[IGSREPORT-22228] Wk 1762 IGS Final Orbits

IGS ACC igs.acc at noaa.gov
Fri Nov 1 13:29:01 PDT 2013


Author:  AC Coordinator / NOAA NGS

sum-file Version 2.0
Final IGS Orbit Combination - Week 1762   (Oct 13, 2013 - Oct 19, 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:

igs1762[0-6].sp3  IGS GPS ephemeris files in SP3 format.
igs1762[0-6].clk  IGS GPS satellite and station clocks in clock RINEX format.
igs1762[0-6].cls  IGS GPS clock combination summary report.
igs17627.erp      Earth Rotation Parameters (ERP) and their rates as well as
                  Universal Time (UT1-UTC) and Length Of Day (LOD) associated 
                  with IGS ephemerides.
igs17627.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   | 10 BRAZ BRFT CHTI GLSV HERT HOB2 HRAO INVK MAC1 MAW1
                0  |  COD   | NNOR REYK TOW2 TWTF BRAZ HERT NNOR REYK
                0  |  ESA   | CHPI
                0  |  GFZ   | HNLC ISPA
                0  |  GRG   | HYDE IRKJ KELY HYDE IRKJ
                0  |  JPL   | 10 32 CUSV
                0  |  MIT   | 2 9 12 17 2 9 12 MDVJ TNML USNO BAKO MDVJ TNML
                1  |  COD   | DGAR FAA1 KOUC MAW1 MOBS NNOR REYK SYDN WROC XMIS
                1  |  COD   | KOUC MOBS NNOR WROC XMIS
                1  |  EMR   | MCM4 OPMT
                1  |  GFZ   | REUN
                1  |  GRG   | KELY WILL BRFT FAA1 KELY KOUC MAW1 POLV WILL
                1  |  JPL   | 24 26 32 MCM4
                1  |  MIT   | 7 23 26 28 7 14 23 26 28 CAS1 DAV1 MDVJ
                2  |  COD   | KOUC KOUC MAW1
                2  |  EMR   | 32 5 10 12 25 32 HERS
                2  |  ESA   | MBAR
                2  |  GFZ   | 32 HNLC
                2  |  GRG   | IRKJ LPGS POLV HYDE IRKJ KOUC LPGS NTUS PDEL
                2  |  JPL   | 5 12 25 32
                2  |  MIT   | 1 2 3 6 9 19 21 22 23 27 2 21 PDEL ALIC BAKO BRMU
                2  |  MIT   | CRO1 HOB2 IRKT KOUR MAW1 MONP NNOR OPMT PDEL PRDS
                2  |  MIT   | TIDB
                3  |  COD   | 10 32 KOUC MOBS NNOR REYK WROC XMIS KOUC MOBS NNOR
                3  |  COD   | REYK WROC XMIS
                3  |  EMR   | OPMT
                3  |  ESA   | 32 MATE NTUS MATE NTUS
                3  |  GFZ   | IRKT MATE IRKT MATE
                3  |  GRG   | 25 CRO1 IRKJ IRKT KELY KOUC ZAMB IRKJ KELY
                3  |  JPL   | 10 32
                3  |  MIT   | 4 19 22 25 2 4 18 19 22 25 IRKJ IRKJ USNO
                4  |  COD   | 32 32 ALIC BAKO CAS1 CONZ HOB2 HRAO HYDE INVK KOUC
                4  |  COD   | MAC1 MDVJ NNOR REUN SSIA TIDB WAB2 WILL XMIS INVK
                4  |  COD   | KOUC XMIS
                4  |  ESA   | 32 32
                4  |  GFZ   | ALIC KOUC ALIC
                4  |  GRG   | IRKJ IRKJ KOUC NRMD POL2 POLV
                4  |  JPL   | 10 32 KOUC MCM4
                4  |  MIT   | 4 12 TWTF TWTF
                5  |  COD   | 32 32 ABPO ALIC CAS1 DARW DGAR HERT HOLB JOZ2 KARR
                5  |  COD   | KOUC MAC1 MIZU MOBS NICO NNOR NRIL REYK SHAO TSKB
                5  |  COD   | USN3 WAB2 WROC WSRT HERT JOZ2 KOUC MOBS REYK WROC
                5  |  EMR   | USNO HERS MATE TSKB USNO
                5  |  ESA   | 32 32
                5  |  GRG   | IRKJ MATE NOVM IRKJ MATE NOVM NTUS PENC
                5  |  JPL   | 10 32
                5  |  MIT   | 20 NTUS
                6  |  COD   | 32 32 CHTI HOB2 KOUC MAG0 BRAZ KOUC REYK
                6  |  EMR   | 12 HERS
                6  |  ESA   | 32 32
                6  |  GFZ   | SYOG WILL SYOG
                6  |  GRG   | BRAZ HYDE IRKJ KELY ABMF ALBH ALGO ALIC ARTU AUCK
                6  |  GRG   | BAKE BARH BJFS BOGT BOR1 BRAZ BREW BRFT BRMU BRUX
                6  |  GRG   | CAS1 CHTI CHUM CHUR COCO CONZ CRO1 DAEJ DARW DAV1
                6  |  GRG   | DRAO DUBO DUM1 FAIR GLPS GLSV GODE GOLD GOPE GRAZ
                6  |  GRG   | GUAT GUUG HARB HERT HLFX HNPT HOB2 HOFN HOLB HRAO
                6  |  GRG   | HYDE IISC INVK IRKJ IRKT ISPA JOZ2 JPLM KARR KELY
                6  |  GRG   | KERG KIRU KOKB KOUC KOUR LAMA LPGS MAC1 MAL2 MAR6
                6  |  GRG   | MAS1 MATE MAW1 MBAR MCIL MCM4 MDO1 MDVJ MKEA MOBS
                6  |  GRG   | MONP NANO NICO NKLG NNOR NOVM NRC1 NRIL NRMD NTUS
                6  |  GRG   | NYA1 NYAL OHI2 ONSA PDEL PERT PIMO POL2 POLV QAQ1
                6  |  GRG   | RABT REUN REYK SCH2 SCOR SFER SHAO SPT0 SSIA STJO
                6  |  GRG   | SUTH SUWN SYOG THTI THU3 TIDB TIXI TLSE TNML TOW2
                6  |  GRG   | TRO1 TWTF URUM USN3 VILL WHIT WILL WROC WSRT WTZR
                6  |  GRG   | XMIS YEBE YELL ZAMB ZECK ZIMM
                6  |  JPL   | 12 KOUC
                6  |  MIT   | 2 4 9 10 22 26 2 4 9 10 18 22 26 HYDE POLV HYDE MDVJ
                6  |  MIT   | WILL

    
 5. New clock offsets and drifts were estimated for centres showing reference
    clock resets. Note that only the largest clock offset and drift are output
    to the summary file. However, the clock combination and the listed RMS
    include all the clock segments. In summary, the following clock
    shifts/resets were noticed and accounted for:
    
               Day | Centre |  Time  |  Jump
               ----+--------+--------+-------------
                0  |  GRG   | ~02:53 | ~ -0.16 ns
                0  |  MIT   | ~00:00 | ~ 0.07 ns
                2  |  MIT   | ~23:55 | ~ 0.10 ns
                3  |  GRG   | ~07:17 | ~ -0.15 ns
                4  |  GRG   | ~19:08 | ~ 0.15 ns
                4  |  MIT   | ~10:45 | ~ 0.12 ns
                5  |  GRG   | ~13:58 | ~ 0.16 ns
                5  |  MIT   | ~02:10 | ~ 0.02 ns
                6  |  GRG   | ~10:55 | ~ -0.51 ns

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

 7. The following orbit solutions were excluded from the combination because they
    were biasing the weighted average (generally indicated by long arc RMS). They
    were still used for statistics computation.
    
               Day | Centre | PRN list
               ----+--------+---------------
                3  |  EMR   |  25
                3  |  GRG   |  25
                3  |  JPL   |  25
                3  |  MIT   |  25

 8. Velocity changes were estimated to alleviate the effects of modeling problems,
    experienced by all centres,in the Long Arc (LA) process.
    
             Velocity changes per day and affected satellites:
    
               Day |  0 |  1 |  2 |  3 |  4 |  5 |  6 |
           --------+----+----+----+----+----+----+----+
           PRN G25 |  4 |  4 |  4 |  4 |  4 |  4 |  4 |

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

10. Small rotations were applied to all the AC orbit and ERP values in order to
    align them to the current IGS reference frame. These RX, RY and RZ rotations
    were estimated in the IGS SINEX combination process, performed by the IGS
    Reference Frame Coordinator at the Institut Geographique National (IGN).
    Starting on 19-Aug-2012 (GPS Week 1702; MJD=56158), ACs began contributing
    products based on 1d SINEX integrations. As a result, the SINEX combinations
    are now done daily instead of weekly, and the associated daily rotations are
    applied here to the orbits and ERPs. The estimated 7 transformations, from
    which only the 3 rotations are applied to the orbit and ERP values, are:
    
            |     |    DX     DY     DZ      RX     RY     RZ     SCL
     Centre | Day |   [mm]   [mm]   [mm]   [uas]  [uas]  [uas]   [ppb]
     -------+-----+---------------------------------------------------
       COD  |   0 |    -.3     .1   -1.0     -63     27     18     .09
       EMR  |   0 |    3.2    9.9    8.1     -19      5    -22     .09
       ESA  |   0 |    5.6    5.9   -7.5     -13    -16     32     .02
       GFZ  |   0 |     .0     .5    -.7     -22     -1     12    -.14
       GRG  |   0 |    6.4    1.8   -3.9      -8     -3      9     .41
       JPL  |   0 |    7.0    7.7   19.6     -56      3      1     .19
       MIT  |   0 |    4.3    3.3    4.7     -21      8    -29     .10
       NGS  |   0 |    4.2     .6    3.4     -10     -1     31     .41
       SIO  |   0 |    3.2    1.9    1.4      -6    -37    -83    -.05

       COD  |   1 |    -.7    -.3    -.4     -57     32    -10    -.07
       EMR  |   1 |    1.5   11.7    6.4     -14     10    -21    -.05
       ESA  |   1 |    -.3    8.8   -8.5      -2     -1     61    -.24
       GFZ  |   1 |     .1     .4    -.6     -23     -6      5    -.24
       GRG  |   1 |    -.3   -1.3   -6.5     -14     29      8     .23
       JPL  |   1 |    6.4    9.6   12.8     -71     12     -9     .20
       MIT  |   1 |   -3.1    3.9     .7     -30     29     -6    -.02
       NGS  |   1 |   -1.0   -8.6    8.6     -78     12     -9     .41
       SIO  |   1 |    4.7    2.0   -5.8     -19    -93   -126    -.16

       COD  |   2 |    -.5    -.4   -1.1     -41     34    -27     .06
       EMR  |   2 |    1.1   11.1    1.7     -24      8    -29    -.25
       ESA  |   2 |    1.5    5.6  -12.2      -9     -2     46    -.26
       GFZ  |   2 |     .1     .5   -1.3     -19    -12      9    -.07
       GRG  |   2 |    6.0   -2.6   -5.7     -13     18    -28     .36
       JPL  |   2 |    5.3    7.2   14.0     -80    -19     22     .21
       MIT  |   2 |    1.5    4.0    1.3     -25     25      9     .06
       NGS  |   2 |   -2.5   -3.7    7.3     -47     18    -11     .24
       SIO  |   2 |     .6    -.1  -15.1     -72    -88   -236    -.30

       COD  |   3 |    -.4     .1    -.8     -43     31     14    -.04
       EMR  |   3 |    1.3    8.2    7.9     -18      3    -23    -.15
       ESA  |   3 |    -.6    4.1  -16.0     -19      5     25    -.12
       GFZ  |   3 |     .3     .9   -1.7     -14    -12     33     .20
       GRG  |   3 |    1.1    3.3  -11.0      -6     18    -22     .24
       JPL  |   3 |    -.1    3.6    9.6     -72     84    -36     .05
       MIT  |   3 |    5.4    1.4   -1.1     -10     24    -29     .13
       NGS  |   3 |    3.1   -4.8   12.7     -83      0     18     .56
       SIO  |   3 |   -1.9    5.3  -19.9      -9    -73   -153    -.19

       COD  |   4 |    -.2     .3   -1.0     -38     47      0    -.03
       EMR  |   4 |   -3.5    9.6    4.3     -20     16    -24    -.06
       ESA  |   4 |   -1.4    -.1  -13.1      -1      5     18    -.02
       GFZ  |   4 |     .2    1.1   -1.2     -20    -17     26     .22
       GRG  |   4 |    1.2    2.8  -12.3     -19     27      4     .16
       JPL  |   4 |    1.7    5.6   11.6     -79    -14     -2     .35
       MIT  |   4 |   -2.4    5.2   -2.5     -28      9     -4     .16
       NGS  |   4 |   -6.3   -6.9    8.5     -72     31    -45     .50
       SIO  |   4 |   -3.4    4.9  -15.7     -63    -50   -392     .01

       COD  |   5 |     .1    -.7    -.1     -53     11     25     .08
       EMR  |   5 |   -2.1   10.6    4.6     -18      9    -21     .03
       ESA  |   5 |    3.9    6.3   -9.4     -12      2     34    -.08
       GFZ  |   5 |     .0    1.1   -1.4      -9    -23     15     .24
       GRG  |   5 |    1.8    1.3   -6.4     -15     19      0     .49
       JPL  |   5 |     .7    4.2   18.4     -84     37     -4     .47
       MIT  |   5 |   -2.0    6.2   -1.8     -15      1     -3     .27
       NGS  |   5 |     .3   -4.0    8.9     -48      5     -2     .35
       SIO  |   5 |    -.9    4.0  -10.0     -42    -60   -293     .20

       COD  |   6 |     .4    -.2     .5     -50     16     25     .12
       EMR  |   6 |    7.2    8.1    -.4     -17     15    -31    -.15
       ESA  |   6 |    5.2    6.4  -10.5      11      1     56    -.02
       GFZ  |   6 |     .0     .6   -1.0     -22    -11      9     .17
       GRG  |   6 |    5.1    5.5   -9.5     -23     27    -14     .41
       JPL  |   6 |   11.6    7.5    8.2    -107     32     23     .58
       MIT  |   6 |    2.0    5.9   -3.1     -36      3    -16     .20
       NGS  |   6 |    -.8   -6.4    9.7     -78      8    -21     .60
       SIO  |   6 |    -.2    3.5  -17.9     -69    -77   -401     .04


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

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


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

Most combination statistics are with respect to the combined orbits and
consist of seven parts. The first, Table 1, summarizes all statistics for
the week. It contains means and standard deviations over the week of
satellite ephemeris and clock correction transformation parameters for
each centre (Table 1.1762.a). It also displays the computed satellite
position sigmas for the combined orbits (Table 1.1762.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 2.1762.[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 3.1762.[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 5.1762.0-6). 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 1762 summary.                       (Oct 13, 2013 - Oct 19, 2013)

Table 1.1762.a   GPS week: 1762   MJD: 56578.000-56584.000

         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  259|    1     0     1   -13    26     8   .10   11   11 |    -741    -149     20    126
        |    0     0     1    14    17    17   .02           |     134     323
emr   79|    0     4     6    -6   -11     1   .03   16   15 |    1960    -335     22    147
        |    0     1     0    13     8    14   .03           |    1098     727
esa  150|    1     0     0    11     5     0  -.21    6    5 |   -1272    1274     10    121
        |    0     0     0    10    15    17   .02           |     649    1152
gfz  196|   -1     0    -3     1   -16    19   .08   10    9 |     -31     -94     13    102
        |    0     0     1    19     9    22   .03           |     400     762
grg  191|    1     0    -2    18     0   -13   .32   13   13 |    -238     365     16    192
        |    0     1     2    19    21    13   .05           |     613    1185
igr  n/a|    0     0     0   -11    29   -12  -.37    5    4 |   -5924    -252     16     92
        |    0     0     0    16    14     5   .05           |     945     701
jpl   80|   -2     0     1   -10    16     0   .15   15   14 |    1318    -309     19    134
        |    0     1     1    15    26    11   .03           |    1212     661
mit  298|    0    -3    -4   -14   -10    -7  -.15   14   11 |    -173      68     29    300
        |    0     0     1    20    15    30   .03           |     218     322
ngs  241|    0     0     5   -18    -9   -21   .06   12   10 | -233908  726556   1661   3242
        |    1     0     1    53    42    15   .06           |  398233 1241142
sio  456|   -1    -1     4   -66   -63  -261  -.49   19   19 |     ---     ---    ---    ---
        |    2     2     0    27    25   122   .06           |     ---     ---


Table 1.1762.b   GPS week : 1762   MJD: 56578.000-56584.000   

         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    5    4    5    4    4 |
   3  |    4    4    4    4    4    3    3 |
   4  |    3    3    4    4    3    3    3 |
   5  |    5    5    4    4    4    4    4 |
   6  |    3    3    4    3    3    4    4 |
   7  |    4    4    4    4    4    4    4 |
   8  |    4    4    4    3    4    3    3 |
   9  |    3    4    3    3    3    3    3 |
  10  |    6    6    6    6    6    6    5 |
  11  |    4    4    4    4    4    5    5 |
  12  |    5    5    5    5    5    5    6 |
  13  |    4    4    4    4    4    4    4 |
  14  |    5    4    4    6    5    5    5 |
  15  |    4    4    4    4    4    4    5 |
  16  |    5    5    5    5    5    5    5 |
  17  |    5    5    4    4    5    4    4 |
  18  |    4    4    4    4    4    4    4 |
  19  |    4    4    4    4    4    5    4 |
  20  |    4    4    4    4    4    4    5 |
  21  |    4    4    4    4    4    4    5 |
  22  |    4    4    4    4    4    5    5 |
  23  |    5    5    4    5    5    5    5 |
  24  |    4    4    3    4    4    4    4 |
  25  |    5    5    5   10    5    6    4 |
  26  |    3    3    4    3    4    4    4 |
  27  |    4    4    4    4    4    4    4 |
  28  |    4    4    4    4    4    4    4 |
  29  |    5    5    5    5    5    4    4 |
  31  |    5    5    5    5    5    5    5 |
  32  |    6    5    6    6    5    5    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 2.1762.0   GPS week: 1762   Day: 0   MJD: 56578.000                            

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    -1    -1   -12    49    40   .11   13   13 |    -682    -434     19    129
emr   80|   -2     6     7    16   -27    16   .04   16   16 |    2862    -553     13    127
esa  150|    1     0     0    12   -19   -15  -.22    6    6 |    -423    -720     10    140
gfz  195|   -1     0    -5    13   -12    21   .02   10   10 |     308   -1621     14    105
grg  191|    1     0     1    36    16    -6   .35   11   11 |      19    -238     13    118
igr  n/a|    0     0     0   -16    11    -8  -.34    4    4 |   -5035    -589     15     89
jpl   80|   -1     0    -1    12     0     0   .16   14   14 |    2598    -613     15    145
mit  300|    0    -4    -2    -3    -6   -18  -.18   13   11 |       9    -338     26    324
ngs  239|    0     0     3   -85    29    -8  -.02   11    9 |    -705    -438   1699   3201
sio  454|    0    -4     5   -26    -8  -111  -.59   18   19 |     ---     ---    ---    ---

Table 2.1762.1   GPS week: 1762   Day: 1   MJD: 56579.000                            

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  260|    1     0     0   -21    15    -7   .11   11   10 |    -687    -199     20    136
emr   80|    0     5     5    -8   -14    -7   .02   16   16 |    3347    -698     13    164
esa  150|    1     0     0    22     7    11  -.20    5    5 |   -1977    2384      8    153
gfz  197|   -2     1    -2   -20   -30    57   .09   10    9 |    -609     314     12    103
grg  192|    2     2    -3    15    31   -10   .39   12   12 |     105    -206     16    365
igr  n/a|    0     0     0    -4    10   -16  -.35    4    4 |   -4691    -816     16    105
jpl   80|   -2     0     2    -2   -26    -4   .12   14   13 |    2841    -893     16    154
mit  300|    0    -3    -4   -32   -12   -50  -.18   13   12 |      83    -193     25    334
ngs  243|   -1    -1     5     4    14   -34   .04   12   10 |    -694    -166   1713   3081
sio  461|    1    -4     4   -49   -79  -149  -.54   18   18 |     ---     ---    ---    ---

Table 2.1762.2   GPS week: 1762   Day: 2   MJD: 56580.000                            

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  262|    2     0     2    12    25    -1   .13   10   10 |    -726    -387     22    143
emr   80|    0     4     4    -7    -5     8   .08   15   15 |    2677     475     41    154
esa  150|    1     0     0    -5    16     7  -.23    5    5 |   -1765    2530     14    114
gfz  196|   -2     2    -3   -14    -4     3   .08   10    9 |    -411     692     16    119
grg  192|    2     1    -2    48    -3   -18   .38   11   11 |    -144     511     25    362
igr  n/a|   -1     0    -1   -40    27   -18  -.45    5    4 |   -5498     490     17    130
jpl   80|   -2    -2     0   -34    17   -15   .17   15   14 |    1992      69     28    147
mit  300|    0    -3    -5     8   -31   -14  -.16   13   12 |    -487     650     41    372
ngs  242|   -2     0     4   -16   -28    -8   .02   12    9 | -826400 2572733   1991   3362
sio  464|    0    -3     4   -71   -89  -256  -.53   18   19 |     ---     ---    ---    ---

Table 2.1762.3   GPS week: 1762   Day: 3   MJD: 56581.000                            

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  262|    0     0     0   -35    22    10   .11   12   12 |   -1025     242     19    117
emr   80|    0     4     7    -9     0    20   .01   21   16 |    2278   -1376     15    142
esa  150|    0     0     0     3    15    -2  -.21    6    6 |   -1165    1323     10    123
gfz  199|   -1     0    -5   -20   -26    43   .09   11    9 |      28     281     12    103
grg  191|    1     1    -6    22   -19   -19   .31   19   19 |     100    -220     15    124
igr  n/a|    0     0     0    -3    35   -15  -.41    5    4 |   -5781   -1126     17     81
jpl   80|   -3     1     2    -8    58    19   .12   21   18 |    1183   -1099     16    117
mit  300|    0    -3    -4   -40     5   -34  -.18   22   10 |     -11     -39     23    238
ngs  245|    0     0     6    59   -41   -31   .05   11    8 |   -1080     518   1732   3389
sio  462|   -1    -2     5   -50   -65  -177  -.48   18   19 |     ---     ---    ---    ---

Table 2.1762.4   GPS week: 1762   Day: 4   MJD: 56582.000                            

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  263|    1     0     3   -13    22    24   .08   11   11 |    -699     145     18    117
emr   77|    0     4     6   -27   -13     1   .04   16   16 |    1019    -853     13    147
esa  150|    0     0     0     7    -8   -28  -.22    5    5 |    -902     386      8    105
gfz  197|   -2     0    -2    15    -9     9   .08    9    8 |     486    -432     11     94
grg  192|    0     0    -5     7   -31    11   .31   13   13 |      71    -274     13    126
igr  n/a|    0     0    -1    12    51   -13  -.35    5    4 |   -6846    -651     16     76
jpl   80|   -1     0     3   -27    29    -3   .19   14   13 |     100    -556     14    123
mit  299|    0    -3    -5     8   -13    27  -.12   12   10 |    -417      24     32    287
ngs  241|    0     0     3    -7    40    -2   .04   12   10 | -807214 2513731   1816   3295
sio  457|    0     0     4   -77   -64  -400  -.43   19   19 |     ---     ---    ---    ---

Table 2.1762.5   GPS week: 1762   Day: 5   MJD: 56583.000                            

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  260|    1     0     2    -8    48    -5   .09   10    9 |    -766     142     19    123
emr   80|   -1     3     6     4    -7   -15   .04   15   15 |     477     561     14    141
esa  150|    1     0     0    21    23     6  -.19    5    5 |   -2014    1886      8    105
gfz  197|   -1     0    -5    28   -11     1   .06   10   10 |    -232     241     12     95
grg  191|    0     0    -1     7    -5   -25   .27   13   13 |    -220       1     13    115
igr  n/a|    0     0     0    -9    36    -2  -.37    4    4 |   -7275     570     15     73
jpl   80|    0     1     0    -7    10    -8   .15   14   13 |    -314     759     14    120
mit  295|   -1    -3    -5   -12   -24    29  -.13   12    9 |    -230     125     24    289
ngs  242|   -1     1     5   -91   -80   -23   .12   13   10 |    -737     141   1297   2975
sio  457|   -3     0     3   -77   -68  -311  -.43   19   20 |     ---     ---    ---    ---

Table 2.1762.6   GPS week: 1762   Day: 6   MJD: 56584.000                            

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  263|    2     0     0   -13     0     0   .09   10   11 |    -603    -552     25    118
emr   80|    0     1     6   -13   -12   -11  -.00   15   15 |    1062      94     48    154
esa  150|    1     0     0    17     4    21  -.20    5    5 |    -660    1134     13    110
gfz  196|   -2     1    -2     9   -17     1   .12   11   10 |     211    -135     20     95
grg  188|    0    -1    -2    -9    10   -24   .26   14   14 |   -1600    2981     19    136
igr  n/a|    0     0     0   -16    37   -11  -.32    5    5 |   -6343     355     17     93
jpl   80|   -2     0     1    -2    28     9   .16   14   14 |     829     165     31    132
mit  294|   -1    -2    -5   -30    10    10  -.11   13   10 |    -161     252     34    259
ngs  239|    0     0     6     8    -2   -42   .16   12   10 |    -531    -625   1382   3395
sio  442|   -4     1     3  -113   -67  -421  -.42   20   21 |     ---     ---    ---    ---

       
       
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 3.1762.0   GPS week: 1762   Day: 0   MJD: 56578.000                            

        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  |   14   11    6    7   10    5    9   12   11   15    3 |    24   25   18   18   26   14   26   21   20   16    19
   2  |   14   23    8   13   10    4   15   13   14   27    5 |    30   32   33   41   37   31   30   35   28   32    31
   3  |   13   10    5   12    9    4    9    9    9   15    3 |    21   23   23   32   29   22   25   27   24   19    24
   4  |    9   10    5    6    8    3    7    9   12   20    3 |    33   28   28   31   30   28   26   32   24   29    28
   5E |   12   19    7   12   13    4   23   10   11   10    5 |    30   28   25   34   27   22   27   29   31   19    26
   6  |   11    9    4   12    9    3    8    9    8   13    3 |    26   25   27   34   32   26   27   32   29   21    28
   7  |    9   14    4   14    9    6   16    9   11   17    4 |    27   26   23   31   30   18   23   22   24   17    23
   8  |   11    9    5    8    8    4    8   16    8   23    3 |    19   24   17   19   21   15   22   24   21   23    18
   9  |    9   10    4    9    7    3    8   16    7   18    3 |    20   25   17   20   21   16   23   22   21   21    18
  10E |   15   24   11   12   11    8   14   14   20   15    5 |    36   46   33   34   37   32   40   34   37   33    33
  11  |   15   15    5    8   12    4   10   13   12   18    4 |    54   63   63   65   69   60   63   70   59   59    62
  12  |   14   23    7    8   13    3   22   18    9   16    5 |    28   25   16   22   28   16   22   24   27   15    20
  13  |    9   16    6   10   11    4   14   11   13   18    4 |    30   37   26   33   38   24   34   25   27   24    28
  14  |   21   14    8    6   11    6   14   10   11   18    4 |    34   33   29   29   33   24   32   30   29   24    28
  15  |    9   15    6    8    9    5   17   15    9   17    4 |    29   29   25   26   30   22   31   24   29   20    25
  16  |   19   15    6   14   17    3   14   15    8   13    5 |    26   22   16   23   25   14   18   19   21   16    18
  17  |   15   17    8   10    7    5   19   12   10   24    4 |    31   35   35   39   37   32   35   42   33   32    34
  18E |    9    9    6   11   12    3   17   15    9   12    4 |    29   24   23   29   30   21   28   25   27   20    24
  19  |   13   14    6   10    7    4   12   10   10   24    3 |    24   29   30   35   31   28   30   34   27   25    29
  20E |   12   12    5   10   12    4   12    8   10   15    3 |    40   45   37   42   42   37   41   39   42   34    39
  21  |    8   17    5   10   15    3   13   11    7   22    4 |    37   32   37   45   44   35   34   37   32   37    36
  22E |   10   16    7    8   10    3   13   13    9   18    4 |    32   33   28   32   36   27   35   30   31   25    30
  23  |   12   16    8   10   11    4   15   14   12   22    4 |    25   30   21   27   28   19   29   22   23   20    22
  24  |   12   12    4    9    8    5   12   12    9   17    3 |    22   21   16   17   24   14   26   16   22   16    18
  25  |   13   23    6   13   12    5   17   21   11   12    5 |   387  382  383  385  380  387  381  382  389  325   384
  26  |    9   12    5   10    8    3    9   10   11   18    3 |    22   23   20   27   26   19   22   23   19   24    21
 X27  |   11    7    5   13  ---    4   13   10    9   22    4 |    39   45   44   52  ---   45   53   49   46   38    46
  28  |    8   16    4   11   14    4   10   13   11   13    4 |    20   23   19   22   32   15   20   25   22   17    20
  29  |   11   16    7   10    9    3   19   22   10   27    4 |    37   34   35   41   35   34   38   37   30   28    34
  31  |   15   15    6   12   14    4   17   11   13   21    4 |    23   23   20   25   34   18   25   22   30   26    22
  32E |   20   15    8   11   16    6   12   20   18   15    5 |    61   70   61   64   66   60   66   71   67   66    63
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |   13   16    6   10   11    4   14   13   11   18      |T   41   43   39   44   45   37   42   42   41   36    40
 WRMS |   13   16    6   10   11    4   14   11    9   19      |NE  28   29   26   31   32   24   29   29   27   24    27
 MEDI |   12   15    6   10   10    4   13   12   10   18      |MD  29   29   26   32   31   24   29   29   28   24    28

Table 3.1762.1   GPS week: 1762   Day: 1   MJD: 56579.000                            

        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   11    4    7   11    3   11   13   15   15    3 |    23   23   17   17   25   15   26   20   19   17    17
   2  |    6   15    4   11   10    4   14   12   14   28    4 |    30   24   24   30   30   23   27   29   23   29    25
   3  |    9   12    5    9   15    3    9   11   10   15    3 |    21   21   18   25   25   17   21   24   22   17    20
   4  |    9    9    3    8   11    4    7   10   11   20    3 |    29   22   23   26   24   23   24   28   25   27    24
   5E |   11   19    6   13   16    5   19   12   10   11    4 |    31   29   23   30   25   22   27   27   31   19    25
   6  |    9   10    5   10   12    2    7    9    8   11    3 |    23   22   22   23   26   21   24   26   20   20    21
   7  |   10   16    4   10   10    5   16    9    9   15    3 |    28   23   20   27   30   17   24   21   22   16    21
   8  |   10   11    6   10    9    3   10   18   10   23    4 |    24   24   21   23   24   18   25   27   22   28    20
   9  |    8    9    5    9    8    3   10   14   12   17    3 |    23   23   19   23   23   17   24   24   21   24    19
  10E |   18   21   10   11   11    5   16   14   18   14    5 |    32   41   30   33   34   30   34   33   38   32    31
  11  |    9   17    5    8   13    3   13   10   12   20    4 |    42   45   43   44   51   42   45   48   40   40    43
  12  |   11   23    6   10   14    4   24   15    8   14    5 |    28   27   17   23   29   16   26   27   27   17    21
  13  |    9   16    6    7   14    3   14   11   11   16    4 |    26   33   22   27   35   19   29   23   22   21    24
  14  |   10   17    7   10   11    6   14   11   12   18    4 |    23   30   25   26   30   22   29   25   27   21    24
  15  |   13   17    4   10   13    4   17   12   12   16    4 |    25   29   21   27   34   21   30   26   25   17    24
  16  |   15   21    6   14   18    3   17   16   12   13    5 |    27   29   19   24   25   17   25   23   26   20    21
  17  |   15   18    4    9    8    5   17   16   16   24    4 |    25   29   24   31   29   23   30   31   25   23    25
  18E |   10   10    6   11   12    3   13   13    9   12    3 |    29   25   23   28   28   22   27   24   26   22    23
  19  |   11   14    5    9    9    3   12   12    8   22    3 |    22   21   20   23   25   18   23   24   18   19    19
  20E |    9   14    5   11   17    3   15   10    9   13    4 |    35   35   34   40   36   33   34   35   32   33    34
  21  |    9   15    5   12   15    4   15    8    9   20    4 |    29   28   24   31   33   23   28   24   25   26    25
  22E |   10   12    6    7   11    4   11   12    8   19    3 |    27   27   23   27   30   23   28   27   30   22    25
  23  |    9   18    7    8   12    5   17   14   13   21    4 |    25   29   21   26   28   18   28   23   20   20    22
  24  |    9   14    5    7    8    4   13   11   12   17    3 |    22   23   20   20   27   15   28   20   25   20    20
  25  |    9   23    6   10   13    4   15   18   13   11    4 |   393  390  391  395  389  392  391  386  393  205   392
  26  |    9   10    4   10    8    3    9    9   12   18    3 |    19   18   17   24   20   16   19   21   17   21    17
 X27  |    8   11    5   10  ---    4   14   11    7   20    3 |    31   31   33   32  ---   29   40   33   30   28    32
  28  |   10   16    4   11   12    4   13   11   13   11    4 |    25   23   19   26   31   17   23   26   21   19    21
  29  |   11   19    5   12   13    6   21   15    7   24    4 |    30   26   25   31   30   25   29   28   27   23    26
  31  |   13   18    5   14   15    5   15   11   11   22    4 |    27   25   22   22   35   18   27   24   28   26    23
  32E |   16   14    7    6   16    6   15   16   20   15    5 |    65   64   56   59   63   57   63   63   65   59    60
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |   11   16    5   10   12    4   14   13   12   18      |T   39   39   36   40   42   34   40   39   38   30    36
 WRMS |   10   16    5    9   12    4   13   12   10   18      |NE  26   26   22   26   29   20   27   26   24   22    23
 MEDI |   10   15    5   10   12    4   14   12   11   17      |MD  27   27   22   27   29   21   27   26   25   22    24

Table 3.1762.2   GPS week: 1762   Day: 2   MJD: 56580.000                            

        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    8    4    5   11    6   12   12   11   12    3 |    23   25   19   21   29   17   28   21   22   19    21
   2  |    7   17    6   17   11    7   16   12   13   29    4 |    29   30   28   42   34   29   30   35   25   30    29
   3  |   10   11    4   10   11    3   10   14    7   15    3 |    21   22   20   23   24   18   22   22   23   17    20
   4  |    7    8    4   11   11    4    8   13   13   15    3 |    28   24   25   32   25   24   24   27   23   23    25
   5E |    9   18    5    9   12    3   18   10   13    9    4 |    31   29   23   28   29   22   27   28   35   22    27
   6  |    9   11    4   11   10    4    9   12   10   12    3 |    22   22   23   24   27   23   22   24   28   19    23
   7  |   11   16    4   12    9    5   16    9    8   17    3 |    30   23   21   29   31   18   23   19   21   17    23
   8  |    8   10    5    8    9    5   10   17    6   23    3 |    22   21   17   21   20   15   21   19   17   26    17
   9  |    6   11    4    8    8    5    9   14    5   18    3 |    23   23   18   23   20   18   21   17   21   21    19
  10E |   16   25   12   13   10    6   14   13   28   17    6 |    21   37   22   24   26   21   29   25   37   22    23
  11  |   12   15    4    7   12    4   13   12    9   18    3 |    45   52   48   51   57   49   52   53   47   50    49
  12  |    8   23    7    8   12    4   21   15    7   15    4 |    24   22   15   20   28   14   21   22   22   16    18
  13  |   10   15    5   10   11    4   16   10    7   17    3 |    32   32   27   34   38   24   31   22   28   22    29
  14  |   12   15    5   10   12    5   16   11    8   15    4 |    27   26   24   27   30   22   28   26   27   20    25
  15  |    9   16    5   10    8    5   17   11   13   15    4 |    26   30   24   28   33   24   31   25   31   21    26
  16  |   12   19    5   11   18    4   18   16   14   16    5 |    26   27   21   22   27   19   22   20   29   20    21
  17  |   11   17    5   10    8    4   17   13   11   23    4 |    30   30   26   35   30   27   30   33   25   25    27
  18E |    8   12    6   10   12    4   12   11   10   13    3 |    29   26   26   31   30   26   28   26   31   24    27
  19  |   12   14    5   10    8    4   13   17   10   23    4 |    21   24   23   24   24   22   24   26   19   21    21
  20E |    8   13    6    8    9    2   17   10   12   10    3 |    37   38   36   40   38   33   37   35   37   34    36
  21  |    6   16    5   11   17    4   15   13   12   23    4 |    35   32   31   39   37   31   32   33   34   30    32
  22E |   10   12    5    9   14    5   11   12    9   20    3 |    33   32   30   32   32   29   31   31   33   23    30
  23  |   11   16    7    9   11    3   19   14    8   22    4 |    27   27   21   26   29   18   27   20   23   20    22
  24  |    7   11    4    9    8    4   12    9   13   17    3 |    18   21   16   20   27   13   26   18   19   17    18
  25  |   12   24    5   12   11    6   21   17   11   12    5 |   355  353  350  351  352  351  358  344  351  338   352
  26  |    8   11    4   11    7    4    9   11   14   16    3 |    22   22   18   25   20   19   19   20   17   22    19
 X27  |    9   10    4   13  ---    5   14   14    8   21    4 |    36   37   37   40  ---   37   43   38   39   33    37
  28  |    9   14    4   12   15    4   13   10    8    9    3 |    21   18   17   25   30   14   19   20   22   14    19
  29  |   11   17    5   10   10    6   19   16   11   22    4 |    45   40   38   47   41   38   39   41   40   34    40
  31  |   10   15    5   16   14    3   17   11   12   22    4 |    30   27   24   26   37   22   27   25   29   25    26
  32E |   16   15    8    9   15    8   15   18   26   19    5 |    63   59   54   57   61   49   61   59   57   55    57
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |   10   15    5   10   11    5   15   13   12   18      |T   39   39   36   40   42   35   39   37   39   34    37
 WRMS |   10   15    5    9   11    4   14   12    9   19      |NE  27   27   24   29   30   23   27   26   26   23    25
 MEDI |   10   15    5   10   11    4   15   12   11   17      |MD  28   27   24   28   30   22   28   25   28   22    25

Table 3.1762.3   GPS week: 1762   Day: 3   MJD: 56581.000                            

        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   11    7   12   11    4   10   13    9   12    3 |    23   25   20   25   30   18   28   23   26   17    22
   2  |   14   17    7   12   13    5   14    9    9   30    4 |    31   31   35   45   39   34   36   38   30   34    34
   3  |    8   13    6   10    9    4    9   12    9   15    3 |    21   22   23   31   28   21   26   27   25   22    24
   4  |    8   11    5    6   11    4    8   13   10   15    3 |    33   28   31   35   32   29   30   35   28   28    30
   5E |   11   16    5   10    9    4   16   11   11    9    4 |    30   27   25   30   32   22   29   33   35   25    27
   6  |   10   12    5    9    7    4    8   12    7   12    3 |    24   23   26   30   31   25   28   32   25   25    26
   7  |    8   13    6    8   10    4   14    7    8   17    3 |    28   26   25   28   31   22   24   23   27   20    24
   8  |   10    9    5    8    7    5   10   15    4   21    3 |    24   26   22   21   23   20   30   25   25   27    22
   9  |    8   10    5    7    5    4    8    9    4   16    2 |    23   26   20   21   23   20   27   23   25   23    21
  10E |   15   21   10    8   11    6   14   12   25   15    5 |    33   44   31   36   36   30   39   34   42   32    33
  11  |   11   18    5    8   11    4   12   12   10   17    4 |    57   57   59   64   68   58   60   64   57   57    59
  12  |   12   24    7   12   14    5   24    9   11   16    5 |    27   26   19   25   30   16   29   26   24   18    21
  13  |   12   14    6    7   12    4   13   10    9   15    3 |    28   35   26   28   37   25   33   25   26   21    27
  14  |   25   18    7   14   12    7   17   15    9   15    5 |    36   29   30   32   30   24   30   35   33   26    29
  15  |    8   16    5    8    9    3   15   10    8   17    3 |    28   30   26   30   33   24   32   29   30   23    27
  16  |   13   24    6   13   16    3   17   14   12   17    5 |    25   27   19   25   28   17   24   24   26   25    21
  17  |   10   17    5    8   11    5   16   13   10   28    4 |    34   35   33   40   40   31   36   41   39   31    35
  18E |    9   14    8   10   11    4   11   14   10   14    4 |    35   29   28   34   32   28   30   30   31   29    29
  19  |   11   16    7   10    7    5   11   18    8   21    4 |    25   25   26   35   30   27   28   34   28   25    27
  20E |   12   12    6   11   12    3   12    9    9   11    3 |    44   42   40   43   43   38   39   41   45   39    41
  21  |    9   16    5   10   12    3   13    8   12   23    4 |    40   35   37   45   45   36   39   38   36   37    38
  22E |   10   15    6    9   14    4   12   13   10   19    4 |    34   31   31   35   34   29   36   33   33   28    31
  23  |   15   19    7    7   11    3   16   15    9   20    4 |    26   30   23   27   30   21   29   26   24   20    24
  24  |   10   12    6    8    9    5   16    8   13   15    3 |    23   24   23   24   27   18   31   22   23   22    22
  25  |   16   78   12   17   82   15   86  104   22   26    9 |   978  974  970  971  942  977  978  984  978  507   973
  26  |   10   10    5    7    9    3   11   10    7   17    3 |    20   20   18   23   21   17   23   22   21   24    19
 X27  |    9   11    5    9  ---    7   13   14    8   17    4 |    35   37   39   45  ---   40   46   45   39   38    40
  28  |   11   13    5   10   14    5   12    9    9    9    3 |    22   21   18   23   31   15   22   21   24   15    19
  29  |   14   16    5   11   10    5   16   17   12   20    4 |    40   35   36   41   38   35   37   44   35   32    36
  31  |   13   16    5   15   15    5   15   11    8   21    4 |    27   30   25   29   38   23   29   29   29   29    27
  32E |   20   16    8   22   15    6   16   15   22   15    6 |    60   61   57   57   59   53   63   60   64   56    57
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |   12   21    6   11   19    5   21   22   11   18      |T   61   61   59   63   64   57   63   63   62   43    60
 WRMS |   12   16    6    9   19    4   18   10    8   19      |NE  29   29   27   32   33   25   31   31   29   26    28
 MEDI |   11   16    6   10   11    4   13   12    9   17      |MD  28   29   26   31   32   25   30   32   29   26    27

Table 3.1762.4   GPS week: 1762   Day: 4   MJD: 56582.000                            

        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   11    5    7   11    6    8   15   12   13    3 |    16   22   14   17   25   12   25   21   19   15    17
   2  |   14   16    7   11   15    5   14    9   12   31    4 |    32   31   29   39   37   31   32   35   34   30    31
   3  |    9   13    4    9   10    6    7    9   13   14    3 |    21   24   23   27   26   21   26   25   26   21    23
   4  |    6   10    4    5   13    4    7   11    9   11    3 |    25   22   23   28   27   24   22   29   27   22    24
   5E |    8   15    6   13   13    4   17    8   11    8    4 |    30   27   23   29   28   21   28   27   28   23    26
   6  |   10   13    4   11   11    5    8    9    8   13    3 |    21   24   23   27   26   22   26   28   27   21    24
   7  |    8   17    5    8   13    4   14    7   10   16    3 |    26   22   20   25   28   16   23   18   22   15    21
   8  |   10    9    5    7    9    4   12   14    9   23    3 |    19   20   15   18   16   14   22   20   18   26    16
   9  |    8    9    5    7    9    4   10    8    9   16    3 |    18   21   17   18   18   16   22   18   20   22    17
  10E |   11   21    9   10   10    8   15   14   26   14    5 |    25   35   21   23   26   21   31   31   33   24    23
  11  |   10   19    4    7   13    5   12   17   11   18    4 |    45   50   50   52   58   49   50   57   50   50    50
  12  |   14   23    5    8   13    5   22   10   11   19    5 |    31   27   20   23   31   19   24   24   29   19    23
  13  |    9   15    6    6   15    3   16    9    8   16    3 |    25   31   23   28   36   23   33   23   27   18    25
  14  |   22   18    6    8   12    7   17   16    9   22    5 |    35   28   27   31   30   24   31   35   29   29    28
  15  |    9   15    4    8   14    3   14   11   11   20    4 |    25   28   24   24   30   21   29   22   28   18    24
  16  |   12   21    4   12   14    3   14   14    5   15    4 |    25   27   19   24   23   17   24   23   21   23    20
  17  |   15   16    5   12   11    5   16   12   12   26    4 |    22   29   26   35   32   26   28   33   27   26    27
  18E |   10   14    6   11   14    4   14   11   11   14    4 |    31   24   25   32   29   25   29   28   30   24    26
  19  |   11   17    4    8   10    5   13   21    9   24    4 |    22   26   25   29   24   24   27   34   28   25    25
  20E |   10   11    6    8    9    3   15    9   12   11    3 |    38   37   33   37   38   31   36   35   36   32    34
  21  |    7   15    4   14   14    3   17    8    8   26    4 |    33   32   34   42   44   33   34   34   29   34    34
  22E |   11   13    6    8   13    3   12   13   12   23    4 |    33   31   29   34   32   29   33   32   33   22    30
  23  |   12   18    7    8   12    4   15   14   11   20    4 |    23   27   19   25   27   19   28   25   22   17    21
  24  |   14   12    5    9   11    5   15    7   10   15    3 |    22   21   16   18   24   15   25   15   22   15    18
  25  |   11   20    6   10   13    3   17   12   16  ---    4 |   556  552  555  555  554  557  553  562  562  ---   556
  26  |   11   11    5    9   13    4   11   12   10   16    3 |    20   20   18   21   22   15   20   22   21   22    18
 X27  |    9   13    7   10  ---    4   14   12    9   17    4 |    36   40   37   40  ---   36   46   42   41   34    39
  28  |   10   17    4   10   14    3   12    9   10    8    3 |    20   23   17   23   30   15   19   19   19   14    18
  29  |    9   18    5   12   18    6   19   18   13   26    5 |    64   63   64   70   66   63   66   70   65   64    65
  31  |   13   16    6   12   19    7   16    9   13   21    4 |    23   26   21   25   36   19   27   24   31   23    23
  32E |   12   13    5    7   13    4   14   15   23   16    4 |    47   49   44   49   47   42   50   53   53   49    47
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |   11   16    5    9   13    5   14   12   12   19      |T   45   46   43   47   49   41   47   47   47   25    44
 WRMS |   11   16    5    8   13    4   13   10   10   19      |NE  27   28   25   29   31   23   29   29   28   25    26
 MEDI |   10   15    5    9   13    4   14   11   11   16      |MD  25   27   23   28   29   22   28   28   28   23    24

Table 3.1762.5   GPS week: 1762   Day: 5   MJD: 56583.000                            

        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    9    5    7   10    3   10   14   11   12    3 |    22   23   20   25   29   18   29   22   26   21    21
   2  |    9   16    6   10   14    4   14    8   13   30    4 |    32   28   27   34   34   26   31   32   25   24    28
   3  |    8   12    4    9    9    4    8    8   11   15    3 |    21   22   23   26   24   18   25   22   24   19    22
   4  |    7    7    4    9   13    3    7   12   12   11    3 |    22   24   22   27   26   20   24   26   19   18    22
   5E |    9   16    6   11    9    4   14    9   17    9    4 |    31   27   24   30   31   22   29   28   35   22    27
   6  |    8   11    4   11   10    4    8    9   13   16    3 |    26   24   26   27   27   21   26   25   26   22    24
   7  |    8   17    6    9   13    4   13    7   11   17    3 |    25   21   20   23   29   15   22   17   23   16    20
   8  |    8    8    4    8    9    4   11   11    7   24    3 |    22   19   14   16   18   12   23   15   20   26    15
   9  |    7   10    4    8   10    3   10    6    9   17    3 |    21   19   16   17   21   14   22   17   20   22    17
  10E |   15   20    8   10   12    6   14   13   27   19    5 |    33   40   28   30   31   26   38   33   38   28    29
  11  |   12   18    6    8   11    6   12   19   12   20    4 |    43   48   47   49   50   45   47   51   45   47    46
  12  |   10   24    5   10   15    3   24   11   11   20    5 |    28   27   15   22   30   15   25   20   24   15    19
  13  |   10   16    5    9   17    3   14    8    7   15    4 |    25   30   21   25   36   19   29   20   25   16    23
  14  |   10   17    6   10   12    5   16   17    8   23    4 |    25   27   25   27   30   21   26   34   24   27    25
  15  |    8   13    5   10   14    4   17    9   12   20    4 |    27   27   23   27   32   20   30   23   26   19    24
  16  |    8   20    5   12   19    4   14   14   13   16    4 |    22   21   16   22   25   14   19   22   23   17    17
  17  |    7   16    6   10   11    4   15   12   15   29    4 |    27   27   26   32   29   21   30   28   25   20    25
  18E |    7   12    6   10   11    3   12   13   12   14    3 |    31   26   24   32   32   23   28   28   28   22    26
  19  |   12   17    6   10    8    4   13   22   10   24    4 |    23   24   25   29   23   21   27   29   21   20    23
  20E |   10   13    4    9   10    4   14    9   15   12    3 |    49   44   44   47   48   43   43   46   52   45    45
  21  |    6   14    5   12   14    4   17    8   12   26    4 |    34   36   34   40   41   30   35   33   31   31    34
  22E |    9   16    5   11   13    4   12   22    8   23    4 |    33   30   26   30   33   24   31   37   30   24    28
  23  |   13   17    5   11   14    3   18   16    8   18    4 |    26   26   19   23   28   16   26   21   24   15    20
  24  |    9   14    5    9   10    3   12    7   16   12    3 |    18   20   15   18   24   11   25   16   20   11    16
  25E |   15   19    8   17   20    7   17   11   14  ---    5 |   569  562  563  565  560  564  563  564  559  ---   563
  26  |    6   10    3    8   14    3   10    6   17   17    3 |    20   18   17   22   25   16   19   20   22   22    18
 X27  |   11   11    6   13  ---    4   13   11   12   19    4 |    35   35   35   41  ---   34   42   35   34   30    35
  28  |    7   15    4   10   13    4   12    7    8    8    3 |    20   18   16   23   29   13   22   16   21   13    18
  29  |   13   17    5   12   11    5   17    9    9   30    4 |    45   41   44   48   44   42   43   43   41   34    43
  31  |    9   15    4   17   19    6   17   13    7   21    4 |    24   26   20   24   35   16   27   29   27   18    22
  32E |   11   14    6    8   23    5   14   16   16   17    4 |    65   65   58   63   59   57   66   65   65   61    61
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |   10   15    5   10   13    4   14   12   13   19      |T   46   45   43   47   49   40   47   45   45   24    43
 WRMS |    9   15    5   10   13    4   13    9   10   20      |NE  26   26   23   27   29   20   28   25   25   21    24
 MEDI |    9   15    5   10   12    4   14   11   12   17      |MD  26   27   24   27   30   21   28   28   25   22    24

Table 3.1762.6   GPS week: 1762   Day: 6   MJD: 56584.000                            

        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    5    8   12    6    9   13   12   11    3 |    26   23   21   25   31   19   30   23   23   20    22
   2  |   13   14    5   13   12    5   14    9    9   33    4 |    36   33   34   46   41   35   37   41   35   37    36
   3  |    9   12    4   12   11    4    9    8    9   17    3 |    25   24   27   34   31   24   29   27   28   22    27
   4  |    5    7    4   10   13    3    6    9   12   10    3 |    32   27   29   37   37   29   30   34   28   25    30
   5E |    8   14    6   13   11    5   12   16   11    8    4 |    36   33   30   35   38   29   33   40   36   32    33
   6  |    7   12    6   12   13    3   10   10    9   19    3 |    28   26   32   33   35   28   31   34   33   25    31
   7  |   10   17    5   12   15    3   16    7   12   23    4 |    33   25   24   32   33   22   25   24   31   28    25
   8  |   10   10    5    9   10    5    9    9    8   23    3 |    22   22   18   19   22   15   26   21   23   30    19
   9  |    8    9    4    9   11    4    9   10    9   17    3 |    20   23   17   17   23   16   24   21   26   24    19
  10E |   10   19    6   11   13    5   16   13   24   18    5 |    34   41   33   39   38   32   39   37   46   40    36
  11  |    9   18    5    8   13    5   13   21   15   22    4 |    65   64   69   71   77   68   69   76   70   67    69
  12  |   11   27    6   10   14    5   26   11   12   18    5 |    25   29   18   24   30   16   29   22   24   16    20
  13  |   10   15    5    8   18    4   14    9   10   15    4 |    29   34   26   31   42   26   34   25   29   22    28
  14  |   19   19    7    9   16    5   19   16   11   24    5 |    32   26   28   31   31   24   27   36   34   30    27
  15  |   10   15    4   11   14    4   17   12   15   20    4 |    35   36   28   32   37   29   35   33   35   28    31
  16  |   12   21    6   14   18    4   13   10   12   14    4 |    26   26   19   25   24   16   18   20   26   19    20
  17  |   11   16    5    9    9    5   16   12   13   29    4 |    31   33   34   41   37   33   37   43   32   33    34
  18E |   10   13    5    9   10    4   13   13   11   15    3 |    34   28   26   32   31   25   29   32   35   23    29
  19  |   11   14    5   12    8    4   12   19   12   26    4 |    29   30   32   37   32   31   33   37   35   27    31
  20E |    9   12    6    9   23    4   16   14   11   11    4 |    58   53   51   55   63   49   51   50   55   48    53
  21  |    9   16    5   12   13    4   16   11   15   33    4 |    45   39   43   52   50   41   41   45   43   43    43
  22E |    9   16    6   10   16    5   16   19    9   20    4 |    34   30   28   34   39   26   32   37   35   22    30
  23  |   12   16    6   10   15    4   15   15   11   18    4 |    27   27   21   25   31   19   28   23   24   19    22
  24  |   13   12    5    6   12    4   12   10   10   15    3 |    17   24   16   20   28   14   29   20   23   14    19
  25E |    9   16    7   11   16    7   14   11   12   13    4 |   412  411  413  413  409  413  410  414  414  520   412
  26  |   10   10    5   11   15    3   10    6   12   16    3 |    26   27   24   28   31   23   27   27   27   28    25
 X27  |    6   10    4   16  ---    3   12   11   13   25    4 |    46   46   50   50  ---   47   54   51   51   41    49
  28  |    9   14    4   10   14    4   12    8   10   10    3 |    24   23   21   24   29   17   24   22   23   20    21
  29  |   11   18    6   13   10    4   17   11    8   36    4 |    52   50   51   55   52   49   46   55   47   55    50
  31  |   10   16    6   19   22    7   18   11    8   24    5 |    28   30   24   30   39   20   28   29   33   23    26
  32E |   12   12    5    9   23    6   14   17   18   17    5 |    65   62   58   61   60   56   65   64   63   61    60
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |   10   15    5   11   14    5   14   13   12   20      |T   46   45   43   48   50   41   46   47   47   46    44
 WRMS |   11   15    5   10   14    5   14   10   10   21      |NE  31   31   29   34   35   27   32   32   32   29    30
 MEDI |   10   14    5   10   13    4   14   11   11   18      |MD  32   30   28   33   35   26   31   34   33   28    30



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 4.1762   GPS week: 1762   MJD: 56578.0-56584.0

CENT| CLK EPO  |        BRUX       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 2975 |U    6     6    16 |U    8    10    28 |U    7     8    19 |
emr | emr 2967 |     9     8    22 |U    8     9    27 |     8     8    18 |
esa | esa 2976 |     6     7    18 |U    8    11    28 |     7     7    17 |
gfz | gfz 2967 |U    7     7    18 |U    8    10    27 |U    7     7    17 |
igr | igr 2975 |     7     6    18 |     8    10    28 |     7     7    17 |
igs | igs 2974 |     7     7    20 |     8     9    27 |     7     8    19 |
jpl | jpl 2967 |     9     7    21 |U    8    10    29 |U    8     8    18 |
mit | mit 2976 |     8     7    20 |U   11    13    31 |U   14    14    28 |



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 5.1762.0   GPS week: 1762   Day: 0   MJD: 56578.0

CENT| CLK EPO  |        BRUX       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 2976 |     4     4    14 |     8    11    24 |     6     7    18 |
emr | emr 2968 |     8     5    18 |     9     9    24 |     7     6    19 |
esa | esa 2976 |     6     5    15 |     7    10    24 |     6     6    17 |
gfz | gfz 2968 |     7     5    15 |     8    10    22 |     6     6    17 |
igr | igr 2976 |     6     5    16 |     7    10    23 |     6     6    17 |
igs | igs 2976 |     6     4    14 |     7    10    23 |     6     6    18 |
jpl | jpl 2968 |     8     5    17 |     8    11    27 |     7     6    19 |
mit | mit 2976 |     6     4    14 |     8    13    24 |     6     7    16 |

Table 5.1762.1   GPS week: 1762   Day: 1   MJD: 56579.0

CENT| CLK EPO  |        BRUX       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 2976 |     5     5    17 |     7    11    27 |     8     9    25 |
emr | emr 2968 |     7     4    23 |     7     9    32 |     8     9    23 |
esa | esa 2976 |     5     5    19 |     7    11    30 |     8     6    22 |
gfz | gfz 2969 |     6     6    19 |     7    10    28 |     7     7    23 |
igr | igr 2976 |     5     5    20 |     7    10    29 |     8     7    23 |
igs | igs 2976 |     5     5    20 |     7    10    30 |     7     6    23 |
jpl | jpl 2966 |     7     4    24 |     7    10    29 |     8     8    23 |
mit | mit 2976 |     6     4    20 |    12    11    37 |    10     7    26 |

Table 5.1762.2   GPS week: 1762   Day: 2   MJD: 56580.0

CENT| CLK EPO  |        BRUX       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 2976 |     4     4    11 |     8    12    28 |     6     7    20 |
emr | emr 2968 |     8     7    19 |     8     9    27 |     7     9    19 |
esa | esa 2976 |     5     5    13 |     8    12    26 |     7     8    16 |
gfz | gfz 2968 |     6     5    13 |     8    11    25 |     7     8    17 |
igr | igr 2976 |     5     4    14 |     8    11    25 |     7     8    16 |
igs | igs 2975 |     6     6    19 |     9     9    25 |     7     9    19 |
jpl | jpl 2968 |     8     6    20 |     7    11    27 |     7     8    17 |
mit | mit 2976 |    14    11    30 |    20    22    32 |    37    43    67 |

Table 5.1762.3   GPS week: 1762   Day: 3   MJD: 56581.0

CENT| CLK EPO  |        BRUX       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 2975 |     6    10    20 |     9     9    27 |     8    12    19 |
emr | emr 2967 |     8    12    26 |     9     9    26 |     8     8    17 |
esa | esa 2976 |     7    11    23 |     9    10    27 |     8    10    18 |
gfz | gfz 2967 |     8    11    23 |    10    10    24 |     8    10    18 |
igr | igr 2975 |     7    11    23 |    10     9    28 |     7    11    18 |
igs | igs 2974 |     7    11    23 |    10     9    25 |     7    11    19 |
jpl | jpl 2967 |     8     9    25 |    10    11    27 |     9    10    18 |
mit | mit 2976 |     8     8    23 |    10     9    33 |    10    13    24 |

Table 5.1762.4   GPS week: 1762   Day: 4   MJD: 56582.0

CENT| CLK EPO  |        BRUX       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 2976 |    10     5    16 |     8    11    34 |     6     6    19 |
emr | emr 2968 |    12     8    22 |     8    11    33 |     8     6    15 |
esa | esa 2976 |    10     7    18 |     8    12    34 |     8     5    17 |
gfz | gfz 2968 |    11     8    17 |     8    11    34 |     6     6    17 |
igr | igr 2975 |    10     7    18 |     8    11    34 |     6     5    18 |
igs | igs 2974 |    10     7    18 |     8    11    33 |     6     5    17 |
jpl | jpl 2968 |    12     8    23 |     9    11    37 |     7     6    17 |
mit | mit 2976 |     9     8    19 |     9    14    32 |    14     9    24 |

Table 5.1762.5   GPS week: 1762   Day: 5   MJD: 56583.0

CENT| CLK EPO  |        BRUX       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 2976 |     5     5    12 |     6     8    28 |     7     9    19 |
emr | emr 2968 |     9     8    17 |     8     9    23 |     8    10    16 |
esa | esa 2976 |     6     6    14 |     8    10    25 |     8     8    16 |
gfz | gfz 2968 |     8     8    13 |     7     9    27 |     8     8    15 |
igr | igr 2976 |     6     5    13 |     7     9    28 |     7     8    15 |
igs | igs 2973 |     6     7    12 |     7     8    26 |     8     9    15 |
jpl | jpl 2968 |     9     8    14 |     7     9    27 |     9    10    16 |
mit | mit 2976 |     6     8    11 |     6     8    28 |    10    10    15 |

Table 5.1762.6   GPS week: 1762   Day: 6   MJD: 56584.0

CENT| CLK EPO  |        BRUX       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 2975 |     6     9    21 |     8    10    30 |     7     8    16 |
emr | emr 2967 |     9     8    26 |     9    10    25 |     8     9    18 |
esa | esa 2976 |     7     9    25 |     7    10    27 |     6     8    15 |
gfz | gfz 2967 |     7     9    23 |     8     9    29 |     6     7    14 |
igr | igr 2972 |     7     8    24 |     7    10    26 |     6     7    14 |
igs | igs 2971 |     9    12    33 |     8     8    30 |     7     8    20 |
jpl | jpl 2968 |     8    10    25 |     8    11    29 |     8    10    19 |
mit | mit 2976 |     7    10    22 |    11    10    33 |     8    10    22 |


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 6.1762   GPS week: 1762   MJD: 56578.500-56584.500

                                                         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 |     -23      18      73     211     -2 |      19     21
            |      16      20      68      68      6 |       3
emr   uuxxu |      30     -40     200     268     -7 |      37     40
            |      12      27     122      52      6 |       4
esa   uuuuu |      -4       5     -33     -99      0 |      12     16
            |      17       7      32      48      4 |       2
gfz   uuuuu |       1     -22      88     -46      0 |      17     19
            |      14      25      50     159      3 |       1
grg   uuuux |       1      -9     -53     -54     -2 |      11     14
            |      15      12      47      53      3 |       3
igr   xxxxx |     -24      14       2      24     -6 |       3     13
            |      11       6      49      48      3 |       4
irf   xxxxx |       9       1     -26       4     -6 |       3     12
            |      10      12      47      27      4 |       4
jpl   uuuuu |      24       0      23     199      8 |      34     37
            |      48      18     121      55     10 |       1
mit   uuuuu |      -9      10     -59      23     -8 |      23     26
            |      27      27     100      69      4 |       4
ngs   uuuuu |       0      22      -3     -71      2 |       8     12
            |      59      62     124      85      4 |       2
sio   xxxxx |      46      51    -159     -39      6 |      29     30
            |      27      37      57      83      3 |       1


Table 7.1762.0   GPS week: 1762   Day: 0   MJD: 56578.500

                                                         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 |     -50      14     121     132      1 |      23     25
emr   uuxxu |      46     -86     280     177     -5 |      42     44
esa   uuuuu |      11      12     -66    -105      2 |      16     19
gfz   uuuuu |       7     -15      25     -79      0 |      19     21
grg   uuuux |      -2     -26     -58     -81      0 |      15     16
igr   xxxxx |     -12      18      47     -17     -5 |       9     14
irf   xxxxx |      18     -13     -24      34     -7 |       9     13
jpl   uuuuu |      65     -14      29     190     15 |      34     35
mit   uuuuu |      11     -34     -31     142     -7 |      28     30
ngs   uuuuu |     -80     100      72      15     -2 |      11     14
sio   xxxxx |      49      -8     -96      -7     13 |      29     30

Table 7.1762.1   GPS week: 1762   Day: 1   MJD: 56579.500

                                                         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 |     -29      31      74     202      5 |      21     22
emr   uuxxu |      40     -35     296     247    -16 |      41     44
esa   uuuuu |       1      -3      -1     -62     -5 |      14     16
gfz   uuuuu |      11       0      42     -18      3 |      18     19
grg   uuuux |     -27     -16     -85     -92     -2 |      14     15
igr   xxxxx |     -17       3      44      -7     -8 |       7     11
irf   xxxxx |       1      -4     -37      -3    -11 |       7     10
jpl   uuuuu |      97      15     135     214    -10 |      34     36
mit   uuuuu |     -28      11     -82      16    -14 |      27     28
ngs   uuuuu |     -42     -12     -81    -142      6 |      10     13
sio   xxxxx |      45      26    -103    -178      2 |      29     30

Table 7.1762.2   GPS week: 1762   Day: 2   MJD: 56580.500

                                                         AC LOD  AC LOD
CENT  FLAG  |   Xpole   Ypole     Xrt     Yrt    LOD |    BIAS  BIAS RMS
            |   [uas]   [uas]   [uas/d] [uas/d]  [us]|    [us]    [us]
------------+----------------------------------------+------------------
cod   uuuuu |     -13       4     -62     262      3 |      21     22
emr   uuxxu |      26     -69     369     327     -4 |      39     43
esa   uuuuu |      -1       9     -13    -122      1 |      12     14
gfz   uuuuu |      12       7      63     164      2 |      18     19
grg   uuuux |      -5     -19    -119    -138     -4 |      12     14
igr   xxxxx |     -31      23      19      17    -10 |       5     12
irf   xxxxx |       3      -9     -76     -34     -8 |       5     11
jpl   uuuuu |      21      24     178     114      9 |      33     35
mit   uuuuu |     -33      20    -160     -47    -11 |      25     27
ngs   uuuuu |       9      -5     166     -59     -1 |      10     13
sio   xxxxx |      30      82    -187    -101      5 |      29     30

Table 7.1762.3   GPS week: 1762   Day: 3   MJD: 56581.500

                                                         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 |     -21      57     124     313     -5 |      18     20
emr   uuxxu |      14     -21     149     319     -8 |      37     41
esa   uuuuu |     -18       1      -8    -194      6 |      10     14
gfz   uuuuu |      14      -2      82     101      4 |      16     18
grg   uuuux |      16      -3     -64      -4     -8 |       9     13
igr   xxxxx |     -26      14     -46     -13     -3 |       2     14
irf   xxxxx |       6       6     -78      26     -6 |       1     13
jpl   uuuuu |     -51       6      54     246      8 |      32     35
mit   uuuuu |      -2      11    -198      48    -11 |      22     26
ngs   uuuuu |      57     -43      32    -199     -3 |       8     13
sio   xxxxx |      56      35    -211      13      5 |      27     28

Table 7.1762.4   GPS week: 1762   Day: 4   MJD: 56582.500

                                                         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       9      32     176     -3 |      17     20
emr   uuxxu |      22     -18     185     291     -1 |      35     39
esa   uuuuu |      21       6     -35     -57      2 |      10     15
gfz   uuuuu |      -7     -44     103       8     -1 |      16     19
grg   uuuux |      15       2     -55      -1      1 |       8     12
igr   xxxxx |     -34      10     -84     114     -6 |       2     14
irf   xxxxx |       0      12     -39      -8     -1 |       0     13
jpl   uuuuu |       3       8      31     155     21 |      34     36
mit   uuuuu |     -44      19     -62     -52     -4 |      21     25
ngs   uuuuu |     -18      17      18    -121     -1 |       7     12
sio   xxxxx |      -2      83    -244     -26      5 |      28     30

Table 7.1762.5   GPS week: 1762   Day: 5   MJD: 56583.500

                                                         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 |     -35      17     116     254     -4 |      18     20
emr   uuxxu |      26     -41      23     242     -3 |      35     38
esa   uuuuu |     -26      -4     -87     -68      1 |      11     16
gfz   uuuuu |     -24     -51     153    -264     -5 |      17     21
grg   uuuux |       7      -8     -22     -56     -1 |       9     14
igr   xxxxx |      -8      12      10      11     -4 |       1     13
irf   xxxxx |      11      -5      28     -19     -5 |       0     13
jpl   uuuuu |      31     -20    -162     198      7 |      36     40
mit   uuuuu |       3     -12      58     -12     -9 |      20     24
ngs   uuuuu |      94     116       0      18      5 |       7     12
sio   xxxxx |      59      47    -118     -50      4 |      30     32

Table 7.1762.6   GPS week: 1762   Day: 6   MJD: 56584.500

                                                         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      -3     106     139    -13 |      15     18
emr   uuxxu |      40     -13      98     272    -13 |      30     33
esa   uuuuu |     -13      14     -21     -86     -4 |       9     15
gfz   uuuuu |      -8     -47     148    -230     -3 |      15     18
grg   uuuux |       3       7      30      -7     -1 |       7     12
igr   xxxxx |     -37      18      26      61     -3 |      -2     12
irf   xxxxx |      25      21      42      35     -1 |      -3     12
jpl   uuuuu |       1     -19    -102     278      7 |      36     39
mit   uuuuu |      32      53      66      64     -2 |      16     21
ngs   uuuuu |     -20     -19    -229     -10      8 |       6     10
sio   xxxxx |      84      94    -154      79      7 |      28     31



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