[IGSREPORT-23837] Wk 1857 IGS Final Orbits

IGS ACC igs.acc at noaa.gov
Fri Aug 28 10:27:43 PDT 2015


Author:  AC Coordinator / NOAA NGS

sum-file Version 2.0
Final IGS Orbit Combination - Week 1857   (Aug 09, 2015 - Aug 15, 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:

igs1857[0-6].sp3  IGS GPS ephemeris files in SP3 format.
igs1857[0-6].clk  IGS GPS satellite and station clocks in clock RINEX format.
igs1857[0-6].cls  IGS GPS clock combination summary report.
igs18577.erp      Earth Rotation Parameters (ERP) and their rates as well as
                  Universal Time (UT1-UTC) and Length Of Day (LOD) associated 
                  with IGS ephemerides.
igs18577.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   | 1 6 1 6
                0  |  EMR   | 1 4 1 4
                0  |  ESA   | HOB2 WTZR
                0  |  GFZ   | HOB2 HOB2 UFPR
                0  |  GRG   | 4 4 6 21 CCJ2
                0  |  JPL   | 1 4 TUVA
                0  |  MIT   | BOR1 BOR1
                1  |  ALL   | 8
                1  |  COD   | YAKT YAKT
                1  |  EMR   | 4 4 14
                1  |  ESA   | 14 14 REUN
                1  |  GRG   | 1 2 3 4 5 6 7 9 11 12 13 14 15 16 17 18 19 20 21
                1  |  GRG   | 22 23 24 25 26 27 28 29 30 31 32 1 2 3 4 5 6 7 9
                1  |  GRG   | 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27
                1  |  GRG   | 28 29 30 31 32
                1  |  JPL   | 4
                2  |  EMR   | 4 4
                2  |  ESA   | POHN DGAV POHN
                2  |  GFZ   | HOB2 IRKJ HOB2 IRKJ TONG
                2  |  GRG   | 4 4 ALRT DGAR NRMD ALRT DGAR NRMD
                2  |  JPL   | 4 TUVA
                2  |  MIT   | HOB2 HOB2
                3  |  EMR   | 4 4
                3  |  GFZ   | 4 5 4 5 28 REUN CCJ2 REUN
                3  |  GRG   | 21 21 COCO POHN SYOG COCO POHN SYOG
                3  |  JPL   | 4
                4  |  COD   | 4 4
                4  |  ESA   | 1 2 3 4 5 6 7 9 11 12 13 14 15 16 17 18 20 21 22
                4  |  ESA   | 23 24 25 26 27 28 29 30 31 32 1 2 3 4 5 6 7 9 11
                4  |  ESA   | 12 13 14 15 16 17 18 20 21 22 23 24 25 26 27 28 29
                4  |  ESA   | 30 31 32
                4  |  GFZ   | 4 28 4 28
                4  |  GRG   | 6 28 28 DARW DAV1 HOFN HOLB
                5  |  ESA   | 21 21
                5  |  GFZ   | IRKJ TONG IRKJ TONG
                5  |  JPL   | 21
                6  |  GFZ   | 4 4 HOB2 MAW1 HOB2 IRKJ MAW1 TONG
                6  |  JPL   | 4 DUBO TUVA

 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
               ----+------------+----------
               G19 | 2015_08_13 | 2015074 

 7. The following orbit solutions were excluded from the combination because they
    were biasing the weighted average (generally indicated by long arc RMS). They
    were still used for statistics computation.
    
               Day | Centre | PRN list
               ----+--------+---------------
                0  |  COD   |   6
                0  |  GRG   |   6
                0  |  NGS   |   6

 8. Velocity changes were estimated to alleviate the effects of modeling problems,
    experienced by all centres,in the Long Arc (LA) process.
    
             Velocity changes per day and affected satellites:
    
               Day |  0 |  1 |  2 |  3 |  4 |  5 |  6 |
           --------+----+----+----+----+----+----+----+
           PRN G01 |    |  4 |    |    |    |    |    |
           PRN G04 |    |    |    |    |    |  4 |    |
           PRN G06 |  4 |  4 |  4 |  4 |  4 |  4 |  4 |

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

10. Small rotations were applied to all the AC orbit and ERP values in order to
    align them to the current IGS reference frame. These RX, RY and RZ rotations
    were estimated in the IGS SINEX combination process, performed by the IGS
    Reference Frame Coordinator at the Institut Geographique National (IGN).
    Starting on 19-Aug-2012 (GPS Week 1702; MJD=56158), ACs began contributing
    products based on 1d SINEX integrations. As a result, the SINEX combinations
    are now done daily instead of weekly, and the associated daily rotations are
    applied here to the orbits and ERPs. The estimated 7 transformations, from
    which only the 3 rotations are applied to the orbit and ERP values, are:
    
            |     |    DX     DY     DZ      RX     RY     RZ     SCL
     Centre | Day |   [mm]   [mm]   [mm]   [uas]  [uas]  [uas]   [ppb]
     -------+-----+---------------------------------------------------
       COD  |   0 |    -.4   -1.0    -.4     -19     10    -23     .20
       EMR  |   0 |     .2     .8    4.4      30      4     -7     .21
       ESA  |   0 |   -1.7     .2     .1       7      8     -5    -.16
       GFZ  |   0 |     .2   -1.6   -2.1     -26    -67     -6     .40
       GRG  |   0 |    1.2    2.4   18.5     -59     12    -38     .07
       JPL  |   0 |   -1.2   -8.5    4.9       3     40    -29     .49
       MIT  |   0 |    6.9   -5.4    8.8      17     11    -30     .60
       NGS  |   0 |   -1.7   -4.0   19.9     -82    -41    -14     .35
       SIO  |   0 |    4.7    2.9   23.9     -46     23    -14     .38

       COD  |   1 |     .0    -.7   -1.3     -28     26      1     .53
       EMR  |   1 |     .2     .8    5.6       4      6    -19     .27
       ESA  |   1 |    -.7   -1.0   -2.0      10     17     28     .28
       GFZ  |   1 |     .8    -.9    -.8     -33    -87    -18     .32
       GRG  |   1 |    5.4     .6   17.6     -33     -3    -13     .27
       JPL  |   1 |   -3.6   -3.6    3.6      -5     48     -7     .39
       MIT  |   1 |    6.5   -5.1   13.3       4     12    -28     .46
       NGS  |   1 |    3.5   -4.5   21.9    -108    -51     23     .32
       SIO  |   1 |   -1.6   -2.1   11.5     -34      6     -3     .21

       COD  |   2 |     .6   -1.5   -1.5     -61     14     -6     .45
       EMR  |   2 |   10.9   -1.9    5.3      24     13    -21     .41
       ESA  |   2 |   -1.1    -.9    -.2       1    -21     16     .19
       GFZ  |   2 |    -.1   -1.1   -1.4     -42    -71     -5     .52
       GRG  |   2 |    4.2   -3.7   21.1     -24      4    -24     .14
       JPL  |   2 |    3.9   -7.2   -1.7      -3      8      7     .46
       MIT  |   2 |    6.6   -4.6    7.7       4      5    -31     .58
       NGS  |   2 |    1.2   -3.0   14.5     -75    -37    -20     .47
       SIO  |   2 |    5.0     .3    9.9     -46     10    -19     .41

       COD  |   3 |    -.3   -1.5   -1.7     -32     13     -8     .50
       EMR  |   3 |    7.0    2.6   10.0      48      2      1     .30
       ESA  |   3 |    -.3    -.8   -1.1      -9    -10     53     .37
       GFZ  |   3 |     .8   -2.1   -1.6     -40    -79    -31     .26
       GRG  |   3 |    8.3    -.6   10.2     -24    -32      2    -.32
       JPL  |   3 |    7.5   -2.0     .9     -29     31     -9     .18
       MIT  |   3 |    6.9   -3.9    8.7      -1      3    -35     .50
       NGS  |   3 |    3.3    -.6   15.4     -55    -37     39     .51
       SIO  |   3 |    2.6    -.2    8.3     -30     17    -18     .25

       COD  |   4 |     .0    -.3   -1.4     -39      4     -8     .39
       EMR  |   4 |    2.3   -1.4    7.9       7     11    -48     .21
       ESA  |   4 |    -.1   -1.7   -1.7     -10     13     14     .12
       GFZ  |   4 |     .7   -1.3   -2.0     -38    -76    -29     .35
       GRG  |   4 |    7.8    1.1   14.1     -44     39    -60     .03
       JPL  |   4 |    2.9   -3.2    4.0     -32     24     12     .28
       MIT  |   4 |    6.4   -4.4    9.1       5      5    -40     .39
       NGS  |   4 |    3.4   -8.1   16.6     -78    -46    -22     .35
       SIO  |   4 |    7.8   -2.7   -1.2     -19     12      8     .21

       COD  |   5 |    1.1    -.9   -1.4     -43    -21     -4     .55
       EMR  |   5 |   -2.4   -3.2    8.8      32     17      9     .37
       ESA  |   5 |    -.6   -1.6    -.7     -20     -8      9     .20
       GFZ  |   5 |     .3   -1.6   -1.5     -32    -68    -43     .39
       GRG  |   5 |    5.2   -5.9   12.4     -25    -11    -24     .41
       JPL  |   5 |   -2.7   -3.3    4.6      12      7     17     .28
       MIT  |   5 |     .7   -5.7    7.8      16     10    -53     .49
       NGS  |   5 |    -.2    3.2   29.4    -112    -46    -40     .43
       SIO  |   5 |    1.7     .8   -4.6     -27     19    -35     .49

       COD  |   6 |    1.5   -2.0    -.8     -37    -23    -29     .43
       EMR  |   6 |   -1.4    -.3    2.9      37      6      2     .37
       ESA  |   6 |   -1.5    -.6    -.3      12    -14      5    -.14
       GFZ  |   6 |     .5   -1.6   -1.9     -56    -81    -35     .34
       GRG  |   6 |   -1.4     .6   10.6     -43     16    -51     .13
       JPL  |   6 |   -4.5     .9     .4      25     -1     23     .30
       MIT  |   6 |    3.6   -2.9    6.1       7      7    -32     .44
       NGS  |   6 |    1.9   -1.2   21.5     -76    -67      2     .37
       SIO  |   6 |     .6     .7    1.9     -26     -1    -21     .04


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

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


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

Most combination statistics are with respect to the combined orbits and
consist of seven parts. The first, Table 1, summarizes all statistics for
the week. It contains means and standard deviations over the week of
satellite ephemeris and clock correction transformation parameters for
each centre (Table 1.1857.a). It also displays the computed satellite
position sigmas for the combined orbits (Table 1.1857.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 2.1857.[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 3.1857.[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 5.1857.0-6). 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 1857 summary.                       (Aug 09, 2015 - Aug 15, 2015)

Table 1.1857.a   GPS week: 1857   MJD: 57243.000-57249.000

         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  232|    1     0    -2    15    17     8  -.01   13   11 |     480   -2156     14    109
        |    0     0     1    22    15    16   .04           |    3876    4080
emr   80|    0    -1     0     4   -34     8   .26   12   12 |    4320    -329     14    124
        |    1     1     1    16    14    12   .03           |     679     616
esa  150|    0     0    -5    -3     5   -24  -.38   13   13 |   37067   -2015     13    196
        |    1     1     1    23    19    21   .02           |   97894    1663
gfz  189|   -1     0    -1     4   -15     3   .10   13   11 |    -129    -216     13     75
        |    0     0     1    16     9    17   .03           |     323     515
grg  109|    3     0     9    -6    20    36   .01   17   16 |     183    -208     33    193
        |    1     0     1    14    27    18   .02           |     276     370
igr  n/a|    0     0    -3    -7    -5     6  -.01    5    5 |    3029    -268     15     69
        |    0     0     0    15    21     8   .02           |     383     565
jpl   80|    0     0     0   -19    21     8   .26   10   10 |    4320    -332     15     99
        |    0     1     0    25    27    41   .03           |     681     613
mit  348|    0    -2     0   -21   -26   -21  -.23   12   11 |    -291    -179     40    405
        |    0     0     1    13    20     9   .03           |     400     351
ngs  216|   -1     0     6    23    16     2   .00   10    8 |     494   -2184   1071   2706
        |    1     1     2    15    21    16   .06           |    3902    4058
sio  293|    0     0    -4    -1   -11    -9  -.11   13   13 |     ---     ---    ---    ---
        |    1     0     1    15    30    38   .03           |     ---     ---


Table 1.1857.b   GPS week : 1857   MJD: 57243.000-57249.000   

         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  |    6    8    5    4    4    4    4 |
   2  |    8    4    4    4    4    4    4 |
   3  |    3    3    3    3    3    4    3 |
   4  |    6    7    6    6    5    6    5 |
   5  |    6    5    5    4    5    4    5 |
   6  |   17    6    5    4    4    4    4 |
   7  |    5    5    4    5    4    4    4 |
   8  |   11    9   10   10    8    9    9 |
   9  |    4    3    3    3    4    3    3 |
  11  |    4    4    4    4    4    4    4 |
  12  |    5    5    4    5    4    4    5 |
  13  |    4    4    4    4    4    4    4 |
  14  |    4    7    4    4    4    4    4 |
  15  |    5    5    5    4    4    5    4 |
  16  |    5    5    5    5    5    5    5 |
  17  |    6    5    5    5    4    5    4 |
  18  |    6    5    5    6    5    5    5 |
  19  |    5    5    5    5    0    5    5 |
  20  |    5    5    5    5    4    4    4 |
  21  |    5    4    4    4    4    4    7 |
  22  |    5    5    5    5    5    5    4 |
  23  |    4    4    4    4    4    4    4 |
  24  |    4    3    3    3    3    3    3 |
  25  |    4    4    4    4    4    4    3 |
  26  |    4    4    4    4    4    4    4 |
  27  |    4    4    4    4    4    4    4 |
  28  |    5    4    5    4    4    4    4 |
  29  |    5    5    5    5    5    4    5 |
  30  |    5    4    4    4    4    3    3 |
  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 2.1857.0   GPS week: 1857   Day: 0   MJD: 57243.000                            

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  235|    1     1    -4    11   -14   -18   .07   16   12 |    -844    -968     15    105
emr   80|    0    -1    -1    -2   -37    13   .28   13   13 |    5361   -1276     14    124
esa  150|    1     3    -3    -8   -24   -42  -.39   15   15 |    1397   -5276     10    150
gfz  190|    0     0    -2    29   -14    30   .06   12   11 |     251    -720     14     88
grg  113|    2     0     9   -10    24    46   .04   15   15 |     353    -682     20    187
igr  n/a|   -1     0    -3   -25   -18    22  -.03    6    5 |    3506   -1230     17     71
jpl   80|   -1     0    -1   -56    66    -8   .29   12   12 |    5381   -1303     17    103
mit  348|    1    -2     0     0   -10   -18  -.26   13   11 |     -33    -576     51    387
ngs  218|   -2    -1     3    30     2     4  -.10   11    9 |    -632   -1371   1078   2851
sio  299|    1     1     0   -12     9   -11  -.11   16   14 |     ---     ---    ---    ---

Table 2.1857.1   GPS week: 1857   Day: 1   MJD: 57244.000                            

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  234|    2     1    -5    35    29    17  -.01   13   12 |    -952    -640     13    105
emr   81|    0     0     0   -22   -53   -16   .27   12   12 |    4426    -343     16    142
esa  150|    0     1    -5    36    37    14  -.40   15   13 |    -808    -938     10    156
gfz  193|   -1     2    -2    -7   -15     4   .11   13   11 |     -35     -17     12     72
grg  116|    5     0     8    10    31    27   .02   16   16 |      50     -20    112    257
igr  n/a|    0     0    -3   -25   -39     6   .00    5    5 |    2774      38     14     59
jpl   80|   -2    -1     0   -21    55    -7   .29   11   11 |    4430    -297     15     96
mit  349|    1    -2     1   -20   -37   -38  -.27   12   10 |     -37    -268     41    429
ngs  220|    0     0     6     3     3    16  -.03   10    8 |    -943    -655   1167   2739
sio  292|   -1     0    -5   -15   -54    -2  -.08   14   15 |     ---     ---    ---    ---

Table 2.1857.2   GPS week: 1857   Day: 2   MJD: 57245.000                            

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  236|    1     2    -2    41    30    18   .00   12   11 |    9255  -11360     14    109
emr   80|    2    -1     0     2   -24     5   .23   12   12 |    4835      -1     15    148
esa  150|    0     1    -4     3    -7    -5  -.35   11   11 |    -241    -891      8    141
gfz  190|   -1     0     0     8    -1    21   .12   14   13 |      96    -172     13     74
grg  114|    4     0    11   -13    21    16  -.02   16   16 |     181      43     20    184
igr  n/a|    0     0    -2   -10     8    11   .00    4    4 |    3492     -35     14     53
jpl   80|    0     0    -1   -34     8    -8   .29   10   10 |    4817      13     14     94
mit  349|    0    -2     0   -39   -41   -18  -.25   12   11 |    -476     214     41    413
ngs  220|   -2     1     3    33    52    -7   .02   10    9 |    9321  -11321    865   2509
sio  295|   -1     0    -3    -9   -54    17  -.14   13   14 |     ---     ---    ---    ---

Table 2.1857.3   GPS week: 1857   Day: 3   MJD: 57246.000                            

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  236|    0     0    -2    33     9    24  -.03   13   13 |   -1313    -150     16    108
emr   80|    0     0     0    25   -48    21   .23   12   12 |    4598    -998     15    141
esa  150|   -2     0    -5    15    -2   -23  -.37   13   13 |     740   -2986     11    165
gfz  190|    0    -1    -1    18   -20   -22   .14   13   11 |     157    -985     13     73
grg  103|    3    -1    11   -22    34    66  -.01   18   17 |     694    -678     22    191
igr  n/a|   -1     0    -1    14   -15    -5   .01    4    4 |    3271    -563     19     79
jpl   80|    0     3     0   -17     9   -54   .23    9    9 |    4584    -995     15     81
mit  349|    0    -3     0   -37     7   -16  -.24   11   10 |     240    -640     40    423
ngs  216|    0     1     5     0     3    30   .04    9    8 |   -1466     -22   1069   2490
sio  295|    0    -1    -4     4    11    35  -.13   12   13 |     ---     ---    ---    ---

Table 2.1857.4   GPS week: 1857   Day: 4   MJD: 57247.000                            

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  228|    0     1    -3     0    25     8  -.04   11   12 |    -574   -1357     13     81
emr   80|   -1    -2     0    10   -34    15   .22   12   12 |    3689    -235     14     83
esa  150|   -2     0    -7   -13    20   -46  -.40   12   13 |  259064    -951     39    477
gfz  186|    0     0     0     0   -17    -7   .06   12    9 |    -357    -220     11     60
grg   94|    2     0     9   -21    58    49  -.01   17   17 |     175    -318     19    179
igr  n/a|    0     0    -4     6    -2     5  -.02    4    4 |    2847    -154     16     71
jpl   80|    0     2     0   -28     1    19   .25    9    9 |    3676    -229     16    103
mit  348|    0    -2     0   -19   -26   -22  -.22   12   11 |    -194    -192     36    402
ngs  212|    0     1     5    34    -6   -18   .04    9    8 |    -664   -1229   1103   3018
sio  283|    0     0    -4    27   -12    17  -.14   12   12 |     ---     ---    ---    ---

Table 2.1857.5   GPS week: 1857   Day: 5   MJD: 57248.000                            

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  227|    1     0    -2     5    21    17  -.03   12   11 |   -1064    -423     14    129
emr   80|   -2    -2     0    -4   -29     6   .26   11   11 |    3465      52     13     99
esa  150|    0     0    -7   -29     9   -27  -.39   12   12 |    -698    -821      9    132
gfz  189|    0     0    -2    -2   -31    -1   .10   13   11 |    -486      -2     16     80
grg  111|    2     0     6    11   -22    30   .03   17   16 |     -10    -106     19    174
igr  n/a|    0     0    -4   -14    -3    -1  -.03    5    5 |    2722    -495     15     79
jpl   80|   -1     0     0     5     7    54   .22   10   10 |    3462      39     16    106
mit  349|    0    -2    -2   -13   -20   -23  -.18   12   11 |    -618     -56     39    375
ngs  216|    0     2    12    25    30    -9  -.03   10    8 |   -1038    -462    892   2756
sio  289|    1     0    -6     4    16   -46  -.08   13   12 |     ---     ---    ---    ---

Table 2.1857.6   GPS week: 1857   Day: 6   MJD: 57249.000                            

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  232|    0     0     0   -21    20    -8  -.05   10    9 |   -1145    -197     14    128
emr   80|   -2     0    -2    21   -12    13   .31   15   12 |    3868     493     13    134
esa  150|    0     0    -6   -26     3   -39  -.39   12   12 |      15   -2243      7    153
gfz  189|   -1     0     0   -18    -9     0   .13   12   11 |    -534     598     12     82
grg  114|    3     0     7     3    -7    21  -.01   16   15 |    -156     299     20    185
igr  n/a|    0     0    -4     2    29     6  -.01    4    4 |    2594     563     14     74
jpl   80|    0     2    -1    19     4    65   .21   10   10 |    3894     447     16    114
mit  349|    1    -3    -1   -22   -53    -8  -.21   12   10 |    -921     262     37    410
ngs  216|    0     1     6    35    26     3   .05    9    8 |   -1118    -234   1327   2584
sio  303|    1     0    -4   -11     0   -73  -.10   13   13 |     ---     ---    ---    ---

       
       
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 3.1857.0   GPS week: 1857   Day: 0   MJD: 57243.000                            

        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
------+--------------------------------------------------------+---------------------------------------------------------
   1E |   20   12   17    9   12    5   22   13   16   13    5 |   112  111  112  113  111  109  121  107  111  111   111
   2E |   49   14   22   17   23    7    9   14   20   27    8 |    46   29   29   36   23   27   31   27   35   28    26
   3  |   10    7   16    5   11    4    8    8    5   11    3 |    47   50   46   44   40   43   50   39   42   46    44
   4E |   23   17   15   14   18   10   17   20   13   20    6 |    83   83   85   86   80   86   87   80   87   90    84
   5  |   13   15   15   13   13    3   15   14   13   24    5 |    48   51   47   40   37   43   52   36   39   41    42
  X6E |  210  ---   27   33   99   36  ---   23   94   35   17 |  9999  --- 9999  988 9999 9999  --- 9999 9999 9999  9999
   7  |   17   13   13   11   15    6   14   13   13   13    4 |    28   29   20   29   34   25   29   24   33   21    25
  X8  |   20  ---  ---  ---   11   33   11  ---  ---  ---   10 |   116  ---  ---  ---  109  120  113  ---  ---  ---   111
   9  |   12    9   18    9   10    3   10    9   10   11    3 |    41   49   36   47   54   42   49   47   49   44    45
  11E |   12   13   14    7   13    6    9   16    8   13    4 |    39   43   36   42   43   38   43   42   40   39    39
  12  |    9   14   12   12   17    6   13   15   11   14    4 |    27   31   26   29   28   24   29   25   26   23    24
  13  |    8   12   17   14   13    5   13   11    8   14    4 |    32   37   27   42   41   31   36   31   37   40    34
  14  |   10   10   12   13   14    5   10   15    7   18    4 |    32   29   30   34   34   28   29   30   31   27    28
  15  |    9   13   15   15   16    5   15   11   10   18    4 |    43   43   43   50   47   42   41   45   43   47    43
  16  |   13   15   11   16   18    5   10   15    9   21    5 |    28   26   23   22   23   21   25   19   21   18    19
  17  |   16   11   19   16   15    7   12   13   15   21    5 |    29   31   26   41   32   30   31   30   35   26    28
  18  |   11   16   14   17   15    7   14   18   12   19    5 |    24   32   23   27   28   21   29   20   20   21    22
  19  |   12   15   12   14   14    4    9   11    9   18    4 |    19   27   18   20   21   18   26   17   20   11    18
  20  |   13   13   16   15   16    4   12   13    9   15    4 |    28   30   26   29   34   25   30   29   26   27    26
 X21E |    7   14   11    7   27    4  ---    8    8   14    4 |    27   29   24   28   36   25  ---   23   29   29    26
  22  |   10   16   14   15   16    6   11   12    9   16    4 |    29   35   25   33   38   26   33   25   26   25    28
  23  |   10   10   13   10   12    4   10   12    9   17    4 |    27   27   19   29   27   22   28   22   26   24    23
  24  |   16   12   15   11   14    8   10   10    8   16    4 |    27   25   28   25   26   26   25   19   22   25    22
  25  |   14   12   15    7   14    7    8    9    9   13    4 |    29   30   31   25   26   24   28   20   24   30    25
  26  |    9    8   16    7   16    4    8   12    7   13    3 |    38   39   43   33   40   37   38   32   38   39    36
  27  |   10   10   14    9   11    4    7    7    9   13    3 |    20   24   22   20   24   21   26   18   23   26    21
  28  |   16   11   13   13   18    7   13   12    9   16    4 |    22   26   21   27   29   23   26   22   24   24    22
  29  |   10   16   14   15   15    7   15   13   11   15    5 |    23   27   22   24   19   19   26   17   24   23    19
  30  |   15   16   17    7   17    5    9    8   10    8    4 |    27   30   31   29   33   26   27   23   33   24    26
  31  |   12   12   11   14   21    5   13   17    8   13    4 |    31   30   22   31   37   26   31   23   31   29    27
  32  |    9   10   14    9   17    6    9   13    6   16    4 |    23   23   21   21   22   19   23   21   20   28    20
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |   16   13   15   12   15    6   12   13   11   16      |T   38   37   33   68   39   35   40   31   35   34    35
 WRMS |   12   13   15   11   15    5   12   11    9   14      |NE  33   31   27   29   35   31   34   24   28   26    30
 MEDI |   12   13   14   13   15    5   11   13    9   15      |MD  29   30   26   29   34   26   30   25   31   27    26

Table 3.1857.1   GPS week: 1857   Day: 1   MJD: 57244.000                            

        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
------+--------------------------------------------------------+---------------------------------------------------------
  X1E |   32   17   15   11   15    9  ---   17   23   16    7 |   169  162  162  160  161  158  ---  161  159  158   160
   2E |   15   11    8   11   13    4    9   11   10   10    4 |    21   23   22   32   23   23   29   19   29   25    23
   3  |    9    8   15    8   14    4    8    7    6   11    3 |    38   42   38   39   35   38   44   34   36   43    38
   4E |   31   15   16   17   20    6   15   20   13   14    6 |    97   92   94   97   88   93   93   88   93   91    92
   5  |   10   13   13   13   18    2   12   12   10   14    4 |    32   37   33   32   28   30   38   25   28   30    30
   6E |   23   15   17   10   16    7   17   12   14   14    5 |   467   20  458  458  467  458   22  450  458  446   454
   7  |   20   13    8   12   18    5   13   13   11   16    5 |    29   27   13   23   26   20   27   16   27   16    19
  X8  |   13  ---  ---  ---   10   29   10  ---  ---  ---    8 |    79  ---  ---  ---   76   77   85  ---  ---  ---    79
   9  |   10    8   14    9   13    5    7    8    6   11    3 |    33   39   26   34   39   30   38   34   36   35    33
  11E |    8    9   12    9   17    5    8   11    7   11    3 |    29   35   30   32   35   32   33   30   32   30    31
  12  |   11   12   11   12   18    5   13   14   10   13    4 |    28   29   19   25   23   22   27   20   23   19    21
  13  |   11   10   12   14   16    4   11   11    8   17    4 |    19   31   21   32   28   22   30   19   21   31    23
  14  |   17   10   41   12   13    7   12   14   11   18    6 |    28   27   45   21   21   21   26   22   21   23    21
  15  |    8   13   11   14   16    3   14   12    9   18    4 |    37   39   38   40   39   37   39   37   38   40    37
  16  |   14   13   10   19   20    4   12   13   14   20    5 |    25   25   18   24   22   19   24   15   20   13    17
  17  |   13   10   14   15   17    6   10   12   10   14    4 |    23   27   21   32   28   23   28   21   24   19    22
  18  |   11   16   13   18   14    7   14   18   13   16    5 |    21   30   18   18   21   17   29   18   18   19    19
  19  |   11   13   11   15   15    5   10   11    9   18    4 |    21   25   17   18   16   17   24   14   16   10    16
  20  |    7   14   12   15   17    5   13   11    9   14    4 |    25   28   21   26   27   22   29   25   22   23    23
  21E |    5   12    9   12   17    4   10    6   11   11    3 |    23   25   20   25   25   21   25   20   21   27    21
  22  |   11   13   13   16   15    6   12   12   10   13    4 |    26   34   24   30   33   24   34   23   25   24    26
  23  |   11    9   13    9   15    5    8   11   10   15    4 |    23   25   21   24   21   20   27   17   22   22    20
  24  |   10    9   14    9   12    5    9    9    5    8    3 |    23   22   25   21   19   21   24   18   20   21    20
  25  |   10    9   16    6   14    5    9    8    8    9    3 |    24   27   25   24   22   23   27   18   21   25    22
  26  |   12   10   14   13   16    4    8    7    9   10    3 |    29   31   30   26   25   28   32   24   28   25    27
  27  |    8    9   15   10   13    3   10    9   12   14    4 |    21   26   23   22   23   21   25   18   21   22    20
  28  |   12   10    9   11   23    6   11   11    8   14    4 |    19   24   17   22   30   18   24   19   22   23    19
  29  |    9   14   11   16   15    3   13   12   10   13    4 |    22   26   18   25   17   19   25   17   19   15    17
  30  |   15   13   13    9   15    4    8    7    7   10    3 |    23   24   26   23   25   22   24   18   24   18    20
  31  |   12   14   11   15   21    5   11   12   12   10    4 |    21   26   16   26   29   21   26   16   25   15    20
  32  |    9   10   13   10   13    5    8   13    8   11    3 |    26   26   27   25   26   24   27   25   22   29    24
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |   13   12   15   13   16    5   11   12   10   14      |T   48   35   45   47   48   45   32   42   45   44    45
 WRMS |   12   12   13   11   16    5   11   10    8   15      |NE  28   28   23   24   27   25   31   20   23   21    24
 MEDI |   11   12   13   12   15    5   10   11   10   14      |MD  25   27   23   25   26   22   27   20   23   23    22

Table 3.1857.2   GPS week: 1857   Day: 2   MJD: 57245.000                            

        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
------+--------------------------------------------------------+---------------------------------------------------------
   1E |   20   12   13   13   18    5   12   12    9   12    4 |    98   95   93   96   95   94   55   94   97   95    95
   2E |   17   11    7   13   17    3    7   10    9   10    4 |    27   29   24   33   23   26   29   22   30   28    25
   3  |    5    9   13   10   11    3    7    8    7   13    3 |    42   46   43   41   40   40   46   37   42   45    42
   4E |   20   14   10   32   15    6   13   19   14   11    6 |    84   84   83   82   83   82   83   74   84   77    80
   5  |    9   11   13   16   15    3   11   10   13   12    4 |    40   45   39   39   29   37   43   28   37   34    36
   6E |   20   13   17   11   16    3   10   11   10   15    5 |   391   21  387  382  392  387   18  386  383  386   386
   7  |   17   12    6   11   18    5   11   11    9   15    4 |    32   29   21   30   34   27   29   24   31   25    25
  X8  |   16  ---  ---  ---   14   30   11  ---  ---  ---    9 |    81  ---  ---  ---   76   76   80  ---  ---  ---    78
   9  |    9    8   12    8   13    3    8    8    5   12    3 |    34   42   31   39   46   36   43   40   42   39    38
  11  |   11    9   10    9   26    5    7   12    7    8    4 |    31   34   27   32   38   29   36   33   31   32    30
  12  |   10   12    9   11   19    4   10   11   10   12    4 |    28   28   20   26   24   22   27   21   25   21    21
  13  |   11   10   13   15   13    4   10   12   11   15    4 |    29   33   25   38   33   25   32   24   27   30    27
  14  |   11   10   11   15   13    5    7   15    9   16    4 |    28   25   27   26   26   22   27   23   26   23    23
  15  |    6   12   11   14   13    2   13   14   13   18    4 |    28   29   27   31   29   26   30   28   33   24    26
  16  |   14   19    7   20   21    4   10   14   10   19    5 |    27   29   19   25   23   20   24   19   26   18    19
  17  |   11   10   13   16   14    5    9   13    9   18    4 |    29   31   23   35   28   27   30   27   32   26    26
  18  |   11   17   12   18   16    6   12   18   15   16    5 |    20   27   20   20   21   16   26   17   22   18    17
  19  |   13   14    9   17   20    4   10   11   11   17    4 |    21   28   17   24   20   18   27   16   22   12    18
  20  |   11   13   12   16   14    3   11   12   12   12    4 |    25   26   19   27   23   21   27   23   22   20    21
  21E |    9   14    5   14   13    3   10    9    9    9    3 |    27   25   20   28   24   24   20   25   27   26    23
  22  |   13   15   13   16   19    4   11   11   14   16    5 |    25   30   22   29   32   23   30   22   28   22    24
  23  |    8   10   12   10   13    4    6   11   10   13    3 |    25   27   23   26   24   22   27   20   27   22    22
  24  |   11    9   11    7   10    4    8    8   10    7    3 |    24   26   27   25   25   23   25   21   24   24    22
  25  |   12   13   12    9   13    3    8    8   10    8    3 |    24   25   25   25   25   21   25   20   23   23    22
  26  |    9   15   12   15   18    3    8    9    9    8    4 |    34   35   33   29   34   30   33   27   35   29    31
  27  |    9   11   12    9   16    3    9    8   10   10    3 |    23   24   20   23   23   20   24   18   24   21    20
  28  |   15   11    9   15   20    5   10   11   12   17    4 |    25   26   19   26   29   21   25   22   28   25    22
  29  |   10   13   10   16   16    3   11   12   11   13    4 |    25   24   18   25   18   18   24   16   23   15    17
  30  |   13   15   13    7   11    5    8    9    6    8    3 |    25   26   29   26   28   24   25   23   29   24    24
  31  |   13   13   11   15   23    3    8   13   10   12    4 |    24   26   17   29   32   22   25   20   29   18    21
  32  |    9    9   11   11   17    3    7    9    8   12    3 |    16   21   19   17   19   16   21   17   18   23    17
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |   12   12   11   14   16    4   10   12   10   13      |T   44   33   40   44   45   41   32   39   44   40    41
 WRMS |   11   12   11   13   16    4   10   11    9   14      |NE  29   28   23   26   29   25   30   21   27   22    25
 MEDI |   11   12   11   14   16    4   10   11   10   12      |MD  27   28   23   28   28   24   27   23   28   24    24

Table 3.1857.3   GPS week: 1857   Day: 3   MJD: 57246.000                            

        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
------+--------------------------------------------------------+---------------------------------------------------------
   1E |   17    8   15   13   19    3    8   12    5    9    4 |    67   61   63   68   65   61   47   58   59   62    62
   2E |   20   11    9   12   22    4    8    9   10    8    4 |    25   28   27   32   19   27   29   22   29   25    25
   3  |    8    7   14    9   13    2    6    8    5    9    3 |    47   49   47   45   42   45   49   44   44   49    46
  X4E |   25   14   11   13  ---    6   14   16   12   14    5 |   111  114  112  111  ---  112  114  106  113  106   110
   5  |   12   11   14   13   15    3   10   11    9    8    4 |    38   43   40   35   33   36   43   30   36   37    36
   6E |   17   13   17   12   21    3   10   10    6    8    4 |   292   21  291  288  291  288   21  289  287  285   288
   7  |   24   13    6   11   15    5    9   12    9   15    4 |    33   27   21   26   29   24   28   21   25   22    22
  X8  |   17  ---  ---  ---   18   26    7  ---  ---  ---    9 |    90  ---  ---  ---   84   95   90  ---  ---  ---    87
   9  |   11    8   13    9   11    5    6    8    5   11    3 |    36   45   34   40   48   38   43   42   39   39    39
  11  |   11    9   11    6   22    5    7    8    7    8    3 |    34   35   29   33   35   30   35   31   29   30    30
  12  |   13   14   11   12   20    4   11   12   11   11    4 |    32   32   25   27   28   26   30   25   25   23    24
  13  |   10   10   15   12   19    4    9    9    8   12    4 |    26   35   26   37   37   29   33   26   29   33    29
  14  |   12    9   12   14   15    5   10   14    9   16    4 |    32   28   29   27   28   28   28   29   32   25    27
  15  |    9   11   12   12   14    5   11   11    8   14    4 |    44   47   47   46   48   46   45   46   45   43    44
  16  |   18   14    9   20   20    4   11   13   11   20    5 |    29   25   20   24   22   19   22   19   21   17    18
  17  |    9   11   17   16   14    6   10   11    9   15    4 |    28   34   28   40   31   32   35   32   34   28    30
  18  |   10   18   14   17   20    6   12   17   12   18    5 |    23   29   20   23   27   21   27   22   23   18    21
 X19  |   13   13   10   13  ---    4    9   11   11   17    4 |    22   27   18   22  ---   19   25   19   19   14    18
  20  |   12   12   16   14   17    5    9   10   12   12    4 |    26   29   24   29   29   24   28   28   26   21    24
  21E |    8   20    8   13   18    5   11   10    7    9    4 |    26   30   22   31   23   25   25   26   24   24    24
  22  |   13   14   15   16   23    3   11   12    9   14    4 |    28   33   22   32   35   27   32   27   30   21    27
  23  |   10   10   13   12   13    4    8   10    9   13    3 |    24   26   19   25   25   23   26   22   23   22    21
  24  |    7   10   14    7   13    4    9    7    8   10    3 |    24   25   25   21   25   22   24   19   20   23    21
  25  |   12    9   15    6   16    4    9    9    8    8    3 |    27   31   31   24   24   25   28   23   26   24    25
  26  |   14   12   13   15   19    3    8    9    9    9    4 |    36   32   33   27   31   29   31   25   30   28    28
  27  |    9    9   13    8   18    5    8   11    9   12    3 |    19   23   21   22   22   18   23   17   16   22    18
  28  |   14    9   10   13   18    5   13   11    7   13    4 |    25   30   23   27   31   24   27   24   27   24    24
  29  |   10   15   12   15   17    5   12   13    9   12    4 |    27   29   23   24   16   22   27   19   20   20    20
  30  |   20   15   14    9   13    5    9    7    6    7    4 |    27   26   29   22   27   23   24   20   24   22    22
  31  |    9   16   11   15   27    3   10   10   10   11    4 |    25   27   15   24   34   21   25   19   26   17    21
  32  |   12   10   12    9   21    5    7    9    8   12    3 |    32   27   29   26   29   27   28   25   28   32    27
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |   13   12   13   13   18    4    9   11    9   12      |T   43   34   39   41   42   41   35   38   40   38    40
 WRMS |   13   12   13   11   17    4    9   10    8   13      |NE  31   30   25   26   31   28   31   24   26   23    27
 MEDI |   12   11   13   12   18    5    9   10    9   12      |MD  28   29   26   27   29   27   28   25   27   24    25

Table 3.1857.4   GPS week: 1857   Day: 4   MJD: 57247.000                            

        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
------+--------------------------------------------------------+---------------------------------------------------------
   1E |    8   10   13   12   17    5    6   13    6    7    3 |    59   60   59   63   64   59   44   57   56   60    59
   2E |   13   11    9   11   22    5   10    9    9   10    4 |    27   29   25   28   22   25   26   25   28   23    25
   3  |    7    7   13    7   13    3    5    9    7   11    3 |    42   45   41   41   38   43   47   38   42   48    42
   4E |   12   12   13   13   17    6   13   16   10   15    4 |   115  116  119  121  146  119  118  119  119  118   118
   5  |    9   11   16   12   15    4   11   12    9   18    4 |    32   36   32   27   26   29   35   21   30   30    28
   6E |    7   13   16   12   17    4    9   10    8    8    4 |   191   21  199  195  201  198   20  199  193  197   197
   7  |   18   11    8   11   15    5   11   10    8   15    4 |    27   26   15   23   27   22   25   19   25   18    20
  X8  |   13  ---  ---  ---   15   15    5  ---  ---  ---    7 |    86  ---  ---  ---   82   86   87  ---  ---  ---    85
   9  |   17    7   13    8   12    4    6    7    6   11    3 |    34   44   30   36   44   35   41   36   40   35    37
  11  |    7   12   10    6   20    4    5   11    7   12    3 |    30   30   29   31   37   29   31   32   32   31    30
  12  |   10   12   11   11   20    5   10   12   10   11    4 |    26   30   21   24   27   23   27   22   23   20    22
  13  |   10    9   13   11   13    4    8   10    8   12    3 |    22   32   23   34   31   25   30   24   27   31    27
  14  |   11   11   11   14   12    4    8   16    9   17    4 |    25   27   23   21   25   20   26   24   23   21    21
  15  |   11   11   12   15   14    5   11   13   10   15    4 |    54   51   51   56   56   51   52   52   48   53    51
  16  |   17   14    9   17   22    5   11   15   11   19    5 |    28   27   20   23   20   21   24   21   24   16    19
  17  |    8   12   12   14   14    5    9   10   11   15    4 |    26   29   25   36   28   27   30   25   30   22    26
  18  |   14   15   15   17   20    5   11   18   12   15    5 |    21   28   20   23   25   18   26   22   21   16    19
 X19  |    2  ---  ---  ---  ---   28  ---  ---  ---  ---    0 |    19  ---  ---  ---  ---   15  ---  ---  ---  ---    19
  20  |    8   11   14   12   15    5   10   10   12   11    4 |    27   31   23   31   32   25   29   29   25   24    26
  21E |   11   10    8   13   22    3    9   11    8   10    4 |    25   27   25   30   26   25   27   30   26   25    25
  22  |   14   14   15   17   20    3   10   11   12   14    5 |    28   33   23   35   36   26   32   27   32   23    28
  23  |   12   10   13    7   14    5    7   11    8   13    3 |    19   25   20   20   21   20   26   19   23   20    20
  24  |    7   10   14    7   14    4    6    7   10    7    3 |    23   26   30   23   26   24   28   23   21   24    24
  25  |   10   11   14    4   14    5    9   12   10   12    3 |    21   31   28   21   24   23   27   22   19   25    23
  26  |   14   11   14   13   19    5    7    8    9    7    4 |    33   35   31   28   28   27   30   26   31   26    29
  27  |    8    9   13    8   14    4    7   14    8   13    3 |    19   24   19   19   17   18   22   18   18   17    17
  28  |    8   12    8   10   20    5   12   10   10   13    4 |    20   28   19   24   28   20   25   21   23   21    21
  29  |   13   14   10   11   19    4   10   12   11   13    4 |    26   30   23   23   21   23   29   23   23   19    21
  30  |   12   14   15    7   12    3    9    5    6    8    3 |    22   26   28   23   25   22   24   20   24   20    21
  31  |   15   15   11   13   24    4    9   12    9   11    4 |    22   27   17   23   30   19   24   18   22   14    19
  32  |   10   11   12    8   18    5    7   12    8   10    3 |    21   20   20   19   18   18   21   19   21   22    18
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |   11   12   12   12   17    4    9   12    9   12      |T   37   34   35   37   41   36   34   35   36   35    36
 WRMS |   12   12   13    9   17    4    9   11    8   12      |NE  29   30   24   26   30   26   31   24   25   22    27
 MEDI |   11   11   13   11   15    5    9   11    9   12      |MD  26   29   25   27   27   25   27   24   25   23    25

Table 3.1857.5   GPS week: 1857   Day: 5   MJD: 57248.000                            

        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
------+--------------------------------------------------------+---------------------------------------------------------
   1E |   12   10   14   11   16    5    8   18    8   10    4 |    92   92   90   95   91   90   79   92   91   90    91
   2E |   18   10    6   10   16    4    7   10    9    9    4 |    27   30   27   32   31   28   28   23   29   28    26
   3M |   11    9   14    8   13    4    7   20    6   12    4 |    58   61   54   56   56   56   59   59   53   63    57
   4E |   22   15   16   15   21    7   16   16   23   16    6 |   172  178  172  176  164  173  179  169  174  172   174
   5  |   10   11   15   16   15    3   10   12   10   13    4 |    32   37   32   30   30   29   33   22   27   32    28
   6E |   16   10   15    8   18    3    8    7    9    7    4 |   264   18  261  263  264  262   19  260  264  257   260
   7  |   17   12   11   12   18    6   11   11    9   11    4 |    29   26   19   25   28   21   25   16   25   17    20
  X8  |   13  ---  ---  ---   16   13    8  ---  ---  ---    8 |    69  ---  ---  ---   66   68   74  ---  ---  ---    70
   9M |    8    7   12    8   16    4    9    6    8   12    3 |    31   38   26   31   38   29   38   30   33   29    31
  11  |    9   10    9    7   17    3    6   12    8   15    3 |    42   42   44   44   45   42   44   39   40   47    42
  12  |   13   12   10   14   19    4   10   10   10   13    4 |    29   27   19   26   25   22   25   19   22   18    20
  13M |    9   10   13   12   10    5    8   10    8   11    3 |    24   30   22   34   27   24   29   22   28   28    25
  14  |    8   12   11   14   14    4    8   15   10   17    4 |    24   27   23   23   25   21   26   24   26   21    22
  15  |    7   11   13   14   23    4   11   12   10   13    4 |    95   97   98  100   94   98   96  100   96   97    97
  16  |   14   16    9   17   21    5   11   14   10   18    5 |    26   27   18   23   21   19   24   20   22   16    19
  17M |   11   10   11   19   17    5   10   10    8   19    4 |    29   32   29   39   30   31   32   27   30   22    28
  18  |   12   16   14   17   18    5   11   16   12   15    5 |    22   26   18   24   26   17   24   19   21   16    18
  19  |   13   13   10   16   19    6   11   11   13   18    4 |    18   21   15    9    9   14   19   13   16   10    12
  20  |   11   13   13   12   16    5   10   10   10   15    4 |    23   24   19   25   27   21   24   23   23   18    20
  21E |   10   10   10   10   19    4    9   11    7   10    3 |    20   31   20   25   23   19   19   27   23   25    22
  22  |   12   14   15   17   19    4   11   12   12   13    4 |    26   32   20   30   34   23   30   24   28   21    25
  23M |   11    8   11   10   17    6    9    9    9   10    3 |    19   26   20   20   22   19   28   18   23   20    20
  24  |    7    8   14    9   12    3    8    8    7   10    3 |    20   23   24   21   24   20   21   20   21   20    20
  25  |    8    8   13    5   18    4   10    9    9    9    3 |    22   26   26   21   24   22   24   21   23   25    22
  26  |   13    8   13   12   20    4    8    8   10    9    4 |    30   32   31   27   27   27   30   25   30   27    28
  27  |    8    7   15    4   15    4    8   15    7   12    3 |    17   23   19   19   17   18   22   18   18   22    18
  28  |   11   10    7   14   16    6   11   10    7   13    4 |    23   26   21   24   28   21   24   20   21   21    20
  29  |    9   12   10   14   17    4   12   10   10   15    4 |    23   28   19   23   19   20   25   18   22   18    19
  30  |   10   12   14    7   10    6    9    6    5    6    3 |    23   24   29   24   26   22   26   19   23   21    22
  31  |   10   12   10   16   26    5    9   11    8   11    4 |    22   30   18   29   34   21   27   20   26   18    22
  32M |   14   11   10   12   16    5    7   12    8   12    4 |    30   32   31   28   32   28   31   29   30   36    30
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |   12   11   12   13   17    5   10   12   10   13      |T   44   38   42   44   45   42   38   41   43   41    42
 WRMS |   11   11   12   11   16    5   10   11    8   12      |NE  30   30   26   27   30   27   31   24   27   24    27
 MEDI |   11   10   12   12   17    4    9   11    9   12      |MD  26   28   23   26   28   22   27   22   26   22    22

Table 3.1857.6   GPS week: 1857   Day: 6   MJD: 57249.000                            

        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
------+--------------------------------------------------------+---------------------------------------------------------
   1E |    7    9   12   10   13    3    9   11    7   10    3 |    74   72   74   77   74   73   54   71   72   72    73
   2E |   14   12    9    8   16    5    9   10    9    8    3 |    23   28   23   28   21   25   27   19   27   24    23
   3  |    6   11   10    9   11    3    6    7    7    8    2 |    49   53   46   47   46   47   52   45   48   53    48
   4E |   14   14    9   17   17    8   14   15   16   18    5 |   128  128  132  134  121  131  130  123  137  120   129
   5  |    9   12   15   12   17    3   11   13   12   19    4 |    38   45   42   34   32   36   45   29   32   41    36
   6E |   11   12   13    8   16    4    9    8    8    8    3 |   305   27  304  305  308  304   29  305  302  304   304
   7  |   15   14    7   10   15    4   11   14    9   13    4 |    30   26   17   27   28   22   25   19   29   16    21
  X8  |   11  ---  ---  ---   17   16    8  ---  ---  ---    8 |   119  ---  ---  ---  112  117  120  ---  ---  ---   118
   9  |    8    8   12   10   12    4    8    7    7    9    3 |    40   47   38   45   52   42   47   45   47   41    43
  11  |    6    9    9   10   22    4    5   10    9   12    3 |    25   29   23   28   33   24   28   26   28   26    25
  12  |   15   12   11   15   18    4    8   10   11   13    4 |    28   27   20   25   24   20   24   18   24   16    20
  13  |    7   10   15   11   13    3    8   11   10   15    4 |    27   32   22   36   37   27   31   26   33   34    28
  14  |    8   11   12   13   14    6   10   16    8   14    4 |    29   28   26   33   29   26   27   29   32   26    27
  15  |    8   12   14   12   14    6   11   13   10   16    4 |    76   74   80   77   80   79   77   76   79   72    76
  16  |   13   11   10   18   23    3   10   11    8   18    4 |    23   25   18   26   22   19   23   18   21   15    17
  17  |    7   12   12   13   17    5    8    9    9   17    4 |    24   29   20   31   27   25   28   26   26   19    23
  18  |    8   15   15   18   16    6   12   19   11   16    5 |    23   30   20   31   29   22   27   28   27   21    23
  19  |    9   14   10   17   19    5   11   17    9   20    5 |    16   20   15   12    6   12   18   16   11   12    12
  20  |   10   11   15   12   16    5    9   11   11   11    4 |    29   30   22   32   31   25   27   30   29   23    26
  21E |   10   51   11   10   18    5   24   13    8   11    7 |    22   59   19   28   21   23   27   30   27   26    25
  22  |    9   13   13   15   18    3   11   11   10   11    4 |    30   36   24   41   43   30   34   33   37   27    32
  23  |    8   11   10   10   16    5    7   10    9   10    3 |    25   27   23   25   25   24   28   23   29   22    23
  24  |    7   10   13   11    9    5    8    7    8    9    3 |    19   22   25   21   21   20   21   20   21   20    19
  25  |    8   10   14    6   13    4    9    7    8    9    3 |    22   27   26   21   22   21   23   21   19   24    21
  26  |   10   12   13   13   19    3    7    9    8   11    4 |    29   35   30   24   30   26   29   26   31   25    27
  27  |    6   10   14    8   15    4   10   17    8    9    4 |    20   27   19   24   21   20   24   18   21   16    19
  28  |    9   18    9   12   20    3    9   11    9   12    4 |    18   25   17   25   30   18   22   18   20   17    18
  29  |   13   13   12   13   18    4   12   12   11   14    4 |    29   33   24   27   25   25   30   22   28   20    23
  30  |    8   14   12    6   10    4    8    8    5    6    3 |    24   25   29   26   24   24   25   18   28   22    23
  31  |    7   14    9   17   24    4    9   13    7   12    4 |    21   27   17   32   29   21   26   21   27   14    21
  32  |    9    9    8    9   16    4    7   14    8   10    3 |    21   23   21   21   23   20   22   20   22   26    20
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |   10   15   12   12   16    4   10   12    9   13      |T   44   37   40   44   46   43   37   40   43   39    43
 WRMS |    9   12   12   11   15    4   10   10    8   13      |NE  32   31   26   29   33   30   34   25   28   23    30
 MEDI |    9   12   12   11   16    4    9   11    9   11      |MD  27   28   23   28   29   25   27   26   28   24    23



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 4.1857   GPS week: 1857   MJD: 57243.0-57249.0

CENT| CLK EPO  |        BRUX       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 2961 |U    7     7    18 |U    5     7    25 |U    9     9    23 |
emr | emr 2848 |     9     8    21 |U    6     7    26 |    10    11    24 |
esa | esa 2866 |     8     8    19 |U    6     7    25 |    10    10    22 |
gfz | gfz 2861 |U    8     7    18 |U    7     9    30 |U    9    10    21 |
grg | grg 2902 |U    9     9    23 |U    8    10    36 |    11    10    25 |
igr | igr 2848 |     8     7    19 |     5     7    25 |    10    10    21 |
igs | igs 2913 |     8     8    19 |     5     7    24 |    10     9    21 |
jpl | jpl 2916 |     9     8    22 |U    6     7    25 |U   10    11    23 |
mit | mit 2866 |     8     8    20 |U    7     8    28 |U   10    11    23 |



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 5.1857.0   GPS week: 1857   Day: 0   MJD: 57243.0

CENT| CLK EPO  |        BRUX       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 2976 |    12     9    20 |     7     8    33 |    10    11    30 |
emr | emr 2780 |    11     9    21 |     7     7    28 |    13    11    29 |
esa | esa 2880 |    11     9    21 |     6     7    26 |    10    11    22 |
gfz | gfz 2876 |    11     7    19 |     6     7    30 |     9     9    22 |
grg | grg 2976 |    13     7    21 |    11    15    55 |    12     9    29 |
igr | igr 2762 |    11     9    20 |     6     7    23 |    10     8    20 |
igs | igs 2898 |    11     8    18 |     6     7    25 |    10     9    24 |
jpl | jpl 2780 |    12     9    24 |     9     9    35 |    13    11    28 |
mit | mit 2880 |    13     9    22 |     8    11    23 |    18    12    32 |

Table 5.1857.1   GPS week: 1857   Day: 1   MJD: 57244.0

CENT| CLK EPO  |        BRUX       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 2975 |     7     9    24 |     4     7    20 |     7     7    21 |
emr | emr 2876 |     9    10    31 |     6     9    21 |    10    11    22 |
esa | esa 2880 |     9    10    28 |     5     6    16 |     9     9    22 |
gfz | gfz 2876 |     8     9    26 |     5     6    21 |     9     9    19 |
grg | grg 2759 |     9     9    27 |     6     6    22 |    10    12    26 |
igr | igr 2878 |     9     9    28 |     5     6    18 |     8     9    21 |
igs | igs 2871 |     8    10    27 |     5     6    20 |     9     9    20 |
jpl | jpl 2876 |    10    10    32 |     6     6    16 |    10    10    22 |
mit | mit 2880 |     9    11    27 |     5     7    24 |     7    13    18 |

Table 5.1857.2   GPS week: 1857   Day: 2   MJD: 57245.0

CENT| CLK EPO  |        BRUX       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 2975 |     4     4    11 |     5     7    31 |     6     5    17 |
emr | emr 2876 |     6     5    16 |     7     8    35 |     7     8    19 |
esa | esa 2880 |     4     4    11 |     6     7    29 |     8     8    18 |
gfz | gfz 2876 |     4     4    11 |     6     8    33 |     7     7    16 |
grg | grg 2970 |     6     5    14 |     7     9    38 |     8     6    19 |
igr | igr 2878 |     4     4    11 |     5     8    32 |     7     7    16 |
igs | igs 2916 |     4     4    11 |     5     8    34 |     7     6    15 |
jpl | jpl 2971 |     5     5    14 |     6     7    37 |     7     7    16 |
mit | mit 2880 |     4     3    13 |     6     7    35 |     7     7    17 |

Table 5.1857.3   GPS week: 1857   Day: 3   MJD: 57246.0

CENT| CLK EPO  |        BRUX       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 2976 |     7     8    16 |     5     7    26 |     9     9    24 |
emr | emr 2876 |    10     9    16 |     5     6    25 |     8    11    25 |
esa | esa 2880 |     8     7    14 |     6     7    27 |     8     9    21 |
gfz | gfz 2870 |     8     8    15 |     6     8    30 |     8     9    21 |
grg | grg 2782 |    10    12    28 |     7     7    36 |    11    12    23 |
igr | igr 2880 |     7     7    15 |     6     6    28 |     9    10    21 |
igs | igs 2976 |     7     8    15 |     6     6    25 |     9     9    20 |
jpl | jpl 2972 |     7     7    17 |     7     7    24 |     9    11    20 |
mit | mit 2880 |     9     9    15 |     8     8    31 |     9     9    22 |

Table 5.1857.4   GPS week: 1857   Day: 4   MJD: 57247.0

CENT| CLK EPO  |        BRUX       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 2880 |     9     7    19 |     4     4    19 |     8     9    16 |
emr | emr 2780 |    10     7    22 |     7     5    20 |     9    10    17 |
esa | esa 2784 |     9     6    20 |     5     4    18 |     9    10    19 |
gfz | gfz 2778 |     9     5    19 |    14    16    41 |    10    11    16 |
grg | grg 2878 |    10     9    23 |    12    13    38 |    10     7    20 |
igr | igr 2784 |     9     6    19 |     5     4    21 |     9    10    16 |
igs | igs 2876 |     9     8    21 |     5     5    19 |     9     9    16 |
jpl | jpl 2876 |    10     8    23 |     6     5    16 |     9    12    21 |
mit | mit 2784 |     9     7    21 |     6     7    23 |     8     9    19 |

Table 5.1857.5   GPS week: 1857   Day: 5   MJD: 57248.0

CENT| CLK EPO  |        BRUX       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 2974 |    10    11    23 |     6    10    27 |     9    11    21 |
emr | emr 2876 |    12    11    27 |     6     9    29 |     9    10    21 |
esa | esa 2880 |    10    12    27 |     6     9    32 |    10    11    19 |
gfz | gfz 2877 |    10    11    26 |     6    10    32 |    10    11    20 |
grg | grg 2976 |    12    13    27 |     7     9    33 |    10     9    21 |
igr | igr 2880 |    10    12    26 |     6     9    29 |     9    11    20 |
igs | igs 2880 |    11    11    25 |     6    10    26 |    11    10    21 |
jpl | jpl 2972 |    11    12    28 |     6    10    29 |    10    11    21 |
mit | mit 2880 |    11    12    24 |     8    10    31 |    10    12    21 |

Table 5.1857.6   GPS week: 1857   Day: 6   MJD: 57249.0

CENT| CLK EPO  |        BRUX       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 2976 |     4     4    14 |     4     7    20 |    13    13    30 |
emr | emr 2876 |     5     4    16 |     5     8    28 |    15    15    34 |
esa | esa 2880 |     4     5    15 |     5     7    24 |    15    15    35 |
gfz | gfz 2876 |     4     4    13 |     5     7    25 |    14    15    29 |
grg | grg 2976 |     6     6    18 |     5     9    29 |    16    14    39 |
igr | igr 2879 |     4     6    14 |     5     7    23 |    15    14    31 |
igs | igs 2975 |     4     4    14 |     5     8    22 |    14    14    31 |
jpl | jpl 2971 |     5     4    16 |     6     9    21 |    15    15    32 |
mit | mit 2880 |     5     4    16 |     7     9    27 |    13    13    31 |


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 6.1857   GPS week: 1857   MJD: 57243.500-57249.500

                                                         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      -3      55     -7 |      17     24
            |      35      21     102      81      5 |       2
emr   uuuuu |      58     -11     143     123      7 |      47     50
            |      20      31      88     153      8 |       3
esa   uuuuu |       5       0     -24      85      0 |      12     21
            |      33      25      36     166      3 |       2
gfz   uuuuu |     -17     -25      83    -136      4 |      18     27
            |       7      14      48     102      3 |       3
grg   uuuuu |      10      22     -13      25    -15 |      54     56
            |      20      16      63      70     10 |       2
igr   xxxxx |      -3      17       0     -22      2 |       0     18
            |      23      20      53      61      5 |       3
irf   xxxxx |      19      -1     -33      -9      0 |      -2     18
            |      14      15       8      23      4 |       2
jpl   uuuuu |     -10      21      66       7      6 |      33     40
            |      54      19      70     151     12 |       4
mit   uuuuu |       4      26     -68    -137     -4 |      22     27
            |      13      14      17      44      6 |       2
ngs   uuuuu |     -34     -27     -90     -88      3 |      12     22
            |      28      26      76     101      5 |       3
sio   uuuux |      18       6     -81     164    -10 |      68     70
            |      18      18      51      98      5 |       3


Table 7.1857.0   GPS week: 1857   Day: 0   MJD: 57243.500

                                                         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 |      60      17    -139     226      3 |      19     27
emr   uuuuu |      30     -75     288     -31     13 |      44     48
esa   uuuuu |      70      15      11     373     -5 |      13     23
gfz   uuuuu |     -14     -42     150     -87      0 |      18     28
grg   uuuuu |      -2      52    -138     -94     -8 |      57     60
igr   xxxxx |      18      55      39     -50     -1 |      -1     19
irf   xxxxx |      36      22     -42       0     -5 |       0     20
jpl   uuuuu |    -120      31       9    -299     19 |      29     37
mit   uuuuu |       6      24     -64    -162     -5 |      26     32
ngs   uuuuu |      -5     -29     -98     -10     -3 |      13     24
sio   uuuux |      25      43     -50     318     -2 |      72     75

Table 7.1857.1   GPS week: 1857   Day: 1   MJD: 57244.500

                                                         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 |     -51     -34    -119     -24     -8 |      19     27
emr   uuuuu |      57      13     148      -6      6 |      46     50
esa   uuuuu |      -8     -49     -18     232     -2 |      12     23
gfz   uuuuu |      -6     -23      56     -12      6 |      17     28
grg   uuuuu |       8      15      38     -13    -16 |      57     60
igr   xxxxx |      38      25      12      91      8 |      -1     19
irf   xxxxx |      14      14     -44      26     -4 |      -1     20
jpl   uuuuu |     -42       8     112     -31     22 |      31     38
mit   uuuuu |       7      47     -95     -89     -9 |      24     32
ngs   uuuuu |       3       9     -53     -40      2 |      11     24
sio   uuuux |      30     -11     -64      64     -8 |      71     74

Table 7.1857.2   GPS week: 1857   Day: 2   MJD: 57245.500

                                                         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 |     -11      -6      98       0    -12 |      16     22
emr   uuuuu |      32     -17     217      -4     -4 |      44     47
esa   uuuuu |      28      -5      28      93      0 |       9     17
gfz   uuuuu |     -24     -37      50    -117      5 |      14     22
grg   uuuuu |       2      12     -47      39    -27 |      53     56
igr   xxxxx |      -8      14     -37     -52      2 |      -3     16
irf   xxxxx |      28      -8     -20     -23     -2 |      -5     16
jpl   uuuuu |       2      45     -24      11     12 |      30     35
mit   uuuuu |       7      16     -47    -145     -9 |      20     25
ngs   uuuuu |     -46     -27    -184      20      8 |       8     17
sio   uuuux |      22       2     -18     107    -11 |      67     69

Table 7.1857.3   GPS week: 1857   Day: 3   MJD: 57246.500

                                                         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     -27     123      46     -9 |      16     22
emr   uuuuu |      81       3      19      68     -1 |      46     49
esa   uuuuu |     -12     -11     -40      52      3 |      11     20
gfz   uuuuu |     -14     -33     143     -35     10 |      16     25
grg   uuuuu |       6      37       2      41    -16 |      53     55
igr   xxxxx |     -15      -3      84     -41      7 |      -1     18
irf   xxxxx |      22     -20     -36     -13      2 |      -4     17
jpl   uuuuu |      19      27      -8      19     -1 |      33     40
mit   uuuuu |       2       9     -83    -105     -3 |      21     26
ngs   uuuuu |     -65       2      34     -70      3 |      11     21
sio   uuuux |      27      -9    -168      77    -12 |      67     69

Table 7.1857.4   GPS week: 1857   Day: 4   MJD: 57247.500

                                                         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 |     -32      -7       9      46     -7 |      15     21
emr   uuuuu |      66      13      80     196      3 |      46     50
esa   uuuuu |     -26       9     -65     -93      1 |      10     20
gfz   uuuuu |     -25     -24      24    -196      2 |      17     26
grg   uuuuu |     -18      15      17      26    -14 |      51     53
igr   xxxxx |     -20      -6      -7     -89      0 |       0     18
irf   xxxxx |      28       0     -27      -9      0 |      -4     17
jpl   uuuuu |      34      34     143      65      4 |      34     41
mit   uuuuu |      23      41     -58    -120     -7 |      19     24
ngs   uuuuu |     -61     -64     -66    -117     10 |      10     21
sio   uuuux |      39       0    -119     254    -13 |      65     66

Table 7.1857.5   GPS week: 1857   Day: 5   MJD: 57248.500

                                                         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      -2     -42      69    -10 |      17     23
emr   uuuuu |      75       2     113     326     13 |      50     54
esa   uuuuu |     -16      22     -18     -28      4 |      14     23
gfz   uuuuu |     -21     -11      75    -296      6 |      20     29
grg   uuuuu |      44      15      -3     139      1 |      52     54
igr   xxxxx |      -7      20     -15      28     -5 |       3     19
irf   xxxxx |       3      -9     -32       3      5 |      -2     17
jpl   uuuuu |      20      13     119     118     -4 |      37     44
mit   uuuuu |       5      21     -77    -116      4 |      21     26
ngs   uuuuu |     -48     -49     -85    -285     -3 |      14     25
sio   uuuux |      -3      10     -98     214     -6 |      66     68

Table 7.1857.6   GPS week: 1857   Day: 6   MJD: 57249.500

                                                         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      21      48      24     -7 |      18     23
emr   uuuuu |      67     -20     134     310     17 |      53     56
esa   uuuuu |      -2      21     -66     -36      1 |      16     23
gfz   uuuuu |     -12      -5      86    -209      1 |      24     30
grg   uuuuu |      28       5      43      39    -25 |      53     55
igr   xxxxx |     -24      10     -79     -43      1 |       4     18
irf   xxxxx |      -1      -5     -30     -48      2 |       0     16
jpl   uuuuu |      18     -13     109     166     -9 |      40     45
mit   uuuuu |     -22      21     -52    -221      4 |      22     26
ngs   uuuuu |     -16     -32    -180    -117      7 |      15     25
sio   uuuux |     -11       9     -48     114    -16 |      66     68



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