[IGSREPORT-20734] Wk 1681 IGS Final Orbits

IGS ACC igs.acc at noaa.gov
Thu Apr 12 11:09:09 PDT 2012


Author:  AC Coordinator / NOAA NGS

sum-file Version 2.0
Final IGS Orbit Combination - Week 1681   (Mar 25, 2012 - Mar 31, 2012)

Contacts: J. Griffiths (jake.griffiths at noaa.gov)
          K. Choi (kevin.choi 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:

igs1681[0-6].sp3  IGS GPS ephemeris files in SP3 format.
igs1681[0-6].clk  IGS GPS satellite and station clocks in clock RINEX format.
igs1681[0-6].cls  IGS GPS clock combination summary report.
igs16817.erp      Earth Rotation Parameters (ERP) and their rates as well as
                  Universal Time (UT1-UTC) and Length Of Day (LOD) associated 
                  with IGS ephemerides.
igs16817.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 of poorer consistency (GRG),
    they provide broadcast clocks (NGS), or clock corrections are not provided
    (SIO).  The clock information not used is still compared to combination for
    completeness.  
    The value of 999999.999999 microseconds, according to the sp3 format 
    convention, is used to signify that no clock solution is available and 
    therefore must not be used.

 2. Rapid (IGR) orbits/clocks are included in the combination for statistics only.
    Starting week 1582, a new solution from CNES/GRGS (GRG) is included with
    weight except for the clock and LOD combinations.

 3. The following centre clock solutions, which provide broadcast clock
    corrections, were excluded from the combination but kept in the combination
    statistics:
             -> Centre: NGS 

 4. The following clock solutions were excluded from the combination because they
    were biasing the combined clock solutions (clock shifts/outliers) but were
    kept for the RMS computation.  Duplicate entries can arise due to separate
    combination runs for the 30-s clocks ACs (listed first) and the 5-min clock
    ACs (listed second).
    
               Day | Centre | PRN/STA list
               ----+--------+---------------
                0  |  ALL   | 8
                0  |  COD   | KOUC
                0  |  EMR   | 8
                0  |  ESA   | 4 5 7 10 12 13 15 17 19 20 22 23 29 30 31 32 4 5
                0  |  ESA   | 7 10 12 13 15 17 19 20 22 23 29 30 31 32 AREQ BRST
                0  |  ESA   | BRST NNOR
                0  |  GFZ   | 9 19 27 29
                0  |  GRG   | 19 ONSA
                0  |  JPL   | 19 29
                1  |  COD   | 4 SUTM
                1  |  EMR   | 8 8
                1  |  ESA   | 4 5 7 10 11 12 13 15 17 19 20 21 22 23 26 29 30 31
                1  |  ESA   | 32 4 10 22 PALM
                1  |  GFZ   | 4 5 8 15 19 29 30 BRFT KARR PALM WES2
                1  |  GRG   | ONSA
                1  |  JPL   | 4 8 9 19
                1  |  MIT   | 3 22 27 8 9 22 27
                2  |  COD   | WILL
                2  |  EMR   | 8 8 27
                2  |  ESA   | 4 5 7 8 10 11 12 13 15 17 19 20 22 23 26 29 30 31
                2  |  ESA   | 32 10 22 MATE NNOR
                2  |  GFZ   | 4 7 8 19 27 HARB
                2  |  GRG   | ONSA
                2  |  JPL   | 4 8 9 19 27 TIXI
                2  |  MIT   | 11 22 8 9 11 22 27
                3  |  ALL   | 8
                3  |  COD   | CAS1
                3  |  EMR   | 8 4 GRAZ WTZR
                3  |  ESA   | 4 5 7 8 10 11 12 13 15 17 19 20 21 22 23 26 29 30
                3  |  ESA   | 31 32 4 5 7 10 12 13 15 17 19 20 21 22 23 29 30 31
                3  |  ESA   | 32 NNOR NYAL
                3  |  GFZ   | 4 19 27 29 TIXI
                3  |  GRG   | 19 29 ONSA
                3  |  JPL   | 4 9 19 29
                3  |  MIT   | DAV1
                4  |  COD   | 27 9 27
                4  |  EMR   | 4 8 4 GRAZ WTZR
                4  |  ESA   | 4 5 7 10 11 12 13 15 17 19 20 21 22 23 26 29 30 31
                4  |  ESA   | 32 4 5 7 10 11 12 13 15 17 19 20 21 22 23 29 30 31
                4  |  ESA   | 32 AREQ MATE DUBO NNOR UNSA
                4  |  GFZ   | 9 10 19 MCM4
                4  |  GRG   | 10 SPT0
                4  |  JPL   | 4 10 19
                4  |  MIT   | 10 10 CAS1
                5  |  COD   | 9 27 MOBS
                5  |  EMR   | 8 4 8
                5  |  ESA   | 4 5 7 10 11 12 13 15 17 19 20 21 22 23 26 29 30 31
                5  |  ESA   | 32 9 10 22 27 CHUR MAW1 NNOR UNSA
                5  |  GFZ   | 8 9 19 27 29 30 HOLM MKEA POTS
                5  |  GRG   | ONSA
                5  |  JPL   | 4 8 19 27 29
                5  |  MIT   | 8 BRST CAS1
                6  |  COD   | WILL XMIS
                6  |  EMR   | 8 8 27
                6  |  ESA   | 4 5 7 10 11 12 13 15 17 19 20 22 23 26 29 30 31 32
                6  |  ESA   | 10 22 AREQ MATE NNOR POTS
                6  |  GFZ   | 8 9 19 27 29
                6  |  GRG   | ONSA
                6  |  JPL   | 8 9 19 29
                6  |  MIT   | 8 9 27 CAS1 MAW1

    
 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   | ~19:00 | ~ 0.06 ns
                4  |  ESA   | ~03:18 | ~ -0.10 ns
                5  |  ESA   | ~06:10 | ~ -0.06 ns
                6  |  ESA   | ~09:20 | ~ 0.09 ns

 6. Starting 5-Nov-2006 (GPS Week 1400, day 0, MJD 54044) until 16-Apr-2011
    (GPS Week 1631, day 6, MJD 55667) 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.  The IGS05 frame
    is also the basis for the homogeneously reprocessed IGS products from GPS
    Weeks 730 to 1459 (1994-2007); see IGSMAIL #6136.
    Starting 17-Apr-2011 (GPS Week 1632, day 0, MJD 55668) all IGS products,
    are based on the IGS realization of the ITRF2008 reference frame (IGS08).
    For more information see IGSMAIL #6354.
    

 7. Small rotations were applied to all the AC orbit and ERP values in order
    to align them to the current IGS reference frame. These rotations were
    estimated in the IGS SINEX combination process, performed by the IGS Reference
    Frame Coordinator at the Institut Geographique National (IGN). 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  |    -.4    -.3   -1.0     -56      0     -1     .17
       EMR  |    2.9   -3.8    9.1      -4      8     13     .70
       ESA  |    3.3     .9     .3      35   -137    127     .42
       GFZ  |   -1.0     .4    -.7     -45     27    -27     .23
       GRG  |   -1.1    -.9     .4     -59     43    -14     .32
       JPL  |   -5.1    -.9    9.5      -5    -28     26     .49
       MIT  |    6.1   -5.1   11.7     -47     31    -51     .50
       NGS  |    3.2   -2.1   13.8     -65      7     14     .58
       SIO  |   -2.4   -4.1   -5.1     -24    -54    125     .85


 8. 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.

 9. 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.

10. Starting 5-Nov-2006 (GPS Week 1400, day 0, MJD 54044) until 16-Apr-2011
    (GPS Week 1631, day 6, MJD 55667) the absolute antenna model is introduced
    (IGSMAIL #5438). The antenna phase center offsets and phase center
    variations are given in the file:
        ftp://igs.org/igscb/station/general/igs05.atx
    These antenna calibrations are also used in the homogeneously reprocessed
    IGS products from GPS Weeks 730 to 1459 (1994-2007); see IGSMAIL #6136.
    Starting 17-Apr-2011 (GPS Week 1632, day 0, MJD 55668) the absolute antenna
    model is updated (IGSMAIL #6255 & #6374) as given in the file:
        ftp://igs.org/igscb/station/general/igs08.atx
    The JPL solution did not use IGS08/igs08.atx until GPS Week 1649, which
    caused their RMS clock residuals to be higher during that period than for
    the other centres; since GPS Week 1632 the JPL solution is excluded from
    the weekly SINEX combination.

    
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 1.1681.a). It also displays the computed satellite
position sigmas for the combined orbits (table 1.1681.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 2.1681.[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 3.1681.[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 5.1681.0-6).

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 1681 summary.                       (Mar 25, 2012 - Mar 31, 2012)

Table 1.1681.a   GPS week: 1681   MJD: 56011.000-56017.000

         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  261|    0     0     0    42   -30     6  -.26   10    9 |    -569    -185     27    193
        |    0     0     1    11    14    20   .02           |     651    1241
emr   94|    0    -1     2   -29   -22   -38   .44   22   22 |    4996    -422     37    256
        |    1     1     2    17    21    18   .03           |     659    1053
esa  135|    0     0    -1  -114   179     9   .26    9    9 |    -434     790     28    592
        |    0     0     1    18    16    21   .02           |    1147     803
gfz  191|    0     0    -1    28   -95   -18  -.23   13   13 |     315    -295     33    161
        |    1     1     2    83    49     8   .02           |     245     785
grg  123|    0     2    -3    55  -102   -24   .61   17   16 |      38    -140     56    233
        |    0     0     2    13    16    15   .03           |     394     848
igr  n/a|    0     0    -1   -56   -25   -32  -.09    6    5 |   11810   -1366     25    143
        |    0     0     0    18    17    16   .03           |    2433    1264
jpl  149|    0    -1    -2   -41    32    24   .55   17   17 |    2272    -450     31    161
        |    1     1     2    14    11    38   .02           |     746    1124
mit  275|    0     0     0    27   -76   -31  -.36   11   10 |     -13     -96     28    209
        |    0     0     0    28    24    20   .01           |     356     828
ngs  229|    0     1     4    73   -46   -11  -.27   12   10 |   47294  150112   1899   3672
        |    1     0     1    37    24    16   .03           |  474352  918032
sio  233|   -1     0     1   -19    75    94  -.22   20   19 |     ---     ---    ---    ---
        |    1     0     0    32    24    16   .02           |     ---     ---


Table 1.1681.b   GPS week : 1681   MJD: 56011.000-56017.000   

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



Table 2: Daily transformation of each centre to the combined IGS orbit and
         clocks for each day of the week. The transformation displayed is the
         sum of a priori and estimated transformations.
         WRMS - RMS weighted by the centres SP3 header accuracy codes.
         STA  - Number of stations in the daily solutions.
   
Table 2.1681.0   GPS week: 1681   Day: 0   MJD: 56011.000                            

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  261|    0     0     0    47   -27    -4  -.30   10    9 |      20    -686     42    108
        |                     13    28                       |
emr   94|   -2     0     5    -9   -18   -55   .42   22   22 |    6317   -2159     63    168
        |                    -22     7                       |
esa  135|    0     0     0  -106   168     7   .26    9    9 |    -242     987     44    385
        |                     20   -14                       |
gfz  191|    0     0    -2   -58   -89   -28  -.27   15   14 |     518   -1182     35    131
        |                    -31    22                       |
grg  123|    1     1    -6    53   -90   -10   .61   17   16 |     583   -1176     45    211
        |                    -15   -34                       |
igr  n/a|    0     0     0   -33   -23   -49  -.10    6    5 |   16237   -3544     30    125
        |                     12    42                       |
jpl  149|    1    -1     1   -42    33    71   .55   17   17 |    3767   -2479     39    127
        |                     49    -7                       |
mit  275|    1     0     1    32   -56   -53  -.37   14   11 |     586   -1051     36    144
        |                     24    23                       |
ngs  229|    0     0     2   116   -45   -10  -.23   12   10 |     -42    -624   1494   3234
        |                    -97     5                       |
sio  233|   -2     1     1   -49    89    75  -.22   21   21 |     ---     ---    ---    ---
        |                     22   -27                       |

Table 2.1681.1   GPS week: 1681   Day: 1   MJD: 56012.000                            

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  261|    0     0    -1    54   -16   -17  -.28   10    9 |     276   -2581     24    260
        |                     35   -19                       |
emr   94|    0     0     2   -32   -35   -11   .48   21   21 |    4793   -1401     21    329
        |                     -6    -1                       |
esa  135|    0     0     1   -95   187    40   .23    8    8 |   -1232     539     19    802
        |                      5   -19                       |
gfz  191|    0     0    -4   -70  -143    -9  -.23   13   13 |     119    -496     35    173
        |                    -26    59                       |
grg  123|    0     1    -3    46   -84   -47   .63   16   15 |     -45    -358     79    274
        |                    -18   -45                       |
igr  n/a|    1     0    -2   -46    -4   -42  -.13    6    5 |   13557   -2362     24    160
        |                     18    18                       |
jpl  149|    0     0     0   -50    51     0   .55   17   17 |    1976   -1247     27    199
        |                     11   -25                       |
mit  275|    1     0     0    40   -97   -36  -.35   10    8 |     101   -1130     21    275
        |                      1    22                       |
ngs  229|    0     0     3   108   -18    -4  -.24   12   10 |     247   -2457   2280   3359
        |                     12    49                       |
sio  233|   -2     0     0     5    54    96  -.24   19   18 |     ---     ---    ---    ---
        |                    -14   -49                       |

Table 2.1681.2   GPS week: 1681   Day: 2   MJD: 56013.000                            

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  261|    0     0     0    38   -41    21  -.24   10    9 |   -1497     608     22    282
        |                      6     2                       |
emr   94|    1    -1     4   -22   -50   -21   .45   20   20 |    4377      28     20    339
        |                    -46   -10                       |
esa  135|    0     0    -1   -93   186   -10   .26    9    9 |    1862    -778     21    828
        |                     15   -11                       |
gfz  191|    0     2    -1   -16   -14   -11  -.22   14   14 |     524     -99     36    182
        |                    -29    33                       |
grg  123|    0     1    -7    62  -111   -35   .65   18   17 |     -87     350     53    251
        |                    -49   -23                       |
igr  n/a|    1     0    -1   -59   -42   -38  -.10    5    5 |   12341   -1353     24    123
        |                     -4    23                       |
jpl  149|    0    -3    -1   -50    22    60   .56   17   17 |    1922    -140     28    205
        |                     14   -21                       |
mit  275|    0     0     0    21   -67   -43  -.34   10    8 |    -387     639     25    279
        |                      3    10                       |
ngs  229|    0     1     4    75   -82     0  -.27   12    9 |   -1300     387   2063   3761
        |                     27   108                       |
sio  233|   -1     0     0   -24    73    95  -.22   19   18 |     ---     ---    ---    ---
        |                    -13   -63                       |

Table 2.1681.3   GPS week: 1681   Day: 3   MJD: 56014.000                            

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  261|    0     0     0    22   -38    31  -.23   10    9 |    -343    -713     35     85
        |                     26   -23                       |
emr   94|    2     0     2   -66   -38   -48   .42   20   20 |    4451    -175     60    139
        |                    -24    -8                       |
esa  135|    0    -1     0  -145   169    -8   .24    8    8 |    -638     921     37    362
        |                     16     2                       |
gfz  191|    0     0    -4   160   -46   -17  -.23   12   11 |     261    -341     33    123
        |                    -12    55                       |
grg  123|    0     2    -3    34   -97   -26   .63   17   15 |     103    -130     49    208
        |                      2   -28                       |
igr  n/a|    0     0    -1   -90   -27   -43  -.07    5    5 |   10822   -1094     26    146
        |                    -21    11                       |
jpl  149|    1    -2    -3   -48    40     3   .55   17   17 |    1455    -315     36    124
        |                    -29   -15                       |
mit  275|    0     0     0    77   -78   -12  -.36   11   10 |      67     -95     33    107
        |                    -12     1                       |
ngs  229|   -1     1     4     3   -74   -11  -.28   11   10 |    -632    -164   1841   3768
        |                     72    54                       |
sio  233|   -1     1     1    35    87    93  -.21   20   20 |     ---     ---    ---    ---
        |                    -44   -82                       |

Table 2.1681.4   GPS week: 1681   Day: 4   MJD: 56015.000                            

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  261|    0     0     0    55   -11   -11  -.24   10    9 |    -301     517     23     75
        |                    -42   -37                       |
emr   94|    0    -1     3   -27   -20   -30   .47   22   22 |    4746    -306     60    162
        |                    -50   -12                       |
esa  135|    0     0    -2  -126   195    -7   .27    9    9 |    -388     945     41    327
        |                     70     3                       |
gfz  191|    0     0    -2    75  -123   -18  -.22   13   13 |     396    -865     30    133
        |                    -44    62                       |
grg  123|    1     2    -4    77   -99   -12   .58   17   16 |     506   -1222     53    221
        |                    -51   -31                       |
igr  n/a|    0     0    -1   -48    -6   -29  -.10    6    6 |   10505   -1218     25    169
        |                    -48    24                       |
jpl  149|    0    -1    -3   -11    32    52   .57   17   16 |    1911    -353     33    125
        |                    -29   -43                       |
mit  275|    0    -1     0   -14   -89   -30  -.35   11   11 |     143    -442     32    122
        |                      9    -6                       |
ngs  229|   -1     0     5    53   -28     9  -.26   12   10 | -642437 2052909   1819   3847
        |                     -1    59                       |
sio  233|    0     0     1   -58    51    96  -.19   20   19 |     ---     ---    ---    ---
        |                    -17   -84                       |

Table 2.1681.5   GPS week: 1681   Day: 5   MJD: 56016.000                            

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  261|    0     0     2    39   -51    28  -.25   11   10 |   -1116     764     22    308
        |                     26    19                       |
emr   94|    1    -1     2   -24   -10   -64   .46   24   24 |    5016    1073     17    350
        |                    -42   -58                       |
esa  135|    0     0    -4  -122   151    36   .29    8    7 |   -1806    1895     15    691
        |                     26     6                       |
gfz  191|    1     0     0    77  -108   -31  -.22   13   12 |     511    -371     31    215
        |                    -40    84                       |
grg  123|    0     2    -2    55  -134   -34   .58   17   16 |    -319     539     52    247
        |                    -23     8                       |
igr  n/a|    0     0    -1   -49   -53   -24  -.06    5    5 |    9902      44     26    138
        |                    -19    57                       |
jpl  149|    0    -2    -3   -31    15    13   .56   18   17 |    2285     925     28    192
        |                     28   -55                       |
mit  275|    0     0     0    22   -38   -47  -.37   11   10 |    -140     379     21    282
        |                     12   -14                       |
ngs  229|   -3     2     6    74   -50   -25  -.30   12   11 |  976214 -999999   1919   4157
        |                    -19    34                       |
sio  233|    1     1     1   -15   117    76  -.25   19   18 |     ---     ---    ---    ---
        |                    -21  -101                       |

Table 2.1681.6   GPS week: 1681   Day: 6   MJD: 56017.000                            

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  261|    0     0     1    37   -25    -5  -.27   12   10 |   -1023     794     23    236
        |                     39   -10                       |
emr   94|    0    -2    -1   -24    14   -37   .41   22   22 |    5274     -15     21    309
        |                    -42   -47                       |
esa  135|    1     0     0  -107   197     6   .27    9    9 |    -598    1021     22    752
        |                     32     6                       |
gfz  191|    3     2     2    33  -144    -9  -.20   16   15 |    -120    1286     31    170
        |                    -25    63                       |
grg  123|    2     2     1    59   -98    -7   .60   16   15 |    -475    1014     61    219
        |                    -38   -15                       |
igr  n/a|    0     0    -2   -65   -21    -2  -.05    6    5 |    9307     -35     26    144
        |                    -14    52                       |
jpl  149|   -1    -3    -5   -51    34   -32   .50   18   17 |    2591     458     29    156
        |                    -26    37                       |
mit  275|    0    -1    -1    12  -109     3  -.36   12   11 |    -464    1023     28    257
        |                     11    10                       |
ngs  229|    0     0     2    79   -26   -39  -.28   12   11 |    -986     732   1878   3579
        |                     -1   -40                       |
sio  233|    0     0     0   -31    54   126  -.21   22   20 |     ---     ---    ---    ---
        |                    -23   -66                       |

       
       
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 3.1681.0   GPS week: 1681   Day: 0   MJD: 56011.000                            

        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
------+--------------------------------------------------------+---------------------------------------------------------
   1E |   14   24   12   12   16    4   12    7   13   11    4 |    24   31   34   29   37   26   34   23   27   31    27
   2E |    7   29    7   16   22    6   21   11   14   12    5 |    25   35   26   27   39   24   31   24   27   25    27
   3  |    8   16    8    7   12    7   12   10    7   19    3 |    18   22   23   21   27   17   24   19   18   21    20
   4E |   11   20    9   11   12    6   18   19   17   23    5 |    62   63   65   65   65   62   59   60   68   59    61
   5  |    8   20    7   18   16    6   22    9   11   22    5 |    15   28   19   25   30   15   23   19   18   17    17
   6  |   10   15    8    8    9    6   11    9    9   17    3 |    19   20   22   23   23   17   21   21   15   22    19
   7E |    6   17   13   14   15    5   16   15   12   13    4 |    17   24   20   19   25   16   22   20   22   19    18
   8E |   17   24   10   16   20   10   23   12   21   17    6 |    23   29   25   27   25   22   24   33   36   28    24
   9E |   16   20   10   21   20    8   20   31   19   24    7 |    52   57   51   51   62   51   64   51   46   57    51
  10  |    8   18    8   11   16    3   15    9    8   12    3 |    24   21   24   31   30   23   15   28   26   23    23
  11  |    6   19   10   17   21    3   11   10   12   20    4 |    15   29   21   22   34   16   24   17   19   25    17
  12  |    8   28    7   14   16    7   19   15   10   22    5 |    27   33   30   26   31   25   29   34   28   28    27
  13  |    7   21    7   14   18    6   13   15   10   19    4 |    26   33   28   32   38   26   33   27   27   26    26
  14  |    9   25   10   16   13    7   16   16    9   34    5 |    27   34   32   36   37   28   32   35   26   38    29
  15  |   11   28    7   11   17    9   22   11   15   28    5 |    21   35   25   31   38   24   30   26   22   27    23
  16  |    9   27    8   11   15    4   20    8   10   21    4 |    16   29   23   23   28   16   26   21   20   20    19
  17  |    8   25    9   16   13    7   20   15   12   32    5 |    22   33   21   27   24   22   31   20   24   27    20
  18  |    9   28   10   14   20    6   23   10   10   17    5 |    23   34   25   29   33   23   31   26   27   26    23
  19  |    8   24   11   11   12    7   18    9   10   24    4 |    19   31   17   17   22   16   32   15   19   19    17
  20  |    8   22    8   10   21    3   15   17    9   18    4 |    16   31   23   24   30   17   27   21   23   18    19
  21E |    7   19    7   15   37    5   16    9   12   12    5 |    29   33   25   27   41   28   32   30   30   32    27
  22  |    9   21   12   11   18    4   17   11   10   17    4 |    22   25   26   26   31   20   22   25   23   26    20
  23  |    6   21    7   19   16    5   12    7    9   25    4 |    29   35   34   38   37   32   33   31   33   28    31
 X24  |    5  ---  ---  ---  ---   40  ---  ---  ---  ---    0 |    27  ---  ---  ---  ---   23  ---  ---  ---  ---    26
  25  |    9   19   11   14   10    4   15   13   13   14    4 |    28   34   30   25   35   27   37   34   24   27    27
  26  |   11   27    6   13   14    5   15    7   12   18    4 |    15   32   18   22   28   17   21   16   11   15    16
  27E |   12   17   12   16   16    8   20   22   12   26    5 |    49   52   50   54   61   50   62   40   45   61    49
  28  |   11   27    7   15   19    5   17   11   11   28    5 |    20   31   27   30   36   21   26   28   30   30    24
  29  |   12   25   14   13   20    7   20    9   13   35    6 |    16   32   22   19   24   19   33   21   22   27    19
  30  |    8   20    8    9   13    5   11   12    9   11    3 |    14   25   16   17   17   16   23   21   19   16    16
  31E |    9   19    9   11   16    3   15   21    8   13    4 |    20   28   22   21   26   21   26   24   23   19    21
  32  |    8   22    8   29   18    4   16   14    6   14    5 |    16   21   24   36   31   17   24   21   20   19    20
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |   10   22    9   15   17    6   17   14   12   21      |T   24   32   27   29   33   24   30   26   26   27    25
 WRMS |    9   22    9   14   16    5   17   11   10   21      |NE  20   29   24   26   30   20   27   23   22   23    21
 MEDI |    8   21    8   14   16    6   16   11   11   19      |MD  22   31   25   27   31   22   29   24   24   26    23

Table 3.1681.1   GPS week: 1681   Day: 1   MJD: 56012.000                            

        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
------+--------------------------------------------------------+---------------------------------------------------------
   1E |   17   19   13   11   18    5   11    9   17   11    5 |    22   33   33   25   35   23   32   21   24   28    25
   2E |    7   27    9   14   19    8   23   12   10   13    5 |    18   30   22   19   24   15   26   20   20   20    18
   3  |   12   14    7   10   12    6   11    5    8   17    3 |    17   23   22   19   23   18   22   19   21   19    19
   4E |   12   21    9   14   17    8   18   15   22   24    5 |    50   46   46   49   47   48   46   45   54   46    46
   5  |    8   21    6   18   19    5   18    8    8   15    4 |    15   29   19   17   28   13   23   14   16   15    15
   6  |    9   14    8    7    9    6   10    5   10   15    3 |    15   22   19   16   21   16   21   18   19   18    17
   7E |    7   17    8   12   12    3   16    9    9   10    3 |    16   22   17   20   21   14   21   19   14   18    15
   8E |   16   20    9   15   14    7   24   12   23   15    5 |    16   22   19   19   18   16   22   25   32   22    17
   9E |   15   25   14   17   19    7   24   26   18   24    7 |    41   56   44   44   53   40   58   38   40   52    42
  10  |    7   14    6   10   17    5   11   10    9   12    3 |    24   17   18   25   24   20   15   23   22   18    20
  11  |    8   13   10   15   20    3    9    8   15   16    4 |    15   25   19   14   33   12   21   12   20   16    14
  12  |    8   27    7   16   15    7   20   14   10   23    5 |    28   36   31   30   35   27   34   29   29   26    27
  13  |    5   19    7   12   18    4   13    9    6   16    4 |    17   29   17   18   32   17   29   18   15   17    17
  14  |    9   21   10   15   14    6   14   11   14   29    5 |    17   26   22   28   29   18   26   25   21   29    20
  15  |    9   23    9   16   16    8   22    7   10   25    5 |    20   33   21   24   33   22   30   18   22   17    19
  16  |   10   23   11    8   15    4   19    8    9   19    4 |    18   26   22   15   24   14   24   16   20   15    16
  17  |    8   22    9   17   12    7   20   11    9   28    5 |    22   27   19   26   23   21   30   21   24   27    19
  18  |    9   24    8   13   18    5   19    9   11   17    4 |    26   34   23   27   32   25   32   27   26   28    24
  19  |    9   23   10   10   14    9   17    6   10   21    4 |    14   27   17   13   21   13   26   13   17   13    13
  20  |   10   19    8   14   19    5   16    9   13   13    4 |    12   26   18   21   28   13   23   17   20   16    15
  21E |    8   21    7   13   16    4   17    6   13   11    4 |    29   34   22   30   31   26   34   29   24   29    25
  22  |    8   22    9   12   18    5   14   10   11   18    4 |    21   27   21   24   28   19   25   23   19   26    19
  23  |    7   20    7   13   15    4   12    5   13   21    4 |    19   31   20   22   31   19   26   21   20   19    19
 X24  |    5  ---  ---  ---  ---   30  ---  ---  ---  ---    0 |    19  ---  ---  ---  ---   21  ---  ---  ---  ---    19
  25  |    8   19    9   14   14    5   14   15   14   17    4 |    29   35   30   24   39   25   38   28   30   26    28
  26  |   11   14    6   14   15    5   15    8   10   17    4 |    21   23   18   23   24   16   21   18   17   17    17
 X27E |   11   19    7  ---   17    8   21   18   12  ---    6 |    39   48   43  ---   48   40   55   36   35  ---    40
  28  |   11   23    7   13   15    4   17   11   13   23    4 |    15   29   19   22   26   17   25   18   22   21    17
  29  |   15   23    7   11   18    4   21    7   11   28    5 |    18   27   18   18   19   15   28   16   23   22    16
  30  |    8   14    5    9   13    6   10    7    9   11    3 |    14   19   16   18   18   13   19   18   20   17    14
  31E |    9   22    9   11   19    6   17   11    8   14    4 |    17   24   17   19   24   15   24   21   18   20    16
  32  |   12   21    7   12   19    3   16    7   10   11    4 |    20   24   23   25   26   19   23   23   22   24    20
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |   10   21    8   13   16    6   17   10   12   19      |T   21   29   23   23   28   20   28   22   23   22    20
 WRMS |    9   21    8   13   15    5   17    8   10   18      |NE  18   27   20   21   27   17   25   19   21   20    18
 MEDI |    9   21    8   13   16    5   17    9   10   17      |MD  18   27   20   22   28   18   26   21   21   20    19

Table 3.1681.2   GPS week: 1681   Day: 2   MJD: 56013.000                            

        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
------+--------------------------------------------------------+---------------------------------------------------------
   1E |   10   20   11   14   16    5   13    8    8   14    4 |    27   38   34   30   39   27   36   26   25   32    28
   2E |   10   27    8   16   18    5   23   11   15   11    5 |    20   33   21   21   39   21   29   25   26   28    22
   3  |   11   13    7   10   16    4   10    5    7   17    3 |    14   23   18   20   21   14   22   14   18   17    15
   4E |   12   21    8   14   15    6   18   15   21   22    5 |    39   43   37   38   42   39   40   39   45   40    38
   5  |    7   22   10   22   22    4   16    9   15   21    5 |    16   27   18   24   36   16   24   18   18   19    17
   6  |    8   12    8   11   15    3    9    3    7   15    3 |    11   21   20   21   23   15   21   17   18   17    16
   7E |    8   15   10   12   14    4   16    8   10   10    3 |    22   27   25   18   25   20   26   22   28   21    23
   8E |   19   22   11   19   24    7   22   11   22   16    6 |    22   24   21   25   24   22   23   29   37   24    22
   9E |   17   21   13   14   24    6   22   18   12   25    6 |    44   53   46   39   60   42   59   36   39   52    43
  10  |    7   15    6   14   21    5   14    7   13   11    4 |    19   19   16   25   27   20   15   23   23   20    18
  11  |    8   15   10   15   21    6   12    7    7   18    4 |    16   28   23   22   32   16   27   15   19   20    17
  12  |    8   26    9   13   15    5   21   16   11   23    5 |    27   36   30   26   36   27   33   26   25   23    25
  13  |    8   21    9   14   18    4   15    7    9   18    4 |    18   36   25   23   35   21   33   20   23   23    21
  14  |    8   25   11   19   12    5   17   11   13   26    5 |    21   27   29   29   33   23   29   28   19   30    23
  15  |   12   26   10   16   18    8   20   10   10   23    5 |    23   33   23   26   38   23   29   20   19   20    20
  16  |   10   26   10   10   14    4   21    9   12   19    4 |    13   27   19   20   25   14   24   16   17   15    15
  17  |   10   18    9   16   14    5   19    7   12   26    4 |    25   31   25   18   23   22   30   21   26   22    21
  18  |    7   23   10   10   18    5   17    8   14   16    4 |    18   31   25   19   32   16   27   20   22   22    20
  19  |    9   20    9   11   13    6   17    8   10   22    4 |    17   30   17   17   21   14   30   15   19   15    16
  20  |   10   22    7   13   17    3   17   10    9   12    4 |    16   32   21   20   29   18   28   21   17   19    18
  21E |    7   18    9   15   35    5   16    8   11   11    5 |    28   31   30   21   49   24   32   25   25   29    27
  22  |    7   21   10   11   22    4   18   11    8   19    4 |    16   24   22   19   30   16   24   22   16   23    17
  23  |    8   20    7   16   14    4   13   11    7   22    4 |    20   35   24   26   32   24   32   24   21   24    22
 X24  |    5  ---  ---  ---  ---   24  ---  ---  ---  ---    0 |    23  ---  ---  ---  ---   18  ---  ---  ---  ---    21
  25  |    7   17    7   14   13    4   16   12   10   18    4 |    19   30   26   21   37   20   35   21   17   18    21
  26  |   13   12    5   10   19    4   11    6   11   20    4 |    25   25   19   21   29   19   22   23   24   16    21
  27E |   14   16    9   10   16    4   20   12   12   25    5 |    42   47   42   41   55   39   56   36   35   56    41
  28  |   11   20   10   12   15    4   17    7   11   25    4 |    21   30   26   25   32   22   26   26   25   26    23
  29  |   12   21    9   13   14    5   20    7   11   26    5 |    19   32   22   15   28   19   31   20   21   27    20
  30  |    7   16    5   12   12    4   13    6    8   12    3 |    14   25   18   15   21   17   24   18   18   19    16
  31E |    8   28    7   15   21    6   22    9   10   12    5 |    12   27   16   18   24   15   25   18   16   17    14
  32  |   11   19    6   14   16    3   17    7   11   12    4 |    13   22   17   18   25   16   23   19   15   19    15
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |   10   20    9   14   18    5   17   10   12   19      |T   21   30   24   23   32   21   29   22   23   24    21
 WRMS |    9   20    9   14   17    5   17    8    9   18      |NE  18   28   21   21   29   18   26   20   20   20    19
 MEDI |    8   20    9   14   16    5   17    8   11   18      |MD  19   30   23   21   32   20   28   21   21   22    21

Table 3.1681.3   GPS week: 1681   Day: 3   MJD: 56014.000                            

        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
------+--------------------------------------------------------+---------------------------------------------------------
   1E |   15   21   10   11   22    5   14   10   10   15    4 |    29   36   34   27   41   29   41   28   26   35    29
   2E |    8   26    6   13   23    4   24   13   11   15    5 |    20   33   21   23   29   22   30   25   20   26    20
   3  |    9   14    7    9   12    5    8    7   10   16    3 |    22   27   28   23   28   22   27   21   24   22    22
   4E |   15   21    9   13   18    7   20   18   19   25    6 |    38   47   39   41   46   40   44   41   47   40    39
   5  |    7   20    5   21   17    7   21   10   12   19    5 |    17   28   20   26   28   18   28   15   17   16    15
   6  |    8   14    7    9   11    4   10    7    9   14    3 |    19   23   24   21   27   19   24   21   20   19    20
   7E |    7   16   10    8   15    4   17    5   12   11    4 |    18   23   22   18   24   19   25   17   18   20    17
   8E |   19   21    8   14   18    5   21   14   16   20    5 |    16   21   19   21   16   17   20   26   25   23    15
   9E |   12   21   10   11   15    6   22   17   13   26    5 |    50   61   52   48   60   52   65   45   46   59    50
  10  |   10   15    6   10   20    5   13    8    9   14    3 |    21   22   19   26   26   22   21   25   24   21    19
  11  |    8   16    7   13   21    5   11    9   12   17    4 |    18   29   19   17   33   17   25   17   18   18    15
  12  |   10   26    6   11   14    9   21   16   14   25    5 |    26   36   28   27   33   28   27   31   26   27    24
  13  |    6   21    9   11   19    3   15    7   12   21    4 |    24   34   25   27   38   23   34   22   23   21    22
  14  |    9   22    8   15   11    5   18   10   12   24    4 |    24   29   29   35   34   28   30   29   21   32    25
  15  |    7   27    7   15   14    6   22   10   12   22    5 |    20   32   25   30   34   22   28   21   17   20    20
  16  |    6   25    5   10   13    4   20    7    7   21    4 |    15   28   21   19   27   18   25   16   17   17    16
  17  |   15   19    8   15   13    4   19   11    9   27    5 |    26   33   27   27   30   27   34   26   25   26    24
  18  |    9   26    8   12   18    6   19    9   12   16    4 |    31   39   32   29   38   29   36   29   30   30    29
  19  |    8   22    9   11   12    4   15    8   12   22    4 |    17   30   20   15   23   17   29   14   19   17    15
  20  |    9   23   13   13   20    4   18   10   12   14    5 |    17   30   22   19   31   19   27   20   18   20    17
  21E |    7   22    6   12   28    6   13   11   12   14    4 |    24   33   24   22   30   25   29   27   23   28    22
  22  |    7   22   12   12   17    4   15   12   12   19    4 |    22   28   22   25   31   22   25   24   18   25    19
  23  |    7   20    7   10   15    4   18    9    7   24    4 |    24   33   26   27   34   25   32   25   22   23    23
 X24  |    4  ---  ---  ---  ---   33  ---  ---  ---  ---    0 |    30  ---  ---  ---  ---   21  ---  ---  ---  ---    28
  25  |    7   17    9   12   14    6   14   14   10   22    4 |    24   34   27   26   38   28   36   32   27   29    26
  26  |   12   11    7   12   16    4   14   10   10   19    4 |    16   19   21   22   28   18   23   16   13   17    15
  27E |   12   18   11   10   16    6   19   12    9   26    5 |    45   54   50   43   55   45   59   40   42   55    46
  28  |   13   22   10   12   14    5   15    9    9   26    4 |    20   30   26   27   31   23   25   26   24   26    22
  29  |   13   19    7   10   16    7   20   10    9   27    4 |    16   28   19   17   20   17   29   18   16   20    15
  30  |    7   15    8    7   13    3   12    7   11   11    3 |     9   20   12   14   15   11   18   12   15   11    10
  31E |    8   22    8    9   13    5   18    9   11   13    4 |    14   24   17   16   20   13   22   16   15   14    13
  32  |    9   21    5   10   17    5   15    8   10   12    4 |    14   21   19   16   26   19   23   21   14   20    15
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |   10   20    8   12   17    5   17   11   11   20      |T   22   31   25   24   31   23   30   24   22   25    22
 WRMS |    9   20    8   11   15    5   17   10   10   20      |NE  20   28   23   23   29   21   27   21   20   21    19
 MEDI |    8   21    8   11   16    5   18   10   11   19      |MD  20   30   24   25   30   22   28   24   21   22    20

Table 3.1681.4   GPS week: 1681   Day: 4   MJD: 56015.000                            

        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
------+--------------------------------------------------------+---------------------------------------------------------
   1E |   15   21   12   14   15    4   11   16    9   14    5 |    30   40   38   29   44   30   42   33   34   35    34
   2E |    9   27    9   13   24    6   21   11    9   17    5 |    16   28   21   21   24   18   24   20   19   26    17
   3  |    6   13    8   11   10    5    9    6    8   14    3 |    15   24   21   21   21   16   22   18   21   15    18
   4E |   17   24   11   12   20    7   19   18   21   24    6 |    87   96   94   92   92   92   94   90   96   96    91
   5  |    6   22    9   19   19    5   19   16   11   19    5 |    15   29   21   20   28   15   25   18   20   18    17
   6  |    6   13    8   10   10    5   10    8   11   12    3 |    17   23   22   21   21   18   22   21   25   18    19
   7E |    6   16    8   11   10    7   16    5   10   11    3 |    12   20   19   19   18   14   21   15   16   17    14
   8E |   17   19   11   14   17    8   23   15   19   20    6 |    17   22   19   24   18   17   22   27   29   26    19
   9E |   11   20   14   11   18    5   21   14   12   24    5 |    47   55   48   49   55   45   59   42   43   56    47
  10  |    8   15    6   11   20    5   12   10    6   14    3 |    21   22   19   28   21   21   16   26   25   24    20
  11  |   11   20    7    9   20    6    9    9    8   18    4 |    12   29   19   13   32   13   24   13   17   14    14
  12  |   10   28    7   13   14    5   23   14   11   22    5 |    21   31   24   24   28   20   27   25   19   20    20
  13  |    6   20    8   12   16    6   16    9   11   22    4 |    18   32   23   23   34   20   32   19   19   23    20
  14  |    8   24   10   15   13    6   16   11   14   22    5 |    18   26   27   29   30   20   26   26   17   25    21
  15  |   10   26   11   15   16    7   21   11   12   24    5 |    19   29   23   27   32   20   27   19   19   16    18
  16  |    6   25    9   11   16    6   20   10   10   20    4 |    16   27   21   19   27   16   26   18   20   17    17
  17  |   14   22   11   14   11    6   19   15   11   33    5 |    19   28   21   21   20   20   27   27   26   34    20
  18  |    7   26   10   16   16    6   17   11   19   16    5 |    21   36   24   23   30   22   31   24   26   26    22
  19  |    7   26   11   11   10    7   18    9   12   23    4 |    12   31   20   16   20   12   27   13   16   13    15
  20  |   11   29    5   13   17    4   16   10   10   13    4 |    15   31   19   19   27   15   25   19   16   19    16
  21E |    8   20   11   14   45    9   13   12   13   17    6 |    22   29   28   27   41   25   30   27   25   26    23
  22  |    7   23   12    9   17    3   16   14   13   17    4 |    16   28   21   18   25   16   22   21   19   22    16
  23  |    7   28    8   15   14    4   14    7   12   24    4 |    15   34   23   25   30   18   28   21   14   19    18
 X24  |    5  ---  ---  ---  ---   32  ---  ---  ---  ---    0 |    16  ---  ---  ---  ---   19  ---  ---  ---  ---    18
  25  |    7   20    6   11   12    4   15   11   10   18    4 |    17   30   26   17   31   21   34   21   20   21    21
  26  |    9   12    7   15   16    7   14   11    9   17    4 |    14   16   19   24   26   16   21   13   17   13    16
  27E |   12   21   11   12   17    6   19    9   12   24    5 |    41   50   46   42   50   42   55   37   43   58    43
  28  |   12   20   10    9   17    4   20   13    9   25    5 |    16   25   24   23   29   18   24   26   22   23    20
  29  |   16   20    6   14   17    6   18   11    9   30    5 |    15   25   17   20   17   15   25   17   18   19    14
  30  |    7   12    8    8   11    5   10    6    8   10    3 |    11   20   16   15   17   12   20   13   16   14    13
  31E |    7   28    9   11   15    5   19    9    9   16    4 |     9   25   12   12   19    8   20   13   16   14    11
  32  |    9   22    5    9   15    4   15    7   12   11    4 |    12   19   17   14   23   12   19   19   14   20    14
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |   10   22    9   13   17    6   17   11   12   20      |T   20   30   25   25   30   21   29   23   24   25    22
 WRMS |    9   22    9   13   16    6   16   11   10   19      |NE  16   27   21   20   25   17   25   19   19   19    17
 MEDI |    8   21    9   12   16    6   16   11   11   18      |MD  16   28   21   21   27   18   25   21   19   20    18

Table 3.1681.5   GPS week: 1681   Day: 5   MJD: 56016.000                            

        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
------+--------------------------------------------------------+---------------------------------------------------------
   1E |   10   26    7   12   19    3   13   11   10   11    4 |    25   35   35   25   40   28   36   27   29   33    29
   2E |    9   28   10   15   18    5   21   16   12   17    5 |    24   34   26   25   30   22   30   29   21   26    23
   3  |   13   17    7   10   14    4   11    6   11   13    3 |    23   22   23   17   25   17   27   18   17   17    19
   4E |   31   24   11   13   18    8   19   17   19   25    7 |    99  102  104  107  102  106  103  110  104  110   103
   5  |    9   22   10   13   21    5   19   21   16   19    5 |    15   28   19   20   28   15   26   18   21   16    15
   6  |    9   20    5    9   12    4   10    8    9   12    3 |    19   20   20   17   23   16   26   19   17   17    18
   7E |    8   19    8   12   12    5   18    6   13   10    4 |    16   23   19   17   19   17   25   17   20   19    16
   8E |   18   28   10   19   24    7   23   12   23   19    6 |    22   28   19   28   21   24   25   29   38   27    22
   9E |   11   21    8   10   26    6   21   10   14   25    5 |    38   51   42   40   51   40   57   38   37   55    41
  10  |    7   18    6    8   20    5   15    8   11   13    3 |    26   26   26   29   26   25   22   32   29   30    25
  11  |    6   24    6   12   24    3   12    8    8   18    4 |    17   34   20   16   38   15   27   17   16   17    17
  12  |   10   30    7   13   19    3   22   10    9   21    5 |    24   34   23   23   33   22   29   21   22   23    21
  13  |    7   22    7   11   16    5   16    9   11   21    4 |    22   37   25   22   35   22   35   23   28   25    24
  14  |    7   26    8   17   12    5   16   11   10   23    4 |    17   28   19   26   27   20   26   23   17   23    18
  15  |   11   26    5   10   18    4   23   13   15   23    5 |    22   33   23   20   31   20   30   21   17   18    20
  16  |    7   25    6   13   17    6   18    7    8   21    4 |    15   27   19   20   30   15   26   15   17   16    17
  17  |   14   29    9   15   13    5   21    8   12   30    5 |    30   39   30   32   36   29   38   31   34   38    29
  18  |    9   33    7   14   16    7   19   12   13   17    5 |    31   47   35   36   43   33   40   35   32   38    33
  19  |   10   27    9   11   14    7   18    8   16   21    4 |    13   32   21   14   23   14   28   15   19   13    16
  20  |    9   30    5   17   15    5   18   11   11   12    4 |    19   32   21   22   31   19   31   23   23   22    20
  21E |    9   20    4   11   18    5   15    6   13   13    4 |    30   39   32   34   37   33   38   34   28   36    31
  22  |    7   27    9   14   19    5   15   11   11   17    4 |    17   28   18   21   29   16   24   22   18   25    17
  23  |    6   22    6   15   14    4   15    8    8   24    4 |    21   32   25   22   31   22   32   22   25   21    22
 X24  |    6  ---  ---  ---  ---   38  ---  ---  ---  ---    0 |    23  ---  ---  ---  ---   13  ---  ---  ---  ---    21
  25  |    9   21   11   13   17    5   14   12    8   17    4 |    22   33   27   21   37   24   36   21   21   21    22
  26  |   12   17    8    9   19    5   16    9   12   19    4 |    20   21   19   17   24   15   22   20   21   14    17
  27E |   11   23    8   10   14    6   20   11   14   27    5 |    43   55   48   42   51   45   59   44   42   60    46
  28  |   13   27    8   11   18    4   20   10   11   25    5 |    21   33   25   24   35   21   29   29   28   28    23
  29  |   14   22    4   14   17    6   22    7    9   30    5 |    20   33   23   23   25   22   33   23   21   29    21
  30  |    7   17    6   11   13    4   11    6   10   10    3 |    10   22   13   13   20   10   20   13   16   14    12
  31E |    7   26    8   14   13    7   18   12   10   10    4 |    14   25   20   15   23   15   23   18   16   20    15
  32  |    9   23    8   13   15    5   16    9    7   11    4 |    19   26   22   18   22   16   26   21   19   22    18
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |   11   24    8   13   17    5   18   11   12   19      |T   24   34   27   26   33   24   33   26   26   28    24
 WRMS |   10   24    7   12   16    5   17   10   11   18      |NE  20   30   22   21   29   19   28   21   21   22    20
 MEDI |    9   24    8   13   17    5   18   10   11   19      |MD  21   32   23   22   30   20   29   22   21   23    21

Table 3.1681.6   GPS week: 1681   Day: 6   MJD: 56017.000                            

        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
------+--------------------------------------------------------+---------------------------------------------------------
   1E |   27   25   10   21   16   11   18   13   15   11    6 |    62   59   59   48   67   51   60   55   62   57    57
   2  |    8   28    8   16   15    5   22   14   13   24    5 |    31   36   30   30   32   26   33   26   29   29    27
   3  |   10   17    8   10   12    4   12    9   10   16    4 |    20   23   24   26   25   20   24   20   19   22    20
   4E |   17   22   11   16   18   10   16   15   16   27    6 |   144  149  144  139  148  140  147  142  150  138   144
   5  |    6   22   11   17   17    6   20   21   12   24    5 |    18   29   20   19   27   17   26   18   21   19    16
   6  |    5   18    6   10   10    5   13    9   11   16    3 |    23   24   26   28   25   23   24   24   20   24    23
   7E |    9   21    8   14   15    6   18    6   11   11    4 |    16   18   17   17   16   12   17   13   19   17    13
   8E |   27   24   12   18   21   10   24   16   21   18    7 |    24   24   24   24   20   22   24   25   29   24    20
   9E |   10   22    8   16   16    6   21   10   11   29    5 |    61   72   60   59   70   61   77   56   56   68    61
  10  |    9   20   10   14   14    3   13   13    9   14    4 |    21   21   21   23   23   18   17   26   19   18    19
  11  |    9   20    6   13   20    5   13   11    9   20    4 |    13   25   22   12   37   13   25   15   17   15    16
  12  |   11   29    9   14   14    6   23   10   11   23    5 |    27   38   28   29   35   27   34   28   29   24    26
  13  |    8   20    9   15   16    6   16   11   11   22    4 |    24   36   29   28   39   24   36   21   25   22    25
  14  |    7   24    9   20   11    5   15   11   13   21    4 |    25   32   30   36   35   29   33   33   22   28    27
  15  |    8   23   11   15   13    6   20   16    9   24    5 |    25   32   22   30   34   26   32   28   21   21    23
  16  |    6   28    7   16   16    3   23   10    9   24    5 |    19   28   23   26   28   17   25   19   19   19    19
  17  |   18   21   12   15   12    4   20   17   10   47    6 |    29   30   30   26   28   21   30   20   26   33    22
  18  |    8   28    7   15   15    7   21   14   13   18    5 |    34   48   38   36   39   34   45   32   34   27    34
  19  |    7   24   15   16   13    7   17   11   11   23    5 |    15   28   23   23   20   19   26   18   17   14    17
  20  |   10   24   11   19   16    5   20   12    7   14    5 |    16   28   24   18   27   17   25   21   19   17    17
  21E |    6   20    8   13   18    5   17    8   11   14    4 |    26   33   27   26   31   26   36   25   26   26    25
  22  |    7   25   12   15   18    3   16   12    9   18    4 |    19   29   26   23   29   19   29   22   19   22    20
  23  |    8   19   11   22   17    4   13    8   11   25    5 |    20   31   27   29   32   22   30   23   21   19    22
 X24  |    5  ---  ---  ---  ---   22  ---  ---  ---  ---    0 |    22  ---  ---  ---  ---   12  ---  ---  ---  ---    22
  25  |    8   17    7   15   13    4   16   10   12   16    4 |    21   35   29   24   39   25   39   27   27   25    25
  26  |   15   14    8   12   15    5   13   11   13   22    4 |    19   20   18   22   25   15   21   14   18   16    15
  27E |   11   23   10   14   24    5   20   13   13   27    5 |    51   58   47   49   61   47   60   46   47   61    50
  28  |   12   27    8   14   15    5   21   17   11   25    5 |    21   32   28   31   33   21   28   30   28   29    24
  29  |   14   21    6   18   18    7   21   10    9   32    5 |    22   31   23   27   27   20   34   20   22   30    21
  30  |    7   17   10   12   16    5   13    6    9   10    3 |    11   21   12   13   21    9   19   12   15   11    11
  31E |    8   25    7   17   15    4   17    8   13   14    4 |    11   23   12   14   20    9   20   13   16   13    10
  32  |    9   19    7   17   13    5   19   10   10   11    4 |    11   15   23   18   24   15   20   19   13   17    14
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |   12   22    9   16   16    6   18   12   12   22      |T   28   35   31   30   36   26   35   28   29   29    27
 WRMS |   10   22    9   15   15    5   17   11   11   20      |NE  20   28   24   24   29   20   28   22   21   21    20
 MEDI |    8   22    9   15   15    5   18   11   11   21      |MD  21   30   26   26   29   21   29   23   21   22    22



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 4.1681   GPS week: 1681   MJD: 56011.0-56017.0

CENT| CLK EPO  |        BRUX       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3057 |U    5     4    11 |U    7     9    24 |U   43    53    99 |
emr | emr 2960 |     8     6    25 |U    8     8    30 |    37    52   103 |
esa | esa 2976 |     5     5    14 |U    7     8    24 |    30    38   197 |
gfz | gfz 2946 |U    6     6    15 |U    7     9    27 |U   37    44   108 |
grg | grg 2975 |     7     7    18 |U    7     9    30 |    52    54   123 |
igr | igr 2969 |     5     4    12 |     7     9    24 |    39    44   105 |
igs | igs 2897 |     7     5    18 |     7    10    25 |    41    44   117 |
jpl | jpl 2958 |     7     6    19 |U    7     9    26 |    35    51    92 |
mit | mit 2976 |     5     5    15 |U    7     9    26 |    52    57   120 |



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 5.1681.0   GPS week: 1681   Day: 0   MJD: 56011.0

CENT| CLK EPO  |        BRUX       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3053 |     3     4     8 |     7     9    28 |    95    90   304 |
emr | emr 2960 |     6     7    24 |     8     7    35 |   111    75   420 |
esa | esa 2976 |     4     4    12 |     6     7    27 |    23    86   351 |
gfz | gfz 2960 |     5     3    14 |     7     9    30 |   108    74   391 |
grg | grg 2976 |     6     5    16 |     6    10    34 |   104    82   396 |
igr | igr 2974 |     4     4    10 |     6     7    29 |   103    76   391 |
igs | igs 2870 |     7     6    23 |     7    11    29 |   106    76   387 |
jpl | jpl 2958 |     6     7    17 |     7     8    31 |   102    73   359 |
mit | mit 2976 |     4     5    12 |     6     6    32 |   113    79   411 |

Table 5.1681.1   GPS week: 1681   Day: 1   MJD: 56012.0

CENT| CLK EPO  |        BRUX       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3070 |     4     3     9 |     5     8    18 |    28    30    86 |
emr | emr 2960 |     6     6    20 |     6     9    24 |    26    37    69 |
esa | esa 2976 |     5     5    10 |     5     8    19 |    31    16   697 |
gfz | gfz 2865 |     7     7    15 |     6    10    26 |    35    33    71 |
grg | grg 2976 |     7     4    15 |     6     8    27 |    24    34    94 |
igr | igr 2975 |     5     4    10 |     5     9    18 |    30    30    63 |
igs | igs 2962 |     4     4     9 |     5     7    19 |    34    22   129 |
jpl | jpl 2951 |     5     5    16 |     6    10    23 |    35    34    57 |
mit | mit 2976 |     4     6    13 |     6     7    20 |    22    35    66 |

Table 5.1681.2   GPS week: 1681   Day: 2   MJD: 56013.0

CENT| CLK EPO  |        BRUX       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3051 |     4     3     9 |    10    11    32 |    99    96   151 |
emr | emr 2960 |     9     6    28 |    10     9    37 |    24    67    63 |
esa | esa 2976 |     6     5    15 |    10    10    33 |    96    88   217 |
gfz | gfz 2960 |     7     6    19 |    10    10    32 |    39    66   150 |
grg | grg 2975 |     7     6    17 |    11    10    37 |   133   114   191 |
igr | igr 2974 |     6     4    13 |    10    12    31 |    63    67   145 |
igs | igs 2938 |     6     4    15 |    10    11    33 |    64    69   146 |
jpl | jpl 2960 |     9     7    21 |    10    10    33 |    27    80    65 |
mit | mit 2976 |     7     4    16 |    10    11    32 |   130   110   172 |

Table 5.1681.3   GPS week: 1681   Day: 3   MJD: 56014.0

CENT| CLK EPO  |        BRUX       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3055 |     6     4    10 |     8    12    19 |    41    90    71 |
emr | emr 2960 |    10     9    26 |     7     9    25 |    50    97    79 |
esa | esa 2976 |     6     7    16 |     6    11    20 |    20    28    44 |
gfz | gfz 2960 |     7     8    17 |     8    14    22 |    42    88    72 |
grg | grg 2976 |    12    12    30 |     8    13    25 |    52    87    94 |
igr | igr 2976 |     5     5    12 |     7    12    20 |    41    77    67 |
igs | igs 2872 |    11     5    24 |     8    14    23 |    43    93    75 |
jpl | jpl 2960 |     7     7    17 |     7    11    22 |    43    95    79 |
mit | mit 2976 |     6     4    15 |     7    15    20 |    45    82    75 |

Table 5.1681.4   GPS week: 1681   Day: 4   MJD: 56015.0

CENT| CLK EPO  |        BRUX       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3064 |     4     4    15 |     6     7    23 |    10    25    18 |
emr | emr 2960 |     8     6    27 |     9     8    31 |    14    30    33 |
esa | esa 2976 |     6     6    19 |     6     6    24 |    12    23    25 |
gfz | gfz 2959 |     5     5    17 |     6     7    25 |    10    20    23 |
grg | grg 2976 |     8     8    21 |     7    11    32 |    15    20    24 |
igr | igr 2949 |     5     5    16 |     6     7    25 |    11    23    20 |
igs | igs 2770 |    11     7    33 |     7    14    25 |    11    18    25 |
jpl | jpl 2958 |     9     6    25 |     6     8    22 |    11    29    28 |
mit | mit 2976 |     6     5    21 |     7     9    27 |    12    21    27 |

Table 5.1681.5   GPS week: 1681   Day: 5   MJD: 56016.0

CENT| CLK EPO  |        BRUX       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3058 |     7     5    15 |     8     9    28 |     9    11    34 |
emr | emr 2960 |     8     5    23 |     9     9    31 |    12    11    21 |
esa | esa 2976 |     5     4    12 |     7     6    22 |    10    10    24 |
gfz | gfz 2959 |     5     7    15 |     6     7    26 |     8     7    18 |
grg | grg 2976 |     6     5    18 |     6     5    29 |     8     9    16 |
igr | igr 2975 |     4     4    11 |     6     8    22 |     8     8    23 |
igs | igs 2934 |     5     4    13 |     7     7    25 |     9     9    23 |
jpl | jpl 2960 |     7     7    19 |     7     9    26 |    11    11    23 |
mit | mit 2976 |     5     5    14 |     6    10    24 |    28    43    48 |

Table 5.1681.6   GPS week: 1681   Day: 6   MJD: 56017.0

CENT| CLK EPO  |        BRUX       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3052 |     6     5    10 |     6     6    21 |    21    30    34 |
emr | emr 2964 |     8     6    23 |     8     6    27 |    17    44    38 |
esa | esa 2976 |     5     4    13 |     5     5    24 |    14    15    24 |
gfz | gfz 2959 |     5     6    12 |     6     7    24 |    17    23    31 |
grg | grg 2975 |     6     5    10 |     5     7    29 |    29    30    48 |
igr | igr 2960 |     6     6    14 |     5     7    23 |    15    24    28 |
igs | igs 2937 |     5     4    11 |     6     6    23 |    17    22    33 |
jpl | jpl 2964 |     7     7    19 |     6     6    24 |    14    33    37 |
mit | mit 2976 |     5     4    15 |     5     7    27 |    19    28    39 |


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    : 10-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 6.1681   GPS week: 1681   MJD: 56011.500-56017.500

                                                         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 |       8     -17      92      94     -2 |       5     25
            |      25      28      98      67      6 |       3
emr   uuuuu |      21      31     -89     225     -5 |      64     69
            |      23      17      76     175      4 |       4
esa   uuuuu |       7     -28    -111     -79      3 |      12     29
            |      13      21      59      49      4 |       2
gfz   uuuuu |     -51      27     128      -8      0 |       0     25
            |      22      10      72     105      5 |       2
grg   uuuux |      27      25      62     -14      9 |     -24     47
            |      19      19      52      61     16 |       6
igr   xxxxx |     -30       9      24      28      2 |     -10     27
            |      22      24      19      73      7 |       3
irf   xxxxx |       3      -2      23       5     -2 |      -2     21
            |       5       4      29      29      3 |       1
jpl   uuuuu |      21      -5     125      51      2 |      47     53
            |      31      33      78      65      7 |       2
mit   uuuuu |      -4      -9     -45      23      5 |      11     27
            |      15      14     108      54      3 |       3
ngs   uuuuu |     -36      -1     155     -11     -4 |       4     21
            |      42      48      59      79      3 |       1
sio   uuuuu |      70      14    -255     -27     -8 |      66     71
            |      26      23      89      72      5 |       5


Table 7.1681.0   GPS week: 1681   Day: 0   MJD: 56011.500

                                                         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 |     -30     -21     104      49     -9 |       9     30
emr   uuuuu |      -9      14    -214     106     -6 |      70     76
esa   uuuuu |      12     -28    -168     -98      9 |      11     33
gfz   uuuuu |     -24      23     165     -36     -5 |       2     30
grg   uuuux |      32       7      -2     -74     18 |     -17     49
igr   xxxxx |     -44     -20      24     -79     -5 |      -6     30
irf   xxxxx |      -2      -8      45     -15      3 |      -2     24
jpl   uuuuu |       5     -57      76      64     -8 |      50     57
mit   uuuuu |     -25     -32     102      55      1 |      10     31
ngs   uuuuu |      -7      89     112      46      2 |       5     24
sio   uuuuu |      25     -30    -156      39    -16 |      75     81

Table 7.1681.1   GPS week: 1681   Day: 1   MJD: 56012.500

                                                         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     -37     158     117     -9 |       7     30
emr   uuuuu |       5       4    -119     144    -12 |      67     74
esa   uuuuu |      23      -7    -187    -134      4 |      11     33
gfz   uuuuu |     -55      24     100      38     -2 |       1     30
grg   uuuux |      49      16      97      74     14 |     -18     49
igr   xxxxx |     -14     -20      -2     -37     -6 |      -8     31
irf   xxxxx |       4      -2      44      24      1 |      -2     24
jpl   uuuuu |      29     -13     134      29     -3 |      47     55
mit   uuuuu |     -18      -3      59      55      4 |       9     31
ngs   uuuuu |     -45     -14     110       5      0 |       4     24
sio   uuuuu |      53      12    -145     -52    -14 |      71     78

Table 7.1681.2   GPS week: 1681   Day: 2   MJD: 56013.500

                                                         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 |       8      -8     189     189     -4 |       5     29
emr   uuuuu |      20      44     -57     130     -2 |      64     71
esa   uuuuu |      21     -17     -82     -18      3 |      10     33
gfz   uuuuu |     -23      27      80      82      3 |      -1     29
grg   uuuux |      33      47      -9     -36     11 |     -20     49
igr   xxxxx |     -13       2      60     -13      1 |     -11     31
irf   xxxxx |      10      -2      41      36     -6 |      -2     24
jpl   uuuuu |      31     -16      47      -8      2 |      45     53
mit   uuuuu |       0      -5      22      38      7 |       8     30
ngs   uuuuu |     -98     -29     139    -147     -8 |       4     24
sio   uuuuu |      73      11    -211      54     -8 |      67     74

Table 7.1681.3   GPS week: 1681   Day: 3   MJD: 56014.500

                                                         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 |      29     -22     -83     124      0 |       2     26
emr   uuuuu |      14      28     -37      62     -5 |      60     66
esa   uuuuu |       4     -12      -9     -79      0 |       8     30
gfz   uuuuu |     -49      16      83      70     -1 |      -3     27
grg   uuuux |      34       2     119      17     16 |     -26     45
igr   xxxxx |      -5      25      24      78      7 |     -13     30
irf   xxxxx |       6       4       4      45     -4 |      -3     23
jpl   uuuuu |      21      33     119     -23      0 |      45     53
mit   uuuuu |       5      16     -99      83     10 |       7     29
ngs   uuuuu |     -48     -68      92     -75     -5 |       2     23
sio   uuuuu |      88      48    -372      38     -6 |      63     68

Table 7.1681.4   GPS week: 1681   Day: 4   MJD: 56015.500

                                                         AC LOD  AC LOD
CENT  FLAG  |   Xpole   Ypole     Xrt     Yrt    LOD |    BIAS  BIAS RMS
            |   [uas]   [uas]   [uas/d] [uas/d]  [us]|    [us]    [us]
------------+----------------------------------------+------------------
cod   xxxxx |      40      41     184       8      0 |       4     24
emr   uuuuu |      15      49     -23     182     -1 |      62     67
esa   uuuuu |       0     -71    -104     -97      2 |      12     28
gfz   uuuuu |     -59      43      69      85     -3 |       0     24
grg   uuuux |      34      50      98     -34    -13 |     -25     45
igr   xxxxx |     -21      47      18      86      0 |     -10     26
irf   xxxxx |       3      -1      18     -10     -2 |      -1     21
jpl   uuuuu |      46      28     126     138     10 |      45     53
mit   uuuuu |       9     -10    -131     -16      7 |      11     27
ngs   uuuuu |     -56       0     207     -18     -3 |       4     21
sio   uuuuu |      87      16    -253    -115     -4 |      64     69

Table 7.1681.5   GPS week: 1681   Day: 5   MJD: 56016.500

                                                         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 |     -19     -28      55     143      6 |       7     23
emr   uuuuu |      58      40    -158     482     -3 |      65     69
esa   uuuuu |      -6     -28     -91    -118      7 |      16     27
gfz   uuuuu |     -84      38     123    -117      0 |       2     22
grg   uuuux |      -8      21      92     -89    -11 |     -27     46
igr   xxxxx |     -57      17      16     118      6 |      -8     24
irf   xxxxx |       0      -2      42      -8     -4 |       1     18
jpl   uuuuu |      55     -30      84     134      6 |      49     55
mit   uuuuu |      14     -14     -74      26      4 |      16     26
ngs   uuuuu |     -34      17     256      90     -6 |       6     19
sio   uuuuu |     101      19    -325     -36     -7 |      66     70

Table 7.1681.6   GPS week: 1681   Day: 6   MJD: 56017.500

                                                         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     -43      39      26      2 |       3     12
emr   uuuuu |      44      38     -14     468     -8 |      60     61
esa   uuuuu |      -9     -36    -134      -5     -4 |      12     19
gfz   uuuuu |     -66      21     275    -177      9 |      -2     12
grg   uuuux |      12      34      41      46     31 |     -34     44
igr   xxxxx |     -55      10      29      45     12 |     -12     17
irf   xxxxx |      -3      -4     -31     -33     -5 |      -2     11
jpl   uuuuu |     -40      22     288      21     10 |      45     47
mit   uuuuu |     -13     -15    -194     -78      3 |      13     19
ngs   uuuuu |      37      -3     168      26     -6 |       3     10
sio   uuuuu |      63      19    -325    -115     -4 |      60     61



More information about the IGSREPORT mailing list