[IGSREPORT-22211] Wk 1761 IGS Final Orbits

IGS ACC igs.acc at noaa.gov
Fri Oct 25 14:29:43 PDT 2013


Author:  AC Coordinator / NOAA NGS

sum-file Version 2.0
Final IGS Orbit Combination - Week 1761   (Oct 06, 2013 - Oct 12, 2013)

Contacts: J. Griffiths (jake.griffiths at noaa.gov)
          K. Choi (kevin.choi at noaa.gov)


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

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

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

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

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

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

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


SOFTWARE:
---------

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

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

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

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

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


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

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

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

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



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

igs1761[0-6].sp3  IGS GPS ephemeris files in SP3 format.
igs1761[0-6].clk  IGS GPS satellite and station clocks in clock RINEX format.
igs1761[0-6].cls  IGS GPS clock combination summary report.
igs17617.erp      Earth Rotation Parameters (ERP) and their rates as well as
                  Universal Time (UT1-UTC) and Length Of Day (LOD) associated 
                  with IGS ephemerides.
igs17617.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   | AMC2 BRMU BRST BRUX CONZ DUBO HERT HOLM KOUC KOUR
                0  |  COD   | METS MKEA MOBS MONP NKLG NYA1 OPMT PDEL REYK RIOP
                0  |  COD   | SYDN TLSE WAB2 KOUC MOBS REYK
                0  |  EMR   | WUHN WUHN
                0  |  ESA   | MATE MCIL MCIL UNSA
                0  |  GFZ   | ARTU ARTU HNLC RIOP
                0  |  GRG   | IRKJ MATE WUHN IRKJ KOUC MATE WUHN
                0  |  MIT   | DARW
                1  |  COD   | ALBH ALGO ALIC AMC2 AUCK BAKO BOR1 BRFT BRMU BRST
                1  |  COD   | BRUX CAS1 CHTI DARW DRAO DUBO GRAS HARB HERT HOB2
                1  |  COD   | HOLB HYDE INVK KARR KOKB KOUR MAC1 MAS1 MAW1 MDVJ
                1  |  COD   | MOBS NANO NICO NRC1 NRIL OPMT PDEL PTBB QAQ1 REUN
                1  |  COD   | REYK RIOP SCH2 SPT0 SSIA TOW2 USN3 WAB2 WILL WROC
                1  |  COD   | XMIS ZAMB INVK MOBS REYK WROC XMIS
                1  |  EMR   | YELL YELL
                1  |  ESA   | CHUR INVK CHUR FLRS INVK
                1  |  GFZ   | CHUR BRAZ REUN
                1  |  GRG   | IRKJ BRAZ CHUR IRKJ
                1  |  MIT   | 4 16 19 21 4 16 21 USNO USNO
                2  |  COD   | ALGO AUCK BAKO BOR1 BREW DAEJ DARW FAA1 GLPS HOB2
                2  |  COD   | HOLB HOLM KOUR MIZU MOBS NKLG NTUS REYK TSKB WAB2
                2  |  COD   | WHIT XMIS YKRO ZAMB REYK
                2  |  ESA   | NTUS NTUS
                2  |  GFZ   | HYDE YELL HYDE
                2  |  GRG   | BRAZ IRKJ KELY NTUS POLV REUN BRAZ GRAZ IRKJ KELY
                2  |  GRG   | KOUR MAW1 NTUS POLV REUN
                2  |  JPL   | YELL
                2  |  MIT   | 4 19 22 19 22 MDVJ TNML CONZ MDVJ TNML
                3  |  COD   | CHUR CONZ GRAZ HOFN JOZ2 KOUC MOBS OPMT TSKB WHIT
                3  |  COD   | WROC XMIS CONZ HOFN JOZ2 KOUC WHIT XMIS
                3  |  EMR   | ONSA YELL CHUR OPMT YELL
                3  |  ESA   | WHIT TIXI WHIT
                3  |  GFZ   | MATE REYK HNLC REYK
                3  |  GRG   | KELY MATE ONSA CHUR GRAZ KELY MAC1 ZIMM
                3  |  JPL   | 10 WHIT
                3  |  MIT   | 24 ALGO AUCK GRAZ HOFN MDVJ ONSA OPMT PDEL SCH2 SYDN
                3  |  MIT   | TIDB USNO WILL AUCK GRAZ HOFN MDVJ PDEL SCH2 SYDN
                3  |  MIT   | TIDB USNO
                4  |  COD   | ALIC BRFT CONZ DGAR FAA1 HERT HOB2 JOZ2 KOUC REUN
                4  |  COD   | REYK SSIA TRO1 WROC XMIS CONZ HERT KOUC REYK TRO1
                4  |  EMR   | 5 12 HERS
                4  |  ESA   | ALIC TRO1
                4  |  GFZ   | NTUS TRO1 DGAR HNLC PIMO
                4  |  GRG   | IRKJ NTUS WUHN BRFT IRKJ WUHN
                4  |  JPL   | 5 12
                4  |  MIT   | 2 4 5 6 9 10 18 23 26 1 2 3 4 5 7 9 10 16 18 19 20
                4  |  MIT   | 22 23 26 CAS1 HOB2 KARR KOUR SYOG TIDB ALGO CAS1
                4  |  MIT   | CRO1 GRAS HLFX HNPT HOB2 KARR MAR6 MDVJ MORP NICO
                4  |  MIT   | NRC1 PRDS SYOG TIDB WILL YEBE
                5  |  COD   | JOZ2 KOUC ONSA XMIS ZIMM JOZ2 KOUC ONSA XMIS ZIMM
                5  |  ESA   | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20
                5  |  ESA   | 21 22 23 24 25 26 27 28 29 31 32 1 2 3 4 5 6 7 8
                5  |  ESA   | 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25
                5  |  ESA   | 26 27 28 29 31 32
                5  |  GFZ   | ZIMM HNLC ZIMM
                5  |  GRG   | KELY WTZR WUHN DAEJ DARW IRKJ KELY NRMD NTUS WTZR
                5  |  GRG   | WUHN
                5  |  MIT   | 19 22 BJFS TWTF BAKO BJFS HOB2 MDVJ TWTF
                6  |  COD   | ABPO ALGO ALIC BRAZ CAS1 DARW DAV1 DGAR DUBO GLPS
                6  |  COD   | GLSV HARB HOB2 HOLB HRAO KOUC MAC1 MAW1 MCM4 MDVJ
                6  |  COD   | MIZU MONP NKLG NRMD NTUS REUN REYK SYDN SYOG TWTF
                6  |  COD   | USN3 WAB2 WSRT ZAMB KOUC
                6  |  EMR   | HERS
                6  |  GFZ   | 22 22 KELY SYOG
                6  |  GRG   | USNO WUHN IRKJ KOUC USNO WUHN
                6  |  JPL   | 10
                6  |  MIT   | 29 GOPE MONP PDEL

    
 5. New clock offsets and drifts were estimated for centres showing reference
    clock resets. Note that only the largest clock offset and drift are output
    to the summary file. However, the clock combination and the listed RMS
    include all the clock segments. In summary, the following clock
    shifts/resets were noticed and accounted for:
    
               Day | Centre |  Time  |  Jump
               ----+--------+--------+-------------
                1  |  GRG   | ~08:05 | ~ -0.18 ns
                2  |  GRG   | ~09:49 | ~ -0.14 ns
                4  |  GRG   | ~10:05 | ~ 0.19 ns
                4  |  MIT   | ~00:00 | ~ -0.15 ns
                5  |  MIT   | ~00:00 | ~ 1.40 ns
                6  |  GRG   | ~07:10 | ~ -0.14 ns
                6  |  MIT   | ~22:50 | ~ -0.10 ns

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

 7. 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 |   -1.7     .0   -1.2     -44     58     27     .19
       EMR  |   0 |    2.2    4.5    8.2     -16     14     -8    -.07
       ESA  |   0 |    4.6    1.9  -10.0       0      1     29    -.08
       GFZ  |   0 |    -.1     .2   -1.4     -21    -13      9     .07
       GRG  |   0 |    7.2     .5   -5.3     -21     42      4     .11
       JPL  |   0 |    1.1    3.3   13.3     -75     24      4     .36
       MIT  |   0 |    2.1    -.5    4.7     -18     28    -37     .28
       NGS  |   0 |    3.5  -10.5    5.8     -58     -1     -2     .54
       SIO  |   0 |    4.7    1.6   18.5      -6     12   -109     .06

       COD  |   1 |   -1.4    -.3    -.7     -49     57     20    -.06
       EMR  |   1 |    -.5    5.5   12.5     -10      9     -8    -.09
       ESA  |   1 |    4.9    5.6  -13.0       0    -14     30    -.13
       GFZ  |   1 |    -.3     .6   -1.4     -11      0      1    -.13
       GRG  |   1 |    4.0     .6  -13.0     -21     12      6     .21
       JPL  |   1 |    4.9   10.8   16.5     -67      8      8     .23
       MIT  |   1 |    3.7    -.3    7.8     -22     21    -40    -.06
       NGS  |   1 |    3.9   -3.5    9.2     -43     -7     19     .40
       SIO  |   1 |    3.2    3.9   17.7      53     25     19    -.19

       COD  |   2 |   -2.2    -.2   -1.9     -43     51     15    -.04
       EMR  |   2 |   -1.7   10.5    5.1     -15      8     -5    -.01
       ESA  |   2 |    1.6    4.9  -16.8     -49     15     34    -.36
       GFZ  |   2 |     .1     .6   -1.0     -13     -3      7    -.40
       GRG  |   2 |    3.6    2.7   -5.3     -27     26    -12     .19
       JPL  |   2 |    8.6    6.3   16.1     -96      5      7    -.20
       MIT  |   2 |    1.0    2.6    9.9      18     45    -45     .0 
       NGS  |   2 |    5.6    -.9   10.4     -54    -12     27     .24
       SIO  |   2 |    3.4    3.9   20.2      91     20    140    -.20

       COD  |   3 |   -1.5    -.7    -.9     -51     31     16    -.03
       EMR  |   3 |    3.1   13.2    9.4     -10      1    -18    -.03
       ESA  |   3 |    2.7    3.1  -13.0     -21      5     33    -.18
       GFZ  |   3 |     .3     .4    -.6     -19    -21     11    -.36
       GRG  |   3 |    5.6    3.4  -12.7     -21     28    -11     .20
       JPL  |   3 |    6.6    2.6   16.9    -106     30     17     .11
       MIT  |   3 |    5.6    6.1    8.8     -11     19    -44     .16
       NGS  |   3 |    5.7    -.9   10.3     -56    -14     24     .27
       SIO  |   3 |    2.0    5.4    7.8      87     -4    135    -.12

       COD  |   4 |    -.4    -.4   -1.0     -58     39     12     .03
       EMR  |   4 |    4.5    9.7    7.9     -10      3    -11    -.0 
       ESA  |   4 |    3.1    6.6  -10.8      -1    -28     29     .03
       GFZ  |   4 |     .5     .2   -1.0     -15     -7      8     .10
       GRG  |   4 |    9.7    5.7  -15.6     -28     34      6     .33
       JPL  |   4 |   10.6   13.1   10.9     -60    -15    -23     .29
       MIT  |   4 |    4.6    4.3    7.6     -13     23    -27     .13
       NGS  |   4 |    8.3   -2.6    5.8     -22    -20     39     .30
       SIO  |   4 |     .9    6.8   19.8     100     50    106    -.06

       COD  |   5 |   -1.2    -.4   -1.2     -63     38      8     .0 
       EMR  |   5 |   -4.0   11.7    6.5     -18      7    -10    -.04
       ESA  |   5 |    5.4    6.5   -8.9     -16     -8     36    -.19
       GFZ  |   5 |    -.4     .4   -1.3     -23     -4     13    -.04
       GRG  |   5 |    5.9    2.2  -10.3     -42     13     -3     .50
       JPL  |   5 |    1.8   10.2   14.8     -34     29    -17     .09
       MIT  |   5 |    4.0     .9   13.0     -19     30    -22     .05
       NGS  |   5 |    3.8    1.1   19.8     -91    -20     17     .21
       SIO  |   5 |    2.7    1.8   15.3      55      5     47    -.11

       COD  |   6 |   -1.4    -.2    -.9     -67     17      2     .0 
       EMR  |   6 |     .2    5.9   11.3      -8     15    -16    -.14
       ESA  |   6 |    2.8    4.4   -7.9     -19      6     35    -.15
       GFZ  |   6 |     .1     .0   -1.6     -17    -10     12     .10
       GRG  |   6 |    -.2   -1.4   -5.2     -31      0     -1     .41
       JPL  |   6 |    8.4    6.5    8.6     -45     -3     14     .42
       MIT  |   6 |    2.3    -.8   12.6      -6     19    -32     .18
       NGS  |   6 |  -10.5   -1.6    8.0     -57     29    -69     .27
       SIO  |   6 |     .9   -3.5   12.2     -53      0    -81    -.12


 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 1.1761.a). It also displays the computed satellite
position sigmas for the combined orbits (Table 1.1761.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 2.1761.[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 3.1761.[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 5.1761.0-6). 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 1761 summary.                       (Oct 06, 2013 - Oct 12, 2013)

Table 1.1761.a   GPS week: 1761   MJD: 56571.000-56577.000

         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  247|    1     0     3   -15    13    20   .11   10   10 |    -834    -281     21    139
        |    0     1     0    15    19    14   .01           |     464     618
emr   79|   -1     2     6     1   -11     7   .06   15   15 |    1966      45     18    154
        |    1     2     0    10    15    13   .04           |    1210    1122
esa  150|    0     0    -1     0    -2    -3  -.20    6    6 |   -1238     897     22    137
        |    0     0     0    19    13    14   .03           |     631    1561
gfz  193|   -2     1    -4    -3     0     2   .09   11   10 |     -21     235     13    119
        |    0     0     1     5    18    11   .03           |     281     328
grg  188|    1     1    -4     6     1     9   .35   13   13 |      -8      82     17    337
        |    0     1     1    23    17    11   .04           |     260     341
igr  n/a|    0     0     0    -8    21    -4  -.34    4    4 |   -6804     378     16    100
        |    0     0     1     7    16     5   .02           |    1421     890
jpl   80|   -2     0     0     6    -7     4   .11   14   13 |    1587     139     18    168
        |    2     1     1    34    18    19   .02           |    1178     902
mit  299|    0    -2     0    13   -17    -1  -.13   11   10 |    -261      87     29    285
        |    0     1     0    36    28    17   .03           |     306     316
ngs  236|    0     0     3   -15    15   -28   .04   11    9 |  192674 2003191   1759   3541
        |    1     0     1    37    39    18   .03           | 1818974 3540679
sio  449|    0     0    -1    60     6    21  -.66   19   21 |     ---     ---    ---    ---
        |    0     1     0    51    31   118   .02           |     ---     ---


Table 1.1761.b   GPS week : 1761   MJD: 56571.000-56577.000   

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

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



Table 2: Daily transformation of each centre to the combined IGS orbit and
         clocks for each day of the week. The transformation displayed is the
         result of the combination after the AC orbits were pre-aligned using
         the SINEX rotations from above. Prior to Wk 1702, AC ERP rotations
         used in the pre-alignment were also displayed.
         WRMS - RMS weighted by the centres SP3 header accuracy codes.
         STA  - Number of stations in the daily solutions.
   
Table 2.1761.0   GPS week: 1761   Day: 0   MJD: 56571.000                            

CENT STA|   DX    DY    DZ    RX    RY    RZ   SCL  RMS  WRMS|    TOFT   TDRFT   SDEV    RMS
        |  [mm]  [mm]  [mm] [uas] [uas] [uas] [ppb] [mm] [mm]|    [ps]  [ps/d]   [ps]   [ps]
--------+----------------------------------------------------+------------------------------
cod  246|    0     0     4   -29    16    36   .12   10   10 |   -1308     267     21    130
emr   80|   -1     0     6     3    -2     0   .08   16   16 |    1712    -342     14    146
esa  150|    0     0    -1    -2     1     5  -.24    6    6 |   -1840    2334     10    184
gfz  194|   -2     2    -1   -10   -10     5   .07    9    9 |    -199     200     10     96
grg  187|    2     1    -4     9    16     7   .31   12   12 |      35     -68     13    137
igr  n/a|    0     0     0     0    10    -5  -.37    4    4 |   -7670     194     16     99
jpl   80|   -1     0     0   -14   -30     0   .12   14   14 |    1297     -13     14    170
mit  298|    0    -1     0     2    16   -34  -.10   11    9 |     126    -231     24    274
ngs  238|    0     0     0    31   -15   -26   .06    9    8 |   -1304     279   1944   3255
sio  452|    1     0    -1    -6    15  -136  -.66   19   18 |     ---     ---    ---    ---

Table 2.1761.1   GPS week: 1761   Day: 1   MJD: 56572.000                            

CENT STA|   DX    DY    DZ    RX    RY    RZ   SCL  RMS  WRMS|    TOFT   TDRFT   SDEV    RMS
        |  [mm]  [mm]  [mm] [uas] [uas] [uas] [ppb] [mm] [mm]|    [ps]  [ps/d]   [ps]   [ps]
--------+----------------------------------------------------+------------------------------
cod  245|    1     0     2   -19     3    24   .11    9    9 |   -1318     469     23    141
emr   79|   -1     0     6    12   -27     9   .07   16   16 |    1033    -976     16    150
esa  150|    0     0    -1    18   -24    -2  -.21    6    6 |   -1352   -1992     10    125
gfz  193|   -2     1    -3    -3    25    10   .05   10   10 |    -374     517     13    114
grg  189|    3    -1    -4   -19    13    25   .30   14   14 |    -248     345     18    415
igr  n/a|    0     0     0   -10     8    -7  -.34    4    4 |   -7880    -593     15    107
jpl   80|   -1     0     0   -24   -17   -17   .13   13   13 |     808    -834     17    174
mit  300|    0    -1     0   -27    -3   -12  -.09   10    8 |    -659     372     28    311
ngs  237|    0     0     1    21    58   -28   .09   11   10 | -823225 2561888   1992   3776
sio  446|    0     0     0    28    32    -6  -.66   19   19 |     ---     ---    ---    ---

Table 2.1761.2   GPS week: 1761   Day: 2   MJD: 56573.000                            

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|    1     1     3   -14    19    29   .11   10   10 |    -944    -114     20    158
emr   80|   -1     3     5    -7   -16    19   .11   15   15 |     637     737     15    181
esa  150|    0     0    -1   -36    -2   -12  -.21    5    5 |   -1716    1767     10    143
gfz  191|   -2     1    -3    -4   -13     1   .13   10   10 |    -235     645     13    153
grg  189|    1     0    -4    36     0    11   .32   12   12 |     -13    -119     16    602
igr  n/a|    0     0     0   -15     5    -2  -.34    4    4 |   -8327    1100     16    120
jpl   80|   -2    -1     0   -15    -8    38   .10   14   13 |      95     915     16    187
mit  300|    0    -1     0    70     5    -7  -.11    9    8 |     -48      22     21    302
ngs  239|    1     0     3   -21     6   -59   .01   10    9 |   -1045      56   1667   3317
sio  437|   -1     2    -2   121     9   148  -.62   18   21 |     ---     ---    ---    ---

Table 2.1761.3   GPS week: 1761   Day: 3   MJD: 56574.000                            

CENT STA|   DX    DY    DZ    RX    RY    RZ   SCL  RMS  WRMS|    TOFT   TDRFT   SDEV    RMS
        |  [mm]  [mm]  [mm] [uas] [uas] [uas] [ppb] [mm] [mm]|    [ps]  [ps/d]   [ps]   [ps]
--------+----------------------------------------------------+------------------------------
cod  248|    2     0     4    -8    34     8   .11   10   10 |   -1127      70     21    130
emr   80|    0     1     6    -7    15    21   .06   16   16 |     883    1868     17    151
esa  150|    0     0     0    -2    20   -24  -.18    6    6 |   -1579    1938      9    128
gfz  192|   -2     1    -5    -3    11   -20   .10   11   11 |     -98     443     13    104
grg  187|    1     2    -6    32    12    21   .39   13   13 |    -441     676     16    284
igr  n/a|    0     0     0    -8    34     0  -.33    5    5 |   -7722    1724     16     81
jpl   80|   -2     0     0    78   -26    22   .08   15   14 |     704    1419     19    166
mit  300|    0    -1     0    -5   -56     7  -.12   11   10 |    -371     406     26    278
ngs  235|    0     0     3   -65   -24     2   .03   10   10 |   -1131     163   1462   3624
sio  452|    0     1    -1    85   -38   151  -.66   19   23 |     ---     ---    ---    ---

Table 2.1761.4   GPS week: 1761   Day: 4   MJD: 56575.000                            

CENT STA|   DX    DY    DZ    RX    RY    RZ   SCL  RMS  WRMS|    TOFT   TDRFT   SDEV    RMS
        |  [mm]  [mm]  [mm] [uas] [uas] [uas] [ppb] [mm] [mm]|    [ps]  [ps/d]   [ps]   [ps]
--------+----------------------------------------------------+------------------------------
cod  249|    2    -1     4   -18    25    28   .11   12   12 |    -559    -976     23    123
emr   80|    0     4     6    15     0    -2   .05   15   15 |    3006    -136     45    156
esa  150|    1     0    -2    23    -9    -7  -.19    6    6 |    -825     255     13     95
gfz  192|   -2     0    -4     7    19    -1   .09   10   10 |     116    -308     19    103
grg  189|    2     2    -7   -26   -19     4   .38   13   12 |     280    -349     29    135
igr  n/a|    0     0     0     3    50    -6  -.34    5    5 |   -5905     257     17     76
jpl   80|   -7    -1     1     9    11    -6   .11   14   13 |    2446     -54     30    166
mit  300|    1    -2     1     3    -3    16  -.18   11   10 |    -631    -286     45    301
ngs  235|    1     1     3   -59   -26   -32   .06   11   10 | -999999 9239911   1519   3362
sio  452|    0     0    -1   115    51    89  -.69   19   24 |     ---     ---    ---    ---

Table 2.1761.5   GPS week: 1761   Day: 5   MJD: 56576.000                            

CENT STA|   DX    DY    DZ    RX    RY    RZ   SCL  RMS  WRMS|    TOFT   TDRFT   SDEV    RMS
        |  [mm]  [mm]  [mm] [uas] [uas] [uas] [ppb] [mm] [mm]|    [ps]  [ps/d]   [ps]   [ps]
--------+----------------------------------------------------+------------------------------
cod  250|    2    -3     2    13    17    -6   .13   10   10 |    -484    -562     20    154
emr   80|   -3     6     6     3   -18   -14   .05   16   16 |    3776   -1443     12    169
esa  150|    1     0    -3     6    -6    20  -.18    6    6 |     -17       4     99    165
gfz  194|    0     0    -4    -6    -4    13   .09   11   10 |     410     150     14    148
grg  189|    2     2    -5     0   -23    -9   .39   17   14 |     259     158     15    447
igr  n/a|    0     0     0   -12    22   -14  -.31    5    5 |   -4749    -767     18    129
jpl   80|   -1    -2    -1     0    14   -10   .11   14   14 |    3401   -1056     18    160
mit  300|    1    -3     0    -5   -29    13  -.14   13   12 |    -224     449     29    191
ngs  236|    0     1     6   -23    38   -21   .01   10    9 | 4175425 -999999   1785   3692
sio  451|    0    -1    -1    71     0    24  -.66   20   21 |     ---     ---    ---    ---

Table 2.1761.6   GPS week: 1761   Day: 6   MJD: 56577.000                            

CENT STA|   DX    DY    DZ    RX    RY    RZ   SCL  RMS  WRMS|    TOFT   TDRFT   SDEV    RMS
        |  [mm]  [mm]  [mm] [uas] [uas] [uas] [ppb] [mm] [mm]|    [ps]  [ps/d]   [ps]   [ps]
--------+----------------------------------------------------+------------------------------
cod  249|    1     0     2   -34   -26    18   .11   12   11 |    -101   -1127     19    138
emr   80|   -2     4     7   -12   -26    20  -.01   14   14 |    2715     610     13    126
esa  150|    1     0    -1   -10     1    -6  -.23    6    6 |   -1337    1978      9    120
gfz  196|   -2     0    -6    -6   -24     6   .11   11   10 |     228       2     14    115
grg  191|    0     1    -1    11    13     5   .35   12   12 |      69     -68     15    345
igr  n/a|    0     0    -2   -11    18     3  -.33    5    4 |   -5380     735     15     93
jpl   80|    0     0     1    10     3     7   .09   13   13 |    2363     602     15    156
mit  300|    1    -4     0    60   -52     4  -.17   15   13 |     -20    -120     30    343
ngs  235|   -1     0     2     6    68   -36   .01   12   10 | -999999 3220041   1945   3761
sio  457|    0    -1    -2     7   -24  -121  -.70   20   22 |     ---     ---    ---    ---

       
       
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 3.1761.0   GPS week: 1761   Day: 0   MJD: 56571.000                            

        Weighted Average                                            Orbit Dynamics (7 days)
 PRN  |  cod  emr  esa  gfz  grg  igr  jpl  mit  ngs  sio  IGS |   cod  emr  esa  gfz  grg  igr  jpl  mit  ngs  sio   IGS
------+--------------------------------------------------------+---------------------------------------------------------
   1  |   11   10    6    7   11    5   12   15   11   14    4 |    33   30   25   27   32   20   32   23   29   21    26
   2  |   12   22   11   13   13    4   16   10   10   37    4 |    21   26   19   30   26   18   22   24   24   33    20
   3  |    9   12    4   11    8    5   12   12    8   15    3 |    22   21   23   29   27   20   25   24   28   21    23
   4  |    7   11    5    7    9    3    9    9    8   20    3 |    17   21   17   21   18   15   22   18   19   22    17
   5  |   10   19    8    8   15    6   23   10    9   15    4 |    81   78   79   76   82   76   80   80   82   77    78
   6  |   10   12    5   10    8    4   10    7    6   16    3 |    44   44   45   45   48   42   46   45   45   44    45
   7  |   10   18    6   11   11    3   16    7   10   13    4 |    27   23   18   20   29   14   23   19   24   16    19
   8  |    8   15    6   10    9    5   10   13    7   23    3 |    22   25   19   19   22   17   26   21   22   25    18
   9  |    7   15    6    9    6    5    9    7    7   19    3 |    20   24   16   16   19   14   24   17   21   21    17
  10  |    7   17    7    8   15    6   13    8    9   23    4 |    63   68   68   66   65   66   68   64   63   64    65
  11  |   10   14    5    7   14    4   11   13    9   10    3 |    46   50   49   53   61   46   53   47   47   46    49
  12  |    9   21    6    8   14    4   22    8    9   17    4 |    26   26   17   24   31   15   25   23   24   15    21
  13  |    8   16    4   11   12    3   14    6    9   16    3 |    28   33   26   32   37   24   33   27   28   24    28
  14  |   11   18    6    9   11    5   16   14    9   17    4 |    33   30   31   34   33   28   33   40   32   25    31
  15  |   11   15    6    5   11    5   18    6   11   19    4 |    28   29   24   27   31   22   31   25   29   21    25
  16  |   16   21    5   12   17    4   17   13    8   16    5 |    23   23   17   23   27   15   20   22   24   15    18
  17  |   16   18    7   10    9    4   16   13   10   28    4 |    26   28   27   34   29   23   30   31   26   25    26
  18E |    9   15    7   11   14    3   12   10    9   21    4 |    29   30   25   29   34   26   31   27   29   20    27
  19  |   10   16    5    9    7    4   12   15    8   22    4 |    27   28   27   34   29   25   30   27   30   22    27
  20E |    9   14    5   10   13    3   16    7   13   13    4 |    28   24   22   26   28   20   24   21   30   14    23
  21  |    9   13    3    8   17    2   15    8    8   14    3 |    26   26   19   26   32   17   25   21   24   17    22
  22E |    8   13    5   10   12    3   12   11    8   19    3 |    38   37   35   36   37   35   37   34   34   34    35
  23  |   12   17    5   11    9    5   17    9   10   28    4 |    26   27   20   26   27   18   28   23   25   25    22
  24  |   13   15    6    8    9    5   12    7   11   19    3 |    22   27   20   23   30   18   30   21   26   24    22
  25  |   10   20    6    8   12    4   11    7    8   16    3 |    24   32   20   21   26   17   26   21   21   20    21
  26  |    9   11    5    6   13    3    9    5    7   14    3 |    26   27   24   28   31   22   26   26   27   20    25
 X27  |    8   12    7    9  ---    3   13   11   12   24    4 |    39   40   45   48  ---   42   47   42   46   37    43
  28  |    8   16    5   10   14    5   13    6    7   17    3 |    19   21   22   28   33   17   24   20   23   17    21
  29  |   13   17    7    9   11    4   16   10    9   26    4 |    31   32   28   33   33   27   34   30   30   30    29
 X30  |    4  ---  ---  ---  ---   28  ---  ---  ---  ---    0 |    50  ---  ---  ---  ---   22  ---  ---  ---  ---    49
  31  |    9   19    6   14   17    6   17   18   14   13    5 |    20   24   17   19   35   15   29   29   28   15    21
  32  |   10   11    6    7   12    4   12   17    9   18    4 |    26   29   24   28   26   22   30   25   31   30    24
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |   10   16    6    9   12    4   14   11    9   19      |T   30   31   28   31   33   25   32   29   31   27    29
 WRMS |   10   16    6    9   12    4   14    9    8   18      |NE  27   28   24   28   31   22   29   26   28   24    26
 MEDI |    9   15    6    9   12    4   13   10    9   17      |MD  26   28   24   28   31   20   30   25   28   22    24

Table 3.1761.1   GPS week: 1761   Day: 1   MJD: 56572.000                            

        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    6   11    4   10   14   10   13    3 |    28   28   22   25   28   21   29   23   26   20    24
   2  |   12   21    6   12   12    6   14    8    8   38    4 |    24   25   14   24   20   12   20   20   16   34    17
   3  |    8   12    5   14   13    3    8    7   15   14    3 |    23   23   23   28   25   20   22   22   25   19    22
   4  |    8   18    4    8   12    4    8   10    9   19    3 |    22   25   16   18   17   13   20   21   19   23    17
   5E |   13   16    7   11   13    5   19   10    9   14    4 |    74   73   71   71   73   69   75   74   76   70    72
   6  |    9   11    7   13   11    3    8    7   15   17    3 |    49   51   53   51   52   47   51   51   49   47    50
   7  |    7   19    7   10   14    3   16    7   12   14    4 |    29   26   21   23   30   16   25   22   22   16    22
   8  |    6   12    5   10   11    4   11   10    7   21    3 |    19   24   19   18   20   15   25   23   21   24    18
   9  |    4   12    4   11    9    4    9    7    8   18    3 |    18   22   16   17   17   13   23   18   19   20    16
  10E |    5   17    5    7   14    6   12    7   11   22    3 |    67   69   66   66   64   67   67   67   69   63    66
  11  |    9   16    7    6   16    4   12   13   10    9    4 |    36   40   33   35   44   30   37   31   35   31    34
  12  |    7   20    8   10   15    5   20    9   12   17    4 |    24   27   17   21   30   14   25   22   22   14    19
  13  |   10   15    6   11   16    3   14    6   12   15    4 |    29   32   24   28   34   21   31   23   20   18    24
  14  |   10   15    6    8   14    6   15   16   11   18    4 |    28   31   24   24   26   21   31   32   26   23    25
  15  |    8   13    5    7   11    4   14    8   11   19    3 |    23   25   17   21   25   15   26   20   22   17    19
  16  |   13   22    5   15   17    3   17   16    9   17    5 |    24   25   18   25   27   14   21   21   19   12    18
  17  |    9   20    5   10   10    3   16   12   11   25    4 |    24   26   19   26   23   16   25   23   20   15    20
  18E |    7   12    5   12   13    4   12   10   10   12    3 |    19   21   15   21   24   14   21   17   21   13    17
  19  |    8   15    6   10   10    3   12   11   10   21    3 |    22   26   21   25   26   17   25   19   19   14    20
  20E |    9   13    5   15   15    4   14    7   10   12    4 |    26   26   21   26   30   19   24   20   25   13    22
  21  |    6   13    3    9   18    3   12    7    7   14    3 |    23   23   16   24   28   14   21   17   22   13    19
  22E |    8   10    6   10   14    4   11    9    7   16    3 |    32   33   28   30   34   29   36   31   34   30    30
  23  |   11   17    5   11   13    4   17    9    9   28    4 |    26   27   20   22   26   17   26   22   22   24    21
  24  |   10   14    5    9   11    4   13    6   13   16    3 |    24   25   21   21   27   17   31   19   24   21    21
  25  |    8   24    7   11   13    5   14    7   11   12    4 |    21   36   17   18   25   15   27   20   18   17    19
  26  |    7   11    3    8   16    3    8    6   12   15    3 |    30   31   28   31   31   26   30   29   31   25    28
 X27  |   10   10    4   19  ---    5   13    8   14   21    4 |    28   30   31   39  ---   27   37   27   32   23    29
  28  |    6   17    4   11   14    4   12    6   10   16    3 |    20   22   19   25   31   15   22   18   21   15    19
  29  |   14   16    7   11   11    5   17    7   13   27    4 |    27   25   19   24   20   17   28   22   24   18    20
 X30  |    3  ---  ---  ---  ---  297  ---  ---  ---  ---    0 |   122  ---  ---  ---  ---   22  ---  ---  ---  ---   123
  31  |    8   19    6   13   19    6   12   18    9   13    4 |    22   28   16   21   37   15   25   25   24   12    20
  32  |    7   13    6    6   16    5   12   15   11   17    4 |    25   29   22   25   25   19   27   23   27   26    22
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |    9   16    6   10   14    4   13   10   11   19      |T   31   30   24   28   30   22   30   26   27   23    28
 WRMS |    9   16    6   10   14    4   13    8   10   19      |NE  29   28   21   25   27   18   27   23   23   20    26
 MEDI |    8   15    5   10   13    4   12    8   10   17      |MD  24   26   21   25   27   17   26   22   22   20    21

Table 3.1761.2   GPS week: 1761   Day: 2   MJD: 56573.000                            

        Weighted Average                                            Orbit Dynamics (7 days)
 PRN  |  cod  emr  esa  gfz  grg  igr  jpl  mit  ngs  sio  IGS |   cod  emr  esa  gfz  grg  igr  jpl  mit  ngs  sio   IGS
------+--------------------------------------------------------+---------------------------------------------------------
   1  |   11   10    6    9   10    3    9   11   10   12    3 |    24   26   19   22   24   18   26   21   25   17    20
   2  |   12   18    5   14   12    5   17    8    8   39    4 |    25   23   19   28   22   18   23   22   23   33    20
   3  |   10   11    4   11    9    5    9    7   10   16    3 |    22   22   18   23   21   19   20   19   27   17    19
   4  |    6   13    5    9   11    4   10    9   10   18    3 |    20   22   15   20   15   16   18   21   20   20    17
   5E |   10   18    6   11   16    6   17    7   11   10    4 |    28   33   25   26   37   25   28   28   27   28    26
   6  |    8   10    5   10    8    3    7   10    7   15    3 |    35   35   33   37   33   34   34   32   37   32    34
   7  |    7   19    4    9   12    3   16    7   10   15    4 |    22   25   18   21   30   16   22   19   24   16    19
   8  |    7   13    6   11   11    5   11   11    5   21    3 |    20   24   18   18   20   16   23   22   20   24    18
   9  |    4   13    5   10    9    4   10    7    7   19    3 |    18   23   15   16   17   13   20   18   17   21    16
  10E |   11   17    6   10   12    5   13    6   14   19    4 |    51   57   54   53   48   54   55   55   57   47    53
  11  |    8   14    5    8   13    4   10    8   10    9    3 |    39   45   39   41   49   36   44   38   36   36    39
  12  |   10   21    7   10   17    5   17    9   11   16    4 |    27   27   19   27   29   20   23   23   29   20    22
  13  |    7   14    4    9   13    4   16    6    7   13    3 |    27   33   24   30   35   23   29   25   22   19    26
  14  |   11   15    6   10   10    6   16   11   11   20    4 |    26   31   28   32   29   25   31   31   27   23    28
  15  |    8   15    4    9   12    3   18    8   12   20    3 |    25   26   20   22   27   19   26   21   23   18    21
  16  |   11   16    6   14   15    4   16   16   10   17    4 |    22   23   15   26   23   15   20   19   22   12    18
  17  |   17   18    4    9   10    4   17   13    8   24    4 |    25   27   23   28   26   22   27   26   20   18    23
  18E |    9   12    6    9   12    3   13    8    9   13    3 |    25   25   21   21   26   19   26   20   23   19    22
  19  |   10   13    6   10    9    3   12   10   13   21    3 |    23   25   21   25   24   18   26   21   24   17    21
  20E |    9   12    5   11   13    4   15    8    8   13    3 |    24   22   19   26   24   17   22   20   21   11    20
  21  |    9   11    4    7   16    3   12   12   10   15    3 |    25   26   20   23   29   17   25   22   23   18    21
  22E |    8   11    6   10    9    4    9    8    6   11    3 |    24   24   23   21   26   21   25   22   22   25    22
  23  |   11   17    6   12   11    4   17    9    8   28    4 |    24   30   23   28   29   20   27   24   19   24    23
  24  |   10   15    7    8    9    5   15    5   13   16    3 |    23   25   19   19   26   18   26   18   27   20    21
  25  |   12   22    5   11   13    4   14    6    9    9    4 |    22   35   18   21   23   17   24   18   22   16    20
  26  |    8   11    5    9   14    3   10    5   14   12    3 |    18   23   17   20   21   18   20   21   28   19    20
 X27  |    8   11    6   12  ---    4   12    8   15   19    4 |    31   32   33   37  ---   33   38   32   36   28    33
  28  |    7   15    4   11   13    3   12    7    8   16    3 |    20   22   20   26   31   16   23   20   20   15    20
  29  |   13   16    5   10   10    4   20   11   11   27    4 |    29   30   23   28   26   24   29   28   28   26    25
  31  |   11   17    5   13   19    6   14   14   13   13    5 |    19   24   17   21   35   15   23   21   26   13    19
  32  |   10   12    6   10   15    5   12   14   12   18    4 |    27   31   26   30   29   23   30   27   28   32    26
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |   10   15    5   10   12    4   14    9   10   18      |T   25   28   22   26   27   21   26   24   25   22    23
 WRMS |   10   15    5   10   12    4   13    8    9   21      |NE  24   27   21   25   26   20   25   23   25   20    22
 MEDI |   10   14    5   10   12    4   13    8   10   16      |MD  24   26   20   26   26   19   26   22   24   20    21

Table 3.1761.3   GPS week: 1761   Day: 3   MJD: 56574.000                            

        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   12    5   11   12    6   11   10    8   13    3 |    25   24   20   25   25   17   24   19   23   20    20
   2  |   13   18    7   16   16    5   17    9   10   39    4 |    22   23   17   27   22   16   23   19   19   34    18
   3  |    8   12    5   10   10    3    8    8    8   18    3 |    21   20   24   27   24   20   23   21   18   20    21
   4  |    4   10    5   10   13    4    9   10    7   20    3 |    18   18   16   20   16   15   18   17   18   21    16
   5E |   11   19    6    9   14    5   23    8   10    9    4 |    25   33   27   28   31   27   33   26   29   29    27
   6  |    9   12    5   11   10    5    9   13   11   21    3 |    65   63   69   66   66   62   65   67   60   69    65
   7  |    7   17    5   12   11    5   18    9   10   13    4 |    28   24   20   26   29   17   26   20   24   18    21
   8  |   10   13    6   11   11    5   12    8    8   21    3 |    21   22   18   20   20   15   25   20   19   25    18
   9  |    7   15    5   10    9    4   10    7    7   18    3 |    21   23   16   20   17   15   20   17   19   20    17
  10E |   11   15    6   13   14    6   14    9   11   18    4 |    62   62   64   65   60   65   65   65   62   61    63
  11  |    6   16    7   10   15    4   11    8    9   14    3 |    41   44   43   47   55   42   46   41   40   39    43
  12  |    9   20    7   11   14    6   23   14   11   17    5 |    23   23   18   24   29   18   25   23   22   21    19
  13  |    9   15    6   11   11    4   14    6   11   15    3 |    31   34   27   35   34   27   34   27   26   23    28
  14  |   17   12    7   11   13    7   17   10   11   24    4 |    33   32   30   32   34   25   31   30   24   26    29
  15  |   12   16    4   11   10    4   18   13   12   20    4 |    25   27   23   23   26   22   27   23   23   19    22
  16  |   15   21    5   12   17    3   15   17   10   18    5 |    20   24   17   23   27   16   19   21   20   15    17
  17  |   13   19    7    8   13    4   17   15   11   23    4 |    23   26   23   30   28   23   30   29   24   21    24
  18E |   12   16    7   12   14    4   17   12    9   13    4 |    28   25   24   28   28   22   26   19   25   22    22
  19  |   10   17    5   17    9    3   13    9   10   22    4 |    27   25   27   37   28   24   27   24   22   20    25
  20E |    8   15    6   12   17    4   13    9    7   12    4 |    27   27   25   30   29   22   24   24   24   18    24
  21  |    9   14    5   10   18    4   14   12   14   15    4 |    24   25   19   26   28   17   25   19   18   19    19
  22E |   10   14    8   10   15    4   13   13   12   15    4 |    26   28   24   27   34   25   31   26   32   28    25
  23  |    9   16    9   13   12    4   17    8   14   29    4 |    26   28   24   29   27   20   29   22   22   26    23
  24  |   14   16    8    9    9    5   15   11    7   13    4 |    26   26   18   20   28   20   32   21   24   20    21
  25  |   13   24    6    9   14    6   17    7   13   10    4 |    21   36   18   20   25   17   28   21   23   18    20
  26  |    7   14    5   11    9    3   10    6   14   11    3 |    34   33   33   33   34   31   32   32   27   29    31
 X27  |    6   10    4   12  ---    4   13    7    8   18    3 |    42   39   44   46  ---   42   46   40   42   36    42
  28  |    8   18    4   11   15    5   13   10    9   13    4 |    17   20   18   26   31   15   21   20   22   17    19
  29  |   11   15    6   11   13    5   16    9   14   26    4 |    29   29   24   34   31   26   30   28   25   30    26
  31  |    9   15    6   16   15    6   13   15   10   14    4 |    20   26   18   24   34   18   25   23   24   18    21
  32  |    8   12    7    9   17    5   11   12   10   20    4 |    22   27   17   22   22   18   26   21   25   24    20
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |   10   16    6   11   13    5   15   10   10   19      |T   28   29   25   30   30   24   30   26   26   26    26
 WRMS |   10   16    6   11   13    5   14   10   10   23      |NE  27   28   24   29   29   23   29   25   25   24    25
 MEDI |    9   15    6   11   13    4   14    9   10   18      |MD  25   26   23   27   28   20   27   23   24   21    22

Table 3.1761.4   GPS week: 1761   Day: 4   MJD: 56575.000                            

        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   12    8    9   10    7   11   10   13   13    4 |    28   27   23   25   25   18   29   19   26   22    22
   2  |   13   19    8   15   12    6   15    9   13   39    4 |    16   21   14   25   20   12   20   17   19   34    15
   3  |    7   10    5    9   14    3    9   10   15   16    3 |    14   17   17   18   24   13   18   17   15   14    15
   4  |    6   11    6   10   13    4   10   11   10   22    3 |    15   18   13   15   13   11   21   17   15   19    13
   5E |   14   17    7   10    9    5   19   10    9    9    4 |    25   27   22   24   27   24   28   22   26   24    23
   6  |    8   11    5   11   12    2    9   10   15   17    3 |    25   28   28   26   31   26   27   31   24   28    26
   7  |    9   16    7   13   12    4   14   10   12   15    4 |    26   24   18   23   29   15   25   23   21   21    20
   8  |   11   10    5   11   11    6   11   11   10   24    3 |    25   24   19   22   23   17   28   23   26   27    21
   9  |   10   10    5   11    9    4   11   10   10   21    3 |    22   23   17   20   20   15   27   19   21   24    18
  10E |   15   14    9   11   13    7   14   15   10   17    4 |    43   44   46   43   39   46   48   45   47   44    43
  11  |    8   14    5    6   14    3   10    8   11   12    3 |    34   41   37   39   50   35   40   35   35   34    37
  12  |   12   22    8   11   13    5   22   17    8   16    5 |    24   26   16   23   31   16   25   28   24   19    19
  13  |   10   14    5   11   14    4   13    8   12   16    4 |    29   31   23   31   33   23   34   23   22   20    25
  14  |   16   15    6    9    9    6   15    9    8   23    4 |    34   27   24   31   27   22   30   26   23   19    25
  15  |   10   16    7   10    9    4   17   11   14   19    4 |    22   25   19   23   26   16   26   22   23   18    20
  16  |   18   19    4   14   16    4   14   15   11   15    5 |    22   21   16   24   28   14   17   21   21   14    17
  17  |   18   17    7    8   13    4   19   12   10   22    4 |    23   26   21   28   29   22   31   26   25   19    22
  18E |    9   12    5   10   12    3   16   11   10   17    4 |    18   18   14   19   24   14   23   19   20   17    15
  19  |   10   13    5    8   23    4   11   10   15   23    4 |    21   24   22   24   42   20   27   22   19   19    22
  20E |   11   11    4   10   17    4   11    8   12   13    3 |    27   24   20   24   24   18   22   21   24   17    21
  21  |    7   12    4    8   16    3   13   13   13   20    4 |    20   22   14   20   29   13   22   17   21   17    17
  22E |    9   11    6    7   13    5   13   11    8   15    3 |    17   20   15   17   23   15   24   17   13   19    15
  23  |   14   16    7   11   11    4   14    8    9   29    4 |    30   28   20   25   25   19   27   20   20   25    21
  24  |   12   15    7    8    9    6   12   13   13   13    4 |    20   28   20   22   30   19   28   26   24   21    22
  25  |   15   22    6   10   11    5   14    9    9    8    4 |    23   32   16   16   24   13   25   17   19   16    17
  26  |   11   10    5    6    9    2    9   11   15    9    3 |    23   23   21   22   23   19   26   22   29   19    21
 X27  |    8    9    5   11  ---    6   12    9   16   19    4 |    26   29   30   31  ---   29   35   29   28   25    29
  28  |   11   15    4   10   14    4   11    8   14   14    4 |    20   23   20   27   33   18   23   22   23   18    21
  29  |   13   16    7   10   12    5   20   10   10   27    4 |    26   25   23   29   25   21   27   25   25   25    23
  31  |    9   13    6   14   16    5   13    9   10   16    4 |    20   23   16   17   33   14   25   20   21   14    18
  32  |   12   12    6    8   17    4   12   14    9   22    4 |    27   36   27   32   26   28   35   31   31   33    28
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |   12   15    6   10   13    5   14   11   11   19      |T   24   25   21   24   27   19   27   23   23   22    21
 WRMS |   12   15    6   10   12    5   13   10   10   24      |NE  23   25   20   24   28   18   26   22   22   21    21
 MEDI |   11   14    6   10   12    4   13   10   11   17      |MD  23   25   20   24   26   18   27   22   23   19    21

Table 3.1761.5   GPS week: 1761   Day: 5   MJD: 56576.000                            

        Weighted Average                                            Orbit Dynamics (7 days)
 PRN  |  cod  emr  esa  gfz  grg  igr  jpl  mit  ngs  sio  IGS |   cod  emr  esa  gfz  grg  igr  jpl  mit  ngs  sio   IGS
------+--------------------------------------------------------+---------------------------------------------------------
   1  |    8   11    7    9   13    5   10   10   13   15    3 |    23   24   21   22   25   15   27   19   22   18    20
   2  |   14   21    9   16   12    5   16   11    9   41    5 |    19   23   15   25   20   13   19   19   15   39    15
   3  |   10    9    4   13   15    3    9    9   15   16    4 |    17   16   14   19   21   13   18   15   13   13    14
   4  |    7   11    6    9   12    4   10   15    7   21    3 |    18   18   14   15   15   11   15   22   13   20    13
   5E |   11   19    7   10   12    6   21   14    8   12    4 |    23   27   21   26   25   22   27   27   22   28    22
   6  |   10   11    5   12   19    3    8   10   14   15    4 |    31   28   29   31   40   28   30   31   24   28    29
   7  |   11   14    5   11   11    4   15    9    9   14    4 |    26   23   14   21   29   13   22   19   19   14    18
   8  |   10   11    7    9   12    5   11   13    8   21    3 |    23   23   19   18   25   15   25   22   21   24    19
   9  |    9   11    6    8   10    4   10   12    6   19    3 |    20   21   15   16   21   12   22   20   18   21    15
  10E |   14   20    8   10   14    8   14   18   14   20    5 |    61   62   61   61   56   60   57   63   61   56    59
  11  |    6   14    5    8   17    3   11    8   10   16    3 |    32   38   33   34   47   31   37   34   28   32    33
  12  |   10   24    7    8   12    7   22   23   12   17    5 |    23   26   17   21   29   16   25   27   24   18    19
  13  |   12   15    5   11   14    5   14   10   10   17    4 |    27   31   19   27   33   20   27   19   23   14    22
  14  |   10   15    5   12   11    4   15   13    8   25    4 |    27   31   25   29   27   22   28   23   24   17    24
  15  |   11   16    4   12   10    3   17   15   11   17    4 |    21   25   17   20   26   15   25   23   17   18    18
  16  |    9   14    4   16   18    3   12   13   12   14    4 |    18   19   14   24   25   13   19   17   18   11    16
  17  |   14   16    8   12    9    6   17   14    7   24    4 |    20   25   19   28   24   18   26   25   18   17    19
  18E |   11   14    5   11   13    3   16   12    8   19    4 |    20   19   16   18   21   13   21   17   18   19    15
  19  |   11   14    8   11   58    7   13   15   12   25    7 |    21   23   20   21   51   18   24   20   18   17    18
  20E |    8   16    5    9   14    4   15    9   10   12    3 |    25   25   18   23   25   15   20   18   25   10    19
  21  |    8   15    5   11   15    3   14   16   10   20    4 |    21   22   15   23   26   12   20   17   17   20    16
  22E |   10   20    5   11   11    3   12   11    8   19    4 |    26   25   22   23   25   21   25   20   26   24    21
  23  |   11   16    8   11   13    4   16    9   10   30    4 |    24   26   17   22   26   14   24   16   21   22    18
  24  |    9   14    5    8   10    5   14   17   11   15    4 |    20   25   19   18   29   17   30   22   22   18    20
  25  |    9   21    5   11   10    5   16   14    7   11    4 |    22   33   18   19   24   15   28   21   19   15    19
  26  |    8   13    5    9    8    3   10   13    8    9    3 |    26   24   23   26   24   22   23   29   21   24    23
 X27  |    7    9    5   14  ---    5   13    9   11   18    4 |    27   32   28   33  ---   29   39   29   26   27    29
  28  |   10   17    4   13   13    4   12   11    8   13    4 |    20   23   19   24   30   14   21   22   19   16    19
  29  |   12   17    6    7   11    6   16   13   10   27    4 |    23   23   21   24   22   18   25   24   20   24    20
  31  |    8   13    5   12   14    5   13   12    9   17    4 |    19   22   15   19   32   14   25   17   20   13    18
  32E |   10   13    5   10   20    4   12   11    9   22    4 |    38   36   33   37   34   33   39   35   35   37    35
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |   10   16    6   11   17    5   14   13   10   20      |T   24   26   21   24   28   19   26   23   22   21    21
 WRMS |   10   16    6   10   14    5   14   12    9   21      |NE  22   24   19   23   27   17   24   22   20   20    19
 MEDI |   10   14    5   11   12    4   14   12   10   17      |MD  23   25   19   23   25   15   25   22   21   19    19

Table 3.1761.6   GPS week: 1761   Day: 6   MJD: 56577.000                            

        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   10    6   11    8    4   11    9   10   18    3 |    29   29   22   27   26   20   29   23   23   21    24
   2  |   15   19    9   19   11    4   14   12   12   41    5 |    22   24   16   33   22   17   19   22   19   39    18
   3  |   10    9    5    9   12    4    9   10   11   15    3 |    19   20   16   25   24   16   20   18   16   17    18
   4  |    8    9    5   12   11    4    9   13   11   23    3 |    20   18   16   19   15   13   17   19   15   23    15
   5E |   10   16    5    9   19    4   19   14   12   12    5 |    29   28   24   27   27   26   28   27   26   29    25
   6  |   10    9    4    8   11    2    8   11   15   14    3 |    26   28   26   30   28   25   27   28   24   26    26
   7  |    9   14    5   13   10    4   13   10   10   14    3 |    27   24   18   23   30   16   23   23   21   20    21
   8  |   10   11    6    7    9    5   11   15    7   24    3 |    26   25   22   22   25   19   25   26   21   28    22
   9  |    9   11    5    7    8    4   10   14    8   21    3 |    20   24   16   17   20   15   21   22   17   21    17
  10E |   16   19    8   13   11    7   15   22   16   20    5 |    61   62   59   59   57   60   60   64   59   60    58
  11  |   12   14    5   10   12    4   11    9   10   14    3 |    40   47   44   50   56   43   51   47   39   44    45
  12  |   12   23    8   11   14    6   26   27   17   15    6 |    23   28   19   25   30   19   27   26   21   21    20
  13  |    9   13    5    8   10    3   13   11   10   17    3 |    29   34   26   34   37   26   35   28   25   24    29
  14  |   21   15   10    9   11    4   14   10   10   25    4 |    42   35   33   37   35   30   34   35   35   25    34
  15  |    8   14    7   10    9    6   16   15   16   17    4 |    25   29   22   26   31   22   28   29   27   23    25
  16  |   15   14    6   11   17    4   12   14   11   16    4 |    26   21   14   26   25   15   17   19   19   18    17
  17  |   11   16    6   14    8    4   14   14   15   27    4 |    26   30   26   38   30   25   29   35   22   25    27
  18E |    9   10    7   10   14    4   14   13   11   12    4 |    21   20   15   23   26   15   19   21   19   15    18
  19  |   12   14    5   10   13    2   10   14   12   24    4 |    24   25   23   30   28   21   26   24   22   22    23
  20E |   11   12    6    9   14    5   12   15   15   12    4 |    30   25   23   27   25   20   23   30   27   17    24
  21  |    9   14    6    8   15    4   13   13   11   19    4 |    21   24   17   23   30   14   22   15   18   19    18
  22E |    9   14    7    7   13    4   11   12    7   16    3 |    29   29   25   27   29   25   25   27   26   24    26
  23  |   12   15    7   10   11    5   15   14   15   30    4 |    24   27   19   27   28   17   28   22   23   26    21
  24  |   13   13    6   21   10    4   13   22   11   17    5 |    24   28   23   23   30   22   30   25   24   22    23
  25  |   10   20    6   11   10    5   13   20   12    9    4 |    22   36   21   22   26   18   28   25   19   19    22
  26  |    8   14    5   10   10    3   10   16   18   10    4 |    23   29   25   28   28   24   25   33   24   25    25
 X27  |    9    8    4   10  ---    4   14   11   14   21    4 |    37   41   41   44  ---   41   49   42   37   36    41
  28  |    8   16    4    9   13    6   12   13    7   14    3 |    23   23   22   29   35   20   23   27   23   20    23
  29  |   13   17    5    9   11    4   16   20   10   30    4 |    27   30   26   35   31   26   32   37   27   37    28
  31  |   11   13    7   13   15    4   11   19   13   21    4 |    22   25   20   19   34   18   25   20   25   18    21
  32E |   17   14    8    9   15    7   14   20   13   23    5 |    48   56   47   48   47   46   54   52   54   51    48
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |   12   14    6   11   12    5   13   15   12   20      |T   27   29   24   29   30   23   29   28   25   26    25
 WRMS |   11   14    6   10   12    4   13   13   10   22      |NE  25   28   22   28   29   21   27   26   23   24    24
 MEDI |   10   14    6   10   11    4   13   14   11   17      |MD  26   28   22   27   28   20   27   26   23   23    23



Table 4: Precise Navigation Summary.

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

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

Table 4.1761   GPS week: 1761   MJD: 56571.0-56577.0

CENT| CLK EPO  |        BRUX       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 2992 |U    6     6    16 |U    7     9    25 |U ----  ----  ---- |
emr | emr 2972 |     8     7    21 |U    8     8    26 |  ----  ----  ---- |
esa | esa 2976 |     6     7    16 |U    7    10    24 |  ----  ----  ---- |
gfz | gfz 2971 |U    7     7    16 |U    7    10    25 |U ----  ----  ---- |
grg | grg 2880 |U    8    10    22 |U    8    11    33 |U ----  ----  ---- |
igr | igr 2975 |     7     7    16 |     7    10    24 |  ----  ----  ---- |
igs | igs 2976 |     7     7    16 |     7     9    24 |  ----  ----  ---- |
jpl | jpl 2972 |     8     7    20 |U    8    11    29 |U ----  ----  ---- |
mit | mit 2976 |     7     7    19 |U   16    24   105 |U ----  ----  ---- |



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 5.1761.0   GPS week: 1761   Day: 0   MJD: 56571.0

CENT| CLK EPO  |        BRUX       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3038 |     6     6    18 |     6     8    18 |  ----  ----  ---- |
emr | emr 2976 |     6     9    22 |     8     7    22 |  ----  ----  ---- |
esa | esa 2976 |     6     7    18 |     6     9    18 |  ----  ----  ---- |
gfz | gfz 2976 |     6     7    18 |     7     9    17 |  ----  ----  ---- |
grg | grg 2880 |     6    10    22 |     9    10    22 |  ----  ----  ---- |
igr | igr 2976 |     6     7    19 |     6     8    16 |  ----  ----  ---- |
igs | igs 2976 |     6     7    18 |     7     9    17 |  ----  ----  ---- |
jpl | jpl 2976 |     6     7    21 |     9     9    26 |  ----  ----  ---- |
mit | mit 2976 |     7     7    17 |     9    10    28 |  ----  ----  ---- |

Table 5.1761.1   GPS week: 1761   Day: 1   MJD: 56572.0

CENT| CLK EPO  |        BRUX       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3029 |     6     8    17 |     7     9    28 |  ----  ----  ---- |
emr | emr 2976 |     6     9    17 |     8     8    26 |  ----  ----  ---- |
esa | esa 2976 |     6     9    15 |     7     9    29 |  ----  ----  ---- |
gfz | gfz 2976 |     6     9    15 |     7     9    29 |  ----  ----  ---- |
grg | grg 2880 |     9    13    24 |     9    11    29 |  ----  ----  ---- |
igr | igr 2976 |     7     9    15 |     7     9    30 |  ----  ----  ---- |
igs | igs 2976 |     6     9    15 |     7     9    28 |  ----  ----  ---- |
jpl | jpl 2976 |     6     8    17 |     8     9    33 |  ----  ----  ---- |
mit | mit 2976 |     7    10    16 |     7     7    29 |  ----  ----  ---- |

Table 5.1761.2   GPS week: 1761   Day: 2   MJD: 56573.0

CENT| CLK EPO  |        BRUX       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 2976 |     5     6    11 |     9    11    29 |  ----  ----  ---- |
emr | emr 2974 |     7     7    15 |     8     9    29 |  ----  ----  ---- |
esa | esa 2976 |     6     7    13 |     9    11    29 |  ----  ----  ---- |
gfz | gfz 2971 |     6     7    12 |     9    12    28 |  ----  ----  ---- |
grg | grg 2880 |     6     8    18 |     9    12    34 |  ----  ----  ---- |
igr | igr 2976 |     5     6    12 |     9    10    28 |  ----  ----  ---- |
igs | igs 2976 |     6     7    12 |     8    11    28 |  ----  ----  ---- |
jpl | jpl 2974 |     7     8    14 |     9    10    32 |  ----  ----  ---- |
mit | mit 2976 |     6     7    12 |    17    32    46 |  ----  ----  ---- |

Table 5.1761.3   GPS week: 1761   Day: 3   MJD: 56574.0

CENT| CLK EPO  |        BRUX       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 2976 |     6     5    18 |     8    10    26 |  ----  ----  ---- |
emr | emr 2972 |    10     7    23 |     9     9    26 |  ----  ----  ---- |
esa | esa 2976 |     7     6    17 |     8    11    27 |  ----  ----  ---- |
gfz | gfz 2971 |     7     6    17 |     8    11    27 |  ----  ----  ---- |
grg | grg 2880 |     9    10    24 |    10    11    36 |  ----  ----  ---- |
igr | igr 2976 |     7     6    17 |     9    11    27 |  ----  ----  ---- |
igs | igs 2976 |     7     6    18 |     8    10    26 |  ----  ----  ---- |
jpl | jpl 2972 |     9    10    24 |     9    14    33 |  ----  ----  ---- |
mit | mit 2976 |     7     6    18 |    11    12    26 |  ----  ----  ---- |

Table 5.1761.4   GPS week: 1761   Day: 4   MJD: 56575.0

CENT| CLK EPO  |        BRUX       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 2976 |     6     7    18 |     7    11    28 |  ----  ----  ---- |
emr | emr 2972 |     9     6    29 |     8     9    30 |  ----  ----  ---- |
esa | esa 2976 |     7     8    20 |     6    12    25 |  ----  ----  ---- |
gfz | gfz 2971 |     8     8    22 |     6    12    26 |  ----  ----  ---- |
grg | grg 2880 |    10    13    33 |     8    15    38 |  ----  ----  ---- |
igr | igr 2976 |     7     8    23 |     6    12    25 |  ----  ----  ---- |
igs | igs 2976 |     7     8    19 |     7    12    25 |  ----  ----  ---- |
jpl | jpl 2972 |     8     8    29 |     6    13    31 |  ----  ----  ---- |
mit | mit 2976 |     8     6    24 |    53    90   568 |  ----  ----  ---- |

Table 5.1761.5   GPS week: 1761   Day: 5   MJD: 56576.0

CENT| CLK EPO  |        BRUX       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 2976 |     6     6    11 |     5    10    28 |  ----  ----  ---- |
emr | emr 2972 |     9     8    15 |     8     7    32 |  ----  ----  ---- |
esa | esa 2976 |     6     6    10 |     6     9    27 |  ----  ----  ---- |
gfz | gfz 2969 |     7     6    10 |     5     8    27 |  ----  ----  ---- |
grg | grg 2880 |     7     7    14 |     8     8    40 |  ----  ----  ---- |
igr | igr 2976 |     6     6     9 |     5     9    29 |  ----  ----  ---- |
igs | igs 2976 |     7     6    10 |     7     8    29 |  ----  ----  ---- |
jpl | jpl 2972 |     8     7    13 |     6    10    30 |  ----  ----  ---- |
mit | mit 2976 |     7     6    13 |     5    10    22 |  ----  ----  ---- |

Table 5.1761.6   GPS week: 1761   Day: 6   MJD: 56577.0

CENT| CLK EPO  |        BRUX       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 2976 |     7     4    15 |     5     8    16 |  ----  ----  ---- |
emr | emr 2968 |     9     5    24 |     7     6    18 |  ----  ----  ---- |
esa | esa 2976 |     8     5    18 |     6     9    16 |  ----  ----  ---- |
gfz | gfz 2969 |     8     5    21 |     6     8    18 |  ----  ----  ---- |
grg | grg 2880 |     9     6    19 |     7    11    28 |  ----  ----  ---- |
igr | igr 2975 |     8     5    20 |     5     9    15 |  ----  ----  ---- |
igs | igs 2976 |     8     4    19 |     6     8    17 |  ----  ----  ---- |
jpl | jpl 2968 |     9     5    24 |     8    11    22 |  ----  ----  ---- |
mit | mit 2976 |    10     9    35 |     7     9    18 |  ----  ----  ---- |


Table 6: Earth Orientation Parameters weekly summary.                          
                                                                              
        Weekly mean and standard deviation of Centre ERP, ERP rates and       
        LOD differences with respect to IGS combined values. See Table 7 for  
        the daily summaries.                                                  
                                                                              
        Xpole,Xrt: x pole and x pole rate                          
        Ypole,Yrt: y pole and y pole rate                       
        LOD      : Length Of Day                                               
                                                                              
        AC LOD BIAS    : 10-day mean LOD bias with respect to Bulletin A     
        AC LOD BIAS RMS: RMS of AC LOD BIAS                              
                                                                              
        FLAG: "u" (used), "x" (excluded), "-" (no submission)                 
              for Xpole, Ypole, Xrt, Yrt and LOD                              

Table 6.1761   GPS week: 1761   MJD: 56571.500-56577.500

                                                         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       6     140     104     -2 |      21     25
            |      17      20      63      92      1 |       1
emr   uuxxu |      28     -31     159     242      4 |      39     41
            |      20      11     104      36     13 |       4
esa   uuuuu |       5       9     -18    -129     -3 |      15     19
            |      15      11      45      21      3 |       2
gfz   uuuuu |      -1      -2      61     -74      2 |      16     19
            |      24       9      52      78      4 |       2
grg   uuuux |       6      -2     -68      21     -4 |      15     17
            |      10      11      23      75      7 |       1
igr   xxxxx |      -9       8      25      74      1 |       6     14
            |      14      12      72      30      4 |       2
irf   xxxxx |       7       5     -59     -23      0 |       6     14
            |      10      10      44      18      2 |       2
jpl   uuuuu |      28       3     -39     229      5 |      28     33
            |      22      16     104      81      6 |       2
mit   uuuuu |      -7     -10    -114     -43      5 |      23     27
            |      28      17     102      34      2 |       3
ngs   uuuuu |     -22      10      30      89     -3 |      12     19
            |      59      29      65     109      4 |       1
sio   xxxxx |      21     -56      55     -18      0 |      27     29
            |      17      61      56      45      4 |       1


Table 7.1761.0   GPS week: 1761   Day: 0   MJD: 56571.500

                                                         AC LOD  AC LOD
CENT  FLAG  |   Xpole   Ypole     Xrt     Yrt    LOD |    BIAS  BIAS RMS
            |   [uas]   [uas]   [uas/d] [uas/d]  [us]|    [us]    [us]
------------+----------------------------------------+------------------
cod   uuuuu |      -9      17     101     151     -4 |      20     26
emr   uuxxu |      13     -28     177     264     12 |      33     34
esa   uuuuu |      -8      11     -30    -147     -5 |      13     19
gfz   uuuuu |      22       0     123     -10      2 |      13     18
grg   uuuux |      13      -7     -84     102     -7 |      15     18
igr   xxxxx |       7      10     -66      40      0 |       3     14
irf   xxxxx |      -5       6      -6     -30      0 |       4     14
jpl   uuuuu |      42      25    -208     316     -1 |      28     33
mit   uuuuu |     -45     -12      12     -81      4 |      19     23
ngs   uuuuu |       2     -21      36     -65     -1 |      10     19
sio   xxxxx |      -1     -11      69      25     -6 |      27     31

Table 7.1761.1   GPS week: 1761   Day: 1   MJD: 56572.500

                                                         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 |     -18      18      84     138     -3 |      19     24
emr   uuxxu |      57     -25      57     272     10 |      34     37
esa   uuuuu |      22      -1     -66    -153     -1 |      13     19
gfz   uuuuu |     -41      -8     135    -100     -7 |      13     19
grg   uuuux |      13      -4     -78      29    -10 |      14     18
igr   xxxxx |      -2      16      15      64      6 |       3     14
irf   xxxxx |      11      -7       4      -8      0 |       4     14
jpl   uuuuu |      60      14     -99     161      8 |      26     31
mit   uuuuu |      -5     -17      40      -9      6 |      19     24
ngs   uuuuu |     -82      15       3     121      0 |      11     19
sio   xxxxx |      19     -71     116      55     -5 |      26     29

Table 7.1761.2   GPS week: 1761   Day: 2   MJD: 56573.500

                                                         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 |     -37       3     205      61     -3 |      22     26
emr   uuxxu |      21     -14     194     224     19 |      38     40
esa   uuuuu |      23      26     -21    -102     -9 |      16     20
gfz   uuuuu |       9      15      -5    -132      6 |      16     19
grg   uuuux |       8     -16     -71      60     -8 |      16     18
igr   xxxxx |       5       1     135      67      0 |       7     14
irf   xxxxx |      13      14     -70     -26     -1 |       7     14
jpl   uuuuu |      27       6      49     177      0 |      29     34
mit   uuuuu |     -26     -35    -127     -52      5 |      23     27
ngs   uuuuu |     -30     -14      15     166     -2 |      12     19
sio   xxxxx |      41     -82      19     -67     -1 |      27     31

Table 7.1761.3   GPS week: 1761   Day: 3   MJD: 56574.500

                                                         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      -5     177     -29     -4 |      22     25
emr   uuxxu |      -2     -41     126     296     11 |      41     43
esa   uuuuu |      12      -2     -55    -145      0 |      15     19
gfz   uuuuu |     -11       3      45    -199      2 |      16     20
grg   uuuux |      -6     -16     -91      62      2 |      16     17
igr   xxxxx |     -12      -5      33      57      4 |       7     14
irf   xxxxx |      -8       2    -120     -54      1 |       7     14
jpl   uuuuu |       0       2      34     371     -1 |      28     33
mit   uuuuu |     -17      -4    -215     -82      7 |      24     27
ngs   uuuuu |      54      43     162     260     -6 |      13     19
sio   xxxxx |      20     -84     -36     -48      5 |      26     28

Table 7.1761.4   GPS week: 1761   Day: 4   MJD: 56575.500

                                                         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 |     -30       8     101     130     -1 |      21     25
emr   uuxxu |      19     -35      77     204     -4 |      42     45
esa   uuuuu |     -13      -2      69    -116     -4 |      16     19
gfz   uuuuu |     -20     -13      17     -71      3 |      16     20
grg   uuuux |      17      10     -34      31     -3 |      15     17
igr   xxxxx |     -34       7     -22     130     -7 |       7     14
irf   xxxxx |       4       7     -69       4     -2 |       7     14
jpl   uuuuu |       3      -9    -110     219      6 |      27     32
mit   uuuuu |       7      -8    -159      11      0 |      24     28
ngs   uuuuu |      45      45      27     -15      1 |      13     19
sio   xxxxx |       0    -121      20     -25      1 |      26     28

Table 7.1761.5   GPS week: 1761   Day: 5   MJD: 56576.500

                                                         AC LOD  AC LOD
CENT  FLAG  |   Xpole   Ypole     Xrt     Yrt    LOD |    BIAS  BIAS RMS
            |   [uas]   [uas]   [uas/d] [uas/d]  [us]|    [us]    [us]
------------+----------------------------------------+------------------
cod   uuuuu |     -31     -31     230      28      0 |      20     24
emr   uuxxu |      41     -28     114     232     -9 |      41     44
esa   uuuuu |       3      17     -35    -106     -1 |      15     19
gfz   uuuuu |      19      -5      65      31      4 |      16     20
grg   uuuux |       6       4     -39     -10     -8 |      13     16
igr   xxxxx |     -16      31     -22      63      1 |       5     15
irf   xxxxx |      17      -8     -65     -21      3 |       6     14
jpl   uuuuu |      40       9     -22     181     16 |      26     31
mit   uuuuu |      -5     -17    -139     -47      6 |      24     27
ngs   uuuuu |     -41      23     -53      69    -10 |      13     19
sio   xxxxx |      27     -84     104     -11      2 |      25     28

Table 7.1761.6   GPS week: 1761   Day: 6   MJD: 56577.500

                                                         AC LOD  AC LOD
CENT  FLAG  |   Xpole   Ypole     Xrt     Yrt    LOD |    BIAS  BIAS RMS
            |   [uas]   [uas]   [uas/d] [uas/d]  [us]|    [us]    [us]
------------+----------------------------------------+------------------
cod   uuuuu |       4      32      79     250     -2 |      23     25
emr   uuxxu |      44     -49     368     203    -15 |      44     45
esa   uuuuu |      -5      14       9    -131     -3 |      17     19
gfz   uuuuu |      18      -4      46     -36      3 |      19     21
grg   uuuux |     -10      12     -81    -130      9 |      14     16
igr   xxxxx |     -11      -3     103      95      4 |       8     14
irf   xxxxx |      18      19     -88     -24      1 |       9     13
jpl   uuuuu |      27     -25      81     180      9 |      32     34
mit   uuuuu |      44      20    -211     -44      5 |      27     29
ngs   uuuuu |     -99     -23      20      85     -1 |      14     19
sio   xxxxx |      40      60      96     -56      5 |      29     30



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