[IGSREPORT-20573] Wk 1673 IGS Final Orbits

IGS ACC igs.acc at noaa.gov
Thu Feb 16 11:21:35 PST 2012


Author:  AC Coordinator / NOAA NGS

sum-file Version 2.0
Final IGS Orbit Combination - Week 1673   (Jan 29, 2012 - Feb 04, 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:

igs1673[0-6].sp3  IGS GPS ephemeris files in SP3 format.
igs1673[0-6].clk  IGS GPS satellite and station clocks in clock RINEX format.
igs1673[0-6].cls  IGS GPS clock combination summary report.
igs16737.erp      Earth Rotation Parameters (ERP) and their rates as well as
                  Universal Time (UT1-UTC) and Length Of Day (LOD) associated 
                  with IGS ephemerides.
igs16737.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   | 32 32 MOBS DRAO MOBS WUHN
                0  |  EMR   | 3 6 3 6 WUHN
                0  |  ESA   | WUHN UNSA
                0  |  GFZ   | 17 19 29 DAV1
                0  |  GRG   | USN3
                0  |  JPL   | 3 4 6 27 28
                0  |  MIT   | 3 6 3 6 MAW1 MAW1
                1  |  COD   | DARW WUHN DARW SUTM WUHN XMIS
                1  |  EMR   | 6 30 6 30
                1  |  ESA   | 3 3 UNSA
                1  |  GFZ   | 3 5 17 19 29 30 DAEJ DAV1 IRKJ
                1  |  GRG   | USN3
                1  |  JPL   | 3 6 30
                1  |  MIT   | 3 6 9 3 6 9 MAW1 MAW1 NYAL
                2  |  COD   | BOR1 MOBS SOFI SUTM
                2  |  EMR   | 3 6 3 6 WUHN
                2  |  ESA   | MATE UNSA
                2  |  GFZ   | 17 19 29 BOR1 CAS1 DRAO KARR METS
                2  |  GRG   | USN3
                2  |  JPL   | 3 6 AREQ PALM
                2  |  MIT   | 3 6 7 26 30 3 6 7 26 30 DAV1 GRAZ DAV1 GRAZ HYDE
                3  |  COD   | 29 29 FAIR GRAZ
                3  |  EMR   | 3 6 3 6
                3  |  ESA   | WUHN
                3  |  GFZ   | 19 KIRU
                3  |  GRG   | USN3
                3  |  JPL   | 3 6
                3  |  MIT   | 3 6 7 3 6 7 CAS1 DAV1 MAW1 SYDN CAS1 DAV1 SYDN
                4  |  COD   | JOZ2 SOFI SUTM XMIS
                4  |  EMR   | 3 6 6
                4  |  ESA   | HYDE HYDE
                4  |  GFZ   | 19 AREQ KARR KIRU STHL WUHN
                4  |  GRG   | USN3
                4  |  JPL   | 3 6 AREQ
                4  |  MIT   | 3 6 14 21 32 3 6 14 21 32 MAW1 MAW1
                5  |  COD   | XMIS
                5  |  EMR   | 3 6 3 6
                5  |  ESA   | HYDE COCO HYDE TIXI
                5  |  GFZ   | BRFT DAV1 MATE
                5  |  GRG   | BRST CAS1 USN3
                5  |  JPL   | 3 6 KARR
                5  |  MIT   | 3 6 19 3 6 19 MAW1 CAS1
                6  |  COD   | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20
                6  |  COD   | 21 22 23 25 26 27 28 29 30 31 32 1 2 3 4 5 6 7 8
                6  |  COD   | 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 25 26
                6  |  COD   | 27 28 29 30 31 32
                6  |  ESA   | 6 6 TIXI
                6  |  GFZ   | 6 SCOR
                6  |  GRG   | NKLG USN3
                6  |  JPL   | 3
                6  |  MIT   | 3 11 15 19 21 23 3 11 15 19 21 23 CAS1

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

 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  |   -1.2    -.5   -2.0     -36    -21     21     .27
       EMR  |    9.0    2.9   20.8       4      6      5     .45
       ESA  |    7.0    5.9   -2.3      66   -158     46     .31
       GFZ  |   -2.6     .6   -2.6     -57     27     -5     .50
       GRG  |    6.4     .1   -3.2     -22     31    -30     .36
       JPL  |    3.0    1.3   19.1     -57     11    -23     .53
       MIT  |    6.2    1.6    7.2     -32     20    -50     .35
       NGS  |    6.5    2.2    1.2       5    -40     29     .52
       SIO  |    7.4    -.3   13.1     -29   -124     57     .22


 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 1.1673.a). It also displays the computed satellite
position sigmas for the combined orbits (table 1.1673.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 2.1673.[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 3.1673.[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 5.1673.0-6).

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 1673 summary.                       (Jan 29, 2012 - Feb 04, 2012)

Table 1.1673.a   GPS week: 1673   MJD: 55955.000-55961.000

         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  252|    0     1     2    33    -4     5  -.36    9    9 |     666    -892   2060   2256
        |    0     0     1    10    13    16   .01           |    2482    1491
emr   98|    0     0    13   -58   -64   -37   .25   19   19 | -140007   -4819     14    102
        |    1     1     3    11    32    31   .04           |  379222   14348
esa  129|    1     0    -1   -89   160    -4   .14   11    7 |    -407     506     13    129
        |    0     0     1     8    13    10   .03           |    1805    1880
gfz  190|    0    -1    -3    73   -96    12   .51   11   11 |      64     -50     26     92
        |    0     1     0    36    65    17   .03           |     346     470
grg  124|    1     1    -6    23  -116   -18   .75   16   15 |    -114     204     53    226
        |    0     1     0    15    18    14   .07           |     355     664
igr  n/a|    0     0    -1   -16   -47    -6  -.08    5    5 |   -6861     485     19     78
        |    0     0     0     8    17    15   .02           |     948     787
jpl  148|    0    -1     5    58   -67    -2   .41   14   14 |    3715     540     19     93
        |    1     1     1    13    17    69   .04           |    1084     824
mit  257|    0     0    -3    36  -137   -28  -.44   11    9 |    -251     339     23    183
        |    0     1     1    14    15    14   .02           |     256     513
ngs  220|    0     0    -3   -14     4    14  -.34   11    8 |    -192    -621   2040   3909
        |    0     0     1    21    42    11   .03           |     872    1270
sio  246|   -1    -1     2     3   180    57  -.35   19   17 |     ---     ---    ---    ---
        |    0     1     1    19    21    17   .01           |     ---     ---


Table 1.1673.b   GPS week : 1673   MJD: 55955.000-55961.000   

         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  |    4    4    4    4    4    4    4 |
   2  |    5    4    5    5    5    5    5 |
   3  |    8    8    7    6    7    7    7 |
   4  |    4    3    3    3    4    4    3 |
   5  |    5    5    4    4    4    4    4 |
   6  |    7    6    6    6    6    6    6 |
   7  |    4    4    4    4    4    4    4 |
   8  |    4    4    4    3    4    4    4 |
   9  |    4    3    3    4    4    4    4 |
  10  |    4    3    3    3    3    4    3 |
  11  |    5    4    5    4    4    4    4 |
  12  |    4    4    5    4    4    4    5 |
  13  |    5    4    4    4    4    4    4 |
  14  |    4    4    4    4    4    4    4 |
  15  |    4    4    4    4    4    4    4 |
  16  |    5    5    5    4    4    5    5 |
  17  |    4    5    5    4    4    4    4 |
  18  |    5    5    5    5    5    5    6 |
  19  |    4    4    4    4    4    4    4 |
  20  |    4    4    4    4    5    4    5 |
  21  |    4    4    4    4    4    4    5 |
  22  |    4    4    3    4    4    4    4 |
  23  |    5    4    4    4    5    4    5 |
  24  |  ---  ---  ---  ---    0    0    0 |
  25  |    4    3    4    4    4    3    4 |
  26  |    4    4    4    5    5    5    4 |
  27  |    4    4    4    4    5    5    5 |
  28  |    3    4    4    4    4    4    4 |
  29  |    5    4    5    4    4    4    5 |
  30  |    4    4    4    4    4    4    4 |
  31  |    4    4    4    4    4    4    4 |
  32  |    4    4    5    5    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 2.1673.0   GPS week: 1673   Day: 0   MJD: 55955.000                            

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  252|    0     0     4    25    -1     0  -.34    8    8 |    -917     594     17     77
        |                     49   -64                       |
emr   98|    0    -1    18   -37   -72   -52   .23   20   19 |    2166      81     12    108
        |                    -45   -29                       |
esa  129|    1     0    -2   -85   168     3   .13    7    6 |     557    -535     12    125
        |                     35   -15                       |
gfz  190|    0     0    -2    97  -131    18   .53   12   11 |    -362    -456     29    104
        |                    -42    32                       |
grg  124|    1     1    -6    15  -114   -11   .68   16   14 |     -50    -225     53    221
        |                      6   -25                       |
igr  n/a|    0     0    -1   -34   -27   -18  -.06    4    4 |   -7603    -324     17     80
        |                     12    20                       |
jpl  148|    0     0     5    42   -66    14   .37   14   14 |    2568      58     18    106
        |                     22    -9                       |
mit  257|   -1    -1    -4    59  -151   -34  -.42   13   10 |    -260     -63     19    179
        |                      8    30                       |
ngs  220|    0     0    -4   -55    41     5  -.36   11    7 |    -983     740   2214   3983
        |                     33   -22                       |
sio  246|   -2    -4     3    35   147    47  -.37   21   19 |     ---     ---    ---    ---
        |                    -25   -63                       |

Table 2.1673.1   GPS week: 1673   Day: 1   MJD: 55956.000                            

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  252|    0     0     3    37     0    25  -.36    9    9 |     720   -2078     23     84
        |                      2   -19                       |
emr   98|   -1    -1    18   -58   -57   -44   .27   20   20 |    1871     766     16     74
        |                     -1   -67                       |
esa  129|    0     1    -1   -85   133    -6   .14   35    7 |   -2791    3466     17    145
        |                     28     5                       |
gfz  190|    0     0    -4    53   -90     0   .53   11   10 |     451    -715     26     84
        |                     10    24                       |
grg  124|    1     1    -7    53  -116    -3   .72   15   14 |    -296      43     50    241
        |                    -12   -16                       |
igr  n/a|    0     0    -1   -10   -50    -2  -.09    4    4 |   -8072     714     20     75
        |                    -34    35                       |
jpl  148|    0    -1     4    77   -76   -32   .46   14   14 |    2418     914     18     83
        |                     44   -43                       |
mit  257|   -1    -1    -3    27  -133   -25  -.44   11    8 |    -384      60     24    152
        |                      6    33                       |
ngs  220|    1     0    -2   -20    29    23  -.37   11    8 |     903   -2227   2289   3838
        |                    -51   -35                       |
sio  246|   -2    -2     2   -11   184    51  -.35   18   17 |     ---     ---    ---    ---
        |                    -10   -82                       |

Table 2.1673.2   GPS week: 1673   Day: 2   MJD: 55957.000                            

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  252|    0     1     2    18     9   -18  -.37    9    9 |   -1671    1475     20     78
        |                     12   -51                       |
emr   98|    1     1    11   -51   -36   -48   .27   19   19 |    2577    1872     13     84
        |                     -7   -39                       |
esa  129|    0     0     0   -80   154    -5   .07    8    8 |   -1685     637     14    120
        |                     28    12                       |
gfz  190|    0    -1    -3    48   -74    45   .47    9    9 |     -59     197     24     83
        |                     -8    46                       |
grg  124|    2     3    -6    21   -86   -12   .73   16   14 |    -661    1004     52    216
        |                     -2   -28                       |
igr  n/a|    0     0    -2   -11   -66    13  -.09    5    5 |   -7613    1899     22     67
        |                    -49    19                       |
jpl  148|    0    -2     3    52   -40   -72   .38   14   13 |    3000    2068     19     95
        |                     15   -17                       |
mit  257|    0     0    -3    13  -123    -1  -.43   11    8 |    -551     815     24    157
        |                     -4     9                       |
ngs  220|   -1     0    -1    -9     3    13  -.34   12    8 |   -1538    1271   1926   3771
        |                    -79    72                       |
sio  246|   -1     0     1   -25   202    76  -.34   19   14 |     ---     ---    ---    ---
        |                    -18  -102                       |

Table 2.1673.3   GPS week: 1673   Day: 3   MJD: 55958.000                            

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  252|    0     1     3    27   -18     5  -.35    9    8 |      65    -863     20     79
        |                     52   -21                       |
emr   98|    0     0    15   -62   -84   -66   .26   20   20 |    3598    1210     13     95
        |                     -6   -21                       |
esa  129|    0     0    -2   -86   175   -21   .13    6    6 |    1821   -1539     13    110
        |                     14    -2                       |
gfz  190|    0    -2    -2    47   -25    -1   .50   10    9 |     316    -202     24     85
        |                     -1    36                       |
grg  124|    1     1    -4    23  -108   -25   .79   16   14 |      40     298     53    233
        |                     -7    -3                       |
igr  n/a|    0     0     0   -12   -60   -15  -.06    4    4 |   -6545     908     18     71
        |                    -27    25                       |
jpl  148|    1     0     7    61   -57   133   .46   15   15 |    4180     980     18     82
        |                    -45   -81                       |
mit  257|    0     0    -3    31  -129   -41  -.43   10    8 |    -180     479     27    176
        |                     15     6                       |
ngs  220|    0     0    -4     8   -60     0  -.30   12    7 |      28    -914   1952   3975
        |                   -106    65                       |
sio  246|   -1     0     3    11   188    54  -.34   17   15 |     ---     ---    ---    ---
        |                     -9   -93                       |

Table 2.1673.4   GPS week: 1673   Day: 4   MJD: 55959.000                            

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  252|    0     1     2    38   -24    20  -.39    9    9 |    -337    -763     18    245
        |                     17    -8                       |
emr   98|    0     1     7   -59  -121    26   .18   20   20 | -999999  -37312     15    143
        |                      6     1                       |
esa  129|    1     0     0   -86   162   -10   .13    6    6 |    1145   -1059     14    135
        |                     19   -23                       |
gfz  190|    0    -3    -3    30   -12    -2   .55   10   10 |    -296     596     25     97
        |                      3    26                       |
grg  124|    0     1    -5    30  -113   -23   .70   16   14 |     147    -848     65    233
        |                     -2    -7                       |
igr  n/a|    0     0    -1   -14   -65   -30  -.10    5    4 |   -6631    -255     21     86
        |                      0    25                       |
jpl  148|   -1    -1     8    74   -96    25   .39   14   13 |    4042    -213     19    104
        |                     33   -23                       |
mit  257|    0     1    -3    40  -127   -43  -.46   11   10 |     -53    -398     25    212
        |                     -1    14                       |
ngs  220|    0     1    -3     6   -50    14  -.38   11    8 |    -316    -938   1956   3534
        |                    -36    51                       |
sio  246|   -1     0     0    -3   198    28  -.37   19   16 |     ---     ---    ---    ---
        |                    -11  -108                       |

Table 2.1673.5   GPS week: 1673   Day: 5   MJD: 55960.000                            

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  252|    0     1     1    49    -5    15  -.35    9    8 |     886   -2066     21     85
        |                     36   -50                       |
emr   98|    0    -3    10   -75   -57   -21   .31   18   18 |    5522    -305     17     99
        |                     24   -53                       |
esa  129|    1     0     0   -96   160    -1   .17    6    6 |   -2245    2613     12    125
        |                     29     7                       |
gfz  190|    0    -2    -4   110  -149     7   .50   14   13 |     470    -174     29    103
        |                    -15    15                       |
grg  124|    3     3    -5    17  -144    -8   .88   17   17 |     396     127     49    224
        |                     -7   -27                       |
igr  n/a|    0     0    -1   -13   -25     1  -.06    5    5 |   -5374     -55     18     82
        |                     -3    13                       |
jpl  148|   -1     0     4    60   -65   -54   .42   15   14 |    5358     -38     22     93
        |                     86   -73                       |
mit  257|    0    -1    -1    42  -167   -31  -.41   11   10 |     173     406     20    185
        |                     12    23                       |
ngs  220|    0     0    -3   -11    34    11  -.31   10    7 |     739   -1831   1921   4030
        |                    -41   -57                       |
sio  246|   -1     0     2     9   154    63  -.34   20   17 |     ---     ---    ---    ---
        |                     -9   -82                       |

Table 2.1673.6   GPS week: 1673   Day: 6   MJD: 55961.000                            

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  252|   -1     1     0    38    10   -12  -.36    9    9 |    5918   -2547  14303  15148
        |                     20   -21                       |
emr   98|    2    -2    13   -63   -24   -56   .22   20   20 |    4211     -46     16    112
        |                     10   -44                       |
esa  129|    2     0    -1  -105   170     9   .18    7    7 |     348     -35     15    146
        |                     39   -11                       |
gfz  190|    0    -2    -4   124  -192    19   .51   12   11 |     -66     400     31     90
        |                    -37    33                       |
grg  124|    1     0    -5     1  -131   -45   .73   18   17 |    -378    1029     54    219
        |                     23   -35                       |
igr  n/a|   -1     0     0   -17   -36     4  -.08    5    5 |   -6193     513     22     90
        |                    -31    47                       |
jpl  148|   -1    -1     6    43   -66   -32   .41   14   13 |    4440      13     21     89
        |                     50    -7                       |
mit  257|    0     0    -1    37  -130   -21  -.46   11   10 |    -503    1079     25    223
        |                     -3     4                       |
ngs  220|    0     0    -2   -23    32    35  -.31   10    8 |    -177    -453   2028   4236
        |                    -20    62                       |
sio  246|    0    -1     2     8   188    79  -.34   21   18 |     ---     ---    ---    ---
        |                    -35   -85                       |

       
       
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 3.1673.0   GPS week: 1673   Day: 0   MJD: 55955.000                            

        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   14    5    9   11    3   14    9    8   26    3 |    30   30   31   35   40   32   37   39   34   37    32
   2  |    7   21    8   13   13    4   15    8    9   30    4 |    20   30   24   30   26   22   28   22   22   32    22
   3E |   16   20   10   14   22    5   19   24   38   24    7 |    15   27   35   23   31   18   27   33   44   30    20
   4  |    8   12    6   10   13    5   12    8   11   14    3 |    37   31   36   40   42   38   36   38   40   37    36
   5  |   10   15    8   14   11    6   16    8    7   30    4 |    27   35   37   39   40   32   39   30   32   31    32
   6E |   10   20   11   14   15    4   21   37   16   24    6 |    18   25   20   20   28   17   27   38   24   25    18
   7  |    8   23    5    9   15    4   13   12    6   15    3 |    12   26   15   20   23   13   21   12   13   17    13
   8  |   11   18    9    9   15    4   14   14    7   15    4 |    11   29   15   19   16   11   23   18   12   16    12
   9  |    8   14    5    7   11    6   12   12   10   16    3 |    15   23   16   22   18   14   22   18   19   24    16
  10  |    9   11    6   11   13    3   11    7    6   20    3 |    22   25   29   38   36   30   28   30   29   24    28
  11  |    7   21    7    9   21    3   13   17   12   18    4 |    22   32   28   34   49   26   32   33   26   24    27
  12  |    7   22    5   14   15    4   15    7    7   21    4 |    21   33   23   27   27   21   30   18   25   18    22
  13  |    9   19    8   12   28    4    9   14   12   10    4 |    19   29   20   24   35   18   21   24   22   21    18
  14  |    6   22    4   11   19    4   11   14    7   17    4 |    12   30   16   19   27   15   19   20   14   19    15
  15  |    7   33    4   12   19    4   15    8    7   13    4 |    16   41   17   21   29   15   25   18   16   20    16
  16  |    6   23    9   12   11    3   18   14   10   25    4 |    19   30   22   23   25   19   28   20   21   24    20
  17E |    5   19    8   11   15    5   15   13    8   14    4 |    41   41   37   35   38   39   38   47   41   36    39
  18  |    9   18    6   26   15    5   14    7    6   33    5 |    26   33   28   48   33   30   32   30   32   43    28
  19E |    8   20    6    9   16    5   14   13   11   16    4 |    16   26   24   26   29   20   22   20   19   27    20
  20  |    7   15    6   12    8    3   10    7    6   27    3 |    34   33   35   37   36   34   36   35   34   34    34
  21  |    7   21    7   10   15    5   15    8   10   21    4 |    28   30   30   29   28   27   27   31   31   32    27
  22  |    8   15    6   10   12    5   12   10    9   23    3 |    30   34   36   41   43   35   36   39   37   36    35
  23  |   11   26    9   10   20    4   16   11   10    9    4 |    17   34   21   20   29   16   23   15   17   16    16
  25  |    9   15    6   13   14    4   13   11    6    9    3 |    20   21   20   18   24   18   25   16   20   18    19
  26  |    9   18    6   10   14    4   15   11    8   27    4 |    12   24   14   18   20   13   22   14   16   28    14
 X27  |   10   18    4    8   13    4   13   12    8  ---    4 |    10   24   15   20   17   12   21   20   17  ---    14
  28  |    5   15    4    9   15    5   11    5    6   15    3 |    17   26   17   23   26   15   24   17   15   16    16
  29E |    6   26    8   11   15    6   17   11   10   17    4 |    35   40   29   26   35   32   35   37   40   38    33
 X30  |    8   15    5    9   15    3   13   14   12  ---    4 |     9   20   14   15   16   11   19   15   15  ---    11
  31  |    5   15    7   12   17    5   14    8    7   10    3 |     8   22   14   18   31   12   20   10   10   10    12
  32  |    7   19    4    8    9    3   12   18    9   28    4 |    18   21   21   26   29   21   24   30   16   30    21
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |    8   20    7   12   16    4   14   13   11   21      |T   20   29   23   26   29   21   27   25   24   26    22
 WRMS |    8   19    6   11   14    4   14   10    7   19      |NE  19   28   22   27   29   21   26   23   22   25    21
 MEDI |    8   19    6   11   15    4   14   11    8   18      |MD  19   30   22   24   29   19   27   22   22   25    20

Table 3.1673.1   GPS week: 1673   Day: 1   MJD: 55956.000                            

        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  |   10   18    6    9   15    4   12    9    7   21    3 |    21   26   24   23   32   21   31   27   22   23    22
   2  |    8   24    5   12   12    5   17    6    8   29    4 |    15   27   15   22   22   15   23   17   19   28    15
   3E |   18   20  190   16   19    8   21   18   33   21    8 |    10   22  160   24   32   17   29   30   41   26    20
   4  |    8   12    4    9   13    4   10    7    7   11    3 |    22   23   23   31   32   24   28   27   28   24    24
   5  |    8   15    9   30   12    6   15   11   10   21    5 |    16   26   23   40   30   19   28   17   19   16    20
   6E |   12   18    9    9   14    4   19   28   18   20    6 |    14   24   17   16   25   16   26   38   25   19    16
   7  |    8   19    7    8   13    5   17    7   10   15    3 |    13   24   16   19   25   12   25   14   17   18    13
   8  |   12   18    6    8   17    4   11    9    7   12    3 |     9   24   14   19   16   11   21   16   14   13    12
   9  |    9   16    3   10   11    4    9    8    8   14    3 |    14   25   19   24   19   16   23   20   17   18    16
  10  |   10   10    3    9   13    4    8    6    6   17    3 |    15   19   20   26   25   20   22   22   22   15    18
  11  |    7   20    6   12   22    5   14   15    9   16    4 |    16   29   23   29   47   21   31   25   20   15    22
  12  |    7   23    4   14   16    3   18    9   10   21    4 |    17   32   21   31   28   20   30   18   25   16    20
  13  |    9   17    5    9   25    4    9    7   16   10    4 |    14   27   15   22   37   13   21   20   24   16    15
  14  |    6   22    3    8   20    3    8    9    9   16    3 |    10   27   12   20   26   11   20   17   14   18    11
  15  |    7   25    3   11   19    2   17    5    7   11    3 |    12   32   14   22   30   11   24   13   11   15    13
  16  |    8   26   11   14   11    4   18   14   10   22    4 |    13   27   19   19   24   13   28   14   17   18    14
  17E |    9   18    7   10   18    4   17   18    9   13    4 |    38   37   36   32   35   35   36   33   38   31    34
  18  |    9   19    7   17   12    5   13    9   12   29    4 |    19   27   22   35   24   22   26   22   23   36    20
  19E |    7   22    7   10   13    3   12    9    6   15    3 |    15   29   21   24   29   16   23   18   18   24    19
  20  |   11   17    5    7   11    4   12    9    9   25    4 |    19   23   23   25   25   22   27   24   22   23    20
  21  |    9   25    8    8   13    4   17    8    9   20    4 |    20   26   20   22   22   21   24   24   24   25    19
  22  |    8   15    5   11   10    2   11    8   10   17    3 |    18   22   21   27   28   20   26   23   25   23    20
  23  |    7   28    8    7   19    4   13    6    9   10    4 |    10   31   16   18   30   10   21   12   12   11    11
  25  |    7   15    5    9   14    2   12    9    8   10    3 |    22   26   27   24   29   23   31   25   27   25    23
  26  |    7   18    6    9   16    4   12   12    7   26    4 |    11   24   13   19   19   11   21   11   13   28    12
 X27  |   11   20    4    9   13    4   10   10    7  ---    3 |     9   26   15   21   18   14   20   19   17  ---    13
  28  |    9   19    6    7   15    3   14    6    7   15    3 |    15   28   17   22   25   15   25   16   19   13    15
  29E |    8   30    6    9   15    4   16   12    9   17    4 |    22   34   19   20   23   20   24   24   23   25    20
 X30  |   10   14    6   10   15    6   11   12    7  ---    3 |    10   19   13   15   16   12   22   15   12  ---    11
  31  |    8   17    5    8   16    4   15    9    6   10    3 |     8   22   15   17   30   10   25   13   11    9    11
  32  |    9   17    5    7   12    7   16   12    8   23    4 |    14   20   19   24   26   17   26   22   17   24    17
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |    9   20   35   11   15    4   14   11   11   18      |T   15   26   23   23   26   17   25   20   20   20    17
 WRMS |    9   20    7   10   14    4   14    8    8   17      |NE  14   25   18   23   26   16   24   18   18   19    16
 MEDI |    8   18    6    9   14    4   13    9    9   17      |MD  15   26   19   22   26   16   25   20   19   19    17

Table 3.1673.2   GPS week: 1673   Day: 2   MJD: 55957.000                            

        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    8    8   16    5   13   10   11   18    4 |    20   27   27   28   36   26   31   32   24   29    25
   2  |    9   24    8   10   18    5   17    7   10   29    4 |    18   28   18   23   23   18   27   21   21   30    18
   3E |   16   17    9   12   17    7   17   16   35   22    6 |    13   24   50   26   33   22   29   31   37   28    21
   4  |    8   12    5    8   16    5    8    6   11   10    3 |    24   27   27   34   36   30   30   30   28   28    27
   5  |    8   11    5   11   11    4   14    7    9   20    3 |    22   27   24   29   32   26   30   24   25   24    24
   6E |   11   19    8    8   17    5   19   29   17   20    6 |    15   25   18   18   27   18   25   40   23   22    17
   7  |    5   17    7   10   12    5   13    7    8   13    3 |    13   24   17   23   28   14   22   15   12   16    14
   8  |   11   15   10   10   17    5   11   10   10   11    4 |    13   24   18   21   18   13   20   20   15   15    14
   9  |    9   16    7   10   13    4    8    7    8   12    3 |    15   27   17   25   21   18   23   21   17   19    17
  10  |    9    9    5    8   14    4    8    5   12   16    3 |    19   22   22   31   28   25   26   26   27   20    23
  11  |    8   20    7    8   25    5   15   13   11   18    4 |    18   29   26   32   48   25   31   29   24   22    24
  12  |    9   26    8   12   14    5   17    7    9   19    4 |    16   37   21   30   29   18   30   20   20   15    20
  13  |    7   19   11   10   30    5   11    5    8   10    4 |    16   29   25   24   40   18   20   19   20   19    18
  14  |    8   19    7   10   19    4    9   10   14   13    4 |    13   28   15   22   27   14   18   17   19   18    14
  15  |    8   20    7   11   19    4   17    7    9   10    4 |    16   27   16   23   32   17   24   17   18   19    16
  16  |    7   26   11   11   12    4   20   12   11   19    4 |    15   31   20   20   27   16   30   17   16   20    17
  17E |    8   22    8   10   14    5   16   21   15   17    5 |    50   47   44   39   45   46   49   50   47   43    44
  18  |    9   18    8   13   11    7   12   10   14   29    4 |    20   28   22   31   26   25   26   24   26   34    22
  19E |    7   15   11    8   18    7   13    9    8   22    4 |    16   24   26   25   30   21   21   21   16   30    20
  20  |    9   14    8    9   11    6   10   13   10   29    4 |    23   28   27   27   32   27   30   28   26   30    25
  21  |   11   22    9   10   12    5   17    6    7   18    4 |    21   25   24   24   27   22   22   24   25   22    20
  22  |    9   13    6    9    7    4   11    7   10   16    3 |    24   28   26   32   31   26   27   31   31   31    26
  23  |    5   25    9    7   21    5   14    7    9   11    4 |    15   29   22   20   33   15   20   14   15   15    15
  25  |    9   15    7    9   10    5   12    7    9   10    3 |    17   26   23   24   28   19   27   21   19   18    19
  26  |    8   19    8    7   15    4   10   12   10   26    4 |    14   24   18   21   22   14   20   14   16   28    14
  27  |   12   21    7    8   12    6    9   10    9   16    3 |    12   27   16   23   19   16   19   19   18   20    15
  28  |    7   18    7   12   13    6   13    7    9   11    3 |    17   27   19   22   25   18   23   17   20   17    16
  29E |   11   21   10   10   17    4   18   12   11   16    4 |    28   34   23   23   27   25   31   28   30   26    24
  30  |    9   14    6    8   13    4   10    9   10   13    3 |    10   20   12   13   18    9   19   11   11   12    10
  31  |    7   19    8    7   14    6   18    8    9   10    3 |    10   24   15   17   29   12   24   13   14   10    12
  32  |   10   19    6    5   13    7   15   19    7   36    5 |    15   22   21   25   29   20   25   26   16   28    18
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |    9   19    8    9   16    5   14   11   12   19      |T   18   27   22   25   29   20   25   23   21   22    19
 WRMS |    9   19    8    9   14    5   13    8    8   14      |NE  16   26   20   24   28   19   24   21   20   21    18
 MEDI |    9   19    8   10   14    5   13    9   10   16      |MD  16   27   22   24   28   18   25   21   20   22    18

Table 3.1673.3   GPS week: 1673   Day: 3   MJD: 55958.000                            

        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  |    5   20    4    7   15    5   13   10    9   16    3 |    21   29   21   23   34   22   33   30   23   24    23
   2  |   10   28    7   10   16    5   19    8    7   31    4 |    22   35   21   25   26   20   29   22   21   29    20
   3E |   15   21    7   13   20    7   19   15   33   19    6 |    14   26   27   24   31   18   29   29   36   24    19
   4  |    9   12    5    9   17    3   12    7    6   10    3 |    22   24   26   31   33   27   30   30   29   30    26
   5  |   10   14    8    9   11    3   15    8   10   17    3 |    23   30   33   36   37   28   34   27   28   28    28
   6E |   10   18    7   10   18    6   19   26   19   20    5 |    17   27   17   17   26   16   26   41   26   22    18
   7  |    8   21    6    8   14    4   16    5    6   11    3 |    15   25   17   18   26   13   27   15   14   15    14
   8  |   12   15    3    8   15    4   13    7    7   10    3 |    15   23   12   17   19   14   29   16   13   15    12
   9  |   10   19    6    9   14    2   13    8   12   13    3 |    19   28   19   23   21   17   30   20   18   18    17
  10  |    9    9    6    9   13    4   11    6    6   16    3 |    19   23   25   31   30   24   28   28   22   23    24
  11  |    6   22    4    8   24    6   16    9   12   16    4 |    19   32   24   30   46   22   32   28   27   19    24
  12  |    8   26    6   12   16    4   17    7    6   17    4 |    18   30   18   24   27   16   32   17   18   14    17
  13  |    7   20    6   13   27    3    9    5    9    6    4 |    16   29   18   22   41   16   29   20   20   20    17
  14  |    7   23    5    9   21    4   12   11   10   14    4 |    13   28   15   19   28   13   23   16   15   17    13
  15  |    9   23    5   12   18    3   17    6   10   11    4 |    17   31   16   22   31   14   28   15   14   19    15
  16  |    7   26    8   11   13    4   19    9    9   18    4 |    17   29   18   19   26   17   30   18   20   20    16
  17E |    7   20    7    8   15    3   18   12   12   12    4 |    32   30   29   24   27   29   33   31   30   26    27
  18  |    9   17    7   13   12    5   15   10   13   30    4 |    23   29   26   34   27   26   33   28   31   38    26
  19E |    6   19    7    9   16    5   15   12   12   15    4 |    18   27   23   27   31   20   23   19   24   28    20
  20  |   10   18    7   10   11    6   13   10   10   28    4 |    30   29   31   31   34   30   36   31   29   31    29
  21  |    8   22    6    9   13    4   18    6   13   19    4 |    23   28   22   21   26   22   31   23   28   24    21
  22  |    7   15    5    8   11    4   12   10   10   17    3 |    27   28   32   32   34   30   32   32   32   31    28
  23  |    7   28    9    9   19    3   16    7    8    9    4 |    14   31   19   19   32   15   28   14   18   17    15
  25  |    8   16    5    9   14    3   16   11    8    9    3 |    20   22   20   20   29   19   36   17   22   17    19
  26  |    9   20    9    9   16    5   13   12   10   26    4 |    16   27   18   17   21   13   28   14   14   28    14
 X27  |   11   19    5   11   15    5   14   11   10  ---    4 |    15   27   17   22   21   16   31   18   18  ---    16
  28  |    6   21    6   11   11    3   13    8    6   12    3 |    17   30   19   22   25   16   28   17   16   15    16
  29E |    6   26    6    9   21    5   17    6    9   16    4 |    38   42   37   35   42   36   43   42   35   42    37
  30  |    9   14    4    8   16    4   12    7   10   12    3 |    10   20   14   15   19   11   24   14   12   10    11
  31  |    6   22    7   10   13    4   20    8    8    8    3 |    11   25   15   19   29   13   30   13   13   10    12
  32  |   10   19    8    6   11    5   16   12   12   25    4 |    21   22   25   25   29   21   31   27   21   26    22
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |    9   20    6   10   16    4   15   10   12   17      |T   19   27   21   24   29   19   30   22   22   22    19
 WRMS |    8   20    6    9   14    4   15    8    7   15      |NE  18   27   20   23   28   19   30   21   20   21    19
 MEDI |    8   20    6    9   15    4   15    8   10   16      |MD  18   28   20   23   29   18   30   20   21   22    19

Table 3.1673.4   GPS week: 1673   Day: 4   MJD: 55959.000                            

        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  |    8   20    5   10   14    3   14   10   12   15    4 |    19   28   19   22   31   20   33   24   23   22    20
   2  |    9   24    7    7   16    4   18    8    8   33    4 |    16   29   17   18   23   15   27   18   15   27    14
   3E |   19   21    9   14   20    7   17   18   28   25    6 |    19   28   25   26   36   22   33   30   36   29    23
   4  |   10   15    5    6   15    4   11   13    7   15    3 |    25   26   27   30   34   28   31   30   30   32    26
   5  |    7   12    6    9    9    5   14   10    9   18    3 |    22   26   26   33   34   26   30   24   27   24    24
   6E |   12   19    8    9   20    3   17   20   17   22    5 |    26   31   25   27   37   27   35   40   29   29    26
   7  |    9   18    5   10   13    3   12    8    6   10    3 |    16   28   17   23   25   15   25   14   16   16    15
   8  |   11   12    4    8   16    6   12   10   11    9    3 |    12   21   14   17   18   13   21   16   13   16    11
   9  |    9   18    6   10   12    4   11   12    9   15    3 |    16   24   16   23   19   14   25   16   12   13    14
  10  |    9   13    5    6   12    2    9    7    9   15    3 |    20   25   22   27   29   23   27   26   25   23    22
  11  |    7   22    4   11   25    4   12    8   10   18    4 |    19   33   27   36   48   26   33   27   24   19    26
  12  |    8   24    5   12   14    5   14   10    9   23    4 |    14   30   17   25   26   15   25   13   15   10    14
  13  |    8   21    6   10   27    4    9   10    9    9    4 |    15   28   16   21   39   14   24   19   18   18    15
  14  |    8   22    5    7   19    4   10    7   10   15    3 |    11   25   12   18   27   11   17   14   13   19    11
  15  |    7   22    6    9   20    5   16    8    8   10    4 |    15   27   18   23   32   14   27   16   13   16    15
  16  |    7   28    7   10   11    4   17   10   11   20    4 |    15   31   19   22   26   17   29   18   13   19    16
  17E |    8   17    6    8   15    5   14   11   12   12    3 |    29   34   25   23   29   28   31   34   34   25    26
  18  |    9   19    7   20   12    4   12   10   10   33    5 |    20   28   22   38   26   20   24   24   22   35    20
  19E |    7   18    6   11   13    5   13    9   15   17    4 |    30   34   36   36   40   35   38   32   33   40    33
  20  |    9   15    6   17   13    5   10   11   10   33    4 |    27   29   27   27   32   26   32   30   26   31    26
 X21  |   12  ---    8   10   14    4   15    9   10   20    4 |    22  ---   18   18   24   19   25   22   19   25    17
  22  |    7   16    7   10   12    5   11    9    9   19    3 |    24   24   27   29   32   24   27   26   24   25    24
  23  |    7   27    6   12   22    4   15   10   12   11    4 |    14   30   16   22   31   14   26   16   16   16    14
 X24  |    6  ---  ---  ---  ---  339  ---  ---  ---  ---    0 |    19  ---  ---  ---  ---  173  ---  ---  ---  ---    20
  25  |   10   18    6   10   12    5   15   10    5   10    3 |    12   18   15   15   24   12   26   12   12   10    11
  26  |   13   23    8    9   15    8   12   12    8   27    4 |    18   26   16   18   23   11   22   14   12   28    12
 X27  |   12   24    7   10   14    5   10   15    8  ---    4 |    14   30   18   22   21   15   25   18   16  ---    15
  28  |    9   17    5    8   12    4   12   10    7   12    3 |    16   27   18   21   26   16   25   17   15   15    15
  29E |    7   25    6    8   18    4   16    9    9   13    4 |    30   37   29   27   32   27   31   32   31   33    29
 X30  |    8   16    5    9   16    3    9   10    7  ---    3 |     9   22   15   17   18   12   22   14   10  ---    11
  31  |    8   21    6    8   14    6   14    8   10    9    3 |    11   23   16   20   31   13   26   14   12   11    14
  32  |    8   13    4    7   15    5   12   12    9   28    4 |    18   24   20   23   30   21   29   24   22   25    20
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |    9   20    6   10   16    5   14   11   11   19      |T   18   27   20   24   29   23   27   21   20   22    18
 WRMS |    9   20    6   10   14    4   13   10    8   16      |NE  17   26   19   23   28   23   26   19   17   20    17
 MEDI |    8   19    6   10   14    4   12   10    9   15      |MD  18   28   18   23   29   17   27   19   18   23    16

Table 3.1673.5   GPS week: 1673   Day: 5   MJD: 55960.000                            

        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    6   14   18    6   13   11    7   19    4 |    15   27   19   18   33   15   29   17   14   19    17
   2  |    7   22    7   16   19    4   19   12    9   33    5 |    22   28   20   21   24   19   26   22   21   33    19
   3E |   17   21    8   19   23    5   18   15   25   27    6 |    12   28   23   27   37   19   29   26   32   28    22
   4  |   10   12    6   15   17    5   12   12   10   14    4 |    14   16   14   21   24   15   16   18   20   23    15
   5  |    8   12    6   13   13    3   15   10    9   20    3 |    19   25   23   30   28   22   28   21   21   22    22
   6E |   12   18    9   15   20    3   17   25   16   20    5 |    24   27   23   26   35   22   30   36   24   26    22
   7  |    8   20    7   12   16    3   17   11    8   12    4 |    10   23   15   18   26   10   24   12   12   14    12
   8  |   12   15    7   11   21    6   17   13    7   10    4 |    12   21   14   16   18   10   23   15   12   15    11
   9  |    8   17    5   12   18    4   15   12    7   16    4 |    13   25   15   23   18   13   28   16   16   16    14
  10  |   10    9    7   11   14    4   14    8    9   18    3 |    12   18   18   22   23   15   22   18   16   16    15
  11  |    7   17    5   14   26    7   12   10   11   17    4 |    15   32   25   32   48   21   30   21   21   14    22
  12  |   11   23    5   16   16    4   16    8    6   21    4 |    17   31   19   25   27   14   28   12   16   15    17
  13  |   10   16    6   16   28    4   11   12    8    9    4 |    16   25   16   25   41   15   25   20   18   19    17
  14  |    7   21    5    9   21    3   13    8    5   15    3 |    17   28   16   19   30   15   17   13   14   19    15
  15  |    9   19    6   12   18    5   15    8   10   13    4 |    12   27   16   20   31   13   23   15   15   16    14
  16  |    9   25    7   14   13    4   16   12    7   21    4 |    19   29   23   24   25   19   26   15   17   19    19
  17E |    7   13    5   13   16    6   16   12    8   13    3 |    25   24   21   18   23   25   24   32   27   25    23
  18  |    7   18    8   29   14    3   13   10    9   35    5 |    19   26   20   45   22   19   26   20   22   35    19
  19E |    7   20    6   12   13    4   14   12   10   12    3 |    29   32   36   38   42   33   36   31   27   32    32
  20  |    7   15    7   16   11    7   14    8    5   34    4 |    23   29   29   24   30   23   32   22   22   23    24
  21  |    7   23    7    9   16    6   15    8    8   23    4 |    16   22   14   13   24   18   18   18   21   23    15
  22  |    5   13    6   11   10    4   12    9    8   21    3 |    25   27   26   30   27   26   29   26   27   27    25
  23  |    8   23    6   13   21    4   15   12   10   11    4 |    15   25   17   20   33   14   26   17   16   17    16
 X24  |    6  ---  ---  ---  ---  207  ---  ---  ---  ---    0 |    12  ---  ---  ---  ---   84  ---  ---  ---  ---    14
  25  |    9   16    5   12   13    5   13    9    6    9    3 |    18   24   19   18   26   16   29   13   19   15    17
  26  |   11   16    7   16   16    7   18   14    7   27    4 |    15   24   16   20   21   16   26   15   15   29    15
 X27  |   10   18    6   13   18    4   16   14    7  ---    4 |    12   25   16   23   19   14   28   16   18  ---    14
  28  |    7   19    5   12   12    5   12    9    9   15    3 |    12   28   15   18   25   13   25   14   17   12    13
  29E |    6   19    6    9   12    5   18   11    9   13    3 |    28   31   26   22   27   25   30   33   31   34    28
  30  |    7   14    5   15   18    3   10   12    5   15    3 |    10   21   19   16   16   15   18   14   11   21    14
  31  |    7   18    5   15   14    3   18    8    8   11    3 |    13   25   18   22   31   16   26   13   16   14    16
  32  |    7   14    6   11   14    5   12   10    9   31    4 |    17   23   24   25   28   18   29   15   19   19    20
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |    9   18    6   14   17    5   15   11   10   20      |T   16   25   19   23   27   19   26   19   19   21    18
 WRMS |    8   18    6   13   17    5   14   10    7   17      |NE  15   25   18   22   26   18   25   16   17   19    16
 MEDI |    7   18    6   13   16    4   15   11    8   16      |MD  15   25   19   22   27   16   26   17   18   19    17

Table 3.1673.6   GPS week: 1673   Day: 6   MJD: 55961.000                            

        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  |    8   16   10   14   17    5   12   12   10   20    4 |    16   20   19   25   31   18   28   26   20   23    18
   2  |   10   23    6   11   18    5   17   10    6   36    5 |    20   32   20   23   25   20   25   23   22   39    19
   3E |   21   21    9   15   25    7   16   20   25   31    6 |    17   31   25   29   40   21   31   31   29   35    22
   4  |   10   11    4    7   17    5   10    8    8   12    3 |    23   22   26   29   37   27   26   30   30   34    26
   5  |    8   12    6   10   13    4   14    9    6   25    3 |    31   33   35   40   43   35   38   34   32   34    33
   6E |   14   21    8   13   23    7   17   22   16   23    6 |    26   32   30   26   30   30   29   47   37   29    29
   7  |    8   15    7    8   15    5   14   13    8   12    3 |    14   21   17   21   26   13   23   16   18   16    15
   8  |   11   17    5    8   19    4   10   16    8   11    4 |    10   20   11   18   15   10   18   18   11   15    10
   9  |    8   18    7    7   14    5   15   12   12   17    4 |    11   22   14   21   17   11   23   16   15   18    12
  10  |   10   11    4    7   15    4    8    8    7   22    3 |    25   28   30   35   38   31   31   33   30   29    29
  11  |    6   18    7    9   25    6   10    9    9   19    4 |    15   26   25   27   46   20   28   23   21   17    21
  12  |    9   25    6   14   20    6   16    6   11   22    4 |    15   34   18   29   29   16   26   14   20   16    17
  13  |    9   16    5   10   29    5   11   12    8   10    4 |    11   22   15   24   39   11   21   16   12   16    13
  14  |    8   20    6   10   19    4    9   10    8   18    3 |    12   23   12   18   26   11   16   16   14   22    11
  15  |    6   24    5    8   18    5   14    9    9   14    3 |    14   29   15   23   30   11   22   14   14   17    13
  16  |    9   27   10   13   14    6   17   10   11   21    4 |    17   28   21   23   24   18   27   20   24   21    19
  17E |    8   14    8   14   22    6   15   12    9   15    4 |    31   31   26   24   24   29   27   35   33   25    26
  18  |    9   20    8   24   15    4   13    9    8   39    5 |    27   32   30   49   34   32   32   31   32   42    30
  19E |    8   22    8   11   21    4   14   11   10   13    4 |    36   42   42   43   45   41   42   39   46   50    41
  20  |    7   14    7   20   11    4    9    7    8   35    4 |    33   36   39   36   39   34   38   34   36   33    35
  21  |    9   26   12    9   16    6   16    9   10   25    4 |    23   30   27   25   28   24   26   24   27   28    22
  22  |    6   18    6   12   12    4   11    9    6   21    3 |    30   32   34   37   39   34   31   36   34   34    32
  23  |    7   27    8   12   22    5   14   12   12   14    4 |    13   30   17   22   31   13   23   15   18   15    15
 X24  |    6  ---  ---  ---  ---   38  ---  ---  ---  ---    0 |    14  ---  ---  ---  ---  120  ---  ---  ---  ---    15
  25  |    8   15    5    9   16    5   15    7   10   11    3 |    15   24   20   21   29   17   28   14   20   15    16
  26  |    8   13    8   14   15    8   13   10    8   26    4 |    15   20   11   19   21   10   22   16   12   25    11
  27  |   10   23    8    9   14    4   15   12   12   21    4 |     9   26   15   21   17   11   24   17   17   23    13
  28  |    6   18    8    9   16    6   12    9    8   17    3 |    13   25   19   20   25   15   25   19   17   16    15
  29E |    6   31    6   13   20    8   17   11   10   13    4 |    32   44   28   31   30   32   34   36   31   33    30
  30  |   10   16    7   11   16    6    9    9   10   11    3 |    10   18   19   16   19   14   18   19   18   18    15
  31  |    9   19    8   12   15    4   16    6   10   15    4 |    17   23   19   22   30   17   26   18   17   24    18
  32  |    9   16    5   10   15    4   14    9    7   32    4 |    18   22   23   29   30   21   27   22   21   25    22
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |    9   20    7   12   18    5   14   11   10   21      |T   19   27   22   26   30   23   26   24   23   25    20
 WRMS |    9   20    7   11   17    5   13   10    8   18      |NE  17   26   21   25   29   22   25   21   21   23    19
 MEDI |    8   18    7   11   16    5   14   10    9   19      |MD  16   28   20   24   30   18   26   22   21   24    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 4.1673   GPS week: 1673   MJD: 55955.0-55961.0

CENT| CLK EPO  |        BRUS       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3000 |U    6     6    19 |U   15    14    52 |U   16    14    44 |
emr | emr 2953 |     9     9    22 |U   17    15    55 |    16    18    52 |
esa | esa 2976 |     6     6    20 |U   14    13    48 |    14    11    47 |
gfz | gfz 2967 |U   13     7    21 |U   19    16    58 |U   21    12    52 |
grg | grg 2974 |     9    11    33 |U   17    14    61 |    19    16    59 |
igr | igr 2965 |     6     6    19 |    14    13    50 |    16    12    34 |
igs | igs 2958 |     6     6    19 |    14    13    48 |    16    14    42 |
jpl | jpl 2967 |U   12     9    27 |U   16    15    52 |    25    19    93 |
mit | mit 2976 |U    7     8    18 |U   17    14    55 |U   22    16    67 |



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 5.1673.0   GPS week: 1673   Day: 0   MJD: 55955.0

CENT| CLK EPO  |        BRUS       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 2975 |     5     4    16 |    12     8    44 |    18    17    46 |
emr | emr 2968 |     7     9    18 |    13    11    37 |    19    21    58 |
esa | esa 2976 |     6     4    21 |    10     7    44 |  ----  ----  ---- |
gfz | gfz 2969 |    16     9    19 |    17    16    57 |  ----  ----  ---- |
grg | grg 2976 |    11    13    52 |    14     8    44 |    28    23    64 |
igr | igr 2975 |     6     4    23 |    11     8    42 |  ----  ----  ---- |
igs | igs 2971 |     5     4    19 |    11     8    37 |    18    16    44 |
jpl | jpl 2968 |    22    10    38 |    12    10    39 |    16    14    47 |
mit | mit 2976 |     6     5    14 |    14     8    50 |  ----  ----  ---- |

Table 5.1673.1   GPS week: 1673   Day: 1   MJD: 55956.0

CENT| CLK EPO  |        BRUS       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 2972 |     8    11    20 |    10    13    28 |     9    10    17 |
emr | emr 2964 |     9    11    22 |    11    11    29 |     9    15    27 |
esa | esa 2976 |     6     9    18 |    10    12    27 |     9    12    23 |
gfz | gfz 2964 |    17    10    19 |    22    18    49 |    40     9    65 |
grg | grg 2972 |     7    11    24 |    10    11    37 |    11     7    19 |
igr | igr 2929 |     7    11    17 |    10    12    30 |    16    10    37 |
igs | igs 2904 |     7    10    18 |     9    11    28 |     8     8    21 |
jpl | jpl 2964 |    20    14    21 |     9    11    29 |     7     8    47 |
mit | mit 2976 |     7    11    18 |    12    13    41 |    12    11    33 |

Table 5.1673.2   GPS week: 1673   Day: 2   MJD: 55957.0

CENT| CLK EPO  |        BRUS       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 2975 |     5     4    19 |    15    16    63 |    51    35   183 |
emr | emr 2967 |     7     6    16 |    16    17    65 |    47    42   184 |
esa | esa 2976 |     5     4    20 |    15    14    57 |    48    24   209 |
gfz | gfz 2968 |    22     7    28 |    28    18   104 |    55    33   186 |
grg | grg 2975 |     9    14    39 |    22    16    69 |    49    32   240 |
igr | igr 2958 |     5     4    20 |    16    15    62 |    50    27   115 |
igs | igs 2972 |     5     4    19 |    16    15    59 |    58    42   177 |
jpl | jpl 2967 |     8     6    25 |    17    14    64 |   117    68   480 |
mit | mit 2976 |     6     6    19 |    23    19    60 |    77    26   277 |

Table 5.1673.3   GPS week: 1673   Day: 3   MJD: 55958.0

CENT| CLK EPO  |        BRUS       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 2976 |     5     8    26 |    15    15    54 |     7     9    15 |
emr | emr 2968 |    11     7    22 |    19    17    59 |     8    12    19 |
esa | esa 2976 |     6     7    26 |    14    14    54 |     8     8    12 |
gfz | gfz 2968 |    18     6    25 |    17    12    46 |     9    10    18 |
grg | grg 2975 |     8     9    27 |    17    13    67 |    11    11    18 |
igr | igr 2972 |     6     6    22 |    14    13    56 |     8     9    11 |
igs | igs 2975 |     6     5    21 |    15    14    56 |     8     9    10 |
jpl | jpl 2968 |     8     7    24 |    16    15    60 |     8     7    13 |
mit | mit 2976 |     7     6    17 |    18    14    63 |    11    11    17 |

Table 5.1673.4   GPS week: 1673   Day: 4   MJD: 55959.0

CENT| CLK EPO  |        BRUS       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3029 |     7     4    18 |    18    14    56 |    13    15    15 |
emr | emr 2872 |    12    16    32 |    23    15    66 |    15    17    25 |
esa | esa 2976 |     7     6    21 |    18    13    58 |    10    17    13 |
gfz | gfz 2969 |     7     8    19 |    18    14    56 |    11    14    16 |
grg | grg 2974 |     7     5    21 |    20    14    71 |    12    15    18 |
igr | igr 2975 |     8     7    19 |    18    13    60 |    11    17    14 |
igs | igs 2963 |     7     6    21 |    18    13    52 |    13    17    15 |
jpl | jpl 2968 |    10    11    29 |    21    15    59 |    14    15    21 |
mit | mit 2976 |     7     9    18 |    19    14    57 |    12    22    14 |

Table 5.1673.5   GPS week: 1673   Day: 5   MJD: 55960.0

CENT| CLK EPO  |        BRUS       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3047 |     5     6    18 |    19    20    62 |     7     6    16 |
emr | emr 2968 |     9     7    22 |    22    21    62 |     9     9    24 |
esa | esa 2976 |     6     5    19 |    17    18    57 |     6     4    14 |
gfz | gfz 2968 |     6     5    17 |    18    17    52 |     6     5    16 |
grg | grg 2976 |     9    13    39 |    21    20    80 |     8     9    20 |
igr | igr 2976 |     6     5    17 |    18    17    56 |     5     5    14 |
igs | igs 2960 |     6     5    19 |    18    17    52 |     6     5    15 |
jpl | jpl 2967 |     8     7    26 |    20    19    65 |     7     8    23 |
mit | mit 2976 |     7     8    27 |    19    19    63 |     8    12    30 |

Table 5.1673.6   GPS week: 1673   Day: 6   MJD: 55961.0

CENT| CLK EPO  |        BRUS       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3027 |     7     9    19 |    14    15    56 |     4     6    15 |
emr | emr 2968 |    10    10    24 |    15    16    70 |     7    11    25 |
esa | esa 2976 |     7     7    17 |    14    14    45 |     4     3    12 |
gfz | gfz 2969 |     7     7    19 |    14    14    45 |     4     3    11 |
grg | grg 2973 |    10    14    33 |    16    14    59 |    13    14    35 |
igr | igr 2976 |     6     6    15 |    14    13    49 |     3     3    13 |
igs | igs 2961 |     7     6    16 |    15    14    52 |     4     3    12 |
jpl | jpl 2968 |     9     9    25 |    17    19    50 |     6     9    21 |
mit | mit 2976 |     7     8    14 |    16    15    51 |    12    13    31 |


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

Table 6.1673   GPS week: 1673   MJD: 55955.500-55961.500

                                                         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     -25     107     112     -1 |       3     15
            |      21      22      83      60      5 |       3
emr   uuuuu |      31       5      12       2     -5 |       8     20
            |      21      23      30      64      5 |       6
esa   uuuuu |      -1     -25      17      24      5 |      -6     18
            |      16       7      83      43      6 |       3
gfz   uuuuu |     -35      15     -12      79      2 |       7     17
            |       4      25     116      64      3 |       3
grg   uuuux |      15       2     131    -162     69 |      41     59
            |      15      12      42      40     26 |      16
igr   xxxxx |     -31      21      65      42      2 |      -4     17
            |      12      19      65      42      4 |       3
irf   xxxxx |      -5       2     -14     -49      2 |       0     12
            |       9       9      34      22      5 |       2
jpl   uuuuu |      31     -27     127      58     10 |      -9     22
            |      27      33      71      95     12 |       3
mit   uuuuu |     -22      -3    -119     -88      0 |      12     18
            |      19      12      60      49      3 |       2
ngs   uuuuu |     -24      45     -33      47      1 |       0     12
            |      47      37      77      85      5 |       2
sio   uuuuu |      83      19     -78     -41    -14 |      12     19
            |      21      15      62      49      6 |       4


Table 7.1673.0   GPS week: 1673   Day: 0   MJD: 55955.500

                                                         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 |      56     -40     120      38      4 |       6     18
emr   uuuuu |      21      54      11     -26     -8 |      15     26
esa   uuuuu |       7     -26     -31      47      6 |      -6     18
gfz   uuuuu |     -40      51    -144       6      2 |       9     18
grg   uuuux |      17       3      69    -213     37 |      28     44
igr   xxxxx |     -28      -3      43       0     -2 |      -2     19
irf   xxxxx |      -8       9     -28     -64      3 |       1     16
jpl   uuuuu |       1     -13     214     -23     -8 |      -7     23
mit   uuuuu |     -38       1     -77     -38      3 |      14     20
ngs   uuuuu |      14     -24      59     108      2 |       1     16
sio   uuuuu |      55      34     -32     -61     -5 |      16     23

Table 7.1673.1   GPS week: 1673   Day: 1   MJD: 55956.500

                                                         AC LOD  AC LOD
CENT  FLAG  |   Xpole   Ypole     Xrt     Yrt    LOD |    BIAS  BIAS RMS
            |   [uas]   [uas]   [uas/d] [uas/d]  [us]|    [us]    [us]
------------+----------------------------------------+------------------
cod   xxxxx |       9       3      67      91     -5 |       5     17
emr   uuuuu |      57       6      12     121     -8 |      12     23
esa   uuuuu |     -15     -23     -18     -16      8 |      -7     18
gfz   uuuuu |     -34      -5     -45      66      3 |       7     17
grg   uuuux |       6      17      97    -103     65 |      29     45
igr   xxxxx |     -45      39      44      36      1 |      -4     19
irf   xxxxx |     -10       5     -20      -6     -3 |      -1     14
jpl   uuuuu |      33     -39      68     -16     17 |     -11     23
mit   uuuuu |     -43      -1     -67      -5     -1 |      13     19
ngs   uuuuu |      25      56      47     -31     -4 |      -1     14
sio   uuuuu |      72      15      -9      62    -12 |      14     21

Table 7.1673.2   GPS week: 1673   Day: 2   MJD: 55957.500

                                                         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 |      59     -18     152     151     -3 |       8     16
emr   uuuuu |      47       1      63     -80    -10 |      15     23
esa   uuuuu |      -4     -34     -88       1     -6 |      -2     14
gfz   uuuuu |     -38       2     111      87     -2 |      12     18
grg   uuuux |      36      -4     115    -168     68 |      34     54
igr   xxxxx |     -11      43      86      69     -2 |       0     16
irf   xxxxx |       8      -6      42     -39      8 |       3     11
jpl   uuuuu |      25     -21      13     -22     -2 |      -5     21
mit   uuuuu |      -1      -2     -43    -100      3 |      16     20
ngs   uuuuu |     -64      73     -31     208      8 |       2     11
sio   uuuuu |     110      12     -36     -56     -8 |      17     21

Table 7.1673.3   GPS week: 1673   Day: 3   MJD: 55958.500

                                                         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 |      20     -65     118     147      4 |       3     16
emr   uuuuu |      20      -7     -20      43    -12 |       8     21
esa   uuuuu |       1     -27     -39      73     -1 |      -7     18
gfz   uuuuu |     -37     -12     157       1      0 |       7     16
grg   uuuux |       2      -6     164    -211     75 |      31     48
igr   xxxxx |     -26      14     105       1      4 |      -6     17
irf   xxxxx |      -1     -13      20     -74      9 |       0     13
jpl   uuuuu |      80      32     175     194      8 |     -11     22
mit   uuuuu |      -7     -28    -111     -93      0 |      12     18
ngs   uuuuu |     -66      93    -107     -30      6 |       0     12
sio   uuuuu |      92      -4     -61     -47    -11 |      12     20

Table 7.1673.4   GPS week: 1673   Day: 4   MJD: 55959.500

                                                         AC LOD  AC LOD
CENT  FLAG  |   Xpole   Ypole     Xrt     Yrt    LOD |    BIAS  BIAS RMS
            |   [uas]   [uas]   [uas/d] [uas/d]  [us]|    [us]    [us]
------------+----------------------------------------+------------------
cod   xxxxx |       5     -13     133     136     -2 |      -1     14
emr   uuuuu |      -4      -2      31     -21      2 |       1     16
esa   uuuuu |      20     -15     103      79      8 |     -11     19
gfz   uuuuu |     -29       1      22      78      4 |       3     13
grg   uuuux |       4       6     156    -138     77 |      39     56
igr   xxxxx |     -28       4     162       3      6 |     -10     16
irf   xxxxx |      -3       4     -25     -54      0 |      -3     10
jpl   uuuuu |      20     -29     154      -3     26 |     -15     22
mit   uuuuu |     -17       5    -201    -143     -4 |       8     15
ngs   uuuuu |     -54      40    -152      32     -2 |      -3     11
sio   uuuuu |     105      15    -140     -54    -22 |       8     18

Table 7.1673.5   GPS week: 1673   Day: 5   MJD: 55960.500

                                                         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     -26     -53     192     -7 |       3     15
emr   uuuuu |      32     -14      14     -26      0 |       4     18
esa   uuuuu |     -28     -19      52      13      9 |      -6     18
gfz   uuuuu |     -36      25     -38     176      3 |       6     16
grg   uuuux |       6      17     126    -148    116 |      53     71
igr   xxxxx |     -34      13      69      78      8 |      -6     16
irf   xxxxx |     -21      10     -64     -47      3 |       1     12
jpl   uuuuu |      52     -76     171     112      9 |      -9     23
mit   uuuuu |     -44      -2    -168    -127     -3 |      12     17
ngs   uuuuu |      36      51      -3      18      2 |       0     11
sio   uuuuu |      61      19    -178     -36    -21 |      10     18

Table 7.1673.6   GPS week: 1673   Day: 6   MJD: 55961.500

                                                         AC LOD  AC LOD
CENT  FLAG  |   Xpole   Ypole     Xrt     Yrt    LOD |    BIAS  BIAS RMS
            |   [uas]   [uas]   [uas/d] [uas/d]  [us]|    [us]    [us]
------------+----------------------------------------+------------------
cod   xxxxx |      22     -13     213      32      5 |       1     12
emr   uuuuu |      45      -3     -24       3     -2 |       3     16
esa   uuuuu |      12     -32     140     -30     11 |      -5     19
gfz   uuuuu |     -32      44    -143     139      7 |       6     16
grg   uuuux |      36     -16     190    -154     45 |      71     92
igr   xxxxx |     -46      38     -50     105      0 |      -5     16
irf   xxxxx |       1       7     -22     -56     -2 |       1     12
jpl   uuuuu |       8     -43      94     161     20 |      -8     23
mit   uuuuu |      -3      10    -167    -108      0 |      11     16
ngs   uuuuu |     -61      27     -43      27     -2 |       0     11
sio   uuuuu |      86      42     -89     -92    -16 |       7     15



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