[IGSREPORT-25178] Wk 1940 IGS Final Orbits

acc acc at igs.org
Mon Apr 3 17:28:32 PDT 2017


Author:  AC Coordinator / GA MIT 

sum-file Version 2.0
Final IGS Orbit Combination - Week 1940   (Mar 12, 2017 - Mar 18, 2017)

Contacts: acc at igs.org


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:

igs1940[0-6].sp3  IGS GPS ephemeris files in SP3 format.
igs1940[0-6].clk  IGS GPS satellite and station clocks in clock RINEX format.
igs1940[0-6].cls  IGS GPS clock combination summary report.
igs19407.erp      Earth Rotation Parameters (ERP) and their rates as well as
                  Universal Time (UT1-UTC) and Length Of Day (LOD) associated 
                  with IGS ephemerides.
igs19407.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   | STJO TIXI WHIT YELL SCH2 STJO TIXI WHIT YELL
                0  |  EMR   | ALGO PRDS ALGO GRAZ PRDS STJO
                0  |  ESA   | AUCK AUCK MAL2
                0  |  GFZ   | GMSD GODE SYOG WHIT DRAO GMSD GODE SCH2 SYOG WHIT
                0  |  GRG   | ADIS GLSV KIT3 NICO RIO2 STJO SYOG YELL ADIS FAA1
                0  |  GRG   | GLSV KIT3 NICO RIO2 SEYG SYOG YELL
                0  |  MIT   | WTZZ
                1  |  COD   | MAL2 NANO TIXI MAL2 NANO TIXI
                1  |  ESA   | FAA1 KOUR FAA1 KOUR
                1  |  GFZ   | CRO1 FAA1 GMSD GODE SYOG YELL CRO1 FAA1 GMSD GODE
                1  |  GFZ   | SOFI SYOG YELL
                1  |  GRG   | 10 ADIS CRO1 GLSV KIT3 KOUR LPGS MAC1 MAL2 NICO RIO2
                1  |  GRG   | SCUB SYOG ULAB YELL ADIS CRO1 GLSV KIT3 KOUR LPGS
                1  |  GRG   | MAL2 NICO RIO2 SCUB SYOG ULAB YELL
                1  |  JPL   | MAL2 MAL2
                2  |  COD   | DUBO FAA1 SYOG TIXI DUBO FAA1 SYOG TIXI
                2  |  EMR   | SYOG DAEJ SYOG
                2  |  ESA   | AUCK
                2  |  GFZ   | FAA1 GMSD GODE KOUR FAA1 GMSD GODE KOUR
                2  |  GRG   | ADIS GLSV KIT3 KOUR MAC1 MAS1 MGUE NRMD PDEL REUN
                2  |  GRG   | SYOG TRO1 VILL ADIS GLSV KIT3 KOUR MAC1 MAS1 MGUE
                2  |  GRG   | NRMD PDEL REUN SYOG TRO1 VILL
                3  |  COD   | BRMU SYOG TIXI BRMU MAL2 TIXI
                3  |  EMR   | YELL
                3  |  ESA   | AUCK DUBO AUCK DUBO FAA1
                3  |  GFZ   | DUBO GMSD GODE FAA1 GMSD GODE
                3  |  GRG   | ADIS GLSV KIT3 MAC1 PDEL ADIS DARW GLSV KIT3 MAC1
                3  |  GRG   | MAL2 PDEL
                3  |  JPL   | AUCK MAL2
                4  |  COD   | ALGO TIXI ALGO TIXI
                4  |  ESA   | CHUR FAA1 MAL2 WHIT CHUR FAA1 MAL2 SCH2 WHIT
                4  |  GFZ   | 12 12 16 FAA1 GMSD GODE MAL2 SCH2 AUCK FAA1 GMSD
                4  |  GFZ   | GODE MAL2 SCH2
                4  |  GRG   | ADIS GLSV KIT3 KOUR MANA PDEL ADIS DARW GLSV KIT3
                4  |  GRG   | KOUR MAC1 MANA PDEL
                5  |  COD   | TIXI TIXI
                5  |  EMR   | BJNM BJNM GRAZ
                5  |  ESA   | AUCK DRAO MAL2 AUCK DRAO MAL2
                5  |  GFZ   | 13 DRAO GMSD GODE NKLG STJO DRAO GMSD GODE MDVJ NKLG
                5  |  GFZ   | STJO
                5  |  GRG   | 17 17 GLSV KIT3 MAC1 MAW1 RIO2 STJO BRFT CHTI GLSV
                5  |  GRG   | KIT3 MAC1 MAW1 NKLG RIO2 STJO
                5  |  MIT   | AUCK AUCK
                6  |  COD   | BJNM JFNG SYOG TIXI BJNM JFNG TIXI
                6  |  ESA   | SYOG
                6  |  GFZ   | FAA1 GMSD GODE FAA1 GMSD GODE
                6  |  GRG   | 13 13 ADIS GLSV KIT3 KOUR MAC1 RIO2 SYOG ADIS GLSV
                6  |  GRG   | KIT3 KOUR RIO2

 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. 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.
    
    Starting 29-Jan-2017 (GPS Week 1934, day 0, MJD 57782) all IGS products,
    are based on the IGS realization of the ITRF2014 reference frame (IGS14).
    For more information see IGSMAIL #7399.

 7. 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 |     .0     .4     .1       1      8     -5     .01
       EMR  |   0 |    6.3   -7.4    6.3       4     16     11     .50
       ESA  |   0 |     .1   -1.0     .4     -31     13     11     .10
       GFZ  |   0 |     .5     .3   -1.1      -1    -36     -1     .15
       GRG  |   0 |   -1.0   -2.5   12.7      40    -17    171     .13
       JPL  |   0 |    3.1  -11.8    5.9      -5    -62     47     .43
       MIT  |   0 |    1.1   -8.6    8.3     -14     -5     12     .17
       NGS  |   0 |    1.9  -10.4    7.1      39     -8     -9     .18
       SIO  |   0 |    4.3   -6.2    4.5      -7      8    -14     .31

       COD  |   1 |    -.2     .3     .1       4      6     -2     .16
       EMR  |   1 |     .4  -11.3   11.7      20     12      1     .51
       ESA  |   1 |     .6    -.2     .6     -19      5      8    -.02
       GFZ  |   1 |     .3     .4   -1.0      -2    -33      0     .25
       GRG  |   1 |    2.3   -4.2    -.1      45    -42    137     .36
       JPL  |   1 |   -2.9   -7.9    6.4     -33    -52      2     .54
       MIT  |   1 |    3.2   -7.4   12.9       6     18      8     .29
       NGS  |   1 |    3.0  -10.5   13.7      50      5     -3     .53
       SIO  |   1 |     .4   -2.9    6.0      -6     13    -13     .37

       COD  |   2 |    -.0     .4     .2       5      1      3    -.03
       EMR  |   2 |    3.1   -1.6    3.7      24     31    -20     .44
       ESA  |   2 |    -.2    -.5     .5     -15     15     12    -.03
       GFZ  |   2 |     .4     .7   -1.0       4    -28     -4     .17
       GRG  |   2 |    3.6     .7   16.7      33    -20     44     .19
       JPL  |   2 |    3.6  -12.1    7.9     -23    -33     12     .55
       MIT  |   2 |    5.0   -8.1    7.5      13      8      9     .41
       NGS  |   2 |    7.3   -6.7    9.2      15    -13    -10     .29
       SIO  |   2 |    4.1   -2.6    1.8      -2     -1      4     .23

       COD  |   3 |    -.0     .3     .2       3      7    -14    -.18
       EMR  |   3 |    6.2   -6.3    3.2      17     21    -13     .41
       ESA  |   3 |     .0    -.5     .8     -19      2     16    -.07
       GFZ  |   3 |     .4     .5   -1.0       1    -22     -7     .11
       GRG  |   3 |   -3.5   -5.1    7.7      63    -27    141     .09
       JPL  |   3 |    5.7   -9.2    3.3     -10    -53      9     .50
       MIT  |   3 |    2.5   -6.3    8.2       6     10     14     .22
       NGS  |   3 |    7.8   -6.4   11.2      10     -8    -20     .16
       SIO  |   3 |     .4   -1.5     .6       0      4      0     .33

       COD  |   4 |    -.1     .2     .8       8     11      4    -.27
       EMR  |   4 |    1.7    -.6    3.7      11      4    -44     .34
       ESA  |   4 |     .1    -.3     .7     -10      8     14    -.22
       GFZ  |   4 |     .5     .4    -.6       1    -34      1    -.04
       GRG  |   4 |   -1.4    3.6    5.5      48    -14    210    -.04
       JPL  |   4 |   -4.7   -5.2    5.7       4      5     17     .69
       MIT  |   4 |     .6   -3.3   10.6      15      3      6     .08
       NGS  |   4 |   -3.0    -.7    7.8       9    -29     12    -.01
       SIO  |   4 |   -1.5    -.7    7.4      -3     16     -5     .15

       COD  |   5 |    -.4     .2     .6       4     25     10    -.08
       EMR  |   5 |    2.9   -1.0    8.6      20     27     18     .33
       ESA  |   5 |    -.5   -1.0     .7     -19     14     33    -.14
       GFZ  |   5 |     .1     .1    -.9      -8    -32      5     .12
       GRG  |   5 |     .5    -.2   22.3      48    -30     26    -.29
       JPL  |   5 |    -.6   -3.4    3.2      15    -19    -12     .80
       MIT  |   5 |   -3.5   -4.3    8.9      10      6     -2     .04
       NGS  |   5 |    3.2   -5.6   10.1      -3    -18     16     .11
       SIO  |   5 |    -.3   -1.3     .4     -13     26    -11     .22

       COD  |   6 |    -.7     .2     .7       3     23      6    -.19
       EMR  |   6 |    5.2   -4.8    4.0      -7     10    -51     .28
       ESA  |   6 |    -.7    -.7     .4     -17      3     24    -.14
       GFZ  |   6 |     .3     .3    -.7      -3    -35      7    -.02
       GRG  |   6 |    9.7    3.4   16.3      40    -49     22    -.22
       JPL  |   6 |    6.4   -7.9    3.0       0    -55     15     .47
       MIT  |   6 |   -4.4   -5.0    5.8      34      7     11    -.03
       NGS  |   6 |    -.9   -9.0    8.6      27    -27    -20    -.24
       SIO  |   6 |   -1.6   -2.2   -4.3      -2      9      0     .18


 8. 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.

 9. 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.
    
    Starting 29-Jan-2017 (GPS Week 1934, day 0, MJD 57782) the absolute antenna
    model file has been updated to igs14.atx to be consistent with IGS14.
    See IGSMAIL #7399 for more information
        ftp://igs.org/pub/station/general/igs14.atx


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 1.1940.a). It also displays the computed satellite
position sigmas for the combined orbits (Table 1.1940.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 2.1940.[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 3.1940.[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 5.1940.0-6). 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 1940 summary.                       (Mar 12, 2017 - Mar 18, 2017)

Table 1.1940.a   GPS week: 1940   MJD: 57824.000-57830.000

         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  272|    0     0     0    -7    10     3  -.05   11   10 |    -663      -4     11    103
        |    0     0     1    18    14    14   .03           |     222     340
emr   79|   -1     0     0    -2   -27     2   .39   15   15 |    2539      69     14    106
        |    1     0     1    15    13    16   .03           |     584     572
esa  150|    0     0     0    -4     9    25  -.04   11   11 |    -719    -239      7    162
        |    0     0     0    13     9    14   .02           |     602    1302
gfz  197|    0     0     0     0     7     1   .06   11   10 |    -423      49     10    142
        |    0     0     0    12    15    11   .02           |     246     221
grg  108|    0    -1    -1    -5    28   -21  -.38   16   15 |   -3005  -53335     14    182
        |    0     0     4    18    22    15   .03           |   21601  111998
igr  n/a|    0     0    -1    -5    -1    -3   .04    4    4 |    9759    -112     12     72
        |    0     0     0    12    13    11   .01           |     792     542
jpl   80|   -1     0     1    31    -3    14   .29   12   12 |    1864      59     42    201
        |    1     0     1    26    25    14   .02           |     937     593
mit  350|    0    -2     0     4   -16     2  -.10   12   11 |     -80    -365     38    312
        |    1     0     0    39    16    15   .03           |     372     192
ngs  217|   -1     0     1    25     2     7   .02    9    8 |    -698      17   1008   2224
        |    0     0     1    15    25    15   .05           |     162     322
sio  337|    1     0    -1   -14   -11   -24   .10   12   12 |     ---     ---    ---    ---
        |    0     0     1    23    21    25   .02           |     ---     ---


Table 1.1940.b   GPS week : 1940   MJD: 57824.000-57830.000   

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



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 2.1940.0   GPS week: 1940   Day: 0   MJD: 57824.000                            

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  265|    0     0     0    20    31   -16  -.05   10    9 |    -648      90     11    108
emr   80|   -3     0     0    14   -39    20   .42   14   14 |    2449     656     14     92
esa  150|   -1     1     0    12    -4    18  -.03   11   12 |   -1053     516      7    130
gfz  194|    0     1    -1    18   -17    -3   .03   10   10 |    -372     -69     10    124
grg  111|    0    -2     0   -17   -12    -1  -.38   13   12 |      -4     121     15    201
igr  n/a|    0     0     0     8   -16   -12   .06    5    5 |   10710      54     13     65
jpl   80|    0     0     1    23   -38    31   .30   12   12 |    2676     684     41    199
mit  350|    1    -2    -1   -55    -3     0  -.13   14   13 |    -812    -188     40    243
ngs  221|    0     0     1    15    27    -3   .08    9    7 |    -669      91    978   2083
sio  338|    1     2     0   -39   -16    -9   .08   14   14 |     ---     ---    ---    ---

Table 2.1940.1   GPS week: 1940   Day: 1   MJD: 57825.000                            

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  272|    0     0     0   -18     8    -8  -.09   10    9 |    -647    -142     12    103
emr   79|   -2     0     3     0   -20   -19   .41   15   15 |    3176      75     15     97
esa  150|    0     1     0   -20     1     4  -.05   11   11 |    -737    -195      8    187
gfz  198|    0     1     0     0    -2    -7   .04   11   10 |    -330     148     12    163
grg  100|    0    -1    -7    -5    53   -12  -.41   17   16 |      26      88     16    168
igr  n/a|    0     1     0    -8    -4   -22   .04    4    4 |   10668      -8     14     71
jpl   80|    0     0     1    65    41     4   .30   12   12 |    3385     125     40    196
mit  350|    1    -2     0    35   -22     8  -.11   12   11 |     -22    -400     37    309
ngs  217|    0     0     2    27    20    40   .06   10    9 |    -563    -427    912   1928
sio  348|    0     0    -2     1   -22   -13   .09   12   12 |     ---     ---    ---    ---

Table 2.1940.2   GPS week: 1940   Day: 2   MJD: 57826.000                            

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  272|    0     0    -2   -11   -11    -5  -.06   12   11 |    -794     103     12     97
emr   80|   -1     0     1    15   -37   -16   .38   16   16 |    2654    -677     16     96
esa  150|    0     0     0     4    11    22  -.04   11   11 |   -1311     933      8    144
gfz  198|    0     1     0     0    21     2   .08   11   10 |    -957     310     12    123
grg  112|    1    -1     0     0    11   -12  -.37   14   14 |      -7      22     14    168
igr  n/a|   -1     0     0    -8   -18     0   .02    5    5 |   10126    -996     13     66
jpl   80|    0    -1     2    63    -6    -6   .28   13   13 |    1935    -831     45    180
mit  350|    1    -2    -1    13    -1    16  -.09   12   12 |     158    -395     41    321
ngs  225|    0     0     2     1     1    -2   .04    9    8 |    -810     119   1071   2731
sio  352|    1     1     0   -11   -13    -1   .07   12   11 |     ---     ---    ---    ---

Table 2.1940.3   GPS week: 1940   Day: 3   MJD: 57827.000                            

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  274|    0     0     0    -4    15     9  -.06   10   10 |    -357    -378     10    100
emr   80|   -1     1     0    -3   -42    17   .43   15   15 |    1956    -153     16    109
esa  150|    1     0     0     4    13    31  -.04   11   11 |    -193    -908      7    199
gfz  197|    0     0     0   -10    22     5   .02   11   11 |    -413    -196     11    187
grg  106|    1    -1    -3     6    29   -27  -.41   16   15 |      78     -47     16    192
igr  n/a|    0     0    -1     0    18     7   .04    4    4 |    9068    -159     13     79
jpl   80|   -1     0     2    43     4    22   .28   12   12 |    1000    -159     42    202
mit  350|    0    -2    -1    -1    -4    -3  -.06   11   11 |       0    -454     38    354
ngs  216|   -1     0     4    36    -8     9   .03    9    8 |    -724     160    872   1949
sio  352|    1     0     0   -27   -28   -36   .09   13   11 |     ---     ---    ---    ---

Table 2.1940.4   GPS week: 1940   Day: 4   MJD: 57828.000                            

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  271|    0     0     0   -24     7     1  -.05   11   10 |    -586     -82     11    114
emr   80|   -1     1     0   -28    -2    12   .40   15   15 |    1748     368     13    103
esa  150|    1     0     1   -15     8    17  -.08   11   11 |    -510   -2090      7    151
gfz  197|    0     1     0    -7     9    22   .07   11   11 |    -200     -86     11    155
grg  106|    0    -2    -5   -27    36   -26  -.39   17   16 |      98    -266     16    183
igr  n/a|   -1     1     0   -26     1    -8   .04    5    5 |    8827     161     14     74
jpl   80|   -3     1     4    -6    12     4   .27   12   12 |     825     366     44    208
mit  350|    0    -2     0    35   -19     0  -.07   11   11 |      22    -719     36    360
ngs  214|   -1     0     1    23     0     0   .00    8    7 |    -555    -152   1091   2344
sio  325|    1     0    -1    22   -26   -23   .11   12   11 |     ---     ---    ---    ---

Table 2.1940.5   GPS week: 1940   Day: 5   MJD: 57829.000                            

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  274|    0     0     3    15     0    21  -.03   11    9 |   -1069     656     11    107
emr   79|    1     0     0    -5   -29    -6   .36   14   14 |    2450     788     16    121
esa  150|    0     0     0     1     8    38  -.03   11   11 |   -1444    1486      7    161
gfz  201|    0     0    -1    13    -3   -11   .08   11   11 |    -409     358      9    132
grg  105|    0     0     4    25    32   -20  -.38   16   14 |  -46931 -299572     13    180
igr  n/a|    0     1    -2     9     1    11   .02    4    4 |    9026     711     12     82
jpl   80|    0     1     0    12   -20    14   .32   13   13 |    1202     741     45    217
mit  350|    0    -1    -2   -40   -14   -24  -.09   12   11 |     353    -166     42    284
ngs  215|    0     0     0    24    22     9  -.04   10    9 |    -997     564   1004   2158
sio  325|    1     0    -4   -44    -7   -10   .13   13   13 |     ---     ---    ---    ---

Table 2.1940.6   GPS week: 1940   Day: 6   MJD: 57830.000                            

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  276|    1    -1     1   -27    23    18   .00   10   10 |    -545    -281     10     98
emr   80|    0     1     0    -8   -22     7   .37   14   14 |    3345    -569     14    124
esa  150|    0     1     0   -20    26    47  -.02   11   11 |     215   -1416      7    162
gfz  200|    0     0    -1   -15    20     5   .07   11   11 |    -284    -117     10    111
grg  116|    0     0     3   -21    48   -50  -.33   15   14 |   25699  -73697     12    185
igr  n/a|    0     1     0   -11     9    -1   .04    4    4 |    9890    -548     11     73
jpl   80|    0     0     0    21   -14    29   .29   12   12 |    2029    -508     41    208
mit  350|   -1    -1    -1    45   -47    22  -.13   12   11 |    -264    -239     37    315
ngs  214|   -1     0     1    50   -45     0  -.07    9    8 |    -569    -233   1131   2375
sio  322|    2     0    -1    -4    34   -76   .12   11   12 |     ---     ---    ---    ---

       
       
Table 3: Daily fit for each satellite and each centre resulting from weighted
         average combination and from long arc orbit dynamics (7-day). The
         first IGS column gives resulting satellite accuracy measures found in
         SP3 header. The last IGS column gives the RMS fit of the IGS orbit
         when processed through the 7-day arc evaluation.

         "E"    stands for eclipsing satellites (earth).
         "M"    stands for eclipsing satellites (moon).
         "X"    stands for excluded from the statistics but included in IGS orbit.
         "T"    stands for Total long arc orbit RMS for all satellites.
         "NE"   stands for long arc orbit RMS for Non-Eclipsing satellites only.
         "MEDI" stands for median of the centre's satellite RMS.
         "MD"
         Units: mm.

Table 3.1940.0   GPS week: 1940   Day: 0   MJD: 57824.000                            

        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    9    8    6    9    4    8   11    4   12    3 |     3    4    3    3  ---    2    3  ---  ---  ---     2
   2  |   10   12    9   12   15    6   11   15   12   21    5 |     3    3    3    3  ---    2    3  ---  ---  ---     2
   3E |   14    8   20    7   13    4   10   11    8   11    4 |     3    5    4    4  ---    3    4  ---  ---  ---     3
  X4E |    2  ---  ---  ---  ---   17  ---  ---  ---  ---    0 |     4  ---  ---  ---  ---    5  ---  ---  ---  ---     4
   5E |   13   15    8   13   16    4   15   11    9   12    4 |     4    7    3    4  ---    3    4  ---  ---  ---     3
   6  |    8    8    6    6    9    5    8   12    6   11    3 |     3    4    3    2  ---    3    3  ---  ---  ---     2
   7  |    7   13   12   11    8    5   10   13    8   17    4 |     3    3    3    3  ---    2    3  ---  ---  ---     2
   8  |    9    9    7    5    9    6   11   13    7    7    3 |     3    5    3    3  ---    3    3  ---  ---  ---     2
   9  |    7   11    8    8    7    4    9   10    6   14    3 |     3    4    3    3  ---    3    3  ---  ---  ---     2
  10E |   13   12   20    7   21    4   10   13    9   13    5 |     3    6    4    4  ---    3    4  ---  ---  ---     3
  11  |    7   10   18    7    8    4   10   12    7   13    4 |     3    3    3    3  ---    2    3  ---  ---  ---     2
  12E |    7   25    9   14   21    6   22   11   12   14    5 |     3    7    4    4  ---    3    4  ---  ---  ---     3
  13  |    8   16   12   10   11    6   13   12   11   14    4 |     3    4    2    3  ---    2    3  ---  ---  ---     2
  14  |   15   10   11   14   11    4   10   13   11   21    5 |     4    4    3    3  ---    3    2  ---  ---  ---     2
  15  |    8   13   12   10   16    6   17   18   12   11    4 |     3    4    2    3  ---    3    3  ---  ---  ---     2
  16E |   11   20    9   13   12    4   15   11   11    9    4 |     3    6    4    4  ---    3    4  ---  ---  ---     3
  17  |    9   13   11   12   12    5    8   16   10   18    4 |     3    3    2    3  ---    2    3  ---  ---  ---     2
  18E |   11   21    7   10   11    5   14   18    9   16    5 |     3    4    3    4  ---    3    3  ---  ---  ---     3
  19  |    6   19   12   14   12    5   12   18    9   17    5 |     3    5    3    2  ---    2    3  ---  ---  ---     1
  20E |   20   13    7   13   16    5   11   15   12   14    5 |     4    7    4    4  ---    3    4  ---  ---  ---     3
  21  |   14    9   10   12   11    6   12   16   11   21    5 |     3    3    3    2  ---    2    2  ---  ---  ---     2
  22E |   15   10    7    9   15    5    9   11    7   12    4 |     3    5    3    3  ---    3    4  ---  ---  ---     2
  23  |    9   20   11   14   11    6   13   14   12   20    5 |     3    3    5    2  ---    3    3  ---  ---  ---     2
  24  |    6    8    6    7   12    5   10   10    6   15    3 |     2    4    3    3  ---    3    3  ---  ---  ---     2
  25E |   10   11   17    6   22    4   12   12   10   14    5 |     3    5    5    5  ---    4    5  ---  ---  ---     3
  26E |   13   21   19    9   18    5   11    9    6   11    5 |     3   14    5    4  ---    4    5  ---  ---  ---     3
  27  |    8   10    6    6   10    4    9   11    4    9    3 |     3    4    3    3  ---    2    3  ---  ---  ---     2
  28E |    8   17    9    7   12    5   10   18    8   10    4 |     5    4    4    3  ---    3    4  ---  ---  ---     3
  29  |   11   22   10   13   11    4   20   19   11   16    5 |     2    3    3    2  ---    3    3  ---  ---  ---     2
  30  |    6    9    7    5    6    2    6   16    4   11    3 |     3    3    3    3  ---    3    3  ---  ---  ---     1
  31  |    8   13   11   11   12    5   13   15   11   14    4 |     3    4    3    4  ---    3    3  ---  ---  ---     2
  32  |   12   11    6    6    6    4    9   12    6   12    3 |     3    4    3    2  ---    3    4  ---  ---  ---     1
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |   10   14   11   10   13    5   12   14    9   14      |T    3    4    3    3  ---    2    3  ---  ---  ---     2
 WRMS |    9   14   12   10   12    5   12   13    7   14      |NE   2    3    2    2  ---    2    2  ---  ---  ---     1
 MEDI |    9   12    9   10   12    5   11   13    9   14      |MD   3    4    3    3  ---    3    3  ---  ---  ---     2

Table 3.1940.1   GPS week: 1940   Day: 1   MJD: 57825.000                            

        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    6   11   10    2    9    9    9   12    3 |     3    4    3    3  ---    2    3  ---  ---  ---     2
   2  |    9   13   10   15   16    4   12   12   13   16    4 |     3    3    4    3  ---    3    2  ---  ---  ---     3
   3E |   12    8   19    8   30    4   11   11    9   10    5 |     3    4    4    4  ---    3    4  ---  ---  ---     3
  X4E |    2  ---  ---  ---  ---   24  ---  ---  ---  ---    0 |     7  ---  ---  ---  ---   18  ---  ---  ---  ---     7
   5E |    7   14    6   12   30    3   12   10   10    8    4 |     3    7    3    4  ---    3    4  ---  ---  ---     3
   6  |    8    9    6    8    7    5   10   10    5   12    3 |     3    4    3    3  ---    3    3  ---  ---  ---     2
   7  |    9   12   13   11   13    4   10   10   11   16    4 |     3    3    3    3  ---    2    3  ---  ---  ---     2
   8  |    8   10    8    8   14    3   10   10    6    8    3 |     4    5    3    3  ---    3    3  ---  ---  ---     2
   9  |    8   10    8    7    7    4    9    7    9   10    3 |     3    4    4    3  ---    3    3  ---  ---  ---     2
  10E |   12   10   19    7   18    4   10    9    8   10    4 |     3    6    4    4  ---    3    4  ---  ---  ---     3
  11  |    8   11   14   11   12    3   10    9    7   10    4 |     3    3    4    3  ---    2    3  ---  ---  ---     2
  12E |    8   27    8   14   22    4   23   10   11    9    5 |     3    9    4    4  ---    3    5  ---  ---  ---     3
  13  |    9   13   10   12   12    4   13   13   11   13    4 |     3    5    3    3  ---    2    3  ---  ---  ---     2
  14  |   12   14   12   15   14    5   14   11   11   18    5 |     4    5    3    3  ---    3    2  ---  ---  ---     2
  15  |    7   14   11   10   13    4   12   16   11    9    4 |     3    4    3    3  ---    3    3  ---  ---  ---     2
  16E |   17   22    8   10   12    4   15   10   12    8    4 |     3    6    4    4  ---    3    4  ---  ---  ---     3
  17  |    8   12   10   12   12    4    9   12    8   13    4 |     3    3    3    2  ---    2    3  ---  ---  ---     2
  18E |   10   23    6   15   27    4   12   20   15   14    6 |     3    5    4    5  ---    3    3  ---  ---  ---     3
  19  |    9   19   10   13   14    3   11   15   10   13    5 |     4    6    3    4  ---    2    3  ---  ---  ---     2
  20E |   15   17    6   15   27    4   11   13   13   11    5 |     4   10    4    4  ---    3    4  ---  ---  ---     4
  21  |   14   12   10   11   17    4   10   16   11   16    5 |     3    4    3    3  ---    2    2  ---  ---  ---     2
  22E |   11    9    6   10   20    3    9    9   14    9    4 |     4    4    3    4  ---    3    3  ---  ---  ---     3
  23  |    8   23   12   12   14    6   12   14   14   19    5 |     3    3    6    4  ---    2    3  ---  ---  ---     2
  24  |    9    8    7    7   10    4    7    8    6    9    3 |     4    3    3    3  ---    2    3  ---  ---  ---     2
  25E |   10   10   16    7   13    3   11   13    8    9    4 |     4    6    5    5  ---    4    5  ---  ---  ---     3
  26E |   12   23   18    7   17    4   12    6    7   10    5 |     3   17    5    4  ---    4    5  ---  ---  ---     4
  27  |    6   10    6    7   11    2    9   10    8    8    3 |     3    4    3    2  ---    2    3  ---  ---  ---     2
  28E |    9   13    7    9   26    4    9   20    9   11    5 |     5    4    5    4  ---    3    4  ---  ---  ---     3
  29  |   10   23   12   11   11    2   18   19   13   14    5 |     3    3    3    3  ---    2    3  ---  ---  ---     2
  30  |    6    9    6    4    8    2    9   11    7    7    3 |     3    3    3    3  ---    3    3  ---  ---  ---     2
  31  |    9   14   12   11   12    4   13   12   11   12    4 |     3    5    3    5  ---    3    2  ---  ---  ---     3
  32  |    8    9    6    6    9    4   11   10    9    9    3 |     3    5    3    3  ---    2    3  ---  ---  ---     2
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |   10   15   11   11   17    4   12   12   10   12      |T    3    5    3    3  ---    3    3  ---  ---  ---     2
 WRMS |    9   15   11   10   16    4   12   11    9   12      |NE   3    3    3    3  ---    2    2  ---  ---  ---     2
 MEDI |    9   12   10   11   13    4   11   11   10   10      |MD   3    4    3    3  ---    3    3  ---  ---  ---     2

Table 3.1940.2   GPS week: 1940   Day: 2   MJD: 57826.000                            

        Weighted Average                                            Orbit Dynamics (7 days)
 PRN  |  cod  emr  esa  gfz  grg  igr  jpl  mit  ngs  sio  IGS |   cod  emr  esa  gfz  grg  igr  jpl  mit  ngs  sio   IGS
------+--------------------------------------------------------+---------------------------------------------------------
   1  |    7   11    7    6   10    5   11   10    5    8    3 |     5    5    4    4  ---    4    4  ---  ---  ---     2
   2  |   11   13   11   14   17    7   13   14   10   17    5 |     5    4    5    5  ---    4    4  ---  ---  ---     3
   3E |   14   10   20    7   20    4   14    8    8    8    4 |     5    5    5    5  ---    4    4  ---  ---  ---     3
  X4E |    1  ---  ---  ---  ---   99  ---  ---  ---  ---    0 |     9  ---  ---  ---  ---   16  ---  ---  ---  ---     9
   5E |   13   13    6   11   22    4   15   10   12    9    4 |     4    6    4    4  ---    4    4  ---  ---  ---     3
   6  |   11    8    7    6    8    4   10   11    7   11    3 |     5    5    4    4  ---    4    4  ---  ---  ---     2
   7  |    9   13   13    9   10    5   12   11    9   14    4 |     4    4    5    4  ---    4    4  ---  ---  ---     2
   8  |    8   11    8    7    8    5   12   11    8    5    3 |     5    7    5    4  ---    4    4  ---  ---  ---     2
   9  |    9   11    8    7    8    6   13   10    8    7    3 |     4    5    5    4  ---    4    4  ---  ---  ---     2
  10E |   13   12   20    6   13    3   11   12    6   11    4 |     4    6    5    5  ---    4    4  ---  ---  ---     3
  11  |    8   11   15    8   11    5   13   11    6    9    3 |     4    4    5    4  ---    3    4  ---  ---  ---     2
  12E |   10   26    8   15   24    4   24   11   10   12    5 |     4    9    5    5  ---    5    5  ---  ---  ---     4
  13  |    9   18   10   11   13    2   13   12    8   14    4 |     4    6    4    4  ---    4    4  ---  ---  ---     2
  14  |   11   13   13   13   14    5   11   11   10   17    4 |     4    5    4    4  ---    4    3  ---  ---  ---     2
  15  |    9   15   10   12   16    3   14   14    9   13    4 |     4    5    3    4  ---    4    4  ---  ---  ---     2
  16E |   13   24    8   13   17    5   14   10   10   15    5 |     4   10    4    5  ---    4    5  ---  ---  ---     3
  17  |   16   16   11   14   13    5   14   13   11   14    5 |     6    6    4    4  ---    4    4  ---  ---  ---     2
  18E |   15   24    6   11   11    4   14   17    7   11    5 |     4    5    5    6  ---    4    4  ---  ---  ---     3
  19  |   15   21   12   18   15    4   17   15   10   18    5 |     5    6    6    6  ---    4    4  ---  ---  ---     2
  20E |   19   17    7   14   19    5    9   13    7   12    5 |     5   10    5    5  ---    4    5  ---  ---  ---     4
  21  |   14   14   10   11   13    4   13   15   10   16    5 |     4    5    4    4  ---    4    3  ---  ---  ---     2
  22E |   15   11    6    8   15    4   10   10   12    8    4 |     4    5    4    4  ---    4    4  ---  ---  ---     2
  23  |   10   28   13   12   10    6   16   14   14   19    5 |     5    4    5    5  ---    4    4  ---  ---  ---     2
  24  |   13   11    8    7   13    4   11    9    7   13    3 |     7    5    4    4  ---    4    4  ---  ---  ---     2
  25E |   10   11   16    8   18    5    9   11    5    8    4 |     5    6    6    6  ---    5    5  ---  ---  ---     4
  26E |   12   20   19   10   20    6   14    6    9   13    5 |     4   15    6    6  ---    5    5  ---  ---  ---     4
  27  |    7    8    7    9    7    5   11   10    6    6    2 |     5    5    4    4  ---    4    4  ---  ---  ---     2
  28E |    9   12    9   10   20    6   10   18    8   10    4 |     5    5    6    5  ---    4    5  ---  ---  ---     3
  29  |   13   27   10   15    9    4   21   15    8   12    5 |     4    4    4    4  ---    4    3  ---  ---  ---     2
  30  |   10    9   10    7   11    3    8   10    5   11    3 |     4    4    4    4  ---    4    4  ---  ---  ---     2
  31  |    9   13   12   14   16    5   14   12    9   15    4 |     4    6    4    5  ---    4    4  ---  ---  ---     3
  32  |    9    9    6    6    8    3    7   12    5   12    3 |     4    5    4    4  ---    4    4  ---  ---  ---     2
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |   12   16   11   11   14    5   13   12    9   12      |T    4    5    4    4  ---    4    4  ---  ---  ---     2
 WRMS |   11   16   11   10   14    5   13   12    8   11      |NE   4    5    4    4  ---    3    3  ---  ---  ---     2
 MEDI |   10   13   10   10   13    5   13   11    8   12      |MD   4    5    4    4  ---    4    4  ---  ---  ---     2

Table 3.1940.3   GPS week: 1940   Day: 3   MJD: 57827.000                            

        Weighted Average                                            Orbit Dynamics (7 days)
 PRN  |  cod  emr  esa  gfz  grg  igr  jpl  mit  ngs  sio  IGS |   cod  emr  esa  gfz  grg  igr  jpl  mit  ngs  sio   IGS
------+--------------------------------------------------------+---------------------------------------------------------
   1  |    6   11    8    7   12    3    9    8    7    9    3 |     5    5    5    5  ---    5    5  ---  ---  ---     2
   2  |    8   14   11   12   14    4   10   12   13   17    4 |     5    6    6    5  ---    5    4  ---  ---  ---     2
   3E |   11    9   17    8   15    3    9    7    8    8    4 |     5    6    6    5  ---    5    6  ---  ---  ---     3
  X4E |    1  ---  ---  ---  ---   29  ---  ---  ---  ---    0 |     8  ---  ---  ---  ---    8  ---  ---  ---  ---     7
   5E |    8   17    7   13   20    5   12    9   10   17    4 |     5   10    5    5  ---    5    5  ---  ---  ---     3
   6  |    7    9    7    9    8    5   11    6    8   12    3 |     5    6    5    5  ---    5    5  ---  ---  ---     2
   7  |    9   11   13   10   12    4   11   10   10   16    4 |     5    5    6    5  ---    5    5  ---  ---  ---     2
   8  |    8   11    7   11   11    4   10   11    5    5    3 |     5    7    5    5  ---    5    5  ---  ---  ---     2
   9  |    7    8    7    7    9    5   10    6    6    8    2 |     5    6    6    5  ---    5    6  ---  ---  ---     2
  10E |   15   15   21    7   21    5   10    9    6   14    5 |     5    7    6    6  ---    5    5  ---  ---  ---     3
  11  |    6   14   18   10   10    4   10   10    8   10    4 |     5    5    5    5  ---    4    4  ---  ---  ---     2
  12E |   11   23    9   17   22    4   22   12   13   10    5 |     5    9    6    6  ---    5    6  ---  ---  ---     3
  13  |   11   16   10   11   14    4   13   11   10   16    4 |     5    7    5    5  ---    5    5  ---  ---  ---     2
  14  |   11   13   12   15   16    5   10   11    8   18    5 |     5    6    5    5  ---    5    5  ---  ---  ---     2
  15  |   11   14   10   12   17    4   17   13   10   12    4 |     5    6    5    5  ---    5    5  ---  ---  ---     2
  16E |   14   24    9   13   13    8   15   11   12    8    5 |     5   10    5    6  ---    5    5  ---  ---  ---     3
  17  |    8   14   11   12   14    4   12   10    9   14    4 |     6    6    5    5  ---    5    5  ---  ---  ---     2
  18E |   16   21    7   14   21    4   12   13   10   14    5 |     5    5    5    6  ---    5    5  ---  ---  ---     3
  19  |    8   19   12   15   14    4   13   12   10   16    5 |     6    6    6    6  ---    5    5  ---  ---  ---     2
  20E |   15   16    6   14   28    4   11   13   10   13    5 |     6    9    6    6  ---    5    6  ---  ---  ---     3
  21  |   13   10   11   12   16    4    9   14   10   16    5 |     6    5    5    5  ---    5    4  ---  ---  ---     2
  22E |    9   12    8    8   16    4    8    8    7    8    3 |     6    6    5    6  ---    5    5  ---  ---  ---     3
  23  |   11   25   10   12   13    6   16   17   11   18    5 |     5    6    6    5  ---    5    5  ---  ---  ---     2
  24  |    9   11    7    8   12    4    9   10    7   15    3 |     6    6    5    5  ---    5    5  ---  ---  ---     2
  25E |    9   11   16    8   18    4   10   11    8   12    4 |     6    6    6    7  ---    5    6  ---  ---  ---     4
  26E |   16   15   18   10   20    5   11    5    9   10    5 |     6   13    7    7  ---    6    6  ---  ---  ---     4
  27  |    8    9    8    8    8    4    8   10    9    8    3 |     5    6    5    5  ---    5    5  ---  ---  ---     2
  28E |    7   12    7    7   22    5   10   15    9   10    4 |     5    6    6    6  ---    5    5  ---  ---  ---     3
  29  |   11   23   10   13   11    4   18   14   12   12    5 |     5    5    5    5  ---    5    5  ---  ---  ---     2
  30  |    6    8    6    7   12    3    9    9    5    8    2 |     5    5    5    5  ---    5    5  ---  ---  ---     2
  31  |   12   14   12   13   18    5   12   12   10   15    5 |     5    6    5    5  ---    5    5  ---  ---  ---     2
  32  |    9   11    5    8   12    3    7    9    4    9    3 |     5    6    5    5  ---    5    5  ---  ---  ---     2
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |   10   15   11   11   16    4   12   11    9   13      |T    5    6    5    5  ---    5    5  ---  ---  ---     2
 WRMS |   10   15   11   11   15    4   12   11    8   11      |NE   5    5    5    5  ---    4    4  ---  ---  ---     2
 MEDI |    9   14   10   11   14    4   10   11    9   12      |MD   5    6    5    5  ---    5    5  ---  ---  ---     2

Table 3.1940.4   GPS week: 1940   Day: 4   MJD: 57828.000                            

        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    9    5    8   14    3    7    7    5    9    3 |     5    6    6    5  ---    5    5  ---  ---  ---     2
   2  |   11   12   12   12   13    5   11   12    9   15    4 |     6    7    6    6  ---    5    5  ---  ---  ---     2
   3E |   14    8   20    8   32    5   10    8    6    8    5 |     6    7    6    6  ---    6    6  ---  ---  ---     3
  X4E |    1  ---  ---  ---  ---   20  ---  ---  ---  ---    0 |     7  ---  ---  ---  ---    8  ---  ---  ---  ---     4
   5E |    8   13    9   13   25    5   13    9    7    9    4 |     6    9    6    6  ---    6    6  ---  ---  ---     3
   6  |   13    7    8    7   10    4    8   11    5   11    3 |     6    6    6    5  ---    5    6  ---  ---  ---     2
   7  |    9   14   12   11   13    5   13   11    9   14    4 |     6    6    6    6  ---    5    5  ---  ---  ---     2
   8  |    8   10    7   10    8    3   11   11   10    7    3 |     6    7    6    6  ---    5    6  ---  ---  ---     2
   9  |    9    9    7    9   10    5   10    8    6    7    3 |     5    6    6    6  ---    6    6  ---  ---  ---     2
  10E |   14   13   22    6   22    5    8    8    6   11    5 |     6    7    6    6  ---    6    6  ---  ---  ---     3
 X11  |    9   11  ---   10   16    8   12    7    7  ---    4 |     5    6  ---    5  ---    5    5  ---  ---  ---     2
  12E |   10   28   10   13   20    7   23   10    9    9    5 |     6   11    7    7  ---    6    6  ---  ---  ---     4
  13  |   10   15   11   12   15    6   13   10   10   13    4 |     6    7    5    6  ---    5    5  ---  ---  ---     2
  14  |   14   12   14   12   11    4    9   11    9   18    5 |     6    6    6    5  ---    5    5  ---  ---  ---     2
  15  |   10   16   11    8   12    4   15   12    7   11    4 |     5    7    5    5  ---    5    5  ---  ---  ---     2
  16E |   13   22    8   15   19    4   12   10    9    8    5 |     6   10    6    6  ---    5    6  ---  ---  ---     2
  17  |    7   16   11   11   15    5   14   12    7   12    4 |     6    6    5    5  ---    5    5  ---  ---  ---     2
  18E |   12   24    7   11   18    3   14   14    9   14    5 |     6    6    6    6  ---    5    6  ---  ---  ---     3
  19  |   10   18   12   13   18    3   16   14    9   14    5 |     6    6    6    6  ---    5    5  ---  ---  ---     2
  20E |   15   19    9   14   21    5   12   11    9    9    5 |     7    7    6    6  ---    5    6  ---  ---  ---     3
  21  |   13   12   11   13   16    5   11   15   10   20    5 |     6    6    6    6  ---    5    5  ---  ---  ---     2
  22E |   14    7    7    9   26    4    9    9    7   10    4 |     6    6    6    6  ---    5    6  ---  ---  ---     3
  23  |   10   25   12   12   13    6   17   14   10   18    5 |     6    7    6    5  ---    5    6  ---  ---  ---     2
  24  |    6    8    8    5   11    6   10    7    6    9    2 |     6    6    6    5  ---    6    6  ---  ---  ---     2
  25E |    7   13   16    6   17    6    9    9    6    9    4 |     6    8    7    7  ---    6    6  ---  ---  ---     3
  26E |   17   14   20   12   26    5    9    5    6    9    5 |     7   11    8    7  ---    6    6  ---  ---  ---     3
  27  |    7    9    6   11    8    3   10   10    7    7    3 |     6    6    5    5  ---    5    5  ---  ---  ---     2
  28E |    7   12    7    9   23    6   11   15    7   10    4 |     6    6    7    6  ---    6    6  ---  ---  ---     3
  29  |   14   24   11   12    9    5   18   14    9   13    5 |     5    5    5    6  ---    5    5  ---  ---  ---     2
  30  |    8    9    6    7   10    4   10   10    6    9    3 |     6    6    6    5  ---    5    5  ---  ---  ---     2
  31  |   10   15   12   11   16    5   14   10    9   13    4 |     6    6    5    6  ---    5    5  ---  ---  ---     2
  32  |    6   11    7    4    8    5    8    8    6   10    3 |     6    6    5    5  ---    5    6  ---  ---  ---     2
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |   11   15   11   10   17    5   12   11    8   12      |T    5    6    5    5  ---    5    5  ---  ---  ---     2
 WRMS |   10   15   11   11   16    5   12   11    7   11      |NE   5    6    5    5  ---    5    5  ---  ---  ---     2
 MEDI |   10   13   10   11   15    5   11   10    7   10      |MD   6    6    6    6  ---    5    6  ---  ---  ---     2

Table 3.1940.5   GPS week: 1940   Day: 5   MJD: 57829.000                            

        Weighted Average                                            Orbit Dynamics (7 days)
 PRN  |  cod  emr  esa  gfz  grg  igr  jpl  mit  ngs  sio  IGS |   cod  emr  esa  gfz  grg  igr  jpl  mit  ngs  sio   IGS
------+--------------------------------------------------------+---------------------------------------------------------
   1  |    9    7    5    8   11    3    8    7   10    9    3 |     4    5    5    5  ---    4    4  ---  ---  ---     2
   2  |    9   11   13   15   16    5   13   14   10   17    5 |     4    5    5    5  ---    4    4  ---  ---  ---     2
   3E |   13    8   19    8   24    7   13    9   10   10    5 |     5    7    6    6  ---    5    6  ---  ---  ---     3
  X4E |    2  ---  ---  ---  ---   28  ---  ---  ---  ---    0 |     8  ---  ---  ---  ---    6  ---  ---  ---  ---     7
   5E |    8   17    8   11   17    4   15   11    9   11    4 |     5    8    5    5  ---    5    5  ---  ---  ---     3
   6  |    6    7    9    6   10    4   14   13    6   11    3 |     5    5    5    4  ---    4    5  ---  ---  ---     2
   7  |   10   12   10   14   12    3   13   11   10   17    4 |     5    5    5    5  ---    4    5  ---  ---  ---     2
   8  |    8    8    5   10    7    4   11    8   10   10    3 |     5    6    5    5  ---    4    5  ---  ---  ---     2
   9  |    7   11    6    9    8    4   10   10    7   10    3 |     5    6    5    5  ---    5    5  ---  ---  ---     2
  10E |   10   12   19    6   17    4    8    7    9   10    4 |     5    6    5    5  ---    5    5  ---  ---  ---     3
  11  |    6   10   15    9   10    3   11    6   10    9    3 |     4    5 9999    4  ---    4    4  ---  ---  ---     2
  12E |   14   22    8   14   23    8   20   14   10   12    5 |     5   10    6    6  ---    5    6  ---  ---  ---     4
  13  |    9   11   10   14   17    4   12   11   10   15    4 |     4    6    4    5  ---    4    4  ---  ---  ---     2
  14  |   11    9    9   12   14    4   13   13   11   17    4 |     5    6    5    4  ---    4    4  ---  ---  ---     2
  15  |    9   16   11    9   16    4   16   17   10   16    5 |     5    6    4    5  ---    4    4  ---  ---  ---     2
  16E |   20   22    9   16   19    6   12   11   13   11    5 |     5    9    5    5  ---    4    5  ---  ---  ---     2
  17  |    9   13   11   12   15    3   14   12    9   15    4 |     5    6    5    4  ---    4    5  ---  ---  ---     2
  18E |    9   23    4   13   18    3   16   11    9   17    5 |     5    5    5    6  ---    5    5  ---  ---  ---     3
  19  |    8   17   14   12   13    3   15   14   12   17    5 |     5    6    6    5  ---    4    4  ---  ---  ---     2
  20E |   16   18    9   15   19    5   15   16    9   13    5 |     6    6    5    5  ---    4    4  ---  ---  ---     2
  21  |   13    9    9   12   13    4   11   16   11   20    5 |     5    5    5    5  ---    4    4  ---  ---  ---     2
  22E |   15   13    6    9   17    6   11   10    9   10    4 |     5    6    5    4  ---    4    5  ---  ---  ---     3
  23  |   10   24    8   14   15    5   16   16   14   20    5 |     4    6    6    5  ---    4    5  ---  ---  ---     2
  24  |    5    9    7    8   13    4    9    9    7   11    3 |     5    6    5    4  ---    4    5  ---  ---  ---     2
  25E |   14   10   17    7   22    5    9    9    7   11    4 |     5    6    5    6  ---    5    5  ---  ---  ---     3
  26E |   18   13   20    8   27    4    8    6   11   15    6 |     6   10    6    5  ---    5    5  ---  ---  ---     3
  27  |    9    8    5    8    9    3    9    9   10   12    3 |     5    5    5    4  ---    4    5  ---  ---  ---     2
  28E |   13   12    5   10   31    5   11   14   13    9    5 |     5    5    5    5  ---    4    5  ---  ---  ---     2
  29  |   12   24    9   13   11    3   19   13    9   15    5 |     4    5    4    5  ---    4    4  ---  ---  ---     2
  30  |    4   10    6    6   12    2   10    9    6    8    3 |     5    5    5    5  ---    4    5  ---  ---  ---     2
  31  |   10   12   12   15   11    5   13   12   12   16    4 |     5    5    4    6  ---    4    4  ---  ---  ---     2
  32  |    7    9    6    6    8    4   10    7   11    9    3 |     5    6    5    5  ---    4    5  ---  ---  ---     2
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |   11   14   11   11   16    4   13   12   10   13      |T    4    6    5    4  ---    4    4  ---  ---  ---     2
 WRMS |    9   14   11   11   14    4   13   11    9   13      |NE   4    5    4    4  ---    4    4  ---  ---  ---     2
 MEDI |    9   12    9   10   15    4   12   11   10   12      |MD   5    6    5    5  ---    4    5  ---  ---  ---     2

Table 3.1940.6   GPS week: 1940   Day: 6   MJD: 57830.000                            

        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    8    6    9    9    3    7    6    6    8    2 |     3    3    3    3  ---    3    3  ---  ---  ---     2
   2  |   10   13   12   12   11    3   11   14   12   16    4 |     3    3    3    3  ---    3    3  ---  ---  ---     1
   3E |    9    9   16    8   22    4   11    8    7    9    4 |     4    6    5    5  ---    4    6  ---  ---  ---     3
  X4E |    2  ---  ---  ---  ---   28  ---  ---  ---  ---    0 |     7  ---  ---  ---  ---    4  ---  ---  ---  ---     7
   5E |    6   13    9    9   20    3   15   12   10    8    4 |     5    6    3    4  ---    4    4  ---  ---  ---     2
   6  |   11    8    7    7   10    3   11   14    5   10    3 |     3    4    3    3  ---    3    3  ---  ---  ---     2
   7  |   11   13    9   12   15    3   12   10    9   15    4 |     3    3    3    3  ---    3    3  ---  ---  ---     1
   8  |    9   11    6   11    9    3   11   10    9    7    3 |     3    4    4    3  ---    3    4  ---  ---  ---     2
   9  |   10    8    5    8   10    3    8   10    5    8    3 |     4    5    4    4  ---    4    4  ---  ---  ---     2
  10E |   12    9   18    7   17    3    8    8    6    8    4 |     4    5    4    4  ---    4    4  ---  ---  ---     3
  11  |    6   10   15   10    9    4    9    5    6    5    3 |     3    3 9999    3  ---    3    3  ---  ---  ---     1
  12E |    8   27    9   12   28    5   21   14   12    9    5 |     3    7    4    4  ---    4    4  ---  ---  ---     3
  13  |   11   15   12   11   15    3   12   12   13   14    4 |     3    4    3    3  ---    3    4  ---  ---  ---     2
  14  |   13   11   11   15   17    4   12   13   10   18    5 |     3    4    4    3  ---    3    3  ---  ---  ---     1
  15  |   11   15   12   11   17    5   13   18   11   14    5 |     4    4    3    4  ---    3    4  ---  ---  ---     2
  16E |   15   22    8   13   18    4   14   13   10   11    5 |     4    5    4    4  ---    4    4  ---  ---  ---     3
  17  |   10   15   11   12   14    3   12   13    8   12    4 |     4    4    3    3  ---    3    3  ---  ---  ---     2
  18E |   12   21    7   11   14    4   14   13    7   11    4 |     4    4    4    4  ---    4    4  ---  ---  ---     3
  19  |   11   18   12   14   11    5   17   15   10   16    5 |     3    4    4    4  ---    3    3  ---  ---  ---     1
  20  |   12   17    7   11   19    5   10   12    9    9    4 |     4    5    4    4  ---    3    3  ---  ---  ---     2
  21  |   14   10   12   11   12    4    9   14   10   16    4 |     4    3    3    3  ---    3    3  ---  ---  ---     1
  22E |   13   10    9    8   11    3    8   11    9    8    3 |     3    4    3    3  ---    3    3  ---  ---  ---     2
  23  |    9   24   10   14   16    9   15   17   11   18    5 |     3    4    4    4  ---    3    3  ---  ---  ---     1
  24  |    5    9    9    8   12    5    8   11   10    7    3 |     3    4    3    3  ---    3    3  ---  ---  ---     1
  25E |    9   12   15    9   18    3   11    8    7    8    4 |     4    5    4    4  ---    3    4  ---  ---  ---     2
  26E |   17   15   18    9   29    3   10    6    7   10    5 |     4    8    5    4  ---    4    4  ---  ---  ---     3
  27  |    8    8    6    8    8    3    7    9    8    6    3 |     4    4    3    3  ---    3    4  ---  ---  ---     2
  28E |    8   11    6   10   17    4   10   13    7    8    3 |     3    4    4    4  ---    3    4  ---  ---  ---     2
  29  |   10   25   12   14   10    5   17   13   13   13    5 |     3    3    3    4  ---    3    3  ---  ---  ---     2
  30  |    7    9    6    6   10    3    9    8    5    6    2 |     3    3    3    4  ---    3    3  ---  ---  ---     1
  31  |   10   13   12   13   15    4   13   13   12   15    4 |     3    4    3    4  ---    3    3  ---  ---  ---     1
  32  |    8    9    6    7    7    3    7    7    6    9    3 |     4    5    4    4  ---    3    4  ---  ---  ---     2
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |   10   14   11   11   15    4   12   12    9   11      |T    3    4    3    3  ---    3    3  ---  ---  ---     2
 WRMS |   10   14   11   11   14    4   12   11    8   12      |NE   3    3    3    3  ---    3    3  ---  ---  ---     1
 MEDI |   10   12    9   11   14    3   11   12    9    9      |MD   3    4    3    4  ---    3    3  ---  ---  ---     2



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 4.1940   GPS week: 1940   MJD: 57824.0-57830.0

CENT| CLK EPO  |        BRUX       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3064 |U    8     7    18 |U   10    13    36 |U   10    10    22 |
emr | emr 2973 |    10     8    22 |U   10    13    38 |    10    11    23 |
esa | esa 2962 |     8     8    21 |U   10    14    36 |    10     9    22 |
gfz | gfz 2972 |U    8     8    18 |U   10    14    37 |U   10    10    25 |
grg | grg 2971 |U    7     7    18 |U   12    15    39 |    10    12    21 |
igr | igr 2973 |     8     8    19 |    10    13    35 |    10    10    22 |
igs | igs 2973 |     5     5    12 |     9    12    33 |     8    10    19 |
jpl | jpl 2976 |     9     8    21 |    10    15    37 |U   10    11    22 |
mit | mit 2976 |U    5     5    13 |U   12    15    40 |U    8    10    21 |



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 5.1940.0   GPS week: 1940   Day: 0   MJD: 57824.0

CENT| CLK EPO  |        BRUX       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3057 |     5     6    12 |     8     6    39 |     6     7    17 |
emr | emr 2976 |     8     7    19 |     9     8    42 |     7     7    21 |
esa | esa 2976 |     6     7    16 |     8     7    41 |     6     6    20 |
gfz | gfz 2973 |     6     7    13 |     8     7    37 |     6     7    22 |
grg | grg 2975 |     5     7    13 |    13     9    46 |     7    10    20 |
igr | igr 2976 |     6     6    14 |     8     7    36 |     6     6    18 |
igs | igs 2976 |     6     6    13 |     8     6    39 |     6     8    20 |
jpl | jpl 2976 |     6     7    17 |     8     8    36 |     7     8    19 |
mit | mit 2976 |     6     6    13 |    18    21    70 |     7     9    20 |

Table 5.1940.1   GPS week: 1940   Day: 1   MJD: 57825.0

CENT| CLK EPO  |        BRUX       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3064 |     6     5    14 |     7     6    21 |     9     7    17 |
emr | emr 2976 |     8     5    19 |     7     9    24 |     9     9    21 |
esa | esa 2976 |     6     6    16 |     7     7    22 |     9     7    18 |
gfz | gfz 2976 |     6     6    13 |     7     5    22 |    10     9    24 |
grg | grg 2976 |     5     4    13 |    13    12    37 |    11    11    20 |
igr | igr 2976 |     5     6    15 |     7     5    21 |     9     7    19 |
igs | igs 2976 |     4     4    11 |     7     5    20 |     8     9    17 |
jpl | jpl 2976 |     5     5    17 |     7     7    22 |     9     8    18 |
mit | mit 2976 |     5     6    12 |     8     5    26 |     9     9    19 |

Table 5.1940.2   GPS week: 1940   Day: 2   MJD: 57826.0

CENT| CLK EPO  |        BRUX       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3069 |     9     7    18 |     9    11    33 |     9    10    16 |
emr | emr 2976 |    10     8    22 |     8    12    37 |     9    10    20 |
esa | esa 2976 |     9     8    20 |     8    13    34 |     9    10    18 |
gfz | gfz 2976 |     9     8    17 |     9    12    37 |     9    11    20 |
grg | grg 2972 |     8     7    17 |    13    21    31 |    10    14    18 |
igr | igr 2976 |     8     8    18 |     9    11    34 |     9    10    16 |
igs | igs 2976 |     7     6    15 |     8    11    30 |     7    12    16 |
jpl | jpl 2976 |     9     8    20 |    10    15    35 |     9    12    17 |
mit | mit 2976 |     6     5    15 |    10    12    37 |     8    10    17 |

Table 5.1940.3   GPS week: 1940   Day: 3   MJD: 57827.0

CENT| CLK EPO  |        BRUX       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3070 |    10     8    22 |     9    13    35 |    14    13    29 |
emr | emr 2976 |    11    10    27 |    10    14    36 |    14    15    30 |
esa | esa 2976 |    10     9    26 |     9    16    37 |    13    13    31 |
gfz | gfz 2976 |    10     9    23 |     9    17    39 |    14    13    33 |
grg | grg 2976 |     7     6    17 |    10    13    34 |    11    14    26 |
igr | igr 2976 |    10     9    24 |    10    15    36 |    14    13    30 |
igs | igs 2976 |     5     4    13 |    10    13    28 |    10    13    26 |
jpl | jpl 2976 |    10     9    26 |    12    18    36 |    14    15    30 |
mit | mit 2976 |     6     4    14 |    12    21    28 |    10    15    30 |

Table 5.1940.4   GPS week: 1940   Day: 4   MJD: 57828.0

CENT| CLK EPO  |        BRUX       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3052 |    11    11    23 |     9    12    34 |    13    12    27 |
emr | emr 2956 |    12    11    27 |     9    11    33 |    12    12    27 |
esa | esa 2880 |    11    12    29 |    10    12    34 |    12    10    24 |
gfz | gfz 2956 |    12    11    25 |    11    13    38 |    12    11    29 |
grg | grg 2954 |     5     5    12 |     7     8    31 |     8     8    19 |
igr | igr 2956 |    11    12    25 |     9    12    35 |    12    11    26 |
igs | igs 2956 |     5     4    11 |     7     9    30 |     7     6    16 |
jpl | jpl 2976 |    13    11    28 |    10    12    34 |    12    11    25 |
mit | mit 2976 |     5     5    12 |     8    11    32 |     8     7    20 |

Table 5.1940.5   GPS week: 1940   Day: 5   MJD: 57829.0

CENT| CLK EPO  |        BRUX       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3069 |     9     9    18 |    13    19    38 |    11    12    24 |
emr | emr 2976 |    11     8    23 |    11    19    36 |    11    13    20 |
esa | esa 2976 |    10     9    24 |    12    19    38 |    10    11    20 |
gfz | gfz 2974 |    10     9    21 |    14    20    40 |    10    11    24 |
grg | grg 2972 |     8     6    15 |    16    22    44 |    11    16    20 |
igr | igr 2976 |     9     9    21 |    14    20    38 |    10    12    22 |
igs | igs 2976 |     6     6    13 |    12    17    32 |     9    12    15 |
jpl | jpl 2976 |    10     9    22 |    13    20    37 |    10    11    22 |
mit | mit 2976 |     6     6    13 |    14    17    38 |    10    13    19 |

Table 5.1940.6   GPS week: 1940   Day: 6   MJD: 57830.0

CENT| CLK EPO  |        BRUX       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3070 |     7     6    16 |    13    21    56 |    10     9    25 |
emr | emr 2976 |     8     6    20 |    14    21    55 |     9     9    25 |
esa | esa 2976 |     7     6    19 |    14    22    47 |     9     9    25 |
gfz | gfz 2976 |     7     6    17 |    14    22    49 |    10     9    27 |
grg | grg 2976 |    13    16    39 |    13    21    48 |    10    12    24 |
igr | igr 2976 |     7     6    18 |    13    22    48 |    10     9    26 |
igs | igs 2976 |     5     4    10 |    14    20    54 |     8     8    22 |
jpl | jpl 2976 |     7     6    20 |    12    21    56 |    10    10    25 |
mit | mit 2976 |     4     4    10 |    14    21    53 |     8     8    24 |


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 6.1940   GPS week: 1940   MJD: 57824.500-57830.500

                                                         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     -12      74       2      0 |       7     13
            |      14      11      37      64      7 |       1
emr   uuuuu |      22      11     -55     -51      3 |     102    105
            |      11      16      89      29     23 |      12
esa   uuuuu |      -5       7     -11     116     -2 |      23     25
            |       9       7      39      37      5 |       1
gfz   uuuuu |      -8       5       9      20      2 |      21     24
            |      15      22      98      72      3 |       2
grg   uuuuu |     -25      10      12    -126      2 |      -2     10
            |      17      11      36      63      4 |       2
igr   xxxxx |      -1      -3      37     -20      2 |      -2     12
            |      15       9      39      28      5 |       3
irf   xxxxx |       8      -5       7      42     -5 |      -2     11
            |       7       8      26      26      5 |       1
jpl   xxxxx |      -5     -26      51     -62      4 |      33     37
            |      14      25      67      40      7 |       5
mit   uuuuu |      24      -3      -1      87    -10 |      26     29
            |      11      13      45      63      6 |       2
ngs   uuuuu |     -10     -40      25     -63     -1 |      11     15
            |      28      39     105      91      5 |       2
sio   uuuux |      25      48     -99     -42    -21 |      94     96
            |      16      21      72      62     10 |       7


Table 7.1940.0   GPS week: 1940   Day: 0   MJD: 57824.500

                                                         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 |     -45     -30      13     -20     -4 |       7     12
emr   uuuuu |      17      -1    -181     -48     33 |      82     90
esa   uuuuu |       0       3     -23      91     -3 |      22     25
gfz   uuuuu |      12     -25     100      50     -1 |      18     22
grg   uuuuu |       4      23      76     -82      3 |      -5     12
igr   xxxxx |       1     -16     -27     -35      0 |      -5     11
irf   xxxxx |      11     -13      41      90    -10 |       0     11
jpl   xxxxx |      -2     -15     -33       7     12 |      27     33
mit   uuuuu |      34     -17      53     210    -16 |      29     31
ngs   uuuuu |     -27      21      -7    -174      3 |       8     13
sio   uuuux |      46      34     -85      81    -23 |     101    103

Table 7.1940.1   GPS week: 1940   Day: 1   MJD: 57825.500

                                                         AC LOD  AC LOD
CENT  FLAG  |   Xpole   Ypole     Xrt     Yrt    LOD |    BIAS  BIAS RMS
            |   [uas]   [uas]   [uas/d] [uas/d]  [us]|    [us]    [us]
------------+----------------------------------------+------------------
cod   uuuuu |      -8      -3      46      59     -5 |       8     12
emr   uuuuu |      33      16     -92     -90     23 |      90     95
esa   uuuuu |       7      17      13      90     -6 |      24     26
gfz   uuuuu |      -2     -14      93      15      0 |      20     22
grg   uuuuu |     -42       6     -33    -141      4 |      -4      9
igr   xxxxx |       3      -2      24     -66      5 |      -4     10
irf   xxxxx |      14      -9      20      32    -12 |       0     11
jpl   xxxxx |      15     -25      57     -52     -8 |      29     35
mit   uuuuu |      17      -4      29      79    -16 |      28     31
ngs   uuuuu |     -30     -18     -95     -99      3 |       9     13
sio   uuuux |      25       5      -7     -18    -30 |     101    103

Table 7.1940.2   GPS week: 1940   Day: 2   MJD: 57826.500

                                                         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 |     -13     -15     113      19     -9 |       8     13
emr   uuuuu |      29      -9    -156     -26      4 |      99    103
esa   uuuuu |     -16      -2      45      82    -12 |      24     26
gfz   uuuuu |     -17      -3      81      58      4 |      21     24
grg   uuuuu |     -16      10     -26    -189      8 |      -2     10
igr   xxxxx |      22       5      23      14     -6 |      -2     11
irf   xxxxx |      10     -14      34      58     -9 |      -1     11
jpl   xxxxx |     -15     -70      47    -105     10 |      31     36
mit   uuuuu |      27     -18      31     116    -14 |      28     30
ngs   uuuuu |      -9     -11     -98     -38      0 |      11     14
sio   uuuux |      32      57     -19     -80    -30 |     100    102

Table 7.1940.3   GPS week: 1940   Day: 3   MJD: 57827.500

                                                         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 |      -2      -2      98      86      1 |       6     12
emr   uuuuu |      36      -7      -7     -62     14 |     103    105
esa   uuuuu |      -7       1     -39      94     -2 |      22     25
gfz   uuuuu |     -34      40     -89    -127     -1 |      21     23
grg   uuuuu |     -24       5       6    -153     -1 |      -2     10
igr   xxxxx |     -21      -2      34     -28      7 |      -4     11
irf   xxxxx |       0      -4     -30      20     -4 |      -3     12
jpl   xxxxx |      -5     -28     -12     -35      0 |      34     38
mit   uuuuu |      11       9     -49      74     -8 |      26     29
ngs   uuuuu |       6     -74     125      23      2 |      10     14
sio   uuuux |      15      57    -110     -74    -27 |      96     98

Table 7.1940.4   GPS week: 1940   Day: 4   MJD: 57828.500

                                                         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      -3      61    -112      0 |       6     12
emr   uuuuu |       3      26      59     -38     -1 |     110    112
esa   uuuuu |       3      14      -7     182     -1 |      21     24
gfz   uuuuu |     -12      24    -149       2      2 |      21     23
grg   uuuuu |     -48      17      17    -205      1 |      -1     10
igr   xxxxx |      10      11      32     -23      6 |      -3     12
irf   xxxxx |      18       9       4      41      2 |      -4     11
jpl   xxxxx |     -28     -19      67    -102     -1 |      37     40
mit   uuuuu |      26      19      19      64     -2 |      24     27
ngs   uuuuu |       9     -91     119      57     -2 |      11     15
sio   uuuux |       7      67    -188     -95    -21 |      91     93

Table 7.1940.5   GPS week: 1940   Day: 5   MJD: 57829.500

                                                         AC LOD  AC LOD
CENT  FLAG  |   Xpole   Ypole     Xrt     Yrt    LOD |    BIAS  BIAS RMS
            |   [uas]   [uas]   [uas/d] [uas/d]  [us]|    [us]    [us]
------------+----------------------------------------+------------------
cod   uuuuu |      -8     -22     109      -6      6 |       6     12
emr   uuuuu |      18      30       8     -84    -30 |     115    116
esa   uuuuu |      -5       7     -74     135      1 |      22     25
gfz   uuuuu |       4      12     -21      40      8 |      22     24
grg   uuuuu |     -26      -9      25     -72     -3 |       0     10
igr   xxxxx |     -10      -4      80      12      4 |      -1     12
irf   xxxxx |       2      -6     -20      14     -1 |      -4     11
jpl   xxxxx |      -5      11      55     -83      8 |      35     37
mit   uuuuu |      39      -1     -63      15     -6 |      23     26
ngs   uuuuu |     -52     -49     149     -34     -4 |      12     16
sio   uuuux |      41      60    -188     -85    -10 |      87     89

Table 7.1940.6   GPS week: 1940   Day: 6   MJD: 57830.500

                                                         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 |     -24      -9      79     -13     11 |       9     15
emr   uuuuu |      20      23     -19     -12    -23 |     113    114
esa   uuuuu |     -18      12       9     137      6 |      25     27
gfz   uuuuu |      -8       3      49     101      2 |      26     28
grg   uuuuu |     -24      17      16     -39     -1 |       2     11
igr   xxxxx |     -14     -12      90     -14     -4 |       3     13
irf   xxxxx |      -1       5       3      37     -3 |      -1     11
jpl   xxxxx |       3     -39     175     -67      7 |      39     41
mit   uuuuu |      12     -10     -30      47     -5 |      24     27
ngs   uuuuu |      33     -58     -20    -176    -11 |      14     18
sio   uuuux |       7      54     -99     -22     -3 |      85     86



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