[IGSREPORT-23635] Wk 1845 IGS Final Orbits

IGS ACC igs.acc at noaa.gov
Thu Jun 4 07:25:41 PDT 2015


Author:  AC Coordinator / NOAA NGS

sum-file Version 2.0
Final IGS Orbit Combination - Week 1845   (May 17, 2015 - May 23, 2015)

Contacts: igs.acc 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 at each SP3 epoch. 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 with broadcast GPS time, the IGS clocks use
the linear combination of phase-smoothed P1 and P2 pseudorange data to remove
the 1st order ionospheric delay, with no other delay calibrations 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 over each daily arc. 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 10 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:

igs1845[0-6].sp3  IGS GPS ephemeris files in SP3 format.
igs1845[0-6].clk  IGS GPS satellite and station clocks in clock RINEX format.
igs1845[0-6].cls  IGS GPS clock combination summary report.
igs18457.erp      Earth Rotation Parameters (ERP) and their rates as well as
                  Universal Time (UT1-UTC) and Length Of Day (LOD) associated 
                  with IGS ephemerides.
igs18457.sum      Complete report.

    
REMARKS concerning the IGS Orbit Combination:                                  
---------------------------------------------

 1. The centres used in the clock combination are COD, EMR, ESA, GFZ, GRG, MIT, and
    JPL. The other centres are excluded because of poorer consistency, they provide
    broadcast clocks, or clock corrections are not provided (SIO). The clock
    information not used is still compared to the combination for completeness. The
    value of 999999.999999 microseconds, according to the SP3 format convention,
    signifies that no clock solution is available and therefore must not be used.
    
    In general, if an AC does not contribute to the terrestrial reference frame
    (i.e. the SINEX combination), then any corresponding orbits & clocks
    contributed from that AC should not be included with weight in this
    combination. This is done to ensure a high level of consistency between the TRF
    and the orbital frame. However, there is an exception for the clocks if the AC
    is the reference center. In that case, only the clocks from that AC are
    included with weight.
    
    Starting week 1707:
      cod = cof${wwww}[0-6].[clk,snx,sp3] & cod = cof${wwww}7.[erp,sum]

 2. Rapid (IGR) orbits/clocks are included in the combination for statistics only.
    Starting week 1582, a new orbit solution from CNES/GRGS (GRG) is included with
    weight. GRG clocks are included with weight starting 12-Aug-2012 (GPS Week
    1701, day 0, MJD 56151), after a procedural change to generate estimates in
    the center-of-figure frame instead of the center-of-mass frame. GRG LOD
    estimates are included for comparison only.

 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   | BRST BRST
                0  |  ESA   | 26 26
                0  |  GFZ   | ONSA TONG HOB2 TONG
                0  |  GRG   | HOLB IRKJ KELY NRMD POHN HARB IRKJ KELY POHN
                0  |  MIT   | HOB2
                1  |  ESA   | 26 26 PDEL PDEL
                1  |  GFZ   | IRKJ PDEL TONG PDEL TONG
                1  |  GRG   | 6 13 6 13 ALRT POHN POHN
                1  |  MIT   | REUN REUN
                2  |  COD   | 9 9
                2  |  EMR   | 9 4 9
                2  |  ESA   | 26 26 REUN
                2  |  GFZ   | 13 IRKJ POHN REUN TONG REUN TONG
                2  |  GRG   | REUN
                3  |  ESA   | 26 26 CHUR IRKJ CHUR
                3  |  GFZ   | BRFT NRMD REUN BRFT NRMD TONG
                3  |  GRG   | POHN POHN
                4  |  COD   | HOB2 HOB2
                4  |  ESA   | 26 26 BJFS BJFS BRST
                4  |  GFZ   | BRFT IRKJ BRFT IRKJ NOVM TONG
                4  |  GRG   | KELY POHN SYOG KELY POHN SYOG
                5  |  COD   | BRST
                5  |  ESA   | 26 26
                5  |  GFZ   | NOVM
                5  |  GRG   | 9 HARB KELY NRMD POHN SSIA ADIS HARB KELY NRMD POHN
                5  |  GRG   | SSIA
                5  |  MIT   | ZECK ZECK
                6  |  COD   | 14 14
                6  |  ESA   | 26 26 POHN
                6  |  GFZ   | CGGN HOB2 OUS2 CGGN
                6  |  GRG   | POHN POHN
                6  |  MIT   | MAG0 MAG0

 5. 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 AC clocks are
    corrected for the radial offsets of their satellite orbits compared to the
    combination.

 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  |  ESA   |  26
                0  |  GRG   |   8
                1  |  ESA   |  26
                1  |  GRG   |   8
                2  |  COD   |   9
                2  |  ESA   |  26
                2  |  GRG   |   8
                3  |  ESA   |  26
                3  |  GRG   |   8
                4  |  ESA   |  26
                4  |  GRG   |   8
                5  |  ESA   |  26
                5  |  GRG   |   8
                6  |  ESA   |  26
                6  |  GRG   |   8

 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 G09 |  4 |  4 |  4 |    |    |    |    |

 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.
    
    Starting 07-Oct-2012 (GPS Week 1709, day 0, MJD 56207) all IGS products, are
    based on the updated IGS08 frame (IGb08). For more information see IGSMAIL
    #6663.

 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 RX, RY and RZ rotations
    were estimated in the IGS SINEX combination process, performed by the IGS
    Reference Frame Coordinator at the Institut Geographique National (IGN).
    Starting on 19-Aug-2012 (GPS Week 1702; MJD=56158), ACs began contributing
    products based on 1d SINEX integrations. As a result, the SINEX combinations
    are now done daily instead of weekly, and the associated daily rotations are
    applied here to the orbits and ERPs. 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 | Day |   [mm]   [mm]   [mm]   [uas]  [uas]  [uas]   [ppb]
     -------+-----+---------------------------------------------------
       COD  |   0 |    -.7    -.5   -2.3     -35      6    -10     .79
       EMR  |   0 |    4.6    1.9    1.8       8    -24    -17     .63
       ESA  |   0 |    -.7   -1.1     .5     -20      0    -24     .71
       GFZ  |   0 |     .2    -.9   -1.5     -22    -71    -25     .82
       GRG  |   0 |    7.1    -.9    4.1       5     -1    -82     .35
       JPL  |   0 |    -.4   -1.9   -2.8     -16     16     41     .84
       MIT  |   0 |    5.1   -8.6    8.2      11      0    -21     .88
       NGS  |   0 |    5.3   -9.7   29.7    -118   -101     -7     .82
       SIO  |   0 |    2.3    -.5  -10.9     -27    -14     18     .75

       COD  |   1 |     .0    -.1   -1.7     -14     -7      1     .60
       EMR  |   1 |   11.8   -4.1    3.6      -1    -15    -33     .71
       ESA  |   1 |    -.7   -1.3     .3      -9     -5    -10     .48
       GFZ  |   1 |     .1   -1.0   -1.6     -12    -66     -8     .56
       GRG  |   1 |   11.2   -6.5    2.7     -25     13    -59     .51
       JPL  |   1 |    2.7   -8.3     .7     -13     14     32     .59
       MIT  |   1 |    5.4  -12.7   10.6      19     -2    -43     .77
       NGS  |   1 |    7.0   -8.6   18.8     -89    -78    -14     .68
       SIO  |   1 |   -1.3   -6.1  -11.4     -18    -26     14     .47

       COD  |   2 |    -.4    -.2   -2.5     -13     -7      2     .63
       EMR  |   2 |    4.2   -2.8   12.9       9    -14    -13     .62
       ESA  |   2 |    -.5   -1.4     .6      -3    -14     -3     .54
       GFZ  |   2 |     .1   -1.4   -1.2     -29    -77    -14     .62
       GRG  |   2 |    7.8   -1.3   23.1      -9     22    -44     .55
       JPL  |   2 |     .8   -9.5    9.4       8      7     20     .87
       MIT  |   2 |     .0   -8.5   15.0      -4    -10    -37     .81
       NGS  |   2 |    -.8   -9.1   27.9    -122    -55    -47     .76
       SIO  |   2 |   -5.0   -8.2    -.7     -14    -15      6     .62

       COD  |   3 |    -.3    -.7   -1.7     -19    -11    -12     .76
       EMR  |   3 |     .6   -2.3    8.9      13    -26    -14     .78
       ESA  |   3 |    -.6    -.8     .5     -10     -3     41     .56
       GFZ  |   3 |     .3   -1.3   -1.0     -23    -80    -10     .55
       GRG  |   3 |    2.6   -1.5   16.5      -6      2    -26     .71
       JPL  |   3 |   -5.3   -8.0    8.6     -24     61     27     .77
       MIT  |   3 |   -1.1   -3.7   13.9      -1     11    -57     .90
       NGS  |   3 |    5.4   -4.8   26.4     -87    -84     28     .93
       SIO  |   3 |   -1.0   -2.6     .6      -4    -16     -9     .80

       COD  |   4 |    -.2    -.6    -.8     -18    -21    -13     .65
       EMR  |   4 |   -1.3   -6.6    8.5      36     -7      5     .74
       ESA  |   4 |    -.7   -1.9    1.1      -7    -10    -10     .78
       GFZ  |   4 |    -.1   -1.2   -1.1     -22    -75    -18     .75
       GRG  |   4 |    6.3   -3.3   21.9     -21    -19   -111     .48
       JPL  |   4 |    -.4   -8.4   10.1     -48     42     16     .91
       MIT  |   4 |   -2.0   -8.8   15.9     -14    -13    -53    1.06
       NGS  |   4 |    1.8  -10.1   30.8    -128    -89    -42     .81
       SIO  |   4 |    1.3   -2.4    3.1      -5    -23     -3    1.08

       COD  |   5 |    -.3    -.4   -1.5     -13     10    -12     .57
       EMR  |   5 |    5.2   -8.3   15.5      27    -23     -4     .51
       ESA  |   5 |    -.3   -1.1    1.4     -31    -16     -7     .63
       GFZ  |   5 |    -.3   -1.2   -1.1     -15    -48    -25     .63
       GRG  |   5 |   12.3   -7.1   19.2     -10      5    -57     .24
       JPL  |   5 |    -.9  -11.7    8.4     -44     25     22     .57
       MIT  |   5 |    -.5   -8.1   16.2       7    -14    -60     .75
       NGS  |   5 |    6.2   -6.3   21.4     -84    -76    -24     .66
       SIO  |   5 |    3.3   -1.2    4.2       8    -40    -11     .69

       COD  |   6 |    -.2   -1.2   -1.3     -30      8    -31     .87
       EMR  |   6 |    3.2  -10.9   15.5      25     -9     -6     .80
       ESA  |   6 |    -.6   -1.2    1.6     -11    -16     13     .86
       GFZ  |   6 |    -.2   -1.1   -1.3     -29    -51    -34     .82
       GRG  |   6 |     .0   -7.5   16.0     -26     -6    -82     .62
       JPL  |   6 |   -2.4   -2.5   11.5     -15     43     14     .76
       MIT  |   6 |     .5  -13.1   14.1       9    -26    -37    1.02
       NGS  |   6 |    7.4   -9.9   24.3    -129   -102     11     .81
       SIO  |   6 |    1.5   -4.7    8.3      -6    -18    -24     .78


10. As inidicated in the previous remarks, the IGS final orbits are aligned to the
    IGS reference frame by pre-aligning each AC orbit with the 3 corresponding
    SINEX rotations. This approach began 27-Feb-2000 (GPS Week 1051-0; MJD 51601).
    Starting sometime prior to 19-Aug-2012 (GPS Week 1702; MJD=56158), the orbit
    combination procedures used an incorrect sign convention to apply the SINEX
    RX and RY values to the AC orbits.
    
    Also starting 27-Feb-2000 (GPS  Week 1051-0; MJD 51601), the AC orbits were
    pre-aligned using rotations derived from differences between AC and IGS
    combined x and y polar motion. These ERP rotations were intended to
    approximate day-to-day variations of the AC orbital frames when only weekly
    averaged AC TRF rotations were available (For more details, see IGSMAIL
    #2750). With the change to daily SINEX integrations starting 19-Aug-2012, the
    ERP rotations are no longer needed/applied.

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; from GPS Week 1632 through 1648 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 seven 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 1.1845.a). It also displays the computed satellite
position sigmas for the combined orbits (Table 1.1845.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 2.1845.[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 3.1845.[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 part, 
Table 5, is similar to Table 4 and contains daily precise navigation
statistics (Tables 5.1845.0-6). The sixth part, Table 6, is a weekly
summary of daily ERP combination statistics. The seventh part, Table 7,
contains the daily ERP statistics. But this is not the IGS official ERP
combination products (which come from the accompanying SINEX combination)
but provided to check combination consistency, etc.

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 1845 summary.                       (May 17, 2015 - May 23, 2015)

Table 1.1845.a   GPS week: 1845   MJD: 57159.000-57165.000

         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  244|    0     1    -5     0    16    -9  -.05   14   12 |   -1089     268     13    105
        |    0     1     3    11    13    11   .03           |     407     524
emr   80|    1    -1     0     0   -36    15   .23   11   11 |    2383    -397     16    133
        |    1     1     1    17    15     7   .03           |    1799     756
esa  150|    1     0   -11   -14     9   -26  -.43   18   15 |    -112   -1230     11    190
        |    0     0     1    26    23     6   .03           |     605    1860
gfz  204|   -1     0     0    20     4   -18   .00   12   11 |    -183     312     11     79
        |    0     1     2    18    21    13   .04           |     244     586
grg  114|    3     0    14    -4    32    46   .10   15   14 |   30577  -91994     19    207
        |    1     0     5    20    22    36   .05           |   81312  243902
igr  n/a|    0     0    -3    -4     4    -8  -.05    5    5 |    5574    -212     15     66
        |    0     0     0    20    14     5   .01           |    1544     803
jpl   80|    0     0    -1   -14    23    40   .24   10   10 |    2382    -374     15    109
        |    1     1     0    18    30    13   .04           |    1797     752
mit  349|    0    -2     1   -17   -25   -19  -.20   11   11 |    -267     -54     42    208
        |    0     1     1    29    38    21   .01           |     265     349
ngs  221|    0     0     6    33     1    -7   .02   10    9 |   -1105     311   1010   2619
        |    0     0     3    14    26    22   .04           |     414     557
sio  319|   -1     1    -4     1   -12    -9   .03   14   14 |     ---     ---    ---    ---
        |    0     0     1    24    29    24   .03           |     ---     ---


Table 1.1845.b   GPS week : 1845   MJD: 57159.000-57165.000   

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



Table 2: Daily transformation of each centre to the combined IGS orbit and
         clocks for each day of the week. The transformation displayed is the
         result of the combination after the AC orbits were pre-aligned using
         the SINEX rotations from above. Prior to Wk 1702, AC ERP rotations
         used in the pre-alignment were also displayed.
         WRMS - RMS weighted by the centres SP3 header accuracy codes.
         STA  - Number of stations in the daily solutions.
   
Table 2.1845.0   GPS week: 1845   Day: 0   MJD: 57159.000                            

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  247|    0     0    -1     4    35   -22  -.05   13   11 |    -982     174     14    115
emr   80|    1     0    -3    14   -18    21   .19   11   11 |    4722    -557     15    151
esa  150|    1     0   -11   -52    30   -29  -.41   18   14 |      17   -1730      9    170
gfz  204|    0     0    -3     7    29   -16   .07   12   11 |    -434     469     12     85
grg  113|    1     0     8    22    35    46   .04   14   13 |     -22     146     20    211
igr  n/a|    0     0    -5    -7     4    -5  -.04    5    5 |    7646    -475     16     63
jpl   80|    0     1    -1    -9    21    36   .27   10   10 |    4715    -516     15     98
mit  350|    0    -2     0    -7   -41    -2  -.22   11   10 |      45    -275     42    206
ngs  226|    0     0    11    19   -29   -11   .04   10    8 |    -918       4    889   2706
sio  322|   -2     1    -2    -7   -35    18   .02   13   13 |     ---     ---    ---    ---

Table 2.1845.1   GPS week: 1845   Day: 1   MJD: 57160.000                            

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  244|   -1     0    -2     1    25    -3  -.10   13   12 |    -805    -187     14    108
emr   80|    3     0     0    -9   -47     0   .21   11   11 |    4506   -1571     19    144
esa  150|    0     1    -9     5     3   -25  -.45   19   14 |    -936     758     10    169
gfz  206|   -2     0     0    13   -22    -1  -.01   12   11 |     113    -488     11     93
grg  113|    3     0     6   -33    43    17   .05   15   14 |     225    -300     20    214
igr  n/a|   -1     0    -3    -4    13    -2  -.05    5    5 |    7515   -1422     15     58
jpl   80|    2     3     0     0    29    37   .28   10   10 |    4529   -1552     16     99
mit  350|    0    -4     3   -15   -36    10  -.20   13   12 |     102    -483     45    227
ngs  222|   -1     0     4    29    33   -25   .04   11    8 |    -953     136    869   2150
sio  319|   -2     0    -2    12   -37     0   .07   14   13 |     ---     ---    ---    ---

Table 2.1845.2   GPS week: 1845   Day: 2   MJD: 57161.000                            

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  246|    0     3    -3     0     8     8  -.04   15   13 |   -1627     821     14    111
emr   80|    0    -1     0    -2   -52    21   .25   11   11 |    2958    -147     18    143
esa  150|    1     1   -10    -5   -11   -36  -.48   19   14 |     -35   -2607     11    186
gfz  205|   -1     0     0    19   -13   -14  -.04   11   10 |    -428     796     11     85
grg  115|    2     1    19    -5    64    46   .13   15   14 |    -471     555     20    195
igr  n/a|    0     0    -4   -24    -2    -4  -.07    5    5 |    5958    -186     15     66
jpl   80|    0    -1    -2     7   -12    61   .28   11   11 |    2918     -93     15     98
mit  350|    0    -2     0   -33    20   -37  -.18   11   11 |    -654     134     50    210
ngs  224|    0     0     5    30     1   -17   .08   10    9 |   -1627     877   1160   2799
sio  330|    0     0    -5    13    34   -10   .06   15   16 |     ---     ---    ---    ---

Table 2.1845.3   GPS week: 1845   Day: 3   MJD: 57162.000                            

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  245|    0     1    -3   -16    12    -8  -.04   14   12 |    -854     -18     13    117
emr   80|    0    -1    -1   -11   -25    14   .22   10   10 |    2457    -749     15    126
esa  150|    0     0   -10   -17     1   -14  -.44   19   14 |     470   -2143     12    257
gfz  205|    0     0     0    -2    14    -3   .00   12   11 |     132    -376     10     77
grg  114|    3     0    16    -4    17    60   .06   16   15 |     -50      58     20    187
igr  n/a|    0     0    -3   -25     0   -10  -.04    5    5 |    5393    -665     14     79
jpl   80|    0     0    -2   -13    72    26   .19    9    9 |    2471    -739     15    117
mit  350|    0    -1     0    -2   -33   -33  -.19   10   10 |    -357    -149     40    190
ngs  222|    0     0     8    57   -11    15   .01   10    9 |    -718    -228   1095   2474
sio  317|   -1     1    -5     1   -48   -40   .05   14   15 |     ---     ---    ---    ---

Table 2.1845.4   GPS week: 1845   Day: 4   MJD: 57163.000                            

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  246|    0     2    -9    13    -3   -22  -.04   14   13 |    -778     -60     13     87
emr   80|    0     0    -1    28   -29    18   .21   10   10 |    1206    -666     17    113
esa  150|    1     0   -14     1    10   -22  -.46   18   15 |     778   -3884     13    197
gfz  204|    0     1     0    57    -3   -19  -.04   13   12 |    -273     438     10     72
grg  112|    3     2    19   -21    18     5   .12   15   14 |  214975 -645113     20    210
igr  n/a|    0     0    -4     6     8   -12  -.05    5    5 |    4194    -268     15     71
jpl   80|    0     0     0   -28    37    35   .22    9    9 |    1175    -630     15    106
mit  349|    0    -2     0   -68    -4   -36  -.20   10    9 |    -285      -3     39    175
ngs  221|    0     0     6    48   -12    20   .01    8    7 |    -891     115   1041   2486
sio  317|    0     2    -5   -18    -1     6   .01   13   13 |     ---     ---    ---    ---

Table 2.1845.5   GPS week: 1845   Day: 5   MJD: 57164.000                            

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  240|    0     2    -9   -11     9    -3  -.02   14   13 |    -853     -41     13    104
emr   80|    0    -3     1   -21   -57    12   .24   11   11 |     358      47     14    138
esa  150|    1     0   -10   -48   -19   -28  -.39   18   16 |    -577    1143     11    184
gfz  204|   -1     2     2    27    -4   -40   .02   13   13 |     -56     221     13     76
grg  116|    5     0    18    22    46   118   .16   18   17 |    -110    -120     18    225
igr  n/a|    0     1    -2   -10   -20    -4  -.03    5    5 |    3889     435     15     63
jpl   80|   -1     0     0   -48   -15    56   .20   10   10 |     387      43     15    124
mit  350|    0    -1     3    25    10   -35  -.19   11   11 |    -279    -207     43    211
ngs  218|    0     1     1    36    43   -41  -.02   11   10 |    -859     -23   1297   2885
sio  311|   -1     2    -1    43    -5     4   .04   14   14 |     ---     ---    ---    ---

Table 2.1845.6   GPS week: 1845   Day: 6   MJD: 57165.000                            

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  245|   -1     2    -8    11    24   -14  -.02   13   12 |   -1727    1187     12     98
emr   80|    0    -3     0     5   -22    20   .27   11   11 |     478     858     14    118
esa  150|    0     0   -11    15    49   -28  -.40   18   15 |    -505    -151     12    170
gfz  203|   -1     2     4    20    33   -30   .01   13   13 |    -337    1128     12     69
grg  115|    4     1    10    -9    -1    29   .14   14   13 |    -504     814     20    209
igr  n/a|    0     0    -3    34    25   -18  -.06    6    5 |    4424    1096     16     66
jpl   80|    0     0     0   -10    31    30   .24   10   10 |     483     868     15    127
mit  350|    0    -1     1   -23   -92     1  -.22   12   11 |    -442     600     40    237
ngs  220|    0     1     6    15   -12     4  -.05   10    8 |   -1772    1299    719   2835
sio  317|   -1     0    -4   -33     8   -46  -.00   13   13 |     ---     ---    ---    ---

       
       
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 3.1845.0   GPS week: 1845   Day: 0   MJD: 57159.000                            

        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    9   15    7   10    5    8   10    6    8    3 |    35   43   32   41   49   35   43   40   41   39    39
   2  |    7   11   11   17   11    4    9   13    9   10    4 |    22   24   21   25   23   19   23   27   25   19    21
   3  |    8    9   14    7    9    3    9    9    6    8    3 |    31   31   33   31   25   28   31   22   29   31    28
   4  |    9   10    8    8   10    4    8    9    8    8    3 |    19   21   18   26   28   17   22   23   26   19    20
   5  |    9   13   13   12   13    4   11   13   10   14    4 |    42   48   47   36   33   41   44   36   38   42    39
   6  |   10    9   15    8   10    5   10    9    7   10    3 |    36   43   32   44   50   37   43   46   42   39    40
   7  |   14    8   12   15   18    9   10   10    8   18    4 |    25   25   20   33   27   21   25   21   26   16    21
  X8  |    2  ---  ---  ---  225   42  ---  ---  ---  ---    0 |    34  ---  ---  ---  100   30  ---  ---  ---  ---    34
   9E |   35   13   17   17   17    5   14    8   12   12    6 |   167  161  162  158  161  160  134  163  157  161   161
  10  |    6    8   14    9   10    5    6   10    8    8    3 |    15   18   14   19   22   14   20   21   22   19    16
  11  |   10    8   17   11   12    6    7    8    7   12    3 |    40   48   38   46   55   39   48   44   47   46    44
  12  |   12   16    7   18   17    4   17   10   15   15    5 |    24   27   16   31   22   19   27   19   25   15    19
  13E |   12   11   10   10   13    4   13   12    8   10    4 |    32   33   31   34   38   29   32   35   32   34    31
  14E |   15   11    6    8   17    3   13   12    8   13    4 |    26   19   16   22   21   16   20   15   19   21    16
  15E |   17   14   12   11   16    5   13   10   10    9    4 |    29   27   23   23   20   23   26   22   21   22    22
  16  |   16   13   13   17   12    4   11   17   13   20    5 |    23   19   16   25   22   17   20   19   25   12    15
  17  |    9   12   15    7   13    5    9    8   11   11    3 |    21   22   18   23   25   16   23   13   24   20    18
  18  |   12   14   13   14   14    5   12   19   10   15    5 |    43   44   42   44   44   41   43   32   43   29    39
  19  |   12   13   14   13   16    6   10   16    9   18    4 |    21   24   18   26   24   17   24   19   20   15    17
  20  |    9   14   13   13   12    6   13   15   11   16    4 |    28   27   26   31   32   25   28   30   28   25    26
  21  |    8    9   12    8   18    4    8   11    9   25    4 |    25   28   22   27   31   22   26   24   25   25    23
  22  |   10   13   13   12   14    3   10    8   12   12    4 |    36   36   36   41   44   34   36   33   38   26    34
  23E |   15   12    9   11   14    5    9   11   11   11    4 |    25   20   21   24   23   20   23   18   30   22    20
  24  |    8   10   14   11   15    4    9    7   12   13    4 |    19   21   23   21   22   20   23   15   21   22    19
  25  |   13   13   15    9   17    3   11    7   11   13    4 |    24   24   27   25   29   21   23   19   21   21    21
  26  |   16   12   72   15   12    7    9   11   12   14    4 |    65   67   68   55   68   61   69   58   67   65    63
  27  |    8   11   18    8    7    5    8   11    7   12    3 |    20   21   28   21   20   21   22   16   22   25    19
  28  |   10   11   10    9   22    4    7    9    8   16    4 |    22   23   20   24   27   19   26   19   27   23    20
  29M |   17   16    9   13   19    3   14   12   15   11    5 |    30   27   19   26   20   19   25   20   24   20    20
  30  |    7    9   14    8   13    6    9   10    7    6    3 |    19   23   22   21   23   19   25   20   24   21    20
  31  |    8    9   12    9   16    4   12   11   10   16    4 |    23   26   21   29   29   22   29   20   23   13    21
  32  |    9    8   13    7    9    5    8    7    8   14    3 |    37   39   37   36   36   36   40   38   37   43    37
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |   13   11   18   12   14    5   10   11   10   13      |T   33   34   31   34   37   29   33   30   33   30    30
 WRMS |   11   11   14   11   13    5   10   10    8   13      |NE  27   29   26   29   33   25   30   25   29   25    26
 MEDI |   10   11   13   11   13    5   10   10    9   12      |MD  25   27   23   27   27   21   26   22   26   22    21

Table 3.1845.1   GPS week: 1845   Day: 1   MJD: 57160.000                            

        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
------+--------------------------------------------------------+---------------------------------------------------------
   1M |    8    8   15    7   12    6    7   10    4    9    3 |    24   34   23   26   34   26   35   27   31   28    27
   2  |    9   10   12   15   11    4    8   12   10   11    4 |    19   19   18   16   13   13   20   19   19   14    14
   3  |    9    9   13    5   10    3    7    9    5    7    3 |    27   29   28   26   27   24   28   18   27   27    24
   4M |   12    7    9    8   10    5    6    9    8    9    3 |    20   18   15   19   17   14   18   16   24   16    15
   5  |    7   13   14   14   14    4   11   13   11   14    4 |    27   38   31   24   29   28   35   26   29   31    28
   6  |    8    9   17    5    8    7    9    9    8   15    3 |    27   32   22   27   31   23   34   30   30   29    27
   7  |   14    9   11   10   13    9    7   10   10   15    4 |    27   28   21   26   26   23   29   21   31   22    23
  X8  |    2  ---  ---  ---  241   27  ---  ---  ---  ---    0 |    36  ---  ---  ---  101   23  ---  ---  ---  ---    37
   9E |   38   16   18   17   28    7   24   12   25   17    8 |   178  174  174  173  169  172  208  175  170  177   172
  10  |    7    6   14    7   13    3    8   11    6   11    3 |    13   15   12   12   14   10   15   13   20   15    11
  11  |    9    7   17    9   11    7    7    8    6   11    3 |    30   38   29   30   37   30   39   32   36   39    32
  12  |   13   16    8   16   20    5   14    9   12   12    5 |    26   26   15   27   22   19   26   19   25   18    20
  13E |   11   10    7   11   22    5   11   19   12   11    4 |    21   20   20   21   20   19   23   19   22   22    18
  14E |   13   12    6   11   17    5   11   11    8   14    4 |    18   18   12   16   16   13   17   11   18   19    12
  15E |   15   13   13   15   18    5   13   19   14   11    5 |    25   23   16   22   23   17   23   27   27   20    19
  16  |   14   15   14   17   13    6   11   17   11   17    5 |    23   22   17   22   21   19   23   18   25   17    17
  17  |   11   13   11    9   16    5    9   14    7   15    4 |    23   23   15   22   26   17   24   15   24   22    18
  18M |   14   14   13   14   17    5   11   22   12   16    5 |    45   47   45   42   47   42   43   32   50   33    41
  19  |   16   11   12   13   18    4   10   15   11   19    4 |    24   27   16   21   24   18   25   18   27   15    18
  20  |    9   13   12   15   14    6   11   15   11   18    4 |    21   22   21   20   14   17   21   20   19   15    16
  21M |    9    7   11    9   11    3    8   12   11   12    3 |    21   22   17   20   20   17   23   19   24   24    19
  22M |   11    9   13   13   14    3    9   11   10   11    4 |    28   30   28   27   30   25   30   26   33   19    26
  23E |   10   13   10    9   14    6   13   12   11   12    4 |    16   18   19   19   23   15   16   14   27   20    16
  24  |   11   11   16    8   15    4    9    9   10   11    4 |    18   18   22   19   19   16   20   13   21   17    16
  25  |   13   14   16   11   19    3    8    8    9   13    4 |    24   24   25   24   24   20   23   17   24   22    20
  26  |   16   11   76   16   15    8   11   10   12   13    5 |    46   48   46   38   47   42   49   40   46   45    42
  27  |    7   11   15    7   11    5    8   11   10   15    3 |    19   23   24   18   21   19   23   15   26   27    19
  28  |   10   10   10    7   19    5    8   11    8   19    4 |    22   23   18   22   27   19   24   19   27   20    19
  29  |   21   15    7   16   21    4   13   12   14   14    5 |    28   21   14   21   24   15   22   14   23   17    16
  30  |    5    8   14    7    9    6   10   11    7    8    3 |    25   27   26   23   24   24   29   22   30   29    24
  31  |   11    9   11   10   14    4    9   10    8   18    4 |    21   25   17   23   26   19   25   16   25   14    18
  32M |   11    8   14    9   13    8    7   21    6   14    4 |    47   53   51   50   52   49   54   51   53   54    50
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |   13   11   18   12   15    5   10   13   11   14      |T   30   31   27   28   32   26   33   26   32   28    27
 WRMS |   12   11   14   11   14    5   10   12    8   13      |NE  24   26   22   23   28   21   26   20   26   23    22
 MEDI |   11   11   13   10   14    5    9   11   10   13      |MD  24   24   21   22   24   19   24   19   27   22    19

Table 3.1845.2   GPS week: 1845   Day: 2   MJD: 57161.000                            

        Weighted Average                                            Orbit Dynamics (7 days)
 PRN  |  cod  emr  esa  gfz  grg  igr  jpl  mit  ngs  sio  IGS |   cod  emr  esa  gfz  grg  igr  jpl  mit  ngs  sio   IGS
------+--------------------------------------------------------+---------------------------------------------------------
   1  |   11    9   14    9    9    4    9    8    9    9    3 |    32   38   26   26   42   29   36   29   37   29    31
   2  |   10   11   13   12   12    5   10   12   10   15    4 |    19   23   19   21   24   17   25   24   28   19    20
   3  |    8    7   15    6   10    4    6    6   10   10    3 |    26   28   28   23   21   24   30   19   27   25    23
  X4  |    8    6    9    9   15    5    9    8   10  ---    3 |    20   19   18   16   28   16   16   18   27  ---    17
   5  |   12   10   14   10   15    4    9   11   12   14    4 |    32   39   33   31   26   30   35   28   32   33    30
   6  |   10    9   18    8    8    5   12   10   11   10    4 |    30   38   26   34   45   31   41   37   39   35    34
   7  |   15   10   13   10   15    6   10   11   14   20    4 |    25   29   19   25   24   20   26   20   30   16    21
  X8  |    3  ---  ---  ---  207   36  ---  ---  ---  ---    0 |    43  ---  ---  ---   65   25  ---  ---  ---  ---    43
  X9E |  107   19   18   14   22   10  ---   12   34   16    8 |   184  171  172  171  177  168  ---  172  171  167   171
  10  |   11   10   15   10   12    5    9   14    8   10    4 |    16   20   14   20   25   16   20   18   24   20    17
  11  |   11    7   16   11   14    5    8    7    9   12    3 |    33   41   31   31   47   33   40   34   40   40    35
  12  |   11   16    8   16   18    4   14   11   14   15    5 |    23   30   20   28   21   21   28   18   30   17    21
  13E |   18   12    7    9   13    5   10   13   11   12    4 |    26   28   23   24   22   23   26   24   23   22    22
  14E |   18    9    6    9   18    5   12    8    8   16    4 |    21   16   13   19   17   13   17   13   21   19    13
  15E |   22   14    8   11   16    5   13    9    8   12    4 |    32   23   14   24   19   17   21   19   22   18    18
  16  |   18   18   13   17   12    6   12   15    9   17    5 |    23   25   16   21   18   17   24   17   25   14    17
  17  |   10   11   13   10   15    5   12   12   12   14    4 |    22   23   17   21   29   19   25   17   24   22    18
  18  |   15   11   13   14   20    6   13   20   11   19    5 |    33   35   30   31   37   29   36   24   36   23    29
  19  |   20   11   12   10   19    5   13   14    9   23    5 |    27   25   16   19   25   16   25   17   22   14    16
  20  |   15   11   14   10   15    6   10   15   13   22    5 |    26   27   25   27   29   22   27   25   26   21    23
  21  |   10    8   11    9   16    4    7    9    8   16    3 |    22   26   19   22   30   19   25   22   26   23    21
  22  |   12   10   13   13   18    4   10    9   12   18    4 |    29   30   26   30   38   26   32   25   33   20    26
  23E |   37    9   11   12   14    9   15   11   13   15    5 |    43   24   22   25   22   22   28   21   29   23    22
  24  |   10    9   15    7   15    4    9    8    9   14    3 |    17   22   22   21   19   18   21   14   22   21    18
  25  |   15   13   17    9   18    3   10    9   12   14    4 |    24   27   27   24   21   20   25   16   27   20    21
  26  |   19   12   76   16   15   13   11   10   14   12    5 |    53   54   51   42   53   48   55   45   51   49    48
  27  |   10   13   17    6   14    5   10   10    8   13    4 |    23   23   27   20   22   20   23   15   23   23    19
  28  |   13   10   10    8   17    5    9   13    8   21    4 |    22   26   20   23   28   21   25   23   28   25    21
  29  |   16   15    9   12   20    5   14   10   12   15    5 |    25   24   17   21   23   17   26   16   25   18    18
  30  |   10    8   15    9   10    5    8   11    9    9    3 |    21   29   24   20   22   21   27   21   28   24    22
  31  |   14   11   10   11   15    4   10   10    8   17    4 |    24   28   19   24   24   20   27   17   26   12    20
  32  |    8    8   12    7   14    5    7    9    5   12    3 |    30   33   30   29   32   29   35   32   36   35    31
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |   15   11   19   11   15    5   11   11   10   15      |T   32   33   27   29   33   27   28   27   33   28    28
 WRMS |   13   11   14   10   14    5   11   10    9   16      |NE  26   29   23   25   29   22   28   22   29   23    24
 MEDI |   12   10   13   10   15    5   10   10   10   14      |MD  25   27   22   24   25   21   26   21   27   22    21

Table 3.1845.3   GPS week: 1845   Day: 3   MJD: 57162.000                            

        Weighted Average                                            Orbit Dynamics (7 days)
 PRN  |  cod  emr  esa  gfz  grg  igr  jpl  mit  ngs  sio  IGS |   cod  emr  esa  gfz  grg  igr  jpl  mit  ngs  sio   IGS
------+--------------------------------------------------------+---------------------------------------------------------
   1  |    9    9   16    9   11    3   10    7    6    8    3 |    34   40   31   36   46   34   41   33   41   33    35
   2  |    8    8   13   14   13    5    7   12   10   13    4 |    22   21   17   23   23   17   19   23   26   20    18
   3  |    6    6   13    8    9    4    7    6    8    9    2 |    23   28   25   22   21   23   29   20   28   27    23
   4  |    7    5    9   10   11    3    6    7    6    9    2 |    22   21   20   25   30   20   21   19   26   18    20
   5  |   10   10   15   12   16    4   10   11   11   15    4 |    40   43   40   33   28   36   41   32   33   37    35
   6  |   10    9   16    9   13    5    9   10    8   14    3 |    32   38   25   36   43   31   36   39   40   34    35
   7  |   14    8   11   12   14    5    7    9    9   18    4 |    24   25   16   27   23   21   25   20   25   15    20
  X8  |    2  ---  ---  ---  220   41  ---  ---  ---  ---    0 |    39  ---  ---  ---   78   37  ---  ---  ---  ---    39
   9E |   43    7   17   16   13    5   10    7    9    6    6 |   148  148  147  145  151  146  121  146  150  146   147
  10  |   10    7   14    9   16    5    5   11    9    8    3 |    14   17   13   21   23   14   16   17   22   15    14
  11  |   10    7   17   11   16    4    6    7    8   12    3 |    38   44   36   39   52   37   44   38   43   42    40
  12  |   14   13    9   17   22    4   14   11   12   14    5 |    23   25   15   28   24   17   24   16   25   15    18
  13E |   11   12    9    9   16    5   11   10    9   18    4 |    20   18   13   19   16   11   19   16   17   29    15
  14E |   15   10    7    9   16    5    9    9    8   13    3 |    21   16   11   18   11   13   16   12   18   17    13
  15E |   15   12    8   13   17    4   14    8   11   13    4 |    26   21   14   22   17   17   22   18   21   16    17
  16  |   17   14   11   17   14    3   10   13   10   16    4 |    27   24   17   22   21   18   23   16   27   13    18
  17  |   14   12   11    9   15    6    8   13   11   15    4 |    26   23   14   23   25   17   23   18   23   19    18
  18  |   14   13   14   15   18    6   12   19   13   18    5 |    37   37   33   36   40   34   38   28   38   23    33
  19  |   13   11   11   13   20    5   12   10   10   20    4 |    22   23   18   23   28   18   25   16   22   12    17
  20  |   13   10   15   15   17    6   10   15   11   18    4 |    26   26   21   29   30   21   23   25   28   20    22
  21  |   10    7   11   10   14    4    7    8   14   14    3 |    26   27   21   29   31   20   27   25   27   24    24
  22  |   13    8   13   13   17    4    8    9   10   15    4 |    34   35   32   38   43   32   36   32   40   23    33
  23E |   17    9   11   12   15    5   10    9    9    8    4 |    24   24   22   27   26   22   27   23   30   23    23
  24  |   11    7   14    7   16    4    7   10   12   17    4 |    16   21   19   18   20   16   20   16   19   18    16
  25  |   12   10   14   14   20    4   10    9   13   11    4 |    24   24   24   31   29   21   23   18   23   21    21
  26  |   20   11   78   16   17   12    9   11   11   13    5 |    59   61   56   47   60   53   60   50   59   54    54
  27  |   11   17   15    8   11    4    6    6    8   12    4 |    20   25   26   20   22   19   21   14   23   22    19
  28  |    9   11    9   10   18    5   10   11    9   18    4 |    21   25   14   21   25   17   21   21   23   17    18
  29  |   13   13    9   15   25    5   14    9   13   11    4 |    24   22   16   25   24   15   21   17   23   16    17
  30  |    7    7   14    8   11    4    9   10    9    9    3 |    20   26   21   21   21   20   25   20   23   24    21
  31  |   10   10    9   12   16    3    8    9    7   15    3 |    24   26   18   27   26   20   25   16   21   13    19
  32  |   10    7   11    8   12    6    7    7    5   11    3 |    34   35   34   33   34   33   37   34   38   38    34
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |   14   10   19   12   16    5    9   10   10   14      |T   30   31   26   31   34   27   30   27   32   27    28
 WRMS |   12   10   14   11   15    5    9   10    9   15      |NE  27   28   22   26   31   23   27   22   28   23    24
 MEDI |   11   10   13   12   16    5    9    9    9   13      |MD  24   25   21   27   26   20   25   20   26   21    20

Table 3.1845.4   GPS week: 1845   Day: 4   MJD: 57163.000                            

        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    9   17   10    9    3    9    7    4    9    3 |    29   39   27   32   45   31   41   30   38   31    33
   2  |   11    6   14   15   14    6    8   11    8   12    3 |    22   22   18   23   24   17   23   23   29   20    20
   3  |    9    7   14    6    9    3    8    6    7    7    3 |    24   26   24   23   20   23   27   18   28   25    22
   4  |    5    6   11   11   12    3    8    7    7    9    3 |    14   19   18   22   29   16   20   19   23   18    18
   5  |   15   12   15   11   17    6   12   11   12   18    4 |    38   39   41   32   25   33   38   30   30   35    32
   6  |   11    8   19   10   10    6    8    9    6    9    3 |    32   35   25   35   42   31   38   36   41   34    34
   7  |   13    8   16   16   11    6    7   11    9   16    4 |    26   25   18   29   25   21   26   19   28   15    21
  X8  |    5  ---  ---  ---  243   59  ---  ---  ---  ---    0 |    51  ---  ---  ---  115   23  ---  ---  ---  ---    51
   9E |   32    8   16   18   14    5    9    6    7    8    5 |    78   76   78   79   80   76   73   76   81   79    77
  10  |   13    7   14   10   15    5    6   11    5   10    3 |    17   19   15   23   28   15   20   16   28   18    17
  11  |    8    9   18   11   13    4    8    7    5   12    3 |    33   40   32   37   51   34   43   36   41   38    37
  12  |   18   13    8   19   20    4   13   10   11   11    5 |    26   25   13   28   22   18   25   16   25   16    18
  13E |   10   13   10   10   18    6    9   14    8   11    4 |    26   25   25   25   31   22   26   22   24   26    22
  14E |   15   10   11   11   20    5   10    7    9   15    4 |    18   16   10   17   15   12   15   11   21   18    11
  15E |   14   12    8   14   16    6   14    9    8   13    4 |    24   21   14   23   20   17   21   19   22   19    18
  16  |   13   15   11   20   14    4   12   14   10   16    5 |    20   22   15   22   22   16   21   17   23   14    15
  17  |   16    9   13    9   17    5    9   11    9   14    4 |    27   24   18   23   29   19   25   18   27   16    19
  18  |   16   12   15   15   18    5   12   18   10   19    5 |    27   27   23   27   30   23   26   19   29   17    21
  19  |   13   12   12   14   18    5   10    9    9   18    4 |    22   22   17   21   26   17   23   15   21   14    16
  20  |   15   13   15   12   16    7   12   16   11   22    5 |    23   26   20   25   30   19   24   23   30   24    21
  21  |    9    8   12    8   13    4    8    6    8   17    3 |    20   25   18   22   29   19   24   21   26   22    21
  22  |   12   10   14   15   16    4    9    8    8   14    4 |    26   28   25   31   34   25   27   25   30   18    25
  23E |   18    8   11   14   14    6   10    9    6    8    3 |    20   16   12   13   14   11   15   12   20   11    11
  24  |   13    9   16   10   16    5    8    9    9   12    4 |    16   20   22   18   18   17   21   17   18   14    16
  25  |   14   10   18   12   20    3    9    7    7   15    4 |    20   23   25   23   24   18   20   17   22   20    19
  26  |   17   12   69   16   13    5    9   11   10   12    4 |    48   55   57   45   57   50   55   48   51   53    50
  27  |   10   13   15    7    9    4    7    8    6   10    3 |    23   22   26   19   21   19   21   13   22   20    18
  28  |   10   11    9    9   17    5    9   11    8   18    4 |    23   26   16   23   27   19   23   19   27   22    19
  29  |   17   14    9   14   24    4   11   10   10   13    4 |    25   23   16   23   20   17   23   15   24   16    17
  30  |    6    9   16    9   10    4    9   11    7    8    3 |    21   28   23   23   26   21   27   16   26   25    21
  31  |   11   12    9   12   15    4    9   10    8   15    4 |    24   27   17   26   26   20   26   20   23   12    20
  32  |   10    6   14    9   12    5    7    6    7   12    3 |    33   33   31   31   32   30   32   31   35   37    31
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |   14   10   18   13   15    5    9   10    8   13      |T   27   28   23   27   32   23   28   23   29   24    24
 WRMS |   13   10   15   12   14    5    9    9    7   13      |NE  26   27   23   26   32   22   27   21   28   22    24
 MEDI |   13   10   14   11   15    5    9    9    8   12      |MD  24   25   20   23   26   19   25   19   27   20    20

Table 3.1845.5   GPS week: 1845   Day: 5   MJD: 57164.000                            

        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    8   15   10   15    4   11    7   10    6    3 |    25   39   22   31   38   28   37   27   25   31    29
   2  |   13    7   14   17   12    5    8   14   11   14    4 |    23   26   22   21   21   20   26   23   24   19    21
   3  |    9    8   15    8   13    3    8    8   10    8    3 |    25   27   24   22   21   22   27   17   28   25    22
   4  |    7    9    8   13   14    3    9   11   10    9    3 |    16   20   15   20   20   15   18   19   15   18    15
   5  |   14   10   17   15   20    5   11   12   13   17    5 |    40   42   38   33   28   34   41   31   35   36    35
   6  |   10    7   18   11   16   11    8   11    8   12    4 |    27   40   23   34   40   29   39   34   32   34    32
   7  |   12    8   14   13   13    8    7   12   10   17    4 |    25   30   18   25   25   22   27   19   25   13    22
  X8  |    5  ---  ---  ---  225   40  ---  ---  ---  ---    0 |    48  ---  ---  ---   61   30  ---  ---  ---  ---    48
   9E |   26    9   14   15   16    3   11    7    8    6    4 |   101  101   99  100  106   99   87   99  102  100   100
  10  |   10    8   14   13   22    5    8   10    9    9    4 |    18   23   18   22   28   17   22   20   20   21    19
  11  |    9    9   18   11   18    5    9    8    9   10    4 |    24   38   25   28   42   27   36   30   24   34    29
  12  |   21   15   10   20   22    5   12   11   17   14    5 |    32   32   21   28   29   23   28   21   23   18    23
  13E |   11   12   10   11   13    4   11   11   10   11    4 |    28   29   26   25   22   23   29   24   19   26    24
  14E |   18   13    6   10   22    4   12   16   12   14    5 |    29   23   19   19   19   20   21   19   24   18    19
  15E |   16   12    9   15   16    3   14   12   11   12    4 |    25   25   18   24   20   21   25   19   20   20    19
  16  |   15   16    8   18   14    4   11   12   11   13    4 |    25   25   18   22   21   19   24   19   20   16    19
  17  |   14   11   11   12   20    7   13   11   13   17    4 |    28   26   20   24   29   22   27   17   25   21    21
  18  |   16   13   12   16   22    5   11   20   13   21    5 |    35   38   31   31   33   31   37   26   35   24    30
  19  |   17   10   11   14   22    4   11   11    9   21    5 |    27   28   21   23   29   20   26   18   21   14    19
  20  |   16   11   16   14   18    6   10   17   12   23    5 |    26   31   24   28   30   23   29   27   25   26    25
  21  |    9   10   12   11   18    4    9    9   11   18    4 |    25   30   22   24   30   23   27   24   25   25    24
  22  |   14    9   10   16   19    5    9   10    9   14    4 |    30   33   27   30   33   27   32   24   29   21    27
  23E |   19   10   10   14   16    3   12   13    7   10    4 |    25   26   20   22   21   21   24   21   21   17    20
  24  |   16   10   15   12   17    4   12    9   16   15    4 |    23   25   27   22   23   23   25   20   24   20    22
  25  |   11    8   15   13   25    4   10    8   11   12    4 |    21   27   29   24   29   23   26   21   23   21    23
  26  |   14   12   72   17   15    5   10   11    9   13    4 |    46   53   53   42   50   45   52   43   42   45    45
  27  |    7   14   13    9   14    3    8    9    9   12    3 |    22   26   29   22   27   23   26   19   27   25    23
  28  |   10   10   10   13   17    6    9   11   10   20    4 |    20   27   17   23   25   19   24   20   22   19    19
  29  |   15   14    9   14   29    5   13   13   12   15    5 |    24   26   15   22   28   19   25   20   21   15    18
  30  |    9    6   13    9   12    5    9   10    8    7    3 |    26   33   29   26   25   27   32   23   26   28    27
  31  |   10   12    9   14   13    3   11   11    9   16    4 |    27   31   22   25   28   24   28   21   22   17    22
  32  |   10   10   12   10   19    4    7    8    7   12    3 |    29   31   27   27   33   28   31   30   31   35    29
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |   14   11   18   13   18    5   10   11   11   14      |T   29   32   26   28   31   26   30   25   27   25    27
 WRMS |   13   11   16   13   17    5   10   11   10   14      |NE  27   31   25   26   30   24   29   23   25   23    25
 MEDI |   12   10   12   13   17    4   10   11   10   13      |MD  25   29   22   24   28   23   27   21   24   21    23

Table 3.1845.6   GPS week: 1845   Day: 6   MJD: 57165.000                            

        Weighted Average                                            Orbit Dynamics (7 days)
 PRN  |  cod  emr  esa  gfz  grg  igr  jpl  mit  ngs  sio  IGS |   cod  emr  esa  gfz  grg  igr  jpl  mit  ngs  sio   IGS
------+--------------------------------------------------------+---------------------------------------------------------
   1  |    7    9   15   10    8    4   10   11    5    9    3 |    38   47   38   44   51   42   47   41   45   39    42
   2  |    8   11   14   13   11    5    8   16   11   13    4 |    22   27   22   24   25   19   24   28   27   20    21
   3  |    7    6   13    9    9    5    6    7    6    7    2 |    28   31   30   26   23   28   31   21   32   30    26
   4  |    8    8   10   11   13    3    8   12    6   10    3 |    19   25   23   29   32   24   24   27   29   23    23
   5  |   11   11   18   11   12    6   11   11   15   16    4 |    50   52   53   46   38   46   51   40   39   50    45
   6  |   10   10   17    9    8    7    8   10   10   11    3 |    36   44   32   42   47   39   45   47   50   40    42
   7  |   13    9   13   15   15    7    9   10   10   15    4 |    27   29   21   32   26   25   27   20   29   22    23
  X8  |    5  ---  ---  ---  231   48  ---  ---  ---  ---    0 |    38  ---  ---  ---   98   39  ---  ---  ---  ---    37
   9E |   20   11   15   16   12    6   10    7    6   10    4 |   115  118  115  115  114  114  106  116  114  115   115
  10  |   11    8   15   11   19    7    8    9    7    7    3 |    17   22   18   27   29   19   21   20   25   20    19
  11  |    9    9   17   10   13    5    8   15    8   10    4 |    40   50   40   45   57   44   51   47   51   47    46
  12  |   13   14   12   19   13    6   13   11   11   13    4 |    24   28   14   29   23   18   24   17   22   18    19
  13E |   10   14   12   10   15    6   12   10   11    9    4 |    22   18   20   23   21   17   20   19   17   21    16
  14E |   21   11    9   10   11    4   15   11   10   11    4 |    31   20   16   23   21   18   22   20   24   20    19
  15E |   17   14   12   16   13    4   15   13   14    9    5 |    23   25   16   25   19   19   23   23   23   21    19
  16  |   16   14    7   19   14    6   11   12   10   17    4 |    25   24   17   22   20   17   22   16   20   16    16
  17  |   15   13   11    9   15    6   11   12    9   15    4 |    25   23   15   21   28   18   25   15   24   17    17
  18  |   15   12   13   17   16    5   11   20   11   15    5 |    30   33   30   35   38   30   32   26   35   23    29
  19  |   18   12   10   15   18    5   11   14    9   18    5 |    27   25   20   24   26   18   25   16   22   19    18
  20  |   12   11   17   12   11    7   12   16   12   18    4 |    25   29   27   34   33   24   28   29   32   25    26
  21  |   12   10   11   12    8    3    9   11   14   16    4 |    27   31   21   32   32   23   28   26   29   26    26
  22  |    9    9   13   13   12    5    8   10   11   13    4 |    33   38   36   42   43   35   36   31   38   26    34
  23E |   19   11   11   18   14    6   10   13    9   11    4 |    28   23   26   27   23   21   23   20   25   22    20
  24  |    9   11   15   10   12    5    7    7    8   10    3 |    17   22   22   20   23   19   23   18   18   18    18
  25  |   10   10   15   12   16    4    9   10    9   17    4 |    19   25   24   22   24   18   23   18   19   22    19
  26  |   14   11   70   20   11   13   10    9   12   14    5 |    61   68   69   52   66   61   66   59   58   63    60
  27  |   14   14   13   10   13    5    8   12    9   11    4 |    25   20   26   21   23   19   20   16   23   22    18
  28  |    9   10    9   11   16    5    8   12    5   16    3 |    21   26   18   23   27   20   24   20   24   18    19
  29  |   10   14    9   17   21    5   16   12   14   15    5 |    21   21   16   24   24   17   22   17   24   13    15
  30  |    9    9   15    9   14    8    9   10    8    6    3 |    25   31   27   28   25   26   30   21   27   24    24
  31  |    7   11   10   11   13    3   12   10    9   16    4 |    22   30   20   23   26   21   27   21   23   14    20
  32  |   10    7   12   10   14    5    8    8    5   12    3 |    30   33   33   31   32   30   33   31   32   36    30
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |   13   11   18   13   14    6   10   12   10   13      |T   30   33   29   32   35   29   32   28   32   28    28
 WRMS |   12   11   15   13   13    5   10   11    8   13      |NE  28   31   27   29   34   26   30   25   29   26    26
 MEDI |   10   11   13   11   13    5   10   11    9   13      |MD  25   28   23   27   26   21   25   21   27   22    21



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 4.1845   GPS week: 1845   MJD: 57159.0-57165.0

CENT| CLK EPO  |        BRUX       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3042 |U    7     7    21 |U    6     7    33 |U    9     9    21 |
emr | emr 2975 |     8     9    17 |U    6     7    28 |    10    10    21 |
esa | esa 2976 |     7     6    18 |U    5     6    27 |     8     9    19 |
gfz | gfz 2975 |U    5     6    16 |U    5     8    25 |U    8     9    20 |
grg | grg 3070 |U    9     6    22 |U    7     8    36 |    11    10    23 |
igr | igr 2974 |     6     6    15 |     5     7    26 |     9    10    20 |
igs | igs 2975 |     6     6    15 |     5     6    25 |     8     9    20 |
jpl | jpl 2961 |     7     7    17 |U    5     7    27 |U    9    10    22 |
mit | mit 2976 |     6     7    17 |U    6     8    33 |U    9    10    20 |



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 5.1845.0   GPS week: 1845   Day: 0   MJD: 57159.0

CENT| CLK EPO  |        BRUX       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3046 |     8     7    26 |     7     9    37 |     8     6    23 |
emr | emr 2976 |     7     8    14 |     6     7    28 |     8    10    23 |
esa | esa 2976 |     7     5    16 |     6     7    35 |     7     8    20 |
gfz | gfz 2976 |     5     4    11 |     5     9    26 |     8     8    20 |
grg | grg 3072 |     9     5    18 |     8     8    27 |    10     8    22 |
igr | igr 2976 |     6     5    11 |     5     8    27 |     8     9    20 |
igs | igs 2976 |     6     4    11 |     5     8    27 |     7     8    20 |
jpl | jpl 2976 |     7     6    13 |     6     9    30 |     7     9    22 |
mit | mit 2976 |     5     4    12 |     6     9    29 |     7     8    18 |

Table 5.1845.1   GPS week: 1845   Day: 1   MJD: 57160.0

CENT| CLK EPO  |        BRUX       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3030 |     8    10    19 |     4     6    39 |     9    11    26 |
emr | emr 2976 |     9    10    20 |     6     5    28 |    10    13    20 |
esa | esa 2976 |     8     7    23 |     5     6    33 |    10    10    18 |
gfz | gfz 2976 |     6     7    23 |     4     7    30 |     9    10    19 |
grg | grg 3072 |     8     6    27 |     6     6    35 |    11    11    17 |
igr | igr 2976 |     7     7    21 |     4     5    29 |     9    11    18 |
igs | igs 2976 |     7     8    22 |     4     5    31 |     9    11    17 |
jpl | jpl 2976 |     7     7    20 |     4     6    29 |    10    11    19 |
mit | mit 2976 |     7     7    24 |     6     6    31 |    10    10    19 |

Table 5.1845.2   GPS week: 1845   Day: 2   MJD: 57161.0

CENT| CLK EPO  |        BRUX       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3030 |     9     7    32 |     9     6    39 |    11     8    19 |
emr | emr 2971 |     8    10    22 |     6     8    46 |    11    12    23 |
esa | esa 2976 |     7     7    23 |     5     6    19 |     7    11    19 |
gfz | gfz 2971 |     6     5    16 |     6    10    23 |     8    12    22 |
grg | grg 3062 |     9     7    18 |    10    11    71 |    11    11    23 |
igr | igr 2967 |     6     6    17 |     5     5    30 |     8    12    20 |
igs | igs 2971 |     6     6    18 |     4     6    21 |     8    11    22 |
jpl | jpl 2875 |     8     7    21 |     5     7    23 |    10    13    25 |
mit | mit 2976 |     5     6    14 |    10    12    68 |    10    14    22 |

Table 5.1845.3   GPS week: 1845   Day: 3   MJD: 57162.0

CENT| CLK EPO  |        BRUX       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3050 |     7     6    18 |     5     7    32 |    10    13    21 |
emr | emr 2976 |     8     8    15 |     7     8    25 |    13    15    26 |
esa | esa 2976 |     7     7    18 |     5     7    28 |    11    13    23 |
gfz | gfz 2976 |     6     5    17 |     5     8    28 |    11    13    24 |
grg | grg 3072 |    10     5    24 |     6     8    30 |    13    12    26 |
igr | igr 2976 |     6     7    17 |     5     8    28 |    11    14    24 |
igs | igs 2976 |     6     6    15 |     4     7    27 |    11    13    23 |
jpl | jpl 2976 |     8     6    16 |     5     7    34 |    11    14    26 |
mit | mit 2976 |     7     7    20 |     6     9    28 |    11    13    25 |

Table 5.1845.4   GPS week: 1845   Day: 4   MJD: 57163.0

CENT| CLK EPO  |        BRUX       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3053 |     7     6    21 |     5     6    28 |     8     8    24 |
emr | emr 2976 |     6     8    13 |     6     5    21 |     9     7    19 |
esa | esa 2976 |     6     5    13 |     4     6    23 |     7     7    17 |
gfz | gfz 2976 |     4     4    11 |     4     8    22 |     8     6    17 |
grg | grg 3072 |     9     4    19 |     6     7    29 |    11     8    22 |
igr | igr 2976 |     5     5     9 |     4     6    22 |     8     7    18 |
igs | igs 2976 |     5     5     9 |     4     6    21 |     8     7    17 |
jpl | jpl 2975 |     6     5    11 |     4     6    23 |     8     7    18 |
mit | mit 2976 |     5     5    10 |     5     8    23 |     8     7    17 |

Table 5.1845.5   GPS week: 1845   Day: 5   MJD: 57164.0

CENT| CLK EPO  |        BRUX       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3050 |     6     7    15 |     5     8    27 |     9     9    16 |
emr | emr 2975 |     7     9    17 |     6     7    25 |     8     7    18 |
esa | esa 2976 |     5     7    17 |     5     6    26 |     8     8    16 |
gfz | gfz 2975 |     4     6    14 |     5     7    25 |     8     8    19 |
grg | grg 3071 |     6     5    22 |     7     7    35 |    11    10    23 |
igr | igr 2975 |     5     7    14 |     5     7    27 |     8     9    18 |
igs | igs 2975 |     5     7    14 |     5     6    25 |     8     9    18 |
jpl | jpl 2975 |     6     8    16 |     5     7    27 |     7     7    19 |
mit | mit 2976 |     6     9    17 |     6     6    30 |     7     7    20 |

Table 5.1845.6   GPS week: 1845   Day: 6   MJD: 57165.0

CENT| CLK EPO  |        BRUX       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3039 |     6     6    18 |     6     6    28 |    10     9    20 |
emr | emr 2976 |    10    10    21 |     8     7    23 |     9     7    19 |
esa | esa 2976 |     8     6    18 |     6     8    25 |     7     7    22 |
gfz | gfz 2976 |     7     8    17 |     6     9    24 |     8     6    21 |
grg | grg 3072 |    10     7    23 |     6     9    29 |    12    11    26 |
igr | igr 2975 |     8     5    14 |     5     8    21 |     8     8    21 |
igs | igs 2976 |     8     8    17 |     5     7    22 |     8     8    22 |
jpl | jpl 2976 |     9     9    21 |     5     7    24 |     8     9    25 |
mit | mit 2976 |     7    10    20 |     6     8    26 |     7     7    23 |


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 6.1845   GPS week: 1845   MJD: 57159.500-57165.500

                                                         AC LOD  AC LOD
CENT  FLAG  |   Xpole   Ypole     Xrt     Yrt    LOD |    BIAS  BIAS RMS
            |   [uas]   [uas]   [uas/d] [uas/d]  [us]|    [us]    [us]
------------+----------------------------------------+------------------
cod   uuuuu |     -27      -2      40     -87     -3 |      15     30
            |      25       7      92     142      5 |       2
emr   uuuuu |      57      22     -90      59     -6 |      39     46
            |      23      19      96      94     17 |       4
esa   uuuuu |     -23      16      11    -102     -5 |      22     33
            |      19      25      39      47      4 |       1
gfz   uuuuu |     -16      -6     -28       1     -2 |      18     31
            |      18      21     180      82      4 |       2
grg   uuuuu |     -23      -9      -8    -120      4 |      30     39
            |      22      15      70     108      7 |       4
igr   xxxxx |       2       7      60     -55     -3 |       3     25
            |      12      22      47      58      4 |       2
irf   xxxxx |      20       5     -15       3      1 |       2     25
            |       9      11      45      18      3 |       2
jpl   uuuuu |     -23      12      45      24     -5 |      32     42
            |      21      25     109      91      6 |       2
mit   uuuuu |       2      10     -55      25      5 |      29     38
            |      22      14      69      60      2 |       3
ngs   uuuuu |      -4     -56      84     -37      7 |      16     29
            |      35      41     171      95      4 |       4
sio   uuuux |      48      26     -22     212      4 |      79     82
            |      20      26      44     103      4 |       3


Table 7.1845.0   GPS week: 1845   Day: 0   MJD: 57159.500

                                                         AC LOD  AC LOD
CENT  FLAG  |   Xpole   Ypole     Xrt     Yrt    LOD |    BIAS  BIAS RMS
            |   [uas]   [uas]   [uas/d] [uas/d]  [us]|    [us]    [us]
------------+----------------------------------------+------------------
cod   uuuuu |     -29       1      65       0     -6 |      17     31
emr   uuuuu |      22      -9      35     -40    -23 |      47     53
esa   uuuuu |     -41      63     -24    -119      1 |      25     35
gfz   uuuuu |     -44      12    -230     -88      1 |      19     33
grg   uuuuu |     -15     -19    -165      -2      4 |      28     37
igr   xxxxx |      12      19      -3      22      4 |       3     25
irf   xxxxx |      23      26     -45     -18     -2 |       3     26
jpl   uuuuu |     -10      23     141      93      2 |      36     46
mit   uuuuu |      -9      -4     -57     -14      2 |      29     39
ngs   uuuuu |      47     -68     126     -55      7 |      14     29
sio   uuuux |      75      31      14     259      3 |      77     81

Table 7.1845.1   GPS week: 1845   Day: 1   MJD: 57160.500

                                                         AC LOD  AC LOD
CENT  FLAG  |   Xpole   Ypole     Xrt     Yrt    LOD |    BIAS  BIAS RMS
            |   [uas]   [uas]   [uas/d] [uas/d]  [us]|    [us]    [us]
------------+----------------------------------------+------------------
cod   uuuuu |     -29      -7     160      60     -2 |      14     30
emr   uuuuu |      49      35     -43     -76    -29 |      41     47
esa   uuuuu |     -28      -5      50    -151     -9 |      22     33
gfz   uuuuu |       8     -12     -55     -71      0 |      16     30
grg   uuuuu |     -21       5      19    -102     18 |      26     36
igr   xxxxx |      -3      18      14     -28      0 |       1     25
irf   xxxxx |      38       2     -12     -11      3 |       0     26
jpl   uuuuu |     -44       3     -57     -86     -5 |      32     42
mit   uuuuu |      37      12     -74      57      4 |      26     36
ngs   uuuuu |     -25     -26       7      94      7 |      12     28
sio   uuuux |      67       2      42     293      6 |      76     80

Table 7.1845.2   GPS week: 1845   Day: 2   MJD: 57161.500

                                                         AC LOD  AC LOD
CENT  FLAG  |   Xpole   Ypole     Xrt     Yrt    LOD |    BIAS  BIAS RMS
            |   [uas]   [uas]   [uas/d] [uas/d]  [us]|    [us]    [us]
------------+----------------------------------------+------------------
cod   uuuuu |      12      -1     -37      50    -12 |      14     30
emr   uuuuu |      41      36    -141      45     -8 |      37     45
esa   uuuuu |     -18      16     -54     -20     -9 |      21     33
gfz   uuuuu |     -20     -28     144     -74     -4 |      15     30
grg   uuuuu |     -59      -4      29    -260      7 |      28     37
igr   xxxxx |     -13      37      74     -94     -6 |       2     25
irf   xxxxx |      18      -8      26      15      5 |       0     26
jpl   uuuuu |      -3     -28     209     -83      2 |      31     41
mit   uuuuu |      20      11     -24      70      7 |      26     36
ngs   uuuuu |     -31      11    -130     -25     14 |      12     28
sio   uuuux |      57     -12     -22     358     -1 |      77     80

Table 7.1845.3   GPS week: 1845   Day: 3   MJD: 57162.500

                                                         AC LOD  AC LOD
CENT  FLAG  |   Xpole   Ypole     Xrt     Yrt    LOD |    BIAS  BIAS RMS
            |   [uas]   [uas]   [uas/d] [uas/d]  [us]|    [us]    [us]
------------+----------------------------------------+------------------
cod   uuuuu |     -17       2       3    -118     -2 |      13     30
emr   uuuuu |      65      44    -168     112      1 |      35     43
esa   uuuuu |       0       2      51    -100     -7 |      21     33
gfz   uuuuu |      -4     -22     270     104      3 |      15     30
grg   uuuuu |     -11     -22      33    -181      0 |      29     38
igr   xxxxx |      11       6      51    -151     -6 |       2     25
irf   xxxxx |      19       3      21      16      5 |       0     26
jpl   uuuuu |     -48     -11      57      30    -13 |      31     41
mit   uuuuu |     -25      19     -17      57      7 |      27     37
ngs   uuuuu |      19     -44    -124    -177      7 |      14     29
sio   uuuux |      22      23       5     210      4 |      77     80

Table 7.1845.4   GPS week: 1845   Day: 4   MJD: 57163.500

                                                         AC LOD  AC LOD
CENT  FLAG  |   Xpole   Ypole     Xrt     Yrt    LOD |    BIAS  BIAS RMS
            |   [uas]   [uas]   [uas/d] [uas/d]  [us]|    [us]    [us]
------------+----------------------------------------+------------------
cod   uuuuu |     -11     -15     134     -56      0 |      15     30
emr   uuuuu |      56      32    -234     155      6 |      36     44
esa   uuuuu |     -17      10      30    -124     -6 |      22     33
gfz   uuuuu |      -4      -3      -3      65     -5 |      18     31
grg   uuuuu |     -22       5      12    -171      3 |      32     40
igr   xxxxx |      -1      13     136     -85     -4 |       4     25
irf   xxxxx |      16      -1      41      32      3 |       2     26
jpl   uuuuu |     -37      29     -95      -5     -5 |      32     41
mit   uuuuu |      -2      17      57      84      8 |      29     38
ngs   uuuuu |      -6     -81     157    -118      4 |      17     30
sio   uuuux |      34      46     -64     103     -1 |      79     83

Table 7.1845.5   GPS week: 1845   Day: 5   MJD: 57164.500

                                                         AC LOD  AC LOD
CENT  FLAG  |   Xpole   Ypole     Xrt     Yrt    LOD |    BIAS  BIAS RMS
            |   [uas]   [uas]   [uas/d] [uas/d]  [us]|    [us]    [us]
------------+----------------------------------------+------------------
cod   uuuuu |     -57       8    -100    -244      2 |      18     30
emr   uuuuu |      75       8      -6      45     -6 |      38     45
esa   uuuuu |      -6      34      21    -141     -3 |      23     33
gfz   uuuuu |     -15     -18    -147      80      2 |      20     31
grg   uuuuu |     -41     -31       7    -170     -2 |      36     41
igr   xxxxx |      17     -13      94     -15     -4 |       6     24
irf   xxxxx |      11      13     -74      -2     -2 |       5     25
jpl   uuuuu |       5      31      76      51    -12 |      33     42
mit   uuuuu |      10      28    -154       5      4 |      33     40
ngs   uuuuu |     -52    -118     279      63      7 |      20     31
sio   uuuux |      51      65     -55     201      5 |      82     85

Table 7.1845.6   GPS week: 1845   Day: 6   MJD: 57165.500

                                                         AC LOD  AC LOD
CENT  FLAG  |   Xpole   Ypole     Xrt     Yrt    LOD |    BIAS  BIAS RMS
            |   [uas]   [uas]   [uas/d] [uas/d]  [us]|    [us]    [us]
------------+----------------------------------------+------------------
cod   uuuuu |     -57      -4      56    -302      2 |      16     29
emr   uuuuu |      91      10     -71     172     20 |      36     43
esa   uuuuu |     -53      -9       3     -58     -4 |      22     32
gfz   uuuuu |     -31      30    -173     -12     -9 |      19     31
grg   uuuuu |      10       6       8      46     -4 |      36     41
igr   xxxxx |     -12     -29      56     -31     -8 |       5     23
irf   xxxxx |      12      -2     -59     -10     -1 |       4     24
jpl   uuuuu |     -22      38     -18     166     -3 |      30     38
mit   uuuuu |     -17     -12    -113     -86      4 |      32     40
ngs   uuuuu |      21     -66     272     -38      3 |      21     31
sio   uuuux |      27      27     -73      63     11 |      82     85



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