[IGSREPORT-23469] Wk 1835 IGS Final Orbits

IGS ACC igs.acc at noaa.gov
Thu Mar 26 09:05:26 PDT 2015


Author:  AC Coordinator / NOAA NGS

sum-file Version 2.0
Final IGS Orbit Combination - Week 1835   (Mar 08, 2015 - Mar 14, 2015)

Contacts: igs.acc at noaa.gov


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

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

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

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

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

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

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


SOFTWARE:
---------

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

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

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

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

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


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

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

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

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



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

igs1835[0-6].sp3  IGS GPS ephemeris files in SP3 format.
igs1835[0-6].clk  IGS GPS satellite and station clocks in clock RINEX format.
igs1835[0-6].cls  IGS GPS clock combination summary report.
igs18357.erp      Earth Rotation Parameters (ERP) and their rates as well as
                  Universal Time (UT1-UTC) and Length Of Day (LOD) associated 
                  with IGS ephemerides.
igs18357.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   | SYOG SYOG
                0  |  ESA   | NTUS NTUS TIXI
                0  |  GRG   | DAV1 KELY SYOG DAV1 KELY NKLG SYOG
                0  |  MIT   | HYDE
                1  |  COD   | MATE
                1  |  ESA   | BOGT MATE MATE SEY1
                1  |  GRG   | DAV1 KOUC MATE ONSA SYOG DAV1 KOUC ONSA SYOG
                1  |  MIT   | TSKB TSKB
                2  |  COD   | NTUS NTUS
                2  |  ESA   | SOFI SOFI
                2  |  GFZ   | HOLB HOLB
                2  |  GRG   | BOR1 DARW DAV1 GRAZ IRKJ ONSA TIDB TLSE BOR1 DAV1
                2  |  GRG   | GRAZ ONSA THTI TIDB TLSE
                2  |  JPL   | CAS1
                3  |  COD   | BRST CHUR DAV1 BRST CHUR DAV1
                3  |  ESA   | UNSA
                3  |  GFZ   | NRIL TLSE
                3  |  GRG   | DARW DAV1 HYDE DAV1 HYDE
                4  |  COD   | MAG0
                4  |  ESA   | MAG0
                4  |  GFZ   | 8
                4  |  GRG   | BRST ONSA WES2 WSRT BRST ONSA WSRT
                5  |  COD   | CAS1 CAS1
                5  |  GFZ   | GRAZ GRAZ
                5  |  GRG   | GRAZ IISC WES2 GRAZ IISC TLSE WES2
                6  |  ESA   | 8 8
                6  |  GFZ   | REUN BOGT REUN
                6  |  GRG   | BOGT FAIR GOPE GRAZ REUN BOGT DAV1 FAIR GOPE GRAZ
                6  |  GRG   | MONP REUN
                6  |  JPL   | BOGT
                6  |  MIT   | BAKO RBAY BAKO RBAY

 5. Starting on 22-Oct-2000 (GPS Week 1085-0; MJD=51839) all IGS clock products
    are based on the new clock combination scheme which uses the clock RINEX
    files as input if available, otherwise SP3 clocks are used. The AC clocks are
    corrected for the radial offsets of their satellite orbits compared to the
    combination.

 6. The following table lists all maneuvered satellites for this week. The
    solutions from COD and ESA, which modeled the maneuver, are used that day for
    combination, if available. An associated accuracy code of 0 (unknown) is given
    if only one AC is left (no redundancy). For the long arc evaluation the arc is
    split into two parts at the given maneuver epoch.
    
               PRN |    Date    | Ref. NANU
               ----+------------+----------
               G29 | 2015_03_12 | 2015016 

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

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

 9. Small rotations were applied to all the AC orbit and ERP values in order to
    align them to the current IGS reference frame. These RX, RY and RZ rotations
    were estimated in the IGS SINEX combination process, performed by the IGS
    Reference Frame Coordinator at the Institut Geographique National (IGN).
    Starting on 19-Aug-2012 (GPS Week 1702; MJD=56158), ACs began contributing
    products based on 1d SINEX integrations. As a result, the SINEX combinations
    are now done daily instead of weekly, and the associated daily rotations are
    applied here to the orbits and ERPs. The estimated 7 transformations, from
    which only the 3 rotations are applied to the orbit and ERP values, are:
    
            |     |    DX     DY     DZ      RX     RY     RZ     SCL
     Centre | Day |   [mm]   [mm]   [mm]   [uas]  [uas]  [uas]   [ppb]
     -------+-----+---------------------------------------------------
       COD  |   0 |    -.6    -.9   -2.4     -43     -1      6     .73
       EMR  |   0 |    1.2     .4   14.0      64    -14     62     .67
       ESA  |   0 |    1.1   -1.5    -.7      -2    -21     77     .64
       GFZ  |   0 |     .1   -1.1   -2.2     -26    -65     -4     .80
       GRG  |   0 |    7.8    -.1    3.5       7      8     13    1.13
       JPL  |   0 |    3.3    2.9   12.3      16      5      4     .98
       MIT  |   0 |    3.2   -2.3   -1.3      11     15    -39     .80
       NGS  |   0 |    4.7    -.1    4.8     -10    -22     26     .76
       SIO  |   0 |   -1.1     .7  -10.1     -10    -14    -35     .75

       COD  |   1 |   -1.1    -.8   -2.4     -55     17    -37     .69
       EMR  |   1 |    3.9    -.2   12.5      66    -13     43     .59
       ESA  |   1 |     .7   -1.3    -.7     -13    -22     40     .59
       GFZ  |   1 |     .4   -1.1    -.8     -25    -77    -31     .63
       GRG  |   1 |    8.2   -1.4   -5.2      16     -7     -3    1.04
       JPL  |   1 |   -1.9   -5.6    8.6      -2     44     -1     .74
       MIT  |   1 |    4.2   -3.5    1.0       5    -15    -52     .67
       NGS  |   1 |    3.4   -1.4   13.0     -36    -51    -14     .52
       SIO  |   1 |     .9    -.1  -13.6      -2    -19    -31     .54

       COD  |   2 |   -1.3    -.9   -3.0     -39      9    -17     .81
       EMR  |   2 |    1.2    4.2   10.3      50     -1     49     .50
       ESA  |   2 |    1.2   -1.5    -.3       6    -24     36     .67
       GFZ  |   2 |     .2    -.7   -1.3     -22    -66    -35     .69
       GRG  |   2 |    6.5    -.7    4.4      -3     23     -4    1.05
       JPL  |   2 |   -4.7   -6.0    9.2     -31     31     11     .87
       MIT  |   2 |    7.3    -.9    4.6       5      3    -48     .79
       NGS  |   2 |    4.1    -.8   22.9     -84    -79    -13     .70
       SIO  |   2 |    3.6    1.7  -11.5     -22    -20    -51     .67

       COD  |   3 |   -1.9    -.8   -2.0     -22     -2     -7     .77
       EMR  |   3 |    5.2    3.9   16.1      65    -12     69     .63
       ESA  |   3 |     .7   -1.6     .2     -17    -19     38     .64
       GFZ  |   3 |    -.2   -1.3   -1.2     -17    -52    -13     .77
       GRG  |   3 |     .6   -2.5    1.9      -8     -6    -38    1.12
       JPL  |   3 |    -.2   -1.8    9.1      -6     29     15     .99
       MIT  |   3 |    7.4   -3.7    7.2       4    -17    -65     .85
       NGS  |   3 |    4.7    -.2   15.3     -38    -69      8     .84
       SIO  |   3 |    3.0   -3.8   -9.8     -13    -23    -70     .77

       COD  |   4 |   -1.8   -1.1   -2.8     -45     -5    -13     .76
       EMR  |   4 |    3.6    1.8   15.7      56    -11     42     .63
       ESA  |   4 |     .9   -2.1    -.4     -32    -16     17     .74
       GFZ  |   4 |    -.2   -1.5   -1.9     -29    -66    -13     .82
       GRG  |   4 |    4.6   -3.9     .2     -11     -6    -47    1.08
       JPL  |   4 |    2.8   -3.7   10.7      -4      8    -13    1.06
       MIT  |   4 |    6.7   -5.8    7.0       3     -9    -44     .78
       NGS  |   4 |    1.1   -4.4    8.4     -28    -26    -28     .86
       SIO  |   4 |   -2.1   -1.1  -18.4     -18    -23    -39     .59

       COD  |   5 |   -1.3   -1.0   -2.0     -27    -15    -22     .82
       EMR  |   5 |    6.1    -.5   16.5      25     -9     13     .63
       ESA  |   5 |    1.1   -1.8     .0     -14    -25     56     .82
       GFZ  |   5 |     .3    -.4   -1.9       5    -69    -47     .90
       GRG  |   5 |    2.9   -1.7   10.6       2    -17    -42    1.24
       JPL  |   5 |    4.9   -2.3   14.7     -41     50      4    1.33
       MIT  |   5 |    8.1   -2.8    5.9       7      4    -58     .89
       NGS  |   5 |    5.4   -1.9   20.8     -62    -71     -9     .84
       SIO  |   5 |     .4    -.7   -8.2     -19     -3    -51     .85

       COD  |   6 |   -1.6   -1.3   -2.1     -40     -4    -35     .71
       EMR  |   6 |    1.7    -.3   10.5      47     -4     24     .54
       ESA  |   6 |    1.6    -.8     .7      15    -58     69     .64
       GFZ  |   6 |     .5    -.8   -1.3      -4    -79    -31     .76
       GRG  |   6 |   10.1    -.4   13.3      -6     -3    -39    1.12
       JPL  |   6 |    8.7   -2.4   15.1     -29     51     25    1.00
       MIT  |   6 |   10.7   -3.9    5.6       0    -17    -44     .67
       NGS  |   6 |    8.3   -2.4   17.8     -74    -82     17     .56
       SIO  |   6 |    5.5   -1.7  -11.4      -9    -39    -25     .56


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

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


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

Most combination statistics are with respect to the combined orbits and
consist of seven parts. The first, Table 1, summarizes all statistics for
the week. It contains means and standard deviations over the week of
satellite ephemeris and clock correction transformation parameters for
each centre (Table 1.1835.a). It also displays the computed satellite
position sigmas for the combined orbits (Table 1.1835.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 2.1835.[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 3.1835.[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 5.1835.0-6). 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 1835 summary.                       (Mar 08, 2015 - Mar 14, 2015)

Table 1.1835.a   GPS week: 1835   MJD: 57089.000-57095.000

         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  249|    0     0    -3     0    24    -7   .03   13   13 |    -951     -18     16    115
        |    0     1     2    13    22    16   .03           |     331     510
emr   80|    0     0     2    19   -17    49   .13   12   12 |    2597     739     14    167
        |    0     1     1    14    11    17   .02           |    1859     720
esa  150|    0     0    -1    -9    -5     8  -.35   11   11 |    -590     168      9    148
        |    0     0     1    15    13    13   .02           |    1102     452
gfz  205|    0     0    -1    11   -10    -3   .08   11   11 |      25       3      9     78
        |    0     0     1     8    10     7   .03           |     455     795
grg  175|    3    -2     5   -26     6   -12   .28   18   17 |     -12      81     15    141
        |    0     2     3    18    26    16   .13           |     244     742
igr  n/a|    0     0    -3   -12    -6     2  -.02    5    5 |   -5184     690     15     77
        |    0     0     0    14    11    14   .01           |    1866     792
jpl   80|    0     1     4    -9    11    26   .22   11   11 |    2660     732     17    111
        |    0     1     1    16    22    14   .02           |    1882     730
mit  350|    1    -2     0     1    -3   -12  -.09   13   13 |    -351    -262     45    189
        |    1     0     0    13    31    17   .02           |     359     696
ngs  234|    0     0     2    -1    -3   -31  -.11   10    9 |    -938      31   1528   3048
        |    0     0     2    15    33    19   .04           |     354     527
sio  322|   -1     0    -5    -9    -4   -17  -.22   14   14 |     ---     ---    ---    ---
        |    0     0     1    23    34    27   .02           |     ---     ---


Table 1.1835.b   GPS week : 1835   MJD: 57089.000-57095.000   

         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    5    5    5    5    5    5 |
   3  |    6    5    5    5    6    5    5 |
   4  |    4    4    4    4    5    5    5 |
   5  |    4    4    4    5    5    4    4 |
   6  |    4    4    4    4    4    4    4 |
   7  |    4    4    4    4    4    4    4 |
   8  |    5    5    5    4    7    5    5 |
   9  |    4    4    3    4    4    4    4 |
  10  |    4    7    4    4    4    4    5 |
  11  |    4    4    4    4    5    4    4 |
  12  |    5    5    5    6    6    5    5 |
  13  |    4    5    4    5    4    5    5 |
  14  |    5    5    5    5    5    5    5 |
  15  |    5    5    5    5    5    5    5 |
  16  |    5    5    5    5    5    5    5 |
  17  |    5    5    4    4    5    4    5 |
  18  |    5    5    5    5    5    5    5 |
  19  |    6    6    6    6    6    6    5 |
  20  |    4    5    4    4    4    4    4 |
  21  |    5    5    4    5    5    5    5 |
  22  |    4    4    4    4    4    4    4 |
  23  |    4    4    4    4    5    5    5 |
  24  |    4    4    4    4    4    4    4 |
  25  |    4    4    4    4    5    4    5 |
  26  |  ---  ---  ---    0   13    9   19 |
  27  |    4    4    4    4    3    3    4 |
  28  |    4    4    4    5    4    4    4 |
  29  |    6    6    5    6    0    6    6 |
  30  |    3    4    3    4    4    4    4 |
  31  |    4    5    5    5    5    5    4 |
  32  |    4    4    3    4    4    4    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 2.1835.0   GPS week: 1835   Day: 0   MJD: 57089.000                            

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     1     0   -12    -4    23   .06   13   13 |    -726    -342     19    115
emr   80|    0     0     4    13   -32    26   .15   12   12 |     534    -151     12    146
esa  150|    0     0    -2    -5     0    26  -.33   12   12 |    -989    -101      9    130
gfz  205|    0     0    -2    14    -7     0   .10   10   10 |     494   -1409      9     78
grg  180|    3     0     6    -9    28   -18   .07   20   18 |      40   -1003     14    149
igr  n/a|    0     0    -2   -23   -22   -27  -.03    5    5 |   -7145    -613     15     76
jpl   80|    0     2     6    16     8    15   .21   11   11 |     571    -147     17    120
mit  350|    0    -3     0     7    -2   -32  -.08   12   11 |      33    -830     44    204
ngs  238|    0     0    -2   -17    18   -25  -.04    9    8 |    -578    -585   1390   3030
sio  327|    0     0    -3   -17   -24   -13  -.26   14   13 |     ---     ---    ---    ---

Table 2.1835.1   GPS week: 1835   Day: 1   MJD: 57090.000                            

CENT STA|   DX    DY    DZ    RX    RY    RZ   SCL  RMS  WRMS|    TOFT   TDRFT   SDEV    RMS
        |  [mm]  [mm]  [mm] [uas] [uas] [uas] [ppb] [mm] [mm]|    [ps]  [ps/d]   [ps]   [ps]
--------+----------------------------------------------------+------------------------------
cod  246|    0     2    -1    -1    12   -15   .02   13   13 |   -1107     180     17    108
emr   80|    0    -1     1    29    -2    53   .13   13   13 |     842    1186     12    171
esa  150|    0     1    -2    -3     6     0  -.35   12   11 |     134     810      9    145
gfz  204|    0     0     0    11    -7    -7   .13   11   12 |    -437     791     10     73
grg  177|    3     0     0     0    44     8   .20   17   16 |    -185     715     14    125
igr  n/a|    0     0    -3   -15    -2    11  -.02    5    5 |   -7198    1096     15     84
jpl   80|    0    -1     5   -28    12    48   .24   13   13 |     842    1180     18    100
mit  350|    0    -2    -1     7    26   -35  -.08   12   12 |    -813     363     46    195
ngs  231|    0     2     2   -27   -67   -51  -.07   10    9 |   -1045      53   1331   2880
sio  321|   -1     0    -4     9    16    27  -.23   14   14 |     ---     ---    ---    ---

Table 2.1835.2   GPS week: 1835   Day: 2   MJD: 57091.000                            

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    -4    21    28   -14   .01   11   11 |    -992     -97     15    115
emr   80|   -1     0     2    20   -14    78   .11   11   11 |    1216     679     12    176
esa  150|    0     0    -4    10    -9     4  -.32   11   11 |     146    -317      9    153
gfz  205|    0    -1    -1     9   -16     9   .09   11   10 |     -46     262      9     73
grg  172|    4    -1     4   -38    26     0   .22   16   15 |    -314     868     15    137
igr  n/a|    0     0    -3   -15   -16     3  -.03    5    5 |   -6478     687     13     71
jpl   80|    0     1     3   -31     1     7   .21   11   11 |    1298     665     18    103
mit  350|    0    -3    -1    -6   -14    -3  -.08   12   13 |    -583    -636     43    207
ngs  233|    0     0     6     1    17   -60  -.14   10    9 |   -1137     380   1523   2719
sio  319|   -1     0    -6   -20   -31   -16  -.19   14   13 |     ---     ---    ---    ---

Table 2.1835.3   GPS week: 1835   Day: 3   MJD: 57092.000                            

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    -2    10    33    -9  -.00   13   13 |   -1099     524     17    115
emr   80|    0     0     1    25   -21    60   .14   12   12 |    2021    1999     16    171
esa  150|    0     1    -3   -11   -15     7  -.35   11   11 |     357    -290      9    135
gfz  206|    0     0    -1    13     0     2   .07   12   11 |     410    -245     10     79
grg  168|    3    -1     4   -35   -12   -39   .25   17   17 |     400    -833     16    132
igr  n/a|    0     1    -2     9    -6     7  -.03    6    6 |   -5663    1967     16     87
jpl   80|    1     1     3     0    30    31   .20   11   11 |    2091    2025     19    105
mit  350|    1    -2     0   -15     8   -19  -.08   13   12 |     -26    -613     44    185
ngs  235|   -1     0     1     3   -13    -5  -.12   11   10 |    -906     250   1362   3358
sio  324|   -1     0    -3   -35    -1   -63  -.21   14   15 |     ---     ---    ---    ---

Table 2.1835.4   GPS week: 1835   Day: 4   MJD: 57093.000                            

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  253|    1     0    -4    -7    60     4   .05   13   13 |   -1505     658     17    117
emr   80|   -1     0     2    35    -6    48   .13   12   12 |    4389     401     16    167
esa  150|   -1     0     0   -35    15   -15  -.37   12   11 |    -926     714     10    181
gfz  208|    0     0    -2     6     1    -7   .05   11   11 |     564    -577     10     89
grg  178|    3    -2     6   -52   -27   -19   .36   17   17 |    -210     464     17    146
igr  n/a|    0     1    -3     4    -4     9   .01    5    5 |   -3361     307     16     76
jpl   80|    0     2     3    -4    39    17   .26   11   11 |    4484     389     18    114
mit  350|    2    -3     0    13   -44   -10  -.07   14   14 |    -729     990     44    174
ngs  235|    0     0     0     3   -24   -20  -.10   10    9 |   -1537     739   2061   3213
sio  329|   -2     0    -5    -1   -47   -25  -.22   15   14 |     ---     ---    ---    ---

Table 2.1835.5   GPS week: 1835   Day: 5   MJD: 57094.000                            

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    -7     7     3   -19   .07   13   13 |    -733    -258     16    116
emr   80|    0    -1     2    21   -30    43   .11   12   12 |    4512     936     18    186
esa  150|    0     0     0   -21   -18    14  -.35   11   11 |   -2779     195      9    136
gfz  204|    0     0    -1    24   -28   -14   .06   11   11 |    -429     624     10     86
grg  175|    2    -2     7   -23   -15   -17   .36   17   16 |      40     417     16    158
igr  n/a|    0     1    -3   -19    -6    14  -.03    5    5 |   -3436     952     15     75
jpl   80|    0     1     3   -13   -30    22   .23   10   10 |    4566     919     18    120
mit  350|    2    -2     0   -15    40     1  -.11   14   13 |     -16    -245     46    199
ngs  234|    0     0     2    18    25   -20  -.15   10    9 |    -887     134   1699   3284
sio  318|    0     0    -7   -32    54    -4  -.21   13   12 |     ---     ---    ---    ---

Table 2.1835.6   GPS week: 1835   Day: 6   MJD: 57095.000                            

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|    1     1    -4   -17    36   -25   .03   13   13 |    -495    -795     17    119
emr   80|   -2     0     0   -10   -13    33   .12   12   12 |    4671     124     13    155
esa  150|    0     0    -2     1   -18    18  -.39   11   11 |     -75     171     10    157
gfz  204|    0    -1    -3    -3   -14    -3   .07   11   11 |    -378     575      9     69
grg  179|    3    -6    11   -27     4     0   .47   22   19 |     142     -60     19    140
igr  n/a|    0     0    -3   -27    12    -1  -.02    6    5 |   -3012     437     15     70
jpl   80|    0     1     3    -5    20    42   .22   10   10 |    4770      99     17    118
mit  350|    3    -1     0    18   -37     8  -.12   15   15 |    -328    -869     48    164
ngs  234|    1     1     5    10    16   -39  -.13   10    9 |    -479    -749   1336   2857
sio  319|    0     0    -6    28     5   -23  -.23   14   14 |     ---     ---    ---    ---

       
       
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 3.1835.0   GPS week: 1835   Day: 0   MJD: 57089.000                            

        Weighted Average                                            Orbit Dynamics (7 days)
 PRN  |  cod  emr  esa  gfz  grg  igr  jpl  mit  ngs  sio  IGS |   cod  emr  esa  gfz  grg  igr  jpl  mit  ngs  sio   IGS
------+--------------------------------------------------------+---------------------------------------------------------
   1  |   11   12   14    6   14    7   10    7    6    8    3 |    35   34   41   35   35   35   36   34   33   34    34
   2  |   11   14    7   12   21    4   11   14    7   16    4 |    27   24   21   21   25   21   28   21   20   19    20
  X3  |   23   18   10   13  ---    5   16   12   11   15    5 |    61   66   65   68  ---   64   75   70   60   68    66
   4  |   14   10   11    8   19    4    9    8    9   15    4 |    34   36   36   32   30   34   38   34   32   42    34
   5  |    8   14    8   10   25    4   14   11    8   12    4 |    36   32   27   36   44   32   33   36   31   31    32
   6  |   13    9   12    8   12    5    9   15    8   11    3 |    43   40   46   39   41   41   41   40   39   43    40
   7  |   10   10   11    8   17    4    8    9    8   12    3 |    27   30   21   26   27   23   29   23   24   25    24
  X8  |   11   12   14   13   20    9    7   11   10  ---    4 |    21   31   22   23    6   20   25   17   20  ---    20
   9  |    9   11   13   10   13    5    7    5    8   14    3 |    47   46   40   47   49   43   48   45   43   46    44
  10  |   15   13    9   11   19    5    8   15    6   11    4 |   214  214  212  210  148  213  213  212  212  213   212
  11  |   13    8   17    8   26    4   10   10    9   10    4 |    28   31   20   28   40   22   33   22   25   20    25
  12  |   19   15   10   11   25    2   16   12   10   11    5 |    29   30   17   30   38   23   29   24   26   22    24
  13  |    9   14    9   13   15    4   15   10   10   13    4 |    41   40   40   43   44   38   43   36   36   35    38
  14  |   15   11   13   11   15    2   12   11   14   20    4 |    33   33   31   42   35   34   30   38   39   41    34
  15  |   16   14   12   15   16    4   16   12   11   19    5 |    36   33   27   34   31   27   34   26   25   31    28
  16  |   15   12   12   12   23    5   12   17   10   19    5 |    27   26   20   26   30   21   26   24   25   19    22
  17  |   11   11   12   12   17    6   14   12   10   17    4 |    29   36   24   35   33   26   35   33   33   26    30
  18  |   22   15    9   14   23    4   15   10   10   15    5 |    24   20   15   26   31   20   22   22   21   21    18
  19  |   19   11   13   10   22    7   10   25   11   19    5 |    27   28   22   24   31   20   28   22   23   20    22
  20  |   12   13    8    9   19    5   10   14    6   10    4 |    44   45   41   45   50   43   43   43   42   40    42
  21  |    9   15    8   14   25    5   13   11   10   18    4 |    20   24   18   16   28   18   26   18   19   19    17
  22  |   16   12    9    8   23    4   13    9    9   11    4 |    23   25   21   26   35   23   23   27   25   27    23
  23  |   11    9   12   12   14    4   10    8    9   14    3 |    33   34   31   38   36   32   36   32   33   33    32
  24  |   11   10   14    6   13    3   11   12    7   14    3 |    26   31   29   29   28   26   33   26   27   28    27
  25  |   11   13   16    7   16    4    9    9    7    9    3 |    25   31   29   28   33   24   30   24   27   23    26
  27  |   11    8   16    7   18    4    8    7    6    8    3 |    28   32   26   28   39   26   33   30   29   28    29
  28  |   10    9   10   11   25    5   10   11    8   10    4 |    23   29   17   29   37   20   26   26   23   17    23
  29  |   17   13   13   15   24    6   15   19   12   22    5 |    33   28   20   23   25   22   28   22   23   31    25
  30  |   12    9   12    6   13    4    8    8    5    8    3 |    29   33   33   32   32   29   34   29   29   30    30
  31  |   12   11   12   11   20    4   11   11    7   12    4 |    26   32   23   26   35   25   32   25   27   21    25
  32  |   15   10   10    6   21    5    8    9    7   11    3 |    41   45   42   43   47   41   45   44   41   46    43
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |   13   12   12   10   20    5   11   12    9   14      |T   37   39   34   38   38   35   39   36   35   36    35
 WRMS |   13   12   12   10   18    5   11   11    8   13      |NE  37   39   34   38   37   34   39   36   35   36    35
 MEDI |   12   12   12   11   19    4   10   11    9   12      |MD  29   32   27   30   35   26   33   27   27   28    28

Table 3.1835.1   GPS week: 1835   Day: 1   MJD: 57090.000                            

        Weighted Average                                            Orbit Dynamics (7 days)
 PRN  |  cod  emr  esa  gfz  grg  igr  jpl  mit  ngs  sio  IGS |   cod  emr  esa  gfz  grg  igr  jpl  mit  ngs  sio   IGS
------+--------------------------------------------------------+---------------------------------------------------------
   1  |   10   15   13    7   12    4   14    8   10   10    4 |    30   28   33   29   32   30   33   27   30   30    29
   2  |   13   10    8   13   19    4   15   14   10   15    4 |    23   25   20   18   24   19   28   18   22   15    19
  X3  |   18   19    9   14  ---    8   15   13   11   13    5 |    49   53   53   57  ---   51   61   56   51   53    53
   4  |   11   10   10    9   19    6   14    9    7   16    4 |    24   26   24   22   23   24   32   25   25   33    24
   5  |    8   13    9    9   18    3   15   11    9   11    4 |    30   28   20   27   37   26   32   29   28   28    26
   6  |   10   12   11    8   11    5   11   14   12   11    4 |    29   32   31   28   33   29   34   28   30   32    29
   7  |   12   13   13   10   14    3   11   10    7   15    4 |    25   30   18   24   28   20   25   21   22   20    21
  X8  |    9   17   14    8  ---    7   13   14    9  ---    5 |    22   29   24   20  ---   19   25   15   19  ---    20
   9  |    8   10   12    8   11    4   10    6    7   14    3 |    30   34   28   30   35   28   34   29   30   30    30
 X10  |   16   20   17   15  ---   12   24   20   21   18    7 |   400  392  398  390  ---  389  391  400  389  395   393
  11  |    9    9   16    9   24    6   12    9    9    9    4 |    23   29   19   25   36   20   29   21   23   18    22
  12  |   17   15    9   13   22    5   18   12   13   11    5 |    25   26   14   27   32   20   26   20   24   17    20
  13  |   10   12    9   14   13    4   18   11   13   16    4 |    30   32   27   28   31   26   32   24   26   22    25
  14  |   15   11   14   14   15    5   11   12   10   19    4 |    28   25   24   32   27   26   27   25   26   26    25
  15  |   13   14    9   13   11    3   18   12   10   17    4 |    29   31   25   31   27   25   34   25   24   26    25
  16  |   17   16   11   14   18    6   12   13    9   20    5 |    26   26   16   23   25   17   22   21   21   19    19
  17  |   11   13   11   16   15    5   14   10   13   15    4 |    25   28   23   31   26   22   30   23   26   22    24
  18  |   16   14    7   14   20    6   13   10   13   14    4 |    23   19   17   25   26   18   22   20   24   19    19
  19  |   20   13   11   13   20    8   11   24   13   16    5 |    28   27   20   20   23   18   26   18   22   15    19
  20  |    9   11   12   13   16    4   13   11   16   14    4 |    42   45   41   47   50   42   44   46   42   41    43
  21  |   10   17   10   13   22    5   15   11    9   16    4 |    19   22   16   16   28   18   23   17   19   17    16
  22  |   17   13    7   10   19    5   12   10   11   12    4 |    22   21   17   23   29   19   21   20   19   21    19
  23  |    9    9   12    9   10    4   13    8    9   15    3 |    24   27   24   24   25   22   28   22   23   18    22
  24  |   10    9   13    9   13    4   11   13    9   10    4 |    23   24   24   26   27   23   27   22   25   24    23
  25  |   10   11   15    7   12    4    9    8    8    9    3 |    22   24   27   25   27   22   24   18   21   18    21
  27  |   12    9   14    8   16    5    9    7    8    7    3 |    25   28   21   23   30   21   28   22   24   22    24
  28  |   10   16   10   11   18    4   10   11    9    9    4 |    16   23   15   23   30   17   23   19   16   17    17
  29  |   15   13   13   13   20    6   15   18   14   20    5 |    25   26   19   20   21   19   26   18   21   24    21
  30  |   14   11   12    8   11    3    7    9    9    9    3 |    25   29   27   22   28   24   30   23   22   25    24
  31  |   17   20   15   16   20    4   11   10   11   14    5 |    30   32   23   30   35   24   32   23   28   20    25
  32  |   14   11    9   10   15    7   10   11    8    9    3 |    39   43   39   41   41   39   40   38   38   41    39
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |   13   13   12   11   17    5   13   12   10   14      |T   39   40   36   38   29   36   41   36   37   36    36
 WRMS |   13   13   11   12   16    5   13   12    9   14      |NE  38   40   36   38   29   35   41   36   37   36    36
 MEDI |   12   13   11   11   16    5   13   11   10   14      |MD  25   28   24   25   28   22   28   22   24   22    24

Table 3.1835.2   GPS week: 1835   Day: 2   MJD: 57091.000                            

        Weighted Average                                            Orbit Dynamics (7 days)
 PRN  |  cod  emr  esa  gfz  grg  igr  jpl  mit  ngs  sio  IGS |   cod  emr  esa  gfz  grg  igr  jpl  mit  ngs  sio   IGS
------+--------------------------------------------------------+---------------------------------------------------------
   1  |    8   11   12    8   13    6   10    8    7   11    3 |    34   30   38   31   31   32   33   31   31   36    32
   2  |   15   14    9   14   16    4   10   14   10   13    4 |    27   23   21   19   21   18   24   17   20   15    18
  X3  |   14   17    9   14  ---    8   15   14   13   15    5 |    62   63   63   65  ---   61   68   65   55   65    61
   4  |    7    7   11    8   20    4    9   11    9   18    4 |    26   27   29   25   22   25   29   27   26   38    26
   5  |    8   13    8   10   18    3   14   15    7   12    4 |    32   33   25   32   38   28   30   33   28   27    29
   6  |   11   10   12   11   10    5    9   12    6   11    3 |    37   37   40   32   33   34   37   31   33   36    34
   7  |    8   10   11   10   17    2   12   13    7   13    4 |    26   27   19   25   31   21   27   22   25   19    22
  X8  |    7   10   11   12  ---    9    8   11   13  ---    4 |    18   27   21   22  ---   19   25   17   27  ---    20
   9  |    8    8   13    8   11    5    8    6    5   15    3 |    38   38   34   39   40   37   38   35   34   38    36
  10  |   10   11   11    9   16    5    9   12    9   11    3 |   223  229  222  226  295  226  223  229  217  228   225
  11  |    7    8   16    8   21    6    8   11   11   10    4 |    22   27   21   23   36   19   26   19   26   16    21
  12  |   15   12    9   13   24    4   15   13   12   13    5 |    27   28   18   31   36   24   29   23   34   21    24
  13  |    8   12    9   12   15    3   12   12   12   15    4 |    30   36   31   31   37   29   36   29   32   28    30
  14  |   11   11   11   15   15    6   11   14   11   19    4 |    31   29   28   39   32   29   29   31   27   35    29
  15  |   12   13   12   14   13    4   12   12   12   18    4 |    33   31   27   32   29   26   31   26   27   30    27
  16  |   20   12   10   12   17    5   12   14   12   18    5 |    30   25   19   22   27   19   26   22   23   18    20
  17  |   12   11   12   13   13    5   12   13   11   14    4 |    22   29   20   25   27   19   28   22   26   18    21
  18  |   11   13    8   16   19    5   13   10   12   16    4 |    25   21   19   30   30   20   22   22   24   23    20
  19  |   18   10   11   12   19    6   11   25   12   19    5 |    28   26   23   22   26   18   26   18   24   15    21
  20  |    7   15   10   12   17    4   11   10   11   12    4 |    42   38   38   46   45   39   38   42   42   33    39
  21  |   14   11   10   13   17    4    9   10   10   17    4 |    23   22   17   15   25   16   21   17   18   15    15
  22  |    8   13    8   10   20    5   11    9   10   10    4 |    22   21   20   26   30   20   20   23   19   22    20
  23  |    9   12   11   12   10    4   10   12   12   15    4 |    29   31   28   34   29   29   31   25   27   25    27
  24  |   10    9   13    9   16    4   10   12   12   10    4 |    24   26   26   28   30   24   27   24   28   24    24
  25  |   10   15   14    8   11    4   10   10    8   10    4 |    27   29   29   30   30   26   28   22   28   24    26
  27  |   11    7   13    8   14    3   13    8   11    8    3 |    27   29   27   26   34   25   30   26   32   23    27
  28  |   11    7   10    9   16    5   10    9   10   10    3 |    21   24   14   25   31   18   24   22   21   17    20
  29  |   13   12   12   14   18    7   12   19   12   18    5 |    26   25   19   23   19   20   22   18   23   25    22
  30  |    9   10   12    5   12    3   11    9    6    9    3 |    25   28   30   27   31   26   32   27   30   28    27
  31  |   11   20   14   15   20    4   12   14   10   12    5 |    29   35   24   32   36   26   32   24   31   22    26
  32  |   10    7    9    9   13    6    8   10    7   12    3 |    45   47   48   50   47   46   47   50   43   51    47
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |   11   11   11   11   16    5   11   12   10   14      |T   35   36   33   36   40   32   36   33   34   33    33
 WRMS |   11   11   11   10   15    5   11   13    9   13      |NE  35   36   33   36   40   32   36   33   34   33    33
 MEDI |   10   11   11   12   16    5   11   12   11   13      |MD  27   29   26   30   31   25   29   24   27   24    26

Table 3.1835.3   GPS week: 1835   Day: 3   MJD: 57092.000                            

        Weighted Average                                            Orbit Dynamics (7 days)
 PRN  |  cod  emr  esa  gfz  grg  igr  jpl  mit  ngs  sio  IGS |   cod  emr  esa  gfz  grg  igr  jpl  mit  ngs  sio   IGS
------+--------------------------------------------------------+---------------------------------------------------------
   1  |    8   10   12    8   12    6   10    7    9   12    3 |    33   33   37   32   32   33   35   34   31   36    33
   2  |   16   14   10   15   18    5   10   15   11   15    4 |    31   26   24   22   23   21   27   19   21   21    21
  X3  |   17   15    8   14  ---    6   13   12   15   12    5 |    61   67   65   65  ---   63   70   71   63   68    65
   4  |   11    8   11    9   18    5    8   12   13   17    4 |    27   29   30   25   27   26   30   30   26   37    27
   5  |   11   16    8    9   18    4   15   13    9   11    4 |    32   32   25   32   35   28   30   30   31   30    29
   6  |   12    9   12    9   12    4    8   11    9   12    3 |    45   40   43   38   38   38   41   35   41   41    39
   7  |   10   10   15    8   15    5   11   12    9   12    4 |    30   32   26   29   31   25   30   27   26   23    26
  X8  |   11    9   11    9  ---    7    9   12   12  ---    4 |    22   26   20   23  ---   21   23   19   20  ---    20
   9  |    7   10   14    7   11    4    8    7    7   16    3 |    37   40   34   39   40   38   39   38   35   41    37
  10  |   14   11   11   10   18    7   10   13    8   12    4 |   246  245  244  243  182  243  243  248  243  244   244
  11  |    8   10   15   10   19   10    9   10   11   12    4 |    25   31   22   23   38   20   30   23   24   21    24
  12  |   18   16    7   15   25    5   17   15   14   14    5 |    29   27   19   30   33   24   29   25   26   23    23
  13  |   13   12   10   14   15    5   13   11   10   16    4 |    34   36   33   34   36   32   37   29   31   30    31
  14  |   14   10   11   16   15    7   10   15   12   19    4 |    34   30   31   40   35   32   31   37   32   35    32
  15  |   12   13   10   15   15    5   14   13   11   16    4 |    32   31   26   31   28   27   34   27   30   28    27
  16  |   10   13    9   13   17    6   12   10   11   21    4 |    23   22   16   26   28   20   23   22   24   22    20
  17  |   11   11   12   11   14    7   10   14   12   15    4 |    27   29   22   27   31   22   31   29   24   27    25
  18  |   16   15    6   16   21    7   13   13    9   17    5 |    24   19   17   26   30   19   21   24   21   20    18
  19  |   16   11   10   15   18    7   11   24   15   17    5 |    26   26   21   24   26   20   26   20   21   18    20
  20  |   10   15    9   10   16    5   10   11    9   13    4 |    45   44   42   48   50   43   45   47   45   42    44
  21  |   14   13    7   16   22    6   12   10    9   16    4 |    26   23   18   17   24   19   26   19   19   19    17
  22  |   11   11    9   11   21    5   12   11   10   14    4 |    20   22   21   27   32   21   22   27   24   25    22
  23  |   11   10   12   12   10    6   10   14   13   15    4 |    32   32   31   33   29   30   34   30   26   26    28
  24  |   10   10   14   10   18    5   10   13    9    9    4 |    24   25   26   27   26   24   29   25   23   27    24
  25  |   10   13   15    9   15    6    9   11   10   12    4 |    25   24   27   27   29   25   26   24   22   24    23
 X26  |    2  ---  ---  ---  ---   43  ---  ---  ---  ---    0 |    31  ---  ---  ---  ---   24  ---  ---  ---  ---    30
  27  |   13    6   11   10   11    3    8    8   11    8    3 |    32   33   27   31   37   28   31   28   29   26    29
  28  |   15   16    7   12   20    4   11   12   10   14    4 |    31   27   20   28   34   21   27   28   25   25    24
  29  |   18   12   13   14   20    8   13   22   12   20    5 |    24   25   19   22   22   19   25   16   17   24    19
  30  |   13   14   13    6    9    3   10   10   10   10    4 |    27   35   30   29   31   27   31   27   27   30    28
  31  |   11    9   13   12   23    4   11   15   10   13    4 |    30   28   24   32   36   27   32   27   25   21    26
  32  |   10    8    9    8   17    8    8   12   12   14    3 |    82   80   80   81   82   81   78   84   75   85    80
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |   13   12   11   12   17    6   11   13   11   14      |T   38   39   36   39   38   35   39   37   36   37    36
 WRMS |   13   12   11   11   17    6   11   12   10   15      |NE  38   39   35   38   38   35   39   37   36   37    35
 MEDI |   11   11   11   11   17    5   10   12   10   14      |MD  30   30   26   29   32   25   30   27   26   26    26

Table 3.1835.4   GPS week: 1835   Day: 4   MJD: 57093.000                            

        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  |   14   12   11    9   11    5   10   11    9   14    4 |    30   28   31   24   31   28   30   28   25   34    27
   2  |   13   13   10   13   15    5    9   17   10   15    4 |    28   26   21   24   22   21   26   16   20   18    19
  X3  |   22   17    9   13  ---    5   13   19   14   16    5 |    52   54   55   55  ---   54   58   60   48   61    54
   4  |   11   11   13   10   23    6   10   14   10   16    4 |    25   28   24   21   27   23   27   26   25   33    24
   5  |   11   16    7    9   17    5   15   17   10   13    4 |    30   30   20   33   38   28   30   31   29   29    27
   6  |   12   10   12    8   11    5   10   10    6   13    3 |    37   33   37   32   31   35   33   29   33   36    32
   7  |   11   12   14    8   15    6    8   13    9   14    4 |    29   29   20   27   31   23   27   25   24   22    23
  X8  |   17   12   11   31  ---    6   13   16   15  ---    7 |    22   28   23   45  ---   23   27   17   23  ---    22
   9  |   11   11   17    5   13    5    9    7    8   13    3 |    32   34   26   32   35   31   36   32   31   35    31
  10  |   15   10   12    9   20    6   11   12   10   11    4 |   166  160  161  163  149  161  160  168  155  160   161
  11  |   15    9   15   10   18    5   10   12   11   10    4 |    25   31   22   26   40   23   31   23   21   22    24
  12  |   18   15    8   15   25    6   17   17   13   15    5 |    29   25   17   28   32   21   28   22   21   16    20
  13  |   10   12   10   11   14    5   12   12   11   17    4 |    30   36   28   31   35   30   36   26   31   26    29
  14  |   11   14   10   17   16    4   11   16   10   17    4 |    30   24   26   37   28   27   27   29   26   29    26
  15  |   11   14   11   14   16    4   12   14   11   17    4 |    32   32   26   33   31   28   33   27   24   26    27
  16  |   15   11    8   11   14    4   10   13   12   22    4 |    27   23   18   24   27   19   24   18   23   21    20
  17  |   14   12   11   12   12    7   12   17    8   19    4 |    27   29   22   26   26   20   29   26   20   30    23
  18  |   16   17    6   17   24    4   13   14   11   16    5 |    23   19   15   27   29   17   21   18   15   15    15
  19  |   18   12   11   14   19    8   10   27   12   18    5 |    29   26   23   23   27   20   26   19   18   14    19
  20  |   11   18   10   10   17    5   11   11    9   12    4 |    45   38   36   45   47   39   38   43   43   40    40
  21  |   12   13    8   14   18    4   13   15    9   16    4 |    21   20   15   19   24   16   24   15   14   13    13
  22  |    9   12    9   10   22    3   11   13    7   13    4 |    18   18   15   25   30   17   21   20   19   18    17
  23  |   11    9   13   11   11    6    8   18   14   15    4 |    30   29   26   32   27   28   32   28   28   26    26
  24  |    9   10   14    9   22    5    8   16    7   11    4 |    21   23   24   23   28   22   25   21   20   23    21
  25  |    8   14   15   10   16    6   10   15   12   13    4 |    25   25   27   25   25   22   27   20   21   19    21
 X26  |   41   16   16  ---  ---   11  ---   23   28  ---   13 |    42   22   20  ---  ---   18  ---   14   24  ---    16
  27  |   10    8   10    8   11    4    7    9    8    8    3 |    26   31   26   27   37   24   30   25   22   23    26
  28  |   13    9    9    6   16    6    8   13    9   11    3 |    23   23   18   21   29   18   23   23   22   20    19
 X29  |    4  ---  ---  ---  ---   33  ---  ---  ---  ---    0 |    22  ---  ---  ---  ---   18  ---  ---  ---  ---    23
  30  |   14   13   14    7   12    5    9   13   12   10    4 |    27   29   26   22   27   23   27   24   25   25    23
  31  |   13   10   14   11   20    4    9   15   10   17    4 |    31   31   22   26   35   23   31   23   24   22    24
  32  |   13   11   11    8   18    7    9   11   11   12    4 |    71   73   71   68   65   68   73   67   69   68    69
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |   13   12   12   11   17    5   11   14   10   15      |T   34   34   30   34   36   30   35   31   30   31    30
 WRMS |   13   12   11   11   17    5   11   14    9   14      |NE  34   33   30   34   35   29   35   30   30   31    29
 MEDI |   12   12   11   10   16    5   10   14   10   14      |MD  29   29   24   27   30   23   28   25   24   25    23

Table 3.1835.5   GPS week: 1835   Day: 5   MJD: 57094.000                            

        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  |   12   10   10   10   13    3    9    9    6   10    3 |    31   30   31   26   30   28   32   29   29   29    29
   2  |   14   14   11   14   16    5   10   15   11   14    4 |    26   26   21   21   23   21   28   17   20   17    19
  X3  |   16   16   10   12  ---    6   14   14   12   14    5 |    57   60   59   57  ---   58   67   63   55   62    59
   4  |   12    8   11    8   26    5    7   13   12   16    4 |    27   26   25   22   31   24   28   27   25   34    25
   5  |    7   13    9    9   16    4   13   17    9   11    4 |    27   29   19   29   35   24   30   29   26   24    25
   6  |   13   13   12    8   12    4    7   11    7   11    3 |    36   35   32   28   29   30   33   26   27   30    29
   7  |    8   12   11    9   15    5    9    9    8   14    3 |    27   28   19   26   30   22   27   22   23   20    22
  X8  |   15   12   11   10  ---    8    7   12   15  ---    5 |    21   25   18   19  ---   19   22   16   20  ---    17
   9  |    7    9   13    7   11    5    7    8    7   15    3 |    33   34   27   30   35   28   35   31   31   38    31
  10  |   14   11   10   10   24    7    7   13    8   10    4 |   177  174  173  174  139  171  175  178  172  173   174
  11  |   11    8   15    9   20    4    9   12    9   11    4 |    22   31   22   26   40   21   32   23   25   16    24
  12  |   21   15    8   14   24    5   14   15   12   14    5 |    31   26   15   25   31   20   28   19   22   15    20
  13  |   10   14   11   15   15    5   11   12   10   15    4 |    25   31   25   25   32   24   32   23   19   24    23
  14  |   13   11   11   14   15    5   10   14   10   19    4 |    28   23   22   32   23   26   27   25   21   28    23
  15  |    9   14   10   15   14    4   12   16   12   17    4 |    29   28   24   30   27   24   30   26   22   23    23
  16  |   19    9    8   12   16    5   10   11   10   16    4 |    28   20   15   22   27   18   23   19   22   16    18
  17  |   10   12   11   12   14    4   12   15   11   13    4 |    23   28   21   21   26   20   30   22   21   20    21
  18  |   16   14    6   13   20    6   12   12   11   14    4 |    24   19   15   21   27   18   22   19   18   17    17
  19  |   20   11    9   16   18    6    9   26   12   18    5 |    29   26   21   23   25   20   27   18   18   17    20
  20  |   10   20    9   10   15    5    9   12    9   11    4 |    71   70   69   70   73   71   71   72   69   69    70
  21  |   15   14    9   11   17    5   10   13   14   14    4 |    21   19   13   16   27   15   24   17   17   15    14
  22  |   13   11    9    9   22    4    9   12    9   10    4 |    18   19   15   19   29   17   21   20   17   21    17
  23  |   10   12   12   11   11    6    9   19   12   15    4 |    27   26   22   24   22   23   30   27   25   25    23
  24  |   10    9   14    9   17    4    8   11   10    9    3 |    23   25   24   24   27   22   27   21   21   24    22
  25  |    7   11   14    8   18    4    9    9    6    9    3 |    20   24   26   23   25   21   26   17   19   17    20
 X26  |   21   14   19  ---  ---   19  ---   18   17  ---    9 |    23   13   22  ---  ---   22  ---   14   26  ---    15
  27  |   11    8   13   11   13    4    6    9    7    8    3 |    25   30   24   27   35   23   27   23   26   21    24
  28  |   16   13    9   11   18    4    8   11    9   12    4 |    25   23   14   23   30   18   24   21   21   17    19
  29  |   18   12   11   15   18    8   13   21   12   18    5 |    23   20   15   10   12   15   20    8   10    7    11
  30  |   11   13   12    8   15    4    9    8    8    8    3 |    24   30   27   25   27   25   28   23   25   24    24
  31  |   11   12   13   14   19    4   11   14   12   13    4 |    27   29   20   27   34   22   29   21   22   18    22
  32  |   11    8    9    7   20    4    8   12    8   14    3 |    61   61   62   62   65   62   63   66   62   66    62
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |   13   12   11   11   17    5   10   14   10   13      |T   34   34   29   32   35   30   36   30   30   30    30
 WRMS |   13   12   11   11   16    5   10   13    9   12      |NE  32   32   28   31   33   29   34   29   29   29    28
 MEDI |   12   12   11   11   16    5    9   12   10   14      |MD  27   26   22   25   29   22   28   22   22   21    22

Table 3.1835.6   GPS week: 1835   Day: 6   MJD: 57095.000                            

        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  |   12   11   12    9   17    4    9   11    8   10    3 |    35   29   34   28   36   32   33   31   32   34    30
   2  |   11   12    9   14   18    6   12   17   10   17    4 |    27   25   20   24   26   21   26   17   20   16    19
  X3  |   18   15   11   12  ---    5   11   14   10   13    5 |    66   68   70   68  ---   67   74   74   65   76    69
   4  |   12    9   13    8   40    4    8   15    8   15    4 |    27   27   26   25   46   25   27   27   25   33    25
   5  |   11   13   10    9   19    5   12   16   12   12    4 |    31   34   24   35   38   29   34   33   34   31    30
   6  |    8   14   11    9   15    4    8   12    7   10    3 |    40   42   41   34   35   39   40   33   35   40    37
   7  |   11    9   12   10   16    6    9   11    8   12    3 |    29   31   21   30   33   24   29   25   24   24    25
  X8  |   14   11   14    9  ---    9    6   11   10  ---    4 |    21   27   20   19  ---   20   22   16   20  ---    18
   9  |    9    8   12    8   17    5    8    9   10   13    3 |    43   42   37   43   45   40   42   43   40   47    41
  10  |   13   12   11    9   40    6    8   14    8   11    4 |   170  175  169  171  155  170  170  177  166  172   172
  11  |   11   11   17    8   19    9    8   14   10   10    4 |    33   39   27   33   51   28   37   31   33   26    32
  12  |   16   17    9   13   23    6   13   17   14   13    5 |    27   28   18   28   38   22   29   25   26   24    23
  13  |   11   13   10   11   16    5   13   13   12   18    4 |    40   41   38   40   42   36   42   34   39   34    37
  14  |    9    9   13   14   21    4    9   14   11   17    4 |    35   32   31   43   40   36   33   34   36   37    33
  15  |   10   13   12   15   16    3   13   19   11   19    5 |    38   35   31   38   36   33   37   33   30   32    32
  16  |   16   11    7   14   17    4   10   12   10   17    4 |    27   24   18   27   31   21   24   17   24   16    20
  17  |   10   14   11   13   14    7   12   17   10   15    4 |    29   30   24   30   35   24   32   30   26   26    26
  18  |   17   15    8   17   25    5   12   13   11   16    5 |    26   22   15   27   35   19   21   20   20   17    18
  19  |   13   10   11   12   23    7   11   28   11   17    5 |    24   29   24   25   36   22   28   21   21   19    22
  20E |   12   12    9   11   21   10   11   16   10   12    4 |   104   96   98  106  102   99   96  100  104  104   100
  21  |   23   12    9   15   23    5   12   15   11   18    5 |    31   21   17   20   31   18   22   18   19   16    16
  22  |   12   10    9   13   25    4    9   12   10   10    4 |    19   18   16   23   36   19   20   21   21   21    18
  23  |   12   10   10   12   15    4   10   21   11   16    4 |    35   35   33   39   36   34   37   37   28   35    33
  24  |   10    9   15    8   22    4   10   13   11   12    4 |    22   27   26   23   32   23   26   23   22   25    22
  25  |   11   15   16    8   22    4   10   11   13   13    4 |    23   30   28   25   36   24   29   22   21   23    24
 X26  |   31   34   23  ---  ---   12  ---   21   59  ---   19 |    34   25   25  ---  ---   20  ---    9   34  ---    20
 X27  |    9    6   14    8   18    6    7    9  ---    9    3 |    31   38   33   35   48   31   34   29  ---   28    33
  28  |   10   13    8   10   18    5   10   11   11   13    4 |    20   26   16   24   34   19   26   23   24   18    21
  29  |   18   11   12   13   21    7   11   23   13   20    5 |    24   20   17   11   18   15   19   10    8   10    14
  30  |   14    9   12    7   13    5    9   10    5   12    3 |    23   30   26   23   30   23   29   25   22   25    24
  31  |    7   10   14   10   26    3   10   12   11   12    4 |    24   31   22   28   40   25   30   23   26   20    24
  32  |   11   10   11    8   35    5    8   13    8   14    4 |    48   50   47   49   66   48   47   50   45   50    48
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |   13   12   11   11   22    6   10   15   10   14      |T   37   38   34   37   43   34   38   34   35   35    34
 WRMS |   13   12   11   11   19    5   10   15    9   14      |NE  35   36   32   35   41   32   36   32   32   33    32
 MEDI |   11   11   11   10   19    5   10   13   10   13      |MD  29   30   26   28   36   24   30   25   26   26    25



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 4.1835   GPS week: 1835   MJD: 57089.0-57095.0

CENT| CLK EPO  |        BRUX       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3006 |U    7     5    15 |U   10    11    34 |U    7     9    20 |
emr | emr 3002 |     6     5    14 |U   10    11    33 |     7     8    18 |
esa | esa 3003 |     6     5    13 |U    9    11    34 |     7     7    17 |
gfz | gfz 2962 |U    5     4    11 |U   10    11    33 |U    6     8    15 |
grg | grg 2770 |     7     6    14 |U   11    12    43 |U    8     8    23 |
igr | igr 2990 |     6     5    13 |     9    10    32 |     7     8    17 |
igs | igs 3001 |     5     4    12 |     9    11    32 |     6     8    15 |
jpl | jpl 2962 |     6     6    13 |U   10    10    31 |U    9     8    20 |
mit | mit 3003 |     6     7    15 |U    9    12    33 |U    7     9    17 |



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 5.1835.0   GPS week: 1835   Day: 0   MJD: 57089.0

CENT| CLK EPO  |        BRUX       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 2976 |     6     5    12 |     6    11    22 |     7     8    19 |
emr | emr 2976 |     5     4    12 |     8    10    20 |     6     6    16 |
esa | esa 2976 |     5     6    12 |     7     9    21 |     7     6    15 |
gfz | gfz 2976 |     5     5    10 |     7     9    21 |     5     6    12 |
grg | grg 2880 |     6     5    12 |    10    11    48 |     8     6    22 |
igr | igr 2976 |     5     5    11 |     7     8    19 |     5     6    12 |
igs | igs 2976 |     5     5    10 |     7     9    18 |     5     6    13 |
jpl | jpl 2975 |     5     6    14 |     7     9    19 |     8     6    17 |
mit | mit 2976 |     5     5    12 |     7     8    21 |     5     7    16 |

Table 5.1835.1   GPS week: 1835   Day: 1   MJD: 57090.0

CENT| CLK EPO  |        BRUX       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 2976 |     9     8    19 |     7     6    29 |    10    14    30 |
emr | emr 2976 |     9     7    19 |     5     6    25 |     8     9    20 |
esa | esa 2976 |     7     7    17 |     6     5    27 |     8     8    17 |
gfz | gfz 2976 |     8     8    18 |     6     5    21 |     7     8    15 |
grg | grg 2688 |    11     8    25 |     7     6    29 |     9    11    29 |
igr | igr 2976 |     8     7    16 |     5     5    22 |    10    12    27 |
igs | igs 2976 |     8     7    17 |     6     5    22 |     7     8    16 |
jpl | jpl 2976 |     7     9    15 |     7     7    21 |     9     8    18 |
mit | mit 2976 |    10    14    28 |     7     9    25 |     9    11    27 |

Table 5.1835.2   GPS week: 1835   Day: 2   MJD: 57091.0

CENT| CLK EPO  |        BRUX       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 2976 |     8     4    19 |    11     9    36 |     6     8    22 |
emr | emr 2976 |     7     4    16 |    11     8    33 |     7     9    19 |
esa | esa 2976 |     7     4    16 |    11     9    35 |     7     7    18 |
gfz | gfz 2976 |     6     2    14 |    11    10    35 |     6     7    16 |
grg | grg 2782 |     6     4    15 |    12    10    44 |     7     7    20 |
igr | igr 2976 |     6     2    15 |    11     9    34 |     6     7    17 |
igs | igs 2976 |     6     3    15 |    11     8    33 |     6     8    17 |
jpl | jpl 2976 |     7     5    16 |    11     8    33 |     9     8    21 |
mit | mit 2976 |     5     4    15 |    11    11    32 |     6     9    17 |

Table 5.1835.3   GPS week: 1835   Day: 3   MJD: 57092.0

CENT| CLK EPO  |        BRUX       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3045 |     5     4    14 |    12    17    37 |     6     8    18 |
emr | emr 2976 |     4     5    12 |    12    18    42 |     6     8    16 |
esa | esa 2976 |     4     4    12 |    11    17    36 |     6     7    16 |
gfz | gfz 2976 |     4     4    11 |    12    17    41 |     6     8    14 |
grg | grg 2784 |     5     5    14 |    11    17    51 |     7     7    22 |
igr | igr 2976 |     4     4    12 |    11    17    37 |     6     7    14 |
igs | igs 2976 |     3     4    11 |    12    17    39 |     6     8    15 |
jpl | jpl 2976 |     4     6    12 |    11    15    36 |     9     8    19 |
mit | mit 2976 |     5     5    16 |    11    18    40 |     6     8    12 |

Table 5.1835.4   GPS week: 1835   Day: 4   MJD: 57093.0

CENT| CLK EPO  |        BRUX       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 2960 |     7     6    15 |    12    12    36 |     8     8    17 |
emr | emr 2975 |     6     4    11 |    14    13    36 |     9     8    16 |
esa | esa 2976 |     6     5    11 |    12    12    36 |     8     7    15 |
gfz | gfz 2880 |     5     3     7 |    12    12    35 |     7     8    13 |
grg | grg 2688 |     7     7    12 |    14    14    42 |     9     8    22 |
igr | igr 2956 |     6     4    11 |    11    11    34 |     7     7    16 |
igs | igs 2976 |     5     4    10 |    12    12    34 |     8     8    13 |
jpl | jpl 2879 |     7     7    12 |    12    11    32 |    11     7    20 |
mit | mit 2976 |     5     6    11 |    12    14    34 |     7     8    14 |

Table 5.1835.5   GPS week: 1835   Day: 5   MJD: 57094.0

CENT| CLK EPO  |        BRUX       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3064 |     7     4    12 |    10    14    38 |     6     7    23 |
emr | emr 3069 |     8     7    17 |    11    14    44 |     7     8    25 |
esa | esa 3072 |     7     5    13 |     9    13    43 |     7     7    23 |
gfz | gfz 2976 |     6     4    10 |    12    16    44 |     6     9    23 |
grg | grg 2784 |     5     4    12 |    11    13    45 |     7     9    25 |
igr | igr 3058 |     7     5    14 |     9    13    43 |     6     7    21 |
igs | igs 3055 |     6     4    12 |     9    14    42 |     6     8    21 |
jpl | jpl 2976 |     8     7    14 |    10    13    41 |    10     7    29 |
mit | mit 3072 |     6     8    12 |     8    12    45 |     7    10    20 |

Table 5.1835.6   GPS week: 1835   Day: 6   MJD: 57095.0

CENT| CLK EPO  |        BRUX       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3050 |     6     5    14 |    11    10    41 |     7     8    14 |
emr | emr 3072 |     5     5    14 |     7     8    34 |     8     9    15 |
esa | esa 3072 |     5     5    11 |     9     9    38 |     7     8    14 |
gfz | gfz 2976 |     5     5     9 |     9     9    36 |     7    10    16 |
grg | grg 2784 |     6     6    11 |    10    12    41 |     8     9    22 |
igr | igr 3018 |     5     5    11 |     9     8    37 |     7     9    15 |
igs | igs 3072 |     4     4    10 |     9     8    35 |     7     9    13 |
jpl | jpl 2976 |     5     5    11 |    10     9    38 |    10     7    18 |
mit | mit 3072 |     5     5    15 |     9    10    34 |     8    11    14 |


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 6.1835   GPS week: 1835   MJD: 57089.500-57095.500

                                                         AC LOD  AC LOD
CENT  FLAG  |   Xpole   Ypole     Xrt     Yrt    LOD |    BIAS  BIAS RMS
            |   [uas]   [uas]   [uas/d] [uas/d]  [us]|    [us]    [us]
------------+----------------------------------------+------------------
cod   uuuuu |      -8       9      19     238      0 |      22     26
            |      22      17     106     105      6 |       3
emr   uuuuu |      22     -23      88     117    -10 |      24     27
            |      17      23     114      40      7 |       7
esa   uuuuu |      25      13      58     213      6 |      30     33
            |      14      12      66      57      4 |       2
gfz   uuuuu |      -2     -37     151    -111      4 |      16     21
            |       8      13      94     138      4 |       1
grg   uuuuu |       0      32    -285     -17      8 |      31     36
            |      23      15      98      49     14 |       1
igr   xxxxx |      18       9      90      35      2 |       1     13
            |      13      15      59      14      4 |       1
irf   xxxxx |       5     -14     -24     -93      6 |      -4     14
            |       8      12      25      27      5 |       2
jpl   uuuuu |     -11      -6     107      63      5 |      31     33
            |      31      13      80      36      7 |       2
mit   uuuuu |      -1       1    -110    -211      2 |      19     23
            |      19      13      80      55      4 |       2
ngs   uuuuu |     -19       3     -87    -125     -4 |      11     16
            |      39      20     149     199      2 |       2
sio   uuuux |      -1      33    -104    -192      9 |      44     46
            |      18      26      63      57      8 |       2


Table 7.1835.0   GPS week: 1835   Day: 0   MJD: 57089.500

                                                         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 |      31      21      11     301      3 |      27     32
emr   uuuuu |      34     -51     215     190     -7 |      33     39
esa   uuuuu |      13      23     -15     153     11 |      31     36
gfz   uuuuu |      -1     -17       9    -126      5 |      17     25
grg   uuuuu |      -7       8    -170     -82    -14 |      32     38
igr   xxxxx |      30      35      14      21      5 |       3     17
irf   xxxxx |      11       4     -17    -121      3 |      -2     20
jpl   uuuuu |     -17      -9     -45      53      3 |      34     37
mit   uuuuu |     -22      -5     -35    -226      2 |      23     29
ngs   uuuuu |      -6       7      11       1     -4 |      14     20
sio   uuuux |     -19      46     -98    -272     -3 |      47     51

Table 7.1835.1   GPS week: 1835   Day: 1   MJD: 57090.500

                                                         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 |       4      16      15     287    -11 |      26     31
emr   uuuuu |      -3     -56     126      77    -11 |      30     36
esa   uuuuu |       0      18      87     145      2 |      31     35
gfz   uuuuu |      -1     -28     211     -51     -1 |      16     23
grg   uuuuu |     -20      22    -361     -19     34 |      29     34
igr   xxxxx |       5       5     138      35      5 |       2     16
irf   xxxxx |       0      -1      -8     -47      3 |      -4     17
jpl   uuuuu |     -34     -10     185     -13     -2 |      33     36
mit   uuuuu |      -7      22     -77    -117     -2 |      20     26
ngs   uuuuu |      42       2    -133    -161     -1 |      13     19
sio   uuuux |       3      26    -176    -107      4 |      45     48

Table 7.1835.2   GPS week: 1835   Day: 2   MJD: 57091.500

                                                         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      -5     -86      58     -2 |      21     23
emr   uuuuu |      25      -2     104     135    -18 |      25     28
esa   uuuuu |      31       5     -46     226      9 |      28     31
gfz   uuuuu |      13     -34      92      -7     11 |      13     19
grg   uuuuu |     -24      35    -329     -41      6 |      29     34
igr   xxxxx |      30      10     138      39      2 |       0     12
irf   xxxxx |      -2     -25      -3     -70     12 |      -7     14
jpl   uuuuu |      24       9     123      63     -6 |      30     31
mit   uuuuu |     -21      -5     -24    -166      5 |      17     20
ngs   uuuuu |     -41     -21      61    -152     -6 |      10     15
sio   uuuux |      23      50     -80    -148      9 |      42     43

Table 7.1835.3   GPS week: 1835   Day: 3   MJD: 57092.500

                                                         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     -10      14     365      4 |      20     23
emr   uuuuu |      46      -8     -58     132    -11 |      23     27
esa   uuuuu |      38      17      92     280      5 |      29     32
gfz   uuuuu |       3     -36     177      69      2 |      15     20
grg   uuuuu |      24      41    -296      74      4 |      30     35
igr   xxxxx |      28     -11      94      17      1 |       0     12
irf   xxxxx |      10     -26       6     -86      8 |      -5     12
jpl   uuuuu |     -43      -5      63      95     10 |      29     31
mit   uuuuu |      27       3     -68    -236      4 |      18     21
ngs   uuuuu |     -63     -20      26    -500     -6 |      10     15
sio   uuuux |      11      56    -134    -229      5 |      42     44

Table 7.1835.4   GPS week: 1835   Day: 4   MJD: 57093.500

                                                         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       2     220     289      2 |      21     24
emr   uuuuu |      19     -20     -43     104    -19 |      22     25
esa   uuuuu |      23      19     147     281      5 |      31     33
gfz   uuuuu |      -9     -39      73     -78      6 |      16     20
grg   uuuuu |      27      54    -431     -47     10 |      31     36
igr   xxxxx |      17      -5      19      31      8 |       1     12
irf   xxxxx |      14     -20     -44    -118      8 |      -4     13
jpl   uuuuu |     -39     -29      95      78      6 |      30     33
mit   uuuuu |       6       1    -148    -280      4 |      19     22
ngs   uuuuu |       7      -1      -2    -196     -3 |      10     15
sio   uuuux |      12      55    -176    -210     17 |      43     45

Table 7.1835.5   GPS week: 1835   Day: 5   MJD: 57094.500

                                                         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       0      57     216      6 |      20     22
emr   uuuuu |      33      -1      43      75     -7 |      17     19
esa   uuuuu |      35      21      71     232      8 |      29     32
gfz   uuuuu |      -6     -60     273    -298      5 |      15     19
grg   uuuuu |      20      27    -172       2      5 |      30     35
igr   xxxxx |      20      11     162      59     -3 |       0     12
irf   xxxxx |      11     -10     -37     -99      9 |      -4     13
jpl   uuuuu |      33       8     143      77      7 |      30     32
mit   uuuuu |      -5     -21    -188    -203      5 |      18     21
ngs   uuuuu |     -64      25    -281      46     -6 |       8     13
sio   uuuux |     -28       1      -7    -219     18 |      43     45

Table 7.1835.6   GPS week: 1835   Day: 6   MJD: 57095.500

                                                         AC LOD  AC LOD
CENT  FLAG  |   Xpole   Ypole     Xrt     Yrt    LOD |    BIAS  BIAS RMS
            |   [uas]   [uas]   [uas/d] [uas/d]  [us]|    [us]    [us]
------------+----------------------------------------+------------------
cod   uuuuu |     -21      38    -102     149      1 |      22     24
emr   uuuuu |       4     -24     228     107      1 |      15     18
esa   uuuuu |      37     -10      71     172      0 |      33     34
gfz   uuuuu |     -13     -44     218    -286      2 |      18     20
grg   uuuuu |     -20      35    -240      -9      9 |      32     36
igr   xxxxx |      -5      15      67      41     -1 |       2     10
irf   xxxxx |      -7     -18     -64    -112     -2 |       0      9
jpl   uuuuu |       0      -8     181      84     15 |      32     34
mit   uuuuu |      18       9    -233    -250     -7 |      21     22
ngs   uuuuu |      -9      32    -290      86     -3 |       9     13
sio   uuuux |      -8      -5     -57    -157     16 |      47     48



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