[IGSREPORT-20673] Wk 1678 IGS Final Orbits

IGS ACC igs.acc at noaa.gov
Thu Mar 22 06:15:24 PDT 2012


Author:  AC Coordinator / NOAA NGS

sum-file Version 2.0
Final IGS Orbit Combination - Week 1678   (Mar 04, 2012 - Mar 10, 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:

igs1678[0-6].sp3  IGS GPS ephemeris files in SP3 format.
igs1678[0-6].clk  IGS GPS satellite and station clocks in clock RINEX format.
igs1678[0-6].cls  IGS GPS clock combination summary report.
igs16787.erp      Earth Rotation Parameters (ERP) and their rates as well as
                  Universal Time (UT1-UTC) and Length Of Day (LOD) associated 
                  with IGS ephemerides.
igs16787.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   | 9 KOUC KOUC SOFI
                0  |  EMR   | 27 27
                0  |  ESA   | 9 UNSA
                0  |  GFZ   | 5 9 11 20 BRFT
                0  |  GRG   | LPGS USN3
                0  |  JPL   | 27
                0  |  MIT   | 8 27 8 27 DAV1 PARC
                1  |  COD   | NKLG
                1  |  EMR   | 4 27 4 27
                1  |  ESA   | TIXI TIXI
                1  |  GFZ   | 11 27 DAEJ KERG
                1  |  GRG   | USN3
                1  |  JPL   | 4
                1  |  MIT   | 4 9 19 27 4 9 19 27 CAS1 IENG MAW1 CAS1
                2  |  COD   | KOUC KOUC WES2
                2  |  EMR   | 4 4
                2  |  ESA   | NNOR UNSA
                2  |  GFZ   | 27 BRFT GRAZ
                2  |  GRG   | USN3
                2  |  JPL   | 8 YELL
                2  |  MIT   | 4 9 22 4 22
                3  |  COD   | 21 CHUR KOUC
                3  |  EMR   | 4 8 4 8 WHIT WHIT YELL
                3  |  ESA   | HYDE HYDE MAS1 NNOR UNSA
                3  |  GFZ   | 1 2 BRFT HRAO REUN YAKT
                3  |  GRG   | USN3
                3  |  JPL   | 4 8
                3  |  MIT   | 4 4 MAW1 MAW1 NYAL
                4  |  COD   | 9 NTUS NTUS WILL
                4  |  EMR   | 8 4 8
                4  |  ESA   | 9 27 MAS1 NNOR UNSA WHIT
                4  |  GFZ   | 2 9 22 ASPA BRFT COCO HRAO KERG OHI2 PDEL RIO2 STHL
                4  |  GRG   | USN3
                4  |  JPL   | 4 8 22
                4  |  MIT   | 4 22 MAW1 MAW1
                5  |  COD   | 6 18 6 18 NKLG
                5  |  EMR   | 8 4 8 CHUR PRDS PRDS SCH2 YELL
                5  |  ESA   | 4 NNOR UNSA
                5  |  GFZ   | 1 2 4 21 BRFT HRAO ISPA
                5  |  GRG   | USN3
                5  |  JPL   | 4
                5  |  MIT   | 4 19 4 19 CAS1 CHUR MAW1 TIXI CAS1 CHUR TIXI
                6  |  EMR   | 4 9 27 4 27
                6  |  ESA   | CHUR SCOR
                6  |  GFZ   | 1 2 9 21 BRFT CHUR DGAR HRAO PDEL PETS TSKB UNSA
                6  |  GRG   | ADIS USN3
                6  |  JPL   | 4 8 27
                6  |  MIT   | 4 9 27 4 27 CAS1 MAW1 CAS1

    
 5. New clock offsets and drifts were estimated for centres showing reference
    clock resets.  Note that only the largest clock offset and drift are output
    to the summary file.  However, the clock combination and the listed RMS
    include all the clock segments.  In summary, the following clock
    shifts/resets were noticed and accounted for:
    
               Day | Centre |  Time  |  Jump
               ----+--------+--------+-------------
                4  |  COD   | ~21:48 | ~ 0.12 ns

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

 7. 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 G04 |    |    |    |    |    |    |  1 |

 8. 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.
    

 9. Small rotations were applied to all the AC orbit and ERP values in order
    to align them to the current IGS reference frame. These rotations were
    estimated in the IGS SINEX combination process, performed by the IGS Reference
    Frame Coordinator at the Institut Geographique National (IGN). The estimated 7
    transformations, from which only the 3 rotations are applied to the orbit and
    ERP values, are:
    
            |    DX     DY     DZ      RX     RY     RZ     SCL
     Centre |   [mm]   [mm]   [mm]   [uas]  [uas]  [uas]   [ppb]
     -------+---------------------------------------------------
       COD  |    -.6    -.1   -1.7     -58      7     -2     .16
       EMR  |    6.8    2.7   14.9     -13      5      9     .41
       ESA  |    6.6    -.3  -14.4      47   -194    117     .21
       GFZ  |   -1.3     .7   -1.5     -56     34    -21     .22
       GRG  |    2.6   -1.3    2.3     -37     43    -23     .25
       JPL  |     .9    4.4   16.5     -49      7    -15     .70
       MIT  |    4.2   -1.5     .0     -41     26    -60     .22
       NGS  |    4.8   -2.2    2.6     -22    -22     25     .35
       SIO  |    5.1     .9   -4.9      -7   -161     56     .41


10. 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.

11. 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.

12. 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 1.1678.a). It also displays the computed satellite
position sigmas for the combined orbits (table 1.1678.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 2.1678.[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 3.1678.[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 5.1678.0-6).

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 1678 summary.                       (Mar 04, 2012 - Mar 10, 2012)

Table 1.1678.a   GPS week: 1678   MJD: 55990.000-55996.000

         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  256|    0     0     2    44   -51     1  -.39   10   10 |    -794     213     21     80
        |    1     0     1     6    11    21   .02           |     788    1127
emr   92|    1     1     7   -15   -66   -35   .37   21   21 |    5146    -287     19    111
        |    1     1     2    30    36    17   .05           |     705    1119
esa  133|    0     1     0   -89   182    41   .10    9    9 |      83    -394     18    147
        |    0     0     0    27    28    17   .02           |    1870    1856
gfz  195|    0    -2    -1    68  -135   -18   .46   14   13 |     205      73     36    112
        |    1     1     1    41    73     8   .03           |     574     920
grg  124|    0     0     1     5  -112    -4   .55   15   14 |    -109     243     56    202
        |    0     0     1     8    11    17   .09           |     367     649
igr  n/a|    0     0    -1   -48   -41   -19  -.11    6    5 |   12951     544     21     79
        |    0     0     1    12    27     8   .02           |    1389     929
jpl  162|    0     0     5    25   -39    26   .44   17   17 |    3252    -262     22     90
        |    2     1     0    14    14    36   .04           |     649     970
mit  320|    0     0    -5    34   -92   -19  -.46   12   11 |    -311     417     23    141
        |    0     0     0    30    36     9   .03           |     375     519
ngs  223|    0    -1    -1    -9    12   -32  -.30   13    9 |    -809     204   2096   3675
        |    1     0     0    39    32    18   .05           |     653     871
sio  242|    0     0     0   -26   286    51  -.11   20   19 |     ---     ---    ---    ---
        |    2     2     1    29    39    21   .05           |     ---     ---


Table 1.1678.b   GPS week : 1678   MJD: 55990.000-55996.000   

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



Table 2: Daily transformation of each centre to the combined IGS orbit and
         clocks for each day of the week. The transformation displayed is the
         sum of a priori and estimated transformations.
         WRMS - RMS weighted by the centres SP3 header accuracy codes.
         STA  - Number of stations in the daily solutions.
   
Table 2.1678.0   GPS week: 1678   Day: 0   MJD: 55990.000                            

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  256|   -1     0     3    48   -41    -3  -.41   10    9 |    -545    -176     19     83
        |                     14    15                       |
emr   92|    1     1     3   -29   -99   -59   .31   21   21 |    5152    1525     14    102
        |                    -25    41                       |
esa  133|    2     1     0  -126   218    57   .08    9    9 |   -2865    2858     13    152
        |                     26    37                       |
gfz  195|    0    -3     0    64   -25   -20   .48   13   12 |    -406    1023     30     95
        |                    -45    13                       |
grg  124|    0    -1     0    -6  -103    -9   .45   13   12 |    -501     641     51    188
        |                     -1    -1                       |
igr  n/a|    1     0     0   -53   -54   -11  -.12    6    5 |   10407    2025     20     62
        |                    -44    53                       |
jpl  162|    3     0     4    24   -54    33   .42   17   17 |    3088    1244     22     93
        |                    -11     3                       |
mit  320|   -1     0    -7    59   -17    -7  -.46   12   10 |    -746    1038     20    157
        |                      5   -14                       |
ngs  223|   -1    -2     0    -3   -27   -35  -.36   13    8 |    -549    -244   1701   3387
        |                      0   151                       |
sio  242|   -3    -4     1    12   368    89  -.06   23   22 |     ---     ---    ---    ---
        |                    -47  -159                       |

Table 2.1678.1   GPS week: 1678   Day: 1   MJD: 55991.000                            

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  256|   -1     0     3    51   -41   -31  -.37   11   10 |   -1108     740     18     75
        |                     13   -32                       |
emr   92|    0     0     9    14  -114   -35   .30   21   21 |    5954     315     22    120
        |                    -47    75                       |
esa  133|    1     1     0   -89   219    47   .12    8    8 |    -368     645     13    119
        |                      8    34                       |
gfz  195|    2    -1     0    17  -207   -14   .48   13   12 |     337     403     33    107
        |                     -3    -1                       |
grg  124|    0     0     2     6  -112    -5   .47   16   15 |    -516     911     54    196
        |                    -13   -67                       |
igr  n/a|    0     0    -3   -37   -26   -12  -.10    5    5 |   11885    1238     19     72
        |                    -30    26                       |
jpl  162|    0    -2     3    32   -47    29   .47   17   17 |    3694     347     22     82
        |                     23   -52                       |
mit  320|    0    -1    -5    19  -116   -12  -.46   10    9 |    -790    1158     24    145
        |                     12    11                       |
ngs  223|    0     0    -2    38    30   -23  -.29   14    9 |   -1175     834   2177   3713
        |                    -77    39                       |
sio  242|   -1    -1     0   -30   247    69  -.04   20   17 |     ---     ---    ---    ---
        |                    -40  -133                       |

Table 2.1678.2   GPS week: 1678   Day: 2   MJD: 55992.000                            

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  256|   -1     0     3    35   -41    -2  -.42   11   11 |    -766     734     24     80
        |                     54   -10                       |
emr   92|    2     3    10    18   -72   -41   .37   22   22 |    6231   -1860     20    114
        |                    -64    25                       |
esa  133|    0     1     0  -102   189    12   .11    9    9 |    3213   -2810     22    165
        |                      8    27                       |
gfz  195|    0    -3    -2    34  -236   -30   .42   13   13 |    1266   -1690     36    109
        |                    -32    16                       |
grg  124|    0     0     1    11  -114   -26   .54   14   14 |     545   -1048     53    198
        |                    -19   -63                       |
igr  n/a|    0     0     0   -37    -4   -26  -.07    6    5 |   13253    -789     23     81
        |                    -30    35                       |
jpl  162|   -1     0     6     3   -30    75   .48   17   17 |    4230   -1454     21     85
        |                      6   -13                       |
mit  320|    0    -1    -5    32  -104   -16  -.44   10    9 |     174    -280     26    123
        |                     12    18                       |
ngs  223|    0     0    -2    37    75    -6  -.28   12    8 |    -685     430   2406   3496
        |                    -87    37                       |
sio  242|    0    -1     0   -34   283    43  -.12   18   18 |     ---     ---    ---    ---
        |                    -24  -156                       |

Table 2.1678.3   GPS week: 1678   Day: 3   MJD: 55993.000                            

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  256|    0     0     1    43   -69     5  -.40   10   10 |    -504    -291     22     67
        |                    -25    30                       |
emr   92|    2     1     7   -14   -27    -3   .37   20   20 |    4762     131     21    112
        |                    -46   -41                       |
esa  133|    0     2     0  -106   168    34   .12   10   10 |     853   -1733     24    164
        |                      9    22                       |
gfz  195|    0    -4    -4    90   -94    -2   .49   15   14 |    -316     332     39    106
        |                    -63    22                       |
grg  124|    0    -1     3    20  -118     9   .52   16   15 |     -30      -4     57    227
        |                    -39   -28                       |
igr  n/a|    1     0    -1   -32   -64   -19  -.11    6    6 |   12987     966     22     79
        |                     -9     8                       |
jpl  162|    0     1     5    34   -55   -35   .44   16   16 |    3160     314     24     92
        |                     14   -13                       |
mit  320|    0     0    -5     2   -92   -16  -.49   11   10 |    -494     392     25    123
        |                     19    16                       |
ngs  223|   -1     0     0     6    10   -19  -.24   13    9 |    -184    -714   1661   3282
        |                    -32    -7                       |
sio  242|    2     0     0   -68   287    55  -.18   21   20 |     ---     ---    ---    ---
        |                    -29  -147                       |

Table 2.1678.4   GPS week: 1678   Day: 4   MJD: 55994.000                            

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  256|    1     0     1    41   -60    10  -.35   10    9 |     627   -1939     21     87
        |                     17   -14                       |
emr   92|    0     3     9   -72   -19   -47   .46   23   23 |    5021     -23     13    111
        |                     -2   -61                       |
esa  133|    0     1     0   -93   162    30   .08    9    9 |    -876      40     11    112
        |                     22    47                       |
gfz  195|   -1    -4    -1   145  -153   -26   .46   17   16 |    -159     853     36    123
        |                    -63    31                       |
grg  124|   -1     0     0     6  -126   -20   .61   15   15 |    -112     568     49    207
        |                     17   -29                       |
igr  n/a|    0     0     0   -54   -75   -31  -.10    6    6 |   14121      13     21     77
        |                    -15    50                       |
jpl  162|    0    -2     5    16   -37    53   .49   17   18 |    3542    -266     20     99
        |                     29   -33                       |
mit  320|    0     0    -6    65  -122   -28  -.40   12   11 |      34      57     22    161
        |                      5     0                       |
ngs  223|   -1     0    -1   -63     0   -35  -.28   12    8 |      53   -1015   2006   3894
        |                    -24    98                       |
sio  242|    1     1     0     8   263    42  -.10   19   19 |     ---     ---    ---    ---
        |                    -52  -158                       |

Table 2.1678.5   GPS week: 1678   Day: 5   MJD: 55995.000                            

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  256|   -1     0     0    52   -58    -7  -.39   10   10 |   -1804    1355     24     96
        |                    -22     7                       |
emr   92|    2     0     8   -16   -46   -36   .37   21   21 |    4591   -1035     25    105
        |                    -38   -17                       |
esa  133|    0     1     0   -42   148    66   .13   10   10 |     896   -1490     27    163
        |                    -30    44                       |
gfz  195|   -1    -2     0    57   -84   -16   .43   16   15 |     284      58     42    120
        |                    -75    20                       |
grg  124|    1     0     0     2   -93    -4   .60   15   14 |      86     117     73    213
        |                      4   -22                       |
igr  n/a|    0    -1     0   -62   -50   -11  -.13    5    5 |   13620     112     24    105
        |                      2    30                       |
jpl  162|    3     0     4    48   -34    28   .43   17   17 |    2843   -1276     22     87
        |                     28     2                       |
mit  320|    0    -1    -4    -7   -78   -24  -.49   12   11 |    -221     162     27    124
        |                     25     4                       |
ngs  223|   -1    -1    -1   -35     3   -37  -.27   13   10 |   -1759    1267   2397   3961
        |                     77    39                       |
sio  242|    1     2    -1   -51   291    39  -.14   21   18 |     ---     ---    ---    ---
        |                    -32  -141                       |

Table 2.1678.6   GPS week: 1678   Day: 6   MJD: 55996.000                            

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  256|    0     0     1    40   -48    38  -.41   10    9 |   -1460    1072     22     77
        |                     47   -33                       |
emr   92|    2     0     6    -5   -86   -27   .36   21   21 |    4317   -1062     23    114
        |                    -42    36                       |
esa  133|    0     0     0   -67   169    40   .08    9    9 |    -270    -269     21    154
        |                     -5    27                       |
gfz  195|    1    -1     0    73  -143   -17   .42   13   13 |     433    -468     40    124
        |                    -29    16                       |
grg  124|    0     0     0    -2  -122    24   .69   16   15 |    -240     517     55    190
        |                     14   -36                       |
igr  n/a|    1    -1     0   -62   -11   -23  -.13    6    6 |   14389     244     24     83
        |                      4    -1                       |
jpl  162|    2    -3     4    18   -13    -3   .37   18   18 |    2207    -746     25     95
        |                     55   -65                       |
mit  320|   -1     0    -5    65  -115   -33  -.48   15   14 |    -135     394     23    159
        |                      6     8                       |
ngs  223|    0    -2     0   -45    -6   -66  -.38   14    9 |   -1364     876   2327   3998
        |                     68    53                       |
sio  242|   -2     3    -2   -21   265    23  -.14   20   18 |     ---     ---    ---    ---
        |                    -43  -144                       |

       
       
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 3.1678.0   GPS week: 1678   Day: 0   MJD: 55990.000                            

        Weighted Average                                            Orbit Dynamics (7 days)
 PRN  |  cod  emr  esa  gfz  grg  igr  jpl  mit  ngs  sio  IGS |   cod  emr  esa  gfz  grg  igr  jpl  mit  ngs  sio   IGS
------+--------------------------------------------------------+---------------------------------------------------------
   1E |   22   19   14   15   14    6   16   14    7   11    6 |    34   29   24   22   28   25   32   26   24   26    24
   2E |    7   21    7   13   16    6   13   12   14   20    4 |    38   43   44   51   44   42   45   43   37   41    42
   3  |    9   14    8    9   10    4   12    8    9   17    3 |    15   27   18   23   19   17   24   15   16   18    16
   4E |   11   26   10   13   15    9   20   12   17   20    5 |    93  102  101  101  105   99  104   94   95  103    98
   5  |    7   18    7   16    9    5   21   13   12   21    4 |    36   38   36   45   42   41   40   42   40   40    38
   6  |    9   16    8    8    9    5   12    9    6   17    3 |    19   29   19   23   21   20   26   16   19   20    18
   7E |    7   20   10   10    9    5   21    9   12   23    4 |    38   45   40   43   43   39   45   39   39   37    39
   8E |   17   26   12   13   16    8   17   18   25   23    6 |    33   46   36   41   46   36   44   36   41   28    36
   9E |   18   19   10   12   15    6   20   13   33   10    7 |    20   32   17   22   28   18   33   24   38   24    21
  10  |   10   12    8   10    7    6   13    9    9   16    3 |    41   43   54   57   50   48   45   50   45   41    48
  11E |    9   16    9   12   12    5   14   20    6   25    4 |    49   43   50   48   43   50   46   58   55   58    49
  12  |   10   23    9    9   14    6   18    7   11   27    4 |    26   38   30   36   40   31   37   30   34   31    31
  13  |    7   20    9   12   18    5   13   13   14   17    5 |    30   43   37   37   46   34   45   35   29   31    34
  14  |    9   25    8   12   10    4   15   13   10   38    4 |    35   47   38   45   45   38   43   41   38   41    39
  15  |    9   22    9   12   16    5   17   12    8   33    4 |    33   42   36   39   42   35   40   35   31   38    35
  16  |    7   24    8   12   10    4   20    5   10   32    4 |    30   39   35   40   38   31   36   31   28   27    32
  17  |    7   24   10   20   14    6   17   12   11   22    5 |    43   49   39   36   44   39   51   41   35   41    40
  18  |   10   18    8   20   11    6   21   13   14   24    5 |    31   35   41   58   42   40   38   46   40   37    39
  19  |    6   27   10   10   15    5   22   14   11   26    5 |    37   52   37   35   40   39   51   41   40   41    39
  20  |   10   21   13   27   12    6   17    9   11   23    5 |    33   37   38   45   39   34   36   42   39   36    37
  21  |    8   22    7   12   11    8   15   11    9   18    4 |    40   46   45   52   51   44   44   42   42   49    44
  22  |    8   20   12    9   10    5   20   19    8   25    5 |    39   43   49   53   50   48   42   55   45   52    46
  23  |    8   27    8   13   13    5   17    8    9   26    4 |    30   44   35   38   40   33   41   34   32   29    33
 X24  |    7  ---  ---  ---  ---   18  ---  ---  ---  ---    0 |    42  ---  ---  ---  ---   40  ---  ---  ---  ---    42
  25  |    8   14    7   11   15    3   16    8   12   20    4 |    38   42   38   40   50   39   45   38   40   35    39
  26  |    8   14    9   11   10    6   13   10   11   26    4 |    25   30   26   31   31   26   31   29   27   28    26
  27E |   13   18    9    7   19    4   17   14   25  ---    6 |    21   31   22   24   39   22   34   23   34  ---    24
  28  |    9   21   10   12   13    8   17   15   13   27    5 |    33   44   41   42   47   38   45   39   35   34    38
  29  |    8   24    8   15   15    5   19   12    8   22    5 |    46   58   45   43   46   48   56   47   46   54    46
  30  |    8   12    8   13   11    5   11    9   12   19    3 |    25   32   29   34   32   26   32   26   27   29    27
  31E |    7   23    7   11   14    4   21    7   11   27    4 |    32   37   34   40   39   33   41   35   34   40    35
  32  |    9   19   11   11   12    6   14    7    7   17    4 |    32   37   39   43   42   37   39   42   40   32    37
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |   10   21    9   13   13    6   17   12   13   23      |T   34   42   37   41   42   37   42   38   37   38    37
 WRMS |    9   21    9   12   12    5   17   10    8   22      |NE  32   40   36   40   40   35   40   36   34   35    35
 MEDI |    8   20    9   12   13    5   17   12   11   22      |MD  33   42   37   40   42   37   41   39   38   36    37

Table 3.1678.1   GPS week: 1678   Day: 1   MJD: 55991.000                            

        Weighted Average                                            Orbit Dynamics (7 days)
 PRN  |  cod  emr  esa  gfz  grg  igr  jpl  mit  ngs  sio  IGS |   cod  emr  esa  gfz  grg  igr  jpl  mit  ngs  sio   IGS
------+--------------------------------------------------------+---------------------------------------------------------
   1E |   10   27    8   11   14    8   14   11   11    9    4 |    22   28   20   17   22   19   27   20   22   18    19
   2E |    8   21    5   13   16    5   15   10    8   17    4 |    27   33   31   39   34   28   35   30   29   33    30
   3  |   10   16    6   13   12    4   13    7    8   13    3 |    20   27   25   28   22   22   27   19   20   21    21
   4E |   15   21    7   11   18    6   16   12   15   19    5 |    91   96   97   95   98   91   96   93   88   99    94
   5  |    8   20    8   14   11    5   21   11   10   18    4 |    24   28   26   36   31   26   32   31   29   30    27
   6  |    9   15    6   15   10    3   14    7    8   14    3 |    25   28   27   30   25   24   29   20   23   25    24
   7E |    7   20    9   14   15    3   21    5   10   15    4 |    23   28   23   29   26   20   28   22   24   20    22
   8E |   16   25   13   11   25    7   19   15   27   16    6 |    35   42   34   36   44   32   42   36   40   42    36
   9E |   17   21   11   15   23    5   18   11   37    9    6 |    24   33   25   29   36   23   34   25   44   25    26
  10  |   10   14    5   11   13    5   11    9    7   14    3 |    38   36   40   45   44   39   39   42   41   36    40
  11E |   10   25    5    9   17    4   15   13   12   20    4 |    44   43   42   41   45   44   45   44   47   44    43
  12  |   16   21    9   12   16    5   16    8   11   26    5 |    15   32   24   29   28   21   28   20   26   23    22
  13  |    8   25    8   12   19    4   16    8   11   16    4 |    24   35   29   30   40   24   33   28   25   21    26
  14  |    9   23    8   13   15    2   15   13   12   29    5 |    24   35   29   39   38   27   33   30   28   26    28
  15  |   11   22   12   14   19    5   20   10   12   26    5 |    22   33   30   30   35   24   34   25   26   24    26
  16  |    6   23    7   12   13    4   18    7   10   30    4 |    23   28   21   26   27   19   27   18   22   19    21
  17  |    8   22    8   12   18    5   21    8    7   20    4 |    26   35   27   30   35   27   38   25   21   27    26
  18  |   13   18    9   17   13    7   16   13    9   22    4 |    16   26   27   38   27   22   27   28   22   23    23
  19  |    8   23    8   14   14    6   18    9   12   27    4 |    26   36   29   22   26   27   35   29   26   27    27
  20  |    7   24    9   14   13    7   17   14    9   20    4 |    26   28   22   29   25   24   28   26   25   25    24
  21E |    9   19    5   11   13    5   14    8   12   14    3 |    23   30   33   37   31   28   29   28   29   32    29
  22  |   11   20   10   12   12    6   16   13    9   23    4 |    21   26   29   35   30   27   31   32   28   32    27
  23  |    7   25    4   15   16    4   18   11   12   25    4 |    23   30   26   29   32   23   30   24   25   18    24
 X24  |    7  ---  ---  ---  ---   21  ---  ---  ---  ---    0 |    28  ---  ---  ---  ---   40  ---  ---  ---  ---    29
  25  |   11   14    4    9   16    4   14    7   10   19    3 |    28   30   32   30   39   27   36   25   25   22    28
  26  |   10   12    8   12   10    4   13    7    9   22    4 |    20   23   26   27   27   21   23   24   24   27    23
  27E |   15   17   10   12   30    5   17   16   29   19    6 |    19   27   21   23   41   19   32   24   36   31    23
  28  |   11   20   10    8   15    4   18   11   12   19    4 |    20   35   28   30   34   24   33   26   27   23    25
  29  |   12   23    6   14   15    7   15    9   11   20    4 |    30   39   32   30   28   33   36   29   32   35    29
  30  |    8   11    8   12   13    3   10    8    8   17    3 |    28   34   28   36   30   28   32   28   31   29    29
  31E |    8   23    7   12   15    5   19    8   11   23    4 |    23   29   25   29   31   24   29   23   24   28    24
  32  |   10   20    6   10   13    6   15    5   10   15    3 |    25   30   24   27   30   28   29   32   29   27    26
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |   11   21    8   13   16    5   17   10   14   20      |T   26   33   30   33   34   28   34   29   30   29    28
 WRMS |   10   21    8   12   15    5   17    9    9   17      |NE  24   31   27   31   31   26   31   26   26   25    26
 MEDI |   10   21    8   12   15    5   16    9   11   19      |MD  24   30   27   30   31   24   32   26   26   27    26

Table 3.1678.2   GPS week: 1678   Day: 2   MJD: 55992.000                            

        Weighted Average                                            Orbit Dynamics (7 days)
 PRN  |  cod  emr  esa  gfz  grg  igr  jpl  mit  ngs  sio  IGS |   cod  emr  esa  gfz  grg  igr  jpl  mit  ngs  sio   IGS
------+--------------------------------------------------------+---------------------------------------------------------
   1E |   11   22   10   13   11    5   16   10    9   11    4 |    24   26   28   23   24   22   30   25   23   24    23
   2E |    9   23    7   12   14    5   18    8    9   13    4 |    36   41   35   44   42   38   39   36   37   37    37
   3  |   12   16    7   15   15    4   11    6   11   10    4 |    16   24   19   29   21   17   24   15   20   17    17
   4E |   13   19   10   13   19    8   16   12   14   22    5 |    59   65   68   69   65   65   62   62   60   68    63
   5  |    9   17    8   14    9    4   21   10   10   18    4 |    34   36   39   43   38   37   38   39   42   37    37
   6  |   11   18    6   15   11    4   12    7    7   10    3 |    21   32   21   33   25   19   27   19   18   21    21
   7E |    9   18    8   14   22    5   19    8   10   14    4 |    33   36   34   37   31   34   39   36   33   32    32
   8E |   19   30   13   14   20    9   17   14   25   21    6 |    32   51   36   40   43   38   45   38   44   34    36
   9E |   15   22   11   12   19    6   17   10   33   16    6 |    22   32   22   26   31   24   32   24   42   29    24
  10  |   11   14    4   13   12    5   12    8    6   12    3 |    32   34   36   44   41   36   33   40   35   36    36
  11E |   12   20    8   12   14    4   12    8   12   10    4 |    36   38   37   36   31   36   34   43   40   41    37
  12  |   13   24   10   14   15    9   18    9    8   24    5 |    22   35   27   31   30   23   30   27   25   27    25
  13  |    8   23    7   12   18    5   15   11    7   13    4 |    28   40   32   30   39   30   39   30   32   27    30
  14  |   10   26    9   14   14    5   15   13   12   22    5 |    33   40   37   44   41   35   40   36   36   34    35
  15  |   12   20   10   10   15    6   19    9    7   21    4 |    29   39   34   35   38   31   38   32   30   32    32
  16  |   10   32    7   12   13    6   20    7    8   28    5 |    23   37   27   31   32   26   31   26   25   22    25
  17  |    8   21   12   13   14    5   16    8   12   20    4 |    36   41   32   32   39   33   40   35   33   33    33
  18  |   11   23   10   16   11    5   17   11    8   21    4 |    27   30   33   44   33   32   30   35   31   28    30
  19  |    6   25    9   11   14    6   15    9   12   19    4 |    32   43   33   33   34   33   39   35   37   35    33
  20  |   10   24   12   14   12    6   18   13    9   20    5 |    31   32   34   35   32   29   30   36   39   33    33
  21E |   10   24    8   13    9    4   15    7   13   12    4 |    29   33   36   41   39   33   32   32   36   37    33
  22  |   14   25   11   12    9    5   20   13    9   21    5 |    33   35   43   48   42   40   36   43   43   41    39
  23  |    9   25    6   13   11    6   18    9    9   23    4 |    29   40   32   32   34   32   38   33   34   28    31
 X24  |    7  ---  ---  ---  ---   27  ---  ---  ---  ---    0 |    29  ---  ---  ---  ---   29  ---  ---  ---  ---    28
  25  |    8   16    8    9   14    5   16    7    9   13    3 |    30   33   33   33   38   32   34   30   34   28    31
  26  |   15   14    7    9   11    5   15    8   14   22    4 |    26   29   25   27   27   25   29   26   31   28    25
 X27E |   14   19   10   10   26    6   15   12   23  ---    6 |    22   31   23   24   38   23   32   24   34  ---    24
  28  |   10   24    9   12   13    6   18   13   11   18    4 |    31   39   33   34   40   31   39   34   32   31    32
  29  |   11   25    8   13   10    5   18    8    8   20    4 |    37   45   36   34   37   36   43   38   37   43    36
  30  |    9   12    8   13   11    3   10    8    9   18    3 |    21   31   27   32   30   23   32   22   24   23    24
  31E |    9   25    9   12   17    6   21    7    8   17    4 |    28   35   33   33   31   28   35   30   31   31    29
  32  |   11   22    9   13   10    5   18   10   11   18    4 |    34   35   39   40   36   36   37   41   40   36    37
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |   11   22    9   13   14    6   17   10   12   18      |T   29   36   33   36   35   31   35   32   34   32    31
 WRMS |   11   22    9   13   13    5   17    9    8   18      |NE  28   35   32   35   34   30   34   32   32   30    30
 MEDI |   10   22    9   13   14    5   17    9    9   18      |MD  29   35   33   34   36   32   35   34   34   32    32

Table 3.1678.3   GPS week: 1678   Day: 3   MJD: 55993.000                            

        Weighted Average                                            Orbit Dynamics (7 days)
 PRN  |  cod  emr  esa  gfz  grg  igr  jpl  mit  ngs  sio  IGS |   cod  emr  esa  gfz  grg  igr  jpl  mit  ngs  sio   IGS
------+--------------------------------------------------------+---------------------------------------------------------
   1E |   12   22   13   17   18    5   14   11   11   20    5 |    20   27   20   22   30   22   28   20   20   26    18
   2E |    9   22    8   15   19    5   15    9   11   14    4 |    27   36   33   37   35   31   31   30   29   32    30
   3  |   10   18    6   22   13    6   10    8   10   13    4 |    18   31   24   31   29   19   26   19   18   18    19
   4E |   12   14    6   14   18    5   16   14   14   20    5 |    79   80   81   85   86   78   86   77   78   81    81
   5  |    8   17    9   17   12    5   17    6   13   22    4 |    35   38   35   48   42   39   38   42   42   39    37
   6  |   11   14    5   14   12    5   10    6    7   13    3 |    21   31   27   34   34   24   31   22   23   23    24
   7E |    7   22    9   16   21    6   19    9    7   23    5 |    27   35   29   33   28   27   34   27   31   26    27
   8E |   18   24   13   16   17    8   17   17   26   26    6 |    30   37   31   35   39   30   36   33   42   34    31
   9E |   13   23   13   15   21    5   21   13   36   17    7 |    17   31   26   30   33   24   33   27   46   28    24
  10  |    9   11    4   11   12    4   11    7    7   17    3 |    36   37   41   50   41   39   39   40   36   32    39
  11E |   11   16    8   17   20    6   13   14   13   23    5 |    34   37   31   38   36   35   33   35   34   43    32
  12  |   12   23    9   11   17    7   16   11   10   22    4 |    18   31   22   31   33   21   30   28   25   23    22
  13  |    7   19    9   16   16    7   18   19   10   14    5 |    27   36   31   32   37   29   40   31   28   23    29
  14  |    9   22   11   14   12    5   17   12   10   16    4 |    32   39   38   43   41   35   41   38   35   33    35
  15  |    8   23   11   13   16    6   18    9    9   22    4 |    28   38   34   38   38   31   37   34   31   33    31
  16  |   10   23    7   13   14    6   19    7    7   28    4 |    27   31   29   32   37   28   33   29   28   28    27
  17  |    8   23   12   18   16    5   15    9    8   17    4 |    30   41   31   33   38   30   39   29   25   31    29
  18  |   10   21   13   21   10    6   17   10   11   19    5 |    30   34   35   48   35   31   33   36   30   28    31
  19  |    9   26   11   16   15    5   16   13   12   21    5 |    26   44   29   31   36   29   38   31   32   32    28
  20  |    9   23    9   14   11    7   19    8   11   23    4 |    30   36   32   42   34   34   31   37   37   32    32
  21E |    9   23   10   13   20    6   12   10   10   16    4 |    26   31   31   36   40   29   33   29   28   37    29
  22  |   11   22   12   17   12    6   21   15   16   21    5 |    37   38   42   52   43   39   40   43   38   39    38
  23  |    9   25    8   14   12    8   22   13    9   30    5 |    31   39   32   33   34   32   37   30   32   24    30
 X24  |    8  ---  ---  ---  ---   30  ---  ---  ---  ---    0 |    24  ---  ---  ---  ---   36  ---  ---  ---  ---    25
  25  |   10   15   10   13   17    6   16   11    9   18    4 |    28   33   32   31   41   29   40   33   34   24    31
  26  |    9   17    6   13   10    7   16    9   12   26    4 |    25   32   33   38   36   31   34   32   33   35    31
 X27E |   12   19   12   13   23    4   18   12   26  ---    6 |    13   25   18   22   30   17   29   19   32  ---    17
  28  |    8   22   13   13   14    6   17   12   11   21    5 |    22   37   32   34   41   29   35   31   28   28    28
  29  |   15   22    8   11   18    9   14   14    7   21    5 |    37   42   32   34   35   37   43   38   36   41    34
  30  |    7   10    8   11   14    4   11    7    8   15    3 |    28   32   33   33   36   29   34   27   31   28    29
  31E |   10   20    9   13   17    5   17    9   16   20    5 |    28   30   34   34   34   31   34   32   33   37    30
  32  |   13   18   10   18   12    6   17    8    8   24    4 |    28   34   33   48   39   34   32   38   34   33    33
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |   10   20   10   15   16    6   16   11   13   21      |T   28   36   32   37   37   31   36   32   33   32    30
 WRMS |   10   20   10   14   15    6   16   10    9   20      |NE  28   35   32   37   37   31   35   32   31   29    30
 MEDI |    9   22    9   14   16    6   17   10   10   20      |MD  28   36   32   34   36   30   34   31   32   32    30

Table 3.1678.4   GPS week: 1678   Day: 4   MJD: 55994.000                            

        Weighted Average                                            Orbit Dynamics (7 days)
 PRN  |  cod  emr  esa  gfz  grg  igr  jpl  mit  ngs  sio  IGS |   cod  emr  esa  gfz  grg  igr  jpl  mit  ngs  sio   IGS
------+--------------------------------------------------------+---------------------------------------------------------
   1E |    7   26   12   17   17    5   13    9   10   20    4 |    23   29   22   28   30   24   28   24   31   34    22
   2E |    8   22    7   17   16    4   18   10   10   13    4 |    23   34   26   32   32   26   28   23   26   32    25
   3  |   12   16    6   18   13    6   11    8    8   12    4 |    18   28   24   31   29   26   28   23   24   22    21
   4E |   14   22   11   16   19    4   19   19   15   19    5 |    58   67   64   61   67   62   68   67   65   68    63
   5  |    7   22    6   17   11    6   21   10   10   17    4 |    24   31   26   31   30   27   28   28   27   24    23
   6  |   11   16    7   19   13    7   13   10    7   12    4 |    18   26   25   32   29   26   29   22   26   22    22
   7E |    7   21    8   15   18    6   16   11   13   15    4 |    16   28   19   22   26   18   22   19   22   16    16
   8E |   18   28   15   19   20    8   19   18   27   23    7 |    25   35   26   32   34   27   32   32   39   36    27
   9E |   13   23   12   14   18    4   20   10   34   13    6 |    24   34   30   36   34   28   37   30   50   31    29
  10  |    8   17    5   12   13    6   12    8    7   16    3 |    24   26   29   33   33   28   28   32   30   29    28
  11E |   10   23    7   17   13    6   12   18   12   19    5 |    31   32   30   28   33   29   29   39   39   39    31
  12  |   11   23    9   10   18    7   21   12   10   24    5 |    17   35   23   32   31   24   30   29   25   23    22
  13  |    6   21    8   17   13    8   17   16   10   13    4 |    24   37   30   28   40   26   35   33   24   24    27
  14  |   10   23    8   18   15    5   15   15    6   17    4 |    23   34   33   42   39   31   34   36   29   30    30
  15  |    9   23   13   19   16    7   21    8   11   24    5 |    25   35   29   36   33   27   31   29   30   31    26
  16  |    8   27    8   20   12    5   20    8   10   28    5 |    23   35   26   32   33   24   32   25   28   23    23
  17  |    9   27    9   20   16    6   19   15   10   20    5 |    26   39   26   32   38   26   37   27   26   26    26
  18  |   10   21    9   22   13    5   18   14    8   20    5 |    14   27   20   34   27   21   26   23   22   16    18
  19  |    8   26   10   18   16    5   18   10   11   18    4 |    24   36   20   25   26   22   30   23   27   27    21
  20  |    8   22    9   19   11    8   20   16    6   22    4 |    26   31   28   33   30   25   31   31   28   27    26
  21E |    8   29    8   18   18    7   18   13   10   12    5 |    25   39   26   34   43   29   32   22   25   31    26
  22  |    9   22    9   19   10    5   17   14    6   19    4 |    21   29   27   36   35   27   31   30   28   24    25
  23  |    7   26    6   17   10    7   16   10    6   25    4 |    24   35   29   28   34   25   29   28   26   26    26
 X24  |    7  ---  ---  ---  ---   32  ---  ---  ---  ---    0 |    26  ---  ---  ---  ---   31  ---  ---  ---  ---    26
  25  |    7   14    8   13   17    4   16   13    8   18    4 |    25   33   32   31   39   29   37   32   30   26    28
  26  |    8   24    9   15   18    4   22   16   14   26    5 |    38   45   41   44   45   40   41   44   48   43    39
 X27E |   12   19   12   14   21    5   18   12   27  ---    6 |    21   30   28   30   37   25   35   28   40  ---    26
  28  |   10   22    7   15   17    4   19   10    9   21    4 |    29   43   33   38   43   32   38   35   33   29    31
  29  |   11   22    9   13   15    6   15   12    7   19    4 |    23   33   25   29   30   23   30   28   27   28    23
  30  |    9   13    7   17   14    6   14    7   12   17    4 |    17   26   20   29   28   20   25   16   28   22    20
  31E |    8   22    9   14   21    5   18   10   10   17    4 |    16   27   24   23   31   20   27   22   25   23    20
  32  |   11   22    7   15   12    7   14    8    7   30    4 |    30   33   31   34   38   33   38   37   32   41    31
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |   10   23    9   17   15    6   17   12   12   19      |T   24   33   28   32   34   27   32   29   30   29    26
 WRMS |    9   23    9   16   15    6   18   11    8   19      |NE  23   33   27   32   33   26   31   29   28   26    25
 MEDI |    9   22    8   17   16    6   18   11   10   19      |MD  24   33   26   32   33   26   31   28   28   27    26

Table 3.1678.5   GPS week: 1678   Day: 5   MJD: 55995.000                            

        Weighted Average                                            Orbit Dynamics (7 days)
 PRN  |  cod  emr  esa  gfz  grg  igr  jpl  mit  ngs  sio  IGS |   cod  emr  esa  gfz  grg  igr  jpl  mit  ngs  sio   IGS
------+--------------------------------------------------------+---------------------------------------------------------
   1E |   10   25   10   13   15    5   16   12   11   15    4 |    26   29   27   25   29   24   33   30   27   29    25
   2E |    8   21   12   16   20    4   15   10   10   18    4 |    31   37   34   42   38   32   35   30   33   40    33
   3  |   10   19    8   18   11    4   13    9    8   10    4 |    17   32   24   27   27   21   25   17   22   18    20
   4E |   19   21   11   15   18    6   17   15   14   19    5 |    97   96   95   97   95   94   93   94   87   97    93
   5  |    9   20    6   14   12    4   19    6   12   19    4 |    25   29   22   34   34   27   29   28   30   28    26
   6  |   10   16    8   17    9    4   15   11    9    8    4 |    21   33   28   31   29   25   29   22   28   23    25
   7E |    9   20    6   15   20    4   18    9   12   19    4 |    26   32   27   28   32   25   32   29   32   30    27
   8E |   19   23   12   15   18    7   18   15   25   16    6 |    33   43   37   40   45   35   46   39   48   39    38
   9E |   13   19   15   15   18    9   19    9   34   17    6 |    23   34   24   31   33   29   35   28   45   32    27
  10  |    8   14    7   13   13    7   12   14    8   10    4 |    26   26   28   30   33   27   27   27   30   22    27
  11E |    9   21    9   19   17    5   13   15   10   15    5 |    31   34   30   33   33   30   32   39   31   35    30
  12  |   11   22   13   13   17    5   17   13   14   24    5 |    25   36   27   31   30   26   33   31   31   27    26
  13  |    7   20    9   15   15    7   16   18   10   15    4 |    28   37   28   29   40   27   37   34   27   23    28
  14  |   10   21    8   17   14    5   15   15    7   21    4 |    25   38   35   43   37   29   36   37   27   32    31
  15  |    7   24   11   14   14    4   22    8    9   32    5 |    28   34   28   33   34   26   33   30   28   34    27
  16  |    9   26   11   16   11    7   20   11    9   27    5 |    21   32   26   31   35   24   32   26   26   23    24
  17  |    8   24   12   19   13    5   19   15   12   18    5 |    29   42   31   33   37   30   43   35   29   31    31
  18  |   10   22    9   17   12    4   20   11    8   20    4 |    26   31   31   36   31   27   31   31   29   24    27
  19  |    8   27    8   18   14    4   17    7    8   19    4 |    24   39   24   26   29   24   33   26   26   30    24
  20  |    9   21    9   10   11    6   19   13   12   28    5 |    27   31   31   28   26   27   30   32   24   35    26
  21E |    9   29   11   17   13    4   15   11   13   13    5 |    20   39   26   30   34   21   28   22   28   28    24
  22  |   10   24    9   18   11    6   22   14    8   19    5 |    26   33   31   39   36   29   32   34   30   29    29
  23  |   10   23    6   14   14    5   17   12   10   36    5 |    30   37   30   32   35   28   35   30   29   30    29
 X24  |    7  ---  ---  ---  ---   42  ---  ---  ---  ---    0 |    25  ---  ---  ---  ---   33  ---  ---  ---  ---    26
  25  |    8   15   12   11   15    5   17   11   11   21    4 |    28   33   31   31   37   29   38   35   33   29    30
  26  |   11   15    7   10   15    4   16    7   11   25    4 |    32   32   31   35   40   31   35   35   36   38    33
  27E |   12   19   12   14   23    5   20    9   25   16    6 |    26   30   27   30   37   26   35   26   36   32    27
  28  |    8   20    8   17   17    3   18    8   10   23    4 |    22   34   24   31   37   24   34   27   26   27    25
  29  |   12   24   11   12    9    5   20   12   12   18    5 |    32   39   29   27   30   29   39   32   34   36    30
  30  |   11   13   10   13   13    6   10   11   13   11    4 |    25   32   30   33   34   27   32   24   30   26    27
  31E |    9   19   11   13   16    5   19   15   10   22    5 |    18   25   24   26   28   19   27   23   20   21    19
  32  |   12   25    7   29   14    7   19    6   15   29    6 |    34   37   36   49   39   35   40   39   30   45    35
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |   10   21   10   16   15    5   17   12   13   21      |T   28   36   30   34   35   29   35   32   32   32    29
 WRMS |   10   21   10   15   14    5   17   11   10   18      |NE  26   34   28   32   33   27   33   30   28   29    27
 MEDI |    9   21    9   15   14    5   17   11   11   19      |MD  26   34   28   31   34   27   33   30   30   30    27

Table 3.1678.6   GPS week: 1678   Day: 6   MJD: 55996.000                            

        Weighted Average                                            Orbit Dynamics (7 days)
 PRN  |  cod  emr  esa  gfz  grg  igr  jpl  mit  ngs  sio  IGS |   cod  emr  esa  gfz  grg  igr  jpl  mit  ngs  sio   IGS
------+--------------------------------------------------------+---------------------------------------------------------
   1E |    9   28   10   10   16    4   14   17   15   11    5 |    26   41   28   30   32   25   31   32   30   25    26
   2E |   12   18    9   14   20    6   20   12    9   12    4 |    39   50   49   54   45   42   45   43   46   48    44
   3  |    8   11    8   12   12    3   12   11   13   10    3 |    22   29   30   34   34   27   29   25   28   24    26
   4E |   17   20    8   13   19    9   16   16   14   20    5 |    92  102   99   99  102   97  101   95   95  105    98
   5  |    8   22    9   20   13    7   23    8   10   22    5 |    34   39   41   45   44   36   35   39   35   36    37
   6  |    7   13    7   12   12    4   12   14   13   13    4 |    26   33   33   35   36   29   34   30   29   27    29
   7E |    6   19    8   11   15    5   19   14   11   10    4 |    19   26   25   23   25   20   25   20   21   22    20
   8E |   14   25   12   10   29    7   21   21   30   16    7 |    35   43   39   39   48   36   41   42   44   42    37
   9E |   13   20   12    8   16    4   18    8   33   15    6 |    33   43   43   45   47   42   45   40   60   38    41
  10  |    7   14    8   14   16    5   14   14    8    9    4 |    30   30   37   41   39   32   29   37   34   29    34
  11E |    8   20    6   11   16    3   16   13   11   15    4 |    31   34   29   31   29   28   34   37   33   33    29
  12  |   10   26   12   10   18    6   20   13   10   24    5 |    18   37   31   33   35   26   33   29   29   25    26
  13  |    7   17    7   13   15    5   15   15   14   16    4 |    29   33   31   34   43   30   35   36   28   29    30
  14  |    9   23    7   15   17    6   16   20   12   23    5 |    30   39   36   51   47   36   38   41   39   37    36
  15  |    8   25   10   18   16    6   22   10    8   33    5 |    29   41   40   41   43   35   40   34   35   43    35
  16  |   10   29   10   14   11    6   21   12   11   30    5 |    26   34   27   32   35   26   32   27   20   29    25
  17  |    8   22   11   16   12    6   19   17    8   18    5 |    22   38   23   31   33   23   35   25   23   26    23
  18  |    9   20    8   20   14    7   22   17   12   21    5 |    26   32   30   44   37   29   30   32   28   26    27
  19  |    9   23    9   13   10    5   17    9    7   17    4 |    22   35   23   23   26   22   34   20   26   26    22
  20  |    7   22    9   18   14    7   18   20   11   34    5 |    31   35   36   35   37   32   34   40   35   43    33
  21E |    8   29    7   15   20    6   14   14    9    9    4 |    30   43   36   41   47   34   36   27   33   35    33
  22  |    6   23    8   13   12    5   20   20   12   25    5 |    35   37   42   49   48   39   40   44   40   37    38
  23  |   11   23    8   11   11    5   17   12   15   29    5 |    30   33   34   35   37   31   33   37   30   31    30
 X24  |    7  ---  ---  ---  ---   29  ---  ---  ---  ---    0 |    41  ---  ---  ---  ---   41  ---  ---  ---  ---    42
  25  |    8   17    9   10   14    5   15   14    9   20    4 |    29   33   37   33   42   32   37   34   29   26    32
  26  |   10   14    7   10   13    8   13    9    6   26    4 |    31   37   42   43   41   40   38   40   42   50    40
  27E |   11   17   10   11   19    5   19   14   21   14    5 |    38   46   48   43   54   45   48   42   46   33    43
  28  |    9   19    7   13   14    4   18   12   12   22    4 |    27   41   36   42   44   31   36   34   30   30    32
  29  |   10   29    9   15   11    6   19   14    9   18    5 |    34   47   29   31   33   34   40   27   34   34    31
  30  |    9   12    9   11   13    6   10   14   13   12    4 |    26   30   30   31   35   27   31   29   24   32    27
  31E |   11   23    8   12   18    7   18   22   14   11    5 |    21   33   26   30   30   24   31   32   26   28    25
  32  |   11   22    7    9   13    8   17   11    9   33    5 |    29   30   36   37   38   31   35   39   33   36    33
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |   10   21    9   13   16    6   18   15   14   20      |T   30   38   36   39   40   33   37   35   35   35    33
 WRMS |    9   21    9   13   15    6   18   14    9   18      |NE  28   35   33   37   38   31   34   33   31   32    31
 MEDI |    9   22    8   13   14    6   18   14   11   18      |MD  29   37   36   35   38   31   35   34   33   32    32



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 4.1678   GPS week: 1678   MJD: 55990.0-55996.0

CENT| CLK EPO  |        BRUX       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3040 |U   28    11    38 |U   13    13    39 |U   17    35   113 |
emr | emr 2960 |    30    13    41 |U   14    14    43 |    21    31    88 |
esa | esa 2976 |    28    10    41 |U   14    15    39 |    16    33   105 |
gfz | gfz 2959 |U   28    10    40 |U   15    15    51 |U   19    27    85 |
grg | grg 2975 |    29    12    49 |U   13    13    38 |    13    31    80 |
igr | igr 2975 |    28    10    41 |    14    15    38 |    17    33   110 |
igs | igs 2956 |    28    10    38 |    14    15    39 |    17    36   112 |
jpl | jpl 2960 |    30    11    47 |U   14    16    40 |    19    30    83 |
mit | mit 2976 |    30    10    42 |U   15    15    42 |U   21    24    78 |



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 5.1678.0   GPS week: 1678   Day: 0   MJD: 55990.0

CENT| CLK EPO  |        BRUX       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3038 |     6     5    14 |    16    17    35 |     5     5    14 |
emr | emr 2964 |     8     6    17 |    18    14    50 |    11    13    21 |
esa | esa 2976 |     7     4    16 |    24    26    39 |     7    13    16 |
gfz | gfz 2962 |     7     4    17 |    19    19    57 |     7    11    19 |
grg | grg 2975 |     8     5    20 |    16    15    35 |    13    18    21 |
igr | igr 2976 |     6     4    14 |    25    26    41 |     7     9    17 |
igs | igs 2961 |     7     4    15 |    24    27    41 |     7    11    14 |
jpl | jpl 2964 |     8     5    15 |    25    26    46 |     9    11    17 |
mit | mit 2976 |     9     4    19 |    25    29    61 |     8     8    18 |

Table 5.1678.1   GPS week: 1678   Day: 1   MJD: 55991.0

CENT| CLK EPO  |        BRUX       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3029 |   162    42   185 |     7     7    24 |     9    10   125 |
emr | emr 2960 |   161    42   186 |     8     8    27 |    14    17   126 |
esa | esa 2976 |   158    41   191 |     7     7    27 |     8    14   130 |
gfz | gfz 2960 |   162    43   185 |     7     7    35 |    12     9   132 |
grg | grg 2976 |   160    39   192 |     8     7    28 |     9    16   126 |
igr | igr 2976 |   161    42   185 |     8     6    24 |     9    14   123 |
igs | igs 2939 |   161    40   188 |     7     8    24 |    10    19   126 |
jpl | jpl 2959 |   163    37   194 |     8     8    23 |    12    16   125 |
mit | mit 2976 |   170    42   174 |     8     6    25 |    16    26   109 |

Table 5.1678.2   GPS week: 1678   Day: 2   MJD: 55992.0

CENT| CLK EPO  |        BRUX       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3039 |     6     5    14 |    13     9    40 |    52    77   312 |
emr | emr 2960 |     8     8    17 |    13    14    37 |    63    92   348 |
esa | esa 2976 |     5     5    17 |    14    10    39 |    47    52   259 |
gfz | gfz 2960 |     6     7    17 |    14     9    47 |    55    71   314 |
grg | grg 2976 |     7     7    22 |    14    10    42 |  ----  ----  ---- |
igr | igr 2973 |     5     5    16 |    14     9    39 |    53    63   301 |
igs | igs 2956 |     4     6    14 |    13    10    38 |    54    74   307 |
jpl | jpl 2959 |     8     5    15 |    13    13    37 |    53    80   311 |
mit | mit 2976 |     6     5    21 |    14    10    40 |    52    70   299 |

Table 5.1678.3   GPS week: 1678   Day: 3   MJD: 55993.0

CENT| CLK EPO  |        BRUX       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3040 |     5     7    15 |    15    15    63 |     7     6    16 |
emr | emr 2960 |     9     9    18 |    16    16    58 |    10    12    21 |
esa | esa 2976 |     6     7    17 |    15    16    56 |     8     8    19 |
gfz | gfz 2960 |     5     7    16 |    17    17    60 |    11     9    23 |
grg | grg 2976 |     7    10    30 |    16    17    59 |     9     7    17 |
igr | igr 2976 |     6     6    17 |    15    18    59 |     8     6    19 |
igs | igs 2970 |     5     6    16 |    15    16    60 |     7     6    18 |
jpl | jpl 2960 |     7     8    15 |    15    15    55 |     9    10    16 |
mit | mit 2976 |     6     6    20 |    15    16    58 |     9     9    22 |

Table 5.1678.4   GPS week: 1678   Day: 4   MJD: 55994.0

CENT| CLK EPO  |        BRUX       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3047 |     5     5    14 |    21    20    49 |     8     7    16 |
emr | emr 2960 |     6     8    13 |    20    22    55 |    10     9    21 |
esa | esa 2976 |     6     5    21 |    19    21    50 |     8     9    18 |
gfz | gfz 2958 |     6     5    18 |    18    21    50 |    17    15    27 |
grg | grg 2976 |     8     5    31 |    17    19    46 |    10     9    21 |
igr | igr 2975 |     7     4    26 |    18    22    48 |    10     7    20 |
igs | igs 2948 |     5     5    12 |    19    21    49 |     7     6    18 |
jpl | jpl 2960 |     6     5    16 |    21    21    51 |    11    11    23 |
mit | mit 2976 |     7     6    29 |    17    20    48 |    10     7    21 |

Table 5.1678.5   GPS week: 1678   Day: 5   MJD: 55995.0

CENT| CLK EPO  |        BRUX       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3038 |     7     6    14 |     9    14    31 |    29   132   295 |
emr | emr 2960 |     8    10    17 |    11    17    36 |    30    63    58 |
esa | esa 2976 |     6     5    13 |     9    15    32 |    27   128   280 |
gfz | gfz 2957 |     6     3    14 |    16    17    63 |    23    65    59 |
grg | grg 2976 |     9    10    28 |    10    15    31 |    28   126   282 |
igr | igr 2975 |     6     5    12 |    10    15    30 |    27   125   276 |
igs | igs 2970 |     6     5    11 |    10    19    31 |    27   127   282 |
jpl | jpl 2960 |    11    11    46 |    11    16    32 |    30    72    65 |
mit | mit 2976 |     6     5    13 |    12    17    32 |    45    40    58 |

Table 5.1678.6   GPS week: 1678   Day: 6   MJD: 55996.0

CENT| CLK EPO  |        BRUX       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3049 |     4     5    15 |     9     8    31 |     6     8    13 |
emr | emr 2960 |     9     8    18 |    11    10    37 |    10    15    25 |
esa | esa 2976 |     5     5    14 |     9     8    29 |     6     7    15 |
gfz | gfz 2960 |     7     5    13 |    17    18    44 |     9    12    18 |
grg | grg 2976 |     7    11    23 |     9    10    29 |     8     7    16 |
igr | igr 2975 |     5     5    15 |    10     8    28 |     6     7    15 |
igs | igs 2954 |     5     5    11 |    10     8    31 |     8    11    17 |
jpl | jpl 2960 |    11    10    25 |     9    10    34 |     7    11    25 |
mit | mit 2976 |     5     4    17 |    11     8    31 |     9     8    19 |


Table 6: Earth Orientation Parameters weekly summary.                          
                                                                              
        Weekly mean and standard deviation of Centre ERP, ERP rates and       
        LOD differences with respect to IGS combined values. See Table 7 for  
        the daily summaries.                                                  
                                                                              
        Xpole,Xrt: x pole and x pole rate                          
        Ypole,Yrt: y pole and y pole rate                       
        LOD      : Length Of Day                                               
                                                                              
        AC LOD BIAS    : 10-day mean LOD bias with respect to Bulletin A     
        AC LOD BIAS RMS: RMS of AC LOD BIAS                              
                                                                              
        FLAG: "u" (used), "x" (excluded), "-" (no submission)                 
              for Xpole, Ypole, Xrt, Yrt and LOD                              

Table 6.1678   GPS week: 1678   MJD: 55990.500-55996.500

                                                         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     -20      86     120      2 |      10     18
            |      25      32      75      66      4 |       2
emr   uuuuu |       7      32     -11     201      4 |      59     61
            |      49      17     125     152     10 |       2
esa   uuuuu |     -19     -12      31    -232      0 |       2     14
            |       8      23      89      78      2 |       2
gfz   uuuuu |      -2      38     -60     -69      0 |      28     31
            |      13      28      87     137      6 |       2
grg   uuuux |      50      -1      26       8     37 |       8     28
            |      19      14      54      79     46 |       7
igr   xxxxx |     -14      11      27      -4     -7 |      11     18
            |      13      16      55      59      6 |       3
irf   xxxxx |      15      -6     -26     -14     -3 |       2     15
            |      10       9      28      32      4 |       4
jpl   uuuuu |      39     -27     126     160      1 |      48     50
            |      25      17      89      58     10 |       2
mit   uuuuu |       9     -18     -82     113     -4 |      14     20
            |      21      13      49      72      4 |       3
ngs   uuuuu |     -44       5       2      99     -1 |       9     17
            |      41      56     122     118      3 |       3
sio   xuuuu |     163      32     -35    -142     22 |      44     46
            |      18      17      47     105      5 |       5


Table 7.1678.0   GPS week: 1678   Day: 0   MJD: 55990.500

                                                         AC LOD  AC LOD
CENT  FLAG  |   Xpole   Ypole     Xrt     Yrt    LOD |    BIAS  BIAS RMS
            |   [uas]   [uas]   [uas/d] [uas/d]  [us]|    [us]    [us]
------------+----------------------------------------+------------------
cod   xxxxx |      18     -17       3      96      3 |      14     22
emr   uuuuu |      -8      22      35     165     -5 |      61     63
esa   uuuuu |      -4     -29      61    -294      1 |       5     16
gfz   uuuuu |      20      42      62     -65      6 |      28     32
grg   uuuux |      34      -2      18      39      2 |       9     33
igr   xxxxx |     -20      41     103     -40     -3 |      16     22
irf   xxxxx |      33      -3     -37      31     -5 |      11     26
jpl   uuuuu |      30       8     228      81      7 |      47     50
mit   uuuuu |      47      -8    -149     220     -5 |      20     25
ngs   uuuuu |    -118      -3    -170      46     -1 |      16     27
sio   xxxxx |     192      44     -81    -240     23 |      38     40

Table 7.1678.1   GPS week: 1678   Day: 1   MJD: 55991.500

                                                         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     -24      79      58      7 |      10     20
emr   uuuuu |     -65      36     -92     -11     -1 |      58     61
esa   uuuuu |     -24     -19       0    -142      0 |       3     16
gfz   uuuuu |      11      -8      19      75      7 |      26     31
grg   uuuux |      77       2      65      52    -24 |       8     34
igr   xxxxx |     -16      19     -33      24     -9 |      14     22
irf   xxxxx |      10     -11     -28     -31     -8 |       4     20
jpl   uuuuu |      62     -34     115     169      6 |      47     50
mit   uuuuu |      -1     -23     -95      63     -5 |      17     24
ngs   uuuuu |     -29      66      58      59     -6 |       9     21
sio   xuuuu |     143      29     -29    -212     20 |      39     41

Table 7.1678.2   GPS week: 1678   Day: 2   MJD: 55992.500

                                                         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     -74     160     143     -1 |      11     21
emr   uuuuu |     -15      44    -181     209     -3 |      60     62
esa   uuuuu |     -17     -28     110    -235     -1 |       3     16
gfz   uuuuu |      -6      12      -3     -17      2 |      29     33
grg   uuuux |      73      -1     -34      67     17 |       5     33
igr   xxxxx |     -25      10     -20       0     -5 |      14     22
irf   xxxxx |      10     -20      -8      -2     -1 |       4     20
jpl   uuuuu |      23     -26      75     190     11 |      49     52
mit   uuuuu |      -8     -32     -95     133     -8 |      17     24
ngs   uuuuu |     -27      67      25     -16      2 |      10     21
sio   xuuuu |     166       4      -2    -153     16 |      43     45

Table 7.1678.3   GPS week: 1678   Day: 3   MJD: 55993.500

                                                         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      11     181     155     -1 |       7     15
emr   uuuuu |      42      32      29     281      1 |      55     57
esa   uuuuu |     -21     -23     162    -222      0 |      -1     13
gfz   uuuuu |     -21      49    -102    -258     -3 |      26     29
grg   uuuux |      29      25     -55      72     24 |      -3     16
igr   xxxxx |      -7      -5      57    -120    -11 |       9     15
irf   xxxxx |       1     -14      23     -48      2 |      -2     11
jpl   uuuuu |      14     -28      -9      90      0 |      45     47
mit   uuuuu |     -15     -33      14      54     -8 |      11     16
ngs   uuuuu |       8      18    -151     236      4 |       5     12
sio   xuuuu |     148      15      20    -178     16 |      42     43

Table 7.1678.4   GPS week: 1678   Day: 4   MJD: 55994.500

                                                         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 |      37     -20      45     108      6 |       8     15
emr   uuuuu |      84      -1     197     415     25 |      57     58
esa   uuuuu |     -24     -25     -17    -243     -3 |       1     12
gfz   uuuuu |      -8      60    -170    -222      4 |      28     30
grg   uuuux |      52     -20      34      -7     79 |       3     15
igr   xxxxx |     -27      12      42      26      1 |       9     15
irf   xxxxx |      23      -3     -68     -42     -4 |       0     11
jpl   uuuuu |      56     -32     251     240      9 |      47     48
mit   uuuuu |      23      -8    -103      66      2 |      11     16
ngs   uuuuu |     -75      21      26     210     -2 |       7     13
sio   xuuuu |     181      49    -110    -221     30 |      45     47

Table 7.1678.5   GPS week: 1678   Day: 5   MJD: 55995.500

                                                         AC LOD  AC LOD
CENT  FLAG  |   Xpole   Ypole     Xrt     Yrt    LOD |    BIAS  BIAS RMS
            |   [uas]   [uas]   [uas/d] [uas/d]  [us]|    [us]    [us]
------------+----------------------------------------+------------------
cod   xxxxx |       8      22     138      39     -2 |      11     16
emr   uuuuu |      32      38      43     313      0 |      60     62
esa   uuuuu |     -29      30    -109    -354      2 |       2     12
gfz   uuuuu |      -5      75    -145     -97     -9 |      30     32
grg   uuuux |      37      -4      85     -12     55 |      13     31
igr   xxxxx |     -15      -2      70      27    -15 |      10     16
irf   xxxxx |      15       0     -27     -29     -1 |       0     11
jpl   uuuuu |      13     -28      98     198    -15 |      50     51
mit   uuuuu |      11     -25     -71      54     -2 |      12     17
ngs   uuuuu |     -24     -77     175     208      0 |       7     13
sio   xuuuu |     156      32       2      16     25 |      49     52

Table 7.1678.6   GPS week: 1678   Day: 6   MJD: 55996.500

                                                         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 |      44     -40      -2     237      1 |      11     16
emr   uuuuu |     -25      49    -106      35      8 |      61     63
esa   uuuuu |     -16      12      13    -135      3 |       3     11
gfz   uuuuu |      -5      36     -79     101     -5 |      29     32
grg   uuuux |      47      -7      70    -154    107 |      19     36
igr   xxxxx |      12       3     -31      54     -3 |       9     16
irf   xxxxx |      11       7     -40      23     -5 |       0     11
jpl   uuuuu |      76     -48     127     152    -12 |      49     50
mit   uuuuu |       3       1     -74     201     -1 |      12     17
ngs   uuuuu |     -42     -61      48     -50     -4 |       8     13
sio   xuuuu |     155      50     -42      -5     23 |      53     55



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