[IGSREPORT-18707] Wk 1587 IGS Final Orbits

Jim Ray igs.acc at noaa.gov
Thu Jun 24 04:48:14 PDT 2010


Author:  AC Coordinator / NOAA NGS

sum-file Version 2.0
Final IGS Orbit Combination - Week 1587   (Jun 06, 2010 - Jun 12, 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:

igs1587[0-6].sp3  IGS GPS ephemeris files in SP3 format.
igs1587[0-6].clk  IGS GPS satellite and station clocks in clock RINEX format.
igs1587[0-6].cls  IGS GPS clock combination summary report.
igs15877.erp      Earth Rotation Parameters (ERP) and their rates as well as
                  Universal Time (UT1-UTC) and Length Of Day (LOD) associated 
                  with IGS ephemerides.
igs15877.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.  The SIO solution since
    week 1582 has been manually excluded due to applying unremovable over-
    constraints and large rotations.

 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   | USNO DGAR USNO
                0  |  EMR   | 10 10 WTZR WTZR
                0  |  ESA   | KOKB DGAR KOKB
                0  |  GFZ   | KOKB METS SUTH
                0  |  GRG   | DGAR ONSA ULAB
                0  |  JPL   | 10 WILL
                0  |  MIT   | 32 32 DAV1 DAV1
                1  |  COD   | DGAR
                1  |  EMR   | 10 10 WTZR WTZR
                1  |  ESA   | DGAR IRKJ KERG KOKB YAKT
                1  |  GFZ   | KOKB MDVJ METS SUTH UNSA
                1  |  GRG   | DGAR IRKJ ONSA SANT
                1  |  JPL   | 10
                1  |  MIT   | 32 31 32 YELL
                1  |  NGS   | 1
                2  |  COD   | DGAR XMIS
                2  |  EMR   | 10 10 WTZR WTZR
                2  |  ESA   | MATE DGAR IRKJ KERG KOKB MATE METS UNSA
                2  |  GFZ   | 5 HARB KOKB MATE MDVJ METS SUTH
                2  |  GRG   | DGAR IRKJ SANT
                2  |  JPL   | 10 ZWE2
                2  |  MIT   | 32 32
                3  |  COD   | DGAR
                3  |  EMR   | 10 10 WTZR MATE WTZR
                3  |  ESA   | ALIC ALIC DGAR IRKJ KOKB METS
                3  |  GFZ   | KOKB METS SUTH UNSA
                3  |  GRG   | DGAR IRKJ ONSA SANT
                3  |  JPL   | 10 32
                3  |  MIT   | 25 32 25 32
                4  |  COD   | DGAR GODE SANT SOFI
                4  |  EMR   | 10 10 WTZR WTZR YAKT
                4  |  ESA   | DGAR IRKJ KERG KOKB METS UNSA
                4  |  GFZ   | KOKB METS SUTH
                4  |  GRG   | DGAR IRKJ ONSA SANT YAKT
                4  |  JPL   | 10 ZWE2
                4  |  MIT   | 25 32 25 32 GODE KARR GODE
                5  |  COD   | DGAR
                5  |  EMR   | 10 10 KOUR WTZR KOUR PERT WTZR
                5  |  ESA   | MAW1 NNOR PERT DGAR IRKJ KOKB MATE NNOR PERT
                5  |  GFZ   | KOKB MDVJ METS
                5  |  GRG   | DGAR IRKJ ONSA
                5  |  JPL   | 10 32 KOUR PERT
                5  |  MIT   | 25 32 25 32 BAKO
                5  |  NGS   | 1
                6  |  COD   | DGAR WES2
                6  |  EMR   | 10 10 WTZR KERG WTZR
                6  |  ESA   | DGAR IRKJ KOKB METS
                6  |  GFZ   | KOKB MDVJ METS
                6  |  GRG   | DGAR IRKJ ONSA
                6  |  JPL   | 10 THU3
                6  |  MIT   | 32 32

 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
               ----+--------+---------------
                3  |  GRG   |  25
                4  |  MIT   |  25

 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 G23 |    |    |    |    |    |    |  1 |
           PRN G25 |  4 |  2 |  4 |  4 |    |    |  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  |     .7     .5    1.3      -4     -8      3    -.24
       EMR  |    9.1   -2.3   -3.1      49     33    -11     .26
       ESA  |    6.4    1.4    8.6      34     18    -78    -.11
       GFZ  |    -.1    2.2     .1       7     20    -91     .12
       GRG  |    7.5    5.2    2.9       8     34    -31    -.03
       JPL  |    9.2   -5.0   -6.4     -22    -76    -44     .14
       MIT  |    6.3    -.4    4.2      -4     15    -35    -.19
       NGS  |    7.8   -3.2    5.1     -57   -115     24     .01
       SIO  |    4.8    -.8  -16.3       1    -99    -63     .10


 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 1.1587.a). It also displays the computed satellite
position sigmas for the combined orbits (table 1.1587.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 2.1587.[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 3.1587.[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 5.1587.0-6).

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 1587 summary.                       (Jun 06, 2010 - Jun 12, 2010)

Table 1.1587.a   GPS week: 1587   MJD: 55353.000-55359.000

         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  246|    0     0     0     6   -14    -3  -.21    9    8 |    -390    -424     17     77
        |    0     0     1     9    15    25   .02           |     334     532
emr   93|    0    -1    -5   -78   -37    28   .30   18   18 |    -772    -608     16     88
        |    0     1     0    15    23    17   .01           |     741    1801
esa  138|    1     0     1   -84   -45   -58   .28    8    8 |    -345     907     11    111
        |    0     0     1    24    22    18   .02           |     593    1157
gfz  202|    0     0     3   -22   -69    -4  -.20   10   10 |      22     121     21    110
        |    0     0     0    28    65     8   .02           |     196     256
grg  126|    0     0     6   -32   -91     9   .63   17   15 |  -34267   46129     46    207
        |    0     0     0    17    19    16   .05           |   90584  121961
igr  n/a|    0     0     0     4   -19     2  -.06    4    4 |    6141    -701     16     59
        |    0     0     0    20    25    16   .02           |     780    1856
jpl  118|   -2     1   -11    27   139    54   .46   17   15 |    1514    -568     16    103
        |    1     1     1    12    18    18   .03           |     617    1813
mit  259|    0     0    -1    28   -61    12  -.36   10    9 |   -9349    3282     19    164
        |    0     0     1    27    28     8   .02           |    8852    8544
ngs  217|    0     0     1   138   211    15  -.20   11    8 |    4221  167170   2125   3919
        |    0     0     1    24    41    24   .03           |  148357  486324
sio  268|   -3     1     0    30   151   -35  -.45   17   17 |     ---     ---    ---    ---
        |    0     0     1    20    28    11   .03           |     ---     ---


Table 1.1587.b   GPS week : 1587   MJD: 55353.000-55359.000   

         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  |   21   16    0    0    0   14   16 |
   2  |    5    4    4    4    4    5    5 |
   3  |    4    3    4    3    3    3    4 |
   4  |    4    3    3    3    4    3    3 |
   5  |    4    5    5    5    4    4    5 |
   6  |    4    3    4    3    3    3    3 |
   7  |    5    5    6    5    4    4    4 |
   8  |    4    4    4    4    4    4    4 |
   9  |    5    4    5    4    4    4    4 |
  10  |    6    6    6    6    6    6    6 |
  11  |    4    4    4    4    4    4    4 |
  12  |    5    5    5    5    5    5    5 |
  13  |    5    5    5    5    5    5    5 |
  14  |    5    5    4    5    4    4    5 |
  15  |    5    4    5    5    4    5    5 |
  16  |    5    5    5    5    4    5    5 |
  17  |    5    5    5    4    5    4    4 |
  18  |    5    5    5    4    4    4    6 |
  19  |    4    4    4    3    3    4    4 |
  20  |    4    4    4    4    4    4    4 |
  21  |    4    4    4    4    4    4    4 |
  22  |    4    4    4    3    3    4    4 |
  23  |    5    5    5    5    5    6    9 |
  24  |    3    3    4    3    3    3    3 |
  25  |    0    0   50   27   34   27    0 |
  26  |    3    3    4    3    4    4    4 |
  27  |    4    4    4    4    4    4    4 |
  28  |    4    4    4    4    4    4    4 |
  29  |    4    4    4    4    4    4    4 |
  30  |    5    4    4    5    5    7    6 |
  31  |    6    5    5    5    5    5    5 |
  32  |    7    6    5    5    6    7    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 2.1587.0   GPS week: 1587   Day: 0   MJD: 55353.000                            

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  246|    0     0     0    23     3   -29  -.21    8    8 |    -951     253     16     69
        |                      2   -34                       |
emr   93|    0    -1    -4   -89     3    20   .31   17   17 |   -1125    1573     12     73
        |                    -32   -67                       |
esa  138|    2     1     1   -74   -29   -47   .30    7    7 |   -1201    1025      9    103
        |                      7    32                       |
gfz  202|    0     1     3   -20  -151    -4  -.19   11   11 |    -292       1     22    120
        |                    -71    12                       |
grg  126|    0    -1     6   -43  -106     8   .59   21   19 |    -516     656     47    211
        |                    115    30                       |
igr  n/a|    0     0     0    11   -12    20  -.07    4    4 |    5929    1393     16     60
        |                    -40   -11                       |
jpl  118|   -3     2   -11    42   169    69   .47   17   16 |     747    1355     17    113
        |                    -35   -39                       |
mit  259|    0    -1     0     2  -100    22  -.39   10   10 |  -16683    1752     21    185
        |                     -3    21                       |
ngs  217|    0    -2     0   145   261    28  -.19   12    9 |   16720  -11634   2176   3969
        |                    -27    24                       |
sio  268|   -3     0     0    35   123   -38  -.48   18   18 |     ---     ---    ---    ---
        |                    -83   -68                       |

Table 2.1587.1   GPS week: 1587   Day: 1   MJD: 55354.000                            

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  246|    0     0    -1     9   -29    14  -.18    8    7 |    -426    -128     15     68
        |                    -14     8                       |
emr   93|    0    -2    -6   -87   -62    16   .30   17   17 |     116    -565     15     78
        |                    -34   -35                       |
esa  138|    3     0     1   -91   -43   -67   .30    9    9 |    -866     536     10    103
        |                     25    15                       |
gfz  202|    0     0     2   -49   -30   -21  -.18   10   10 |      17     515     21    114
        |                    -80    21                       |
grg  126|   -2     1     6     2  -119     8   .59   17   14 |     -47      11     42    194
        |                      2    55                       |
igr  n/a|   -1     0     1    31   -20    17  -.03    4    4 |    6963    -802     15     53
        |                    -22   -26                       |
jpl  118|   -2     1   -12    36   112    75   .48   17   15 |    1743    -598     15     98
        |                     21   -37                       |
mit  259|   -1    -1     0   -11   -23    10  -.35   11    9 |  -15426    -380     19    168
        |                     -7     6                       |
ngs  217|    0     0     3   151   160     2  -.18   10    7 | -156467  528097   1959   3564
        |                    -81   118                       |
sio  268|   -4     1     0     5   189   -44  -.41   17   18 |     ---     ---    ---    ---
        |                    -82   -89                       |

Table 2.1587.2   GPS week: 1587   Day: 2   MJD: 55355.000                            

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  246|    0     0     0     2   -33   -27  -.22    8    8 |    -324    -501     15     65
        |                     19    12                       |
emr   93|    1    -2    -4   -95   -35    32   .29   17   17 |     160   -1753     16     86
        |                    -34   -75                       |
esa  138|    1     0     4  -111   -20   -40   .30    9    9 |    -624     270     13    100
        |                     26     7                       |
gfz  202|    0     0     3    30   -30     4  -.18   10   10 |     -16       3     21    111
        |                    -58    27                       |
grg  126|    0    -1     7   -28  -100     0   .62   17   14 |      84    -394     42    198
        |                     42    61                       |
igr  n/a|    0     0     0   -13   -34    20  -.05    4    4 |    6771   -1470     16     62
        |                    -13     6                       |
jpl  118|   -1     3   -11    11   124    18   .40   17   16 |    2022   -1350     17    109
        |                     37   -20                       |
mit  259|    0     0    -2    64   -46    21  -.38    9    8 |     217    -513     18    154
        |                    -18     5                       |
ngs  217|    0     0     1    99   194    22  -.17   12   10 |    -310    -595   2296   3728
        |                     72    78                       |
sio  268|   -3     2     0    69   179   -27  -.45   16   19 |     ---     ---    ---    ---
        |                    -87   -86                       |

Table 2.1587.3   GPS week: 1587   Day: 3   MJD: 55356.000                            

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  246|    0     0     0     4    -3    12  -.20    8    8 |     122   -1451     16     78
        |                     28   -41                       |
emr   93|    0    -3    -5   -64   -32    65   .29   18   18 |   -1078    1692     16     94
        |                    -56   -48                       |
esa  138|    0     1     2  -107   -26   -73   .26    8    8 |     259   -1118     14    127
        |                     20    16                       |
gfz  202|    0     0     2   -15  -137     5  -.23    9    9 |     105     -63     21    106
        |                    -61    23                       |
grg  126|    0    -1     6   -27   -81    34   .71   15   13 | -239693  322711     42    199
        |                     52    16                       |
igr  n/a|   -1     0     0   -21    23   -17  -.05    5    5 |    5948    1886     17     57
        |                    -17   -13                       |
jpl  118|   -3     1   -12    40   150    53   .46   16   15 |    1312    2025     15     97
        |                     -2   -25                       |
mit  259|    0     0    -2    22   -98     8  -.35   10    8 |    -229     510     17    159
        |                     -4    25                       |
ngs  217|    0    -1     1   139   247   -24  -.23    9    7 |  296445 -421720   2326   4238
        |                     10    28                       |
sio  268|   -2     2     0    32   121   -47  -.45   16   16 |     ---     ---    ---    ---
        |                    -82   -66                       |

Table 2.1587.4   GPS week: 1587   Day: 4   MJD: 55357.000                            

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  246|    1     0     0    -4     0   -27  -.21    8    7 |    -488    -243     26     81
        |                     36   -40                       |
emr   93|    0    -4    -5   -64   -28    18   .29   19   19 |    -359   -1954     17     95
        |                    -38   -66                       |
esa  138|    0     0     0   -54   -58   -32   .28    7    7 |    -446    1607     13    103
        |                     -1    46                       |
gfz  202|    0     0     2   -55   -82    -4  -.21    9    9 |     316    -203     21    107
        |                    -61    14                       |
grg  126|    0     0     5   -48   -97    20   .67   16   14 |      97    -158     43    201
        |                     79    48                       |
igr  n/a|   -1     0     0    23   -53   -17  -.08    5    5 |    6925   -2016     18     61
        |                    -28    35                       |
jpl  118|   -2     2   -11    11   149    60   .48   17   16 |    2481   -1790     16    100
        |                     45   -20                       |
mit  259|   -1     0    -1    24   -63     9  -.36    9    8 |     -55      72     16    148
        |                     -8    19                       |
ngs  217|    0     0     1   174   234    15  -.17   10    8 |    -447    -287   2198   3953
        |                    -37   -26                       |
sio  268|   -3     0     1    14   151   -47  -.44   15   15 |     ---     ---    ---    ---
        |                    -69   -67                       |

Table 2.1587.5   GPS week: 1587   Day: 5   MJD: 55358.000                            

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  246|    1     0     0     1   -29    -1  -.21   10    7 |    -145    -620     15     94
        |                     41   -12                       |
emr   93|    2     0    -4   -57   -42    30   .33   17   17 |   -1496    -171     16    100
        |                    -59   -49                       |
esa  138|    1     0     0   -98   -85   -83   .27    8    7 |     220    2484     11    134
        |                     20    28                       |
gfz  202|    0     0     5   -10    34    -3  -.20   10   10 |     153     233     20    118
        |                    -43    20                       |
grg  126|    0    -1     7   -29   -73     9   .59   17   14 |      83     266     55    244
        |                     46    30                       |
igr  n/a|    0     0     0   -11   -35    -7  -.08    4    4 |    5554    -510     17     60
        |                     -4    -6                       |
jpl  118|   -1     0   -10    22   133    50   .48   15   15 |    1421    -374     16    109
        |                     22   -63                       |
mit  259|    0     0     0    38   -41    14  -.34   10    9 |  -14157   -1018     20    170
        |                     -8    13                       |
ngs  217|   -1     0     2   144   158    53  -.23   11    9 |   12818     310   2063   3830
        |                    -15    45                       |
sio  268|   -4     0     1    35   170   -21  -.45   16   17 |     ---     ---    ---    ---
        |                    -79   -72                       |

Table 2.1587.6   GPS week: 1587   Day: 6   MJD: 55359.000                            

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  246|    0    -1     2    11   -10    36  -.25   10    8 |    -522    -280     19     89
        |                     19   -26                       |
emr   93|    1     0    -5   -89   -65    16   .29   17   17 |   -1628   -3079     21     91
        |                    -15   -19                       |
esa  138|    1     0     0   -52   -56   -62   .26    7    7 |     237    1545     11    107
        |                     18    33                       |
gfz  202|   -1     1     2   -37   -87    -5  -.21   10   10 |    -127     365     21     96
        |                    -24    45                       |
grg  126|    0     0     5   -49   -62   -16   .61   17   15 |     118    -189     57    205
        |                     74    13                       |
igr  n/a|    0     0    -1    10    -1     0  -.07    5    4 |    4899   -3392     16     66
        |                    -24    10                       |
jpl  118|    0     0    -9    29   135    53   .43   17   16 |     878   -3244     17     99
        |                      8   -38                       |
mit  259|    0     0    -2    58   -58     0  -.34   13   10 |  -19114   22553     23    169
        |                    -11     9                       |
ngs  217|    0     0     1   112   224    10  -.22   10    7 | -139207 1076020   1860   4152
        |                     99   -13                       |
sio  268|   -2     0     0    24   127   -22  -.48   19   18 |     ---     ---    ---    ---
        |                    -66   -67                       |

       
       
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 3.1587.0   GPS week: 1587   Day: 0   MJD: 55353.000                            

        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  ---  ---  ---  ---   29  ---   26   42  ---   21 |    22  ---  ---  ---  ---   29  ---   16   35  ---    18
   2  |    8   18    8    9   18    4   21   12   11   29    4 |    18   29   24   20   25   20   35   22   27   28    21
   3  |    9   13    6   12   17    3   11    7   11   17    3 |    13   23   24   25   26   19   23   15   26   20    19
   4  |    8   12    6    8   14    4   11   13    9   24    3 |    23   24   24   23   27   20   21   20   29   27    21
   5E |    7   20    6    8   15    3   17    8   13   18    4 |    13   29   20   18   26   15   26   13   24   15    16
   6  |    7   13    5   10   17    4    9    7   11   14    3 |    19   28   29   30   33   25   27   22   29   22    25
   7  |   12   18    9   12   24    3   17   10    9   16    5 |    31   38   34   34   43   32   39   33   35   37    33
   8  |    9   19    7    7   23    5   13   11    7   20    4 |    19   31   27   23   26   22   30   21   28   22    22
   9  |    7   18    6   12   13    3   16   14   11   18    4 |    13   24   16   16   20   13   24   22   21   20    15
  10E |   15   18    9   14   24    8   15   12   28   20    6 |    22   30   25   24   35   21   33   25   40   26    24
  11  |    8   12    9    7   17    2   19   10    7   14    4 |    30   30   32   31   35   29   27   26   35   23    29
  12  |    8   25    8    9   19    4   22    8   10   14    4 |    21   34   18   16   25   17   31   21   26   21    19
  13  |    6   16    8   10   26    3   21   14   10   22    5 |    14   26   16   16   34   15   28   19   21   25    15
  14  |    8   18    7    9   18    3   22   11   10   16    4 |    25   35   32   27   36   28   37   26   37   34    29
  15  |    6   18    7   10   19    3   20   10   13   18    4 |    16   28   22   18   32   17   28   16   27   22    18
  16  |    8   20    6   12   24    3   19    8   15   15    5 |    14   27   22   18   31   17   33   17   28   20    18
  17  |    9   14    9   22   20    4   19   13    9   22    5 |    21   27   27   28   25   23   28   23   27   25    21
  18E |    6   14    7   10   25    4   18   10   12   13    4 |    17   23   21   15   20   16   26   17   22   20    17
  19  |    7   12    6   12   18    4   12   10   10   25    3 |    34   34   37   30   35   32   35   30   38   27    33
  20E |    9   16    7    8   16    4   18   10    8   16    4 |    14   25   19   15   21   15   26   17   21   20    16
  21  |    8   16    8   11   14    4   20    8    8   20    4 |    22   27   22   24   19   22   34   28   27   30    22
  22E |    4   14    5    7   21    3   17    9   10   14    3 |    16   25   19   12   22   17   29   15   26   21    17
  23  |    8   18    8   11   23    3   23   10   12   18    5 |    25   31   24   22   33   22   38   23   30   25    23
  24  |    8   10    5    8   17    3    6    7   13   13    3 |    20   23   27   22   31   22   25   20   29   25    23
 X25  |    4  ---  ---  ---  --- >>>>  ---  ---  ---  ---    0 |    99  ---  ---  ---  --- 9999  ---  ---  ---  ---    97
  26  |    6   12    6    8   13    3   12    7   11   12    3 |    11   19   15   14   18   12   20   13   23   13    12
 X27  |    8   20    5   10   15    4  ---   10    7   14    4 |    10   24   16   16   23   13  ---   17   19   19    13
  28  |    7   14    9    7   22    4   18   11    6   12    4 |    14   26   18   13   27   15   26   18   24   21    16
  29  |    9   15    7    9   16    3   17    8    8  ---    4 |    27   30   27   22   23   25   34   26   31  ---    25
  30  |    8   23    9   11   13    4   18   10   11   18    4 |    16   30   21   21   19   18   27   19   25   19    18
  31  |    8   19    7   13   37    4   20    8   11   13    5 |    24   37   31   30   47   29   41   27   35   31    30
  32E |   14   25    5   20   39    6   16   17   20   20    7 |    19   22   13   16   29   12   16   19   28   22    13
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |    8   17    7   11   21    4   17   10   12   18      |T   21   27   23   21   28   20   29   20   28   23    23
 WRMS |    8   17    7   11   19    4   16   10    9   18      |NE  26   28   25   24   30   22   30   23   29   26    28
 MEDI |    8   16    7   10   18    4   18   10   11   17      |MD  19   27   22   21   26   20   28   20   27   22    19

Table 3.1587.1   GPS week: 1587   Day: 1   MJD: 55354.000                            

        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  |   18  ---  ---  ---  ---   48  ---   19   29  ---   16 |    21  ---  ---  ---  ---   34  ---   15   38  ---    20
   2  |    8   17    7    7   11    8   19   13   10   31    4 |    18   27   22   23   25   20   29   22   20   28    19
   3  |    8    9    9    9   13    4   11    7    6   16    3 |    14   19   21   16   19   16   20   14   19   19    15
   4  |    5   11    5    8   12    3    8    9    7   24    3 |    18   21   19   15   21   18   19   18   19   29    17
   5E |    7   22   11   11   15    4   19   11   12   14    4 |     9   29   20   15   25   14   25   15   20   12    14
   6  |    6    9   10    7   11    3   11    9    8   13    3 |    17   23   24   17   23   20   24   17   20   18    19
   7  |   15   19   10    9   22    4   17   12   10   15    5 |    32   39   33   32   39   31   35   34   32   35    31
   8  |    7   19    7    7   19    4   14    9    6   14    4 |    17   26   21   18   29   18   24   21   22   21    19
   9  |    6   17    6   11   10    3   15   16   11   17    4 |    13   23   16   19   18   16   24   22   22   20    16
  10E |   12   17   12   17   17    6   14   15   25   18    6 |    19   26   21   26   33   23   29   22   34   25    20
  11  |    6   13    7    8   11    5   15   10    8   11    3 |    25   27   26   29   27   27   26   28   27   26    24
  12  |    8   27    8    7   15    4   18    9    8   15    4 |    16   36   20   20   22   19   27   20   22   21    18
  13  |    7   18    9    9   22    4   21   17    9   24    5 |    16   27   18   14   30   17   26   19   18   21    14
  14  |    7   22   11    7   15    5   21   11    7   16    4 |    20   29   22   22   29   19   28   21   20   25    19
  15  |    6   19   11    7   21    5   18   10    6   17    4 |    11   26   19   17   28   14   23   14   19   18    14
  16  |    7   16    8   13   21    4   22    7    7   15    4 |    14   23   18   16   28   13   26   14   19   14    14
  17  |    9   14    8   22   12    3   14   12    6   20    4 |    11   19   14   26   15   10   18   14   19   19     9
  18E |    6   17    9   10   31    3   20   10    9   14    5 |    19   26   21   23   27   20   26   20   23   23    19
  19  |    6   11    9    8   12    6   13   12    6   23    3 |    27   30   33   31   29   29   31   29   26   28    27
  20E |    8   19    5    8   12    5   13    7    7   10    3 |    18   27   17   17   19   16   22   17   20   20    15
  21  |    8   17   10    9   13    4   21    7    9   21    4 |    22   24   19   24   12   21   26   25   25   28    19
  22E |    6   11    8    7   26    5   15    8    7   16    4 |    11   18   16   13   21   13   21   13   16   17    11
  23  |    7   20   14    9   18    3   24   10    9   17    5 |    24   35   28   24   31   25   35   24   27   25    25
  24  |    6    9    9    5   14    4   10    7    9   16    3 |    14   15   18   13   18   15   20   13   18   17    14
 X25  |    3  ---  ---  ---  ---  472  ---  ---  ---  ---    0 |   123  ---  ---  ---  --- 9999  ---  ---  ---  ---   120
  26  |    5   12    7    8   11    5   11    7    7    9    3 |    13   19   18   18   17   16   21   16   19   17    15
  27  |    5   16    7    8   11    3   15   11   11   13    3 |    12   21   18   17   22   15   23   19   21   18    15
  28  |    7   17    8   10   19    5   18    8    8   10    4 |    15   25   17   16   25   14   21   17   19   19    14
  29  |    7   13    8    8   12    4   18    9    9  ---    3 |    20   25   21   27   20   21   26   24   25  ---    21
  30  |    7   21    8   10   11    5   16   11    9   19    4 |    18   30   20   23   24   21   25   22   23   20    19
  31  |    7   20    7   12   30    4   15    8    9   14    5 |    24   34   27   25   40   24   32   24   25   24    24
  32E |   10   21    8   20   13    7   16   17   19   13    6 |    15   19   14   19   18   18   15   20   27   20    14
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |    8   17    9   10   17    4   17   11   10   17      |T   20   25   20   20   24   19   24   19   22   21    21
 WRMS |    7   17    9   10   14    4   15    9    7   18      |NE  27   25   22   20   24   19   25   21   22   23    26
 MEDI |    7   17    8    8   13    4   15   10    9   16      |MD  17   26   20   19   24   18   25   20   21   20    18

Table 3.1587.2   GPS week: 1587   Day: 2   MJD: 55355.000                            

        Weighted Average                                            Orbit Dynamics (7 days)
 PRN  |  cod  emr  esa  gfz  grg  igr  jpl  mit  ngs  sio  IGS |   cod  emr  esa  gfz  grg  igr  jpl  mit  ngs  sio   IGS
------+--------------------------------------------------------+---------------------------------------------------------
  X1  |    4  ---  ---  ---  ---   27  ---  ---  ---  ---    0 |    13  ---  ---  ---  ---   30  ---  ---  ---  ---    13
   2  |    7   18    7    8   11    4   20   12    9   29    4 |    21   29   20   20   25   20   31   16   23   20    19
   3  |   10   10    9    9   13    3   11    7   10   15    3 |    12   19   22   21   20   14   16   11   20   14    15
   4  |    7   10    6    7   12    5   11    6   12   23    3 |    16   18   18   16   22   14   12   16   21   29    15
   5E |    7   20    9    9   17    3   20    9    9   14    4 |    13   32   20   16   24   15   24   14   15   14    14
   6  |    9   10    9    8   14    3   11    5   11   12    3 |    16   22   25   23   24   18   18   16   23   17    19
   7  |   16   19    8   12   21    3   18   11   12   15    5 |    31   35   25   28   29   28   33   30   32   30    26
   8  |    7   16    6    7   22    6   15    8    9   10    4 |    13   23   18   16   28   16   20   16   17   16    14
   9  |    7   17    8   10   11    4   15   15   14   16    4 |    13   23   17   14   17   11   22   14   13   13    11
  10E |   11   19   11   15   24    5   13   14   24   19    6 |    16   27   23   25   34   21   23   21   26   25    18
  11  |    6   15   10    9   13    3   18    8    9   12    4 |    27   33   29   32   31   26   31   24   25   26    26
  12  |    9   30    7    7   19    4   24    9    9   15    5 |    16   37   16   15   26   15   29   16   16   15    15
  13  |    7   16   10   11   21    3   22   11   10   18    4 |    15   27   18   21   28   16   26   18   18   20    15
  14  |    6   22    6    8   12    4   20    8   12   12    4 |    19   30   22   21   26   20   27   21   18   24    19
  15  |    5   16   13    9   17    4   22   12   11   17    4 |    16   28   20   18   26   17   25   19   16   21    15
  16  |    8   23    8   13   21    3   20    7   10   14    5 |    15   30   17   18   28   14   27   15   19   18    15
  17  |    7   19    9   17   11    6   15    8   12   20    4 |    21   27   28   24   23   21   23   19   23   20    19
  18E |    7   18    9   11   20    2   19    6   14   14    4 |    14   23   16   16   20   13   23   13   21   18    13
  19  |    8   11   10    9   12    4   14    9   11   23    3 |    25   33   36   32   32   32   33   27   29   28    29
  20E |    7   20    7   10   15    5   16    8    6    9    4 |    24   32   27   27   32   25   32   28   24   29    25
  21  |    9   14   11   10   13    4   19    6   10   20    4 |    21   25   17   24   19   18   25   25   22   26    19
  22E |    5   15    5    7   20    3   17    8   12   14    4 |    11   21   12   10   22   11   19   12   19   13    10
  23  |    6   20    8   12   18    6   21    8   11   15    4 |    22   36   26   25   28   25   32   24   26   24    23
  24  |   13   11    8    6   11    3    7    7    9   13    3 |    18   17   21   16   23   15   17   15   18   18    16
 X25  |   49  ---   49  ---  ---  260  ---  ---  ---  ---   49 |    82  ---   29  ---  ---  484  ---  ---  ---  ---    80
  26  |    6   12   11    8   12    3   15    6   10   11    3 |    10   19   14    9   15    7   17   12   13   12     8
  27  |    6   14    6    8   12    3   13    9   12   13    3 |    11   21   15   13   19   11   19   10   13   13    10
  28  |    7   11   10    7   18    7   18    7    9    7    4 |    17   25   23   18   28   15   22   15   19   18    16
  29  |    9   12    8    7   16    4   15    6    7  ---    3 |    20   26   21   18   18   20   22   21   18  ---    18
  30  |    8   20    8   10   13    4   16    9   11   19    4 |    18   29   21   23   27   18   25   21   25   22    19
  31  |    7   20    7   11   30    5   18    6   12   12    5 |    15   27   16   16   32   15   25   16   19   14    14
  32E |   11   24    7    9   10    7   14   17   19   14    5 |    23   28   16   16   18   19   15   23   23   21    16
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |    8   17    9   10   17    4   17    9   12   16      |T   19   26   20   19   24   32   23   18   20   19    18
 WRMS |    8   17    9   10   14    4   16    8   10   19      |NE  22   24   22   20   24   53   22   18   20   20    22
 MEDI |    7   16    8    9   14    4   16    8   11   14      |MD  16   27   20   18   25   17   23   16   19   20    16

Table 3.1587.3   GPS week: 1587   Day: 3   MJD: 55356.000                            

        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  |    3  ---  ---  ---  ---   25  ---  ---  ---  ---    0 |    15  ---  ---  ---  ---   23  ---  ---  ---  ---    14
   2  |    9   18    6   10   10    4   19   14    8   30    4 |    26   36   28   29   32   29   39   29   29   33    28
   3  |    9   13    6   10   11    5    8    5    6   14    3 |    12   20   19   20   23   16   18   13   23   16    16
   4  |    7   11    5    7   11    5   10    8   10   21    3 |    21   21   21   24   25   21   19   20   25   30    21
   5E |   10   22    9   11   18    4   17    9    8   14    4 |    10   26   19   19   30   15   23   13   16   14    14
   6  |    8   12    7    8    9    5    9    4    5   12    2 |    22   27   28   26   32   25   26   24   30   23    25
   7  |    8   19    9   11   18    4   16   13    8   16    4 |    34   41   38   38   46   36   42   42   41   44    37
   8  |    6   19    7    5   14    3   16    8    9   10    3 |    25   31   26   29   32   27   31   29   31   27    26
   9  |    7   15    5    9   11    4   15   12    8   14    3 |    10   22   12   13   16   11   21   15   21   14    11
  10E |   14   19   10   15   15    6   14   16   21   19    6 |    17   28   24   26   30   21   29   21   29   25    20
  11  |    7   16    7   11   10    4   17    8    6   12    3 |    32   33   35   34   39   31   32   31   35   31    32
  12  |    9   28   10    8   17    5   23   11    9   16    5 |    19   33   20   16   25   16   29   21   30   20    18
  13  |    7   21   10    9   20    3   20   12   10   17    4 |    13   27   15   17   29   14   24   18   19   19    13
  14  |    7   23   10    8   12    5   20   10    8   13    4 |    20   34   26   26   30   24   32   24   34   27    24
  15  |    6   16    8    9   17    5   19   14   10   15    4 |    20   25   23   19   32   23   28   21   27   21    20
  16  |    7   22    8   12   17    4   21    5    8   14    4 |    13   28   17   10   30   13   30   13   27   13    15
  17  |    7   15    8   15    9    4   17    9    6   19    4 |    14   22   16   24   20   18   25   17   25   22    16
  18E |    7   20    6    9   17    5   16    7    5   13    3 |    22   29   20   21   24   21   28   20   25   25    19
  19  |    8   11    6    9   10    4   13    9    8   22    3 |    34   35   39   36   40   34   36   32   36   30    35
  20E |    7   18    4    9   10    5   16    6   10    9    3 |    25   29   26   26   34   27   31   27   29   26    25
  21  |   11   17    7    8   11    7   18    4    8   20    3 |    24   26   20   22   16   22   31   24   27   27    20
  22E |    5   13    6    5   16    5   14    7    4   12    3 |    10   16   14   11   21   12   18   11   18   13    10
  23  |    8   23    9    9   18    3   21    9   11   15    4 |    26   35   24   24   32   24   36   23   30   23    24
  24  |    8   11    4    7   14    5    8    6   11   11    3 |    16   20   21   20   24   18   21   18   25   22    18
 X25  |   35  ---   38  --- 1408   68  ---   39  ---  ---   26 |    43  ---   38  --- 9999  302  --- 9999  ---  ---    43
  26  |    5   12    7    7   12    4   11    9    6   11    3 |    15   21   16   14   19   13   21   16   20   15    13
  27  |    6   17    7    7   14    4   15   11    8   12    3 |     9   23   15   14   20   11   21   16   20   14    12
  28  |    7   15    7    6   19    6   17    7   10    9    4 |    15   22   13   14   25   14   23   13   25   15    13
  29  |    8   15    6    9   16    5   17    9   13  ---    4 |    24   26   21   20   20   20   31   22   28  ---    21
  30  |    7   23   11    9   11    4   17   12    8   17    4 |    25   32   25   26   27   23   28   23   32   26    24
  31  |   10   18   10    8   26    6   18    8    9   12    4 |    28   36   35   31   42   30   39   31   38   31    31
  32E |   11   24    6   11   16    6   11   15   18   12    5 |    17   21   16   21   24   15   13   24   26   22    15
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |    8   18    8    9   15    5   16   10    9   16      |T   20   27   22   22   27   29   27   21   27   23    21
 WRMS |    8   18    8    9   13    5   15    8    7   16      |NE  22   27   25   23   28   43   27   22   28   24    23
 MEDI |    7   17    7    9   14    5   16    9    8   14      |MD  20   27   21   21   27   21   28   21   27   23    20

Table 3.1587.4   GPS week: 1587   Day: 4   MJD: 55357.000                            

        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  |    3  ---  ---  ---  ---   41  ---  ---  ---  ---    0 |    31  ---  ---  ---  ---   14  ---  ---  ---  ---    33
   2  |    8   18    7    7   12    8   20   15    7   32    4 |    12   27   18   18   26   15   31   13   16   22    15
   3  |    6   12    6    7   15    4   10    4    9   13    3 |    12   16   16   13   19   11   16   13   20   15    13
   4  |    6   13    7    6   14    4   10    8   12   22    3 |    25   20   25   20   25   19   18   20   19   28    20
   5E |    6   19    8    8   17    5   18    7   11   12    4 |    15   24   17   15   25   12   22   14   15   12    13
   6  |    5   11    6    6   11    5   10    4    9   11    2 |    14   21   18   16   22   14   19   14   22   16    15
   7  |    7   19    6    9   20    6   16    9    7   13    4 |    18   25   21   23   30   19   26   21   23   22    19
   8  |    7   16    6    7   17    4   13   10    7    7    3 |    18   27   21   20   27   16   26   16   21   17    18
   9  |    7   16    5    9   11    5   15   11   12   16    4 |    13   23   15   17   23   15   24   21   18   14    15
  10E |   16   19    6   15   18    9   11   18   22   18    6 |    18   27   21   20   32   16   26   23   26   23    18
  11  |    6   16    7    8   10    5   18    7    7   14    3 |    23   26   22   25   30   21   25   21   22   22    21
  12  |   10   28    8   10   18    4   26   13   10   14    5 |    20   33   21   15   25   17   32   23   25   20    19
  13  |    6   21    7   10   18    3   22   10   10   11    4 |    18   28   19   21   30   16   28   20   18   20    17
  14  |    7   21    6    6   12    4   18    7   10   12    3 |    15   28   20   19   27   15   27   17   21   20    17
  15  |    7   16    7    9   16    5   20   11   12   13    4 |    17   26   22   19   30   18   27   23   22   21    19
  16  |    8   24    7   10   17    5   21    5    8   15    4 |    15   29   20   16   27   14   28   15   19   15    16
  17  |    9   19   10   17   12    3   17    8    9   18    4 |    23   27   28   28   26   21   28   24   21   24    22
  18E |    6   23    6    9   19    4   20    7    7   13    4 |    17   29   17   18   20   15   25   16   17   22    15
  19  |    6   13    6    6   11    4   15    8    6   22    3 |    20   26   27   20   25   20   27   19   27   16    21
  20E |    6   25    6    7   10    4   19    7    8    9    3 |    24   34   26   25   27   25   29   30   27   29    25
  21  |    8   16    7    7    8    3   16    5    8   20    3 |    22   23   21   22   17   20   26   23   24   26    20
  22E |    8   16    5    3   15    5   14    5    8    8    3 |    14   21   17   11   21   13   24   14   19   13    14
  23  |    6   26    8   10   20    4   23    7    9   17    4 |    35   45   37   33   44   35   43   36   36   40    35
  24  |    6   12    5    4   13    3    8    7    8   11    3 |    15   15   17   17   22   16   17   18   19   18    16
 X25  |   36  ---   31  ---  ---   52  ---  108  ---  ---   34 |    60  ---   61  ---  ---  459  --- 9999  ---  ---    65
  26  |    5   15    6    7    9    5   14   12    9   10    3 |    16   21   16   16   18   14   20   23   16   20    14
  27  |    7   16    4    7   11    4   14    9   11   16    3 |    14   22   17   17   23   15   24   19   18   14    15
  28  |    8   16    9    8   21    5   17   10    7   10    4 |    16   24   14   14   24   13   23   18   18   19    13
  29  |    9   16    6    7   12    4   16    9    6  ---    3 |    19   21   18   20   23   16   23   21   23  ---    18
  30  |   10   23    7    9   18    4   17    9   12   20    4 |    31   37   34   30   40   31   35   34   32   34    31
  31  |    7   24    8   11   29    5   17    7   11   11    5 |    15   34   19   21   37   16   28   15   20   17    18
  32E |   10   25    8   13   17    5   16   15   19   11    5 |    23   27   20   18   23   20   19   25   30   22    19
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |    8   19    7    9   16    5   17    9   10   15      |T   20   26   22   19   26   31   25   20   21   20    20
 WRMS |    7   19    7    9   14    5   16    8    8   15      |NE  19   23   22   18   24   50   22   18   20   18    20
 MEDI |    7   16    7    8   15    4   16    8    9   13      |MD  18   26   20   19   25   16   26   20   21   20    18

Table 3.1587.5   GPS week: 1587   Day: 5   MJD: 55358.000                            

        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  ---  ---  ---  ---   40  ---   17   23  ---   14 |    18  ---  ---  ---  ---   39  ---   24   41  ---    23
   2  |    7   18    7    8   13    5   18   17    8   33    4 |    20   33   28   22   30   23   34   21   21   25    23
   3  |    7   12    6    8   13    4   10    7   11   15    3 |    17   18   17   17   21   16   19   14   20   16    15
   4  |    8   10    5    5   14    4    9   10    9   21    3 |    19   20   18   18   24   17   20   19   18   30    17
   5E |    4   22    9   10   14    5   18    8   10   13    4 |    12   27   19   10   26   13   23   14   13   13    12
   6  |    5   12    5    6   12    3    9    7    9   12    3 |    22   23   21   22   27   21   23   21   26   21    21
   7  |    6   20    4    8   24    5   17   10    9   14    4 |    26   33   25   24   30   24   31   29   24   29    24
   8  |    7   17    7    5   17    3   16    9   10    9    4 |    25   34   28   25   33   26   32   28   25   27    26
   9  |    9   17    5   10   11    3   14   10    9   13    4 |    14   24   18   15   19   17   24   21   17   16    16
  10E |   13   15    6   13   17    4   10   20   19   19    5 |    19   26   21   23   31   20   26   24   28   26    20
  11  |    5   15    7    9   13    4   14    9   11   17    3 |    23   29   27   25   33   23   27   23   23   26    23
  12  |   11   23    8    9   21    4   21   12   11   15    5 |    15   28   17   15   23   17   25   23   19   22    16
  13  |    5   17   11    9   24    4   19   10    8   13    4 |    22   31   25   19   30   22   29   22   18   22    20
  14  |    6   21    7    6   15    4   17    9    9   14    4 |    18   30   22   22   29   20   26   19   24   23    19
  15  |    6   18    7    9   21    5   20    9    9   14    4 |    16   27   21   16   27   18   27   20   20   24    17
  16  |    6   22    8   13   18    4   19    7    7   13    4 |    14   29   21   15   24   12   28   14   18   15    15
  17  |    7   13    8   16   12    3   16    9    8   18    4 |    21   26   21   26   20   19   23   21   15   20    17
  18E |    6   18    8    9   18    2   19    7    7   14    4 |    17   27   20   17   25   16   28   18   21   21    17
  19  |    7   12    6    8   12    4   13    8   13   22    3 |    27   30   32   25   30   27   32   25   22   22    26
  20E |    8   18   10    9   10    5   14    9    9   11    4 |    31   33   31   28   33   29   32   30   32   31    29
  21  |    6   17   10    7   11    2   17    8    8   19    3 |    20   25   22   20   14   19   25   20   23   24    18
  22E |    8   14    6    5   18    3   11    6    9    8    3 |    12   21   18   14   18   14   20   14   17   15    13
  23  |   23   21   12    9   20    6   21    9   11   23    6 |    35   55   53   49   48   48   51   52   47   56    45
  24  |    6   10    5    5   14    3    6    9    8   12    3 |    16   17   18   17   20   16   18   18   18   18    15
 X25  |   36  ---   51  ---  ---   55  ---   57   39  ---   27 |    57  ---   55  ---  ---  480  --- 9999    6  ---    62
  26  |    7   12    7    8   11    5   12   13    6   12    3 |    17   23   23   15   21   19   22   24   18   20    18
  27  |    7   17    5   10   13    4   14    8    8   12    3 |    12   24   17   16   20   15   22   17   15   13    14
  28  |    6   15    7    8   17    4   15    7   10    9    3 |    14   25   17   16   24   14   21   14   15   16    13
  29  |    5   16    6   10   14    5   17    8   11  ---    4 |    15   23   16   16   16   14   20   17   17  ---    14
  30  |   28   20   12    8   25    6   16   13   15   22    6 |    56   66   68   64   69   61   65   63   63   64    61
  31  |    6   21    6   10   32    5   14    6    6   10    4 |    20   33   23   22   39   21   29   22   25   21    21
  32E |   11   21   10   24   16    5   14   13   24   13    6 |    20   20   19   22   18   18   18   21   35   19    16
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |   10   17    8   10   17    4   15   10   11   16      |T   21   28   25   21   27   36   27   22   23   23    22
 WRMS |    7   17    7   10   14    4   15    9    9   17      |NE  21   25   23   19   24   54   24   19   19   20    21
 MEDI |    7   17    7    9   14    4   15    9    9   14      |MD  19   27   21   19   25   19   25   21   20   22    18

Table 3.1587.6   GPS week: 1587   Day: 6   MJD: 55359.000                            

        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
------+--------------------------------------------------------+---------------------------------------------------------
  X1M |   24  ---  ---  ---  ---   23  ---   17   22  ---   15 |    20  ---  ---  ---  ---   24  ---   25   29  ---    20
   2M |    8   18    6    9   14    4   18   20    7   33    4 |    25   38   36   32   34   30   40   37   27   33    31
   3  |   10   11    4   11   18    4   11    9   10   19    3 |    15   19   18   19   22   16   19   20   24   19    16
   4  |    7    7    4    7   13    3    9   12   10   22    3 |    27   23   24   26   30   23   22   27   26   33    24
   5E |    5   19    8   13   16    4   18   10    9   16    4 |    10   27   20   16   28   13   24   14   17   13    14
   6  |    8   11    4    8   17    4   11    9    7   15    3 |    20   25   23   23   28   23   23   25   28   22    22
   7  |    6   16    7    7   22    6   16   13    7   21    4 |    18   25   19   19   28   16   24   25   23   25    17
   8M |    6   15    5   10   14    6   16    8    8   14    3 |    22   23   23   23   24   21   25   25   28   24    21
   9  |    6   22    5   10   11    4   15    8    8   17    3 |    15   28   17   15   25   16   23   17   22   15    16
  10E |   14   16   10   14   23    6   12   21   18   20    6 |    17   26   25   27   40   22   28   24   25   29    21
  11M |    7   13    7   10   10    3   18   12   10   23    4 |    26   32   30   30   34   25   29   26   28   31    26
  12M |   10   23    9    9   18    3   22   17    9   18    5 |    22   35   24   23   26   21   31   24   24   21    22
  13M |    7   18    7    9   25    4   21   12   10   15    4 |    18   33   28   26   43   23   32   26   30   21    24
  14  |    7   21    8    9   15    4   22   14   11   15    4 |    19   31   24   22   26   20   28   19   23   24    20
  15M |    7   17    8    9   20    4   22    7    9   17    4 |    25   28   26   21   35   23   31   26   28   28    23
  16M |    8   22    8   10   16    5   21    6    7   13    4 |    16   32   22   15   24   18   31   17   26   19    18
  17M |    7   12    8   15   10    4   16    7   10   21    4 |    32   34   33   38   37   32   35   34   43   37    32
  18E |   16   20    8   10   26    4   19   16   10   16    5 |    30   36   24   20   32   20   34   17   22   28    22
  19  |    8   14    6   10   14    4   14   13    9   23    4 |    31   39   40   37   39   34   39   36   35   33    35
  20E |    7   16    8   14    9    7   16    6   11   12    4 |    24   30   26   26   29   25   30   26   31   27    25
  21  |    6   16    7    7   12    3   18    9    6   21    3 |    23   26   21   23   19   22   29   25   28   25    21
  22E |    7   13    6    6   20    2   12    6    7   23    3 |    17   25   20   18   30   18   25   22   25   21    19
  23M |   34   27   11   11   22   12   25   36   12   31    9 |    71   91   86   82   85   81   92   83   89   88    81
  24  |    6   10    3    5   16    3    9    8    7   14    3 |    21   22   25   22   26   21   23   23   25   24    21
 X25  |    4  ---  ---  ---  ---   86  ---  ---  ---  ---    0 |    85  ---  ---  ---  ---  693  ---  ---  ---  ---    88
  26M |    6   15    6    9   15    3   16    7    7   13    3 |    17   23   22   16   23   16   24   19   22   20    17
  27  |    6   23    6    8   12    5   14    6    9   16    3 |    14   26   18   15   25   15   22   16   21   15    15
  28  |    6   14   10    7   18    6   15   10    8   13    4 |    15   21   14   15   23   12   20   16   20   18    13
  29M |    8   14    8    7   15    3   17   10   10  ---    4 |    24   30   29   26   30   25   30   24   25  ---    25
  30E |   16   22   13   11   19    3   16   13   11   20    5 |    38   56   52   49   60   47   52   46   51   53    47
  31  |    8   19    6   11   25    5   16    8   11   12    4 |    17   31   21   20   35   18   28   19   24   20    19
  32E |   10   21    6   13   20    7   14   13   20   10    5 |    21   26   21   19   25   19   21   21   35   21    19
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |   10   17    7   10   17    5   17   13   10   19      |T   24   31   27   25   32   44   30   25   29   27    26
 WRMS |    8   17    7   10   15    4   16   10    7   18      |NE  24   26   22   21   27   71   25   22   24   22    25
 MEDI |    7   16    7    9   16    4   16   10    9   17      |MD  21   28   24   22   28   21   28   24   26   24    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 4.1587   GPS week: 1587   MJD: 55353.0-55359.0

CENT| CLK EPO  |        BRUS       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3034 |U    9    10    25 |U    6     8    22 |U   86    32    58 |
emr | emr 2871 |    12    10    30 |U   11    15    41 |    92    19    30 |
esa | esa 2934 |     9     9    28 |U    5     7    20 |    87    31    55 |
gfz | gfz 2871 |U   10    10    26 |U    6     9    25 |U   92    20    28 |
grg | grg 2893 |    15    12    39 |U    6     7    22 |   127    35    50 |
igr | igr 2911 |     9     8    25 |     5     7    22 |    92    20    29 |
igs | igs 2934 |     9     8    26 |     5     7    21 |    92    20    29 |
jpl | jpl 2854 |    10     9    33 |    10    21    44 |U   92    20    30 |
mit | mit 2976 |U    8     8    25 |U   11    10    69 |U   95    24    35 |



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 5.1587.0   GPS week: 1587   Day: 0   MJD: 55353.0

CENT| CLK EPO  |        BRUS       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 2951 |     7     8    26 |     6     7    23 |    11     9    24 |
emr | emr 2872 |    10     9    29 |    10    15    42 |    11     9    27 |
esa | esa 2880 |     8     8    28 |     6     7    25 |    13    10    24 |
gfz | gfz 2872 |     8     9    29 |     7     8    31 |    11     8    22 |
grg | grg 2880 |     8    10    36 |     6     7    21 |    14    11    28 |
igr | igr 2880 |     7     9    27 |     5     6    25 |    12     8    22 |
igs | igs 2878 |     7     8    28 |     6     6    24 |    12     8    23 |
jpl | jpl 2774 |     9     8    28 |    12    22    47 |    11    10    25 |
mit | mit 2976 |     6     7    21 |    11     7    55 |    11     6    21 |

Table 5.1587.1   GPS week: 1587   Day: 1   MJD: 55354.0

CENT| CLK EPO  |        BRUS       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3044 |     6     9    19 |     4     6    24 |    14    12    36 |
emr | emr 2872 |    11    10    24 |    10    14    43 |    10     7    27 |
esa | esa 2880 |     7    10    22 |     4     7    24 |    10     7    28 |
gfz | gfz 2872 |     8     9    22 |     5     8    27 |    10     6    26 |
grg | grg 2880 |     8     9    22 |  ----  ----  ---- |  ----  ----  ---- |
igr | igr 2879 |     8    10    20 |     5     8    27 |    10     7    27 |
igs | igs 2925 |     8     9    22 |     5     7    26 |    10     7    26 |
jpl | jpl 2868 |     9    11    24 |    11    24    48 |     9     7    28 |
mit | mit 2976 |     6     9    18 |    12    13    71 |    10     7    24 |

Table 5.1587.2   GPS week: 1587   Day: 2   MJD: 55355.0

CENT| CLK EPO  |        BRUS       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3057 |    14    12    28 |     4     6    20 |   543   158   247 |
emr | emr 2871 |    15    12    33 |    10    11    37 |   590    84    67 |
esa | esa 2976 |    14    10    36 |     4     6    20 |   547   155   240 |
gfz | gfz 2872 |    15    11    29 |     5     9    26 |   587    84    61 |
grg | grg 2880 |    15    11    30 |     5     7    24 |   585    91    60 |
igr | igr 2923 |    14    10    28 |     4     7    22 |   588    83    64 |
igs | igs 2946 |    14    11    28 |     4     6    22 |   587    85    63 |
jpl | jpl 2871 |    13    11    30 |    10    22    40 |   592    79    67 |
mit | mit 2880 |    14    11    29 |    12    13    74 |   587    84    59 |

Table 5.1587.3   GPS week: 1587   Day: 3   MJD: 55356.0

CENT| CLK EPO  |        BRUS       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3067 |     8     8    27 |    10    13    21 |     7     4    18 |
emr | emr 2872 |    13     9    30 |    11    20    40 |     8     8    22 |
esa | esa 2976 |     8     7    28 |     5     7    15 |     8     5    19 |
gfz | gfz 2872 |    15    18    28 |     6     9    17 |     8     6    19 |
grg | grg 2976 |    46    31   107 |     6     7    18 |    19    51   118 |
igr | igr 2926 |     8     6    26 |     5     7    17 |     7     6    19 |
igs | igs 2948 |     8     7    27 |     6     7    19 |     7     6    19 |
jpl | jpl 2862 |    10     7    29 |    12    26    58 |     8     8    20 |
mit | mit 2976 |     8     6    21 |    12     9    72 |    25    23    47 |

Table 5.1587.4   GPS week: 1587   Day: 4   MJD: 55357.0

CENT| CLK EPO  |        BRUS       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3045 |    11    14    29 |     6     7    22 |     8     8    29 |
emr | emr 2872 |    10    10    30 |    15    18    50 |     9     5    24 |
esa | esa 2976 |     7     8    34 |     5     7    17 |     7     5    22 |
gfz | gfz 2872 |     8     9    27 |     6     7    21 |     6     5    21 |
grg | grg 2880 |     8     9    32 |     7     7    23 |     8     6    24 |
igr | igr 2948 |     7     8    25 |     6     7    19 |     7     7    20 |
igs | igs 2959 |     7     8    26 |     5     5    17 |     7     5    20 |
jpl | jpl 2868 |    10    10    54 |    10    19    33 |     7     5    19 |
mit | mit 2976 |     7     8    36 |    10    11    71 |     8     6    20 |

Table 5.1587.5   GPS week: 1587   Day: 5   MJD: 55358.0

CENT| CLK EPO  |        BRUS       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3053 |     8     7    21 |     6    11    21 |    10     5    26 |
emr | emr 2871 |    12     9    29 |     9    13    32 |     9     7    29 |
esa | esa 2976 |     7     6    24 |     6    11    22 |    12     7    29 |
gfz | gfz 2872 |     7     5    24 |     7    10    26 |    10     5    26 |
grg | grg 2880 |     8     6    23 |  ----  ----  ---- |  ----  ----  ---- |
igr | igr 2947 |     7     5    23 |     5     9    21 |    10     6    26 |
igs | igs 2970 |     8     6    24 |     5     9    20 |    10     6    27 |
jpl | jpl 2870 |     9     6    37 |     6    16    35 |    10     9    26 |
mit | mit 3072 |     7     7    30 |    10     9    73 |    11     7    29 |

Table 5.1587.6   GPS week: 1587   Day: 6   MJD: 55359.0

CENT| CLK EPO  |        BRUS       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3021 |     9    11    24 |  ----  ----  ---- |    11    24    24 |
emr | emr 2872 |    12    13    32 |  ----  ----  ---- |     9    18    17 |
esa | esa 2880 |     9    11    23 |  ----  ----  ---- |    11    25    22 |
gfz | gfz 2868 |     9    10    27 |  ----  ----  ---- |    10    27    23 |
grg | grg 2880 |     9    10    25 |  ----  ----  ---- |    11    19    19 |
igr | igr 2878 |     9    10    24 |  ----  ----  ---- |    10    24    22 |
igs | igs 2915 |     9    10    25 |  ----  ----  ---- |    10    26    23 |
jpl | jpl 2871 |    11    10    29 |  ----  ----  ---- |     9    26    21 |
mit | mit 2976 |     9    10    23 |  ----  ----  ---- |    15    33    42 |


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 6.1587   GPS week: 1587   MJD: 55353.500-55359.500

                                                         AC LOD  AC LOD
CENT  FLAG  |   Xpole   Ypole     Xrt     Yrt    LOD |    BIAS  BIAS RMS
            |   [uas]   [uas]   [uas/d] [uas/d]  [us]|    [us]    [us]
------------+----------------------------------------+------------------
cod   xxxxx |      33     -24     102    -112      5 |       1     13
            |      18      19      82     113      6 |       1
emr   uuuuu |      65      33    -100     230      4 |      10     18
            |      19      17      89      70      6 |       1
esa   uuuuu |     -11     -21      23      56      4 |       3     12
            |      18      17      86      90      3 |       1
gfz   uuuuu |      -9      52      21     -87     -4 |      -2     17
            |      13       9      33      49      4 |       5
grg   uuxux |     -22     -63     312    -176      4 |       0     16
            |      16      35     163     113     26 |       3
igr   xxxxx |      15      16      -3     -28      5 |      -3     13
            |      24      17      43      45      4 |       1
irf   xxxxx |      14      -5      42     -35     21 |      -1     19
            |       6      15      29      47     28 |       4
jpl   uuuuu |      49     -19     128     -10      1 |       4     16
            |      16      30     117      94     10 |       2
mit   uuuuu |       0       4       2    -147     -1 |       1     18
            |      13      18      54      96     10 |       5
ngs   uuuuu |     -22      -8     -75     166     -2 |       3     11
            |      45      49      90      86      7 |       2
sio   xxxxx |      88      73     -39    -139     -8 |      13     23
            |      15      14      67     113     11 |       7


Table 7.1587.0   GPS week: 1587   Day: 0   MJD: 55353.500

                                                         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 |      44     -15     170    -228     11 |       0     13
emr   uuuuu |      77      19     -21     203      9 |      12     20
esa   uuuuu |     -22     -20     -21      26      2 |       5     12
gfz   uuuuu |      -2      58      28    -168     -8 |       4     17
grg   uuxux |     -20    -128     662      39     11 |      -2     12
igr   xxxxx |      21      27      25      -3     10 |      -3     15
irf   xxxxx |      10     -13      41     -95     -9 |       3     16
jpl   uuuuu |      49      22     173     161     10 |       7     15
mit   uuuuu |     -11     -10     -23    -254    -12 |       8     18
ngs   uuuuu |     -14      14     -55     182     -2 |       6     13
sio   xxxxx |      78      70     -57    -284    -20 |      23     28

Table 7.1587.1   GPS week: 1587   Day: 1   MJD: 55354.500

                                                         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 |      20     -12     145     -19     10 |       0     13
emr   uuuuu |      63       8     -30     248      6 |      10     18
esa   uuuuu |      13     -51      90     203      8 |       4     12
gfz   uuuuu |       7      54       6     -88     -6 |       2     16
grg   uuxux |     -27     -28     197    -274    -11 |      -2     12
igr   xxxxx |      54      -4     -28      32      8 |      -4     14
irf   xxxxx |      28     -26      64     -50     -9 |       1     16
jpl   uuuuu |      65     -47     -69     -36    -12 |       6     14
mit   uuuuu |      22     -19     -14    -233    -15 |       6     17
ngs   uuuuu |     -90      55     -41     106      7 |       4     11
sio   xxxxx |     117      56     -39    -196    -20 |      20     26

Table 7.1587.2   GPS week: 1587   Day: 2   MJD: 55355.500

                                                         AC LOD  AC LOD
CENT  FLAG  |   Xpole   Ypole     Xrt     Yrt    LOD |    BIAS  BIAS RMS
            |   [uas]   [uas]   [uas/d] [uas/d]  [us]|    [us]    [us]
------------+----------------------------------------+------------------
cod   xxxxx |       3     -13     -31    -119      6 |       0     13
emr   uuuuu |      90      40     -88     231     -3 |       9     18
esa   uuuuu |       8     -20      90      79      7 |       3     12
gfz   uuuuu |     -12      64     -25    -119    -10 |       0     18
grg   uuxux |     -46     -36     242    -270     24 |      -5     16
igr   xxxxx |       9      19      39     -15      4 |      -5     14
irf   xxxxx |      15       6      15     -72      0 |      -3     18
jpl   uuuuu |      35     -31     209     -42    -12 |       4     16
mit   uuuuu |      10      24     -46    -175     -6 |       2     19
ngs   uuuuu |     -63     -66    -113     326      7 |       4     11
sio   xxxxx |     101      93     -94    -197    -14 |      15     25

Table 7.1587.3   GPS week: 1587   Day: 3   MJD: 55356.500

                                                         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 |      54     -33      59    -296     11 |       0     13
emr   uuuuu |      61      51    -232     234      1 |      10     18
esa   uuuuu |      -3     -25      60     141      2 |       3     12
gfz   uuuuu |     -10      56      80     -95     -5 |      -2     18
grg   uuxux |      -3     -57     192    -246     41 |      -1     15
igr   xxxxx |      26      12      11       3      6 |      -3     12
irf   xxxxx |      13      -5      31     -66     17 |      -4     18
jpl   uuuuu |      38      -3     142     -74      5 |       3     17
mit   uuuuu |     -12      -1     -27    -214      2 |       0     19
ngs   uuuuu |     -15     -15    -100     207     -3 |       4     12
sio   xxxxx |      79      77     -44    -214     -8 |      12     24

Table 7.1587.4   GPS week: 1587   Day: 4   MJD: 55357.500

                                                         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 |      50     -47     218     -14     -1 |       0     13
emr   uuuuu |      76      27    -209     339     -1 |       8     16
esa   uuuuu |     -36     -10      55      -2      1 |       2     11
gfz   uuuuu |      -4      50      11     -17      2 |      -6     17
grg   uuxux |     -38     -90     308    -171     14 |       1     18
igr   xxxxx |     -25      17     -83     -51      3 |      -2     12
irf   xxxxx |      10     -11      56       2     35 |      -6     17
jpl   uuuuu |      30     -56      86      13      0 |       2     16
mit   uuuuu |      -9      -3      69     -88      6 |      -4     17
ngs   uuuuu |      36      26    -127      61     -3 |       2     10
sio   xxxxx |      77      58      31      -3     -4 |       8     20

Table 7.1587.5   GPS week: 1587   Day: 5   MJD: 55358.500

                                                         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     -47      80      -7     -1 |       0     13
emr   uuuuu |      60      53    -101     252      1 |       8     16
esa   uuuuu |     -17     -26      37     -57      6 |       2     11
gfz   uuuuu |      -9      37      38     -71      0 |      -7     17
grg   uuxux |     -19     -52     249     -98    -30 |       4     18
igr   xxxxx |      17      -2      29     -68     -1 |      -2     12
irf   xxxxx |      11      -6      86      13     51 |      -3     19
jpl   uuuuu |      74     -28      58      41      2 |       2     16
mit   uuuuu |      -2       2      89     -52     10 |      -4     17
ngs   uuuuu |     -34       9    -186     115     -9 |       1     10
sio   xxxxx |      83      73      62     -84      7 |       6     18

Table 7.1587.6   GPS week: 1587   Day: 6   MJD: 55359.500

                                                         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       2      72    -101     -2 |       3     13
emr   uuuuu |      30      36     -17     104     13 |      10     18
esa   uuuuu |     -22       3    -152       3      3 |       4     14
gfz   uuuuu |     -34      45       7     -48     -1 |      -7     17
grg   uuxux |      -2     -53     333    -211    -24 |       4     18
igr   xxxxx |       1      45     -15     -95      5 |      -1     12
irf   xxxxx |      11      21       3      22     60 |       3     28
jpl   uuuuu |      49      13     297    -130     13 |       4     17
mit   uuuuu |       2      32     -35     -13      9 |      -3     18
ngs   uuuuu |      24     -78      97     164    -12 |       2     10
sio   xxxxx |      78      87    -131       6      5 |       6     19



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