[IGSREPORT-18948] Wk 1598 IGS Final Orbits

Jim Ray igs.acc at noaa.gov
Thu Sep 9 09:18:31 PDT 2010


Author:  AC Coordinator / NOAA NGS

sum-file Version 2.0
Final IGS Orbit Combination - Week 1598   (Aug 22, 2010 - Aug 28, 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:

igs1598[0-6].sp3  IGS GPS ephemeris files in SP3 format.
igs1598[0-6].clk  IGS GPS satellite and station clocks in clock RINEX format.
igs1598[0-6].cls  IGS GPS clock combination summary report.
igs15987.erp      Earth Rotation Parameters (ERP) and their rates as well as
                  Universal Time (UT1-UTC) and Length Of Day (LOD) associated 
                  with IGS ephemerides.
igs15987.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   | COCO
                0  |  EMR   | 3 WTZR WTZR
                0  |  ESA   | IRKJ UNSA
                0  |  GFZ   | 1 KERG KOUR MDVJ WILL
                0  |  GRG   | DGAR IRKJ ONSA
                0  |  JPL   | 32
                0  |  MIT   | 25 3 25
                1  |  ALL   | 1 1
                1  |  COD   | DGAR
                1  |  EMR   | 3 6 3 6 WTZR WTZR
                1  |  ESA   | IRKJ NICO SUTH UNSA
                1  |  GFZ   | 3 6 24 MDVJ
                1  |  GRG   | DGAR IRKJ ONSA
                1  |  JPL   | 26 32
                1  |  MIT   | 3 6 25 3 6 25 DRAO NICO
                2  |  ALL   | 1
                2  |  COD   | 19 25 19 21 NICO DGAR MCM4
                2  |  EMR   | 3 6 WTZR
                2  |  ESA   | WTZR DAV1 IRKJ SUTH UNSA
                2  |  GFZ   | 1 6 BRUS DRAO GRAS KERG MDVJ WILL
                2  |  GRG   | DGAR IRKJ NRC1 SANT
                2  |  JPL   | 3 32
                2  |  MIT   | 6 21 28 3 6 21 28 SPT0 FLIN NICO SPT0
                3  |  COD   | 1 1 MATE DGAR HOFN MATE
                3  |  EMR   | WTZR WTZR
                3  |  ESA   | SUTH
                3  |  GFZ   | 1 3 6 HARB MATE MDVJ UNSA
                3  |  GRG   | DGAR IRKJ ONSA
                3  |  JPL   | 32 TIXI
                3  |  MIT   | 3 6 19 25 3 6 25 DAV1 DAV1 HARB
                4  |  ALL   | 1 1 3
                4  |  COD   | DGAR YELL
                4  |  EMR   | WTZR WTZR YELL
                4  |  ESA   | SUTH UNSA
                4  |  GFZ   | 6 YAKT
                4  |  GRG   | DGAR IRKJ WTZR
                4  |  JPL   | 24 32 ZWE2
                4  |  MIT   | 6 24 6 24 MAW1 YAKT MAW1 TWTF YAKT
                5  |  ALL   | 1
                5  |  COD   | DGAR SOFI YELL
                5  |  EMR   | WTZR WTZR
                5  |  ESA   | SUTH UNSA
                5  |  GFZ   | 6 BOR1 DAV1 MDVJ PRDS
                5  |  GRG   | DGAR ONSA
                5  |  JPL   | 32
                5  |  MIT   | 6 25 26 6 25 26
                6  |  ALL   | 1
                6  |  COD   | DGAR
                6  |  EMR   | 3 WTZR HARB WTZR YELL
                6  |  ESA   | IRKJ SUTH
                6  |  GFZ   | 21 FAA1 MDVJ UNSA
                6  |  GRG   | DGAR IRKJ ONSA
                6  |  JPL   | 32 YELL
                6  |  MIT   | 3 6 10 28 3 6 10 21 28 DAEJ

 5. The following table lists all maneuvered satellites for this week.
    The solutions from COD and ESA, which modeled the maneuver, are used
    that day for combination. An associated accuracy code of 0 (unknown) 
    is given if only one AC is left (no redundancy). For the long arc  
    evaluation the arc is split into two parts at the given maneuver epoch.
    
               PRN |    Date    | Ref. NANU
               ----+------------+----------
               G03 | 2010_08_26 | 2010112 
               G03 | 2010_08_27 | 2010112 
               G14 | 2010_08_24 | 2010111 

 6. The following orbit solutions were excluded from the combination because 
    they were biasing the weighted average (generally indicated by long arc RMS).
    They were still used for statistics computation.
    
               Day | Centre | PRN list
               ----+--------+---------------
                3  |  EMR   |   1
                5  |  GFZ   |  26

 7. 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 G06 |  2 |    |    |    |    |    |  1 |

 8. 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.

 9. 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  |     .6    1.3    1.7      -6     -7    -17    -.45
       EMR  |   -2.3    7.8   -4.1       1      5    -13    -.07
       ESA  |   -1.1     .5    3.1      13     40    -46    -.15
       GFZ  |     .2    1.5    1.1      15      4    -50    -.24
       GRG  |     .9   11.6   -4.7     -18     40    -23    -.18
       JPL  |   -3.5    8.6  -11.9     -29     -7     23    -.21
       MIT  |    2.7   -2.8   10.1      15      3    -33    -.30
       NGS  |    2.8    6.6    9.6     116     -5    -13    -.27
       SIO  |    -.9     .5   -9.6       3    -17    -19    -.09


10. 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.

11. 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.

12. 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 1.1598.a). It also displays the computed satellite
position sigmas for the combined orbits (table 1.1598.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 2.1598.[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 3.1598.[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 5.1598.0-6).

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 1598 summary.                       (Aug 22, 2010 - Aug 28, 2010)

Table 1.1598.a   GPS week: 1598   MJD: 55430.000-55436.000

         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  233|    0     0     0    44    27   -35  -.22    8    7 |    -451    -139     16     68
        |    0     0     0    10    13    21   .02           |     445     701
emr   93|   -1     2    -5    11    22    17   .44   19   19 |   -5145    -311     16     80
        |    1     1     1    40    28    18   .03           |     807     955
esa  134|    0     0     1     4   -53   -21   .30    7    7 |   -1690    1097     13     98
        |    1     0     1    19    15    30   .03           |     810     623
gfz  197|    0     0     2    40   -47    15  -.21   10   10 |     133    -210     21    105
        |    1     1     2    68    53     7   .05           |     377     574
grg  126|    2     0     0    64   -61     0   .59   18   16 |  -54106  125278     57    215
        |    1     1     0    37    31    26   .06           |  142864  331583
igr  n/a|    0     0     1    39    27     7  -.03    5    5 |   -7860     145     18     56
        |    0     0     0    29    24    26   .04           |    1009    1048
jpl  125|    1     0    -9   105    35    65   .51   19   18 |    -999    -418     19    107
        |    1     1     1    17    10    49   .06           |    1000    1054
mit  263|    1    -1     0    10     2    20  -.28   11    9 |     -88      52     22    172
        |    0     0     2    20    22    17   .02           |     185     423
ngs  215|    0     0     2  -203    53    18  -.20   10    7 |    3888  -36590   2015   3458
        |    0     0     1    29    44    15   .04           |   17123  174244
sio  259|   -2     0    -1    18    48   -23  -.11   20   18 |     ---     ---    ---    ---
        |    1     1     1    23    32    16   .03           |     ---     ---


Table 1.1598.b   GPS week : 1598   MJD: 55430.000-55436.000   

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



Table 2: Daily transformation of each centre to the combined IGS orbit and
         clocks for each day of the week. The transformation displayed is the
         sum of a priori and estimated transformations.
         WRMS - RMS weighted by the centres SP3 header accuracy codes.
         STA  - Number of stations in the daily solutions.
   
Table 2.1598.0   GPS week: 1598   Day: 0   MJD: 55430.000                            

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  233|    0     0     0    35    31   -29  -.22    9    9 |    -568    -173     18     71
        |                     41    -2                       |
emr   93|   -1     5    -6   -23    -8   -12   .42   18   18 |   -5372    -696     18     71
        |                     12    -5                       |
esa  134|    0     0     1   -17   -53    -3   .30    7    7 |   -2506    1580     12     81
        |                     23     7                       |
gfz  197|    0    -1     0    93    54     3  -.24    9    9 |     179    -286     22     96
        |                    -23    -3                       |
grg  126|    1     0     0    40   -80   -23   .60   17   16 |    -226      89     58    218
        |                     71    94                       |
igr  n/a|    0     0     1    49    -3    -5  -.03    4    4 |   -9237    -475     17     46
        |                    -22   -19                       |
jpl  125|    2    -1   -10    99    28   147   .56   19   17 |    -916    -866     18    108
        |                     -6    63                       |
mit  263|    0     0     1    41    24    -6  -.31   11   10 |    -271      37     23    144
        |                     16    11                       |
ngs  215|    0     0     4  -233   -14     5  -.26   10    7 |    -399    -520   1812   2961
        |                     39    28                       |
sio  259|   -4     0    -2    61    23   -51  -.10   21   18 |     ---     ---    ---    ---
        |                    -54    32                       |

Table 2.1598.1   GPS week: 1598   Day: 1   MJD: 55431.000                            

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  233|    0    -1     0    54    43   -54  -.20    8    7 |    -703    -104     16     61
        |                     12     3                       |
emr   93|    0     1    -5   -44    -1    33   .44   21   21 |   -5248     237     20     91
        |                     14     4                       |
esa  134|    0     1     0     0   -45     2   .32    9    8 |   -1071     806     13     96
        |                     14    16                       |
gfz  197|    0     1     2   108   -35    10  -.23   10   10 |     760    -858     23    113
        |                    -51    -8                       |
grg  126|    1     1     0    72   -46   -27   .54   17   15 |    -320     -37     47    210
        |                     -4    41                       |
igr  n/a|    0    -1     2    31    30     4  -.01    6    5 |   -8968     597     18     59
        |                    -15   -41                       |
jpl  125|    1     0    -9   106    51    95   .60   19   18 |   -1033     269     18    118
        |                     -7    37                       |
mit  263|    0    -1     2    -7     0    23  -.27   12    8 |    -254      79     21    134
        |                     24     8                       |
ngs  215|    0     0     1  -227     8     1  -.21   10    7 |    -723     -17   2370   3953
        |                     38    38                       |
sio  259|   -3     0     0    23    28   -18  -.07   21   21 |     ---     ---    ---    ---
        |                    -54    27                       |

Table 2.1598.2   GPS week: 1598   Day: 2   MJD: 55432.000                            

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  233|    0    -1     1    40    43    -1  -.19    9    8 |    -116    -516     20     71
        |                     30     4                       |
emr   93|   -1     1    -4    -1    46    23   .50   18   18 |   -4775    1139     18     82
        |                     10    -1                       |
esa  134|   -2     0     0    29   -59   -80   .34    9    9 |   -3036    1269     16     94
        |                     22    22                       |
gfz  197|    1     1     1    44   -92    19  -.25   10   10 |     208    -336     21    103
        |                    -43    15                       |
grg  126|    1     0     0    48   -41    25   .52   18   18 |     -18     120     69    211
        |                     59    32                       |
igr  n/a|    0     0     1    35    35   -25   .03    6    5 |   -8076    1753     22     65
        |                    -21     9                       |
jpl  125|    1    -1    -6   106    31    88   .56   19   18 |    -458    1159     24     98
        |                     18    57                       |
mit  263|    1    -1     1    18    12     3  -.27   12    9 |    -193     333     25    163
        |                     18     9                       |
ngs  215|    0     0     2  -197    52    24  -.25   10    7 |   41546  153930   1977   3824
        |                    -38     6                       |
sio  259|   -1     0     0    25    50   -38  -.08   19   18 |     ---     ---    ---    ---
        |                    -39    25                       |

Table 2.1598.3   GPS week: 1598   Day: 3   MJD: 55433.000                            

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  233|    0     0     0    33    20   -66  -.26    8    7 |    -987     898     14     62
        |                     15     4                       |
emr   93|   -2     4    -3    42    23     9   .43   18   18 |   -3924    -557     15     82
        |                    -71   -20                       |
esa  134|    1     0     2    29   -38    10   .27    6    6 |   -1013    1819     13     98
        |                     28    -4                       |
gfz  197|   -1     0     4   -30   -91    18  -.28   11   11 |    -442     879     20    100
        |                    -45     1                       |
grg  126|    0     0     1    39   -15    10   .53   16   15 |    -189     400     62    231
        |                     44   -16                       |
igr  n/a|    0     0     1    30    22    10  -.05    5    5 |   -6690     -34     20     51
        |                    -33    -6                       |
jpl  125|    1     0   -10   116    36    46   .48   19   19 |     321    -772     20    108
        |                    -65   -65                       |
mit  263|    1     0    -1    -7   -10    27  -.29   12    9 |    -127     722     23    186
        |                     11     6                       |
ngs  215|    0     1     0  -177    62    11  -.21   10    8 |    -954     804   2239   3587
        |                     18   -13                       |
sio  259|   -1     1    -2    -3    33   -16  -.13   19   18 |     ---     ---    ---    ---
        |                    -45    31                       |

Table 2.1598.4   GPS week: 1598   Day: 4   MJD: 55434.000                            

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  233|    0     0     0    57    24   -20  -.22    6    6 |    -890     658     17     64
        |                     29    43                       |
emr   93|   -2     2    -6    56    62     3   .41   20   20 |   -4900   -1057     15     68
        |                    -66   -38                       |
esa  134|    1     0     1    -6   -84   -19   .29    7    7 |    -954      60     16    116
        |                      5    22                       |
gfz  197|    0     0     4   -51   -87    14  -.18   10   10 |     -68     -65     22    115
        |                    -60    13                       |
grg  126|    3     0     0    74  -100   -18   .68   16   15 |    -168      36     47    219
        |                      4    97                       |
igr  n/a|    0     0     1    75    70    -8  -.07    5    4 |   -7045    -618     18     62
        |                    -33   -14                       |
jpl  125|    0    -1   -10   109    41     2   .42   19   18 |    -757   -1189     18    111
        |                    -18  -128                       |
mit  263|    0    -2    -1    -1     4    17  -.27   11   10 |    -102      60     19    179
        |                     25     6                       |
ngs  215|    0     0     3  -159   108    42  -.19   10    8 |    -711     409   1995   3288
        |                    -35   -58                       |
sio  259|   -3     2    -1     5    77   -15  -.13   19   16 |     ---     ---    ---    ---
        |                    -31    24                       |

Table 2.1598.5   GPS week: 1598   Day: 5   MJD: 55435.000                            

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  233|    0     0     0    53    24   -43  -.24    7    7 |     -33    -748     16     77
        |                     -4   -20                       |
emr   93|    0     0    -8    57    41    32   .42   19   19 |   -5186   -1653     16     80
        |                    -48   -18                       |
esa  134|    0     0     3     9   -53   -35   .29    7    6 |   -1822    1512     10     97
        |                     24   -21                       |
gfz  197|   -1     2     2     3   -60    28  -.16   10    9 |     -52     -42     20    100
        |                    -39   -41                       |
grg  126|    3     2     0   141   -47    40   .62   21   18 | -378093  877239     60    205
        |                    -43    22                       |
igr  n/a|    0     0     1    64    32    15  -.01    4    4 |   -6928   -1263     15     60
        |                    -20   -49                       |
jpl  125|    0    -1    -9   129    42    60   .48   20   20 |   -1189   -1895     17    115
        |                    -41   -95                       |
mit  263|    1     0    -2    -3   -38    39  -.29   11    9 |     218    -242     21    208
        |                     15    17                       |
ngs  215|    0    -1     2  -193   101    10  -.14    9    7 |  -11698 -409685   1623   3367
        |                     31    -8                       |
sio  259|   -1     1    -2    -8    16     0  -.16   19   18 |     ---     ---    ---    ---
        |                    -33    22                       |

Table 2.1598.6   GPS week: 1598   Day: 6   MJD: 55436.000                            

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  233|    0    -1     0    34     6   -29  -.22    6    6 |     139    -991     15     74
        |                     48    69                       |
emr   93|   -3     1    -6    -4    -5    35   .45   19   19 |   -6614     405     16     90
        |                    -20    32                       |
esa  134|    0     1     3   -12   -37   -25   .26    6    6 |   -1434     633     11    108
        |                     18    28                       |
gfz  197|   -1     1    -1   115   -17    12  -.16   10   11 |     352    -764     21    108
        |                    -58   -12                       |
grg  126|    2    -1     0    32   -98    -8   .60   17   16 |     269    -900     58    212
        |                     69   144                       |
igr  n/a|    0     0     1   -14     4    59  -.06    6    5 |   -8080    1056     16     53
        |                     -7    28                       |
jpl  125|    2     0    -7    72    17    17   .46   19   19 |   -2967     362     19     97
        |                    -11   -64                       |
mit  263|    1     0     0    30    23    42  -.28   11   10 |     110    -625     26    192
        |                      5     8                       |
ngs  215|    0     0     3  -233    55    32  -.17   10    9 |     157   -1057   2094   3228
        |                     87    68                       |
sio  259|   -1     1     0    22   106   -24  -.11   21   18 |     ---     ---    ---    ---
        |                    -43    -6                       |

       
       
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 3.1598.0   GPS week: 1598   Day: 0   MJD: 55430.000                            

        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  ---  ---   26  ---   34  ---   19   19  ---   12 |    24  ---  ---   31  ---   35  ---   18   20  ---    19
   2  |    8   20    8    7   17    8   23   14    6   26    4 |    13   27   20   17   26   17   27   16   16   26    16
   3E |   13   14    9   11   20    4   19   19   12   24    5 |   100   97   95   98   99  101  101   83   90  101   103
   4  |    5   14    8    8    8    4   14    7    6   15    3 |    23   26   31   29   31   26   26   24   26   29    26
   5  |   10   18   10   12   13    3   20   10   10   25    4 |    26   30   32   32   38   30   32   27   32   29    29
   6E |   14   19   10   13   20    4   18   20   14   24    5 |   101  105  104  100  104  101  107  100  100  101   102
   7  |   17   21   10    9   28    6   22    9   11   22    5 |    20   30   27   23   39   20   28   18   24   17    21
   8  |    9   13    5    5   15    4   11    7   11   18    3 |    13   23   18   14   21   15   24   13   20   15    15
   9  |   11   13    5    7   14    3   11    8    8   22    3 |    19   23   19   15   21   17   25   19   18   20    16
  10  |    7   15    7    8   14    4   12    5    9   22    3 |    29   30   32   33   37   30   26   32   31   29    30
  11  |    8   14    8    7   18    4   17    9    5   15    3 |    22   31   27   21   41   23   30   23   25   21    23
  12  |    6   22    9   11   20    4   25    9   10   20    4 |    17   31   20   18   27   18   32   20   22   21    18
  13E |    6   19    6   11   16    3   19    9    7   20    4 |    20   27   27   23   34   23   33   23   24   24    23
  14E |    8   17    7    9   15    4   17   10    7   13    3 |     7   16   11    7   12    9   14    9   11   10     9
  15  |    8   24    6   11   19    5   21   13   11   13    4 |    15   27   19   15   25   15   28   19   22   22    17
  16  |   10   25   10   12   16    4   26   10    8   34    5 |    20   32   18   14   26   18   36   20   21   27    17
  17E |    7   17    5   10   15    4   21   16    7   12    4 |    17   27   21   20   30   18   28   15   19   16    18
  18  |   10   19    8   11   14    5   21    9   13   31    4 |    24   34   32   29   34   30   34   29   37   24    29
  19E |    9   16   10   10   27    5   23   12   10   14    4 |    37   45   44   35   43   37   47   37   38   38    39
  20  |    4   15    6   10   14    3   16    8    8   24    3 |    30   31   36   35   37   29   29   31   29   23    30
  21  |   11   24    8    9   16    5   25   16   12   21    5 |    25   40   29   22   42   26   40   27   30   20    27
  22  |   10   16    6    9   14    5   19   11    8   19    4 |    28   34   34   34   38   32   33   35   37   26    32
  23  |    8   20    4    8   16    4   19    8    9   21    4 |    15   26   19   15   28   16   28   15   17   22    16
  24  |    7   10    6    7   15    4   10   10    5   13    3 |    25   25   28   30   30   27   24   29   29   22    26
 X25  |   32  ---   13   17  ---   21  ---   22   27  ---   11 |    28  ---   27   20  ---   25  ---   22   30  ---    23
  26E |   17   19    8    8   23    5   16   21   20   25    6 |   139  142  136  142  136  138  140  135  134  137   136
  27  |   10   15    5    8   12    2   10    9    7   17    3 |    15   22   16   12   16   14   22   17   19   17    14
  28  |    8   20    6    9   17    4   21    8    8   25    4 |    14   29   21   17   28   17   29   14   21   17    17
 X29E |   13   22   11   10   15    7   28   19   15  ---    6 |    23   31   29   29   27   26   33   26   25  ---    24
  30  |    7   15    7    6   10    3   12   10    6   14    3 |    20   28   24   20   30   21   27   24   26   23    22
  31  |    6   23    7    9   19    3   19    8   10   13    4 |    16   28   22   19   29   18   26   16   20   18    18
  32  |    4   10    5    7   13    3   14    9   11   18    3 |    19   20   19   23   27   18   17   22   22   17    19
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |    9   18    7    9   17    4   19   11   10   21      |T   29   37   33   31   38   30   37   29   32   31    30
 WRMS |    9   18    7    9   16    4   17   10    7   18      |NE  20   28   24   22   30   22   28   22   24   22    21
 MEDI |    8   17    7    9   15    4   19   10    9   20      |MD  20   29   27   22   30   23   28   22   24   22    22

Table 3.1598.1   GPS week: 1598   Day: 1   MJD: 55431.000                            

        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  |   12  ---  ---   17  ---   34  ---   17  ---  ---   10 |    14  ---  ---   17  ---   41  ---   13  ---  ---    14
   2  |    6   26    8   10   21    9   22   10   10   24    4 |    11   28   17   15   26   16   28   14   14   27    13
   3E |    8   16   11   12   18    5   17   13   11   22    4 |    85   83   77   88   77   89   84   75   75   79    89
   4  |    4   19    5    8   10    5   12    5    6   17    3 |    19   25   24   19   25   21   25   20   20   28    20
   5  |    9   24    9   14   12    5   18    9   11   24    4 |    14   27   21   22   24   17   25   17   20   18    16
   6E |   14   24   12   16   20   14   21   40   23   36    8 |   111  117  114  112  121  118  122  110  121  121   113
   7  |    7   20   12   11   28    6   19    8   10   20    4 |    14   31   26   22   39   18   30   16   21   19    18
   8  |    6   17    7    6   15    4   11    8    9   15    3 |    12   25   20   14   20   15   23   14   16   16    14
   9  |    7   20    7    7   12    4   12   12    7   15    3 |    18   24   19   18   17   19   20   23   21   25    18
  10  |    7   17   12    8   13    5   13    6    9   21    3 |    16   20   26   22   24   18   19   20   19   19    18
  11  |    6   18    9   10   19    4   18    6    7   13    3 |    16   29   24   15   34   17   29   18   18   17    17
  12  |    5   23    8   12   24    5   23   12   10   22    4 |    17   30   19   20   31   18   31   19   17   19    16
  13E |    5   25    9    9   15    4   16   10    7   13    3 |    20   32   26   23   33   22   30   25   22   28    22
 X14E |    8   16   11   10  ---    4   18   10    8   20    4 |    14   20   19   11  ---   14   17   12   13   14    16
  15  |    9   33    5   11   16    5   22   14    8   12    4 |    12   30   19   18   21   16   25   19   18   22    15
  16  |    9   26   13   14   19    8   25    9    8   34    5 |    17   30   20   15   26   15   33   18   17   27    15
  17E |    7   19    9   10   26    6   24    9    9   10    4 |    16   28   23   17   29   18   27   16   20   20    18
  18  |    7   22    9   11   12    4   22   12    7   31    4 |    16   31   28   22   26   20   31   22   20   20    20
  19E |    8   19   11   11   15    5   27   12    9   13    4 |    28   35   35   30   34   27   37   30   29   29    29
  20  |    5   17    7   10   13    3   17    7    7   22    3 |    21   28   26   25   27   21   26   21   22   15    20
  21  |    7   26   16   10   21    6   28   10    9   22    5 |    23   38   32   25   43   25   41   25   27   19    26
  22  |    5   16    6   10   11    5   18   10    9   20    3 |    17   26   23   23   25   21   28   24   22   21    20
  23  |    7   23    8   10   16    4   16    9    9   19    4 |    12   24   17   15   26   12   22   15   11   19    12
  24  |    6   11    6    9   13    4   10    7    8   14    3 |    18   21   22   24   22   20   18   21   23   19    20
 X25  |   27  ---   19   25  ---   22  ---   25   23  ---   12 |    26  ---   33   33  ---   27  ---   17   25  ---    21
  26E |   18   22    7   11   20   10   14   16   15   22    5 |   138  139  134  137  133  137  133  142  139  138   137
 X27  |    8   21    7    7   16    4  ---   11    6   11    3 |    14   20   17   14   17   16  ---   21   20   20    15
  28  |    7   20    7   10   18    7   20    7    7   25    4 |    15   29   23   19   30   17   30   16   15   18    16
 X29E |    7   21   10    9   19    6   29   11    8  ---    5 |    19   27   23   20   21   19   27   22   21  ---    19
  30  |    5   18    7    6   10    4   12   12    7   11    3 |    15   21   19   16   24   16   23   20   18   21    16
  31  |    4   23    9   10   23    4   21   10   10   17    4 |    14   28   15   17   31   13   28   14   14   18    13
  32  |    5   12    6   10   15    3   14    6    7   17    3 |    14   20   18   21   20   15   17   19   18   15    15
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |    8   21    9   10   17    6   19   12   10   21      |T   25   35   30   28   35   28   35   27   28   30    26
 WRMS |    7   21    8   10   15    5   18    8    7   21      |NE  16   26   22   19   26   18   26   18   18   20    17
 MEDI |    7   20    9   10   16    5   18   10    9   20      |MD  16   28   23   20   26   18   28   19   20   20    18

Table 3.1598.2   GPS week: 1598   Day: 2   MJD: 55432.000                            

        Weighted Average                                            Orbit Dynamics (7 days)
 PRN  |  cod  emr  esa  gfz  grg  igr  jpl  mit  ngs  sio  IGS |   cod  emr  esa  gfz  grg  igr  jpl  mit  ngs  sio   IGS
------+--------------------------------------------------------+---------------------------------------------------------
  X1  |   22  ---  ---   25  ---   35  ---   20   36  ---   15 |    25  ---  ---   21  ---   54  ---   16   31  ---    20
   2  |    6   20   11   10   20    8   20   10    6   24    4 |    16   26   22   16   23   20   29   16   17   24    16
   3E |   10   18    9   10   21    5   17    6   11   19    4 |    79   82   77   75   80   82   85   71   74   81    82
   4  |    6   16   11   10   10    4   12    7    9   13    3 |    20   28   23   20   26   20   25   21   20   26    20
   5  |    6   16   10    9   15    3   17   10    8   23    4 |    22   27   27   27   31   24   31   23   29   26    23
   6E |   17   18   13   13   20   10   18   40   19   38    8 |    97  106  103   96  103   97  108  100  103  104   100
   7  |   12   20   10    9   28    4   20    6   10   16    4 |    21   27   27   22   39   20   29   19   20   17    19
   8  |    8   16    4    7   15    5   12    7    9   13    3 |    12   24   18   14   17   15   23   13   18   14    13
   9  |   10   19   12   12   16    4   13   10    8   11    4 |    14   24   24   22   21   19   18   22   25   20    18
  10  |    7   15    8    9   11    4   10    7    9   17    3 |    20   21   26   25   25   21   20   23   22   20    20
  11  |    8   13    8    8   19    6   17    6    9   11    3 |    15   28   19   12   34   16   27   16   19   14    15
  12  |    8   19   12   11   25    6   24   10    9   21    5 |    21   30   23   21   32   20   32   20   16   17    17
  13E |    9   15    8   10   15    5   16    9   11   12    4 |    24   32   32   32   33   30   35   30   30   32    28
 X14  |    4  ---  ---  ---  ---   17  ---  ---  ---  ---    0 |    16  ---  ---  ---  ---   19  ---  ---  ---  ---    18
  15  |    9   25    8   12   16    5   23   14   10   13    4 |    12   27   19   17   23   16   25   16   23   21    15
  16  |    8   26   12   12   21    9   25    9    9   34    5 |    13   31   19   16   22   16   32   16   17   28    14
  17E |    9   18    8   11   22    5   23   10    9   13    4 |    15   29   20   16   23   17   28   15   20   21    16
  18  |    8   17    8   13   11    6   21   12    7   26    4 |    19   32   28   26   28   24   31   24   30   19    23
  19E |    8   17    8    8   20    5   29   14    9   12    4 |    24   35   31   25   33   25   39   26   27   27    26
  20  |    9   14    6   11   15    4   17    7   11   18    4 |    23   26   28   27   26   23   26   22   21   17    21
  21  |    6   23    8    9   17    7   26   14    8   17    4 |    22   41   27   23   42   25   40   23   30   18    25
  22  |    8   15    7   11   14    3   18    8    4   18    3 |    24   32   28   28   30   26   32   28   28   25    26
  23  |    9   23    7   10   17    6   18    9   13   20    4 |    14   30   21   19   25   19   30   19   23   24    17
  24  |    6   10    3    6   15    4   13    6    6   11    2 |    18   19   20   19   23   19   19   20   22   18    19
 X25  |   23  ---   13   20  ---   23  ---   23   22  ---   10 |    24  ---   24   18  ---   23  ---   18   22  ---    16
  26E |   13   20    7   10   23   10   14   10   11   21    4 |   121  124  125  123  122  126  122  123  127  125   124
  27  |   10   20   13   13   19    5   14   10    8   11    4 |    11   25   22   19   21   16   17   20   23   19    16
  28  |    6   22    8   12   20    6   22    8    7   24    4 |    13   30   22   16   31   14   32   13   16   16    14
 X29E |    7   20    9   13   20    9   27   14    9  ---    5 |    18   27   22   24   27   21   28   19   20  ---    18
  30  |    7   13    6    9   15    6   11    8    6   17    3 |    18   23   24   22   29   20   23   22   21   22    19
  31  |    4   20    8    9   24    4   21   10    9   12    4 |    14   26   17   16   34   14   26   16   15   16    13
  32  |   10   13    6    6   17    6   14    6   12   13    3 |    15   16   18   17   20   13   17   17   19   13    13
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |    9   18    9   10   18    6   19   12   10   19      |T   25   35   31   28   35   28   35   27   29   29    26
 WRMS |    8   18    9   10   18    5   18    9    7   18      |NE  17   26   22   20   27   20   26   19   21   19    18
 MEDI |    8   18    8   10   17    5   18   10    9   17      |MD  18   28   23   21   28   20   29   20   22   20    18

Table 3.1598.3   GPS week: 1598   Day: 3   MJD: 55433.000                            

        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  |   15   81  ---   29  ---   37  ---   21   24  ---   12 |    30   42  ---   22  ---   34  ---   15   32  ---    22
   2  |    7   24    6    9   15    9   23    9    8   23    4 |    15   28   18   17   25   17   27   15   13   26    15
   3E |    9   16    6   10   17    4   17    7   11   23    4 |    84  100   92   84  103   86  102   89   88  100    88
   4  |    7   12    9   10   11    6   12   12   12   16    3 |    21   26   24   25   26   20   22   21   23   27    21
   5  |    6   19    3   11   10    4   19   11   10   22    4 |    21   29   27   31   31   24   28   25   23   25    23
   6E |   12   17    8   12   23    5   18   27   16   30    6 |    89   96   93   88   97   92  100   93   91   96    90
   7  |    6   19    9   14   24    5   22   13   12   19    5 |    21   28   24   23   40   20   28   19   19   16    20
   8  |    6   13    3    9   13    4   11   10   11   13    3 |    16   20   21   19   21   16   25   19   15   15    17
   9  |    7   17    7   11   15    5   14   14   11   16    4 |    21   25   20   27   24   19   23   27   19   21    20
  10  |    6   15    4   11   11    6   14   11   10   17    3 |    23   26   29   31   30   24   26   28   23   25    24
  11  |    7   12    5    9   21    4   18    6    8   13    3 |    19   25   17   14   35   15   24   15   15   16    16
  12  |    9   20    6   13   16    5   23   13   13   20    4 |    24   31   21   25   27   21   31   25   15   21    20
  13E |    5   17    6    9   15    8   18   16   13   16    4 |    29   30   30   31   30   26   33   26   30   28    27
 X14  |    5   17    5   11  ---    5   20   11    9   17    4 |    16   21   20   14  ---   17   22   13   16   12    17
  15  |    6   26    8   13   18    5   26   15    5   12    4 |    16   29   16   22   26   15   29   20   17   20    16
  16  |    8   20    7   12   17    6   25   10    7   35    5 |    18   31   19   17   26   18   34   17   18   27    17
  17E |    5   15    7   14   19    6   26    6    8   11    4 |    19   31   28   24   32   22   29   22   24   19    22
  18  |    7   21    6   15   12    5   20   14    9   25    4 |    19   32   28   31   28   22   30   24   23   18    22
  19E |    8   21    6   12   16    4   28   11   12   14    4 |    28   35   32   26   29   25   36   25   28   29    28
  20  |    6   12    6    9   11    5   16    4   10   18    3 |    27   29   29   28   32   26   27   24   28   21    26
  21  |    7   24    6   10   15    3   25   11    9   15    4 |    22   40   28   24   40   23   37   24   22   20    24
  22  |    7   14    5   13   12    4   19   12    7   23    4 |    23   30   30   34   33   26   31   29   25   26    26
  23  |    6   23    6    9   16    6   19   13   11   20    4 |    17   26   18   15   27   15   28   16   17   20    14
  24  |    5   12    6   10   14    6   15    6    9   12    3 |    18   22   21   26   28   22   18   22   21   17    21
 X25  |   28  ---   18   21  ---   17  ---   25   21  ---   11 |    32  ---   35   17  ---   25  ---   22   20  ---    22
  26E |   20   16    9   12   23    5   11   10   10   20    5 |   150  150  151  156  147  146  151  150  151  150   148
  27  |    6   26    7   14   16    5   14   13   13   13    4 |    18   31   16   24   22   17   22   25   19   20    18
  28  |    5   21    4   11   18    4   22    8   10   25    4 |    18   28   23   22   33   19   30   18   19   17    19
 X29E |    7   18    8   15   21    4   24   13   16  ---    5 |    19   25   24   25   30   18   24   19   16  ---    18
  30  |    6   14    5    8   10    4   12   11   10   16    3 |    24   30   25   26   34   22   29   28   21   27    24
  31  |    5   19    9   10   20    4   17   10    9   14    4 |    18   27   19   20   30   17   25   18   19   18    17
  32  |    8   12    4    8   15    4   15    8    9   13    3 |    16   19   20   19   25   16   15   17   20   13    17
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |    8   18    6   11   16    5   19   12   10   19      |T   29   36   32   31   38   28   36   29   29   30    28
 WRMS |    7   18    6   11   15    5   19    9    8   18      |NE  20   28   22   23   29   20   26   21   20   20    20
 MEDI |    7   17    6   11   16    5   18   11   10   17      |MD  21   29   24   24   30   21   28   22   20   21    21

Table 3.1598.4   GPS week: 1598   Day: 4   MJD: 55434.000                            

        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  |   15   37  ---   12  ---   18  ---   12   19  ---    9 |    24   43  ---   19  ---   54  ---   22   18  ---    20
   2  |    7   26    7    9   13    4   24    7   10   24    4 |    18   31   19   21   29   19   30   17   19   32    18
  X3E |    6  ---  ---   12  ---  130  ---  ---  ---  ---    9 |    14  ---  ---   91  ---  212  ---  ---  ---  ---    13
   4  |    3   18    7    8   10    4   11    9   12   15    3 |    22   28   23   29   28   22   27   21   22   31    22
   5  |    4   20    8   11    8    4   20   10   11   22    4 |    21   30   26   31   30   24   28   27   21   27    23
   6E |    9   20    7    9   25   10   18   21   14   23    5 |   106  115  109  107  116  112  118  106  105  114   107
   7  |   11   26   12   12   22    5   26   13   12   19    5 |    22   35   29   24   39   21   32   23   22   23    22
   8  |    6   16    9    8   17    5   11    9    9   12    3 |    14   25   20   16   18   17   24   18   15   17    15
   9  |    6   22    8   11   11    3   15   15    7   13    4 |    18   29   17   20   23   18   27   23   16   19    17
  10  |    5   17    5    7   11    6   10    9   11   20    3 |    23   28   27   31   31   26   24   27   25   28    24
  11  |    7   17    6   11   22    3   18    6   10   12    4 |    17   28   21   19   38   20   27   18   21   20    18
  12  |    7   20    8   11   22    5   21   13    8   20    4 |    19   30   19   19   33   20   29   21   15   18    17
  13  |    6   19    6    8   13    4   14   13   12   12    3 |    50   51   49   57   57   53   51   53   53   53    51
  14  |    5   16    5    6   18    3   19    9    7   17    3 |    16   19   14   11   22   15   20   14   14   17    16
  15  |    6   32   10   12   19    6   28   17   10   16    5 |    15   28   20   21   27   17   30   21   17   20    16
  16  |    6   24    7   13   14    6   24    9    9   34    5 |    20   31   18   16   24   18   32   16   19   28    17
  17E |    8   14    6    9   21    5   23    9    7    9    3 |    26   32   25   24   35   25   34   25   23   26    24
  18  |    5   23    7   12    9    5   23   20   11   26    5 |    23   35   32   31   36   26   34   34   30   24    27
  19E |    6   21    9   11   13    4   26   11   11   13    4 |    21   32   27   26   33   25   33   23   25   25    23
  20  |    5   17    6    8   13    4   14    5   10   19    3 |    26   30   27   25   29   26   28   23   24   20    23
  21  |    6   27    9    7   16    4   27    9   10   15    4 |    26   41   33   26   45   29   40   27   25   24    28
  22  |    6   17    5   10   11    4   19    9    7   23    3 |    25   32   27   30   34   28   32   27   29   27    27
  23  |    7   22    7    7   17    4   19   12    9   19    4 |    18   28   18   17   29   19   27   19   14   24    15
  24  |    6   11    6    7   12    2   13    8    9   12    3 |    19   19   21   18   25   20   21   19   19   17    18
 X25  |   26  ---   17   26  ---   22  ---   25   31  ---   12 |    31  ---   27   35  ---   20  ---   20   26  ---    21
  26  |    8   15    6    9   19    6   15   12   11   27    4 |   100   96  104   96  100   95  101   95  103  101    97
  27  |    7   22    8   10   12    4   16   14    9   12    4 |    16   26   17   21   24   19   27   23   16   19    17
  28  |    6   23    7   15   16    5   21    9   10   27    4 |    17   32   23   22   32   20   32   20   18   21    19
 X29E |    8   17    8   12   15    5   24   10   10  ---    4 |    24   25   24   25   28   25   28   22   23  ---    21
  30  |    5   14    7    7    9    3   11   11    7   23    3 |    22   28   27   23   30   25   28   26   24   32    23
  31  |    6   19    6    8   16    3   18   10   10   13    3 |    19   28   20   21   30   19   29   18   20   18    19
  32  |    7   12    4   12   13    3   14    8    5   14    3 |    17   19   19   16   22   18   20   19   17   19    16
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |    6   20    7   10   16    5   19   11   10   19      |T   26   35   29   30   36   34   34   27   27   30    26
 WRMS |    6   20    7   10   15    4   18   10    8   16      |NE  20   29   23   22   29   22   28   22   20   23    20
 MEDI |    6   19    7   10   14    4   19   10   10   17      |MD  21   30   23   23   30   21   29   22   21   24    20

Table 3.1598.5   GPS week: 1598   Day: 5   MJD: 55435.000                            

        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  |   16  ---  ---   27  ---  152  ---  ---  ---  ---   21 |    40  ---  ---   29  ---  122  ---  ---  ---  ---    30
   2  |    7   25    8    7   17    6   24    8    7   27    4 |    13   25   18   14   26   16   24   13   18   30    14
  X3E |    7  ---  ---  ---  ---   10  ---    7   11   25    6 |    13  ---  ---  ---  ---   44  ---   14   13   12    11
   4  |    6   15    5    7   12    4   14    9    8   14    3 |    18   24   21   19   25   19   23   15   22   25    18
   5  |    7   16    8   15   13    3   18    9    8   22    4 |    21   24   24   28   31   22   26   21   23   25    21
   6E |   10   17    5   11   16    4   16   15   13   21    4 |   134  141  135  130  142  132  143  128  134  144   135
   7  |   14   23   10   12   23    4   25   12   13   15    5 |    25   31   26   27   41   21   27   23   18   18    22
   8  |    6   14    5    6   20    3   11    9   10    9    3 |    11   22   15   14   19   13   21   12   15   15    13
   9  |    7   16    7    9   12    5   17   13    7   12    3 |    14   22   15   19   17   13   22   18   13   14    13
  10  |    6   15    6    8   15    3   13    9   11   21    3 |    20   19   25   21   28   21   18   21   24   24    20
  11  |    7   17    7    7   27    3   18    9   13   15    4 |    16   26   19   18   36   17   25   14   21   17    17
  12  |    7   21    7   13   23    5   24   10    7   22    4 |    17   29   16   20   29   15   30   17   15   16    14
  13  |    6   19    7    7   26    4   19   13    9   10    4 |    16   23   20   18   33   16   22   21   20   22    17
  14  |    6   19    6   10   17    3   22    8    6   18    3 |    10   20   13   11   13   10   18    9   16   11    10
  15  |    9   30    9   10   19    4   29   11   10   11    5 |    14   30   19   20   25   16   30   20   16   19    16
  16  |   10   19    8   11   17    4   25    7   10   34    4 |    15   26   14   15   21   13   29   13   19   27    13
  17E |    8   19    8   11   57    6   26    8    9   13    5 |    21   31   26   24   59   21   28   19   30   21    24
  18  |    6   19    7   15   10    4   21   19    7   26    4 |    17   29   20   22   27   18   28   26   20   16    18
  19E |    5   22    6    9   22    3   28    9   12   17    4 |    19   30   23   20   28   19   30   21   26   21    20
  20  |    5   12    6    8   22    5   16    7    8   22    3 |    21   27   26   23   31   22   24   18   24   17    22
  21  |   10   22    7    9   18    4   26   13   13   14    4 |    21   35   26   18   40   22   38   21   24   18    22
  22  |    7   16    5   12   11    3   21    7    6   20    3 |    17   27   21   23   27   19   26   18   22   18    19
  23  |    8   22    6    8   23    4   20   11    8   20    4 |    18   27   19   16   32   16   24   15   18   24    15
  24  |    6   12    5    9   16    3   14   10    9   14    3 |    15   17   18   19   20   16   15   16   16   11    15
 X25  |   36  ---   25   12  ---   17  ---   18   18  ---   12 |    27  ---   39   25  ---   24  ---   16   14  ---    19
 X26  |   16   30  ---   89   34   31  ---   25   46  ---   15 |    34   37  ---   72   48   41  ---   38   70  ---    39
  27  |    8   18    5   10   15    5   16   13    5   10    3 |    13   24   13   19   19   12   20   17   13   13    12
  28  |    6   22    6   10   20    4   25    7   11   28    4 |    13   29   22   21   31   15   31   16   20   19    17
 X29E |    8   18    7   13   15    4   22   11   12  ---    4 |    17   25   22   21   23   16   23   18   17  ---    16
  30  |    7   13    5    8    9    4   11   10    5   28    3 |    15   23   18   17   22   15   22   18   16   30    16
  31  |    5   18    6    9   18    4   20    9   11   13    3 |    16   25   15   15   28   14   23   16   22   13    14
  32  |    8   13    8    6   20    4   15    7   10   16    3 |    16   19   21   16   23   18   16   15   23   17    17
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |    7   19    7   10   21    4   20   10    9   19      |T   21   29   24   24   32   25   28   21   24   23    21
 WRMS |    7   19    6    9   18    4   20    9    7   18      |NE  18   25   20   19   27   21   24   17   18   19    17
 MEDI |    7   18    7   10   18    4   20    9   10   17      |MD  17   26   20   20   28   17   24   18   20   18    17

Table 3.1598.6   GPS week: 1598   Day: 6   MJD: 55436.000                            

        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  |   11  ---  ---   21  ---  158  ---  ---  ---  ---   15 |    34  ---  ---   19  ---  134  ---  ---  ---  ---    24
   2  |    6   22    5    8   15    6   25    9    8   29    4 |    14   27   17   17   27   16   28   14   19   30    16
   3E |   10   21    6   11   18    6   19    8   13   28    4 |    13   15    4    6    8   29   14   15   16   16    15
   4  |    5   16    4    8    8    6   14   11    9   14    3 |    22   27   26   25   28   25   26   21   26   28    23
   5  |    5   19    7   11   13    7   16   10    9   23    3 |    27   30   29   36   36   30   29   31   30   31    28
   6E |    9   19    6   17   14    7   16    8   15   24    4 |    79   90   82   79   89   77   89   79   80   88    79
   7  |    8   24   10   13   19    7   25   13   10   14    4 |    20   33   25   25   32   22   31   22   24   21    23
   8  |    6   12    5    5   16    4   13    9   10   10    3 |    18   25   23   20   22   23   27   22   24   23    23
   9  |    6   18    7    8   15    3   14   14   10   13    3 |    27   32   28   31   32   33   31   38   33   32    31
  10  |    6   14    4    9   13    5   14   11    8   22    3 |    28   33   35   35   36   32   28   35   34   30    31
  11  |    6   14    4    7   23    6   16    9    7   14    3 |    18   23   17   17   34   17   22   19   22   18    16
  12  |    7   22    7   11   24    6   24   10   14   25    4 |    24   33   24   28   35   26   33   30   27   31    26
  13  |    6   19    8    7   23    6   17   12   10   10    4 |    29   31   32   33   43   29   30   32   26   29    29
  14  |    4   18    5    8   20    3   22   10   10   16    3 |    15   22   14   12   17   17   21   12   16   16    17
  15  |    6   29    6   11   17    4   27   13   13   14    4 |    19   34   20   23   26   23   32   24   27   29    22
  16  |    7   25    8   16   15    9   23   10   12   35    5 |    18   33   18   17   21   16   32   15   20   32    17
  17E |    6   22    5    8   20    6   24    8   13   16    4 |    15   27   17   16   27   16   23   16   18   21    15
  18  |    6   19    8   13   12    6   21   22    9   27    5 |    25   35   34   33   33   30   32   34   33   26    29
  19E |    6   22    6    9   20    5   26    9   10   15    4 |    29   35   32   30   35   27   34   29   30   30    29
  20  |    4   12    5   10   16    6   14    7    8   25    3 |    31   31   32   33   35   30   27   28   33   25    30
  21  |    6   23    8    7   16    6   26   13    9   16    4 |    22   37   29   24   40   25   38   29   25   22    26
  22  |    4   16    4    9   13    5   19    6    7   22    3 |    29   33   32   33   36   32   31   32   31   28    31
  23  |    5   22    9    8   19    6   19   10    9   21    4 |    17   29   18   17   28   17   25   19   21   28    17
  24  |    5   13    5    6   14    4   12   10    8   14    3 |    23   25   25   27   27   25   22   26   24   22    25
 X25  |   24  ---   10   12  ---   17  ---   18   12  ---    8 |    25  ---   20   18  ---   16  ---   18   14  ---    15
  26  |    6   15    6   10   14    6   12    9    9   21    3 |    77   76   77   77   85   82   78   76   83   77    78
  27  |    8   20    6    8   13    3   15   15    9   12    3 |    24   31   26   29   28   31   29   37   31   31    29
  28  |    7   22    8    8   19    6   22    8    9   31    4 |    14   27   22   19   29   18   30   16   17   26    17
 X29E |    7   21    9   15   16    4   20   10   12  ---    4 |    18   23   23   22   22   18   24   20   17  ---    18
  30  |    5   14    6   13    9    5   11   10    9   37    4 |    24   31   27   34   32   27   29   32   27   46    28
  31  |    4   25    6   11   21    4   19    9   11   15    4 |    18   28   18   21   31   18   25   16   18   17    17
  32  |    5   13    6    9   15    5   13   10    8   19    3 |    19   19   21   21   26   21   16   18   23   18    20
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |    6   19    6   10   17    6   19   11   10   21      |T   25   32   27   27   33   30   31   27   28   30    26
 WRMS |    6   19    6   11   16    5   19   10    9   18      |NE  22   29   24   25   30   28   28   25   25   27    23
 MEDI |    6   19    6    9   16    6   19   10    9   19      |MD  22   31   25   24   31   25   29   24   25   28    23



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 4.1598   GPS week: 1598   MJD: 55430.0-55436.0

CENT| CLK EPO  |        BRUS       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3040 |U   10     9    33 |U    6     6    23 |U   15    15    68 |
emr | emr 2853 |    11    10    34 |U    7     7    32 |    34    22    67 |
esa | esa 2921 |    10     9    29 |U    6     6    22 |    74    81   218 |
gfz | gfz 3014 |U    8     9    27 |U    6     7    28 |U   17    17    62 |
grg | grg 2811 |    20    17    37 |U   18    14    68 |    34    22    70 |
igr | igr 2922 |    11     9    29 |     6     7    27 |    36    22    71 |
igs | igs 2926 |    10     9    28 |     6     6    24 |    32    20    64 |
jpl | jpl 2800 |U   11    10    33 |     8     7    34 |U   76    80   207 |
mit | mit 3017 |U   11    10    31 |U    7     8    29 |U   27    29    58 |



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 5.1598.0   GPS week: 1598   Day: 0   MJD: 55430.0

CENT| CLK EPO  |        BRUS       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3029 |     7     9    23 |     5     6    25 |    36    29   134 |
emr | emr 2867 |     9    10    36 |     8     8    29 |    40    29   127 |
esa | esa 2976 |     8     9    27 |     4     5    22 |    32    29   122 |
gfz | gfz 3059 |     7     9    25 |     5     7    29 |    44    30   134 |
grg | grg 2880 |     8     8    30 |    79    45   338 |    36    29   131 |
igr | igr 2959 |     7     9    25 |     5     6    26 |    35    27   128 |
igs | igs 2909 |     7     9    24 |     5     6    25 |    36    29   128 |
jpl | jpl 2859 |     9     9    31 |     7     7    31 |    45    26   133 |
mit | mit 3072 |     8     9    25 |     6     9    32 |    40    36   133 |

Table 5.1598.1   GPS week: 1598   Day: 1   MJD: 55431.0

CENT| CLK EPO  |        BRUS       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3058 |    10    10    38 |     5     8    25 |     9    10    23 |
emr | emr 2868 |    12    11    45 |     7    10    38 |    10    12    26 |
esa | esa 2976 |     9    12    37 |     5     7    27 |     9    11    24 |
gfz | gfz 3062 |     9    12    35 |     6     8    28 |    13    11    23 |
grg | grg 2784 |    18    14    47 |     9     9    20 |    13    14    25 |
igr | igr 2961 |    10    11    37 |     5     9    30 |     9    12    23 |
igs | igs 2927 |    10    11    38 |     5     7    30 |     9    10    21 |
jpl | jpl 2770 |    10    13    42 |     8     7    41 |     9    10    21 |
mit | mit 3072 |    16    15    47 |     7    10    31 |    11    13    24 |

Table 5.1598.2   GPS week: 1598   Day: 2   MJD: 55432.0

CENT| CLK EPO  |        BRUS       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3036 |  ----  ----  ---- |  ----  ----  ---- |  ----  ----  ---- |
emr | emr 2776 |    11     8    28 |     9     7    29 |    14    18    43 |
esa | esa 2880 |     9    10    25 |     6     6    22 |    14    19    38 |
gfz | gfz 2963 |     9    10    25 |     7     6    28 |    15    17    49 |
grg | grg 2784 |    12     9    31 |     9     9    25 |    16    19    44 |
igr | igr 2875 |    10     8    25 |     6     6    24 |    13    15    38 |
igs | igs 2894 |    10     8    25 |     6     5    23 |    14    18    37 |
jpl | jpl 2774 |    10    11    28 |     7     8    31 |    14    18    39 |
mit | mit 2976 |    16    12    36 |     8     7    33 |    96    93    93 |

Table 5.1598.3   GPS week: 1598   Day: 3   MJD: 55433.0

CENT| CLK EPO  |        BRUS       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3036 |     8    10    25 |    11     7    36 |     9     5    16 |
emr | emr 2954 |     9     8    27 |    10     8    38 |    10     7    17 |
esa | esa 2976 |     9     7    26 |    10     8    30 |    12    13   111 |
gfz | gfz 3056 |     8     8    26 |    11     7    42 |     9     5    16 |
grg | grg 2784 |    12    13    39 |    12    12    29 |    13     7    22 |
igr | igr 2943 |     9     8    29 |    11     7    41 |     8     6    16 |
igs | igs 2994 |     9     8    29 |    10     7    34 |     9     5    16 |
jpl | jpl 2869 |     9     7    31 |    12     8    45 |     8     5    21 |
mit | mit 3072 |    10     8    30 |    10     7    34 |    11     8    23 |

Table 5.1598.4   GPS week: 1598   Day: 4   MJD: 55434.0

CENT| CLK EPO  |        BRUS       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3044 |  ----  ----  ---- |  ----  ----  ---- |  ----  ----  ---- |
emr | emr 2863 |     9    11    25 |     6     6    29 |    11    11    28 |
esa | esa 2880 |     9     8    25 |     5     6    20 |    11    11    29 |
gfz | gfz 2972 |     7     7    20 |     6     6    21 |    11     9    27 |
grg | grg 2784 |    15     7    25 |     5     7    23 |    12    11    32 |
igr | igr 2920 |  ----  ----  ---- |  ----  ----  ---- |  ----  ----  ---- |
igs | igs 2879 |     8     7    21 |     5     6    20 |     9     9    27 |
jpl | jpl 2777 |    10     8    25 |     6     7    28 |     9     9    29 |
mit | mit 2976 |     7     8    20 |     7     8    23 |    12    11    29 |

Table 5.1598.5   GPS week: 1598   Day: 5   MJD: 55435.0

CENT| CLK EPO  |        BRUS       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3033 |    14    12    51 |     5     5    15 |    11    28   150 |
emr | emr 2773 |    11    13    40 |     5     6    25 |   141    68   207 |
esa | esa 2784 |    10    10    30 |     5     5    15 |   434   480  1181 |
gfz | gfz 2927 |     9    10    32 |     5     5    23 |    24    42   169 |
grg | grg 2784 |    34    41    37 |     6     7    21 |   142    70   217 |
igr | igr 2863 |    10    11    31 |     5     6    18 |   141    67   198 |
igs | igs 2915 |     9     9    27 |     4     5    16 |   141    67   202 |
jpl | jpl 2683 |    10    10    36 |     6     7    28 |   435   490  1187 |
mit | mit 2976 |     8     9    28 |     5     9    27 |    11    36    85 |

Table 5.1598.6   GPS week: 1598   Day: 6   MJD: 55436.0

CENT| CLK EPO  |        BRUS       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3050 |     9     6    28 |     5     5    17 |     7     4    20 |
emr | emr 2872 |    20    11    37 |     5     7    33 |     9     7    22 |
esa | esa 2976 |    19     9    30 |     5     5    18 |     8     6    22 |
gfz | gfz 3065 |     9     6    25 |     5     8    26 |     7     4    18 |
grg | grg 2880 |    38    27    50 |     5     8    18 |     9     5    20 |
igr | igr 2939 |    19     9    30 |     5     6    21 |     8     5    22 |
igs | igs 2967 |    19     8    31 |     6     7    23 |     7     4    20 |
jpl | jpl 2871 |    19    10    37 |     6     6    36 |     8     6    20 |
mit | mit 2976 |    12     9    29 |     6     7    22 |     8     7    20 |


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 6.1598   GPS week: 1598   MJD: 55430.500-55436.500

                                                         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     -24      -4     -20     -6 |       4     15
            |      29      17      92      64      5 |       1
emr   uuuuu |      14      24     290     185     -3 |      61     63
            |      13      32     135      96      9 |       1
esa   uuuuu |      -2     -19     -59      27      1 |      14     24
            |      12       9      86      83      9 |       1
gfz   uuuuu |      13      46     -16     -73      0 |      -1     16
            |      21      12      34      51      4 |       1
grg   uuuux |     -51     -28     -14    -140    -14 |       1     31
            |      47      39      53      69     43 |       5
igr   xxxxx |      21      22      -4     129     -2 |      -6     17
            |      24       7      44      77      5 |       2
irf   xxxxx |       8       0     -65      -9     -4 |       3     16
            |      16      10      52      68     11 |       4
jpl   uuuux |      36      19     -34     144    -21 |      34     40
            |      68      27      77     113     24 |       5
mit   uuuuu |      -1     -16    -144     -63     -3 |      17     22
            |      18      15      82      82     11 |       4
ngs   uuuuu |      -1     -20     154       6      0 |      -1     15
            |      30      37     108     130      7 |       2
sio   uuuuu |     -14      43     -80      11    -12 |      36     39
            |      24      18      98     115     13 |       3


Table 7.1598.0   GPS week: 1598   Day: 0   MJD: 55430.500

                                                         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 |      22     -28    -157      57     -7 |       5     14
emr   uuuuu |      25       1     300      57      4 |      60     61
esa   uuuuu |      13     -10    -107      95     11 |      13     23
gfz   uuuuu |      23      36     -68     -53     -5 |       1     17
grg   uuuux |     -74     -58      19    -127    -47 |       7     29
igr   xxxxx |      39      35      57      99     -4 |      -3     20
irf   xxxxx |      20      13      12      73      8 |      -3     14
jpl   uuuux |     -43      19      18     -65     14 |      36     40
mit   uuuuu |       9      -3     -25      39      4 |      11     17
ngs   uuuuu |      -8     -26      57     -96     -7 |       3     18
sio   uuuuu |     -12      67      66     118      3 |      31     34

Table 7.1598.1   GPS week: 1598   Day: 1   MJD: 55431.500

                                                         AC LOD  AC LOD
CENT  FLAG  |   Xpole   Ypole     Xrt     Yrt    LOD |    BIAS  BIAS RMS
            |   [uas]   [uas]   [uas/d] [uas/d]  [us]|    [us]    [us]
------------+----------------------------------------+------------------
cod   xxxxx |      16      -9     -97      31      0 |       4     14
emr   uuuuu |      15     -11     559      50      1 |      60     62
esa   uuuuu |       3     -11    -120     140      6 |      13     22
gfz   uuuuu |      27      54     -21     -18     -7 |      -1     16
grg   uuuux |     -22       7     -94    -110    -45 |       4     30
igr   xxxxx |      60      18      26     177    -12 |      -4     19
irf   xxxxx |      19       3     -38      39      8 |      -2     14
jpl   uuuux |     -18      10      98      45      4 |      37     41
mit   uuuuu |      11     -21     -81      15      7 |      11     18
ngs   uuuuu |     -19     -35      46    -164     -3 |       1     16
sio   uuuuu |      -8      57     -58      64      2 |      32     35

Table 7.1598.2   GPS week: 1598   Day: 2   MJD: 55432.500

                                                         AC LOD  AC LOD
CENT  FLAG  |   Xpole   Ypole     Xrt     Yrt    LOD |    BIAS  BIAS RMS
            |   [uas]   [uas]   [uas/d] [uas/d]  [us]|    [us]    [us]
------------+----------------------------------------+------------------
cod   xxxxx |      14     -33      52      45     -5 |       5     16
emr   uuuuu |      19     -13     261     188     12 |      61     63
esa   uuuuu |      -4     -25    -171      -6     11 |      13     23
gfz   uuuuu |       3      40     -28     -80      1 |      -1     16
grg   uuuux |     -14     -62       0     -46    -67 |       3     30
igr   xxxxx |       9      18     -67     169      2 |      -6     17
irf   xxxxx |      18      -3     -18      38      4 |       1     18
jpl   uuuux |     -39     -21     -62     194    -12 |      39     44
mit   uuuuu |       9     -21     -76     -39      7 |      15     23
ngs   uuuuu |      12      35     199     -97     -9 |       1     15
sio   uuuuu |      -7      36       2     144     -6 |      35     39

Table 7.1598.3   GPS week: 1598   Day: 3   MJD: 55433.500

                                                         AC LOD  AC LOD
CENT  FLAG  |   Xpole   Ypole     Xrt     Yrt    LOD |    BIAS  BIAS RMS
            |   [uas]   [uas]   [uas/d] [uas/d]  [us]|    [us]    [us]
------------+----------------------------------------+------------------
cod   xxxxx |     -12     -18      39     -54     -6 |       5     16
emr   uuuuu |      12      68     146     229     -6 |      62     64
esa   uuuuu |      -4     -31       1     -21      0 |      14     24
gfz   uuuuu |      -9      42       4     -94      3 |      -2     15
grg   uuuux |       8     -47      67     -76    -18 |       1     34
igr   xxxxx |      -2      30     -57     156     -2 |      -8     16
irf   xxxxx |      -8      -3    -116     -70      0 |       4     17
jpl   uuuux |      57      62    -128     196    -33 |      36     41
mit   uuuuu |     -14     -14    -198    -156      4 |      18     24
ngs   uuuuu |       5     -21     216     122     -2 |      -2     14
sio   uuuuu |     -39      42    -197     -61    -12 |      38     41

Table 7.1598.4   GPS week: 1598   Day: 4   MJD: 55434.500

                                                         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 |     -47     -47       1     -81     -7 |       5     15
emr   uuuuu |      34      48     253     303     -8 |      62     64
esa   uuuuu |     -26     -23      29    -110     -4 |      14     24
gfz   uuuuu |     -17      42      25    -111      4 |      -2     15
grg   uuuux |    -101     -22     -22    -201     39 |      -6     30
igr   xxxxx |      10      15       0      10      2 |      -8     16
irf   xxxxx |      -4     -18    -111      12    -13 |       6     17
jpl   uuuux |     124       0     -97     250    -50 |      34     40
mit   uuuuu |     -10     -43    -223     -30    -13 |      21     25
ngs   uuuuu |      54      17     166     130      5 |      -3     14
sio   uuuuu |     -28      13    -170      63    -20 |      39     41

Table 7.1598.5   GPS week: 1598   Day: 5   MJD: 55435.500

                                                         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 |       5       2     112    -100    -16 |       5     16
emr   uuuuu |       3      46     178     246    -14 |      63     65
esa   uuuuu |       6     -26      52      69     -9 |      15     24
gfz   uuuuu |      26      37      19    -150      3 |       0     15
grg   uuuux |     -37      41     -64    -233     42 |      -4     32
igr   xxxxx |      34      18       1      59     -1 |      -7     16
irf   xxxxx |     -15      -2     -66    -118    -19 |       8     16
jpl   uuuux |      80      39     -65     172    -30 |      30     39
mit   uuuuu |     -32     -17    -176    -177    -19 |      22     26
ngs   uuuuu |      -7     -33      59     158      9 |      -2     14
sio   uuuuu |     -37      31     -47    -154    -29 |      39     41

Table 7.1598.6   GPS week: 1598   Day: 6   MJD: 55436.500

                                                         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     -37      20     -36     -5 |       2     17
emr   uuuuu |      -7      31     334     225    -11 |      62     64
esa   uuuuu |      -3      -7     -98      20     -9 |      14     24
gfz   uuuuu |      37      69     -41      -7      3 |      -1     15
grg   uuuux |    -119     -58      -3    -185     -3 |      -1     33
igr   xxxxx |      -3      18      12     232      1 |      -8     16
irf   xxxxx |      25      11    -119     -38    -15 |       5     17
jpl   uuuux |      89      22      -5     219    -38 |      26     38
mit   uuuuu |      17       6    -233     -96    -13 |      20     25
ngs   uuuuu |     -43     -76     337     -12      8 |      -2     14
sio   uuuuu |      31      54    -158     -98    -24 |      35     39



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