[IGSREPORT-20590] Wk 1674 IGS Final Orbits

IGS ACC igs.acc at noaa.gov
Thu Feb 23 06:02:59 PST 2012


Author:  AC Coordinator / NOAA NGS

sum-file Version 2.0
Final IGS Orbit Combination - Week 1674   (Feb 05, 2012 - Feb 11, 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:

igs1674[0-6].sp3  IGS GPS ephemeris files in SP3 format.
igs1674[0-6].clk  IGS GPS satellite and station clocks in clock RINEX format.
igs1674[0-6].cls  IGS GPS clock combination summary report.
igs16747.erp      Earth Rotation Parameters (ERP) and their rates as well as
                  Universal Time (UT1-UTC) and Length Of Day (LOD) associated 
                  with IGS ephemerides.
igs16747.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  |  EMR   | 6 6
                0  |  ESA   | HYDE HYDE KERG
                0  |  GFZ   | NYAL
                0  |  GRG   | AMC2
                0  |  JPL   | 3 6 29 YAKT
                0  |  MIT   | 6 6 CAS1 DAV1 TOW2 CAS1
                1  |  COD   | NRIL
                1  |  EMR   | 6 6
                1  |  ESA   | HYDE HYDE MATE
                1  |  GFZ   | 5 30 BRFT DAV1 GMSD HOLB KARR KIRU MATE STHL
                1  |  GRG   | USN3
                1  |  JPL   | 6
                1  |  MIT   | 6 16 6 CAS1 MAW1 CAS1 MAW1
                2  |  COD   | NRIL
                2  |  EMR   | 6 6
                2  |  ESA   | HYDE TIXI WHIT DUBO HYDE TIXI WHIT
                2  |  GFZ   | 5 30 ASPA BRFT DAEJ DUBO GMSD HOLB HRAO KARR KIRU
                2  |  GFZ   | METS PIMO STHL THU3 TSKB WHIT WUHN YELL
                2  |  GRG   | USN3
                2  |  JPL   | 6
                2  |  MIT   | 6 18 6 18 TOW2
                3  |  COD   | CAS1 SOFI
                3  |  EMR   | 6 YELL YELL
                3  |  ESA   | MAR6 NKLG
                3  |  GFZ   | 30 ABPO ALBH BRFT DAV1 DGAR FAIR HOLM HRAO KERG MAS1
                3  |  GFZ   | OHI2 PDEL QAQ1 SANT STHL SUTM THU3 YELL
                3  |  GRG   | AMC2 KIT3
                3  |  JPL   | 6
                3  |  MIT   | 6 CAS1 DAV1 GRAZ MAR6 CAS1 DAV1 GRAZ
                4  |  COD   | SOFI
                4  |  GFZ   | 30 BRFT CRO1 FAIR MATE MDO1 NRC1 STHL THU3
                4  |  GRG   | AMC2
                4  |  MIT   | 22 26 28 22 26 28 DAV1 DAV1
                5  |  COD   | 26 26 MOBS SUTM
                5  |  ESA   | UNSA
                5  |  GFZ   | 26 BOGT BRFT CRO1 DGAR GRAZ KERG MDO1 PALM PDEL STHL
                5  |  GFZ   | SYOG YELL
                5  |  GRG   | AMC2
                5  |  MIT   | 7 23 DAV1 GRAZ DAV1 GRAZ
                6  |  COD   | MOBS MOBS NKLG SOFI XMIS
                6  |  ESA   | DAV1
                6  |  GFZ   | BRFT DGAR DRAO HOLM KERG MIZU PDEL PRDS STJO YAKT
                6  |  GFZ   | YELL
                6  |  GRG   | ADIS USN3
                6  |  MIT   | 7 8 22 7 8

 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
               ----+------------+----------
               G14 | 2012_02_07 | 2012005 

 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 G03 |    |    |    |  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  |   -1.7    -.4   -2.3     -49      6     -8     .36
       EMR  |   11.6    2.4   18.4     -28     -9     21     .51
       ESA  |    8.8    2.7   -5.1      38   -197     80     .30
       GFZ  |   -2.2     .3   -2.5     -66     32     11     .49
       GRG  |    7.2    1.3   -2.5      -7     24     -8     .42
       JPL  |    3.1   -1.2   24.8     -41    -36     22     .57
       MIT  |    9.5   -1.9    2.3     -32     16    -49     .35
       NGS  |   11.2   -3.7    1.0     -16    -53     73     .54
       SIO  |    9.1    -.9   17.7     -34   -134     78     .25


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

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

11. Starting 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 1.1674.a). It also displays the computed satellite
position sigmas for the combined orbits (table 1.1674.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 2.1674.[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 3.1674.[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 5.1674.0-6).

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 1674 summary.                       (Feb 05, 2012 - Feb 11, 2012)

Table 1.1674.a   GPS week: 1674   MJD: 55962.000-55968.000

         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  251|    0     0     1    41   -70   -10  -.40   10   10 |    -422    -432     20     95
        |    0     0     1    11    18    25   .02           |     356    1056
emr   93|    1     2    11     0   -39   -57   .30   19   19 |    2506    -282     15    113
        |    2     1     1    16    13    15   .06           |     823     710
esa  131|    1     0     0   -76   157    18   .15    8    9 |    -822    1466     14    170
        |    1     0     1    12    15    15   .02           |    1391    1591
gfz  188|    0    -1    -3   117  -115    -7   .44   15   14 |      32       4     35    124
        |    0     1     2    26    52    12   .02           |     205     413
grg  124|    1     0    -2   -46   -97    -5   .59   16   15 |      13    -234     51    217
        |    0     0     0    17    13    12   .09           |     253     636
igr  n/a|    0     0    -1   -42   -62   -16  -.14    5    5 |   -5015     323     21     87
        |    0     0     0    10    17    17   .03           |     994     715
jpl  161|    0     0     7    23    23   -15   .45   15   15 |    3101    -413     18    103
        |    1     1     1    14    22    13   .02           |     840     716
mit  261|    0    -1    -5    19  -115   -15  -.44   12   11 |    2323    -659     24    190
        |    0     0     0    15    21    10   .03           |    9069   12173
ngs  221|    0     0    -4   -12     3    10  -.26   10    8 |   -3248     271   2174   3777
        |    0     1     1    25    19    17   .05           |    9501   12699
sio  241|   -1     0     4     0   219    73  -.34   21   20 |     ---     ---    ---    ---
        |    2     1     0    17    35    13   .06           |     ---     ---


Table 1.1674.b   GPS week : 1674   MJD: 55962.000-55968.000   

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



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 2.1674.0   GPS week: 1674   Day: 0   MJD: 55962.000                            

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  251|    0     1     1    46  -104   -41  -.42   12   11 |    -235   -1812     22     75
        |                     40    47                       |
emr   93|    0     4    11   -24   -40   -41   .22   18   18 |    3514    -813     16    106
        |                      3   -43                       |
esa  131|    2     0     0   -86   143    29   .14    7    7 |   -2423    3208     15    152
        |                     27    11                       |
gfz  188|    0    -2    -4   124   -71    -6   .45   12   11 |      76     -96     33    114
        |                    -21    46                       |
grg  124|    1     1    -3   -44  -119    -3   .51   16   15 |     250    -835     52    242
        |                     25   -28                       |
igr  n/a|    0     0     0   -40   -68   -10  -.12    5    5 |   -6327     151     20     89
        |                    -31    12                       |
jpl  161|   -1    -1     6    33    -8    -1   .43   15   14 |    3795    -469     18     92
        |                    -25   -24                       |
mit  261|   -1     0    -4    24  -101   -10  -.49   12   10 |    -510      96     24    196
        |                    -20    -4                       |
ngs  221|    1     0    -4     8   -18    -7  -.27   11    9 |    -306   -1704   1989   4011
        |                    -74    82                       |
sio  241|   -5    -1     4    -1   237    73  -.42   21   17 |     ---     ---    ---    ---
        |                    -39  -126                       |

Table 2.1674.1   GPS week: 1674   Day: 1   MJD: 55963.000                            

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  251|    0     0     0    29   -72    -8  -.40   10   10 |      37   -1115     20    102
        |                      8   -41                       |
emr   93|    6     0    13   -12   -49   -57   .25   19   19 |    3120    -222     18    114
        |                     17   -18                       |
esa  131|    1     0    -2   -77   164    34   .13    8    7 |   -2325    3449     13    151
        |                      9    21                       |
gfz  188|   -1    -3    -4   122   -50    -3   .44   15   17 |     382    -622     34    118
        |                    -11    19                       |
grg  124|    0     0    -2   -12   -96   -16   .53   16   15 |     173    -615     53    202
        |                      0   -26                       |
igr  n/a|    0     0    -1   -48   -75    -5  -.09    5    5 |   -5491     313     21     69
        |                    -12    10                       |
jpl  161|    0    -1    10     6    34   -38   .46   15   15 |    3981    -240     19    108
        |                      0   -76                       |
mit  261|    0     0    -4     9  -146    -7  -.47   12   10 |    -108    -201     23    191
        |                    -12    -2                       |
ngs  221|    0     1    -3     7   -17    -8  -.20   10    8 |       0   -1157   2239   3957
        |                    -68    79                       |
sio  241|   -4    -1     5   -15   163    84  -.32   20   20 |     ---     ---    ---    ---
        |                    -43  -104                       |

Table 2.1674.2   GPS week: 1674   Day: 2   MJD: 55964.000                            

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  251|   -1     1     1    32   -62   -16  -.42   10   10 |    -529    -900     23     98
        |                      3    -6                       |
emr   93|    0     2    12    19   -22   -48   .28   18   18 |    3217    -817     15    116
        |                    -36   -64                       |
esa  131|    1     1     0   -99   147     0   .19    9   10 |   -1753    1655     15    150
        |                     18    34                       |
gfz  188|   -1    -1    -1    94   -69   -12   .41   15   13 |     -82     -19     37    104
        |                     -9    34                       |
grg  124|    2     1    -4   -47   -78   -11   .50   15   15 |     -38     -62     52    229
        |                      1   -44                       |
igr  n/a|    0     0    -2   -44   -61   -34  -.15    5    5 |   -4865    -519     22     93
        |                     -8    29                       |
jpl  161|    0     0     6    39    50   -10   .44   15   14 |    4083   -1186     20    106
        |                      7   -75                       |
mit  261|    1    -2    -5    14  -124    -5  -.47   12   11 |    -135    -139     22    187
        |                     -9    12                       |
ngs  221|    0     0    -7     1   -13    36  -.21   11   10 |    -661    -705   2091   3845
        |                    -31    55                       |
sio  241|   -2     0     5    -1   212    89  -.28   19   19 |     ---     ---    ---    ---
        |                    -34  -115                       |

Table 2.1674.3   GPS week: 1674   Day: 3   MJD: 55965.000                            

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  251|    0     0     1    27   -72    -5  -.40   10   10 |   -1087     927     20     82
        |                     35     0                       |
emr   93|    0     2    12     6   -17   -53   .28   18   18 |    2196    -204     12    104
        |                    -21   -49                       |
esa  131|    1     0     0   -70   140    18   .19    8    9 |    -875    2128     14    141
        |                     -2    41                       |
gfz  188|    0    -3    -2   143  -144    -6   .45   16   16 |    -216     306     35    131
        |                    -54    59                       |
grg  124|    0     1    -3   -50   -90     6   .55   17   16 |    -353     358     40    206
        |                     28   -62                       |
igr  n/a|    0     0    -1   -23   -63   -23  -.14    6    5 |   -5482     461     21     74
        |                    -17    15                       |
jpl  161|    0     1     5    20    34   -26   .43   14   14 |    2861    -399     19    106
        |                     44   -57                       |
mit  261|    0    -1    -6    23  -124   -17  -.43   11   10 |    -491     613     23    156
        |                     -7    11                       |
ngs  221|    1     0    -4   -29    32     6  -.26   11    8 |   -1125     935   2357   4037
        |                    -59    12                       |
sio  241|   -1     0     4    20   207    67  -.26   20   19 |     ---     ---    ---    ---
        |                    -42  -112                       |

Table 2.1674.4   GPS week: 1674   Day: 4   MJD: 55966.000                            

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  251|    0     1     0    53   -65     7  -.38   10   10 |    -552    1046     21     83
        |                     19    -9                       |
emr   93|    3     2    12   -14   -50   -46   .36   22   22 |    1341     647     16     98
        |                    -13   -32                       |
esa  131|    1     0     0   -68   153    -6   .15    8    8 |     724     646     17    152
        |                     14    48                       |
gfz  188|    0    -1    -6   151  -117   -32   .46   18   16 |      28     524     41    123
        |                    -71    41                       |
grg  124|    1     0    -3   -46   -92     7   .66   16   15 |      55      58     58    215
        |                     18   -50                       |
igr  n/a|    0     0    -2   -55   -56   -25  -.17    5    5 |   -5423    1294     22     83
        |                      4    39                       |
jpl  161|   -2    -1     7    42     3    -4   .46   16   15 |    2004     539     21    103
        |                     -8   -39                       |
mit  261|    0     0    -4    50  -126   -20  -.43   12   11 |    -172     221     35    198
        |                    -23     7                       |
ngs  221|    0     0    -2   -62    11    12  -.22   10    8 |    -706    1019   2414   3527
        |                     43    22                       |
sio  241|   -1     0     4    22   195    47  -.35   20   20 |     ---     ---    ---    ---
        |                    -31  -121                       |

Table 2.1674.5   GPS week: 1674   Day: 5   MJD: 55967.000                            

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  251|   -1     0     0    51   -70   -41  -.38   11   10 |    -217    -708     20    136
        |                     21    -8                       |
emr   93|    0     2    10    16   -46   -77   .37   20   20 |    1662     607     17    139
        |                    -29   -35                       |
esa  131|    2     0     1   -69   178    31   .13   10   10 |      60    -281     13    277
        |                     -7    60                       |
gfz  188|   -1     0     0   112  -173     3   .45   17   16 |    -142     328     33    133
        |                    -56    50                       |
grg  124|    1     0    -2   -59   -98   -23   .71   16   14 |    -282     582     53    221
        |                     21   -28                       |
igr  n/a|    0     0    -2   -49   -82   -29  -.13    5    5 |   -4224    1111     23    108
        |                      4    53                       |
jpl  161|    0     1     6     9     5   -19   .50   16   15 |    2405     297     17    114
        |                     48   -18                       |
mit  261|    0    -2    -6     5  -100    -9  -.39   12   11 |   -4843   18350     22    206
        |                     -4     0                       |
ngs  221|    0     0    -2    -9    13    28  -.29   10    8 |    4422  -20101   2129   3470
        |                    -34    90                       |
sio  241|    1     0     3     3   262    76  -.33   20   19 |     ---     ---    ---    ---
        |                    -23  -155                       |

Table 2.1674.6   GPS week: 1674   Day: 6   MJD: 55968.000                            

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  251|   -1     1     3    47   -42    30  -.42   10   10 |    -371    -463     20     95
        |                     15   -13                       |
emr   93|    3     2     9     3   -44   -79   .35   19   19 |    2497   -1175     14    116
        |                     12   -17                       |
esa  131|    0     0    -1   -63   174    18   .15    9    9 |     837    -541     15    172
        |                      4    48                       |
gfz  188|    0     0    -5    74  -178     2   .44   12   12 |     184    -390     33    145
        |                    -87    35                       |
grg  124|    0     0     0   -68  -107     2   .69   15   13 |     291   -1124     49    210
        |                     27   -28                       |
igr  n/a|    0     0    -2   -32   -28    16  -.18    6    5 |   -3295    -544     21     96
        |                    -29    33                       |
jpl  161|    0    -1     8    10    42    -7   .45   15   15 |    2579   -1434     17     93
        |                     36   -45                       |
mit  261|    1     0    -5    10   -83   -37  -.43   13   11 |   22524  -23559     22    200
        |                    -20     7                       |
ngs  221|    1    -1    -4    -4    16     2  -.34   10    8 |  -24365   23611   1999   3595
        |                    -59    69                       |
sio  241|    1     1     5   -24   256    71  -.38   24   24 |     ---     ---    ---    ---
        |                    -18  -134                       |

       
       
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 3.1674.0   GPS week: 1674   Day: 0   MJD: 55962.000                            

        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   17    6    8   17    4   15   10   11   19    4 |    26   25   24   23   28   22   26   29   26   18    22
   2  |   13   25    6   13   15    5   18    9    6   20    4 |    24   35   22   23   26   23   26   29   24   27    21
   3E |   22   20    8   19   21    8   18   22   26   42    7 |    73   76   74   83   81   73   81   72   83   70    74
   4  |   10   12    6    8   13    5   10   10    9   15    3 |    29   30   33   34   37   30   33   33   30   30    30
   5  |   10   12    4   10   10    6   14   15   10   29    4 |    42   41   43   43   46   41   42   46   42   45    41
   6E |   14   17    8   13   16    5   19   18   17   19    5 |    89   89   89   84   87   88   90   96   90   86    88
   7  |    8   19    7   11   20    3   19   10    8   15    4 |    19   33   28   29   39   23   32   24   21   27    24
   8  |   12   16    6    8   13    5   12    9    9   14    3 |    17   29   22   22   28   19   29   19   16   19    18
   9  |   12   18    7   13   13    5   12   10   11   15    4 |    14   28   14   20   23   16   27   22   18   21    15
  10  |   13   11    5    8   11    3   10   10    7   22    3 |    41   42   52   56   52   46   47   48   48   44    47
  11  |   13   15    7    8   21    3   12   11    8   23    4 |    20   25   24   26   35   20   23   26   23   24    21
  12  |   15   22    5    9   20    5   14   10   10   16    4 |    21   33   21   24   28   23   27   24   23   21    20
  13  |   11   20    7   13   22    5    8    8    8   15    4 |    22   33   27   27   41   23   29   21   21   29    22
  14  |   11   23    5    7   16    3   12    9   10   21    4 |     7   24   12   11   11   12   14   11   13   15    11
  15  |    7   23    5   11   15    4   17    9    8   14    4 |    21   35   20   24   28   20   32   23   20   25    21
  16  |   11   25   13   10   15    5   18   13   10   23    5 |    16   29   19   20   23   16   27   18   18   15    15
  17E |    9   16    7   13   17    4   17   11    9   14    4 |    27   35   27   29   28   28   29   27   29   25    25
  18  |   14   19    9   20   16    4   13   11   15   42    6 |    30   38   42   55   45   41   41   45   42   52    39
  19E |   12   18    8   11   17    4   14   15   13   12    4 |    22   26   21   23   25   18   22   20   23   24    19
  20  |    9   14    6   17   11    4   12   12   10   22    4 |    34   34   41   41   41   37   37   42   39   33    38
  21  |   10   21    9   11   14    4   17   13   11   17    4 |    17   25   22   26   34   20   26   18   20   19    18
  22  |   11   15    6   12   10    4   12   12   10   22    4 |    40   43   48   52   53   46   47   48   46   47    46
  23  |   12   23    7   12   18    6   13    9   11   16    4 |    21   35   21   25   33   22   30   20   22   27    21
 X24  |   10  ---  ---  ---  ---   32  ---  ---  ---  ---    0 |    27  ---  ---  ---  ---   41  ---  ---  ---  ---    28
  25  |   11   15    5    9   20    4   15   10    9   15    4 |    17   24   21   19   32   18   29   19   19   22    17
  26  |    8   17    8   12   11    4   12   10    8   19    4 |    18   25   14   18   16   14   16   14   18   15    13
 X27  |   13   19    6   12   15    5   12   18   10  ---    4 |    23   31   26   27   32   26   34   27   27  ---    25
  28  |    9   19    7   11   20    4   13   10    7   14    4 |    17   30   23   25   34   22   30   22   20   21    20
  29E |   10   24    8   13   20    5   19   12    8   12    4 |    16   28   21   25   27   18   23   22   19   24    18
  30  |   12   12    6   11   12    5   10   10    9   21    3 |    10   18   17   20   19   12   20   16   18   26    15
  31  |   12   19    6   15   21    5   19   10   13   18    4 |    13   24   17   27   34   15   26   17   21   18    18
  32  |   12   14    6   11   12    4   13   10    8   25    4 |    21   22   26   29   31   23   25   29   26   24    25
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |   12   18    7   12   16    5   15   12   11   21      |T   26   33   29   31   35   28   32   29   29   29    27
 WRMS |   11   18    7   11   15    5   14   10    9   17      |NE  22   30   26   28   32   24   29   26   25   26    24
 MEDI |   11   18    6   11   16    4   13   10   10   18      |MD  21   30   23   26   32   22   29   24   23   24    21

Table 3.1674.1   GPS week: 1674   Day: 1   MJD: 55963.000                            

        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   15    9   12   14    6   13   10   10   16    4 |    28   25   22   24   27   24   24   29   25   21    22
   2  |    9   28    7   13   14    4   19    9   10   19    4 |    23   35   21   29   26   22   28   25   24   23    22
   3E |   18   23   12   17   20    8   20   18   18   25    6 |    47   49   49   48   51   49   54   56   50   56    48
   4  |    7   14    6    8   12    6   11    8    9   15    3 |    21   24   26   27   28   25   27   23   25   22    23
   5  |    8   14    5   35   10    4   17   13    9   26    5 |    27   31   26   42   31   27   32   33   27   30    27
   6E |   16   22    9   16   14    5   19   21   18   21    6 |    71   74   68   73   72   71   74   77   75   75    71
   7  |    8   24    9   12   16    5   17    8    8   15    4 |    16   32   22   23   33   18   28   18   17   19    19
   8  |   12   16    7   11    9    6   13    8   11   14    3 |    16   29   19   24   21   17   28   16   15   16    17
   9  |   11   15    8   13   12    6   13   10   11   13    4 |    11   24   12   20   18   14   22   22   16   17    12
  10  |    7   12    5    9   10    4   10   10    7   19    3 |    47   45   48   52   46   47   48   47   44   44    46
  11  |   13   18    8   12   20    7   11   12   12   21    4 |    19   21   18   20   31   18   18   23   19   22    15
  12  |   12   22    9   14   16    6   15   11    8   19    4 |    16   29   14   18   18   14   22   17   19   16    13
  13  |    9   20    9   15   25    6   10    7    9   16    4 |    17   29   19   23   38   15   23   19   13   21    15
  14  |   10   19    3   11   15    3   11   10   13   21    4 |     8   21   10   12   11    9   12   10   15   13    11
  15  |    8   25    7   12   16    4   16   10    8   14    4 |    16   30   18   24   25   17   24   22   17   20    16
  16  |   10   24    9   12   13    6   16   10    8   25    4 |    12   25   15   20   22   12   24   14   13   12    12
  17E |    7   15    7   14   18    5   18   11   10    8    4 |    24   30   25   30   31   23   29   26   21   23    23
  18  |   13   17    7   24   14    4   13   12   10   42    5 |    20   30   27   47   29   27   27   31   31   36    25
  19E |   10   18    9   16   18    6   14   17   11   12    4 |    15   21   21   20   24   14   18   18   20   21    16
  20  |    6   17   10   18   10    4   13   13   10   21    4 |    23   24   27   28   22   23   22   29   22   21    23
  21  |   10   22   10   12   15    5   19    8   13   19    4 |    12   27   22   27   30   17   25   16   22   15    17
  22  |   10   15    5   11   11    4   14   12    8   21    4 |    26   31   32   33   35   30   34   35   34   31    30
  23  |    8   25    6   16   19    4   15    9    8   16    4 |    15   29   15   23   27   14   23   18   16   19    15
 X24  |    7  ---  ---  ---  ---   26  ---  ---  ---  ---    0 |    24  ---  ---  ---  ---   18  ---  ---  ---  ---    24
  25  |   11   11    7   15   18    3   15   11    9   14    4 |     9   20   16   15   27   13   25   15   14   16    13
  26  |    9   16    6   15    9    4   11   10    8   19    3 |    17   22   13   20   17   15   16   15   17   13    13
  27  |   13   17    7   10   12    7   15   15   11   23    4 |    27   26   27   29   31   28   33   32   30   31    27
  28  |    7   19    7   12   14    5   11    8    9   15    3 |    20   34   21   24   32   21   31   22   20   18    19
  29E |    8   19    6   15   25    5   20   16   12   18    5 |    14   21   16   25   26   13   22   21   14   25    14
  30  |   10   12    5   10   15    7   13    9    8   24    4 |    10   18   13   20   21   12   22   16   16   23    13
  31  |   13   19    7   12   19    3   16   13    9   22    4 |    12   23   17   24   33   13   24   15   16   14    15
  32  |    9   14    5   15   10    4   15   10    7   24    4 |    17   19   20   22   18   15   18   21   18   15    17
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |   10   19    8   15   16    5   15   12   10   20      |T   21   28   23   27   29   21   27   25   23   24    21
 WRMS |   10   19    7   17   15    5   15   10    8   20      |NE  18   27   20   25   26   19   25   22   20   21    19
 MEDI |    9   18    7   13   14    5   15   10    9   19      |MD  17   27   21   24   27   17   24   22   19   21    17

Table 3.1674.2   GPS week: 1674   Day: 2   MJD: 55964.000                            

        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   18   12   11   16    5   13   11   12   19    4 |    28   26   23   17   26   24   22   30   29   19    21
   2  |   10   23   10   12   11    5   18    9   10   17    4 |    15   30   20   25   22   17   25   19   20   17    17
   3E |   18   17    9   15   20   10   17   12   13   19    5 |    72   76   77   81   79   73   81   74   73   73    74
   4  |    7   14    6    8   10    5   11    9    8   12    3 |    21   26   26   29   28   24   29   25   27   25    24
   5  |    9   12   11   35   12    5   16   14    9   22    5 |    31   33   34   45   34   33   37   37   33   34    32
   6E |   16   19    9   15   16    5   21   18   17   25    6 |    49   55   50   57   54   50   56   51   50   55    50
   7  |    6   18    9    9   18    5   16    5   10   12    4 |     9   23   18   20   29   12   24   11   17   13    14
   8  |   10   15    7    8   12    5   10   11    9   13    3 |    13   25   19   23   22   15   26   16   16   14    15
   9  |   10   22   11   14   13    3   14   10   10   13    4 |    21   32   25   24   26   21   31   27   25   24    22
  10  |   11   12    5   10   11    5   11   12   10   17    3 |    30   34   34   36   34   33   37   36   37   35    32
  11  |   10   15    9   10   21    7   11   18   13   24    5 |    22   26   24   23   34   20   25   26   25   23    21
  12  |   11   20    8   10   19    5   15   11   11   18    4 |    20   28   18   19   23   18   23   23   21   20    17
  13  |    7   21    8   17   23    3   14   10    9   12    4 |    17   30   18   24   35   15   27   19   17   20    17
 X14  |    7  ---  ---  ---  ---   24  ---  ---  ---  ---    0 |    23  ---  ---  ---  ---   34  ---  ---  ---  ---    29
  15  |    9   22    9   12   15    4   15   10    7   11    4 |    21   36   22   25   27   20   29   24   20   25    21
  16  |   10   22   14   13   15    4   17   10   11   26    5 |    15   27   18   20   25   13   25   14   15   13    14
  17E |    8   15   10   16   20    6   20   13   12   13    5 |    25   33   30   36   36   27   36   29   30   28    27
  18  |   13   16    9   18   14    4   12   13   14   42    6 |    25   34   34   43   34   31   35   36   32   43    30
  19E |   12   27   11   16   16    8   14   22   12   16    5 |    24   35   25   22   25   22   25   23   25   25    21
  20  |    8   13    8   23    9    6   11    9   12   20    4 |    32   29   34   37   32   32   34   36   33   32    32
  21  |    9   19    8   12   13    6   13    9   11   17    4 |    16   26   19   25   33   18   26   17   19   15    17
  22  |   10   13    9   12   12    4   10   11   10   18    4 |    32   37   40   39   40   37   42   38   36   36    36
  23  |    9   26   13   13   15    3   16   13    7   14    5 |    18   33   20   22   26   16   29   20   17   21    18
 X24  |    7  ---  ---  ---  ---   40  ---  ---  ---  ---    0 |    22  ---  ---  ---  ---   18  ---  ---  ---  ---    21
  25  |   12   12    8   16   18    4   17   12   10   13    4 |    15   22   18   16   27   12   28   17   14   15    14
  26  |    7   16   10   13   11    5   13    8   10   14    4 |    18   24   19   20   16   15   14   18   16   13    15
  27  |   12   22   10   15   11    4   11   14    8   24    4 |    19   30   22   26   25   21   29   26   26   31    22
  28  |    8   18    9    9   17    4   13    6   10   15    4 |    21   35   26   30   35   24   35   24   27   22    24
  29E |   10   16   11   14   16    5   17   15   10   23    5 |    16   21   16   24   25   13   24   19   14   31    15
  30  |   12    9   10   14   13    6   15   11   11   21    4 |    11   21   19   20   25   10   22   13   13   22    13
  31  |   12   19    8   11   22    4   18   13    8   15    5 |    13   25   17   23   37   13   27   14   16   14    16
  32  |    8   15    8    8   11    4   15   10   11   23    4 |    20   21   20   25   25   20   27   26   25   21    21
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |   10   18    9   15   15    5   15   12   11   19      |T   22   31   26   29   31   23   31   26   25   25    23
 WRMS |   10   18   10   13   15    5   14   11   10   19      |NE  20   28   23   26   28   20   28   23   23   22    21
 MEDI |   10   17    9   13   15    5   14   11   10   17      |MD  21   29   22   24   27   20   27   24   25   22    21

Table 3.1674.3   GPS week: 1674   Day: 3   MJD: 55965.000                            

        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   17   10   16   19    7   13   11   12   20    4 |    38   32   31   32   31   29   34   35   34   30    31
   2  |   12   22    9   17   14    5   16   11   10   16    4 |    18   28   19   25   25   18   24   20   19   18    17
   3E |   20   19    7   19   24   10   15    8   13   39    6 |    83   84   83   80   86   83   84   81   78   73    80
   4  |    8   12    8   14   10    4   10    9   15   13    3 |    23   25   30   31   30   26   29   26   27   27    25
   5  |   11   13    9   13    7    7   15   11   10   21    4 |    33   35   41   45   41   36   36   40   43   37    37
   6E |   13   22    8   21   22    7   19   15   15   26    5 |    74   78   76   82   80   76   78   78   80   77    76
   7  |    6   20   10   16   20    5   17    6   10   11    4 |    18   28   20   28   34   18   28   16   20   19    19
   8  |   11   19    7   13   12    5   12   11   12   15    4 |    12   28   18   25   23   15   26   15   18   17    15
   9  |   13   21    8   16   14    5   13   10    7   13    4 |    20   34   23   25   26   20   29   21   25   21    22
  10  |   10   15    6   16   13    4   11   12    6   20    4 |    65   62   69   75   66   65   65   68   71   63    67
  11  |   12   15    8   14   21    7    8   13    9   20    4 |    17   21   18   25   31   15   22   24   18   22    17
  12  |    9   21    7   15   17    5   15   11    7   19    4 |    16   27   15   22   22   17   23   21   18   18    14
  13  |    7   17    7   14   22    4    9   10   10   14    4 |    18   30   19   24   34   16   24   17   19   21    18
 X14  |   10  ---    8   18   14    6   12    9    7  ---    4 |    13  ---   19   21   27   14   21   14   13  ---    15
  15  |    9   24    8   17   15    7   16   11    7   16    4 |    18   30   19   25   25   18   24   19   19   20    17
  16  |    8   22   10   18   19    6   17    8    8   25    5 |    14   27   16   23   24   14   25   15   15   15    14
  17E |    8   15   11   15   18    5   21   11   14   12    4 |    21   27   23   28   31   21   30   21   20   23    20
  18  |   11   16   10   20   18    4   13   16    9   41    5 |    29   34   33   45   38   33   33   37   33   44    31
  19E |    8   25    9   21   21    5   12   12   12   17    5 |    16   28   20   24   27   14   21   18   18   22    16
  20  |    8   14    7   16    8    5   14    9   11   20    4 |    35   30   33   39   38   35   37   39   34   35    35
  21  |    9   21   10   18   16    6   17   12   10   18    4 |    15   26   21   26   30   18   24   13   19   14    16
  22  |   10   14    6   20   12    5   12   10    7   20    4 |    35   38   40   49   44   42   40   43   41   44    40
  23  |    6   25    8   14   17    5   11   12   15   18    4 |    18   34   19   22   25   18   25   17   21   22    18
 X24  |    7  ---  ---  ---  ---   38  ---  ---  ---  ---    0 |    29  ---  ---  ---  ---   26  ---  ---  ---  ---    27
  25  |   10   12   10   20   21    5   16   14   13   12    5 |    13   21   16   14   30   12   27   19   19   14    15
  26  |   10   16    8   11   12    6   13    7   10   15    3 |    14   21   12   18   15   10   17   14   20   17    11
  27  |   16   21    7   15   14    6   13   13   10   25    5 |    55   53   59   56   57   55   61   60   60   42    58
  28  |    8   19   11   14   15    4   13    8    9   16    4 |    15   31   22   27   31   18   29   17   19   20    19
  29E |   10   15    6   15   18    4   19   11   11   12    4 |    12   21   16   21   24   13   21   14   19   18    14
  30  |   10   12    9   18   18    7   11    7    7   20    4 |    11   23   20   26   22   12   20   16   18   23    16
  31  |   10   18    8   16   24    4   18   11   11   14    4 |    14   22   17   24   36   14   24   14   18   15    16
  32  |   10   15    8   12   13    5   17    9   13   24    4 |    23   21   22   26   29   24   26   29   21   24    22
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |   10   18    8   16   17    6   14   11   11   20      |T   26   33   28   33   34   26   32   28   28   28    26
 WRMS |   10   18    9   16   16    5   14   10    8   19      |NE  23   30   25   30   32   23   29   25   26   25    24
 MEDI |   10   17    8   16   17    5   13   11   10   18      |MD  18   28   20   26   30   18   26   20   20   22    18

Table 3.1674.4   GPS week: 1674   Day: 4   MJD: 55966.000                            

        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  |   13   22    7   17   14    4   13   14    9   27    5 |    25   22   18   18   18   18   18   25   20   21    16
   2  |   11   27    9   19   13    4   19   10   10   15    4 |    15   29   17   21   22   15   22   19   15   15    13
   3  |   18   20    7   17   22    8   19    9   10   22    5 |    58   64   58   61   63   56   63   57   60   60    58
   4  |    8   17    8   17   13    7   14   10   11   15    4 |    22   29   28   36   33   28   31   25   27   26    25
   5  |    8   18    8   17    7    3   18   11    7   20    4 |    30   31   35   45   35   33   32   33   32   29    31
   6E |   15   20   10   20   22    7   21   16   18   37    6 |    86   84   81   81   79   82   84   87   82   83    82
   7  |    8   22    8   15   14    2   17    9    8   10    4 |    13   27   20   25   32   16   24   18   17   15    16
   8  |   14   19   11   12   13    6   13   12    7   12    4 |    14   28   22   27   26   18   29   20   17   19    18
   9  |   10   24    6   16   18    4   14   17    8   32    5 |    41   51   46   48   42   45   52   51   48   63    45
  10  |    9   16    6   14    9    4   10   11    9   19    3 |    26   28   32   40   31   29   30   32   30   27    30
  11  |   12   19    8   15   22    6   11   15   16   18    5 |    17   22   16   22   34   15   21   23   14   21    14
  12  |   10   24   10   17   14    4   14   10    7   18    4 |    16   30   20   24   21   16   24   23   18   19    15
  13  |    8   20    8   15   22    5   12   11    7   11    4 |    15   29   19   22   36   15   25   21   18   20    17
  14  |   10   23    7   17   16    3   13   11    8   14    4 |    14   27   17   22   25   16   21   17   19   16    18
  15  |    9   29   10   18   13    4   19   10    7   15    4 |    15   33   19   27   25   17   28   20   18   23    16
  16  |   11   24   10   20   16    5   18   11    8   24    5 |    15   29   16   22   23   13   27   16   15   16    14
  17E |    7   19    8   16   19    5   19   12   11   11    4 |    21   31   27   31   34   23   32   21   23   25    22
  18  |   11   17    8   23   16    3   13   16   10   40    5 |    21   29   29   47   33   28   32   35   31   38    28
  19E |    8   30    9   21   17    5   15   11   11   11    5 |    21   30   17   25   25   18   23   20   20   23    17
  20  |    6   18    7   23   11    7   12   10    9   23    4 |    26   30   33   37   34   29   31   35   30   30    30
  21  |   10   25    7   18   15    5   18   13    9   18    4 |    15   29   21   29   35   16   28   18   18   16    18
  22  |   10   18    8   29   14    4   11   12    8   22    4 |    34   36   39   57   44   36   40   41   38   42    38
  23  |    7   27   10   15   16    5   13   12    8   13    4 |    16   30   16   20   26   14   24   18   16   18    15
 X24  |    7  ---  ---  ---  ---   38  ---  ---  ---  ---    0 |    27  ---  ---  ---  ---   39  ---  ---  ---  ---    30
  25  |    9   19    7   19   18    4   14   13    8   11    4 |    17   27   22   22   32   18   31   26   20   24    19
 X26  |   13   22   11   14   14    5  ---   11    9  ---    5 |    17   21   17   21   17   14  ---   18   15  ---    11
 X27  |   13   21    7   15   13    7   15   17    9  ---    5 |    34   43   37   35   38   39   44   35   36  ---    33
  28  |    8   19   11   11   13    4   13    8    8   17    4 |    20   35   27   29   37   21   34   23   21   23    22
  29E |   10   23    7   15   19    5   21   13   11   13    5 |    19   25   20   25   27   17   27   21   21   22    19
  30  |   11   13    8   19   17    7   14   12   11   20    4 |     9   21   15   22   20   10   22   15   13   22    13
  31  |   11   24    7   19   18    5   20   12    7   14    4 |    12   25   17   22   35   10   26   11   16   14    14
  32  |    9   18    6    9   12    6   16   13    9   27    4 |    17   19   18   23   27   18   23   26   18   23    19
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |   10   22    8   18   16    5   16   12   10   20      |T   23   32   26   31   32   24   31   27   25   27    24
 WRMS |   10   22    8   16   15    5   15   11    8   20      |NE  20   29   23   29   30   21   28   24   22   24    21
 MEDI |   10   20    8   17   15    5   14   12    9   18      |MD  17   29   20   25   32   18   28   23   20   23    18

Table 3.1674.5   GPS week: 1674   Day: 5   MJD: 55967.000                            

        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  |   12   19   16   19   18    7   12   12   11   23    5 |    30   23   29   30   25   25   22   30   33   24    23
   2  |   11   23    6   21   16    4   16   13   12   15    5 |    15   28   12   23   25   14   22   20   14   15    14
   3  |   17   17    8   15   28    7   13   11   12   24    5 |    30   34   28   30   36   26   35   28   28   26    27
   4  |    9   14    6   16   12    5   12   12    8   12    3 |    17   24   18   27   28   19   29   21   19   21    19
   5  |    8   14    9   32    8    6   17   13   11   23    5 |    24   28   25   43   30   24   29   27   27   21    24
   6E |   20   21    7   20   17   11   19   16   19   16    6 |   112  111  109  108  110  118  110  115  117  112   111
   7  |    8   18   11   16   14    3   17    8    8   11    4 |    18   27   23   27   31   19   28   22   21   20    20
   8  |   15   19    9   14   16    4   13   10    6   18    4 |    13   28   19   29   25   16   27   20   15   18    17
   9  |   11   23    8   16   13    7   14   13   10   19    4 |    33   40   33   36   34   32   37   37   32   39    32
  10  |   10   14    8   15    9    3   10    9    7   24    4 |    31   32   34   38   34   32   32   36   33   34    32
  11  |   10   15    9   11   23    4    9   11    9   22    4 |    18   24   20   24   33   14   21   20   18   23    15
  12  |    8   21    7   16   15    5   14   11    6   18    4 |    16   25   16   21   18   14   22   21   14   14    14
  13  |    9   20    9   12   25    4   13   10    9   11    4 |    17   32   21   22   38   17   26   22   19   21    18
  14  |    8   24    7   15   20    4   11    9    5   18    4 |    11   26   16   22   27   13   20   16   13   13    14
  15  |    8   23   11   17   14    7   20    9   11   19    5 |    15   29   14   24   25   14   25   17   16   20    14
  16  |   10   24   14   17   15    6   17   12   13   22    5 |    12   27   14   20   22   11   24   14   16   13    12
  17E |    8   17   11   15   12    5   21   12   11   11    4 |    20   31   22   28   34   20   28   19   19   22    20
  18  |   11   17   10   20   14    7   14   14   11   40    5 |    21   29   26   42   31   27   28   32   28   39    26
  19E |    8   24   10   16   17    3   13   12   13   13    4 |    21   29   23   20   26   19   22   20   25   26    18
  20  |    8   17    9   13    8    7   14   11   11   28    4 |    28   25   23   33   27   25   27   31   27   33    25
  21  |    8   23   12   14   15    5   19   10   11   17    5 |    14   27   18   21   33   13   24   16   18   11    16
  22  |   10   15    9   17   12    4   11   11   10   29    4 |    24   33   29   40   37   29   33   33   24   36    29
  23  |    9   24   10   12   17    4   15   10   11   12    4 |    16   31   19   22   26   15   25   16   21   18    16
 X24  |    8  ---  ---  ---  ---   33  ---  ---  ---  ---    0 |    21  ---  ---  ---  ---   16  ---  ---  ---  ---    21
  25  |   11   12   13   15   15    4   16   11    9   12    4 |    23   26   23   24   30   19   33   26   22   22    22
 X26  |   14   18  ---   33   16   10  ---   18   25  ---    9 |    20   20  ---   33   16   11  ---   15   22  ---    11
 X27  |   12  ---    8   14   13    6   14   14    9   25    5 |    43  ---   44   45   45   42   43   44   44   36    42
  28  |   10   21   10   17   10    4   14    7   10   19    4 |    18   35   24   30   33   19   32   19   18   18    20
  29E |   11   24   11   15   15    4   25    9    8   13    5 |    19   27   17   24   22   14   27   19   20   19    17
  30  |    8   12   12   16   13    5   12   11   12   20    4 |    12   22   17   22   19   10   19   15   14   21    12
  31  |   11   24   10   19   16    4   21   11    8   17    5 |    10   24   14   22   33   12   26   11   10   12    11
  32  |   11   19    7    8   12    6   18   20   10   34    5 |    20   23   17   21   24   19   24   28   20   30    18
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |   11   20   10   17   16    5   16   12   10   20      |T   23   30   24   30   31   22   30   26   24   25    22
 WRMS |   10   20   10   16   14    5   15   11    8   19      |NE  20   27   21   28   28   19   27   23   21   22    19
 MEDI |   10   19    9   16   15    5   14   11   10   18      |MD  19   27   21   27   30   19   27   21   20   21    18

Table 3.1674.6   GPS week: 1674   Day: 6   MJD: 55968.000                            

        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   23   10   15   17    6   13   13   11   23    5 |    33   27   20   27   23   26   22   34   28   24    22
   2  |   11   24    6   12   15    4   15   13    9   16    4 |    22   32   24   28   31   21   28   27   23   20    24
   3  |   10   15    7   13   19    5   13   11    8   21    4 |    58   58   58   62   66   55   61   53   58   53    57
   4  |    8   12    7   11   13    7   11   18    9   17    4 |    25   31   34   37   40   30   37   35   34   33    32
   5  |   10   14   10   12    9    3   17   10   11   25    4 |    37   38   45   48   44   41   40   45   42   40    41
   6E |   15   16    7   13   15   10   17   14   11   43    5 |   147  147  145  149  147  140  148  148  138  144   145
   7  |    8   18   10   10   13    4   16    9    7   10    3 |    23   28   28   23   27   20   28   20   20   23    22
   8  |   10   16    8   12   17    4   12   12    6   14    4 |    17   27   20   22   18   16   25   20   18   21    18
   9  |   12   18    8   12   14    4   12   13   10   21    4 |    28   38   28   29   29   27   35   27   33   27    29
  10  |    9   12    7   11   10    3   10   10   10   25    4 |    37   36   39   44   41   37   38   41   37   37    37
  11  |    8   26    7   10   24    5   11    9    5   26    4 |    18   31   22   27   36   17   23   23   20   27    19
  12  |    9   25    9   12   11    4   15   12   13   21    4 |    19   31   18   26   23   17   26   25   17   18    17
  13  |    8   19    7   10   26    5   11   12    8   15    4 |    23   35   22   25   41   19   29   21   22   26    22
  14  |   10   21    9   10   20    5   12   12   11   19    4 |    16   23   19   23   29   16   20   17   17   15    18
  15  |   10   23   11   13   13    6   17   10    6   22    4 |    17   31   17   25   27   16   28   20   18   24    17
  16  |   11   25   14   12   13    5   19   13    7   24    5 |    17   29   15   21   24   15   28   17   16   16    15
  17E |    8   15   11   17   17    5   21   11    8   13    4 |    18   30   26   32   35   20   32   16   21   23    22
  18  |   12   18    7   19   13    5   13   16    9   41    5 |    33   40   35   50   43   35   38   43   35   53    36
  19E |    8   23    9   10   20    5   14   11    9   18    4 |    23   30   26   23   30   21   27   22   26   29    23
  20  |    9   14    7   22   12    7   13   15   10   36    5 |    37   39   40   45   44   42   39   46   41   48    40
  21  |    8   21   11    9   14    3   21   12    7   17    4 |    14   26   19   24   34   14   22   17   14   16    15
  22  |    9   12   10   10   11    8   12   15    8   32    4 |    40   44   45   52   50   44   45   51   44   52    45
  23  |    7   21    7    8   19    5   13   10    9   16    4 |    22   33   20   20   30   18   28   19   19   26    20
 X24  |    8  ---  ---  ---  ---   47  ---  ---  ---  ---    0 |    32  ---  ---  ---  ---   26  ---  ---  ---  ---    31
  25  |   12   15    9   14   11    6   17   11   11   12    4 |    16   20   21   17   23   14   29   18   18   16    17
 X26  |   12   16  ---  ---   14   13  ---   17   16  ---    7 |    16   21  ---  ---   18   14  ---   17   21  ---    13
 X27  |   14   22    7   12   14    5   15   13    9  ---    4 |    30   45   32   30   32   30   38   31   34  ---    31
  28  |    9   18   10   11   10    4   13    9    9   20    4 |    18   35   25   29   31   19   31   20   22   24    22
  29E |    8   21    9   14   12    6   23   12   15   13    5 |    18   29   22   20   26   19   27   18   18   27    18
  30  |   10   14    9   10   14    9   13   10   10   24    4 |    13   24   16   22   22   12   25   17   16   21    16
  31  |   10   27    7   10   15    5   21   13   14   17    5 |    11   27   17   23   31   13   27   13   14   14    14
  32  |   11   16    8   10   14    6   16   25   11   36    5 |    22   24   24   31   33   25   28   37   26   34    25
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |   10   19    9   12   15    6   15   13   10   24      |T   28   35   30   34   36   27   35   30   29   32    28
 WRMS |   10   19    9   12   13    5   15   11    8   24      |NE  23   31   25   29   31   23   30   26   24   27    24
 MEDI |   10   18    8   12   14    5   13   12    9   21      |MD  22   31   24   27   31   20   28   22   22   26    22



Table 4: Precise Navigation Summary.

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

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

Table 4.1674   GPS week: 1674   MJD: 55962.0-55968.0

CENT| CLK EPO  |        BRUS       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3031 |U    7     8    20 |U   13    14    42 |U   18    27    25 |
emr | emr 2929 |     9     8    21 |U   15    16    45 |    20    30    30 |
esa | esa 2934 |     7     6    19 |U   13    14    41 |    15    26    33 |
gfz | gfz 2934 |U    8     7    21 |U   12    14    42 |U   18    27    28 |
grg | grg 2957 |     8    10    28 |U   14    15    48 |    23    42    52 |
igr | igr 2952 |     6     6    19 |    12    14    39 |    15    25    25 |
igs | igs 2941 |     6     6    19 |    13    14    41 |    16    27    23 |
jpl | jpl 2915 |U    8     8    23 |U   15    16    39 |    19    27    28 |
mit | mit 2962 |U    6     6    19 |U   15    15    44 |U   21    29    26 |



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 5.1674.0   GPS week: 1674   Day: 0   MJD: 55962.0

CENT| CLK EPO  |        BRUS       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3058 |     7     9    21 |    14    12    42 |    45    40    48 |
emr | emr 2968 |    11     8    29 |    15    13    45 |    50    44    51 |
esa | esa 2976 |     8     5    24 |    15    13    42 |    37    41    46 |
gfz | gfz 2968 |     7     5    26 |    14    13    42 |    45    43    45 |
grg | grg 2976 |     9     9    37 |    16    14    50 |    47    47    47 |
igr | igr 2976 |     7     5    22 |    14    13    41 |    41    42    47 |
igs | igs 2974 |     8     5    24 |    14    13    46 |    46    43    44 |
jpl | jpl 2968 |    11     7    31 |    14    13    40 |    43    42    51 |
mit | mit 2976 |     8     5    22 |    16    13    48 |    52    48    35 |

Table 5.1674.1   GPS week: 1674   Day: 1   MJD: 55963.0

CENT| CLK EPO  |        BRUS       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3058 |     6     7    20 |    10    10    35 |     7     7    12 |
emr | emr 2968 |     9     8    20 |    14    16    38 |     8    12    19 |
esa | esa 2976 |     6     8    19 |    10    12    37 |     5     9    10 |
gfz | gfz 2967 |     6     9    22 |    10    12    34 |     5     8    10 |
grg | grg 2974 |     6    10    24 |    11    10    31 |     9     7    22 |
igr | igr 2976 |     5     8    19 |    10    11    35 |     5     9    10 |
igs | igs 2958 |     5     6    18 |    10    12    33 |     5     7    10 |
jpl | jpl 2968 |     7    10    19 |    11    14    36 |     5    13    16 |
mit | mit 2976 |     5    10    18 |    14    12    41 |     6     8    10 |

Table 5.1674.2   GPS week: 1674   Day: 2   MJD: 55964.0

CENT| CLK EPO  |        BRUS       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 2942 |     5     6    15 |    10    19    47 |    19    54    27 |
emr | emr 2872 |     8     7    19 |    13    22    44 |    15    56    26 |
esa | esa 2880 |     5     5    14 |     9    19    43 |    18    50    89 |
gfz | gfz 2869 |     6     6    17 |    11    19    46 |    20    54    34 |
grg | grg 2880 |     6     8    26 |    10    18    43 |    16    57    37 |
igr | igr 2933 |     5     6    16 |    10    17    41 |    17    55    34 |
igs | igs 2868 |     5     6    17 |    10    19    48 |    17    54    22 |
jpl | jpl 2870 |     8    14    28 |    14    22    45 |    26    55    39 |
mit | mit 2880 |     5     4    15 |    12    20    49 |    15    55    21 |

Table 5.1674.3   GPS week: 1674   Day: 3   MJD: 55965.0

CENT| CLK EPO  |        BRUS       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3047 |     7    11    21 |    17    16    51 |     9    10    14 |
emr | emr 2876 |     9     8    18 |    23    21    68 |    13    11    27 |
esa | esa 2976 |     6     6    19 |    17    17    46 |     8     7    16 |
gfz | gfz 2934 |    16     8    23 |    13    14    51 |     9     7    20 |
grg | grg 2965 |    10    11    25 |    21    23    88 |    11    11    23 |
igr | igr 2976 |     6     5    17 |    16    17    45 |     8     9    16 |
igs | igs 2975 |     6     5    16 |    17    16    46 |     8     8    14 |
jpl | jpl 2969 |     8     5    20 |    23    18    45 |    10     9    16 |
mit | mit 2976 |     6     5    18 |    20    18    53 |     8     9    16 |

Table 5.1674.4   GPS week: 1674   Day: 4   MJD: 55966.0

CENT| CLK EPO  |        BRUS       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3036 |     8     7    16 |    16    14    36 |    14    15    18 |
emr | emr 2969 |     9     9    18 |    22    17    43 |  ----  ----  ---- |
esa | esa 2976 |     7     8    15 |    16    13    35 |    11    18    22 |
gfz | gfz 2960 |     7     5    17 |    18    15    35 |    10    19    20 |
grg | grg 2971 |     7     7    19 |    17    14    37 |     9    19    21 |
igr | igr 2973 |     7     6    13 |    16    13    34 |     3     6    10 |
igs | igs 2973 |     6     6    16 |    17    14    36 |     9    16    18 |
jpl | jpl 2875 |     8     7    24 |    17    15    38 |    11    16    21 |
mit | mit 2976 |     7     6    18 |    17    14    41 |    11    16    21 |

Table 5.1674.5   GPS week: 1674   Day: 5   MJD: 55967.0

CENT| CLK EPO  |        BRUS       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3034 |     9    11    26 |    10    12    29 |    25    33    44 |
emr | emr 2876 |     9    10    22 |    10    15    29 |    18    24    37 |
esa | esa 2880 |     7     6    19 |    11    12    31 |    18    31    33 |
gfz | gfz 2967 |     6     8    24 |    10    13    32 |    25    34    52 |
grg | grg 2974 |     9    15    36 |    10    13    30 |    54   125   162 |
igr | igr 2955 |     6     8    23 |    10    13    31 |    19    34    41 |
igs | igs 2961 |     7     8    21 |    10    12    28 |    20    30    39 |
jpl | jpl 2875 |     8     6    19 |    11    14    25 |    21    27    35 |
mit | mit 2976 |     7     7    21 |    12    13    32 |    23    36    39 |

Table 5.1674.6   GPS week: 1674   Day: 6   MJD: 55968.0

CENT| CLK EPO  |        BRUS       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3044 |     6     8    25 |    13    17    50 |    10    28    13 |
emr | emr 2976 |     8     8    21 |    12    13    51 |    20    35    20 |
esa | esa 2880 |     7     5    20 |    12    14    55 |    10    27    17 |
gfz | gfz 2876 |     7     5    21 |    11    14    53 |    11    28    16 |
grg | grg 2960 |     8     7    27 |    11    15    57 |    17    32    51 |
igr | igr 2880 |     7     5    21 |    11    13    49 |     8    25    15 |
igs | igs 2880 |     7     5    20 |    11    14    53 |    11    28    15 |
jpl | jpl 2880 |     9     8    24 |    12    14    47 |    15    27    18 |
mit | mit 2976 |     6     5    21 |    12    13    47 |    31    35    43 |


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 6.1674   GPS week: 1674   MJD: 55962.500-55968.500

                                                         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     -31      62     316     -6 |       0     20
            |      27      15      50      99      4 |       1
emr   uuuuu |      40      -1     116     245     15 |       6     24
            |      14      24      89      91      7 |       4
esa   uuuuu |     -34     -19     -32    -206     -7 |      -4     22
            |      16      12      53     110      6 |       1
gfz   uuuuu |     -37      34     -66      49     -9 |       5     22
            |      15      31     140     135      3 |       2
grg   uuuux |      41     -28      37     105    -31 |      76     96
            |      10      14      47      73     60 |       6
igr   xxxxx |     -24       2      25     103     -2 |      -4     22
            |      14      10      60      50      4 |       1
irf   xxxxx |       3     -10     -34      71     -4 |       1     20
            |       8       6      30      20      9 |       2
jpl   uuuxu |      51     -25      97     368     13 |       5     28
            |      18      31      73      63      9 |       7
mit   uuuuu |      -1       3    -183     -76     -9 |       7     21
            |      13      10      66      53      4 |       3
ngs   uuuuu |     -55      30      72      91     -3 |       0     20
            |      26      35     115     148      9 |       2
sio   uuuuu |     127      22      78      86      8 |      -1     21
            |      24      12      56     142     14 |       3


Table 7.1674.0   GPS week: 1674   Day: 0   MJD: 55962.500

                                                         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 |     -41     -52      16     212      2 |       1     19
emr   uuuuu |      49     -15      32     203      3 |       2     21
esa   uuuuu |      -5     -39      82     -29      0 |      -5     22
gfz   uuuuu |     -40       9      54     165     -4 |       6     21
grg   uuuux |      34     -37     116      19    -81 |      83     96
igr   xxxxx |      -6      19      78      96      2 |      -6     21
irf   xxxxx |       6     -12     -39      73      4 |      -1     18
jpl   uuuxu |      30      13     -11     290     27 |      -6     26
mit   uuuuu |      10       8    -306     -21    -11 |      10     21
ngs   uuuuu |     -76      62      23    -164      5 |      -2     18
sio   uuuuu |     132      27       1     -28    -12 |       3     21

Table 7.1674.1   GPS week: 1674   Day: 1   MJD: 55963.500

                                                         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 |      42     -21     134     270     -6 |       0     19
emr   uuuuu |      19     -30     146      86      7 |       2     21
esa   uuuuu |     -20     -22     -30     -83    -10 |      -4     21
gfz   uuuuu |     -18      -2     106     159     -7 |       6     21
grg   uuuux |      27     -13      18      34    -65 |      81     96
igr   xxxxx |      -9      -1      97      71      4 |      -6     21
irf   xxxxx |       1     -13      31      39      8 |      -1     18
jpl   uuuxu |      77     -13     144     365     22 |      -2     26
mit   uuuuu |       3      -1    -105    -166    -12 |       9     21
ngs   uuuuu |     -78      55    -155     187      9 |      -2     18
sio   uuuuu |     105      30     135    -148     -5 |       0     21

Table 7.1674.2   GPS week: 1674   Day: 2   MJD: 55964.500

                                                         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     -11      26     317     -8 |       2     20
emr   uuuuu |      59      28       9     246     14 |       5     24
esa   uuuuu |     -39     -26     -48    -289     -2 |      -2     22
gfz   uuuuu |     -39       1      78      72    -11 |       8     22
grg   uuuux |      39      -9      31     201   -100 |      81     96
igr   xxxxx |     -34       0      16      85     -4 |      -3     23
irf   xxxxx |      -5      -8     -43      95      2 |       3     21
jpl   uuuxu |      70     -15      95     300     14 |       5     30
mit   uuuuu |     -17       1    -208     -28    -12 |      10     22
ngs   uuuuu |     -60      23      99      79      4 |       1     21
sio   uuuuu |     110      26      40      27      1 |       0     21

Table 7.1674.3   GPS week: 1674   Day: 3   MJD: 55965.500

                                                         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     -47     114     274     -3 |       0     21
emr   uuuuu |      44       9     139     253     20 |       4     24
esa   uuuuu |     -46     -10     -73    -281     -5 |      -4     23
gfz   uuuuu |     -64      42    -153    -149     -9 |       5     23
grg   uuuux |      57     -40      41     199    -59 |      75     97
igr   xxxxx |     -20       5     -77     146     -3 |      -4     24
irf   xxxxx |      -5     -12     -54      62     -9 |       2     22
jpl   uuuxu |      52     -56       5     361      5 |       5     30
mit   uuuuu |     -16      -5    -167     -71    -11 |       7     22
ngs   uuuuu |     -17      47     219     278     -8 |       1     21
sio   uuuuu |     107      30     126     123     10 |      -4     21

Table 7.1674.4   GPS week: 1674   Day: 4   MJD: 55966.500

                                                         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     -18      91     339    -11 |      -1     21
emr   uuuuu |      32      14     278     391     21 |       7     25
esa   uuuuu |     -48     -13     -37    -190     -8 |      -4     23
gfz   uuuuu |     -41      72    -234     -75    -15 |       5     23
grg   uuuux |      50     -17      75     116      4 |      72     95
igr   xxxxx |     -39      -3      59     151     -6 |      -3     24
irf   xxxxx |       0       1     -55      64     -6 |       2     22
jpl   uuuxu |      39       9     124     380      6 |       9     29
mit   uuuuu |      -7      24    -207    -122    -10 |       5     22
ngs   uuuuu |     -22     -42     101     109     -4 |       1     21
sio   uuuuu |     121      32      19     187     15 |      -3     21

Table 7.1674.5   GPS week: 1674   Day: 5   MJD: 55967.500

                                                         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      17     279     -9 |      -2     21
emr   uuuuu |      50      19     131     264     19 |       9     28
esa   uuuuu |     -45      -3     -75    -310    -17 |      -6     23
gfz   uuuuu |     -35      46    -159     -25     -9 |       2     22
grg   uuuux |      43     -31       5      70     36 |      69     93
igr   xxxxx |     -38     -14     -15      18     -6 |      -5     23
irf   xxxxx |      15     -10     -35      66    -11 |       2     21
jpl   uuuxu |      33     -58     141     401      7 |       9     30
mit   uuuuu |      15      -6    -162     -79     -4 |       3     20
ngs   uuuuu |     -75      24     120     178    -10 |       1     21
sio   uuuuu |     170      13     119     242     23 |      -3     22

Table 7.1674.6   GPS week: 1674   Day: 6   MJD: 55968.500

                                                         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 |      25     -33      35     520     -4 |      -1     19
emr   uuuuu |      29     -30      75     271     20 |      14     28
esa   uuuuu |     -36     -22     -46    -262     -5 |      -4     20
gfz   uuuuu |     -23      69    -154     199    -11 |       4     21
grg   uuuux |      40     -45     -28      97     51 |      73     96
igr   xxxxx |     -21      11      16     151     -1 |      -2     21
irf   xxxxx |      12     -18     -44      97    -19 |       3     20
jpl   uuuxu |      57     -54     178     478      7 |      15     27
mit   uuuuu |       5       2    -129     -46     -1 |       5     20
ngs   uuuuu |     -57      41      98     -31    -17 |       2     20
sio   uuuuu |     146       0     108     200     22 |       2     22



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