 |    31   35   37   25   31   28   34   30   32  ---    31
  30  |    7   14    9   10   16    4   15    9    9   14    3 |    20   28   28   29   33   24   22   28   31   27    25
  31E |   17   16   12   13   25    6   23   12   10   13    5 |    28   32   27   21   33   23   34   26   24   24    26
  32  |   14   20   12   12   36    3   18   19   10   19    6 |    24   29   25   22   33   23   34   29   21   34    23
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |    9   18   11   11   20    6   20   14   11   21      |T   29   36   31   33   38   34   36   31   31   31    30
 WRMS |    8   18   10   10   18    5   20   11    8   20      |NE  23   30   25   28   32   30   30   25   24   26    23
 MEDI |    7   17   10   10   18    6   18   12   10   19      |MD  24   32   26   23   33   23   34   26   24   26    24



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 4.1609   GPS week: 1609   MJD: 55507.0-55513.0

CENT| CLK EPO  |        BRUS       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3033 |U   13    12    47 |U   12    13    53 |U   11    12    25 |
emr | emr 2872 |U   17    12    35 |U   13    13    56 |    15    14    28 |
esa | esa 2976 |    14    10    35 |U   11    13    51 |    11    13    24 |
gfz | gfz 2998 |U   13    10    24 |U   11    14    51 |U   12    12    26 |
grg | grg 2948 |    17    14    44 |U   12    15    60 |    13    14    30 |
igr | igr 2977 |    14    11    30 |    12    13    53 |    12    12    24 |
igs | igs 2960 |    15    10    34 |    11    14    53 |    11    13    24 |
jpl | jpl 2841 |U   16    11    33 |U   13    14    58 |U   14    14    30 |
mit | mit 2976 |U   21    16    44 |U   12    15    56 |U   12    13    28 |



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 5.1609.0   GPS week: 1609   Day: 0   MJD: 55507.0

CENT| CLK EPO  |        BRUS       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3032 |    15    28    26 |     7     8    28 |     7    10    19 |
emr | emr 2868 |    17    17    33 |     8     8    28 |    10    13    26 |
esa | esa 2976 |    31    24    35 |     6     9    30 |     9    12    18 |
gfz | gfz 2964 |    31    25    36 |     6     9    28 |     8    10    19 |
grg | grg 2976 |    29    20    32 |  ----  ----  ---- |     0     0     0 |
igr | igr 2976 |    30    20    32 |     6     8    29 |     8    13    18 |
igs | igs 2976 |    30    20    32 |     8    10    30 |     8    12    19 |
jpl | jpl 2770 |    30    23    40 |     8     8    30 |     9    12    22 |
mit | mit 2976 |    44    19    41 |     7     9    30 |    10    13    26 |

Table 5.1609.1   GPS week: 1609   Day: 1   MJD: 55508.0

CENT| CLK EPO  |        BRUS       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3022 |    26    17   133 |     7     8    29 |     6     8    15 |
emr | emr 2868 |    24    11    36 |     9     8    38 |     9    12    21 |
esa | esa 2976 |    20     7    23 |     7     8    30 |     7     9    17 |
gfz | gfz 2960 |    13     7    20 |     6     9    29 |     6     7    16 |
grg | grg 2976 |    22    10    28 |     8    10    32 |     8    11    23 |
igr | igr 2962 |    20    14    39 |     9     9    33 |    10    10    21 |
igs | igs 2973 |    13     6    22 |     7     8    30 |     6     8    16 |
jpl | jpl 2860 |    17     8    26 |     9     8    39 |     8    10    21 |
mit | mit 2976 |    23     7    21 |     8     9    32 |     7     8    20 |

Table 5.1609.2   GPS week: 1609   Day: 2   MJD: 55509.0

CENT| CLK EPO  |        BRUS       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3045 |     9     5    20 |     7    13    27 |     9    10    18 |
emr | emr 2872 |    12    10    20 |     9    11    34 |    10    13    21 |
esa | esa 2976 |     7     5    16 |     7    14    26 |     8    14    19 |
gfz | gfz 2964 |     8     5    16 |     7    13    26 |     8    13    18 |
grg | grg 2784 |     9     6    18 |     7    14    30 |    11    16    26 |
igr | igr 2974 |     7     6    17 |     7    12    28 |     8    13    18 |
igs | igs 2971 |     7     5    15 |     7    12    26 |     9    14    18 |
jpl | jpl 2865 |    12     9    18 |     8    13    30 |     8    11    19 |
mit | mit 2976 |    19    14    55 |     7    13    27 |    10    13    22 |

Table 5.1609.3   GPS week: 1609   Day: 3   MJD: 55510.0

CENT| CLK EPO  |        BRUS       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3020 |    10     8    23 |    12    19    58 |    36    31    70 |
emr | emr 2874 |    11    10    28 |     9    18    50 |    43    28    65 |
esa | esa 2976 |     7     6    19 |     9    17    42 |    36    32    59 |
gfz | gfz 2966 |     7     6    19 |     9    19    40 |    43    33    73 |
grg | grg 2976 |    10    10    20 |    10    20    46 |    46    35    72 |
igr | igr 2976 |     8     6    20 |     9    18    45 |    39    31    68 |
igs | igs 2976 |     7     6    19 |     9    19    44 |    38    30    66 |
jpl | jpl 2867 |    10     9    23 |    12    19    53 |    49    38    77 |
mit | mit 2976 |    27    44   119 |    11    21    43 |    34    27    67 |

Table 5.1609.4   GPS week: 1609   Day: 4   MJD: 55511.0

CENT| CLK EPO  |        BRUS       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3035 |    10     8    29 |    20    18    51 |     5    11    21 |
emr | emr 2876 |    18    12    38 |    20    16    61 |    11    11    18 |
esa | esa 2976 |    11    11    23 |    19    16    49 |     6     8    17 |
gfz | gfz 3054 |    14    10    30 |    20    16    49 |     6     7    17 |
grg | grg 2976 |    12    16    24 |    19    16    50 |     7    12    29 |
igr | igr 2976 |    11    11    24 |    20    17    55 |     6     7    14 |
igs | igs 2875 |    12    10    25 |    21    18    60 |     6    10    17 |
jpl | jpl 2876 |    16    11    29 |    21    15    58 |     7     9    23 |
mit | mit 2976 |    13    12    29 |    21    21    62 |    11     9    25 |

Table 5.1609.5   GPS week: 1609   Day: 5   MJD: 55512.0

CENT| CLK EPO  |        BRUS       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3040 |    12     9    77 |    17    17   139 |     7     8    13 |
emr | emr 2875 |    17    11    57 |    21    17   147 |    10    11    20 |
esa | esa 2976 |    13    12   106 |    14    18   136 |     7     8    18 |
gfz | gfz 3041 |    13     9    29 |    16    17   147 |     7     8    17 |
grg | grg 2976 |    30    25   159 |    15    20   153 |     8    12    29 |
igr | igr 2976 |    12    10    58 |    16    17   141 |     7     7    15 |
igs | igs 2976 |    29    12   102 |    15    18   136 |     7     9    16 |
jpl | jpl 2874 |    14     9    69 |    19    20   155 |     8    11    25 |
mit | mit 2976 |    13     8    21 |    15    20   155 |     9    11    21 |

Table 5.1609.6   GPS week: 1609   Day: 6   MJD: 55513.0

CENT| CLK EPO  |        BRUS       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3043 |     8     8    24 |    14    10    40 |     6     8    20 |
emr | emr 2872 |    20    13    30 |    15    11    31 |     9     8    23 |
esa | esa 2976 |     8     8    26 |    13    10    44 |     7     7    19 |
gfz | gfz 3042 |     8     8    20 |    14    12    41 |     6     7    21 |
grg | grg 2976 |     9    10    27 |    14    11    49 |    10    12    30 |
igr | igr 3001 |     8     7    24 |    15    12    42 |     6     6    17 |
igs | igs 2976 |     8     8    25 |    13    12    44 |     6     7    18 |
jpl | jpl 2776 |    16    11    29 |    17    11    41 |     8     8    22 |
mit | mit 2976 |     8     7    25 |    14    12    47 |     7     7    19 |


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 6.1609   GPS week: 1609   MJD: 55507.500-55513.500

                                                         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 |      35     -24     -56     347      0 |       0     20
            |      20      15      77      84      4 |       2
emr   uuuuu |      41      -3     -66      84      4 |      38     44
            |      25      15      77      82      8 |       2
esa   uuuuu |     -32     -27      96    -244     -8 |       6     22
            |      22      26      34      69      5 |       4
gfz   uuuuu |      15      43     -67      43      3 |     -11     23
            |      19      11      36      54     11 |       3
grg   uuuux |      51     -48       6     259      9 |       0     29
            |      34      21      96      55     38 |       3
igr   xxxxx |       3      38      62     109     -7 |      -1     19
            |      22      28     109      57      9 |       4
irf   xxxxx |     -11     -13      11     -52     10 |      -7     21
            |      14      12      42      61      7 |       3
jpl   uuuxu |      77     -11    -195     402     -5 |      14     29
            |      52      41     149      69      2 |       2
mit   uuuuu |     -50     -27     -38    -209     10 |      -1     20
            |      16      14      73      84      7 |       3
ngs   uuuuu |     -15      36      64     233     -6 |       2     14
            |      43      51     115     147     10 |       2
sio   uuuuu |      14       6      98      13      9 |       8     23
            |      26      20      95      80      9 |       2


Table 7.1609.0   GPS week: 1609   Day: 0   MJD: 55507.500

                                                         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 |      67     -12     101     489     -3 |       3     19
emr   uuuuu |      88       5      44     218     -7 |      42     47
esa   uuuuu |     -33     -25     153    -336    -11 |      11     21
gfz   uuuuu |     -10      40     -46     -22    -12 |      -7     19
grg   uuuux |      36     -37     110     202     74 |      -2     28
igr   xxxxx |      -4      20    -104      23    -14 |       5     16
irf   xxxxx |     -25     -23     -42     -83     -4 |      -7     17
jpl   uuuxu |      36     -20    -448     370     -6 |      19     31
mit   uuuuu |     -59     -36    -116    -204     -3 |      -1     16
ngs   uuuuu |      20      52     107     325     12 |       2     11
sio   uuuuu |     -13     -29     -19      22     -7 |      12     23

Table 7.1609.1   GPS week: 1609   Day: 1   MJD: 55508.500

                                                         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 |      37     -12     -85     429     -1 |      -2     20
emr   uuuuu |      59      -8      12     -32     -2 |      37     43
esa   uuuuu |      -5      -6      55    -243     -4 |       7     23
gfz   uuuuu |       7      67     -43      42    -11 |     -12     25
grg   uuuux |      34     -73     129     254     14 |       1     30
igr   xxxxx |       8      34     129     169    -14 |       0     21
irf   xxxxx |      12       9     -37     -70      4 |     -11     22
jpl   uuuxu |      66      -8    -198     352     -2 |      13     28
mit   uuuuu |     -26       2    -136    -228      3 |      -5     19
ngs   uuuuu |     -86     -39     154     364      3 |       0     13
sio   uuuuu |      56      29     -13      -8      1 |       7     22

Table 7.1609.2   GPS week: 1609   Day: 2   MJD: 55509.500

                                                         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 |      35     -53    -128     273     -2 |       0     22
emr   uuuuu |      20     -13     -36      71     -1 |      38     45
esa   uuuuu |     -54     -10      61    -247     -5 |       8     24
gfz   uuuuu |      18      34     -46      16      4 |     -11     25
grg   uuuux |      40     -55     -51     265    -39 |       6     33
igr   xxxxx |      28       2     213     138    -17 |       1     21
irf   xxxxx |     -15     -11     -11     -96     13 |      -9     22
jpl   uuuxu |     106      -6     -67     341     -4 |      14     29
mit   uuuuu |     -49     -19     -77    -290     11 |      -3     20
ngs   uuuuu |       5      27     104     350    -11 |       4     15
sio   uuuuu |      26      10      28     -26     13 |       7     22

Table 7.1609.3   GPS week: 1609   Day: 3   MJD: 55510.500

                                                         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     -28     -57     290      5 |       2     22
emr   uuuuu |      24      17    -171       3      6 |      39     45
esa   uuuuu |     -23     -45     108    -177     -2 |       9     24
gfz   uuuuu |      34      44    -133      71      5 |      -9     24
grg   uuuux |      55      -9    -143     275    -32 |      -2     29
igr   xxxxx |     -28      81     -41      44     -8 |       1     21
irf   xxxxx |     -28     -15      15    -131     13 |      -6     22
jpl   uuuxu |     177     -53    -330     430     -3 |      15     30
mit   uuuuu |     -78     -31     -30    -336     12 |       0     21
ngs   uuuuu |     -30      45     212     324    -13 |       5     15
sio   uuuuu |     -20      15     158     -98     12 |       8     23

Table 7.1609.4   GPS week: 1609   Day: 4   MJD: 55511.500

                                                         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 |      29     -29    -122     350      1 |       0     21
emr   uuuuu |      19      11    -129     102      7 |      37     44
esa   uuuuu |     -10       7      83    -229    -15 |       6     22
gfz   uuuuu |      43      37    -102      33      5 |     -12     24
grg   uuuux |      48     -48     -26     220      1 |      -2     28
igr   xxxxx |      33      69      28     129     -4 |      -2     20
irf   xxxxx |       3      -4      41     -30     14 |      -6     22
jpl   uuuxu |      81      41    -198     346     -7 |      13     29
mit   uuuuu |     -43     -26      42    -176     15 |       0     21
ngs   uuuuu |     -55     -17      42     200     -7 |       3     15
sio   uuuuu |      26      23     164       4     12 |       7     23

Table 7.1609.5   GPS week: 1609   Day: 5   MJD: 55512.500

                                                         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     -15     -53     333      5 |      -2     20
emr   uuuuu |      46     -27     -73     112     19 |      36     42
esa   uuuuu |     -35     -37     115    -152    -11 |       2     19
gfz   uuuuu |      14      34     -40      14     15 |     -14     23
grg   uuuux |      19     -68     -24     227     23 |      -2     28
igr   xxxxx |      -8      28      95     160      2 |      -5     18
irf   xxxxx |     -10     -24      60      50     17 |      -5     22
jpl   uuuxu |      48      37     -69     453     -7 |      12     28
mit   uuuuu |     -47     -40      19    -107     16 |       1     21
ngs   uuuuu |       7      76     -92      -4    -15 |       1     14
sio   uuuuu |       8      -7     194     167     19 |       7     23

Table 7.1609.6   GPS week: 1609   Day: 6   MJD: 55513.500

                                                         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 |      52     -16     -50     264     -4 |      -2     20
emr   uuuuu |      31      -2    -106     112      4 |      38     44
esa   uuuuu |     -65     -70      99    -326     -8 |       0     20
gfz   uuuuu |      -3      43     -56     146     14 |     -14     23
grg   uuuux |     124     -43      46     368     20 |      -1     28
igr   xxxxx |      -7      30     118     101      7 |      -7     19
irf   xxxxx |     -13     -19      53      -6     13 |      -3     21
jpl   uuuxu |      22     -69     -56     525     -6 |      13     28
mit   uuuuu |     -52     -36      33    -124     12 |       3     21
ngs   uuuuu |      32     107     -81      76    -13 |      -2     16
sio   uuuuu |      11       1     177      30     12 |       9     23



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