[IGSREPORT-24789] Wk 1915 IGS Final Orbits

IGS ACC acc at igs.org
Fri Oct 7 23:46:59 PDT 2016


Author:  AC Coordinator / GA MIT 

sum-file Version 2.0
Final IGS Orbit Combination - Week 1915   (Sep 18, 2016 - Sep 24, 2016)

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:

igs1915[0-6].sp3  IGS GPS ephemeris files in SP3 format.
igs1915[0-6].clk  IGS GPS satellite and station clocks in clock RINEX format.
igs1915[0-6].cls  IGS GPS clock combination summary report.
igs19157.erp      Earth Rotation Parameters (ERP) and their rates as well as
                  Universal Time (UT1-UTC) and Length Of Day (LOD) associated 
                  with IGS ephemerides.
igs19157.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  |  ALL   | 4
                0  |  COD   | KARR
                0  |  EMR   | HERS HERS
                0  |  ESA   | TIXI
                0  |  GFZ   | BJNM FAA1 BJNM FAA1
                0  |  GRG   | BOGT GLSV HOFN MAL2 SYOG ARTU BOGT GLSV SYOG
                1  |  ALL   | 4
                1  |  COD   | SYOG NRMD SYOG
                1  |  EMR   | YELL YELL
                1  |  ESA   | ASPA BRFT DRAG GMSD GRAZ HARB HYDE MAC1 MCIL NANO
                1  |  ESA   | NKLG REUN SSIA TLSE ASPA BRFT BRST DRAG GMSD GRAZ
                1  |  ESA   | HARB HYDE MAC1 MCIL NANO NKLG PBRI REUN SALU SEYG
                1  |  ESA   | SSIA TIXI TLSE
                1  |  GFZ   | ALBH BJNM DAEJ FAA1 GODE MAL2 ALBH BJNM DAEJ FAA1
                1  |  GFZ   | GODE MAL2 YSSK
                1  |  GRG   | GLSV KIRU MAS1 VILL FAA1 GLSV KIRU MAS1 VILL
                1  |  JPL   | 10 NKLG YELL
                1  |  MIT   | AUCK
                2  |  ALL   | 4
                2  |  COD   | BJNM BJNM SYOG YSSK
                2  |  EMR   | HERS FAIR HERS YELL
                2  |  ESA   | BAKE BRFT BRST CHTI DRAG FAA1 GMSD GRAZ GUAT HARB
                2  |  ESA   | HYDE MAC1 NANO SYOG BAKE BRFT BRST CHTI DRAG GMSD
                2  |  ESA   | GRAZ GUAT HARB HYDE MAC1 MAL2 NANO PBRI SCH2 SYOG
                2  |  GFZ   | BJNM GODE SYOG AUCK BJNM GODE MAL2
                2  |  GRG   | FAA1 GLSV KIRU MAS1 MAW1 DARW GLSV KIRU MAS1 MAW1
                2  |  GRG   | SYOG VILL
                3  |  ALL   | 4
                3  |  COD   | BJNM CRO1 FAA1 GLSV BJNM FAA1 GLSV
                3  |  EMR   | HERS
                3  |  ESA   | ASPA BRFT BRST CHTI DRAG GMSD GRAZ GUAT HYDE MAC1
                3  |  ESA   | MAL2 MCIL NANO NKLG REUN TLSE ASPA BJCO BRFT BRST
                3  |  ESA   | CHTI DRAG GMSD GRAZ GUAT HYDE MAC1 MAL2 MCIL NANO
                3  |  ESA   | NKLG PBRI REUN TLSE
                3  |  GFZ   | BJNM FAA1 GODE BJNM FAA1 GODE
                3  |  GRG   | ARTU CRO1 GLSV MAC1 SYOG ADIS ARTU COCO CRO1 DARW
                3  |  GRG   | GLSV MAC1 SYOG
                4  |  ALL   | 4
                4  |  COD   | KARR NRMD SYOG KARR
                4  |  EMR   | YELL
                4  |  ESA   | ASPA BRFT BRST CHTI DRAG FAA1 GMSD GRAZ GUAT HYDE
                4  |  ESA   | MAC1 MAW1 MCIL NANO REUN TLSE ASPA BJCO BRFT BRST
                4  |  ESA   | CHTI DRAG GMSD GRAZ GUAT HYDE MAC1 MAW1 MCIL NANO
                4  |  ESA   | PBRI REUN SALU TLSE
                4  |  GFZ   | FAA1 GODE YAR2 FAA1 GODE YAR2
                4  |  GRG   | GLSV MAW1 FAA1 GLSV MAW1
                5  |  ALL   | 4
                5  |  COD   | CAS1 SYOG TWTF CAS1 KARR SYOG
                5  |  EMR   | YAR2 HERS SFER YAR2
                5  |  ESA   | ASPA BRFT BRST CHTI DRAG FAA1 GMSD GRAZ GUAT HYDE
                5  |  ESA   | MAC1 MCIL NANO NKLG REUN TLSE ASPA BRFT BRST CHTI
                5  |  ESA   | DRAG FAA1 GMSD GRAZ GUAT HYDE MAC1 MAL2 MCIL NANO
                5  |  ESA   | NKLG PBRI REUN SALU TLSE UFPR
                5  |  GFZ   | GODE NRMD GODE NRMD
                5  |  GRG   | 5 5 GLSV SYOG GLSV MAL2 NAIN SYOG
                5  |  MIT   | TWTF TWTF
                6  |  ALL   | 4
                6  |  COD   | MAL2 MAL2 SYOG
                6  |  EMR   | GRAZ GRAZ HERS
                6  |  ESA   | BJNM BRFT BRST CHTI DRAG FAA1 GMSD GRAZ GUAT MAC1
                6  |  ESA   | MAL2 MCIL NANO REUN TLSE BJCO BJNM BRFT BRST CHTI
                6  |  ESA   | DRAG FAA1 GMSD GRAZ GUAT KOUC MAC1 MAL2 MCIL NANO
                6  |  ESA   | PBRI POVE REUN SEYG TLSE
                6  |  GRG   | GLSV FAA1 GLSV

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

 6. The following table lists all maneuvered satellites for this week. The
    solutions from COD and ESA, which modeled the maneuver, are used that day for
    combination, if available. An associated accuracy code of 0 (unknown) is given
    if only one AC is left (no redundancy). For the long arc evaluation the arc is
    split into two parts at the given maneuver epoch.
    
               PRN |    Date    | Ref. NANU
               ----+------------+----------
               G21 | 2016_09_22 | 2016065 
               G21 | 2016_09_23 | 2016065 

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

 8. Small rotations were applied to all the AC orbit and ERP values in order to
    align them to the current IGS reference frame. These RX, RY and RZ rotations
    were estimated in the IGS SINEX combination process, performed by the IGS
    Reference Frame Coordinator at the Institut Geographique National (IGN).
    Starting on 19-Aug-2012 (GPS Week 1702; MJD=56158), ACs began contributing
    products based on 1d SINEX integrations. As a result, the SINEX combinations
    are now done daily instead of weekly, and the associated daily rotations are
    applied here to the orbits and ERPs. The estimated 7 transformations, from
    which only the 3 rotations are applied to the orbit and ERP values, are:
    
            |     |    DX     DY     DZ      RX     RY     RZ     SCL
     Centre | Day |   [mm]   [mm]   [mm]   [uas]  [uas]  [uas]   [ppb]
     -------+-----+---------------------------------------------------
       COD  |   0 |    -.7   -1.5    -.8     -41     22      1     .46
       EMR  |   0 |   -1.0     .4    1.9      22    -25      4     .42
       ESA  |   0 |    -.6   -1.7   -1.7     -18    -15     70     .12
       GFZ  |   0 |     .2    -.7   -1.8     -37    -90    -40     .64
       GRG  |   0 |    1.0    2.1   -1.2     -60    -28   -162     .08
       JPL  |   0 |   -3.6   -4.7     .5      18     13     -3     .13
       MIT  |   0 |    1.6    4.7    3.4      -1     -4    -46     .62
       NGS  |   0 |   -1.7   -1.0     .4       9     -7    -53     .56
       SIO  |   0 |   -1.8   12.3   -3.1     -21    -34     32     .52

       COD  |   1 |    -.5    -.9   -1.4     -33     10     -2     .47
       EMR  |   1 |   -8.1  -13.8    9.9      29    -10      1     .33
       ESA  |   1 |     .3   -1.5   -2.0       8    -33     43     .16
       GFZ  |   1 |     .5     .2   -1.5     -26   -104    -34     .46
       GRG  |   1 |    7.9    1.9    7.0     -23    -48   -140     .02
       JPL  |   1 |   -1.4   -5.5   -1.9      26     64      6     .75
       MIT  |   1 |     .2    1.2    5.4       8      5    -39     .80
       NGS  |   1 |   -1.0    -.2    8.9     -28    -31    -13     .41
       SIO  |   1 |   -3.6    9.6   -3.3     -24     -7      3     .52

       COD  |   2 |    -.4   -1.7   -1.1     -47    -13    -19     .64
       EMR  |   2 |   -1.4   -1.9    1.9      37     -4      6     .59
       ESA  |   2 |    -.1   -2.0   -1.7      10    -19     22     .29
       GFZ  |   2 |     .4    -.7   -1.7     -36    -92    -31     .79
       GRG  |   2 |     .4   10.9  -12.5     -40    -14   -166     .09
       JPL  |   2 |   -6.2   -9.6    6.8     -10     50      4     .95
       MIT  |   2 |   -3.2     .9    4.6      29     -4    -48     .62
       NGS  |   2 |    -.6   -5.7    4.6     -20     -8    -40     .57
       SIO  |   2 |   -3.2    7.5   -8.0     -21     11     -6     .69

       COD  |   3 |    -.3   -2.2   -1.5     -56    -15     -7     .69
       EMR  |   3 |   -7.0   -3.8   10.9      42    -17     19     .61
       ESA  |   3 |    -.4   -1.6   -1.3      37    -37     50     .43
       GFZ  |   3 |     .1    -.5   -1.4     -27    -87    -24     .72
       GRG  |   3 |    4.1    1.5   16.3      -8      0   -107     .39
       JPL  |   3 |   -6.1   -9.4    6.1     -19     43    -26     .76
       MIT  |   3 |   -3.6     .9    6.7      40     11    -35     .68
       NGS  |   3 |   -5.2   -2.1   18.3     -56     -9    -62     .68
       SIO  |   3 |   -4.3    8.6   -2.6     -21     11     11     .59

       COD  |   4 |    -.5   -1.1   -1.3     -38      1    -24     .96
       EMR  |   4 |    1.7   -5.9    7.3      18    -46     -8     .95
       ESA  |   4 |    -.5    -.6   -2.5      38    -30     45     .58
       GFZ  |   4 |    -.0   -1.3   -2.3     -59   -109    -23     .90
       GRG  |   4 |    6.1    3.1    -.2     -13     -9   -109     .49
       JPL  |   4 |   -1.7   -3.9   -1.2     -11     32    -25     .76
       MIT  |   4 |    1.2    3.7    7.7      16    -10    -57     .80
       NGS  |   4 |   -5.5    1.6    9.8     -18    -17    -27     .69
       SIO  |   4 |    -.1   10.0   -7.6      -6     17     -9     .77

       COD  |   5 |    -.5    -.9    -.3     -41      9    -27     .75
       EMR  |   5 |    2.4   -5.5   11.9      59     -9     -2     .82
       ESA  |   5 |    -.4   -1.5   -1.9      -9    -43     55     .01
       GFZ  |   5 |     .2    -.6   -2.6     -34    -89    -35     .69
       GRG  |   5 |    2.9    7.1   12.4      31      2    -56     .40
       JPL  |   5 |    1.7   -1.6   -7.3       6     47    -15     .46
       MIT  |   5 |    3.8    1.6    9.1      50     -4    -56     .65
       NGS  |   5 |    -.1    7.0   18.9     -35    -56     17     .40
       SIO  |   5 |    4.0    9.3    2.2      23    -10     20     .87

       COD  |   6 |    -.9   -1.2    -.9     -32    -17     -1     .57
       EMR  |   6 |    3.8    -.1   12.4      46    -21     -3     .85
       ESA  |   6 |   -1.2    -.7   -2.0      42    -43     39     .37
       GFZ  |   6 |     .7    -.4   -2.0     -50   -108    -59     .59
       GRG  |   6 |   11.3    3.2    6.5      15    -15    -78     .22
       JPL  |   6 |    -.2   -4.3    2.2     -25     46     21     .60
       MIT  |   6 |    1.7    1.8    4.8      28     23    -65     .59
       NGS  |   6 |   -2.0     .3    4.8     -11    -12    -39     .40
       SIO  |   6 |    5.6    7.3     .9     -12     -6     10     .63


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

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


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

Most combination statistics are with respect to the combined orbits and
consist of seven parts. The first, Table 1, summarizes all statistics for
the week. It contains means and standard deviations over the week of
satellite ephemeris and clock correction transformation parameters for
each centre (Table 1.1915.a). It also displays the computed satellite
position sigmas for the combined orbits (Table 1.1915.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 2.1915.[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 3.1915.[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 5.1915.0-6). 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 1915 summary.                       (Sep 18, 2016 - Sep 24, 2016)

Table 1.1915.a   GPS week: 1915   MJD: 57649.000-57655.000

         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  245|    2     0     0   -14   -11   -12   .07   11   10 |    -938    -194     13    141
        |    0     0     0    11    17    11   .02           |     204     292
emr   80|   -1    -3     1    -3   -20    21   .42   11   11 |    1752      42     15     85
        |    1     4     1    19     6    19   .05           |    1017     869
esa  150|    0     0     0    19    -6    10  -.47    7    7 |    -996     324      8    139
        |    0     0     0    23     8    16   .03           |     747    1655
gfz  206|   -2     0     0    -1   -15   -17   .17   12   12 |     125    -209     10    110
        |    1     0     2    14    16    13   .03           |     123     378
grg  103|    2     1    -1    -4     6    11  -.27   14   12 |      96     -30     18    154
        |    0     0     4    15    14    30   .04           |     172     325
igr  n/a|    0     0     0   -11     9     0  -.02    4    4 |   12814     645     15     94
        |    0     0     0    11     9     8   .03           |    2216     733
jpl   80|   -1     0     0    -1    28    -2   .38    9    9 |    1781     118     14    112
        |    0     1     0    27    21    18   .03           |    1139     826
mit  350|    0     0     0   -41    -3    -1  -.37   13   13 |      95    -160     41    361
        |    0     0     0    10    39    16   .03           |     247     296
ngs  226|    0     1     1    18    12    -3   .07   11    9 |    -970    -150    896   2027
        |    0     0     2    27    26    18   .06           |     190     252
sio  293|    0     0    -4   -14    -2   -17   .23   15   15 |     ---     ---    ---    ---
        |    0     0     2    19    40    35   .05           |     ---     ---


Table 1.1915.b   GPS week : 1915   MJD: 57649.000-57655.000   

         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    3    3    3    3    3    3 |
   2  |    4    5    4    4    4    4    4 |
   3  |    4    6    3    4    4    4    3 |
   4  |   13   11   12   14   18   24   13 |
   5  |    4    5    4    4    4    4    4 |
   6  |    3    4    3    3    3    3    3 |
   7  |    4    4    4    4    4    4    4 |
   8  |    3    3    4    3    3    3    3 |
   9  |    3    3    3    3    3    3    3 |
  10  |    4    6    4    4    4    4    3 |
  11  |    4    4    4    4    4    4    4 |
  12  |    4    4    5    5    5    5    5 |
  13  |    4    4    4    4    4    4    4 |
  14  |    4    5    5    5    5    4    4 |
  15  |    4    4    4    4    4    4    4 |
  16  |    4    5    5    4    5    5    5 |
  17  |    4    4    4    4    4    4    4 |
  18  |    5    4    4    4    5    5    4 |
  19  |    5    5    5    5    5    5    4 |
  20  |    4    4    4    4    4    4    4 |
  21  |    4    4    4    4    0    6    4 |
  22  |    4    5    4    4    3    3    4 |
  23  |    5    5    5    5    5    5    5 |
  24  |    3    3    3    3    3    3    3 |
  25  |    3    4    3    4    4    4    3 |
  26  |    4    4    4    4    4    4    4 |
  27  |    3    4    4    3    3    3    3 |
  28  |    4    4    4    4    3    4    3 |
  29  |    4    5    5    5    5    5    5 |
  30  |    3    3    3    3    3    3    3 |
  31  |    4    4    4    4    4    4    4 |
  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 2.1915.0   GPS week: 1915   Day: 0   MJD: 57649.000                            

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|    2     0     0    -4     0   -27   .07   11   11 |    -779      62     12    134
emr   80|   -1    -1     0   -21   -18    26   .41   10   10 |    1020     408     16     74
esa  150|    0     0     0   -13     8    32  -.51    7    7 |    -484     850      9    131
gfz  205|    0     0     3    -1    -8   -29   .13   12   12 |      54    -108     10     91
grg  100|    2     1    -1     6    22    -5  -.26   14   12 |      10     114     20    158
igr  n/a|    0     0     0   -25    23     2  -.08    4    4 |    9873    1204     15    163
jpl   80|   -1     0     0    31    -5    -1   .33    8    8 |     857     473     14    111
mit  350|    1     0     0   -48   -18   -23  -.39   14   12 |      71    -235     43    338
ngs  223|    0     0    -2    57    30   -19   .16   11    9 |    -765      40   1078   2018
sio  304|    0    -1    -1   -37   -40     0   .18   17   17 |     ---     ---    ---    ---

Table 2.1915.1   GPS week: 1915   Day: 1   MJD: 57650.000                            

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  244|    1     1     0   -26   -20    -8   .06   10    9 |   -1067    -391     12    149
emr   80|   -5   -13     3   -13   -30    32   .32   18   14 |    1595   -1008     18     88
esa  150|    0     0     0    24   -11   -13  -.45    8    8 |   -1247    1576      8    169
gfz  202|   -1     0     2    -3   -33    -9   .20   12   12 |     254    -727     10    144
grg   95|    1     0     0   -12   -19    17  -.26   15   13 |     198    -188     20    182
igr  n/a|    0     0     0   -10    -2     0  -.06    4    4 |   11251    -146     16    130
jpl   80|   -2     0     0    27    49    -1   .35    8    8 |    1445    -972     14    101
mit  350|    1     0     0   -23    25   -18  -.34   14   12 |     124    -222     41    397
ngs  227|    0     1     1    -6     0    16   .12   11    9 |   -1091    -365    980   2141
sio  301|    1     0    -5   -18    -3     1   .26   16   16 |     ---     ---    ---    ---

Table 2.1915.2   GPS week: 1915   Day: 2   MJD: 57651.000                            

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|    3     0     1    -3   -27    -3   .06   11   10 |    -859    -240     12    131
emr   80|    0     0     2   -15   -25    25   .45   10   10 |    1126    -707     13     74
esa  150|    0     0     0    20    -8    -3  -.44    7    7 |   -1064   -2002      8    143
gfz  205|   -3     0     0     9    13     0   .20   12   12 |     182    -387     12    102
grg  108|    3     1    -9    10    -4   -37  -.33   15   15 |     348    -477     21    136
igr  n/a|    0     0     0     3    11    -3  -.02    4    4 |   11644     463     16     78
jpl   80|    0    -1     1   -14    43    17   .37    9    9 |    1088    -582     15    120
mit  350|    0     0     0   -41   -47     0  -.35   13   12 |     237    -518     41    351
ngs  228|    0     0     1    23    42    -4   .05   10    9 |   -1031      -4    797   2063
sio  296|    0    -1    -4   -28   -20   -12   .24   15   15 |     ---     ---    ---    ---

Table 2.1915.3   GPS week: 1915   Day: 3   MJD: 57652.000                            

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|    2     0    -1     0   -22   -23   .06   11   10 |    -680    -546     15    147
emr   80|    0    -1     1    -6   -13    49   .44   10   10 |     729     903     14     68
esa  150|    0     0     0    28   -15    13  -.43    7    7 |   -1213   -1077      8    140
gfz  206|   -3     1     1     2    -9    -8   .19   12   12 |     117     213     11    102
grg  107|    2     1     4    -2     7    14  -.30   14   13 |      18      93     17    143
igr  n/a|    0     0    -1   -22    -1     7  -.02    4    4 |   12191    1349     16     97
jpl   80|   -1    -2     0   -40     9    -2   .39    9    9 |     840     717     15    115
mit  350|    0    -1     0   -43    58    12  -.36   13   12 |      -2      34     40    341
ngs  229|    0     2     2    53   -32   -34   .06   10    9 |    -716    -493    879   2136
sio  292|    0     0    -8   -33    83   -20   .23   16   16 |     ---     ---    ---    ---

Table 2.1915.4   GPS week: 1915   Day: 4   MJD: 57653.000                            

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|    3     0     0   -30    11     4   .11   11   11 |   -1095     -63     13    143
emr   80|   -1    -4     0   -12   -27     2   .40   10   10 |    1513    1260     14     83
esa  150|    0     1     0    54     0     4  -.51    7    7 |   -2393    2844      8    145
gfz  208|   -2     0     0   -31   -20   -13   .15   12   11 |    -101     336     10    111
grg  103|    2     1    -2   -30    18    16  -.27   14   12 |    -193     492     20    148
igr  n/a|    0     0    -1    -8     6    -8   .02    4    4 |   13508    1539     15     67
jpl   80|    0     0     1     5    44     3   .38    9    9 |    1518    1330     13    116
mit  350|    1     0     0   -48   -45   -11  -.36   14   13 |    -159     184     39    419
ngs  226|    0     2     2     5     9    16   .02   10    8 |   -1113     -61    896   1942
sio  283|    0    -1    -4    -1     1   -26   .28   14   13 |     ---     ---    ---    ---

Table 2.1915.5   GPS week: 1915   Day: 5   MJD: 57654.000                            

CENT STA|   DX    DY    DZ    RX    RY    RZ   SCL  RMS  WRMS|    TOFT   TDRFT   SDEV    RMS
        |  [mm]  [mm]  [mm] [uas] [uas] [uas] [ppb] [mm] [mm]|    [ps]  [ps/d]   [ps]   [ps]
--------+----------------------------------------------------+------------------------------
cod  246|    1     0     0   -20     8   -14   .04   11   10 |   -1256     259     15    154
emr   81|    0    -2     0    16   -18    -9   .44   11   11 |    2758     110     17    110
esa  150|    0     0     1    -7   -10    14  -.47    7    7 |    -399     638      7    127
gfz  208|   -1     0    -3    11   -14   -22   .16   12   12 |     250    -440     11    121
grg  103|    2     0     1   -14    18    66  -.22   13   11 |     180    -331     16    149
igr  n/a|    0     0    -1     0    13    -7  -.01    4    4 |   15140     417     17     64
jpl   80|    0    -1     0    10    42   -42   .41    8    8 |    2915     377     15    109
mit  350|    0     0     0   -30   -20    14  -.40   13   13 |     553    -522     41    370
ngs  224|   -1     2     4     1     0    -5   .02   11   10 |   -1216     183    851   2094
sio  280|    0     0    -3     3   -23    24   .24   15   14 |     ---     ---    ---    ---

Table 2.1915.6   GPS week: 1915   Day: 6   MJD: 57655.000                            

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  244|    1     0     0   -15   -29   -14   .06   10    9 |    -832    -441     13    129
emr   80|   -1    -2     2    30   -12    22   .48   10   10 |    3526    -671     16    100
esa  150|    0     0     0    28   -11    25  -.45    7    7 |    -178    -557      8    123
gfz  208|   -1     1     0     0   -34   -37   .15   13   12 |     120    -354     11    105
grg  109|    1     0    -2    10     4     9  -.26   13   11 |     115      82     16    166
igr  n/a|    0     0     0   -19    15    13  -.01    3    3 |   16091    -308     16     62
jpl   80|    0     0     1   -31    17     6   .41    8    8 |    3806    -511     14    113
mit  350|    0    -1     1   -52    23    17  -.40   14   13 |    -154     158     48    311
ngs  228|    0     0    -1    -9    40     8   .03   11    9 |    -861    -353    791   1796
sio  296|    0     0    -2    12   -13   -88   .14   12   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 3.1915.0   GPS week: 1915   Day: 0   MJD: 57649.000                            

        Weighted Average                                            Orbit Dynamics (7 days)
 PRN  |  cod  emr  esa  gfz  grg  igr  jpl  mit  ngs  sio  IGS |   cod  emr  esa  gfz  grg  igr  jpl  mit  ngs  sio   IGS
------+--------------------------------------------------------+---------------------------------------------------------
   1  |   10    7    3    9   11    4    5    6    9   22    3 |    36   41   29   40   31   33   39   32   36   52    35
   2  |   14    8    9   16   11    4    7   14   14   19    4 |    28   33   32   40   31   31   33   34   34   34    31
   3E |    9   10    6   10   27    4   10   11   12   12    4 |    26   28   21   25   29   22   25   22   24   30    22
  X4  |   16  ---  ---  ---  ---   23    9  ---  ---  ---   12 |    31  ---  ---  ---  ---   18   26  ---  ---  ---    26
   5E |   13   11    6   11   12    3   10   16   13   16    4 |    27   30   27   34   29   28   29   28   31   37    28
   6  |   10    8    5    9   10    3    8   13    9   13    3 |    24   29   21   27   23   24   27   30   27   32    24
   7  |   10    8    7   16   10    3    8   14   11   23    4 |    32   37   29   35   28   29   34   29   31   40    30
   8  |    8    9    5    9    9    4    6   12    7   16    3 |    31   31   21   28   29   24   28   21   29   33    25
   9  |   16    7    6   10   10    4    7   12    6   14    3 |    31   31   25   25   29   24   31   21   28   35    26
  10E |    8   17    6   10   21    4    9   10    9   14    4 |    27   36   26   32   34   26   29   27   30   30    27
  11  |    9    9   11   12    9    5    7    9   10   18    3 |    42   47   41   47   40   40   46   42   42   44    42
  12E |   14    9    6   11   18    4    9   17    8   16    4 |    29   30   28   34   27   27   30   31   30   34    28
  13  |   10    9   11   15    9    5    8   14   12   17    4 |    33   39   32   35   30   32   40   35   35   40    33
  14  |    9   12    8   14   12    5    7   16   13   19    4 |    34   33   28   34   28   28   32   33   30   29    29
  15  |   10   10    7   13   12    4    8   14   10   17    3 |    35   39   34   31   35   31   36   29   34   34    33
  16E |    8   13    6   16   14    4   12   12   10   16    4 |    25   28   23   28   29   24   25   25   26   30    24
  17  |   13    8    8   15   14    5    8   14   16   18    4 |    32   34   29   36   31   31   34   33   34   35    30
  18E |   19   11    8   12   22    4    8   15   10   14    4 |    29   31   25   32   34   25   28   25   30   30    26
  19  |   13   10    8   16   16    6    7   16   18   21    4 |    31   33   30   35   32   30   34   30   31   33    30
  20E |   20    8    7   11   15    5    7   15    7   11    4 |    39   39   37   40   37   37   38   36   39   46    37
  21  |    8    8    9   12   12    5    6   20   10   18    4 |    24   26   21   24   22   22   23   20   21   22    23
  22E |   10    9    7   12   19    4   11   14   12   15    4 |    29   30   27   32   26   29   31   24   30   39    28
  23  |   10    9    8   18   15    4   10   22   14   22    5 |    30   33   24   29   31   24   31   27   25   28    25
  24  |   10    8    5    6    9    2    5    9    8   13    2 |    33   35   30   34   31   30   35   34   35   38    32
  25E |   14    7    5    8   13    5    7    8    6   13    3 |    30   30   25   31   26   25   30   26   29   32    27
  26E |    8    9    7    9   13    4    6   17    9   14    3 |    27   27   22   26   25   24   28   24   26   26    24
  27  |    7   12    5    9   12    5    6   11    6   15    3 |    26   28   22   26   25   23   26   24   25   29    23
  28E |    9   16    6   11   18    4    9   10    8   17    4 |    26   34   27   27   27   26   29   26   29   35    26
  29  |    9   10    9   12   11    7    8   21   11   21    4 |    35   34   29   35   33   28   32   35   31   33    30
  30  |    9    6    5   11    5    4    7    8    5   14    2 |    31   34   25   33   26   29   33   30   32   36    29
  31  |    8   11    8   13   10    4    7   15   14   21    4 |    33   37   28   35   29   29   37   30   32   35    30
  32  |    8    7    8    7   11    4    6    9    8   12    3 |    36   41   35   37   37   35   38   32   39   42    36
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |   11   10    7   12   14    4    8   14   11   17      |T   30   33   27   32   29   27   31   28   30   34    28
 WRMS |   11   10    7   12   12    4    8   12    9   17      |NE  31   34   28   33   30   28   33   30   31   35    29
 MEDI |   10    9    7   11   12    4    7   14   10   16      |MD  31   33   27   33   29   28   31   29   30   34    28

Table 3.1915.1   GPS week: 1915   Day: 1   MJD: 57650.000                            

        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   13    5    8   11    2    5    7    7   18    3 |    29   36   21   33   26   26   35   24   28   44    29
   2  |   11    9    8   18   14    5    8   15   14   20    4 |    21   27   20   23   23   19   23   20   22   19    19
   3E |    7   45    7   11   22    5    9   12   12   12    5 |    22   50   16   21   23   17   24   19   22   24    18
  X4  |   12  ---  ---  ---  ---   25    9  ---  ---  ---   11 |    19  ---  ---  ---  ---   35   22  ---  ---  ---    18
   5E |   13   16    6   12   22    4   11   14    9   14    4 |    23   29   18   27   23   21   24   17   24   28    20
   6  |   10    9    4    9   12    4    8   14    9   13    3 |    23   30   20   20   21   20   26   26   23   29    21
   7  |    5   10    8   12   12    3    8   14   11   17    3 |    25   30   19   25   24   22   30   19   22   29    22
   8  |    7   11    6   10    9    3    6    9    6   14    3 |    23   26   14   18   17   17   24   14   19   24    18
   9  |    6    9    6    7   11    3    6   11    7   12    2 |    20   25   15   19   18   17   26   16   19   26    19
  10E |   10   50    5    9   19    6   10   11   11   14    5 |    23   54   19   25   21   20   23   22   24   24    20
  11  |    8   14   13   11   10    3    7   10    7   12    3 |    28   35   29   30   26   28   35   25   25   31    28
  12E |   12   14    6   13   14    4   11   15    9   13    4 |    18   24   15   23   16   17   19   15   18   20    16
  13  |    9   10   10   13   12    4   10   14   11   16    4 |    23   31   20   24   21   19   31   19   22   23    21
  14  |    9   20   10   16   13    3    9   16   13   21    4 |    24   28   21   25   25   20   27   20   24   19    21
  15  |   11   11    7   14   13    4    9   13   12   17    4 |    28   31   25   22   24   22   30   20   25   23    23
  16E |    8   17    8   17   28    6   11   12   12   19    5 |    21   25   18   23   32   19   20   18   23   27    19
  17  |   13   12    9   15   11    5    7   14   11   19    4 |    26   30   20   25   23   22   28   21   22   27    22
  18E |   15   20    7    9   14    5    9   11    9   14    4 |    26   33   25   30   28   24   29   22   28   28    25
  19  |   14   12    8   16   12    5    9   17   14   24    4 |    25   28   18   24   22   20   26   18   18   24    19
  20E |   19   11    5   12   13    5    6   15   10   10    4 |    36   38   30   34   35   32   34   39   35   37    33
  21  |    9   13    9   12   11    6    6   22   11   20    4 |    26   31   20   20   19   21   24   22   18   17    20
  22E |    8   22    7   11   22    5    9   14   12   14    4 |    28   37   26   29   27   26   31   22   31   36    27
  23  |   11   14    8   16   12    4    9   21   12   21    4 |    25   26   18   20   22   18   27   20   18   14    18
  24  |   10   17    5    8    8    4    8   12    8   11    3 |    22   31   18   25   20   20   27   20   25   26    21
  25E |   11   18    6    7   12    5    8    9   11   12    3 |    21   34   14   22   21   19   25   16   21   20    19
  26E |    6   13    8   11   23    6    8   11   13   17    4 |    23   24   14   24   32   20   22   17   23   20    19
  27  |    8   12    6    8   12    4    6   13   11   15    3 |    24   30   18   23   23   20   26   21   25   24    21
  28E |    7   12    8   10   10    4    8   12    7   18    3 |    20   27   18   20   21   19   24   21   23   29    20
  29  |    8   14    8   15   18    4   10   19   14   22    4 |    28   33   21   27   29   22   27   26   22   21    23
  30  |    8    9    6    7    8    4    6   10    5   13    2 |    21   27   15   22   19   19   28   19   23   27    20
  31  |    5   14   10   15   11    4    9   13   12   22    4 |    24   33   23   26   23   22   32   21   25   28    24
  32  |    7   17    7    7   11    4    9    9    7   14    3 |    26   35   23   28   24   23   32   22   26   31    25
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |   10   18    8   12   15    4    8   14   11   16      |T   24   31   19   24   23   21   26   20   23   25    21
 WRMS |    9   14    8   12   13    4    8   12    9   16      |NE  24   30   19   23   22   21   27   20   22   25    21
 MEDI |    9   13    7   11   12    4    8   13   11   15      |MD  23   30   19   24   23   20   26   20   23   26    20

Table 3.1915.2   GPS week: 1915   Day: 2   MJD: 57651.000                            

        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    6    6    7   12    4    7    6    8   17    3 |    36   40   28   38   32   34   41   34   34   51    34
   2  |   10    9    9   15   12    4    9   12   15   19    4 |    20   27   22   29   27   22   26   24   25   24    22
   3E |    9    9    6    8   17    5    9   12    7    9    3 |    23   24   17   27   24   20   25   21   21   27    20
  X4  |   14  ---  ---  ---  ---  124   10  ---  ---  ---   12 |    23  ---  ---  ---  ---   87   23  ---  ---  ---    18
   5E |   12   15    5   13   11    4   12   14    9   13    4 |    24   28   21   29   24   23   27   21   27   31    23
   6  |    7    7    5    9   15    5    7   12    9    9    3 |    19   26   13   25   19   19   26   22   23   27    19
   7  |   10    8    7   14   14    4   10   15   13   18    4 |    29   33   23   28   26   25   33   22   26   30    25
   8  |   13    9    5    9   10    3    8    9    9   16    3 |    27   27   15   20   21   17   25   16   20   28    19
   9  |    8    7    7   10   10    3    8   11    6   11    3 |    25   29   18   24   27   20   29   21   21   29    22
  10E |   10   13    4    8   23    3    8   11    8   13    3 |    25   26   20   28   26   24   25   23   27   26    22
  11  |   10    9   11   11   10    3    9   10   11   13    3 |    32   39   34   38   35   33   38   33   32   34    33
  12E |   14   12    5   12   26    4   11   14   11   12    4 |    23   25   19   30   21   20   25   19   23   25    19
  13  |    8   10    9   16    9    4    9   13   11   15    4 |    24   34   24   31   20   25   34   24   23   27    24
  14  |    9   11    8   18   20    4    9   16   12   19    4 |    28   32   24   32   28   24   29   23   27   22    24
  15  |   10   10    7   14   13    5    9   12   12   17    4 |    30   35   28   29   34   28   34   26   29   32    28
  16E |   10   18    7   16   26    4   11   12    9   17    4 |    20   24   18   22   30   17   18   16   18   27    16
  17  |   14    9    8   15    9    5    8   13   12   16    4 |    29   28   25   34   25   25   29   23   28   28    25
  18E |   16   11    6   12   23    4    7   13   10   13    4 |    31   35   29   36   35   31   33   26   36   32    30
  19  |   13   11    7   17   14    4    9   14   15   20    4 |    27   28   23   33   26   23   28   23   24   26    23
  20E |   24   10    5   10   10    3    7   12   10    9    4 |    36   34   30   34   32   30   32   32   36   35    31
  21  |    9    8    9   12   13    4    7   20   11   15    4 |    22   24   19   20   19   19   22   15   19   16    19
  22E |    7   10    6    9   15    3    9   14    8   11    3 |    26   28   24   31   25   25   30   24   28   36    26
  23  |   11   10    7   17   17    4   11   22   13   19    4 |    27   29   20   26   26   21   31   22   22   20    21
  24  |    9   10    5    8   10    4    7    9    5   12    3 |    22   29   20   26   18   22   30   25   25   31    23
  25E |   13   11    6    7   12    6    9    7    6    8    3 |    24   27   18   25   16   21   27   19   23   24    20
  26E |    9    8    6   10   22    5    7    8   10   14    3 |    22   22   16   25   23   18   22   15   21   19    17
  27  |   16    9    7    8   13    3    6   11    9   14    3 |    26   25   15   21   23   17   23   19   19   26    18
  28E |    8   12    6   11   11    4    9   15    8   14    3 |    20   24   17   23   21   18   24   18   24   29    19
  29  |   10   10    7   15   14    4   11   23   12   17    4 |    27   27   20   27   26   21   25   29   22   21    21
  30  |    6    7    5    9   14    3    7    9    6   13    3 |    25   32   17   27   21   23   31   22   26   32    23
  31  |    7    9    8   16   16    4   10   13   11   19    4 |    27   33   22   29   23   23   34   22   26   25    24
  32  |    8   12    6    9   16    4    7   10    7   11    3 |    30   37   28   32   36   29   34   27   32   34    30
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |   11   10    7   12   15    4    9   13   10   15      |T   25   29   21   28   25   25   28   22   25   28    23
 WRMS |   10   10    7   12   15    4    9   12    9   15      |NE  26   30   21   28   25   26   29   23   25   28    23
 MEDI |   10   10    6   11   14    4    9   12   10   14      |MD  25   28   20   28   25   23   28   22   25   27    22

Table 3.1915.3   GPS week: 1915   Day: 3   MJD: 57652.000                            

        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    9    5    8    8    3    6    6    8   16    3 |    41   44   36   40   34   39   44   35   42   47    39
   2  |   11    7    8   15   15    5    8   14   12   20    4 |    26   34   28   36   25   30   34   32   33   33    29
   3E |   10    9    6    9   20    3    8   10    8   11    3 |    28   31   25   29   33   26   32   26   31   32    28
  X4  |   15  ---  ---  ---  ---  165   13  ---  ---  ---   14 |    28  ---  ---  ---  ---  127   26  ---  ---  ---    24
   5E |   11   12    6   14   17    5   14   13    9   15    4 |    31   37   28   34   29   34   37   32   32   38    31
   6  |   10    9    4    9   16    4    7   12    8   11    3 |    32   36   28   31   27   31   36   34   33   35    31
   7  |   12    9    8   14   12    5   10   15   12   19    4 |    30   37   27   32   30   27   36   28   30   32    29
   8  |    9    9    5    7   12    3    8   10    7   17    3 |    28   30   21   24   27   25   30   23   28   33    24
   9  |   11    9    8    8    7    3    9   12    6   11    3 |    30   35   24   26   25   26   33   26   28   34    27
  10E |    6   13    5    6   21    3   11   12   11   12    3 |    29   33   27   30   29   28   33   29   31   30    28
  11  |   10   10   13   10   10    2    8   12    8   16    4 |    35   42   36   39   32   36   41   38   38   39    36
  12E |   16   12    7   14   14    4   12   15   11   17    4 |    32   32   27   34   27   28   31   28   31   32    28
  13  |   10    9    9   14    9    4   10   13   13   17    4 |    30   39   29   31   28   30   39   29   35   31    31
  14  |    8   11   10   16   13    3    8   16   13   21    4 |    32   35   28   32   33   29   34   29   31   27    29
  15  |    9   11    6   13   12    4   11   14   12   19    4 |    42   44   37   36   41   40   47   36   37   39    39
  16E |    7   16    7   14   14    5   13   12   10   14    4 |    28   32   25   30   29   25   27   25   28   33    26
  17  |   15    9    6   17   11    6    9   12   12   18    4 |    33   36   29   36   28   31   37   32   33   36    31
  18E |   13   11    7    9   24    4    8   11    9   12    4 |    30   32   26   31   29   27   32   24   31   29    27
  19  |   15    9    7   16   14    6    9   14   14   21    4 |    32   34   29   35   30   29   36   29   28   34    29
  20E |   19    9    5   13   13    2    8   12   10   11    4 |    30   28   23   27   25   24   26   25   24   30    24
  21  |    7    8   10   12   11    4    6   20   11   18    4 |    22   25   20   21   19   19   23   16   16   18    18
  22E |   10   11    7   12   16    3    8   12   10   14    3 |    29   29   26   29   29   27   31   23   33   37    27
  23  |   12   10    9   17   14    6   10   22   12   21    4 |    29   32   23   25   27   24   33   24   27   21    24
  24  |    8   10    6    7    7    3    8   11    9   14    3 |    30   37   28   31   29   30   38   32   32   35    31
  25E |   16   11    8    9   17    7    9    9   11   12    4 |    28   35   24   31   37   28   34   28   31   33    29
  26E |    9    7    7   13   25    6    8    8    9   13    3 |    29   30   24   28   35   27   30   24   29   28    26
  27  |    6    8    4    8   10    3    9    5    7   12    2 |    27   33   22   25   23   24   30   23   28   31    25
  28E |   11    8    6   12   11    3    9   10    9   16    3 |    29   31   25   27   30   28   33   27   34   33    28
  29  |   11   11    8   17   15    5   10   21   13   17    4 |    37   35   30   35   33   30   35   36   30   32    31
  30  |   10    7    5    8   11    3    8    9    6   15    3 |    29   37   23   31   28   28   36   29   33   34    29
  31  |    8   10    9   18   12    4   11   13   13   18    4 |    31   39   29   34   32   31   40   29   34   32    31
  32  |    5   10    6    8   10    2    7    9   11   12    3 |    36   42   35   37   34   35   41   33   34   42    36
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |   11   10    7   12   14    4    9   13   10   16      |T   30   34   27   31   29   31   34   28   31   32    28
 WRMS |   10   10    7   12   13    4    9   12    9   16      |NE  31   36   28   31   29   34   35   29   31   33    29
 MEDI |   10    9    7   12   13    4    9   12   10   16      |MD  30   35   27   31   29   28   34   29   31   33    29

Table 3.1915.4   GPS week: 1915   Day: 4   MJD: 57653.000                            

        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    6    7    7   11    3    5   11    5   14    3 |    71   76   69   74   69   72   77   69   75   80    72
   2  |   14    7    7   16   15    5    9   15   13   19    4 |    27   31   28   32   25   27   29   26   27   26    25
   3E |    9    9    6    8   18    3    8   12    8    9    3 |    26   27   21   26   24   23   27   22   27   26    23
  X4  |   21  ---  ---  ---  ---   39   14  ---  ---  ---   18 |    43  ---  ---  ---  ---   58   23  ---  ---  ---    27
   5E |   12   13    5   15   17    3   11   12   10   12    4 |    23   27   20   30   25   22   25   21   23   26    22
   6  |   11    7    6   13   12    2    7   14    8    8    3 |    28   27   21   28   20   24   28   27   25   28    23
   7  |   12    7    7   11    8    3    7   16   11   16    3 |    31   35   27   30   27   27   34   25   26   28    27
   8  |    9    9    6    9   10    3    7    9    7   14    3 |    27   30   20   25   23   22   29   19   24   30    23
   9  |   11    7    7    6    8    2    7   15    7    9    3 |    27   30   22   26   26   24   32   23   26   30    25
  10E |   10   11    5    8   15    4    8   12    8   11    3 |    25   28   25   29   25   26   30   24   29   24    25
  11  |    9    9   14   10    9    4    8   13    8   10    3 |    30   38   33   35   32   32   40   32   30   35    32
  12E |   13   15    7   16   18    4   13   16   11   15    4 |    28   30   23   31   20   24   30   22   29   27    24
  13  |   10    8    8   13    9    5    9   14   10   16    3 |    30   35   28   32   28   28   35   28   32   28    28
  14  |    7   11    9   15   15    4    8   17   14   20    4 |    31   34   28   32   29   27   33   27   30   24    28
  15  |   11    8    7   12   11    6   16   14   10   20    4 |    37   36   31   33   32   30   36   28   30   28    30
  16E |   11   17    7   16   24    4   12   13    8   15    4 |    27   29   23   27   33   24   26   26   27   29    24
  17  |   15    9    9   16   11    5    7   14   13   15    4 |    30   30   24   29   25   26   32   25   26   27    25
  18E |   20   10    8   11   23    4    7   12   10   15    4 |    35   35   29   34   39   31   32   26   34   31    31
  19  |   16   10    8   15    9    6    8   15   15   18    4 |    31   31   26   31   28   26   33   25   25   28    26
  20E |   14    8    5   11   12    3    9   12    8   11    3 |    26   20   16   21   21   19   23   18   22   20    18
 X21  |    3  ---  ---  ---  ---   29  ---  ---  ---  ---    0 |    76  ---  ---  ---  ---   48  ---  ---  ---  ---    74
 X22E |    8    9    6   10  ---    4    9   11    8   11    3 |    29   34   25   31  ---   28   32   26   31   37    29
  23  |   13    9    8   15   11    4    8   21   14   20    4 |    29   32   23   25   26   23   32   22   24   20    23
  24  |    7    8    5    9    8    2    5   14    6   13    3 |    30   33   25   32   26   27   33   26   30   27    28
  25E |   14   11    5    7   17    4    9   12   10    9    3 |    25   31   23   27   22   24   30   20   27   28    24
  26E |   11    9    6   10   16    5    9    8    9   11    3 |    28   29   21   29   33   26   28   24   30   20    25
  27  |    8    7    4   10   12    3    5    8    6    7    2 |    25   28   17   23   23   21   26   19   21   23    20
  28E |   11    9    7    9   11    4    8   10    8   13    3 |    24   26   24   25   29   24   25   22   25   29    23
  29  |    7   10    8   15   16    5   11   22   13   18    4 |    28   29   23   30   29   23   29   29   23   26    23
  30  |    8    6    3    6    8    2    7   10    5   11    2 |    30   33   25   28   28   26   32   27   28   30    27
  31  |    8   10    8   14   11    4   11   14   12   19    4 |    29   38   29   32   29   29   40   28   31   29    29
  32  |    6    9    4    7   10    4    8    7   10   10    2 |    34   42   31   35   34   33   39   29   36   34    34
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |   11   10    7   12   14    4    9   14   10   14      |T   31   32   26   30   28   28   32   26   29   29    28
 WRMS |   11   10    7   11   12    4    9   13    8   13      |NE  34   35   27   32   29   31   34   28   29   30    30
 MEDI |   11    9    7   11   11    4    8   13    9   13      |MD  29   31   24   30   27   26   32   25   27   28    25

Table 3.1915.5   GPS week: 1915   Day: 5   MJD: 57654.000                            

        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    9    5    7    8    2    4   10   10   13    3 |    52   58   50   56   51   54   58   53   54   62    54
   2  |   13    9    7   14   11    4    6   16   13   19    4 |    24   32   24   32   23   25   29   25   27   23    24
   3E |   10   10    6    8   21    3    8   12   10   11    3 |    34   33   24   35   34   31   33   29   36   31    30
  X4  |   27  ---  ---  ---  ---   19   20  ---  ---  ---   23 |    45  ---  ---  ---  ---   36   21  ---  ---  ---    24
   5E |    9   14    5   16   11    4   12   15   10   13    4 |    30   31   22   37   25   29   32   22   32   29    26
   6  |   11    8    6    8   10    5    7   12    8   11    3 |    29   34   26   31   27   28   35   32   29   34    29
   7  |   11    9    8   11    8    3    9   18   13   17    4 |    29   35   26   30   26   26   34   23   28   28    27
   8  |    8    9    6    8    9    3    8    8   10   13    3 |    22   31   18   24   22   22   28   17   25   26    21
   9  |   10    8    9    7    8    3    7   16    9    9    3 |    28   33   22   29   22   25   32   25   26   30    25
  10E |   11   12    4    6   19    3   11   11   10   11    3 |    29   32   24   31   28   28   34   26   34   26    27
  11  |    6   10   13   11    8    3    8   13   10   15    3 |    27   38   30   33   29   30   38   27   30   28    29
  12E |   17   15    8   15   17    5   12   16   14   17    5 |    27   28   22   29   25   23   27   20   30   22    22
  13  |    7   10    9   13    8    5    9   13   10   14    3 |    24   36   25   31   26   26   35   23   30   26    26
  14  |    8   10   10   15   11    4    9   16   13   20    4 |    30   35   28   31   31   29   35   25   34   23    28
  15  |   12    8    7   12   11    5    9   12   11   17    3 |    36   38   30   33   32   32   36   30   33   30    31
  16E |   11   16    8   16   15    5   10   14   13   15    4 |    22   25   19   26   22   20   21   20   29   24    19
  17  |   13   10    9   15   10    4    7   12   12   13    4 |    29   31   23   29   24   26   32   23   28   25    25
  18E |   20    9    6   13   24    5    9   11   12   16    4 |    32   34   27   35   32   30   34   22   33   31    28
  19  |   15    9    9   14    9    5    8   15   17   18    4 |    27   30   24   29   26   24   32   22   27   22    24
  20E |   20   11    5   13   14    3    8   13   10   13    4 |    26   23   16   22   23   18   21   17   22   23    18
 X21  |   10    7    7   15  ---    5  ---   17  ---  ---    5 |    20   17   16   15  ---   14  ---   11  ---  ---    15
  22E |    7   11    5   11   14    4    8   10   10    9    3 |    32   36   29   36   34   33   36   26   37   35    32
  23  |   12   10    8   16   12    4    9   20   15   20    4 |    27   33   21   26   25   24   32   20   26   15    22
  24  |    7    9    7    8    7    4    7   11    7   14    3 |    26   36   23   29   28   27   35   25   32   28    27
  25E |   15   12    6   10   16    5    9    9    8   11    3 |    25   32   25   29   29   26   30   20   31   25    25
  26E |   11   11    6   13   20    4    8   10   13   13    4 |    27   31   22   29   34   26   30   22   35   22    26
  27  |    9   11    5    9    9    3    6    8    8   14    3 |    27   34   20   27   24   23   28   21   26   25    23
  28E |    9   13    7    8    7    4    8   11   12   10    3 |    24   26   22   23   24   23   25   24   32   24    23
  29  |    7   13    8   16   12    5   10   22   14   20    4 |    29   29   23   31   27   23   29   29   26   24    24
  30  |    7    7    5    6    9    2    6    9    8   13    2 |    27   33   22   27   22   25   33   24   30   30    25
  31  |   10   10    8   16   10    4   10   13   13   16    4 |    33   39   30   34   31   30   41   28   37   29    31
  32  |    6    8    6    9   11    2    8    8   12   11    3 |    34   41   31   37   30   34   40   30   39   31    33
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |   11   11    7   12   13    4    8   13   11   15      |T   29   33   24   30   27   27   32   24   31   27    26
 WRMS |   10   11    7   12   11    4    8   13   10   14      |NE  29   34   25   30   27   27   34   25   30   28    27
 MEDI |   10   10    7   12   11    4    8   12   10   13      |MD  27   33   24   30   26   26   32   24   30   26    25

Table 3.1915.6   GPS week: 1915   Day: 6   MJD: 57655.000                            

        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    4    8    7    3    5    6    9   15    2 |    50   53   48   50   47   49   54   52   49   58    50
   2  |    9    7    7   15   16    4    7   17   14   18    4 |    34   38   32   40   30   33   38   37   37   34    34
   3E |    9   11    5    9   18    2    7   10    9    8    3 |    37   37   27   34   35   32   38   32   34   41    33
  X4  |   14  ---  ---  ---  ---   16   11  ---  ---  ---   13 |    22  ---  ---  ---  ---   21   29  ---  ---  ---    22
   5E |   10   13    5   13   14    3   12   12   11   10    4 |    30   34   27   36   28   31   36   29   33   39    31
   6  |    8    6    4    9    6    4    6   11    7    7    2 |    31   39   27   35   28   32   40   34   35   37    32
   7  |   10    7    8   13   11    2    8   18   13   15    4 |    30   37   27   33   25   29   36   30   29   34    29
   8  |    9   12    5    9   10    3    7    8    7    8    3 |    28   29   17   21   25   21   29   17   24   29    23
   9  |    7    8    6   10   11    3    7   16    9    7    3 |    35   37   28   28   30   29   39   25   30   40    31
  10E |    9   10    4    5   18    3    8   12   10    7    3 |    32   32   24   34   25   28   33   29   31   33    28
  11  |   10    8   13   11   10    3    7   10    8    8    3 |    34   42   37   40   34   37   43   37   36   37    36
  12E |   17   15    6   19   18    2   12   16   12   15    5 |    33   32   27   38   29   27   32   28   28   33    28
  13  |    8    8    9   15    9    3    9   15   12   11    3 |    32   42   31   38   31   33   42   32   36   34    34
  14  |    6   11   10   15   11    4    8   17   12   18    4 |    33   38   28   34   31   30   35   31   31   30    31
  15  |   11    8    6   16   11    3    8   12   11   14    3 |    43   44   37   38   39   38   44   34   37   37    38
  16E |   12   14    6   17   17    4   12   18   12   13    4 |    24   25   21   25   24   21   24   23   23   29    21
  17  |   11    8    8   13   10    3    6   11   13   14    3 |    35   37   28   37   29   31   38   32   36   35    32
  18E |   17    8    7   13   20    4    9   12   10   12    4 |    35   34   28   37   29   31   35   25   33   33    30
  19  |   12    9    7   16    9    3    7   15   13   16    4 |    32   37   30   39   29   31   38   32   32   34    32
  20E |   17    8    3   15   14    4    8   12    9    9    3 |    31   26   24   28   28   24   29   26   26   29    26
  21  |    9    6    8   15    8    4    8   20   12   15    4 |    21   17   19   13   10   15   17   12    3    6    15
  22E |    8   14    6   12   15    3    7   15   10   11    3 |    34   37   29   35   30   32   37   28   35   44    33
  23  |   14    9    7   19   13    4   12   23   16   20    5 |    34   33   24   26   30   25   36   21   23   22    25
  24  |    5    8    4   12    9    3    5   11    8    7    2 |    32   36   30   36   25   31   37   33   32   34    32
  25E |   11   11    4    8   13    4    9   10   10    8    3 |    29   30   23   31   29   26   32   24   27   34    27
  26E |   10    6    6   12   21    4    7   10   12   10    3 |    29   30   22   28   33   24   27   22   26   24    25
  27  |    6   14    4    9    8    3    8   12    6    6    3 |    28   34   21   26   27   23   31   19   24   32    25
  28E |    6    9    6   11   11    3    6   14   10   10    3 |    28   30   24   28   30   26   30   25   29   33    27
  29  |    7   12    7   17   13    4   10   19   12   18    4 |    32   32   26   34   32   27   31   33   25   33    28
  30  |    8    6    5    8    9    2    6   11    7    6    2 |    32   38   26   34   27   30   38   31   33   34    31
  31  |    7   10    9   18    8    4    9   15   11   15    4 |    32   40   30   38   30   32   40   30   30   34    32
  32  |    8    7    5    7    9    2    8    8    8    6    2 |    40   45   34   39   38   38   45   36   36   43    39
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |   10   10    7   13   13    3    8   14   11   12      |T   32   35   27   33   29   29   35   29   30   33    30
 WRMS |    9   10    7   12   11    3    8   13    9   12      |NE  32   37   29   33   29   30   37   30   30   33    31
 MEDI |    9    8    6   13   11    3    8   12   10   11      |MD  32   37   27   34   29   30   36   30   31   34    31



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 4.1915   GPS week: 1915   MJD: 57649.0-57655.0

CENT| CLK EPO  |        BRUX       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3053 |U    4     4    12 |U    7    13    24 |U    8     8    16 |
emr | emr 2962 |     8     6    16 |U    8    13    25 |     9     9    17 |
esa | esa 2962 |     6     6    14 |U    8    12    26 |    10     9    18 |
gfz | gfz 2962 |U    5     5    13 |U    8    13    27 |U    9     8    16 |
grg | grg 2934 |U    6     6    14 |U    8    16    28 |    11    10    20 |
igr | igr 2962 |     5     5    13 |     7    12    25 |     9     8    16 |
igs | igs 2962 |     5     5    13 |     7    12    25 |     9     9    16 |
jpl | jpl 3043 |     6     6    16 |U    9    13    25 |U    9     8    18 |
mit | mit 2962 |     6     6    14 |U    9    15    32 |U    9     9    20 |



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 5.1915.0   GPS week: 1915   Day: 0   MJD: 57649.0

CENT| CLK EPO  |        BRUX       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3065 |     5     5    15 |     8    11    24 |     9     8    16 |
emr | emr 2976 |     8     6    19 |     7    10    20 |    12    13    20 |
esa | esa 2976 |     6     7    17 |     7    10    24 |    12    10    17 |
gfz | gfz 2976 |     6     6    16 |     7    11    29 |    10     9    17 |
grg | grg 2976 |     7     7    17 |     7    10    24 |    12    12    21 |
igr | igr 2976 |     6     6    15 |     6    10    23 |    11     9    15 |
igs | igs 2976 |     6     7    16 |     7    10    23 |    11    10    17 |
jpl | jpl 3068 |     7     7    18 |     8    10    25 |    11    10    19 |
mit | mit 2976 |     6     7    16 |     7     9    31 |    10    11    22 |

Table 5.1915.1   GPS week: 1915   Day: 1   MJD: 57650.0

CENT| CLK EPO  |        BRUX       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3068 |     6     5    13 |     7    15    25 |     8     8    14 |
emr | emr 2976 |    10     6    20 |     9    14    27 |    11    12    15 |
esa | esa 2976 |     7     6    15 |     8    14    22 |    10    12    17 |
gfz | gfz 2976 |     7     6    14 |     9    15    25 |     8     9    13 |
grg | grg 2976 |     9     8    15 |     8    15    29 |    11    11    20 |
igr | igr 2976 |     7     6    14 |     8    13    22 |     9     9    13 |
igs | igs 2976 |     7     6    13 |     8    14    21 |     9    10    15 |
jpl | jpl 3069 |     8     6    14 |     9    16    24 |    10    10    15 |
mit | mit 2976 |     7     5    13 |     8    14    21 |     9     8    16 |

Table 5.1915.2   GPS week: 1915   Day: 2   MJD: 57651.0

CENT| CLK EPO  |        BRUX       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3067 |     4     4    11 |     6    11    24 |     6     4    13 |
emr | emr 2976 |     7     6    15 |     7    11    22 |     8     5    17 |
esa | esa 2976 |     5     6    11 |     7    10    24 |     9     6    16 |
gfz | gfz 2976 |     4     5    13 |     6    11    25 |     7     5    13 |
grg | grg 2976 |     5     5    13 |     7    11    26 |     9     7    19 |
igr | igr 2976 |     4     6    11 |     6    10    23 |     7     5    14 |
igs | igs 2976 |     4     5    12 |     6    11    23 |     7     5    14 |
jpl | jpl 3072 |     6     7    16 |     8    11    24 |     8     5    16 |
mit | mit 2976 |     6     6    14 |     7    11    26 |     7     5    18 |

Table 5.1915.3   GPS week: 1915   Day: 3   MJD: 57652.0

CENT| CLK EPO  |        BRUX       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3072 |     3     4    13 |    10    18    19 |     8     6    15 |
emr | emr 2976 |     6     5    18 |    11    16    19 |    10     9    15 |
esa | esa 2976 |     5     5    15 |    10    15    22 |    11     8    16 |
gfz | gfz 2976 |     4     4    14 |     9    16    20 |     9     6    17 |
grg | grg 2976 |     4     4    16 |    11    16    23 |    12     7    19 |
igr | igr 2976 |     4     4    15 |    10    15    20 |     9     7    16 |
igs | igs 2976 |     4     5    15 |    10    16    19 |     9     7    15 |
jpl | jpl 3072 |     5     6    17 |    11    16    21 |     9     6    17 |
mit | mit 2976 |     4     5    13 |    10    17    22 |    10     8    19 |

Table 5.1915.4   GPS week: 1915   Day: 4   MJD: 57653.0

CENT| CLK EPO  |        BRUX       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 2975 |     5     6    11 |     9    19    33 |     7     9    19 |
emr | emr 2880 |     9     7    13 |     8    21    37 |     8     8    22 |
esa | esa 2880 |     6     8    13 |     8    22    42 |    10    10    23 |
gfz | gfz 2880 |     6     7    12 |     8    23    43 |     9     8    20 |
grg | grg 2784 |     6     6    13 |     8    18    35 |    11    11    19 |
igr | igr 2880 |     6     7    12 |     8    24    40 |     9     9    21 |
igs | igs 2880 |     6     7    12 |     8    22    38 |     9     9    21 |
jpl | jpl 2975 |     7     8    16 |    13    19    34 |     9    10    23 |
mit | mit 2880 |     6     7    12 |    17    33    71 |    11    10    25 |

Table 5.1915.5   GPS week: 1915   Day: 5   MJD: 57654.0

CENT| CLK EPO  |        BRUX       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3067 |     5     4    12 |     6     6    24 |     7     9    13 |
emr | emr 2976 |     8     6    15 |     6     7    30 |    10     9    17 |
esa | esa 2976 |     6     5    14 |     7     7    29 |     9    10    15 |
gfz | gfz 2976 |     5     5    12 |     5     8    25 |     9     9    17 |
grg | grg 2880 |     6     6    12 |     8    35    35 |    12    10    20 |
igr | igr 2976 |     5     4    13 |     5     6    26 |     8     9    14 |
igs | igs 2976 |     6     4    12 |     5     6    27 |     8     9    15 |
jpl | jpl 2976 |     7     5    14 |     8     9    30 |     8     9    16 |
mit | mit 2976 |     8     5    15 |     5     7    25 |     9     7    16 |

Table 5.1915.6   GPS week: 1915   Day: 6   MJD: 57655.0

CENT| CLK EPO  |        BRUX       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3063 |     4     2     9 |     6     9    20 |     8    11    19 |
emr | emr 2976 |     8     6    15 |     8     9    23 |     9     9    16 |
esa | esa 2976 |     6     4    13 |     7     8    22 |     9    11    20 |
gfz | gfz 2976 |     5     3    11 |     8    10    22 |     9    10    18 |
grg | grg 2976 |     5     4    13 |     7    10    27 |    11    11    24 |
igr | igr 2976 |     5     4    12 |     7     8    22 |     9    10    18 |
igs | igs 2976 |     5     3    12 |     7     8    21 |     9    10    18 |
jpl | jpl 3071 |     6     5    16 |     6     9    21 |     9    10    18 |
mit | mit 2976 |    10     9    16 |     8    12    29 |    10    12    23 |


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 6.1915   GPS week: 1915   MJD: 57649.500-57655.500

                                                         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 |      14      23     -38      76     -4 |      24     35
            |      16      12      75      33      6 |       2
emr   uuuux |      44       8      -7      83     26 |      59     69
            |      43      23      51     100     28 |      10
esa   uuuuu |       4     -21      21      -8      3 |      26     36
            |       8      23      46      29      3 |       1
gfz   uuuuu |     -10     -27     117    -224     -1 |      32     41
            |      11      23     136      76      4 |       2
grg   uuuuu |       0      -7      23      93      2 |      -1     25
            |      14      19      30     103      4 |       3
igr   xxxxx |     -13      16      10      29      0 |      -2     27
            |      12      13      24      37      4 |       2
irf   xxxxx |      17       6     -20     -24     15 |       7     23
            |       9       8      24      26     18 |       4
jpl   uuuuu |     -26      -1      26      43     15 |      42     50
            |      20      29      43      28      9 |       3
mit   uuuuu |      -3      45     -71    -120     -2 |      29     37
            |      15      18      36      72      4 |       3
ngs   uuuuu |     -13     -12     -10      26     -5 |      20     33
            |      25      39      48     100      8 |       2
sio   uuuux |       5      34    -138      13    -12 |     109    112
            |      23      38      81      54      4 |       6


Table 7.1915.0   GPS week: 1915   Day: 0   MJD: 57649.500

                                                         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 |       6      24     -33      34      5 |      27     35
emr   uuuux |      10      31     -53     112     60 |      49     60
esa   uuuuu |      -8       7      71      53      1 |      28     35
gfz   uuuuu |      -3     -42     147    -119     -3 |      36     41
grg   uuuuu |      10     -16      27      28     -5 |       5     19
igr   xxxxx |     -34      26      40      29     -1 |       1     22
irf   xxxxx |       9      -1     -29      -9     31 |       2     20
jpl   uuuuu |      10     -17     -17      60      5 |      46     52
mit   uuuuu |       7      50     -94     -91      0 |      34     38
ngs   uuuuu |     -34     -64      15    -127      9 |      22     33
sio   uuuux |      16      66    -202     -77     -8 |     118    120

Table 7.1915.1   GPS week: 1915   Day: 1   MJD: 57650.500

                                                         AC LOD  AC LOD
CENT  FLAG  |   Xpole   Ypole     Xrt     Yrt    LOD |    BIAS  BIAS RMS
            |   [uas]   [uas]   [uas/d] [uas/d]  [us]|    [us]    [us]
------------+----------------------------------------+------------------
cod   uuuuu |      22      24      56     117     -3 |      24     36
emr   uuuux |     138      22      27     290    -23 |      51     62
esa   uuuuu |       6     -30     -34      -5      8 |      25     36
gfz   uuuuu |      -5     -31     298    -210      3 |      32     41
grg   uuuuu |       8       3     -10     -91     -2 |       0     25
igr   xxxxx |       5      15      15      79      0 |      -2     27
irf   xxxxx |      16      14     -52     -20     42 |       1     21
jpl   uuuuu |     -51     -38     -26      21      2 |      41     50
mit   uuuuu |     -18      48    -124     -88     -3 |      30     38
ngs   uuuuu |      -6      27     -42      22     -1 |      21     33
sio   uuuux |     -16      51    -192     -10    -18 |     114    117

Table 7.1915.2   GPS week: 1915   Day: 2   MJD: 57651.500

                                                         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 |      38      11     -84     104    -12 |      25     36
emr   uuuux |      26      17     -21      68     57 |      51     62
esa   uuuuu |      -3     -15      -7     -45      6 |      26     36
gfz   uuuuu |     -28     -60     303    -286      2 |      33     42
grg   uuuuu |      19     -21      44      70      2 |       0     25
igr   xxxxx |     -16      -8      21     -27      0 |      -2     27
irf   xxxxx |      27       4      16       2     22 |       6     24
jpl   uuuuu |     -34      16      42      -5     24 |      40     49
mit   uuuuu |      26      27     -28     -21     -3 |      30     37
ngs   uuuuu |     -34      -1     -64      71     -8 |      22     33
sio   uuuux |      21      40    -193      79    -10 |     112    115

Table 7.1915.3   GPS week: 1915   Day: 3   MJD: 57652.500

                                                         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       6     -17      50     -7 |      24     36
emr   uuuux |      16      28     -90      80     35 |      59     69
esa   uuuuu |       7     -28      81     -15      4 |      27     37
gfz   uuuuu |     -16     -18      58    -225     -6 |      33     42
grg   uuuuu |     -22     -27      69     134      2 |      -1     25
igr   xxxxx |     -11      26      32      52     -7 |      -2     26
irf   xxxxx |      14      -4       7       2     14 |       8     24
jpl   uuuuu |     -13      46     -14      68     26 |      41     50
mit   uuuuu |      -4      30     -22     -67      3 |      29     37
ngs   uuuuu |      14     -66      21     -54    -11 |      22     33
sio   uuuux |     -34      69    -207      68    -10 |     110    113

Table 7.1915.4   GPS week: 1915   Day: 4   MJD: 57653.500

                                                         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 |      -1      41    -164      45      2 |      22     35
emr   uuuux |      38       4      41      28     19 |      62     71
esa   uuuuu |       5     -57      38     -15      0 |      25     36
gfz   uuuuu |       4      11      25    -129      0 |      30     40
grg   uuuuu |      -5      15       6     221      4 |      -4     26
igr   xxxxx |      -3      13      -8      61      4 |      -5     28
irf   xxxxx |      18      19     -28     -32     10 |       8     24
jpl   uuuuu |     -31     -14      57      73     17 |      39     48
mit   uuuuu |     -11      72     -83    -214     -1 |      27     36
ngs   uuuuu |       2     -17      54     -12    -14 |      19     33
sio   uuuux |      -5      44    -104      -8    -13 |     105    109

Table 7.1915.5   GPS week: 1915   Day: 5   MJD: 57654.500

                                                         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      33      38      99     -9 |      20     33
emr   uuuux |      38     -14      50      15     22 |      67     76
esa   uuuuu |      17       6     -27     -14      1 |      24     34
gfz   uuuuu |     -22     -36       6    -307      4 |      28     38
grg   uuuuu |      -6      19     -11     171      7 |      -6     25
igr   xxxxx |     -11      13     -28      14      1 |      -5     28
irf   xxxxx |       6       1     -33     -46     -4 |       9     24
jpl   uuuuu |     -42     -19      69      38     15 |      40     49
mit   uuuuu |      -9      28     -78    -187     -9 |      25     34
ngs   uuuuu |      14      14     -71     137     -4 |      16     31
sio   uuuux |      23     -36      -7      41    -16 |     102    105

Table 7.1915.6   GPS week: 1915   Day: 6   MJD: 57655.500

                                                         AC LOD  AC LOD
CENT  FLAG  |   Xpole   Ypole     Xrt     Yrt    LOD |    BIAS  BIAS RMS
            |   [uas]   [uas]   [uas/d] [uas/d]  [us]|    [us]    [us]
------------+----------------------------------------+------------------
cod   uuuuu |      22      26     -60      80     -4 |      23     36
emr   uuuux |      38     -30      -3     -10     15 |      76     85
esa   uuuuu |       3     -32      26     -15      3 |      28     38
gfz   uuuuu |      -4     -10     -21    -289     -2 |      32     42
grg   uuuuu |      -7     -22      35     118      6 |      -1     27
igr   xxxxx |     -19      31      -1      -2      6 |      -2     29
irf   xxxxx |      30       9     -22     -67     -9 |      14     27
jpl   uuuuu |     -22      17      69      44     13 |      46     56
mit   uuuuu |     -14      63     -66    -174     -3 |      28     37
ngs   uuuuu |     -48      24      14     145     -8 |      19     34
sio   uuuux |      28       2     -60       0     -8 |     102    105



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