[IGSREPORT-18497] Wk 1578 IGS Final Orbits

Jim Ray IGS.ACC at noaa.gov
Thu Apr 22 05:22:05 PDT 2010


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IGS Electronic Report   22 Apr 05:22:18 PDT 2010      Message Number 18497
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Author:  AC Coordinator / NOAA NGS

sum-file Version 2.0
Final IGS Orbit Combination - Week 1578   (Apr 04, 2010 - Apr 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:

igs1578[0-6].sp3  IGS GPS ephemeris files in SP3 format.
igs1578[0-6].clk  IGS GPS satellite and station clocks in clock RINEX format.
igs1578[0-6].cls  IGS GPS clock combination summary report.
igs15787.erp      Earth Rotation Parameters (ERP) and their rates as well as
                  Universal Time (UT1-UTC) and Length Of Day (LOD) associated 
                  with IGS ephemerides.
igs15787.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 1478, a new solution from CNES/GRGS (GRG) is included for
    evaluation and statistics only.

 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   | YELL YELL
                0  |  EMR   | WTZR WTZR
                0  |  ESA   | UNSA
                0  |  GFZ   | 4 ALIC CAS1
                0  |  GRG   | ONSA
                0  |  JPL   | DGAR
                0  |  NGS   | 1
                1  |  COD   | SCH2 WHIT EIL1 WHIT
                1  |  EMR   | 4 4 SCH2
                1  |  ESA   | CAS1 SCH2 WHIT
                1  |  GFZ   | ADE1 CAS1 YAR2
                1  |  JPL   | 4
                1  |  MIT   | 4 4 NNOR NTUS YELL HRAO IRKT NNOR NTUS SCH2 YELL
                1  |  NGS   | 1
                2  |  ALL   | 1 1
                2  |  COD   | SUTM
                2  |  EMR   | 4 4 SYOG CHUR SYOG YAKT YELL
                2  |  ESA   | CHUR CHUR MAW1 QAQ1 YELL
                2  |  GFZ   | 5 ARTU MCM4 RIO2
                2  |  GRG   | ONSA ULAB YAKT
                2  |  JPL   | 4 27 DGAR YAKT
                2  |  MIT   | 4 27 28 4 27 28
                3  |  COD   | XMIS
                3  |  EMR   | 4 24 4 24 WTZR WTZR
                3  |  GFZ   | 5 21 AUCK BOR1 HARB TSKB
                3  |  GRG   | ONSA
                3  |  JPL   | 4 24 DGAR
                3  |  MIT   | 4 24 27 29 4 24 27 29 BOR1 CHUR EIL1
                3  |  NGS   | 1
                4  |  ALL   | 1 1
                4  |  COD   | ARTU MCM4
                4  |  EMR   | 4 4 WTZR YELL
                4  |  ESA   | YELL YELL
                4  |  GFZ   | BOR1
                4  |  GRG   | ONSA
                4  |  JPL   | 4 24 27 DGAR
                4  |  MIT   | 4 24 27 4 24 27 BOR1
                5  |  ALL   | 1
                5  |  EMR   | 4 24 4 24 WTZR
                5  |  ESA   | MATE
                5  |  GFZ   | 4 5 7 8 11 13 17 19 24 28 DGAR NICO NTUS PERT TOW2
                5  |  GFZ   | TSKB
                5  |  GRG   | NRC1
                5  |  JPL   | 4 24 DGAR
                5  |  MIT   | 4 24 4 24 NICO USNO DARW NICO USNO
                5  |  NGS   | 1
                6  |  EMR   | 4 4 24 WTZR HARB MDO1
                6  |  ESA   | RAMO UNSA
                6  |  GFZ   | REUN TSKB
                6  |  GRG   | WTZR
                6  |  JPL   | 4 24 27 DGAR
                6  |  MIT   | 4 9 24 4 24

    
 5. New clock offsets and drifts were estimated for centres showing reference
    clock resets.  Note that only the largest clock offset and drift are output
    to the summary file.  However, the clock combination and the listed RMS
    include all the clock segments.  In summary, the following clock
    shifts/resets were noticed and accounted for:
    
               Day | Centre |  Time  |  Jump
               ----+--------+--------+-------------
                1  |  ESA   | ~23:55 | ~ -0.19 ns

 6. 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
               ----+------------+----------
               G02 | 2010_04_09 | 2010067 

 7. 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
               ----+--------+---------------
                0  |  SIO   | ALL (high Transformation - See Table 2)
                1  |  SIO   | ALL (high Transformation - See Table 2)
                2  |  SIO   | ALL (high Transformation - See Table 2)
                3  |  SIO   | ALL (high Transformation - See Table 2)
                4  |  SIO   | ALL (high Transformation - See Table 2)
                5  |  SIO   | ALL (high Transformation - See Table 2)
                5  |  GFZ   |  23
                6  |  SIO   | ALL (high Transformation - See Table 2)

 8. 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 G04 |  2 |    |    |    |    |    |    |

 9. 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.

10. Small rotations were applied to all the AC orbit and ERP values in order
    to align them to the IGS05 frame. These rotations were estimated in the IGS
    SINEX combination process, performed by the IGS Reference Frame Coordinator
    at the Institut Geographique National (IGN), and are based on the common
    stations between the individual AC SINEX solutions and the IGS05.snx SINEX
    frame. The estimated 7 transformations, from which only the 3 rotations are
    applied to the orbit and ERP values, are:
    
            |    DX     DY     DZ      RX     RY     RZ     SCL
     Centre |   [mm]   [mm]   [mm]   [uas]  [uas]  [uas]   [ppb]
     -------+---------------------------------------------------
       COD  |     .5    1.3     .9     -27     -1    -29    -.02
       EMR  |   11.4    4.8    8.7      -2     36     16     .22
       ESA  |    5.7    4.6   -1.9      81    -19    -66     .11
       GFZ  |   -1.1     .8    1.2     -12     50    -80     .0 
       GRG  |    4.8    8.5   11.9      30     59    -89     .65
       JPL  |    8.7    5.0    6.5      21      0     16     .24
       MIT  |    8.3    -.8    7.1      -4     16    -38    -.18
       NGS  |    5.8   -4.5    3.3     -75    -87     29     .02
       SIO  |   10.2    2.4   -8.8     -13    184   -597     .13


11. 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.

12. 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.

13. 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 1.1578.a). It also displays the computed satellite
position sigmas for the combined orbits (table 1.1578.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 2.1578.[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 3.1578.[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 5.1578.0-6).

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 1578 summary.                       (Apr 04, 2010 - Apr 10, 2010)

Table 1.1578.a   GPS week: 1578   MJD: 55290.000-55296.000

         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  247|    0     0     1    34   -11     3  -.20    9    8 |    -509     -57     22     77
        |    0     0     1     7    18    25   .03           |     324     570
emr   86|    1     1     2    -3   -44    19   .48   20   20 |     498    1189     21     92
        |    1     2     2    35    18    21   .03           |    2967    1641
esa  140|    2     1    -2  -163   -20   -47   .28    9    9 |    -186    -788     16     91
        |    1     0     1    23    30    13   .04           |    1022    2104
gfz  199|    0     0    -2    39   -79   -11  -.08   23   23 |      79      41     26    103
        |    2     2     1    67    71     8   .04           |     366     649
grg  105|    0     1     2   -82  -115    19   .92   27   23 |      12     -25     79    223
        |    1     1     2    22    29     9   .04           |     275     451
igr  n/a|   -1     0    -1     7     4    13   .04    6    6 |   12107     405     20     66
        |    0     0     0    19    25    22   .04           |    1718    1724
jpl  131|   -2     0    -1   -77    -2    60   .50   21   21 |    2494     993     19    112
        |    1     1     1    12    13    13   .03           |    2354    1405
mit  259|    0    -1     0     1   -49    15  -.37   12   11 |  -14449    1507     24    152
        |    1     1     1    17    42    16   .02           |    1320     155
ngs  213|   -1    -1     1   150   143     4  -.18   11    8 |   14569   -4315   2046   3609
        |    0     1     0    30    35    13   .03           |    1445    2143
sio  260|    0     1     4    21  -370  -557  -.21   21   18 |     ---     ---    ---    ---
        |    1     1     1    21    29    13   .03           |     ---     ---


Table 1.1578.b   GPS week : 1578   MJD: 55290.000-55296.000   

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



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 2.1578.0   GPS week: 1578   Day: 0   MJD: 55290.000                            

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  247|    0     1     1    35    11    36  -.24    9    8 |    -683     407     26     85
        |                      8   -50                       |
emr   86|    0     0     0    49   -33   -13   .47   20   20 |   -3852    2286     29     99
        |                    -81  -107                       |
esa  140|    2     1     0  -131    36   -53   .30    8    7 |    -457     618     18     87
        |                      8   -25                       |
gfz  199|   -1     0     0   -66  -196     0  -.12   13   13 |      61     -12     26    101
        |                    -71   -52                       |
grg  105|    0     2     5  -111  -142    33   .90   27   24 |    -453     933     83    208
        |                     89     9                       |
igr  n/a|   -1     0    -1    12    47    15  -.02    6    6 |    9230    1975     21     69
        |                    -51   -54                       |
jpl  131|    0    -2     0   -82    13    63   .51   22   22 |   -1370    2332     22    108
        |                     61   -70                       |
mit  259|    0    -3    -1     2  -136   -15  -.38   12   12 |  -15676    1375     29    151
        |                      8    59                       |
ngs  213|    0    -1     0   199   200     4  -.21   11    8 |   15583   -4522   1776   3689
        |                    -51    -5                       |
sio  260|    0     1     4     2  -429  -580  -.23   22   20 |     ---     ---    ---    ---
        |                    -65   207                       |

Table 2.1578.1   GPS week: 1578   Day: 1   MJD: 55291.000                            

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  247|    0     1     2    47     2    37  -.17    9    8 |      72    -873     21     75
        |                      9    -8                       |
emr   86|    0     2     1    15   -23    22   .50   21   21 |   -2356    1639     24     87
        |                    -62   -63                       |
esa  140|    0     2    -2  -138    -2   -61   .33    8    8 |   -2079    2632     20     93
        |                      9    58                       |
gfz  199|   -1     0    -3   -45  -126   -19  -.14   12   12 |     673    -635     30    108
        |                    -72     5                       |
grg  105|    0     2     3   -85   -87    29   .93   28   22 |     348    -402    101    238
        |                     76     1                       |
igr  n/a|    0     0    -1    19    18    19   .03    5    5 |   10657    1288     21     69
        |                    -30     0                       |
jpl  131|   -2     1     0   -90    11    34   .51   21   21 |     417    1422     19    106
        |                     39   -38                       |
mit  259|    2    -2     0   -28   -71    13  -.38   11   10 |  -14970    1529     30    134
        |                     10    42                       |
ngs  213|    0    -3     1   186   158     2  -.21   10    7 |   15969   -7600   2099   3963
        |                     24    14                       |
sio  260|    2     2     6    -5  -366  -558  -.22   21   19 |     ---     ---    ---    ---
        |                    -84   193                       |

Table 2.1578.2   GPS week: 1578   Day: 2   MJD: 55292.000                            

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  247|    0     0     1    40   -22     4  -.18    9    9 |    -554       5     20     79
        |                     28     1                       |
emr   86|    0     2     2    -1   -67     1   .47   19   19 |    -538    1178     20     81
        |                    -38   -35                       |
esa  140|    0     0    -2  -161   -19   -56   .29    9    8 |    -901     573     20    104
        |                     54    77                       |
gfz  199|    0    -1    -1    61    17   -19  -.07   14   14 |     283    -423     28    113
        |                    -60    37                       |
grg  105|   -1     0     4   -50  -129    22   .84   29   25 |       5    -204     79    211
        |                    -12   117                       |
igr  n/a|    0     0    -2    15   -17   -10   .01    7    7 |   12222     574     20     64
        |                     -7    10                       |
jpl  131|   -1    -1     0   -75    -2    63   .45   20   20 |    2040     940     21    129
        |                     55    12                       |
mit  259|    1    -2     0    22   -26    28  -.37   11   10 |  -15145    1757     27    169
        |                     -9    19                       |
ngs  213|   -1     0     1   124   111     7  -.17   12    8 |   15088   -5005   2397   3565
        |                     47   163                       |
sio  260|    1     3     4    53  -341  -540  -.24   21   17 |     ---     ---    ---    ---
        |                    -94   198                       |

Table 2.1578.3   GPS week: 1578   Day: 3   MJD: 55293.000                            

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  247|    0     0     3    31    -3    -7  -.19    9    8 |    -625     185     21     71
        |                     55     7                       |
emr   86|    0     3     1   -56   -73     8   .52   20   20 |     223    3365     22    101
        |                      5   -24                       |
esa  140|    1     1    -4  -159   -31   -42   .30    8    8 |     436   -2479     14     83
        |                     45    55                       |
gfz  199|    0     0    -4    94    -7    -2  -.08   14   14 |       5     244     26     98
        |                    -28    32                       |
grg  105|   -2     2     0   -67  -108    18   .94   25   24 |     -97     129     79    241
        |                     24    77                       |
igr  n/a|   -1     0    -1    22   -24   -14   .05    5    5 |   12433    2285     19     76
        |                     -2    20                       |
jpl  131|   -1     0    -1   -85   -11    79   .49   21   21 |    2540    2742     19    132
        |                     44    41                       |
mit  259|    0    -1     0    18   -16    35  -.41   12   10 |  -14728    1464     23    139
        |                    -17    10                       |
ngs  213|   -1    -1     2   131    88   -12  -.12   11    7 |   14982   -4643   2029   3762
        |                     48   165                       |
sio  260|    0     2     5    47  -354  -542  -.25   21   16 |     ---     ---    ---    ---
        |                    -92   199                       |

Table 2.1578.4   GPS week: 1578   Day: 4   MJD: 55294.000                            

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  247|   -1     1     0    33    -3    -9  -.16    9    8 |    -431    -179     22     72
        |                     33    14                       |
emr   86|    1     0     0   -44   -33    30   .49   20   20 |    2926    1836     23    116
        |                     -4   -47                       |
esa  140|    3     0     0  -194   -40   -60   .23   10   10 |     649   -2051     15     89
        |                     59    89                       |
gfz  199|    0     0     0    97   -65    -6  -.03   11   11 |     -13     -21     22     88
        |                    -56    29                       |
grg  105|    0     3     0   -77  -129    14   .99   26   25 |     339    -253     73    236
        |                      6    61                       |
igr  n/a|   -2    -1     0   -17    18    27   .07    5    5 |   14122     569     17     71
        |                    -32     7                       |
jpl  131|   -2     0    -3   -73     0    54   .56   21   21 |    4662    1122     17    102
        |                     34     2                       |
mit  259|    0     0    -1    -4   -37    17  -.35   11   11 |  -14263    1585     18    147
        |                    -13    18                       |
ngs  213|   -1    -2     2   125   140    25  -.18   10    7 |   14414   -3063   1870   3830
        |                     94   112                       |
sio  260|   -2     0     2    16  -353  -554  -.18   19   16 |     ---     ---    ---    ---
        |                    -81   192                       |

Table 2.1578.5   GPS week: 1578   Day: 5   MJD: 55295.000                            

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  247|    0     1     0    24   -21   -30  -.22    9    8 |    -979     728     26     99
        |                     51    13                       |
emr   86|    4    -1     5     9   -34    31   .43   18   18 |    3864   -1224     15     86
        |                    -53   -64                       |
esa  140|    3     0    -1  -178   -61   -31   .22    9    9 |     442   -1582     18    100
        |                     44    91                       |
gfz  199|   -5     6    -2    75  -101   -15  -.08   82   82 |    -551    1360     34    116
        |                    -21    51                       |
grg  105|    2     0     1  -111   -66     5   .92   25   22 |       7    -174     67    225
        |                     47   -12                       |
igr  n/a|    0     0     0    25     0     4   .01    6    6 |   13884   -2189     20     56
        |                    -49    11                       |
jpl  131|   -4     0    -1   -51    -4    60   .51   21   21 |    4998   -1222     18     98
        |                      4    -3                       |
mit  259|    0    -1     0     9   -26    14  -.36   11   10 |  -14746    1277     22    161
        |                    -15    16                       |
ngs  213|   -2    -2     0   155   149    15  -.17   11    9 |   11559    -534   2106   3140
        |                    -18    87                       |
sio  260|   -1     0     1    21  -365  -566  -.16   22   20 |     ---     ---    ---    ---
        |                    -85   189                       |

Table 2.1578.6   GPS week: 1578   Day: 6   MJD: 55296.000                            

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  247|    0     0     0    28   -42    -4  -.21    8    8 |    -369    -674     19     60
        |                     32    28                       |
emr   86|    1     0     6     0   -41    51   .46   19   19 |    3219    -757     16     77
        |                    -28   -64                       |
esa  140|    2     0    -4  -181   -26   -27   .27   10    9 |     603   -3228     13     86
        |                     29    84                       |
gfz  199|    1    -1     0    59   -74   -18  -.08   14   13 |      98    -222     21     99
        |                    -40    53                       |
grg  105|   -1     0     4   -70  -144    14   .92   26   23 |     -65    -207     74    208
        |                     25    59                       |
igr  n/a|   -2     0     0   -22   -14    49   .10    7    7 |   12207   -1663     22     58
        |                     14    10                       |
jpl  131|   -3    -1     0   -80   -26    71   .48   19   18 |    4175    -380     17    110
        |                     33    21                       |
mit  259|    0     1     1    -5   -28    10  -.36   14   12 |  -11620    1562     23    164
        |                    -11    19                       |
ngs  213|   -1    -2     1   132   155   -12  -.19   10    7 |   14388   -4841   2046   3317
        |                     37    50                       |
sio  260|   -1     2     3    11  -385  -560  -.20   21   18 |     ---     ---    ---    ---
        |                    -82   203                       |

       
       
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 3.1578.0   GPS week: 1578   Day: 0   MJD: 55290.000                            

        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  ---  ---  ---  ---   23  ---   18   29  ---   15 |    31  ---  ---  ---  ---   34  ---   35   45  ---    33
   2E |    9   20    7    9   23    4   26   16   12   14    5 |    15   25   17   22   25   16   24   19   21   16    16
   3  |    8   15    6   12   17    7   15   16    8   17    4 |    25   27   33   30   31   26   26   33   35   30    27
   4E |   12   18    6   13   28    7   17   10   16   24    5 |   119  124  119  120  129  122  126  122  118  125   120
   5  |    9   21    7   16   26    6   23   10   11   23    5 |    26   36   30   40   42   27   35   30   34   26    29
   6  |    8   15    7   11   18    4   16   12    6   17    4 |    33   36   40   39   37   34   35   40   39   40    35
   7E |   10   15    8   16   20    4   17   13   12   20    5 |    51   49   53   50   54   51   52   52   60   50    52
   8  |   14   14   10   14   17    4   13    5   11   22    4 |    36   36   38   36   40   35   37   40   47   39    38
  10  |    6   11    4   13   17    6   12   16    9   15    4 |    29   24   26   29   19   28   23   37   36   24    29
  11E |    9   18    8   15   35    9   22    8   10   15    5 |    15   32   25   27   41   20   30   22   25   23    21
  12  |    8   24    8    9   23    6   18   10    9   28    4 |    26   32   32   28   44   29   32   29   31   26    29
  13  |    7   16    5   15   44    4   21   10    6   10    4 |    17   28   20   20   51   19   32   21   21   16    18
  14  |    8   24    7   15   25    4   26   10   11   21    5 |    20   28   24   30   39   20   28   21   24   20    22
  15  |    8   22   10   12   29    4   25    8   12   21    5 |    20   34   31   29   42   26   35   23   30   20    25
  16  |   10   21    6   12   27    5   27   13   12   30    5 |    20   25   24   21   29   17   28   21   25   21    19
  17  |    9   23    9   12   31    9   28   19   12   25    6 |    30   31   26   33   32   30   35   23   30   24    25
  18  |    6   20    9   11   25    4   28    9    8   25    5 |    22   31   26   29   34   23   32   25   24   27    23
  19  |    8   28   10   16   25    8   31   10   10   20    6 |    18   37   19   20   38   19   40   18   28   18    21
  20  |    6   22    7   17   36    6   25   15   11   21    5 |    29   40   35   40   44   32   40   37   31   32    32
  21E |    9   17    7   11   24    6   24    7   11   18    4 |    17   23   21   18   35   18   25   16   25   23    18
  22  |    6   19    7   12   28    5   29   14    9   28    5 |    25   29   28   31   36   24   28   27   29   31    25
  23  |    9   23    7   13   42    5   25   14    8   17    5 |    17   31   21   23   42   18   32   20   19   14    18
  24E |   12   17    9   12   23    5   14   12   10   23    5 |   106  103  104  108  100  106  104  110  111  100   106
  26  |    6   17    6    7   26    5   14   10    8   17    3 |    23   23   27   26   28   24   24   25   26   18    24
  27E |   10   23   10   12   19    9   18   10   21   18    6 |    29   34   37   40   38   31   34   34   40   33    32
  28  |    7   21    8   14   47    7   21   12    9   39    5 |    24   30   30   37   45   26   26   29   31   26    27
  29  |   10   22    8   15   22    5   24    9   10  ---    5 |    25   38   31   32   41   28   34   27   31  ---    28
  30  |    5   17    5    7   18    5   14    9   12   19    3 |    47   44   52   41   56   45   44   51   50   48    48
  31E |   16   25    7   12   22    9   25   18   11   15    6 |    50   59   54   52   54   52   54   44   56   52    51
  32  |   10   20    5   16   25    6   16   18    9   24    5 |    12   19   20   24   31   15   22   20   19   19    14
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |    9   20    8   13   27    6   22   12   11   22      |T   31   38   35   37   44   33   38   35   38   33    33
 WRMS |    8   20    7   13   24    6   22   12    8   20      |NE  24   31   28   30   38   25   31   28   30   25    26
 MEDI |    9   20    7   12   25    5   22   10   10   20      |MD  25   32   30   30   40   26   32   27   31   26    27

Table 3.1578.1   GPS week: 1578   Day: 1   MJD: 55291.000                            

        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  |   26  ---  ---  ---  ---   32  ---   20   35  ---   20 |    30  ---  ---  ---  ---   36  ---   26   34  ---    25
   2E |    9   23    6   11   49    4   22   11    8   14    5 |    14   27   18   19   52   17   22   18   25   18    17
   3  |    8   17    6   11   13    5   13   14    8   14    4 |    18   24   23   21   29   21   23   25   26   22    20
   4E |   12   17   10    9   23    7   20   10   21   19    6 |   136  143  142  139  148  141  145  141  139  149   140
   5  |   10   22    8   13   28    6   24   11    7   30    5 |    27   40   30   34   43   28   37   24   28   23    27
   6  |    8   19    6   10   14    4   13   12    8   16    4 |    30   35   37   39   39   34   33   36   36   33    34
   7E |    9   21   11   13   17    5   17   12    8   13    5 |    25   34   26   26   31   25   31   28   30   25    25
   8  |   11   17    9   12   12    5   12   13   11   22    4 |    32   37   34   31   39   31   35   34   32   36    32
  10  |    8   15    6   10   18    5   13   19   12   17    5 |    28   28   24   29   20   27   25   33   33   28    27
  11E |   11   20   10   17   26    5   17   17    8   11    5 |    16   29   24   25   39   21   28   26   28   24    21
  12  |    8   22    8   11   25    6   19    9   10   27    4 |    18   31   25   23   40   20   29   17   22   17    20
  13  |    7   21    8   12   35    7   22    9    5   10    4 |    14   30   21   17   44   16   30   17   20   15    17
  14  |   10   24    8   14   37    4   26    8    7   16    5 |    18   25   18   22   39   16   25   16   21   16    16
  15  |   11   21    8   10   31    4   26   12    9   18    5 |    19   34   26   31   39   25   32   24   24   25    22
  16  |    9   22    8   12   23    4   22   15    7   34    5 |    14   25   19   20   31   14   25   16   18   17    13
  17  |    9   26   12   16   33    5   29    9   11   26    6 |    26   27   16   30   28   21   27   22   25   23    20
  18  |    6   23    8   11   26    4   25    8    5   23    5 |    26   36   31   26   40   27   36   24   32   30    27
  19  |    7   27    8   13   23    7   28    9    9   19    5 |    14   34   20   22   33   16   32   16   20   14    17
  20  |    5   24    7   14   33    6   26   11   10   19    5 |    30   40   35   32   46   30   40   33   37   31    33
  21E |   12   18    5   10   53    2   21    8    8   12    4 |    23   27   23   23   52   20   27   20   25   19    20
  22  |    7   21    9   12   28    6   26   11    8   25    5 |    22   31   26   24   38   22   30   23   29   29    22
  23  |    7   27    6   12   42    6   26    9    7   18    5 |    17   32   21   18   46   17   30   16   20   15    17
  24E |   11   21    7   12   26    5   13   11    8   22    4 |   100   96   99  107   87   99   93  102  100   96    99
  26  |    7   16    6    7   24    5   14    8    9   14    3 |    15   21   18   18   23   16   19   19   20   12    16
  27E |   10   25   13   12   17    6   17    9   20  ---    6 |    16   27   28   23   28   19   26   19   28  ---    18
  28  |    7   24    9   13   24    6   21    8    8   39    5 |    21   29   23   25   35   20   28   22   26   28    21
  29  |   16   21    8   15   23    4   25    9   12  ---    6 |    39   43   37   36   45   36   35   34   40  ---    36
  30  |    7   14    7    9   16    3   15    8   10   19    3 |    35   36   38   33   45   34   38   37   38   35    35
  31E |    6   22    7    9   20    7   22   12    8   11    4 |    22   33   27   29   30   24   28   21   31   21    24
  32  |    9   20    6   13   26    4   18   17    6   19    5 |    12   21   17   20   24   13   21   25   18   20    15
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |    9   21    8   12   28    5   21   11   10   21      |T   28   37   31   32   42   29   35   30   33   30    29
 WRMS |    8   21    8   12   22    5   21   10    7   19      |NE  22   31   25   26   36   23   29   24   27   22    22
 MEDI |    9   21    8   12   25    5   21   11    8   19      |MD  22   31   25   25   39   21   30   24   28   23    21

Table 3.1578.2   GPS week: 1578   Day: 2   MJD: 55292.000                            

        Weighted Average                                            Orbit Dynamics (7 days)
 PRN  |  cod  emr  esa  gfz  grg  igr  jpl  mit  ngs  sio  IGS |   cod  emr  esa  gfz  grg  igr  jpl  mit  ngs  sio   IGS
------+--------------------------------------------------------+---------------------------------------------------------
  X1  |   18  ---  ---  ---  ---   30  ---   14   31  ---   15 |    24  ---  ---  ---  ---   34  ---   25   35  ---    25
   2E |   11   14   10    9   48    5   23   14   10   13    5 |    12   22   15   16   47   15   22   15   20   16    14
   3  |    8   13    9   10   18    9   15   11   15   13    4 |    20   26   29   27   29   22   23   27   28   25    23
   4E |   16   25   11   14   31    8   19   15   25   44    7 |   130  131  132  129  142  131  135  121  135  120   128
   5  |    9   21    8   18   34    7   21    9   10   27    5 |    25   38   29   35   38   29   34   24   29   23    26
   6  |    9   12    8   10   18    7   16   10   16   10    4 |    22   25   31   27   31   25   25   31   31   28    26
   7E |    6   20   10   14   25    8   20   19   14   20    5 |    31   41   35   30   39   31   38   34   30   31    32
   8  |   13   17    8   16   18    6   13   14    7   24    5 |    31   37   30   33   36   27   33   28   26   36    29
  10  |    8   10    5   19   21    8   13   13    9   19    4 |    30   27   25   31   20   28   23   33   31   27    27
  11E |    7   16   10   18   20    7   15   15   12   14    5 |    19   31   20   32   37   21   30   25   25   26    21
  12  |    9   21   10   14   25    6   19   11    9   28    5 |    21   33   24   30   39   22   30   21   23   18    22
  13  |    8   18    6   15   56    9   26    9    9   13    5 |    20   33   24   21   53   22   32   17   19   16    19
  14  |    9   25   10   15   24    6   23   11   12   18    6 |    20   27   26   26   35   19   25   19   24   19    19
  15  |    8   23    8   10   34    7   22   13   12   18    5 |    21   31   26   21   35   23   26   20   19   18    21
  16  |    9   19    5   10   23    9   22   10   15   31    5 |    19   26   21   19   30   16   24   18   26   18    18
  17  |    9   21    9   16   31    5   24    8   10   28    5 |    26   26   18   20   24   22   27   22   24   22    19
  18  |    8   22   10   10   26    5   24    9    9   22    5 |    22   33   26   26   37   22   31   20   19   22    22
  19  |    7   24   11   14   24    6   28    9   15   17    6 |    14   29   13   20   33   14   31   13   20   15    14
  20  |    7   21    9   18   37    7   25   12    6   20    5 |    28   38   36   35   46   31   38   31   33   27    31
  21E |    9   17    8   11   24    7   21    9    6    9    4 |    12   23   16   13   30   11   20   12   19   12    12
  22  |    6   20   10   12   28    6   26    9   11   22    5 |    25   30   28   26   36   24   29   24   24   25    24
  23  |    8   21    9   15   42    9   26    9    8   19    5 |    22   32   23   23   42   21   29   16   19   16    19
  24E |   10   21    6   13   22    5   13   11    7   22    4 |    90   82   86   89   71   87   83   92   90   79    88
  26  |    6   13    7    7   23    5   14    8    8   13    3 |    23   23   26   21   26   22   21   25   22   17    22
  27E |    9   23    8   10   25    9   16    9   23   18    5 |    23   32   29   28   37   26   29   26   33   27    24
 X28  |    9   24    8   17   26    7  ---    9   14  ---    6 |    21   33   28   29   38   23  ---   24   28  ---    24
  29  |   11   20    9   15   26    7   21    8   10  ---    5 |    30   37   34   35   36   32   29   34   37  ---    32
  30  |    5   13    6    9   18    7   11    9   10   20    3 |    29   36   34   36   43   31   36   30   30   25    32
  31E |    5   17    8    9   21    5   20   10   11   12    4 |    32   39   34   29   40   34   37   30   44   31    33
  32  |    9   17    5   18   22    8   16   13   10   17    5 |    18   23   19   21   25   18   22   24   22   19    18
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |    9   19    9   14   29    7   20   11   12   21      |T   28   36   31   32   40   29   34   29   32   28    28
 WRMS |    9   19    8   14   25    7   20   10    8   17      |NE  22   30   26   26   34   23   28   23   25   21    23
 MEDI |    9   20    8   14   25    7   20   10   10   19      |MD  22   32   26   27   37   23   29   24   26   23    23

Table 3.1578.3   GPS week: 1578   Day: 3   MJD: 55293.000                            

        Weighted Average                                            Orbit Dynamics (7 days)
 PRN  |  cod  emr  esa  gfz  grg  igr  jpl  mit  ngs  sio  IGS |   cod  emr  esa  gfz  grg  igr  jpl  mit  ngs  sio   IGS
------+--------------------------------------------------------+---------------------------------------------------------
  X1  |   14  ---  ---  ---  ---   29  ---   16   29  ---   14 |    21  ---  ---  ---  ---   33  ---   27   35  ---    21
   2E |   10   21   12   12   20    5   27   22   10   13    6 |    19   31   24   16   23   19   28   16   18   19    19
   3  |    6   15    7   11   15    5   14    9    8   11    3 |    21   24   25   28   27   22   20   28   27   27    22
   4E |   20   21   15   17   29    6   20   23   26   47    8 |   143  154  150  148  161  147  156  153  142  167   148
   5  |   10   21    8   17   27    6   23   13   13   22    5 |    25   40   31   38   41   29   35   28   35   30    28
   6  |    6   16    7   12   17    5   18   10    8    8    4 |    32   32   35   39   33   33   28   38   36   36    33
   7E |    7   19    8   17   18    7   20   11    9   14    5 |    35   44   41   36   46   39   44   37   38   35    37
   8  |   13   16    7   16   12    6   14   15    9   26    5 |    35   42   41   37   41   36   40   42   37   38    37
  10  |    7   14    5   15   16    4   11    7    8   12    3 |    29   26   25   30   17   26   23   33   31   23    27
  11E |    8   21    9   12   20    5   20   11    8   16    4 |    19   31   24   26   32   21   28   21   24   24    22
  12  |    9   20    9   16   22    4   21    9   11   26    5 |    23   30   23   27   36   23   29   25   26   21    23
  13  |    8   17    6   13   46    4   24    9    7   13    4 |    16   32   26   17   49   18   28   17   19   13    19
  14  |    9   28    8   15   22    4   25    9    8   15    5 |    15   30   24   26   34   20   30   22   18   20    19
  15  |    8   22    7   16   27    5   23   13   10   17    5 |    19   29   27   28   36   23   28   24   20   21    21
  16  |    5   22    7    9   24    6   23   13   10   30    5 |    17   26   24   21   30   17   27   21   22   20    17
  17  |    6   19   10   15   29    4   24    7   11   27    5 |    24   24   16   22   26   19   25   21   22   24    19
  18  |    7   25   10   15   28    5   27   10    8   21    5 |    18   34   24   26   36   22   33   21   22   22    21
  19  |    7   24   11   14   25    6   28    9    9   19    5 |    14   31   15   19   33   16   31   14   21   17    15
  20  |    5   25    8   16   34    7   25   10    9   18    5 |    28   42   36   34   45   30   40   32   28   29    31
  21E |   10   20    6   12   32    6   23    9   13   10    5 |    15   29   22   18   40   16   28   17   26   19    18
  22  |    7   23    9   13   31    6   23   11    7   18    5 |    19   32   24   24   37   21   29   24   22   24    21
  23  |    7   21    9   13   38    4   26    8    8   18    5 |    16   29   24   20   39   18   27   15   17   14    17
  24E |    9   18    8   14   18    5   14   10   15   20    5 |   104  101  103  108   97  104  100  108  104   99   103
  26  |    5   15    8   10   21    4   14    8    9   13    3 |    18   23   23   20   29   19   21   21   18   16    18
  27E |    9   25    9   11   23    6   16   11   18   17    5 |    24   31   32   35   39   27   31   27   34   24    26
  28  |    8   20    7   18   27    5   22   10    8   37    5 |    20   32   24   29   32   20   26   24   21   25    21
 X29  |    8   23    9   11   30    7  ---   19   13  ---    6 |    80   88   83   79   77   79  ---   77   81  ---    80
  30  |    7   14    9    8   17    5   12   11    5   19    4 |    40   43   41   39   48   39   41   44   39   40    39
  31E |    6   22    8    7   19    5   17    9   11   11    4 |    30   42   34   36   40   34   39   31   34   31    32
  32  |    7   20    7   16   18    5   18   12    9   14    5 |    12   21   17   19   25   13   21   17   18   15    13
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |    9   20    8   14   25    5   21   12   11   21      |T   31   40   35   36   43   32   37   34   34   31    32
 WRMS |    8   20    8   14   24    5   21   10    7   16      |NE  24   33   28   29   36   25   28   27   27   23    25
 MEDI |    7   21    8   14   23    5   21   10    9   17      |MD  21   31   25   28   36   22   28   24   26   24    21

Table 3.1578.4   GPS week: 1578   Day: 4   MJD: 55294.000                            

        Weighted Average                                            Orbit Dynamics (7 days)
 PRN  |  cod  emr  esa  gfz  grg  igr  jpl  mit  ngs  sio  IGS |   cod  emr  esa  gfz  grg  igr  jpl  mit  ngs  sio   IGS
------+--------------------------------------------------------+---------------------------------------------------------
  X1  |    9  ---  ---  ---  ---   15  ---   16   13  ---    9 |    23  ---  ---  ---  ---   32  ---   25   34  ---    25
   2E |   10   17   10    8  ---    5   25   18   10   12    5 |    12   24   16   15  ---   11   24   15   19   14    12
   3  |    6   14    7    8   22    4   13   10    8   12    3 |    15   24   24   24   32   19   19   21   25   21    19
   4E |   11   20   10   11   27    9   18    9   18   16    5 |   112  119  117  118  131  114  123  112  112  118   114
   5  |   14   18   10   13   28    7   21   12    7   18    5 |    29   34   28   40   42   25   35   27   30   25    26
   6  |    6   16   10   10   21    4   16   10    7    8    4 |    21   27   28   30   33   22   19   26   28   24    23
   7E |    8   18   10   14   17    6   18    9    8   11    4 |    27   35   23   24   36   25   33   26   27   25    24
   8  |   14   21    9   13   18    5   14   16   10   25    5 |    33   45   39   37   38   35   40   39   38   38    35
  10  |    9    9    6    7   17    5   10   13    8   14    3 |    32   33   32   30   24   32   27   41   37   30    33
  11E |    8   17   10   10   20    7   17   11    9   17    4 |    24   35   30   42   39   27   33   29   31   31    26
  12  |   11   19    9   14   23    5   20    9    9   26    5 |    19   29   28   32   38   24   30   22   28   17    24
  13  |    5   19   10   10   39    4   24    9   10   13    5 |    15   28   21   22   44   16   29   14   23   11    16
  14  |    8   26    9   17   25    4   25    9    9   16    5 |    17   28   15   24   33   15   25   17   21   15    15
  15  |    7   18    8   11   33    6   20   11   11   17    4 |    15   27   21   24   39   18   26   21   22   18    17
  16  |    9   21    8   10   25    4   24   12   10   29    5 |    16   24   20   24   33   16   26   21   23   19    16
  17  |    6   18   10   12   28    7   24   13    6   30    5 |    21   21   14   27   25   17   23   23   22   27    17
  18  |    6   25   12   13   29    4   26   10    7   23    5 |    16   32   24   22   38   18   31   20   21   20    19
  19  |    6   25   14   13   39    5   28    8    7   20    5 |    11   27   13   24   42   10   30   10   20   13    10
  20  |    7   24   12   12   31    6   27   13    7   17    5 |    21   35   28   27   40   23   36   24   24   22    23
  21E |   10   17    9   10   25    3   23    8    8   16    4 |    12   27   25   19   33   16   25   15   18   20    17
  22  |    6   21   10   11   32    4   24   12    6   18    5 |    17   26   21   22   37   17   25   23   22   22    18
  23  |    8   23    9   12   41    5   27    8   10   17    5 |    14   29   21   34   41   15   28   15   21   13    15
  24E |   11   17   11   11   21    4   14    6   12   23    4 |    91   82   88   84   79   89   84   92   95   81    88
  26  |    8   13    6    8   23    4   12    9    7   14    3 |    13   21   14   16   26   14   19   15   19   12    13
  27E |    9   22   10   11   23    7   13   15   20   20    6 |    16   26   21   25   33   18   22   21   30   20    16
  28  |    8   19   11   10   25    4   21   16    6   38    5 |    18   26   20   35   30   18   25   22   22   22    17
  29  |    9   23   11   11   26    4   24    9   10  ---    5 |    37   38   30   33   40   31   51   35   32  ---    32
  30  |    6   13    9    7   14    3   12    9    8   18    3 |    31   34   39   42   42   32   34   32   37   27    34
  31E |    9   32    9   10   24    4   24    8    9   11    5 |    22   39   18   26   36   20   31   23   25   21    20
  32  |    8   21    8   15   20    6   19   13    9   14    5 |    15   21   16   23   25   15   20   23   22   18    16
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |    9   20   10   11   26    5   21   11   10   19      |T   25   34   28   32   40   26   33   28   30   26    26
 WRMS |    8   20   10   11   25    5   21   11    7   16      |NE  19   28   22   27   35   20   27   22   25   19    20
 MEDI |    8   19   10   11   25    5   21   10    9   17      |MD  18   28   23   26   37   18   28   23   24   21    19

Table 3.1578.5   GPS week: 1578   Day: 5   MJD: 55295.000                            

        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  ---  ---  ---  ---   23  ---   16   29  ---   15 |    20  ---  ---  ---  ---   32  ---   19   34  ---    20
  X2E |    4  ---  ---   16  ---   33  ---  ---  ---  ---    6 |    10  ---  ---   16  ---   14  ---  ---  ---  ---     6
   3  |    8   13    7   45   12    6   13    8   11   14    4 |    16   25   23   47   22   19   20   20   23   22    19
   4E |   10   21   10   33   25    8   17   13   19   23    6 |    92   99   93   93  109   93  100   89   89   98    92
   5  |   10   20    8  107   28   10   24   12    9   24    8 |    28   34   27  106   41   25   34   31   33   27    28
   6  |    8   14    6  105   14    6   14    6   11    9    6 |    27   31   31  105   26   28   26   30   33   29    29
   7E |    7   16   12   47   12    8   19    8    8   11    5 |    25   31   25   53   30   22   32   23   29   23    25
   8  |   15   19    8  113   27    7   13   10   10   22    8 |    59   65   63  105   72   59   67   64   62   69    61
  X9E |    4  ---  ---  ---  ---  ---  ---  ---  ---  ---    0 |    79  ---  ---  ---  ---  ---  ---  ---  ---  ---    76
  10  |    7   11    6   28   17    6   12   16    7   13    4 |    32   33   30   30   22   32   26   44   30   30    31
  11E |    8   18    9  114   18    4   18   11   11   17    7 |    26   33   29  117   37   24   29   31   27   29    28
  12  |   10   19    8   55   19    6   20   12    9   25    6 |    18   29   21   54   35   20   30   21   21   20    20
  13  |    7   18   10   86   37    5   24   11    9   14    7 |    15   29   22   77   45   15   29   14   14   11    15
  14  |    9   19   11   35   25    4   24   10   13   16    6 |    15   24   17   33   33   14   25   16   19   16    14
  15  |    9   22    9   67   27    8   22   12   11   20    6 |    21   29   24   63   37   19   29   26   22   20    20
  16  |    8   18    7   72   20    6   21   11    9   29    6 |    15   25   18   70   33   15   27   19   18   16    17
  17  |    7   21   11   96   27    4   26   13   13   29    7 |    21   23   13   85   24   16   24   23   23   26    17
  18  |    9   21    8   40   31    5   24   14    7   27    5 |    16   30   19   40   35   16   29   19   19   19    17
  19  |    7   21   14  103   23    9   27    7   10   21    8 |    16   26   17   95   30   12   31   16   21   17    16
  20  |    8   21   14   78   30    5   26   12   10   18    7 |    24   38   27   79   45   24   36   27   28   19    26
  21E |    9   16    5   25   26    5   21    9    9   45    4 |    13   24   18   20   34   14   25   15   19   46    15
  22  |    7   20    8   30   29    6   23   15    8   22    5 |    17   27   16   33   34   15   25   20   21   22    15
  23  |    7   21   12  159   38    6   27    9   10   18    6 |    13   27   21  135   42   14   26   14   15   13    13
  24E |   13   15   12  143   24    8   15   13   11   30    9 |   108  102  103  184   93  106  102  111  110  102   107
  26  |    6   12    6   20   23    5   12    6    6   14    3 |    16   20   20   21   25   15   20   18   20   15    16
  27E |    9   21   11   98   17    6   14   13   22   16    8 |    14   25   22   85   31   16   22   19   26   18    16
  28  |    7   20   10  123   23    8   22   13    8   38    8 |    12   29   17  105   31   17   24   20   20   22    15
  29  |    8   18    8   28   25    4   26    9   10  ---    5 |    49   51   48   63   47   49   40   51   53  ---    50
  30  |    8   13    7   69   15    5   15   13    8   17    5 |    32   39   39   57   46   34   39   35   37   32    35
  31E |    5   17    9   64   30    5   21    9    7   12    5 |    18   28   17   54   36   17   26   23   21   20    18
  32  |    8   16   11   33   18    5   19    6   10   16    5 |    19   21   16   37   29   16   21   20   24   19    18
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |    9   18    9   82   25    6   21   11   11   22      |T   28   35   29   71   40   27   34   30   31   29    28
 WRMS |    8   18    9   82   22    6   21   10    9   20      |NE  21   29   23   66   34   21   28   23   25   20    21
 MEDI |    8   18    9   67   24    6   21   11   10   18      |MD  19   29   22   63   34   17   27   21   23   22    19

Table 3.1578.6   GPS week: 1578   Day: 6   MJD: 55296.000                            

        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  |   13  ---  ---  ---  ---   26  ---   20   17  ---   11 |    29  ---  ---  ---  ---   24  ---   38   21  ---    28
  X2E |   12  ---   11   11 3315    7   30   27    8   15    7 |    10  ---    4    6  115   10   19    5    6    6     6
   3  |    7   14    7   10   17    5   12   11    9   15    4 |    17   24   24   31   25   20   19   27   27   27    21
   4E |   12   18   13   15   38    8   18   20   16   25    6 |   112  120  119  114  143  115  123  113  109  122   114
   5  |    7   23    9   18   27    8   24   11    9   22    5 |    27   37   28   36   40   28   35   28   26   31    27
   6  |    7   16    7   10   18    5   13    8    8   10    3 |    28   29   33   51   29   28   26   35   34   33    30
   7E |    6   18   12   18   21    7   20    8    8   11    5 |    38   44   41   40   49   40   43   38   39   36    38
   8E |   14   21   10   19   27    7   14   21    9   28    6 |    41   53   44   56   55   45   51   46   43   49    43
  X9E |   16  ---   18  ---  ---   17  ---   28  ---  ---   14 |    52  ---    5  ---  ---   11  ---    6  ---  ---    45
  10  |    6   15    9   12   19    5   12   27    9   13    5 |    31   29   31   36   25   30   27   38   34   27    29
  11E |    7   18    9   14   23   10   16   12    9   18    4 |    32   41   37   50   45   34   41   40   34   46    35
  12  |    9   19    9   11   20    7   17   13    8   25    4 |    19   31   26   32   39   23   31   25   21   20    22
  13  |    8   17    9   13   42    7   21   11    6   13    4 |    16   27   20   33   45   16   27   16   16   11    15
  14  |    8   20    8   12   27    6   19   12   10   20    5 |    21   27   25   28   35   20   28   23   20   23    21
  15  |   11   23   11   20   30    7   22   12    9   21    6 |    18   28   27   31   35   23   26   26   22   18    20
  16  |    8   19    9   14   24    5   21   14    8   32    5 |    17   23   19   27   29   16   24   19   21   17    15
  17  |    8   19   15   14   29    7   22   14   11   27    5 |    24   26   19   39   26   20   24   24   25   26    20
  18  |    7   22    8   14   28    9   23   14    9   31    5 |    22   33   26   34   40   23   36   28   27   23    24
  19  |    7   23   13   11   23    9   25   10    6   24    5 |    15   28   16   32   30   16   31   18   20   22    15
  20  |    8   21   10   11   32    9   26   16    9   17    5 |    23   38   30   37   45   25   35   29   28   20    26
  21E |    6   18    8   12   20    9   22   15    8   10    5 |    16   24   20   17   32   15   26   17   17   16    15
  22  |    7   19   10   11   31    9   21   17   11   25    5 |    22   30   27   33   37   21   30   30   27   27    23
  23  |    8   19   10   12   35    6   24   12    8   18    5 |    17   27   21   49   38   19   26   17   20   15    16
  24E |   11   16   15   19   15    8   18   21   17   23    6 |   123  120  125  145  110  121  118  127  121  118   122
  26  |    6   12    6    9   17    7    9    5    7   15    3 |    17   17   19   20   23   15   20   18   19   12    16
  27E |    9   20   11   17   15    6   14   13   21   17    6 |    26   30   35   31   40   27   30   27   35   25    27
  28  |    6   20   10   15   26    7   20   18    8   41    5 |    20   29   27   42   34   23   26   28   25   30    23
  29  |    8   19   10   11   23    8   21    9    9  ---    4 |    35   38   35   39   33   35   31   36   38  ---    34
  30  |    7   12    8    7   15    5    9   19    7   16    4 |    38   45   45   40   51   40   45   47   38   40    42
  31E |    7   17    6    9   27   10   21   11   10   11    4 |    37   46   39   30   46   42   46   38   41   39    38
  32  |    8   17    9   10   18    4   19   11    7   15    4 |    12   20   19   16   24   14   19   21   17   16    15
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |    8   19   10   14   26    7   19   14   10   21      |T   30   38   32   40   45   30   36   33   32   31    31
 WRMS |    8   19    9   13   23    7   18   12    7   18      |NE  22   29   25   34   34   22   28   27   25   23    22
 MEDI |    8   19    9   12   24    7   20   13    9   18      |MD  23   29   27   34   38   23   30   28   26   25    24



Table 4: Precise Navigation Summary.

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

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

Table 4.1578   GPS week: 1578   MJD: 55290.0-55296.0

CENT| CLK EPO  |        BRUS       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 2868 |U    9     7    20 |U    9    11    25 |U    8     7    19 |
emr | emr 2741 |    10     9    29 |U    9    11    29 |    13    10    26 |
esa | esa 2783 |     9     8    23 |U    9    10    27 |     8     8    19 |
gfz | gfz 2754 |U    8     7    22 |U    9    12    31 |U    8     7    21 |
grg | grg 2756 |    18    11    32 |U   10    14    42 |    11     9    26 |
igr | igr 2820 |     8     8    24 |    10    13    30 |     9     8    20 |
igs | igs 2783 |     9     8    22 |     9    10    28 |     8     8    20 |
jpl | jpl 2729 |U   14     9    36 |     9    14    29 |U   12     8    22 |
mit | mit 2880 |U    8     8    23 |U   10    12    27 |U    9     9    22 |



Table 5: Daily Precise Navigation Summary using the corresponding Centre orbit 
         positions and satellite clock corrections at 15 min intervals.

         Each line gives the daily station RMS w.r.t. the estimated coordinates 
         for the Latitude, Longitude and Height components.
        
         CLK  - Satellite clocks used.
         EPO  - Number of satellite clock epochs available for that day.
         Units: mm.

Table 5.1578.0   GPS week: 1578   Day: 0   MJD: 55290.0

CENT| CLK EPO  |        BRUS       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 2872 |    10     7    22 |    10     9    22 |     8     7    13 |
emr | emr 2772 |    11     7    27 |    10     9    20 |    10     8    27 |
esa | esa 2784 |    12    11    29 |    10     9    23 |     7     7    15 |
gfz | gfz 2770 |     9     6    18 |    11    10    23 |     7     7    17 |
grg | grg 2784 |    10    10    22 |    11    16    44 |     8     8    27 |
igr | igr 2848 |    10     6    18 |    11    10    22 |     7     7    17 |
igs | igs 2840 |    12    10    22 |    11     9    25 |     7     7    17 |
jpl | jpl 2770 |    11    10    28 |    11    12    21 |     9     7    21 |
mit | mit 2880 |     9     8    20 |    11    10    22 |     9     8    16 |

Table 5.1578.1   GPS week: 1578   Day: 1   MJD: 55291.0

CENT| CLK EPO  |        BRUS       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 2865 |     8     7    23 |    12    10    37 |     6     6    15 |
emr | emr 2772 |    10    11    32 |    14     9    33 |    14    10    26 |
esa | esa 2784 |     9     8    24 |    12    10    35 |     7     7    14 |
gfz | gfz 2769 |     7     6    21 |    12    13    49 |     7     6    15 |
grg | grg 2784 |    12    11    39 |    11    12    33 |    11     9    29 |
igr | igr 2768 |     9     9    32 |    12    10    34 |     7     6    14 |
igs | igs 2795 |     9    10    22 |    12     9    37 |     7     6    13 |
jpl | jpl 2771 |     9     9    30 |    13     9    37 |     9     7    17 |
mit | mit 2880 |     9     9    25 |    12     9    37 |     7     6    20 |

Table 5.1578.2   GPS week: 1578   Day: 2   MJD: 55292.0

CENT| CLK EPO  |        BRUS       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 2863 |     6     7    20 |    10    17    32 |     9     9    19 |
emr | emr 2765 |     8     9    38 |    10    11    35 |    13    11    20 |
esa | esa 2784 |     7     6    31 |    10    15    35 |    10    10    22 |
gfz | gfz 2763 |     7     5    30 |    10    14    34 |    10     8    20 |
grg | grg 2784 |    10     8    36 |    12    22    50 |    11    11    22 |
igr | igr 2831 |     7     6    32 |    11    18    45 |    10     8    20 |
igs | igs 2776 |     7     6    32 |     9    13    31 |    10    10    19 |
jpl | jpl 2673 |     9     6    31 |    10    29    41 |    29    10    27 |
mit | mit 2880 |     7     6    34 |    11    17    30 |    10    10    20 |

Table 5.1578.3   GPS week: 1578   Day: 3   MJD: 55293.0

CENT| CLK EPO  |        BRUS       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 2864 |     9     8    19 |     8     9    26 |     6     6    18 |
emr | emr 2762 |    11    12    27 |    11    10    32 |     8     7    24 |
esa | esa 2784 |     9     9    23 |     8     7    25 |     7     7    19 |
gfz | gfz 2764 |     9     8    21 |     9     9    29 |     7     7    21 |
grg | grg 2784 |     9    10    30 |    11     9    26 |     7     7    21 |
igr | igr 2840 |     8     8    19 |     8     8    27 |     7     6    17 |
igs | igs 2811 |     9     8    21 |     8     8    24 |     7     7    17 |
jpl | jpl 2676 |    14    12    45 |    10    10    29 |     6     7    20 |
mit | mit 2880 |     8     7    22 |     8     8    28 |     8     8    18 |

Table 5.1578.4   GPS week: 1578   Day: 4   MJD: 55294.0

CENT| CLK EPO  |        BRUS       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 2875 |     8     6    23 |     7    13    20 |     7     5    23 |
emr | emr 2770 |     8     7    25 |     8    18    22 |    16    12    24 |
esa | esa 2784 |     8     6    21 |     8    15    19 |    10     6    19 |
gfz | gfz 2773 |     8     6    23 |     9    17    21 |     9     6    20 |
grg | grg 2688 |    10     9    31 |    12    23    23 |    12     9    22 |
igr | igr 2830 |     8     7    27 |    11    28    22 |    10     7    20 |
igs | igs 2781 |     8     6    21 |     9    15    21 |     9     7    19 |
jpl | jpl 2768 |     9     8    25 |     9    18    22 |    10     6    18 |
mit | mit 2880 |     8     6    19 |    10    24    20 |     9     6    20 |

Table 5.1578.5   GPS week: 1578   Day: 5   MJD: 55295.0

CENT| CLK EPO  |        BRUS       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 2783 |    17     9    21 |     6     9    22 |    10     6    25 |
emr | emr 2674 |    13    10    28 |     7    10    30 |    18    14    34 |
esa | esa 2688 |     9    11    19 |     6     7    27 |    10     9    26 |
gfz | gfz 2677 |    12     9    24 |     7    13    41 |    11     6    35 |
grg | grg 2688 |     8     9    21 |     7     7    37 |    14     9    37 |
igr | igr 2694 |     9    11    21 |     7     8    29 |    12    11    30 |
igs | igs 2715 |    10    10    23 |     6     8    27 |    10     7    31 |
jpl | jpl 2676 |     8     8    19 |     6     8    30 |    13    11    32 |
mit | mit 2784 |    12    10    24 |     8     9    31 |    15    13    36 |

Table 5.1578.6   GPS week: 1578   Day: 6   MJD: 55296.0

CENT| CLK EPO  |        BRUS       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 2959 |     8     8    13 |     7    12    20 |     8     9    20 |
emr | emr 2676 |    10    10    24 |     7    10    29 |    13    10    26 |
esa | esa 2879 |     8     7    18 |     7     9    24 |     8    11    19 |
gfz | gfz 2768 |     7     6    14 |     8     8    23 |     9    10    21 |
grg | grg 2784 |    65    22    44 |     9    10    83 |    11    11    28 |
igr | igr 2932 |     7     7    16 |     8    10    27 |     8    10    21 |
igs | igs 2766 |     8     8    16 |     7    10    30 |    10    11    23 |
jpl | jpl 2771 |    40     9    74 |     6    10    28 |     9     9    21 |
mit | mit 2976 |     7     8    19 |     7    10    25 |     9    10    22 |


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 6.1578   GPS week: 1578   MJD: 55290.500-55296.500

                                                         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     -25      59      57      1 |       6     15
            |      16      16      92      72      6 |       3
emr   uuuuu |      91      43      23     288      3 |      58     61
            |       9      17     110      89     10 |       7
esa   uuuuu |     -28     -30      75    -150     -6 |      19     24
            |      23      12     115      39      7 |       3
gfz   uuuuu |      11      55     -25     -76      6 |      23     28
            |      18      21      49      66      7 |       7
grg   --xxx |      --      --      22    -209     -2 |      13     16
            |      --      --     147     179     21 |       2
igr   xxxxx |      33      28      88      -6     -2 |       6     16
            |       9      20      74      81      3 |       2
irf   xxxxx |      34       6     -73      14    -16 |       7     18
            |      28      15      49      31      5 |       3
jpl   uuuuu |      39     -33      96     115      0 |      18     27
            |      16      25      71     119     11 |       5
mit   uuuuu |       7      12     -64       7    -19 |      15     24
            |      45      25      79      59      6 |       3
ngs   uuuuu |     -50     -20     -49       8      6 |       2     14
            |      45      33     113     110      5 |       5
sio   xxxxx |    -164      89    -131      45     -1 |      39     42
            |      31      23      56      40      4 |       4


Table 7.1578.0   GPS week: 1578   Day: 0   MJD: 55290.500

                                                         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 |      28     -27      83      20     -9 |       3     14
emr   uuuuu |      85      62    -188     378     14 |      47     50
esa   uuuuu |       3     -27     -21    -135     -5 |      14     22
gfz   uuuuu |      30      52      19     -31      6 |      12     21
grg   --xxx |      --      --     236      66    -22 |      15     19
igr   xxxxx |      32      32       0     -32      2 |       3     17
irf   xxxxx |     -22     -19     -88      12    -14 |       5     19
jpl   uuuuu |      48     -80      90     261      2 |      12     25
mit   uuuuu |     -81     -27     -11      42    -16 |      14     24
ngs   uuuuu |     -17      32      88    -128      3 |      -5     13
sio   xxxxx |    -229      46    -186      69      1 |      34     38

Table 7.1578.1   GPS week: 1578   Day: 1   MJD: 55291.500

                                                         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 |      26     -12     152      86     -3 |       3     15
emr   uuuuu |      81      59     -23     425     19 |      50     55
esa   uuuuu |     -40     -12     -19    -150      5 |      16     23
gfz   uuuuu |      13      69     -64     -90      2 |      15     24
grg   --xxx |      --      --     -40    -143    -31 |      14     18
igr   xxxxx |      18      27      50    -108     -4 |       3     17
irf   xxxxx |      18      -3     -61      10    -16 |       6     20
jpl   uuuuu |      56     -42      57     232      6 |      13     26
mit   uuuuu |     -24     -13     -15      49    -19 |      15     25
ngs   uuuuu |       4     -27      64     -71      1 |      -3     15
sio   xxxxx |    -175      81    -141      23      3 |      35     39

Table 7.1578.2   GPS week: 1578   Day: 2   MJD: 55292.500

                                                         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 |      55     -15     193     148      4 |       5     16
emr   uuuuu |      91      51      96     216      9 |      55     60
esa   uuuuu |     -21     -41      -1     -84     -8 |      18     26
gfz   uuuuu |      19      73     -12    -103     18 |      19     28
grg   --xxx |      --      --     104    -459    -17 |      13     17
igr   xxxxx |      46      20     236     -90     -1 |       4     18
irf   xxxxx |      56      13     -71      56    -17 |       7     20
jpl   uuuuu |      44     -42     154     115    -10 |      16     29
mit   uuuuu |      37      22     -64      88    -20 |      16     25
ngs   uuuuu |    -107     -34     -55     -99      7 |      -1     16
sio   xxxxx |    -142     107     -68      72      3 |      37     42

Table 7.1578.3   GPS week: 1578   Day: 3   MJD: 55293.500

                                                         AC LOD  AC LOD
CENT  FLAG  |   Xpole   Ypole     Xrt     Yrt    LOD |    BIAS  BIAS RMS
            |   [uas]   [uas]   [uas/d] [uas/d]  [us]|    [us]    [us]
------------+----------------------------------------+------------------
cod   xxxxx |      50     -35     -52      63      2 |       7     16
emr   uuuuu |      81      15     147     288     -8 |      60     63
esa   uuuuu |       2     -25      43    -180     -4 |      20     25
gfz   uuuuu |      25      48     -14     -43     12 |      25     29
grg   --xxx |      --      --      64    -173     12 |       9     13
igr   xxxxx |      37      22     120     -33     -3 |       7     17
irf   xxxxx |      57      20    -147      43    -24 |       9     18
jpl   uuuuu |      16     -24     167     184    -17 |      19     28
mit   uuuuu |      47      37    -207      17    -28 |      18     25
ngs   uuuuu |    -108     -28       7      15     12 |       2     14
sio   xxxxx |    -142     112    -182      98     -8 |      40     43

Table 7.1578.4   GPS week: 1578   Day: 4   MJD: 55294.500

                                                         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 |      34      -8     -43     132      0 |       9     16
emr   uuuuu |      95      29      62     185     -6 |      63     65
esa   uuuuu |     -41     -34     273    -191     -8 |      22     26
gfz   uuuuu |      19      81     -21      32      3 |      29     31
grg   --xxx |      --      --      54    -136     21 |      11     14
igr   xxxxx |      41      57      79      99      2 |       9     16
irf   xxxxx |      48      25     -97      -1    -17 |       9     18
jpl   uuuuu |      46      -9      79      80     18 |      22     27
mit   uuuuu |      30      38    -130     -48    -19 |      18     24
ngs   uuuuu |     -64     -69    -194      82      3 |       6     13
sio   xxxxx |    -144     106    -169      31     -1 |      43     45

Table 7.1578.5   GPS week: 1578   Day: 5   MJD: 55295.500

                                                         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     -55      55     -49      3 |       9     16
emr   uuuuu |     104      49      -6     219     -4 |      65     66
esa   uuuuu |     -51     -48     195    -187    -17 |      22     26
gfz   uuuuu |     -11      17      28    -140     -3 |      30     32
grg   --xxx |      --      --     -20    -419      6 |      13     17
igr   xxxxx |      29      45      55      75     -6 |       9     16
irf   xxxxx |      40      -4      16     -40    -17 |       8     18
jpl   uuuuu |      43      -8     -32     -31      1 |      25     29
mit   uuuuu |      24      11      19     -78    -21 |      17     24
ngs   uuuuu |     -47      14    -195     161     12 |       7     14
sio   xxxxx |    -149      81     -44     -26     -6 |      44     46

Table 7.1578.6   GPS week: 1578   Day: 6   MJD: 55296.500

                                                         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 |       9     -23      24      -2      9 |       6     11
emr   uuuuu |     101      37      76     304      0 |      63     65
esa   uuuuu |     -47     -20      53    -123     -3 |      17     22
gfz   uuuuu |     -16      49    -113    -156      4 |      28     30
grg   --xxx |      --      --    -241    -197     17 |      13     17
igr   xxxxx |      27      -5      76      48     -4 |       4     13
irf   xxxxx |      37       9     -65      19     -7 |       2     14
jpl   uuuuu |      16     -24     157     -35      1 |      23     28
mit   uuuuu |      18      20     -39     -20     -8 |      10     19
ngs   uuuuu |     -13     -28     -61      95      4 |       7     13
sio   xxxxx |    -166      91    -126      51     -2 |      41     42



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