[IGSREPORT-23173] Wk 1818 IGS Final Orbits

IGS ACC igs.acc at noaa.gov
Fri Nov 28 11:05:59 PST 2014


Author:  AC Coordinator / NOAA NGS

sum-file Version 2.0
Final IGS Orbit Combination - Week 1818   (Nov 09, 2014 - Nov 15, 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:

igs1818[0-6].sp3  IGS GPS ephemeris files in SP3 format.
igs1818[0-6].clk  IGS GPS satellite and station clocks in clock RINEX format.
igs1818[0-6].cls  IGS GPS clock combination summary report.
igs18187.erp      Earth Rotation Parameters (ERP) and their rates as well as
                  Universal Time (UT1-UTC) and Length Of Day (LOD) associated 
                  with IGS ephemerides.
igs18187.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   | HOB2 HOB2
                0  |  EMR   | YELL YELL
                0  |  ESA   | BJFS HOB2
                0  |  GFZ   | 1 2 6 30 1 6 30 HOB2 HOB2
                0  |  GRG   | GRAZ HOB2 MAL2 BRMU GRAZ HOB2 MAL2
                0  |  MIT   | 1 2 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20
                0  |  MIT   | 21 22 23 24 25 26 27 28 29 30 31 32 1 2 4 5 6 7 8
                0  |  MIT   | 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25
                0  |  MIT   | 26 27 28 29 30 31 32 HOB2 HOB2
                1  |  COD   | INVK MAC1 INVK MAC1 QAQ1
                1  |  EMR   | THU3 CHUR FAIR THU3
                1  |  GFZ   | 1 6 30 1 6 30 ALRT MDVJ ALRT MDVJ
                1  |  GRG   | BRAZ LPGS STJO BRAZ LPGS MDVJ STJO
                1  |  MIT   | 8 18 22 5 8 18 22
                2  |  COD   | HOB2
                2  |  EMR   | HOB2
                2  |  ESA   | BJFS BJFS HOB2 NOVM TIXI
                2  |  GFZ   | 1 2 6 9 30 1 6 30 HOB2 NOVM
                2  |  GRG   | GRAZ MCM4 NKLG STJO GRAZ NKLG STJO
                2  |  MIT   | 1 7 8 21 23 25 1 7 8 11 21 23 25 28 30 HOB2 MDVJ
                3  |  COD   | DAV1 ALRT DARW DAV1
                3  |  EMR   | TLSE HOB2 PRDS TLSE USNO
                3  |  ESA   | BJFS BJFS HOB2 NOVM
                3  |  GFZ   | 1 6 30 1 6 30 DRAG HOB2 TLSE HOB2 MDVJ TLSE
                3  |  GRG   | FLIN GRAZ HOB2 DAV1 FLIN GRAZ HOB2 KOUC
                3  |  JPL   | ALRT
                3  |  MIT   | 8 21 8 18 21 22 HOB2 TLSE HYDE TLSE
                4  |  ESA   | BRMU ISPA BRMU ISPA
                4  |  GFZ   | 1 2 6 30 1 6 30
                4  |  GRG   | BOGT BRAZ BRMU DRAG KOUC BOGT BRAZ BRMU DRAG KOUC
                4  |  MIT   | 1 7 1 7 TLSE ALRT MDVJ TLSE
                5  |  COD   | DAV1 DAV1 GLPS
                5  |  EMR   | MCM4 MCM4
                5  |  ESA   | BJFS BRMU BRMU GLPS
                5  |  GFZ   | 1 6 30 1 6 30 GLPS
                5  |  GRG   | DRAG GLPS DRAG GRAZ STJO
                5  |  JPL   | TIXI
                5  |  MIT   | 8 5 8 KOUR HARB KOUR MDVJ
                6  |  COD   | FAIR FAIR
                6  |  EMR   | MCM4 TSKB MCM4 TSKB
                6  |  ESA   | BJFS BRMU GLPS BJFS GLPS TIXI
                6  |  GFZ   | 1 2 6 30 1 6 30 KELY STJO KELY STJO
                6  |  GRG   | BOGT DRAG FAIR GLPS USNO BOGT BRMU DRAG GLPS USNO
                6  |  MIT   | 1 13 19 1 13 19 20

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

 7. Starting 5-Nov-2006 (GPS Week 1400, day 0, MJD 54044) until 16-Apr-2011 (GPS
    Week 1631, day 6, MJD 55667) all IGS products, including the IGS combined
    orbits, are based on the IGS realization of the ITRF2005 reference frame
    (IGS05). For more information see IGSMAIL #5447. The IGS05 frame is also the
    basis for the homogeneously reprocessed IGS products from GPS Weeks 730 to 1459
    (1994-2007); see IGSMAIL #6136.
    
    Starting 17-Apr-2011 (GPS Week 1632, day 0, MJD 55668) all IGS products, are
    based on the IGS realization of the ITRF2008 reference frame (IGS08). For more
    information see IGSMAIL #6354.
    
    Starting 07-Oct-2012 (GPS Week 1709, day 0, MJD 56207) all IGS products, are
    based on the updated IGS08 frame (IGb08). For more information see IGSMAIL
    #6663.

 8. Small rotations were applied to all the AC orbit and ERP values in order to
    align them to the current IGS reference frame. These RX, RY and RZ rotations
    were estimated in the IGS SINEX combination process, performed by the IGS
    Reference Frame Coordinator at the Institut Geographique National (IGN).
    Starting on 19-Aug-2012 (GPS Week 1702; MJD=56158), ACs began contributing
    products based on 1d SINEX integrations. As a result, the SINEX combinations
    are now done daily instead of weekly, and the associated daily rotations are
    applied here to the orbits and ERPs. The estimated 7 transformations, from
    which only the 3 rotations are applied to the orbit and ERP values, are:
    
            |     |    DX     DY     DZ      RX     RY     RZ     SCL
     Centre | Day |   [mm]   [mm]   [mm]   [uas]  [uas]  [uas]   [ppb]
     -------+-----+---------------------------------------------------
       COD  |   0 |   -1.3   -1.0   -1.7     -56      6      9     .57
       EMR  |   0 |    2.2    4.3   23.7      20     20     11     .46
       ESA  |   0 |    -.2   -1.1   -1.2       0      5     26     .36
       GFZ  |   0 |     .0     .9   -1.9       2    -85     22     .33
       GRG  |   0 |    -.4    4.3  -15.1     -22      8     24     .80
       JPL  |   0 |   -3.7     .5   11.7     -45     -6    -26     .10
       MIT  |   0 |    4.3     .5    7.4      -2      3    -27     .47
       NGS  |   0 |    3.2   -2.8    4.4     -16    -15     12     .87
       SIO  |   0 |    6.0    1.7   40.4      40     -3     83     .25

       COD  |   1 |   -1.7    -.6   -1.0     -52    -19     -3     .47
       EMR  |   1 |   -1.0    1.6   25.9      29     18     25     .25
       ESA  |   1 |     .6   -2.3   -1.8      -4      1     18     .50
       GFZ  |   1 |     .2     .1   -1.7      -6    -76     19     .43
       GRG  |   1 |   -2.6   -1.5  -22.0     -10     21     -1     .89
       JPL  |   1 |   -2.3     .5   18.3     -34     -6    -35     .56
       MIT  |   1 |    3.9   -2.1   12.6       8      6    -25     .65
       NGS  |   1 |     .5   -8.3   10.6     -77    -17    -26     .91
       SIO  |   1 |    1.8   -2.0   43.1       5     27    -93     .66

       COD  |   2 |   -1.5   -1.3   -2.2     -47    -15     32     .77
       EMR  |   2 |     .5   -2.6   32.9      10     13     -6     .72
       ESA  |   2 |     .4    -.7    -.7      -6    -17     44     .33
       GFZ  |   2 |     .6     .1   -2.2      -9    -85     16     .53
       GRG  |   2 |    3.5    1.0  -11.9     -37      0    -11     .83
       JPL  |   2 |    2.5   -3.8   16.4     -31     35     44     .07
       MIT  |   2 |    5.5   -2.1    6.3     -22     -1    -47     .81
       NGS  |   2 |    2.9  -10.8   10.7     -76    -35    -31     .85
       SIO  |   2 |    4.7     .7   44.4      18    -19    -97     .57

       COD  |   3 |   -1.5   -1.8   -2.0     -40     -9     14     .61
       EMR  |   3 |    -.5    5.3   26.5      16      7     26     .42
       ESA  |   3 |     .9   -2.2    -.5     -31    -15     51     .58
       GFZ  |   3 |    -.3     .9   -1.2     -23    -67      6     .09
       GRG  |   3 |    -.4     .0    -.3     -32     12    -13     .40
       JPL  |   3 |    2.4   -1.9   16.1     -39     41    -13     .21
       MIT  |   3 |    4.6     .1    7.7     -16      6    -49     .52
       NGS  |   3 |   -4.0   -5.5   20.5     -96    -29    -57     .92
       SIO  |   3 |    4.8   -3.1   37.1      21     -4    -14     .59

       COD  |   4 |   -1.2   -1.5   -2.4     -27      1     11     .59
       EMR  |   4 |    -.2    9.1   22.4      16      3      5     .27
       ESA  |   4 |     .3    -.7   -1.0     -10    -13     41     .21
       GFZ  |   4 |     .0     .6   -1.6     -13    -72      9     .28
       GRG  |   4 |     .0   -4.0  -15.2     -33     10    -13     .76
       JPL  |   4 |   -5.5   -8.5   23.2     -26     25     22     .35
       MIT  |   4 |    2.5    2.1    8.8     -17     -4    -37     .79
       NGS  |   4 |    4.0   -3.9   10.9     -30    -40      0     .80
       SIO  |   4 |    7.8    -.7   31.5      -1     18     48     .73

       COD  |   5 |   -1.6     .4   -1.3     -32    -13     37     .30
       EMR  |   5 |    -.8    9.6   26.9      15     16      2     .51
       ESA  |   5 |     .6    -.3   -1.3       2    -21     43     .27
       GFZ  |   5 |    -.2     .6   -1.5     -24    -78      2    -.04
       GRG  |   5 |    3.3   -3.8  -15.8     -24      9    -23     .95
       JPL  |   5 |    6.3   -1.2   16.6     -16      6     22     .37
       MIT  |   5 |    5.2    -.1    2.9     -14     -5    -41     .72
       NGS  |   5 |    6.2   -2.6    7.8     -24    -41     13     .77
       SIO  |   5 |    7.5     .0   33.1      10     19    -36     .55

       COD  |   6 |   -1.5     .1   -1.8     -30     -6     33     .44
       EMR  |   6 |    5.7    5.8   32.0      13     14     11     .58
       ESA  |   6 |     .7   -1.0    -.7      -7    -17     45     .39
       GFZ  |   6 |     .8     .2   -1.6     -21    -87     18     .30
       GRG  |   6 |    3.6    -.9  -17.2     -27     -1     10    1.01
       JPL  |   6 |   12.6   -9.0   20.7       0      6     44     .62
       MIT  |   6 |    9.8    3.0    9.2     -10      1    -39     .75
       NGS  |   6 |    -.9   -3.7   13.1     -53     -8    -26     .80
       SIO  |   6 |   13.8   -2.0   33.5      -7     -4     -9     .77


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

10. Starting 5-Nov-2006 (GPS Week 1400, day 0, MJD 54044) until 16-Apr-2011 (GPS
    Week 1631, day 6, MJD 55667) the absolute antenna model is introduced (IGSMAIL
    #5438). The antenna phase center offsets and phase center variations are given
    in the file:
        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 1.1818.a). It also displays the computed satellite
position sigmas for the combined orbits (Table 1.1818.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 2.1818.[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 3.1818.[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 5.1818.0-6). 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 1818 summary.                       (Nov 09, 2014 - Nov 15, 2014)

Table 1.1818.a   GPS week: 1818   MJD: 56970.000-56976.000

         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|    0     0     0    -2    12     3   .02    9    9 |   -1118     280     17    119
        |    0     0     1     9    18    12   .03           |     158     289
emr   80|   -1     0     9   -27   -22    -1   .31   12   12 |    2872     -60     16    145
        |    1     1     1    17    17    13   .03           |     803     900
esa  150|    0     0     1    26    -7   -16  -.35   12   11 |    -912     699      9    150
        |    0     0     0    59    14    31   .01           |     823     841
gfz  199|   -1     0     0    23   -14    49  -.19   13   12 |    -276     282     11    153
        |    0     0     0    26    19     9   .03           |     456     656
grg  172|    1     0   -19     0    10   -26   .26   17   16 |     126     157     16    143
        |    1     1     3    21    20    27   .06           |     233     420
igr  n/a|   -1     0    -5    -5    17   -22  -.19    5    5 |    2019    -287     15     81
        |    0     0     1    12    16    11   .03           |     431     967
jpl   80|   -1     0     9     5    23   -12   .29   11   11 |    2713    -101     16    113
        |    0     1     0    39    33    26   .02           |     996     841
mit  349|    1     0    -5    -6    -2     2  -.13   12   11 |    -217      46     31    211
        |    1     1     1    23    24    14   .05           |     127     253
ngs  226|    0     0     0   -17   -12     8  -.03   13   11 |   -1091     297   1292   3232
        |    1     1     2    38    62    41   .06           |     124     316
sio  330|    1     0    -4    -4    -4    -4  -.21   13   13 |     ---     ---    ---    ---
        |    0     1     2    13    12    59   .18           |     ---     ---


Table 1.1818.b   GPS week : 1818   MJD: 56970.000-56976.000   

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



Table 2: Daily transformation of each centre to the combined IGS orbit and
         clocks for each day of the week. The transformation displayed is the
         result of the combination after the AC orbits were pre-aligned using
         the SINEX rotations from above. Prior to Wk 1702, AC ERP rotations
         used in the pre-alignment were also displayed.
         WRMS - RMS weighted by the centres SP3 header accuracy codes.
         STA  - Number of stations in the daily solutions.
   
Table 2.1818.0   GPS week: 1818   Day: 0   MJD: 56970.000                            

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    -1    -1     4    22     7   .02    8    8 |   -1353     602     17    132
emr   80|    0     0    10   -36    -2   -15   .36   13   13 |    2512    -586     16    136
esa  150|    0     0     2   159     5   -84  -.34   11   11 |     -67    -109      8    136
gfz  202|   -2     0     1   -24   -30    56  -.15   13   11 |    -575     158     13    161
grg  171|    2     0   -16   -36     9   -44   .34   17   16 |    -126     297     17    163
igr  n/a|    0     0    -3    -8     3   -13  -.16    5    5 |    2540    -747     15     73
jpl   80|   -1     0     9   -21   -11   -47   .33   11   11 |    2225    -661     16    112
mit  350|    0    -1    -4   -18   -10     4  -.04   13   12 |    -319    -199     64    234
ngs  229|    0     0    -3   -58     0    38   .07   13   11 |   -1282     580   1036   2896
sio  319|    0     1    -5   -22   -10    94  -.60   12   12 |     ---     ---    ---    ---

Table 2.1818.1   GPS week: 1818   Day: 1   MJD: 56971.000                            

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    -1     2    17   -14  -.03    9    9 |   -1039     214     17    107
emr   80|    0     1    11   -16    -6    22   .32   13   13 |    2051    -448     19    154
esa  150|    0     1     0     4    -4   -12  -.35   11   11 |   -1059    1503     11    164
gfz  199|   -1     1     1    12   -20    53  -.21   14   13 |    -424     139     11    149
grg  175|    0    -3   -22     2    20    -9   .26   17   16 |     -26     250     17    146
igr  n/a|    0     0    -5     5    13     0  -.20    6    5 |    1884    -737     17     80
jpl   80|   -1     0     9   -41   -15   -22   .28   11   11 |    1618    -433     18    118
mit  350|    1    -3    -4    17     4    27  -.09   12   11 |    -239     -82     24    191
ngs  227|    0     0     1     6   -26   -10  -.01   13   12 |   -1061     442   1223   3228
sio  333|    1     0    -5     4     2   -27  -.13   14   13 |     ---     ---    ---    ---

Table 2.1818.2   GPS week: 1818   Day: 2   MJD: 56972.000                            

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  252|    0     0     2   -19   -11    13  -.00   11   10 |    -912    -180     22    114
emr   80|    0    -1    11   -40   -44   -11   .30   13   13 |    1753    1078     18    140
esa  150|    0     1     1     3   -31     1  -.38   12   12 |   -1232    1084     10    149
gfz  200|   -2     1     0    32   -12    38  -.20   14   13 |    -332    -201     13    157
grg  175|    0     0   -21    15    36     0   .23   16   15 |     118     -25     17    138
igr  n/a|   -1     0    -7   -19     0   -29  -.23    6    6 |    1236     440     17     85
jpl   80|   -1     0     9    23    77    28   .29   10   10 |    1341     735     16     97
mit  350|    2     0    -7   -14    -1    11  -.13   12   11 |    -409     352     29    210
ngs  229|    0    -1     0    11    -6   -13  -.07   13   13 |    -909    -186   1264   2941
sio  336|    1     0    -8     2   -20   -76  -.17   15   15 |     ---     ---    ---    ---

Table 2.1818.3   GPS week: 1818   Day: 3   MJD: 56973.000                            

CENT STA|   DX    DY    DZ    RX    RY    RZ   SCL  RMS  WRMS|    TOFT   TDRFT   SDEV    RMS
        |  [mm]  [mm]  [mm] [uas] [uas] [uas] [ppb] [mm] [mm]|    [ps]  [ps/d]   [ps]   [ps]
--------+----------------------------------------------------+------------------------------
cod  247|    0     0     0    -6   -13    10   .00   11   11 |    -971      29     19    124
emr   80|   -2     1     8   -23   -27    -8   .31   13   13 |    3078    1073     17    150
esa  150|    0     0     1   -19   -15   -11  -.34   12   12 |   -2419    -116      9    148
gfz  195|    0     0     1    14   -41    32  -.18   13   11 |    -452    1179     11    147
grg  172|    1     0   -19    26    26     8   .32   16   15 |       0     583     17    140
igr  n/a|   -2     0    -5    -1    10   -32  -.18    5    5 |    1788     951     16     75
jpl   80|    0     0     9   -29    28     2   .29   10   10 |    3066    1100     15    110
mit  350|    2     0    -6    11    42    -3  -.15   11   10 |     -58      32     24    195
ngs  232|   -2     0     2    32   -34   -37  -.06   12   11 |    -974      30   1397   3017
sio  332|    2     0    -6     8    19     5  -.15   13   14 |     ---     ---    ---    ---

Table 2.1818.4   GPS week: 1818   Day: 4   MJD: 56974.000                            

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    -3    -9    27    -5   .05    9    8 |   -1226     489     17    109
emr   80|    0     1     9     4   -17    -8   .26   12   12 |    3743     126     13    133
esa  150|    1     0     1    15     0   -14  -.34   12   12 |    -462     711     10    150
gfz  200|   -1     1     0    53   -11    48  -.23   13   12 |     378    -170     12    153
grg  170|    1     0   -14     4    14   -64   .25   15   14 |     317    -147     15    121
igr  n/a|   -1     0    -5    -6    18   -26  -.20    5    5 |    2162     263     16     76
jpl   80|   -2    -1    11    17    54     0   .27   12   12 |    3760     154     16    106
mit  349|    0     0    -3   -20     1    -1  -.16   11   10 |    -235     427     24    204
ngs  228|    0     1     2   -56   -91     9  -.00   12   11 |   -1094     311   1161   3222
sio  334|    0     0    -2    -1     0    41  -.15   13   14 |     ---     ---    ---    ---

Table 2.1818.5   GPS week: 1818   Day: 5   MJD: 56975.000                            

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    -1    -1     7    34    19   .05    8    8 |   -1094     557     17    124
emr   80|   -1     2     9   -42    -9     2   .31   12   12 |    3849    -277     16    157
esa  150|    1     0     1     6     8     8  -.34   12   12 |   -1089    1922     10    158
gfz  199|   -1     1     0    47    20    54  -.20   12   12 |    -848    1230     11    147
grg  172|    1    -2   -20     4   -15   -24   .24   17   17 |      47     669     16    141
igr  n/a|   -1     0    -4   -20    50   -24  -.17    5    5 |    2365    -212     15     97
jpl   80|   -1     1     9    12    18   -39   .28   11   11 |    3808    -240     16    126
mit  350|    0     0    -5    20   -34    -7  -.15   12   11 |     -61      12     27    237
ngs  220|   -2     0     2   -54   -39   -10  -.10   12   10 |   -1168     724   1449   3844
sio  328|    0    -1    -1     3    -8    -5  -.10   13   13 |     ---     ---    ---    ---

Table 2.1818.6   GPS week: 1818   Day: 6   MJD: 56976.000                            

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    -1     4    12    -5   .05    8    8 |   -1234     250     16    125
emr   80|   -2     0     8   -38   -45     7   .29   11   11 |    3123   -1392     17    150
esa  150|    1     0     0    12   -15     1  -.34   11   11 |     -61     -99      8    148
gfz  200|   -1     1     1    26    -7    58  -.18   13   12 |     317    -357     12    158
grg  173|    3     0   -22   -20   -19   -52   .15   18   17 |     554    -522     16    157
igr  n/a|   -2     0    -5    13    22   -31  -.22    5    5 |    2162   -1970     15     86
jpl   80|   -1    -1     9    73    11   -12   .29   11   11 |    3178   -1365     18    124
mit  350|    0     0    -5   -40   -22   -16  -.18   13   13 |    -203    -216     29    206
ngs  223|    0     0     1    -6   113    85  -.03   14   12 |   -1149     182   1515   3480
sio  331|    1    -1    -3   -25   -11   -64  -.16   13   12 |     ---     ---    ---    ---

       
       
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 3.1818.0   GPS week: 1818   Day: 0   MJD: 56970.000                            

        Weighted Average                                            Orbit Dynamics (7 days)
 PRN  |  cod  emr  esa  gfz  grg  igr  jpl  mit  ngs  sio  IGS |   cod  emr  esa  gfz  grg  igr  jpl  mit  ngs  sio   IGS
------+--------------------------------------------------------+---------------------------------------------------------
   1  |    7    9   11    9   12    4    9   12   12   14    3 |    59   58   51   53   71   54   57   59   52   59    57
   2  |    7   10   11   11   15    5    9   10   13   13    3 |    27   25   28   33   39   27   25   33   28   29    28
   4  |    6    9   10   17    8    4   11   10   11   15    4 |    39   34   34   35   44   36   35   41   38   38    36
   5  |    6   11   11   11   15    4   10   11   12   10    3 |    19   26   19   19   28   17   26   21   24   18    19
   6  |    5    9   11    9   13    5   10   10   17    8    3 |    58   59   54   60   73   58   59   62   58   61    59
   7  |    7   11   11   10   17    6    8   13   12    9    4 |    31   33   28   27   33   25   32   29   26   19    27
  X8  |    9   14   13   16  ---    8   13   13   18  ---    5 |    31   22   23   29  ---   21   24   26   23  ---    23
   9  |    9   11   13   14   18    6   10   14   15   12    4 |   213  220  217  220  208  214  216  214  214  214   215
  10  |   11   11    9   13   18    5   10   17   10   13    4 |    53   48   52   49   58   54   50   57   54   52    51
  11  |    8   11   13   14   15    4   11   11   12   18    4 |    45   45   38   41   59   41   44   46   38   48    43
  12E |    9   22    6   11   14    4   15   17   13   11    4 |    29   31   23   31   27   24   30   31   33   27    27
  13  |    5    9   10   14   21    4   11    9    7   10    3 |    27   28   25   22   39   24   26   25   27   24    24
  14  |    9   13    8   11   14    4    9   10    8    9    3 |    26   27   22   25   31   22   25   26   28   23    24
  15E |    8   13    7   11   19    5   14   12   16   14    4 |    21   22   17   18   22   15   21   18   21   21    16
  16E |   10   18    8   16   26    5   10   16   10   13    5 |    31   26   23   30   35   24   27   32   26   23    26
  17  |    7    9   13   10   17    4   11   14   15   10    4 |    28   28   23   28   39   26   29   31   28   23    26
  18  |    9   14   10   14   17    5   11   14   14   13    4 |    27   31   22   32   37   23   27   29   25   22    25
  19  |    8   17   12   14   20    4   13   13   15   11    4 |    24   29   23   22   33   21   28   28   27   24    23
  20  |    7   15   11   15   20    5   12   12   12   17    4 |    30   31   30   35   44   32   33   35   32   32    30
  21  |    7   12   11   10   14    4    8   12   17   14    4 |    31   31   30   34   40   28   29   34   30   31    30
  22  |   10   14   10   12   20    6    9   13   13   15    4 |    39   39   33   40   54   35   39   40   36   35    37
  23  |    7   14    9   17   18    5   11   10   16    9    4 |    49   50   50   46   51   47   48   48   51   52    48
  24  |    5   13   14    9   17    5   10   13   11   14    4 |    27   27   28   25   30   23   29   29   25   22    25
  25E |    7   13   15    9   18    6   13   11   15    9    4 |    27   26   32   26   27   23   28   27   32   23    27
  26  |    8   14   13   15   11    7    9   11   11   14    4 |    20   22   23   20   25   19   22   24   24   23    20
  27  |   11   14   12   14   16    6    9   12   10   10    4 |    33   32   32   27   27   25   32   28   29   23    28
  28E |    8   13    6   10   15    5   11   12    9   10    3 |    23   24   18   23   26   17   24   23   20   18    20
  29  |   14   19   13   16   12    6   15   18   17   18    5 |    35   41   36   34   32   30   39   31   44   32    34
  30  |    4   11   11    9   12    5    8   10    8   14    3 |    26   30   28   22   30   23   28   26   25   26    26
  31  |    9   12   14   18   19    6   10   12   12   11    4 |    30   35   26   37   38   26   34   31   28   24    29
  32  |    8    9   11    8   18    5    9   12    7    9    3 |    24   27   23   19   25   19   25   21   20   18    21
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |    8   13   11   13   17    5   11   13   13   12      |T   38   38   35   37   44   34   38   38   37   36    36
 WRMS |    8   13   11   11   16    5   11   12   11   12      |NE  33   33   30   32   40   29   33   34   32   31    31
 MEDI |    8   13   11   12   17    5   10   12   12   12      |MD  30   31   28   30   35   25   29   31   28   24    27

Table 3.1818.1   GPS week: 1818   Day: 1   MJD: 56971.000                            

        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   10   12   12   14    7   11   10   13   14    4 |    34   41   34   34   50   37   42   38   37   41    36
   2  |   10   11    9   14   14    4    7    9   13   13    4 |    22   24   21   23   25   21   23   21   20   21    20
   4  |    7    8   11   16    9    5    8   10   13   14    3 |    21   24   24   23   29   24   26   26   24   25    22
   5  |    6   11   12   15   15    5   10    9   11   11    3 |    16   26   19   15   26   16   23   16   18   18    17
   6  |   13    8   10   10   14    6   10   11   13    9    4 |    35   43   36   37   50   37   44   36   41   35    38
   7  |    8   11   10   16   16    3    9   12   15   12    4 |    24   31   23   27   30   21   28   24   25   20    23
  X8  |   10   13   12   17  ---    6   11   14   20  ---    5 |    23   20   22   23  ---   20   18   23   23  ---    19
   9  |   12   11   12   17   19    9   11   11   16   14    4 |   148  152  147  156  150  149  151  152  151  146   150
  10  |   14   17   10   17   29    8   12   16   12   18    5 |    93   88   89   90   81   86   88   86   91   87    87
  11  |    9    9   13   14   13    6   10   11   12   23    4 |    25   36   30   28   42   30   36   32   29   42    30
  12E |   11   21    6   14   16    5   17   16   12   15    5 |    26   33   25   30   28   25   30   28   30   27    26
  13  |    6   10    9   18   21    4   10    8   10   12    4 |    22   29   20   21   37   19   27   20   22   20    21
  14  |    7   12    9   11   16    6    9   12   13   14    4 |    29   28   25   27   31   26   28   25   27   28    26
  15E |    9   13    8   13   16    6   12   14   14   12    4 |    22   25   18   21   26   18   24   22   26   19    20
  16E |    9   13    8   14   25    6   12   19   12   15    5 |    24   29   24   25   37   23   27   23   25   24    23
  17  |    8   10   12   11   17    6   11   11   13   10    4 |    23   30   19   22   34   21   28   24   22   21    22
  18  |   10   13   10   15   17    4   12   14   12   16    4 |    21   27   20   25   30   20   27   23   24   17    21
  19  |    9   16   10   13   18    3   12   14   13   17    4 |    17   30   21   18   30   19   27   23   20   22    20
  20  |    8   14   11   14   21    7   11   10   18   19    5 |    20   28   23   24   34   25   26   26   32   24    22
  21  |    7   11   12   12   18    6   11   11   16   14    4 |    28   24   27   26   31   24   28   27   28   29    26
  22  |    8   13    9   12   16    6   10   12   13   15    4 |    35   36   31   35   45   33   37   34   33   32    33
  23  |    7   11    8   19   17    7   10   10   12   13    4 |    73   76   74   75   73   74   73   75   77   75    74
  24  |    9   12   14    8   14    4   10   14   13   18    4 |    21   28   24   19   26   19   25   22   24   18    21
  25E |    7   17   14   11   18    5   10   12    9    7    4 |    20   26   28   20   23   19   24   18   19   20    21
  26  |    9   14   11   12   14    5   10   11    8   14    4 |    19   25   22   19   22   20   23   22   23   25    20
  27  |   13   13   14   13   20    5    9   13   14   11    4 |    33   30   32   27   29   25   29   25   28   28    27
  28E |    7   11    8    9   15    5   10   13   12   13    3 |    22   27   19   16   26   20   26   23   23   25    22
  29  |   12   18   14   16   14    6   14   15   11   12    5 |    32   38   33   32   31   29   35   28   33   31    30
  30  |    8   10   10   16   15    6    9   10   12   11    4 |    24   29   24   23   27   21   27   22   25   29    23
  31  |   14   13   13   13   17    7    9   15   17   16    5 |    26   36   24   29   35   23   33   26   29   29    26
  32  |    6   13   10    9   17    5    7   10   10   10    3 |    19   23   19   16   21   15   21   18   18   22    17
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |    9   13   11   14   17    6   11   12   13   14      |T   32   36   32   32   38   30   35   32   33   33    31
 WRMS |    9   13   11   13   16    5   11   11   12   13      |NE  27   32   27   27   34   26   31   27   29   28    27
 MEDI |    9   12   10   14   16    6   10   12   13   14      |MD  24   29   24   25   30   23   27   24   25   25    23

Table 3.1818.2   GPS week: 1818   Day: 2   MJD: 56972.000                            

        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   11   14   13   10    6    9   10   12   12    3 |    40   46   37   41   53   43   46   46   43   46    42
   2  |   11   12   10   12   12    4    9   12   11   17    4 |    24   25   25   26   26   26   23   27   20   27    23
   4  |    6    7   11   16    8    4    8    9   16   13    3 |    28   30   29   31   36   30   29   34   30   32    29
   5  |   11   16   12   14   17    5   12   10   16   12    4 |    21   29   24   17   24   20   24   19   22   20    19
   6  |   10   12   10   14   14    5   11   10   15   10    4 |    42   49   41   43   55   45   46   45   41   45    43
   7  |   10   11   11   16   14    4   10   12   13   12    4 |    29   34   28   28   31   25   31   27   27   22    27
  X8  |   25   14   13   12  ---    8   12   11   15  ---    6 |    33   28   26   26  ---   22   23   25   25  ---    23
   9E |   21   12   15   18   20   10   11   11   13    9    5 |   167  165  161  166  154  157  163  161  164  160   162
  10  |   14   13   12   13   15    9   10   16    8   15    4 |    50   50   51   50   48   50   45   50   47   50    48
  11  |    9   10   14   20   15    5    9   12   16   21    5 |    34   39   33   33   46   35   38   37   30   43    35
  12E |   10   17    7   12   15    5   13   15   12   15    4 |    34   35   28   35   32   29   35   33   35   32    32
  13  |    9   10   11   14   19    5   10   10   11   11    4 |    26   31   27   21   38   26   28   24   26   26    25
  14  |    8   11   10   12   13    6   10   11   15   13    4 |    22   22   19   19   23   19   20   20   23   20    18
  15E |   13   14   10   14   14    5   13   12   15   14    4 |    25   29   21   24   27   23   23   28   25   31    24
  16E |   14   15    9   19   23    5   14   10   13   15    5 |    28   27   21   25   32   20   22   21   23   24    21
  17  |    9   11   11    9   17    6   11    9   11   14    4 |    27   34   23   23   37   25   30   27   25   27    25
  18  |    9   15   11   15   16    7   11   13   14   17    4 |    22   28   20   24   29   23   26   25   25   22    22
  19  |   10   18   11   15   20    4   14   14   13   18    5 |    23   35   25   23   28   22   27   25   22   25    23
  20  |   11   13   12   12   18    5   11   12   16   18    4 |    27   31   27   30   36   29   29   31   36   31    28
  21  |    9   13   11   12   13    7    9   10   14   16    4 |    22   25   24   25   28   22   24   27   21   27    23
  22  |    9   10   11   11   19    6    8   10   13   19    4 |    33   37   29   33   48   32   37   35   30   32    33
  23E |   19   11    8   21   21    8    9   14   11   11    5 |   112  112  109  112  113  105  110  105  110  108   109
  24  |   10   11   16    8   16    6   10   13   12   21    4 |    24   30   25   22   26   24   27   24   27   25    24
 X25E |    7  ---   14   11   15    6   13   10   10   12    4 |    32  ---   34   27   26   25   30   26   28   30    29
  26  |    9    8   13   13   13    5    8   11   13   17    4 |    23   30   26   19   24   23   22   26   24   32    23
  27  |   12    8   14   16   19    5    9    8   10   16    4 |    32   33   30   28   25   26   29   23   26   27    27
  28E |    9   11    9   10   18    6    9   16   13   13    4 |    28   34   25   21   28   25   30   31   29   33    28
  29  |   10   17   14   17   16    8   14   14   16   15    5 |    32   43   34   32   29   29   37   28   35   31    31
  30  |    5   12   13    7   11    5    8    9   12   11    3 |    26   31   28   22   29   23   28   26   24   30    26
  31  |   11   14   15   17   16    7   11   12   13   14    5 |    33   37   25   33   35   25   34   27   29   29    29
  32  |    9   16   12   11   17    5    6   10   13   12    4 |    17   23   18   15   21   15   19   16   21   20    16
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |   11   13   12   14   16    6   10   12   13   15      |T   36   40   34   34   39   33   36   35   35   36    34
 WRMS |   10   13   12   13   15    6   10   11   13   15      |NE  29   33   28   28   34   27   30   29   28   30    28
 MEDI |   10   12   11   13   16    5   10   11   13   14      |MD  28   31   27   26   29   25   29   27   27   30    27

Table 3.1818.3   GPS week: 1818   Day: 3   MJD: 56973.000                            

        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   11   13   12   13    7   10    8   11   15    4 |    46   49   41   44   57   46   48   50   43   52    46
   2  |   11   10   10   11   13    4    8    9    8   14    3 |    21   28   25   28   30   25   26   28   25   27    25
   4  |    4    6   11   17   11    4    7    9   11   13    3 |    32   30   31   31   37   31   28   36   27   33    30
   5  |   10   16   14   13   18    6   10   10   12   11    4 |    18   27   23   18   26   18   23   16   25   17    18
   6  |    6   11   12    8   13    5   11    8   11   10    3 |    46   56   47   50   61   50   52   52   44   51    49
   7  |   11   11   11   14   15    4    9   13   13   10    4 |    29   37   27   30   33   25   32   28   32   24    28
  X8  |   12   12   12   14  ---    6  ---    5   13  ---    5 |    28   26   25   27  ---   21  ---   21   23  ---    24
   9E |    7   10   13   12   17    5    9    8   10   10    3 |   117  120  115  123  112  117  119  116  115  116   117
  10  |   11   12   10    9   16    6    9   18   11   11    4 |    62   62   60   60   63   62   62   63   62   59    61
  11  |    8    9   15   14   17    5    9   11   13   19    4 |    34   40   33   33   45   34   36   38   32   41    35
  12E |   10   18    9   11   18    5   15   16   11   11    4 |    33   36   29   36   33   30   34   34   33   29    32
  13  |   10   10    9   12   18    4    9    9   10    9    3 |    29   32   26   22   39   27   28   26   30   27    27
  14  |    9   12    8   10   13    5    8   12    9   12    3 |    26   30   28   28   35   26   27   27   26   27    26
  15E |   17   16    9   14   19    6   15   12   13   11    5 |    30   29   22   20   30   23   25   22   25   23    23
  16E |    9   18    6   16   22    4   10   10   14   15    4 |    22   30   22   27   30   21   25   21   21   21    22
  17  |    9    8   12    8   14    4   11    9   10   13    3 |    24   30   20   19   34   21   29   25   24   23    23
  18  |   13   14   11   14   15    6   11   14   12   18    4 |    34   34   27   33   40   27   32   28   29   25    29
  19  |    9   15   12   14   20    4   14   11   16   14    5 |    26   33   25   23   27   22   29   24   23   22    23
  20  |    9   10   11   12   17    3   12   12   12   14    4 |    31   35   32   34   42   33   32   36   32   33    32
  21  |   20   13   12   10   14    9    9   10   12   14    4 |    37   30   30   27   34   27   28   29   24   30    28
  22  |    8   12   11   13   19    5   10    8   17   14    4 |    42   41   38   44   54   39   41   41   43   38    40
  23E |    7   10    8   18   28    5   11   10    7   10    4 |    72   73   74   68   84   72   71   72   75   74    72
  24  |   14   11   17    9   15    8   10   12   11   15    4 |    30   30   31   25   30   26   28   28   25   24    27
  25E |    9   16   13   10   16    6   12   11    9    9    4 |    25   34   34   27   33   25   31   27   29   28    28
  26  |   14   15   14   13   12    6    9    9   14   14    4 |    28   29   29   22   28   25   24   25   32   29    25
  27  |    9   10   15   13   17    4    8    6   13   14    4 |    32   38   39   33   29   30   37   28   31   28    32
  28E |   11   10    8   13   16    6    9   10    9   11    3 |    33   36   32   34   38   31   37   35   37   34    34
  29  |   20   17   13   17   15    8   16   13   11   13    5 |    39   42   39   35   32   32   40   34   38   35    35
  30  |    8   12   12    8   13    7    8    9   11   11    3 |    29   35   29   24   30   26   31   26   30   29    28
  31  |   13   14   13   16   16    5   12   13   12   13    4 |    35   38   31   36   36   28   36   29   33   30    32
  32  |    6    7   11    9   17    4    8    8   11   10    3 |    18   22   21   21   24   19   20   16   26   21    19
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |   11   13   12   13   16    5   10   11   12   13      |T   35   39   35   34   40   33   37   34   35   35    34
 WRMS |   11   13   12   11   15    5   10   10   11   14      |NE  32   35   31   31   37   30   33   31   31   31    31
 MEDI |    9   12   12   13   16    5   10   10   11   13      |MD  31   34   30   30   34   27   31   28   30   29    28

Table 3.1818.4   GPS week: 1818   Day: 4   MJD: 56974.000                            

        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   11   15   14   14    5   10    9   13   13    4 |    40   43   33   37   47   40   41   41   39   42    39
   2  |    8   10   12   12   12    5   10    9   13   14    3 |    23   20   20   25   24   20   20   23   28   23    21
   4  |    7    7   11   20   10    4    8   11   20   13    4 |    26   26   26   27   30   26   24   28   29   25    25
   5  |    8   11   13   14   17    6   13   11   14   11    4 |    12   20   15   14   22   12   19   12   21   14    12
   6  |   18   11   13   10   13    7   12   10   11   11    4 |    51   45   38   43   51   41   44   44   37   44    43
   7  |    9   10   14   12   11    4   11   10    8   12    3 |    27   30   24   25   30   21   27   23   26   20    23
  X8  |    8   12   14   15  ---    6   11    7   14  ---    4 |    21   21   19   18  ---   18   20   17   19  ---    17
   9E |    9   10   14   11   19    6    9   10    9   11    4 |    86   90   88   88   85   84   88   85   89   87    87
  10  |   10   10   13   10   14    4    9   19    9    8    4 |    32   31   35   37   40   33   30   34   33   32    32
  11  |    9   10   15   14   15    4    9   11   21   20    5 |    27   34   29   27   37   29   32   29   31   36    28
  12E |   10   19    8    9   13    5   15   14   11   14    4 |    30   31   27   32   31   28   32   33   35   31    29
  13  |    7    9   11   13   15    4   12    9    6   11    3 |    25   26   22   23   35   21   24   21   22   25    23
  14  |    5   10    9   10   20    6   11   11    9   13    4 |    27   21   22   25   26   22   23   21   27   22    22
  15E |   10   12    8   13   19    6   18    9   14   13    4 |    23   23   18   22   28   19   25   21   21   23    20
  16E |    8   17    8   13   21    4   10   10   13   17    4 |    20   22   16   21   28   15   20   19   22   24    18
  17  |    7   12   14    7   13    4   12    9   12   12    3 |    22   25   19   18   29   18   26   21   21   20    20
  18  |    8   15   11   16   15    6   16   11   10   17    4 |    25   27   21   28   32   20   26   23   24   18    22
  19  |   13   14   12   16   17    4   13   15   14   14    5 |    20   25   17   17   25   15   23   14   19   15    16
  20  |   10   13   13   13   17    5   11   10   12   17    4 |    29   29   28   30   37   28   29   30   30   29    27
  21  |    8   10   12   10   13    5   10   11   12   14    4 |    27   24   24   27   30   22   23   30   30   30    25
  22  |    7   15   12   14   18    9   11   10   14   18    4 |    60   57   56   61   68   55   60   60   57   53    58
  23E |    8    9    9   17   16    4    9    9   10   13    4 |    46   48   47   43   49   45   47   44   44   50    45
  24  |    8   12   15    7   13    6   10   11   10   21    4 |    23   28   27   21   28   20   25   25   24   25    23
  25E |    8   14   15    8   13    4   13   10   13    9    4 |    26   27   31   20   26   22   24   22   31   25    24
  26  |    7   11   13   19   12    6   11   10   14   17    4 |    18   23   23   27   22   19   21   22   26   26    20
  27  |    8   10   14   11   15    6    9    7   10    8    3 |    29   31   33   25   29   23   30   24   27   27    27
  28E |    6    9    8   11   13    5   12   12   11   12    3 |    22   26   19   23   24   19   24   23   23   23    21
  29  |   11   17   13   17   13    9   18   14   13   11    5 |    29   37   32   29   31   25   38   28   36   27    29
  30  |    4   10   13    9    8    4    9    7    7    9    3 |    24   28   27   21   28   22   26   21   24   24    23
  31  |    8   15   13   15   17    6   10   13   12   11    4 |    30   36   28   31   38   25   33   27   26   27    28
  32  |    6    6   12   11   17    4    7    9    9   10    3 |    19   19   19   16   19   14   18   16   14   18    16
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |    9   12   12   13   15    5   12   11   12   13      |T   29   31   28   29   34   26   30   28   30   29    27
 WRMS |    8   12   12   12   14    5   12   10   11   14      |NE  27   29   26   27   33   24   28   26   27   27    25
 MEDI |    8   11   13   13   14    5   11   10   12   13      |MD  26   27   26   25   30   22   26   23   27   25    23

Table 3.1818.5   GPS week: 1818   Day: 5   MJD: 56975.000                            

        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   13   14   16   15    6   11    9    9   13    4 |    33   37   28   32   43   31   37   33   30   33    31
   2  |   10   10   11    8   13    4    9   11    8   12    3 |    18   21   20   21   23   18   20   22   21   21    18
   4  |    8    8   10   18   12    3    7   11   16   13    4 |    23   23   21   24   25   23   22   23   22   19    19
   5  |    7   11   14   11   15    4   14   11    9   14    4 |    12   21   15   17   20   10   20   11   13   13    11
   6  |    6   12   13    9   15    4   12    9   11    7    3 |    39   42   33   37   47   36   43   39   33   37    37
   7  |    8    9   13   13   19    5    9   12    9   14    4 |    25   28   22   25   29   21   27   22   22   18    21
  X8  |    9   10   14   15  ---    7   10    9   14  ---    4 |    25   22   22   22  ---   21   20   17   25  ---    19
   9E |    8    9   14    8   21    5   10   11   13   10    4 |    70   69   69   73   65   70   72   70   70   68    69
  10  |    7    9   13   10   17    4    9   19    8    8    4 |    43   45   44   47   48   43   45   49   41   43    44
  11  |    9   10   15   17   17    4   10   10   14   21    4 |    23   31   25   26   35   24   30   24   22   32    23
  12E |   11   19    7    9   14    5   15   17   14   16    5 |    24   25   17   24   23   21   27   25   27   23    21
  13  |    6   11    7   13   21    3   11    9    7    9    3 |    20   24   17   23   34   18   22   16   19   18    18
  14  |    6   12    7    7   19    5    9   11    9    9    3 |    24   22   20   23   27   21   22   19   23   18    19
  15E |    9   17    9   12   20    5   14   10   10   10    4 |    23   25   19   24   27   19   24   18   23   17    19
  16E |    9   15    8   13   21    4   13   12   14   13    4 |    18   22   16   20   25   17   19   17   21   20    16
  17  |    7   10   14   10   17    4   13   12   12   14    4 |    20   26   18   22   30   17   25   20   22   18    19
  18  |    8   14   11   13   17    7   14    9   12   20    4 |    29   31   25   30   36   25   32   27   30   26    27
  19  |   10   15   12   17   20    5   12   15   14   15    5 |    19   26   19   23   24   19   24   15   19   14    16
  20  |    8   13   13   11   17    5   15   12   13   18    4 |    23   28   23   23   30   23   27   25   24   16    21
  21  |    8   11   11    9   13    5    9   13   10   13    3 |    26   26   24   26   26   22   24   30   23   30    24
  22  |    7   13   12   12   17    5   11    7   11   20    4 |    41   44   37   40   50   39   43   38   42   42    40
  23E |    5   14    9   16   24    5   11   12   13   10    4 |    31   36   28   31   38   30   32   30   34   30    30
  24  |    6   10   14    7   13    4    9    9   13   15    3 |    19   23   26   21   24   18   22   18   24   17    19
  25E |    6   12   16    9   15    5   11   12   15    7    4 |    45   46   51   44   47   44   48   44   51   43    46
  26  |    6   16   13   11   21    5   10   12   14   13    4 |    19   24   23   26   26   18   23   22   23   23    19
  27  |   12    9   14   12   17    5   11    5   15   11    4 |    29   26   31   26   25   24   27   24   29   21    24
  28E |    6   11    9   11   15    5   12   12    9   10    3 |    23   27   17   23   25   19   26   24   24   26    22
  29  |    9   17   12   16   13    6   18   13   14   11    5 |    27   32   28   29   27   24   33   24   28   20    24
  30  |    7   12   12   10   15    4    8    8    9    8    3 |    23   26   24   23   28   20   26   19   21   22    21
  31  |   10   12   11   16   18    5   12   12   13   14    4 |    28   32   25   31   35   23   32   23   20   23    24
  32  |    6    7   12   12   18    5    8   11   12   12    3 |    21   21   18   18   19   16   21   17   15   18    16
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |    8   12   12   12   17    5   11   12   12   13      |T   27   30   25   28   32   24   29   25   27   25    25
 WRMS |    8   12   12   12   17    5   11   11   10   13      |NE  25   28   24   26   31   23   28   24   24   23    23
 MEDI |    8   12   12   12   17    5   11   11   12   13      |MD  24   26   23   24   27   21   26   23   23   21    21

Table 3.1818.6   GPS week: 1818   Day: 6   MJD: 56976.000                            

        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   10   12   13   14    7   10   13   15   12    4 |    50   53   45   49   63   51   53   55   46   51    50
   2  |    7   10   10    9   14    4    9   11   12   13    3 |    27   25   27   29   36   26   24   30   26   27    26
   4  |    6    7   10   18   13    5    8   13   22   10    4 |    32   30   29   34   39   32   29   38   28   33    30
   5  |    7    9   12   12   20    4   12   13   13   11    4 |    12   21   16   13   25   11   22   14   16   11    12
   6  |    6   12   11   10   16    5   12   12   16   10    4 |    55   60   54   55   71   56   57   61   52   57    56
   7  |   10    7   12   13   18    5    8   17   14   11    4 |    28   31   26   28   32   23   30   26   31   20    25
  X8  |   11   13   13   14  ---   10   11    8   18  ---    5 |    25   27   23   22  ---   20   21   22   31  ---    22
   9E |    8    9   14   11   22    5    9   14   15   11    4 |   127  131  129  130  124  126  131  126  128  126   127
  10  |    7    9   10   11   21    4    9   20    7   14    4 |    47   50   49   51   59   50   48   57   51   52    50
  11  |    8    9   15   13   14    6   10   14   20   17    4 |    32   38   32   34   46   34   37   40   30   39    33
  12E |    9   16    7   12   16    6   17   18   10   14    4 |    33   35   28   36   33   31   36   37   36   34    32
  13  |    5   11   10   11   28    4    8    9    7   12    4 |    28   30   29   25   44   27   28   26   31   27    27
  14E |    7   10    9    9   17    6   10   10   10   12    3 |    30   26   30   27   28   27   31   24   30   22    26
  15E |    8   19    6   15   17    5   15   10   13    9    4 |    22   27   20   23   26   20   24   21   26   23    20
  16E |   11   13    9   19   23    5   12   14   14   13    5 |    22   22   18   27   29   16   23   20   22   22    19
  17  |    7   11   12   11   19    4   11   12   18   14    4 |    24   27   21   24   35   20   28   23   25   21    22
  18  |    8   13   10   14   14    5   14   11   13   16    4 |    28   28   25   35   37   26   29   30   29   25    26
  19  |    9   14   10   16   20    7   14   15   18   17    5 |    20   25   19   22   24   15   24   20   19   16    16
  20  |   11   11   12   11   21    4   12   16   13   15    4 |    33   35   31   35   45   35   34   37   38   32    33
  21  |    8    9   10   10    9    5   10   14   15   17    4 |    27   25   29   29   34   26   25   33   28   33    27
  22  |    7   11   11   13   17    4   12   10    9   16    4 |    47   45   47   51   58   47   47   45   45   42    46
  23E |    6    9    7   17   22    4   10   20   10   10    4 |    58   61   62   56   63   59   64   61   61   62    59
  24  |    7    9   13    9   17    4   11   10   13   14    4 |    24   28   27   23   28   21   27   23   25   23    23
  25  |    9   11   14   11   13    9   13   11    8   10    4 |    61   63   64   61   61   57   65   59   67   57    62
  26  |    8   20   13   12   18    9   14   14   16   16    5 |    23   31   28   25   28   24   28   29   35   28    25
  27  |   15   12   13   13   16    6   10    6   16   10    4 |    37   33   37   31   26   27   33   29   35   29    31
  28E |    7    8    8    9   19    6    8   11   10    8    3 |    22   25   19   24   26   20   23   21   26   19    20
  29  |    8   14   12   16   12    6   15   15   19   14    5 |    31   38   36   31   30   28   40   32   36   30    32
  30  |    8   12   12    8   15    5   10   10    9    9    3 |    27   29   27   27   30   24   29   23   30   22    25
  31  |   10   13   12   16   22    6   11   15   11   12    4 |    30   34   28   34   38   26   34   30   31   28    29
  32  |    9    7   12   10   18    4    6   13   12   10    3 |    19   19   18   19   24   16   20   16   20   15    16
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |    8   11   11   13   18    5   11   13   14   13      |T   34   37   34   35   41   32   36   35   36   34    33
 WRMS |    8   11   11   12   17    5   11   13   12   12      |NE  30   33   30   31   38   28   32   32   32   30    29
 MEDI |    8   11   12   12   17    5   11   13   13   12      |MD  28   30   28   29   34   26   29   30   31   28    27



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 4.1818   GPS week: 1818   MJD: 56970.0-56976.0

CENT| CLK EPO  |        BRUX       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 2975 |U    5     6    14 |U    6     8    26 |U    6     6    13 |
emr | emr 2962 |     8     8    20 |U    8    10    27 |     6     6    17 |
esa | esa 2976 |     6     6    18 |U    6    10    27 |     7     6    17 |
gfz | gfz 2976 |U    6     7    15 |U    7     8    27 |U    7     6    15 |
grg | grg 2878 |     9     9    18 |U    9     9    30 |U    8     9    18 |
igr | igr 2976 |     6     6    15 |     6     8    26 |     6     5    14 |
igs | igs 2976 |     6     6    15 |     6     8    26 |     6     6    14 |
jpl | jpl 2961 |     7     7    20 |U    7     9    28 |U    6     5    17 |
mit | mit 2976 |     6     7    16 |U    7     9    28 |U   12    10    25 |



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 5.1818.0   GPS week: 1818   Day: 0   MJD: 56970.0

CENT| CLK EPO  |        BRUX       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 2975 |     5     5    11 |     7     9    26 |     7     7    15 |
emr | emr 2976 |     6     4    18 |     8    13    29 |     9    10    17 |
esa | esa 2976 |     7     4    14 |     6    11    31 |     8    10    18 |
gfz | gfz 2976 |     6     5    13 |     7     9    30 |     7     8    17 |
grg | grg 2879 |     7     9    17 |    10    11    34 |     8    10    20 |
igr | igr 2976 |     6     5    13 |     6    10    28 |     8     9    16 |
igs | igs 2976 |     5     4    12 |     6    10    28 |     7     8    16 |
jpl | jpl 2975 |     7     5    17 |     7    10    32 |    10     9    19 |
mit | mit 2976 |     7     6    18 |     8     9    26 |    11    11    18 |

Table 5.1818.1   GPS week: 1818   Day: 1   MJD: 56971.0

CENT| CLK EPO  |        BRUX       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 2976 |     4     6    12 |     6     8    19 |     6     6    14 |
emr | emr 2976 |     8    10    18 |     7     8    20 |     6     5    18 |
esa | esa 2976 |     6     8    15 |     6     9    20 |     7     6    18 |
gfz | gfz 2976 |     5     8    12 |     6     8    19 |     7     5    16 |
grg | grg 2880 |     8     8    18 |     9     7    23 |    10    10    24 |
igr | igr 2976 |     5     7    12 |     5     8    20 |     6     5    16 |
igs | igs 2976 |     5     8    12 |     6     8    19 |     6     5    15 |
jpl | jpl 2975 |     6    10    15 |     6     9    25 |     6     4    17 |
mit | mit 2976 |     6     9    13 |     6    11    23 |     6     7    21 |

Table 5.1818.2   GPS week: 1818   Day: 2   MJD: 56972.0

CENT| CLK EPO  |        BRUX       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 2976 |     6     8    13 |     5     6    25 |     5     5    14 |
emr | emr 2880 |     9    12    18 |     8     7    30 |     6     6    20 |
esa | esa 2976 |     6     7    15 |     5     7    31 |     6     6    19 |
gfz | gfz 2976 |     6     9    14 |     6     7    30 |     7     6    17 |
grg | grg 2880 |     9    12    20 |     9     7    30 |     8    10    20 |
igr | igr 2976 |     6     8    13 |     5     5    29 |     6     5    15 |
igs | igs 2976 |     6     9    13 |     5     5    27 |     5     6    16 |
jpl | jpl 2976 |     8     9    17 |     6     5    28 |     6     4    14 |
mit | mit 2976 |     7    10    14 |     6     8    26 |     7     8    20 |

Table 5.1818.3   GPS week: 1818   Day: 3   MJD: 56973.0

CENT| CLK EPO  |        BRUX       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 2976 |     5     6    18 |     6    10    25 |     5     5    13 |
emr | emr 2976 |     8     6    21 |     8    13    26 |     7     7    14 |
esa | esa 2976 |     8     5    22 |     6    13    23 |     8     7    17 |
gfz | gfz 2976 |     7     6    17 |     7    10    25 |     8     6    13 |
grg | grg 2880 |    10    11    15 |     9    13    28 |     8     9    15 |
igr | igr 2976 |     6     5    20 |     6    11    23 |     6     6    13 |
igs | igs 2976 |     7     6    17 |     6    11    24 |     6     6    12 |
jpl | jpl 2880 |     8     6    22 |     6    11    25 |     6     5    15 |
mit | mit 2976 |     8     7    17 |     7     9    27 |     7     7    13 |

Table 5.1818.4   GPS week: 1818   Day: 4   MJD: 56974.0

CENT| CLK EPO  |        BRUX       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 2976 |     3     4    13 |     7    10    38 |     6     5    13 |
emr | emr 2976 |     7     7    24 |     8    10    32 |     5     6    19 |
esa | esa 2976 |     5     6    19 |     7    12    37 |     6     5    17 |
gfz | gfz 2976 |     5     5    15 |     7     9    39 |     6     5    14 |
grg | grg 2876 |     8     7    18 |    10    11    36 |     7     9    17 |
igr | igr 2976 |     4     4    14 |     7     9    36 |     5     4    15 |
igs | igs 2976 |     4     5    16 |     7     9    36 |     5     5    15 |
jpl | jpl 2976 |     5     7    25 |     8    11    38 |     5     4    19 |
mit | mit 2976 |     6     6    16 |     8     9    37 |    40    24    74 |

Table 5.1818.5   GPS week: 1818   Day: 5   MJD: 56975.0

CENT| CLK EPO  |        BRUX       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 2976 |     7     8    20 |     6     7    22 |     5     6    10 |
emr | emr 2976 |     8     8    24 |     7     9    26 |     5     5    15 |
esa | esa 2976 |     7     8    22 |     6    10    24 |     6     6    14 |
gfz | gfz 2976 |     7     8    20 |     6     8    26 |     6     6    11 |
grg | grg 2873 |    10    10    20 |     8     8    27 |     7    10    15 |
igr | igr 2976 |     7     8    20 |     5     7    23 |     5     5    10 |
igs | igs 2976 |     7     8    20 |     6     8    23 |     5     6    12 |
jpl | jpl 2975 |     7     8    24 |     6    10    25 |     6     6    16 |
mit | mit 2976 |     7     8    19 |     6    10    26 |     6     6    13 |

Table 5.1818.6   GPS week: 1818   Day: 6   MJD: 56976.0

CENT| CLK EPO  |        BRUX       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 2976 |     4     4    12 |     7     7    24 |     5     5    13 |
emr | emr 2976 |     6     6    20 |     7     8    23 |     5     5    17 |
esa | esa 2976 |     5     5    18 |     7     8    24 |     6     5    18 |
gfz | gfz 2976 |     5     5    14 |     7     7    24 |     5     3    13 |
grg | grg 2880 |     8    10    21 |     9     9    31 |     6     6    15 |
igr | igr 2976 |     5     4    14 |     7     7    24 |     5     3    15 |
igs | igs 2976 |     5     5    15 |     7     7    23 |     5     4    15 |
jpl | jpl 2976 |     6     4    22 |     8     8    23 |     6     5    18 |
mit | mit 2976 |     5     5    13 |     8     7    30 |     6     4    15 |


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 6.1818   GPS week: 1818   MJD: 56970.500-56976.500

                                                         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       5      -5     -87      3 |       7     15
            |      13      16     113      80      6 |       2
emr   uuuuu |      24      24      89      96    -10 |      49     51
            |      25      24     115      82      6 |       4
esa   uuuuu |       3     -10      94     -55     -1 |      19     24
            |      11      14      52      32      4 |       2
gfz   uuuuu |       0     -29      16      48      3 |     -65     66
            |      26      33     112     121      4 |       2
grg   uuuuu |      -9      -5      -1     -46     -6 |      30     34
            |      15      17      82     128      5 |       5
igr   xxxxx |     -31      -4      27     -23     -4 |       2     16
            |      24      12      59      40      4 |       2
irf   xxxxx |      -5       4     -71     -66      1 |      -3     14
            |      12       5      20      28      2 |       2
jpl   uuuuu |      -6      -6     -21      80      0 |      33     37
            |      31      35     103      33     11 |       2
mit   uuuuu |     -18      21    -186    -168      0 |      11     18
            |      23      13      38      67      2 |       2
ngs   uuuuu |      34      -7      53     179     -3 |       9     15
            |      85      36     114     158      6 |       2
sio   uuxxx |      -5      -5     -16     -26      5 |      28     32
            |      22       9      40      65      9 |       2


Table 7.1818.0   GPS week: 1818   Day: 0   MJD: 56970.500

                                                         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 |     -16     -23      23     -36     -5 |       8     17
emr   uuuuu |      13      -1     158     189    -18 |      53     55
esa   uuuuu |     -10     -19     102     -51     -8 |      21     26
gfz   uuuuu |      45      32    -124     232      9 |     -65     67
grg   uuuuu |      -5      14    -130      98     -4 |      34     38
igr   xxxxx |       2      11      -7      29     -7 |       5     15
irf   xxxxx |     -16       4     -92    -113     -1 |      -1     13
jpl   uuuuu |      24      -5    -100      36     12 |      29     34
mit   uuuuu |     -56      11    -163    -292      2 |      14     19
ngs   uuuuu |      24      26     177     -71      5 |       9     15
sio   uuxxx |      -6      -7     -33     -13    -12 |      30     33

Table 7.1818.1   GPS week: 1818   Day: 1   MJD: 56971.500

                                                         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 |     -23      -6     -21      -3     -4 |       9     16
emr   uuuuu |     -18      18     182     -11    -12 |      53     55
esa   uuuuu |       0     -18     155      -2     -6 |      21     26
gfz   uuuuu |       1     -31      33     -14      2 |     -64     65
grg   uuuuu |     -17     -15     -51      70     -4 |      34     38
igr   xxxxx |     -18      -8      44     -25     -3 |       4     16
irf   xxxxx |      -5       8     -64     -29      1 |      -1     14
jpl   uuuuu |      41      50     -94      73     -3 |      32     36
mit   uuuuu |     -14      33    -174    -125      1 |      13     19
ngs   uuuuu |      37     -49      -4      37      6 |      10     15
sio   uuxxx |      -9      -5      16      77      7 |      29     33

Table 7.1818.2   GPS week: 1818   Day: 2   MJD: 56972.500

                                                         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 |       7      18     177    -102      3 |      10     16
emr   uuuuu |      66      60    -132     133     -5 |      52     55
esa   uuuuu |      14     -14     135     -98     -1 |      22     26
gfz   uuuuu |     -18     -74     179     -29      5 |     -63     64
grg   uuuuu |      -1     -16      76      -7     -1 |      34     38
igr   xxxxx |      -9       5     101     -23     -1 |       5     16
irf   xxxxx |       9       9     -42     -75      2 |      -1     14
jpl   uuuuu |     -37     -11     -74     118     15 |      34     37
mit   uuuuu |      -5      29    -167    -167      2 |      13     19
ngs   uuuuu |     -46     -33    -163     209     -7 |      12     17
sio   uuxxx |      20       7     -48      33      8 |      30     34

Table 7.1818.3   GPS week: 1818   Day: 3   MJD: 56973.500

                                                         AC LOD  AC LOD
CENT  FLAG  |   Xpole   Ypole     Xrt     Yrt    LOD |    BIAS  BIAS RMS
            |   [uas]   [uas]   [uas/d] [uas/d]  [us]|    [us]    [us]
------------+----------------------------------------+------------------
cod   uuuuu |     -20       6     -34    -238      5 |       8     15
emr   uuuuu |      22       6     100      54     -2 |      49     51
esa   uuuuu |      -3      22      38     -83      4 |      20     24
gfz   uuuuu |      -1     -37     114     -93      4 |     -65     66
grg   uuuuu |     -19     -24     -16      52     -7 |      31     34
igr   xxxxx |     -39     -20     100     -48     -1 |       3     16
irf   xxxxx |      11       9     -88     -52      1 |      -3     14
jpl   uuuuu |     -23      21      53     107      7 |      34     38
mit   uuuuu |      10      34    -248    -140     -1 |      11     17
ngs   uuuuu |       8     -41      62     420     -8 |      10     16
sio   uuxxx |      28     -17     -38     -91      3 |      28     33

Table 7.1818.4   GPS week: 1818   Day: 4   MJD: 56974.500

                                                         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 |     -28      27    -205    -106     10 |       7     14
emr   uuuuu |      29       7      52     143    -19 |      48     50
esa   uuuuu |       6     -16      33     -30      2 |      19     23
gfz   uuuuu |       0     -41      64      32     -4 |     -65     66
grg   uuuuu |     -18     -15     116    -172    -17 |      29     32
igr   xxxxx |     -46     -19     -19      16    -10 |       2     15
irf   xxxxx |     -14      -6     -49     -72     -1 |      -3     14
jpl   uuuuu |     -42     -12     167     101     -7 |      35     38
mit   uuuuu |     -31      -1    -131    -152     -3 |      11     17
ngs   uuuuu |     145      33     110     241     -3 |       8     16
sio   uuxxx |     -35      -8     -52     -19      3 |      27     32

Table 7.1818.5   GPS week: 1818   Day: 5   MJD: 56975.500

                                                         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 |     -22       6      -9     -16      7 |       6     13
emr   uuuuu |      20      24     210     167    -12 |      44     47
esa   uuuuu |      -8     -12      55     -60      3 |      17     21
gfz   uuuuu |     -40     -45     -72      12      2 |     -67     68
grg   uuuuu |     -25      -2      24    -208     -3 |      25     30
igr   xxxxx |     -68       3     -53     -15      2 |      -1     17
irf   xxxxx |     -19       2     -89     -80      3 |      -5     15
jpl   uuuuu |     -13     -25       9      88    -13 |      34     38
mit   uuuuu |     -32      21    -209    -213      0 |       9     16
ngs   uuuuu |     143      31      44     172     -6 |       6     15
sio   uuxxx |      -8     -11     -14     -95     13 |      25     30

Table 7.1818.6   GPS week: 1818   Day: 6   MJD: 56976.500

                                                         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       3      35    -106      8 |       5     13
emr   uuuuu |      35      51      55      -5     -6 |      43     46
esa   uuuuu |      20     -12     143     -59     -3 |      16     21
gfz   uuuuu |      13      -7     -81     199      4 |     -67     68
grg   uuuuu |      19      22     -28    -152     -6 |      23     28
igr   xxxxx |     -37       2      21     -92     -7 |      -1     17
irf   xxxxx |       2       4     -75     -43      3 |      -5     15
jpl   uuuuu |       5     -63    -109      38     -8 |      34     38
mit   uuuuu |       1      20    -207     -89      0 |       9     16
ngs   uuuuu |     -74     -14     148     246     -6 |       5     15
sio   uuxxx |     -23       5      59     -71     17 |      26     31



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