[IGSREPORT-18791] Wk 1591 IGS Final Orbits

Jim Ray igs.acc at noaa.gov
Thu Jul 22 04:36:24 PDT 2010


Author:  AC Coordinator / NOAA NGS

sum-file Version 2.0
Final IGS Orbit Combination - Week 1591   (Jul 04, 2010 - Jul 10, 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:

igs1591[0-6].sp3  IGS GPS ephemeris files in SP3 format.
igs1591[0-6].clk  IGS GPS satellite and station clocks in clock RINEX format.
igs1591[0-6].cls  IGS GPS clock combination summary report.
igs15917.erp      Earth Rotation Parameters (ERP) and their rates as well as
                  Universal Time (UT1-UTC) and Length Of Day (LOD) associated 
                  with IGS ephemerides.
igs15917.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   | DGAR
                0  |  EMR   | 30 30
                0  |  ESA   | KOKB DGAR IRKJ KOKB
                0  |  GFZ   | 32 COCO HARB KOKB MDVJ SUTH WTZR
                0  |  GRG   | DGAR IRKJ ONSA WTZR
                0  |  JPL   | 30 32
                0  |  MIT   | 25 30 25 30
                1  |  ALL   | 1 1
                1  |  COD   | SOFI WHIT
                1  |  EMR   | 30 30 WTZR WTZR
                1  |  ESA   | WHIT BAKE CEDU IRKJ KOUC WHIT
                1  |  GFZ   | DGAR MDVJ PRDS SUTH UNSA
                1  |  GRG   | IRKJ ONSA
                1  |  JPL   | 6 32 HARB
                1  |  MIT   | 30 30 NYA1
                2  |  ALL   | 1 1
                2  |  COD   | DGAR
                2  |  EMR   | 30 30 WTZR WTZR
                2  |  ESA   | KERG DGAR IRKJ KERG UNSA
                2  |  GFZ   | HARB SUTH
                2  |  GRG   | DGAR IRKJ ONSA
                2  |  JPL   | 32 HLFX
                2  |  MIT   | 25 30 25 30
                3  |  ALL   | 1
                3  |  COD   | DAV1 MDVJ DAV1 DGAR MDVJ
                3  |  EMR   | 30 30 WTZR WTZR
                3  |  ESA   | DGAR IRKJ
                3  |  GFZ   | HYDE SUTH UNSA
                3  |  GRG   | DGAR HYDE IRKJ ONSA SANT
                3  |  JPL   | 30 32
                3  |  MIT   | 25 30 25 30 HYDE NTUS FLIN GODE HYDE NTUS
                4  |  COD   | DGAR
                4  |  EMR   | WTZR WTZR
                4  |  ESA   | DGAR IRKJ
                4  |  GFZ   | DAV1 GOLD HARB SUTH UNSA
                4  |  GRG   | DGAR IRKJ ONSA
                4  |  JPL   | 32
                4  |  MIT   | 25 25 GODE
                5  |  COD   | 30 30 DGAR
                5  |  EMR   | WTZR WTZR
                5  |  ESA   | 30 30 KOKB DGAR IRKJ
                5  |  GFZ   | 21 MDVJ UNSA
                5  |  GRG   | DGAR ONSA SANT
                5  |  JPL   | 21 32 SUTH
                5  |  MIT   | 25 25 ALGO ALGO GODE
                6  |  COD   | DGAR
                6  |  EMR   | 30 30 WTZR MATE WTZR
                6  |  ESA   | KOKB DGAR IRKJ
                6  |  GFZ   | 30 MDVJ UNSA
                6  |  GRG   | DGAR IRKJ ONSA SANT
                6  |  JPL   | 32
                6  |  MIT   | 1 25 30 1 25 30

 5. The following orbit solutions were excluded from the combination because 
    they were biasing the weighted average (generally indicated by long arc RMS).
    They were still used for statistics computation.
    
               Day | Centre | PRN list
               ----+--------+---------------
                4  |  GRG   |  25
                6  |  EMR   |   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 G25 |    |    |  1 |  2 |    |    |    |

 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  |    1.0    1.2    1.4     -13     -4    -22    -.39
       EMR  |    2.4     .8   -1.6      20      2     -2     .01
       ESA  |    2.9    1.7   -2.8      18     24   -100    -.14
       GFZ  |    -.6    1.6     .3      -1     34   -103    -.15
       GRG  |    6.2    7.8    4.2     -27      9    -25    -.11
       JPL  |    2.8     .8   -1.0     -28    -90    -68    -.37
       MIT  |    3.9    1.8    6.4      15    -10    -18    -.14
       NGS  |    7.4    -.2   11.2      -9    -72     16    -.35
       SIO  |    3.7   -2.3   -9.5     -22    -95     -1    -.04


 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 1.1591.a). It also displays the computed satellite
position sigmas for the combined orbits (table 1.1591.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 2.1591.[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 3.1591.[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 5.1591.0-6).

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 1591 summary.                       (Jul 04, 2010 - Jul 10, 2010)

Table 1.1591.a   GPS week: 1591   MJD: 55381.000-55387.000

         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  239|    0     0     0    25   -12    -2  -.18    7    7 |    -599    -267     14     60
        |    0     0     1    15    15    23   .02           |     239     428
emr   90|    0    -1    -6   -59     0    10   .38   16   16 |   -2293   -1156     16     95
        |    2     1     1    26    29    20   .03           |    4420    1151
esa  133|    1     0     3   -60  -107   -30   .32    8    8 |   -1877     700     12     98
        |    0     1     2    17    14    17   .03           |    1141    1136
gfz  197|    0     0     0     0  -127     1  -.13   10    9 |    -111     425     21     96
        |    0     0     0    43    53    10   .02           |     387    1122
grg  125|    1     2     8    35   -30     6   .64   16   14 |    -172     145     56    202
        |    1     1     1    31    28     8   .03           |     264     542
igr  n/a|    0     0     0     3    -8    11   .01    5    5 |   -4194   -1634     17     69
        |    0     0     1    26    15    19   .01           |    5921    1619
jpl  119|    0     0    -5    52   167    53   .49   18   16 |    -442   -1330     17    105
        |    1     1     2    24    14    13   .03           |    4868    1423
mit  260|    0     0    -2   -39    -1    18  -.33   10    9 |    -304     403     19    152
        |    0     1     0    27    31    12   .02           |     273     531
ngs  217|    0     0     1    40   145    -9  -.17   11    9 |  -50961  233130   2035   3826
        |    1     0     1    40    29    15   .03           |  133299  617784
sio  260|   -4     1    -3    74   177   -14  -.41   18   18 |     ---     ---    ---    ---
        |    0     0     1    31    34     6   .03           |     ---     ---


Table 1.1591.b   GPS week : 1591   MJD: 55381.000-55387.000   

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



Table 2: Daily transformation of each centre to the combined IGS orbit and
         clocks for each day of the week. The transformation displayed is the
         sum of a priori and estimated transformations.
         WRMS - RMS weighted by the centres SP3 header accuracy codes.
         STA  - Number of stations in the daily solutions.
   
Table 2.1591.0   GPS week: 1591   Day: 0   MJD: 55381.000                            

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  239|    0     0     0    34   -34   -35  -.20    8    8 |    -440    -326     16     64
        |                     -5    34                       |
emr   90|    1    -2    -5   -17   -16   -10   .33   15   15 |    2926     -16     16    115
        |                    -40    -7                       |
esa  133|    1     0     4   -48  -108     0   .31    7    7 |   -3690    1550     12    120
        |                    -19    59                       |
gfz  197|   -2     0     0    -3   -34     6  -.09    9    8 |      74     -94     23    105
        |                    -73    35                       |
grg  125|    4     2     7    67   -79    -1   .60   17   16 |      16      31     57    206
        |                     32    50                       |
igr  n/a|    0     0    -2    29   -17    28   .01    5    5 |    3586   -1128     18     80
        |                    -55    -5                       |
jpl  119|    0     1    -8    75   150    49   .50   18   16 |    5608    -416     18    111
        |                    -11   -35                       |
mit  260|    0     0    -1   -83    11    37  -.33    9    8 |    -241     343     20    192
        |                     26     8                       |
ngs  217|    0     0     1    50   103   -23  -.14   11    9 |    -227    -717   1793   3619
        |                    -55    -8                       |
sio  260|   -5     1    -5    35   223   -16  -.37   18   18 |     ---     ---    ---    ---
        |                   -104   -89                       |

Table 2.1591.1   GPS week: 1591   Day: 1   MJD: 55382.000                            

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  239|    0     0     0     4    -1     5  -.17    8    8 |    -612    -111     17     65
        |                     70   -55                       |
emr   90|   -2    -3    -6   -77    10   -17   .43   17   17 |    3025   -2878     15    112
        |                     23   -43                       |
esa  133|    2     1     4   -75   -88   -40   .38   10   10 |   -3042    -379     12     91
        |                     28    58                       |
gfz  197|   -1     0     1    58  -156    -1  -.10   10   10 |    -316     820     22     92
        |                    -58    27                       |
grg  125|    2     3     8   -15   -21     7   .62   18   15 |     -29     204     61    204
        |                    119   -87                       |
igr  n/a|   -1     0    -1    -9   -21   -23   .02    6    5 |    2613   -3942     19     54
        |                     -6   -17                       |
jpl  119|    2    -1    -2    24   177    35   .51   18   16 |    5335   -3349     17     84
        |                     37   -32                       |
mit  260|    0     0    -2    -1   -63    11  -.30   11    9 |       2     127     20    112
        |                      6    12                       |
ngs  217|    0     0     0   -17   176    19  -.21   12   11 | -353256 1634133   1811   3586
        |                     18   -80                       |
sio  260|   -4     0    -4   127   122   -11  -.41   18   18 |     ---     ---    ---    ---
        |                   -123   -76                       |

Table 2.1591.2   GPS week: 1591   Day: 2   MJD: 55383.000                            

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  239|    0     0    -1    30   -21   -29  -.19    7    7 |    -364    -385     14     61
        |                     17    22                       |
emr   90|   -1    -1    -7   -83    49    21   .34   16   16 |      17   -2351     14     77
        |                     23   -62                       |
esa  133|    2     0     6   -58  -109   -14   .32    8    7 |    -649     123     11     99
        |                      5    18                       |
gfz  197|    0     0     0    13  -151    17  -.13   10   10 |      75     183     22     94
        |                    -60    -5                       |
grg  125|    0     0     9    58   -18     3   .64   16   13 |    -101     334     53    209
        |                     58   -62                       |
igr  n/a|    0     0     0   -25   -16    19  -.00    6    5 |   -1416   -3503     15     68
        |                    -25   -20                       |
jpl  119|    1     0    -5    58   156    44   .43   18   16 |    2016   -3066     18    109
        |                    -20   -67                       |
mit  260|    0     0    -3   -29    -5    30  -.33   11    9 |     -83     497     19    169
        |                     13    25                       |
ngs  217|    0    -1     2    36   179   -19  -.21   12   10 |    -475    -301   2358   4002
        |                      6   -45                       |
sio  260|   -4     1    -4    69   189   -12  -.41   17   19 |     ---     ---    ---    ---
        |                    -99   -93                       |

Table 2.1591.3   GPS week: 1591   Day: 3   MJD: 55384.000                            

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  239|    0     0     0    51    11    21  -.16    6    6 |    -536    -204     15     65
        |                     11   -47                       |
emr   90|    0     0    -5   -32    26    18   .38   15   15 |   -2694    -806     15     86
        |                    -11   -36                       |
esa  133|    0     0     5   -76   -97   -39   .32    7    7 |   -2165    2453     13    100
        |                     -7    43                       |
gfz  197|    0    -1     0   -77  -186    -8  -.13   10    9 |    -194     521     24    111
        |                    -62    30                       |
grg  125|    1     0     8    57     2     0   .66   16   15 |    -382     550     48    209
        |                     72  -102                       |
igr  n/a|    0     0     0    30    -4    10  -.01    6    5 |   -5200   -1334     17     84
        |                    -82   -29                       |
jpl  119|    0     0    -3    88   175    70   .48   17   15 |   -1176    -886     18    114
        |                    -18   -66                       |
mit  260|    0     0    -3   -63   -13     3  -.33    9    8 |    -381     361     17    146
        |                     33    16                       |
ngs  217|    2     0     2   108   163    -9  -.17   11   10 |    -687     135   2035   4162
        |                   -143   -64                       |
sio  260|   -4     2    -2    56   160   -13  -.40   17   19 |     ---     ---    ---    ---
        |                   -105   -90                       |

Table 2.1591.4   GPS week: 1591   Day: 4   MJD: 55385.000                            

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  239|    0     0     0    17    -9     2  -.18    7    6 |    -817     123     14     53
        |                     22    28                       |
emr   90|    2    -2    -2   -55   -17    35   .39   17   17 |   -4714   -1666     17     79
        |                    -13    12                       |
esa  133|    0     0     1   -41   -99   -42   .27    8    8 |   -1554    1582     14    101
        |                    -35    45                       |
gfz  197|    0     0    -1   -13  -133     8  -.14    9    8 |     579   -1276     21     89
        |                    -67    15                       |
grg  125|    0     1     7     7   -55    25   .70   15   14 |    -161     472     58    207
        |                    107   -43                       |
igr  n/a|    0     0     0   -24   -20    30   .01    4    4 |   -7722   -1852     15     61
        |                    -42     6                       |
jpl  119|    0     0    -5    31   152    43   .49   18   16 |   -3245   -1721     18    101
        |                     -7   -75                       |
mit  260|    0     0    -2   -38    27     6  -.33   10    8 |    -759    1207     17    131
        |                     20    13                       |
ngs  217|    0     0     2    65   135   -10  -.15   10    9 |    -647    -114   2007   3556
        |                    -49     1                       |
sio  260|   -4     2    -1    73   213   -14  -.41   18   19 |     ---     ---    ---    ---
        |                   -106   -78                       |

Table 2.1591.5   GPS week: 1591   Day: 5   MJD: 55386.000                            

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  239|    0     0     0    15    -6    27  -.21    8    7 |    -410   -1120     15     58
        |                     35    -7                       |
emr   90|   -1    -1    -6   -90   -15    -2   .36   17   17 |   -7124    -262     19     93
        |                      7    30                       |
esa  133|    1     2     1   -39  -113   -48   .30    8    8 |    -927    -125     13     86
        |                    -21    64                       |
gfz  197|    0     0     0    39  -157   -12  -.16   10    9 |    -545    2466     21     90
        |                    -75    37                       |
grg  125|    0     1     8    18    -5     3   .65   13   12 |     109   -1017     63    193
        |                    112   -63                       |
igr  n/a|    0     0     0   -10    21    -4   .01    5    5 |  -10533     -47     18     64
        |                    -60   -28                       |
jpl  119|    0     2    -7    35   189    60   .53   18   16 |   -5743       1     18    105
        |                     -6   -68                       |
mit  260|    1    -1    -3   -37    21    15  -.35   11   11 |    -125    -498     24    162
        |                     13     3                       |
ngs  217|    0     0     1    13   147     1  -.19   10    8 |    -419   -1238   2424   4177
        |                    -11   -31                       |
sio  260|   -4     1    -2    56   160   -25  -.45   19   18 |     ---     ---    ---    ---
        |                   -105   -70                       |

Table 2.1591.6   GPS week: 1591   Day: 6   MJD: 55387.000                            

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  239|    0     0     1    23   -26    -9  -.19    7    6 |   -1018     153     12     60
        |                     39    23                       |
emr   90|    1     0    -7   -60   -33    27   .41   18   18 |   -7490    -114     21    108
        |                    -10    28                       |
esa  133|    0    -1    -1   -82  -132   -29   .32    9    8 |   -1114    -298     12     93
        |                     35    36                       |
gfz  197|   -1     0     0   -11   -74    -1  -.13   11   10 |    -454     361     19     96
        |                    -36    17                       |
grg  125|    1     3    11    52   -36     8   .63   15   13 |    -657     444     52    187
        |                     77   -49                       |
igr  n/a|    0     0    -1    35     0    19  -.00    6    6 |  -10687     366     18     73
        |                    -28   -32                       |
jpl  119|    0    -1    -4    50   173    70   .50   18   15 |   -5893     125     18    112
        |                      9   -55                       |
mit  260|    0    -1    -2   -18    10    23  -.31   10    9 |    -541     786     18    158
        |                     15     4                       |
ngs  217|    0     0     2    27   113   -21  -.15   10   10 |   -1021      12   1817   3685
        |                    -43    32                       |
sio  260|   -4     1    -2   103   175    -6  -.44   19   18 |     ---     ---    ---    ---
        |                   -131   -79                       |

       
       
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 3.1591.0   GPS week: 1591   Day: 0   MJD: 55381.000                            

        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
------+--------------------------------------------------------+---------------------------------------------------------
  X1E |    4  ---  ---  ---  ---  154  ---  ---  ---  ---    0 |    23  ---  ---  ---  ---   97  ---  ---  ---  ---    24
   2  |    5    9    7    9   10    5   13    9    9   27    3 |    30   34   37   34   37   30   33   31   31   24    31
   3  |    8   12    7    6   18    3   11    7    8   22    3 |    14   22   17   14   25   15   22   12   13   29    15
   4  |    7    9    9    5   13    7   10   12   10   26    3 |    30   28   31   27   34   26   25   32   28   39    28
   5  |    8   21    9    6   21    6   23   12   10   12    4 |    11   26   17   16   32   15   28   17   19   14    14
   6  |    7   10    6    7   17    3   12    8    8   16    3 |    21   27   24   23   34   22   27   17   20   28    22
   7  |   13   15    6    8   21    4   19    7    8   31    4 |    11   20   13   11   25   10   22   10   11   34     9
   8  |    6   13    6    6   19    5   13   10    9    9    3 |    14   21   18   16   26   13   20   12   15   13    13
   9  |    8   12    7    7   14    5   12    7   17   17    3 |    21   24   18   21   22   18   24   21   20   18    19
  10  |    6   13    3    9   13    6   11    9   10   11    3 |    19   24   20   15   26   14   23   18   21   18    17
  11  |    9   12    5    6    9    8   15    9    7   17    3 |    39   41   40   40   47   38   35   40   37   35    39
  12E |    7   16   10   11   29    6   24   10   12   16    4 |    15   20   20   17   26   17   21   17   14   22    15
  13  |    7   19    8   10   21    4   21   14   13   10    4 |    21   30   25   22   30   21   29   22   24   25    21
  14  |    8   16    7    8   20    4   16   10   10   12    3 |    15   26   22   18   29   17   24   20   19   21    17
  15E |   13   17    8   15   22    6   20   10   12   13    4 |    35   43   41   37   45   38   40   36   38   39    36
  16E |    8   18   10    9   18    5   23   10   12   15    4 |    20   28   25   29   20   21   24   21   22   26    20
  17  |    6   16    8    8   12    4   21   10   10   19    4 |    16   30   20   16   29   17   32   16   16   19    16
  18  |   12   20    8    9   16    4   21    7   15   20    4 |    20   27   10   10   25   13   27   13   15   23    13
  19  |    8   17    7    8   16    4   21    9   12   19    4 |    24   38   29   22   35   25   38   21   24   25    25
  20  |    6   18    7    7   18    5   22   10   10    8    4 |    14   23   13   11   22   14   22   15   14   16    12
  21  |   13   12    7    8   12    6   12    7    9   25    4 |    31   28   29   30   32   29   27   32   30   25    28
  22  |    7   15    7    9   14    3   16    6   11   12    3 |    19   25   17   17   32   17   26   16   20   22    17
  23  |    7   24    8   11   17    5   26   11   10   13    4 |    19   33   24   27   30   25   29   26   22   24    22
  24  |    8   12    5    8   16    4   14    7    9   25    3 |    28   33   38   36   39   33   35   31   33   33    33
 X25E |   44  ---   46  ---  ---   17  ---   51   34  ---   26 |   105  ---  120  ---  ---   89  ---   97   98  ---    91
  26  |    9   15    7    8   21    5   14    7   11   17    4 |    17   23   21   20   28   18   25   21   16   31    18
  27  |    5   10    8    8   13    5   12    5   19   15    3 |    19   23   18   20   23   18   24   18   21   19    18
  28E |    6   16   10    8   15    3   23    9   10   19    4 |    11   20   16   11   15   10   21   17   13   17    10
 X29  |   10   20    9    8   15    5   22   11   13  ---    4 |    17   32   24   18   28   21   35   21   22  ---    20
  30E |    9   18    8    8   18    6   18   12   15   21    4 |    34   45   39   35   48   35   46   32   31   35    35
  31  |    8   15    6    9   21    6   19    8    8   17    4 |    15   29   22   23   35   21   31   17   19   19    18
  32  |    8   19    8   11   12    6   18   12   10   10    4 |    15   26   17   19   21   16   22   17   17   17    16
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |    8   15    7    9   17    5   18    9   11   18      |T   23   28   26   21   30   25   27   23   23   24    22
 WRMS |    8   15    7    8   16    5   16    8    9   18      |NE  20   27   22   20   29   20   27   20   21   23    20
 MEDI |    8   15    7    8   16    5   18    9   10   17      |MD  19   27   22   20   29   18   26   20   20   24    18

Table 3.1591.1   GPS week: 1591   Day: 1   MJD: 55382.000                            

        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
------+--------------------------------------------------------+---------------------------------------------------------
  X1E |   13  ---  ---  ---  ---   23  ---   13   24  ---   11 |    12  ---  ---  ---  ---   40  ---   13   32  ---    18
   2  |    7   11    8    7    9    8   13    9   10   25    3 |    16   21   25   19   22   18   22   14   17   16    16
   3  |    5   13    8   10   16    5   15    9   13   23    4 |    14   20   17   14   22   14   25   13   18   27    16
   4  |    7   11   12    7   12    5   11   11   12   27    4 |    16   17   25   22   24   18   20   24   26   36    19
   5  |    8   21   12   11   17    5   21   12   12   13    4 |     9   23   16   16   28   11   26   15   13   12    11
   6  |    7   11    8   10   13    4   16   10   10   17    3 |    17   23   21   17   29   16   32   13   20   22    19
   7  |   14   18   15   10   20    9   20   10   15   31    5 |    13   22   16   14   23   12   22    9   13   34     9
   8  |    6   15   15   10   16    5   14    8   15   14    4 |    18   21   19   19   17   17   22   16   22   14    15
   9  |    6   15    8    9   19    5   13    6   10   16    3 |    16   23   17   16   23   16   22   15   13   14    15
  10  |    7   11    9    6    9    6   12    8    7   12    3 |    16   21   17   16   20   14   21   18   17   20    16
  11  |    8   13   11    9    9    7   15   11   18   12    4 |    28   31   30   31   35   28   31   30   33   28    28
  12E |    6   17   11   11   27    4   25   10    7   12    4 |    11   22   21   15   17   14   22   16   12   19    13
  13  |    9   22   12    8   22    8   18   15   12   11    5 |    16   31   20   19   33   16   28   20   18   19    17
  14  |    5   18    7   11   19    4   20   14   12   12    4 |    14   22   20   16   27   16   24   17   17   18    15
  15E |    8   23    9   17   21    5   21   12   12   11    5 |    21   31   26   30   32   24   29   22   20   25    21
  16E |    9   20   12   16   29    7   22   15   15   15    5 |    24   32   29   31   25   26   31   28   30   26    26
  17  |    7   20   10    8   17    5   23    8    8   18    4 |    12   28   17   14   25   15   30   11   15   18    14
  18  |    7   21    7   10   17    5   19    8   12   19    4 |    17   27   15   12   19   15   26   15   19   24    16
  19  |    9   19    9   10   18    5   23   14   13   20    5 |    24   37   31   28   35   29   38   29   30   30    28
  20  |    6   17   12    7   15    5   21   11   14   11    4 |    18   24   23   17   26   22   25   20   23   20    18
  21  |    9   12    8    9   13    5   11    8   11   24    4 |    20   21   16   20   19   18   21   24   23   18    20
  22  |    5   17    8    7   15    4   16    8   11   12    3 |    16   25   18   16   25   15   25   17   19   18    17
  23  |    9   24   11   12   20    6   24   10   14   14    5 |    25   37   31   28   32   27   33   27   24   27    26
  24  |    7   14   10    7   14    3    9   12   11   22    4 |    20   23   26   20   23   18   25   20   20   19    21
 X25E |    2  ---  ---  ---  ---   85  ---  ---  ---  ---    0 |   135  ---  ---  ---  ---  108  ---  ---  ---  ---   139
  26  |   10   18   12   10   22    5   13    8   12   16    4 |    13   21   19   18   24   16   23   15   15   23    13
  27  |    4   16    7   12   20    5   15    7    9   13    3 |    13   22   19   19   26   14   19   13   12   12    15
  28E |    6   15   13   12   19    5   21   14   12   19    4 |    11   18   17   15   19   10   19   17   14   13    10
 X29  |    9   21    9    7   12    5   24   12    9  ---    4 |    10   25   16   15   19   14   28   16   14  ---    13
  30E |    8   17    8   12   19    6   20   12   12   16    4 |    28   39   38   28   47   29   43   27   30   29    31
  31  |    6   18    9   13   19    5   20   11   10   16    4 |    14   28   18   16   33   16   28   15   17   18    16
 X32  |    8   17   10  ---   12    6   15   13   12   11    4 |    16   23   19  ---   23   18   26   17   21   17    16
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |    8   17   10   10   18    6   18   11   12   18      |T   20   25   21   19   25   21   26   18   19   21    21
 WRMS |    8   17   10   10   15    5   16    9   11   18      |NE  16   24   20   18   24   16   25   17   19   20    16
 MEDI |    7   17    9   10   17    5   18   11   12   16      |MD  16   23   19   17   24   16   25   17   19   19    16

Table 3.1591.2   GPS week: 1591   Day: 2   MJD: 55383.000                            

        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
------+--------------------------------------------------------+---------------------------------------------------------
  X1E |   13   22  ---  ---  ---   65  ---   14   23  ---   10 |    22   15  ---  ---  ---   58  ---   16   21  ---    19
   2  |    6   11    6   10    9    4   17    7   10   26    3 |    20   23   27   26   26   23   25   19   22   18    20
   3  |    7   10    6    9   15    4   12    8    9   23    3 |    15   17   19   13   24   14   20   13   17   27    16
   4  |    9    9    8    9   11    5   10    6   13   25    3 |    21   17   22   25   24   19   19   24   24   34    20
   5  |    6   18   10   11   19    4   18    9   10   13    4 |    10   22   16   15   28   10   23   13   13   12    11
   6  |    5   10    8   10   10    5   11    8    9   17    3 |    19   22   23   17   28   18   26   15   22   20    20
   7  |    8   17    5    9   16    6   20    8   10   30    4 |    12   22   12   13   23    9   22   10   15   35     9
   8  |    7   14    6    7   14    4   12    6    9   11    3 |    12   15   12   14   18   10   13   12   15   11     9
   9  |    7   13    8   11   11    5   12   10   16   15    3 |    13   17   16   17   20   12   19   13   20   13    13
  10  |    7   10    5    7   10    6   10   10    7   11    3 |    12   17   14   14   18   11   14   13   13   14    11
  11  |    7   12    8    9   12    5   18    8   10   12    3 |    29   32   42   35   42   31   30   32   30   27    31
  12E |    6   13    8   12   22    4   23    8   12   14    4 |    12   20   15   17   19   12   20   15   16   17    12
  13  |    7   17   11    9   19    4   24   16   11   14    4 |    14   24   18   14   30   14   29   22   20   21    16
  14  |    6   13    6   10   15    5   19   11   10   14    3 |    13   23   19   16   28   13   22   21   18   23    16
  15E |    7   17    7   18   19    5   22   15   16   17    5 |    20   25   22   25   31   18   26   19   24   22    18
  16E |    9   23    9   15   25    6   25   23   15   15    6 |    20   25   23   23   26   18   28   26   24   20    18
  17  |    8   20    7   13   16    4   26    9    8   18    4 |    12   29   17   21   28   14   32   12   14   18    14
  18  |    7   19    7    9   19    5   17    7   14   18    4 |    16   24   12   10   24   10   22   15   18   24    12
  19  |    7   19    7   12   15    2   23    9    9   17    4 |    23   37   27   27   36   26   38   25   23   26    25
  20  |    7   19   10    8   14   18   25   10   19   10    4 |    13   23   17   16   24   26   26   16   24   16    14
  21  |    7   12    6    9   11    4   14    6   11   24    3 |    24   21   20   25   25   22   24   26   27   20    22
  22  |    6   16    8   10   15    4   17    8   10   11    3 |    12   20   11   13   24    8   20   13   12   17    10
  23  |    7   20    7   11   18    4   25   10   11   14    4 |    81   83   83   87   84   83   80   83   81   82    81
  24  |    8    9    6    9   16    6    9   10    8   19    3 |    16   19   24   20   26   20   21   20   23   17    19
 X25E |   32  ---   19  ---  ---   34  ---   33   19  ---   16 |   118  ---  114  ---  ---  122  ---  110  113  ---   116
  26  |    9   17   11   11   26    5   13    9   14   13    4 |    12   22   16   19   30   13   21   14   18   20    13
  27  |    7   12    8   11   12    6   11   10   16   11    3 |    12   17   15   14   21   12   17   12   22   12    12
  28E |    7   14   12    9   14    6   23   14   15   23    4 |    12   17   13   13   18    9   20   16   21   15     8
 X29  |    6   20    9   10   11    5   22    9   12  ---    4 |    16   30   17   16   23   16   31   18   17  ---    16
  30E |    8   19    8   12   18    5   18   14   16   15    4 |    31   41   36   29   44   31   43   30   31   30    32
  31  |    7   16    8    9   20    6   23    7   11   17    4 |    10   25   13   12   32   11   26   12   14   14    11
  32  |    9   17    6   11   13    6   16   11   17   12    4 |    15   22   17   17   23   11   25   15   22   16    15
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |    7   16    8   10   16    6   18   11   12   17      |T   21   24   24   20   28   22   26   22   24   22    21
 WRMS |    7   16    7   10   13    5   16    9   10   19      |NE  15   22   18   17   25   15   23   16   19   19    15
 MEDI |    7   16    8   10   15    5   18    9   11   15      |MD  15   22   17   17   25   14   23   16   21   20    16

Table 3.1591.3   GPS week: 1591   Day: 3   MJD: 55384.000                            

        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
------+--------------------------------------------------------+---------------------------------------------------------
  X1E |   16  ---  ---  ---  ---   24  ---   17   23  ---   13 |    16  ---  ---  ---  ---   39  ---   18   26  ---    21
   2  |    5   11    6    7    8    5   11    6    9   26    3 |    25   26   26   24   28   23   27   23   24   22    23
   3  |    6   11    7    7   13    5   10    9    9   22    3 |    18   27   21   19   27   18   26   16   19   29    19
   4  |    8   10    7    9   13    4    9    7   10   26    3 |    23   23   28   26   29   23   23   24   23   35    23
   5  |    6   18    7    9   18    4   20   10   10   14    4 |    13   24   14   15   31   12   25   15   13   14    12
   6  |    5   10    6    9   12    5   10    8   11   15    3 |    21   29   24   22   29   20   28   17   26   23    22
   7  |    6   17    9   11   18    4   21    6    8   29    4 |    12   22   14   14   26   11   25   11   11   34    10
   8  |    4    9   11    8   12    4   10    7   12   13    3 |    14   15   14   13   21   12   19   17   19   13    14
   9  |    4   11    4   12   16    4    9    7   14   17    3 |    18   18   16   20   22   15   20   13   13   11    15
  10  |    5   10    7   10   10    5   10    7    8   12    3 |    13   16   16   16   18    9   18   14   12   12    12
  11  |    7   12    7    7   13    7   15    8    8   14    3 |    35   41   38   39   46   38   39   37   39   33    36
  12E |    5   17    8   12   21    6   21    7   11   15    4 |    13   21   15   18   19   13   21   12   13   17    11
  13  |    7   20   11   11   19    3   19   12   12   11    4 |    23   32   23   20   37   19   29   22   20   21    20
  14  |    6   14    6    5   17    4   17   10    9   12    3 |    18   25   21   18   31   17   24   21   16   20    19
  15E |    6   18    8   15   18    9   19   16   20   19    5 |    20   26   23   22   29   20   26   23   23   28    19
  16E |    8   18    7   12   22    5   23   14   13   13    4 |    33   36   31   37   28   32   33   33   36   33    32
  17  |    6   20    9    9   16    6   22   11   12   18    4 |    16   29   15   15   26   13   31   14   14   16    14
  18  |    6   19    6   10   20    4   18    5   14   18    4 |    18   27   12   14   26   13   26   17   23   25    15
  19  |    8   17    7    9   15    5   23    9   10   18    4 |    25   37   30   23   37   26   43   26   29   26    27
  20  |    7   20    9   13   18    8   20   10   11   12    4 |    21   26   19   19   29   18   26   21   16   21    18
  21  |    5    9    4    7   13    4   11    6   11   24    3 |    29   25   25   27   27   25   28   28   29   24    26
  22  |    5   14    7    7   18    5   15    6    8   11    3 |    16   22   15   13   28   12   23   15   14   16    14
  23E |   11   21    8   15   17   13   23   10    9   14    4 |    82   83   78   78   82   77   85   79   78   80    79
  24  |    7    9    4    5   16    6    9   12    7   19    3 |    24   27   28   25   28   25   28   25   27   24    25
 X25E |   27  ---   25  ---  ---   46  ---   25   24  ---   15 |    90  ---   98  ---  ---  101  ---   93   93  ---   101
  26  |    8   17    8    9   22    8   14    9   15   15    4 |    15   22   17   19   25   14   23   17   16   24    14
  27  |    4   11    6   10   13    4   10    8   13   14    3 |    17   17   16   17   22   15   20   13   11   10    14
  28E |    6   18    9    8   21    6   20   12   13   15    4 |    16   20   16   15   27   13   25   20   18   15    15
 X29  |    9   18    8    9   12    7   23   10   11  ---    4 |    16   28   16   16   23   14   30   20   16  ---    16
  30E |    8   18    8   11   16    7   17   11   15   15    4 |    34   44   37   33   47   31   46   32   33   31    35
  31  |    7   15    6    9   17    5   20    9   11   17    4 |    18   30   18   18   34   17   32   21   19   19    19
  32  |    8   15    9   11   13    4   18   11   10   12    4 |    18   23   22   21   27   17   27   18   16   19    18
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |    6   15    7   10   16    6   17    9   11   17      |T   24   28   25   22   30   23   29   24   24   23    23
 WRMS |    6   15    7    9   15    5   15    8   10   19      |NE  19   25   20   19   28   17   26   19   19   21    18
 MEDI |    6   15    7    9   16    5   17    9   11   15      |MD  18   26   21   19   28   17   26   20   19   22    19

Table 3.1591.4   GPS week: 1591   Day: 4   MJD: 55385.000                            

        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
------+--------------------------------------------------------+---------------------------------------------------------
  X1E |    3  ---  ---  ---  ---  259  ---  ---  ---  ---    0 |    37  ---  ---  ---  ---  357  ---  ---  ---  ---    36
   2  |    5    8    8    8   10    5   12    8   10   27    3 |    23   26   27   23   26   23   25   21   26   19    22
   3  |    7   13   10    7   14    4    9    8    8   22    3 |    24   31   29   21   30   22   28   22   26   31    25
   4  |    8    7    9    5   10    4   10    7    9   25    3 |    21   22   24   22   25   20   21   23   20   34    21
   5  |    6   22    8    8   18    4   22    8    9   14    4 |    14   27   17   15   33   13   27   13   16   12    13
   6  |    5   12    8    7   11    4   12    6    8   15    3 |    20   29   24   19   29   19   26   19   21   22    20
   7  |    7   15    9    6   14    4   20    7    9   30    4 |    13   23   16   15   23   12   23   16   16   39    13
   8  |    5   10   13    6   14    4   10    7   11   12    3 |    11   12   14   13   18   10   13   12   16   10    10
   9  |    6   13    8    6   14    4   13    7   11   15    3 |    14   19   17   18   20   13   20   14   14   11    13
  10  |    6   10    6    6   10    4   11    9    8   12    3 |    16   19   19   17   22   13   20   18   17   13    15
  11  |    5   13    7    9    9    6   14    9    8   17    3 |    28   35   31   32   38   30   30   30   30   26    29
  12E |    6   15    9   12   18    3   23    8    6   15    4 |    11   20   17   16   20   10   20    9   12   16    11
  13  |    6   26   12    8   14    4   18   13    9   10    4 |    18   34   27   23   31   21   24   17   20   18    18
  14  |    7   16    5    9   12    5   20   10   10   14    3 |    19   25   20   20   28   18   26   21   23   20    19
  15E |    7   20    6   19   17    6   20   15   13   24    5 |    14   24   18   23   27   15   21   20   18   29    15
  16E |    8   23    9   14   20    4   25   14   14   12    5 |    18   29   22   23   20   17   24   21   17   21    17
  17  |    7   19    9    8   15    5   23   14    9   17    4 |    16   28   16   16   30   15   30   17   13   16    14
  18  |    6   19    8    6   17    3   20    6   11   19    4 |    15   25   13   14   24   14   26   16   18   25    14
  19  |    7   21    6   10   14    4   20   12    9   18    4 |    21   38   25   21   36   22   37   22   24   19    23
  20  |    9   17   11   10   16    4   20    9   11   13    4 |    12   18   14   12   24   11   23   12   17   14    10
  21  |    5   12    5    9   11    4   12    8    8   25    3 |    25   25   20   25   23   21   22   25   23   22    22
  22  |    6   17    7   10   15    4   17    8   10   10    3 |    14   21   12   15   28   10   23   15   15   16    12
  23E |    9   25   11   13   31    7   25   11   12   14    5 |    39   49   39   39   40   41   44   39   36   42    37
  24  |    7    9    6    8   14    4   11   11    7   17    3 |    18   24   25   23   25   19   23   22   22   20    20
 X25E |   26  ---   37  --- 7677   23  ---   43   28  ---   19 |    80  ---   94  ---   17   90  ---   71   82  ---    88
  26  |    8   17    8    7   25    6   15   11   12   14    4 |    15   24   22   19   29   16   23   21   16   24    16
  27  |    4   11    7    8   13    5   11    8   10   14    3 |    12   14   14   16   21   11   19   14   13   10    12
  28E |    7   14    8    8   13    4   22    7    8   10    3 |    13   20   16   16   21   12   20   17   17   15    13
 X29  |    7   21   10    6   11    4   24   10    9  ---    4 |    15   31   14   14   26   15   31   18   15  ---    15
  30E |    7   22    9    9   10    5   19   10   11   18    4 |    31   44   37   33   45   33   48   31   32   32    34
  31  |    5   20    8   10   14    3   24    8   10   20    4 |    14   28   20   15   30   13   27   15   15   14    14
  32  |    7   16    7   11   12    4   15   10   10   14    3 |    13   21   17   13   24   13   22   16   14   17    14
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |    7   17    8    9   15    4   18   10   10   18      |T   20   26   23   19   26   30   25   20   21   20    20
 WRMS |    6   17    8    8   14    4   16    8    9   19      |NE  17   24   19   18   26   16   24   18   18   19    16
 MEDI |    7   16    8    8   14    4   18    9   10   15      |MD  16   25   20   18   26   15   23   18   17   19    15

Table 3.1591.5   GPS week: 1591   Day: 5   MJD: 55386.000                            

        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
------+--------------------------------------------------------+---------------------------------------------------------
  X1E |    3  ---  ---  ---  ---   97  ---  ---  ---  ---    0 |    38  ---  ---  ---  ---   98  ---  ---  ---  ---    37
   2  |    9    8    7    5   10    6   10   12   10   29    4 |    15   22   24   17   24   18   21   18   17   18    16
   3  |    7   12    5    8   12    5   15   10   11   22    3 |    23   31   26   22   30   25   33   21   24   36    24
   4  |    9   10    7    7   10    6    8    9    8   27    3 |    16   17   19   16   20   14   18   22   18   36    17
   5  |    6   20    9   12   15    5   21    9    8   14    4 |    12   25   18   14   30   14   27   13   13   14    12
   6  |    6   12    7    7   10    4   13   13   11   14    3 |    19   28   21   16   26   20   25   17   23   23    20
   7  |    6   16   11   10   17    5   21    9   11   33    5 |    14   25   23   16   23   13   25   15   16   39    13
   8  |    5   11    8    8   12    5   10    6    7   13    3 |    13   15   13   12   15    9   16   13   14   10     9
   9  |    6   14    7    7   12    4   13    7   10   13    3 |    17   23   17   17   22   16   23   16   17   14    16
  10  |    7   13    4   10    9    6   10   11    6   12    3 |    14   22   18   16   19   13   22   17   14   16    15
  11  |    8   11    6   12   11    6   13    9   13   20    4 |    26   36   29   29   33   29   33   27   35   23    28
  12E |    7   19    8    9   17    6   21   13   11   20    4 |    12   24   18   17   23   14   22   15   18   21    15
  13  |    7   21   10   12   20    5   25   12    9   13    4 |    19   31   24   23   36   18   28   19   20   19    20
  14  |   19   16   10    8   13    8   22   12    8   13    4 |    22   33   28   28   36   28   33   29   27   29    26
  15E |    8   22    5   17   14    6   22   16   11   27    5 |    15   26   22   28   24   18   25   21   13   35    16
  16E |    8   26   10   14   17    4   26   17   10   14    5 |    23   33   25   30   21   24   29   25   26   26    23
  17  |    7   17   11    5   17    7   20   12    9   18    4 |    11   26   15   12   27   15   26   12   16   16    11
  18  |    7   22   10   10   13    5   22    7    9   20    4 |    14   29   13   14   21   17   29   15   21   27    14
  19  |    7   18    8    9   14    6   22   11   11   18    4 |    26   42   35   27   40   33   43   29   32   27    30
  20  |    8   15    8   11   12    5   20   12   11   14    4 |    14   22   17   18   26   17   24   15   15   18    14
  21  |    4    9   12    7   10    6   17   10    7   27    4 |    19   20   22   19   18   17   23   21   24   20    18
  22  |    7   23    8    8   14    5   20    9    6   11    4 |    16   27   15   14   24   15   26   16   17   20    14
  23E |    9   23    8   13   15    3   27   11   12   18    5 |    25   38   27   27   35   28   37   23   26   25    26
  24  |    6    9    7    7   13    6    9   15    8   17    3 |    21   19   21   20   19   19   19   22   21   24    18
 X25E |   15  ---   29  ---  ---   27  ---   33   18  ---   14 |    57  ---   78  ---  ---   65  ---   51   56  ---    65
  26  |    8   17    8   11   13    5   14    9   10   13    4 |    16   25   18   21   23   15   24   15   12   20    14
  27  |    7   11    5    8   10    4   12    9    9   10    3 |    15   19   17   14   22   14   20   15   16   11    14
  28E |    5   15    6    8   13    5   19    7    9    8    3 |    13   19   10   12   18   11   21   15   15   16    12
 X29  |    8   24   11    8   10    6   27   10    6  ---    4 |    15   33   21   11   23   16   35   15   18  ---    17
  30E |   10   20   11   14   14    4   15   12   10   20    4 |    30   40   36   36   45   33   45   29   33   34    34
  31  |    6   18   10    8   16    4   20    9    6   20    4 |    16   30   23   20   31   19   31   19   20   18    18
  32  |    8   17    8    7   10    4   18   13   11   15    4 |    15   22   21   18   24   17   24   17   18   21    17
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |    8   17    8   10   13    5   18   11   10   19      |T   19   26   23   19   25   22   26   19   21   22    20
 WRMS |    7   17    8    9   12    5   16   11    8   18      |NE  16   25   20   17   25   17   25   17   19   21    16
 MEDI |    7   16    8    8   13    5   19   11   10   17      |MD  16   25   21   17   24   17   25   17   18   21    17

Table 3.1591.6   GPS week: 1591   Day: 6   MJD: 55387.000                            

        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
------+--------------------------------------------------------+---------------------------------------------------------
  X1E |   17   76  ---  ---  ---   33  ---   31   33  ---   18 |    25   43  ---  ---  ---   48  ---    7    9  ---    19
   2  |    6   12    7   14   16    6   11   15    9   29    4 |    30   33   36   33   32   29   31   32   30   28    30
   3  |    6   14    8   10   11    4   12    7   10   23    3 |    20   29   23   16   29   19   26   16   18   32    19
   4  |    8   16   12   11   16   11   10   21   13   25    5 |    38   41   41   40   38   37   37   37   41   43    37
   5  |    6   22   11    9   17    8   23   16   13   16    5 |    13   30   19   17   29   17   29   19   21   16    15
   6  |    5   13    7    8    9    3   10    7   11   16    3 |    19   27   21   15   30   18   25   16   18   21    18
   7  |    4   18    7   10   16    9   20    9   12   35    4 |    14   26   19   17   26   15   25   17   15   37    13
   8  |    3   13    7    8   13    8    9    8   10   16    3 |    17   18   23   19   19   17   19   20   18   16    16
   9  |    5   15    7    9   14    3   10    6   10   12    3 |    16   18   17   15   25   15   21   15   16   13    15
  10  |    5   11    7    8   11    6    9   11    7   15    3 |    19   24   23   20   25   18   21   21   22   17    19
  11  |    7   13    9    9   12    6   15    8    7   22    3 |    43   46   47   46   55   43   43   44   47   37    44
  12E |    5   19    9   15   23    5   24    9    5   16    4 |    11   25   14   17   17   12   20   16   13   21    12
  13  |    6   18   10   14   16    4   19   15    9   13    4 |    23   32   26   24   34   24   31   24   24   21    22
  14E |   16   21   10   13   25    7   17   11   10   13    5 |    64   73   74   72   78   67   71   74   74   69    70
  15E |    6   22    9   14   18    6   23    8   10   18    4 |    25   32   31   23   36   26   32   26   27   31    26
  16E |    8   24   10   16   11    5   23   10   12   15    4 |    29   32   31   33   34   28   32   29   33   32    28
  17  |    6   22    7   10   19    5   20    7    7   18    4 |    18   32   17   18   28   19   31   17   19   24    17
  18  |    6   23    8    8   16    5   22    7   12   19    4 |    16   29   12   14   24   15   29   17   20   27    14
  19  |    8   21    7    7   14    3   24    9   11   19    4 |    27   44   36   28   44   31   44   30   29   30    31
  20  |    6   19    9   12   14    5   21   10   13   13    4 |    19   25   21   22   30   21   29   22   21   22    18
  21  |    5    8    7    8   10    6   13    8    9   27    3 |    32   28   30   34   32   30   31   33   32   28    30
  22  |    6   20   12    9   17    5   19    8   11   14    4 |    15   26   14   18   24   15   27   19   18   21    15
  23E |    8   17    9   15   12    5   26   11   12   17    4 |    46   50   45   42   52   45   55   45   47   46    44
  24  |    6   10    6    9   15    3    9   11   10   18    3 |    27   26   27   29   32   25   27   25   27   31    26
 X25E |   21  ---   22  ---  ---   29  ---   27   14  ---   12 |    61  ---   59  ---  ---   68  ---   59   48  ---    63
  26  |    8   21    8   12   19    6   17   11   12   14    4 |    17   28   20   20   26   16   24   19   16   21    16
  27  |    3   12    8   10   12    5   10    7    9    9    3 |    12   16   17   13   23   13   17   14   14   11    12
  28E |    6   19    6   11   15    6   23    6    8   10    3 |    12   20   14   14   16   13   20   15   13   17    11
 X29  |    6   22   11    7   12    4   27   10   10  ---    4 |    17   36   22   18   28   20   37   19   19  ---    19
  30E |    9   22    8   18   17    5   19   11   10   15    4 |    35   46   40   40   54   39   50   34   33   36    37
  31  |    8   23   11   10   13    2   23    6    8   19    4 |    18   31   21   23   30   19   28   17   19   19    17
  32  |    7   15    6    9   10    7   17   11   10   15    3 |    17   22   21   17   26   18   24   21   19   23    18
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |    7   18    9   11   15    6   18   10   10   18      |T   24   31   27   25   32   26   31   25   25   27    24
 WRMS |    6   18    8   10   13    6   15    9   10   18      |NE  21   29   24   22   29   21   28   22   22   24    20
 MEDI |    6   19    8   10   14    5   19    9   10   16      |MD  19   29   23   20   29   19   29   20   20   24    19



Table 4: Precise Navigation Summary.

         Weekly station RMS w.r.t. the estimated coordinates for the Latitude,
         Longitude and Height components.  See Table 5 for the daily summary.

         CLK  - Satellite clocks used.
         EPO  - Mean number of satellite clock epochs available in the daily
                solutions.
         Units: mm.

Table 4.1591   GPS week: 1591   MJD: 55381.0-55387.0

CENT| CLK EPO  |        BRUS       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3052 |U   10    10    25 |U    6     8    23 |U    9    11    26 |
emr | emr 2903 |    12    13    34 |U    7     8    23 |     9    10    24 |
esa | esa 2962 |    10    10    31 |U    6    11    23 |     9     9    23 |
gfz | gfz 2861 |U   10    10    31 |U    6    10    19 |U    9     9    23 |
grg | grg 2893 |   560  3333  5283 |U    9    11    39 |    11    13    26 |
igr | igr 2931 |    10    10    31 |     6     8    19 |     9     9    23 |
igs | igs 2923 |     9    10    31 |    11     7    37 |     9     9    23 |
jpl | jpl 2867 |U   11    11    34 |     7    10    25 |U    9    10    23 |
mit | mit 3017 |U   16    13    39 |U    6     8    24 |U   10    11    27 |



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 5.1591.0   GPS week: 1591   Day: 0   MJD: 55381.0

CENT| CLK EPO  |        BRUS       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3055 |     7     8    29 |     6     8    20 |     8     8    17 |
emr | emr 2876 |    11    17    58 |     6     7    22 |     8     7    20 |
esa | esa 2976 |     9    15    46 |     6     7    21 |    10    10    19 |
gfz | gfz 2876 |     8    15    51 |     5     9    18 |     9     8    18 |
grg | grg 2880 |     8    14    47 |     9     9    36 |    11    11    24 |
igr | igr 2927 |     8    16    48 |     6     6    20 |     8     9    18 |
igs | igs 2888 |     8    14    48 |     5     6    20 |     9     8    19 |
jpl | jpl 2867 |     9    17    53 |     6     9    27 |     9    11    18 |
mit | mit 2976 |    15    13    43 |     5     5    23 |    10    11    23 |

Table 5.1591.1   GPS week: 1591   Day: 1   MJD: 55382.0

CENT| CLK EPO  |        BRUS       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3040 |    10    11    25 |     6    12    28 |    11    17    37 |
emr | emr 2876 |    14    13    28 |     6     9    22 |    11    11    25 |
esa | esa 2880 |    11    10    28 |     5    10    22 |    11    12    25 |
gfz | gfz 2780 |    11    11    27 |     6    12    22 |    11    14    26 |
grg | grg 2880 |    10    11    27 |     8    11    30 |    13    14    26 |
igr | igr 2880 |    11    10    26 |     6     9    21 |    11    13    26 |
igs | igs 2873 |    11    10    26 |     5     9    21 |    11    13    25 |
jpl | jpl 2849 |    12    11    28 |     7    10    27 |    11    12    23 |
mit | mit 2976 |    53    29    85 |     6     7    22 |    11    13    27 |

Table 5.1591.2   GPS week: 1591   Day: 2   MJD: 55383.0

CENT| CLK EPO  |        BRUS       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3055 |     7     7    17 |     8     7    22 |     8     8    21 |
emr | emr 2972 |    10    12    24 |     8     7    21 |     7     9    17 |
esa | esa 2976 |     8     8    21 |     6     8    17 |     9    10    20 |
gfz | gfz 2875 |     8     7    20 |     7     9    20 |     8    10    16 |
grg | grg 2880 |     9     9    22 |     9    14    33 |    10    11    18 |
igr | igr 2917 |     8     8    21 |     7     8    19 |     8    10    18 |
igs | igs 2960 |     8     7    21 |     6     8    20 |     8     9    17 |
jpl | jpl 2869 |     9     9    25 |     7     9    23 |     8    12    18 |
mit | mit 3072 |     7     7    21 |     8    10    24 |    10    10    23 |

Table 5.1591.3   GPS week: 1591   Day: 3   MJD: 55384.0

CENT| CLK EPO  |        BRUS       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3049 |    10    11    25 |     8    10    33 |    12    13    34 |
emr | emr 2875 |     9    11    23 |     8    13    34 |     8     6    21 |
esa | esa 2976 |     8     7    20 |     9    26    46 |     8     7    26 |
gfz | gfz 2874 |     8     8    19 |     6    12    23 |     8     8    23 |
grg | grg 2880 |     8     7    22 |     7    12    33 |     9    10    28 |
igr | igr 2973 |     8     7    20 |     6    13    25 |     7     8    23 |
igs | igs 2870 |     8     8    19 |    40     9   130 |     8     8    25 |
jpl | jpl 2866 |     8     8    25 |     9    15    30 |     8     8    22 |
mit | mit 3072 |     7     7    20 |     6     9    28 |    10    14    27 |

Table 5.1591.4   GPS week: 1591   Day: 4   MJD: 55385.0

CENT| CLK EPO  |        BRUS       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3061 |  ----  ----  ---- |  ----  ----  ---- |  ----  ----  ---- |
emr | emr 2876 |    12    12    32 |     6     7    16 |    11    13    35 |
esa | esa 2976 |    11    11    41 |     7    10    19 |     9     6    32 |
gfz | gfz 2876 |    11    10    29 |     7    10    18 |    10     6    32 |
grg | grg 2976 |  3860 23266 36780 |    13    16    73 |    15    16    43 |
igr | igr 2940 |    11    11    40 |     7    10    17 |    10     6    32 |
igs | igs 2946 |    11    12    41 |     7     9    20 |    10     7    31 |
jpl | jpl 2876 |    12    10    36 |     8    10    24 |     9     8    31 |
mit | mit 2976 |    10    12    38 |     8     9    22 |    11     9    34 |

Table 5.1591.5   GPS week: 1591   Day: 5   MJD: 55386.0

CENT| CLK EPO  |        BRUS       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3048 |     9    13    32 |     4     4    14 |     9    10    28 |
emr | emr 2876 |    12    15    38 |     7     7    21 |     9    12    29 |
esa | esa 2976 |     9    13    37 |     4     6    13 |    10     9    27 |
gfz | gfz 2875 |    10    12    42 |     4     7    15 |    11    10    28 |
grg | grg 2880 |     9    18    59 |     7     6    29 |    11    10    28 |
igr | igr 2930 |     9    13    38 |     4     4    13 |    10    10    27 |
igs | igs 2939 |     9    12    36 |     4     5    13 |     9    10    27 |
jpl | jpl 2873 |     9    14    39 |     5     7    20 |    10    10    28 |
mit | mit 2976 |     7    11    34 |     5     6    28 |    12    13    31 |

Table 5.1591.6   GPS week: 1591   Day: 6   MJD: 55387.0

CENT| CLK EPO  |        BRUS       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3058 |    14     7    25 |  ----  ----  ---- |     7     9    18 |
emr | emr 2971 |    17    11    35 |  ----  ----  ---- |     7    13    23 |
esa | esa 2976 |    14     9    28 |  ----  ----  ---- |     7     9    16 |
gfz | gfz 2876 |    14     8    27 |  ----  ----  ---- |     6     9    20 |
grg | grg 2880 |    14     9    26 |  ----  ----  ---- |     8    16    18 |
igr | igr 2950 |    14     9    28 |  ----  ----  ---- |     7     9    18 |
igs | igs 2988 |    13     8    25 |  ----  ----  ---- |     6     9    16 |
jpl | jpl 2873 |    14     9    30 |  ----  ----  ---- |     7    12    22 |
mit | mit 3072 |    14    10    31 |  ----  ----  ---- |     9    11    23 |


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 6.1591   GPS week: 1591   MJD: 55381.500-55387.500

                                                         AC LOD  AC LOD
CENT  FLAG  |   Xpole   Ypole     Xrt     Yrt    LOD |    BIAS  BIAS RMS
            |   [uas]   [uas]   [uas/d] [uas/d]  [us]|    [us]    [us]
------------+----------------------------------------+------------------
cod   xxxxx |      -4     -41     -46      61      5 |       1     14
            |      32      14      43      85      8 |       2
emr   uuuuu |       6     -11      74      90     -8 |      24     31
            |      28      14     121     131      7 |       5
esa   uuuuu |     -51     -12      31    -110      2 |      10     20
            |      14      19      33      80      6 |       2
gfz   uuuuu |     -27      47     -62     -60      2 |       9     20
            |      14      13      67      55      8 |       2
grg   uuuux |      46     -97     117     -65      7 |       2     18
            |      40      28      76     103     11 |       2
igr   xxxxx |      13      28     -13      92     -1 |      -1     16
            |      15      16     100      59      4 |       2
irf   xxxxx |      -5     -14     -16     -57      0 |      -3     19
            |      13      13      73      31      6 |       4
jpl   uuuuu |      52     -12      90     157    -10 |       8     22
            |      19      14      77      37     15 |       7
mit   uuuuu |     -16     -32     -41    -181     -2 |       4     19
            |      19      22     110      34      7 |       4
ngs   uuuuu |      23      25     -62     243      3 |       4     11
            |      31      44     100     113      6 |       1
sio   uuuuu |      77      96     -26     147     -2 |      13     23
            |      13      22     100      77      6 |       3


Table 7.1591.0   GPS week: 1591   Day: 0   MJD: 55381.500

                                                         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     -25     -21     188      9 |       0     16
emr   uuuuu |      21      10     -96     146    -14 |      31     37
esa   uuuuu |     -45     -11      56    -125     -2 |      11     23
gfz   uuuuu |     -21      43     -47      14      6 |      10     21
grg   uuuux |     -36     -62     224    -250      9 |       1     21
igr   xxxxx |      19      25      59      43      4 |       2     17
irf   xxxxx |      14     -30     -22     -60    -10 |       3     20
jpl   uuuuu |      49     -19     101     157     -7 |      17     25
mit   uuuuu |       6     -56     -72    -172    -13 |      11     23
ngs   uuuuu |      22      25      10     295     11 |       5     14
sio   uuuuu |     103      74     -80      96    -12 |      19     27

Table 7.1591.1   GPS week: 1591   Day: 1   MJD: 55382.500

                                                         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 |      40     -66     -87      57     13 |      -2     14
emr   uuuuu |      28     -19     189     317     -4 |      27     33
esa   uuuuu |     -73     -24     -24    -271     14 |       7     20
gfz   uuuuu |     -42      62      10    -111     13 |       7     19
grg   uuuux |      72    -115     115    -132     -9 |       2     20
igr   xxxxx |       2      10      88     145      0 |       0     16
irf   xxxxx |     -15       4    -125    -103     -3 |      -2     19
jpl   uuuuu |      17     -33     229     184    -12 |      13     22
mit   uuuuu |     -27      -2    -216    -232     -6 |       6     20
ngs   uuuuu |      65     -14      50     436     -2 |       3     11
sio   uuuuu |      61     127    -144      37     -3 |      14     24

Table 7.1591.2   GPS week: 1591   Day: 2   MJD: 55383.500

                                                         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 |     -43     -24       4      13     10 |       0     14
emr   uuuuu |      41     -30     164     184    -14 |      26     33
esa   uuuuu |     -39     -12      53    -118      6 |      10     21
gfz   uuuuu |     -16      53    -109     -70      7 |       9     20
grg   uuuux |      41     -65     127     -18     25 |       0     20
igr   xxxxx |      -1      18     -19     112     -6 |       0     15
irf   xxxxx |     -21      -7     -56     -90      2 |      -2     19
jpl   uuuuu |      46      13     128     140    -39 |      12     21
mit   uuuuu |     -46     -20     -82    -212      0 |       6     20
ngs   uuuuu |      24     -13     -86     266      7 |       4     11
sio   uuuuu |      72      92     -66     131      0 |      15     25

Table 7.1591.3   GPS week: 1591   Day: 3   MJD: 55384.500

                                                         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     -40     -30       0      9 |       1     13
emr   uuuuu |      22     -18      47     -24    -16 |      25     32
esa   uuuuu |     -57     -22      16     -61     -4 |      11     20
gfz   uuuuu |     -44      33      31     -49      5 |      10     20
grg   uuuux |      88    -101     145      32     -3 |      -2     18
igr   xxxxx |      15      53    -160      72     -6 |      -1     17
irf   xxxxx |     -14     -29       3     -48     -2 |      -3     20
jpl   uuuuu |      52     -11     104     124    -12 |       7     25
mit   uuuuu |     -30     -62     -23    -141     -7 |       5     20
ngs   uuuuu |      50     114    -167     183      6 |       4     10
sio   uuuuu |      76      76     -51     166     -7 |      14     25

Table 7.1591.4   GPS week: 1591   Day: 4   MJD: 55385.500

                                                         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 |     -27     -44     -86     174      4 |       2     14
emr   uuuuu |     -11      -9      64     -40     -3 |      23     31
esa   uuuuu |     -44      13      12    -112      2 |      10     20
gfz   uuuuu |     -14      45     -92     -86      1 |      11     21
grg   uuuux |      44    -129     166     -13     12 |       0     16
igr   xxxxx |      -5      20     -39      14      3 |      -2     17
irf   xxxxx |       1     -22      36     -13      4 |      -4     19
jpl   uuuuu |      76     -15      52     104     -6 |       5     24
mit   uuuuu |     -12     -42      52    -140      2 |       3     20
ngs   uuuuu |       0      27    -160     256      0 |       5     11
sio   uuuuu |      79      84      88     256      2 |      13     23

Table 7.1591.5   GPS week: 1591   Day: 5   MJD: 55386.500

                                                         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 |       7     -46     -99       6     -4 |       4     14
emr   uuuuu |     -30     -18     -59      15     -5 |      22     30
esa   uuuuu |     -64      10      29     -31     -1 |      11     21
gfz   uuuuu |     -37      64     -69       9    -11 |      11     21
grg   uuuux |      63    -123      50    -106      6 |       4     16
igr   xxxxx |      28      49    -116     184      3 |      -1     17
irf   xxxxx |       0     -11     103     -34      4 |      -4     19
jpl   uuuuu |      68      -5      16     209     11 |       3     23
mit   uuuuu |      -3     -24     129    -187      2 |       3     19
ngs   uuuuu |      31       0    -142      69      0 |       6     12
sio   uuuuu |      70      94     138     231      1 |      12     23

Table 7.1591.6   GPS week: 1591   Day: 6   MJD: 55387.500

                                                         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     -44      -3     -13     -7 |       0     12
emr   uuuuu |     -25       5     212      29      1 |      16     22
esa   uuuuu |     -33     -40      75     -51      0 |       7     16
gfz   uuuuu |     -14      31    -160    -128     -5 |       6     15
grg   uuuux |      52     -82      -8      30     11 |       5     16
igr   xxxxx |      35      23      97      73     -4 |      -6     13
irf   xxxxx |       3      -5     -53     -54      9 |      -9     16
jpl   uuuuu |      58     -14       2     179      0 |      -2     17
mit   uuuuu |      -1     -20     -78    -182      7 |      -2     13
ngs   uuuuu |     -29      38      58     196     -5 |       3     10
sio   uuuuu |      82     126     -64     115      7 |       7     15



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