[IGSREPORT-21931] Wk 1744 IGS Final Orbits

IGS ACC igs.acc at noaa.gov
Fri Jun 28 10:19:34 PDT 2013


Author:  AC Coordinator / NOAA NGS

sum-file Version 2.0
Final IGS Orbit Combination - Week 1744   (Jun 09, 2013 - Jun 15, 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:

igs1744[0-6].sp3  IGS GPS ephemeris files in SP3 format.
igs1744[0-6].clk  IGS GPS satellite and station clocks in clock RINEX format.
igs1744[0-6].cls  IGS GPS clock combination summary report.
igs17447.erp      Earth Rotation Parameters (ERP) and their rates as well as
                  Universal Time (UT1-UTC) and Length Of Day (LOD) associated 
                  with IGS ephemerides.
igs17447.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   | 26 26 KOUC MOBS FLRS KOUC MOBS XMIS
                0  |  ESA   | 26 26 IRKJ KOUC NANO IRKJ KOUC NANO RAMO
                0  |  GFZ   | 26 26
                0  |  GRG   | 13 13 ALIC DARW IRKJ MATE NTUS POL2 YIBL IRKJ NTUS
                0  |  MIT   | KOSG MDVJ DAV1 KOSG MDVJ YIBL
                1  |  COD   | 26 26 REYK XMIS REYK XMIS
                1  |  EMR   | HERS TLSE YELL HERS TLSE YELL
                1  |  ESA   | 26 26 IRKJ IRKJ UNSA
                1  |  GFZ   | 26 26 ALRT ALRT MDVJ NRIL
                1  |  GRG   | IRKJ NTUS REUN IRKJ RAMO REUN
                1  |  JPL   | YELL
                1  |  MIT   | MDVJ MDVJ
                2  |  COD   | 26 26 FLRS FLRS GOPE XMIS
                2  |  EMR   | WUHN WUHN
                2  |  ESA   | 26 26 IRKJ KOUC IRKJ KOUC UNSA
                2  |  GFZ   | 26 26 REUN
                2  |  GRG   | GOPE GUUG IRKJ LPGS PIMO SPT0 XMIS GOPE IRKJ LPGS
                2  |  GRG   | PIMO
                2  |  JPL   | RAMO
                2  |  MIT   | 7 16 7 16 MDVJ MDVJ
                3  |  COD   | 26 26 REUN REUN REYK
                3  |  EMR   | MATE
                3  |  ESA   | 26 26 NRMD NRMD UNSA
                3  |  GFZ   | 26 26 IRKJ KOSG MATE AUCK KOSG MATE
                3  |  GRG   | ARTU ASPA AUCK BOGT BRMU BRUX CHUR DARW DGAR FAA1
                3  |  GRG   | GLSV GOPE GUAT GUUG IRKJ ISPA KOUR MAC1 MAW1 MCIL
                3  |  GRG   | MDVJ NKLG NOVM NRIL NTUS PDEL PIMO POL2 REYK SCUB
                3  |  GRG   | SPT0 TOW2 XMIS FAA1 IRKJ NKLG NTUS
                3  |  MIT   | MDVJ
                4  |  COD   | CHUR CONZ FLRS KOUC REYK XMIS CONZ FLRS KOUC REYK
                4  |  COD   | XMIS
                4  |  EMR   | 26 WUHN WUHN
                4  |  ESA   | CHUR KOUC ABMF CHUR KOUC
                4  |  GFZ   | 26 26 MATE MATE
                4  |  GRG   | 26 26 ABMF BRAZ FAA1 IRKJ MCIL NOVM NTUS DUBO GUAM
                4  |  GRG   | IRKJ MCIL NOVM NTUS
                4  |  JPL   | RAMO
                4  |  MIT   | 10 13 16 23 26 10 23 CONZ MDVJ CONZ GOPE MDVJ
                5  |  COD   | KOUC KOUC
                5  |  EMR   | 26 26 WUHN WUHN
                5  |  ESA   | IRKJ KOUC IRKJ KOUC UNSA
                5  |  GFZ   | 26 26 MDVJ MDVJ
                5  |  GRG   | 26 26 CONZ GLSV IRKJ GLSV IRKJ
                5  |  MIT   | 26 26 MDVJ
                6  |  COD   | KOUC MOBS KOUC MOBS XMIS
                6  |  EMR   | 26 26 THTI
                6  |  ESA   | IRKJ KOUC ARTU IRKJ KOUC UNSA
                6  |  GFZ   | 26 26 NTUS NTUS
                6  |  GRG   | 26 26 IRKJ PDEL THTI WTZR XMIS ARTU IRKJ PDEL THTI
                6  |  MIT   | 5 6 16 23 26 5 6 16 23 26 MDVJ NTUS TWTF MDVJ NTUS
                6  |  MIT   | TWTF

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

 6. The following table lists all maneuvered satellites for this week. The
    solutions from COD and ESA, which modeled the maneuver, are used that day for
    combination, if available. An associated accuracy code of 0 (unknown) is given
    if only one AC is left (no redundancy). For the long arc evaluation the arc is
    split into two parts at the given maneuver epoch.
    
               PRN |    Date    | Ref. NANU
               ----+------------+----------
               G04 | 2013_06_12 | 2013033 

 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
               ----+--------+---------------
                6  |  MIT   |  26

 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 G27 |  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    -.6     -39      5    -13     .08
       EMR  |   0 |   -2.2   -4.8   10.7     -51    -24    -24     .23
       ESA  |   0 |     .4   -1.2    3.2      65    -34     21     .19
       GFZ  |   0 |    -.8     .4    -.4      -7    -29    -12    -.18
       GRG  |   0 |    5.1   -6.4   34.4     -28     31    -48     .41
       JPL  |   0 |    1.5   -6.6   13.0     -64      1   -121     .19
       MIT  |   0 |    2.7   -2.8   18.7      -6      4    -47     .24
       NGS  |   0 |   -1.8   -5.6   18.6     -78    -11    -23     .32
       SIO  |   0 |   -1.0   -3.0  -38.6    -116   -204   -113     .24

       COD  |   1 |     .2     .0    -.8     -31      3    -21     .24
       EMR  |   1 |    1.2   -4.3   11.2     -17      4    -34     .32
       ESA  |   1 |   -1.0   -3.2    1.9      51    -35     -4     .10
       GFZ  |   1 |    -.7     .1    -.5     -19    -22    -10    -.01
       GRG  |   1 |    8.6   -7.0   31.8     -25     27    -76     .68
       JPL  |   1 |   -2.2   -4.7   11.4     -86    -28    -13     .60
       MIT  |   1 |   -2.1   -4.0   17.0     -18     17    -58     .33
       NGS  |   1 |   -5.7   -6.1   18.4     -94     -9    -46     .53
       SIO  |   1 |    1.2   -2.2  -26.6     -76   -153     22     .47

       COD  |   2 |    -.2     .8    -.4     -29      8     -9     .12
       EMR  |   2 |    2.9    5.1    6.6     -15     14    -17     .05
       ESA  |   2 |   -1.0   -1.3    -.4      39     11    -44     .26
       GFZ  |   2 |    -.3    -.1    -.8     -19    -22     -8    -.17
       GRG  |   2 |    1.8    -.6   23.5     -30     15     -3     .39
       JPL  |   2 |   -1.7   -1.5   11.1     -43     14    -42     .35
       MIT  |   2 |   -1.3    1.4   19.2      -8     -3    -39     .27
       NGS  |   2 |    4.0   -8.7   24.3    -130    -45     -3     .57
       SIO  |   2 |     .8     .4  -38.5     -51   -192    -53     .05

       COD  |   3 |     .4    -.3    -.5     -27     17    -16     .13
       EMR  |   3 |     .2    -.5    5.1      -7     17    -29    -.03
       ESA  |   3 |     .6   -1.6    1.1      37    -14    -39     .18
       GFZ  |   3 |     .0    -.4    -.5     -14    -28     -5    -.15
       GRG  |   3 |    5.2   -9.9   30.3     -27     50    -28     .27
       JPL  |   3 |    3.4   -1.7    9.7     -38     44    -20     .33
       MIT  |   3 |     .7   -1.9   21.1      -7      3    -45     .05
       NGS  |   3 |    4.5   -7.3   18.9     -91    -48     -5     .34
       SIO  |   3 |    2.9   -3.3  -34.2     -87   -164   -122     .08

       COD  |   4 |    -.5     .1   -2.1     -12     48    -33     .20
       EMR  |   4 |    5.0    -.1   11.2     -45    -18    -34     .18
       ESA  |   4 |   -2.9   -3.3    2.1      44     14    -37     .25
       GFZ  |   4 |    -.5    -.4   -1.2      -1    -22    -19     .11
       GRG  |   4 |    3.4   -6.3   30.9       3     41     -9     .33
       JPL  |   4 |    4.9   -3.0   12.3     -39     53    -54     .38
       MIT  |   4 |    3.4     .9   16.7      -8      7    -49     .06
       NGS  |   4 |     .1  -11.7   12.2    -107      2    -15     .28
       SIO  |   4 |    2.5   -3.6  -10.7     -26    -84     16     .05

       COD  |   5 |    -.5     .5   -1.8     -29     33    -38     .24
       EMR  |   5 |    2.1     .8    7.4     -48    -17    -31     .20
       ESA  |   5 |     .6   -4.3    6.1      44      1    -32     .20
       GFZ  |   5 |   -1.0     .3    -.8     -15    -11    -25    -.08
       GRG  |   5 |    7.6   -2.4   29.9      -7     33    -47     .23
       JPL  |   5 |    2.7     .5   13.0     -50     42    -30     .05
       MIT  |   5 |    3.4    1.3   18.2      -8     15    -55     .04
       NGS  |   5 |    1.4   -9.0   13.1     -90     -9     -3     .29
       SIO  |   5 |    2.6   -2.0  -16.9     -35   -112    -44     .03

       COD  |   6 |    -.9     .5   -1.8     -33     25      2     .11
       EMR  |   6 |    5.3   -3.6    9.5     -48    -19    -29     .10
       ESA  |   6 |    6.0   -5.6     .1      36     -3    -37     .07
       GFZ  |   6 |    -.1     .3    -.4     -17    -19    -18    -.40
       GRG  |   6 |   10.4   -3.7   19.9     -38     33    -47     .30
       JPL  |   6 |   10.6   -2.9   14.5     -37     41    -47     .18
       MIT  |   6 |    6.0    -.9   17.7       1     -4    -43    -.02
       NGS  |   6 |    8.0   -3.6    7.7     -43    -30     38     .19
       SIO  |   6 |    6.2   -2.2  -13.1     -63   -135    -80    -.08


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 1.1744.a). It also displays the computed satellite
position sigmas for the combined orbits (Table 1.1744.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 2.1744.[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 3.1744.[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 5.1744.0-6). 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 1744 summary.                       (Jun 09, 2013 - Jun 15, 2013)

Table 1.1744.a   GPS week: 1744   MJD: 56452.000-56458.000

         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  271|   -1     1    -6    16     8     5  -.45   10   10 |   -1027    -308     18     86
        |    0     0     1    19    15     5   .02           |     292     498
emr   79|    1    -1    -1   -10   -42    21   .33   14   14 |    1679     672     15     91
        |    0     1     0    14    16     7   .01           |    1322     730
esa  150|    0     0     1     7    16   -15   .07    5    5 |      -1   -1464     14    116
        |    0     0     1    10    23     9   .03           |     653    1172
gfz  201|    0     0     0     9    -6    -3  -.46   10   10 |    -262     604     12     72
        |    0     0     1    41    46     9   .04           |     507     763
grg  138|    1     0    13     4    16     0   .61   15   14 |    -142     233     21    153
        |    0     0     3    17    24    20   .09           |     125     422
igr  n/a|    0     0    -3    11     4   -23  -.18    5    4 |    1940     336     14     73
        |    0     0     1    15    24    19   .04           |    1262     780
jpl   80|    0     0    -5    -6   -31   -29   .37   13   13 |    1257     670     14     98
        |    0     1     1    23     8     9   .01           |    1319     741
mit  236|    1     0     2     0     1     6  -.51   14   11 |     -76      74     23    217
        |    0     0     1    23    23    17   .02           |     139     382
ngs  243|    0     0     0   -48     0    18   .36   10    9 |   -1014    -384   1817   3464
        |    1     1     3    29    50    21   .02           |     317     540
sio  431|    0     0    -8  -105  -158   -62  -.18   19   18 |     ---     ---    ---    ---
        |    0     0     1    30    51    71   .07           |     ---     ---


Table 1.1744.b   GPS week : 1744   MJD: 56452.000-56458.000   

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



Table 2: Daily transformation of each centre to the combined IGS orbit and
         clocks for each day of the week. The transformation displayed is the
         result of the combination after the AC orbits were pre-aligned using
         the SINEX rotations from above. Prior to Wk 1702, AC ERP rotations
         used in the pre-alignment were also displayed.
         WRMS - RMS weighted by the centres SP3 header accuracy codes.
         STA  - Number of stations in the daily solutions.
   
Table 2.1744.0   GPS week: 1744   Day: 0   MJD: 56452.000                            

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     2    -6   -24    -1    12  -.44   10   10 |    -900    -157     18     70
emr   80|    0    -2     0    -3   -41    25   .33   13   13 |    1668     776     17     92
esa  150|    0     0     0     8     0   -13   .09    6    5 |    -617    -381     16    108
gfz  199|    0    -1     0    50   -17     1  -.47   10    9 |    -646    1124     13     76
grg  139|    0     1    16     5    22   -19   .53   15   14 |     -45     395     22    146
igr  n/a|    0     0    -2   -14    15   -25  -.15    4    4 |    3216     227     14     72
jpl   80|    1     3    -3   -26   -41   -47   .37   13   12 |    1416     642     15     99
mit  235|    0     0     3   -16     8    -9  -.53   12   11 |     -69     441     19    193
ngs  245|    1    -1     0   -38    54    36   .36   10    9 |    -921    -192   1949   3455
sio  432|    0     0    -6  -173  -221  -147  -.07   19   18 |     ---     ---    ---    ---

Table 2.1744.1   GPS week: 1744   Day: 1   MJD: 56453.000                            

CENT STA|   DX    DY    DZ    RX    RY    RZ   SCL  RMS  WRMS|    TOFT   TDRFT   SDEV    RMS
        |  [mm]  [mm]  [mm] [uas] [uas] [uas] [ppb] [mm] [mm]|    [ps]  [ps/d]   [ps]   [ps]
--------+----------------------------------------------------+------------------------------
cod  271|   -1     2    -8    24    19    -4  -.44   10   10 |    -938    -260     21     89
emr   79|    1    -3    -2     4   -18    34   .33   14   14 |    1853     147     18     70
esa  150|    0     0     0    -9    50   -21   .07    5    5 |    1118   -3312     12    100
gfz  199|    1     0     0    42   -84     9  -.50   10   10 |    -272     323     14     69
grg  139|    3     1    15    37     2     0   .57   16   14 |    -225     516     23    139
igr  n/a|    0     0    -1    13    44   -42  -.12    4    4 |    2738      86     14     70
jpl   80|    1    -1    -6   -15   -37   -25   .38   13   12 |    1422     291     15     95
mit  236|    0    -1     4     6   -42    15  -.51   13   12 |    -325     587     26    223
ngs  241|   -2     0     3   -70    20     8   .38   10    9 |    -959    -296   2119   3445
sio  427|    1     0    -8   -99  -190    15  -.14   21   19 |     ---     ---    ---    ---

Table 2.1744.2   GPS week: 1744   Day: 2   MJD: 56454.000                            

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|   -2     2    -6    18   -14     4  -.50    9    9 |    -750    -762     19    108
emr   80|    2     0    -2     3   -70    12   .33   14   14 |    1091    -331     15     94
esa  150|    0     0     0    19     6   -30   .01    4    4 |    -568    -831     18    122
gfz  198|    0     0    -1   -71    22   -10  -.53   11   11 |      66    -244     12     73
grg  138|    2     0    10    -1   -15    36   .69   14   13 |     -65     174     16    140
igr  n/a|    0     0    -1    29    24   -54  -.15    4    4 |    1930    -962     15     71
jpl   80|    0     0    -5    38   -41   -36   .36   13   13 |     930    -581     15     97
mit  236|    1    -1     3   -27    -3    24  -.51   14   12 |     106    -208     20    215
ngs  239|    0    -1     6   -23    70    28   .36    9    8 |    -772    -797   1801   3068
sio  430|    0     0    -8  -104  -205   -41  -.13   19   17 |     ---     ---    ---    ---

Table 2.1744.3   GPS week: 1744   Day: 3   MJD: 56455.000                            

CENT STA|   DX    DY    DZ    RX    RY    RZ   SCL  RMS  WRMS|    TOFT   TDRFT   SDEV    RMS
        |  [mm]  [mm]  [mm] [uas] [uas] [uas] [ppb] [mm] [mm]|    [ps]  [ps/d]   [ps]   [ps]
--------+----------------------------------------------------+------------------------------
cod  274|   -1     1    -6    31     0     6  -.45    9    9 |    -954    -688     20     93
emr   80|    2     0    -1    -8   -53    17   .32   15   15 |    -357    1747     15    109
esa  150|    0     0     1    -5     4   -16   .08    5    5 |     -94   -1337     13    113
gfz  200|    1    -1    -1    26    42   -15  -.42    9    9 |   -1087    1950     11     73
grg  141|    1     0    15   -12    38    -3   .76   15   15 |    -376     664     24    184
igr  n/a|    0     0    -4    24    -9   -22  -.17    5    4 |    -133    1392     15     73
jpl   80|    0     1    -6   -15   -23   -22   .37   14   13 |    -709    1679     15    104
mit  237|    1    -1     2    31    -4   -21  -.49   12   11 |    -142     -47     20    202
ngs  244|   -1    -1     0   -58    -5    48   .36   10    9 |   -1044    -559   1622   3593
sio  435|    0    -1    -8   -94  -170  -163  -.19   18   16 |     ---     ---    ---    ---

Table 2.1744.4   GPS week: 1744   Day: 4   MJD: 56456.000                            

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  270|    0     1    -7    32     3     6  -.44    9    9 |   -1241    -383     19     90
emr   79|    1    -3    -1   -12   -42    23   .35   14   14 |     954     851     14     91
esa  150|    0     0     1    14    47   -19   .06    5    5 |    -406    -657     15    120
gfz  204|    0    -1     0    -5   -41   -13  -.41    9    9 |    -390     686     12     72
grg  140|    1     1    13    10    20     4   .64   15   14 |     -66    -610     21    174
igr  n/a|    0     1    -3     4   -11    -9  -.19    6    5 |     547     795     15     73
jpl   80|    0    -1    -6    10   -24   -19   .37   13   13 |     126    1211     15    113
mit  237|    0     0     0    -9    -3     6  -.49   13   11 |      22    -534     29    260
ngs  246|    0     2     1   -89   -60    11   .36   12   10 |   -1195    -506   1893   3484
sio  425|    0     0    -8   -78   -89    15  -.22   20   19 |     ---     ---    ---    ---

Table 2.1744.5   GPS week: 1744   Day: 5   MJD: 56457.000                            

CENT STA|   DX    DY    DZ    RX    RY    RZ   SCL  RMS  WRMS|    TOFT   TDRFT   SDEV    RMS
        |  [mm]  [mm]  [mm] [uas] [uas] [uas] [ppb] [mm] [mm]|    [ps]  [ps/d]   [ps]   [ps]
--------+----------------------------------------------------+------------------------------
cod  276|   -1     1    -4    12    31     5  -.44   10   10 |   -1590     701     16     75
emr   79|    1    -2    -1   -25   -35    16   .32   14   14 |    2850     164     12     90
esa  150|    0     0     3    10    18    -2   .10    5    5 |     655   -2931     17    134
gfz  206|    0     0     0    -1   -10     4  -.44    9    9 |     440    -174     12     78
grg  136|    2     0    10     4    -5    13   .55   16   14 |    -181      70     18    139
igr  n/a|    0     0    -4    21   -15    -1  -.24    5    4 |    2450    -123     14     78
jpl   80|    0    -1    -6   -20   -22   -28   .40   13   12 |    2400     356     13     89
mit  234|    1     0     0    -9    32     5  -.52   13   10 |    -121      91     24    211
ngs  248|   -1     0     0    -1   -45   -17   .35   11    9 |   -1597     666   2025   3576
sio  435|    0     0   -10   -93  -108   -38  -.20   20   20 |     ---     ---    ---    ---

Table 2.1744.6   GPS week: 1744   Day: 6   MJD: 56458.000                            

CENT STA|   DX    DY    DZ    RX    RY    RZ   SCL  RMS  WRMS|    TOFT   TDRFT   SDEV    RMS
        |  [mm]  [mm]  [mm] [uas] [uas] [uas] [ppb] [mm] [mm]|    [ps]  [ps/d]   [ps]   [ps]
--------+----------------------------------------------------+------------------------------
cod  274|   -2     1    -4    18    21     2  -.45   10   10 |    -819    -612     18     78
emr   80|    1    -2    -2   -34   -33    20   .35   14   14 |    3696    1355     17     95
esa  150|    0     0     2    11    -8    -3   .07    5    4 |     -99    -801     13    115
gfz  206|    0     0     1    25    43    -2  -.46   10    9 |      51     569     14     67
grg  139|    1     0     8   -12    54   -25   .56   16   12 |     -40     426     25    149
igr  n/a|    0     0    -3     0   -19    -6  -.22    5    4 |    2837     937     15     75
jpl   80|    0     2    -5   -15   -29   -24   .38   13   13 |    3217    1093     15     94
mit  237|    1     0     1    33    21    27  -.55   18   11 |      -4     191     26    215
ngs  244|    0     0    -5   -59   -36    14   .33   11    9 |    -611   -1010   1316   3633
sio  435|   -1     0    -9   -97  -121   -74  -.28   21   19 |     ---     ---    ---    ---

       
       
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 3.1744.0   GPS week: 1744   Day: 0   MJD: 56452.000                            

        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    7    4    8   10    6   16    9   10   23    3 |    42   52   49   47   61   46   59   49   48   50    49
   2  |    9    8    5   14   13    4   10   11    8   20    3 |    21   22   22   28   26   20   24   26   22   23    21
   3  |   11   12    7    6   11    4   12   11    9   15    3 |    74   78   76   72   77   74   76   70   75   81    74
   4  |   23    8    5    7   12    4    8   12    8   16    4 |    16   14   14    9   17   16   17   15   12   16    14
   5  |   13   14    5    9   13    4   16   12    9   19    4 |    35   43   32   31   40   33   47   28   36   36    34
   6  |    9   11    6    8   11    4   10   12    7   16    3 |    16   22   18   18   22   15   23   16   17   21    16
   7  |   10   10    5    7   19    4   13   13    9   24    3 |    37   36   35   31   47   32   37   27   38   28    34
   8  |    7    7    5    8   13    3    8   10    7   18    3 |    24   28   26   27   24   26   27   28   25   32    25
   9  |    9    8    6    6   11    3    9   10    8   24    3 |    26   30   30   26   26   28   31   28   31   39    28
  10  |    8    6    3   10   12    3    7   11    8   12    3 |    16   23   19   16   27   18   24   23   19   25    18
  11  |    7   11    5    7   12    4   12   13   13   12    3 |    44   51   44   44   59   44   52   48   47   40    46
  12  |   14   29    8   15   18    6   21   11   13   16    6 |    56   56   58   57   59   55   58   52   60   51    56
  13E |    8   11    5    8   19    3   11   14    9    9    4 |    21   21   21   18   31   18   25   20   22   19    19
  14E |    8   11    6    9   15    4   10   13   10   14    3 |    23   26   23   22   27   22   24   22   26   26    22
  15E |    8   17    6    8   15    3   18   14    9   19    4 |    29   31   29   28   28   30   31   37   34   33    29
  16E |    9   17    6   16   26    5   15   14    9   15    5 |    26   30   31   37   44   30   31   32   30   32    29
  17  |    7   12    6   11   18    3   16    7   11   14    4 |    17   21   16   17   32   17   24   18   26   18    17
  18  |   10   18    5    9   19    4   18   10   10   24    4 |    22   32   23   26   36   24   30   24   30   22    23
  19  |    8   15    6   11   17    4   14   22   10   22    4 |    18   27   21   22   32   20   27   26   25   23    21
  20  |    8   12    5   12   11    5   12   12   11   18    4 |    22   27   23   27   32   25   28   25   24   20    23
  21  |    5   10    4    7   12    5   10   10   12   21    3 |    20   30   28   24   33   26   31   25   33   27    26
  22  |    9   14    6    9   16    3   14    8   12   23    4 |    26   30   26   31   40   27   29   26   31   25    26
  23E |   10   13    6   10   21    5   13   16    9   11    4 |    32   36   37   35   37   35   37   38   34   37    34
  24  |   14   12    5   11   16    4   12    8    8   14    4 |    20   25   23   18   32   20   31   19   28   21    21
  25  |    9   14    6    7   17    5   11   10   11   17    4 |    16   23   18   14   31   16   25   17   24   21    17
  26E |   14   16    8   12   14    4   14   17   10   31    4 |    58   50   52   58   42   53   52   59   50   44    52
 X27  |    8  ---  ---  ---  ---   48  ---  ---  ---  ---    0 |   151  ---  ---  ---  ---  150  ---  ---  ---  ---   153
  28E |    7   11    6   10   14    4    9    8    9   19    3 |    32   35   35   34   38   34   38   29   34   31    33
  29  |    8   18    6   10   12    4   18   14   11   28    4 |    16   25   16   17   23   17   27   17   20   29    16
 X30  |    8  ---  ---  ---  ---   42  ---  ---  ---  ---    0 |    41  ---  ---  ---  ---   28  ---  ---  ---  ---    41
  31  |   10   15    6    7   19    4   15    8    9   15    4 |    22   25   22   21   35   22   27   19   26   20    21
  32  |    8    9    4    7   11    3    8    9   13   12    3 |    22   28   22   22   28   22   30   19   25   27    23
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |   10   13    6   10   15    4   13   12   10   19      |T   32   32   29   29   36   32   34   29   31   30    33
 WRMS |   10   13    5    9   14    4   12   11    9   18      |NE  32   32   28   28   36   32   34   28   31   30    33
 MEDI |    9   12    6    9   14    4   12   11    9   17      |MD  23   28   23   26   32   26   30   26   28   27    25

Table 3.1744.1   GPS week: 1744   Day: 1   MJD: 56453.000                            

        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    8    4   11   11    5   15   11   12   17    3 |    22   31   28   26   38   26   37   30   27   33    26
   2  |    8   10    6   12   13    3   10   13    6   20    3 |    23   21   20   30   19   20   19   27   21   21    20
   3  |    8   15    6    9   24    6   16    9   12   51    4 |   117  121  116  118  115  116  120  118  120  134   117
   4  |   12    7    5   10   14    3   10   12    7   17    3 |    21   15   14   14   12   18   14   18   12   21    16
   5  |   14   17    6   10   15    7   16   13    7   18    4 |    23   31   24   25   29   22   31   27   27   29    24
   6  |    7   10    4    9   11    5   11   11   10   19    3 |    13   16   16   17   18   14   19   18   15   22    12
   7  |   10   12    5    9   19    5   12   10    8   21    3 |    26   33   28   33   35   27   34   32   31   33    28
   8  |    9    7    3   10   12    3    8   14    7   18    3 |    19   24   24   23   24   21   26   26   23   30    21
   9  |   10    8    4    8   10    5    9   19    7   27    3 |    19   23   24   22   23   20   23   28   25   36    21
  10  |    9    8    3   12   12    4    8   14    6   12    3 |    16   22   18   17   22   16   21   26   21   25    18
  11  |    7   12    4    8   12    3   10   12   12   13    3 |    24   34   27   26   40   26   35   32   27   27    27
  12  |   14   28    6   16   25    5   25   13   11   15    6 |    34   35   28   31   32   27   37   28   30   25    27
  13E |    8   12    4   10   11    3   12    9    8    8    3 |    17   24   20   23   27   19   23   23   23   20    20
  14E |    8   11    4    8   23    4   10   16   11   17    4 |    25   25   25   24   21   23   23   24   27   23    23
  15E |   10   17    7    8   14    3   17   23    9   17    4 |    33   33   37   33   30   33   31   38   37   36    33
  16  |   10   20    6   15   23    5   12   13   15   14    5 |    26   32   30   26   37   26   28   28   33   27    26
  17  |    7   13    5   10   17    3   15   11   10   15    4 |    19   23   17   18   27   16   22   22   23   24    17
  18  |   10   15    7    9   17    3   18    9    9   23    4 |    23   25   22   22   25   20   27   22   23   15    19
  19  |    7   16    4    9   15    2   14   19   10   22    4 |    17   26   20   15   28   17   25   21   20   19    17
  20  |   10   14    5   11   10    4   12   12   10   17    3 |    24   23   23   24   23   21   23   20   23   19    20
  21  |    7   11    6    7   13    4   12   10   11   21    3 |    18   19   26   19   21   20   19   20   24   17    19
  22  |    8   13    5    9   15    3   14   11   11   22    3 |    22   23   23   22   24   20   24   21   20   20    19
  23E |    9   14    4    9   15    3   13   12   11   10    3 |    29   38   34   30   34   32   34   37   36   34    32
  24  |   15   12    5    7   18    5   12   11   11   11    4 |    24   20   21   15   26   18   24   15   27   18    18
  25  |    9   16    5    6   21    4   13   11   10   24    4 |    18   19   21   13   28   15   22   18   20   16    16
  26E |   13   19    6   15   15    5   12   14   11   30    4 |    54   46   51   55   37   49   46   56   47   38    49
 X27  |    8  ---  ---  ---  ---   24  ---  ---  ---  ---    0 |   139  ---  ---  ---  ---  134  ---  ---  ---  ---   141
  28E |    9   11    4   11   17    3   11   16    9   18    3 |    42   44   44   44   42   42   45   48   46   46    43
  29  |   11   18    4   11   14    4   17   14   12   28    4 |    15   20   18   19   22   16   21   23   18   30    16
 X30  |    8  ---  ---  ---  ---   48  ---  ---  ---  ---    0 |    34  ---  ---  ---  ---   32  ---  ---  ---  ---    36
  31  |    8   14    6    6   21    4   15    9   13   15    4 |    17   23   20   17   33   19   22   16   24   19    17
  32  |    9    8    4    8   11    5    8   12   13   14    3 |    17   25   20   19   21   20   25   21   24   25    19
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |   10   14    5   10   16    4   13   13   10   21      |T   30   29   27   27   30   29   30   29   29   29    29
 WRMS |   10   14    5   10   14    4   12   12    9   19      |NE  29   28   26   25   29   28   29   27   27   28    29
 MEDI |    9   12    5    9   15    4   12   12   10   17      |MD  23   24   23   23   27   20   24   24   24   25    20

Table 3.1744.2   GPS week: 1744   Day: 2   MJD: 56454.000                            

        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    5   10   11    5   18    8    9   12    3 |    38   42   36   36   48   36   45   40   38   35    37
   2  |    7   10    3   17   11    5   10   17    7   21    3 |    26   24   20   34   23   24   26   27   24   21    21
   3  |    9   13    4   10   17    6   12   11    8   14    3 |    97   98   95   94   89   97   97   97  106   96    95
   4  |    8    8    3    9   12    4    8   15    9   19    3 |    18   17   13    8   17   15   18   14   15   17    14
   5  |   11   15    4    9   15    5   16   16   10   20    4 |    27   36   27   25   34   27   38   28   29   31    27
   6  |    8   10    3   11   11    5   10   12    6   14    3 |    21   25   18   19   22   19   24   20   22   20    17
   7  |    9   12    3   12   17    5   14    9   10   20    3 |    34   40   35   36   40   33   38   35   35   37    34
   8  |   10    8    3   11   13    3    9   17    8   19    3 |    19   27   20   23   23   19   25   24   24   28    20
   9  |    9    8    5    9   12    4   11   20    8   25    3 |    17   27   22   20   24   20   28   26   24   36    20
  10  |    8    7    3   12   11    4    8   16    5   16    3 |    18   24   17   18   25   19   24   24   20   23    18
  11  |    8   12    4   10   13    3   10   11    9   11    3 |    35   41   34   32   48   36   41   40   39   34    35
  12  |    8   26    6   17   18    5   24   13   10   13    5 |    28   36   25   27   33   24   36   25   30   24    25
  13E |    7   12    3   10   11    3   14   13    7    9    3 |    20   23   18   17   29   18   24   21   23   17    18
  14E |    7   14    5    9   15    3   11   15    8   17    3 |    25   28   22   23   24   21   24   19   23   20    21
  15E |    9   16    4   10   15    4   18   14    9    9    4 |    30   30   28   31   32   28   30   34   32   27    28
  16  |    8   22    4   15   17    5   16   14    9   16    4 |    21   34   24   27   34   25   29   25   31   23    24
  17  |    7   11    5   10   17    5   13   12   11   18    3 |    21   24   17   17   34   20   26   21   26   21    18
  18  |    7   15    5   13   13    3   17   10    8   24    3 |    23   29   21   27   28   22   27   22   28   21    21
  19  |    7   14    4   12   14    4   14   15   10   20    3 |    18   27   18   17   31   19   27   19   26   19    18
  20  |    8   14    4   13   11    6   13    9   10   17    3 |    24   29   22   25   29   26   28   25   26   21    23
  21  |    6    9    3    8   10    4   10   10    7   23    2 |    18   26   19   21   25   19   24   20   27   20    20
  22  |    8   13    4   12   13    3   13   10    8   22    3 |    26   29   23   28   32   27   28   23   32   25    24
  23E |    9   14    6   10   11    4   15   13   11   13    4 |    19   22   19   22   25   18   22   22   22   22    18
  24  |   12   13    5   10   16    4   11    9   10   10    3 |    24   26   22   21   29   19   30   21   25   23    21
  25  |   11   16    4   10   14    4   12   13   10   17    4 |    22   28   19   16   24   18   26   21   21   18    18
  26E |   15   19    6   12   16    5   14   14   10   29    4 |    56   50   50   55   45   52   49   58   47   41    50
 X27  |    9  ---  ---  ---  ---   39  ---  ---  ---  ---    0 |   110  ---  ---  ---  ---  101  ---  ---  ---  ---   112
  28  |   15   14    4   10   23    6   10   23    8   29    4 |    67   73   70   72   77   69   73   70   69   68    70
  29  |    8   16    5   11   14    4   18   17    9   27    4 |    25   28   17   17   28   19   29   21   20   30    19
 X30  |    8  ---  ---  ---  ---   52  ---  ---  ---  ---    0 |    58  ---  ---  ---  ---   34  ---  ---  ---  ---    58
  31  |    6   14    4    8   15    4   14    8    7   16    3 |    21   27   21   21   33   20   26   19   25   18    20
  32  |    9    9    3    8   12    3    7    9   10   12    3 |    21   27   17   17   24   19   25   19   24   23    19
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |    9   14    4   11   14    4   13   14    9   19      |T   32   33   26   28   33   30   32   29   31   28    30
 WRMS |    9   14    4   11   13    4   13   12    8   17      |NE  31   32   25   26   32   29   32   27   29   27    30
 MEDI |    8   13    4   10   13    4   13   13    9   17      |MD  24   28   21   23   29   21   27   23   26   23    21

Table 3.1744.3   GPS week: 1744   Day: 3   MJD: 56455.000                            

        Weighted Average                                            Orbit Dynamics (7 days)
 PRN  |  cod  emr  esa  gfz  grg  igr  jpl  mit  ngs  sio  IGS |   cod  emr  esa  gfz  grg  igr  jpl  mit  ngs  sio   IGS
------+--------------------------------------------------------+---------------------------------------------------------
   1  |    9    9    5    8    9    2   16    9   13   13    3 |    33   41   38   35   47   34   44   38   38   29    37
   2  |    5   11    7   15   11    3   10   15    7   22    3 |    17   19   16   25   19   16   17   23   15   15    15
   3  |   10   13    5    6   14    5   15    8   14   14    3 |    73   74   76   71   79   73   76   71   72   82    73
  X4  |    8  ---  ---  ---  ---   55  ---  ---  ---  ---    0 |   136  ---  ---  ---  ---   80  ---  ---  ---  ---   135
   5  |   15   17    5   11   13    5   15   16   10   19    4 |    35   37   27   23   32   28   38   27   29   33    28
   6  |    9   12    5    7   13    7   11    9    8   15    3 |    16   18   14   11   22   12   17   16   15   17    12
   7  |    8   12    5    7   14    5   13    9    7   20    3 |    25   26   23   19   34   19   24   18   24   20    21
   8  |    7    9    4    7   12    4    9   11    7   19    3 |    18   24   19   16   21   20   25   22   22   27    18
   9  |    8   11    7    7   11    3   10   13    9   27    3 |    17   26   21   13   24   21   27   22   26   35    19
  10  |    7    9    5    7   13    3    9   12    7   16    3 |    12   19   14   12   25   11   15   16   18   20    13
  11  |    7   11    4    8   12    3   11   11   10   13    3 |    34   39   36   30   49   31   39   38   34   30    34
  12  |   14   30    7   15   19    5   23   12   11   12    6 |    27   33   17   21   30   18   25   19   26   16    18
  13E |    9   11    4    7   15    3   13   13    8   11    3 |    21   24   21   16   30   17   23   17   22   18    18
  14E |    7   13    5    8   20    5   11   12   10   15    4 |    17   19   17   15   25   16   18   16   23   20    16
  15E |    7   15    4   12   17    5   18    9   14   10    4 |    28   32   28   25   30   28   29   32   36   31    28
  16  |    8   21    5   13   14    5   16   11   10   15    4 |    18   24   20   22   28   19   22   17   24   17    18
  17  |    7   13    5    9   19    5   15   13   11   18    4 |    15   20   13   14   33   14   20   16   21   16    12
  18  |    8   17    7    9   15    5   17    9   10   22    4 |    18   24   21   20   33   19   25   19   21   19    19
  19  |    8   14    6    7   16    5   14   12   10   18    4 |    13   21   15   12   29   12   21   14   17   14    13
  20  |    6   14    5    9   11    4   14   10    7   19    3 |    21   24   19   20   28   20   23   20   17   14    18
  21  |    9   11    5    8   16    5   12   10   12   20    3 |    17   20   20   16   25   16   19   16   17   17    16
  22  |    8   15    5    9   16    5   14   10   10   21    4 |    25   27   27   25   38   24   27   21   26   22    24
  23E |   10   16    5    8   18    4   16   18   10   12    4 |    34   36   33   35   35   32   36   34   36   36    32
  24  |   12   14    5   12   16    6   12   10    9    9    4 |    18   25   19   12   28   16   27   16   22   17    17
  25  |   10   15    4    8   15    5   14   10    6   19    3 |    13   22   13    9   25   10   21   13   17   16    11
  26E |   14   21    7   10   13    8   17   19   11   31    5 |    57   53   50   55   46   53   51   59   49   41    51
 X27  |    8  ---  ---  ---  ---   24  ---  ---  ---  ---    0 |   150  ---  ---  ---  ---  154  ---  ---  ---  ---   152
  28  |    9   11    4    6   12    5   10   12    7   21    3 |    36   42   37   35   44   38   42   39   38   37    37
  29  |    9   18    5   12   16    5   18   13    9   26    4 |    15   20    9   14   21   10   23   16   13   26    10
 X30  |    8  ---  ---  ---  ---   27  ---  ---  ---  ---    0 |    25  ---  ---  ---  ---   19  ---  ---  ---  ---    26
  31  |    8   16    6    9   13    4   13    9   16   15    4 |    15   22   18   18   31   16   22   15   28   17    17
  32  |    7    9    4    7   12    4   10   11    9   16    3 |    16   20   15   11   23   12   21   10   18   18    13
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |    9   15    5    9   15    5   14   12   10   18      |T   31   28   24   22   32   28   28   24   26   24    30
 WRMS |    9   15    5    9   15    4   13   11    9   16      |NE  32   27   22   20   31   28   27   22   24   23    30
 MEDI |    8   13    5    8   14    5   14   11   10   18      |MD  18   24   20   19   30   19   24   19   23   20    18

Table 3.1744.4   GPS week: 1744   Day: 4   MJD: 56456.000                            

        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    8   11    6   17   10   15   17    4 |    30   41   36   34   47   34   43   36   36   29    35
   2  |    7   13    7   15   13    4   12   20    9   23    4 |    24   19   16   33   16   20   19   30   20   24    19
   3  |   10   10    4    6   12    7   13    8   17   16    3 |    39   40   38   36   38   39   40   35   43   41    37
   4  |    8   10    5   11   12    5   10   17    9   24    3 |    21   13    9   10   10   14   13   15   13   21    21
   5  |   11   16    5   11   13    7   15   19    7   21    4 |    29   37   29   27   30   26   37   30   30   32    28
   6  |    9   12    3    8   10    7   11   10   11   16    3 |    17   21   15   13   16   14   17   19   19   18    14
   7  |    9   12    4    8   16    4   13   10   12   24    3 |    26   28   24   23   32   23   27   26   28   30    23
   8  |    8    8    3    4   12    4    9   12    9   20    2 |    17   20   16   18   18   15   21   20   22   26    16
   9  |    7   10    4    6   12    4    9   12    9   28    3 |    19   22   20   16   21   17   24   20   24   35    18
  10  |    7    7    4    6   11    5    8   13    7   16    3 |    13   20   15   17   23   16   19   21   17   24    15
  11  |    8   13    4    8   14    6   11   11   12   15    3 |    27   39   32   30   45   33   37   32   36   31    32
  12  |    9   25    5   13   20    7   20   12   13   15    5 |    24   31   20   23   30   18   28   17   26   17    19
  13E |    7   12    3    6   13    4   14   13    9   10    3 |    15   18   14   14   21   12   17   17   18   16    13
  14E |    8   11    4    8   14    5    9   10   14   16    3 |    17   19   17   17   19   17   19   19   24   21    17
  15E |    6   19    4   10   21    7   18    9   13   12    4 |    23   25   20   25   27   20   24   26   26   27    21
  16  |    9   19    5   13   17    9   16   11   17   18    4 |    20   26   19   21   24   21   22   20   30   23    19
  17  |    9   14    4    9   17    3   17   13   13   18    4 |    18   22   16   21   29   17   25   25   24   26    17
  18  |    7   14    6    9   15    4   16   10    8   22    3 |    21   26   21   24   27   20   26   22   24   19    20
  19  |    8   13    4    8   16    8   12   10   14   20    3 |    13   21   16   14   27   15   20   16   25   17    15
  20  |    9   13    4   12    8    6   13   11    9   18    3 |    18   24   23   25   28   23   25   25   24   21    22
  21  |    5    9    4    6   14    4   13   11   11   22    3 |    18   21   18   17   23   15   20   20   21   17    17
  22  |    9   13    4    7   15    5   13   11   13   22    3 |    27   27   25   27   31   25   26   25   29   24    25
  23E |    9   14    5    7   18    4   13   18    9   13    4 |    29   37   34   31   37   31   35   36   34   31    32
  24  |   10   11    4   11   13    6   13   10    8   13    3 |    18   21   16   19   26   13   26   16   20   16    16
  25  |   10   14    6    8   12    4   14   12    9   17    3 |    23   25   20   20   27   18   25   22   21   21    19
  26E |   11   20    9   14   13   10   15   31   18   37    6 |    57   51   51   57   44   52   50   62   49   40    50
 X27  |    8  ---  ---  ---  ---   40  ---  ---  ---  ---    0 |   122  ---  ---  ---  ---  118  ---  ---  ---  ---   124
  28  |    6   10    3    7   20    4    9   13   10   23    3 |    26   30   27   25   39   26   31   28   31   28    26
  29  |   15   16    5   12   16    4   18   11   12   26    4 |    19   20   14   18   20   13   23   21   16   29    14
 X30  |    8  ---  ---  ---  ---   88  ---  ---  ---  ---    0 |    77  ---  ---  ---  ---   25  ---  ---  ---  ---    75
  31  |   11   15    5    9   20    4   10    7   13   16    4 |    21   22   17   16   31   16   22   16   21   17    16
  32  |    9    8    4    6   11    4    6   12   11   14    3 |    15   22   18   15   21   16   21   17   21   22    16
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |    9   14    5    9   15    6   13   13   12   20      |T   27   26   21   22   27   24   26   24   25   24    26
 WRMS |    9   14    5    9   14    5   13   11   10   19      |NE  27   25   20   21   26   24   25   22   24   24    26
 MEDI |    9   13    4    8   13    5   13   11   11   18      |MD  21   22   19   21   27   18   24   21   24   24    19

Table 3.1744.5   GPS week: 1744   Day: 5   MJD: 56457.000                            

        Weighted Average                                            Orbit Dynamics (7 days)
 PRN  |  cod  emr  esa  gfz  grg  igr  jpl  mit  ngs  sio  IGS |   cod  emr  esa  gfz  grg  igr  jpl  mit  ngs  sio   IGS
------+--------------------------------------------------------+---------------------------------------------------------
   1  |    9    8    5    9    9    5   16   10   11   23    3 |    26   36   33   27   39   25   42   26   31   21    30
   2  |    5   11    7   14   12    5   11   16    7   22    4 |    19   16   19   29   15   18   15   24   21   20    17
   3  |   12   12    5    9   14    5   13    8   13   13    3 |    47   48   48   48   47   45   48   47   46   48    46
   4  |    8    8    5    8   11    6    8   12    9   24    3 |    19   10   10   13   10   16   11   16   15   22    18
   5  |   11   14    5    7   12    5   16   20    9   26    4 |    22   29   22   21   29   21   31   26   25   31    22
   6  |   10   11    4   10   10    4    9    7   11   12    3 |    14   17   12   12   13   11   17   15   17   13    11
   7  |    7   11    4   10   20    6   12    9    6   24    3 |    14   20   13   15   26   13   18   14   19   24    12
   8  |   10    7    4    8   14    3    7   12    6   20    3 |    11   15   13   13   18   12   18   14   19   23    11
   9  |    8    7    6    7   13    3    9   13    7   26    3 |    10   17   14   12   20   13   19   15   20   32    12
  10  |    9    7    4    4   13    4    8   11    9   14    3 |    11   19   16   13   21   13   21   18   19   20    15
  11  |    7   11    4    7   12    4   10   11   12   15    3 |    24   31   26   24   36   22   30   21   24   19    24
  12  |   10   26    7   13   23    5   21   12   13   15    5 |    17   27   17   18   29   14   24   16   21   16    14
  13E |    8   11    4    9   17    3   11   14    9   12    3 |    10   16   13   12   21   11   16   17   19   14    11
  14E |    8   12    5    7   16    5    9   13   11   18    3 |    13   15   11   11   12   10   12   15   15   18     9
  15E |   10   14    5    8   18    5   18   10   15   14    4 |    19   21   20   21   23   19   23   25   21   27    18
  16  |   11   22    5   13   18    6   15   12   10   17    4 |    16   25   17   17   28   17   19   17   23   18    15
  17  |    7   13    6    6   19    3   18    9   10   17    4 |    14   21   18   15   28   16   21   18   23   23    15
  18  |    9   15    6    9   16    4   16    9   12   22    4 |    17   22   16   17   20   13   22   16   19   12    14
  19  |    6   13    4   11   16    3   13   11    9   20    3 |    10   21   13   13   24   10   20   13   18   12    12
  20  |   10   13    5   10    9    4   12   11   11   19    3 |    15   23   18   19   22   17   23   20   18   16    17
  21  |    6   10    4    8   11    5   13    9   13   22    3 |    17   19   18   17   16   13   18   18   22   16    16
  22  |   10   15    5    9   18    5   14    7   14   20    4 |    20   22   19   21   25   17   23   19   20   18    17
  23E |    8   11    3   10   17    6   11   11    7   11    3 |    35   38   36   34   37   34   36   38   37   34    35
  24  |   13   12    5    8   18    5   12    7   12   11    4 |    18   18   17   13   29   12   23   11   20   14    14
  25  |    7   16    5    7   18    4   13   14   12   16    4 |    16   23   17   17   26   15   24   22   22   17    16
  26E |   15   27   11   12   14    7   16   38   19   37    7 |    55   48   46   53   40   50   44   62   48   40    47
 X27  |    7  ---  ---  ---  ---   31  ---  ---  ---  ---    0 |   113  ---  ---  ---  ---  107  ---  ---  ---  ---   116
  28  |    9   11    4    7   24    5   10    8    6   17    3 |    21   28   27   23   42   26   29   23   31   24    25
  29  |   10   18    5    8   14    4   17   11   11   27    4 |    17   21   13   15   19   12   23   19   14   25    13
 X30  |    7  ---  ---  ---  ---   88  ---  ---  ---  ---    0 |    71  ---  ---  ---  ---   13  ---  ---  ---  ---    71
  31  |   11   14    5    7   23    4   10    8   14   18    4 |    16   21   14   12   34   13   21   13   21   14    14
  32  |   10    9    4    6   11    4    7   11    9   15    3 |    13   21   16   10   19   13   21   16   23   21    14
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |   10   14    5    9   16    5   13   13   11   20      |T   23   23   19   19   25   20   23   21   23   21    23
 WRMS |   10   14    5    9   14    4   12   10    9   20      |NE  23   22   18   18   24   19   23   19   21   20    23
 MEDI |    9   12    5    8   14    5   12   11   11   18      |MD  17   21   17   17   24   14   21   18   21   20    15

Table 3.1744.6   GPS week: 1744   Day: 6   MJD: 56458.000                            

        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    9    3    8    7    4   16   10   10   22    3 |    39   50   44   44   54   42   51   45   46   35    44
   2  |    9   12    6   18   11    4   12   17    9   22    4 |    16   18   17   32   16   15   16   25   17   18    15
   3  |   10   11    5    7   13    7   12    9   13   14    3 |    38   39   37   41   35   35   41   41   37   41    37
   4  |    7    9    4   11    8    4   11   13   10   24    3 |    18   11    8   12    8   11   11   11   10   21    17
   5  |   17   17    5    9   13    6   19   24    9   26    5 |    38   42   33   30   35   32   45   33   35   40    33
   6  |    9   12    4    8   22    5   11    9   10   13    3 |    12   16   10   11   26   10   18   12   15   14     9
   7  |   10   12    4   10   21    6   14   10    8   25    3 |    20   21   17   19   32   13   19   14   19   21    15
   8  |   11    9    4   12   13    4   10   10    8   20    3 |    11   17   15   15   20   14   17   14   17   23    13
   9  |    7   10    4   13   13    4   10   13   11   28    3 |    13   19   18   17   20   16   19   19   20   32    16
  10  |    9    7    3   10   12    5   10   15    9   17    3 |    13   19   18   19   22   13   19   22   18   23    16
  11  |    9   11    3    9   11    4   11   10    8   13    3 |    37   46   40   40   52   40   43   40   39   33    40
  12  |   11   23    4   13   23    4   21   13   11   16    5 |    26   27   18   22   30   19   25   19   26   17    18
  13E |   11   14    4    8   17    3   12   19    9   14    4 |    14   15   12   11   19    8   16   18   16   13    10
  14E |   11   11    3    7   14    4   10   14   10   23    3 |    17   16   13   18   14   14   17   17   18   23    12
  15E |    9   16    5   10   24    4   18   18   12   15    4 |    24   23   21   24   29   23   24   32   31   29    22
  16  |   11   23    5   11   21    5   14   15   11   17    4 |    12   25   17   18   30   16   20   15   24   19    15
  17  |    8   11    4    9   17    4   15   12    9   18    3 |    10   19   13   12   29   10   21   12   18   17    12
  18  |    7   17    5    7   15    4   16    8    9   21    3 |    15   26   22   22   30   19   27   19   23   16    19
  19  |    9   12    4   10   15    5   12   11   12   18    3 |    11   19   14   15   25   12   19    9   22   11    12
  20  |    8   12    4   11   10    4   12   11    8   19    3 |    22   27   26   30   29   26   25   27   22   21    25
  21  |    5   11    4    6   12    2   11   10   14   23    3 |    14   23   21   17   25   17   23   21   23   20    18
  22  |   10   14    4    7   14    4   13    8    8   21    3 |    25   29   28   27   36   26   29   27   26   25    26
  23E |   10   16    4   10   10    4   13   11    7   13    3 |    32   39   36   37   37   36   38   38   39   40    36
  24  |   14   13    5    9   20    4   12   10   12   12    4 |    14   19   15   14   29   11   22   11   20   14    13
  25  |    8   15    6    6   17    3   12   14   12   15    4 |    14   24   19   14   31   12   23   10   23   15    16
  26E |   17   19   11   15   15   11   17   68   27   41    6 |    60   52   55   60   46   56   51   81   55   47    54
 X27  |    7  ---  ---  ---  ---   38  ---  ---  ---  ---    0 |   132  ---  ---  ---  ---  124  ---  ---  ---  ---   134
  28  |    7   11    3   13   24    4   10    8    8   20    3 |    24   31   27   30   42   28   30   27   33   30    27
  29  |   16   15    4    7   14    2   18   11   10   27    4 |    16   21   12   15   21   14   26   15   19   28    13
 X30  |    7  ---  ---  ---  ---   35  ---  ---  ---  ---    0 |    38  ---  ---  ---  ---   24  ---  ---  ---  ---    38
  31  |   10   13    4    8   23    4   12   15   10   16    4 |    11   21   14   13   35   12   20   17   19   16    13
  32  |    8    8    4    6   11    3    7   12   10   16    3 |    13   19   16   14   20   13   19   14   19   20    14
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |   10   14    5   10   16    5   13   18   11   21      |T   24   25   21   23   29   23   25   23   24   24    25
 WRMS |   10   14    4    9   12    4   13   11    9   19      |NE  24   24   20   21   28   23   25   20   23   22    25
 MEDI |    9   12    4    9   14    4   12   11   10   18      |MD  16   21   18   18   29   16   22   19   22   21    16



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 4.1744   GPS week: 1744   MJD: 56452.0-56458.0

CENT| CLK EPO  |        BRUX       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3023 |U    7     8    17 |U    6    10    26 |U    8     7    16 |
emr | emr 2862 |    10     8    22 |U    9    16    33 |     9     8    20 |
esa | esa 2866 |     7     8    21 |U    5     8    21 |     8     7    16 |
gfz | gfz 2862 |U    7     8    21 |U    7    20    39 |U    8     7    16 |
grg | grg 2866 |U   11    13    33 |U   11    23    47 |    13    11    26 |
igr | igr 2866 |     7     8    21 |     5     8    22 |     7     7    16 |
igs | igs 2855 |     7     7    20 |     6    16    29 |     8     7    16 |
jpl | jpl 2862 |     8     8    23 |     7    19    37 |     9     8    19 |
mit | mit 2866 |     8     8    21 |U    6    17    31 |U    9     9    20 |



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

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

Table 5.1744.0   GPS week: 1744   Day: 0   MJD: 56452.0

CENT| CLK EPO  |        BRUX       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3047 |    11     8    19 |     4     8    29 |     9     7    12 |
emr | emr 2876 |    14    11    30 |     9    17    30 |    11     9    16 |
esa | esa 2880 |    11     8    27 |     4     6    23 |    10     7    13 |
gfz | gfz 2876 |    11     8    27 |     5    10    32 |    10     6    13 |
grg | grg 2880 |    13    13    36 |    13    19    48 |    16    12    27 |
igr | igr 2880 |    12     9    27 |     5     6    25 |     9     7    13 |
igs | igs 2878 |    11     9    27 |     5    18    31 |    10     7    13 |
jpl | jpl 2876 |    12     9    31 |     6    21    33 |    11     8    14 |
mit | mit 2880 |    11     9    27 |     5    17    28 |    11     9    21 |

Table 5.1744.1   GPS week: 1744   Day: 1   MJD: 56453.0

CENT| CLK EPO  |        BRUX       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3031 |     6     6    11 |     7     8    28 |     8     7    21 |
emr | emr 2876 |     7     6    15 |     9    17    24 |     9     7    25 |
esa | esa 2880 |     4     3    13 |     4     5    18 |     7     6    19 |
gfz | gfz 2876 |     3     4    13 |     5    16    44 |     7     5    18 |
grg | grg 2880 |    11    10    35 |    10    22    39 |    13    10    26 |
igr | igr 2880 |     3     3    13 |     4     5    20 |     7     6    19 |
igs | igs 2878 |     3     3    12 |     6    22    30 |     7     6    20 |
jpl | jpl 2876 |     5     4    15 |     6    26    33 |     8     8    24 |
mit | mit 2880 |     4     5    12 |     4    18    27 |     8     8    20 |

Table 5.1744.2   GPS week: 1744   Day: 2   MJD: 56454.0

CENT| CLK EPO  |        BRUX       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3039 |     6    10    17 |     6    10    29 |     5     5    15 |
emr | emr 2876 |    10     8    25 |    10    13    35 |     8     7    22 |
esa | esa 2880 |     7     9    24 |     6     7    29 |     6     5    18 |
gfz | gfz 2877 |     7     9    23 |     6    23    45 |     7     5    17 |
grg | grg 2880 |    10    17    29 |     9    16    35 |    13    11    30 |
igr | igr 2880 |     7    10    24 |     6     6    29 |     6     5    16 |
igs | igs 2878 |     7     8    23 |     6    15    35 |     6     6    18 |
jpl | jpl 2876 |     8    10    29 |     6    18    34 |     7     6    21 |
mit | mit 2880 |    15    13    33 |     6    16    36 |     9     7    20 |

Table 5.1744.3   GPS week: 1744   Day: 3   MJD: 56455.0

CENT| CLK EPO  |        BRUX       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 2950 |     5     8    15 |     6    11    20 |     9     8    18 |
emr | emr 2780 |     8     7    16 |    12    18    37 |    11     8    19 |
esa | esa 2784 |     6     8    19 |     6    10    17 |    10     7    17 |
gfz | gfz 2780 |     6     8    17 |     8    25    41 |    10     7    17 |
grg | grg 2783 |     7     9    21 |    14    21    42 |    13     9    22 |
igr | igr 2784 |     5     9    18 |     6    10    15 |     9     7    19 |
igs | igs 2782 |     6     7    16 |     8    18    36 |    10     7    16 |
jpl | jpl 2780 |     7     8    19 |     9    19    47 |    10     8    19 |
mit | mit 2784 |     5     8    16 |     8    20    39 |    10     8    18 |

Table 5.1744.4   GPS week: 1744   Day: 4   MJD: 56456.0

CENT| CLK EPO  |        BRUX       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3029 |     8    10    25 |     5     8    22 |     6     8    17 |
emr | emr 2876 |    12    14    30 |     8    15    29 |     9    11    22 |
esa | esa 2880 |    11    12    31 |     4     7    17 |     6     9    17 |
gfz | gfz 2876 |    11    12    33 |     7    19    42 |     8    11    17 |
grg | grg 2880 |    15    20    49 |    10    34    70 |    10    11    30 |
igr | igr 2880 |    11    12    30 |     5     8    18 |     6    10    18 |
igs | igs 2880 |    11    12    30 |     6    18    28 |     6     9    17 |
jpl | jpl 2876 |    11    13    27 |     6    18    33 |     7    11    21 |
mit | mit 2880 |     9    10    30 |     6    17    30 |     8    11    25 |

Table 5.1744.5   GPS week: 1744   Day: 5   MJD: 56457.0

CENT| CLK EPO  |        BRUX       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3039 |     6     6    16 |     6    12    26 |     7     6    10 |
emr | emr 2876 |     8     6    17 |    10    14    37 |     7     7    14 |
esa | esa 2880 |     5     5    15 |     7    11    23 |     7     7    12 |
gfz | gfz 2876 |     6     5    16 |     7    25    37 |     8     6    11 |
grg | grg 2880 |     8    13    30 |    11    27    60 |    13    16    26 |
igr | igr 2880 |     5     5    16 |     6    10    24 |     7     6    11 |
igs | igs 2840 |     5     5    14 |     7    10    22 |     7     7    12 |
jpl | jpl 2876 |     7     6    18 |     7    16    36 |     7     5    14 |
mit | mit 2880 |     5     7    14 |     7    16    25 |    10    11    14 |

Table 5.1744.6   GPS week: 1744   Day: 6   MJD: 56458.0

CENT| CLK EPO  |        BRUX       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3032 |     7     8    15 |     7    11    27 |     8     6    18 |
emr | emr 2876 |    10     9    20 |     9    17    36 |     9     8    23 |
esa | esa 2880 |     9     8    20 |     6    10    21 |     8     6    18 |
gfz | gfz 2876 |     9     8    18 |     8    23    35 |     8     7    17 |
grg | grg 2879 |    10    12    34 |    10    21    36 |    11     8    22 |
igr | igr 2879 |     9     8    20 |     6    10    21 |     9     7    18 |
igs | igs 2849 |     9     7    18 |     7     9    22 |     9     7    18 |
jpl | jpl 2874 |     9     7    21 |     9    19    44 |     9     7    24 |
mit | mit 2880 |     8     6    16 |     8    16    30 |     9     7    20 |


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 6.1744   GPS week: 1744   MJD: 56452.500-56458.500

                                                         AC LOD  AC LOD
CENT  FLAG  |   Xpole   Ypole     Xrt     Yrt    LOD |    BIAS  BIAS RMS
            |   [uas]   [uas]   [uas/d] [uas/d]  [us]|    [us]    [us]
------------+----------------------------------------+------------------
cod   uuuuu |     -31     -24     -52     -74     -3 |       6     21
            |      10      13      57      88      3 |       4
emr   uuuuu |      40      30     -47      39     -3 |      26     34
            |      14      19      59      88      7 |       4
esa   uuuuu |      -9     -11      28     -13     -6 |      16     25
            |      14      10      32      69      4 |       3
gfz   uuuuu |       9       7      55     -29      2 |       9     21
            |      19      10      37      57      2 |       3
grg   uuuux |       7     -27      99    -163     -9 |      -1     31
            |      29      19      40      79     40 |       8
igr   xxxxx |      -3      -5      53      22      2 |       3     20
            |      28      12      45      61      5 |       4
irf   xxxxx |       6       5     -43     -12      4 |       4     20
            |      15       7      21      36      3 |       3
jpl   uuuuu |      47     -15      64     124     -8 |      31     38
            |      22      25      84      61      7 |       5
mit   uuuuu |       8       4    -191      65     10 |      18     27
            |      31      18      57      74      4 |       4
ngs   uuuuu |     -26      47      11      44      2 |      12     20
            |      52      27     108     102      5 |       3
sio   xxxxx |     155     123    -122     145      8 |      33     38
            |      62      38     100      48      4 |       3


Table 7.1744.0   GPS week: 1744   Day: 0   MJD: 56452.500

                                                         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 |     -42      -2     -58    -199      3 |       3     20
emr   uuuuu |      40      13      35     150     -5 |      28     35
esa   uuuuu |     -14     -16       0     -85     -3 |      15     24
gfz   uuuuu |      33      -1      26     -13      2 |       6     20
grg   uuuux |       9     -20     116     -84    -20 |     -11     42
igr   xxxxx |     -21       5      61      71      8 |      -2     19
irf   xxxxx |      18       8     -57      58      9 |       0     17
jpl   uuuuu |      65      18     150      68     -3 |      32     39
mit   uuuuu |      35      18    -194     216     12 |      12     21
ngs   uuuuu |     -82       7     -12      83     -7 |       8     17
sio   xxxxx |     228     194    -179     219      9 |      28     33

Table 7.1744.1   GPS week: 1744   Day: 1   MJD: 56453.500

                                                         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 |     -26     -43      45    -108     -2 |       4     21
emr   uuuuu |      28      18    -108     120      1 |      25     31
esa   uuuuu |     -32      -5      51     -75     -7 |      15     23
gfz   uuuuu |      26       1      77      18      4 |       6     20
grg   uuuux |      37     -67     157    -131    -18 |     -13     42
igr   xxxxx |     -30      -8     -15     124      2 |      -1     20
irf   xxxxx |       2       5     -70       2      3 |       1     19
jpl   uuuuu |      82      -4     -11     230     -6 |      31     37
mit   uuuuu |      -3      34    -242      34      4 |      13     23
ngs   uuuuu |     -25      56     -46      41      1 |       9     17
sio   xxxxx |     170     153    -276     115      0 |      29     34

Table 7.1744.2   GPS week: 1744   Day: 2   MJD: 56454.500

                                                         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     -65    -130     -1 |      13     22
emr   uuuuu |      67       5      26      92    -10 |      32     38
esa   uuuuu |      -6      -8      25     -72    -10 |      23     28
gfz   uuuuu |      23      16      48     -67      2 |      14     24
grg   uuuux |      51     -10      53    -121     38 |      -2     31
igr   xxxxx |     -46     -11      54      -1     -7 |       8     20
irf   xxxxx |      30      -9     -27     -27      5 |       9     21
jpl   uuuuu |      57     -47     -48     176    -22 |      39     43
mit   uuuuu |      38      -4    -179      64     14 |      22     30
ngs   uuuuu |     -99      57      64     196      7 |      16     23
sio   xxxxx |     222      88    -105     114     11 |      37     42

Table 7.1744.3   GPS week: 1744   Day: 3   MJD: 56455.500

                                                         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     -27     -92     -73     -3 |      10     20
emr   uuuuu |      48      29     -61      26    -12 |      29     36
esa   uuuuu |     -11       5       7       9     -8 |      19     25
gfz   uuuuu |      -6      -5      10    -100      6 |      12     22
grg   uuuux |      -5     -17      54    -101     53 |       6     26
igr   xxxxx |      11     -28     101      17      2 |       5     20
irf   xxxxx |      10       5     -53     -19      5 |       7     20
jpl   uuuuu |      43     -45     144      83    -11 |      34     40
mit   uuuuu |      44     -16    -192      70     12 |      21     29
ngs   uuuuu |     -39      59     157      87      4 |      15     22
sio   xxxxx |     182     122    -136     183      9 |      35     39

Table 7.1744.4   GPS week: 1744   Day: 4   MJD: 56456.500

                                                         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 |     -15     -32     -11       8     -5 |       5     21
emr   uuuuu |      38      42    -100      27      2 |      24     35
esa   uuuuu |     -18     -12      -8       8     -9 |      15     25
gfz   uuuuu |       4       3      44     -59      1 |       9     22
grg   uuuux |     -26     -27     127    -171    -17 |       7     26
igr   xxxxx |      18       0     114      14      4 |       2     21
irf   xxxxx |       0       9     -52     -12      5 |       4     21
jpl   uuuuu |      28     -25     130     119     -8 |      28     37
mit   uuuuu |       0       5    -267      69     14 |      18     27
ngs   uuuuu |      33      76     122     -34      4 |      12     21
sio   xxxxx |      72      99    -160     177     13 |      32     37

Table 7.1744.5   GPS week: 1744   Day: 5   MJD: 56457.500

                                                         AC LOD  AC LOD
CENT  FLAG  |   Xpole   Ypole     Xrt     Yrt    LOD |    BIAS  BIAS RMS
            |   [uas]   [uas]   [uas/d] [uas/d]  [us]|    [us]    [us]
------------+----------------------------------------+------------------
cod   uuuuu |     -38     -25     -50     -85     -3 |       4     20
emr   uuuuu |      27      55     -29     -64     -1 |      22     32
esa   uuuuu |       4     -14      80     105      0 |      13     24
gfz   uuuuu |     -17      14      55     -50      3 |       8     21
grg   uuuux |       9     -26      69    -300    -49 |       2     24
igr   xxxxx |      20       7      23     -68      5 |       3     21
irf   xxxxx |     -11      14      -9     -55      1 |       4     21
jpl   uuuuu |      32       4      -6      67     -4 |      26     35
mit   uuuuu |     -36       5     -89     -17      7 |      19     28
ngs   uuuuu |      32      11    -147      65     -1 |      12     21
sio   xxxxx |      93      93      27     107      5 |      33     39

Table 7.1744.6   GPS week: 1744   Day: 6   MJD: 56458.500

                                                         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 |     -40     -18    -131      68     -6 |       5     21
emr   uuuuu |      30      48     -92     -78      7 |      22     32
esa   uuuuu |      11     -26      44      21     -3 |      14     25
gfz   uuuuu |       0      20     125      69      0 |      10     22
grg   uuuux |     -26     -22     114    -237    -50 |       1     26
igr   xxxxx |      25      -1      30      -3     -3 |       4     22
irf   xxxxx |      -7       6     -30     -32      2 |       5     21
jpl   uuuuu |      25      -5      90     123     -3 |      25     34
mit   uuuuu |     -20     -14    -172      18      7 |      21     30
ngs   uuuuu |      -3      65     -58    -128      4 |      13     22
sio   xxxxx |     121     112     -25      96      7 |      35     41



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