[IGSREPORT-18547] Wk 1580 IGS Final Orbits

Jim Ray IGS.ACC at noaa.gov
Thu May 6 05:15:00 PDT 2010


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IGS Electronic Report   06 May 05:15:15 PDT 2010      Message Number 18547
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Author:  AC Coordinator / NOAA NGS

sum-file Version 2.0
Final IGS Orbit Combination - Week 1580   (Apr 18, 2010 - Apr 24, 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:

igs1580[0-6].sp3  IGS GPS ephemeris files in SP3 format.
igs1580[0-6].clk  IGS GPS satellite and station clocks in clock RINEX format.
igs1580[0-6].cls  IGS GPS clock combination summary report.
igs15807.erp      Earth Rotation Parameters (ERP) and their rates as well as
                  Universal Time (UT1-UTC) and Length Of Day (LOD) associated 
                  with IGS ephemerides.
igs15807.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  |  ALL   | 1 1
                0  |  COD   | DGAR
                0  |  EMR   | WTZR
                0  |  ESA   | DGAR
                0  |  GFZ   | HARB SUTH UNSA
                0  |  GRG   | CAS1 DGAR POTS WTZR
                0  |  JPL   | 4
                0  |  MIT   | 8 9 27 8 9 27 CAS1 CAS1 HARB
                1  |  ALL   | 1
                1  |  COD   | USNO ALGO BRAZ USNO
                1  |  EMR   | 4 4 WTZR WTZR
                1  |  GFZ   | BOR1 DGAR SUTH UNSA
                1  |  GRG   | ONSA
                1  |  JPL   | 4 21 BRUS
                1  |  MIT   | 4 8 27 4 8 DAV1 ALGO DAV1
                2  |  COD   | DAV1 DAV1 DGAR NRIL XMIS
                2  |  EMR   | 4 4 YELL
                2  |  ESA   | DGAR UNSA
                2  |  GFZ   | SUTH
                2  |  GRG   | DGAR ONSA
                2  |  JPL   | 4 24
                2  |  MIT   | 4 8 4 8
                3  |  COD   | BRAZ DGAR WES2
                3  |  EMR   | 4 9 27 4 9 27 ONSA WTZR METS
                3  |  ESA   | DGAR OHI2
                3  |  GFZ   | MATE METS MIZU NICO ONSA SUTH
                3  |  GRG   | DGAR WTZR
                3  |  JPL   | 4 9 27 UNSA
                3  |  MIT   | 4 8 9 18 27 4 8 9 18 27 AUCK CAS1 HOB2 NNOR TOW2
                3  |  MIT   | CAS1
                4  |  ALL   | 1 1
                4  |  COD   | XMIS
                4  |  EMR   | 4 8 27 4 8
                4  |  ESA   | MATE SCH2 SCH2
                4  |  GFZ   | 27 DGAR MAW1 SUTH
                4  |  GRG   | ONSA
                4  |  JPL   | 4 8 27
                4  |  MIT   | 8 26 8 26 MAW1 OUS2
                5  |  ALL   | 1 1
                5  |  COD   | DGAR UNBJ
                5  |  EMR   | 4 8 9 27 4 8 9 27 WTZR
                5  |  ESA   | DGAR
                5  |  GFZ   | CHUR SUTH
                5  |  GRG   | DGAR ONSA
                5  |  JPL   | 4 8 9 27
                5  |  MIT   | 8 9 24 27 8 9 24 27 USNO HARB USNO
                6  |  ALL   | 1 1
                6  |  COD   | DGAR MATE MDVJ
                6  |  EMR   | 4 8 21 4 8 9 21 MIZU WTZR MIZU
                6  |  ESA   | METS DGAR METS UNSA
                6  |  GFZ   | SUTH
                6  |  GRG   | DGAR ONSA POTS
                6  |  JPL   | 4 8 21 27
                6  |  MIT   | 8 9 21 8 9 21 26 KOUR MDVJ

 5. The following orbit solutions were excluded from the combination because 
    they were biasing the weighted average (generally indicated by long arc RMS).
    They were still used for statistics computation.
    
               Day | Centre | PRN list
               ----+--------+---------------
                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)
                6  |  SIO   | ALL (high Transformation - See Table 2)

 6. Velocity changes were estimated to alleviate the effects of modeling
    problems, experienced by all centres,in the Long Arc (LA) process.
    
             Velocity changes per day and affected satellites:
    
               Day |  0 |  1 |  2 |  3 |  4 |  5 |  6 |
           --------+----+----+----+----+----+----+----+
           PRN G01 |    |    |    |    |    |  1 |  1 |

 7. Starting on 5-Nov-2006 (GPS Week 1400, day 0, MJD 54044) all IGS products,
    including the IGS combined orbits, are based on the IGS realization of the
    ITRF2005 reference frame (IGS05).   For more information see IGSMAIL #5447.

 8. Small rotations were applied to all the AC orbit and ERP values in order
    to align them to the IGS05 frame. These rotations were estimated in the IGS
    SINEX combination process, performed by the IGS Reference Frame Coordinator
    at the Institut Geographique National (IGN), and are based on the common
    stations between the individual AC SINEX solutions and the IGS05.snx SINEX
    frame. The estimated 7 transformations, from which only the 3 rotations are
    applied to the orbit and ERP values, are:
    
            |    DX     DY     DZ      RX     RY     RZ     SCL
     Centre |   [mm]   [mm]   [mm]   [uas]  [uas]  [uas]   [ppb]
     -------+---------------------------------------------------
       COD  |     .0     .8     .5     -20     -3    -19     .0 
       EMR  |    5.2    -.6    -.2      31     25     -2     .29
       ESA  |    6.3    1.6   -1.3      53    -34    -39     .08
       GFZ  |   -1.0     .9    -.3     -19     30    -95     .32
       GRG  |    3.6    1.1    9.3      16     32      9     .29
       JPL  |    3.4    -.6   -3.1      22    -22     12     .48
       MIT  |    6.7   -4.1     .1       2      9    -27    -.03
       NGS  |   10.0   -6.3   -2.9     -97   -188     47     .18
       SIO  |    3.8     .2  -16.7     -65    338   -725     .25


 9. Starting on 22-Oct-2000 (GPS Week 1085-0; mjd=51839) all IGS clock products
    are based on the new clock combination scheme which uses the clock RINEX
    files as input if available, otherwise SP3 clocks are used. 
    The navigation solution is still based on the SP3 clocks but this will soon
    adopt the clock RINEX files as well.

10. Starting on 27-Feb-2000 (GPS Week 1051-0; MJD 51601) the IGS final products
    are aligned to the IGS reference frame products (station coordinates and
    ERPs as generated by IGN. For more information see IGSMAIL #2750.
    Because of this change in alignment Table 2 has been enhanced with one 
    additional line per AC. This additional line shows the X- and Y-rotations 
    which were applied to each of the AC orbits prior to the orbit combination. 
    These rotations are based on the difference between the individual AC ERP 
    estimates and the IGS reference frame ERP product. The total rotation of
    the individual AC orbits w.r.t. the IGS combined orbit is the sum of the
    values in the two lines of Table 2 plus the reference frame rotation.

11. Starting on 5-Nov-2006 (GPS Week 1400, day 0, MJD 54044) the absolute antenna
    model is introduced (IGSMAIL #5272). The antenna phase center offsets and
    phase center variations are given in the file:
        ftp://igscb.jpl.nasa.gov/pub/station/general/igs05.atx

    
ORBIT COMBINATION AND EVALUATION STATISTICS:                                    
--------------------------------------------                                    
      
Most combination statistics are with respect to the combined orbits and
consist of five parts. The first, Table 1, summarizes all statistics for
the week.  It contains means and standard deviations over the week of
satellite ephemeris and clock correction transformation parameters for
each centre (table 1.1580.a). It also displays the computed satellite
position sigmas for the combined orbits (table 1.1580.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 2.1580.[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 3.1580.[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 5.1580.0-6).

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 1580 summary.                       (Apr 18, 2010 - Apr 24, 2010)

Table 1.1580.a   GPS week: 1580   MJD: 55304.000-55310.000

         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  243|    0     0     0    10   -38   -16  -.21   10    8 |    -414    -413     21     73
        |    0     0     1    18     9    15   .01           |     343     643
emr   87|    0     0     0   -51   -88    17   .40   20   20 |    -901    1106     20     96
        |    1     1     1    19    19    21   .02           |    2579    1481
esa  142|    0     1     0  -113    -9   -20   .27    9    8 |   -1274     856     18    100
        |    0     0     1    15    25    21   .01           |    1724    2541
gfz  195|    0     0     3    24  -114     8  -.09   12   12 |      70     -18     22     96
        |    0     0     1    38    41     5   .04           |     295     456
grg  123|   -1     0    -1   -70   -70    -4   .63   19   17 |     -98      -3     55    211
        |    1     1     2    52    22    12   .05           |     302     616
igr  n/a|    0     0     0     3   -48    14   .01    6    5 |    1269    1098     19     66
        |    0     0     1    25    33    35   .03           |    2800    1671
jpl  117|   -1     1    -3   -54   -15    65   .49   20   20 |     451    1182     20    119
        |    1     0     1    18    12    21   .04           |    2676    1548
mit  269|   -1    -1    -1   -18   -72    12  -.32   12   11 |  -16275     721     26    161
        |    0     0     1    15    22    13   .02           |     565     960
ngs  216|    1    -1     0   202   331    -5  -.23   15    8 |    6310   -2799   2128   3826
        |    0     0     1    27    22    11   .02           |    8349    3322
sio  260|   -2     2     5   145  -732  -692  -.26   22   22 |     ---     ---    ---    ---
        |    1     1     1    32    32    13   .02           |     ---     ---


Table 1.1580.b   GPS week : 1580   MJD: 55304.000-55310.000   

         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  |   14   14   13   16   22   19   23 |
   2  |    6    6    5    5    5    5    7 |
   3  |    5    4    4    4    4    4    5 |
   4  |    6    6    6    6    6    6    9 |
   5  |    5    5    5    5    6    5    5 |
   6  |    5    4    4    4    5    4    4 |
   7  |    5    6    5    5    6    5    6 |
   8  |    7    7    7    7    9    9    9 |
   9  |    7    6    6    6    6    6    7 |
  10  |    4    4    4    4    3    4    4 |
  11  |    5    5    4    4    5    5    5 |
  12  |    5    5    5    5    6    5    6 |
  13  |    5    5    5    4    5    5    5 |
  14  |    6    5    5    5    6    6    5 |
  15  |    6    6    5    5    5    5    6 |
  16  |    6    5    6    6    6    6    6 |
  17  |    6    5    5    5    5    5    5 |
  18  |    5    6    5    7    6    6    6 |
  19  |    6    5    6    6    5    5    6 |
  20  |    6    5    5    6    6    6    6 |
  21  |    5    6    4    5    5    5    5 |
  22  |    5    5    4    5    5    5    5 |
  23  |    6    5    6    5    7    5    5 |
  24  |   10   10    9    9    9   10    9 |
  26  |    4    4    3    4    4    4    4 |
  27  |    6    7    7    7    8    8    6 |
  28  |    6    6    6    5    6    6    6 |
  29  |    5    5    5    5    6    5    5 |
  30  |    4    3    4    4    4    4    4 |
  31  |    4    5    5    5    5    5    5 |
  32  |    6    5    5    5    6    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 2.1580.0   GPS week: 1580   Day: 0   MJD: 55304.000                            

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  243|    0     0     0   -18   -29   -33  -.21    9    9 |     -53   -1301     20     69
        |                     34   -55                       |
emr   87|    2    -3     1   -79   -80    19   .38   20   20 |   -3317     416     25    103
        |                    -55   -22                       |
esa  142|    0     2    -2  -115   -55    -8   .27   10    9 |   -2079   -1158     17    108
        |                     21    45                       |
gfz  195|    0     0     5    93   -52     7  -.09   11   11 |     249    -508     21     95
        |                    -91    11                       |
grg  123|    0     0    -2  -145  -104    -3   .60   21   20 |      45    -668     55    201
        |                    187    20                       |
igr  n/a|    0     0     0    -6   -19    18  -.00    6    6 |   -1152       9     17     62
        |                    -52   -20                       |
jpl  117|   -1     2    -2   -76     3    56   .46   20   19 |   -1824     145     22    120
        |                     17   -35                       |
mit  269|   -1    -1     0    -9   -87     0  -.31   14   13 |  -16710    1274     24    163
        |                     -4    21                       |
ngs  216|    1    -1    -1   165   315     7  -.25   15    8 |   15895   -6817   2233   3494
        |                     72   -80                       |
sio  260|   -3     3     7   140  -750  -698  -.27   22   23 |     ---     ---    ---    ---
        |                   -174   321                       |

Table 2.1580.1   GPS week: 1580   Day: 1   MJD: 55305.000                            

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  243|    0     0     0     8   -27    -8  -.22   10    9 |    -718     168     23     76
        |                     43   -18                       |
emr   87|    1     1     0   -54   -86    -3   .38   20   20 |   -2950     732     26     82
        |                    -47   -12                       |
esa  142|    0     0    -1  -103   -29   -15   .29    9    8 |    -409    -835     22     95
        |                      7    21                       |
gfz  195|    0    -1     3    38  -113     5  -.09   11   11 |    -280     509     21     89
        |                    -95    -8                       |
grg  123|   -2     0    -3   -96   -46   -17   .63   19   18 |     -19     168     58    210
        |                     88  -103                       |
igr  n/a|    0     0     0   -30     0    21  -.01    5    5 |   -1228     715     20     61
        |                    -41   -26                       |
jpl  117|   -1     1    -1   -55   -19    73   .47   20   19 |   -1834     733     22    113
        |                     -7    12                       |
mit  269|   -1    -1    -1   -16   -84     3  -.31   12   11 |  -16141     268     30    139
        |                      6    23                       |
ngs  216|    0     0     0   172   355    -5  -.24   14    7 |   14668   -3014   1813   3596
        |                     56    -8                       |
sio  260|   -4     3     6   142  -725  -698  -.29   22   23 |     ---     ---    ---    ---
        |                   -172   326                       |

Table 2.1580.2   GPS week: 1580   Day: 2   MJD: 55306.000                            

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  243|    0     1     0    34   -39    -4  -.21    9    8 |    -670     186     29     84
        |                    -31   -16                       |
emr   87|    0     0    -1   -36   -93     8   .40   19   19 |   -2582     796     24     86
        |                    -69   -23                       |
esa  142|    0     1     0  -125     0   -23   .28    8    8 |      17    -838     24     96
        |                     27    14                       |
gfz  195|    0     0     5    -7  -179    18  -.05   11   11 |     -48     130     24     91
        |                    -99     0                       |
grg  123|   -2     1    -1   -19   -44    -4   .65   19   17 |    -403     569     55    210
        |                     -5  -137                       |
igr  n/a|    0     0     0    -7   -43    -1   .02    6    5 |    -576     891     22     67
        |                    -62   -21                       |
jpl  117|   -3     0    -3   -25   -31    72   .51   21   21 |   -1234     688     25    120
        |                    -11  -138                       |
mit  269|   -2     0    -2   -42   -70     7  -.31   11   10 |  -16073      82     32    167
        |                      1    17                       |
ngs  216|    1    -2     0   220   345   -15  -.25   13    7 |    -793     299   1960   3803
        |                    -27   -52                       |
sio  260|   -5     3     6    85  -711  -713  -.28   22   23 |     ---     ---    ---    ---
        |                   -165   328                       |

Table 2.1580.3   GPS week: 1580   Day: 3   MJD: 55307.000                            

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  243|    0     0     0   -10   -31    -1  -.19    9    8 |     -43    -785     18     73
        |                     34   -67                       |
emr   87|   -1    -2    -1   -38   -97    18   .39   19   19 |   -2049    2461     15     94
        |                    -70   -10                       |
esa  142|    1     2     0  -121    -3   -36   .28    9    9 |   -3294    4068     15     85
        |                     15   -15                       |
gfz  195|    0     0     6    37  -133    11  -.13   12   12 |     611    -739     23    102
        |                    -79   -36                       |
grg  123|   -2     0     1  -109   -60     7   .58   17   16 |     -13    -117     76    209
        |                    129  -107                       |
igr  n/a|    0     0     0    34   -53   -57   .03    6    5 |      62    2588     19     63
        |                    -44   -38                       |
jpl  117|    0     1    -2   -67   -17    53   .55   20   20 |    -780    2300     20    113
        |                     39    -2                       |
mit  269|   -2     0    -1     1   -91    21  -.32   11   11 |  -16536    1721     24    147
        |                      3    28                       |
ngs  216|    0     0    -1   184   342   -13  -.23   14    8 |     -68    -769   2125   3966
        |                    -55   -56                       |
sio  260|   -2     3     4   167  -753  -692  -.27   21   21 |     ---     ---    ---    ---
        |                   -185   343                       |

Table 2.1580.4   GPS week: 1580   Day: 4   MJD: 55308.000                            

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  243|    0     0     0    24   -48   -37  -.21   10    8 |    -886     264     22     71
        |                     14     3                       |
emr   87|   -1     0    -1   -31  -109    61   .40   21   21 |    -606    3760     22     92
        |                   -114     0                       |
esa  142|    0     1     0  -108     6   -50   .26    9    9 |   -2930    3924     23    118
        |                     31    28                       |
gfz  195|    0     0     2    -2   -87     9  -.10   12   12 |    -171     285     23     97
        |                   -115   -12                       |
grg  123|    0     0     0   -58   -65    -4   .61   17   15 |    -609     698     49    196
        |                      5   -63                       |
igr  n/a|    0     0     0    34   -51    43  -.01    5    5 |    1638    4122     21     68
        |                    -54   -10                       |
jpl  117|    0     1    -3   -70   -26   108   .52   20   20 |     525    4218     20    116
        |                     14     1                       |
mit  269|   -1    -2    -2   -33   -54    38  -.31   12   11 |  -17055    2055     31    159
        |                      5    14                       |
ngs  216|    1     0     3   228   320   -10  -.19   16   10 |   15110   -7994   2147   3924
        |                     97    -3                       |
sio  260|   -1     1     5   143  -714  -669  -.26   21   19 |     ---     ---    ---    ---
        |                   -196   339                       |

Table 2.1580.5   GPS week: 1580   Day: 5   MJD: 55309.000                            

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  243|    0     0     1    20   -46    -3  -.22   10    9 |    -352    -375     17     73
        |                      3    -6                       |
emr   87|   -1     0     0   -76  -103    16   .42   20   20 |    3365    -458     15    105
        |                    -67    -3                       |
esa  142|    0     1    -1   -85    -8   -25   .26    9    8 |    1510   -1687     13     97
        |                     45    34                       |
gfz  195|   -1     0     1   -19   -93     0  -.04   12   12 |      20     287     21     97
        |                    -87     6                       |
grg  123|   -1     0     0   -72   -72   -24   .62   19   16 |      30     274     48    214
        |                      4   -55                       |
igr  n/a|    0     0     2    18  -105    32   .06    6    5 |    5806    -255     19     73
        |                    -22    27                       |
jpl  117|    0     2    -3   -53   -12    46   .46   19   19 |    4793     -36     17    112
        |                    -20   -22                       |
mit  269|   -1    -1    -1   -22   -30     8  -.35   11   10 |  -15289    -512     22    193
        |                      1     8                       |
ngs  216|    2    -1     0   227   292    12  -.25   15    9 |    -353    -410   2096   3895
        |                    -54   -48                       |
sio  260|   -1     0     5   147  -686  -694  -.23   23   21 |     ---     ---    ---    ---
        |                   -179   325                       |

Table 2.1580.6   GPS week: 1580   Day: 6   MJD: 55310.000                            

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  243|   -1     0     3    13   -48   -29  -.22   12    8 |    -182   -1048     18     70
        |                     46   -28                       |
emr   87|    0     0     0   -46   -50     2   .43   22   22 |    1830      40     17    110
        |                    -68   -40                       |
esa  142|    1     1     1  -132    22    15   .26    8    7 |   -1737    2523     14    103
        |                     32    26                       |
gfz  195|    0     0     1    33  -144     4  -.15   11   11 |     111     -92     21    101
        |                    -79    15                       |
grg  123|    0     3    -4     7   -95    12   .72   21   19 |     281    -951     48    239
        |                    -95   -40                       |
igr  n/a|    0     0     0   -19   -65    45  -.01    6    6 |    4333    -383     21     74
        |                    -63    13                       |
jpl  117|   -2     1    -5   -35    -5    48   .43   21   20 |    3512     229     20    140
        |                     20     1                       |
mit  269|    0    -1    -2    -2   -89     6  -.34   14   13 |  -16124     161     19    162
        |                     -3    20                       |
ngs  216|    1     0     0   217   349   -16  -.23   15    9 |    -289    -889   2528   4109
        |                    -54  -110                       |
sio  260|    0     1     4   190  -782  -683  -.23   21   20 |     ---     ---    ---    ---
        |                   -181   333                       |

       
       
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 3.1580.0   GPS week: 1580   Day: 0   MJD: 55304.000                            

        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  ---  ---  ---  ---   21  ---   20   24  ---   13 |    49  ---  ---  ---  ---   40  ---   53   23  ---    48
   2E |    7   25   11   10   26    4   21   19    8   17    5 |    20   33   20   19   25   19   29   26   20   24    20
   3  |    7   16    9   10   17    8   12   12   13   15    4 |    11   22   21   20   21   12   15   14   20   16    14
   4E |   11   17    8   12   21    4   15   18   23   26    6 |    49   49   47   48   42   48   46   44   54   46    46
   5  |    8   20    7   11   22    5   22   14    8   17    5 |    15   28   18   18   27   16   30   16   19   19    16
   6  |    7   14   10   10   16    5   15   11   14   18    4 |    15   21   24   21   22   15   18   17   22   24    17
   7E |    8   25    7   11   24    3   20   11    9   13    5 |    23   32   23   25   26   21   30   21   29   22    23
   8E |   17   19    8   19   18    7   17   16   25   17    7 |    28   34   31   42   34   31   35   31   46   31    33
  X9E |    8   20   11  ---   21    6   17   19   15   19    6 |    15   29   20  ---   26   16   29   19   24   20    15
  10  |    7   14    7    9   15    4   11   11    8   19    3 |    14   16   18   14   21   12   15   18   20   16    14
  11  |    6   20    8   11   26    5   16   11    8   18    4 |    17   29   26   18   42   19   29   17   23   14    20
  12  |   10   23   11   11   22    8   22   10    7   31    5 |    18   31   24   24   30   22   31   19   18   20    20
  13  |    8   19    8    9   27    5   24   14   12   17    5 |    23   29   25   25   37   23   31   29   31   24    24
  14  |   11   21    9   15   19    6   22    9   13   24    5 |    16   24   20   25   30   17   26   17   17   20    16
  15  |    9   20    8    9   21    5   26   12    9   16    5 |    17   27   21   19   32   17   25   19   18   22    16
  16  |   10   19    9   11   19    4   24   20   11   27    6 |    16   26   20   21   23   16   28   20   19   24    17
  17  |    8   22   11   10   21    6   21   15    9   31    5 |    24   30   21   24   20   22   31   23   23   24    21
  18  |    8   22   10   11   19    4   23   12    8   20    5 |    19   33   22   20   29   19   31   19   19   25    19
  19  |    8   25   11   11   16    8   25   10    9   26    5 |    19   37   15   18   23   19   36   22   22   20    19
  20  |    9   22    9   12   19    4   26   13   11   23    5 |    14   28   23   23   28   16   29   19   18   17    16
  21E |    9   19    9    9   24    6   18   10   14   15    5 |    14   27   16   11   29   11   25   16   20   20    13
  22  |    8   23    9   10   24    6   21   11   12   23    5 |    17   29   21   21   32   17   26   20   17   27    17
  23  |    9   23   10   11   31    4   26   14   11   23    5 |    17   30   22   20   35   17   30   17   18   17    18
  24E |   16   22   17   18   25   10   21   16   47   21    9 |    33   35   32   39   36   35   31   38   66   33    33
  26  |    6   16    7   11   15    5   12   14    5   28    4 |    10   19   14    9   21   11   18   13   16   28    11
  27E |    9   19   12    8   18    4   15   15   27   17    6 |    54   63   54   54   55   55   58   55   58   54    54
  28  |    7   24   10   13   18    4   24   17    9   30    5 |    18   30   24   27   27   20   28   27   23   23    20
  29  |   14   19    9   10   15    5   18   12   10  ---    5 |    21   32   20   16   21   19   34   21   23  ---    18
  30  |    5   14    8    8   18    4    9   10   10   21    3 |    25   23   29   29   32   25   25   25   30   24    27
  31E |    5   16   10    9   27    6   19   10    8   21    4 |     9   20   13   13   27    7   19   10   16   14    11
  32  |   10   22    7    8   23    6   18   19   12   23    5 |    15   22   22   21   28   18   22   23   22   13    19
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |    9   20   10   11   21    6   20   14   15   22      |T   21   29   23   23   29   21   28   23   25   23    21
 WRMS |    9   20    9   11   20    6   19   13    8   23      |NE  18   26   21   20   27   18   26   21   20   20    19
 MEDI |    8   20    9   11   21    5   20   13   11   21      |MD  17   29   21   21   28   19   29   20   22   22    19

Table 3.1580.1   GPS week: 1580   Day: 1   MJD: 55305.000                            

        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  ---  ---  ---  ---   31  ---   18   24  ---   14 |    44  ---  ---  ---  ---   41  ---   42   35  ---    40
   2E |    9   23    9   12   21    5   21   16   10   17    5 |    14   30   19   16   20   16   25   23   22   23    17
   3  |    8   13    6    8   16    5   13    8    4   14    3 |    11   18   17   13   15   14   15   12   22   12    13
   4E |   13   17    6   10   16    6   12   17   22   25    6 |    36   36   34   38   32   34   33   32   48   32    34
   5  |   11   20    6   14   19    7   22    9   11   16    5 |    12   26   14   19   25   12   26   14   20   15    13
   6  |    8   13    7    7   15    4   15   10    5   15    3 |    14   18   16   13   14   14   13   15   24   18    14
   7E |    9   28    9   11   27    4   21    9   10   17    5 |    16   29   19   18   24   15   24   17   22   19    16
   8E |   17   22    7   16   17    7   19   12   25   20    7 |    17   25   14   18   16   18   23   14   35   16    15
  X9E |    8   19    8  ---   17    5   18   18   13   19    6 |    14   27   20  ---   23   15   28   19   30   15    17
  10  |    8   13    7    9   18    4   12   10   10   15    4 |    19   25   20   25   24   21   19   24   22   26    19
  11  |   10   14    8   11   19    4   16   11   10   16    4 |    17   24   25   18   37   18   28   16   29   13    20
  12  |    9   21    9    9   18    4   22   10   11   32    5 |    14   26   20   21   26   17   29   14   19   15    17
  13  |    9   18    9    8   24    4   25   11   10   19    5 |    18   27   22   18   38   18   30   19   28   17    19
  14  |    7   21    9   12   13    4   23   10    9   24    5 |    15   25   18   19   26   15   27   17   22   17    16
  15  |   12   24    9   14   25    6   24    8   14   17    6 |    14   27   16   20   30   15   25   16   28   21    14
  16  |    8   20    9   10   16    5   23   16    8   25    5 |    15   22   15   15   17   15   25   14   24   18    15
  17  |    8   20    8   11   15    4   21   14    7   31    5 |    20   25   13   23   15   16   24   20   22   21    16
  18  |    6   22   10   14   17    4   25   10   11   22    5 |    19   33   26   24   31   19   32   21   27   26    23
  19  |    9   22   10   10   16    6   26    9    6   28    5 |    15   27   16   15   18   17   29   17   24   12    16
  20  |    9   25    7    8   18    4   23   13    9   21    5 |    12   27   19   18   28   13   26   15   23   13    14
  21E |   12   15   23   10   23    7   16    9   12   17    6 |    16   22   28   12   31   10   23   13   22   15    14
  22  |    6   17    8    9   23    5   22   11    9   26    4 |    16   26   18   19   29   15   25   19   25   24    18
  23  |    9   21    8    7   24    4   26   12    7   24    5 |    19   31   22   18   36   19   30   20   24   21    19
  24E |   18   21   15   16   20    6   20   13   44   23    9 |    34   34   32   35   32   34   32   33   62   33    32
  26  |    6   15    6   12   17    3   13   11    8   29    4 |    11   20   14   12   22   11   20   13   23   26    13
  27E |   11   21   11   15   21    4   18   16   24   19    6 |    47   50   48   48   45   47   51   55   56   50    48
  28  |    9   25    9   13   19    5   25   12   12   31    5 |    13   28   17   21   23   14   24   20   23   19    15
  29  |    9   16    9    9   18    5   22   11    7  ---    4 |    12   27   20   15   23   14   29   14   22  ---    15
  30  |    5   14    6    7   11    3   11    8    7   19    3 |    22   23   23   21   23   22   23   24   30   22    23
  31E |    6   19    8    9   26    5   20   11    8   22    4 |    13   23   13   13   22   11   22   14   21   13    13
  32  |   13   17    6    9   17    4   16   13    8   19    4 |    18   25   25   27   21   21   23   30   19   27    20
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |   10   20    9   11   19    5   20   12   14   22      |T   18   26   20   20   25   18   26   20   27   20    19
 WRMS |    9   20    8   11   18    5   19   11    7   23      |NE  16   25   18   18   24   17   24   18   24   19    17
 MEDI |    9   20    8   10   18    5   21   11   10   20      |MD  16   26   19   18   24   16   25   17   24   19    16

Table 3.1580.2   GPS week: 1580   Day: 2   MJD: 55306.000                            

        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  |   10  ---  ---  ---  ---   27  ---   15  ---   34   12 |    40  ---  ---  ---  ---   42  ---   39  ---   53    40
   2E |    7   21    8   10   27    6   25   11    7   18    5 |    22   32   21   23   33   21   33   24   27   24    22
   3  |    7   13    5   12   21    4   13    7    9   15    3 |    11   18   16   18   19   13   17   13   24   13    15
   4E |   11   18   10   11   19    5   14   15   20   26    5 |    31   32   27   27   32   30   32   26   40   24    28
   5  |   10   15    7   10   19    6   25   10    8   19    4 |    16   26   19   18   25   16   30   16   29   20    19
   6  |    7   15    6    9   19    4   13    8   11   15    4 |    14   19   18   16   19   14   17   16   26   18    17
   7E |    7   22   11    9   22    4   27    7   12   22    5 |    23   33   30   23   26   24   37   24   31   24    25
   8E |   16   23    8   17   18    8   18   12   24   24    7 |    28   34   32   35   30   31   37   30   45   31    30
  X9E |    7   21    9  ---   19    6   17   14   11   19    5 |    15   27   18  ---   24   17   28   18   30   17    17
  10  |    9   12    7    7   19    5   11   13    7   16    4 |    29   31   29   27   29   28   30   36   39   28    31
  11  |    6   11    7   10   19    7   19    8    7   17    3 |    14   23   23   17   35   16   24   15   21   13    18
  12  |    9   20    9   12   17    5   23   11    7   30    5 |    17   26   21   21   28   17   28   19   18   17    18
 X13  |    7   20    6    7   20    7  ---   12   10   20    4 |    14   30   23   20   38   18  ---   18   22   14    18
  14  |    8   21    9   11   15    5   23   10    5   22    5 |    16   26   21   19   26   16   28   16   21   20    18
  15  |    8   21    8   10   23    5   25   14    6   17    5 |    14   25   18   15   31   14   26   17   22   20    14
  16  |    9   24    7    9   20    7   23   17    7   25    5 |    16   26   19   17   17   15   23   17   27   18    18
  17  |    9   18   10    9   13    3   19   10    6   30    4 |    17   25   18   18   17   16   29   18   21   20    15
  18  |    8   18    9    8   16    5   24    8    8   20    4 |    16   27   23   19   30   16   32   18   27   23    20
  19  |    8   23   10   13   16    9   28    9    8   27    5 |    17   32   15   16   18   16   34   20   26   15    19
  20  |    8   20    8   10   18    5   25   12   10   21    5 |    12   24   18   21   28   14   30   16   18   13    15
  21E |    9   18    7    8   13    5   18    6    8   13    4 |    19   28   25   13   30   17   32   18   27   19    21
  22  |    8   16    9    8   24    4   20    7    8   20    4 |    17   26   23   20   34   16   26   19   22   25    20
  23  |    9   20    6   10   17    4   32   12    6   23    5 |    15   27   18   16   28   14   32   17   17   15    14
  24E |   19   17   11   23   19    9   21   15   40   23    9 |    32   34   30   37   29   33   29   32   53   30    29
  26  |    6   13    4    7   16    4   12   10    6   27    3 |    12   16   17   12   22   13   20   13   22   25    15
  27E |   10   19   10   19   20    7   16   13   24   20    6 |    35   37   31   28   34   31   38   38   46   40    34
  28  |    8   28    7   13   19    5   22   10    9   33    5 |    15   36   21   24   25   17   28   21   26   21    19
  29  |    9   16    6    9   21    6   23   11   12  ---    4 |    13   27   20   14   21   17   32   17   25  ---    17
  30  |    7   12    7    8   12    6   15    7    7   19    3 |    15   18   23   25   25   20   19   17   21   17    18
  31E |    6   17    7   13   22    6   22    8    7   20    4 |    10   22   15   14   20   11   21   13   22   16    13
  32  |   10   18   11   10   14    4   21    9   10   21    5 |    15   20   19   17   21   15   21   20   24   17    17
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |    9   19    8   11   19    6   21   11   13   22      |T   18   26   21   20   26   19   28   20   27   21    20
 WRMS |    8   19    8   11   17    5   21   10    7   23      |NE  16   25   20   18   25   17   26   19   23   20    18
 MEDI |    8   18    8   10   19    5   21   10    8   20      |MD  16   26   21   19   26   16   29   18   25   20    18

Table 3.1580.3   GPS week: 1580   Day: 3   MJD: 55307.000                            

        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  ---  ---  ---  ---   20  ---   17  ---   34   15 |    64  ---  ---  ---  ---   63  ---   61  ---   54    64
   2E |    6   21   10   13   18    4   21   10    8   18    5 |    19   28   16   19   25   18   27   23   25   23    19
   3  |    8   15    9   14   16    5   13    7   11   12    4 |    12   20   17   21   19   14   16   16   18   15    15
   4E |   11   19   11   18   16    5   13   14   20   26    6 |    36   39   36   40   36   38   39   39   45   37    37
   5  |    6   18    9   12   17    4   22   14    6   25    5 |    13   27   17   15   23   13   28   18   17   18    15
   6  |    8   14    9   11   15    5   12   10    8   13    4 |    15   17   17   21   19   15   14   19   18   20    16
   7E |    7   19   12   10   18    5   22    9   11   18    5 |    16   27   23   16   24   19   28   17   22   19    18
   8E |   15   22   10   17   18    6   18   12   30   24    7 |    26   31   25   31   33   23   30   28   40   29    25
  X9E |    6   19    8  ---   21    6   19   13   12   19    5 |    16   28   24  ---   27   20   32   21   27   24    20
  10  |    5   12    7   10   13    5   11    6    9   14    3 |    30   32   29   31   33   30   33   34   38   34    32
  11  |    7   23    6    9   19    5   16    8    6   16    4 |    18   34   24   18   35   22   27   19   22   19    21
  12  |    9   20    8   12   16    3   23   10    8   27    5 |    20   28   22   25   29   20   28   23   21   19    21
 X13  |    8   20    7    7   24    5  ---    9    7   18    4 |    20   30   19   20   37   18  ---   18   19   19    17
  14  |    8   19    9   13   13    4   22    8   10   19    5 |    17   28   22   22   27   17   29   18   23   20    19
  15  |   10   23    8   10   22    4   23    9   10   15    5 |    12   28   17   15   28   14   27   18   19   18    14
  16  |   10   22    7   19   17    8   24   16    8   24    6 |    18   27   20   30   19   20   29   21   22   21    20
  17  |    9   16   11   10   13    4   20    9   12   33    5 |    18   23   15   15   14   15   25   17   20   23    14
 X18  |    8   25  ---   12   22   10  ---   11   12   20    6 |    23   38  ---   28   36   22  ---   27   26   29    26
  19  |    6   24   12   14   16   13   24    8   10   26    5 |    23   33   18   16   21   26   36   24   27   21    22
  20  |    7   24   14   12   18    5   24   15    8   19    5 |    13   28   24   18   28   14   27   17   13   17    14
  21E |   11   19    9    9   20    4   19    9   10   12    4 |    15   29   20   18   24   15   26   17   20   18    17
  22  |    6   18    8    8   20    5   21   12    9   16    4 |    19   28   24   22   26   17   27   21   21   22    20
  23  |    9   18    8   11   18    4   28    8    8   21    5 |    19   30   24   24   29   22   31   19   21   20    20
  24E |   19   22   13   18   18    8   17   19   39   22    9 |    49   51   45   54   48   50   48   48   63   46    47
  26  |    6   13    7   10   15    3   10   12    6   27    3 |    11   17   17   10   22   11   19   14   20   25    13
  27E |    9   20   12   18   23    6   18   13   24   20    6 |    56   60   60   59   59   57   63   59   60   60    58
  28  |    6   25   10    7   15    5   24    9   11   33    5 |    15   28   24   21   24   16   28   20   21   20    17
  29  |   10   18    7    9   21    4   20   11   13  ---    5 |    14   29   20   15   19   17   30   18   26  ---    18
  30  |    7   14    5    9   11    4   12    6    6   15    3 |    22   22   29   28   31   22   22   27   31   22    26
  31E |    6   19    7    9   22    5   19   11   10   19    4 |    13   26   17   17   22   12   23   14   23   17    16
  32  |    8   19    6   10   16    6   16   14    9   19    4 |    14   20   17   18   21   13   18   21   17   16    14
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |    9   19    9   12   17    6   20   11   14   21      |T   21   29   23   23   27   22   28   24   26   24    23
 WRMS |    8   19    9   12   16    5   20   11    8   21      |NE  19   27   20   20   25   20   26   22   21   22    20
 MEDI |    8   19    9   11   18    5   19   10   10   19      |MD  18   28   22   21   26   18   28   20   22   20    19

Table 3.1580.4   GPS week: 1580   Day: 4   MJD: 55308.000                            

        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  |   30  ---  ---  ---  ---   40  ---   24   35   41   21 |    65  ---  ---  ---  ---   81  ---   82   33   64    73
   2E |    7   27    8    9   17    4   19   11   10   18    5 |    22   39   24   22   30   22   31   27   31   29    23
   3  |    8   12    8    8   13    4   11   10   12   11    4 |    11   18   20   16   17   13   15   14   27   14    14
   4E |   11   18    9   13   16    4   16   15   21   24    6 |    36   42   37   38   36   38   37   39   44   39    36
   5  |    8   17    8   11   21    5   23   17   11   24    5 |    12   26   14   17   26   12   27   20   27   18    14
   6  |    8   13   10   10   13    5   14   12   13   12    4 |    17   19   24   21   19   18   15   20   27   22    18
   7E |    7   24   12   10   21    5   26    8   10   16    5 |    16   29   24   21   34   17   26   17   28   18    17
   8E |   22   23   10   18   23    8   18   16   35   20    8 |    41   50   46   48   49   43   47   48   57   47    44
  X9E |    8   18    8  ---   18    8   20   13   14   17    5 |    15   28   17  ---   25   18   30   19   32   21    16
  10  |    6   11    5    8   15    4   12    8    9   17    3 |    19   25   19   23   22   20   19   23   22   19    18
  11  |    8   21    6   11   19    5   20   10    9   18    4 |    19   30   26   18   35   20   30   22   31   16    21
  12  |   10   23   10   13   14    5   23   10   10   27    5 |    16   32   18   28   27   22   29   19   22   17    18
  13  |    8   22    7    9   19    7   27   10   10   18    5 |    17   34   18   19   36   20   36   19   27   17    18
  14  |   10   23   10   16   13    5   29   10   13   18    6 |    15   27   21   22   26   17   30   20   27   20    17
  15  |    8   18   10    7   19    6   24    9    9   16    4 |    14   26   20   17   30   15   28   21   23   19    16
  16  |    9   22    8    9   13    3   24   14   12   22    5 |    14   23   15   19   21   16   28   18   20   20    14
  17  |    7   19    9   12   14    4   20    8   11   38    4 |    20   27   17   19   19   18   26   21   30   31    17
  18  |    9   24   11    9   19    6   23   12   14   19    5 |    16   32   25   21   28   18   33   17   24   19    16
  19  |    9   17    8   11   13    6   22   10   12   24    5 |    17   29   16   17   16   18   31   19   29   15    17
  20  |    7   29   11   10   20    7   24   13   11   18    6 |    12   28   24   20   28   13   26   19   26   14    15
  21E |   11   18   11    9   14    4   19   11   14   15    5 |    20   26   18   13   23   12   25   16   23   14    15
  22  |    8   18    9   10   23    5   20   11   13   16    5 |    17   28   22   23   31   16   28   20   24   21    19
 X23  |   10   27  ---   11   24    8  ---    9   10   21    6 |    17   34  ---   22   36   18  ---   18   25   15    19
  24E |   17   20   15   19   22    6   15   20   39   25    8 |    53   51   47   61   52   49   50   54   70   47    52
  26  |    6   15    7   14   15    5   13   10    7   27    4 |    10   20   15   15   22   13   19   13   25   25    12
  27E |   14   20   12   26   17    6   18   12   30   19    7 |    33   44   33   48   34   36   38   35   47   39    34
  28  |    6   25   10   11   15    5   25    8   10   30    5 |    16   30   23   24   27   19   27   20   28   16    18
  29  |   12   22   10    8   19    3   20   12   12  ---    5 |    12   30   22   18   22   16   30   18   25  ---    17
  30  |    6   17    5   10   10    5   11    9    8   15    3 |    26   24   24   24   26   23   22   25   35   23    24
  31E |    7   21    6    9   24    4   21    7   11   22    4 |    13   25   14   21   26   14   25   19   22   23    14
  32  |    8   27    6   13   14    6   20   13   12   20    5 |    13   20   19   21   22   15   18   22   27   17    15
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |   10   21    9   12   17    5   20   12   16   21      |T   20   29   22   24   28   22   28   24   30   23    21
 WRMS |    8   21    9   12   15    5   20   11   10   19      |NE  17   26   20   20   25   20   25   22   26   21    19
 MEDI |    8   20    9   10   17    5   20   11   12   19      |MD  17   28   21   21   26   18   28   20   27   19    17

Table 3.1580.5   GPS week: 1580   Day: 5   MJD: 55309.000                            

        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  |   17  ---  ---  ---  ---   62  ---   22  ---   43   19 |   100  ---  ---  ---  ---   92  ---  101  ---   81   100
   2E |    7   26    9   10   20    5   19   11    7   18    5 |    17   33   18   20   24   17   24   22   16   25    17
   3  |    6   16    8    7   17    4   10    8    8   13    3 |    11   18   17   13   18   14   13   12   14   14    11
   4E |   11   18   11   12   20    7   13   17   20   24    6 |    31   32   29   32   27   30   30   29   35   28    28
   5  |    8   18    9    9   17    4   22   16    9   22    5 |    12   26   14   15   25   13   24   18   16   16    13
   6  |    7   17    7    8   14    5   13   11   10   15    4 |    12   18   16   16   18   13   12   16   15   22    12
   7E |    7   20   10   11   18    7   21    8   10   14    5 |    15   26   23   19   30   19   25   19   21   14    18
   8E |   19   25    8   22   23   12   16   14   36   22    8 |    30   36   29   27   30   28   31   28   46   25    27
  X9E |    8   20    8  ---   19   11   19   13   17   21    6 |    16   27   21  ---   27   19   30   19   24   21    16
  10  |    4   14    6    7   13    5   10    7   13   17    3 |    24   30   24   23   27   26   25   27   27   25    23
  11  |    9   18    7    8   22    4   15   12    9   20    4 |    16   29   25   18   39   19   28   23   21   16    19
  12  |   12   21    7    8   16    5   21   12    9   30    5 |    16   29   20   21   27   19   28   20   18   18    17
  13  |    6   20    9   12   35    5   26    8    7   19    5 |    19   30   23   21   47   23   34   20   21   16    19
  14  |   11   24    8   11   13    5   21   10   11   22    5 |    16   30   21   20   27   17   27   19   19   17    17
  15  |    8   18    6    9   20    6   25   11   16   18    5 |    15   26   15   20   28   15   27   21   19   16    14
  16  |   10   21    8   10   15    4   23   15   10   21    5 |    14   21   13   16   20   14   25   16   17   16    12
  17  |    7   18    9   12   10    4   21    8    9   37    4 |    16   22   14   18   15   14   24   18   18   29    14
  18  |    9   23    9   12   18    4   24   11   11   18    5 |    20   34   22   27   34   24   30   25   22   24    23
  19  |    7   20   11    9   15    6   25   10    9   26    5 |    17   26   19   14   16   17   28   21   19   18    16
  20  |   12   22   13   11   19    4   23   15    7   20    6 |    13   26   23   20   28   17   27   22   19   15    16
  21E |   11   20    8   10   14    6   17    8   12   17    5 |    16   27   17   13   23   12   23   16   15   15    14
  22  |    8   21    9    7   23    3   21   10   13   18    5 |    15   29   19   20   31   16   26   17   17   19    16
 X23  |    8   25    8   11   22    7  ---   12    7   22    5 |    22   29   25   21   32   23  ---   20   22   18    19
  24E |   21   26   16   22   23    9   18   17   41   43    9 |    64   65   60   66   65   59   61   61   73   63    60
  26  |    8   13    4    8   12    6   11    9    9   25    3 |     9   19   14   16   20   13   19   12   16   26    11
  27E |   13   20    9   22   17    8   17   14   30   19    7 |    48   51   49   47   49   47   53   50   52   48    47
  28  |    6   27   10   12   15    5   23    8    6   32    5 |    17   30   24   22   26   19   28   19   19   14    18
  29  |   10   17    8   11   17    7   23   11   11  ---    5 |    16   27   18   12   22   18   31   16   16  ---    15
  30  |    9   12    6    7   13    4   11    8   11   17    3 |    20   23   21   23   23   19   21   22   24   20    19
  31E |    5   12    6   10   26   10   21    9   14   20    4 |    13   18   16   15   23   19   21   13   21   18    14
  32  |    7   21    6   12   17    3   16    8    9   23    4 |    15   20   13   16   17   14   18   18   15   15    12
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |   10   20    9   12   19    6   19   11   15   23      |T   22   28   22   21   27   22   27   24   23   23    21
 WRMS |    9   20    8   12   16    5   19   10    9   21      |NE  19   25   19   18   25   20   24   22   18   21    19
 MEDI |    8   20    8   10   17    5   21   11   10   20      |MD  16   27   20   20   27   19   27   20   19   18    17

Table 3.1580.6   GPS week: 1580   Day: 6   MJD: 55310.000                            

        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  ---  ---  ---  ---   30  ---   26  ---   38   22 |   117  ---  ---  ---  ---  123  ---  118  ---   78   115
   2E |   16   28    9   11   19    4   21   16   16   18    6 |    34   47   39   35   43   35   44   34   44   37    37
   3  |    9   18    8   11   21    6   10   14   11   13    4 |    13   23   18   23   20   16   15   17   15   18    17
   4E |   33   23   14   11   20    9   19   19   20   24    8 |    55   59   55   56   56   53   58   54   58   51    55
   5  |    6   22    7   11   20    7   23   14    8   18    5 |    13   29   15   16   23   16   28   17   16   15    14
   6  |    8   16    7   10   20    5   10   13   12   16    4 |    18   21   22   23   21   17   17   20   18   26    19
   7E |    9   29    9   13   26    6   23   13   11   15    6 |    12   31   18   17   29   11   24   16   17   14    14
   8E |   21   21    9   23   27    7   21   19   36   25    9 |    25   30   21   32   30   24   29   31   48   29    25
  X9E |    8   20    7  ---   22    9   19   21   15   26    6 |    24   32   24  ---   29   23   35   28   28   29    24
  10  |    5   18    5    7   16    3   14   12   10   16    4 |    21   26   23   21   24   20   30   24   26   22    24
  11  |    8   20    7    8   22    5   19   16   14   18    5 |    20   32   26   18   40   21   31   26   23   19    22
  12  |   12   26    6    7   16    7   24   15    9   31    5 |    23   29   24   24   29   22   29   26   23   23    23
  13  |    7   21    6    9   23    6   26   10    9   20    5 |    22   35   26   21   43   20   36   28   23   18    24
  14  |    9   22    6   13   15    6   23   14   10   24    5 |    24   35   31   33   35   29   36   31   31   32    29
  15  |    6   22    9    7   18    6   27   15   11   18    5 |    18   31   25   24   29   22   30   25   22   21    20
  16  |   10   23    8   11   16    5   24   17    8   21    5 |    19   26   18   24   21   18   29   21   20   20    19
  17  |    9   18    8   11   19    5   20    8   10   32    4 |    26   30   22   23   29   24   34   24   27   29    24
  18  |    8   27    7   11   22    5   25   13   11   19    5 |    23   40   26   25   35   24   35   25   25   20    26
  19  |    7   24   11    9   20    9   24   12   13   24    5 |    27   40   24   21   27   26   38   29   30   26    27
  20  |   10   29    8   11   23    5   22   15   12   18    6 |    14   29   26   23   30   16   22   26   22   15    19
  21E |   10   20    7    7   24    6   21    9   16   16    5 |    18   29   19   14   27   16   29   18   17   18    17
  22  |    7   21    6    8   25    5   23   12   10   18    4 |    19   31   26   23   38   19   29   25   23   20    22
  23  |    7   22    7   10   16    4   27   10    8   22    5 |    19   30   20   20   30   17   28   23   20   17    18
  24E |   20   25   11   17   25   10   19   20   33   21    8 |    52   47   46   60   49   47   51   55   64   55    50
  26  |    9   15    6    8   15    6   11   13   10   25    4 |    15   21   19   16   21   16   22   16   19   28    16
  27E |    9   17    9   11   23    7   18   17   27   21    6 |    52   52   50   52   57   49   53   52   55   52    50
  28  |    9   29   10   10   20    4   29   12   13   30    6 |    19   33   26   24   30   19   31   24   24   20    19
  29  |    7   17    7    8   22    6   21   13   14  ---    4 |    16   29   20   16   21   17   33   21   21  ---    19
  30  |    7   17    5    7   11    4   16    6   14   16    4 |    31   26   32   35   33   31   25   31   35   30    31
  31E |    6   16    9    7   32    5   21   13   10   16    4 |    25   30   27   26   36   25   27   28   28   28    26
  32  |    8   20    4   19   13    6   17   11   12   27    5 |    16   18   18   24   22   16   17   22   21   18    17
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |   12   22    8   11   21    6   21   14   15   21      |T   26   32   26   26   31   26   31   30   28   27    27
 WRMS |    8   22    7   11   19    6   20   13    9   20      |NE  24   29   23   22   28   24   28   28   23   24    25
 MEDI |    9   21    7   10   20    6   21   13   11   20      |MD  21   30   24   23   29   21   29   25   23   22    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 4.1580   GPS week: 1580   MJD: 55304.0-55310.0

CENT| CLK EPO  |        BRUS       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 2955 |U    7     7    19 |U   48    48   204 |U    9     8    19 |
emr | emr 2854 |    10    10    31 |U   34    47   167 |    11     9    25 |
esa | esa 2852 |     7     7    24 |U   41    48   212 |    10     9    20 |
gfz | gfz 2763 |U    8     7    22 |U   47    49   197 |U    9     7    19 |
grg | grg 2880 |    10     8    27 |U   13    15    69 |     9     8    25 |
igr | igr 2876 |     8     7    26 |    16    50   206 |     9     8    19 |
igs | igs 2880 |     7     7    22 |    48    49   199 |    10     9    20 |
jpl | jpl 2786 |U    9     8    27 |    45    56   203 |U   10     8    24 |
mit | mit 2976 |U    8     7    29 |U   44    43   222 |U    9     8    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 5.1580.0   GPS week: 1580   Day: 0   MJD: 55304.0

CENT| CLK EPO  |        BRUS       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 2958 |     8     6    18 |    13    13    35 |     9     9    21 |
emr | emr 2860 |    10     9    31 |    15    12    36 |    10     7    20 |
esa | esa 2880 |     7     6    24 |    13    11    34 |    10     9    20 |
gfz | gfz 2768 |     7     7    18 |    14    11    36 |     8     8    20 |
grg | grg 2880 |     9     8    27 |    12    13    36 |     9     7    24 |
igr | igr 2896 |     7     6    24 |    12    11    34 |     9     8    17 |
igs | igs 2872 |     8     6    23 |    13    13    39 |    10    10    23 |
jpl | jpl 2859 |     7     7    27 |    14    10    35 |     9     8    20 |
mit | mit 2976 |     8     7    26 |    13    10    39 |     9     9    21 |

Table 5.1580.1   GPS week: 1580   Day: 1   MJD: 55305.0

CENT| CLK EPO  |        BRUS       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 2962 |     6     4    21 |     6    12    24 |    11    11    25 |
emr | emr 2860 |     8     6    27 |     8    13    25 |    12     8    20 |
esa | esa 2880 |     6     5    31 |     5    11    19 |    13    12    23 |
gfz | gfz 2768 |     6     5    22 |     5    13    19 |    12    11    23 |
grg | grg 2880 |    13     8    35 |  ----  ----  ---- |  ----  ----  ---- |
igr | igr 2878 |     6     4    27 |     5    12    20 |    12    11    21 |
igs | igs 2877 |     5     4    25 |     5    11    19 |    13    12    23 |
jpl | jpl 2858 |     7     7    28 |     6    13    21 |    13    10    24 |
mit | mit 2976 |     7     6    38 |     5     9    19 |    11     9    24 |

Table 5.1580.2   GPS week: 1580   Day: 2   MJD: 55306.0

CENT| CLK EPO  |        BRUS       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 2952 |     8     9    17 |     7     9    26 |     8     6    19 |
emr | emr 2851 |    14     9    39 |     7     8    32 |    11     7    30 |
esa | esa 2880 |     8     8    22 |     5     8    24 |    10     6    22 |
gfz | gfz 2760 |    12     7    23 |     6     8    24 |     7     5    23 |
grg | grg 2880 |    15     9    31 |    31    24   193 |    10     8    30 |
igr | igr 2879 |     8     9    25 |     5     7    23 |    10     6    22 |
igs | igs 2897 |     9     8    18 |     6     8    25 |    10     7    23 |
jpl | jpl 2762 |    15     9    41 |     7    11    29 |     8     4    23 |
mit | mit 2976 |     9     8    21 |     6     9    28 |    10     7    23 |

Table 5.1580.3   GPS week: 1580   Day: 3   MJD: 55307.0

CENT| CLK EPO  |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+
cod | cod 2961 |     6     7    31 |    10     9    15 |
emr | emr 2849 |     5     8    30 |    11     9    23 |
esa | esa 2784 |     5     8    28 |    10     7    15 |
gfz | gfz 2757 |     5     9    28 |    10     8    15 |
grg | grg 2880 |     7    10    41 |     9     6    21 |
igr | igr 2895 |     5     9    27 |     9     8    15 |
igs | igs 2911 |     5     8    27 |    10     8    16 |
jpl | jpl 2668 |     6     8    24 |     7     6    20 |
mit | mit 2976 |     6     7    22 |     9     7    17 |

Table 5.1580.4   GPS week: 1580   Day: 4   MJD: 55308.0

CENT| CLK EPO  |        BRUS       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 2933 |     6     6    17 |   291   270  1249 |     8     8    19 |
emr | emr 2844 |     8     8    21 |   187   259   978 |    12     8    26 |
esa | esa 2784 |     7     4    22 |   244   270  1315 |     8    10    23 |
gfz | gfz 2751 |     7     7    25 |   289   272  1205 |     8     7    21 |
grg | grg 2880 |     7     5    17 |  ----  ----  ---- |     9    11    33 |
igr | igr 2838 |     8     6    22 |    74   284  1276 |     9     7    21 |
igs | igs 2856 |     8     5    19 |   292   278  1218 |     9     6    20 |
jpl | jpl 2751 |     8     6    19 |   267   321  1235 |     9     9    21 |
mit | mit 2976 |     7     5    34 |   265   243  1380 |     9     7    26 |

Table 5.1580.5   GPS week: 1580   Day: 5   MJD: 55309.0

CENT| CLK EPO  |        BRUS       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 2955 |     7    10    21 |     6    12    33 |     8     9    15 |
emr | emr 2860 |     8    11    34 |     9    16    30 |    14    12    29 |
esa | esa 2880 |     7     9    22 |     7    13    34 |     9     7    17 |
gfz | gfz 2768 |     6     7    22 |     7    14    34 |     8     6    16 |
grg | grg 2880 |     8    11    28 |     8    15    38 |    10     7    19 |
igr | igr 2878 |     8    11    32 |     7    15    33 |     8     8    17 |
igs | igs 2874 |     7     9    24 |     7    14    33 |     9     8    16 |
jpl | jpl 2760 |     7    12    23 |    10    15    43 |    12    10    33 |
mit | mit 2976 |     8     9    29 |     8    14    35 |     9     8    17 |

Table 5.1580.6   GPS week: 1580   Day: 6   MJD: 55310.0

CENT| CLK EPO  |        BRUS       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 2965 |     7     7    20 |     7    10    28 |     8     7    19 |
emr | emr 2858 |    10    14    35 |     8    15    35 |    11    12    28 |
esa | esa 2880 |     8     7    22 |     6    12    29 |    10     9    20 |
gfz | gfz 2769 |     8     8    22 |     6    17    30 |     8     7    19 |
grg | grg 2880 |     8     9    24 |     7    11    39 |     8     9    24 |
igr | igr 2870 |     8     9    26 |     7    15    31 |     8     8    20 |
igs | igs 2873 |     8     8    26 |     6    13    29 |     9     9    21 |
jpl | jpl 2845 |     8    10    28 |     8    16    36 |    10    12    28 |
mit | mit 2976 |     8     7    25 |     7    11    29 |     8     9    23 |


Table 6: Earth Orientation Parameters weekly summary.                          
                                                                              
        Weekly mean and standard deviation of Centre ERP, ERP rates and       
        LOD differences with respect to IGS combined values. See Table 7 for  
        the daily summaries.                                                  
                                                                              
        Xpole,Xrt: x pole and x pole rate                          
        Ypole,Yrt: y pole and y pole rate                       
        LOD      : Length Of Day                                               
                                                                              
        AC LOD BIAS    : 21-day mean LOD bias with respect to Bulletin A     
        AC LOD BIAS RMS: RMS of AC LOD BIAS                              
                                                                              
        FLAG: "u" (used), "x" (excluded), "-" (no submission)                 
              for Xpole, Ypole, Xrt, Yrt and LOD                              

Table 6.1580   GPS week: 1580   MJD: 55304.500-55310.500

                                                         AC LOD  AC LOD
CENT  FLAG  |   Xpole   Ypole     Xrt     Yrt    LOD |    BIAS  BIAS RMS
            |   [uas]   [uas]   [uas/d] [uas/d]  [us]|    [us]    [us]
------------+----------------------------------------+------------------
cod   xxxxx |      23     -36     107     122      5 |       6     16
            |      22      25      94      93      9 |       2
emr   uuuxu |      12      54    -104     393      3 |      59     61
            |      13      23      82      80      5 |       3
esa   uuuuu |     -26     -41       4     -95      2 |      17     22
            |      15      17      65      76      3 |       3
gfz   uuuuu |      -1      76      17      80     -5 |      26     29
            |      18      18      63      77      4 |       1
grg   xxxxx |      65     -61      73     217      0 |       9     13
            |      49      92     293      90     23 |       3
igr   xxxxx |       7      32     -30      68     -2 |      -2     12
            |      22      17      56      59     11 |       1
irf   xxxxx |      -4     -16      13     -10      1 |       4     17
            |      10       8      58      50      4 |       4
jpl   uuuuu |      22     -23      77     139      7 |      25     30
            |      47      21      75      65     11 |       3
mit   uuuuu |     -23     -17      87    -118      4 |      13     22
            |      14       8      61      65      5 |       5
ngs   uuuuu |      47     -21    -116      96     -4 |       6     16
            |      33      60     151      87      5 |       1
sio   xxxxx |    -335     163    -456     133     15 |      48     52
            |      14      14      82      82      5 |       7


Table 7.1580.0   GPS week: 1580   Day: 0   MJD: 55304.500

                                                         AC LOD  AC LOD
CENT  FLAG  |   Xpole   Ypole     Xrt     Yrt    LOD |    BIAS  BIAS RMS
            |   [uas]   [uas]   [uas/d] [uas/d]  [us]|    [us]    [us]
------------+----------------------------------------+------------------
cod   xxxxx |      52     -39     105     147     -3 |       5     17
emr   uuuxu |      19      50     -84     398     -4 |      56     58
esa   uuuuu |     -48     -26      28    -248      3 |      13     19
gfz   uuuuu |     -14      86     -11     151     -6 |      26     30
grg   xxxxx |     -23    -192     508     239    -18 |      14     18
igr   xxxxx |      17      47      22     125    -17 |       0     13
irf   xxxxx |      -3      -5      31     -32      9 |      -2     17
jpl   uuuuu |      32     -22     149     125      3 |      22     28
mit   uuuuu |     -24      -1     131    -138     14 |       6     19
ngs   uuuuu |      77     -77    -198     229    -11 |       7     16
sio   xxxxx |    -324     169    -447      67     23 |      39     42

Table 7.1580.1   GPS week: 1580   Day: 1   MJD: 55305.500

                                                         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 |      24     -54      31     159     -7 |       5     17
emr   uuuxu |      18      36       1     375      2 |      56     58
esa   uuuuu |     -15     -18    -128    -128      8 |      14     20
gfz   uuuuu |      14      84     -16      67     -9 |      26     29
grg   xxxxx |     109     -99      46     258    -22 |      11     15
igr   xxxxx |      32      30     -29      99    -16 |      -2     12
irf   xxxxx |       6     -11     -85      31      1 |       0     18
jpl   uuuuu |      -6      -4     125     240      3 |      21     26
mit   uuuuu |     -17     -17      -8     -61      6 |       8     21
ngs   uuuuu |      14     -67     131      30     -8 |       6     16
sio   xxxxx |    -320     161    -578     200     17 |      41     45

Table 7.1580.2   GPS week: 1580   Day: 2   MJD: 55306.500

                                                         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 |      -1       8     119     207      9 |       6     17
emr   uuuxu |       6      46     -40     279      8 |      58     61
esa   uuuuu |     -31     -50     -15     -49     -1 |      18     23
gfz   uuuuu |     -17      76     -48     121     -1 |      27     30
grg   xxxxx |     120     -18    -160     281      2 |      10     15
igr   xxxxx |       4      39    -110     -16     -2 |      -1     12
irf   xxxxx |     -17     -23     -29       6      1 |       4     18
jpl   uuuuu |     121     -12      77      72      5 |      23     29
mit   uuuuu |     -34     -24      30     -97      6 |      12     22
ngs   uuuuu |      35       4      22      25     -5 |       7     16
sio   xxxxx |    -345     142    -556     182     18 |      46     50

Table 7.1580.3   GPS week: 1580   Day: 3   MJD: 55307.500

                                                         AC LOD  AC LOD
CENT  FLAG  |   Xpole   Ypole     Xrt     Yrt    LOD |    BIAS  BIAS RMS
            |   [uas]   [uas]   [uas/d] [uas/d]  [us]|    [us]    [us]
------------+----------------------------------------+------------------
cod   xxxxx |      52     -56     110     195     -1 |       6     17
emr   uuuxu |      -5      48    -181     399      6 |      58     61
esa   uuuuu |       0     -37      46    -105     -1 |      18     23
gfz   uuuuu |      21      57     -13     185     -9 |      26     30
grg   xxxxx |      92    -151     213     233    -13 |       8     13
igr   xxxxx |      23      22       1     106     -4 |      -2     13
irf   xxxxx |     -15     -22      -8      -3     -3 |       4     17
jpl   uuuuu |     -13     -61      75      48     23 |      23     29
mit   uuuuu |     -43     -25      75    -111     -1 |      14     22
ngs   uuuuu |      41      33     -67      62     -4 |       5     17
sio   xxxxx |    -358     163    -444      92     13 |      48     52

Table 7.1580.4   GPS week: 1580   Day: 4   MJD: 55308.500

                                                         AC LOD  AC LOD
CENT  FLAG  |   Xpole   Ypole     Xrt     Yrt    LOD |    BIAS  BIAS RMS
            |   [uas]   [uas]   [uas/d] [uas/d]  [us]|    [us]    [us]
------------+----------------------------------------+------------------
cod   xxxxx |       4     -22     295      33      5 |       4     16
emr   uuuxu |       7     106    -235     324      4 |      58     60
esa   uuuuu |     -21     -39      -4     -62      1 |      17     23
gfz   uuuuu |      19     107     142      61     -9 |      24     27
grg   xxxxx |      70     -13     202     171     -4 |       6     12
igr   xxxxx |      17      46     -10      -5      3 |      -3     13
irf   xxxxx |       7      -8      85     -48      1 |       4     17
jpl   uuuuu |       6     -22      25     171     16 |      24     30
mit   uuuuu |      -7     -13     136    -143      3 |      14     23
ngs   uuuuu |      10    -105    -200      89     -4 |       4     16
sio   xxxxx |    -332     188    -360      50     15 |      50     54

Table 7.1580.5   GPS week: 1580   Day: 5   MJD: 55309.500

                                                         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     -25      97     161     20 |       7     15
emr   uuuxu |       4      45     -71     521     10 |      61     63
esa   uuuuu |     -33     -67      41     -44      2 |      19     23
gfz   uuuuu |      -5      65      51     -24      2 |      24     28
grg   xxxxx |      56     -26     112      35      7 |       8     12
igr   xxxxx |     -26       0      22      52      7 |      -2     12
irf   xxxxx |       1     -22      44      61      2 |       7     15
jpl   uuuuu |      23      -2     150     171      8 |      28     33
mit   uuuuu |      -7     -23      87     -39      2 |      18     22
ngs   uuuuu |      49      32    -300      29     -5 |       5     16
sio   xxxxx |    -324     157    -410     266     14 |      55     58

Table 7.1580.6   GPS week: 1580   Day: 6   MJD: 55310.500

                                                         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 |      21     -66      -4     -46     11 |       9     15
emr   uuuxu |      33      48    -117     454     -3 |      63     64
esa   uuuuu |     -33     -52      63     -32     -1 |      20     24
gfz   uuuuu |     -22      59      16      -1     -5 |      24     28
grg   xxxxx |      33      75    -412     302     47 |       6     10
igr   xxxxx |     -20      43    -106     118     13 |      -1     11
irf   xxxxx |      -7     -20      54     -88     -4 |       9     14
jpl   uuuuu |      -8     -40     -58     144    -12 |      30     33
mit   uuuuu |     -27     -17     162    -236     -3 |      20     22
ngs   uuuuu |     103      34    -201     210      6 |       5     16
sio   xxxxx |    -340     161    -393      77      8 |      59     60



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