[IGSREPORT-23123] Wk 1815 IGS Final Orbits

IGS ACC igs.acc at noaa.gov
Thu Nov 6 12:30:25 PST 2014


Author:  AC Coordinator / NOAA NGS

sum-file Version 2.0
Final IGS Orbit Combination - Week 1815   (Oct 19, 2014 - Oct 25, 2014)

Contacts: igs.acc at noaa.gov


COMBINATION STRATEGY:
---------------------

Starting with GPS week 860, the IGS Final orbit combination is done directly
in the ITRF without any alignment to the Bulletin B EOP series.

Each centre satellite clock corrections are first transformed to a common 
reference. One of the following two methods can be used (the REMARKS section of
this report gives which method is used):
[1] For each centre, a clock offset and a drift are estimated with respect to
    the broadcast clock corrections using only non-SA satellites;
[2] A chosen reference centre is aligned to the broadcast clock corrections
    using all satellites. All other centres are then aligned to that reference
    centre. 
The offsets and drifts are used to align each centre satellite clock
corrections to GPS time. Ephemerides and clock corrections are then combined
as weighted averages computed over all centres. Each centre is given a
position weight and a clock weight. The position weights are computed from
each centre's absolute deviation to the unweighted average orbit after the
estimation of a 7-parameter Helmert transformation. The clock weights are
either computed from [1] the absolute deviation of the initial alignment to
broadcast clock for the non-SA satellites, or [2] from the absolute deviation
of centre's aligned clock corrections with respect to the unweighted mean.
Finally, a 7-parameter Helmert transformation and clock offset and drift are
estimated for each centre with respect to the combined solutions and parameters
and RMS of fit reported. All the above estimations are performed using the
L1-norm robust scheme.

  Each centre ephemerides are also evaluated individually and independently from
the orbit combination by using week long arcs. The Earth Orientation Parameters
(EOP) used in this evaluation are those submitted by the respective centres.
The IGS combined orbits/clocks and all centres providing both orbit and clock 
solutions are further evaluated by an independent point positioning (navigation)
program that uses both phase and pseudorange data at each SP3 epoch. This is
primarily intended for testing clock solution precision as well as the
orbit/clock consistency.

 Like the clock solutions broadcast in the navigation message, the combined
satellite clocks are corrected for the periodical relativistic correction (see
e.g. GPS interface Control document ICD-GPS-200, p.73):

                              -2*(X.V)/c  [distance unit],

where X and V are the inertial sv state and velocity vectors and c is the speed
of light. Also for compatibility with broadcast GPS time, the IGS clocks use
the linear combination of phase-smoothed P1 and P2 pseudorange data to remove
the 1st order ionospheric delay, with no other delay calibrations applied.


SOFTWARE:
---------

The weighted average software used was originally developed by T. Springer
and G. Beutler in 1993. The GPS long arc orbit analysis software used here for
individual centre ephemeris evaluation was developed by Beutler et al. at the
Astronomical Institute of the University of Bern (AIUB). For more details on
the orbit combination and complete references for both software see:

  Beutler G., Kouba J. and T. Springer, 1995, Combining the orbits of the IGS 
  Analysis Centers, Bulletin Geodesique, 69, pp 200-222.

  Kouba J., Mireault Y. and F. Lahaye, 1995, 1994 IGS Orbit/Clock Combination
  and Evaluation, Appendix I of the Analysis Coordinator Report, International
  GPS Service for Geodynamics (IGS) 1994 Annual Report, pp. 70-94.

  Kouba J. and Y. Mireault, 1996, IGS Analysis Coordinator Report, 
  International GPS Service for Geodynamics (IGS) 1995 Annual Report, 
  pp. 45-76.

  Kouba J. and Y. Mireault, 1997, Analysis Coordinator Report, 
  International GPS Service for Geodynamics (IGS) 1996 Annual Report, 
  pp. 55-100.


PRODUCTS GENERATED:
-------------------

The resulting average ephemeris and clocks are output to daily files in SP3
format. The satellite accuracy codes displayed in the header are based on the
weighted RMS for each satellite over each daily arc. Note that each file
contains all the satellites that appear in any of the centre ephemeris files.
If a satellite or centre was excluded from combination, a note in the REMARKS
section of this report will identify the exclusion and the reason.

The resulting x and y earth rotation parameters (ERP) associated with the IGS
ephemeris files and their rates (xrt, yrt) are computed using a weighted average
of all available centres (as part of the separate SINEX combination since GPS
week 1051; weighted according to the orbit combination before that time). 

Starting with GPS wk 0894, IGS LOD combinations were implemented in the 
Final IGS solutions. AC LOD biases with respect to Bulletin A are estimated
using Bulletin A most recent 10 days, i.e. up to 5 days prior to the last
non-predicted day of Bulletin A. AC LOD biases are removed and the new AC
bias-free LODs are used to compute a weighted IGS LOD which in turn is
integrated into IGS UT1-UTC. The starting UT1-UTC value is chosen as Bulletin
A fifth day prior to its last non-predicted day. Both IGS LOD and UT1-UTC
values are printed in the IGS Final erp file.



The Final Orbit files generated and uploaded into CDDIS @ NASA/GSFC are:

igs1815[0-6].sp3  IGS GPS ephemeris files in SP3 format.
igs1815[0-6].clk  IGS GPS satellite and station clocks in clock RINEX format.
igs1815[0-6].cls  IGS GPS clock combination summary report.
igs18157.erp      Earth Rotation Parameters (ERP) and their rates as well as
                  Universal Time (UT1-UTC) and Length Of Day (LOD) associated 
                  with IGS ephemerides.
igs18157.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   | 3 32 3 10 32 STJO
                0  |  EMR   | YELL
                0  |  ESA   | 3 32 3 10 32
                0  |  GFZ   | 1 2 6 30 32 1 6 10 30 32 HOB2 DAV1 HOB2 INVK IRKJ
                0  |  GFZ   | MAW1 STJO
                0  |  GRG   | 3 NYA1 NYA1 STJO ZAMB
                0  |  JPL   | 3 24 29 ZAMB
                0  |  MIT   | 3 3 MDVJ
                1  |  COD   | 10
                1  |  EMR   | 32 FAIR MCM4 FAIR MCM4
                1  |  ESA   | 10 HERS
                1  |  GFZ   | 1 2 6 9 30 1 6 10 30 FAIR WHIT FAIR MAC1 NRIL REUN
                1  |  GFZ   | SYOG WHIT
                1  |  GRG   | 32 FAIR GLPS MAC1 REUN REYK ADIS FAIR GLPS GRAZ MAC1
                1  |  GRG   | REUN REYK SOFI
                1  |  JPL   | 32
                1  |  MIT   | 32 SYOG HYDE SYOG
                2  |  COD   | 10 32 10 32
                2  |  EMR   | THTI
                2  |  ESA   | 1 2 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20
                2  |  ESA   | 21 22 23 24 25 26 27 28 29 30 31 32 1 2 4 5 6 7 8
                2  |  ESA   | 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25
                2  |  ESA   | 26 27 28 29 30 31 32
                2  |  GFZ   | 1 2 6 9 10 30 32 1 6 10 30 32 HYDE NRIL YELL HOB2
                2  |  GFZ   | HYDE NRIL YELL
                2  |  GRG   | MONP PDEL THTI GRAZ HOB2 MONP PDEL THTI
                2  |  MIT   | 25 25 MDVJ
                3  |  COD   | 10 BRAZ HYDE
                3  |  EMR   | 25 32 25 32 YELL
                3  |  ESA   | 10 BJFS CHUR BJFS CHUR UNSA
                3  |  GFZ   | 1 2 6 30 1 2 6 10 30 YIBL MAC1 TRO1 YELL YIBL
                3  |  GRG   | 32 32 GRAZ HYDE NOVM WES2 GRAZ HYDE NOVM WES2
                3  |  JPL   | 32 TIXI YELL
                3  |  MIT   | 32 MAW1 MAW1 MDVJ
                4  |  ALL   | 12
                4  |  COD   | HOB2 DAV1
                4  |  EMR   | 32 WES2
                4  |  ESA   | BJFS BRAZ HOB2 YELL BJFS BRAZ UNSA
                4  |  GFZ   | 1 2 6 30 1 6 30 BRAZ FAIR MDVJ NRIL WTZR BRAZ FAIR
                4  |  GFZ   | INVK MDVJ NRIL WES2 YIBL
                4  |  GRG   | 10 12 13 32 10 13 22 HOB2 MCM4 WES2 WTZR DAV1 WES2
                4  |  JPL   | 8 32
                4  |  MIT   | 32 BAKO HOB2 BAKO
                5  |  COD   | ZECK
                5  |  EMR   | CRO1 MCM4 CRO1 MCM4 SYOG THU3
                5  |  ESA   | 32 32 TLSE REUN
                5  |  GFZ   | 1 2 6 30 32 1 6 30 32 FAIR TLSE TRO1 ZECK FAIR INVK
                5  |  GFZ   | RECF REUN TRO1 YELL ZECK
                5  |  GRG   | KOUC REUN SPT0 TLSE WES2 XMIS ZIMM DAV1 HYDE KOUC
                5  |  GRG   | REUN SPT0 WES2 XMIS ZIMM
                5  |  JPL   | 32 INVK
                5  |  MIT   | 26 DAV1 FAIR FAIR MDVJ REUN
                6  |  COD   | 12 32 12 32 NRIL
                6  |  EMR   | TSKB
                6  |  ESA   | 32 CORD CORD DAV1 KOUC
                6  |  GFZ   | 1 6 30 32 1 6 30 BAKE HOLM INVK
                6  |  GRG   | 13 13 DAV1 GLSV GRAZ NRIL GLSV GRAZ NRIL
                6  |  JPL   | 32
                6  |  MIT   | MDVJ

    
 5. New clock offsets and drifts were estimated for centres showing reference
    clock resets. Note that only the largest clock offset and drift are output
    to the summary file. However, the clock combination and the listed RMS
    include all the clock segments. In summary, the following clock
    shifts/resets were noticed and accounted for:
    
               Day | Centre |  Time  |  Jump
               ----+--------+--------+-------------
                3  |  MIT   | ~00:00 | ~ 0.37 ns

 6. 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.

 7. The following orbit solutions were excluded from the combination because they
    were biasing the weighted average (generally indicated by long arc RMS). They
    were still used for statistics computation.
    
               Day | Centre | PRN list
               ----+--------+---------------
                0  |  GRG   |   3
                1  |  GRG   |   3
                4  |  COD   |  12
                4  |  ESA   |  12
                4  |  GRG   |  12

 8. Velocity changes were estimated to alleviate the effects of modeling problems,
    experienced by all centres,in the Long Arc (LA) process.
    
             Velocity changes per day and affected satellites:
    
               Day |  0 |  1 |  2 |  3 |  4 |  5 |  6 |
           --------+----+----+----+----+----+----+----+
           PRN G09 |    |    |    |  4 |    |    |    |
           PRN G10 |    |    |    |  4 |    |    |    |
           PRN G12 |  4 |  4 |  4 |  4 |  4 |  4 |  4 |
           PRN G32 |  4 |  4 |    |  4 |  4 |  4 |  4 |

 9. 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.

10. 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 |    -.9     .0   -1.2     -62      9    -19     .36
       EMR  |   0 |    3.0    6.2    1.2       2     24     15     .14
       ESA  |   0 |     .2    -.3   -2.0       2     -2     58    -.0 
       GFZ  |   0 |     .1     .6   -2.3       5    -32     10     .51
       GRG  |   0 |    2.1    -.5   -2.5     -13     25     -2     .70
       JPL  |   0 |    4.7    9.9    8.4    -110     47    -12     .13
       MIT  |   0 |   -4.7    3.8   -2.1       0      4    -31     .32
       NGS  |   0 |   -4.9    -.5   13.5     -31    -16    -18     .31
       SIO  |   0 |    3.1    2.4   -8.9      -9      5     10     .27

       COD  |   1 |   -1.1     .4    -.5     -51     26      9     .38
       EMR  |   1 |    1.1    3.1   -4.5      -4     22     25     .05
       ESA  |   1 |    -.5     .3   -1.9      -2    -21     54    -.21
       GFZ  |   1 |     .1     .2   -2.7      13    -46     26     .52
       GRG  |   1 |    1.6    8.7   -1.3     -29     45      6     .55
       JPL  |   1 |    5.9    3.4    5.5     -42     14     -1     .19
       MIT  |   1 |   -3.4    6.2   -5.2       8      4    -19     .29
       NGS  |   1 |   -3.6   -2.2    -.9      18     13    -19     .57
       SIO  |   1 |     .5    -.7   -5.0     -10     19      4     .12

       COD  |   2 |    -.6    -.1    -.1     -58      2     -5     .20
       EMR  |   2 |     .3   -4.8    4.0       6     22     26     .16
       ESA  |   2 |    -.3    -.1   -1.3       1    -16     54    -.20
       GFZ  |   2 |    -.2     .8   -1.7     -10    -35     25     .06
       GRG  |   2 |    1.1    8.7   10.0     -23     25      7     .37
       JPL  |   2 |    8.5    5.5    7.1     -84      7     37     .29
       MIT  |   2 |    -.5    5.6   -2.0       7      4    -34     .17
       NGS  |   2 |    9.1   -2.5    9.3     -10    -49     50     .34
       SIO  |   2 |    1.5    3.4   -4.6     -11     -7      6     .09

       COD  |   3 |   -1.5    -.4    -.6     -62     17      0     .30
       EMR  |   3 |    3.6    3.9    2.1     -11     22    -12     .24
       ESA  |   3 |    -.4     .3   -2.1       5    -14     52    -.08
       GFZ  |   3 |     .3     .4   -1.5      -7    -36     35     .12
       GRG  |   3 |    5.9    9.0   -1.6     -20     47     -3     .66
       JPL  |   3 |    6.8    6.9    9.5     -77    -11     29     .28
       MIT  |   3 |    4.0    3.2   -2.8       6      0    -28     .29
       NGS  |   3 |    9.7     .6     .2      32    -34     59     .57
       SIO  |   3 |    6.3    4.3   -3.5      -4      4     17     .25

       COD  |   4 |   -1.8    -.3   -1.1     -69     -6     19     .28
       EMR  |   4 |   -2.0    1.3    8.3     -11     12     14    -.16
       ESA  |   4 |    -.3     .2   -1.6      -1    -22     50    -.04
       GFZ  |   4 |    -.5     .4   -1.2       9    -35     22    -.0 
       GRG  |   4 |    5.4   11.4   -3.8      -8     22     10     .63
       JPL  |   4 |   -1.1    3.2    9.4     -93     13     -9    -.34
       MIT  |   4 |    1.7    7.2    4.0      11      1    -26     .24
       NGS  |   4 |   -2.7   -1.4   10.9     -21     -7    -14     .63
       SIO  |   4 |    6.9    6.4    1.8     -10     -9     17     .13

       COD  |   5 |   -1.9    -.4   -1.0     -49      7    -10     .29
       EMR  |   5 |    -.3    5.4    8.9      -3     16      6    -.05
       ESA  |   5 |     .0    -.3   -1.8      -2    -25     47     .32
       GFZ  |   5 |    -.3    -.1   -2.3       1    -24     25     .46
       GRG  |   5 |    3.5    9.3   -2.7     -26     25     14     .51
       JPL  |   5 |    -.7    4.0   12.1    -100    -19      8     .32
       MIT  |   5 |    1.5    7.5    2.8      11      9    -33     .32
       NGS  |   5 |    6.7   -1.0    7.9     -21    -31     32     .58
       SIO  |   5 |    5.4    1.9    2.6      -9     -3      9     .34

       COD  |   6 |   -2.0   -1.6   -1.4     -54      9      3     .44
       EMR  |   6 |   -2.1    4.7   14.6      -4     12      6     .0 
       ESA  |   6 |     .0     .1   -1.4       6    -13     32     .08
       GFZ  |   6 |    -.4    -.9   -2.5       7    -20      7     .64
       GRG  |   6 |    6.0   12.7   -8.8     -14     36      3     .60
       JPL  |   6 |    5.0    6.8   12.7     -65     42    -17    -.07
       MIT  |   6 |     .8    9.0    2.7      13      6    -35     .21
       NGS  |   6 |   -5.4    2.2    7.3      -3     13    -27     .58
       SIO  |   6 |    4.1    5.6   12.5       6      7     12     .26


11. 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.

12. Starting 5-Nov-2006 (GPS Week 1400, day 0, MJD 54044) until 16-Apr-2011 (GPS
    Week 1631, day 6, MJD 55667) the absolute antenna model is introduced (IGSMAIL
    #5438). The antenna phase center offsets and phase center variations are given
    in the file:
        ftp://igs.org/igscb/station/general/igs05.atx
    These antenna calibrations are also used in the homogeneously reprocessed IGS
    products from GPS Weeks 730 to 1459 (1994-2007); see IGSMAIL #6136.
    
    Starting 17-Apr-2011 (GPS Week 1632, day 0, MJD 55668) the absolute antenna
    model is updated (IGSMAIL #6255 & #6374) as given in the file:
        ftp://igs.org/igscb/station/general/igs08.atx
    
    The JPL solution did not use IGS08/igs08.atx until GPS Week 1649, which caused
    their RMS clock residuals to be higher during that period than for the other
    centres; from GPS Week 1632 through 1648 the JPL solution is excluded from the
    weekly SINEX combination.


ORBIT COMBINATION AND EVALUATION STATISTICS:                                    
--------------------------------------------                                    

Most combination statistics are with respect to the combined orbits and
consist of seven parts. The first, Table 1, summarizes all statistics for
the week. It contains means and standard deviations over the week of
satellite ephemeris and clock correction transformation parameters for
each centre (Table 1.1815.a). It also displays the computed satellite
position sigmas for the combined orbits (Table 1.1815.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 2.1815.[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 3.1815.[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 5.1815.0-6). 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 1815 summary.                       (Oct 19, 2014 - Oct 25, 2014)

Table 1.1815.a   GPS week: 1815   MJD: 56949.000-56955.000

         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  248|    1     0     2    19    30     7   .08   10    9 |    -870    -322     15    105
        |    0     0     1    22    20    15   .03           |     115     192
emr   80|    0     0     1   -13    -6    30   .33   13   13 |    4032      17     15    152
        |    1     1     1    11    14    15   .02           |     743     988
esa  149|    1     0     2    15    -9    -4  -.32   13   13 |  -50580    -311     15    171
        |    0     0     0    17    20    13   .03           |  131007    1730
gfz  187|    0     0     3    23   -24   -19  -.11   14   13 |    -121     322     13    161
        |    1     1     1    15    16    11   .04           |     296     699
grg  173|    0     0    -2    -1     7   -21   .31   15   14 |     -90     235     15    142
        |    0     1     1    13    16    19   .02           |     175     384
igr  n/a|    0     0     0     8    11   -16  -.20    6    5 |    3590      -2     16     92
        |    0     0     1    10    14    10   .02           |     708     862
jpl   80|    1     0    -1   -30     4    11   .09   13   13 |    2873     -21     17    126
        |    0     1     1    17    12    16   .02           |     548     859
mit  350|   -1     0    -1   -15   -16    -9  -.06   12   10 |    -189      47     20    180
        |    0     0     0    22    34    13   .02           |     166     366
ngs  227|   -1     0     0   -18   -11   -10   .05   12   11 |    -882    -288   1372   3010
        |    1     0     3    35    47    24   .04           |     166     311
sio  472|   -1     0    -3     6     2     4  -.51   14   13 |     ---     ---    ---    ---
        |    0     0     1    26    23    20   .03           |     ---     ---


Table 1.1815.b   GPS week : 1815   MJD: 56949.000-56955.000   

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



Table 2: Daily transformation of each centre to the combined IGS orbit and
         clocks for each day of the week. The transformation displayed is the
         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 2.1815.0   GPS week: 1815   Day: 0   MJD: 56949.000                            

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|    1     0     0    53    34    11   .13   10   10 |    -845    -170     13    102
emr   80|    2     1     0   -18   -20    10   .32   14   14 |    3063     903     13    141
esa  150|    1     0     1    16    -3     4  -.27   13   13 |   -1424    2113     10    159
gfz  192|    0     1     3    31   -36    -3  -.06   13   12 |    -126     559     15    168
grg  174|    0     0     0     1    18   -40   .29   16   15 |    -177     778     17    127
igr  n/a|    0     0     0    15     7    -6  -.20    6    5 |    2990     479     16    104
jpl   80|    1     0    -3   -58    10    -2   .08   14   13 |    2600     511     17    119
mit  350|   -1     0    -1    -6     0     2  -.08   12   10 |     -29    -189     19    184
ngs  230|   -3     0     4   -56   -29    -5  -.02   15   13 |   -1110     234   1866   3353
sio  477|    0     0    -4    -4     4    -1  -.53   14   12 |     ---     ---    ---    ---

Table 2.1815.1   GPS week: 1815   Day: 1   MJD: 56950.000                            

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  248|    0     0     0    15     7    17   .10   11   10 |    -915    -430     16    112
emr   80|    0     0     1   -23   -11    33   .31   14   14 |    3054    1407     16    167
esa  150|    1     0     2    -5    -8    -6  -.29   13   13 |   -2133   -1451     11    163
gfz  184|    0     1     4    39   -12   -24  -.13   14   14 |    -320     465     13    179
grg  173|    1    -1    -3     8     5   -17   .30   14   14 |    -204     148     16    159
igr  n/a|    0     0     1     0    22   -24  -.22    6    5 |    2512    1212     17    109
jpl   80|    0     2     0    -6     6   -12   .10   13   13 |    2005    1094     18    157
mit  350|   -1     0     0   -32    -4   -18  -.08   13   12 |    -303     130     21    180
ngs  228|   -1     0    -5    -3    -7     0   .06   13   11 |    -857    -430   1369   2989
sio  467|   -1     0    -1     0    10     8  -.48   15   14 |     ---     ---    ---    ---

Table 2.1815.2   GPS week: 1815   Day: 2   MJD: 56951.000                            

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     4    19     5    24   .08   10   10 |   -1055    -279     15     86
emr   80|    0    -2     0    -8     8    21   .34   14   14 |    5050   -1158     14    123
esa  150|    0     0     2     1   -29    -5  -.34   13   13 | -347668   -2716     43    244
gfz  189|    0    -1     2    34   -47   -21  -.12   14   14 |      35    -613     15    178
grg  174|    1     0     0     2    26   -27   .33   15   14 |     112    -282     13    152
igr  n/a|    0     0     0     2    -4   -25  -.20    6    6 |    4288    -727     16    105
jpl   80|    2     0     0   -24    -2     1   .11   13   13 |    3149    -482     18     99
mit  350|   -2     0    -2   -18    27   -23  -.06   12   10 |       6    -320     19    177
ngs  227|   -1     0     0   -24   -40     5   .03   11   10 |   -1032    -324   1428   2907
sio  471|    0     0    -4    10    38     3  -.49   14   14 |     ---     ---    ---    ---

Table 2.1815.3   GPS week: 1815   Day: 3   MJD: 56952.000                            

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|    1     0     3    -2    52    -2   .05    9    8 |    -680    -706     16    104
emr   80|   -1     0     1   -20    15    51   .36   14   14 |    4319     651     15    134
esa  149|    1     0     2    -1    29    10  -.32   13   14 |   -1148    1540     10    146
gfz  183|    0     0     4     7    -9   -30  -.10   14   12 |    -385    1028     13    129
grg  176|    0     0     0   -21    -2   -10   .34   14   13 |    -317     416     15    138
igr  n/a|    0    -1     0     1    12   -26  -.17    5    5 |    3963     767     15     97
jpl   80|    1    -1    -1   -19   -12    18   .06   14   13 |    3151     863     16    124
mit  350|   -1     0    -2     4   -51     0  -.07   12   11 |    -429     397     21    172
ngs  230|    0     0    -4     7   -39   -32   .07   11   10 |    -583    -787   1594   3399
sio  474|   -2     0    -3    22   -37    -7  -.51   14   12 |     ---     ---    ---    ---

Table 2.1815.4   GPS week: 1815   Day: 4   MJD: 56953.000                            

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|    2     0     1    44    44    18   .04   10   10 |    -922    -249     17    114
emr   80|   -2    -2     3     6   -14    52   .36   13   13 |    4336    -187     16    160
esa  150|    2     0     2    23   -19    -6  -.34   14   14 |   -2206    -690     12    172
gfz  191|   -2     0     2    30   -36   -19  -.16   14   14 |     -57     -46     14    164
grg  175|    0     2    -2   -12   -22    12   .31   15   14 |     -89     196     16    142
igr  n/a|    0     0     0     0    19   -17  -.19    6    6 |    4157    -304     17     81
jpl   80|    1     0    -3   -39    11    16   .13   13   12 |    3382    -388     18    129
mit  350|    0     0    -1   -50    16    -8  -.08   12   10 |    -333     539     20    146
ngs  226|   -1    -1     2    16   -27   -52   .09   12   10 |    -887    -188   1092   2697
sio  480|   -2     0    -3   -33     6   -12  -.46   14   12 |     ---     ---    ---    ---

Table 2.1815.5   GPS week: 1815   Day: 5   MJD: 56954.000                            

CENT STA|   DX    DY    DZ    RX    RY    RZ   SCL  RMS  WRMS|    TOFT   TDRFT   SDEV    RMS
        |  [mm]  [mm]  [mm] [uas] [uas] [uas] [ppb] [mm] [mm]|    [ps]  [ps/d]   [ps]   [ps]
--------+----------------------------------------------------+------------------------------
cod  246|    0    -1     1    -2    52     7   .08    9    9 |    -804    -273     15    107
emr   80|    0     2     1    -5    -1    22   .32   13   13 |    4474   -1022     15    161
esa  150|    1     0     2    32    -2     1  -.35   13   13 |     690   -1315     10    155
gfz  187|   -1     0     4    -2    -2    -5  -.05   15   13 |     425    -380     11    152
grg  173|    1     0    -5    17    20   -18   .33   15   13 |     173    -178     15    138
igr  n/a|   -1     0    -1    25    32   -14  -.20    6    5 |    4132   -1228     20     82
jpl   80|    1     0     0   -41    -5    25   .08   14   13 |    3443   -1274     17    133
mit  350|    0     0     0    16   -44   -25  -.05   12    9 |    -146     199     21    212
ngs  223|    0     0     0   -75   -26   -13   .06   12   11 |    -842    -378   1223   3098
sio  471|   -2     0    -4    52   -17    -8  -.55   15   14 |     ---     ---    ---    ---

Table 2.1815.6   GPS week: 1815   Day: 6   MJD: 56955.000                            

CENT STA|   DX    DY    DZ    RX    RY    RZ   SCL  RMS  WRMS|    TOFT   TDRFT   SDEV    RMS
        |  [mm]  [mm]  [mm] [uas] [uas] [uas] [ppb] [mm] [mm]|    [ps]  [ps/d]   [ps]   [ps]
--------+----------------------------------------------------+------------------------------
cod  244|    2    -1     3     7    13   -22   .08   10    9 |    -874    -148     16    112
emr   80|    0     0     1   -22   -23    25   .32   13   13 |    3929    -474     19    178
esa  150|    0     1     2    39   -29   -32  -.32   12   13 |    -176     339     11    158
gfz  188|    0     0     5    20   -28   -30  -.14   14   11 |    -423    1247     14    159
grg  172|    1     1    -3    -5     7   -46   .31   15   13 |    -132     567     16    144
igr  n/a|   -1     0    -1    16    -9     1  -.20    5    5 |    3094    -214     16     69
jpl   80|    0    -2    -3   -24    25    35   .11   13   12 |    2386    -472     19    126
mit  350|    0     0    -1   -22   -57     8  -.02   13   11 |     -94    -423     22    191
ngs  225|    0     0    -1     6    93    22   .03   13   12 |    -866    -143   1035   2628
sio  468|   -2     1    -5     1    12    46  -.50   14   15 |     ---     ---    ---    ---

       
       
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 3.1815.0   GPS week: 1815   Day: 0   MJD: 56949.000                            

        Weighted Average                                            Orbit Dynamics (7 days)
 PRN  |  cod  emr  esa  gfz  grg  igr  jpl  mit  ngs  sio  IGS |   cod  emr  esa  gfz  grg  igr  jpl  mit  ngs  sio   IGS
------+--------------------------------------------------------+---------------------------------------------------------
   1  |    9    9   13    6   14    3   13    8   13   11    3 |    51   58   55   52   55   50   57   51   51   51    52
   2  |   10   11   15   12   12    5   10   16   14   19    4 |    34   38   32   30   35   31   35   33   35   31    32
  X3  |   59   22   22   21 2062   20   19   24   57  ---   15 |   ---  ---  ---  ---  ---  ---  ---  ---  ---  ---     0
   4  |    8    9   11    8   11    3    9   10   13   11    3 |    30   29   27   23   26   24   28   25   26   21    25
   5E |    9   13    9   15   14    4   17   12   17   12    4 |    56   58   56   57   59   56   56   56   61   55    56
   6  |    8    9   13    9   11    5   15   15   11    8    4 |    64   63   62   60   61   61   63   59   62   63    61
   7  |    9   15   13   14   17    5   12   10   10   13    4 |    44   48   40   46   48   42   44   41   43   41    42
   8  |    9    7   11   11   16    6   11   12    8   26    4 |    35   40   34   33   32   32   37   31   35   44    34
   9  |   18   15   11   21   16   13   15   22   15   26    6 |    90   92   87   96   94   92   93   95   91   93    91
  10E |   13   19   13   14   14    6   19    9   13   11    5 |   136  136  134  136  136  135  136  135  134  137   135
  11  |    8   12   14    9   15    4    9   10   17   11    4 |    39   42   33   35   46   34   41   36   34   34    36
  12E |    8   18    7   14   28    4   17   13   11   11    5 |   463  304  461  306  459  397  464  307  258  306   459
  13  |    7   13   16   15   23    6   14   11   12   12    5 |    53   56   48   63   65   53   53   55   52   48    53
  14  |   11   14   13   12   15    6   14   12   12   15    4 |    52   52   46   54   55   47   49   52   48   43    49
  15  |    9   15   13   11   17    4   15   12   21   13    5 |    41   41   36   46   48   37   39   47   42   34    39
  16E |    8   19    8   13   18    7   16   11   18   13    5 |    63   63   61   67   67   61   62   68   64   67    64
  17  |   10   15   15   14   12    4   15   12   15   17    5 |    54   53   49   57   59   54   53   58   52   52    53
  18E |   10   11    6   14   15    4   10    9   13   12    4 |    65   65   63   61   67   61   66   61   66   62    63
  19  |   12   15   13   14   14    4   12   14   19   15    5 |    50   49   46   53   50   47   47   48   45   49    47
  20E |   10   12    8   11   14    5    8    8   11   13    3 |    46   45   45   46   41   43   45   43   39   48    43
  21  |   11   13   14   13   12    6   14    8   22   18    5 |    28   34   29   29   30   25   33   25   33   27    27
  22E |    8   13    8   10   11    5    8   10   10    8    3 |    53   55   52   49   54   50   53   54   53   47    51
  23  |   10   15   15   14   19    6   14   19   11   17    5 |    58   56   50   64   62   54   54   63   55   50    55
  24  |    7   11   13    7   13    5   13    8   14   12    4 |    45   49   45   43   47   44   47   44   49   40    44
  25E |    7   11   16   10   20    4   16   10   18   10    4 |    80   83   83   76   84   78   68   80   79   81    79
  26  |    9   13   15   11   11    3   12    9   15   13    4 |    40   45   38   46   45   42   43   45   43   41    41
  27  |   10   10   13   13   14    7   12    7   15   15    4 |    43   46   43   48   54   45   50   45   47   47    45
  28E |    8   11    8    7   17    6   14    9   16    8    4 |    59   60   57   59   61   56   60   59   64   63    59
  29  |   10   17   14   16   15    9   17   14   12   16    5 |    31   31   27   33   34   26   31   30   29   28    27
  30  |    7   11   13   11   15    5   11    8   13   10    4 |    42   49   46   45   49   43   49   43   44   46    45
  31  |   10   14   14   15   15    5   16   13   14   11    4 |    43   47   42   43   50   41   49   45   43   40    43
  32E |   14   21   14   16   18   10   17   15   17   13    5 |   185  189  184  184  181  182  183  192  183  179   185
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |   10   14   13   13   16    6   14   12   15   14      |T   70   66   68   65   72   65   70   65   63   63    68
 WRMS |   10   14   13   12   15    5   13   10   13   12      |NE  42   44   39   45   48   40   43   43   42   40    41
 MEDI |    9   13   13   13   15    5   14   11   14   13      |MD  51   52   46   52   54   47   50   51   49   48    49

Table 3.1815.1   GPS week: 1815   Day: 1   MJD: 56950.000                            

        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   10   12    9   10    3   11   11   11   10    3 |    29   37   31   29   36   28   39   29   29   30    31
   2  |    9   12   14   15   11    5   10   16   11   18    4 |    25   30   25   27   25   23   27   27   31   22    24
  X3  |    2  ---  ---  --- 2026  144  ---  ---  ---  ---    0 |   ---  ---  ---  ---  ---  ---  ---  ---  ---  ---     0
   4  |    9   10   12    9   10    4    9   13    8   11    3 |    19   20   20   15   19   15   17   19   17   17    16
   5E |   11   15   10   17   16    6   18   15   12   17    5 |    32   37   31   35   31   32   36   30   34   31    30
   6  |    9    8   15   15   12    6   14   14    9   12    4 |    26   31   25   26   30   25   34   23   27   26    25
   7  |   11   15   14   17   16    3   10   10   10   13    4 |    35   36   29   32   37   28   30   29   32   27    30
   8  |    7    9   10   13   14    5    7   11   12   27    4 |    26   29   24   23   23   22   25   21   26   36    24
   9  |   18   15   13   24   14   12   16   22   14   25    6 |    93   96   94   93   92   91   95   97   90   95    93
  10E |   16   21   14   18   14    8   18   11   10   12    5 |   122  119  122  124  120  123  118  124  122  122   121
  11  |    9   11   14   12   15    5   11   10   13   11    4 |    29   34   25   24   39   24   31   25   25   27    26
  12E |   10   17    8   12   15    5   20   15   13    9    5 |   378  217  374  218  373  318  395  214  202  218   371
  13  |   11   13   17   14   23    6   11   12    7   12    5 |    34   39   32   39   47   33   37   35   34   30    34
  14  |   14   15   11   15   14    6   13   16   15   13    5 |    35   35   29   34   36   31   32   32   31   28    30
  15  |    7   15   13   13   17    3   16   13   12   13    4 |    31   33   27   34   35   26   27   36   33   27    29
  16E |   10   18    9   13   15    8   14   13   12   13    4 |    33   35   31   34   39   30   32   35   36   32    32
  17  |   10   16   16   15   12    5   14   12   17   18    5 |    35   37   33   39   40   33   34   36   34   31    33
  18E |   10   12    5   18   15    4   13    8   13   14    4 |    44   42   39   43   45   39   40   39   37   41    40
  19  |   12   15   14   15   16    5   14   14   13   16    5 |    31   33   29   31   35   27   31   29   30   29    28
  20E |   10   10    9   15   15    7    9   15   11   15    4 |    23   24   24   22   27   21   22   19   25   29    21
  21  |   10   11   14   12   14    5   14   12   15   19    4 |    21   27   22   19   24   18   26   19   22   18    19
  22E |    9   11    8   16   12    6   10   14   10   10    4 |    35   34   33   30   36   32   34   33   30   34    32
  23  |    9   16   13   14   19    6   11   18   10   16    5 |    34   42   33   37   42   32   36   37   35   26    33
  24  |    8   11   15    7   11    5   12   11   13   13    4 |    31   37   35   31   35   31   39   34   38   28    32
 X25E |   10   15   17   13   12    7  ---   12   16   14    5 |    75   75   75   68   72   72  ---   71   76   72    72
  26  |    8   13   12   12   14    6   12   10   10   13    4 |    24   30   25   29   27   25   25   29   23   29    25
  27  |   14   11   14   15   12    5   10    7   12   12    4 |    36   37   34   36   42   32   39   32   38   33    35
  28E |    8   11    8   13   13    5   10    9   11    9    3 |    37   37   34   35   37   33   36   35   42   34    35
  29  |   11   19   15   15   14    7   21   19   17   14    5 |    27   30   22   22   27   20   26   26   27   22    21
  30  |    6   11   12   14   12    4   11    9    8   11    3 |    29   34   31   29   35   29   36   29   34   32    31
  31  |   10   15   13   13   14    5   11   16   17   15    5 |    28   37   26   27   39   26   34   30   29   22    28
  32E |   13   19   12   13   16    7   14   16   19   14    5 |   174  177  172  167  170  169  173  177  172  165   172
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |   11   14   13   14   14    6   13   13   13   15      |T   52   50   51   46   55   48   53   46   47   45    50
 WRMS |   10   14   13   14   14    5   13   12   11   14      |NE  30   33   28   30   35   26   31   29   30   27    28
 MEDI |   10   13   13   14   14    5   12   13   12   13      |MD  32   36   31   32   36   30   34   32   33   30    31

Table 3.1815.2   GPS week: 1815   Day: 2   MJD: 56951.000                            

        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   10   14    6   11    3   12   12   10    9    3 |    43   50   45   45   48   43   51   45   43   42    45
   2  |    8   11   14   14   11    5   11   10   11   20    4 |    24   30   26   23   24   22   28   25   27   29    24
   4  |    8   11   12    8   12    4    8   14    7   12    3 |    22   26   24   21   21   20   24   23   20   19    21
   5E |   11   13   10   18   18    4   19   13    9   16    5 |    52   52   51   53   54   49   52   52   56   49    51
   6  |    5    9   14   12   11    5   13   10   12    8    3 |    45   47   46   45   45   44   48   44   47   45    44
   7  |   11   13   14   16   14    4   11    9   10   13    4 |    36   39   33   38   40   33   35   35   33   32    34
   8  |    8    9   10   14   14    5   10    9   10   28    4 |    30   34   31   31   30   29   32   29   32   41    31
   9  |   18   18   13   24   13   13   16   23   15   26    6 |    88   97   88   93   95   89   96   98   91   96    92
  10E |   10   20   14   18   12    7   21    7   11   14    5 |   111  113  115  114  119  114  113  117  117  117   115
  11  |    8   12   14   10   13    4   12   11    9   10    4 |    28   36   29   31   37   28   35   29   28   28    29
  12E |    8   17    8   14   23    6   19   13   12    9    5 |   513  345  515  342  520  465  448  345  325  346   517
  13  |   10   14   16   13   21    6   12   11    8   11    4 |    43   44   37   47   52   41   41   43   40   37    41
  14  |   11   12   12   12   13    5   11   12   11    9    4 |    47   44   41   42   46   41   42   43   42   37    42
  15  |    8   12   11   13   18    4   13   11   11   12    4 |    37   37   35   43   44   33   37   42   35   32    36
  16E |   10   15   10   17   14    8   13   16   10   11    4 |    48   51   48   53   53   49   46   55   51   50    50
  17  |    9   14   15   14   11    6   16   12    8   18    4 |    39   42   38   42   46   40   43   44   44   39    41
  18E |   11   10    7   15   16    6   11    7   15   12    4 |    58   56   56   55   59   51   60   56   58   55    56
  19  |   12   15   15   15   16    5   14   15   11   16    5 |    37   40   37   45   41   37   39   40   36   39    37
  20  |   11   13    8   10   24    4   10   11   13   13    4 |    35   31   32   32   31   28   31   33   27   33    30
  21  |   10   12   14   16   12    5   12    9   14   16    4 |    26   31   25   26   25   21   30   23   26   23    23
  22E |    8    9    8   12   12    4    9    8   10   10    3 |    51   48   49   48   54   47   49   51   51   44    49
  23  |   11   18   14   15   21    6   16   18   12   14    5 |    45   48   40   50   56   43   45   48   46   38    44
  24  |    7   13   17    8   12    6   15   12   12   13    4 |    41   47   41   40   44   39   48   44   42   37    41
  25E |   14   17   17   11   11    7   10   12   13   15    5 |    75   82   77   77   81   77   93   77   80   80    78
  26  |    9   12   14   10   13    5   12    7    9   16    4 |    35   38   35   38   37   33   38   35   31   34    34
  27  |   14    9   14   15   18    9   10    7   11   15    4 |    36   42   38   45   43   40   41   40   40   42    39
  28E |    8   12    7   11   16    5   12    8    9    7    3 |    44   46   44   44   48   42   46   46   44   47    45
  29  |   10   17   15   18   13    7   15   11   16   14    5 |    28   33   25   34   30   26   27   29   32   26    27
  30  |    7   11   13    9   15    6   11    9    8    8    3 |    35   40   38   38   38   35   40   37   34   35    36
  31  |   11   17   13   14   14    6   10   16   10   11    4 |    40   48   39   40   46   37   43   40   39   35    39
  32E |   15   19   12   11   17    6   13   17    7   13    5 |   146  147  142  142  143  140  145  151  143  132   144
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |   10   14   13   14   15    6   13   12   11   14      |T   62   60   61   58   66   59   62   58   56   56    62
 WRMS |   10   14   13   14   14    5   13   10   10   14      |NE  34   38   33   38   39   33   36   36   34   33    34
 MEDI |   10   13   14   14   14    5   12   11   11   13      |MD  41   44   39   44   46   40   43   43   42   39    41

Table 3.1815.3   GPS week: 1815   Day: 3   MJD: 56952.000                            

        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  |    4    8   16    8    9    4   13   11    6    7    3 |    41   47   43   42   44   40   45   42   44   40    42
   2  |    7   13   13   14   13    4   13   10    9   19    4 |    25   29   28   28   27   25   28   26   29   26    25
   4  |    6   10   14    9    9    3    9   16    8   11    3 |    29   29   28   27   25   27   29   31   32   24    27
   5E |    7   13    8   14   17    4   16   11   16   12    4 |    46   42   42   40   48   40   44   41   41   41    41
   6  |    6    7   14   10    9    5   13   10   10    8    3 |    52   51   50   49   50   49   52   46   47   49    48
   7  |    9   13   15   12   12    3   11    8   11   13    4 |    37   37   33   36   38   32   35   32   38   30    33
   8  |    5    9   13   14   16    6   11    8    8   29    4 |    30   34   30   31   28   28   31   28   30   42    30
   9  |   16   18   12   22   21   13   20   19   14   22    6 |   170  177  174  174  169  169  179  175  170  176   173
  10E |   14   24   13   22   14    8   25   13   12   16    6 |   150  155  153  150  151  152  155  152  150  153   151
  11  |    7    9   16   11   12    4   10   11    9   11    3 |    34   38   32   36   40   32   38   36   38   34    34
  12E |    9   19    8   13   13    4   18   11    8    9    4 |   597  389  591  390  588  430  619  392  475  394   593
  13  |    7   14   15   14   20    4   15    9    7   11    4 |    41   42   34   47   50   38   40   39   41   35    39
  14  |    7   14   12   11   14    5   10   12    8    9    3 |    43   43   37   42   42   39   41   42   35   35    39
  15  |    6   12   12   15   17    4   17   10   12   13    4 |    32   30   25   36   38   28   28   32   33   25    29
  16E |    7   19   10   13   17    7   15   13   12   10    4 |    48   46   46   50   50   44   44   54   49   50    48
  17  |    8   14   16   13   11    3   15   10   13   18    4 |    38   40   36   43   45   39   39   46   42   42    39
  18E |    8   11    9   20   17    4   10    7   11   13    4 |    48   45   45   45   46   44   46   43   49   45    45
  19  |   12   17   15   16   18    5   12   13   13   16    5 |    38   40   36   42   35   36   36   39   43   35    36
  20  |    7   12   10   11   21    5   11   10    9   10    4 |    33   35   35   38   33   31   35   35   35   38    33
  21  |    6   15   15   16   11    4   13   12   10   19    4 |    28   34   30   32   27   27   29   29   31   29    27
  22E |    7   12    8   13   10    4    9    9   11   11    3 |    40   39   40   41   40   36   43   37   36   38    38
  23  |   10   16   14   14   16    6   13   16   13   13    5 |    43   46   38   47   50   41   43   45   44   35    41
  24  |    6   13   15    9   14    4   13   10   13   13    4 |    35   39   37   34   37   33   40   34   35   31    34
 X25E |   16   19   17   13   12    4  ---   14   16   10    5 |    92   88   94   84   87   89  ---   86   91   87    88
  26  |    6   12   12   11   12    4   11    8   11   17    4 |    36   34   30   34   35   31   33   34   34   35    33
  27  |   14   10   16   17   13    6    9    9   10   14    4 |    39   41   34   39   45   38   41   40   40   37    38
  28E |    6   13    9   10   17    4   14    9    9    8    3 |    40   42   40   41   43   40   40   42   46   42    41
  29  |    8   16   15   16   12    6   18   13   11   14    4 |    29   31   25   30   29   25   30   28   30   26    26
  30  |    4   10   13    8   12    4   11    8   10   10    3 |    35   36   34   33   36   32   36   33   36   33    34
  31  |   10   16   14   13   13    7   11   15   12   11    4 |    38   45   34   35   41   33   39   37   39   31    36
  32E |   11   17   14    8   14    6   15   16   13   10    4 |   165  169  163  163  164  162  166  172  165  157   165
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |    9   14   13   14   14    5   14   12   11   14      |T   69   64   67   63   70   61   70   62   66   61    67
 WRMS |    8   14   14   12   13    5   13   11   10   12      |NE  35   36   31   37   38   32   35   35   36   32    33
 MEDI |    7   13   14   13   13    4   13   11   11   12      |MD  39   41   36   41   42   38   40   39   40   37    38

Table 3.1815.4   GPS week: 1815   Day: 4   MJD: 56953.000                            

        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    7   16    9    9    4   12   11    8    8    3 |    42   48   39   40   46   41   48   45   44   42    43
   2M |   10   12   14   20   10    6   12   10   12   16    4 |    24   28   27   30   25   23   27   26   26   23    23
   4  |    7    7   13   10   11    5    8   14    9   11    3 |    26   25   22   26   25   22   25   31   28   21    24
   5  |   10   16   10   18   15    6   15   10   10   13    4 |    56   57   55   58   51   56   60   57   53   59    55
   6M |    9   10   15    9   11    7   12   13   15    8    4 |    44   51   47   48   48   44   51   48   43   46    46
   7  |    9   13   15   15   15    5   12    7    9   13    4 |    35   35   29   32   35   28   31   29   30   27    29
   8  |    8    8   12   12   16    6   10    8    7   22    4 |    32   29   25   24   26   24   27   22   27   35    26
   9M |   16   16   11   23   15   11   18   18   17   23    6 |    83   85   80   77   81   78   88   83   77   84    80
  10E |   13   24   14   16   15   11   19   10   12   15    5 |    97   96   96   97   98   91   99   96   94   97    95
  11  |    9    9   15   11   13    5   10   10   12   13    4 |    33   37   29   33   40   29   38   33   32   31    32
 X12E |  232  ---  151  ---  121  208    4  ---  ---  ---    0 |  9999  --- 9999  --- 9999 9999 9999  ---  ---  ---  9999
  13  |    8   12   15   15   24    4   13    9    9   10    4 |    34   36   29   34   45   29   34   30   32   26    30
  14M |    8   13   14   14   16    5   10   10   15   12    4 |    34   35   27   32   36   28   32   33   34   26    30
  15  |   13   13   12   12   14    3   13   11   11   14    4 |    31   30   24   29   32   24   29   30   28   24    25
  16E |   10   17    8   13   21    6   15   13   13   13    5 |    43   37   36   37   44   35   35   43   41   40    38
  17  |    7   14   15   14   15    5   15   11   11   16    4 |    32   33   28   38   36   30   32   36   33   30    31
  18  |    8   12    9   13   22    8   11   10   18   11    4 |    62   59   57   61   56   59   59   56   68   57    58
  19  |   12   17   15   14   15    5   11   13    9   15    4 |    30   34   25   29   29   25   29   26   26   24    25
  20  |    9   12   10   12   21    5   12   10   13   13    4 |    29   30   27   29   23   25   29   28   32   32    26
  21  |    9   10   16   13   11    5   11   15   16   18    4 |    33   30   28   31   32   26   31   31   32   27    28
  22  |    8   11    9   14   18    6   10    8   12   10    4 |    56   54   51   52   51   51   51   49   55   51    51
  23M |   12   15   13   17   19    7   14   15    9   12    5 |    43   42   35   40   43   34   40   37   39   29    35
  24M |    8   13   20   12   14    6   15   14   12   23    5 |    40   44   47   38   44   40   42   42   39   44    40
  25E |   19   12   16   19   12    8   12   10   16    9    5 |    66   58   59   52   60   51   63   52   56   53    55
  26  |    9   13   12   13   10    7    9    9   11   13    4 |    30   29   25   28   26   25   27   28   27   26    25
  27  |   14   12   16   17   12    8   11   10   11   14    4 |    40   34   31   30   39   29   39   36   31   29    32
  28E |    8   12    9   10   19    5   12   11    7   11    4 |    27   25   21   24   27   23   25   23   24   25    22
  29  |   11   16   18   15   11    7   16   17   13   14    5 |    33   34   29   28   31   27   29   35   33   29    28
  30  |    6   11   14   10   13    6   11    7   10   10    3 |    31   33   32   30   33   29   35   27   29   30    29
  31  |   10   15   16   13   15    7   12   13   13   13    4 |    37   38   28   33   41   28   33   37   35   30    32
  32E |   11   16   14   10   13    6   14   18   10   11    4 |   182  184  180  174  184  176  182  188  175  175   181
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |   10   13   14   14   15    6   13   12   12   14      |T   46   46   42   43   46   41   45   44   44   42    42
 WRMS |   10   13   14   14   14    6   12   10   10   12      |NE  32   33   28   31   34   27   32   31   30   27    28
 MEDI |    9   12   14   13   15    6   12   10   11   13      |MD  34   35   29   33   39   29   34   35   33   30    31

Table 3.1815.5   GPS week: 1815   Day: 5   MJD: 56954.000                            

        Weighted Average                                            Orbit Dynamics (7 days)
 PRN  |  cod  emr  esa  gfz  grg  igr  jpl  mit  ngs  sio  IGS |   cod  emr  esa  gfz  grg  igr  jpl  mit  ngs  sio   IGS
------+--------------------------------------------------------+---------------------------------------------------------
   1M |    6    8   16    8    8    5   11   11   11   11    3 |    47   50   47   49   47   45   50   43   44   46    47
   2  |   12   11   12   13   13    4   13    9   10   18    4 |    26   26   25   25   24   22   24   24   22   25    23
   4M |    7    9   13   10    9    5    8   14   11   13    3 |    27   28   28   26   28   24   26   26   28   21    25
   5  |    9   14   11   15   22    5   18    9   10   16    5 |    44   46   43   46   50   42   45   41   38   43    42
   6  |    8    8   12    9    7    3   14    5   10    6    3 |    35   41   35   33   40   36   44   35   37   34    36
   7  |    7   12   13   17   10    4   10    8   12   12    4 |    32   35   31   36   35   30   32   31   32   28    31
   8M |    9    7   11   15   17    5   11    8   11   28    4 |    28   28   28   27   27   26   28   26   30   37    27
   9M |   15   16    8   24   15    9   17   17   16   20    6 |    72   84   76   74   81   75   84   80   79   81    77
  10  |    7   20   15   14   15    8   20    7   12   16    5 |   130  137  132  134  138  131  137  133  128  135   133
  11  |    8    8   14   13    9    4   10   11   13   14    4 |    27   33   28   28   34   25   32   27   30   26    27
 X12E |    8   19    9   10   16    7  ---   12  ---   10    5 |   793  700  788  700  788  682  ---  698  ---  706   795
  13  |   11   13   14   14   17    6   13   10   11    8    4 |    39   37   32   37   41   32   34   32   34   31    34
  14M |    7   12   13   11   16    5   10   11   13   11    4 |    36   37   33   37   38   34   36   35   34   30    34
  15  |    9   14   10   13   18    5   19   10   11   13    4 |    37   39   33   38   38   32   33   35   37   32    34
  16E |   10   13    9   13   20    7   18   10   14   12    4 |    46   46   44   47   45   45   44   48   52   46    46
  17  |   10   15   16   14   13    5   14   10   12   15    4 |    37   35   32   36   37   32   32   35   33   34    32
  18  |    8   13    9   16   16    6   13   12   11   16    4 |    40   44   37   40   42   38   42   36   39   37    38
  19  |   13   15   13   16   15    4   12   16   11   15    5 |    31   35   30   32   30   29   34   31   31   27    29
  20  |    7   11    8   12   16    6   11   12   12   12    4 |    30   30   29   30   25   28   30   32   32   35    29
  21  |    8   11   16   11    9    6   17   21   12   18    5 |    28   30   27   25   27   23   31   25   25   26    25
  22  |    9   10    8   10   17    6   11    8   17   11    4 |    37   37   34   35   34   34   41   33   35   32    33
  23M |   10   16   12   15   16    6   15   20   11   15    5 |    52   57   51   52   58   51   53   50   57   43    51
  24  |    7   10   13    9   14    4   12    9   12   14    4 |    42   48   45   41   45   42   44   44   44   39    43
  25E |   11   12   16   14   17    7   13    8   16   11    4 |    72   76   77   75   77   74   53   73   70   73    73
  26  |    8    9   13   11   10    5   10    7   10   19    4 |    32   32   29   33   28   28   27   30   26   34    29
  27  |   11   12   14   19   15    6   11    8   13   16    4 |    35   34   31   29   37   31   39   34   34   30    32
  28E |    7   10    9   11   18    4   14    8    9    8    3 |    35   35   32   35   36   31   32   33   37   34    33
  29  |   13   15   16   18   13   10   18   13   16   16    5 |    37   34   31   36   31   28   31   32   30   28    30
  30  |    8   13   14   26    9    6   14    6   11   12    4 |    33   37   34   41   34   31   39   32   35   33    34
  31M |    9   14   16   15   17    6   11   17   15   14    5 |    36   40   35   36   43   33   37   39   35   31    35
  32E |   11   17   10   13   16    7   13   18   14   11    5 |   167  167  164  160  170  161  167  176  164  160   167
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |    9   13   13   15   15    6   14   12   12   15      |T   69   68   68   66   71   63   46   66   45   65    68
 WRMS |    9   13   13   13   13    5   13    9   11   14      |NE  33   34   30   33   33   29   33   31   31   29    30
 MEDI |    9   12   13   13   15    6   13   10   12   14      |MD  37   37   33   36   38   32   36   35   35   34    34

Table 3.1815.6   GPS week: 1815   Day: 6   MJD: 56955.000                            

        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    8   15    7    7    5   12   12   11   10    3 |    47   54   46   47   53   47   56   55   47   49    49
   2  |    9   10   12   15   11    5   12   12   12   17    4 |    22   29   26   30   28   25   29   27   25   27    24
   4  |    8    9   13    9    7    5    7   17    9   13    3 |    32   33   31   34   35   31   36   38   31   30    32
   5  |    8   13    9   15   16    4   13    9   14   15    4 |    45   50   47   51   44   47   50   47   48   53    46
   6  |   11    6   12   10    9    5   13    9   12   11    3 |    40   44   39   40   45   38   46   40   41   41    41
   7  |   11   11   12   17   12    3   11    9   16   13    4 |    35   37   30   39   35   29   32   32   32   25    31
   8  |    9    8   11   13   14    5   11   15   11   26    4 |    28   30   26   26   25   22   25   24   26   34    25
   9  |   15   15    9   22    9   10   18   16   15   19    5 |    79   93   83   81   84   81   91   89   79   89    84
  10  |    9   16   12   13   14    5   19    9   13   16    4 |   114  120  116  116  115  115  115  116  121  114   116
  11  |    8    9   14   12   10    4   10   12   10   13    4 |    43   45   41   48   52   41   50   46   39   43    44
  12E |   11   17    8   13   15    3   19   11   15    9    4 |   796  523  797  525  791  700 9999  524  381  525   800
  13  |    9   12   14   15   20    4   10   10   12   11    4 |    32   36   26   36   40   27   31   29   29   24    29
  14  |   11   10   11   14   17    6   13    9   12   14    4 |    30   32   27   33   33   26   28   26   28   23    26
  15  |    9   12    9   11   17    5   16   12   11   17    4 |    29   33   26   29   31   24   30   29   30   24    26
  16E |   14   14   11   13   20    7   16   21   11   16    5 |    39   36   35   34   39   32   32   43   35   38    35
  17  |    8   14   15   11   12    6   13   12   15   14    4 |    32   35   31   36   40   34   36   39   39   36    34
  18  |    8   14    8   18   19    7   13   18    9   15    5 |    44   49   44   48   46   44   47   44   49   48    44
  19  |   11   17   12   17   16    6   11   16   14   16    5 |    32   35   29   38   34   30   36   33   33   36    31
  20  |    9   10   10   13   17    4   11   10   11   14    4 |    27   30   28   29   28   26   29   27   28   35    27
  21  |    8   10   16   11   14    5   14   26   13   17    5 |    30   35   29   32   36   28   34   36   29   30    29
  22  |    8   10    8   14   20    5    8    8   13   12    4 |    36   38   36   40   39   35   38   36   35   40    35
  23  |    9   14   12   16   16    6   14   13   13   12    4 |    42   45   39   48   46   40   43   44   46   36    41
  24  |    5   10   14   11   13    5   12   11    8   14    3 |    33   37   35   32   34   31   37   33   38   31    33
  25E |   11   10   15   19   10    6   11   11   17   11    4 |    70   74   69   73   74   73   50   74   76   76    72
  26  |    7   11   11   11   11    3   12    8   10   13    3 |    26   29   24   24   25   23   25   25   30   26    24
  27  |   10   12   16   18   15    3   10    7   11   12    4 |    37   39   36   42   44   35   41   38   36   38    37
  28E |    8   12    6   10   19    4   11   12   10    9    4 |    28   30   27   26   30   25   28   27   29   28    26
  29  |   14   18   13   19   15    7   20   12   23   14    6 |    34   37   32   31   33   30   34   31   39   31    31
  30  |    7    9   11   10   11    3   10    7    8   12    3 |    28   32   30   27   31   26   31   28   30   29    28
  31  |   10   20   16   14   17    7   13   15   18   13    5 |    31   40   25   34   41   27   35   32   34   27    30
  32E |   12   15   12   10   17    7   17   22   17   10    5 |   198  199  195  193  201  194  197  207  195  195   197
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |   10   13   12   14   15    5   13   13   13   14      |T   69   63   67   62   72   64   46   61   56   60    68
 WRMS |    9   13   13   11   13    5   12   11   12   15      |NE  32   35   30   34   36   29   34   33   33   31    31
 MEDI |    9   12   12   13   15    5   12   12   12   13      |MD  34   37   32   36   39   31   36   36   35   36    33



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 4.1815   GPS week: 1815   MJD: 56949.0-56955.0

CENT| CLK EPO  |        BRUX       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 2980 |U    6     6    17 |U    7    11    27 |U    8    10    21 |
emr | emr 2969 |     8     9    20 |U    9    11    29 |     8     9    23 |
esa | esa 2989 |     8     8    19 |U    7    10    27 |     9    11    23 |
gfz | gfz 2968 |U    8     9    20 |U    9    10    32 |U   10    11    27 |
grg | grg 2998 |     8     9    20 |U   10    12    35 |U    8    10    23 |
igr | igr 2972 |     6     7    18 |     7    10    28 |     9    10    22 |
igs | igs 2965 |     7     8    19 |     9    12    32 |    10    16    29 |
jpl | jpl 2941 |     8     9    21 |    10    14    33 |U    9    10    24 |
mit | mit 2976 |     9    10    28 |U    9    12    35 |U   11    12    26 |



Table 5: Daily Precise Navigation Summary using the corresponding Centre orbit 
         positions and satellite clock corrections at 15 min intervals.

         Each line gives the daily station RMS w.r.t. the estimated coordinates 
         for the Latitude, Longitude and Height components.
        
         CLK  - Satellite clocks used.
         EPO  - Number of satellite clock epochs available for that day.
         Units: mm.

Table 5.1815.0   GPS week: 1815   Day: 0   MJD: 56949.0

CENT| CLK EPO  |        BRUX       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3052 |     7     8    19 |    10    12    26 |     9     9    25 |
emr | emr 3060 |     7    10    19 |    10    10    31 |    10     7    27 |
esa | esa 3072 |     7     9    18 |     9    10    25 |    10     9    26 |
gfz | gfz 3060 |     8     8    17 |    11    10    31 |    11     9    30 |
grg | grg 3071 |    10    10    23 |    13    12    37 |    10     8    28 |
igr | igr 3049 |     6     8    18 |     8    11    24 |    10     9    25 |
igs | igs 3049 |     7     8    19 |    12    11    36 |     9     8    26 |
jpl | jpl 3056 |     8     9    20 |    21    22    45 |    11    10    30 |
mit | mit 3072 |    22    23    85 |    12    11    33 |    11    11    31 |

Table 5.1815.1   GPS week: 1815   Day: 1   MJD: 56950.0

CENT| CLK EPO  |        BRUX       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3028 |     6     6    19 |     9    11    28 |    10    14    30 |
emr | emr 2968 |     8     9    21 |     9    11    24 |    10    14    30 |
esa | esa 2976 |     8     8    20 |     8    11    27 |    12    17    33 |
gfz | gfz 2968 |     8     8    22 |    10    11    32 |    11    16    33 |
grg | grg 3042 |     7     8    22 |    11    12    30 |    11    14    32 |
igr | igr 2976 |     6     7    19 |     8    11    29 |    11    14    32 |
igs | igs 2986 |     7     8    20 |     9    11    27 |    12    22    42 |
jpl | jpl 2872 |     9    11    25 |    10    12    27 |    13    16    30 |
mit | mit 2976 |     7     7    22 |     9    12    34 |    15    21    40 |

Table 5.1815.2   GPS week: 1815   Day: 2   MJD: 56951.0

CENT| CLK EPO  |        BRUX       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 2976 |     8     9    25 |     6    12    28 |     8     8    20 |
emr | emr 2968 |     9    10    25 |    10    19    33 |     9    10    23 |
esa | esa 2976 |    10    11    25 |     7    10    28 |    10    10    25 |
gfz | gfz 2968 |    11    11    27 |     8    10    32 |    13    15    36 |
grg | grg 2975 |     8     9    25 |    10    15    44 |     8     9    25 |
igr | igr 2974 |     8    10    26 |     6    10    31 |     9     9    23 |
igs | igs 2975 |     8    10    25 |     8    16    36 |    10    13    29 |
jpl | jpl 2968 |     9    11    25 |    10    19    32 |    11    12    32 |
mit | mit 2976 |     9     9    24 |     9    16    41 |    11    12    28 |

Table 5.1815.3   GPS week: 1815   Day: 3   MJD: 56952.0

CENT| CLK EPO  |        BRUX       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 2976 |     6     6    13 |     6     9    26 |     8    11    23 |
emr | emr 2968 |     9     8    22 |     9    12    33 |     8    10    21 |
esa | esa 2976 |     9     8    21 |     6     9    27 |     8    13    22 |
gfz | gfz 2968 |     8     8    21 |     7    10    31 |     8    12    25 |
grg | grg 2976 |     6     6    21 |     8    12    41 |     7    10    20 |
igr | igr 2976 |     6     6    14 |     5     9    27 |     9    12    24 |
igs | igs 2935 |     7     8    21 |     7    11    31 |     9    14    25 |
jpl | jpl 2872 |     9     7    17 |     8    12    31 |     8    10    19 |
mit | mit 2976 |     8     8    23 |     8    12    37 |    11    12    26 |

Table 5.1815.4   GPS week: 1815   Day: 4   MJD: 56953.0

CENT| CLK EPO  |        BRUX       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 2976 |     4     6    12 |     8    12    29 |     8     9    15 |
emr | emr 2876 |     7    11    20 |    11    12    31 |     8     9    16 |
esa | esa 2976 |     6     8    13 |     9    11    34 |    10    13    19 |
gfz | gfz 2873 |     7    11    18 |    11    12    37 |     9     9    20 |
grg | grg 2976 |     8    15    16 |    13    18    38 |     9    11    20 |
igr | igr 2880 |     6     8    17 |    10    13    32 |     8     8    17 |
igs | igs 2872 |     6    10    17 |    11    12    33 |     8     8    18 |
jpl | jpl 2972 |     8     8    20 |     8    12    34 |     9     6    21 |
mit | mit 2880 |     7    11    18 |    12    14    36 |    10    12    18 |

Table 5.1815.5   GPS week: 1815   Day: 5   MJD: 56954.0

CENT| CLK EPO  |        BRUX       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 2880 |     5     4    11 |     7    11    23 |     9    10    15 |
emr | emr 2972 |     9     8    18 |     8    10    23 |     8    10    19 |
esa | esa 2976 |     9     6    20 |     8    10    21 |     9    11    17 |
gfz | gfz 2969 |     7     8    15 |     9    11    24 |     9    10    22 |
grg | grg 2976 |     7     7    14 |     9    10    22 |     8     9    19 |
igr | igr 2976 |     7     5    13 |     7    10    24 |     9    10    17 |
igs | igs 2975 |     6     6    14 |     7    10    23 |     8    10    18 |
jpl | jpl 2876 |     7     7    24 |    10    13    28 |     9    10    20 |
mit | mit 2976 |     6     6    11 |     8    11    29 |    10    10    22 |

Table 5.1815.6   GPS week: 1815   Day: 6   MJD: 56955.0

CENT| CLK EPO  |        BRUX       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 2976 |     5     7    19 |     6     8    32 |     6     6    18 |
emr | emr 2972 |     8     9    17 |     7     7    28 |     7     6    24 |
esa | esa 2976 |     6     7    19 |     6     7    29 |     7     7    19 |
gfz | gfz 2972 |     6     9    20 |     6     8    34 |     7     7    22 |
grg | grg 2976 |     7     7    17 |     8     7    35 |     6     8    20 |
igr | igr 2976 |     5     7    19 |     5     7    32 |     6     6    18 |
igs | igs 2964 |     5     7    17 |     8    17    37 |    14    36    44 |
jpl | jpl 2972 |     8     9    18 |     6     8    34 |     5     4    21 |
mit | mit 2976 |     5     7    16 |     7     9    37 |     7     8    20 |


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 6.1815   GPS week: 1815   MJD: 56949.500-56955.500

                                                         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 |     -58     -11       0    -146     -3 |      10     19
            |      21      29      52      44      6 |       3
emr   uuuuu |       9       2      89      12      9 |      31     36
            |      17      16      99      39     11 |       5
esa   uuuuu |       3     -16      79       6     -1 |      13     23
            |      15      14      66      57      5 |       3
gfz   uuuuu |      29     -33      13       8     -3 |     -68     70
            |      15      24     105      86      8 |       3
grg   uuuuu |      10      10     -40      98      4 |      35     40
            |      16       4     117     140      7 |       4
igr   xxxxx |       1      -7     -34      69      0 |      -6     16
            |      15      17      55      61      3 |       2
irf   xxxxx |       4      12     -29     -14      4 |      -3     17
            |       8       9      24      28      3 |       3
jpl   uuuuu |       8      10      20      41     -8 |      10     18
            |      26      26      84      77     11 |       4
mit   uuuuu |       0      19     -82     -53      4 |      17     23
            |      17      21      40      81      3 |       2
ngs   uuuuu |      23      18     -70     141      3 |       7     15
            |      49      35      89      51      7 |       2
sio   uuxxx |       9       2     -34     184     -8 |      43     45
            |      14      12      66      84      7 |       3


Table 7.1815.0   GPS week: 1815   Day: 0   MJD: 56949.500

                                                         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 |     -67     -65      46    -177      1 |       9     18
emr   uuuuu |      12      17     117      20     18 |      21     29
esa   uuuuu |      -4     -17      98     -64      5 |      12     22
gfz   uuuuu |      48     -68      40     -98     -3 |     -68     70
grg   uuuuu |      14      18    -198     328      2 |      30     36
igr   xxxxx |       3     -21     -63      -9     -3 |      -7     16
irf   xxxxx |      17      26     -36      22      7 |      -6     17
jpl   uuuuu |     -18      48      53     -94    -23 |      11     22
mit   uuuuu |       4      45     -68      58      4 |      14     21
ngs   uuuuu |      17      48    -169     216      1 |       5     14
sio   uuxxx |      35      22     -83     279      2 |      39     42

Table 7.1815.1   GPS week: 1815   Day: 1   MJD: 56950.500

                                                         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 |     -34      -3     -82    -223      4 |      10     18
emr   uuuuu |       8       8     100      60      0 |      28     31
esa   uuuuu |       3      -1      27     -35      1 |      13     23
gfz   uuuuu |      31     -61     156     -82    -12 |     -66     69
grg   uuuuu |      24       8     -24     156      3 |      32     37
igr   xxxxx |     -10       3     -59     164     -2 |      -7     16
irf   xxxxx |       3      17     -55      19      4 |      -4     16
jpl   uuuuu |      19       6       5      54    -19 |      13     21
mit   uuuuu |     -19      30     -90      35      1 |      16     22
ngs   uuuuu |      -3      -6     -18     119      5 |       4     13
sio   uuxxx |      -8      12     -98     281     -3 |      42     44

Table 7.1815.2   GPS week: 1815   Day: 2   MJD: 56951.500

                                                         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 |     -52     -11      23    -109     -4 |      13     21
emr   uuuuu |     -12      -6     207     -37      1 |      31     34
esa   uuuuu |      13      -8      60       8     -3 |      16     24
gfz   uuuuu |      38     -35    -152      50     -7 |     -65     67
grg   uuuuu |       7       9     -94      38      6 |      36     40
igr   xxxxx |      14       3     -14     112      4 |      -4     15
irf   xxxxx |       2      16     -48     -24      8 |      -1     17
jpl   uuuuu |      -1       1      82      47     -5 |      13     21
mit   uuuuu |     -15      39     -90     -89      6 |      18     24
ngs   uuuuu |      38       0     -41     138      2 |       7     15
sio   uuxxx |       7      -1     -34     139     -1 |      45     47

Table 7.1815.3   GPS week: 1815   Day: 3   MJD: 56952.500

                                                         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 |     -68       9     -24    -138     -7 |      14     21
emr   uuuuu |      -9       0     -33       2     29 |      33     36
esa   uuuuu |     -19      -4      49     -52      0 |      17     25
gfz   uuuuu |      29     -14    -105     116      1 |     -65     67
grg   uuuuu |       8      12     -76     190     16 |      39     43
igr   xxxxx |      -4      -5     -61      80      3 |      -3     15
irf   xxxxx |      -6      14     -13     -27      2 |       1     17
jpl   uuuuu |      43     -22     138       0    -15 |      13     21
mit   uuuuu |     -20      21     -41     -81     -1 |      20     27
ngs   uuuuu |      85     -12      81     119      6 |       9     16
sio   uuxxx |      -2      -4      13      79    -10 |      47     49

Table 7.1815.4   GPS week: 1815   Day: 4   MJD: 56953.500

                                                         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 |     -84     -32      11    -151    -13 |      12     18
emr   uuuuu |      36       8     -60      63     12 |      36     41
esa   uuuuu |      -2     -16     126      71    -10 |      15     23
gfz   uuuuu |      39     -21      51      90    -13 |     -66     68
grg   uuuuu |      13       7     177    -104     -1 |      40     45
igr   xxxxx |     -11      22      47      -3      0 |      -4     14
irf   xxxxx |       8       6      16     -12     -2 |       1     17
jpl   uuuuu |     -15      41     -58      28      5 |       9     14
mit   uuuuu |      13      10     -41     -29      1 |      19     25
ngs   uuuuu |      30      22    -117      93      8 |       9     17
sio   uuxxx |      17     -16      86      85    -12 |      47     48

Table 7.1815.5   GPS week: 1815   Day: 5   MJD: 56954.500

                                                         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 |     -73       2      67    -132     -1 |       8     19
emr   uuuuu |       8     -29     168       0      2 |      35     40
esa   uuuuu |      -2     -21      -2      64     -1 |      11     21
gfz   uuuuu |       2      -6      45      37     11 |     -71     73
grg   uuuuu |     -22       5     -85       8     10 |      36     42
igr   xxxxx |     -13     -25    -111      75     -4 |      -7     16
irf   xxxxx |      -3      -1     -26     -15      3 |      -3     18
jpl   uuuuu |      39     -11      33     150     -7 |       6     12
mit   uuuuu |      15     -17     -85     -98      5 |      15     22
ngs   uuuuu |      61      82    -166      91      8 |       7     16
sio   uuxxx |       6       4     -87     209    -17 |      42     44

Table 7.1815.6   GPS week: 1815   Day: 6   MJD: 56955.500

                                                         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      22     -39     -90      0 |       6     18
emr   uuuuu |      22      17     121     -27      3 |      35     40
esa   uuuuu |      29     -41     192      48      0 |       9     21
gfz   uuuuu |      18     -25      53     -57     -2 |     -72     74
grg   uuuuu |      25      12      17      66     -5 |      35     40
igr   xxxxx |      28     -22      23      64      1 |      -8     18
irf   xxxxx |       9       5     -42     -60      4 |      -4     18
jpl   uuuuu |      -8       5    -112      99      5 |       3     13
mit   uuuuu |      19       8    -160    -171      7 |      14     22
ngs   uuuuu |     -68      -8     -60     207    -12 |       7     16
sio   uuxxx |       6      -1     -36     214    -11 |      39     43



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