[IGSREPORT-22019] Wk 1749 IGS Final Orbits

IGS ACC igs.acc at noaa.gov
Fri Aug 2 10:46:16 PDT 2013


Author:  AC Coordinator / NOAA NGS

sum-file Version 2.0
Final IGS Orbit Combination - Week 1749   (Jul 14, 2013 - Jul 20, 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:

igs1749[0-6].sp3  IGS GPS ephemeris files in SP3 format.
igs1749[0-6].clk  IGS GPS satellite and station clocks in clock RINEX format.
igs1749[0-6].cls  IGS GPS clock combination summary report.
igs17497.erp      Earth Rotation Parameters (ERP) and their rates as well as
                  Universal Time (UT1-UTC) and Length Of Day (LOD) associated 
                  with IGS ephemerides.
igs17497.sum      Complete report.

    
REMARKS concerning the IGS Orbit Combination:                                  
---------------------------------------------

 1. The centres used in the clock combination are COD, EMR, ESA, GFZ, GRG, MIT, and
    JPL. The other centres are excluded because of poorer consistency, they provide
    broadcast clocks, or clock corrections are not provided (SIO). The clock
    information not used is still compared to the combination for completeness. The
    value of 999999.999999 microseconds, according to the SP3 format convention,
    signifies that no clock solution is available and therefore must not be used.
    
    In general, if an AC does not contribute to the terrestrial reference frame
    (i.e. the SINEX combination), then any corresponding orbits & clocks
    contributed from that AC should not be included with weight in this
    combination. This is done to ensure a high level of consistency between the TRF
    and the orbital frame. However, there is an exception for the clocks if the AC
    is the reference center. In that case, only the clocks from that AC are
    included with weight.
    
    Starting week 1707:
      cod = cof${wwww}[0-6].[clk,snx,sp3] & cod = cof${wwww}7.[erp,sum]

 2. Rapid (IGR) orbits/clocks are included in the combination for statistics only.
    Starting week 1582, a new orbit solution from CNES/GRGS (GRG) is included with
    weight. GRG clocks are included with weight starting 12-Aug-2012 (GPS Week
    1701, day 0, MJD 56151), after a procedural change to generate estimates in
    the center-of-figure frame instead of the center-of-mass frame. GRG LOD
    estimates are included for comparison only.

 3. The following centre clock solutions, which provide broadcast clock
    corrections, were excluded from the combination but kept in the combination
    statistics:
             -> Centre: NGS 

 4. The following clock solutions were excluded from the combination because they
    were biasing the combined clock solutions (clock shifts/outliers) but were
    kept for the RMS computation. Duplicate entries can arise due to separate
    combination runs for the 30-s clocks ACs (listed first) and the 5-min clock
    ACs (listed second).
    
               Day | Centre | PRN/STA list
               ----+--------+---------------
                0  |  ALL   | 27
                0  |  COD   | 6 3 6 ADIS KOUC MAC1 MOBS XMIS ADIS KOUC MOBS WROC
                0  |  COD   | XMIS
                0  |  EMR   | KIRU THTI CHUR HERS KIRU THTI TLSE WES2
                0  |  ESA   | 6 3 6 KOUC TRO1 WES2 KOUC TRO1
                0  |  GFZ   | 3 6 3 6 IRKJ TLSE WES2 IRKJ TLSE
                0  |  GRG   | DUBO IRKT MAC1 NKLG THTI ARTU DUBO IRKT MAC1 NKLG
                0  |  GRG   | THTI TLSE WES2
                0  |  MIT   | 7 19 21 7 19 21 IRKJ GLSV IRKJ REYK
                1  |  COD   | 3 CHUR CONZ CHUR CONZ HERT JOZ2 MAC1 REUN USNO
                1  |  EMR   | 6 6 FAIR SCH2 FAIR HERS SCH2
                1  |  ESA   | 3 CAGZ IRKJ WES2 CAGZ IRKJ WES2
                1  |  GFZ   | 3 6 3 6 ZECK ZECK
                1  |  GRG   | GUAT IRKJ GUAT IRKJ NKLG PENC
                1  |  JPL   | 6 SCH2
                1  |  MIT   | 6 7 9 19 21 6 7 8 9 19 21 22 MAC1 MAC1 MDVJ
                2  |  COD   | 17 17
                2  |  EMR   | 6 3 6 HERS KERG WES2 HARB HERS KERG USNO WES2
                2  |  ESA   | CAGZ IRKJ TLSE WES2 CAGZ IRKJ TLSE WES2
                2  |  GFZ   | 3 3 BARH BARH
                2  |  GRG   | 3 6 IRKJ IRKJ
                2  |  JPL   | 6 CHUM
                2  |  MIT   | 3 5 6 8 19 21 26 3 5 6 8 19 21 22 26 SYDN SYDN
                3  |  COD   | 3 6 CONZ XMIS
                3  |  EMR   | 6 6 HARB KERG THTI HARB HERS KERG THTI
                3  |  ESA   | 3 6 IRKJ NRMD IRKJ NRMD UNSA
                3  |  GFZ   | 3 3 CHTI NYAL
                3  |  GRG   | HARB IRKJ THTI ADIS HARB IRKJ THTI
                3  |  JPL   | 3 CHUM
                3  |  MIT   | 9 9 MDVJ NICO SCH2
                4  |  COD   | CHUR KOUC TRO1 CHUR KOUC NRC1 TRO1
                4  |  EMR   | 3 6 7 29 HERS HERS YAKT
                4  |  ESA   | IRKJ KOUC MCIL IRKJ KOUC
                4  |  GFZ   | 6 6 GRAS NRC1 GRAS NRC1
                4  |  GRG   | HOB2 IRKJ NKLG TLSE WES2 ABMF ADIS ALIC ALRT AMC2
                4  |  GRG   | ANKR AREQ ARTU ASPA AUCK BARH BJFS BOGT BRAZ BRFT
                4  |  GRG   | BRMU BRUX CAGZ CAS1 CHTI CHUR COCO CONZ CRO1 DARW
                4  |  GRG   | DAV1 DRAO DUBO FAIR GLPS GLSV GOLD GOPE GUAT GUUG
                4  |  GRG   | HARB HERT HNPT HOB2 HOFN HOLM IISC IRKJ KOKB KOUC
                4  |  GRG   | KOUR LAMA LPGS MAC1 MAR6 MAS1 MATE MAW1 MCM4 MDO1
                4  |  GRG   | MDVJ MKEA NANO NICO NOVM NRC1 NRIL NTUS NYAL OHI2
                4  |  GRG   | ONSA PDEL PENC PIMO POLV QAQ1 RESO REUN REYK SCH2
                4  |  GRG   | SCOR SFER SPT0 STJO STR1 SYOG THU3 TIDB TLSE TOW2
                4  |  GRG   | TRO1 USN3 USNO WES2 WHIT WSRT WTZR XMIS YARR YELL
                4  |  GRG   | ZAMB ZECK
                4  |  JPL   | 3 6
                4  |  MIT   | 6 8 9 18 19 26 3 6 8 9 18 19 26 HOFN NICO NRC1 TRO1
                4  |  MIT   | BOR1 NICO TRO1
                5  |  COD   | KOUC MOBS XMIS KOUC
                5  |  EMR   | 3 MCM4 YELL HERS MCM4 YELL
                5  |  ESA   | 6 IRKJ KOUC IRKJ KOUC
                5  |  GFZ   | 6 6 THTI TLSE MAW1 THTI
                5  |  GRG   | 12 3 4 12 IRKJ POLV TLSE YELL ADIS IRKJ POLV TLSE
                5  |  GRG   | YELL
                5  |  JPL   | 3 CHUM
                5  |  MIT   | 2 8 9 19 21 2 3 7 8 9 15 19 21 MAW1 MAW1 NICO
                6  |  COD   | 6 16 KOUC MOBS NNOR KOUC MOBS NNOR XMIS
                6  |  EMR   | 3
                6  |  ESA   | 6 IRKJ KOUC WES2 IRKJ KOUC WES2
                6  |  GFZ   | 6 6
                6  |  GRG   | 3 IRKJ TLSE USNO IRKJ NTUS TLSE USNO
                6  |  MIT   | 7 19 22 3 7 19 21 22

    
 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
               ----+--------+--------+-------------
                4  |  GRG   | ~16:35 | ~ 0.57 ns
                5  |  COD   | ~13:15 | ~ -0.12 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
               ----+--------+---------------
                0  |  COD   |  27

 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 G06 |    |    |    |  4 |    |  4 |  4 |
           PRN G27 |  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 |     .0     .3   -1.1     -34     34    -47     .32
       EMR  |   0 |   -1.1   -4.6    2.4      -4     13    -23     .09
       ESA  |   0 |   -5.8   -6.3   25.6      42    -38    -30     .23
       GFZ  |   0 |    -.6     .0    -.6     -18    -17    -21    -.16
       GRG  |   0 |    5.6  -10.9   21.0     -35     20    -17     .31
       JPL  |   0 |   -1.4   -3.6   11.0     -77     31    -35     .25
       MIT  |   0 |    4.7   -5.8   20.7      -6      0    -34     .22
       NGS  |   0 |    -.3  -12.1   19.0    -108      7    -13     .40
       SIO  |   0 |    2.1   -1.6    8.1      23    -28     32    -.10

       COD  |   1 |     .0     .6   -1.0     -44     32    -30     .15
       EMR  |   1 |    1.9  -10.2    1.4       0      5    -23     .24
       ESA  |   1 |    1.2   -7.3   19.3      44    -58    -27    -.05
       GFZ  |   1 |     .0     .1     .0     -26    -18    -27    -.27
       GRG  |   1 |    4.7  -14.3   15.1     -50     46      6     .14
       JPL  |   1 |    5.1     .4    9.2     -74    -39     11    -.18
       MIT  |   1 |    3.8   -4.6   18.2      -2      2    -35     .13
       NGS  |   1 |    8.2   -8.5   16.9    -111    -38     32     .59
       SIO  |   1 |    2.1   -7.6    1.8     -72    -42     -6    -.03

       COD  |   2 |    -.1     .6    -.4     -30     48    -18     .02
       EMR  |   2 |     .8  -11.2    4.4      -6     -3    -28     .35
       ESA  |   2 |    3.5   -7.4   24.8      34    -53    -19    -.31
       GFZ  |   2 |    -.3     .0     .4     -33     -9    -23    -.47
       GRG  |   2 |   15.5  -12.5   17.6     -26     34    -15     .01
       JPL  |   2 |    2.6   -2.2    4.4     -66     32    -22    -.19
       MIT  |   2 |    9.4   -7.5   21.7      -3     -4    -33     .13
       NGS  |   2 |    9.9   -8.3   21.4    -103    -47     30     .29
       SIO  |   2 |    4.9   -3.4     .3     -49    -90   -105     .0 

       COD  |   3 |    -.2     .6    -.9     -42     37     -4     .04
       EMR  |   3 |    3.4    -.2    5.5      -3     -6    -20     .21
       ESA  |   3 |    4.7   -4.4   16.9      40    -78    -17    -.13
       GFZ  |   3 |     .2     .0     .1     -25    -10    -25    -.46
       GRG  |   3 |    8.8   -6.5   15.7     -41     27    -20     .21
       JPL  |   3 |   -2.6     .1    7.8     -73     25    -21    -.15
       MIT  |   3 |   10.2   -4.7   17.6       2     -4    -33     .16
       NGS  |   3 |    1.4   -7.1   19.6    -144    -10    -10     .41
       SIO  |   3 |    5.8   -2.6    6.8     -39    -75    -98    -.16

       COD  |   4 |     .6    -.2    -.5     -36     31    -32     .08
       EMR  |   4 |    -.5    4.5    -.2       1      1    -14     .24
       ESA  |   4 |    1.6   -5.0   18.6      35    -51     -3    -.17
       GFZ  |   4 |    -.1    -.3     .0     -16     -8    -26    -.44
       GRG  |   4 |    3.1   -8.1   10.0     -28     50     -9     .0 
       JPL  |   4 |     .3    1.0    7.1     -59      3    -18    -.16
       MIT  |   4 |    9.2   -3.4   19.4       2      2    -36     .09
       NGS  |   4 |    -.7   -6.8   19.8    -129      9    -12     .35
       SIO  |   4 |    5.0   -2.6     .8     -12   -102    -57    -.22

       COD  |   5 |     .3     .3    -.2     -27     43    -25    -.04
       EMR  |   5 |   -1.1    1.9    6.5     -18      1    -29     .07
       ESA  |   5 |     .6   -6.1   13.7      26    -13    -23    -.06
       GFZ  |   5 |     .2     .0     .1     -27    -16    -16    -.72
       GRG  |   5 |    1.5  -10.1   10.9     -36     43    -30     .12
       JPL  |   5 |    1.0    -.4    1.8     -65    -24     30     .04
       MIT  |   5 |    6.4   -1.3   14.4       2      6    -34     .10
       NGS  |   5 |   -1.1   -1.1   20.6    -103     -1     -1     .25
       SIO  |   5 |    2.9    1.1   -5.2      -8    -91    -59    -.29

       COD  |   6 |     .0     .3     .6     -39     30    -10    -.28
       EMR  |   6 |   -3.7    6.5    3.7     -27      5    -37     .17
       ESA  |   6 |   -1.7   -6.9   14.1      52    -46    -12    -.33
       GFZ  |   6 |     .2    -.1     .1     -27    -16    -12    -.33
       GRG  |   6 |     .1   -1.6    9.6     -16     29    -29     .18
       JPL  |   6 |   -2.6    1.9    7.1     -46     15    -17    -.14
       MIT  |   6 |    7.9    2.1   17.8       2      9    -44     .03
       NGS  |   6 |   -5.0   -2.2   12.5     -83     17    -29     .25
       SIO  |   6 |    -.6    1.2  -15.9       6    -86     31    -.26


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 1.1749.a). It also displays the computed satellite
position sigmas for the combined orbits (Table 1.1749.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 2.1749.[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 3.1749.[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 5.1749.0-6). 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 1749 summary.                       (Jul 14, 2013 - Jul 20, 2013)

Table 1.1749.a   GPS week: 1749   MJD: 56487.000-56493.000

         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  266|    0     0    -2     8    17     6   .17   11   11 |   -1289     166     20     92
        |    1     0     0    15    25    16   .06           |     391     529
emr   80|   -1    -2    -8   -22   -26     5   .19   15   15 |    1766     389     19    101
        |    1     2     1    19    22    13   .01           |     411     645
esa  150|    0     0     2     3   -20    -8  -.06    6    6 |    -446    -181     13    112
        |    1     1     1    14    25     6   .03           |     723    1734
gfz  196|    0     0     0    -4   -38     0  -.64   10   10 |     -24     264     13     73
        |    1     0     1    41    59     7   .02           |     519     558
grg  132|    2     0     3   -18    14    22   .43   13   12 |     -94     263     25    144
        |    1     0     0    15    19    17   .03           |     337     852
igr  n/a|    0     0     0    10     0    -2  -.31    5    4 |   -1167     616     16     77
        |    0     0     0    13    19     8   .04           |     954    1011
jpl   80|    0     1    -9   -12    -6    -6   .16   14   13 |     994     438     18    102
        |    0     1     1    21    32    13   .03           |     452     742
mit  236|    0     0     2    -5     3     6  -.09   11    9 |    -244     104     27    200
        |    0     0     0    32    25    21   .02           |     177     390
ngs  231|    0     0     3    38    59   -11   .14   10    9 |  -39536   40986   1717   3111
        |    0     0     1    33    49    26   .06           |  101426  108106
sio  422|   -1     2   -10   -27   -93   -36  -.73   21   19 |     ---     ---    ---    ---
        |    0     0     3    34    32    62   .03           |     ---     ---


Table 1.1749.b   GPS week : 1749   MJD: 56487.000-56493.000   

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



Table 2: Daily transformation of each centre to the combined IGS orbit and
         clocks for each day of the week. The transformation displayed is the
         result of the combination after the AC orbits were pre-aligned using
         the SINEX rotations from above. Prior to Wk 1702, AC ERP rotations
         used in the pre-alignment were also displayed.
         WRMS - RMS weighted by the centres SP3 header accuracy codes.
         STA  - Number of stations in the daily solutions.
   
Table 2.1749.0   GPS week: 1749   Day: 0   MJD: 56487.000                            

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  269|   -1     0    -2    23    10   -13   .25   12   12 |    -671    -832     19     96
emr   80|    0    -3    -8   -28   -34   -22   .19   15   15 |    2338    -141     17     87
esa  150|   -1     1     5    18   -56   -13  -.08    8    7 |     372   -2401     14    129
gfz  200|    0     0     0   -61   -16     7  -.65   11   11 |     321     -85     13     65
grg  136|    4    -1     5   -30    -4    17   .40   14   14 |     505    -560     23    149
igr  n/a|    0     0     0     4   -23     3  -.35    5    4 |   -1801      21     16     69
jpl   80|    0     0   -11    -1   -16   -14   .11   14   13 |    1219    -229     16     97
mit  236|    0    -1     2   -39    24    29  -.10   10    9 |     -44    -354     30    217
ngs  229|    0     0     1    78    70     2   .13   10    8 |    -610    -908   1887   3160
sio  426|   -1     1   -15     3   -46    51  -.77   22   23 |     ---     ---    ---    ---

Table 2.1749.1   GPS week: 1749   Day: 1   MJD: 56488.000                            

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  264|    0     0    -3     1    41     3   .20    9    9 |   -1511     546     19     98
emr   80|    1    -4   -10   -51    -6     8   .16   16   16 |    1553     527     13     83
esa  150|    0     0     2   -19   -10    -1  -.03    5    5 |    -952     938     12    107
gfz  200|   -2     0     0    46   -27    -5  -.66   10   10 |     567    -135     15     71
grg  136|    0     0     3    -2    26    51   .42   14   12 |      -3     226     30    136
igr  n/a|   -1     0     0    -9   -11     4  -.35    4    4 |   -2419     890     16     77
jpl   80|    0     1    -8   -38    10     6   .16   13   13 |     348     751     16     87
mit  236|    0     0     2    35    -2    26  -.13   11    9 |    -413    -173     28    193
ngs  234|    0     0     4    14   -17   -61   .13   10    9 | -269548  286146   1844   3008
sio  426|   -2     2   -12   -57   -60    22  -.77   20   19 |     ---     ---    ---    ---

Table 2.1749.2   GPS week: 1749   Day: 2   MJD: 56489.000                            

CENT STA|   DX    DY    DZ    RX    RY    RZ   SCL  RMS  WRMS|    TOFT   TDRFT   SDEV    RMS
        |  [mm]  [mm]  [mm] [uas] [uas] [uas] [ppb] [mm] [mm]|    [ps]  [ps/d]   [ps]   [ps]
--------+----------------------------------------------------+------------------------------
cod  265|    0     0    -4    23    19   -12   .19   11   10 |    -868    -247     19     89
emr   80|   -1    -4    -8    -2   -23     8   .19   15   15 |    1145    1739     14    117
esa  150|    0     0     2     3   -19    -4  -.05    5    5 |   -1080     782     10    111
gfz  196|   -1     1     0    17   -41     6  -.61   10    9 |    -134     703     11     73
grg  133|    2     0     3   -18    22    21   .42   12   12 |    -291     428     37    151
igr  n/a|    0     0     0    27     9     0  -.29    5    5 |   -2184    2519     15     77
jpl   80|   -1     0    -8     9     0    -4   .19   13   13 |     376    1877     15     97
mit  237|    1     0     2   -31    37    14  -.07   10    8 |    -249     212     30    224
ngs  227|    0     0     2     9    22   -21   .05   11   10 |    -818     -27   1584   3116
sio  422|   -2     3   -12   -79   -83  -114  -.70   19   16 |     ---     ---    ---    ---

Table 2.1749.3   GPS week: 1749   Day: 3   MJD: 56490.000                            

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  266|    0     0    -2     5    47    24   .19   10   10 |   -1633     608     19     89
emr   80|    0    -1    -7   -40   -14     6   .19   15   15 |    1922     293     16    101
esa  150|    0     0     2    -8    -8    -9  -.11    6    5 |    -533    1432     13    105
gfz  198|    0     0    -1    36  -113   -12  -.65   11   10 |    -957     958     13     75
grg  133|    1     0     2    -3     0    28   .44   12   10 |    -247     210     22    139
igr  n/a|    0     0     0    -2    15     0  -.30    4    4 |    -898     917     16     72
jpl   80|    0     1   -11   -40     7   -22   .14   14   14 |    1160     447     17    111
mit  237|    1     0     2    16   -16    20  -.09   12    8 |    -510     575     23    184
ngs  233|    0     0     3    22    67   -10   .12    9    8 |   -1563     521   1399   2591
sio  422|    0     2    -9   -29  -110   -87  -.75   24   19 |     ---     ---    ---    ---

Table 2.1749.4   GPS week: 1749   Day: 4   MJD: 56491.000                            

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  269|    0     0    -2     8    25    23   .19   10   10 |   -1675     542     26     85
emr   80|   -1    -1    -6   -17   -55     2   .19   14   14 |    1749     387     44    114
esa  150|    0     0     0    11   -47   -10  -.07    5    5 |    -895     417     19    108
gfz  195|    1     1     1   -25    11     3  -.63   10    9 |    -333     852     17     76
grg  133|    1     0     4   -16    24    21   .40   14   12 |    -579    2030     25    137
igr  n/a|    0     0     1    20     3   -19  -.30    5    5 |    -360     684     17     81
jpl   80|   -1     0    -8     0   -55    -6   .17   14   14 |    1328     504     30    110
mit  236|    0     0     3   -46     5   -14  -.08   11    9 |    -274     640     25    175
ngs  232|    0     0     3    82   131    -7   .20   11    9 |   -1622     598   1647   2885
sio  426|   -2     2    -7   -41  -117   -66  -.69   21   20 |     ---     ---    ---    ---

Table 2.1749.5   GPS week: 1749   Day: 5   MJD: 56492.000                            

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  266|    1     0    -2   -21   -31    19   .13   13   12 |   -1188     210     20     93
emr   80|   -2     0    -7   -25   -53    13   .20   14   14 |    1492      11     17     88
esa  150|    1     0     0    -2   -20   -19  -.02    6    5 |    -806     486     13    102
gfz  191|   -1     0     0     0    37    -2  -.66    9    9 |     391    -444     13     70
grg  129|    1     0     4   -45    41    23   .48   13   11 |      49    -323     23    159
igr  n/a|    0     0     0    17   -24     2  -.33    4    4 |    -449    -130     16     70
jpl   80|   -1     3   -11   -24   -33    15   .15   14   13 |    1046     -31     17    105
mit  236|    1     0     1    17    13   -15  -.07   11    9 |     -33    -218     26    199
ngs  230|    0     0     4    57    40    -5   .17   10    9 |   -1125     158   1734   3160
sio  411|   -1     2    -7     7  -101   -67  -.69   21   19 |     ---     ---    ---    ---

Table 2.1749.6   GPS week: 1749   Day: 6   MJD: 56493.000                            

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  264|    1    -1    -2    19    12     1   .07   12   12 |   -1477     341     20     95
emr   80|   -4     0    -6     4     4    17   .18   14   14 |    2165     -88     17    122
esa  150|    0    -1     0    21    18    -4  -.06    7    7 |     768   -2926     15    122
gfz  193|   -1     1    -1   -44  -119     1  -.60    9   10 |     -29      -1     12     85
grg  130|    2     1     3   -14    -8    -9   .45   13   12 |     -94    -165     15    138
igr  n/a|    0     0     0    18    26    -5  -.22    5    5 |     -61    -583     16     94
jpl   80|   -1     1    -6     6    45   -18   .18   14   14 |    1482    -247     16    109
mit  236|    1     0     3     7   -39   -17  -.07   10   10 |    -185      46     29    211
ngs  234|    0     0     4     4   102    23   .22   10    9 |   -1467     415   1927   3861
sio  425|   -2     3    -4     7  -138     6  -.74   21   20 |     ---     ---    ---    ---

       
       
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 3.1749.0   GPS week: 1749   Day: 0   MJD: 56487.000                            

        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    9   11    5   14    6    8   13    3 |    23   22   18    9   27   14   29   14   22   14    17
   2  |   11   16    8    9   15    4   15   13   11   22    4 |    31   30   33   27   38   32   32   39   43   22    32
   3E |   17   23   14   15   17   10   20   19   14   44    6 |    73   78   67   62   77   66   78   74   72   74    70
   4  |    9   12    6    8   11    4   10   10    5   10    3 |    25   22   28   27   31   27   26   31   31   21    26
   5  |   16   16    6   11    9    4   12    9    7   32    4 |    50   37   38   32   43   36   39   38   43   39    38
   6E |   11   25   13   12   15   10   23   17   13   27    6 |    99   97  103  104   99  102  100  106  102  101   100
   7  |   14   18    6   12   18    5   15    9    9   12    4 |    29   27   20   18   33   18   25   23   29   19    21
   8  |   12    8    7    9   12    3    8    7    7   15    3 |    18   20   14   12   15   10   19   13   22   11    13
   9  |    9    9    7   11   10    4   10    8    7   19    3 |   101  102   99  104  102  103   99  100  101  105   100
  10  |    8    8    8   11    9    3    7    6    7   21    3 |    28   30   34   30   36   31   29   32   37   26    31
  11  |    9   10    5   10   21    3   11   11    7   12    4 |    31   35   36   32   46   32   32   34   38   22    33
  12  |   19   20    8   14   17    5   15   16   11   23    5 |    24   26   17   16   28   13   23   22   26   17    16
  13  |    9   17    6   11   20    5   15    8    6   13    4 |    23   25   19   11   35   14   25   18   26   16    18
  14  |   14   14    8   13   15    4   15    5    7   17    4 |    22   20   15   15   26   12   19   15   25   11    15
  15  |   13   17    7   10   13    4   16   10   13   19    4 |    24   23   15   16   27   14   24   19   23   19    17
  16  |   15   14    7   14   16    5   17   10    8   26    4 |    24   23   15   20   25   14   22   14   24   16    16
  17E |   16   14    7   10   12    5   16    7   10   12    4 |    79   73   73   73   76   72   73   76   75   66    74
  18  |    7   14    8   16   11    3   11   16    9   26    4 |    28   26   26   30   29   26   27   34   29   24    26
  19E |    6   15   10    8   14    4   17    7   11   13    4 |    41   36   39   35   43   35   37   40   42   36    37
  20  |    8   10    6   11   13    5   11    6    8   42    3 |    27   21   28   26   28   25   21   24   27   33    24
  21  |   10   22    5   10   13    3   17   11   14   26    4 |    35   33   36   34   42   33   37   38   42   33    35
  22  |   15   10    7   12   10    4   10    8   10   18    4 |    28   27   30   33   32   29   28   32   33   18    28
  23  |   11   15    7   10   14    5   16   12    7   20    4 |    21   21   14   10   25   11   25   15   25   18    15
  24  |   16   18    8    9   12    5   13    7   11   11    4 |    28   28   22   16   33   18   25   22   30   17    22
  25  |    8   13    8    9   22    4   15    7    9   14    4 |    19   24   18   14   30   14   25   16   23   11    16
  26  |    7   11   10    9   10    6   10   11   10  ---    3 |    20   24   15   13   20   11   25   19   28  ---    17
 X27E |  112  ---    5  ---  ---   73  ---  ---  ---  ---    0 |  9999  --- 9999  ---  --- 9999  ---  ---  ---  ---  9999
  28  |    9   14    8   12   13    4   11    9   11   17    4 |    22   23   21   17   27   15   24   17   22   15    18
  29E |   11   18    7   10   12    3   18    8   10   11    4 |    52   38   41   34   46   37   38   44   48   33    42
 X30  |    4  ---  ---  ---  ---   66  ---  ---  ---  ---    0 |    53  ---  ---  ---  ---   36  ---  ---  ---  ---    52
  31  |   11   17    7   14   21    4   18    8   10   16    4 |    25   27   16   18   40   15   26   18   26   14    19
  32  |    9    7    5    9   12    4    9   10    6   21    3 |    18   19   18   21   24   17   21   22   23   18    18
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |   12   15    8   11   14    5   14   10   10   22      |T   36   34   32   30   39   30   35   33   37   29    32
 WRMS |   12   15    7   11   14    4   13    9    8   23      |NE  29   28   25   24   33   23   29   26   31   23    26
 MEDI |   11   14    7   10   13    4   15    9    9   18      |MD  28   26   22   21   32   25   26   23   29   19    24

Table 3.1749.1   GPS week: 1749   Day: 1   MJD: 56488.000                            

        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   13    6   11    7    5   13    8   11   17    3 |    20   22   17    9   25   12   25   15   18   12    16
   2  |   10   18    6    6   13    4   16   13    8   21    4 |    23   27   27   19   32   23   28   29   28   15    24
   3E |    9   24    7   14   14    7   14   18   12   36    5 |    70   79   66   56   73   61   73   68   69   59    67
   4  |    8   13    4    8    9    4   12    9    8   10    3 |    17   17   20   17   21   19   18   22   23   16    18
   5  |   12   16    4    6    8    2   11    7    9   30    3 |    31   29   25   20   29   21   25   25   21   24    24
  X6E |   13   24    9   15  ---    6   18   22   14   23    6 |    96   96   99  101  ---   97   99  101   95  100    97
   7  |   12   18    5   11   15    6   14   13   10   12    4 |    19   25   15   12   29   12   20   18   18   15    14
   8  |    8   11    3    7   13    4    8    9    7   12    3 |    18   22   15   13   14   12   18   16   15   15    14
   9  |   10   12    4    7   29    8   12   11    6   29    4 |    88   80   83   83   67   81   85   83   91   94    82
  10  |    7   13    4    8   11    5    9    7    5   21    3 |    22   22   24   21   26   22   25   21   26   20    22
  11  |    7   14    5   12   18    4   10   11   12   13    4 |    21   29   23   23   40   22   29   24   24   18    24
  12  |    8   18    7   12   17    4   16   12    7   19    4 |    16   22   17   17   26   13   21   18   17   16    14
  13  |    6   14    4    8   20    4   13   12    9   12    3 |    16   22   16   11   33   10   20   14   18   11    14
  14  |   13   15    5   13   13    4   16    6   13   14    4 |    21   22   18   14   26   11   17   13   16    8    15
  15  |    8   17    6   12   13    4   17    9   10   17    4 |    19   23   16   13   29   11   19   18   17   16    15
  16  |    9   17    6    8   14    6   14    9   13   23    4 |    20   23   17    9   24   12   21   12   18   11    14
  17E |   13   16    6   11   15    5   18   16   10   10    4 |    67   67   66   64   71   66   65   69   65   65    66
  18  |    7   14    9   13    7    3   13   14    7  ---    4 |    21   23   24   21   19   17   19   25   13  ---    18
  19E |    6   19    5   14   11    4   12   15   13   15    4 |    34   38   32   29   35   29   34   35   37   28    32
  20  |   12   12    7   10   13    4   13    8    7   42    3 |    21   16   22   20   20   18   15   19   19   30    17
  21  |   10   21    5    7   11    4   16   12    9   24    4 |    28   33   24   23   32   24   27   27   27   24    25
  22  |    5   13    7    9    8    2   10    8   10   18    3 |    21   24   22   22   21   18   19   19   19   12    19
  23  |    8   16    4    8   15    5   14   11    9   22    3 |    18   22   15   11   26   10   19   14   21   18    14
  24  |    9   15    4    7   10    5   12    9   11   15    3 |    29   32   31   24   31   25   29   28   26   30    27
  25  |    7   15    4    7   12    4   12    8    9   12    3 |    16   24   19   11   27   14   25   17   18   15    17
  26  |   10   11    4    9    7    4   10    9    8   22    3 |    20   25   17   11   20   13   22   17   19   25    17
 X27E |   15   24   10  ---  ---   16  ---   33   18  ---    9 |   431   86  411  ---  ---  424  ---   65   87  ---   416
  28  |    6   13    5   12   12    4   14   14    7   17    3 |    18   23   17   15   25   13   21   18   19   15    16
  29E |   11   22    3    9   14    4   19   12    9   11    4 |    45   36   39   34   40   36   38   43   47   36    39
 X30  |    4  ---  ---  ---  ---   30  ---  ---  ---  ---    0 |    28  ---  ---  ---  ---   28  ---  ---  ---  ---    27
  31  |   10   15    5   10   17    4   15    8   12   15    4 |    25   28   18   15   35   16   24   20   22   16    19
  32  |    6    9    4   10   11    4   10   11   12   21    3 |    17   18   20   19   22   15   18   20   18   19    17
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |    9   16    5   10   14    4   13   11   10   20      |T   42   34   41   25   31   37   30   30   31   27    39
 WRMS |    9   16    5   10   12    4   13    9    9   19      |NE  23   26   22   18   27   18   24   22   22   20    20
 MEDI |    9   15    5    9   13    4   13   11    9   17      |MD  21   24   22   19   27   18   22   20   21   18    18

Table 3.1749.2   GPS week: 1749   Day: 2   MJD: 56489.000                            

        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  |   12   11    4    7    9    5   12    8   10   14    3 |    18   18   13    9   24   10   24   13   17   14    13
   2  |   11   16    6    8   13    4   16   13    8   22    4 |    27   27   28   23   31   25   29   30   31   16    26
   3E |   17   19    6   13   15    6   17    9    9   30    4 |    71   77   64   55   75   61   75   68   68   56    67
   4  |    8   13    4    9    9    5   11   10    8   10    3 |    16   17   19   18   23   18   18   22   18   16    17
   5  |   12   17    5    7    8    4   11    7   11   30    3 |    29   30   27   23   29   23   26   25   28   27    25
   6E |   14   20    6   14   16    8   19   19   12   14    5 |    98   99  100  100  137  100   99  105  104  112   100
   7  |   12   18    5    8   15    5   18   10   10   13    4 |    23   25   16   14   27   14   23   18   21   16    16
   8  |    8   10    5    8    8    3    8    7    7   10    2 |    17   20   14   15   15   11   19   12   15   11    13
   9  |    8    9    5    8    7    4    9    7    8   16    2 |    44   45   40   42   48   41   42   42   43   45    42
  10  |    8   11    4    9   12    3    7    7    9   18    3 |    21   23   25   21   28   22   22   24   24   22    23
  11  |    8   11    4    9   19    4    8   11   13   15    3 |    21   28   23   24   40   24   28   26   29   19    24
  12  |   10   16    6   14   15    6   14   13   14   19    4 |    19   22   15   19   26   12   21   19   23   17    15
  13  |   11   14    4   10   19    5   12   11   10   12    4 |    18   22   14   12   34   11   19   15   18   13    14
  14  |   14   16    4   12   12    4   13    6   11   15    4 |    18   21   13   14   24   10   18   13   21   10    13
  15  |    8   17    5   10   11    5   17    9   11   16    4 |    20   24   13   14   27   10   21   18   20   16    15
  16  |   15   18    5   12   12    6   15    7   11   23    4 |    19   24   18   13   24   14   23   15   23   14    15
  17E |   15   17    8    9   12    5   17   23   10   11    5 |    62   59   59   58   62   58   59   55   62   55    58
  18  |    7   11    8   18    7    5   10   16   10   26    4 |    17   19   22   29   18   18   19   22   21   16    18
  19E |   13   16    5    8   15    5   13    7   12   11    4 |    40   37   35   31   36   31   33   37   39   27    35
  20  |    9   12    5    9   12    4   10    7    9   41    3 |    18   17   21   17   20   19   19   19   20   30    17
  21  |    9   20    5    8    9    5   23   11    8   25    4 |    25   34   27   28   36   26   32   28   28   25    26
  22  |    5   11    5    9    7    3    8    7   14   17    3 |    18   22   22   23   23   19   22   22   20   13    20
  23  |    7   16    4    8   13    5   13   11   12   22    3 |    19   23   14   10   25   10   20   16   17   18    13
  24  |   14   17    4    9    9    4   12    8   11    9    3 |    29   29   22   23   28   18   24   21   22   21    22
  25  |    8   12    4    9   14    3   12    8   14   14    3 |    18   22   16   17   25   13   24   16   16   11    16
  26  |    9   12    6    5    7    4   10    5   11   15    3 |    19   24   15   11   19   12   23   17   20   18    16
 X27E |   12   12    7   15  ---    8   12   12   13  ---    4 |   391   32  381   23  ---  384   23   34   40  ---   383
  28  |    8   15    4   10   13    4   14   11    9   15    3 |    21   21   14   18   26   12   22   16   19   13    15
  29E |   13   24    5    6   11    4   19    9   11   19    4 |    48   41   43   41   44   43   44   42   51   44    42
 X30  |    4  ---  ---  ---  ---   59  ---  ---  ---  ---    0 |    30  ---  ---  ---  ---   40  ---  ---  ---  ---    29
  31  |    8   16    6   13   16    5   13    7    9   14    4 |    22   26   14   17   33   13   23   15   21   10    16
  32  |    9    9    3    9   10    3    6   10    9   21    3 |    18   19   16   15   20   13   20   18   12   13    15
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |   11   15    5   10   12    5   13   10   11   19      |T   39   30   37   25   34   35   29   27   29   24    36
 WRMS |   10   15    5    9   11    5   13    8   10   16      |NE  21   24   19   18   26   17   23   20   21   17    19
 MEDI |    9   16    5    9   12    5   12    9   10   15      |MD  21   24   21   19   27   18   23   21   21   16    17

Table 3.1749.3   GPS week: 1749   Day: 3   MJD: 56490.000                            

        Weighted Average                                            Orbit Dynamics (7 days)
 PRN  |  cod  emr  esa  gfz  grg  igr  jpl  mit  ngs  sio  IGS |   cod  emr  esa  gfz  grg  igr  jpl  mit  ngs  sio   IGS
------+--------------------------------------------------------+---------------------------------------------------------
   1  |    6   12    7    8    7    6   13   10   10   14    3 |    20   21   20   13   24   16   25   17   24   17    17
   2  |    9   18    8   11   11    3   18   14    8   21    4 |    29   27   34   22   32   26   27   33   31   18    28
   3E |   11   17    7   10   13    5   16    8    6   24    4 |    72   78   69   62   77   67   77   69   72   56    70
   4  |    7   11    4   10    8    3   11    7    5   12    3 |    18   18   25   22   21   21   18   23   23   17    21
   5  |   11   15    6    9    8    3   14    6    9   33    3 |    32   27   28   25   28   24   27   28   28   29    26
   6E |   19   20   10   20   18    7   21   35   16   76    7 |   175  182  182  185  167  180  179  183  176  180   180
   7  |   10   20    8   13   15    4   19   10    8   15    4 |    25   26   19   17   31   14   26   21   26   13    18
   8  |    8   10    4   12    7    4   10    8    9   12    3 |    16   19   14   15   15   10   18   13   24    9    13
   9  |    8    8    5   12    7    4   10    8   10   18    3 |    20   23   20   21   22   17   21   17   25   23    18
  10  |    6   10    4   10    9    4    8    5    8   18    2 |    26   23   28   26   29   26   25   27   30   24    26
  11  |    8   12    3   11   16    4   13   11    8   13    3 |    24   28   26   21   39   23   27   26   26   21    25
  12  |    9   17    6   16   16    4   16   10   10   18    4 |    16   22   17   20   28   15   22   17   24   18    16
  13  |    8   16    4   10   18    4   15    8    6   11    4 |    19   21   17   15   34   11   23   15   23    9    16
  14  |   15   12    5   12   11    3   13    6    8   13    3 |    20   18   19   13   25   13   16   14   20    9    15
  15  |    7   16    5   10   11    4   18    8    9   15    3 |    20   23   18   10   27   13   22   19   21   16    16
  16  |   18   16    5    9   14    5   14    9    7   25    4 |    20   27   22   16   30   19   24   20   28   17    20
  17E |   12   15    5   13   11    3   16   22   10   10    5 |    66   60   63   59   66   62   61   70   58   58    62
  18  |    8   12    6   18    7    3   10   13    8   26    4 |    21   24   25   32   23   20   21   26   24   17    21
  19E |    6   17    3    9   11    4   14    7    8   13    3 |    37   35   33   28   37   30   29   34   39   28    32
  20  |    5   10    5    8   11    4   12    8   11   42    3 |    21   17   20   16   21   18   16   20   21   30    17
  21  |   12   20    5   11   10    5   18   11    9   22    4 |    29   33   29   29   35   27   31   28   30   23    28
  22  |    7    8    3    9    8    2   11    7    6   17    2 |    21   23   26   28   27   22   21   27   23   16    23
  23  |   10   17    5    8   12    2   15   11    9   24    4 |    23   22   18   12   25   12   23   15   22   21    16
  24  |   16   15    6   10   11    6   14    7    9   11    4 |    26   23   23   17   27   17   24   18   24   16    20
  25  |   12   11    5    9   15    3   16    7   10   12    4 |    17   21   17   12   28   13   25   14   19    9    15
  26  |    9   11    6    8    6    5    9    7    8   16    3 |    17   24   15   12   19   11   22   15   19   17    15
 X27E |   10   11    8   18  ---    7   11   15   11   32    5 |   338   44  338   20  ---  338   19   41   51   25   337
  28  |    6   15    4   13   14    3   14   10    8   15    3 |    22   23   22   23   26   17   24   21   21   19    19
  29E |    8   22    6   10   14    4   20   12    8   17    4 |    47   36   41   36   39   38   37   47   42   42    40
 X30  |    4  ---  ---  ---  ---   27  ---  ---  ---  ---    0 |    50  ---  ---  ---  ---   53  ---  ---  ---  ---    49
  31  |    9   15    7    9   19    5   12    9    9   13    4 |    21   25   15   10   37   12   22   19   22    9    17
  32  |    8    8    3    9   11    2   10   11    9   23    3 |    18   20   20   17   23   18   19   23   25   20    19
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |   10   15    6   11   12    4   14   12    9   24      |T   41   32   40   27   35   37   31   30   33   26    39
 WRMS |   10   15    5   10   10    4   14    8    8   19      |NE  22   23   21   18   27   18   22   20   24   17    20
 MEDI |    8   15    5   10   11    4   14    9    9   17      |MD  21   23   22   20   28   18   24   21   24   18    20

Table 3.1749.4   GPS week: 1749   Day: 4   MJD: 56491.000                            

        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   12    5    8    8    4   13    9   15   16    3 |    20   20   19   10   27   14   26   18   26   16    18
   2  |   10   16    6   10   14    6   17   14   10   22    4 |    25   28   26   24   30   26   30   32   35   14    26
   3E |    9   15    7    9   15    5   18   12   10   25    4 |    74   80   72   63   80   70   78   74   77   57    73
   4  |    8   10    4    8    9    4   12    7    6   12    3 |    16   15   18   18   19   17   17   20   21   14    16
   5  |   12   17    7   11    7    3   16    7    9   34    4 |    31   28   27   23   27   24   26   28   30   30    25
   6E |   14   18   11   13   20    7   21   24   17   50    6 |   124  123  121  125  120  125  133  127  126  131   123
   7  |   12   18    5   10   16    4   14   10    6   15    4 |    21   24   14   14   31   13   22   19   28   13    16
   8  |    6    8    4    8    9    3   10    7    9   12    2 |    17   20   13   11   16   10   18   14   22   12    13
   9  |    9    9    4    8    7    5   11    8   10   20    3 |    25   26   22   18   24   19   21   21   25   26    21
  10  |    8    9    3    9    9    5   14    6    6   20    3 |    23   26   25   23   28   24   28   25   27   23    24
  11  |   10   15    5    8   18    3   11   11   14   14    4 |    22   27   20   19   37   19   24   20   27   16    20
  12  |   10   15    5   15   16    7   15    8   13   18    4 |    18   26   15   18   25   15   25   17   24   18    16
  13  |   11   17    4    9   17    4   12    7    7   11    3 |    18   25   13   11   33   11   22   13   21   10    14
  14  |   13   13    5   11   13    5   14    7   11   10    4 |    22   20   17   15   28   14   19   16   23   11    16
  15  |    8   17    5   11   13    6   17    9   12   16    4 |    21   24   15   17   28   14   21   18   20   20    16
  16  |   17   13    6    8   17    4   16    8    7   26    4 |    25   22   17   16   27   15   25   18   25   24    17
  17E |   13   14    6   12   19    6   15   13   13   11    4 |    43   40   38   39   35   37   38   42   42   33    38
  18  |    8   13    6   13    7    3   10   14   13   25    4 |    15   22   20   24   19   18   21   24   24   20    18
  19E |    8   13    5    9   11    3   15   19   12   13    4 |    44   40   40   38   49   39   39   44   47   35    41
  20  |    6   10    7   10   12    4   12    7   12   42    3 |    18   19   20   18   20   19   19   18   24   31    17
  21  |   10   17    6   10   13    4   18   12   10   23    4 |    26   32   24   25   33   22   28   28   29   22    24
  22  |    7   11    4   11    7    3   12   11   11   17    3 |    19   23   22   26   24   20   20   22   24   17    20
  23  |   11   15    3    9   13    2   12    9    7   26    3 |    20   21   15   14   25   13   21   17   23   22    15
  24  |   13   13    7   11   11    6   13    8   12    8    4 |    22   20   15   14   26   11   21   18   22   13    15
  25  |    8   11    4    8   19    3   14   10   12   12    4 |    17   24   18   14   27   14   27   19   20   13    17
  26  |    9   11    5    8    8    5   10    5   11   12    3 |    22   27   17   15   23   14   23   18   23   17    18
 X27E |   12   11    6   16  ---    5   13   13   11   25    4 |   193   37  196   19  ---  194   22   35   41   18   195
  28  |    7   13    5   11   14    4   13    8   12   15    3 |    18   24   15   17   28   12   23   16   21   14    16
  29E |   12   19    4    8   17    5   20   10    8   14    4 |    42   37   37   32   38   36   40   39   45   37    37
 X30  |    4  ---  ---  ---  ---   54  ---  ---  ---  ---    0 |    40  ---  ---  ---  ---   34  ---  ---  ---  ---    40
  31  |   10   13    7    8   19    7   13    7    8   11    4 |    22   26   15   15   36   15   23   18   26   13    18
  32  |    8    8    5    6   10    3   11    7   10   22    3 |    16   17   16   16   20   15   21   18   19   17    15
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |   10   14    5   10   14    5   14   11   11   21      |T   33   30   31   24   32   29   29   27   31   24    31
 WRMS |   10   14    5    9   12    5   14    9    9   20      |NE  21   23   18   17   26   17   22   19   24   17    18
 MEDI |   10   13    5    9   13    4   13    9   11   16      |MD  22   25   19   18   27   17   23   19   25   18    18

Table 3.1749.5   GPS week: 1749   Day: 5   MJD: 56492.000                            

        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  |   13   13    4    8   10    4   12   12   10   18    3 |    21   26   17   12   30   16   29   23   25   15    19
   2  |   17   16    7    9   12    5   16   15    9   21    4 |    25   28   26   18   33   20   25   30   28   14    24
   3E |    6   15    8    9   11    4   16    9   10   32    4 |    78   81   77   69   83   73   80   78   78   65    77
   4  |   12   10    5    8    9    3   11    7    8   13    3 |    22   19   18   16   20   17   16   17   18   16    17
   5  |   20   14    6    8    8    4   15    8    8   36    4 |    37   27   23   16   26   20   27   25   22   28    23
   6E |   18   18   10   16   16    7   18   24   13   27    6 |   175  177  176  175  162  176  184  183  176  180   177
   7  |   14   19    6    8   17    5   18   11    9   16    4 |    22   29   18   13   32   15   24   20   24   17    18
   8  |    7    9    4   10   10    4   11    7    9   14    3 |    22   24   17   13   19   14   21   14   21   15    16
   9  |    6   11    5   10    9    4   10    9    8   19    3 |    32   34   28   29   30   28   31   27   34   32    28
  10  |   11    7    5    8   10    3    9    6    7   24    3 |    24   25   25   22   24   22   24   21   22   22    23
  11  |   10   14    6    7   19    4   10   10    9   15    4 |    23   30   23   17   39   18   26   20   24   17    22
  12  |   11   18    7   12   17    6   15   11    9   19    4 |    23   27   20   17   27   18   23   20   24   20    18
  13  |   13   16    6   11   19    6   12    9   10   13    4 |    19   25   16   13   37   13   22   14   23   13    16
  14  |   18   14    6    9   12    6   15    5    7   13    4 |    26   22   15   13   26   12   21   15   17   12    15
  15  |    8   19    6   10   13    5   21   11   12   15    4 |    24   26   20   16   32   17   25   20   24   15    19
  16  |   29   16    6   11   12    5   16    9    8   26    5 |    31   24   18   18   25   14   23   18   21   18    17
  17E |   17   13    6    7   13    4   13    8    9   10    4 |    46   41   41   40   43   40   45   44   41   39    41
  18  |    9   14    6   11    6    2   11   12    8   27    3 |    17   19   18   20   19   13   15   19   18   20    15
  19E |    9   18    5    7   17    3   17   14   10   14    4 |    46   41   40   37   52   37   38   41   41   33    40
  20  |    8    9    5    6   13    3   11    8    8   43    3 |    22   23   23   17   20   18   22   19   25   34    20
  21  |   13   16    5   10   10    5   17   12   10   26    4 |    23   28   21   18   31   18   28   23   25   23    22
  22  |    7   12    5    8    6    2   12    9    7   15    3 |    21   21   21   16   23   16   17   20   17   17    17
  23  |   14   17    5    6   15    5   16    9    6   29    4 |    22   22   14    9   28   11   23   14   20   27    14
  24  |   11   15    7    7   12    4   12   12   12   10    4 |    23   26   21   12   25   16   21   18   20   16    18
  25  |    9   12    4   11   18    4   13   10   15   11    4 |    20   24   19   14   28   17   24   17   18   15    18
  26  |   10    9    6    7    8    5    9   10    9   12    3 |    26   27   22   18   25   19   24   20   24   20    21
 X27E |   13   13    5   10  ---    4   13   12   11   15    4 |   288   39  287   14  ---  289   25   36   37   21   286
  28  |    7   12    4   10   13    3    9    8    9   17    3 |    27   27   23   20   28   19   25   21   23   18    21
  29E |   10   19    4   13   11    5   19   10   15   13    4 |    35   32   33   28   36   30   31   34   39   28    32
 X30  |    3  ---  ---  ---  ---   58  ---  ---  ---  ---    0 |    31  ---  ---  ---  ---   30  ---  ---  ---  ---    30
  31  |    9   17    6   11   14    6   17    8   11   11    4 |    23   27   16   15   33   15   25   18   23   14    18
  32  |    9    6    4    8    9    3    9    7    9   22    3 |    23   24   21   19   23   18   24   21   23   17    21
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |   13   14    6    9   13    4   14   11   10   21      |T   40   33   37   24   35   34   31   29   31   27    36
 WRMS |   12   14    5    9   11    4   13    9    9   19      |NE  24   25   20   16   27   17   23   19   22   19    19
 MEDI |   10   14    6    9   12    4   13    9    9   16      |MD  23   27   21   17   28   18   24   20   24   18    20

Table 3.1749.6   GPS week: 1749   Day: 6   MJD: 56493.000                            

        Weighted Average                                            Orbit Dynamics (7 days)
 PRN  |  cod  emr  esa  gfz  grg  igr  jpl  mit  ngs  sio  IGS |   cod  emr  esa  gfz  grg  igr  jpl  mit  ngs  sio   IGS
------+--------------------------------------------------------+---------------------------------------------------------
   1  |    5   14   10    8    8   10   12   12   12   17    4 |    21   26   21   15   29   21   30   25   27   23    21
   2  |   11   16    8    8   13    5   17   11    9   21    4 |    22   26   27   23   31   25   28   30   33   19    25
   3E |    7   17    7   11   12    5   16    9   10   31    4 |    76   85   72   71   83   72   85   73   77   66    75
   4  |   13   10    4    7    8    4   10    9    9   16    3 |    17   19   19   21   22   19   19   22   26   20    18
   5  |   22   14    7    8   10    6   13   10   10   39    4 |    35   30   33   28   32   30   31   32   33   34    30
   6E |   13   18    7   11   11    5   16   18    9   24    4 |   180  182  185  178  170  182  183  182  187  185   183
   7  |   11   16   10   13   17    5   16   10    9   16    4 |    25   24   16   18   31   15   24   20   22   14    17
   8  |    7   10    6    9    9    4   10    8    9   17    3 |    19   20   16   14   14   12   19   14   19   15    13
   9  |    8   10    6    9    8    5    9    9   10   21    3 |    28   30   26   23   27   25   31   25   30   29    25
  10  |   11   10    5   11   10    4    8    7    7   25    3 |    26   28   31   27   32   30   28   27   33   31    28
  11  |    7   16    5   10   18    3   10    8    8   13    3 |    22   31   25   21   41   24   30   23   29   19    25
  12  |   13   14    6   10   16    6   13   10    8   18    4 |    18   23   16   17   27   15   23   18   23   18    16
  13  |    8   16    6    7   20    5   12    7    9   15    4 |    19   22   15    9   36   13   22   17   21   12    15
  14  |   25   14    6    9   12    5   14    7    9   11    4 |    29   23   23   18   27   19   24   20   23   18    20
  15  |   11   17    7   11   13    7   20   13   10   13    4 |    22   22   18   18   29   15   23   22   23   16    17
  16  |   29   16    7   16   14    6   19    8   10   24    5 |    23   28   22   24   27   20   26   20   28   20    20
  17E |   19   11    6    8   14    4   18   11    9   14    4 |    51   52   51   49   57   49   52   52   57   51    51
  18  |    8   12    8   11    7    3    8   13    9   26    3 |    19   24   26   30   24   25   25   29   30   23    24
  19E |    8   16    5    9   10    3   13   11   10   10    3 |    42   41   37   38   43   37   39   40   44   32    38
  20  |    7   10    6    9   12    4   11    7   11   43    3 |    21   21   27   22   24   25   21   22   26   36    22
  21  |   14   18    7    8   12    4   26   11    9   25    5 |    27   32   27   32   36   29   45   32   36   29    30
  22  |    5   10    6    7    7    4   12   13    8   17    3 |    26   27   30   30   30   30   27   34   31   26    28
  23  |   10   17    4    8   14    5   14    8    9   32    4 |    21   24   17   10   28   15   23   17   23   30    16
  24  |    9   14    7    8   16    5   12   14   14    9    4 |    22   24   24   22   26   19   24   22   28   20    21
  25  |    8   11    6    7   17    5   11    9    6   11    3 |    16   23   18   16   27   14   24   17   18   10    16
  26  |   10   12    7    9    6    5    9    9    9   12    3 |    19   24   16   14   20   12   20   18   19   14    15
 X27E |   10   13    7    9  ---    6   12   11   12   18    4 |   338   44  330   15  ---  336   24   37   45   16   332
  28  |    5   13    4    9   14    4   14   10   13   18    4 |    22   27   19   23   31   19   27   19   23   19    20
  29E |   12   21    7   11    9    4   17    9   10   10    4 |    39   38   37   35   38   35   38   39   43   30    36
 X30  |    2  ---  ---  ---  ---   49  ---  ---  ---  ---    0 |    39  ---  ---  ---  ---   27  ---  ---  ---  ---    39
  31  |    8   18    7    7   17    6   20   12    8   12    4 |    20   30   18   17   32   17   29   20   23   16    18
  32  |   11    6    6    7   10    3   14    7    9   20    3 |    18   21   22   19   25   19   23   23   23   15    20
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |   12   14    7    9   13    5   14   10   10   21      |T   41   34   40   28   36   38   34   31   35   29    39
 WRMS |   12   14    7   10   12    5   14   10    9   20      |NE  22   25   22   20   28   20   25   22   26   21    21
 MEDI |   10   14    6    9   12    5   13   10    9   17      |MD  22   26   24   22   29   21   26   23   28   20    21



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 4.1749   GPS week: 1749   MJD: 56487.0-56493.0

CENT| CLK EPO  |        BRUX       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3035 |U    8     8    17 |U    6    10    28 |U    8     7    15 |
emr | emr 2954 |     8     8    20 |U    8     9    26 |     9     8    19 |
esa | esa 2976 |     6     8    18 |U    6    10    29 |     8     7    16 |
gfz | gfz 2941 |U    6     7    18 |U    7    10    31 |U    8     7    15 |
grg | grg 2866 |U    8     9    26 |U    9    12    35 |    11     9    20 |
igr | igr 2961 |     6     7    17 |     6     9    28 |     8     7    15 |
igs | igs 2922 |     6     8    18 |     6     9    29 |     8     7    16 |
jpl | jpl 2940 |     9     9    20 |U    6    10    27 |U    9     8    18 |
mit | mit 2962 |     8     8    21 |U    9    15    41 |U   11     9    19 |



Table 5: Daily Precise Navigation Summary using the corresponding Centre orbit 
         positions and satellite clock corrections at 15 min intervals.

         Each line gives the daily station RMS w.r.t. the estimated coordinates 
         for the Latitude, Longitude and Height components.
        
         CLK  - Satellite clocks used.
         EPO  - Number of satellite clock epochs available for that day.
         Units: mm.

Table 5.1749.0   GPS week: 1749   Day: 0   MJD: 56487.0

CENT| CLK EPO  |        BRUX       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3030 |     4     6    15 |     6     8    27 |     9     7    16 |
emr | emr 2872 |     6     6    13 |     7     8    24 |     8     6    14 |
esa | esa 2976 |     4     6    15 |     6     8    28 |    10     6    14 |
gfz | gfz 2872 |     4     4    15 |     7     7    30 |     9     5    13 |
grg | grg 2880 |     7     6    24 |     7     8    28 |    11     9    28 |
igr | igr 2879 |     5     5    14 |     5     6    25 |     9     4    13 |
igs | igs 2873 |     4     5    14 |     6     6    27 |     9     5    13 |
jpl | jpl 2872 |     8     8    15 |     5     6    25 |     8     5    14 |
mit | mit 2880 |     5     6    16 |     8    10    42 |    13     7    17 |

Table 5.1749.1   GPS week: 1749   Day: 1   MJD: 56488.0

CENT| CLK EPO  |        BRUX       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3032 |     5     8    17 |     6     7    22 |     8     6    15 |
emr | emr 2968 |     9    12    19 |     7     6    25 |     9     6    17 |
esa | esa 2976 |     7    10    19 |     7     7    26 |     9     6    14 |
gfz | gfz 2872 |     6     9    20 |     7     7    27 |     9     6    13 |
grg | grg 2784 |     9    12    24 |     9     8    40 |    13     9    19 |
igr | igr 2975 |     6     9    18 |     6     7    24 |     9     6    14 |
igs | igs 2889 |     6    10    18 |     7     6    29 |     9     6    14 |
jpl | jpl 2872 |    12    14    21 |     6     9    25 |    13    15    24 |
mit | mit 2976 |     6    10    24 |     7     7    32 |    10     7    17 |

Table 5.1749.2   GPS week: 1749   Day: 2   MJD: 56489.0

CENT| CLK EPO  |        BRUX       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3025 |     6     4    14 |  ----  ----  ---- |     9     7    13 |
emr | emr 2968 |     8     6    19 |  ----  ----  ---- |     7     5    16 |
esa | esa 2976 |     6     4    14 |  ----  ----  ---- |     8     4    12 |
gfz | gfz 2968 |     6     4    15 |  ----  ----  ---- |     8     4    11 |
grg | grg 2880 |     8     8    17 |  ----  ----  ---- |    10     5    19 |
igr | igr 2975 |     6     4    14 |  ----  ----  ---- |     8     5    11 |
igs | igs 2894 |     6     4    14 |  ----  ----  ---- |     8     4    13 |
jpl | jpl 2968 |     9     7    19 |  ----  ----  ---- |     6     4    13 |
mit | mit 2976 |     6     4    14 |  ----  ----  ---- |    12     7    15 |

Table 5.1749.3   GPS week: 1749   Day: 3   MJD: 56490.0

CENT| CLK EPO  |        BRUX       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3039 |    10     9    17 |     6    24    42 |     6     4    13 |
emr | emr 2968 |     7     8    21 |     9    19    43 |     9     7    17 |
esa | esa 2976 |     7     7    22 |     7    21    42 |     7     4    16 |
gfz | gfz 2969 |     7     7    22 |     7    21    45 |     8     4    15 |
grg | grg 2880 |     8     9    29 |     9    26    35 |     9     7    17 |
igr | igr 2976 |     7     7    22 |     7    22    43 |     7     4    17 |
igs | igs 2972 |     7     7    21 |     8    22    44 |     7     5    15 |
jpl | jpl 2968 |    10     6    21 |     7    21    44 |     7     6    17 |
mit | mit 2976 |     7     6    22 |     7    25    48 |     9     7    18 |

Table 5.1749.4   GPS week: 1749   Day: 4   MJD: 56491.0

CENT| CLK EPO  |        BRUX       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3029 |     6     6    15 |     6     8    27 |     8    10    15 |
emr | emr 2968 |     8    10    22 |     7     8    20 |    12    12    24 |
esa | esa 2976 |     7     8    21 |     7     7    26 |     8    11    16 |
gfz | gfz 2969 |     7     8    20 |     6     8    27 |     8    11    15 |
grg | grg 2880 |     6     7    24 |     7    10    36 |     9    10    17 |
igr | igr 2976 |     6     7    19 |     6     8    22 |     8    11    14 |
igs | igs 2933 |     8    10    26 |     7     6    23 |     9    11    14 |
jpl | jpl 2968 |     9     9    18 |     7     8    21 |     8    10    16 |
mit | mit 2976 |     7     9    22 |     6    10    28 |    12    14    23 |

Table 5.1749.5   GPS week: 1749   Day: 5   MJD: 56492.0

CENT| CLK EPO  |        BRUX       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3038 |     7    11    20 |     6     8    24 |     9     9    18 |
emr | emr 2968 |     8     9    22 |     9     8    25 |    11     9    22 |
esa | esa 2976 |     7     9    17 |     6     8    27 |     8     8    17 |
gfz | gfz 2968 |     7    10    18 |     6     9    26 |     9    11    17 |
grg | grg 2880 |    13    13    35 |    10    10    37 |    12    12    23 |
igr | igr 2975 |     7    10    18 |     5     8    25 |     9    10    19 |
igs | igs 2967 |     7     9    18 |     6     9    27 |     9     9    18 |
jpl | jpl 2968 |     7     9    23 |     6    10    23 |     9     7    22 |
mit | mit 2976 |    10    14    24 |    19    31    67 |    11    12    21 |

Table 5.1749.6   GPS week: 1749   Day: 6   MJD: 56493.0

CENT| CLK EPO  |        BRUX       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3054 |    15    12    21 |     6     5    25 |     7     7    17 |
emr | emr 2968 |     8     9    20 |     7     6    21 |    11    11    24 |
esa | esa 2976 |     8     9    16 |     5     7    26 |     8     9    21 |
gfz | gfz 2969 |     7     8    16 |     6     7    28 |     7     8    21 |
grg | grg 2880 |  ----  ----  ---- |  ----  ----  ---- |  ----  ----  ---- |
igr | igr 2976 |     7     8    15 |     5     7    28 |     8     9    19 |
igs | igs 2930 |     8     9    16 |     5     6    24 |     8     9    21 |
jpl | jpl 2968 |     8    10    23 |     5     7    25 |     8    10    21 |
mit | mit 2976 |    12    10    25 |     5    10    30 |     8     8    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 6.1749   GPS week: 1749   MJD: 56487.500-56493.500

                                                         AC LOD  AC LOD
CENT  FLAG  |   Xpole   Ypole     Xrt     Yrt    LOD |    BIAS  BIAS RMS
            |   [uas]   [uas]   [uas/d] [uas/d]  [us]|    [us]    [us]
------------+----------------------------------------+------------------
cod   uuuxu |     -21      -2     -11    -100      1 |       6     15
            |      23      18      76     260      9 |       3
emr   uuuuu |      73      23     -96      40      8 |      39     42
            |      20      24      97      37      8 |       4
esa   uuuuu |       8     -15      38      41      2 |       8     14
            |      19       7      45      84      5 |       1
gfz   uuuuu |       7       8      60    -115     -1 |       1     13
            |      18      31     147      63      5 |       1
grg   uuuux |       6      27     -52     -24      9 |       0     11
            |      18      19      71      95     13 |       5
igr   xxxxx |       4      -9      52     -12      2 |       0     12
            |      13      13      27      44      5 |       2
irf   xxxxx |       5      -2       4     -50     -1 |       1     12
            |       5       6      41      34      2 |       2
jpl   uuuuu |       8       9      38       6      5 |      14     19
            |      31      21     115      53      9 |       2
mit   uuuuu |     -12       7     -34    -108     -4 |      11     17
            |      10      17      70      61      4 |       1
ngs   uuuuu |     -43     -23      -8     132     -3 |       5     11
            |      54      42     162     107      7 |       2
sio   xxxxx |      92      31      42     186     -8 |      34     36
            |      34      46      51      45      5 |       2


Table 7.1749.0   GPS week: 1749   Day: 0   MJD: 56487.500

                                                         AC LOD  AC LOD
CENT  FLAG  |   Xpole   Ypole     Xrt     Yrt    LOD |    BIAS  BIAS RMS
            |   [uas]   [uas]   [uas/d] [uas/d]  [us]|    [us]    [us]
------------+----------------------------------------+------------------
cod   uuuxu |      18      -8     115     400      7 |       3     16
emr   uuuuu |      50      41    -125      39     19 |      32     36
esa   uuuuu |      47     -20     113     225     -2 |       7     15
gfz   uuuuu |      14      -1     102    -114     -1 |       1     14
grg   uuuux |      -1      42    -162    -196      6 |      -8     18
igr   xxxxx |      16      14      88       4      1 |      -2     13
irf   xxxxx |      13      -2      38     -32      2 |      -1     14
jpl   uuuuu |     -18       1    -106     -80     -5 |      11     17
mit   uuuuu |      -7      15      41    -133      5 |      10     18
ngs   uuuuu |     -94     -31    -127      64     -5 |       7     13
sio   xxxxx |      32     -13      74     139      2 |      35     37

Table 7.1749.1   GPS week: 1749   Day: 1   MJD: 56488.500

                                                         AC LOD  AC LOD
CENT  FLAG  |   Xpole   Ypole     Xrt     Yrt    LOD |    BIAS  BIAS RMS
            |   [uas]   [uas]   [uas/d] [uas/d]  [us]|    [us]    [us]
------------+----------------------------------------+------------------
cod   uuuxu |     -49      -7     -30    -208     10 |       4     16
emr   uuuuu |      49      55    -137     -32     10 |      35     39
esa   uuuuu |      -3      -2      -4      35      8 |       7     15
gfz   uuuuu |      40     -30     191     -23    -10 |       1     14
grg   uuuux |      -4       5     -15      57     16 |      -5     15
igr   xxxxx |      22     -11      71      16     -3 |      -1     13
irf   xxxxx |       6      -5      34     -18     -3 |       0     14
jpl   uuuuu |      -9      19     136      38     11 |      11     17
mit   uuuuu |      -7       6     -31     -62     -6 |      11     18
ngs   uuuuu |      10     -12    -126     -42     -7 |       6     12
sio   xxxxx |      71      92      26     181    -11 |      35     38

Table 7.1749.2   GPS week: 1749   Day: 2   MJD: 56489.500

                                                         AC LOD  AC LOD
CENT  FLAG  |   Xpole   Ypole     Xrt     Yrt    LOD |    BIAS  BIAS RMS
            |   [uas]   [uas]   [uas/d] [uas/d]  [us]|    [us]    [us]
------------+----------------------------------------+------------------
cod   uuuxu |     -30     -20    -111     -99      6 |       7     15
emr   uuuuu |      75      17    -270      29     15 |      40     42
esa   uuuuu |      10     -15      20      30      6 |       9     14
gfz   uuuuu |      -7     -13     218    -165      0 |       3     12
grg   uuuux |      -9       9      34      -4     13 |       0      6
igr   xxxxx |     -10     -25      58     -50      9 |       0     10
irf   xxxxx |       1       0      41     -29      0 |       2     12
jpl   uuuuu |     -13      10      50      71     18 |      14     18
mit   uuuuu |     -29       4      32     -51     -5 |      13     18
ngs   uuuuu |      19      37    -106      83    -15 |       7     12
sio   xxxxx |      90      60     111     202     -8 |      36     38

Table 7.1749.3   GPS week: 1749   Day: 3   MJD: 56490.500

                                                         AC LOD  AC LOD
CENT  FLAG  |   Xpole   Ypole     Xrt     Yrt    LOD |    BIAS  BIAS RMS
            |   [uas]   [uas]   [uas/d] [uas/d]  [us]|    [us]    [us]
------------+----------------------------------------+------------------
cod   uuuxu |     -28       0     -77      19      4 |       7     16
emr   uuuuu |      69      -3      24      70      3 |      42     44
esa   uuuuu |      -7     -21      57      16     -3 |       9     14
gfz   uuuuu |     -10     -14     174    -211     -3 |       3     12
grg   uuuux |      28      11     -36      59      9 |       3     10
igr   xxxxx |      14       0      59      53      8 |       1     11
irf   xxxxx |      -1       6     -22     -38      1 |       2     11
jpl   uuuuu |       7      22      64      27      3 |      15     19
mit   uuuuu |     -20      38    -100    -122     -1 |      12     16
ngs   uuuuu |       4       0     -99     140      2 |       5     10
sio   xxxxx |      90      73     -22     120     -6 |      34     36

Table 7.1749.4   GPS week: 1749   Day: 4   MJD: 56491.500

                                                         AC LOD  AC LOD
CENT  FLAG  |   Xpole   Ypole     Xrt     Yrt    LOD |    BIAS  BIAS RMS
            |   [uas]   [uas]   [uas/d] [uas/d]  [us]|    [us]    [us]
------------+----------------------------------------+------------------
cod   uuuxu |     -37      -2      50    -107      3 |       4     13
emr   uuuuu |      95      29     -70      47     -2 |      39     41
esa   uuuuu |      18     -19      71     -27     -4 |       6     13
gfz   uuuuu |       2      14     -46    -120      4 |      -1     11
grg   uuuux |      -7      41     -36    -106    -20 |       3     10
igr   xxxxx |      -3     -19      13     -26      3 |      -1     11
irf   xxxxx |       9      -2      32     -37     -3 |      -1     11
jpl   uuuuu |      64      42    -137     -19     -1 |      14     19
mit   uuuuu |      -7       3      27     -29     -8 |       9     15
ngs   uuuuu |    -116     -51     -30     275      1 |       2      7
sio   xxxxx |     137      26      72     249    -12 |      31     33

Table 7.1749.5   GPS week: 1749   Day: 5   MJD: 56492.500

                                                         AC LOD  AC LOD
CENT  FLAG  |   Xpole   Ypole     Xrt     Yrt    LOD |    BIAS  BIAS RMS
            |   [uas]   [uas]   [uas/d] [uas/d]  [us]|    [us]    [us]
------------+----------------------------------------+------------------
cod   uuuxu |      -2      35      -3    -317    -11 |      10     15
emr   uuuuu |     103      32     -88      50      6 |      43     45
esa   uuuuu |      -4     -11      27      23      8 |      10     14
gfz   uuuuu |      -4      43     -69    -115      3 |       2     13
grg   uuuux |      -2      50     -12     -18     18 |       4     10
igr   xxxxx |      -1     -16      56       0     -1 |       4     12
irf   xxxxx |      -1       0     -45     -92     -3 |       3     11
jpl   uuuuu |      35     -22     104      44     -5 |      17     22
mit   uuuuu |       0       4    -132    -167     -8 |      13     17
ngs   uuuuu |     -75     -94     149     191      3 |       5     11
sio   xxxxx |     120      10     -24     199    -11 |      34     35

Table 7.1749.6   GPS week: 1749   Day: 6   MJD: 56493.500

                                                         AC LOD  AC LOD
CENT  FLAG  |   Xpole   Ypole     Xrt     Yrt    LOD |    BIAS  BIAS RMS
            |   [uas]   [uas]   [uas/d] [uas/d]  [us]|    [us]    [us]
------------+----------------------------------------+------------------
cod   uuuxu |     -19     -14     -21    -387    -12 |       7     16
emr   uuuuu |      71     -12      -6      81      4 |      43     45
esa   uuuuu |      -2     -16     -17     -15      0 |       9     14
gfz   uuuuu |      13      53    -151     -56      0 |       1     13
grg   uuuux |      34      32    -138      40     17 |       5     10
igr   xxxxx |     -10      -6      17     -79      0 |       2     12
irf   xxxxx |       5     -13     -48    -105      1 |       1     12
jpl   uuuuu |     -11     -11     156     -35     11 |      15     21
mit   uuuuu |     -11     -20     -78    -189     -3 |      11     16
ngs   uuuuu |     -47      -8     286     215      3 |       3     10
sio   xxxxx |     103     -32      57     216     -9 |      31     33



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