[IGSREPORT-27280] Wk 2105 IGS Final Orbits

acc acc at igs.org
Thu May 28 23:02:26 PDT 2020


Author:  AC Coordinator / GA MIT 

sum-file Version 2.0
Final IGS Orbit Combination - Week 2105   (May 10, 2020 - May 16, 2020)

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:

igs2105[0-6].sp3  IGS GPS ephemeris files in SP3 format.
igs2105[0-6].clk  IGS GPS satellite and station clocks in clock RINEX format.
igs2105[0-6].cls  IGS GPS clock combination summary report.
igs21057.erp      Earth Rotation Parameters (ERP) and their rates as well as
                  Universal Time (UT1-UTC) and Length Of Day (LOD) associated 
                  with IGS ephemerides.
igs21057.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   | DAV1 TIXI TIXI
                0  |  EMR   | LPGS
                0  |  ESA   | DAV1 PTBB REUN PTBB REUN
                0  |  GFZ   | 4 18 4 13 18 ZECK BJNM ZECK
                0  |  GRG   | BAKE DARW BAKE
                0  |  MIT   | DUBO DUBO
                1  |  COD   | LHAZ TIXI TIXI
                1  |  EMR   | YELL
                1  |  ESA   | CPVG PTBB URUM CPVG IQAL PTBB TLSE
                1  |  GFZ   | 4 18 4 18 BJNM IISC BJNM CCJ2 IISC TLSE
                1  |  GRG   | 13 CCJ2 DAEJ LHAZ XMIS CCJ2 DARW LHAZ SEYG
                1  |  JPL   | XMIS XMIS
                1  |  MIT   | DUBO WHIT BJNM DUBO GUAM WHIT
                2  |  COD   | CPVG IRKJ LHAZ TIXI ZECK CPVG IRKJ TIXI ZECK
                2  |  EMR   | BJNM SYOG BJNM SYOG
                2  |  ESA   | DJIG PTBB DJIG PTBB
                2  |  GFZ   | 4 18 4 18 FLRS LHAZ PDEL FLRS PDEL REUN YAR2
                2  |  GRG   | 1 6 21 1 6 21 BRST BRST
                2  |  JPL   | 21
                2  |  MIT   | BRST PDEL PETS
                3  |  COD   | GRAZ TIXI GRAZ TIXI
                3  |  EMR   | SYOG SYOG
                3  |  ESA   | PTBB PTBB
                3  |  GFZ   | 4 18 4 18 BJNM ZECK BJNM PIE1 ZECK
                3  |  GRG   | 21 CCJ2 PIE1 CCJ2 PIE1
                4  |  COD   | TIXI ZECK NRIL TIXI ZECK
                4  |  EMR   | BJNM BJNM
                4  |  ESA   | NNOR PTBB BRFT NNOR PTBB
                4  |  GFZ   | 4 4 SOFI VOIM
                4  |  GRG   | 7 13 7 13 DJIG HOB2 DJIG NNOR
                4  |  JPL   | NRIL
                4  |  MIT   | BADG ZECK BADG BJNM ZECK
                5  |  COD   | TIXI TIXI
                5  |  EMR   | SUTM LPGS SUTM
                5  |  ESA   | ANKR PTBB SOFI ANKR PTBB
                5  |  GFZ   | 4 4 BJNM FLRS BJNM FLRS SOFI
                5  |  GRG   | 21 18 21 CCJ2 CCJ2
                5  |  MIT   | BADG BADG BJNM
                6  |  COD   | BJNM CPVG MDVJ TIXI BJNM CPVG MDVJ TIXI
                6  |  EMR   | NIST
                6  |  ESA   | PTBB PTBB
                6  |  GFZ   | 4 18 4 18 BJNM DAV1 REUN BJNM DAV1 REUN
                6  |  GRG   | 11 NRIL TLSE NRIL TLSE
                6  |  JPL   | POLV POLV
                6  |  MIT   | DUBO DUBO

 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  |  GRG   |   1   6  21
                2  |  JPL   |   6
                4  |  COD   |  18
                4  |  GFZ   |  18
                5  |  GRG   |  18

 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 G01 |  4 |  4 |  4 |  4 |  4 |  4 |  4 |
           PRN G06 |  4 |  4 |  4 |  4 |  4 |  4 |  4 |
           PRN G18 |    |    |    |    |  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.
    
    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.

 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 |    -.2    -.0    1.1      16     25     11    -.17
       EMR  |   0 |   -1.0  -11.5    5.0     -45     26    -17     .37
       ESA  |   0 |     .5   -1.7    -.8     -14     56     78    -.04
       GFZ  |   0 |     .4     .1     .6      12     -3      0    -.03
       GRG  |   0 |   -1.3   -2.1     .7      57      3     53     .0 
       JPL  |   0 |     .4  -12.6    3.6      -3     -9     -2    -.01
       MIT  |   0 |   -1.5   -5.4    9.5      11     24     -5     .21
       NGS  |   0 |   -1.9   -8.9    7.1     -50     65     -6     .26
       SIO  |   0 |   -4.2   -9.2  -15.7      -8     27    -11    -.15

       COD  |   1 |    -.3    -.0    1.1      12     25     -1    -.24
       EMR  |   1 |    5.8  -10.6    2.6     -24     70    -22     .34
       ESA  |   1 |    -.1    -.9    -.9      -3     54     64    -.12
       GFZ  |   1 |     .2     .3    1.7      16     12     -9    -.22
       GRG  |   1 |    -.1   -2.6    8.3      62     16     60     .02
       JPL  |   1 |    3.2   -9.9    4.1       1      0      2    -.20
       MIT  |   1 |    -.8   -1.4    6.4      -3     26     -6     .12
       NGS  |   1 |    3.6  -10.1   10.9     -45      6     25     .04
       SIO  |   1 |   -3.9   -7.0  -16.5     -24      4      2    -.18

       COD  |   2 |    -.1    -.3    1.2      10     25     13    -.37
       EMR  |   2 |    5.3   -4.8   -2.9     -52     59     -5     .16
       ESA  |   2 |    1.1    -.7    -.0      -3     70     79    -.05
       GFZ  |   2 |     .4     .2    1.4      24     18      4    -.26
       GRG  |   2 |   10.0   -9.3  -10.1      66     25     57     .28
       JPL  |   2 |    7.4   -7.0    1.4      12      7      9    -.24
       MIT  |   2 |    1.0   -3.4    1.7      -5     28     -2     .09
       NGS  |   2 |    1.3    -.9    6.8      24     17     -1    -.0 
       SIO  |   2 |    -.9   -3.7  -22.6     -33     42    -29    -.17

       COD  |   3 |    -.5    -.1     .6       8     22      4    -.37
       EMR  |   3 |    5.7   -5.3     .8     -24     52    -26     .05
       ESA  |   3 |     .9   -1.9     .2      -4     50     70    -.10
       GFZ  |   3 |     .1     .7    1.3      26     19     -5    -.22
       GRG  |   3 |    2.0   -3.4  -13.3      50     16     81     .03
       JPL  |   3 |    7.7   -3.7    -.2      20      5    -14    -.20
       MIT  |   3 |     .2   -1.1    5.4      14     31    -12     .07
       NGS  |   3 |    1.2   -8.5   12.2     -31     33    -31     .07
       SIO  |   3 |    -.7   -6.9  -21.3     -12     15    -26    -.20

       COD  |   4 |    -.0     .4    1.0      18     31     -8    -.31
       EMR  |   4 |   12.7   13.4   -9.4     -30     37    -30     .18
       ESA  |   4 |     .7    -.6     .2      13     56     63     .07
       GFZ  |   4 |     .5     .9    1.2      26     15     -4    -.18
       GRG  |   4 |     .6     .3   -3.2      57     26     88    -.17
       JPL  |   4 |    6.3   -5.4    4.2      16      4    -14    -.35
       MIT  |   4 |   -3.2    2.1    6.4      15     30     -2     .13
       NGS  |   4 |    1.1   -8.1   11.7     -19     39    -35     .04
       SIO  |   4 |    -.6   -2.4   -4.0      -5      8      0    -.03

       COD  |   5 |     .2     .1    1.1      10     18      3    -.39
       EMR  |   5 |    2.5   -4.9   -3.5     -32     21    -15     .16
       ESA  |   5 |    -.6   -2.1     .5     -32     22     39    -.08
       GFZ  |   5 |     .9     .8    1.3      24     -2      0    -.22
       GRG  |   5 |   -2.4     .9    1.2     105     44     67     .11
       JPL  |   5 |    6.8   -9.1    1.6      18      6    -11    -.40
       MIT  |   5 |   -1.3    1.8    5.7      20     10      4     .08
       NGS  |   5 |    -.2   -7.6   13.1      -9     38     16     .16
       SIO  |   5 |    -.4   -2.9    -.4     -16     -1      0    -.27

       COD  |   6 |     .1    -.4     .7      -5     12      2    -.25
       EMR  |   6 |    4.2   -7.3    3.2     -28     36    -34     .07
       ESA  |   6 |     .1   -2.1     .2     -49     19      9     .06
       GFZ  |   6 |     .3     .5    1.1      20      6     -4    -.18
       GRG  |   6 |    1.3    -.7   -5.9      67     43     77    -.16
       JPL  |   6 |    8.3   -4.2    2.9       1      0      1    -.07
       MIT  |   6 |    -.2    2.3   10.4      13     14    -15     .18
       NGS  |   6 |    -.6   -4.3   17.3      14     69      8     .10
       SIO  |   6 |   -3.7   -5.7   -8.0      -6     -3     -7    -.19


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.
    
    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
        ftp://igs.org/pub/station/general/igs14.atx


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 1.2105.a). It also displays the computed satellite
position sigmas for the combined orbits (Table 1.2105.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 2.2105.[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 3.2105.[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 5.2105.0-6). 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 2105 summary.                       (May 10, 2020 - May 16, 2020)

Table 1.2105.a   GPS week: 2105   MJD: 58979.000-58985.000

         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  247|    0     0    -1    13    -1    12  -.05    9    8 |    -601      -2      6    108
        |    0     0     1    16    10    11   .03           |      54      94
emr   79|    0     0     0    -9     9    38   .23   13   12 |  207093    -213     13     92
        |    1     4     4    20     7     8   .03           |     263     441
esa  149|   -1     0    -4   -23    -5     0  -.11   10   10 |   -1275     743      7     81
        |    0     0     0    15    14    11   .01           |     343     835
gfz  182|    0     2     0    -4     7    -2   .08   12   12 |     217    -285     11     88
        |    0     0     2    17     8     7   .03           |     176     309
grg   93|    2     1    -1   -14   -14     8  -.04   14   10 |      55      15     10    122
        |    0     0     5    15     7    21   .04           |     141     291
igr  n/a|    0     0    -2   -11   -40   -28   .01    4    4 |    5615    -172     10     65
        |    0     0     0    11    12    12   .01           |     232     275
jpl   80|    0    -1     0    11   -11   -11   .20    9    9 |  174632    -193      7     94
        |    0     0     1    14    12     9   .02           |   37104     427
mit  373|    0     0     1     1    12   -19  -.11    8    7 |    5407      20     37  32625
        |    0     0     1    30    31    22   .02           |     202     481
ngs  186|    0     0     6    26     3    -1  -.05    9    8 |    -621      31    874   1999
        |    1     0     1    21    20    16   .03           |      79     169
sio  358|    0    -1    -2   -26   -16   -33  -.16   19   18 |     ---     ---    ---    ---
        |    1     0     2    32    18    36   .05           |     ---     ---


Table 1.2105.b   GPS week : 2105   MJD: 58979.000-58985.000   

         Satellite position sigmas for the combined orbits
         (coded in the IGS SP3 orbit files).
         "E" flags eclipsing satellites.
         Units: mm.

              Day of GPS week
 PRN  |    0    1    2    3    4    5    6 |  Remarks
------+------------------------------------+------------------------------------------
   1  |    4    4   10    4    4    4    5 |
   2  |    4    4    4    4    4    3    4 |
   3  |    3    3    3    3    3    3    3 |
   4  |    6    6    5    6    6    5    6 |
   5  |    3    4    4    4    4    3    3 |
   6  |    4    4   13    4    4    4    4 |
   7  |    4    4    3    3    6    5    4 |
   8  |    3    4    3    3    3    3    4 |
   9  |    3    3    3    3    3    3    3 |
  10  |    3    3    3    3    3    3    3 |
  11  |    4    4    4    3    4    3    5 |
  12  |    4    4    4    4    4    3    4 |
  13  |    4    4    4    3    3    3    3 |
  14  |    3    3    3    3    3    3    3 |
  15  |    4    3    3    3    4    3    3 |
  16  |    4    4    4    4    4    4    4 |
  17  |    3    3    3    3    4    4    3 |
  18  |    8    8    8    8    0   11    7 |
  19  |    3    4    4    4    4    3    3 |
  20  |    3    3    3    4    3    4    4 |
  21  |    4    4    4    4    4    4    4 |
  22  |    3    3    3    3    4    3    3 |
  23  |    4    5    5    4    4    4    5 |
  24  |    4    5    4    4    5    4    4 |
  25  |    3    4    3    3    4    3    4 |
  26  |    3    3    3    3    3    3    3 |
  27  |    3    4    4    4    4    3    4 |
  28  |    4    4    3    4    4    3    3 |
  29  |    4    4    4    4    5    4    4 |
  30  |    7    7    6    7    5    4    4 |
  31  |    4    4    4    3    4    3    4 |
  32  |    3    3    3    2    3    3    3 |



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 2.2105.0   GPS week: 2105   Day: 0   MJD: 58979.000                            

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  250|    0     0    -1     5     1     9  -.05    8    8 |    -617     -22      6    111
emr   80|   -1    -4     2   -12    20    23   .19   12   12 |  207143    -670     16    101
esa  149|   -1     0    -4   -47    -3    -7  -.09   10   10 |   -1351     413      8     78
gfz  182|    0     2    -2   -17     6     5   .09   10   10 |      28    -314     12     77
grg   94|    3     1     3   -31   -13     7  -.07   12   11 |     107    -158     11    134
igr  n/a|    0     0    -1   -23   -43   -47   .01    4    4 |    5629    -389      9     72
jpl   80|    0    -1     0    19     0   -21   .21    9    9 |  214290    -475      7     97
mit  373|    0     0     1    21   -13     4  -.13    8    7 |    5657    -275     42   3381
ngs  189|    1     0     3    47     3   -13  -.07    9    7 |    -666      64    945   2137
sio  358|    0    -1    -5   -16   -18    -8  -.15   22   21 |     ---     ---    ---    ---

Table 2.2105.1   GPS week: 2105   Day: 1   MJD: 58980.000                            

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  249|    0     0    -3     9   -15    23  -.09   11    9 |    -602      43      7    118
emr   80|    0    -2     1    19     4    37   .23   12   12 |  206904     237     15     84
esa  149|   -1    -1    -5     0   -30   -13  -.10   11   11 |   -1557    1478      8     75
gfz  183|   -1     2     0   -26    -4     6   .09   12   13 |     338    -100     10     83
grg   94|    4     1     7    -5   -26    28  -.09   12   11 |      20     286     11    124
igr  n/a|    0     0    -3    -7   -60   -31   .01    4    4 |    5619    -239     10     71
jpl   80|    0     0     0    34   -23    -9   .17    9    9 |  214160     173      8     97
mit  373|    0     0     0   -36    55   -38  -.10    8    7 |    5534    -205     32   3309
ngs  178|    0     0     5    40     4    24  -.01   10    8 |    -600      28    961   1878
sio  354|   -1    -2    -4   -35    16   -18  -.10   20   19 |     ---     ---    ---    ---

Table 2.2105.2   GPS week: 2105   Day: 2   MJD: 58981.000                            

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|    1     0     0    11    -4    10  -.05    9    9 |    -617      11      6    111
emr   79|    0    -1     0    -5    14    37   .28   14   12 |  207004    -405     14    117
esa  149|   -1     0    -3   -15    13    -3  -.13   10   10 |    -962     357      8     81
gfz  181|    0     3     0    -9    17    -2   .12   16   14 |     278    -511     12     93
grg   90|    3     1    -1   -16    -4   -36  -.07   30   11 |     271    -370     12    120
igr  n/a|    0     0    -2   -16   -39   -32  -.01    4    4 |    5320    -261     10     59
jpl   80|   -1    -1     0    -1     8    -2   .22   10   10 |  144657    -257      7     90
mit  373|    0     0     0     0    -9    -4  -.13    9    7 |    5382    -327     41   3338
ngs  190|    1     0     4    38   -18     5  -.03    9    7 |    -601       1   1097   2050
sio  361|    0     0     0   -11   -19   -59  -.15   20   18 |     ---     ---    ---    ---

Table 2.2105.3   GPS week: 2105   Day: 3   MJD: 58982.000                            

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|    1     0     0    48    13    29  -.05    8    8 |    -523     -54      6    117
emr   80|   -1    -1     0     5    14    50   .26   12   12 |  206900     314     14     98
esa  149|   -1     0    -4   -14   -17    14  -.09   10    9 |    -752    -630      7     77
gfz  184|    0     2     1    27     1    -5   .11   14   16 |     362    -663     12     74
grg   93|    2     0    -9   -31   -16     7  -.02   12   12 |     -36     -53     10    139
igr  n/a|    0     0     0     2   -38    -7   .00    4    4 |    5440     225      9     65
jpl   80|    0    -1     0    11    -5     5   .23    9    9 |  144474     443      6    100
mit  373|    0     0     1   -34    16   -50  -.12    8    7 |    5102     453     40   3156
ngs  186|    0     0     9    23    -6    -5  -.11    9    8 |    -528    -118    784   2179
sio  360|    0     0     0   -71   -18   -36  -.22   19   17 |     ---     ---    ---    ---

Table 2.2105.4   GPS week: 2105   Day: 4   MJD: 58983.000                            

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  249|    0     0     0     2     4    -7  -.01    9    9 |    -628      90      6    101
emr   80|    4     9    -9   -36     7    38   .24   16   16 |  207475     122     14     84
esa  149|    0    -1    -4   -32     0     9  -.11    9    9 |   -1580    1586      7     79
gfz  182|    0     0     3   -13     9   -13   .04   11   12 |      43       4     12     76
grg   93|    1     0    -2   -17   -13    20   .03   10    9 |    -129     460      9    127
igr  n/a|    0     0    -2   -23   -37   -30   .02    4    4 |    5988      35     14     67
jpl   80|    0    -2     1    -4   -18   -19   .19    9    9 |  145299    -186      7     89
mit  373|    0     0     1    46     9     8  -.09    7    7 |    5433     897     44 208447
ngs  187|    0     0     6     4     9   -24  -.05    9    8 |    -745     322    927   2097
sio  354|    0    -1    -1    23   -31   -11  -.16   18   18 |     ---     ---    ---    ---

Table 2.2105.5   GPS week: 2105   Day: 5   MJD: 58984.000                            

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|    1     0    -3    17   -12    15  -.03    8    8 |    -540    -179      5    103
emr   80|    0    -2     0   -34     8    35   .21   10   10 |  207419    -780     12     84
esa  149|   -1     0    -6   -33     5    14  -.12   10   10 |   -1095     421      8    100
gfz  185|    0     1     1     3    21    -1   .05    9    9 |     438    -562     10    107
grg   95|    1     0     0    11    -6    11  -.01   11    9 |     191    -190      9    100
igr  n/a|    0     1    -3   -14   -19   -25   .00    4    4 |    5836    -580     10     58
jpl   80|    0     0     0     1   -17   -13   .17    8    8 |  145106    -881      8     91
mit  373|    0     0     0    -4   -22   -33  -.11    7    7 |    5561    -396     37   3606
ngs  188|   -1     0     7    43    43   -10  -.06    8    7 |    -533    -201    715   1884
sio  354|    1    -1     0   -61   -39     0  -.23   17   18 |     ---     ---    ---    ---

Table 2.2105.6   GPS week: 2105   Day: 6   MJD: 58985.000                            

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  243|    0     0    -3     1     1     9  -.09    9    8 |    -684      91      6     98
emr   80|    0    -4     3     0    -4    45   .21   12   12 |  206807    -310     12     80
esa  149|    0     0    -4   -19    -6    -9  -.11   10    9 |   -1631    1576      7     83
gfz  181|    0     2    -3     5     3    -7   .10   11   11 |      35     147     11    108
grg   96|    2     1    -5   -11   -20    23  -.03   10    9 |     -39     135     11    114
igr  n/a|    0     0    -2     3   -46   -23   .01    4    3 |    5477       0     10     67
jpl   80|    0     0     2    24   -24   -17   .20    9    9 |  214444    -172      8    100
mit  373|   -1     0     3    18    53   -21  -.12    8    8 |    5184      -1     28   3140
ngs  187|    0     0     7    -9   -13    12  -.03    9    8 |    -679     125    691   1770
sio  371|    0    -1    -3   -13    -4  -102  -.14   19   17 |     ---     ---    ---    ---

       
       
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 3.2105.0   GPS week: 2105   Day: 0   MJD: 58979.000                            

        Weighted Average                                            Orbit Dynamics (7 days)
 PRN  |  cod  emr  esa  gfz  grg  igr  jpl  mit  ngs  sio  IGS |   cod  emr  esa  gfz  grg  igr  jpl  mit  ngs  sio   IGS
------+--------------------------------------------------------+---------------------------------------------------------
   1  |    5   11   16    9   11    4    8    7    9   13    3 |   229  229  231  230  237  230  228  228  226  230   229
   2  |    7    8   10    7   14    4    7    7   11   23    3 |    58   58   55   54   52   55   57   59   56   56    56
   3  |    6    8    7   11    8    3    9    9    5   20    3 |    18   29   23   19   23   21   29   22   22   25    22
  X4  |    6    9   11    6  ---    3   23   12   10   35    5 |    82   82   79   83  ---   81   80   82   85   93    81
   5  |    6    8   10   13    8    5    8    9    8   19    3 |    44   44   43   46   39   42   46   40   40   41    42
   6  |    7   10   13   10   11    5    9    9    9   18    3 |   423  293  421  420  424  421  420  421  422  421   421
   7E |    8   10    6   14   11    5    9    7    9   23    3 |    46   43   47   53   44   46   43   40   45   42    44
   8  |    5   11   10    7   11    3    8    6    8   15    3 |    23   27   23   23   26   22   27   20   22   27    23
   9  |    7    9    7   10    7    4    7    5    6   14    2 |    28   33   29   25   27   27   33   27   27   28    28
  10  |    6   10    8    6    8    3    8    8    6   12    2 |    29   32   25   28   31   27   32   31   25   30    28
  11E |    9   13    9   16   12    3    7    6   10   13    3 |    37   41   39   38   40   38   38   36   35   42    37
  12  |    8   15   11    9    8    4    8    7   10   21    3 |    36   43   35   39   40   36   39   37   37   40    37
  13  |   10   10    7   10   11    4    8    7   10   21    3 |    28   36   27   30   28   28   35   32   31   38    30
  14  |    7    9    7    7    7    3    6    5    8   29    3 |    39   41   39   41   40   40   40   39   40   42    39
  15  |    9    8    8   10   10    4    7    7   10   27    3 |    55   58   53   57   50   54   55   52   49   55    53
  16  |    9   23    7    8   13    4    7    8    8   29    4 |    22   23   19   21   18   19   19   18   21   28    18
  17  |    5    7    7   11   12    4    8    6    5   21    3 |    25   29   27   30   27   27   30   27   28   31    26
  18  |   16   29   23   14   17    5   25   14   17   50    7 |    62   48   44   60   51   58   47   65   44   52    61
  19  |    7   12    6    8    9    2    8    7    6   22    3 |    37   39   33   41   36   35   36   37   39   30    36
  20  |    7   11    8    9    7    3    4    6    8   20    3 |    27   27   23   29   29   25   26   27   26   31    26
  21  |   10   11    9   10   21    4    8    5   11   20    4 |    55   62   56   60   66   58   60   59   62   56    58
  22  |    5    8    7    9    8    3    5    8    6   24    3 |    52   53   50   50   53   51   51   47   51   55    50
 X23  |   10   20    4   10   10    4    5    9   13  ---    4 |    22   20   18   20   24   22   25   23   29  ---    21
  24E |   11   12   16   12   14    5    7    9   11   13    4 |    23   22   23   22   25   20   21   23   21   19    19
  25  |    9   10   11    8   10    4    7    7    8   15    3 |    19   23   23   20   21   18   23   20   18   26    19
  26  |    5    9    8   12   11    4    7    5    8   17    3 |    27   28   28   33   27   25   27   24   25   27    26
  27  |    5   12   11    6   15    4    8    8    7   14    3 |    21   23   24   20   28   21   25   19   22   25    21
  28  |    9   11    7   10    9    6    7    8    6   29    3 |    21   27   22   24   20   21   25   21   24   26    21
  29  |    7   16    7   12   16    4   11    8   15   23    4 |    33   36   34   34   37   33   35   36   36   33    33
 X30E |   14   10   16   32   15    5  ---   11   16   22    6 |    49   47   47   46   47   44  ---   43   46   46    45
  31E |    7   11    6   12   15    4    9   10    8   18    3 |    44   46   44   44   42   44   45   45   44   45    43
  32  |    8    7    7    5    7    3    6    5    8   15    2 |    19   25   19   19   19   19   23   17   20   23    19
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |    8   12   10   10   12    4    9    8    9   22      |T   54   52   53   54   53   53   55   53   53   56    53
 WRMS |    8   12   10   10   11    4    9    7    7   21      |NE  56   53   55   57   56   56   58   56   56   60    56
 MEDI |    7   10    8   10   11    4    8    7    8   20      |MD  33   36   33   34   36   33   35   36   35   38    33

Table 3.2105.1   GPS week: 2105   Day: 1   MJD: 58980.000                            

        Weighted Average                                            Orbit Dynamics (7 days)
 PRN  |  cod  emr  esa  gfz  grg  igr  jpl  mit  ngs  sio  IGS |   cod  emr  esa  gfz  grg  igr  jpl  mit  ngs  sio   IGS
------+--------------------------------------------------------+---------------------------------------------------------
   1  |   10   18   17    7   12    5    9    7   10   12    4 |   225  226  226  228  226  226  225  224  225  225   225
   2  |   10    9    8    8   16    4    8    8    7   20    3 |    62   64   62   63   61   62   65   67   65   61    63
   3  |    7    8    7    8    9    4    9    8   10   17    3 |    16   27   17   17   16   17   26   18   22   20    18
  X4  |    7   10   12    8  ---    4   21   11    7   37    5 |    57   59   54   61  ---   57   56   57   58   67    57
   5  |    7    7   11   12   11    4    8    8    8   20    3 |    27   29   24   26   23   26   29   26   25   30    26
   6  |    8   11   14   11    7    5    8    9    9   14    3 |   320  396  321  323  323  321  320  324  320  326   322
   7E |   19    9    9   12   11    4    8    5   12   15    4 |    53   41   46   46   41   42   43   42   42   43    43
   8  |   10   12   12    8   11    3    9    7   11   11    3 |    18   23   18   18   20   17   23   15   18   20    17
   9  |    8    8    7   10    9    3    7    4    5   11    2 |    20   27   20   18   20   20   26   19   23   19    20
  10  |    6    7    7    8    6    3    8    6    6   13    2 |    17   26   18   22   20   19   25   20   17   19    19
  11E |   11    9    8    8   19    3    6    6   12   15    3 |    28   28   27   25   33   26   26   24   27   31    25
  12  |   10   14   10   12   10    3   10    8    9   19    3 |    26   31   22   28   28   26   29   26   27   26    25
  13  |    9   11    7    9   19    4   10    5    7   18    3 |    28   35   26   30   29   27   34   30   27   34    29
  14  |    8    8    8    8    8    2    8    5    8   24    3 |    36   35   34   35   35   34   36   37   36   38    35
  15  |    7   12    8    9    8    4    6    6    5   25    3 |    36   43   35   36   35   37   39   35   37   36    36
  16  |    9   21    7    8   11    4    9    5    9   29    4 |    19   18   16   20   16   17   16   16   20   25    15
  17  |   13    9    9   11    8    4    6    7    8   18    3 |    21   27   20   26   23   23   25   24   26   25    22
  18  |   13   29   23   13   18    6   24   14   18   50    7 |    30   31   22   34   29   29   24   34   21   40    32
  19  |   12   14    8    9    8    3    7    6    8   19    3 |    29   29   25   30   27   27   28   28   30   22    27
  20  |    6    9    8    9    8    4    6    7    9   21    3 |    16   18   16   20   21   16   18   16   17   22    15
  21  |    7    9    8    8   22    4   10    6    9   17    3 |    49   51   47   51   68   48   51   51   51   48    50
  22  |    7    7    9    5   10    4    7   10    9   23    3 |    41   40   37   40   40   37   38   34   37   41    37
 X23  |   13   21    8   12   12    5    7    5   14  ---    4 |    24   22   19   19   20   19   24   22   28  ---    20
  24E |   16   11   15   16   17    5    8   11    9   13    4 |    21   24   23   26   28   22   22   25   24   21    21
  25  |    9   14   13   14   10    3   10    9    9   11    3 |    19   24   25   26   20   20   22   21   18   24    19
  26  |    6   10   10   13   10    4    8    5    8   15    3 |    20   23   25   25   22   20   23   21   19   26    21
  27  |    7   11   15   10   15    3    8    7   13   12    4 |    16   21   20   18   22   18   19   15   23   18    16
  28  |   17   11    8    8   11    4    7    7   10   19    3 |    26   30   23   25   22   24   28   24   27   25    24
  29  |    6   16    6    9   12    5    9    8   10   23    3 |    27   28   24   29   27   26   26   26   28   21    25
  30E |   25    9   17   41   16    5   10    9   14   13    6 |    57   45   44   47   44   43   32   45   45   45    45
  31E |   14   10    7    9   12    4    9   11   15   12    4 |    40   40   39   37   38   38   38   42   40   41    39
  32  |    9    6    7    8   10    3    8    4    9   13    2 |    15   23   18   19   18   17   23   17   19   22    18
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |   11   12   11   12   12    4    9    8   10   20      |T   44   49   43   45   45   43   45   44   45   47    43
 WRMS |    9   12   11   13   11    4    9    7    8   19      |NE  45   51   44   46   45   44   47   45   45   48    44
 MEDI |    9   10    8    9   11    4    8    7    9   17      |MD  27   29   24   26   27   26   26   26   27   26    25

Table 3.2105.2   GPS week: 2105   Day: 2   MJD: 58981.000                            

        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  |   16   39   15   26  137   12   32   22   22   24    9 |   644  644  643  645  625  643  643  644  640  647   643
   2E |   11    9   11   12   14    5    7    9   11   24    4 |    57   52   54   61   62   56   57   55   62   51    56
   3  |    9    8    5   11    8    4    8    8    9   16    3 |    20   28   19   18   19   19   28   19   21   20    20
  X4  |    8    9   12    7  ---    5   22   10   12   30    5 |    66   65   65   67  ---   65   66   68   68   71    66
   5  |    8    8   11    9   10    3    8   10    5   21    3 |    27   33   34   32   32   32   35   29   30   36    31
  X6  |   17  ---   22   34  272   12   79   23   40   47   13 |  9999  --- 9999 9999 9999 9999 9999 9999 9999 9999  9999
   7E |    7    9    8   17   10    4    8    7    7   15    3 |    25   24   21   19   24   21   23   21   23   23    21
   8  |    8   10   11    8   10    4    9    7    9   11    3 |    17   24   19   19   22   18   22   16   19   20    18
   9  |   11    7    8   12   10    4    9    5    6   12    3 |    24   31   24   22   24   24   31   26   24   21    25
  10  |    9    6    6    8    4    3    8    8    7    7    2 |    16   26   17   18   17   17   26   19   19   19    18
  11E |    8    9   10   16   17    4    7    5   13   12    3 |    24   26   24   26   25   23   22   23   24   29    22
  12  |    7   13    9   10   10    3    8    7    8   19    3 |    34   36   33   35   32   31   31   33   30   32    31
  13  |    9   12    7   11   26    4    7    8    9   21    4 |    21   30   21   26   26   22   28   20   24   27    21
  14  |    6    7    5   11    8    3    8    5    5   23    3 |    31   32   30   39   31   31   31   31   33   36    31
  15  |    7    8    9   10    9    3    5    6    7   23    3 |    43   48   46   48   45   46   48   44   46   44    45
  16  |    9   22    6   12   11    3    9    7   11   26    4 |    20   19   17   20   16   15   18   15   18   22    15
  17  |    8    9    8   18   10    2    8    6    6   18    3 |    20   28   21   29   25   22   26   20   23   24    22
  18  |   18   29   22   14   16    6   23   14   16   48    7 |    27   32   25   29   31   26   30   32   24   44    29
  19  |    8   12    8   20   12    4   10    8    7   24    4 |    24   31   23   37   30   25   25   24   25   22    24
  20  |    9    9    8    9    6    4    5    8    7   22    3 |    24   26   22   26   22   23   25   25   25   26    23
  21  |   11    9   10   12   70    4    8    7    8   19    3 |    67   66   65   68   58   65   67   64   65   63    66
  22  |    9    6    8    9    8    4    6    7    9   20    3 |    52   50   50   49   50   50   52   51   51   52    50
 X23  |   16   19    8   14   11    4    8    7   11  ---    4 |    19   19   16   20   17   17   20   19   21  ---    16
  24E |   11   16   17   13   14    5   10   10    8   10    4 |    18   22   17   17   22   18   21   21   21   19    17
  25  |    7   11   12   11    8    3    7    9    8   11    3 |    19   27   23   25   21   19   23   22   18   22    20
  26  |    6    9    9   12    7    4    7    6    7   12    2 |    27   28   29   32   26   26   29   26   27   26    27
  27  |    6   11   14   11   12    4    9    8    7   12    3 |    20   22   24   22   25   20   21   18   21   23    20
  28  |   11    9   10    8    9    4    7    6    7   19    3 |    18   27   20   24   20   19   26   19   19   24    20
  29  |    7   16    7   11   12    3    9    9   10   23    3 |    21   23   20   25   25   21   22   23   23   18    20
  30E |    9   13   15   52   12    4   10    9   11   12    6 |    22   25   24   34   26   20   22   23   23   25    22
  31E |    7   12    6   16   10    4    8    8   11   12    3 |    29   34   32   36   31   33   31   30   35   36    31
  32  |    7    5    6   10    8    4    6    7    4   16    2 |    21   25   18   20   19   18   25   20   18   27    20
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |    9   14   10   16   30    4   10    9    9   20      |T   48   51   48   51   48   47   50   48   49   51    48
 WRMS |    9   12   10   14   11    4   10    7    7   18      |NE  52   56   52   55   52   52   55   52   52   56    52
 MEDI |    8    9    9   11   10    4    8    8    8   19      |MD  24   28   24   26   25   23   26   23   24   26    22

Table 3.2105.3   GPS week: 2105   Day: 3   MJD: 58982.000                            

        Weighted Average                                            Orbit Dynamics (7 days)
 PRN  |  cod  emr  esa  gfz  grg  igr  jpl  mit  ngs  sio  IGS |   cod  emr  esa  gfz  grg  igr  jpl  mit  ngs  sio   IGS
------+--------------------------------------------------------+---------------------------------------------------------
   1  |    6   23   16    9   10    6    9    9    9    9    4 |   322  323  326  321  330  324  323  329  323  327   325
   2E |    8    9    7    9   20    7    7    5   11   21    3 |    63   61   58   62   68   59   63   61   60   61    61
   3  |    9    8    5    8    9    3    7    9    8   14    3 |    22   30   23   25   20   23   29   21   23   22    22
  X4  |    8   10   11    7  ---    5   21    9    9   38    5 |    50   48   43   49  ---   48   49   49   55   49    48
   5  |    8   11    8   10   11    4    7    9    7   23    3 |    37   39   37   38   39   37   43   35   34   40    37
   6  |    8   11   13   13   13    6    8   11   10   11    3 |   504  822  499  501  501  500  500  495  505  496   500
   7E |    7   10    8   10   14    3    7    5    9   17    3 |    44   39   40   39   35   39   40   37   40   39    38
   8  |    7   11   10   10   10    3    9    8    7   14    3 |    25   29   25   24   24   25   29   23   24   25    24
   9  |    8    8    5   10    8    4    7    5    8   11    2 |    26   28   24   25   24   24   29   20   27   22    24
  10  |    6    8    8    8    6    4    8    8    6    8    2 |    23   32   24   23   22   25   28   22   23   20    23
  11E |    6   11   10   11   10    3    7    7   10   13    3 |    23   29   23   25   23   23   25   23   24   27    23
  12  |    8   13    8    9   10    4    7    9   11   18    3 |    31   33   26   33   26   29   29   26   32   23    27
  13  |    9   13    7    9   10    4    8    5    7   21    3 |    24   34   24   28   20   26   33   22   27   32    25
  14  |    6    7    6    9   11    3    6    4    7   24    3 |    30   31   27   33   26   31   30   27   31   32    28
  15  |    7   10    9   10   11    4    6    7    7   23    3 |    51   52   49   49   50   47   51   45   47   49    48
  16  |   10   19    7    9   12    4    9    6   10   27    4 |    24   25   22   24   23   23   24   22   24   26    21
  17  |    9    8    8   13   10    4    7    7    9   17    3 |    26   30   24   29   29   26   31   26   27   26    26
  18  |   14   28   21   13   17    6   24   15   20   49    7 |    32   47   39   34   40   31   42   37   44   52    35
  19  |    8   12    8   10   10    3    9    6   12   19    3 |    29   32   26   32   28   27   30   27   30   24    27
  20  |    7    9    8   11    7    2    8    9    8   24    3 |    23   26   24   28   22   24   23   24   26   29    22
  21E |    9   11   10    8   29    5   10    6    9   17    4 |    57   59   55   57   58   57   58   57   60   56    58
  22  |    7    7    8    8    9    3    6    8    6   23    3 |    34   35   32   36   30   34   35   34   33   40    33
 X23  |   12   17    7    9   13    6    4    6   11  ---    3 |    31   27   27   30   25   27   30   26   33  ---    28
  24E |   15   15   13   11   11    4    9   10   11   11    4 |    27   29   25   27   28   26   27   24   28   25    24
  25  |    8   10   13   11    8    2    7    9    6   12    3 |    26   30   29   28   25   26   28   24   25   30    25
  26  |    6   10    9   13   10    4    7    5    7   10    3 |    29   30   32   32   26   30   29   27   30   29    28
  27  |    8   11   11    7   14    3    9    7    9   13    3 |    27   28   27   24   27   25   27   23   25   28    25
  28  |   11    9    7   11   12    4    6    7   11   19    3 |    26   30   26   28   27   26   31   26   27   28    26
  29  |    9   16    8   10   12    3    9    9   13   27    4 |    28   30   26   28   28   26   27   25   29   27    24
  30E |    8   12   13   50   15    4   13    8   13   13    6 |    35   34   30   41   39   32   25   31   33   32    32
  31E |    7   10    6   15   12    4    9    6    7   12    3 |    33   39   33   38   35   35   34   33   38   34    34
  32  |    5    8    6    8   10    3    4    4    7   12    2 |    26   32   27   27   27   27   30   21   22   28    25
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |    8   12   10   14   12    4    9    8    9   19      |T   55   68   54   56   55   55   57   53   56   57    54
 WRMS |    8   12    9   16   12    4    9    7    8   17      |NE  60   76   59   61   59   59   62   58   61   62    59
 MEDI |    8   10    8   10   11    4    7    7    9   17      |MD  29   32   27   30   27   27   30   26   30   29    27

Table 3.2105.4   GPS week: 2105   Day: 4   MJD: 58983.000                            

        Weighted Average                                            Orbit Dynamics (7 days)
 PRN  |  cod  emr  esa  gfz  grg  igr  jpl  mit  ngs  sio  IGS |   cod  emr  esa  gfz  grg  igr  jpl  mit  ngs  sio   IGS
------+--------------------------------------------------------+---------------------------------------------------------
   1  |    7   14   17   15   10    4   10    9   10   13    4 |   400  402  403  399  405  402  400  403  400  403   401
   2E |    8   15    8    7   14    5    7    7    8   21    3 |    34   33   30   32   38   30   34   35   30   28    32
   3  |    9   11    6    8    8    5    7    7    7   18    3 |    24   33   24   23   22   24   31   22   23   22    24
  X4  |    8   14   10   10  ---    4   24    9    9   33    5 |    72   70   70   71  ---   71   75   72   73   69    71
   5  |    9   16    8   12    7    4    7    7    8   23    3 |    34   44   33   35   33   33   34   29   32   36    32
   6  |    7   13   14   12    8    3    8    8    9   12    3 |   867  521  865  868  855  866  864  864  865  869   866
  X7E |    9  ---   10   12   39    6    7    7   13   19    6 |    23  ---   25   19   43   23   23   22   28   20    23
   8  |    6   16   10    9    8    2    9    8    7   13    3 |    22   29   21   21   25   22   28   19   21   24    22
   9  |    6   15    7    6    6    3    7    3    5   12    2 |    29   37   32   29   30   30   35   27   29   27    30
  10  |   10   12    7    9    6    2    8    8    8   10    3 |    19   31   23   21   22   22   28   21   23   22    21
  11E |   10   15    9   13    8    3    9    9    8   15    3 |    28   32   28   28   30   27   30   26   27   35    27
  12  |    9   17    6   12    7    4   11    8    9   20    3 |    39   41   35   39   38   35   35   34   33   38    35
  13  |    9   16    6   10    8    3   10    4    7   20    3 |    23   31   19   25   24   22   29   22   26   32    23
  14  |    7   12    5   10    8    3    6    5    4   24    3 |    25   24   21   28   24   22   26   26   27   26    25
  15  |    9   11    8   11    6    3    8    7   10   23    3 |    51   57   50   51   50   50   51   48   51   49    50
  16  |    8   22    6   12   10    4    9    7   10   27    4 |    20   22   16   19   18   17   20   17   16   22    16
  17  |   11   19    7   16    9    3    9    7    9   18    4 |    26   31   23   28   25   24   27   23   24   25    23
 X18  | >>>>  ---  ---  137  ---  144  ---    3  ---  ---    0 |   173  ---  --- 9999  --- 9999  --- 9999  ---  ---  9999
  19  |   12   17    7   13    9    2    9    7   10   19    3 |    31   33   26   34   27   27   28   27   28   22    27
  20  |    7   13    4    6    9    2    5    7    9   23    3 |    32   36   32   33   30   31   31   31   34   32    31
  21E |    9   16    7   12   16    4    7    6   10   15    3 |    39   47   38   39   43   39   41   42   40   37    40
  22  |   14    9    9    9   13    5    7    9    6   23    3 |    88   83   80   83   81   82   82   81   80   83    82
 X23  |   10   22    6   11    9    6    6    6    8  ---    3 |    27   28   21   24   21   23   28   22   28  ---    24
  24E |   12   13   14   13   18    4   10    9   15   15    4 |    24   27   20   30   29   23   24   21   29   22    22
  25  |    8   15   11   15    7    4   10    9    7   13    3 |    25   30   29   29   26   24   28   23   23   30    24
  26  |    8   14    8   15    7    4    9    6    7   12    3 |    30   30   30   33   29   29   30   26   28   25    28
  27  |    7   15   10   10   11    4    9    7    8   14    3 |    21   24   22   19   28   22   26   18   20   23    21
  28  |   14   20    6   11    9    4    9    6    8   16    3 |    20   32   17   23   18   18   23   17   20   17    18
  29  |    9   24   11   11   14    6   11    7   12   20    4 |    27   28   24   29   29   25   27   24   27   22    24
  30E |    6   35   13   17   10    6   12   10   11   13    5 |    21   45   23   28   25   20   20   21   22   18    21
  31E |   11   12    6   10   15    6    8   11   11   14    4 |    28   28   26   29   29   26   28   27   29   26    26
  32  |    7   12    5    7    9    3    5    6    6   15    2 |    26   34   26   25   25   25   30   23   26   26    26
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |    9   16    9   11   10    4    9    7    9   18      |T   73   64   68   70   70   68   71   68   69   71    68
 WRMS |    9   16    9   12    9    4    9    7    8   18      |NE  86   72   80   82   81   81   84   79   81   84    81
 MEDI |    9   15    8   11    9    4    9    7    8   16      |MD  27   32   26   29   29   25   29   26   28   26    26

Table 3.2105.5   GPS week: 2105   Day: 5   MJD: 58984.000                            

        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   12   17    8   11    3   11    8    7   11    3 |   366  365  368  368  369  367  368  369  367  368   368
   2E |    7    9    8    7   14    5    7    6    7   18    3 |    36   35   33   32   38   32   35   35   33   29    33
   3  |    8    8    8    9    7    4   10   10    7   16    3 |    21   27   21   22   21   20   27   22   24   18    21
  X4  |    7    9    9    8  ---    4   23   10    8   34    5 |    58   61   58   61  ---   59   61   60   63   69    60
   5  |    5   11    9    9    8    3    7    9    9   20    3 |    23   26   21   21   25   22   25   23   21   27    22
   6  |    6   10   16    8   12    3    9    9    8   12    3 |   732  588  731  733  727  731  733  733  735  735   732
   7E |    9   10   11   12   33    6    9    7    8   19    4 |    20   22   24   27   33   22   22   22   21   23    20
   8  |    7   11   11    7   10    3    7    5    8   14    3 |    19   27   19   19   21   19   24   17   20   21    19
   9  |    7    7    8    6    5    4    8    3    6   14    2 |    21   28   19   20   20   20   27   22   21   20    21
  10  |    9    8    7    5    6    3    8   10    7    8    2 |    24   28   23   25   22   22   29   23   22   26    23
  11E |   10   12    9   11    7    4    8    8    9   13    3 |    25   30   24   28   26   23   24   22   25   28    24
  12  |   10   14    9    8    9    3    6    9    6   18    3 |    31   34   29   34   33   31   34   33   33   34    31
  13  |    7   12    9    8    8    3    9    5    7   19    3 |    26   33   22   26   28   25   32   25   28   32    27
  14  |    8    6    7    9    6    2    6    4    5   25    3 |    23   26   24   30   26   25   25   25   28   28    25
  15  |    7    8    9    8    9    4    5    6    8   24    3 |    42   47   43   43   41   44   46   44   46   47    43
  16  |    7   18    8    8   10    3    9    6   10   27    4 |    18   16   14   18   15   15   15   15   16   22    14
  17  |    8   11    8   14    8    3    6    6    9   19    3 |    19   27   19   24   23   21   25   21   24   23    21
 X18  |   14   27   14  ---   70   17  ---   18  ---  ---   10 |    59   29   27  ---   42 9999  --- 9999  ---  ---  9999
  19  |    9   11    7    8    8    3    7    7    9   20    3 |    27   28   25   31   29   27   26   28   28   22    26
  20  |   10   10    7    8    8    4    8    9    9   25    3 |    28   28   24   31   28   26   27   28   25   33    26
  21E |    8   13    8    8   18    4    7    7   10   14    3 |    38   41   36   37   46   38   37   38   41   33    38
  22  |    8    7   10    7    8    3    9    7    7   21    3 |    33   37   32   31   35   31   37   31   32   33    32
 X23  |   13   17    8    8    6    5    6    5   10  ---    3 |    18   18   14   19   17   17   20   19   21  ---    17
  24E |   11   12   14   11   16    4    8    9    9   11    4 |    16   20   14   16   22   16   20   17   22   13    15
  25  |    7    7   12   10    8    4    7    7    6   10    3 |    21   26   22   25   22   21   24   21   20   22    21
  26  |    5   10   10   12    7    3    8    5    9   14    3 |    23   28   23   28   25   23   26   23   25   21    24
  27  |    5   11   12    6   12    2    6    5    7   13    3 |    20   24   21   21   23   20   23   18   22   22    20
  28  |   10   10    7    9    9    4    8    7    8   19    3 |    15   22   14   17   15   16   21   15   19   16    15
  29  |    8   13    7    9   10    3    8    7    9   23    3 |    26   28   24   27   27   26   27   27   29   21    25
  30E |   11   10   14   14   10    4   13   10   12   12    4 |    24   26   25   29   24   23   20   21   23   22    22
  31E |    7    8    7   11   12    3    7    6    9   15    3 |    28   29   29   28   27   28   29   27   31   29    27
  32  |    9    6    5    6    8    2    5    5    6   14    2 |    20   24   17   19   18   18   24   18   21   16    19
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |    8   10   10    9   11    4    8    7    8   17      |T   59   57   57   60   60   58   61   59   60   61    59
 WRMS |    8   10   10    9    9    4    8    7    7   18      |NE  68   65   66   70   68   68   71   69   70   72    68
 MEDI |    8   10    9    8    9    3    8    7    8   16      |MD  24   28   24   27   26   23   26   23   25   23    24

Table 3.2105.6   GPS week: 2105   Day: 6   MJD: 58985.000                            

        Weighted Average                                            Orbit Dynamics (7 days)
 PRN  |  cod  emr  esa  gfz  grg  igr  jpl  mit  ngs  sio  IGS |   cod  emr  esa  gfz  grg  igr  jpl  mit  ngs  sio   IGS
------+--------------------------------------------------------+---------------------------------------------------------
   1  |    8   16   20   18   16    3   10   11    8   10    4 |   398  396  399  399  402  398  400  399  397  398   398
   2E |   12    9   11    9   11    4    8    8   10   18    3 |    40   34   34   41   42   37   38   37   35   31    36
   3  |    8    7    7    5    7    3    9   10    7   16    3 |    22   29   23   26   24   23   29   26   23   26    24
  X4  |    7   12    8    9  ---    4   20   10   10   37    5 |    78   81   79   81  ---   79   80   80   84   91    80
   5  |    8    9    8    8    7    3    7    9    6   20    3 |    41   46   44   43   41   43   45   41   43   45    42
   6  |   11   13   13   10    9    5   10   10    9   10    3 |   852  620  851  853  845  851  850  850  854  854   851
   7E |   10   12    9   10   11    4    8    6   10   19    3 |    29   31   32   31   27   31   29   31   33   29    28
   8  |   10   12   12   12    8    3    9    7    8   10    3 |    20   26   21   23   23   22   24   18   22   25    21
   9  |    9    9    9    9    6    3    9    3    5   11    2 |    26   31   28   29   26   27   31   24   28   26    26
  10  |    9    5    7    6    7    3    8   10   11    7    3 |    28   32   27   29   27   28   33   29   28   30    28
  11E |    8   10   12   15   22    4    9   11    9   14    4 |    26   32   29   32   36   28   29   26   29   36    29
  12  |    6   14   12   11    7    3    7   10   11   16    3 |    39   43   37   44   40   39   41   43   39   41    40
  13  |    9   10    7   11    8    3    7    7    6   20    3 |    27   36   24   27   26   26   34   30   28   36    28
  14  |    8    8    7    9    6    3    5    5    6   22    2 |    31   34   30   39   33   34   34   36   35   39    34
  15  |    8    9    8   12    6    3    5    8    7   24    3 |    57   61   57   58   59   58   59   55   55   55    57
  16  |    8   19    8   12   11    4    9    7   10   25    4 |    19   22   18   24   16   19   16   18   19   24    17
  17  |    7    6    6    9    6    2    7    6    9   19    2 |    24   27   22   27   25   24   28   22   26   29    24
  18  |   13   31   15   14   14    8   24   16   19   47    7 |    39   31   28 9999   26 9999   22 9999   11   31  9999
  19  |    7   10    7    7    6    2    8    6    9   21    3 |    30   36   28   35   31   31   33   32   36   27    31
  20  |   10    7    8    8    8    3    7   10   11   27    3 |    32   31   29   33   32   32   31   33   35   38    31
  21E |    6   14    9   10   13    4   10    7   10   16    3 |    37   40   37   40   44   37   38   38   37   37    38
  22  |    6    6    9    7    7    3    7    8    5   21    3 |    45   46   44   45   47   45   46   44   45   47    44
 X23  |   19   19    9   12    7    6    7    5   13  ---    4 |    25   18   18   23   20   22   21   21   30  ---    21
  24E |   10   11   11   13   13    6   11   10   11   10    4 |    18   21   17   22   23   18   21   18   23   17    17
  25  |    9   10   12   12    5    2    7    9    8   12    3 |    21   27   23   28   22   22   26   24   20   26    22
  26  |    6   10   10   13    8    3    8    7    8   12    3 |    29   33   32   36   28   29   32   27   30   28    29
  27  |    9   11   14   10   10    3    9    6   10   13    3 |    24   25   24   26   24   23   22   19   22   26    22
  28  |    9   10    6    9    8    3    8    6    8   19    3 |    16   24   15   21   16   17   22   17   18   19    17
  29  |    8   14    5   11   10    3    8    9    8   24    3 |    32   33   31   34   33   31   31   32   35   32    31
  30E |   11   13   11   15    9    4   11    8   12   14    4 |    38   37   35   41   36   35   22   36   37   33    35
  31E |    9    9    6   12   13    3    7    8   13   14    3 |    41   45   43   45   41   44   43   44   47   40    42
  32  |    8    9    5    8    7    3    6    6    7   12    2 |    22   29   20   20   21   20   27   20   21   28    21
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |    9   12   10   11   10    4    9    8    9   19      |T   68   64   68   72   68   70   69   70   69   72    69
 WRMS |    8   12    9   11    9    3    9    8    8   17      |NE  79   72   78   83   78   80   80   80   79   84    80
 MEDI |    8   10    9   10    8    3    8    8    9   16      |MD  29   32   29   33   28   31   31   31   30   31    29



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 4.2105   GPS week: 2105   MJD: 58979.0-58985.0

CENT| CLK EPO  |        BRUX       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3057 |U   13    10    32 |U   10    14    25 |U   11     9    33 |
emr | emr 3030 |U   18    15    35 |U   13    17    49 |U   13    15    45 |
esa | esa 3058 |    11     9    23 |U    9    16    32 |    11    11    29 |
gfz | gfz 3054 |U   12    17    28 |U    8    14    31 |U   11    10    34 |
grg | grg 2962 |U   12    12    30 |U   10    17    34 |    12     9    35 |
igr | igr 3056 |    14     8    34 |     9    14    27 |    11    10    32 |
igs | igs 3058 |    10     8    25 |     9    14    28 |    10     9    31 |
jpl | jpl 3030 |U   15    20    37 |U   11    18    38 |U   11    16    40 |
mit | mit 3072 |U   22    14    38 |U   10    13    30 |U   17    13    46 |



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 5.2105.0   GPS week: 2105   Day: 0   MJD: 58979.0

CENT| CLK EPO  |        BRUX       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3072 |    10    11    26 |     9    10    28 |    10    10    35 |
emr | emr 3072 |    17    14    35 |    12    17    52 |    13    20    50 |
esa | esa 3072 |    11     9    27 |    10    14    33 |     8     9    30 |
gfz | gfz 3072 |    10    11    29 |     9    11    32 |     9    11    37 |
grg | grg 2976 |    11    14    33 |    10    13    27 |    12    11    39 |
igr | igr 3072 |    10     9    27 |     9    12    25 |     9    11    33 |
igs | igs 3072 |    10     9    26 |     9    11    26 |     9    10    33 |
jpl | jpl 2976 |    11    11    33 |    11    15    38 |     9    19    40 |
mit | mit 3072 |    15    14    43 |    11    11    32 |    11    10    45 |

Table 5.2105.1   GPS week: 2105   Day: 1   MJD: 58980.0

CENT| CLK EPO  |        BRUX       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3072 |    14    13    27 |     9     9    21 |    12    10    35 |
emr | emr 3072 |    22    15    31 |    12    16    40 |    16    15    46 |
esa | esa 3072 |    15    10    25 |    10    13    28 |    11    11    33 |
gfz | gfz 3071 |    14    11    30 |     8    10    27 |    12    11    40 |
grg | grg 2976 |    13    14    33 |     9    12    24 |    13    12    42 |
igr | igr 3072 |    13    11    27 |     9    11    21 |    10    10    35 |
igs | igs 3072 |    12    10    26 |     9    10    21 |    11    10    34 |
jpl | jpl 3072 |    14    10    33 |    12    16    29 |     9    16    38 |
mit | mit 3072 |    13    12    26 |     7     9    25 |    12     9    37 |

Table 5.2105.2   GPS week: 2105   Day: 2   MJD: 58981.0

CENT| CLK EPO  |        BRUX       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3071 |     9     8    31 |    11    18    23 |    10    10    30 |
emr | emr 2976 |    22    20    45 |    14    21    43 |    14    18    50 |
esa | esa 3072 |    10     8    25 |     8    18    24 |    11    13    30 |
gfz | gfz 3072 |    10     9    30 |     8    15    25 |    10    13    38 |
grg | grg 2976 |    11    11    31 |     9    19    29 |    10    10    34 |
igr | igr 3058 |    10     8    33 |     9    15    23 |    10    10    29 |
igs | igs 3072 |    10     8    32 |     8    16    24 |    10    12    31 |
jpl | jpl 3072 |    18    19    60 |    12    21    39 |    13    23    52 |
mit | mit 3072 |    19    13    56 |     9    17    30 |    17    16    53 |

Table 5.2105.3   GPS week: 2105   Day: 3   MJD: 58982.0

CENT| CLK EPO  |        BRUX       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3070 |    10     8    24 |    10    14    23 |     9     8    32 |
emr | emr 3072 |    17    17    35 |    13    18    53 |    11    13    36 |
esa | esa 3072 |    12     9    23 |     9    16    33 |     9    10    27 |
gfz | gfz 3072 |    11     8    28 |     6    13    29 |    10    10    33 |
grg | grg 2975 |    13    12    26 |    11    19    40 |     9     6    32 |
igr | igr 3072 |    11     7    24 |     9    15    29 |     8     8    29 |
igs | igs 3072 |    10     7    22 |     9    14    30 |     7     8    28 |
jpl | jpl 3072 |    14    12    33 |    12    19    39 |     8    14    38 |
mit | mit 3072 |    28    26    25 |    10    14    27 |    12    14    37 |

Table 5.2105.4   GPS week: 2105   Day: 4   MJD: 58983.0

CENT| CLK EPO  |        BRUX       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 2976 |     8     8    24 |    10    17    28 |    14    11    32 |
emr | emr 2880 |    17    15    36 |    15    16    67 |    14    18    59 |
esa | esa 2976 |     9     7    23 |    11    20    39 |    13    12    25 |
gfz | gfz 3043 |     8     7    26 |     6    17    35 |    13     9    27 |
grg | grg 2880 |    12    12    28 |    10    18    41 |    15     8    35 |
igr | igr 2976 |    10     9    26 |    10    18    33 |    14    13    37 |
igs | igs 2976 |     8     6    22 |     9    16    35 |    13     9    27 |
jpl | jpl 2976 |    12    11    32 |    13    21    42 |    13    10    30 |
mit | mit 3072 |    10     7    20 |  ----  ----  ---- |  ----  ----  ---- |

Table 5.2105.5   GPS week: 2105   Day: 5   MJD: 58984.0

CENT| CLK EPO  |        BRUX       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3072 |    32    10    72 |    10    14    30 |    11     8    30 |
emr | emr 3072 |    15    10    33 |    13    17    48 |    15    12    37 |
esa | esa 3072 |     9     8    19 |    10    15    36 |    12    11    28 |
gfz | gfz 2976 |    21    65    30 |     8    13    34 |    11     8    28 |
grg | grg 2975 |    11    12    32 |    17    23    39 |    13     7    32 |
igr | igr 3072 |    33     7    77 |    10    15    32 |    12     9    31 |
igs | igs 3072 |     8     7    21 |    10    13    34 |    11     8    31 |
jpl | jpl 2976 |    24    64    35 |    12    17    43 |    12    11    41 |
mit | mit 3072 |    36    14    81 |    12    14    37 |    38    18    70 |

Table 5.2105.6   GPS week: 2105   Day: 6   MJD: 58985.0

CENT| CLK EPO  |        BRUX       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3072 |     9    10    21 |     7    16    25 |    11     9    34 |
emr | emr 3072 |    15    13    33 |    11    18    39 |    12     9    35 |
esa | esa 3072 |    10    10    23 |     8    18    30 |    11    10    29 |
gfz | gfz 3072 |     8     8    26 |     7    17    36 |    12    10    35 |
grg | grg 2976 |    10    11    30 |     9    15    35 |    13     8    33 |
igr | igr 3072 |     8     8    22 |     7    16    27 |    12     9    32 |
igs | igs 3072 |     9     7    24 |     7    15    28 |    11     8    32 |
jpl | jpl 3072 |    11    10    33 |     9    21    34 |    13    15    41 |
mit | mit 3072 |    30     9    20 |     9    14    30 |    13    13    36 |


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 6.2105   GPS week: 2105   MJD: 58979.500-58985.500

                                                         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     -19     -10     -37      1 |      11     22
            |      18      16     113     116      5 |       3
emr   uuuxu |      12      37     -32     135     16 |      45     52
            |      34      40     137     271     14 |       9
esa   uuuuu |      22      17     149     178     -6 |      14     22
            |      10      13      75      37      2 |       2
gfz   uuuuu |      -9       1      46      23      1 |      22     27
            |      25      34     143     112      6 |       3
grg   uuuuu |       2       6       4    -165     -2 |       6     17
            |      18      22      30      52      6 |       2
igr   xxxxx |      34       9      47     -30      4 |      -6     18
            |      12       9      35      62      4 |       3
irf   xxxxx |      21      -9      -9      13      2 |      -2     20
            |       5      11      23      26      5 |       4
jpl   uuuuu |      16     -14      71     113      6 |      29     39
            |      15      14      38      51     10 |       5
mit   uuuuu |     -18     -10     -38     -43      2 |      24     29
            |      16       8      85      39      4 |       3
ngs   uuuuu |     -13      -3    -143    -118      0 |      12     22
            |      20      34     169      79      3 |       2
sio   uuuux |      33      30     -91      67     13 |      70     72
            |      12      16      74      68      6 |       6


Table 7.2105.0   GPS week: 2105   Day: 0   MJD: 58979.500

                                                         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     -13     -69     -15      6 |       8     20
emr   uuuxu |      13      50    -162     173     21 |      32     39
esa   uuuuu |      25      30     197     102     -8 |      16     24
gfz   uuuuu |      21       9       6     180     -4 |      19     24
grg   uuuuu |      36       0     -30    -143     -6 |       4     16
igr   xxxxx |      42      11      26     -86     -1 |      -8     18
irf   xxxxx |      22     -14      23      24      7 |      -7     21
jpl   uuuuu |       4     -24      89      35     24 |      23     35
mit   uuuuu |     -32       2      73       7      2 |      21     27
ngs   uuuuu |     -27     -43    -145    -213     -3 |      11     22
sio   uuuux |      20      46    -117     181     22 |      61     63

Table 7.2105.1   GPS week: 2105   Day: 1   MJD: 58980.500

                                                         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 |     -21     -13    -236    -254      2 |      10     22
emr   uuuxu |      19      16     -58     225     28 |      36     44
esa   uuuuu |      37      17     116     193     -6 |      16     24
gfz   uuuuu |      18      57     -80     172      7 |      20     25
grg   uuuuu |      -5       4       1    -202     -9 |       6     17
igr   xxxxx |      40      13      94     -53      4 |      -7     18
irf   xxxxx |      18     -16      18      22      8 |      -4     21
jpl   uuuuu |      -5     -20      27     116      5 |      26     38
mit   uuuuu |     -21     -10      59     -44      8 |      22     28
ngs   uuuuu |     -25     -33     113     -57      0 |      12     23
sio   uuuux |      49      10     -50     115     20 |      65     68

Table 7.2105.2   GPS week: 2105   Day: 2   MJD: 58981.500

                                                         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 |       3       2      41      94     -3 |      11     22
emr   uuuxu |      16       8    -125     304     24 |      42     48
esa   uuuuu |       9      34      57     191     -8 |      16     23
gfz   uuuuu |       0      31    -117       9     11 |      21     26
grg   uuuuu |      17      25       9     -83     -2 |       7     17
igr   xxxxx |      40      13      51     -71     -1 |      -7     18
irf   xxxxx |      13     -16       0       9      1 |      -2     21
jpl   uuuuu |       8     -15      27      96      9 |      27     39
mit   uuuuu |     -45     -17      14     -76     -2 |      24     29
ngs   uuuuu |      12     -35      23    -204     -1 |      12     23
sio   uuuux |      16      19     -55     -23      5 |      68     71

Table 7.2105.3   GPS week: 2105   Day: 3   MJD: 58982.500

                                                         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 |     -26     -40      78      16      5 |       8     20
emr   uuuxu |       8     -12      -6     213     32 |      42     49
esa   uuuuu |      33      26      77     165     -5 |      12     19
gfz   uuuuu |      -9      -8     -47     -65      1 |      20     25
grg   uuuuu |      -4      43     -12    -139     -8 |       4     15
igr   xxxxx |      23      13      59     -99      7 |      -9     17
irf   xxxxx |      28      -5     -26     -11      6 |      -5     20
jpl   uuuuu |       8      -6      84     171     11 |      25     37
mit   uuuuu |     -13     -13     -64     -98      3 |      21     26
ngs   uuuuu |      -9      17    -121    -147      3 |       9     18
sio   uuuux |      37      28     -42      86     10 |      67     70

Table 7.2105.4   GPS week: 2105   Day: 4   MJD: 58983.500

                                                         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 |     -15     -34     -10      -2      3 |      12     25
emr   uuuxu |     -59     111     254    -473      1 |      51     59
esa   uuuuu |      19       7     117     186     -4 |      14     22
gfz   uuuuu |     -26     -13     112    -106     -4 |      25     30
grg   uuuuu |     -12     -13      26    -239      3 |       7     18
igr   xxxxx |      40       2      82      10      9 |      -5     20
irf   xxxxx |      17      12     -38     -29      0 |       0     22
jpl   uuuuu |      38     -18     128     114      4 |      29     42
mit   uuuuu |       0      -6    -124     -55      2 |      25     31
ngs   uuuuu |     -11      13    -218      10     -3 |      13     23
sio   uuuux |      40      49    -219      60     16 |      72     76

Table 7.2105.5   GPS week: 2105   Day: 5   MJD: 58984.500

                                                         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 |       3     -30      38      31      0 |      15     24
emr   uuuxu |      34      49     -31     262     -5 |      55     60
esa   uuuuu |      15       5     244     196     -5 |      15     22
gfz   uuuuu |     -19     -33     197      12     -4 |      26     30
grg   uuuuu |     -11     -20      55    -201      4 |       8     17
igr   xxxxx |      12      21      -6      25      7 |      -3     16
irf   xxxxx |      19      -5     -26      24     -3 |       3     18
jpl   uuuuu |      27      14      49      79     -6 |      36     40
mit   uuuuu |      -6      -2    -107     -42      2 |      27     32
ngs   uuuuu |     -43      10    -276     -95      1 |      15     23
sio   uuuux |      32      45    -150      39     10 |      76     78

Table 7.2105.6   GPS week: 2105   Day: 6   MJD: 58985.500

                                                         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 |     -49      -3      86    -127     -6 |      15     24
emr   uuuxu |      49      38     -95     243     10 |      56     61
esa   uuuuu |      17       4     233     214     -4 |      13     22
gfz   uuuuu |     -48     -34     253     -41      2 |      25     30
grg   uuuuu |      -7       6     -22    -146      4 |       8     17
igr   xxxxx |      39      -6      24      60      5 |      -2     16
irf   xxxxx |      26     -18     -15      51     -5 |       3     18
jpl   uuuuu |      28     -29      92     181     -6 |      35     40
mit   uuuuu |      -9     -22    -117       8     -2 |      28     32
ngs   uuuuu |      12      48    -377    -121      3 |      15     23
sio   uuuux |      35      17      -5      12      9 |      78     80


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