[IGSREPORT-23192] Wk 1819 IGS Final Orbits

IGS ACC igs.acc at noaa.gov
Fri Dec 5 08:27:33 PST 2014


Author:  AC Coordinator / NOAA NGS

sum-file Version 2.0
Final IGS Orbit Combination - Week 1819   (Nov 16, 2014 - Nov 22, 2014)

Contacts: igs.acc at noaa.gov


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

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

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

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

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

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

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


SOFTWARE:
---------

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

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

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

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

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


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

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

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

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



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

igs1819[0-6].sp3  IGS GPS ephemeris files in SP3 format.
igs1819[0-6].clk  IGS GPS satellite and station clocks in clock RINEX format.
igs1819[0-6].cls  IGS GPS clock combination summary report.
igs18197.erp      Earth Rotation Parameters (ERP) and their rates as well as
                  Universal Time (UT1-UTC) and Length Of Day (LOD) associated 
                  with IGS ephemerides.
igs18197.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   | PIE1
                0  |  ESA   | TIXI
                0  |  GFZ   | 1 2 6 9 30 1 6 30
                0  |  GRG   | BOGT BRFT DAV1 BRFT DARW DAV1
                0  |  JPL   | YELL
                0  |  MIT   | BAKO MDVJ PERT
                1  |  COD   | BRAZ BRST BRAZ BRST PRDS
                1  |  ESA   | BJFS BRMU BJFS BRAZ BRMU
                1  |  GFZ   | 1 2 6 9 30 1 6 30 BRAZ HOB2 HOB2 ISPA
                1  |  GRG   | BOGT BOR1 BRMU GRAZ ISPA BOGT BOR1 BRMU GRAZ ISPA
                1  |  GRG   | SOFI
                1  |  JPL   | 26
                1  |  MIT   | 8 21 29 1 8 21 29 MDVJ PDEL
                2  |  ESA   | ISPA KELY ISPA KELY
                2  |  GFZ   | 1 2 6 9 30 1 6 30 NOVM FAIR NOVM
                2  |  GRG   | CRO1 ISPA ISPA
                2  |  JPL   | 26
                3  |  COD   | ZECK BOR1 ZECK
                3  |  ESA   | BJFS BJFS
                3  |  GFZ   | 1 2 6 9 30 1 6 30
                3  |  GRG   | 26 26 BOR1 GRAZ KELY WSRT GRAZ KELY WSRT
                4  |  COD   | HOB2 HOB2
                4  |  ESA   | BOGT TLSE BOGT TLSE
                4  |  GFZ   | 1 2 6 30 1 6 30 BOR1 CRO1 GRAZ KIRU KOUC MAL2 MAS1
                4  |  GFZ   | PARC SUTH VILL ZECK MAL2 MAS1 ZECK
                4  |  GRG   | 26 26 MAS1 MCM4 VILL WES2 GRAZ MAS1 MCM4 SUTH VILL
                4  |  GRG   | WES2
                4  |  JPL   | INVK SCOR
                4  |  MIT   | 8 8
                5  |  GFZ   | 1 2 6 9 30 1 6 30 HOB2 ONSA HOB2 ONSA
                5  |  GRG   | 26 26 BRST GRAZ KELY KOUC MCM4 ONSA BRST GRAZ KELY
                5  |  GRG   | KOUC MCM4 ONSA
                5  |  JPL   | 26 SCOR
                5  |  MIT   | 8 8 28 HOB2 HOB2
                6  |  ESA   | KOUR KOUR
                6  |  GFZ   | 1 2 3 6 9 30 1 3 6 30 WSRT WSRT
                6  |  GRG   | 13 13 26 BRFT BRST CHUR KOUC MCM4 BRFT BRST KELY
                6  |  GRG   | KOUC
                6  |  MIT   | 8 8 26

    
 5. New clock offsets and drifts were estimated for centres showing reference
    clock resets. Note that only the largest clock offset and drift are output
    to the summary file. However, the clock combination and the listed RMS
    include all the clock segments. In summary, the following clock
    shifts/resets were noticed and accounted for:
    
               Day | Centre |  Time  |  Jump
               ----+--------+--------+-------------
                0  |  GRG   | ~05:40 | ~ 0.22 ns
                4  |  MIT   | ~00:00 | ~ -0.81 ns

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

 7. The following 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
               ----+------------+----------
               G04 | 2014_11_21 | 2014085 
               G04 | 2014_11_22 | 2014085 

 8. 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  |  SIO   | ALL (high Transformation - See Table 2)
                5  |  GRG   |   9
                6  |  ESA   |   3
                6  |  GFZ   |   3
                6  |  GRG   |   9
                6  |  NGS   |   9

 9. 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 G03 |    |    |    |    |    |  4 |  4 |
           PRN G09 |  4 |  4 |  4 |  4 |  4 |  4 |  4 |

10. 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.

11. Small rotations were applied to all the AC orbit and ERP values in order to
    align them to the current IGS reference frame. These RX, RY and RZ rotations
    were estimated in the IGS SINEX combination process, performed by the IGS
    Reference Frame Coordinator at the Institut Geographique National (IGN).
    Starting on 19-Aug-2012 (GPS Week 1702; MJD=56158), ACs began contributing
    products based on 1d SINEX integrations. As a result, the SINEX combinations
    are now done daily instead of weekly, and the associated daily rotations are
    applied here to the orbits and ERPs. The estimated 7 transformations, from
    which only the 3 rotations are applied to the orbit and ERP values, are:
    
            |     |    DX     DY     DZ      RX     RY     RZ     SCL
     Centre | Day |   [mm]   [mm]   [mm]   [uas]  [uas]  [uas]   [ppb]
     -------+-----+---------------------------------------------------
       COD  |   0 |   -1.4     .1   -1.9     -23     -9     33     .69
       EMR  |   0 |   -1.6    4.1   31.7      11     38     13     .69
       ESA  |   0 |     .5    -.6   -1.1       3    -25     29     .59
       GFZ  |   0 |    -.6     .3   -1.8     -12    -83     10     .59
       GRG  |   0 |    2.6    2.1  -20.8     -27     27     -2     .97
       JPL  |   0 |     .8   -6.8   15.7      11      4     28     .76
       MIT  |   0 |    8.1   -3.2    4.7     -18     -2    -47     .96
       NGS  |   0 |   -1.8   -2.6   10.8     -35      3    -32     .97
       SIO  |   0 |   13.3   -1.0   51.2     -48    -22    621     .69

       COD  |   1 |   -1.6     .1   -1.7     -34     -5     13     .52
       EMR  |   1 |   -6.3    5.5   28.1      13     29      4     .50
       ESA  |   1 |     .6    -.3    -.6      -7    -26     39     .43
       GFZ  |   1 |     .3     .3   -1.3     -13    -97     29     .42
       GRG  |   1 |   -1.1     .5  -10.6     -35     -9     -9     .81
       JPL  |   1 |   -3.8   -7.9   16.7     -43     -5     31     .71
       MIT  |   1 |    6.4    -.2    8.6     -13      2    -47     .61
       NGS  |   1 |   -5.4   -4.8    6.5     -37     17    -43    1.08
       SIO  |   1 |   11.8   -3.1   46.3       2    -29     56     .59

       COD  |   2 |   -1.3   -1.0   -1.4     -59      6     29     .34
       EMR  |   2 |    -.8    4.4   32.1      25     37     32     .33
       ESA  |   2 |     .4    -.8   -1.1      -1    -10     42     .32
       GFZ  |   2 |     .5    1.0   -1.9      -5    -78     10     .15
       GRG  |   2 |    3.4    1.3  -13.3     -22      5     -4     .85
       JPL  |   2 |   -2.4    -.8   20.4     -64     13     -9     .56
       MIT  |   2 |   10.3    2.0    4.9      -8     -2    -41     .54
       NGS  |   2 |    3.7    1.8    9.6     -10    -30     14     .76
       SIO  |   2 |    9.7    1.0   37.3       1      3    -11     .57

       COD  |   3 |   -3.0   -1.0   -2.7     -51     31     14     .31
       EMR  |   3 |    2.7    1.4   32.0      27     27     22     .08
       ESA  |   3 |    -.1    -.2   -1.1     -11    -22     37     .37
       GFZ  |   3 |     .2     .6   -2.1     -11    -74     11     .10
       GRG  |   3 |    7.2    1.1  -10.6     -11     28     15     .57
       JPL  |   3 |    6.6   -1.6   19.3     -26     27    -22     .48
       MIT  |   3 |   11.9    -.1    7.7       9      6    -14     .48
       NGS  |   3 |   -2.6   -5.4   16.8     -74     -8    -39     .92
       SIO  |   3 |   10.8     .1   46.0      66     34    176     .63

       COD  |   4 |   -3.1   -2.3   -3.4     -60     49     34     .62
       EMR  |   4 |    2.1    -.5   27.8      23     21     34     .39
       ESA  |   4 |    -.2    -.7    -.1     -14    -29     54     .16
       GFZ  |   4 |     .3    -.9   -2.0     -31    -74      9     .34
       GRG  |   4 |   11.9    2.7  -18.5     -13      1      1     .80
       JPL  |   4 |    -.1   -2.8   12.9     -36     26     20     .71
       MIT  |   4 |   13.5   -2.0    6.7       7      5    -14     .69
       NGS  |   4 |    5.6   -8.3    6.9     -33    -27      0     .57
       SIO  |   4 |    9.5     .7   38.6      -4     19     -1     .72

       COD  |   5 |   -3.3   -3.0   -3.4     -76     52     43     .70
       EMR  |   5 |    3.0   -4.2   20.0      28     24     26     .20
       ESA  |   5 |    -.9    -.4    -.8     -14    -10     37     .26
       GFZ  |   5 |    -.4     .5   -1.7     -38    -63     18     .22
       GRG  |   5 |   11.2   -1.4  -12.3      -6     20     -2    1.06
       JPL  |   5 |    3.5     .3   14.7     -56     22     14     .47
       MIT  |   5 |   11.9   -2.5     .5       4      3    -27     .82
       NGS  |   5 |    5.9   -3.2   11.2     -29    -24     13     .82
       SIO  |   5 |   12.7   -3.3   44.7      38      8    194     .91

       COD  |   6 |   -2.4   -1.2   -2.0     -43     23     33     .31
       EMR  |   6 |   -4.2   -5.3   19.4      25     37     20     .37
       ESA  |   6 |    -.3    -.7     .2      21    -52     69     .33
       GFZ  |   6 |     .7     .6   -1.7     -31    -67      2     .04
       GRG  |   6 |    4.7   10.7  -10.4      -1      0     22     .62
       JPL  |   6 |    7.4    2.1    7.4     -26     18     24     .49
       MIT  |   6 |   12.1     .6   -3.0       3      3    -21     .57
       NGS  |   6 |    3.5    5.2    3.0      21    -18     16     .84
       SIO  |   6 |   11.0   -6.6   52.5      20     33      2     .51


12. 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.

13. 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 1.1819.a). It also displays the computed satellite
position sigmas for the combined orbits (Table 1.1819.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 2.1819.[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 3.1819.[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 5.1819.0-6). 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 1819 summary.                       (Nov 16, 2014 - Nov 22, 2014)

Table 1.1819.a   GPS week: 1819   MJD: 56977.000-56983.000

         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  242|    1     0    -2     4     7    -1   .04    9    9 |    -858    -127     17    115
        |    0     0     1     9    12    19   .03           |     103     170
emr   80|   -2    -2     9   -31   -18     0   .31   13   13 |    2935     248     15    146
        |    1     4     2    17    12    17   .06           |    1351    1151
esa  150|    1     0     1    -1   -14   -10  -.35   12   12 |    -202     -38      9    149
        |    0     0     1    16     9    22   .04           |     743     860
gfz  195|   -1     0     1    12   -18    39  -.15   12   11 |      58    -266     13    159
        |    0     1     1    26    13    15   .05           |     192     415
grg  171|    1     0   -18     5    13   -40   .23   17   16 |      95    -122     15    144
        |    1     0     2    20    22    20   .08           |     246     404
igr  n/a|   -1     0    -4   -10    13   -21  -.21    5    5 |     -96      28     15     82
        |    0     0     0     7    14    10   .02           |    1144    1354
jpl   80|    0     1     8     5    33   -32   .28   12   12 |    2938     266     16    120
        |    1     2     2    16    24    23   .05           |    1362    1144
mit  349|    2     0    -6    11    -2    -7  -.16   13   11 |    -219       6     21    177
        |    0     0     1    28    29    10   .04           |     185     250
ngs  219|   -1     0     0   -10    -4   -16  -.04   12   10 |    -810    -203   1338   2737
        |    1     1     2    22    30    29   .04           |      90      64
sio  324|    0     0     1     6     0   137  -.09   13   12 |     ---     ---    ---    ---
        |    0     0     3    32    29   216   .24           |     ---     ---


Table 1.1819.b   GPS week : 1819   MJD: 56977.000-56983.000   

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

              Day of GPS week
 PRN  |    0    1    2    3    4    5    6 |  Remarks
------+------------------------------------+------------------------------------------
   1  |    4    4    4    4    4    4    4 |
   2  |    4    4    5    4    4    4    4 |
   3  |  ---  ---  ---  ---  ---    0    0 |
   4  |    4    4    4    4    4    0    5 |
   5  |    5    5    4    5    4    5    5 |
   6  |    4    4    4    4    4    4    4 |
   7  |    5    5    5    5    5    4    5 |
   8  |    5    5    5    5    4    4    6 |
   9  |    5    5    7    7    8   10   19 |
  10  |    4    3    4    4    4    4    4 |
  11  |    5    4    4    4    4    4    5 |
  12  |    5    5    5    5    5    5    5 |
  13  |    4    4    4    4    4    4    4 |
  14  |    4    3    3    4    4    3    4 |
  15  |    5    5    4    5    4    5    5 |
  16  |    5    5    5    5    5    5    5 |
  17  |    4    4    4    4    4    4    4 |
  18  |    5    4    5    5    5    5    5 |
  19  |    5    5    5    5    5    5    5 |
  20  |    5    5    4    5    4    5    5 |
  21  |    5    4    4    4    4    4    4 |
  22  |    5    4    5    5    5    4    5 |
  23  |    5    5    5    5    4    5    7 |
  24  |    5    4    4    4    4    5    4 |
  25  |    5    4    4    4    4    4    4 |
  26  |    6    6    7    7    8    7    8 |
  27  |    5    4    4    4    5    5    4 |
  28  |    4    3    4    4    4    4    4 |
  29  |    5    5    5    5    5    5    5 |
  30  |    5    3    4    4    4    4    4 |
  31  |    6    5    5    5    5    5    6 |
  32  |    4    3    3    4    3    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 2.1819.0   GPS week: 1819   Day: 0   MJD: 56977.000                            

CENT STA|   DX    DY    DZ    RX    RY    RZ   SCL  RMS  WRMS|    TOFT   TDRFT   SDEV    RMS
        |  [mm]  [mm]  [mm] [uas] [uas] [uas] [ppb] [mm] [mm]|    [ps]  [ps/d]   [ps]   [ps]
--------+----------------------------------------------------+------------------------------
cod  247|    0     0    -3     0    -9    11   .08    8    8 |    -768    -128     15    121
emr   80|    0     1    12   -49   -33    -4   .29   13   13 |    2383    -492     14    129
esa  150|    1     0     0    -3   -24    -8  -.32   11   12 |   -1544    1502      9    152
gfz  197|   -1     1     3    29   -18    34  -.24   13   12 |    -129    -370     11    146
grg  175|    2    -1   -19   -17    42   -33   .21   18   17 |     214    -355     14    162
igr  n/a|   -1     0    -4   -18    31    -8  -.20    5    5 |     760    -965     15     87
jpl   80|    0    -1     9    36    12    -7   .31   11   11 |    2369    -456     16    122
mit  350|    3    -1    -6   -11    44     1  -.24   15   12 |    -466      68     21    197
ngs  227|   -2     0    -2     6     8    -5  -.10   11   10 |    -748    -141   1732   3363
sio  342|    0    -1    -2   -17    40   583  -.59   14   13 |     ---     ---    ---    ---

Table 2.1819.1   GPS week: 1819   Day: 1   MJD: 56978.000                            

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|    1    -1    -2    -8    20   -23   .02    9    8 |    -884      77     16    104
emr   80|   -4     2    10   -40     2   -20   .36   13   13 |    2285    -941     13    126
esa  150|    1     0     2   -20   -17   -16  -.32   12   12 |    -189    -312     10    146
gfz  201|    0     0     2    -1   -23    52  -.18   11   10 |     242    -244     13    170
grg  171|    1     0   -15     4     2   -57   .29   16   14 |     366    -486     14    135
igr  n/a|    0     0    -5    -7    12   -26  -.19    5    5 |     188   -1432     16     71
jpl   80|   -2    -1     9     1    29   -30   .32   11   11 |    2281    -944     17     96
mit  350|    1     0    -7    33   -23    -6  -.17   13   10 |      97    -301     21    175
ngs  227|   -2     0    -1     9    17     5  -.06   12   10 |    -655    -232   1109   2260
sio  327|    1     0    -2    41   -30    88  -.12   12   11 |     ---     ---    ---    ---

Table 2.1819.2   GPS week: 1819   Day: 2   MJD: 56979.000                            

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  245|    1    -1    -4     5    24    28   .01    9    8 |    -818    -191     15    109
emr   80|   -3     1    10     3   -18     8   .38   13   13 |    1785    -815     16    148
esa  150|    0     0     0    24    -9    -4  -.34   12   12 |    -137    -562      9    157
gfz  201|   -1    -2     1    65   -13    52  -.12   12   11 |     -46    -139     14    169
grg  173|    1    -1   -17    44   -11   -15   .32   17   15 |      52    -239     15    142
igr  n/a|    0     0    -4   -10    16   -16  -.20    5    5 |   -1033   -1290     16     80
jpl   80|   -1     1    10    -1    31   -59   .30   12   12 |    1784    -777     16    113
mit  350|    2     0    -5   -31   -14    -8  -.17   12    9 |    -309     -50     19    164
ngs  227|    0     1     0   -29     6    -1  -.02   12   10 |    -858    -157   1121   2324
sio  329|    1    -1     1   -47   -15   -29  -.10   11   11 |     ---     ---    ---    ---

Table 2.1819.3   GPS week: 1819   Day: 3   MJD: 56980.000                            

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  241|    1     0    -4     8    -5   -12   .04   10   10 |    -834    -158     20    121
emr   80|   -2    -1    11   -39   -28     3   .35   13   13 |    1963    1148     14    128
esa  150|    0     1     1    -2   -28   -43  -.32   11   12 |    -487     451     11    154
gfz  197|   -1    -1     0     6   -42    16  -.10   12   11 |     -18    -558     13    161
grg  173|    1     0   -20    -5    36   -64   .30   17   16 |     -99      98     16    140
igr  n/a|   -2     0    -4   -21    12   -36  -.21    5    5 |   -1462     785     17     76
jpl   80|    0     1    10    -9     0   -33   .31   13   13 |    1950    1193     16    121
mit  350|    2     0    -6    -4    17   -29  -.15   12   10 |    -156    -311     22    164
ngs  214|   -3     0     4   -14    25    -9  -.03   13   11 |    -830    -156   1534   3061
sio  321|    0     0    -1    42    41   132  -.07   11   12 |     ---     ---    ---    ---

Table 2.1819.4   GPS week: 1819   Day: 4   MJD: 56981.000                            

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    -3    10     8     3   .06    9    8 |   -1077     124     18    114
emr   80|   -2    -3     9   -29   -29    15   .35   13   13 |    3008     965     16    174
esa  150|    0     0     2     9   -13     4  -.36   11   11 |    -188     171      8    151
gfz  192|   -1     0     1    -1    -6    40  -.14   13   12 |    -155     378     12    152
grg  171|    3    -1   -21     6    26   -53   .22   18   17 |     176    -280     16    144
igr  n/a|   -1     0    -2   -10     0   -19  -.19    6    5 |    -530     370     16     89
jpl   80|    1     2     9    -1    53   -53   .30   12   12 |    3016     977     16    126
mit  349|    2     0    -4    46     3     1  -.13   12   10 |     -98      55     22    172
ngs  219|   -1     0     0   -44   -35    -7  -.04   13   10 |    -925    -194   1140   2760
sio  323|    0     0     1    -3     4    26   .02   12   11 |     ---     ---    ---    ---

Table 2.1819.5   GPS week: 1819   Day: 5   MJD: 56982.000                            

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     0     0    18     0   -24   .01    9    9 |    -839    -294     21    128
emr   80|    0    -5     6   -28    -8   -25   .24   13   13 |    3409    2077     16    168
esa  150|    1     0     1     7    -4   -30  -.40   13   13 |     204    -317      9    129
gfz  195|   -2     0     0    -1   -23    24  -.09   12   12 |     183      -3     13    158
grg  169|    2     0   -14    -6   -12   -47   .13   17   16 |    -339     701     16    125
igr  n/a|   -1     0    -5    -6    -7   -30  -.22    5    5 |    -490    2336     15     86
jpl   80|    0     2     5    -9    32   -45   .24   12   12 |    3434    2060     18    126
mit  350|    1     0    -6    22     0    -9  -.15   14   11 |    -352     361     22    193
ngs  215|    0     0     1   -21     5   -11  -.01   12    9 |    -878    -218   1250   2745
sio  320|    1     0     4    22   -26   205   .09   13   12 |     ---     ---    ---    ---

Table 2.1819.6   GPS week: 1819   Day: 6   MJD: 56983.000                            

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|    2     0    -1    -5    12     9   .07   10   10 |    -791    -320     20    114
emr   80|   -4    -9     7   -39   -15    20   .23   14   14 |    5717    -200     17    152
esa  150|    1     0     2   -21    -4    26  -.40   12   12 |     921   -1205     13    154
gfz  182|   -3     1     0    -9     0    54  -.15   13   12 |     332    -928     15    163
grg  169|    0    -1   -16    14     8   -11   .12   18   18 |     298    -297     17    161
igr  n/a|   -1     1    -4     2    27   -11  -.24    6    6 |    1893     396     16     87
jpl   80|    2     4     5    20    72     4   .20   13   13 |    5735    -185     18    142
mit  350|    1     1    -7    27   -46    -4  -.11   15   12 |    -249     223     23    175
ngs  207|    0     3    -3    17   -57   -81   .01   14   12 |    -776    -327   1480   2651
sio  306|    0    -1     8     9   -11   -46   .12   14   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 3.1819.0   GPS week: 1819   Day: 0   MJD: 56977.000                            

        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   12   13   12   15    4   11   11   11   12    4 |    54   56   47   52   67   53   58   58   50   54    53
   2  |    8   13    9   10   14    5    9   11    9   15    4 |    27   27   26   25   33   24   25   28   24   27    25
   4  |    7    6   11   17   12    4    7   11   11   11    4 |    27   23   21   28   24   28   21   22   23   22    27
   5  |    7   12   13   15   19    4   11   12   10   15    4 |    37   47   41   38   41   38   49   33   39   33    39
   6  |    8   11   13   15   16    6   11   10    9   10    4 |    55   61   52   54   70   54   58   57   54   54    56
   7  |    8    9   12   12   20    4    8   27   11   11    5 |    23   31   19   26   30   20   27   26   22   16    21
  X8  |   10   12   12   13  ---    9   10   10   18  ---    5 |    28   34   31   31  ---   29   31   27   29  ---    29
   9E |   10   14   14   12   18    5   12   19   10   19    5 |   301  295  302  298  304  300   25  304  297  305   299
  10  |    6   10   12   13   14    5    9   10    8   14    3 |    18   24   20   14   22   16   23   17   15   18    17
  11  |    8   11   16   10   18    4    9   11   11   15    4 |    48   52   46   50   66   49   52   54   47   51    49
  12E |   11   19    8   13   17    6   14   16    8   16    5 |    62   63   59   64   66   60   63   65   61   59    62
  13E |    7    9    9   14   19    4    8    8    6   10    3 |    25   29   24   23   31   22   27   22   23   23    24
  14E |    6    9    6   12   20    4   10   14    9   14    4 |    26   26   21   25   33   22   23   21   23   16    23
  15E |    7   14    8   14   21    5   14   17   17   18    5 |    31   31   28   34   26   28   32   30   33   22    29
  16E |    8   17    7   18   19    5   13   14   14   13    5 |    27   36   27   35   33   27   30   25   29   24    28
  17  |    7   11   12    9   17    5   11   13    9   16    4 |    32   33   26   28   43   30   30   30   31   24    29
  18  |    9   12   10   14   16    5   13   18   12   17    5 |    24   26   22   26   32   21   26   23   19   15    21
  19  |    9   16   12   12   23    4   12   12   16   15    5 |    26   35   26   31   40   28   30   30   31   28    28
  20  |   11   11   11   11   20    5   11   14   10   14    4 |    23   31   24   26   33   24   30   30   24   22    24
  21  |    9   11   10   12   13    7   11   18   11   17    4 |    26   23   25   23   32   23   21   29   19   24    23
  22  |    7   11   11   15   16    4   12   13   14   16    4 |    29   29   28   33   40   27   28   30   25   24    27
  23E |    6   13    7   16   23    6   10   13   12   13    4 |    25   33   23   30   33   25   30   28   29   23    27
  24  |    9   13   14   10   21    7   10   12   13   19    4 |    23   27   27   23   27   24   28   20   23   13    23
  25  |   10   13   14   11   20    5   11   13   10   10    4 |    28   29   31   22   34   24   29   19   22   18    25
  26E |   12   18   13   16   17    6   15   21   14   12    5 |    68   68   69   70   63   69   66   58   69   64    66
  27  |   10   10   16   15   20    5   11   11   12   10    5 |    26   32   31   28   28   25   29   27   24   22    26
  28E |    9   10    7   10   17    5    7   13    7    9    3 |    37   37   30   34   38   31   36   35   30   29    33
  29  |    9   15   11   16   20    8   15   15   13   14    5 |    24   35   24   19   29   21   32   16   23   18    23
  30  |    8   12   12    9   15    5   19    9   10   10    4 |    22   31   25   19   30   21   33   19   22   14    23
  31  |    8   16   11   13   19    7   13   23   13   14    5 |    29   38   23   28   36   22   36   21   29   18    26
  32  |    6    8   13    9   18    6    8    9   11    9    3 |    22   29   25   21   19   21   28   19   24   18    22
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |    8   12   11   13   18    5   11   15   11   14      |T   40   44   39   40   46   38   34   39   39   36    39
 WRMS |    8   12   12   12   17    5   11   12   10   13      |NE  26   31   26   25   33   24   30   23   24   19    25
 MEDI |    8   12   12   13   18    5   11   13   11   14      |MD  27   32   26   28   33   25   30   28   25   23    27

Table 3.1819.1   GPS week: 1819   Day: 1   MJD: 56978.000                            

        Weighted Average                                            Orbit Dynamics (7 days)
 PRN  |  cod  emr  esa  gfz  grg  igr  jpl  mit  ngs  sio  IGS |   cod  emr  esa  gfz  grg  igr  jpl  mit  ngs  sio   IGS
------+--------------------------------------------------------+---------------------------------------------------------
   1  |    6    9   11   10   13    5   10   11    8   10    3 |    36   42   30   30   45   32   41   36   34   37    35
   2  |    6   12   10   11   10    5    9    8   10   14    3 |    18   21   20   24   20   19   21   19   17   21    18
   4  |    8    7   11   16   10    5    8   16   15   11    4 |    22   23   20   19   18   20   21   18   26   17    19
   5  |    7   14   16   11   18    6   12    9   17   12    4 |    28   41   33   30   37   31   39   27   36   29    31
   6  |    5   11   13    8   12    5   11    8    9    9    3 |    34   42   31   34   46   33   40   34   29   33    34
   7  |   10    8   12    9   16    5   10   24    9   13    4 |    24   29   19   24   27   18   25   22   23   15    19
  X8  |   10   12   13   13  ---    6   10   10   13  ---    4 |    37   41   37   38  ---   40   39   37   41  ---    37
   9E |    9   12   16   11   20    6   11   16   11    8    4 |   274  273  278  273  276  275   19  275  275  275   274
  10  |    5   10   12   11   11    5    8    8    6   10    3 |    14   21   18   17   18   14   18   14   13   18    15
  11  |    7    8   17    8   13    6    7   11   10   16    4 |    30   37   29   29   42   30   36   33   34   38    32
  12E |   12   17    9   11   15    7   14   17   11   14    4 |    82   82   76   79   78   76   84   77   81   82    79
  13E |    6   13   10   12   16    4   10    8    8    9    3 |    32   40   31   32   38   30   33   29   34   29    32
  14E |    8   11    7    8   13    5   10   10    9    8    3 |    23   24   19   24   25   21   22   22   23   23    22
  15E |    7   17   10   13   18    5   13   10   14   14    4 |    30   33   27   34   27   27   32   32   34   31    30
  16E |   12   17   10   17   24    6   12   12   18   11    5 |    38   41   35   41   43   35   39   38   39   36    37
  17  |    7   12   12   10   15    4   12    8   11   11    3 |    23   25   19   22   30   20   24   23   24   19    21
  18  |    8   14   14   12   14    4   13   11    8   14    4 |    22   28   20   24   25   20   28   18   18   17    20
  19  |    9   14   13   10   16    6   13   12   14   14    4 |    19   30   20   21   26   19   24   22   22   16    19
  20  |   11   13   11   10   19    4   13   12   12   16    4 |    24   28   25   22   34   21   29   28   21   19    22
  21  |    8   12   10    7   12    4   10   13   12   12    3 |    18   21   19   17   23   17   20   20   16   18    17
  22  |    7   12   12   11   13    3   11   10   14   15    4 |    22   28   22   26   30   21   27   23   20   21    21
  23E |    7   11   10   17   22    4    9   12   13   12    4 |    20   27   17   26   25   18   26   25   24   28    21
  24  |   10   10   18    8   12    6   10    8   11   13    4 |    20   29   29   22   26   21   27   21   26   20    22
  25  |    8   13   16   10   12    6   12   10    9    9    4 |    23   28   32   23   26   23   26   20   25   21    23
  26E |   15   20   10   14   15    9   15   19   21   14    5 |    56   57   52   60   49   54   53   41   56   45    51
  27  |   10   10   16   13   15    5   11    8   17    8    4 |    27   31   29   26   27   23   29   27   26   29    26
  28E |    6   10    8    9   13    5   10   12    8    7    3 |    41   45   39   41   42   39   40   38   39   39    40
  29  |    9   16   13   12   13    7   15   13   12   10    4 |    23   27   20   21   24   18   27   17   21   19    19
  30  |    5   12   12    7   10    4    9    7    8    6    3 |    19   26   20   17   24   17   24   16   19   16    18
  31  |   11   14   12   16   20    8   11   24   13   12    5 |    27   35   23   28   32   22   31   24   26   24    24
  32  |    9    6   12    7   19    4    6    7    8    7    3 |    19   23   19   15   19   15   22   14   16   13    16
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |    9   13   12   11   16    5   11   13   12   12      |T   36   41   35   36   40   34   31   35   36   34    35
 WRMS |    8   13   12   10   14    5   11   10   10   11      |NE  23   29   24   24   26   21   27   21   23   20    22
 MEDI |    8   12   12   11   14    5   11   11   11   11      |MD  24   29   25   26   27   21   27   24   26   21    22

Table 3.1819.2   GPS week: 1819   Day: 2   MJD: 56979.000                            

        Weighted Average                                            Orbit Dynamics (7 days)
 PRN  |  cod  emr  esa  gfz  grg  igr  jpl  mit  ngs  sio  IGS |   cod  emr  esa  gfz  grg  igr  jpl  mit  ngs  sio   IGS
------+--------------------------------------------------------+---------------------------------------------------------
   1  |    7   10   10   11   13    5   12   10   11   12    3 |    43   46   40   40   54   42   45   43   41   41    41
  X2  |   11   13   13   13   13    5  ---    8   10   11    4 |    16   19   22   28   25   19  ---   24   23   22    19
   4  |    7    7    9   14   11    4    7   13   12   11    3 |    23   19   18   20   23   20   18   19   17   19    21
   5  |    8   11   15   11   17    3   12    8   13    9    4 |    31   34   29   26   32   24   37   24   33   26    27
   6  |    6   11   12    9   12    5   13    7   10    9    3 |    42   46   41   44   54   40   45   43   43   41    42
   7  |    8    9   14   12   14    5   11   21   12   10    4 |    24   25   19   22   26   16   26   17   23   13    17
  X8  |   11   12   12   14  ---   12    9    9   11  ---    4 |    27   25   22   23  ---   27   25   23   26  ---    22
  X9E |   11   21   17   15   31    8  ---   13   24   11    6 |   329  325  331  327  327  325  ---  328  319  328   327
  10  |    8   10   13   12   14    5    9    8    6   12    3 |    18   21   19   22   21   13   19   15   15   21    16
  11  |   10    8   15   10   16    4   10   11   10   14    4 |    38   43   38   37   51   37   40   39   31   41    37
  12  |    9   18    9   13   27    5   17   12   12   13    5 |    55   59   52   61   64   56   57   58   62   54    56
  13E |    6   11    9   12   16    5   13    7    9   10    3 |    27   30   23   26   36   23   30   23   24   25    24
  14E |    7   12    7   10   13    5   10    8    9    7    3 |    33   27   29   33   33   27   32   29   30   26    28
  15E |    8   15    9   11   19    5   13   12   12   11    4 |    30   29   28   33   29   27   30   31   32   29    29
  16E |   12   18   11   16   21    9   11   11   14   11    5 |    59   56   55   56   55   49   55   59   53   59    55
  17  |    6   12   11    8   16    5   14   10   11   12    3 |    24   26   22   26   34   21   27   24   23   19    22
  18  |    8   15   13   15   18    5   14   12   12   13    4 |    20   24   19   24   30   16   25   18   19   15    17
  19  |    9   19   11   12   21    5   13   12   12   14    4 |    25   30   23   25   32   20   26   23   23   20    21
  20  |   10   11   12    9   17    4   13   11   12   12    4 |    28   31   26   27   35   25   30   26   27   18    25
  21  |    8   14   12   12   11    6   10   10   13   11    4 |    20   19   23   19   24   17   23   24   19   21    18
  22  |    9   13   13   17   17    4   13   10   11   13    4 |    27   26   23   32   38   22   27   23   18   20    22
  23E |    6   15    8   16   27    5   11   15   14    9    4 |    28   30   21   29   29   21   27   31   30   30    25
  24  |   10   11   15    6   13    4   10   10   10   12    3 |    20   27   25   21   26   18   25   19   23   15    19
  25  |    6   11   14   11   11    4   11    9    9    6    3 |    22   23   28   19   23   17   23   18   20   19    19
  26E |   21   22   13   12   17    8   18   20   23   13    6 |    56   54   50   55   49   52   53   39   55   43    49
  27  |   11   10   12   12   20    4   11    9   10    9    4 |    27   31   28   24   29   23   29   26   27   30    26
  28E |    9    9    9    9   14    8   10   12    8    8    3 |    57   57   56   57   56   54   58   57   61   57    56
  29  |    8   15   12   13   14    8   15   13   13   13    4 |    23   25   18   21   26   17   27   14   25   22    18
  30  |    7   12   13    7   10    3   10    7   13    6    3 |    19   24   23   19   23   17   26   15   22   15    18
  31  |    8   15   14   14   20    5   12   22   15    9    5 |    25   32   23   29   34   20   30   20   23   21    21
  32  |    9    7   10    9   16    4    8    6    9    8    3 |    23   25   23   21   22   19   26   17   23   18    20
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |    9   13   12   12   17    5   12   12   12   11      |T   39   41   38   40   44   36   32   37   39   37    37
 WRMS |    8   13   12   11   15    5   12    9   10   11      |NE  22   25   22   24   28   19   26   19   22   19    19
 MEDI |    8   12   12   12   16    5   11   10   12   11      |MD  27   29   23   26   32   22   27   24   25   22    22

Table 3.1819.3   GPS week: 1819   Day: 3   MJD: 56980.000                            

        Weighted Average                                            Orbit Dynamics (7 days)
 PRN  |  cod  emr  esa  gfz  grg  igr  jpl  mit  ngs  sio  IGS |   cod  emr  esa  gfz  grg  igr  jpl  mit  ngs  sio   IGS
------+--------------------------------------------------------+---------------------------------------------------------
   1  |    7   12   10   16   14    4   13   11    9   12    4 |    48   48   44   43   58   44   49   47   42   47    45
   2  |   10   10   10   13   14    5    9    9   13   13    4 |    25   24   23   28   31   24   25   27   25   25    24
   4  |    9    8   10   18   14    5   10   10   13   13    4 |    22   21   18   21   19   19   19   17   20   18    20
   5  |    9   11   16   11   19    5   13    8   14   11    4 |    34   40   32   28   31   28   39   26   29   29    30
   6  |    7   10   13    9   12    5   11    8   13   11    3 |    47   51   42   45   58   45   49   50   44   51    47
   7  |    9   10   13    8   17    4   12   21   11   10    4 |    26   29   20   22   28   18   28   20   25   17    20
  X8  |   10   13   11   16  ---   11   14    8   14  ---    5 |    42   39   37   41  ---   41   39   37   45  ---    38
  X9E |   12   21   19    9   27   12  ---   12   31   15    7 |   373  373  377  373  372  366  ---  375  361  377   373
  10  |    8    8   12   10   15    5    8    8    8   10    3 |    21   24   20   18   25   17   21   18   16   20    18
  11  |    8    9   14   13   17    4   10   11    9   12    4 |    40   44   40   39   55   39   43   42   35   44    40
  12  |   10   18    8   12   21    5   16   15   15   15    5 |    38   44   35   44   45   37   43   41   40   36    38
  13E |    6   11    9   10   16    5   12    8   13    6    3 |    25   29   20   20   32   20   28   21   23   24    22
  14E |    8   11    6   11   13    5   11   12    8    7    3 |    27   25   23   27   27   25   25   28   23   28    24
  15E |    7   14    9   11   24    6   14   11   13   10    4 |    30   29   24   29   23   26   29   28   31   29    26
  16  |   13   16    7   12   22    5   13   13   11   12    4 |    55   60   56   58   57   55   57   57   61   58    56
  17  |    8   10   12   10   17    6   13   10   16   10    4 |    26   26   19   20   34   18   24   24   29   22    21
  18  |    9   13   12   14   17    7   16   12   13   17    4 |    25   26   21   30   31   22   25   23   25   18    21
  19  |    8   16   11   10   18    4   17   10   13   12    4 |    23   32   22   22   32   21   28   26   21   27    22
  20  |   14   14   12   12   16    4   14   11   12   14    4 |    29   32   26   27   37   25   32   29   28   25    26
  21  |    8   12   12    7   16    6    9   15   12   13    4 |    25   20   23   21   31   21   21   25   18   23    20
  22  |    8   14   12   14   16    4   14   12   16   14    4 |    30   30   27   32   38   26   30   29   30   25    27
  23E |   10   14    8   14   27    5   12   15   12   10    4 |    28   30   23   30   28   23   28   34   28   33    27
  24  |   10   11   14    7   13    5   10   11   13   14    4 |    22   26   23   18   24   17   23   17   21   13    18
  25  |    9   17   13    8   14    4   12    9   10    8    4 |    22   27   27   19   23   20   25   18   22   19    20
  26E |   19   23   11   16   18    9   17   20   26   14    6 |    49   49   44   46   41   45   47   32   50   39    41
  27  |   12   14   12   12   18    5   13    9   15    6    4 |    33   36   33   28   26   26   28   27   32   28    28
  28  |   11   10   10    9   14    9   10   11    6   10    3 |    67   68   60   66   63   60   68   64   66   65    65
  29  |   11   15   11   10   18    7   16   15   14   13    4 |    27   32   25   20   25   19   30   18   25   23    21
  30  |    6   11   13    8   13    5   14    9   10    6    3 |    22   25   22   18   25   17   26   16   21   19    19
  31  |    9   14   12   13   22    5   12   21   10    9    4 |    26   34   22   26   36   23   31   23   29   24    23
  32  |   18    9   11   10   18    4    9    6    9    9    4 |    23   28   24   20   19   17   27   18   28   21    20
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |   10   13   11   12   17    5   13   12   13   11      |T   42   45   40   41   45   38   32   40   41   40    40
 WRMS |   10   13   12   11   16    5   13   10   11   12      |NE  26   29   24   24   29   22   28   22   26   21    23
 MEDI |    9   12   12   11   17    5   12   11   13   11      |MD  27   30   24   28   31   24   28   27   28   25    24

Table 3.1819.4   GPS week: 1819   Day: 4   MJD: 56981.000                            

        Weighted Average                                            Orbit Dynamics (7 days)
 PRN  |  cod  emr  esa  gfz  grg  igr  jpl  mit  ngs  sio  IGS |   cod  emr  esa  gfz  grg  igr  jpl  mit  ngs  sio   IGS
------+--------------------------------------------------------+---------------------------------------------------------
   1  |    5   13    9   16   14    5   12   12   12   13    4 |    41   44   38   39   53   38   44   41   42   41    40
   2  |    7   13   11   14   15    6    9    9   12   14    4 |    20   21   18   25   23   21   19   22   26   21    20
   4  |    8    9   10   21   16    4    8   10   16   11    4 |    23   20   20   24   26   20   22   20   23   16    19
   5  |    7   10   16   12   19    6   11   10    8   11    4 |    32   37   31   26   32   27   35   25   33   27    29
   6  |    7   11   14    8   14    6   10    9   15    7    3 |    39   45   36   39   54   37   42   42   45   39    40
   7  |   11   10   13   10   19    4   12   23   10   11    4 |    25   28   19   18   27   18   24   21   21   17    18
  X8  |    9   12   10   12  ---    6   11    6   13  ---    4 |    21   22   19   14  ---   17   20   17   20  ---    18
  X9E |   11   21   18   13   45    8  ---   22   11   13    7 |   592  592  593  593  589  595  ---  598  594  595   592
  10  |   10   10   12   11   17    5    8    9    7    9    3 |    24   22   16   13   26   15   19   19   19   21    18
  11  |    7   10   14   14   17    5   10   11   15   13    4 |    40   42   37   37   49   35   39   38   37   41    38
  12  |   10   16   10   11   22    6   14   11   11   13    4 |    35   38   30   38   39   33   37   34   35   33    33
  13E |    7   10    8   16   20    4   12   11    9    8    4 |    23   28   18   17   31   19   25   20   23   25    20
  14E |    8   12    7   13   16    6   10    8    9    7    3 |    21   22   17   24   28   18   19   20   22   23    19
  15E |    8   15    7   12   23    6   13   10    9   11    4 |    31   30   23   30   25   25   29   29   33   31    28
  16  |    8   24    9   13   20    4   16   15   12   15    5 |    37   44   36   39   42   36   42   41   39   35    37
  17  |    8   10   10   11   20    6   13    9   13    9    4 |    21   25   17   20   31   16   22   19   21   18    18
  18  |    8   14   12   16   14    6   13   12    9   21    4 |    22   29   20   24   29   19   24   21   19   23    20
  19  |   10   16   10   12   20    5   17   11   11   11    4 |    23   34   22   22   34   20   27   26   23   21    22
  20  |   11   13   12   10   16    4   15   11   11   12    4 |    28   33   27   25   38   26   31   28   29   27    26
  21  |    8   13   12    8   13    5    9   11   11   18    4 |    21   21   20   17   27   17   18   22   14   26    18
  22  |    9   17   12   14   16    7   13   10   10   21    4 |    28   31   27   29   38   23   29   28   24   30    26
  23E |    8   12    7   11   22    5   12   15   11   10    4 |    27   32   19   23   25   20   25   34   25   30    25
  24  |    7   10   13    8   15    7   12    7    8   16    3 |    21   27   23   18   25   17   23   19   21   14    19
  25  |    6   13   14    8   14    5   11    9    9    7    3 |    19   27   26   21   25   19   22   17   21   19    20
  26E |   25   19   15   17   19   12   17   20   33   14    7 |    52   53   48   50   48   48   48   37   55   42    45
  27  |   14   15   11   11   14    7   10   15    9   14    4 |    27   33   31   25   29   25   32   30   23   32    27
  28  |    7   10    8    9   22    6   11   10    9    8    3 |    40   42   35   38   45   36   37   37   39   35    37
  29  |    8   16   12   13   14    5   16   15   10    9    4 |    24   31   24   21   24   20   29   20   24   22    21
  30  |    8   10   12   18   13    4   11   10    9    7    4 |    24   27   24   19   27   19   23   17   18   22    20
  31  |    8   14   11   14   23    4   11   21   20   13    5 |    23   31   19   26   34   19   28   18   25   20    20
  32  |    7    9   10    8   19    4    7    6    9   10    3 |    17   25   19   15   23   15   22   15   20   17    17
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |    9   13   11   13   18    6   12   12   13   12      |T   45   49   43   44   51   42   28   44   45   45    43
 WRMS |    8   13   11   12   17    5   12   10   10   11      |NE  23   27   21   21   28   19   24   20   22   21    20
 MEDI |    8   13   11   12   17    5   11   11   11   11      |MD  24   31   23   24   29   20   25   22   24   25    21

Table 3.1819.5   GPS week: 1819   Day: 5   MJD: 56982.000                            

        Weighted Average                                            Orbit Dynamics (7 days)
 PRN  |  cod  emr  esa  gfz  grg  igr  jpl  mit  ngs  sio  IGS |   cod  emr  esa  gfz  grg  igr  jpl  mit  ngs  sio   IGS
------+--------------------------------------------------------+---------------------------------------------------------
   1  |    7   12   13   16   14    6   10   11   13   11    4 |    32   40   25   32   40   32   42   34   35   33    33
   2  |    8   10   13   15   13    5    8   12   10   17    4 |    16   20   15   25   14   16   16   19   15   18    15
  X3  |    1  ---  ---  ---  ---  ---  ---  ---  ---  ---    0 |  9999  ---  ---  ---  ---  ---  ---  ---  ---  ---  9999
  X4  |    1  ---  ---  ---  ---   50  ---  ---  ---  ---    0 |    79  ---  ---  ---  ---   13  ---  ---  ---  ---    76
   5  |    8   11   17   14   17    5   12   10   10   17    4 |    28   35   30   27   29   24   32   22   30   32    27
   6  |    6   14   13    9   11    5   10   11   15   12    4 |    33   43   28   34   40   31   37   36   25   32    32
   7  |    8   14   13    8   16    3    9   17    9    9    4 |    27   29   21   24   27   19   25   19   23   25    22
  X8  |   10   11   11   14  ---    6    9    8    9  ---    4 |    39   37   35   35  ---   37   36   37   39  ---    35
  X9E |   18   29   27   22   95    8  ---   20   34   22   10 |   672  671  671  672  666  671  ---  671  664  673   670
  10  |    9   10   12   11   16    4    6   10    8   13    3 |    19   26   19   18   21   14   20   16   16   25    17
  11  |    9   10   16   15   17    5    9    9   13   11    4 |    28   37   29   28   39   28   38   30   33   33    30
  12  |    9   16   10   12   20    5   14   13    9   14    4 |    37   39   31   40   44   36   40   37   39   39    36
  13E |    7   10    9    9   13    4   13   14    8   11    3 |    25   30   21   23   29   19   25   21   20   31    22
  14E |    6   11    7   11   13    6   10    9    8    8    3 |    21   22   18   23   21   17   23   18   20   19    19
  15E |    8   13   11   12   22    5   14   13   13   16    4 |    27   27   21   28   23   22   26   26   27   34    25
  16  |   10   22    9   15   21    4   14   15   12   17    5 |    26   27   20   26   29   22   27   29   27   29    23
  17  |    8   12   12    9   16    4   14   12   15   11    4 |    23   26   15   21   26   15   22   18   26   18    18
  18  |    9   11   13   13   12    4   13   13    9   19    4 |    23   28   21   29   26   20   28   21   24   24    22
  19  |    9   17   12   14   20    4   13   13    9   14    4 |    20   29   19   23   27   18   25   26   21   20    20
  20  |   11   13   13   13   17    5   15   14   12   16    4 |    27   34   27   27   34   26   36   30   27   24    26
  21  |    8    8   10   11   12    5    9   10    8   11    3 |    21   23   19   21   21   17   19   20   17   22    18
  22  |    8   12   13   14   14    5   11   11   11   16    4 |    28   32   26   33   36   25   33   28   29   27    27
  23E |    8   15   10   11   21    7   12   26   14   14    5 |    29   29   19   28   21   22   27   47   28   38    27
  24  |   10   10   15    6   15    5   10   16   16   19    4 |    19   26   24   19   24   18   23   22   27   21    19
  25  |    8   16   16   10   14    6   11    8    8    6    4 |    22   26   29   23   25   21   25   17   24   20    21
  26E |   20   20   16   16   21    8   15   21   30   16    7 |    51   49   45   51   48   46   46   33   52   37    43
  27  |    9   11   17   16   15    3   12   21   11   13    5 |    28   28   34   22   27   23   27   37   28   34    26
  28  |    7   11    9    9   20    4   10   11   10   11    3 |    28   31   22   28   35   25   30   26   27   26    26
  29  |   10   16   13   12   14    6   16   14   11   15    4 |    24   28   22   23   25   20   28   16   25   23    21
  30  |    5    9   14    9   12    4    8   12    7    9    3 |    22   24   24   15   23   16   23   17   19   22    19
  31  |    9   13   11   14   20    5   10   23    7   13    4 |    23   30   20   30   34   20   28   19   24   21    21
  32  |    9    9   13   11   16    3    7    9    7    8    3 |    22   26   24   19   21   17   26   18   20   17    19
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |    9   13   13   12   17    5   12   14   12   13      |T   49   51   45   48   50   43   28   47   47   48    46
 WRMS |    9   13   13   12   16    5   12   11    9   12      |NE  24   28   23   24   25   20   26   20   24   23    21
 MEDI |    8   12   13   12   16    5   11   12   10   13      |MD  27   29   22   26   27   21   27   22   26   25    23

Table 3.1819.6   GPS week: 1819   Day: 6   MJD: 56983.000                            

        Weighted Average                                            Orbit Dynamics (7 days)
 PRN  |  cod  emr  esa  gfz  grg  igr  jpl  mit  ngs  sio  IGS |   cod  emr  esa  gfz  grg  igr  jpl  mit  ngs  sio   IGS
------+--------------------------------------------------------+---------------------------------------------------------
   1M |    6   14   11   15   13    4   10   12   15   12    4 |    55   55   47   48   65   50   56   56   48   52    52
   2  |    9   11   12   11   13    6    9    8   12   14    4 |    26   23   22   27   27   20   20   26   21   22    22
  X3  |    2  ---  258  193  ---   79  ---  ---  ---  ---    0 |  9999  --- 9999 9999  --- 9999  ---  ---  ---  ---  9999
  X4M |    7   11   12   18  ---    5    8   13  ---   11    5 |    23   12    8    7  ---    7   10    4  ---    4    23
   5  |   10   13   16   15   15    5   14   11   12   15    4 |    34   42   35   30   31   29   39   30   36   35    32
   6M |   10   14   11    7   11    7   10   10   13   13    4 |    56   60   50   51   65   49   54   57   48   52    53
   7  |   11   16   12    8   19    6   13   19   10   14    4 |    28   30   21   22   29   20   26   22   26   28    22
  X8  |   16   13   14   18  ---   14   11    9   18  ---    6 |    32   28   29   27  ---   31   30   26   34  ---    28
  X9E |   29   55   35   52  118   14  ---   46   79   42   19 |   863  865  875  873  870  870  ---  881  877  883   871
  10  |   10   13   13   10   13    6    9   10   10   13    4 |    20   33   24   21   26   18   22   22   21   31    21
  11M |    9   16   15   15   17    5   10   13   17   13    5 |    46   51   47   45   62   47   50   53   44   48    47
  12  |   10   15    9   11   16    6   14   13   11   14    4 |    43   45   39   47   47   41   47   43   44   43    43
  13E |   10    9    7   10   14    5   14   14   10   16    4 |    25   32   24   24   31   22   28   23   25   39    25
  14E |    5   11    7   15   15    6   12    9   10    6    3 |    23   21   20   26   24   21   25   19   25   23    21
  15E |    8   17    9   12   20    6   15   10   16   14    4 |    32   29   26   31   23   25   28   27   32   33    27
  16  |    9   21    9   16   22    6   14   12   11   17    5 |    41   46   38   44   40   38   41   42   42   40    39
  17  |   10   12   10   10   19    5   13   10   10   11    4 |    26   29   20   23   33   18   24   22   22   21    21
  18  |    9   15   14   19   16    7   14   14   13   20    5 |    24   27   23   37   34   23   28   26   27   28    24
  19M |   11   15   10   12   22    6   13   19   14   14    5 |    33   43   37   37   44   33   36   41   36   31    35
  20M |   13   15   13   13   17    6   14   19   16   17    5 |    38   45   39   39   52   39   43   44   36   44    39
  21M |    7   11   12   14   14    3   11   10   11   11    4 |    23   22   27   28   31   22   24   25   22   25    22
  22  |    9   13   13   13   20    5   13   14   12   15    4 |    33   34   30   38   47   32   35   35   34   34    33
  23E |   14   14   12   14   33    8   17   31   17   22    7 |    50   47   51   50   38   44   49   67   47   67    49
  24  |    9   12   14   10   15    7   10   11   13   14    4 |    21   25   24   18   24   17   23   19   22   17    19
  25  |   10   12   14    8   13    4   12    9   11    9    4 |    19   26   25   19   24   16   23   18   19   26    20
  26E |   21   22   13   20   18   11   17   19   36   19    7 |    49   49   44   53   46   48   48   34   59   41    44
  27M |   10   13   12    9   18    5    9   11   13   17    4 |    51   56   57   51   54   49   50   51   47   53    51
  28  |    9   13    8    9   18    5   10   12   12   10    4 |    42   41   34   40   45   36   39   39   41   40    38
  29  |   12   18   14   15   17    7   16   15   11   11    5 |    25   34   26   27   30   23   34   17   26   20    23
  30  |    9   13   14   10   12    6   11   14   12   11    4 |    24   24   26   20   25   19   24   21   21   25    21
  31  |    9   12   13   14   24    5   12   25   16   14    5 |    26   30   22   31   36   23   31   23   30   23    23
  32M |   10   11   12   10   16    3    9   18   12   11    4 |    21   23   21   19   22   18   25   23   23   20    19
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |   10   14   12   13   18    6   13   15   14   14      |T   59   62   58   59   66   56   33   59   61   61    58
 WRMS |   10   14   12   12   18    6   13   12   12   13      |NE  26   29   25   26   30   22   27   23   26   25    23
 MEDI |   10   13   12   13   17    6   12   13   12   14      |MD  32   33   27   31   34   25   30   26   32   31    27



Table 4: Precise Navigation Summary.

         Weekly station RMS w.r.t. the estimated coordinates for the Latitude,
         Longitude and Height components. See Table 5 for the daily summary.

         CLK  - Satellite clocks used.
         EPO  - Mean number of satellite clock epochs available in the daily
                solutions.
         Units: mm.

Table 4.1819   GPS week: 1819   MJD: 56977.0-56983.0

CENT| CLK EPO  |        BRUX       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 2975 |U    4     4    11 |U    8     9    34 |U    6     6    14 |
emr | emr 2958 |     7     6    15 |U    8     9    31 |     6     6    19 |
esa | esa 2976 |     6     5    17 |U    8    10    33 |     7     7    18 |
gfz | gfz 2972 |U    5     5    11 |U    8     9    34 |U    7     6    17 |
grg | grg 2852 |     9     8    20 |U   10    10    38 |U    8     9    20 |
igr | igr 2962 |     5     5    12 |     7     9    33 |     6     6    15 |
igs | igs 2967 |     5     4    12 |     8     9    33 |     6     6    15 |
jpl | jpl 2875 |     7     6    17 |U    9    10    35 |U    8     7    17 |
mit | mit 2962 |     6     5    14 |U    8     9    36 |U    7     7    19 |



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 5.1819.0   GPS week: 1819   Day: 0   MJD: 56977.0

CENT| CLK EPO  |        BRUX       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 2976 |     3     4    13 |     9     8    32 |     5     4    11 |
emr | emr 2976 |     5     5    17 |     8     8    28 |     6     5    18 |
esa | esa 2976 |     4     5    17 |     9     9    32 |     7     6    19 |
gfz | gfz 2976 |     4     4    13 |     9     8    29 |     7     6    16 |
grg | grg 2880 |     7     8    21 |     9     9    36 |     7     7    21 |
igr | igr 2976 |     4     5    14 |     9     8    30 |     6     5    14 |
igs | igs 2976 |     4     4    14 |     9     8    29 |     6     5    14 |
jpl | jpl 2976 |     5     4    17 |     9    10    31 |     6     4    17 |
mit | mit 2976 |     4     5    14 |     9     8    30 |     6     6    15 |

Table 5.1819.1   GPS week: 1819   Day: 1   MJD: 56978.0

CENT| CLK EPO  |        BRUX       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 2975 |     4     3     9 |     9    10    41 |     5     5    16 |
emr | emr 2972 |     5     4    16 |     9    11    43 |     5     6    20 |
esa | esa 2976 |     4     4    16 |     8    12    40 |     6     6    19 |
gfz | gfz 2972 |     4     3    14 |     9    11    41 |     6     4    17 |
grg | grg 2880 |     7     8    14 |    11    13    46 |     9    10    21 |
igr | igr 2976 |     4     4    14 |     8    11    41 |     5     5    17 |
igs | igs 2976 |     4     4    11 |     9    10    41 |     5     5    17 |
jpl | jpl 2970 |     6     6    18 |     9    12    41 |     8     7    21 |
mit | mit 2976 |     5     4    10 |    10    12    38 |     5     6    19 |

Table 5.1819.2   GPS week: 1819   Day: 2   MJD: 56979.0

CENT| CLK EPO  |        BRUX       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 2976 |     5     5    13 |     8    10    42 |     7     8    17 |
emr | emr 2972 |     8     6    16 |     9    11    40 |     8     8    23 |
esa | esa 2976 |     7     6    16 |     8    13    43 |     8     8    21 |
gfz | gfz 2972 |     6     6    11 |    10    13    45 |     9     9    23 |
grg | grg 2879 |     7     6    18 |     9    12    47 |     8    10    20 |
igr | igr 2976 |     6     6    12 |     8    10    42 |     7     8    17 |
igs | igs 2976 |     6     5    14 |     8    11    41 |     7     8    19 |
jpl | jpl 2778 |    10     8    16 |    12    15    54 |    11    11    17 |
mit | mit 2976 |     6     6    13 |     8     9    46 |     7     9    23 |

Table 5.1819.3   GPS week: 1819   Day: 3   MJD: 56980.0

CENT| CLK EPO  |        BRUX       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 2976 |     3     4     9 |     9     9    26 |     5     6    12 |
emr | emr 2972 |     8     6    16 |     9     9    26 |     5     5    16 |
esa | esa 2976 |     6     5    14 |     9    10    26 |     6     7    16 |
gfz | gfz 2972 |     5     5    10 |     9    10    29 |     6     6    15 |
grg | grg 2880 |    13     9    29 |    11     9    33 |     8     8    15 |
igr | igr 2976 |     4     5    11 |     9     9    27 |     6     7    14 |
igs | igs 2976 |     5     5    12 |     9     9    27 |     6     6    13 |
jpl | jpl 2876 |     7     6    14 |    10    11    30 |     7     7    16 |
mit | mit 2976 |     4     5    11 |     9     9    28 |     5     6    14 |

Table 5.1819.4   GPS week: 1819   Day: 4   MJD: 56981.0

CENT| CLK EPO  |        BRUX       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 2976 |     4     5     8 |     7     7    37 |     6     7    12 |
emr | emr 2972 |     9     6    13 |     8     6    32 |     7     8    20 |
esa | esa 2976 |     6     4    15 |     7     8    34 |     7     8    17 |
gfz | gfz 2972 |     6     5     9 |     9     7    38 |     7     8    17 |
grg | grg 2880 |     9    11    14 |    10     7    37 |     7     9    18 |
igr | igr 2976 |     5     5     9 |     7     7    36 |     6     7    15 |
igs | igs 2976 |     5     5    10 |     8     7    36 |     6     7    16 |
jpl | jpl 2874 |     7     5    18 |     8     8    38 |     7     6    17 |
mit | mit 2976 |     5     7    15 |     8     8    39 |     9    12    28 |

Table 5.1819.5   GPS week: 1819   Day: 5   MJD: 56982.0

CENT| CLK EPO  |        BRUX       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 2880 |     5     4    12 |     5     8    30 |     6     6    13 |
emr | emr 2876 |     9     6    15 |     6     7    26 |     7     6    15 |
esa | esa 2880 |     6     5    19 |     5     9    26 |     7     7    15 |
gfz | gfz 2876 |     7     5    12 |     6     7    26 |     7     6    15 |
grg | grg 2784 |    11     7    20 |     8     8    31 |     9     9    19 |
igr | igr 2880 |     5     5    14 |     5     7    28 |     6     5    13 |
igs | igs 2880 |     7     5    14 |     5     7    27 |     6     6    13 |
jpl | jpl 2780 |     8     7    16 |     6     8    28 |     6     6    16 |
mit | mit 2880 |    10     6    17 |     6     8    33 |     6     5    16 |

Table 5.1819.6   GPS week: 1819   Day: 6   MJD: 56983.0

CENT| CLK EPO  |        BRUX       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3068 |     4     4    12 |     7     7    31 |     7     5    15 |
emr | emr 2972 |     9     7    16 |     9     9    26 |     8     7    22 |
esa | esa 3072 |     5     5    20 |     8     9    28 |     9     7    19 |
gfz | gfz 3068 |     6     5    10 |     7     8    29 |     9     6    16 |
grg | grg 2784 |     9     7    26 |    11     9    38 |    10     9    30 |
igr | igr 2976 |     5     4    14 |     6     7    26 |     7     5    15 |
igs | igs 3015 |     6     4    11 |     7     7    27 |     7     6    16 |
jpl | jpl 2876 |     9     9    18 |     8     8    25 |     8     6    18 |
mit | mit 2976 |     6     4    17 |     7     8    34 |     9     7    18 |


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 6.1819   GPS week: 1819   MJD: 56977.500-56983.500

                                                         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 |       5      13     -64      47      7 |      13     21
            |      17      16      78     127      4 |       5
emr   uuuuu |      25      16     165      20      4 |      42     46
            |      17      13      71      32      7 |       2
esa   uuuuu |      13       9      31      -9      0 |      18     24
            |       7      19      50      62      3 |       3
gfz   uuuux |       3     -21      -6      23      1 |     -63     65
            |      18      18     103     118      5 |       2
grg   uuuuu |     -16       3     -93    -127     -6 |      20     25
            |      14      29     132     103      8 |       2
igr   xxxxx |     -27      -2      38     -60      1 |       0     17
            |      15      16      56      61      4 |       2
irf   xxxxx |       6       7     -53       5      2 |      -2     15
            |       4       9      44      12      3 |       3
jpl   uuuuu |     -25     -21      22      29     -5 |      33     38
            |      30      24     108      72     10 |       1
mit   uuuuu |       4       8    -143      -6     -1 |      10     17
            |      11      21      71      27      4 |       1
ngs   uuuuu |      -2       6      87     -48     -2 |       4     14
            |      38      35     109      63      6 |       1
sio   uuxxx |     -18     -13     -11     -80      8 |      33     36
            |      20      20      64      38     11 |       4


Table 7.1819.0   GPS week: 1819   Day: 0   MJD: 56977.500

                                                         AC LOD  AC LOD
CENT  FLAG  |   Xpole   Ypole     Xrt     Yrt    LOD |    BIAS  BIAS RMS
            |   [uas]   [uas]   [uas/d] [uas/d]  [us]|    [us]    [us]
------------+----------------------------------------+------------------
cod   uuuuu |      -7      13     -96     -65     15 |       6     13
emr   uuuuu |      35      20     134      24      0 |      40     44
esa   uuuuu |      21      11      66      15      2 |      15     20
gfz   uuuux |      11     -32     -36     165     -4 |     -66     67
grg   uuuuu |     -32      41    -172    -231     -6 |      21     26
igr   xxxxx |     -50      -5      68       6      2 |      -2     17
irf   xxxxx |       8      18     -30      12     -1 |      -5     14
jpl   uuuuu |     -20     -31      64     -13      6 |      32     36
mit   uuuuu |      -2      28     -91      30     -6 |       9     16
ngs   uuuuu |     -14     -36      82      36    -15 |       4     15
sio   xxxxx |     -51      26     -22     -51     -9 |      28     32

Table 7.1819.1   GPS week: 1819   Day: 1   MJD: 56978.500

                                                         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 |      -5      15       1       9      1 |      10     22
emr   uuuuu |      -3      11     174      31      7 |      41     46
esa   uuuuu |      22      19     -25     -56     -1 |      18     25
gfz   uuuux |       3       4     -61      55     -1 |     -64     66
grg   uuuuu |     -12      22    -197    -202    -15 |      22     28
igr   xxxxx |     -30     -17     -13      12      2 |       0     20
irf   xxxxx |       2      23    -101     -15      3 |      -3     17
jpl   uuuuu |     -14     -33     139     117      4 |      34     41
mit   uuuuu |       4      35    -224     -49      0 |      10     19
ngs   uuuuu |       2     -40     119      -2      3 |       5     17
sio   uuxxx |       3     -24     -67     -88      8 |      29     34

Table 7.1819.2   GPS week: 1819   Day: 2   MJD: 56979.500

                                                         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 |      -9      19      66      65      3 |       9     21
emr   uuuuu |       6       4      75     -29      9 |      39     43
esa   uuuuu |       3      -4     102     -90      2 |      16     22
gfz   uuuux |      24     -53     -61     128      8 |     -65     67
grg   uuuuu |       0     -43     -26    -173     -4 |      19     25
igr   xxxxx |     -24      31     -46    -153      2 |      -3     17
irf   xxxxx |       3       2     -96      -3      3 |      -4     16
jpl   uuuuu |     -18       7    -172      96     -7 |      32     37
mit   uuuuu |      10       6    -219     -14     -2 |       9     17
ngs   uuuuu |       0      53     218     -95      0 |       3     14
sio   uuxxx |     -11     -13     -86    -124      8 |      29     34

Table 7.1819.3   GPS week: 1819   Day: 3   MJD: 56980.500

                                                         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      -7     -34      38     10 |      12     20
emr   uuuuu |      43       8     255      45     11 |      40     44
esa   uuuuu |      17       0      56      79      6 |      18     23
gfz   uuuux |      20     -15     -43      -1     -1 |     -63     64
grg   uuuuu |     -32      21    -197     -67    -12 |      20     25
igr   xxxxx |      -5       3      63     -37      7 |      -1     16
irf   xxxxx |       7       6     -38       7      3 |      -2     14
jpl   uuuuu |      20      10     -36      -8      1 |      33     37
mit   uuuuu |      11      11    -101     -27      0 |      10     16
ngs   uuuuu |     -67       0      52    -114     -5 |       4     14
sio   uuxxx |     -41      -9       3     -47     -2 |      32     35

Table 7.1819.4   GPS week: 1819   Day: 4   MJD: 56981.500

                                                         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 |     -10      -1    -104    -123      7 |      16     23
emr   uuuuu |      28       5     208      39      8 |      44     47
esa   uuuuu |       6     -12      29     -41     -3 |      21     25
gfz   uuuux |       1     -11     -92      75      0 |     -61     63
grg   uuuuu |      -7       9    -113      33     -5 |      20     25
igr   xxxxx |     -22      -7      71     -60      1 |       2     16
irf   xxxxx |       8       5     -84      22      6 |       0     14
jpl   uuuuu |     -33     -21     125      97    -10 |      35     39
mit   uuuuu |      10      14    -197       0      6 |      11     18
ngs   uuuuu |      29      31     181      21     -4 |       5     14
sio   uuxxx |     -15     -11     -48     -31     12 |      36     37

Table 7.1819.5   GPS week: 1819   Day: 5   MJD: 56982.500

                                                         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 |      19      11    -148     161      9 |      17     24
emr   uuuuu |      25      21     229      50      1 |      45     48
esa   uuuuu |      11       6      27     -28     -4 |      20     25
gfz   uuuux |     -11     -24      50    -148      7 |     -62     63
grg   uuuuu |      -3      -1    -121     -38     -7 |      18     22
igr   xxxxx |     -14     -16     112     -69      3 |       1     16
irf   xxxxx |      11       0     -39       6      2 |       0     14
jpl   uuuuu |     -30     -19      50     -22    -10 |      34     38
mit   uuuuu |      15     -20    -127      19      0 |      11     17
ngs   uuuuu |     -19      33      75     -89      1 |       3     11
sio   uuxxx |     -12     -18      53     -95     21 |      36     38

Table 7.1819.6   GPS week: 1819   Day: 6   MJD: 56983.500

                                                         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 |      33      42    -133     246      5 |      20     25
emr   uuuuu |      39      42      81     -20    -10 |      45     49
esa   uuuuu |      14      45     -38      58      1 |      21     25
gfz   uuuux |     -28     -16     204    -116     -2 |     -61     62
grg   uuuuu |     -28     -25     174    -214     10 |      17     21
igr   xxxxx |     -43       0       9    -118     -6 |       2     16
irf   xxxxx |       1      -2      20       5     -2 |       2     13
jpl   uuuuu |     -82     -58     -19     -63    -22 |      32     37
mit   uuuuu |     -18     -17     -42       0     -7 |      12     17
ngs   uuuuu |      53      -1    -119     -91      1 |       3     11
sio   uuxxx |      -2     -40      90    -126     19 |      39     41



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