[IGSREPORT-29198] Wk 2248 IGS Final Orbits

acc acc at igs.org
Sun Feb 26 22:51:45 UTC 2023


Author:  AC Coordinator / GA MIT 

sum-file Version 2.0
Final IGS Orbit Combination - Week 2248   (Feb 05, 2023 - Feb 11, 2023)

Contacts: acc at igs.org


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:

IGS0OPSFIN_${yyyy}${doy}0000_01D_15M_ORB.SP3  IGS GPS ephemeris files in SP3
                                              format.
IGS0OPSFIN_${yyyy}${doy}0000_01D_05M_CLK.CLK  IGS GPS satellite and station
                                              clocks in clock RINEX format.
IGS0OPSFIN_${yyyy}${doy}0000_01D_01D_CLS.SUM  IGS GPS clock combination summary
                                              report.
IGS0OPSFIN_${yyyy}${doy}0000_07D_01D_ERP.ERP  Earth Rotation Parameters (ERP)
                                              and their rates as well as
                                              Universal Time (UT1-UTC) and
                                              Length Of Day (LOD) associated 
                                              with IGS ephemerides.
IGS0OPSFIN_20230360000_07D_01D_SUM.SUM        Complete report.

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

 1. The centres used in the clock combination are COD, EMR, ESA, GFZ, GRG, 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.
    

 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  |  ESA   | NRMD
                0  |  GFZ   | TONG
                0  |  GRG   | 13 13 KIRI SVTL
                0  |  MIT   | 19
                1  |  COD   | ADIS ASCG CKSV MAYG
                1  |  ESA   | NRMD NRMD YEL2
                1  |  GRG   | 17 CCJ2 CCJ2 GAMB SVTL
                1  |  JPL   | BADG
                2  |  COD   | ASCG CKSV FAIR
                2  |  ESA   | FAIR NRMD FAIR NRMD SVTL
                2  |  GRG   | JFNG SCOR JFNG KIRI SCOR SCUB
                3  |  COD   | ASCG CPVG
                3  |  ESA   | AREQ NRMD AREQ KOUR NRMD SVTL WTZR
                3  |  GFZ   | CPVG PTGG CPVG
                3  |  GRG   | 13 13 AREQ KIRI
                3  |  JPL   | BADG
                4  |  COD   | ASCG GUAM HRAO SEYG
                4  |  ESA   | NRMD SCUB GUAM NRMD
                4  |  GFZ   | 13 13 AREQ KOKB AREQ GOLD KOKB PIE1
                4  |  GRG   | CPVG CRO1 CZTG HRAO SEYG AREQ CZTG HRAO SEYG
                4  |  JPL   | CPVG
                5  |  COD   | CRO1
                5  |  ESA   | FAIR FAIR
                5  |  GFZ   | 13 SYOG SYOG TASH UNSA
                5  |  GRG   | CZTG SVTL
                6  |  COD   | CHUR
                6  |  ESA   | NRMD NRMD
                6  |  GFZ   | AREQ SCUB TASH AREQ PTVL SCUB TASH
                6  |  GRG   | CZTG CZTG

 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
               ----+--------+---------------
                2  |  SIO   | ALL (high Transformation - See Table 2)
                3  |  SIO   | ALL (high Transformation - See Table 2)
                4  |  SIO   | ALL (high Transformation - See Table 2)
                5  |  SIO   | ALL (high Transformation - See Table 2)
                6  |  SIO   | ALL (high Transformation - See Table 2)

 7. Starting 5-Nov-2006 (GPS Week 1400, day 0, MJD 54044) until 16-Apr-2011 (GPS
    Week 1631, day 6, MJD 55667) all IGS products, including the IGS combined
    orbits, are based on the IGS realization of the ITRF2005 reference frame
    (IGS05). For more information see IGSMAIL #5447. The IGS05 frame is also the
    basis for the homogeneously reprocessed IGS products from GPS Weeks 730 to 1459
    (1994-2007); see IGSMAIL #6136.
    
    Starting 17-Apr-2011 (GPS Week 1632, day 0, MJD 55668) all IGS products, are
    based on the IGS realization of the ITRF2008 reference frame (IGS08). For more
    information see IGSMAIL #6354.
    
    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.
    
    Starting 29-Jan-2017 (GPS Week 1934, day 0, MJD 57782) all IGS products,
    are based on the IGS realization of the ITRF2014 reference frame (IGS14).
    For more information see IGSMAIL #7399.
    
    Starting 17-May-2020 (GPS Week 2106, day 0, MJD 58986) all IGS products,
    are based on the updated reference frame (IGb14).
    For more information see IGSMAIL #7921.
    
    Starting 28-Nov-2022, all IGS products, are based on the IGS realization of
    the ITRF2020 reference frame (IGS20). Starting from the same date, the IGS
    products are based on the repro3 standards, including long filename formats.
    For more information see IGSMAIL #8238, #8256, #8274 and #8282.
    

 8. Small rotations were applied to all the AC orbit and ERP values in order to
    align them to the current IGS reference frame. These 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 |   -1.3     .1   -1.1      -4     -6     -4     .07
       ESA  |   0 |     .7     .1    -.9       3    -17      1    -.34
       GFZ  |   0 |     .5    -.8    -.5     -13     -7     21     .53
       GRG  |   0 |     .7    -.0    -.9      13      5     -4     .12
       JPL  |   0 |    5.3   -3.5    8.7     -22     31    -35    1.03
       MIT  |   0 |    3.9   -3.7   17.6     -17    -13    -13     .20
       NGS  |   0 |    5.4    5.3   -3.0      38     -3    -35     .46
       SIO  |   0 |    2.2    -.4    9.3      54    -56    101     .28

       COD  |   1 |   -1.6    -.2    -.9      -9     -2      8     .21
       ESA  |   1 |     .3     .6    -.2      14     -9      6    -.36
       GFZ  |   1 |    -.1     .2     .3     -14    -11     13     .41
       GRG  |   1 |     .5     .0    -.7      19     11    -10     .01
       JPL  |   1 |    4.7   -1.0    3.1     -24     55    -24     .78
       MIT  |   1 |    3.0   -1.5   18.8     -14    -16      5     .34
       NGS  |   1 |    -.7     .8     .8      14     19      1     .44
       SIO  |   1 |    3.5    -.0    7.8      33    -86    122     .22

       COD  |   2 |   -1.8    -.5   -1.5      -8     -2      8     .11
       ESA  |   2 |     .4     .4    -.8      23    -28     -7    -.23
       GFZ  |   2 |     .0     .4    -.3     -11      6     10     .36
       GRG  |   2 |     .6     .7   -1.7      18    -10    -10    -.03
       JPL  |   2 |    6.6     .6     .2     -19     55    -36    1.01
       MIT  |   2 |    3.1    -.6   20.4       5     -1     -3     .36
       NGS  |   2 |    4.2   -1.4    4.3     -18     33      9     .33
       SIO  |   2 |    5.8    2.1   11.3      85    -90    138     .33

       COD  |   3 |   -2.2    -.5   -1.6       2     -3      7     .10
       ESA  |   3 |     .7    -.4   -1.7      -3     -8     -2    -.44
       GFZ  |   3 |     .3    -.5    -.3     -26      1     19     .28
       GRG  |   3 |     .7     .2   -1.3      17      5      4    -.04
       JPL  |   3 |    7.8    2.1    3.1     -24     32    -34     .78
       MIT  |   3 |    4.2    1.0   24.1      13     -2      3     .13
       NGS  |   3 |    2.9   -1.4    8.6     -28     44    -14     .15
       SIO  |   3 |    5.2    1.3   17.8     104    -56    145     .08

       COD  |   4 |   -2.0    -.6   -1.5       1      1      9     .12
       ESA  |   4 |     .7    -.1   -1.6       7     -8    -10    -.67
       GFZ  |   4 |    -.3     .3    -.4     -11     -2      4     .51
       GRG  |   4 |     .4    -.3   -1.2      26     12      8    -.08
       JPL  |   4 |   12.6   -3.3     .9       3     43    -32     .86
       MIT  |   4 |    4.4   -3.2   23.6      -4      0    -12     .38
       NGS  |   4 |    1.9   -4.0    4.1     -15     21      4    -.01
       SIO  |   4 |    5.4   -1.7   13.5      31    -84    153     .17

       COD  |   5 |   -1.5    -.3   -1.3      14    -14      1     .16
       ESA  |   5 |    1.0    -.3   -1.6       1    -13     -4    -.39
       GFZ  |   5 |     .4    -.5    -.2     -21     -4     10     .52
       GRG  |   5 |     .2    -.2   -1.3      28     14      7    -.08
       JPL  |   5 |   14.1   -3.0   -2.0       8     49    -61     .97
       MIT  |   5 |    5.4   -1.8   22.9     -15    -13      4     .26
       NGS  |   5 |    8.6   -7.7     .5     -12     10     33     .24
       SIO  |   5 |    7.8   -2.1   16.9      43   -112    141     .22

       COD  |   6 |   -1.2    -.1   -1.1       7     -9     -9     .16
       ESA  |   6 |     .2     .2   -1.2       0      3     -2    -.34
       GFZ  |   6 |    -.4     .0     .1     -25      5    -20     .49
       GRG  |   6 |     .5    -.8   -1.3       1     -1     22     .05
       JPL  |   6 |    6.0   -1.0     .2     -24     77    -81     .64
       MIT  |   6 |     .7   -1.6   23.7       6      5    -32     .21
       NGS  |   6 |    4.2   -2.7    3.8     -10     25    -15     .22
       SIO  |   6 |     .9   -2.9   22.2      43     -8    140     .30


 9. 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.

10. Starting 5-Nov-2006 (GPS Week 1400, day 0, MJD 54044) until 16-Apr-2011 (GPS
    Week 1631, day 6, MJD 55667) the absolute antenna model is introduced (IGSMAIL
    #5438). The antenna phase center offsets and phase center variations are given
    in the file:
        https://files.igs.org/pub/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:
        https://files.igs.org/pub/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.
    
    Starting 29-Jan-2017 (GPS Week 1934, day 0, MJD 57782) the absolute antenna
    model file has been updated to igs14.atx to be consistent with IGS14.
    See IGSMAIL #7399 for more information
        https://files.igs.org/pub/station/general/igs14.atx
    
    Starting 28-Nov-2022, the absolute antenna model file has been updated to
    igs20.atx to be consistent with IGS20.
    See IGSMAIL #8238 and #8256 for more information
        https://files.igs.org/pub/station/general/igs20.atx
    
    The JPL solution did not use IGS20/igs20.atx until GPS Week TBA, which caused
    their orbit and clock residuals to be higher during that period than for the other
    centres; from GPS Week 2238 through TBA, the JPL solution is excluded from the
    weekly SINEX combination, as well as from orbit and clock combinations.
    


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 1.2248.a). It also displays the computed satellite
position sigmas for the combined orbits (Table 1.2248.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 2.2248.[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 3.2248.[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 5.2248.0-6). 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 2248 summary.                       (Feb 05, 2023 - Feb 11, 2023)

Table 1.2248.a   GPS week: 2248   MJD: 59980.000-59986.000

         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  843|   -1     0     3     8    -8    17   .03    7    7 |    -633     186      9    104
        |    0     0     0    12    14    17   .01           |      73     249
esa  150|    0     0     3    14   -12   -11  -.07    9    9 |    -514     -91      4     58
        |    0     0     1    15    11    12   .02           |     279     426
gfz  132|    0     0     1    19     0    -4   .09   10   10 |      80     -47      9     82
        |    0     1     1    13    18    12   .02           |     214     322
grg  114|    0    -2    -9    -1     0     0  -.07    9    8 |       6      -7      9    115
        |    0     0     0    15    17    23   .02           |      70     165
igr  n/a|    0     0    -3     0    10    -4   .04    5    5 |   10219    1319     11     85
        |    0     0     0    14    21    16   .02           |    2619     611
jpl   80|    0     0    -2    -5    -1   -23   .17   24   24 |    -346     -21     71    157
        |    0     0     2    22    19     9   .02           |     395     469
mit  372|    0     1     3    -8     1   -25   .02    8    7 |   -2475    8320   1241  13428
        |    0     0     0    32    34    25   .02           |   11772   12601
ngs  282|    0     0    -3   -23   -13     0  -.03   10    9 |    -626     178    808   1616
        |    0     0     1    26    29     9   .01           |      86     172
sio  360|    0     0    -2   129   495   119   .01   10    9 |     ---     ---    ---    ---
        |    0     0     1   128   322    22   .01           |     ---     ---


Table 1.2248.b   GPS week : 2248   MJD: 59980.000-59986.000   

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



Table 2: Daily transformation of each centre to the combined IGS orbit and
         clocks for each day of the week. The transformation displayed is the
         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 2.2248.0   GPS week: 2248   Day: 0   MJD: 59980.000                            

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  844|   -1     0     3    16   -32    13   .02    8    8 |    -662     122      8    101
esa  150|    0     0     5    37   -30   -19  -.06    9    9 |    -378     113      5     64
gfz  132|    0    -1     2    34   -34    -8   .09   10   11 |    -115     244     10     86
grg  109|    0    -1    -9    26   -23   -11  -.07    8    8 |      -2      60     10    114
igr  n/a|    0     0    -1    28   -12   -14   .04    5    5 |    7207     533     12     76
jpl   80|   -2    -1     0    21   -23   -12   .16   24   24 |     131    -823     72    158
mit  372|    0     0     2   -47    25   -36   .04    6    6 |  -17444   28035     61  12942
ngs  287|   -1     1    -4   -10   -64    -9  -.04   10    9 |    -708     201    665   1378
sio  358|    1     0     0   -15    99    86   .00    7    7 |     ---     ---    ---    ---

Table 2.2248.1   GPS week: 2248   Day: 1   MJD: 59981.000                            

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  846|   -1     0     4    22   -25     4   .05    8    8 |    -602     -92     10    101
esa  150|    0     1     3     5   -18   -22  -.06   10   10 |    -242    -607      4     62
gfz  135|   -1     0     1    11     0   -10   .05   11   11 |     174      65     10     79
grg  112|    0    -2    -8   -11    26   -42  -.07    9    8 |     -58     -72      9    105
igr  n/a|    0     0    -1    -8    -5   -25   .01    5    5 |    7677    1096     12     90
jpl   80|   -1     0     0   -10    -5   -27   .16   24   24 |    -877     476     71    157
mit  372|    0     0     3   -11   -56   -22   .03    6    6 |  -15224   25389   6145  19569
ngs  270|    0     0    -4    15    -6    -5  -.04   11   10 |    -613      -6    675   1425
sio  360|    0     0    -2   -24    89    90   .01    7    7 |     ---     ---    ---    ---

Table 2.2248.2   GPS week: 2248   Day: 2   MJD: 59982.000                            

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  850|   -1     0     3    17     0    18   .04    7    6 |    -553     -61     10     99
esa  150|    0     0     1    25    -9     6  -.07    9    8 |    -485      88      4     57
gfz  134|    0     0     1     7     2    12   .09    8    8 |     448    -539      9     81
grg  113|    0    -2   -10    -8    -2    -7  -.07    9    9 |      39     239     10    120
igr  n/a|    0     0    -3    -5    18    11   .04    5    5 |    9142     645     11     78
jpl   80|    0     0    -3     6     4   -15   .17   24   24 |     196    -396     72    140
mit  372|    0     1     2     2     8   -22  -.01    7    7 |   -5037     372     61  11587
ngs  284|    1     0    -2   -57   -14   -11  -.02   11    9 |    -536     -14    944   2002
sio  362|    1     0    -2    52   346   142  -.00   11   10 |     ---     ---    ---    ---

Table 2.2248.3   GPS week: 2248   Day: 3   MJD: 59983.000                            

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  847|   -1     0     2    -2     7    16   .02    7    7 |    -740     543     10    109
esa  150|    0     0     4    20   -21     1  -.04    8    8 |    -467    -415      4     55
gfz  134|   -1    -1    -1    33   -12    15   .09    9    9 |    -224     288     10     85
grg  117|    1    -1   -10     6   -19    12  -.03    9    8 |    -106     -52      8     98
igr  n/a|    0     0    -4    11   -13    -4   .06    5    5 |    9500    1515     12    102
jpl   80|   -1     0    -1    -4   -24   -27   .18   24   24 |    -611     271     70    153
mit  372|    0     1     2   -13    49   -42  -.01    8    8 |   -1993     884    118  13986
ngs  289|    0     0    -1   -37   -11    11  -.05   10    8 |    -733     375    815   1610
sio  363|    0     0    -1   138   658   137  -.01   14   13 |     ---     ---    ---    ---

Table 2.2248.4   GPS week: 2248   Day: 4   MJD: 59984.000                            

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  840|   -1     0     2    11     1    26   .01    6    6 |    -712     500     10     97
esa  150|    1     0     3    -9    -8   -18  -.06   10   10 |   -1118     670      4     58
gfz  131|    0     1     2     2    12    -8   .10    9   10 |      89    -420      8     90
grg  115|    0    -3   -10    -3     9    18  -.08    8    8 |      79    -276     10    134
igr  n/a|    0     0    -2   -13    10    -4   .04    5    4 |   10902    1637     12     84
jpl   80|    0     0    -3   -18     0   -25   .20   24   24 |    -573    -101     72    153
mit  372|    0     1     3    34    12   -23   .03    9    9 |   13979    1952   1411  14017
ngs  281|    0     0    -4   -48   -30    -3  -.05   11   10 |    -682     419    882   1742
sio  358|    0     0    -3   233   660   117  -.00   10   10 |     ---     ---    ---    ---

Table 2.2248.5   GPS week: 2248   Day: 5   MJD: 59985.000                            

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  833|    0     0     2     5    -5    -7   .02    6    6 |    -559     114     10    115
esa  150|    0     1     4    16     3   -23  -.09    9    9 |    -457    -142      4     53
gfz  132|   -2     0     3    31    20   -13   .11   11   10 |     121     131      9     77
grg  116|    1    -2   -10     5     5     0  -.09    8    7 |      90     -71     10    127
igr  n/a|    0     0    -2    -4    38   -16   .05    4    4 |   12771    1523     11     81
jpl   80|    0     0    -5    13     9   -40   .17   24   25 |    -422      -4     72    185
mit  372|    0     1     3   -50   -23    25   .05    9    8 |   -2067     163     95  12394
ngs  283|    0     0    -4    -1    29    11  -.01   10    8 |    -502      80    839   1595
sio  363|    1     0    -1   216   675   129   .02   12   11 |     ---     ---    ---    ---

Table 2.2248.6   GPS week: 2248   Day: 6   MJD: 59986.000                            

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  844|   -1     0     3   -11    -3    49   .02    7    6 |    -608     181      9    111
esa  150|    0     1     4     3    -2    -3  -.09    9    9 |    -453    -347      5     62
gfz  128|    0     0    -1    12    10   -15   .12   10    9 |      73    -101     11     82
grg  119|    1    -2    -9   -22     6    26  -.06    9    8 |       0     121      9    109
igr  n/a|    0     0    -4    -4    34    20   .03    5    5 |   14338    2290     13     90
jpl   80|    0     1    -4   -46    31   -16   .13   23   23 |    -270     428     69    155
mit  372|    0     1     2    26    -5   -56   .04    8    7 |   10459    1450    802   9505
ngs  280|    0     0    -4   -23     5     2  -.04   11    9 |    -612     196    840   1564
sio  361|    0     0    -2   302   937   132   .02    9    8 |     ---     ---    ---    ---

       
       
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 3.2248.0   GPS week: 2248   Day: 0   MJD: 59980.000                            

        Weighted Average                                       Orbit Dynamics (7 days)
 PRN  |  cod  esa  gfz  grg  igr  jpl  mit  ngs  sio  IGS |   cod  esa  gfz  grg  igr  jpl  mit  ngs  sio   IGS
------+---------------------------------------------------+----------------------------------------------------
   1  |    6    9    8    6    5   13    5    9    7    3 |    37   37   35   36   35   36   36   35   37    35
   2  |    7    6   11    9    5   10    4    7    6    3 |    46   45   47   44   46   46   48   48   49    45
   3  |    8   11   12    5    6   12    6    8    7    3 |    39   38   40   38   38   38   34   38   39    37
   4E |   11   22   10   10    6   52    9   13   10    5 |    42   51   43   45   44   51   44   43   48    44
   5  |    7    7   11    7    5   10    3    9    7    3 |    47   43   48   43   44   47   42   45   44    43
   6  |    8    8   12    7    6    9    5    7    9    3 |    40   40   38   40   38   39   41   39   43    40
   7  |    9    5    9    6    5   10    8    8    7    3 |    66   61   66   61   64   66   62   63   64    63
   8E |    8   10    8   10    6   15    5   12    9    3 |    40   42   40   40   40   40   44   39   46    41
   9E |   11    9   10    7    4   10    4   12    9    3 |    57   57   53   57   58   58   58   60   63    58
  10  |    6   10    9    5    3   10    6    7    9    3 |    36   36   39   35   35   36   31   34   34    34
  11  |    8    8   15    8    4   59    4   11    5    3 |    63   63   61   64   61   68   62   63   64    62
  12  |    7    7    7    4    3    9    4    5    5    2 |    63   62   61   58   60   64   61   62   59    61
  13  |    9    7   10   16    5   10   10    9    9    4 |    52   52   51   53   52   53   54   49   56    51
  14  |   10    6    9    7    8   48   10   15    8    4 |    49   49   51   51   51   57   50   51   51    49
  15E |    7   11    8    6    6   10    6    8    6    3 |   117  117  116  116  117  116  116  114  114   115
  16  |    7    5    7    6    4    8    4   12    8    2 |    41   41   42   40   41   42   40   38   43    40
  17E |    8   11   11   10    6   13    5    8    7    3 |    64   69   65   63   68   66   66   68   67    65
  18  |    8    8   11    7    5   52    5   11    6    3 |    67   67   67   69   67   72   71   70   70    68
  19E |    6   10   10   12    6   10    5   10    8    3 |    62   53   59   63   56   54   60   55   58    59
  20  |    8    9    8    9    4   10    3   11    6    3 |    32   30   30   30   30   33   30   32   34    30
  21  |    8    7   11    8    4   13    7    8    7    3 |    37   37   35   34   35   37   36   38   39    35
 X22E |    6  ---   11    9    6    8    5    8  ---    4 |    34  ---   40   35   37   35   32   38  ---    34
  23  |    9    9   12    6    4   58    4   10    6    3 |    47   47   50   48   47   61   46   45   47    46
  24  |   13    9   10    5    4   11    7    7    3    3 |    33   31   30   31   30   37   31   32   33    31
  25  |    5   10   20    7    3   11    5    9    8    4 |    34   35   39   31   33   38   33   35   34    33
  26  |    7   10    6    8    4   11    5   11    4    3 |    41   43   41   40   40   46   38   37   39    39
  27E |    7    8    9    6    5   14    6   13    5    3 |    36   36   37   36   34   33   37   33   39    35
 X28  |   11    6  ---    9   16  ---    6  ---  ---    4 |   136  137  ---  135  140  ---  136  ---  ---   136
  29E |   14    8    6   15    5   11    6   13   10    4 |    81   76   76   83   77   79   78   81   78    79
  30  |    9   11    9    7    5    9    7   12    8    3 |    46   47   46   45   47   48   48   47   47    46
  31  |    4    7    9    6    4   10    4    9    4    2 |    61   60   63   54   59   63   57   57   60    58
  32E |    8    8   12    9    5   12    6   12    9    3 |    41   43   43   42   43   45   38   47   44    41
------+---------------------------------------------------+----------------------------------------------------
 RMS  |    8    9   10    8    5   24    6   10    7      |T   52   53   50   51   52   51   51   49   51    51
 WRMS |    8    9   11    8    5   24    6    9    7      |NE  50   49   46   48   49   48   49   45   46    49
 MEDI |    8    8   10    7    5   11    5    9    7      |MD  46   47   46   44   44   47   44   45   47    44

Table 3.2248.1   GPS week: 2248   Day: 1   MJD: 59981.000                            

        Weighted Average                                       Orbit Dynamics (7 days)
 PRN  |  cod  esa  gfz  grg  igr  jpl  mit  ngs  sio  IGS |   cod  esa  gfz  grg  igr  jpl  mit  ngs  sio   IGS
------+---------------------------------------------------+----------------------------------------------------
   1  |    8   10   10    5    5   14    5   10    9    3 |    25   27   24   24   24   25   22   25   27    23
   2  |   10    8   12    9    5   13    6   10    7    3 |    32   32   30   30   31   30   30   33   32    30
   3  |    7   12   10    6    6   12    6    9    7    3 |    29   30   29   28   28   29   26   28   33    27
   4E |   11   25   16   12    6   49    7   11   10    5 |    20   34   19   25   23   31   23   21   32    23
   5  |   10    6   11    6    4    9    6    9    8    3 |    28   24   27   27   26   28   26   31   28    25
   6  |    7    8   15    6    5   11    5    7    8    3 |    21   22   21   20   21   23   21   21   25    20
   7  |    7    6    9    9    3   11    8   12    6    3 |    32   27   29   27   30   34   32   30   31    29
   8E |    6   11    8   10    5   15    6   10    8    3 |    34   33   32   34   32   32   33   33   36    32
   9E |    7    8   16    9    4   10    5   11    8    3 |    24   26   24   24   24   24   25   26   31    24
  10  |    6   10    8    4    4   11    7   11    9    3 |    31   32   33   31   32   35   31   31   33    30
  11  |    8    9   15    9    4   57    5   15    6    4 |    28   28   29   30   29   31   31   36   36    30
  12  |    5    6    9    6    3    8    5    9    6    2 |    43   40   41   43   41   47   43   43   42    41
  13E |   10    8    8   13    8   10    9   11    9    4 |    90   88   90   87   86   92   86   89   86    87
  14  |   11    7    7    8    5   49    6   11   13    3 |    36   38   39   38   39   41   36   37   40    37
  15E |    8   11   10    9    6   11    6   12    5    3 |    99   98   98   98   99  100   98  101  100    97
  16  |    7    7    8    9    5    8    8    9    6    3 |    15   14   15   15   14   15   17   15   19    13
  17E |    7   10    7   15    4   11    6    8    7    3 |    34   39   36   32   37   38   38   38   40    36
  18  |   11    9   14    8    6   50    7   10    7    3 |    32   39   37   37   37   38   38   35   41    36
  19E |   12    8   11   12    5   10    7   13   11    4 |    33   27   31   33   27   26   31   27   29    29
  20  |    7    6   12    7    4   11    5   12    6    3 |    22   20   21   23   21   23   21   26   27    21
  21  |    7    8    9    7    4   12    5   10    5    3 |    23   24   27   21   24   24   20   26   27    22
 X22E |    5  ---   13   11    6   11    6   15  ---    5 |    32  ---   37   31   30   30   32   31  ---    31
  23  |   10    9   11    7    4   55    6   13    6    3 |    33   37   39   38   36   40   37   38   37    36
  24  |    8    9    7    6    3    9    5    8    8    3 |    24   25   23   24   24   29   24   23   32    23
  25  |    4   10    9    8    3   10    6    9    5    3 |    19   21   19   22   20   27   20   18   23    18
  26  |    6   11    8    7    4   10    7   10    5    3 |    19   21   19   19   19   25   17   17   21    17
  27E |    6    9   13    7    4   12    6   11    5    3 |    30   30   28   29   30   29   30   32   35    29
 X28  |    8    9  ---   11   12  ---    6  ---  ---    5 |    85   88  ---   87   88  ---   86  ---  ---    87
  29E |   15    8   11   14    7   12    8   12    8    4 |    37   34   36   37   35   33   37   37   37    35
  30  |    7   10    7    7    4   10    6   12    6    3 |    40   40   40   37   40   42   39   37   38    38
  31  |    5    7    7    7    3   11    6   13    5    3 |    47   42   43   43   44   50   42   47   46    43
  32E |    8    9   11   10    7   12    6   10    7    3 |    25   25   28   24   26   29   24   27   28    23
------+---------------------------------------------------+----------------------------------------------------
 RMS  |    8   10   11    9    5   23    6   11    7      |T   35   35   33   34   34   35   34   34   36    34
 WRMS |    8   10   11    8    5   23    6   10    7      |NE  31   31   29   31   31   31   31   29   31    30
 MEDI |    7    9   10    8    4   11    6   11    7      |MD  31   30   29   30   30   30   31   31   32    29

Table 3.2248.2   GPS week: 2248   Day: 2   MJD: 59982.000                            

        Weighted Average                                       Orbit Dynamics (7 days)
 PRN  |  cod  esa  gfz  grg  igr  jpl  mit  ngs  sio  IGS |   cod  esa  gfz  grg  igr  jpl  mit  ngs  sio   IGS
------+---------------------------------------------------+----------------------------------------------------
   1  |    7   10    7    6    2   14    6   10   10    3 |    30   32   32   29   29   30   29   28   42    30
   2  |    8    7    9   10    3   10    5   11   10    3 |    37   35   37   34   34   36   34   36   45    35
   3  |    8   11   10    9    6   11    8   12   11    4 |    38   37   35   34   36   36   32   38   43    35
   4E |    9   24   12   10    5   51    8   16    6    6 |    24   38   24   29   28   36   28   29   39    27
   5  |    6    6    7    7    5    9    7    8    8    3 |    38   35   36   34   36   38   32   35   47    35
   6  |    5    8    6    6    4   11    4    7   11    2 |    27   27   26   27   27   29   26   28   42    27
   7  |    6    7    7    9    3   10    6    8    9    3 |    32   32   35   31   33   36   34   29   42    32
   8E |    6    9    8   10    4   15    5   10   10    3 |    35   36   37   35   35   35   36   36   44    35
   9E |    8    8   10    8    5   11    6   13    8    4 |    29   29   26   27   30   29   29   33   41    28
  10  |    5    8    6    5    3    9    7    8    9    3 |    29   28   28   28   27   30   22   30   33    27
  11  |    7    8   12    8    5   59    6   13    9    4 |    26   28   25   29   26   34   29   27   40    27
  12  |    5    6    7    5    4    9    6    6    8    2 |    47   47   46   45   45   49   47   48   55    46
  13E |    6    6    5   11    5    9    8   10   11    3 |    43   41   43   45   43   43   44   41   55    42
  14  |    9    5    6   11    5   48   10    9   16    3 |    33   32   35   35   33   36   37   35   47    34
  15E |    9   12    7   10   10    9    9   12   20    4 |    89   88   86   87   89   89   87   90   89    88
  16  |    5    5    6   10    4    8    6   12   10    3 |    21   22   24   24   22   23   22   23   34    22
  17E |    8    8    6   15    5   13    5    7   13    3 |    40   42   42   46   44   44   42   45   52    42
  18  |    7    8    8   10    5   52    7   11    9    3 |    36   37   38   39   37   44   38   36   45    37
  19E |    6    9    7    9    7   12   11   10   17    4 |    38   33   37   38   35   33   33   38   41    35
  20  |    7    5    9    9    6   15    5   12    9    3 |    26   25   27   24   26   28   25   25   41    25
  21  |    7    6    7    8    3   11    6   13   11    3 |    30   28   31   27   29   31   28   33   44    29
 X22E |    5  ---    8   10    5   10    7    9  ---    3 |    25  ---   26   28   24   27   26   28  ---    26
  23  |    8    9    9    7    4   57    7   10    9    3 |    25   26   28   29   27   38   29   27   38    26
  24  |    4    8    7    7    3   10    5    7   11    3 |    25   25   23   24   24   31   22   25   37    23
  25  |    4   10    7    5    4   12    5    9    8    3 |    24   27   24   24   24   32   24   25   38    24
  26  |    5   10    6    9    4   11    7   12    9    3 |    32   34   33   33   32   37   30   31   42    31
  27E |    5    7    8    8    5   15    6   13    9    3 |    32   31   34   32   31   32   31   30   40    31
 X28  |    7    6  ---   11    6  ---    6   13  ---    4 |    82   84  ---   84   84  ---   85   49  ---    83
  29E |   11   10    7   10    7   12    7   11   13    4 |    39   36   37   39   36   36   36   39   43    37
  30  |    6    9    7    6    3    8    5    6    9    3 |    35   36   34   35   35   38   36   38   43    35
  31  |    7    6    5    8    4   11    9   11    9    3 |    48   50   51   47   50   53   49   53   57    49
  32E |    8    8    8    8    6   11    8   12   13    4 |    33   33   34   31   34   36   30   37   37    32
------+---------------------------------------------------+----------------------------------------------------
 RMS  |    7    9    8    9    5   24    7   11   11      |T   35   36   34   36   35   37   35   35   44    35
 WRMS |    6    8    8    9    5   24    7    9   10      |NE  34   34   32   34   34   35   33   33   42    33
 MEDI |    7    8    7    9    5   11    6   10    9      |MD  32   33   34   32   33   36   31   33   42    32

Table 3.2248.3   GPS week: 2248   Day: 3   MJD: 59983.000                            

        Weighted Average                                       Orbit Dynamics (7 days)
 PRN  |  cod  esa  gfz  grg  igr  jpl  mit  ngs  sio  IGS |   cod  esa  gfz  grg  igr  jpl  mit  ngs  sio   IGS
------+---------------------------------------------------+----------------------------------------------------
   1  |    7    9   10    8    4   14   11    8   13    4 |    26   30   25   28   27   30   30   28   49    27
   2  |    7    6   10   10    4    9    8    6   13    3 |    33   32   34   30   31   31   36   30   55    32
   3  |    6    9   12    7    4   10    8    9   12    4 |    27   29   30   27   27   29   26   26   49    27
   4E |    9   20   12   10    5   52   11   14   10    6 |    24   37   31   28   28   34   27   23   52    27
   5  |    7    7   11    9    4    9    7    6   13    3 |    40   37   43   37   40   42   35   39   61    38
   6  |    6    7    9    6    4   10    5   10   13    3 |    29   28   27   27   27   28   28   28   58    27
   7  |    5    6    8    8    3   10    4    9   12    3 |    40   39   39   34   36   41   38   39   54    38
   8E |    7    8    6   10    4   15    8   11   12    4 |    34   36   32   33   34   35   35   36   55    34
   9E |    7    6   13    9    4   11    6   13   10    4 |    28   26   31   26   27   25   25   28   49    26
  10  |    6    8    7    5    3   10   10    6   15    3 |    27   27   27   25   26   29   22   26   50    25
  11  |    6    7   11    8    5   58    5   10   13    3 |    28   28   28   32   28   36   31   29   59    29
  12  |    6    7    8    6    4    9    6    7   13    3 |    48   45   45   44   46   48   45   50   63    46
  13E |   10    7    7   11    4    8    9   19   12    5 |    30   28   25   29   27   32   28   33   55    27
  14  |    9    5    7    9    5   49   10   10   15    4 |    17   18   20   22   18   28   27   17   51    19
  15E |    7   10   12    8    8   10   10    9   23    4 |    53   58   59   55   57   57   52   53   59    54
  16  |    8    6    9    7    3   11    6    7    9    3 |    21   21   19   20   20   22   21   22   46    20
  17E |    7   11    9   11    9   15   11    8   10    4 |    43   46   42   44   45   47   44   43   66    43
  18  |    7    6    9   10    4   54    9    8   13    3 |    29   31   30   31   29   39   35   30   53    30
  19E |    8    8   10    9    8   11    8   10   10    4 |    41   35   39   38   35   35   35   35   60    37
  20  |    7    4    8   10    5   11    6    9   15    3 |    24   24   25   24   25   28   24   26   55    24
  21  |    7    7    9   11    5   12    8    8   13    3 |    26   31   30   28   29   31   31   30   55    28
 X22E |    7  ---   13    9    5   11    6   12  ---    5 |    27  ---   33   28   29   29   28   27  ---    28
  23  |    9    9   10    7    4   58    8   12   14    4 |    20   28   24   26   24   44   29   27   57    25
  24  |    5    9    9    7    3   11    7    7   16    3 |    24   25   22   21   24   31   22   24   46    22
  25  |    4    8    9    8    4   10    4    8   13    3 |    23   25   22   21   23   30   22   26   46    22
  26  |    5    9    8    8    2   11    6    8   11    3 |    27   29   24   27   25   32   25   25   47    25
  27E |    6    7   10    7    4   15    6   11   11    3 |    29   29   25   29   28   30   29   29   52    28
 X28  |   11    6  ---   11    6  ---    8   13  ---    5 |    37   32  ---   35   35  ---   34   32  ---    34
  29E |   11    9    9   13    8   11   10   14   14    5 |    31   30   32   28   34   30   30   33   50    29
  30  |    7    8    9    7    5    7    7    8   12    3 |    22   22   22   24   22   27   21   19   47    21
  31  |    4    6    7    8    3   10    7    8   14    3 |    38   41   40   34   38   42   38   42   52    38
  32E |    8    7   10   10    6   12   11    8   21    4 |    27   25   26   25   26   25   24   25   49    24
------+---------------------------------------------------+----------------------------------------------------
 RMS  |    7    8    9    9    5   24    8   10   14      |T   30   31   30   30   30   33   30   30   53    29
 WRMS |    7    8    9    8    5   24    8    8   13      |NE  28   29   28   28   28   33   29   29   52    28
 MEDI |    7    7    9    8    4   11    8    9   13      |MD  28   29   30   28   28   31   29   28   52    27

Table 3.2248.4   GPS week: 2248   Day: 4   MJD: 59984.000                            

        Weighted Average                                       Orbit Dynamics (7 days)
 PRN  |  cod  esa  gfz  grg  igr  jpl  mit  ngs  sio  IGS |   cod  esa  gfz  grg  igr  jpl  mit  ngs  sio   IGS
------+---------------------------------------------------+----------------------------------------------------
   1  |    6   11    6    6    3   12    9   11   11    3 |    27   28   25   26   26   27   27   25   46    25
   2  |    4    7    9   10    4    8    7    9    9    3 |    32   31   33   28   30   33   30   31   55    30
   3  |    6   12    8    7    4   12    9   10   10    4 |    32   34   31   31   30   34   34   33   54    32
   4E |    6   23    9    9    7   51    9   14    8    5 |    25   36   26   28   28   34   25   25   50    26
   5  |    6    7   12    8    4    8    7   10    8    3 |    33   30   37   30   33   36   31   35   53    32
   6  |    5    8    9    6    5   10    6    9   11    3 |    25   24   24   24   24   26   23   25   54    24
   7  |    6    7    9    7    3    9    5    9    9    3 |    39   41   42   35   39   42   40   41   55    39
   8E |    5   11    4   10    5   15   11   11   10    4 |    32   34   30   34   33   34   31   34   58    32
   9E |    9    7   12    9    3   11    7   14    8    4 |    23   23   24   23   22   23   21   28   48    21
  10  |    4   10   12    8    3   10   13    7    5    4 |    25   28   29   27   26   28   22   27   50    25
  11  |    6    8   10    9    6   56    4    9   11    3 |    23   25   24   26   22   27   25   22   57    23
  12  |    5    6    6    8    4    7    7   11    7    3 |    40   38   41   32   39   41   40   40   55    38
  13E |    5    9   10    8    4    9   11   18   12    4 |    26   26   30   29   27   30   28   35   55    27
  14  |    7    6    7    8    5   46   12   10   14    3 |    33   34   36   37   35   40   37   30   60    33
  15E |    5    9   16    7    5   10   10   14   11    4 |    92   90   93   89   91   90   90   92   98    90
  16  |    4    6    6    8    3   12    8    9   10    3 |    21   22   22   22   22   25   21   27   49    21
  17E |    6   13   10    7    6   12   12    9   11    4 |    32   37   31   34   35   37   34   35   59    33
  18  |    8    8   13   11    4   55    8   11    9    4 |    22   24   28   25   22   29   25   21   55    23
  19E |    9    9    8    9    8   11   16   13   13    5 |    40   35   38   37   36   36   40   35   63    37
  20  |    6    5    6    8    5    8    8   12   13    3 |    26   28   28   26   27   30   27   34   51    27
  21  |    5    8    7    9    3   12    9   13    8    3 |    20   23   23   21   23   24   23   26   46    21
 X22E |    5  ---   10   10    4    9    8   13  ---    4 |    21  ---   26   24   20   21   22   23  ---    21
  23  |    7   10   12    8    4   60   10    9    7    4 |    30   31   30   32   29   45   33   29   58    30
  24  |    6    9    6    9    3    8    8    9    7    3 |    21   21   19   18   18   26   19   22   43    19
  25  |    4    8    7    8    4   11    7    7    7    3 |    18   20   16   15   17   26   19   18   47    17
  26  |    6    9    7    7    3   13    9    9   11    3 |    21   23   20   19   21   28   21   25   48    20
  27E |    4    9    9    6    4   16    9   14    7    3 |    28   28   26   28   28   29   28   29   55    27
 X28  |    8    6  ---   11    6  ---    8   13  ---    4 |    79   77  ---   79   79  ---   77   26  ---    78
  29E |   10   10   13   12    8   11   11   11   16    5 |    38   37   35   37   37   37   37   43   65    37
  30  |    5    9    8    5    3    8    6   10   10    3 |    37   36   37   36   36   40   35   34   59    35
  31  |    4    7    6    9    3   10    8    9   10    3 |    47   48   48   44   46   50   46   46   61    46
  32E |    6   10    8   11    5   10   11    9   14    4 |    22   21   22   24   21   23   20   21   49    20
------+---------------------------------------------------+----------------------------------------------------
 RMS  |    6   10    9    8    5   24    9   11   10      |T   32   33   31   31   31   33   32   31   55    31
 WRMS |    6   10   10    8    4   24    9   10   10      |NE  31   31   29   30   30   32   31   29   52    30
 MEDI |    6    9    9    8    4   11    8   10   10      |MD  27   30   29   28   28   30   28   29   55    27

Table 3.2248.5   GPS week: 2248   Day: 5   MJD: 59985.000                            

        Weighted Average                                       Orbit Dynamics (7 days)
 PRN  |  cod  esa  gfz  grg  igr  jpl  mit  ngs  sio  IGS |   cod  esa  gfz  grg  igr  jpl  mit  ngs  sio   IGS
------+---------------------------------------------------+----------------------------------------------------
   1  |    7    8    4    6    4   13    8    9   15    3 |    31   35   33   34   34   36   35   33   58    33
   2  |    5    6   11    9    4    9   10    7    6    3 |    32   32   35   30   32   33   36   32   63    32
   3  |    5   10    9    7    3   13    9    7   14    3 |    38   40   36   41   38   38   38   38   63    39
   4E |    7   24   13    9    6   52    8   11   12    6 |    24   36   22   29   27   33   25   25   52    26
   5  |    6    5   12    7    4    8    9    9   10    3 |    39   38   43   38   40   39   40   41   70    40
   6  |    5    8    9    4    4   10    7   10   13    3 |    28   28   29   26   27   25   29   30   58    28
   7  |    5    6    8    6    4    8    6   10   10    3 |    45   42   45   44   44   47   43   44   68    43
   8E |    6    9    6   11    6   16   16   10   13    4 |    40   42   41   39   41   43   42   44   66    40
   9E |    5    7   25   12    4   10    6   13   10    5 |    30   29   35   31   30   31   28   34   52    29
  10  |    6    9   10    6    4   10   12    3   12    3 |    31   32   34   31   31   32   30   31   56    31
  11  |    7    6   10    9    5   59    6    8    6    3 |    29   28   31   29   31   29   30   29   61    29
  12  |    6    8    7    5    3    9    8    8    8    3 |    34   34   35   31   33   35   34   34   61    33
  13E |    9    8    8   12    5   10    9   17   18    5 |    25   24   26   24   25   27   26   29   61    24
  14  |    6    5    8    9    4   48    7   10   17    3 |    36   36   36   37   35   40   41   37   58    37
  15E |    7    7   11   10    3    8    7    7    8    3 |    82   82   87   85   84   85   86   85   94    84
  16  |    7    5   10    5    3    9    7   12    9    3 |    21   23   25   23   24   22   21   27   61    22
  17E |    5   10   12    6    5   11   10    5   13    3 |    34   38   33   34   36   36   36   35   61    34
  18  |    8    7   10    9    4   54    8   11   13    4 |    28   28   30   27   28   28   32   27   56    27
  19E |    9    9   11   15    6   11   10   14   16    5 |    32   28   29   33   29   28   30   34   57    30
  20  |    6    4    6    6    4    7    7    9    9    3 |    31   33   32   32   33   32   31   35   64    32
  21  |    8    6    8    7    4   11   10    9   12    3 |    31   30   33   29   32   35   32   36   61    31
 X22E |    4  ---   11   10    5   11    8    9  ---    4 |    30  ---   32   31   31   31   34   33  ---    31
  23  |    7    8   11    6    4   61   11   10   10    4 |    34   32   34   34   33   43   37   34   54    33
  24  |    5    9    7    5    4   10   11    9   12    3 |    21   24   23   20   23   27   22   24   61    21
  25  |    5    9    9    6    3   12    6    8    8    3 |    16   22   16   21   18   26   20   20   54    18
  26  |    5    8    8    6    3   12    8   11    7    3 |    31   33   30   30   32   35   28   30   64    29
  27E |    6    9   14   11    5   18    8   15   10    4 |    31   32   32   33   32   33   32   33   60    31
 X28  |    9    6  ---    8    8  ---    9   13  ---    4 |    86   89  ---   88   87  ---   85   36  ---    86
  29E |   11    9    8   12    8   11    8   17   11    5 |    53   48   48   54   49   49   46   48   68    49
  30  |    6    9   10    6    3    9    9    7   10    3 |    33   34   30   34   31   35   36   34   54    33
  31  |    5    7    7    6    5   11    8    8   10    3 |    43   43   44   39   43   47   41   44   68    42
  32E |    5    9   15    7    6   12   14    7   14    4 |    31   30   40   32   33   32   28   31   52    30
------+---------------------------------------------------+----------------------------------------------------
 RMS  |    6    9   11    8    4   24    9   10   12      |T   35   36   34   35   35   35   36   35   61    35
 WRMS |    6    9   10    7    4   25    8    8   11      |NE  34   35   32   34   34   34   35   33   60    34
 MEDI |    6    8   10    7    4   11    8    9   10      |MD  31   33   33   32   32   33   32   34   61    31

Table 3.2248.6   GPS week: 2248   Day: 6   MJD: 59986.000                            

        Weighted Average                                       Orbit Dynamics (7 days)
 PRN  |  cod  esa  gfz  grg  igr  jpl  mit  ngs  sio  IGS |   cod  esa  gfz  grg  igr  jpl  mit  ngs  sio   IGS
------+---------------------------------------------------+----------------------------------------------------
   1  |    6    9    5    6    5   13    8    8    9    3 |    28   30   29   29   28   28   29   25   67    28
   2  |    5    6   13   10    4   10    6    8    8    3 |    31   29   34   29   30   29   31   30   68    30
   3  |    6   10    7    7    3   12   10    6   13    3 |    32   34   33   35   33   33   33   33   70    33
   4E |    9   23   10   10    7   49   16   12    7    6 |    32   43   37   35   36   38   40   33   68    36
   5  |    7    8    9    7    4    7    9   12    9    4 |    38   37   40   35   38   39   33   35   67    36
   6  |    7    8    6    6    3   10    5    7   11    3 |    25   25   27   25   24   24   24   24   67    24
   7  |    5    7    7    9    4    9    6   11    8    3 |    65   63   66   61   64   66   64   62   91    63
   8  |    5    9    7   16    5   14   14   11   10    5 |    53   55   54   53   54   53   55   54   90    53
   9E |    8    7   23   12    7   10    7   14   11    5 |    45   45   50   45   45   45   44   45   75    45
  10  |    4    8   10    5    5   11    8    6    8    3 |    24   27   26   24   26   28   23   27   59    24
  11  |    7    7    6    8    5   54    6   10    7    3 |    42   43   43   46   41   45   44   42   77    43
  12  |    7    8    7    7    5    9    8   10    6    3 |    50   49   49   42   46   49   47   45   69    47
  13E |    6    8   10   11    5   11    8   13   10    4 |    22   20   26   19   23   22   23   27   70    21
  14  |   10    6    5    9    4   50    7   11   14    3 |    39   41   42   44   42   54   43   45   67    41
  15E |    8    6   12   10    5   11    8    9   10    4 |   107  104  106  104  105  107  103  104  118   104
  16  |    6    4    8    5    4    7    6   11    9    3 |    22   23   24   23   24   23   21   27   64    22
  17E |    6    9    8    8    6   11    7    8    7    3 |    44   51   47   48   50   48   46   47   75    47
  18  |    7    8   12    9    4   55    8   11    7    4 |    43   46   48   47   46   47   50   48   79    46
  19E |    8    8    6   10    7   10    8    8   10    3 |    48   43   47   50   43   44   46   43   73    46
  20  |    7    6    8    8    4   10    8   10    8    3 |    27   28   30   28   29   29   29   29   69    28
  21  |    5    7    8    6    3    9    9   11    9    3 |    27   26   29   26   27   28   27   26   66    26
 X22E |    5  ---   12    9    5    9    7    9  ---    4 |    23  ---   24   23   24   26   26   26  ---    23
  23  |    6    8   11    6    5   56    8    9    5    3 |    44   46   45   46   43   64   48   47   68    45
  24  |    7    8    8    7    4    8    4   14    8    3 |    22   21   23   20   21   25   22   24   63    21
  25  |    5    9   10    6    4   11    5    9    7    3 |    20   25   26   22   22   27   22   20   64    22
  26  |    6    8    8    5    4   11    6   11    9    3 |    33   34   32   33   33   37   29   32   73    32
  27E |    6    8    8   12    6   14    9   12   12    4 |    35   34   36   37   36   33   37   35   69    35
 X28  |    8    5  ---   10    7  ---    8   16  ---    4 |   124  125  ---  126  126  ---  125   56  ---   125
  29E |   11    9   10   11    6   10    6   16    9    4 |    75   74   73   79   74   72   73   74   92    75
  30  |    7    8    7    8    4   11    7   13    9    3 |    40   42   39   38   40   43   41   41   68    40
  31  |    5    7    9    7    3    9    7   12    8    3 |    66   65   66   59   64   66   63   65   93    64
  32E |    8    8   26   12    6   12    9   10   11    6 |    37   39   34   40   37   35   35   38   65    36
------+---------------------------------------------------+----------------------------------------------------
 RMS  |    7    9   10    9    5   23    8   11    9      |T   42   44   41   42   42   42   43   40   73    42
 WRMS |    6    9    9    8    5   23    7    9    8      |NE  40   40   37   39   40   39   40   37   70    40
 MEDI |    6    8    8    8    5   11    8   11    9      |MD  37   41   37   37   37   38   37   35   69    36



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 4.2248   GPS week: 2248   MJD: 59980.0-59986.0

CENT| CLK EPO  |        BRUX       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3072 |U    8     9    20 |U   15    19    52 |U    9    11    21 |
esa | esa 2976 |    16    16    34 |U   15    15    74 |U   11    12    32 |
gfz | gfz 2974 |U    8     8    17 |U   13    16    44 |     9    10    22 |
grg | grg 3070 |U   10    14    23 |U   14    14    48 |    10    13    24 |
igr | igr 3044 |     9     9    17 |    14    16    53 |     8     9    21 |
igs | igs 3072 |     9     9    17 |    14    16    49 |     8    10    22 |
jpl | jpl 2976 |    19    18    30 |U   18    18    65 |    14    16    35 |
mit | mit 3072 |U  182   100   191 |U   35    30    82 |U   35    48   530 |



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 5.2248.0   GPS week: 2248   Day: 0   MJD: 59980.0

CENT| CLK EPO  |        BRUX       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3072 |     9     7    16 |    23    27    64 |     9    11    16 |
esa | esa 2976 |    18    15    29 |    20    18    74 |    11    15    22 |
gfz | gfz 2976 |     8     6    12 |    20    20    50 |     8    11    17 |
grg | grg 3068 |    15    14    30 |    18    18    58 |     9    13    16 |
igr | igr 2976 |    11     7    16 |    20    20    58 |     8    10    15 |
igs | igs 3072 |    10     8    14 |    19    21    55 |     8    11    15 |
jpl | jpl 2976 |    19    16    26 |    25    26    62 |    14    18    28 |
mit | mit 3072 |    15    19    32 |    19    21    55 |     9    26    43 |

Table 5.2248.1   GPS week: 2248   Day: 1   MJD: 59981.0

CENT| CLK EPO  |        BRUX       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3072 |    10     7    16 |  ----  ----  ---- |     9    10    18 |
esa | esa 2976 |    19    15    37 |  ----  ----  ---- |    13    11    32 |
gfz | gfz 2976 |     9     8    18 |  ----  ----  ---- |    10    10    22 |
grg | grg 3072 |    11    15    23 |  ----  ----  ---- |    10    15    26 |
igr | igr 2976 |    12     9    19 |  ----  ----  ---- |     9     7    22 |
igs | igs 3072 |    10     9    18 |  ----  ----  ---- |     9     9    22 |
jpl | jpl 2976 |    21    17    31 |  ----  ----  ---- |    16    16    36 |
mit | mit 3072 |  1170   577  1078 |  ----  ----  ---- |   155   199  3260 |

Table 5.2248.2   GPS week: 2248   Day: 2   MJD: 59982.0

CENT| CLK EPO  |        BRUX       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3072 |     8     7    18 |    19    15    49 |     9     9    16 |
esa | esa 2976 |    18    18    31 |    22    15    83 |    11    11    24 |
gfz | gfz 2976 |     8     8    14 |    17    13    44 |     9    10    19 |
grg | grg 3072 |    10    10    17 |    18    14    58 |     9    11    22 |
igr | igr 3072 |    10     9    14 |    18    13    51 |     8     8    17 |
igs | igs 3072 |     9     8    14 |    18    14    50 |     8     9    16 |
jpl | jpl 2976 |    20    20    24 |    23    14    64 |    14    16    31 |
mit | mit 3072 |    14    18    47 |    19    16    67 |     9    18    31 |

Table 5.2248.3   GPS week: 2248   Day: 3   MJD: 59983.0

CENT| CLK EPO  |        BRUX       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3072 |     7     6    23 |    14    19    49 |    10    11    21 |
esa | esa 2976 |    16    15    35 |    15    16    74 |    12    11    35 |
gfz | gfz 2970 |     7     5    17 |    13    14    42 |     9    11    23 |
grg | grg 3068 |     8     9    19 |    12    15    49 |    11    14    27 |
igr | igr 3072 |     8     6    18 |    14    15    51 |     9    10    23 |
igs | igs 3072 |     8     6    17 |    13    15    48 |    10    11    24 |
jpl | jpl 2976 |    19    17    31 |    18    16    69 |    15    15    41 |
mit | mit 3072 |    29    31    62 |    42    19    69 |    16    22    35 |

Table 5.2248.4   GPS week: 2248   Day: 4   MJD: 59984.0

CENT| CLK EPO  |        BRUX       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3072 |     9    12    21 |    12    17    49 |     9    11    20 |
esa | esa 2976 |    15    18    30 |    13    15    71 |    11    11    32 |
gfz | gfz 2974 |     7    10    16 |    13    18    40 |     7     7    18 |
grg | grg 3070 |     9    15    25 |    12    12    42 |     8    10    23 |
igr | igr 3072 |     9    11    15 |    12    16    47 |     7     8    18 |
igs | igs 3072 |     8    12    18 |    12    14    46 |     7     9    19 |
jpl | jpl 2976 |    19    20    30 |    14    17    62 |    12    15    32 |
mit | mit 3072 |    20    25    49 |    68    72    98 |    28    31   259 |

Table 5.2248.5   GPS week: 2248   Day: 5   MJD: 59985.0

CENT| CLK EPO  |        BRUX       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3072 |     8    10    24 |     9    23    58 |     9    13    25 |
esa | esa 2976 |    14    15    37 |    11    18    80 |    10    11    36 |
gfz | gfz 2976 |     8     8    22 |     9    20    53 |     9    11    26 |
grg | grg 3072 |     9    16    24 |    12    16    48 |    10    14    25 |
igr | igr 3072 |     9    10    20 |    10    21    65 |     7    10    24 |
igs | igs 3072 |     8    10    21 |    10    19    55 |     8    11    25 |
jpl | jpl 2976 |    18    16    35 |    12    21    74 |    14    17    37 |
mit | mit 3072 |    15    20    30 |    51    27   146 |    16    19    41 |

Table 5.2248.6   GPS week: 2248   Day: 6   MJD: 59986.0

CENT| CLK EPO  |        BRUX       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3072 |     8    12    21 |    10    15    43 |     9    13    30 |
esa | esa 2976 |    15    16    38 |    12    10    64 |    12    12    44 |
gfz | gfz 2976 |     8    10    20 |     9    11    38 |     9    12    31 |
grg | grg 3072 |     9    17    24 |    10    12    35 |    10    13    33 |
igr | igr 3072 |     9    10    19 |    10    12    45 |     8    11    30 |
igs | igs 3072 |     8    11    20 |    10    12    42 |     8    11    32 |
jpl | jpl 2976 |    19    17    34 |    13    12    56 |    12    16    43 |
mit | mit 3072 |    14    15    40 |    12    24    59 |    13    19    41 |


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 6.2248   GPS week: 2248   MJD: 59980.500-59986.500

                                                         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 |       9     -11     -20      -1      2 |       3     27
            |      13      17      66      27      3 |       4
esa   uuuuu |      -4     -18     -10     -34      0 |       9     29
            |       8      11      40      34      2 |       4
gfz   uuuuu |     -13     -17     -29      -6      1 |       4     27
            |      13       7      78     126      4 |       4
grg   uuuuu |      26       1     -60     267     -4 |      11     28
            |      12       9      50      87      3 |       4
igr   xxxxx |     -20       2     -51     -53      5 |      -6     27
            |      17      12      69      57      7 |       3
irf   xxxxx |       0      -2     -19     -15     -2 |      -1     27
            |      13       6      34      18      6 |       4
jpl   xxxxx |       3      13     -21      34     -5 |      12     30
            |      30      18      50      45      8 |       3
mit   uuuuu |     -26      12     117    -190     -5 |      20     33
            |      27      17      35      19      3 |       4
ngs   uuuuu |      17      38     -24      16      4 |       9     27
            |      36      34     114     154      4 |       4
sio   xxxxx |      84      -6    -390      37     -4 |      45     53
            |      46      22      79      46      5 |       4


Table 7.2248.0   GPS week: 2248   Day: 0   MJD: 59980.500

                                                         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 |      13      -6     -21       6      2 |      -3     33
esa   uuuuu |      -5     -34      21      -1      1 |       4     33
gfz   uuuuu |      -7     -18    -178    -194      6 |      -2     32
grg   uuuuu |      20      -4    -125     272     -7 |      12     30
igr   xxxxx |      -8     -11     -59      -6      1 |     -12     35
irf   xxxxx |      -8      -7     -60     -15      1 |      -5     34
jpl   xxxxx |       6      -6     -82      83     -5 |       9     34
mit   uuuuu |     -48      19      88    -184     -5 |      16     36
ngs   uuuuu |      75      33     174     220      2 |       2     30
sio   xxxxx |      59     -17    -333     -29     -3 |      39     55

Table 7.2248.1   GPS week: 2248   Day: 1   MJD: 59981.500

                                                         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     -29      18     -21      5 |       7     30
esa   uuuuu |      -9     -10     -57     -80     -1 |      13     32
gfz   uuuuu |     -21     -14      17      25      4 |       9     30
grg   uuuuu |      22       3     -74     318     -4 |      16     33
igr   xxxxx |      -9      17     -87       5     -3 |      -2     29
irf   xxxxx |      -6       1     -53      -7    -10 |       6     29
jpl   xxxxx |      -6      17      22      64     -9 |      18     34
mit   uuuuu |     -29      32     113    -169     -8 |      26     38
ngs   uuuuu |      23      -2    -121      34      0 |      12     30
sio   xxxxx |      64       0    -295      61    -10 |      50     59

Table 7.2248.2   GPS week: 2248   Day: 2   MJD: 59982.500

                                                         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 |      -5     -32      44      19      4 |       4     27
esa   uuuuu |      -2     -30     -12     -57      1 |      10     30
gfz   uuuuu |     -20     -15     -16     -29     -2 |       6     28
grg   uuuuu |      39      14    -122     353     -6 |      15     31
igr   xxxxx |     -19      13    -105     -24      3 |      -6     28
irf   xxxxx |      -3       1     -49      -3     -6 |       2     28
jpl   xxxxx |      11      -1      29      36      2 |      13     30
mit   uuuuu |     -22       4      93    -217     -8 |      22     35
ngs   uuuuu |      33      95     -61      48      6 |       9     28
sio   xxxxx |     123     -24    -440     -28     -6 |      46     55

Table 7.2248.3   GPS week: 2248   Day: 3   MJD: 59983.500

                                                         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 |      -9       3      33      46      4 |       7     26
esa   uuuuu |      13      -7     -54     -10      4 |      13     29
gfz   uuuuu |     -15     -29       8    -153     -4 |       8     27
grg   uuuuu |      15      -6     -41     146      0 |      14     29
igr   xxxxx |      -2     -13     -10    -126     11 |      -4     26
irf   xxxxx |      27      -7      -7     -13     -8 |       4     26
jpl   xxxxx |      37      15     -53      64     10 |      15     30
mit   uuuuu |      24     -17      74    -173     -6 |      24     34
ngs   uuuuu |     -40      69     -43     169      0 |      13     27
sio   xxxxx |     127     -40    -470      63      6 |      50     56

Table 7.2248.4   GPS week: 2248   Day: 4   MJD: 59984.500

                                                         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 |       6     -23    -148     -23      1 |       2     24
esa   uuuuu |      -8      -4       3     -51      1 |       7     26
gfz   uuuuu |     -26      -5      67      69      1 |       2     25
grg   uuuuu |      17      -7     -24     222     -7 |       7     25
igr   xxxxx |     -14      -1      88    -106     12 |      -9     25
irf   xxxxx |       3       3      12     -19     -1 |      -4     25
jpl   xxxxx |      27      18     -45      24     -5 |      11     27
mit   uuuuu |     -12      26     148    -207     -7 |      17     29
ngs   uuuuu |      27      40      78      -8      9 |       7     23
sio   xxxxx |     115      12    -302      75     -5 |      44     50

Table 7.2248.5   GPS week: 2248   Day: 5   MJD: 59985.500

                                                         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 |      20      11     -52      -7      1 |       2     24
esa   uuuuu |      -6     -15     -26      11     -1 |       6     26
gfz   uuuuu |     -13     -20     -56     110     -3 |       2     25
grg   uuuuu |      25      -2       9     182     -3 |       7     25
igr   xxxxx |     -43       8    -103      -8     15 |      -8     25
irf   xxxxx |      -3     -10      18       3      5 |      -5     25
jpl   xxxxx |      -2       2     -60      19    -11 |      10     27
mit   uuuuu |     -34      18     171    -177     -3 |      15     29
ngs   uuuuu |     -11       4     -38    -147      6 |       7     24
sio   xxxxx |     101      19    -409      75     -6 |      43     49

Table 7.2248.6   GPS week: 2248   Day: 6   MJD: 59986.500

                                                         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 |       8       0     -11     -27     -5 |       4     24
esa   uuuuu |     -10     -22      53     -49     -3 |       8     26
gfz   uuuuu |      14     -18     -48     128      2 |       3     26
grg   uuuuu |      45      12     -44     375      1 |       8     25
igr   xxxxx |     -44       1     -78    -106     -1 |      -4     24
irf   xxxxx |     -11       3       7     -54      4 |      -2     25
jpl   xxxxx |     -55      48      40     -52    -15 |      11     27
mit   uuuuu |     -58       4     133    -201     -1 |      16     29
ngs   uuuuu |      14      30    -157    -203      6 |      10     25
sio   xxxxx |       0       8    -479      42     -2 |      45     51


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