[IGSREPORT-20777] Wk 1683 IGS Final Orbits

IGS ACC igs.acc at noaa.gov
Thu Apr 26 08:04:28 PDT 2012


Author:  AC Coordinator / NOAA NGS

sum-file Version 2.0
Final IGS Orbit Combination - Week 1683   (Apr 08, 2012 - Apr 14, 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:

igs1683[0-6].sp3  IGS GPS ephemeris files in SP3 format.
igs1683[0-6].clk  IGS GPS satellite and station clocks in clock RINEX format.
igs1683[0-6].cls  IGS GPS clock combination summary report.
igs16837.erp      Earth Rotation Parameters (ERP) and their rates as well as
                  Universal Time (UT1-UTC) and Length Of Day (LOD) associated 
                  with IGS ephemerides.
igs16837.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  |  COD   | 8 8 CHUR CHUR KOUC
                0  |  ESA   | AREQ AREQ NNOR UNSA
                0  |  GFZ   | 8 9 AUCK BRFT BRMU COCO MAS1 PDEL REUN STHL STJO
                0  |  GFZ   | SUTM WTZR
                0  |  GRG   | AMC2
                0  |  MIT   | 11 19 11 19 CAS1
                1  |  COD   | 8 8 WILL
                1  |  ESA   | AREQ AREQ
                1  |  GFZ   | BRFT DGAR TWTF
                1  |  GRG   | AMC2
                1  |  JPL   | 8
                1  |  MIT   | DAV1
                2  |  COD   | 8 8 WILL
                2  |  ESA   | AREQ AREQ
                2  |  GFZ   | BRFT SCH2
                2  |  GRG   | AMC2
                2  |  JPL   | 1 BRAZ
                2  |  MIT   | 32 32
                3  |  COD   | 30 30
                3  |  EMR   | ONSA
                3  |  ESA   | AREQ ONSA AREQ
                3  |  GFZ   | 8 MCM4 ONSA TIDB WTZR
                3  |  GRG   | AMC2
                3  |  JPL   | 30
                3  |  MIT   | 1 11 1 11 DAV1 MAW1 ONSA
                4  |  COD   | 8 8
                4  |  ESA   | AREQ AREQ NNOR
                4  |  GRG   | AMC2
                4  |  MIT   | 1 17 1 14 17 CAS1 DAV1 MAW1
                5  |  COD   | 8 8
                5  |  ESA   | AREQ AREQ UNSA
                5  |  GFZ   | 8 MDO1
                5  |  GRG   | AMC2
                5  |  MIT   | 3 3 DAV1
                6  |  COD   | 8 8 HNPT WILL
                6  |  EMR   | MCM4
                6  |  ESA   | AREQ CAS1 AREQ NNOR
                6  |  GFZ   | 8 DAEJ
                6  |  GRG   | AMC2
                6  |  JPL   | CAS1
                6  |  MIT   | MAW1

 5. The following table lists all maneuvered satellites for this week.
    The solutions from COD and ESA, which modeled the maneuver, are used
    that day for combination. An associated accuracy code of 0 (unknown) 
    is given if only one AC is left (no redundancy). For the long arc  
    evaluation the arc is split into two parts at the given maneuver epoch.
    
               PRN |    Date    | Ref. NANU
               ----+------------+----------
               G15 | 2012_04_12 | 2012022 

 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 G10 |    |    |    |  1 |    |    |    |

 7. 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.
    

 8. 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  |     .6     .6    -.3     -12    -17     18     .21
       EMR  |    -.1  -13.0    9.4       6     17      2     .63
       ESA  |    1.5   -6.0   12.9     -61    -38    145     .17
       GFZ  |    -.3     .4    -.4     -44     14    -14     .25
       GRG  |    3.4   -7.8   10.8     -38     34    -23     .36
       JPL  |   -2.7   -4.3    2.2      -9    -15     61     .51
       MIT  |    7.2   -8.0   16.8     -49     35    -64     .44
       NGS  |    7.2   -6.9   17.7     -88    -15     36     .52
       SIO  |   -1.6   -5.8    5.3     -86    -31     95     .84


 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 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 1.1683.a). It also displays the computed satellite
position sigmas for the combined orbits (table 1.1683.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 2.1683.[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 3.1683.[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 5.1683.0-6).

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 1683 summary.                       (Apr 08, 2012 - Apr 14, 2012)

Table 1.1683.a   GPS week: 1683   MJD: 56025.000-56031.000

         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  264|    1     0     0   -56    19     8  -.31    9    8 |    -387    -713     18     74
        |    0     0     1     8    15    24   .02           |     405    1034
emr   93|   -1     0     2   -29   -48   -36   .43   19   19 |    5682    -159     17    110
        |    0     1     0    28    15    12   .02           |    1528    1078
esa  174|    0     0    -1   -12    82    58   .26    8    8 |   -1254    1562     27    187
        |    0     0     1    12    10    10   .03           |    1098    1505
gfz  192|    0     1    -3    -3   -36   -35  -.21   12   11 |      44     289     31    133
        |    1     1     1    40    33    12   .05           |     454     607
grg  124|    1     0     3   -16   -68   -20   .63   15   15 |     -23      95     49    214
        |    1     0     2     8    13    12   .03           |     286     396
igr  n/a|    0     0    -4   -64     2   -32  -.07    5    5 |    3958    -652     22     93
        |    0     0     0    12    10    10   .03           |    2487    1132
jpl  138|    0     0    -7   -49    21    13   .53   16   15 |    2697    -173     22     82
        |    2     1     2     6     5    43   .01           |    1456     964
mit  276|    0    -2     0    18   -87   -53  -.37   12   11 |    -231      76     19    130
        |    1     0     0    24    19    19   .02           |     229     214
ngs  224|    0     0     4    94    -4   -18  -.25   11   10 |  -26713   90142   2057   3804
        |    0     1     2    26    25    14   .06           |   68030  240358
sio  243|   -1     1     3    95    46    77  -.29   21   21 |     ---     ---    ---    ---
        |    1     1     1    19    15    28   .02           |     ---     ---


Table 1.1683.b   GPS week : 1683   MJD: 56025.000-56031.000   

         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    4    4    4    4 |
   2  |    5    5    5    5    5    5    5 |
   3  |    4    4    3    4    4    4    3 |
   4  |    4    4    4    4    5    4    4 |
   5  |    5    5    5    5    5    5    5 |
   6  |    4    3    3    3    3    3    3 |
   7  |    5    4    4    4    5    5    5 |
   8  |    5    5    5    5    6    5    6 |
   9  |    6    5    4    4    4    4    4 |
  10  |    4    4    4    7    4    4    4 |
  11  |    5    4    4    4    4    4    4 |
  12  |    6    5    5    5    5    5    5 |
  13  |    5    4    5    4    5    4    5 |
  14  |    5    5    4    5    5    5    5 |
  15  |    6    6    6    6    0    6    6 |
  16  |    5    5    5    5    5    4    5 |
  17  |    4    4    4    4    5    5    4 |
  18  |    5    5    4    4    5    5    5 |
  19  |    5    5    5    5    5    5    5 |
  20  |    5    4    4    5    5    5    5 |
  21  |    4    4    4    4    5    4    5 |
  22  |    5    5    4    4    4    4    4 |
  23  |    5    4    4    4    4    4    5 |
  24  |    0    0    0    0    0    0    0 |
  25  |    4    4    4    4    4    4    4 |
  26  |    4    4    4    4    4    4    4 |
  27  |    5    4    4    4    4    4    4 |
  28  |    5    5    4    5    5    6    5 |
  29  |    5    4    4    4    5    4    4 |
  30  |    5    4    4    4    4    4    4 |
  31  |    5    4    4    4    5    5    5 |
  32  |    4    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 2.1683.0   GPS week: 1683   Day: 0   MJD: 56025.000                            

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  264|    1     0     0   -49    46    -7  -.33    9    8 |    -433     117     14     73
        |                     20   -16                       |
emr   93|    0     1     1   -70   -63   -18   .44   19   19 |    7594    -454     15    102
        |                    -41     7                       |
esa  174|    0     0     0   -17    71    54   .24    9    8 |    -858    1910     25    168
        |                     20    -8                       |
gfz  192|   -2     0    -4    44   -43   -11  -.29   13   13 |     872    -598     34    197
        |                    -30    22                       |
grg  124|    0     1     4   -18   -73   -38   .61   16   15 |    -169     371     45    222
        |                     -1   -27                       |
igr  n/a|    0     0    -3   -68     1   -27  -.12    6    6 |    7504   -1093     20     98
        |                     -3    26                       |
jpl  138|    1     0    -6   -55    19    -8   .55   17   16 |    4879    -638     19     75
        |                    -58    -8                       |
mit  276|    0    -1     1    53   -95   -46  -.36   13   12 |    -311     134     20    122
        |                    -11    15                       |
ngs  224|    1    -2     4    55    -4   -18  -.19   12   12 | -180961  635221   2009   4040
        |                     52    75                       |
sio  243|    0     3     0   111    47   105  -.29   23   22 |     ---     ---    ---    ---
        |                   -137   -78                       |

Table 2.1683.1   GPS week: 1683   Day: 1   MJD: 56026.000                            

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  264|    1     0     1   -69    29    32  -.32    9    9 |      83   -1655     19     81
        |                     52   -21                       |
emr   93|   -1    -2     3   -51   -52   -51   .42   17   17 |    6708     668     18    113
        |                    -81    21                       |
esa  174|   -1     0    -2   -12    94    39   .28    8    8 |     359     217     29    184
        |                     13   -27                       |
gfz  192|    0     0    -4    60   -50   -37  -.23   12   11 |    -561    1237     33    141
        |                    -13     5                       |
grg  124|    0     1     5   -16   -69   -16   .62   17   16 |     114     -23     48    221
        |                     10   -13                       |
igr  n/a|    0     0    -5   -58    21   -44  -.05    5    5 |    6084     -71     23     86
        |                    -17    10                       |
jpl  138|    4     1    -3   -59    30    33   .52   15   15 |    3825     254     24     85
        |                     20    -9                       |
mit  276|   -1    -2     0    25  -113   -43  -.35   11   10 |     -45    -243     19    143
        |                    -18    29                       |
ngs  224|    0     0     1    63    19   -31  -.17   10    9 |      54   -1307   1822   3749
        |                     14    -2                       |
sio  243|   -2     2     3    87    27    84  -.31   21   21 |     ---     ---    ---    ---
        |                   -122   -49                       |

Table 2.1683.2   GPS week: 1683   Day: 2   MJD: 56027.000                            

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  264|    1     0    -1   -53    12   -29  -.32    8    8 |   -1222    1096     16     75
        |                     27     4                       |
emr   93|   -1     0     1   -39   -45   -37   .42   19   19 |    6852    -882     18    109
        |                    -71   -12                       |
esa  174|    0     0     1    -2    94    68   .29    8    8 |   -2103    1659     25    196
        |                     11   -17                       |
gfz  192|    0     2    -5   -13    21   -31  -.22   12   12 |    -209     -46     33    146
        |                     -1   -10                       |
grg  124|    2     0     7    -8   -58   -29   .62   17   16 |    -535     433     51    222
        |                    -16     2                       |
igr  n/a|    1     1    -5   -50    -3   -22  -.04    5    5 |    5377   -1541     23     96
        |                    -11    25                       |
jpl  138|    0    -1    -5   -48    12    94   .53   15   15 |    3471    -946     24     79
        |                     17   -27                       |
mit  276|    0    -1     0    15   -88   -62  -.35   10    9 |    -492     406     18    120
        |                     -7    15                       |
ngs  224|    0    -1     1    98   -57   -33  -.20   11   10 |    -998     555   2462   3770
        |                     -5    87                       |
sio  243|   -2     2     4   100    52    69  -.30   20   23 |     ---     ---    ---    ---
        |                   -131   -70                       |

Table 2.1683.3   GPS week: 1683   Day: 3   MJD: 56028.000                            

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  264|    2     0     0   -62    21    41  -.27    8    8 |    -289   -1815     23     77
        |                     42   -11                       |
emr   93|   -3     0     1   -33   -65   -48   .47   19   19 |    6193   -1919     16     93
        |                    -69    21                       |
esa  174|    0     0     0     6    67    58   .29    7    7 |   -1889    1992     27    166
        |                     -7   -22                       |
gfz  192|    0     1    -2    -8     0   -41  -.17   11   11 |     114     308     32    145
        |                     -9    17                       |
grg  124|    3     0     2   -24   -42   -25   .61   16   16 |     248    -434     50    200
        |                    -21    -8                       |
igr  n/a|    1     0    -3   -86     7   -18  -.04    5    5 |    4123   -2452     24    105
        |                     -5    23                       |
jpl  138|   -2     2   -10   -43    20    23   .55   16   16 |    2765   -1655     24     88
        |                      0    26                       |
mit  276|    0    -2     0     5   -98   -86  -.35   11   10 |    -152     -19     20    143
        |                      8    21                       |
ngs  224|    0    -1     4    90    -7     3  -.32   11   10 |    -390   -1670   2023   3440
        |                     19    35                       |
sio  243|    0     0     3    94    22    22  -.27   22   20 |     ---     ---    ---    ---
        |                   -108   -67                       |

Table 2.1683.4   GPS week: 1683   Day: 4   MJD: 56029.000                            

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  264|    1     0     0   -52    11    13  -.32    9    9 |    -365   -1154     17     66
        |                     50    21                       |
emr   93|   -1    -2     0    14   -49   -43   .39   19   19 |    4593    -379     18    127
        |                   -100    12                       |
esa  174|    0     0     0    -8    91    57   .21    8    8 |   -2779    4349     29    204
        |                     -7   -15                       |
gfz  192|    0     2    -1   -45   -66   -43  -.24   12   12 |     299     522     32    105
        |                     17    19                       |
grg  124|    1     0     3    -4   -77    -2   .62   13   14 |    -139     404     62    199
        |                    -26     4                       |
igr  n/a|    0     0    -3   -57     1   -31  -.10    5    5 |    2058    -572     23     91
        |                     20    19                       |
jpl  138|    0     0   -10   -48    25     0   .51   16   15 |    1404     -58     24     91
        |                      2    35                       |
mit  276|    1    -2    -1    12   -86   -66  -.40   12   11 |     -49      61     19    131
        |                      4    17                       |
ngs  224|    0     1     7   122     0   -11  -.29   13   12 |    -377   -1244   2130   3885
        |                     21    10                       |
sio  243|   -1     0     3    85    60    68  -.27   21   22 |     ---     ---    ---    ---
        |                    -97   -81                       |

Table 2.1683.5   GPS week: 1683   Day: 5   MJD: 56030.000                            

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  264|    0     0     0   -45    20    15  -.33    9    9 |    -335   -1069     20     76
        |                     50    -3                       |
emr   93|   -1     0     2    -4   -20   -29   .43   18   18 |    3559     618     17    122
        |                    -96   -14                       |
esa  174|   -1     1    -3   -28    77    69   .26    9    9 |    -240    -310     30    205
        |                      5   -27                       |
gfz  192|    0     0    -2   -19   -55   -49  -.17   10    9 |     -38    -127     29    106
        |                    -19    17                       |
grg  124|    1     0     0   -27   -78   -12   .67   13   13 |     298    -445     47    208
        |                    -13   -10                       |
igr  n/a|    0     0    -4   -73     2   -43  -.07    5    5 |    1090     364     21     93
        |                     10    45                       |
jpl  138|   -1     0    -8   -40    19   -42   .52   15   15 |     858     817     23     83
        |                     31  -164                       |
mit  276|    3    -2     0   -22   -55   -40  -.38   15   12 |    -571     -63     20    136
        |                     19    14                       |
ngs  224|    0     0     7   110     4    -9  -.30    9    8 |   -3978    -299   2191   4025
        |                    -44    46                       |
sio  243|    0     0     3    62    62    87  -.28   21   21 |     ---     ---    ---    ---
        |                    -95   -70                       |

Table 2.1683.6   GPS week: 1683   Day: 6   MJD: 56031.000                            

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  264|    0    -1    -1   -65    -3    -4  -.28    9    9 |    -151    -514     22     73
        |                     63    -9                       |
emr   93|   -2     2     2   -24   -38   -25   .42   19   19 |    4275    1231     18    108
        |                    -97    -5                       |
esa  174|    0     1    -2   -26    79    59   .24    8    8 |   -1269    1118     27    188
        |                     13   -13                       |
gfz  192|    0     0    -3   -41   -58   -36  -.16   11   10 |    -168     727     26     91
        |                     15    15                       |
grg  124|    2     0     4   -15   -77   -15   .67   15   15 |      16     361     43    227
        |                     -7   -18                       |
igr  n/a|    1     0    -4   -54   -10   -39  -.08    5    5 |    1475     796     21     87
        |                      0    49                       |
jpl  138|    1     2    -9   -48    25    -2   .52   16   16 |    1681    1010     22     75
        |                      0     7                       |
mit  276|    1    -2     0    36   -70   -29  -.39   14   13 |      -2     260     20    115
        |                     -5    16                       |
ngs  224|    0     0     5   119    13   -32  -.28    9    8 |    -347    -260   1763   3724
        |                    -16    70                       |
sio  243|   -2     0     3   124    50   103  -.32   22   22 |     ---     ---    ---    ---
        |                   -113   -74                       |

       
       
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 3.1683.0   GPS week: 1683   Day: 0   MJD: 56025.000                            

        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
------+--------------------------------------------------------+---------------------------------------------------------
   1  |    6   15   10   14   17    6   14   16   10   13    4 |    39   41   45   46   46   45   47   38   42   44    41
   2  |    7   24    6   14   13    6   24   12   13   13    5 |    23   33   19   20   23   20   32   24   24   24    21
   3  |    8   12    7   11   16    4    9   12   10   20    4 |    14   21   17   17   25   15   17   22   18   19    16
   4  |    9   18    6   15   13    5   12   11   11   19    4 |    13   25   15   20   16   13   20   15   15   18    12
   5  |    7   19    9   15   21    5   16   13   10   15    4 |    14   25   19   18   25   13   24   19   15   20    14
   6  |    6   13    8   10   14    4    7   11   10   21    3 |    17   20   19   17   27   17   20   24   18   22    19
   7E |   10   19    9   12   14    4   16   10   14   14    4 |    37   40   38   39   39   35   39   36   35   33    37
   8E |   13   17   10   11   17   11   21   15   17   19    5 |    48   53   47   42   52   45   56   43   42   48    44
   9E |   16   24    8   14   19    7   24   16   14   35    6 |    55   70   61   60   72   60   71   51   56   54    59
  10  |    9   15    8   17   13    4   11   14   13   15    4 |    20   25   26   33   30   24   29   28   23   27    23
  11  |    6   14   10   12   20    5   10   15   11   21    4 |    14   29   17   18   34   12   27   16   15   19    16
  12  |   14   24    8   10   16    6   22   19   14   24    5 |    24   31   24   23   30   18   28   21   19   18    20
  13  |    6   21   11   13   18    6   15    9   14   17    4 |    25   36   30   36   36   29   38   30   24   23    28
  14  |   10   20   12   15   15    8   15   14   14   31    5 |    25   31   33   36   35   30   31   32   21   34    27
  15  |    7   27   12   13   15    5   22   12   11   51    6 |    15   28   16   16   24   14   24   13   14   44    14
  16  |    8   24    7   14   15    6   21   14   12   19    5 |    12   29   19   20   26   16   25   20   14   22    15
  17  |    8   14    8   14   10    6   17   10    8   27    4 |    21   26   26   29   24   23   29   24   22   20    21
  18  |    7   27   10   14   18    6   20    9   10   21    5 |    17   36   18   15   27   13   30   19   17   25    17
  19  |    9   18   14   12   15    7   15   17   10   33    5 |    19   26   22   20   22   19   28   22   24   25    20
  20  |    8   18    5   14   19    5   15   12    9   18    4 |    18   29   24   25   33   18   28   24   19   20    20
  21  |    7   20    9   14   15    5   11   11   12   16    4 |    22   28   22   23   26   23   26   18   18   25    20
  22  |    5   17    9   12   22    6   17   13    9   17    4 |    16   25   17   18   26   13   22   19   16   21    14
  23  |    6   20    8   15   14    5   12   12   14   20    4 |    22   34   26   35   31   25   32   28   21   22    25
 X24  |    6  ---  ---  ---  ---   40  ---  ---  ---  ---    0 |    24  ---  ---  ---  ---   26  ---  ---  ---  ---    25
  25  |    5   13    4    9   11    5   14   11   15   20    3 |    19   28   24   20   31   20   33   25   21   23    22
  26  |    8   13    8   13   13    4   13    8   10   13    3 |    13   19   20   26   25   16   20   18   17   16    17
  27  |    9   19    8   14   17    6   19   11   12   17    4 |    16   25   19   23   26   16   28   17   22   17    17
  28  |    8   18    7   13   17    5   18    9    9   27    4 |    21   28   25   30   32   23   26   23   26   21    22
  29  |    7   17   10   13   13    6   20    8   12   25    4 |    18   26   21   20   22   19   29   20   21   22    19
  30  |    9   17    7   11   16    7   16   14   15   32    5 |    11   27   17   17   22   12   22   21   15   31    15
  31E |    9   15    8    9   18    6   18   15   18   25    5 |    18   22   22   21   22   17   24   23   22   34    18
  32  |    9   14    6   10   13    4   13   10    7   17    3 |    15   23   20   21   23   17   27   21   16   24    17
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |    9   19    9   13   16    6   17   13   12   23      |T   21   30   24   25   30   22   30   24   22   26    22
 WRMS |    8   19    8   13   15    6   16   12   12   22      |NE  18   27   22   23   27   19   27   22   19   23    19
 MEDI |    8   18    8   13   15    6   16   12   12   20      |MD  18   28   22   21   26   18   28   22   21   23    20

Table 3.1683.1   GPS week: 1683   Day: 1   MJD: 56026.000                            

        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
------+--------------------------------------------------------+---------------------------------------------------------
   1  |   11   15    9   12   17    5   15   14   10   13    4 |    30   31   34   33   36   31   36   30   33   32    30
   2  |    9   20    9   14   14    4   20   11   10   16    4 |    21   29   19   21   19   20   27   22   24   23    19
   3  |    7   13    5   11   17    4   11    8   11   18    3 |    12   18   16   14   19   13   16   16   13   18    13
   4  |   11   15    6   12   14    5   10    9   12   19    4 |    14   23   18   17   14   17   19   17   20   21    13
   5  |    8   21    9   18   22    5   17   17   11   15    5 |    13   25   17   18   24   15   22   20   16   20    13
   6  |    7   12    6    9   14    4   10    9    8   17    3 |    14   17   15   13   19   13   16   19   17   20    15
   7E |   12   14    8   12   13    6   14    6   15    9    4 |    28   34   32   33   37   32   35   30   37   31    31
   8E |   10   17    8   10   16    8   20   15   12   19    4 |    40   47   41   43   45   39   48   42   39   44    41
   9  |   12   16    9   13   16    7   20    9   10   29    5 |    28   45   40   43   42   38   45   35   38   43    36
  10  |   10   12    7   11   16    3   10   12    9   15    4 |    19   26   24   23   24   23   25   25   24   25    21
  11  |    7   13    6   11   20    6   11   12   11   19    4 |    14   25   16   15   31   13   25   18   20   20    15
  12  |   15   20    9   11   18    4   17   11    8   21    4 |    18   26   19   16   26   15   24   18   15   14    15
  13  |    5   18   10   12   20    4   13   11   12   15    4 |    20   35   25   25   38   24   34   24   21   22    22
  14  |    8   20   10   14   14    5   15    9   12   27    4 |    18   28   29   29   27   25   26   25   21   29    22
  15  |    8   27   11   12   16    5   21   11    8   49    6 |    13   28   14   14   20   13   22   15   12   41    12
  16  |    9   22    8    9   15    5   18   11   10   17    4 |    13   25   14   12   20   12   20   15   12   16    12
  17  |    8   12    9   13   12    4   16    9    8   24    4 |    17   24   21   20   21   20   25   22   16   20    17
  18  |    8   23    9   12   21    5   17   10   10   19    4 |    15   30   18   16   27   17   24   19   19   23    16
  19  |    9   18    7    9   17    5   16   11   11   32    4 |    12   23   18   14   16   13   22   14   17   18    14
  20  |    6   18    9   12   19    5   14   13    9   13    4 |    13   25   22   19   30   18   22   22   17   18    16
  21  |    8   18   10   11   16    3   11   10   11   17    4 |    17   27   20   19   27   19   24   18   17   23    17
  22  |    7   21   11   12   21    5   14   11    9   15    4 |    15   28   17   17   25   16   19   20   19   22    15
  23  |    7   18    9   13   18    4   11   11   12   18    4 |    17   33   23   26   28   22   29   24   21   20    21
 X24  |    7  ---  ---  ---  ---   22  ---  ---  ---  ---    0 |    16  ---  ---  ---  ---   13  ---  ---  ---  ---    18
  25  |    9   12    6   12   13    3   13   13    9   17    4 |    26   38   30   25   37   28   40   22   27   28    26
  26  |   11   10    7   14   14    5   11   10    9   13    3 |    14   19   17   21   18   18   18   17   22   14    15
  27  |    9   18    8   12   13    5   18    9    8   20    4 |    12   24   17   19   24   15   24   17   16   21    15
  28  |    8   19    9   11   18    6   16    8    9   24    4 |    17   29   25   20   29   19   26   19   21   21    18
  29  |    5   12    8   10   12    4   18    7   11   26    4 |    15   25   20   18   18   17   26   17   21   22    17
  30  |    7   14    7    9   15    4   11   12    8   31    4 |    10   23   10   14   15    9   18   18    9   32    11
  31E |    7   17    8   11   18    6   15   11    8   16    4 |    21   30   24   27   28   24   28   26   25   29    23
  32  |    8   15    8   13   15    4   15    7   10   16    4 |    12   24   20   17   20   15   24   18   17   22    15
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |    9   17    8   12   17    5   15   11   10   21      |T   17   27   21   21   25   19   26   21   20   24    18
 WRMS |    9   17    8   11   16    5   15   10    9   21      |NE  15   26   19   19   24   17   24   19   18   22    16
 MEDI |    8   17    8   12   16    5   15   11   10   18      |MD  15   26   20   19   25   17   24   19   20   22    16

Table 3.1683.2   GPS week: 1683   Day: 2   MJD: 56027.000                            

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

Table 3.1683.3   GPS week: 1683   Day: 3   MJD: 56028.000                            

        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
------+--------------------------------------------------------+---------------------------------------------------------
   1  |    7   17    7   10   15    5   13   12   10   13    4 |    42   45   45   41   46   43   48   39   44   43    42
   2  |    8   22    7   16   17    6   24   12   10   17    4 |    26   37   26   27   30   26   40   28   25   29    26
   3  |    6   10    5    9   15    4   11    9   13   17    3 |    15   18   17   15   18   15   17   17   14   16    14
   4  |    7   16    6   10   15    3   14   11   11   21    4 |    19   27   21   21   18   19   26   22   21   28    19
   5  |    6   21    7   17   21    5   14   21   13   19    5 |    20   30   20   26   28   18   26   19   22   24    19
   6  |    6   11    6    7   12    5    9    9   11   14    3 |    17   19   18   16   19   16   18   21   14   20    16
   7E |   11   15    9   11   17    6   14    5   12   12    4 |    33   37   36   34   39   31   39   35   37   28    34
   8E |   10   16    9   11   17    6   22   13   14   20    4 |    40   45   43   42   47   38   51   44   43   49    43
   9  |    7   17    9    6   14    5   18   10    8   22    4 |    21   28   23   22   29   20   32   21   19   29    21
  10  |   15   18    9   16   24   10   13   31    9   41    7 |    54   59   57   59   57   58   59   53   55   52    52
  11  |    7   13    5    9   20    4    9    9   11   18    3 |    19   30   22   19   34   20   30   24   21   27    21
  12  |    9   25    8    9   15    5   20    8   10   20    4 |    25   31   26   22   30   22   27   22   21   21    21
  13  |    7   19    9   12   19    4   14    7   10   19    4 |    31   42   31   32   39   30   39   33   30   33    31
  14  |    7   22    7   13   11    4   15    9   13   23    4 |    22   29   29   29   30   25   29   29   21   24    24
  15  |   11   26    9    9   19    5   20   10   14   47    6 |    17   28   17   17   24   14   26   17   19   46    16
  16  |    8   24    8   11   15    4   20    9   10   16    4 |    18   28   21   17   24   17   26   18   14   16    16
  17  |    8   14    7   17   11    3   18    9   10   22    4 |    21   28   24   29   23   22   29   27   25   25    23
  18  |    9   27    7   10   18    4   14    9    9   16    4 |    17   36   21   17   28   18   22   19   18   23    18
  19  |    8   18    7   10   14    6   15   10   16   30    4 |    21   28   23   20   22   20   29   20   25   18    20
  20  |   10   22   10   13   19    5   16   11   10   14    4 |    22   33   28   22   33   22   24   24   22   24    22
  21  |    7   20    5   10   16    5   14    8   10   20    4 |    23   32   23   22   30   24   31   23   19   27    22
  22  |    7   19    7   10   20    4   15   11   10   14    4 |    17   25   19   13   27   15   20   19   20   20    16
  23  |    6   19    5   12   17    3   12    7    9   19    3 |    29   38   29   32   31   27   34   31   27   29    28
 X24  |    6  ---  ---  ---  ---   41  ---  ---  ---  ---    0 |    24  ---  ---  ---  ---   31  ---  ---  ---  ---    25
  25  |    7   18    6   11   14    5   14   11    6   20    3 |    20   35   25   20   33   23   34   24   22   25    22
  26  |    9   12    6   12   17    3   12    9   11   12    3 |    26   26   25   29   25   23   27   24   22   23    24
  27  |    8   18    7    9   14    6   16    9    9   16    4 |    21   28   26   25   24   23   29   22   19   24    22
  28  |    9   19    8   13   19    4   18    9   11   22    4 |    21   27   24   25   31   20   26   25   23   25    22
  29  |    9   14    7   11   14    7   18    7    8   28    4 |    20   25   24   22   20   21   28   20   21   27    20
  30  |    7   15    7   10   14    5   13   10    7   29    4 |    22   30   20   23   22   20   25   23   21   32    21
  31E |    9   20    8   14   16    4   17    8    9   20    4 |    27   27   28   25   31   25   27   27   25   23    24
  32  |    8   19    4    9   14    8   18    9    9   14    3 |    19   24   23   17   22   20   26   25   22   23    20
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |    8   19    7   11   16    5   16   11   11   22      |T   24   31   26   25   29   23   30   25   24   27    23
 WRMS |    8   19    7   11   16    5   16   10   10   20      |NE  23   31   25   24   28   23   29   24   23   26    22
 MEDI |    8   18    7   11   16    5   15    9   10   19      |MD  21   29   24   22   29   22   28   24   22   25    22

Table 3.1683.4   GPS week: 1683   Day: 4   MJD: 56029.000                            

        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
------+--------------------------------------------------------+---------------------------------------------------------
   1  |    7   19    8   11   15    6   14   11   10   14    4 |    34   39   39   35   43   36   42   33   38   37    36
   2  |    9   21    7   16   14    3   24   11   15   16    5 |    25   31   21   19   28   22   34   24   19   25    22
   3  |    7   12    7    7   12    4   11    9   11   17    3 |    13   18   18   17   20   15   18   16   19   12    15
   4  |   10   15    7   14   10    4   12   16   11   22    4 |     9   23   15   13   14   10   18   18   16   25    12
   5  |    6   19    6   19   16    6   18   20   12   17    5 |    18   25   21   20   28   16   25   23   22   21    18
   6  |    5   13    6    6    9    4   10    7    8   15    3 |    14   20   17   18   21   16   18   15   22   12    16
   7  |   18   17    8   14   10    7   15    9   13   23    5 |    27   37   32   34   39   32   37   35   37   39    33
   8E |   11   21   10   11   19    6   22   15   13   26    5 |    22   38   25   23   30   21   39   19   22   34    23
   9  |   10   17    9    8    9    5   15   13   11   20    4 |    16   27   21   20   19   17   30   19   21   27    18
  10  |   11   13    6   12   11    3   13   13   15   19    4 |    20   28   22   24   23   21   23   25   28   30    21
  11  |    7   17    8    9   16    4   12    9   13   19    4 |    17   29   19   18   35   16   28   17   24   19    19
  12  |   16   25   10   10   16    4   22   10   10   20    5 |    23   29   22   20   31   17   25   18   23   18    19
  13  |    6   20    8   13   13    4   14    9   18   20    4 |    19   35   23   23   37   19   34   21   19   21    22
  14  |    8   25   10   15   11    4   17    9   13   24    4 |    22   32   29   31   28   25   30   30   23   24    25
 X15  |    6  ---  ---  ---  ---   17  ---  ---  ---  ---    0 |     8  ---  ---  ---  ---   18  ---  ---  ---  ---    11
  16  |    8   24   10   13   12    3   19   11   11   19    4 |    13   26   16   17   24   13   22   15   13   11    13
  17  |   10   15    6   15    8    5   17   14   20   26    5 |    17   24   21   20   21   18   24   22   26   23    18
  18  |    9   25    9    9   14    6   14   11   11   16    4 |    14   32   22   17   27   14   23   19   21   17    18
  19  |    8   20    8   11   12    5   15   13   10   28    4 |    16   27   22   20   21   17   28   21   20   19    19
  20  |    7   16    8   14   12    4   12   19    8   14    4 |    15   24   21   18   31   19   22   23   22   16    19
  21  |    8   22    8   11   17    4   16    9   11   25    4 |    18   31   19   17   29   18   29   20   20   28    19
  22  |    8   20    7   10   18    4   14   12   11   13    4 |    16   24   18   16   26   15   23   22   16   17    16
  23  |    5   20    7   13   12    4   12    9   13   20    4 |    18   31   22   22   28   18   27   21   19   20    20
 X24  |    6  ---  ---  ---  ---   33  ---  ---  ---  ---    0 |    18  ---  ---  ---  ---   39  ---  ---  ---  ---    20
  25  |    8   18    7   10   12    3   12   13   11   16    4 |    15   31   25   17   33   17   31   18   19   19    19
  26  |   10    9    6    8   13    4   11   12   16   11    3 |    14   16   16   18   19   13   18   17   13   15    14
  27  |   11   18    9    7   12    4   17   11   15   14    4 |    14   26   19   19   20   16   27   17   24   20    17
  28  |   11   19    8   11   16    6   20   17   15   24    5 |    15   28   17   21   29   16   26   22   24   24    17
  29  |   12   16    7   10   12    5   18    8   18   26    4 |    22   27   23   18   20   19   28   19   23   24    20
  30  |    7   18    7   10   12    4   13    8   13   29    4 |    19   30   22   20   22   18   28   21   19   35    20
  31  |    6   22   11   13   20    4   19    8   12   26    5 |    32   37   32   32   39   32   38   36   30   35    33
  32  |    9   19    8   10   11    6   15   11   10   19    4 |    15   22   20   18   23   17   23   18   23   19    18
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |    9   19    8   12   13    5   16   12   13   21      |T   18   28   21   20   26   19   27   21   22   22    19
 WRMS |    9   19    8   12   14    5   15   11   12   22      |NE  17   27   21   19   26   18   25   20   21   21    18
 MEDI |    8   19    8   11   12    4   15   11   12   19      |MD  17   28   21   19   27   17   27   20   22   21    19

Table 3.1683.5   GPS week: 1683   Day: 5   MJD: 56030.000                            

        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
------+--------------------------------------------------------+---------------------------------------------------------
   1  |    9   15   10   10   15    5   14   11    9   14    4 |    29   33   35   27   40   28   39   33   26   34    30
   2  |    7   20    9   15   17    6   22   13    8   14    4 |    19   27   22   22   24   18   29   22   19   26    19
   3  |    6   12    7    7   11    3   12    9   10   18    3 |    10   19   15   14   17   12   19   14   12   11    12
   4  |    9   16    5    8   11    6   11   17    8   22    4 |     8   22   14   14   16   10   23   24   11   27    12
   5  |   10   19    9   12   13    5   19   15   11   14    4 |    10   25   20   22   25   13   27   22   17   26    15
   6  |    6    9    8    9    9    3   10    9    9   16    3 |    14   17   14   15   17   12   19   16   11   14    13
   7  |   12   18   10    8   18    5   17   11    9   20    4 |    34   38   37   37   47   34   41   31   29   34    35
   8E |   13   20    8   10   15    5   22   19   12   26    5 |    36   44   38   35   44   34   48   39   39   45    38
   9  |    8   20    8    8   10    5   17   12    8   22    4 |    19   34   21   20   27   19   34   20   20   29    22
  10  |   11   14    7    7   12    6   10   15    7   19    3 |    21   26   25   26   28   21   28   28   21   28    22
  11  |    8   16   10    8   17    3   11   13   10   19    4 |    17   27   17   17   34   15   30   21   16   22    18
  12  |   11   24   10    7   16    5   20   13   11   22    5 |    18   29   22   20   28   16   27   22   18   21    19
  13  |    5   21   10    8   13    4   13   10    7   21    4 |    19   36   24   23   35   19   35   22   17   21    21
  14  |    8   22   12   11   10    3   15   12    8   23    4 |    17   25   24   24   25   19   26   23   15   23    18
 X15  |   10  ---   10    9   12    7   22   19    9   48    6 |     9  ---   11   11   11   10   22   19    9   18    12
  16  |    8   21    9   12   13    2   16   10    6   20    4 |    14   22   14   14   24   12   20   17   12   14    12
  17  |    8   11    5   11   11    8   16   20   10   24    4 |    13   20   16   16   17   15   23   25   18   27    15
  18  |   10   27   11   10   14    6   18   16    7   18    4 |     9   31   17   15   25   11   26   20   14   23    14
  19  |    9   16    8   10   12    4   15   15   10   30    4 |    14   25   19   17   19   15   26   20   17   17    16
  20  |    6   21    8   12   14    5   13   26    6   18    4 |    13   25   18   18   30   14   26   26   16   18    16
  21  |    8   20    8    9   16    5   11   11    6   28    4 |    14   27   17   17   29   15   27   21   12   31    16
  22  |    7   23   10    9   15    4   14   18    6   14    4 |    13   23   14   15   24   10   20   20   13   20    12
  23  |    6   20    7   10   13    5   12   14    8   19    4 |    17   30   22   23   27   18   30   23   18   19    20
 X24  |    6  ---  ---  ---  ---   35  ---  ---  ---  ---    0 |    17  ---  ---  ---  ---   28  ---  ---  ---  ---    18
  25  |    7   20   10    9   14    4   12   13    9   20    4 |    12   28   23   18   32   16   32   19   14   21    17
  26  |   16   12   12   10   12    4   13   12   10   13    4 |    19   19   17   16   19   14   24   18   18   17    15
  27  |    9   18    7    8   13    4   15   12    8   17    4 |    14   23   18   18   20   14   27   20   18   24    17
  28  |   11   19   11   14   15    7   19   25    8   26    5 |    18   27   21   22   28   19   29   31   23   28    21
  29  |   10   14    9    8   11    4   17   10    8   25    4 |    16   22   19   16   16   16   25   17   15   20    16
  30  |    8   18    8    8    8    6    9   13    6   31    4 |    22   33   26   25   29   22   32   30   22   38    24
  31  |    5   16   11   10   16    4   20   11   10   21    4 |    21   26   25   25   36   24   30   24   20   27    23
  32  |    9   19    6    9   11    5   17   14    8   20    4 |    11   24   16   12   19   12   28   19   14   20    14
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |    9   18    9   10   13    5   15   15    9   21      |T   16   26   20   19   26   17   28   22   17   23    18
 WRMS |    9   18    9    9   13    5   15   12    8   21      |NE  15   25   19   18   24   15   26   21   16   22    16
 MEDI |    8   19    9    9   13    5   15   13    8   20      |MD  16   26   19   18   25   15   27   22   17   23    17

Table 3.1683.6   GPS week: 1683   Day: 6   MJD: 56031.000                            

        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
------+--------------------------------------------------------+---------------------------------------------------------
   1  |    6   15    8    9   15    5   13   10   11   16    3 |    42   41   46   43   49   44   49   42   41   44    42
   2  |    8   19    6   15   19    5   20   15    9   18    4 |    25   30   20   21   25   21   33   26   26   32    22
   3  |    9    8    6    8   13    4   11    6    6   19    3 |    13   20   15   18   27   16   17   16   22   16    17
   4  |    9   16    6   10   14    7   13   17    8   23    4 |     7   23   13   12   17    7   17   19   10   22    10
   5  |    9   20    7    9   17    4   18   14    9   12    4 |    13   24   13   16   25   10   20   16   14   21    12
   6  |    6   10   10    8   12    4   11    8    4   18    3 |    18   23   23   24   30   20   19   20   25   19    21
   7  |   16   14    9   10   17    5   17   15   12   19    5 |    30   31   33   31   39   29   35   29   24   27    28
   8E |   15   25    9   13   21    5   22   15   10   23    5 |    44   48   41   41   53   40   51   49   43   53    44
   9  |    6   19    6   12   10    5   17   10    9   22    4 |    24   33   23   22   30   19   31   23   20   31    24
  10  |   10   16    7   11   16    6   12   11   10   17    4 |    18   23   17   17   22   15   21   18   18   23    16
  11  |   11   14    6    6   16    5   11   15    8   19    4 |    15   26   16   15   33   13   25   22   18   24    15
  12  |   13   24    8   11   16    5   23   14    9   20    5 |    20   26   20   22   28   16   23   25   19   20    18
  13  |    6   18   10   12   17    4   12   12   12   19    4 |    23   35   32   29   41   26   37   30   20   22    26
  14  |    9   21    9   13   12    4   12   12   10   22    4 |    24   33   33   37   38   30   32   34   25   29    29
  15  |    8   26   11   10   12    5   21   23   12   49    6 |     7   23    7   11    9    9   18   21   10   23     8
  16  |    8   24    9   15   14    3   20   14    6   23    5 |    14   23   16   21   25   13   21   21   18   15    14
  17  |    7   13    7    9    8    5   15   16   12   26    4 |    21   28   23   23   26   22   27   26   22   31    22
  18  |   11   27    9   11   12    7   17   14    8   18    4 |    13   35   22   18   29   16   25   23   18   21    18
  19  |   10   17    8   12   10    7   14   10   11   31    4 |    19   25   21   21   19   19   28   22   22   19    19
  20  |    8   22    7   15   15    4   13   20   16   18    5 |    14   25   20   18   29   16   19   26   17   22    16
  21  |    8   22    8   10   17    3   16   11    8   27    4 |    20   34   22   19   35   21   32   23   16   31    21
  22  |    8   22    6    8   15    4   14   17    5   13    4 |    14   27   19   16   28   15   20   25   16   19    16
  23  |    5   21    8   13   15    4   11   19   11   20    4 |    23   32   27   30   33   24   31   30   22   23    24
 X24  |    6  ---  ---  ---  ---   28  ---  ---  ---  ---    0 |    19  ---  ---  ---  ---   31  ---  ---  ---  ---    19
  25  |    7   14    8   10   18    4   13   14   10   15    4 |    14   30   21   16   35   15   29   20   15   19    18
  26  |    9   11    8    8   11    6   12   12    7   12    3 |    17   16   19   18   23   14   19   20   13   16    16
  27  |    8   17    6    8    8    4   17   10    7   16    3 |    14   23   17   16   18   14   23   18   18   24    16
  28  |    9   17    8   10   15    5   17   17    9   25    4 |    16   28   23   25   35   18   25   22   19   27    19
  29  |    8   14    8   11   14    6   21   11    8   24    4 |    25   29   24   22   26   22   29   22   21   24    21
  30  |    6   16    7   10   12    6   14   11    8   32    4 |    15   27   13   12   20   13   21   18   18   29    15
  31  |    7   21   10   11   17    3   17   12    9   22    4 |    25   31   28   26   37   25   32   24   24   25    24
  32  |    8   18    9    9   14    6   16   14    8   19    4 |    12   20   19   15   19   12   25   20   16   20    14
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |    9   19    8   11   15    5   16   14    9   22      |T   19   28   22   21   29   19   26   24   20   24    20
 WRMS |    9   19    8   10   15    5   16   13    8   22      |NE  17   27   20   20   27   18   25   23   19   23    18
 MEDI |    8   18    8   10   15    5   15   14    9   19      |MD  18   27   21   21   28   16   25   22   19   23    18



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 4.1683   GPS week: 1683   MJD: 56025.0-56031.0

CENT| CLK EPO  |        BRUX       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3041 |U    4     5    11 |U   10    18    38 |U   19    15    39 |
emr | emr 2944 |     8     6    18 |U   12    18    42 |    19    13    60 |
esa | esa 2962 |     5     5    11 |U   10    17    40 |    18    15    61 |
gfz | gfz 2920 |U    5     5    12 |U   10    18    40 |U   19    11    58 |
grg | grg 2962 |     7     7    18 |U   11    17    40 |    19    16    57 |
igr | igr 2962 |     5     5    11 |    10    17    39 |    18    12    58 |
igs | igs 2936 |     5     5    13 |     7    12    26 |    17    13    55 |
jpl | jpl 2957 |     6     5    15 |U   11    18    43 |U   20    12    62 |
mit | mit 2962 |     5     5    13 |U   20    27    54 |    19    12    59 |



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 5.1683.0   GPS week: 1683   Day: 0   MJD: 56025.0

CENT| CLK EPO  |        BRUX       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3054 |     4     4     8 |     5    14    25 |    48    38   100 |
emr | emr 2972 |     7     6    14 |     7    12    32 |    53    37   104 |
esa | esa 2976 |     5     4     9 |     5    14    25 |    46    36    95 |
gfz | gfz 2842 |     4     4    10 |     5    20    24 |    56    36    98 |
grg | grg 2976 |     7     6    16 |     4    14    29 |    40    34    81 |
igr | igr 2976 |     5     4    10 |     5    15    27 |    49    37    98 |
igs | igs 2949 |     5     5    10 |     5    15    26 |    54    52    77 |
jpl | jpl 2972 |     7     5    16 |     5    14    28 |    54    36   107 |
mit | mit 2976 |     5     5    13 |    73    74   128 |    43    36    93 |

Table 5.1683.1   GPS week: 1683   Day: 1   MJD: 56026.0

CENT| CLK EPO  |        BRUX       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3050 |     4     4    13 |    10    11    34 |     6     6    16 |
emr | emr 2972 |     9     4    16 |    10    10    38 |     7    11    20 |
esa | esa 2976 |     4     4    10 |    11    10    34 |     5     5    17 |
gfz | gfz 2967 |     5     4    11 |    13    12    37 |     5     5    18 |
grg | grg 2976 |     6     6    12 |    14    15    36 |     8     9    30 |
igr | igr 2976 |     4     4    11 |    11    12    37 |     6     6    18 |
igs | igs 2928 |     5     4    13 |    11    12    43 |     5     4    17 |
jpl | jpl 2971 |     6     5    17 |    11    12    35 |     7     8    19 |
mit | mit 2976 |     5     5    14 |    12    13    36 |     6     5    15 |

Table 5.1683.2   GPS week: 1683   Day: 2   MJD: 56027.0

CENT| CLK EPO  |        BRUX       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3049 |     6     5    14 |    30    49   121 |     6     5    15 |
emr | emr 2972 |    10     7    20 |    32    48   120 |     7    10    18 |
esa | esa 2976 |     5     5    14 |    31    53   131 |     6     7    16 |
gfz | gfz 2971 |     5     5    15 |    28    52   124 |     6     7    16 |
grg | grg 2976 |     7     8    22 |    32    46   111 |    10    11    24 |
igr | igr 2976 |     5     5    14 |    30    51   122 |     6     7    15 |
igs | igs 2938 |     6     5    16 |     6     8    22 |     6     7    15 |
jpl | jpl 2971 |     6     5    17 |    31    50   117 |     8     9    19 |
mit | mit 2976 |     6     5    16 |    29    47    99 |     7     8    15 |

Table 5.1683.3   GPS week: 1683   Day: 3   MJD: 56028.0

CENT| CLK EPO  |        BRUX       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3061 |     5     6    16 |     7    20    20 |    24     4    16 |
emr | emr 2972 |    10     8    25 |    10    33    27 |    24    11    25 |
esa | esa 2976 |     5     6    15 |     7    16    20 |    16     6    18 |
gfz | gfz 2970 |     5     6    15 |     7    15    23 |    19     6    18 |
grg | grg 2975 |     8     9    23 |     8    15    26 |    22     7    25 |
igr | igr 2976 |     5     6    15 |     7    18    20 |    19     6    19 |
igs | igs 2943 |     6     6    17 |     7    20    20 |     4     6    16 |
jpl | jpl 2970 |     6     5    21 |     9    24    26 |    22     7    23 |
mit | mit 2976 |     6     7    13 |     7    20    23 |    24     6    23 |

Table 5.1683.4   GPS week: 1683   Day: 4   MJD: 56029.0

CENT| CLK EPO  |        BRUX       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 2961 |     4     5     9 |     5    11    23 |    23     8    89 |
emr | emr 2876 |     7     4    15 |     7    10    29 |    22     7    92 |
esa | esa 2880 |     5     5     9 |     6    11    25 |    22     8    85 |
gfz | gfz 2877 |     6     5    11 |     5    10    24 |    25     8    92 |
grg | grg 2880 |     8     7    14 |     8    10    25 |    21    16    85 |
igr | igr 2880 |     5     5     9 |     5    12    22 |    24     7    92 |
igs | igs 2868 |     5     4    10 |     5    11    24 |    23     6    93 |
jpl | jpl 2875 |     6     5    12 |     6    11    38 |    23     6    97 |
mit | mit 2880 |     5     5    11 |     8    10    38 |    20     7    88 |

Table 5.1683.5   GPS week: 1683   Day: 5   MJD: 56030.0

CENT| CLK EPO  |        BRUX       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3049 |     4     6     9 |     7     8    26 |     6     8    20 |
emr | emr 2876 |     8     6    17 |    10     8    30 |    10    12    31 |
esa | esa 2976 |     5     7    10 |     8     8    30 |     7     8    21 |
gfz | gfz 2847 |     7     7    13 |     7     9    32 |     8     7    24 |
grg | grg 2976 |    10    11    22 |     7    14    33 |    13    17    32 |
igr | igr 2976 |     5     7    11 |     7     9    27 |     7     6    20 |
igs | igs 2972 |     6     6    13 |     8     9    29 |     7     7    20 |
jpl | jpl 2972 |     6     6    14 |     9     9    29 |     9     7    19 |
mit | mit 2976 |     6     6    14 |     8    13    36 |     8     7    20 |

Table 5.1683.6   GPS week: 1683   Day: 6   MJD: 56031.0

CENT| CLK EPO  |        BRUX       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3065 |     4     4    10 |     6     9    19 |    18    38    18 |
emr | emr 2972 |     5     6    16 |     8     7    22 |    11     7   133 |
esa | esa 2976 |     3     4    10 |     6     6    19 |    26    32   176 |
gfz | gfz 2972 |     4     4    10 |     6     7    18 |    16    11   144 |
grg | grg 2976 |     6     6    18 |     7     8    19 |    19    18   126 |
igr | igr 2976 |     4     5    10 |     6     6    18 |    18    13   147 |
igs | igs 2954 |     4     5    10 |     6     8    21 |    16    10   148 |
jpl | jpl 2971 |     5     5    12 |     8     8    29 |    18    12   148 |
mit | mit 2976 |     4     5     9 |     7    10    22 |    24    15   162 |


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 6.1683   GPS week: 1683   MJD: 56025.500-56031.500

                                                         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     -56      78     -79     -7 |       2     16
            |      16      16      93      57      8 |       1
emr   uuuuu |      -3      67       8      -1      4 |      55     58
            |      15      20     107      76      6 |       4
esa   uuuuu |      20     -19      -2     178     -2 |       9     19
            |       5      10      59      56      6 |       2
gfz   uuuuu |     -11      -7     100      14     -1 |       4     16
            |      13      17      59      68      6 |       3
grg   uuuux |      12      -2      61    -164      8 |       1     24
            |      15      12      58      84     26 |       6
igr   xxxxx |     -27     -12      39     -71     -1 |       3     17
            |      17      14      43      45      7 |       4
irf   xxxxx |       2     -13       4     -64     -1 |       2     12
            |       8       3      24      22      6 |       4
jpl   uuuuu |      22     -14      55     -28    -10 |      37     40
            |      60      31      48      33      6 |       2
mit   uuuuu |     -17     -11    -160    -117      4 |      12     21
            |      10      15      56      53      6 |       5
ngs   uuuxu |     -44     -18      -3    -359      0 |       4     12
            |      32      28      94     106      6 |       4
sio   uuxuu |      71     102    -329     -75      2 |      46     49
            |      15      18      70      63      4 |       3


Table 7.1683.0   GPS week: 1683   Day: 0   MJD: 56025.500

                                                         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     -31       1     -99     -2 |       3     14
emr   uuuuu |       0      30     132    -135      2 |      52     54
esa   uuuuu |      15     -31     -25     250     -9 |       9     19
gfz   uuuuu |     -15      19      22       4     -8 |       2     14
grg   uuuux |      34     -10      18    -260    -10 |      -7     26
igr   xxxxx |     -19      -8      24     -75     -2 |      -2     14
irf   xxxxx |       7     -11     -30     -77      6 |      -3     10
jpl   uuuuu |      15      47     113     -70    -17 |      41     44
mit   uuuuu |      -8       0    -188     -89      6 |       8     17
ngs   uuuxu |     -68     -63      33    -445      4 |      -1      9
sio   uuxuu |      85     126    -388     -15      2 |      45     48

Table 7.1683.1   GPS week: 1683   Day: 1   MJD: 56026.500

                                                         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 |      17     -62      17    -176    -14 |       3     15
emr   uuuuu |     -25      71      97      42      3 |      52     54
esa   uuuuu |      23     -23     -68     200     -9 |       8     18
gfz   uuuuu |      -9       3     103     110     -5 |       3     15
grg   uuuux |       9     -20     107    -271     -2 |      -4     24
igr   xxxxx |     -14       7      -2     -43      8 |      -1     15
irf   xxxxx |      -4     -10      -7     -98      5 |      -2     12
jpl   uuuuu |       5     -30      91       8    -15 |      39     41
mit   uuuuu |     -33       8    -125    -193      5 |       8     18
ngs   uuuxu |      -2     -24     -22    -358      6 |       0     11
sio   uuxuu |      45     112    -336    -161     -1 |      44     47

Table 7.1683.2   GPS week: 1683   Day: 2   MJD: 56027.500

                                                         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     -39     218     -68    -14 |       1     14
emr   uuuuu |      15      59      46      52     -3 |      51     54
esa   uuuuu |      20     -23     -14     186      2 |       6     16
gfz   uuuuu |      13     -11     109      74     -6 |       2     15
grg   uuuux |       1       4     -15    -223     -2 |      -1     22
igr   xxxxx |     -22      -1      89     -12     -6 |       0     15
irf   xxxxx |       3     -12      26     -75     -2 |      -1     13
jpl   uuuuu |      30     -29      37     -11     -6 |      35     38
mit   uuuuu |     -12      -5     -60    -161      7 |       8     17
ngs   uuuxu |     -84      -7     -30    -452      0 |       0     12
sio   uuxuu |      73     119    -200    -134      3 |      43     45

Table 7.1683.3   GPS week: 1683   Day: 3   MJD: 56028.500

                                                         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 |      17     -53     -29     -59      6 |       1     14
emr   uuuuu |     -15      58     -28      69     14 |      53     55
esa   uuuuu |      28      -4     -74      93      7 |       8     17
gfz   uuuuu |     -11      -2     157      45      2 |       3     14
grg   uuuux |      14      10      56    -123    -30 |       1     21
igr   xxxxx |     -17      -6      72     -47      8 |       1     15
irf   xxxxx |       6     -11     -19     -39     -8 |       1     11
jpl   uuuuu |     -20     -11     -18       3     -5 |      35     38
mit   uuuuu |     -15     -19    -181    -113     15 |      10     18
ngs   uuuxu |     -29     -30     179    -215     -9 |       3     11
sio   uuxuu |      73      97    -404     -78     10 |      44     46

Table 7.1683.4   GPS week: 1683   Day: 4   MJD: 56029.500

                                                         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 |     -18     -62     152    -116    -12 |       5     19
emr   uuuuu |      -9      88    -181     -55      4 |      59     62
esa   uuuuu |      18      -5      33     178     -4 |      12     23
gfz   uuuuu |     -16     -29     190       4     -4 |       8     19
grg   uuuux |      -1      14      16     -80     35 |       2     21
igr   xxxxx |     -16     -32      77     -66      0 |       7     20
irf   xxxxx |       3     -12      24     -55      3 |       5     13
jpl   uuuuu |     -32     -14      18     -74     -4 |      37     41
mit   uuuuu |     -14     -16    -152    -125     -4 |      16     26
ngs   uuuxu |      -7     -33       2    -473      5 |       6     14
sio   uuxuu |      84      85    -364     -34     -4 |      49     53

Table 7.1683.5   GPS week: 1683   Day: 5   MJD: 56030.500

                                                         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 |     -11     -69     145      -1    -10 |       2     17
emr   uuuuu |       0      77     -64      57      9 |      58     61
esa   uuuuu |      13     -24      65     219      4 |      10     20
gfz   uuuuu |     -31       0      71     -75      6 |       6     18
grg   uuuux |      -4      -6     103    -109     41 |       6     24
igr   xxxxx |     -59     -29      38    -148     -3 |       6     20
irf   xxxxx |     -14     -19       2     -67     -9 |       6     14
jpl   uuuuu |     150     -50     100     -23     -6 |      36     39
mit   uuuuu |     -28     -38    -238    -114      2 |      15     26
ngs   uuuxu |     -60      25     -67    -226     -6 |       8     14
sio   uuxuu |      56      76    -332    -110      0 |      48     52

Table 7.1683.6   GPS week: 1683   Day: 6   MJD: 56031.500

                                                         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 |      18     -75      41     -36      0 |       2     17
emr   uuuuu |      14      85      54     -38     -2 |      61     65
esa   uuuuu |      22     -25      68     116     -4 |      12     22
gfz   uuuuu |      -6     -27      49     -65      6 |       8     20
grg   uuuux |      27      -5     142     -84     26 |      12     31
igr   xxxxx |     -40     -12     -26    -107    -10 |       8     20
irf   xxxxx |       9     -12      29     -36     -2 |       7     14
jpl   uuuuu |       2     -12      46     -31    -18 |      36     39
mit   uuuuu |      -7      -7    -180     -27      0 |      19     28
ngs   uuuxu |     -61       4    -119    -345      1 |       9     15
sio   uuxuu |      83     101    -283       6      2 |      50     54



More information about the IGSREPORT mailing list