[IGSREPORT-28191] Wk 2174 IGS Final Orbits

acc acc at igs.org
Fri Sep 24 00:56:07 UTC 2021


Author:  AC Coordinator / GA MIT 

sum-file Version 2.0
Final IGS Orbit Combination - Week 2174   (Sep 05, 2021 - Sep 11, 2021)

Contacts: acc at igs.org


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

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

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

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

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

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

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


SOFTWARE:
---------

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

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

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

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

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


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

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

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

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



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

igs2174[0-6].sp3  IGS GPS ephemeris files in SP3 format.
igs2174[0-6].clk  IGS GPS satellite and station clocks in clock RINEX format.
igs2174[0-6].cls  IGS GPS clock combination summary report.
igs21747.erp      Earth Rotation Parameters (ERP) and their rates as well as
                  Universal Time (UT1-UTC) and Length Of Day (LOD) associated 
                  with IGS ephemerides.
igs21747.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   | ALGO BJFS CCJ2 CRO1 DARW FAA1 GODE HARB HOB2 HOFN
                0  |  COD   | HYDE IENG JFNG KERG KIT3 KOKB KOKV MAJU MAL2 NICO
                0  |  COD   | NLIB PARC POHN QAQ1 SCRZ SGOC SSIA THTI TONG TWTF
                0  |  COD   | UFPR ULAB USUD WARK YKRO NICO PARC YKRO
                0  |  EMR   | 32 32 HOB2 USUD
                0  |  GRG   | 32 32 STJO SVTL SVTL
                0  |  JPL   | THU2 BADG CHUR CZTG THU2
                1  |  COD   | 4 4 HARB MAJU REUN SAVO REUN
                1  |  EMR   | KERG MAS1
                1  |  ESA   | BAKE BAKE IQAL
                1  |  GFZ   | MAS1 SAVO
                1  |  GRG   | JOG2 LHAZ MCM4 REUN STK2 SVTL JOG2 LHAZ MAS1 MCM4
                1  |  GRG   | REUN STK2 SVTL WIND
                1  |  JPL   | CZTG MCM4 NYA2
                2  |  COD   | ALBH JFNG MAJU SFER THU2 ALBH SFER
                2  |  EMR   | HOB2 SFER
                2  |  GFZ   | 4 4 MDVJ SFER MDVJ SFER
                2  |  GRG   | JOG2 SVTL JFNG LHAZ SVTL
                2  |  JPL   | THU2
                3  |  COD   | BOGT DAV1 ISBA MAJU NRC1 THU2 TONG WHIT
                3  |  EMR   | FAIR MDVJ NIST WHIT
                3  |  ESA   | WHIT WHIT
                3  |  GFZ   | 4 4 12 FAIR
                3  |  GRG   | 13 SVTL YEL2 BOGT DAV1 JFNG SVTL YEL2
                3  |  JPL   | MCM4 DAV1 MCM4
                4  |  COD   | MAS1 PARC
                4  |  EMR   | HOB2 HOB2 KERG
                4  |  ESA   | MAS1
                4  |  GFZ   | 4 4 KERG
                4  |  GRG   | BOGT JOG2 MAS1 SCOR SVTL BOGT JOG2 MAS1 SVTL
                4  |  JPL   | MAS1 MAS1 MCM4
                5  |  COD   | ABMF AREG FAA1 MAJU MCM4 MDVJ PDEL SCOR SCRZ SCUB
                5  |  COD   | TONG ULAB WILL XMIS
                5  |  ESA   | MDVJ MDVJ
                5  |  GFZ   | 4 4
                5  |  GRG   | 11 MAS1 SVTL MAS1 SVTL
                5  |  JPL   | BOGT CHUR MCM4
                6  |  COD   | 13 13 MAS1 MCM4 MAS1
                6  |  EMR   | 4 HOB2
                6  |  ESA   | 2 6 12 28 PTBB ABPO ALGO ALIC AREG ASPA AUCK BAKE
                6  |  ESA   | BJFS BOGT BRAZ BRST CAS1 CCJ2 CEDU CHUR CKIS CPVG
                6  |  ESA   | CRO1 CZTG DARW DAV1 DGAR DUBO FAA1 FALK FLIN GAMG
                6  |  ESA   | GLPS GLSV GOLD GRAS GRAZ HARB HERS HOB2 HOFN HYDE
                6  |  ESA   | IRKJ KARR KERG KIRI KIRU KIT3 KOKV KOUC KOUR LAUT
                6  |  ESA   | LHAZ LPGS MAC1 MAJU MAL2 MAR6 MAS1 MATE MAW1 MBAR
                6  |  ESA   | MCIL MDO1 MDVJ MGUE MKEA NANO NICO NKLG NLIB NNOR
                6  |  ESA   | NYA1 OHI2 OHI3 ONSA OUS2 OWMG PARC PARK PDEL PERT
                6  |  ESA   | POHN POL2 POVE PRDS PTBB QAQ1 REUN SALU SCH2 SCRZ
                6  |  ESA   | SCUB SEYG SFER SGOC SOFI SSIA STHL STK2 SVTL SYOG
                6  |  ESA   | THTI THU2 TLSE TONG TOW2 TRO1 UFPR ULAB UNSA VILL
                6  |  ESA   | WHIT WIND WTZR WUHN XMIS YEL2 YKRO ZAMB ZECK
                6  |  GFZ   | 11 4 27 JOG2
                6  |  GRG   | 31 32 BJFS HYDE MAS1 PIMO HYDE MAS1
                6  |  JPL   | BADG BADG MCM4

    
 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  |  COD   | ~20:35 | ~ -0.11 ns
                6  |  ESA   | ~00:00 | ~ -61.41 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  |  GFZ   |   4
                1  |  GFZ   |   4
                2  |  GFZ   |   4
                4  |  GFZ   |   4

 8. 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.
    
    Starting 29-Jan-2017 (GPS Week 1934, day 0, MJD 57782) all IGS products,
    are based on the IGS realization of the ITRF2014 reference frame (IGS14).
    For more information see IGSMAIL #7399.
    
    Starting 17-May-2020 (GPS Week 2106, day 0, MJD 58986) all IGS products,
    are based on the updated reference frame (IGb14).
    For more information see IGSMAIL #7921.

 9. Small rotations were applied to all the AC orbit and ERP values in order to
    align them to the current IGS reference frame. These RX, RY and RZ rotations
    were estimated in the IGS SINEX combination process, performed by the IGS
    Reference Frame Coordinator at the Institut Geographique National (IGN).
    Starting on 19-Aug-2012 (GPS Week 1702; MJD=56158), ACs began contributing
    products based on 1d SINEX integrations. As a result, the SINEX combinations
    are now done daily instead of weekly, and the associated daily rotations are
    applied here to the orbits and ERPs. The estimated 7 transformations, from
    which only the 3 rotations are applied to the orbit and ERP values, are:
    
            |     |    DX     DY     DZ      RX     RY     RZ     SCL
     Centre | Day |   [mm]   [mm]   [mm]   [uas]  [uas]  [uas]   [ppb]
     -------+-----+---------------------------------------------------
       COD  |   0 |     .1    -.1     .6      -2     -1      2    -.43
       EMR  |   0 |    6.6   11.0    1.2     -15      1    -22    -.27
       ESA  |   0 |    -.7   -1.4    -.5       6      5     12    -.70
       GFZ  |   0 |     .2    -.1     .6       1     -9     18    -.60
       GRG  |   0 |    2.8    5.3  -14.1      13    -23      5    -.16
       JPL  |   0 |    2.2    4.3   -1.5       1      9     -3    -.08
       MIT  |   0 |    -.3    6.6   -3.3      10    -11    -12    -.23
       NGS  |   0 |     .9    5.0   -4.8       9     11     17    -.40
       SIO  |   0 |    -.5   10.5  -10.0     110      4     -3    -.68

       COD  |   1 |     .4     .3     .8       9      0     -9    -.52
       EMR  |   1 |   -2.2    4.5    3.6      -2     10    -17    -.38
       ESA  |   1 |    -.4   -1.2     .4      -3      5      9    -.69
       GFZ  |   1 |     .1    -.0     .6       2     -5     19    -.54
       GRG  |   1 |   -1.1    -.8   -7.4       2    -24      0    -.12
       JPL  |   1 |   -3.6    -.9   -1.6      -9     -2     -6    -.17
       MIT  |   1 |    2.8    2.9   -1.8      12     -8     -2    -.28
       NGS  |   1 |   -2.3     .9    4.4      14      1     22    -.37
       SIO  |   1 |    1.6    5.3   -2.2      40    -25    -33    -.54

       COD  |   2 |     .2    -.1    1.0      -2     14      1    -.54
       EMR  |   2 |    -.4    1.5    7.7      -5     -8    -46    -.40
       ESA  |   2 |    -.1   -1.0    -.2      10     11      8    -.58
       GFZ  |   2 |    -.1     .6     .2      13     -7      8    -.47
       GRG  |   2 |   -1.6   -3.9    8.2       7    -37     -8    -.14
       JPL  |   2 |   -2.3    -.6     .9      -6     -5    -17    -.05
       MIT  |   2 |   -1.0    2.2     .4       8      5    -11    -.21
       NGS  |   2 |   -1.8    -.1   10.7      25    -10    -13    -.33
       SIO  |   2 |   -4.1    8.0    5.7      89     24    -14    -.72

       COD  |   3 |     .5    -.0     .8       2     -1      1    -.55
       EMR  |   3 |    2.0    3.2    6.4     -16    -20    -24    -.41
       ESA  |   3 |    -.4   -1.0     .1       9     14     10    -.78
       GFZ  |   3 |     .2     .1    1.0       3    -10     11    -.63
       GRG  |   3 |    -.5   -2.8   -8.7      24    -25      4    -.17
       JPL  |   3 |     .1     .6    5.1      -8     -6    -13    -.24
       MIT  |   3 |    2.4    2.2    1.2       5     -2     -3    -.27
       NGS  |   3 |    2.0    2.6    -.8      -2    -12    -21    -.33
       SIO  |   3 |   -3.3    6.8    6.7      66     13     -1    -.89

       COD  |   4 |     .5    -.1     .6      -2     -1      0    -.50
       EMR  |   4 |    -.3    5.3    8.8      -4    -13    -18    -.33
       ESA  |   4 |    -.6    -.2     .6       5      6      4    -.63
       GFZ  |   4 |     .0     .1     .6       5    -10     17    -.61
       GRG  |   4 |    -.5    -.9    3.6       5    -27      2    -.14
       JPL  |   4 |   -2.2    1.4    3.3       2      3    -12    -.34
       MIT  |   4 |     .3    3.2    4.0       5      7      4    -.34
       NGS  |   4 |     .7    7.1    5.1      19    -25     20    -.38
       SIO  |   4 |   -3.0    7.0     .5      68      8     35    -.82

       COD  |   5 |     .5    -.1     .7      -2     -7      1    -.48
       EMR  |   5 |    3.3    1.1   12.5     -10    -21    -32    -.19
       ESA  |   5 |   -1.4    -.2     .4       7     -2     17    -.46
       GFZ  |   5 |    -.2     .2     .6       9     -4      9    -.45
       GRG  |   5 |    2.3   -3.0    3.2      23     -9     -4     .01
       JPL  |   5 |    3.3   -6.8    6.6       0      2    -16    -.05
       MIT  |   5 |    1.5     .8    5.9      -3      0     -2    -.12
       NGS  |   5 |    -.6     .3    7.4      -8    -30     12    -.27
       SIO  |   5 |    -.7    4.1    5.9      33    -42     48    -.53

       COD  |   6 |     .4    -.1     .7      -1     -2      5    -.45
       EMR  |   6 |     .3    6.6   13.8      -9    -20    -44    -.25
       ESA  |   6 |   -1.0    -.4     .1     -11     -2     14    -.67
       GFZ  |   6 |     .2    -.0     .5       4    -13     15    -.50
       GRG  |   6 |    2.2     .1    4.3      18    -12      5    -.01
       JPL  |   6 |     .5    1.4    7.1       6     -1     -3     .11
       MIT  |   6 |    -.5    4.0    8.9      -4      4     -4    -.25
       NGS  |   6 |   -3.2    7.6    9.1      18     -6     40    -.25
       SIO  |   6 |   -4.8    8.4   11.2     119     19     87    -.54


10. 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.

11. 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:
        https://files.igs.org/pub/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:
        https://files.igs.org/pub/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.
    
    Starting 29-Jan-2017 (GPS Week 1934, day 0, MJD 57782) the absolute antenna
    model file has been updated to igs14.atx to be consistent with IGS14.
    See IGSMAIL #7399 for more information
        https://files.igs.org/pub/station/general/igs14.atx


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 1.2174.a). It also displays the computed satellite
position sigmas for the combined orbits (Table 1.2174.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 2.2174.[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 3.2174.[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 5.2174.0-6). 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 2174 summary.                       (Sep 05, 2021 - Sep 11, 2021)

Table 1.2174.a   GPS week: 2174   MJD: 59462.000-59468.000

         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  684|    0     0     0   -21    -3    -2   .00    8    7 |    -615     -43      7     90
        |    0     0     1    28    17    20   .02           |     168     269
emr   79|    0     1     5    -5   -16     4   .20   13   13 |  184626      -2     15     91
        |    2     1     1     9     8     8   .03           |    8705     600
esa  150|    0     0     0    -4   -18    -4  -.02    7    7 |  -19824     745      8     81
        |    0     0     0    17    13    12   .03           |   49025     415
gfz  239|    0    -1    -3     0   -27     0   .07   12   11 |     -22      86     13     75
        |    0     0     1    16    13     9   .02           |     288     478
grg  114|    4    -2    -3     4   -20     4  -.05   10   10 |      34      53     11    142
        |    0     0     3     6    11     9   .03           |     106     346
igr  n/a|    0     0     0    -4   -24    -3   .02    4    4 |   -8097    -621     11     86
        |    0     0     0     9     9    10   .02           |    1487     499
jpl   80|    0    -1     2    -7   -22    -4   .18    8    8 |    4059     120      9     74
        |    1     1     0    13    13    13   .04           |     649     528
mit  362|    0     0     0    -4   -19    -3  -.10    7    6 |   -9721    -594     23   1456
        |    0     0     0    18    17    26   .01           |    1593     439
ngs  206|    0     0     1     0     6    -5  -.06    8    7 |    -660      48    724   1683
        |    0     0     2    22    23    11   .02           |     161     313
sio  436|   -1     0    -2    46   133    11  -.10    9    8 |     ---     ---    ---    ---
        |    0     0     1    66    47    33   .02           |     ---     ---


Table 1.2174.b   GPS week : 2174   MJD: 59462.000-59468.000   

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

              Day of GPS week
 PRN  |    0    1    2    3    4    5    6 |  Remarks
------+------------------------------------+------------------------------------------
   1  |    3    3    3    3    3    3    3 |
   2  |    3    3    3    3    3    3    3 |
   3  |    3    3    3    3    3    2    3 |
   4  |    7   11    6    7    5    7    6 |
   5  |    3    3    2    3    2    2    2 |
   6  |    3    3    3    2    2    3    3 |
   7  |    3    3    3    3    3    3    3 |
   8  |    4    4    3    3    3    3    4 |
   9  |    5    5    6    5    3    3    3 |
  10  |    3    3    3    3    2    2    3 |
  11  |  ---  ---  ---    0    4    4    4 |
  12  |    3    3    3    3    3    3    3 |
  13  |    3    3    3    2    3    3    4 |
  14  |    3    3    3    3    3    3    3 |
  15  |    4    4    4    4    4    4    4 |
  16  |    3    4    4    4    3    3    3 |
  17  |    3    3    3    4    3    3    3 |
  18  |    3    4    4    4    4    4    4 |
  19  |    3    3    3    3    3    3    3 |
  20  |    2    3    2    2    2    2    3 |
  21  |    4    4    3    4    3    3    3 |
  22  |    3    3    3    3    3    3    3 |
  23  |    3    3    3    3    3    3    3 |
  24  |    3    3    3    3    3    3    3 |
  25  |    3    3    3    3    3    3    4 |
  26  |    2    3    3    3    2    2    2 |
  27  |    3    3    4    4    3    3    4 |
  28  |    3    3    3    3    3    3    3 |
  29  |    4    4    3    4    3    3    4 |
  30  |    2    3    3    2    3    2    2 |
  31  |    3    3    3    3    3    3    3 |
  32  |    5    4    4    5    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 2.2174.0   GPS week: 2174   Day: 0   MJD: 59462.000                            

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  691|   -1     0     3   -20    16     5  -.02    6    6 |    -399    -300      6     93
emr   80|    4     4     8   -10   -26    -8   .24   15   15 |  180282    1084     15     72
esa  150|   -1     0     0   -19   -17   -19  -.04    7    7 |   -1313     386      7     73
gfz  231|    0    -2    -3    -5   -35     6   .04   11    9 |     353    -392     13     62
grg  115|    3    -2    -5    -1   -14    -9  -.01    9    8 |     216    -105      8    120
igr  n/a|    0     0     1   -17   -26   -19   .01    4    4 |   -6682     272     11     78
jpl   80|    1     0     3     7   -15   -15   .25    8    8 |    2949     909      9     73
mit  362|   -1     1     0    21   -32    39  -.09    6    6 |   -8143     164     22   1281
ngs  208|   -1     0    -2    14   -10   -25  -.06    7    7 |    -424    -251    915   2204
sio  433|   -1     0    -2    11   136    -7  -.12    9    9 |     ---     ---    ---    ---

Table 2.2174.1   GPS week: 2174   Day: 1   MJD: 59463.000                            

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  690|    0     0     0   -13   -11    -8  -.02    7    7 |    -801     235      6    100
emr   80|   -2     0     3     9    -7    -4   .24   12   12 |  181237     123     14     99
esa  150|    0     0     0    12   -12     1  -.04    7    7 |   -1493     912      8     92
gfz  242|    0    -1    -3    20   -31     0   .04   11   11 |    -442     375     12     74
grg  112|    5    -2    -3     7   -14   -10  -.04   11   11 |      44      24      9    133
igr  n/a|    0     0     0    14   -29   -10   .00    4    4 |   -6347   -1036     14    114
jpl   80|   -2     0     2    10    -5    12   .21    8    8 |    3844     545      9     77
mit  362|    0     0     0   -13   -35    10  -.11    7    7 |   -7812    -875     25   1743
ngs  210|    0     1     1    13    25     7  -.06    8    8 |    -837     277    810   1656
sio  424|   -1     1    -3   -43   124   -36  -.10   11   10 |     ---     ---    ---    ---

Table 2.2174.2   GPS week: 2174   Day: 2   MJD: 59464.000                            

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  686|   -2     0    -1   -69     9   -36   .02   10    9 |    -581    -212      7     91
emr   80|    0     1     3    -9   -26     7   .20   12   12 |  181334     334     11     81
esa  150|    0     0    -1    -4   -18     7  -.02    8    7 |   -1295     973      7     82
gfz  240|    0    -1    -1     0   -37   -12   .06   15   14 |     -49     161     11     67
grg  116|    5    -3     3     0   -35     7  -.01   12   11 |     -15      39      9    124
igr  n/a|    0     0    -1    -5   -37    10  -.00    5    4 |   -7461    -298     11     67
jpl   80|    0     0     1   -12   -37     2   .19    8    8 |    4264     327      7     64
mit  362|    0     0    -2    18    -9     7  -.10    6    5 |   -9465    -282     30   1388
ngs  206|    0     0     4   -43   -35     4  -.07    8    8 |    -635    -131    598   1503
sio  435|   -1     0    -2   109   202   -10  -.09    9    7 |     ---     ---    ---    ---

Table 2.2174.3   GPS week: 2174   Day: 3   MJD: 59465.000                            

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  683|    0     0     2   -49   -27   -17   .01    9    8 |    -529    -173      7     89
emr   80|    0     1     4    -9   -22     9   .20   13   13 |  204318      29     11     79
esa  150|    0     0     0    15   -13    10  -.00    7    7 |   -1221     740      7     80
gfz  242|    0     0    -2    13   -11    12   .08   14   15 |     133    -359     11     70
grg  117|    5    -2    -8    11   -20     9  -.08   10    9 |      -3       3      8    143
igr  n/a|    0     0     0    -8   -24     0   .03    4    4 |   -7740    -837     12    117
jpl   80|    0    -2     2    -1   -28   -13   .16    8    8 |    4636     258      8     69
mit  362|    0     0     0   -16   -40     0  -.11    8    7 |   -8895    -740     23   1217
ngs  204|    0     1     2    25    35    -5  -.07    9    9 |    -575    -111    596   1445
sio  435|   -2     0     0    13   150     4  -.09    9    8 |     ---     ---    ---    ---

Table 2.2174.4   GPS week: 2174   Day: 4   MJD: 59466.000                            

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  682|    0     1     0    -3   -14    23  -.00    7    6 |    -703     -95      6     85
emr   79|    0     2     6   -15   -17    16   .19   13   13 |  182084    -641     12    124
esa  150|    0     0     0     0   -14   -19  -.04    7    7 |   -1247      64      7     82
gfz  243|    0     0    -2    -5   -37   -12   .09   13   11 |     218    -328     11     69
grg  116|    4    -2    -2     0   -30    10  -.08   10   10 |     105    -530      8    135
igr  n/a|    0     0     0    -8   -25   -10   .05    5    4 |   -8628   -1115     11     75
jpl   80|    0    -3     1   -28   -41    -5   .15    8    8 |    4548    -413      7     76
mit  362|    0     0     0     0    -5   -12  -.10    6    5 |  -10624   -1136     21   1715
ngs  207|    0     0     1     4     5   -11  -.03    7    7 |    -702    -117    728   1557
sio  442|   -1     0    -2    48   169    29  -.08    9    8 |     ---     ---    ---    ---

Table 2.2174.5   GPS week: 2174   Day: 5   MJD: 59467.000                            

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  679|    0     0     0    -4   -13    15   .02    7    6 |    -459    -188      7     85
emr   80|   -2     1     6     8   -10     7   .20   13   13 |  182095    -517     13     89
esa  150|    0     0     0    -2    -6     0   .02    7    7 |   -1201     797      8     84
gfz  237|    0     0    -1    11    -4    -1   .08   11    9 |     -34     246     10     91
grg  114|    4    -2    -4    12    -2     7  -.08   10    9 |    -128     439      9    139
igr  n/a|    0     0     0    -3    -6     0   .04    4    4 |   -9280    -918     11     83
jpl   80|    0    -2     1   -13   -19   -21   .15    8    8 |    4651    -428      8     83
mit  362|    0     0     0   -15   -22   -30  -.10    6    6 |  -10919    -858     21   1487
ngs  204|    0     0     0     2    16     0  -.05    7    7 |    -564      23    883   1789
sio  439|   -1     0    -1    33    65    38  -.12    8    7 |     ---     ---    ---    ---

Table 2.2174.6   GPS week: 2174   Day: 6   MJD: 59468.000                            

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  677|    0     0     0     9    15     1   .00    7    6 |    -833     428     15     91
emr   80|    0     2     6    -9    -5     0   .16   13   13 |  181036    -428     31     97
esa  150|    0     1     0   -32   -47    -9  -.06    8    7 | -131003    1345     16     76
gfz  239|   -1    -1    -6   -28   -31     3   .09   12   11 |    -339     900     25     96
grg  114|    3    -3    -3     4   -23    14  -.06   11   10 |      24     504     26    200
igr  n/a|    0     0    -1     0   -19     2   .03    4    4 |  -10545    -417     12     71
jpl   80|    0    -1     2   -17   -10    11   .14    8    8 |    3524    -356     21     78
mit  362|    0     0     0   -24     7   -38  -.07    7    6 |  -12190    -435     20   1361
ngs  203|   -1     0     4   -12     5   -10  -.07    8    7 |    -883     649    538   1628
sio  444|   -1     0    -3   154    82    61  -.06    9    9 |     ---     ---    ---    ---

       
       
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 3.2174.0   GPS week: 2174   Day: 0   MJD: 59462.000                            

        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   17    7    6   11    4    6    5    6    7    2 |    28   35   28   27   28   28   31   26   29   32    27
   2  |    5   10    6    6   10    3    8    7    8    6    2 |    26   28   26   28   26   26   28   27   28   27    26
   3  |    4   11    7    6   10    3    7    7    6    9    2 |    26   32   28   28   30   28   32   26   29   31    27
  X4E |   13  ---   17   53   16    8   15   21   10   18    6 |    71  ---   72   77   70   71   67   86   74   85    74
   5  |    6   15    4    6    6    3    9    4    7    7    2 |    59   59   59   59   60   59   62   58   61   59    59
   6  |    5   12    7    6    8    4    8    7    7    7    2 |    23   27   25   24   26   23   28   24   24   27    24
   7  |    6   10    6    6    8    4    6    4    5   12    2 |    61   58   58   59   57   58   59   59   57   63    59
   8E |    6   16    4   14   17    5   10    5   10    7    3 |    29   27   31   31   37   30   27   28   28   34    28
   9E |    9   13   10   30   18    7   14    7   12   12    5 |    56   61   60   60   55   57   58   57   55   57    56
  10  |    6   11    7    6    6    4    9    6    7    8    2 |    28   36   33   32   30   31   36   28   33   28    30
  12  |    5   17    4    8    5    2    5    5    6   12    2 |    33   41   34   36   34   35   38   32   34   37    34
  13E |    5   14    8    7    8    5   10    5    5    6    2 |    63   64   64   62   65   63   62   65   63   66    63
  14  |    6   11    6    7    7    3    9    6    7    7    2 |    39   42   40   40   42   40   42   40   42   45    40
  15E |    5   28    9   18   11    5   11    6    8    7    4 |    41   49   38   42   33   38   38   38   36   39    37
  16  |    6   19    4    7    8    3    8    7    7   14    3 |    27   28   29   30   28   27   28   30   28   39    28
  17E |    5   12    8    9    9    3    9    4    8    8    2 |    42   42   46   47   43   44   42   42   39   45    42
 X18  |    6   13    9    9   10    4   10    6    6  ---    3 |    50   50   50   52   52   51   54   49   52  ---    50
  19E |    7   13    7    7    7    4    7    7    7    9    2 |    63   61   61   62   59   60   61   62   61   62    61
  20  |    4   10    5    6    7    4    8    6    7    6    2 |    20   24   23   23   22   22   26   20   23   22    21
  21  |    8   24    5   11   12    5    9    4    6   10    3 |    29   35   27   31   29   28   31   26   30   28    27
  22  |    5   15    6    6   12    3    8    4    8    7    2 |    21   29   22   23   25   22   26   22   25   26    22
  23  |    7   11    8    8    8    5    8    9    7    8    3 |    49   51   47   53   54   49   49   49   52   53    50
  24  |    6    8    7    9    6    4    5    6    8    9    2 |    24   31   26   28   27   26   30   23   27   29    26
  25  |    6   10    8    9    5    3    6    6    5   11    2 |    27   34   31   29   30   30   34   27   30   32    29
  26  |    4   10    6    8    4    3    7    5    4    8    2 |    29   31   31   30   28   30   34   27   30   30    29
  27E |    8   17    6   15    6    4   10    7    7    8    3 |    35   33   36   38   36   36   34   36   38   41    35
 X28  |    7   11    6   10    7    4    8    7   10  ---    3 |    27   28   23   25   25   24   28   27   29  ---    25
  29E |    6   20   10   15   10    5    8    8    7   10    3 |    66   67   66   67   68   67   68   66   67   69    66
  30  |    5   11    6    6    7    2    7    5    5    8    2 |    28   35   30   29   29   29   34   29   28   33    29
  31  |    8   16    6   10    7    4    8    7    8    9    3 |    54   51   52   53   50   51   53   47   49   48    50
 X32E |   11   20    8   11   12    7  ---   11   11   12    4 |    48   49   49   51   41   47  ---   47   45   44    46
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |    6   15    7   11    9    4    8    6    7    9      |T   39   41   40   41   39   39   41   39   40   42    39
 WRMS |    6   15    7    9    8    4    8    6    7    9      |NE  33   37   34   35   34   34   37   33   35   36    33
 MEDI |    6   13    7    8    8    4    8    6    7    8      |MD  33   35   34   36   34   35   34   32   34   39    34

Table 3.2174.1   GPS week: 2174   Day: 1   MJD: 59463.000                            

        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   16    7    8   14    2    8    6    6   13    3 |    26   36   27   24   21   26   31   27   26   30    26
   2  |    6    9    5    6   10    5    8    7    6    7    2 |    21   22   21   23   19   21   21   21   21   19    20
   3  |    7    8    7    8    9    3    7    7    7   10    2 |    17   26   20   16   17   19   25   19   19   20    18
  X4E |   24  ---   29   63   13    9   26   23   36   24   11 |    56  ---   56   70   56   57   53   56   69   63    54
   5  |    5   10    5    5    9    3    9    4    8    7    2 |    45   49   48   46   48   47   49   47   48   45    47
   6  |    5    8    7    9   10    3    6    6    5    7    2 |    21   25   22   21   19   20   25   17   19   23    20
   7  |    7   10    6    7    9    6    6   11    8   11    3 |    36   42   34   38   35   36   40   33   36   32    35
   8E |    4   14    5   11   16    4    9    8   10   13    3 |    24   25   23   22   28   24   28   26   26   31    24
   9E |    7   15    9   27   18    5    9   14   11   15    5 |    36   44   40   38   33   38   38   36   39   37    36
  10  |    5    8    7    6    7    4    7    6    7   11    2 |    24   29   25   25   23   24   26   24   19   23    23
  12  |    5   16    5    6    8    4    7    7    7    9    2 |    19   24   18   21   17   20   24   18   20   20    19
  13E |    7   16    8   10    9    3    9    6    6    9    3 |    48   54   50   50   50   49   53   50   52   50    50
  14  |    7   12    6    7    8    3    8    8    9    8    2 |    20   24   21   22   22   19   23   20   21   29    20
  15E |    7   17    8   15    8    4    9    8    7   12    3 |    38   41   37   39   34   36   39   36   38   38    37
  16  |   10   18    7    7    9    5   10    9    5   17    3 |    13   19   16   19   15   15   18   16   14   23    14
  17E |    6   11    8    8   14    3   10    7    8    9    3 |    31   30   33   32   31   30   29   27   29   33    29
 X18  |    8   13   10    8   11    4   10    7    8  ---    3 |    23   28   26   26   29   25   30   27   26  ---    26
  19E |    6   11    8    6   10    4    7    7    9   11    3 |    44   43   42   44   41   44   42   44   50   48    44
  20  |    5    9    4    6   10    5    7    6    9    9    2 |    16   22   17   18   14   17   22   15   19   15    16
  21  |    7   15    6   13   16    2    8    6    7   15    3 |    28   32   29   34   22   29   33   29   28   35    28
  22  |    7   11    7    9   13    3    8    6    7   10    3 |    20   29   23   25   16   23   27   22   23   23    21
  23  |    8    9    9   10   10    6    8    6    7   11    3 |    30   35   31   37   35   31   32   33   31   34    32
  24  |    8    8    7    7    8    3    7    9    7   12    3 |    20   25   22   22   19   21   27   19   21   23    20
  25  |    9    8    7    8    9    5    6    5    7    8    2 |    20   27   24   21   18   21   26   19   20   21    20
  26  |    9    7    7    8    8    3    9    7    5    7    2 |    21   26   23   24   20   21   27   19   21   23    21
  27E |    9   13    6   13    8    5    9    8    8    8    3 |    25   30   27   28   24   28   33   30   27   29    27
 X28  |    9    8    5    9    7    3    9    7   10  ---    3 |    21   25   21   17   18   19   26   20   25  ---    20
  29E |    7   20    8    7    9    5    8    8   10   10    3 |    43   45   43   43   45   43   42   46   43   47    43
  30  |    6    9    7    7    8    4    8    7    8    9    2 |    22   30   23   21   22   23   29   24   21   26    23
  31  |    8   11    8    8    8    4    9    7    8   14    3 |    35   35   33   32   30   31   38   29   32   33    32
  32E |    7    9    6   21   21    5    9    8    9   15    4 |    35   37   35   43   28   36   35   34   34   37    34
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |    7   12    7   11   11    4    8    7    8   11      |T   28   31   29   30   27   28   31   28   29   31    28
 WRMS |    7   12    7   11   11    4    8    7    8   10      |NE  23   29   24   25   22   24   28   23   24   26    23
 MEDI |    7   11    7    8    9    4    8    7    8   10      |MD  24   29   26   25   23   25   29   27   26   30    26

Table 3.2174.2   GPS week: 2174   Day: 2   MJD: 59464.000                            

        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   13    7    9   10    4    7    6    6   10    3 |    24   32   27   26   26   26   29   24   28   24    25
   2  |    9    9    7    7   10    5    7    5    7    9    2 |    20   24   22   23   22   22   23   22   23   28    21
   3  |    9    9    9    7   11    6    5    6    6    9    2 |    26   32   26   22   27   27   29   23   27   27    25
   4E |   11   21   19   57   16   13   18   16   12   17    6 |    48   28   54   61   53   53   53   58   51   59    52
   5  |    8   11    6    7    8    3    6    3    4    5    2 |    44   42   42   44   45   43   45   41   46   45    43
   6  |    6    9    7    6   12    3    6    4    7    7    2 |    30   33   30   28   27   29   31   27   27   29    27
   7  |   11    7    9    7   13    6    6    3    6   12    2 |    52   47   46   46   43   47   48   44   48   51    46
   8E |    6   12    7   13   20    5    9    7    8    5    3 |    29   28   28   25   37   27   28   29   29   30    27
   9E |   13   16    8   36   21    6   11    7   11   11    5 |    22   31   23   32   24   22   24   23   23   26    22
  10  |    9    7    7    8    8    4    6    6    8    7    2 |    28   33   31   33   29   29   32   28   32   31    29
  12  |    6   17    7    5    8    3    6    3    7    8    2 |    32   36   33   33   29   32   34   31   30   34    31
  13E |    9   10    7    9   11    3    7    5    6    7    2 |    52   58   55   55   59   54   56   55   57   56    54
  14  |    9    8    7    7    8    3    9    6    9    8    2 |    32   30   27   30   31   28   28   29   33   37    29
  15E |    9   16    9   12    9    6   11    8    9    8    3 |    40   41   37   40   40   37   39   36   37   36    36
  16  |   12   19    5    8   12    5    9    6    6   12    3 |    30   32   30   30   29   31   31   30   31   34    29
  17E |    6    9    7    8   12    3   10    4    9    5    2 |    26   29   29   28   31   28   28   27   32   31    27
 X18  |   11   14   12   10    9    5   10    6   10  ---    3 |    39   39   37   40   37   36   40   36   35  ---    36
  19E |    7   11    7    8   10    4    6    6    9    7    2 |    27   26   24   26   25   24   26   27   27   31    25
  20  |    5   10    5    4    8    4    6    3    5    6    2 |    20   27   23   22   23   22   25   21   21   23    21
  21  |   10   14    6   10   11    4    5    3   10    9    3 |    26   29   24   27   25   24   26   23   26   23    24
  22  |   12    9    9    6   13    5    7    6   11    7    3 |    28   29   24   25   22   26   28   25   28   25    24
  23  |    9    9    7   11    9    6    7    7    6    9    3 |    33   34   34   39   32   34   34   36   31   40    34
  24  |   10   10    8    9    9    5    5    6    5    7    2 |    28   32   30   29   27   29   32   26   28   32    28
  25  |   14    8    7    9    7    3    6    4    8    6    2 |    29   36   32   30   31   31   35   28   28   32    30
  26  |   12    6    6    8    8    3    7    5    7    6    2 |    31   35   33   32   30   32   35   31   31   33    31
  27E |   19   13    8   10   11    5   10    7    8    7    3 |    29   30   26   25   31   29   32   28   30   30    27
 X28  |    7    8    6   11    8    3    7    5   14  ---    3 |    23   27   23   24   23   22   26   23   27  ---    23
  29E |    7   17    7   10   13    4    7    7   10    9    3 |    23   23   22   23   23   24   24   23   26   26    23
  30  |    8    8    7    6   11    4    6    4    5    8    2 |    29   35   30   30   29   30   34   30   31   37    31
  31  |   10   11    9    9   10    4    7    4   10   10    3 |    54   52   53   54   47   53   54   52   51   52    51
  32E |    8   10    6   24   16    5    8    8   10    7    4 |    23   25   24   31   23   24   21   23   23   28    23
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |   10   12    8   15   12    5    8    6    8    9      |T   31   33   31   32   31   31   33   30   32   34    30
 WRMS |    9   12    7   14   11    4    8    5    8    7      |NE  31   34   31   31   30   31   33   30   31   33    30
 MEDI |    9   10    7    9   10    4    7    6    8    8      |MD  29   32   30   30   29   29   31   28   30   31    28

Table 3.2174.3   GPS week: 2174   Day: 3   MJD: 59465.000                            

        Weighted Average                                            Orbit Dynamics (7 days)
 PRN  |  cod  emr  esa  gfz  grg  igr  jpl  mit  ngs  sio  IGS |   cod  emr  esa  gfz  grg  igr  jpl  mit  ngs  sio   IGS
------+--------------------------------------------------------+---------------------------------------------------------
   1  |    7   13    9   10    9    4    6    5   12   10    3 |    28   34   28   26   26   27   31   25   27   27    26
   2  |    8    8    6   10   11    5    7    7    6    8    2 |    24   27   26   27   26   25   25   26   30   29    25
   3  |    5    8    8    8    8    3    7    6    7    8    2 |    26   31   27   25   28   26   31   25   27   27    26
   4E |   16   28    9   45   14    8   14   14   14   16    6 |    33   29   38   50   34   37   32   41   37   45    36
   5  |    6   12    6   10    6    4    7    5    6    7    2 |    46   46   44   47   44   46   49   47   46   51    46
   6  |    7    8    7    6    8    5    7    5    5    7    2 |    31   35   34   33   34   33   36   33   35   37    33
   7  |    8   11    9    6   12    5    6   13    6    8    3 |    56   57   53   56   53   54   55   58   57   55    55
   8E |    8   14    6    6   17    4    9    7    9    7    3 |    28   28   30   32   33   30   30   31   28   33    28
   9E |   14   14    8   31   14    4   10   13    9   13    5 |    29   32   27   32   27   29   28   28   28   30    26
  10  |    9    9    8    6    8    4    6    6    6    9    2 |    26   31   28   27   24   26   30   22   26   25    25
 X11  |    3  ---  ---  ---  --- >>>>  ---  ---  ---  ---    0 |    61  ---  ---  ---  --- 9999  ---  ---  ---  ---    62
  12  |    7   15    7    6    8    3    7    5    7   12    3 |    28   35   32   31   32   30   33   29   34   34    31
  13E |    5    8    7    7    8    4    6    6    7    7    2 |    33   35   33   33   32   33   33   32   38   33    33
  14  |    7   10    7    9    7    3   10    6    7    9    2 |    24   27   26   29   26   26   26   28   30   34    26
  15E |    7   19    8   15    8    6   11   10    9   12    4 |    40   45   41   45   38   40   43   41   43   45    41
  16  |   11   20    6    7    9    4    9   11   10    9    3 |    28   31   29   34   27   29   31   34   32   34    30
 X17E |    8    9    8    7   16    4    9    5  ---    8    3 |    25   28   26   27   30   27   25   25  ---   29    25
 X18  |    9   15   10   10   13    4   11    7   11  ---    4 |    32   35   33   37   38   32   35   33   35  ---    33
  19E |    7   11    7    7   10    5    6    7    8    9    2 |    25   28   25   25   27   24   24   24   29   25    24
  20  |    6    9    5    4    7    4    6    6    5    7    2 |    24   28   24   26   25   25   26   24   26   26    24
  21  |    7   15    8    9   11    4    7    6   16   13    3 |    29   33   28   30   28   29   32   28   34   27    28
  22  |    8    9    9    8    9    3    8    5    9    7    2 |    28   31   26   27   27   26   31   27   27   28    27
  23  |    9   10    7   12    8    5    7    5    7    9    3 |    33   39   37   45   43   36   36   39   40   45    38
  24  |    7   10    6    7   10    4    7    6   10    8    2 |    27   31   31   28   29   27   32   25   29   29    28
  25  |   10    8    8    9    6    4    7    4    6    8    2 |    24   30   29   25   26   26   28   23   28   28    25
  26  |   10    8    6   10    7    3    8    6    8    6    2 |    25   31   26   28   24   26   30   25   28   28    26
  27E |   16   14    6   14    7    4   11    8   11    5    3 |    28   29   29   30   28   29   33   31   32   30    28
 X28  |    6    9    9    8    7    4    7    6    9  ---    3 |    23   26   24   24   21   22   27   23   26  ---    23
  29E |   10   17    9   10    7    4    7    7   12   10    3 |    27   23   25   24   25   25   25   25   29   27    24
  30  |    6    8    6    6    8    3    6    5    4    9    2 |    27   29   27   28   22   27   28   26   27   30    26
  31  |    8   13    8    9    9    3    9    6   11   10    3 |    47   49   48   49   47   44   49   43   43   45    45
  32E |    8   12    7   30   13    4    7   10   13    9    4 |    30   35   32   42   31   32   27   32   33   35    32
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |    9   13    7   14   10    4    8    8    9    9      |T   31   33   31   32   30   30   32   30   32   33    31
 WRMS |    8   13    7   15    9    4    8    7    9    8      |NE  31   34   31   32   30   30   33   30   32   33    32
 MEDI |    8   11    7    9    8    4    7    6    8    9      |MD  28   31   29   30   28   29   31   28   30   30    28

Table 3.2174.4   GPS week: 2174   Day: 4   MJD: 59466.000                            

        Weighted Average                                            Orbit Dynamics (7 days)
 PRN  |  cod  emr  esa  gfz  grg  igr  jpl  mit  ngs  sio  IGS |   cod  emr  esa  gfz  grg  igr  jpl  mit  ngs  sio   IGS
------+--------------------------------------------------------+---------------------------------------------------------
   1  |    7   13    7   12   11    4    6    5    7   11    3 |    23   30   23   21   23   21   25   19   22   21    21
   2  |    6   11    6   10   10    4    8    6    6    8    2 |    22   22   22   25   23   23   22   24   24   28    23
   3  |    5    8    7   12    9    4    7    6    6   10    2 |    20   28   21   21   22   20   25   17   18   24    20
   4E |   12   25   13   53   13    8   13   11   11   16    5 |    29   31   34   49   32   32   32   36   30   43    32
   5  |    4   10    6    9    6    3    8    4    3    7    2 |    46   46   43   44   46   44   47   44   45   48    45
   6  |    6    9    6    6   11    3    7    4    5    6    2 |    25   29   26   22   27   25   26   22   26   27    25
   7  |    7   10    7    8   11    5    5    6    5   12    2 |    56   55   54   56   53   55   54   54   56   60    55
   8E |    6   12    7    5   20    4    9    7    8    6    3 |    24   23   25   24   34   23   23   24   25   24    23
   9E |    8   12    7    9   11    5    7    5    8   10    3 |    27   32   26   30   22   27   27   24   27   26    25
  10  |    7    9    7    6    7    5    8    3    7    7    2 |    20   25   23   21   18   21   25   17   19   21    20
 X11  |    7   15   10    9   12    6  ---    9   10  ---    4 |    26   19   14   17   17 9999  ---   15   12  ---    29
  12  |    5   20    6    5    8    5    7    4    6   12    2 |    24   30   26   27   25   27   29   25   26   26    25
  13E |    5   14    5    6    8    4    7    4    8    6    2 |    37   42   37   39   36   38   39   37   40   37    37
  14  |    7    9    7   10    7    3    9    6    9    7    2 |    27   29   27   29   28   26   27   28   27   33    27
  15E |    9   21    9   15    9    5   10   10    6    8    3 |    32   40   34   39   30   34   35   34   35   35    33
  16  |    7   17    6    8    7    5    9    6    7   11    3 |    26   30   30   32   29   29   30   29   33   34    29
  17E |    8    8    6   10   14    3   10    5   11    8    3 |    22   25   26   25   30   24   24   23   31   27    24
 X18  |    6   12   12   10    9    6    9    6    9  ---    3 |    29   30   30   32   32   29   33   29   29  ---    29
  19E |    7   11    6    6   10    3    7    6   10    9    2 |    31   30   29   26   30   29   30   27   27   29    28
  20  |    5    8    5    7    8    3    8    4    7    6    2 |    17   21   16   19   18   17   18   16   15   21    16
  21  |    7   12    6   12   12    4    9    6    7   11    3 |    26   27   22   25   24   23   26   22   22   23    22
  22  |    4   10    5   10   11    4    8    4    4   10    2 |    19   26   17   18   21   18   26   18   20   25    19
  23  |    7   10    8   10    8    5    8    5   10    7    3 |    33   35   33   40   37   33   34   37   37   39    35
  24  |    7    9    7    7    9    4    7    6    5    7    2 |    26   30   28   29   24   28   30   22   27   26    26
  25  |    7   10    7   11    6    5    7    3    7   10    2 |    25   32   29   30   27   29   31   27   29   28    27
  26  |    5    7    6   10    6    5    6    5    7    7    2 |    29   34   31   32   29   30   34   29   32   32    30
  27E |   10   13    8   11    7    5   10    6    8    7    3 |    23   26   24   23   27   24   26   25   27   27    23
 X28  |    7    9    6   11    7    3    8    5    9  ---    3 |    17   25   18   18   16   18   23   16   19  ---    17
  29E |    7   18    7   10    6    5   10    6    7   11    3 |    29   25   26   27   27   28   25   28   28   31    27
  30  |    6    7    7    8   10    5    6    5    5   12    2 |    29   32   30   30   28   30   31   28   31   36    29
  31  |    8   13    9   10   10    6    9    5    7    9    3 |    50   51   51   48   47   50   52   46   46   48    48
  32E |   11   10    4    7   16    6    7    7    9    8    3 |    28   27   26   30   22   26   26   25   25   29    26
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |    7   13    7   13   10    5    8    6    7    9      |T   28   30   28   29   28   28   30   27   28   31    27
 WRMS |    6   13    7   11   10    4    8    5    7    8      |NE  27   31   27   28   27   28   30   26   27   31    28
 MEDI |    7   10    7   10    9    5    8    5    7    8      |MD  26   30   26   27   27   27   27   25   27   28    26

Table 3.2174.5   GPS week: 2174   Day: 5   MJD: 59467.000                            

        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   10    7    6    9    3    7    5    7   10    2 |    25   32   24   22   25   22   26   22   25   22    23
   2  |    6   12    7    6   10    3    7    7    6    9    2 |    24   24   25   24   23   24   22   25   27   24    24
   3  |    5    8    7    8    8    4    6    5    5    7    2 |    27   31   27   25   26   25   28   24   27   26    25
   4E |   14   29    9   42   11    5   12    8   13   13    6 |    27   26   31   42   34   29   27   31   32   33    30
   5  |    4   10    7    7    5    3    7    5    6    7    2 |    46   50   48   46   46   47   48   46   46   47    47
   6  |    6    9    7    6    9    2    8    6    5    8    2 |    31   34   32   30   30   30   32   30   31   29    30
   7  |    6    8    6    5   10    5    6    7    5   11    2 |    46   45   43   45   47   45   46   44   45   43    44
   8E |    8   13    6    5   19    3    9    6    9    7    3 |    19   23   18   18   28   19   20   18   20   20    18
   9E |    7   10    6    6   12    4    9    7    9   10    3 |    27   30   27   31   23   26   24   28   30   30    27
  10  |    6    9    7    6    7    3    7    4    7    6    2 |    20   25   23   22   18   21   23   17   20   18    20
 X11  |    9   14   10    7   10    5  ---    8   11  ---    4 |    18   19   14   14   16 9999  ---   13   11  ---    21
  12  |    4   18    6    7    7    4    6    5    7    9    2 |    24   27   25   26   23   25   28   24   26   26    25
  13E |    9   15    6    6    6    6    9    5    6    6    2 |    75   77   77   76   80   76   76   77   81   76    77
  14  |    7    8    6    7    7    3    9    6    7    8    2 |    17   19   17   22   21   17   16   19   16   20    17
  15E |   11   20    9   10    8    6   13   11    7   10    4 |    40   46   40   42   37   40   42   42   41   42    40
  16  |    7   21    6    7    8    4    9    5    6   10    3 |    22   25   22   25   21   22   22   21   20   23    21
  17E |    8   11    8   10   13    3    8    6    7    6    3 |    23   23   27   30   26   24   23   24   25   28    24
 X18  |    8   14   11    9   11    5   10    9    9  ---    3 |    23   25   23   26   25   23   28   24   22  ---    23
  19E |    7   11    6    7   10    3    6    8    7    8    2 |    41   39   39   40   37   38   40   41   39   39    39
  20  |    3   12    4    5    6    4    7    5    6    6    2 |    18   21   17   17   17   17   19   17   19   19    17
  21  |    7   10    6   10   11    3    8    4    8    9    2 |    26   28   24   29   25   26   28   24   30   23    25
  22  |    5    8    7    7   10    4    8    7    5    7    2 |    20   24   18   20   19   20   24   21   21   19    19
  23  |    7   12    9   10    8    4    8    7    8    7    3 |    28   30   27   33   34   29   29   32   30   33    30
  24  |    5    8    7    6   10    3    6    6    8    6    2 |    25   29   27   22   23   24   28   21   25   25    24
  25  |    7   11    7    9    4    4    7    4    6    7    2 |    22   29   28   24   23   24   28   23   23   22    24
  26  |    6    7    6    9    5    3    8    4    5    6    2 |    24   29   25   28   21   24   27   23   23   24    24
  27E |   10   16    6    9    7    4   11    6   10    6    3 |    20   26   19   19   19   20   21   20   22   22    19
 X28  |    7    7    5   10    6    4    8    7    6  ---    2 |    14   22   15   18   15   16   21   15   16  ---    15
  29E |    8   18    8   11    9    3    8    7    7   10    3 |    47   47   46   46   45   46   45   48   48   48    46
  30  |    4    5    6    6    8    3    5    4    5   12    2 |    25   30   27   27   27   27   31   27   27   27    26
  31  |    8   11    6    8   11    5    8    7    8    9    3 |    43   47   41   46   42   42   46   38   45   40    42
  32E |    8   11    4    5   14    4   11    7    9    7    3 |    24   26   25   26   20   25   21   23   25   27    23
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |    7   13    7   11   10    4    8    6    7    8      |T   28   31   28   30   28   28   30   28   29   30    28
 WRMS |    6   13    7    9    9    4    8    6    7    7      |NE  25   29   26   26   25   26   28   25   26   26    25
 MEDI |    7   11    6    7    9    4    8    6    7    8      |MD  24   28   25   26   25   25   28   24   25   26    24

Table 3.2174.6   GPS week: 2174   Day: 6   MJD: 59468.000                            

        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   10    6   10    9    4    6    6    5    9    2 |    32   35   32   33   28   29   32   28   30   26    29
   2  |    6   11    7    8    9    4    6    7    8   10    2 |    26   27   27   26   25   26   26   26   28   26    25
   3  |    3   10    7    6   11    3    5    7    7    8    2 |    31   37   32   31   29   31   35   32   33   28    31
   4E |   12   29    8   40   11    4   11    7   10   11    5 |    30   29   35   53   33   33   32   35   31   36    33
   5  |    5   11    8    7    6    4    7    5    4    5    2 |    61   62   62   58   61   61   61   59   61   59    60
   6  |    5    7    6    8   10    2    7    5    7    8    2 |    35   37   35   33   31   34   35   33   35   32    33
   7  |    5    6    6    7   11    4    6    5    6    9    2 |    65   66   65   68   68   66   67   63   64   63    65
   8E |    8   16    7   12   23    5   11   11    8    9    4 |    26   26   26   29   39   27   26   27   26   28    26
   9E |    8    9    6    9   14    4    7    5    9    9    3 |    34   36   36   33   29   34   35   32   35   34    33
  10  |    4   11    8    7    7    4    8    5    7   12    2 |    21   27   22   23   21   22   24   18   22   23    21
 X11  |    8   13   11   12    9    6  ---    7    8  ---    4 |    22   19   15   17   18 9999  ---   17   13  ---    23
  12  |    7   17    6    8    7    4    6    9    9   11    3 |    32   36   35   34   32   32   35   35   33   35    33
  13E |   12   13    7    9   14    5   11   10   10   12    3 |   116  114  115  116  117  114  115  119  120  118   116
  14  |    6    7    6    9    7    4    7    6    8    7    2 |    33   35   34   35   36   34   35   35   35   36    34
  15E |    8   19   12   14    8    7   11    9   10   11    4 |    48   52   44   49   48   46   49   45   51   46    47
  16  |    6   22    8    6    6    3    4    6    8   14    3 |    27   29   29   29   29   29   29   27   30   28    28
  17E |    6    8    8    8   13    5    9    6    6    7    2 |    22   24   28   28   30   27   26   26   28   25    25
 X18  |   10   14   13   15    9    6    8    8    7  ---    4 |    40   38   40   44   43   38   41   41   40  ---    40
  19E |    8   11    8    7   10    5    6    6    9    8    2 |    51   49   48   51   50   47   49   50   48   45    49
  20  |    6    9    8    7    7    5    6    4    8    6    2 |    19   22   20   19   18   19   22   18   20   19    19
  21  |    9   14    4   11   11    4    7    4    7    9    3 |    33   35   31   33   28   30   33   29   30   28    30
  22  |    4   10    5    7   11    3    6    7    6   11    2 |    25   28   24   26   22   25   27   26   28   24    25
  23  |    7    9    8   11    8    4    8    5    7    9    2 |    47   45   44   53   49   46   47   49   46   49    47
  24  |    4    8    8    7    9    4    7    5    8   10    2 |    33   34   35   31   31   33   35   30   34   30    32
  25  |    8    9   17    9    6    5    6    4    8   13    3 |    28   32   35   29   28   30   32   28   31   31    29
  26  |    6    8    6    7    5    3    7    4    5    7    2 |    30   33   31   30   29   30   34   29   30   29    30
  27E |    9   14    8   17    7    5   10    7    8    8    3 |    25   28   25   28   26   25   27   26   28   26    25
 X28  |    4    8    6    9    7    5    7    7    9  ---    2 |    22   28   25   25   21   21   26   22   23  ---    23
  29E |   10   18    9   16    9    4    7    8   10   11    3 |    57   57   55   58   56   55   57   56   55   54    55
  30  |    4    6    6    6    8    3    6    7    6    8    2 |    34   36   36   37   37   37   39   34   36   33    35
  31  |   10   12    6    9   11    3   10    7    8    9    3 |    60   60   59   60   60   58   61   57   57   54    58
  32E |    9    9    5   12   16    3    8    7    8    7    3 |    29   29   26   30   19   27   25   26   27   29    26
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |    7   13    8   12   11    4    8    7    8    9      |T   37   38   37   39   37   37   39   36   37   37    37
 WRMS |    6   13    7   11   10    4    8    6    7    9      |NE  34   36   34   35   33   34   36   33   34   34    34
 MEDI |    6   10    7    9    9    4    7    6    8    9      |MD  32   35   34   33   30   32   35   30   31   31    31



Table 4: Precise Navigation Summary.

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

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

Table 4.2174   GPS week: 2174   MJD: 59462.0-59468.0

CENT| CLK EPO  |        BRUX       |        TOW2       |        YELL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3019 |U   11    11    30 |U    9    11    47 |U   11     9    28 |
emr | emr 2989 |U   12    15    43 |U   11    17    67 |U   17    20    56 |
esa | esa 3017 |    11    11    36 |     8    15    56 |    16    17    56 |
gfz | gfz 3015 |U   11    11    28 |U    8    12    42 |U   11    11    31 |
grg | grg 3014 |U   12    15    37 |U    9    14    44 |U   15    13    50 |
igr | igr 3016 |    10    11    31 |     8    12    47 |    13    13    49 |
igs | igs 3016 |    10    11    29 |     8    12    47 |    11     9    27 |
jpl | jpl 2962 |U   11    15    38 |U   10    15    53 |    14    12    35 |
mit | mit 3017 |U   11    12    30 |U    8    12    45 |U   12    13    49 |



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 5.2174.0   GPS week: 2174   Day: 0   MJD: 59462.0

CENT| CLK EPO  |        BRUX       |        TOW2       |        YELL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 2974 |    15    15    33 |  ----  ----  ---- |    12     9    26 |
emr | emr 2880 |    17    17    50 |  ----  ----  ---- |    20    14    34 |
esa | esa 2976 |    17    17    38 |  ----  ----  ---- |    16    15    32 |
gfz | gfz 2976 |    15    18    32 |  ----  ----  ---- |    11     8    25 |
grg | grg 2976 |    15    19    34 |  ----  ----  ---- |    13    10    25 |
igr | igr 2976 |    14    16    35 |  ----  ----  ---- |    13    10    26 |
igs | igs 2975 |    14    15    32 |  ----  ----  ---- |    13    10    26 |
jpl | jpl 2880 |    17    27    46 |  ----  ----  ---- |    18    14    39 |
mit | mit 2976 |    15    17    31 |  ----  ----  ---- |    12     9    24 |

Table 5.2174.1   GPS week: 2174   Day: 1   MJD: 59463.0

CENT| CLK EPO  |        BRUX       |        TOW2       |        YELL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 2976 |    12    10    27 |  ----  ----  ---- |     8     9    27 |
emr | emr 2880 |    13    13    38 |  ----  ----  ---- |    16    17    34 |
esa | esa 2976 |    10     8    30 |  ----  ----  ---- |    14    15    34 |
gfz | gfz 2976 |    11     7    22 |  ----  ----  ---- |     9    11    28 |
grg | grg 2976 |    12    12    31 |  ----  ----  ---- |    14    12    30 |
igr | igr 2973 |    12    14    32 |  ----  ----  ---- |    10    12    30 |
igs | igs 2976 |    10     8    24 |  ----  ----  ---- |    10    11    27 |
jpl | jpl 2976 |    11    10    33 |  ----  ----  ---- |    15    14    35 |
mit | mit 2976 |    12    10    26 |  ----  ----  ---- |     9    10    28 |

Table 5.2174.2   GPS week: 2174   Day: 2   MJD: 59464.0

CENT| CLK EPO  |        BRUX       |        TOW2       |        YELL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 2975 |     9    11    32 |     9    12    52 |    16    15    42 |
emr | emr 2976 |    10    13    50 |    10    20    73 |    31    49   173 |
esa | esa 2976 |    11     9    39 |     9    16    62 |    29    44   198 |
gfz | gfz 2971 |     7    12    28 |     8    11    41 |    20    31    63 |
grg | grg 2964 |     8    10    35 |    10    16    49 |    31    40   202 |
igr | igr 2976 |     7     9    32 |     8    13    52 |    30    40   192 |
igs | igs 2976 |     7     9    31 |     8    13    51 |    13    12    36 |
jpl | jpl 2976 |     8    11    39 |    10    19    57 |    17    15    41 |
mit | mit 2976 |    12    12    32 |     7    13    51 |    25    43   200 |

Table 5.2174.3   GPS week: 2174   Day: 3   MJD: 59465.0

CENT| CLK EPO  |        BRUX       |        TOW2       |        YELL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 2998 |    12    11    34 |    10    15    58 |    11    11    29 |
emr | emr 2976 |    11    13    42 |    11    18    75 |    14    18    41 |
esa | esa 2976 |    10     8    41 |     9    17    67 |    13    12    33 |
gfz | gfz 2976 |    12    11    31 |    11    13    52 |     8     6    23 |
grg | grg 2973 |    19    33    61 |    10    15    47 |    10     7    20 |
igr | igr 2976 |     9     9    34 |     9    14    61 |    10     8    25 |
igs | igs 2976 |     9     9    32 |     9    14    57 |     9     8    26 |
jpl | jpl 2976 |     9    13    40 |    11    18    62 |    12    10    38 |
mit | mit 2976 |    11    11    33 |     9    14    57 |     9     6    22 |

Table 5.2174.4   GPS week: 2174   Day: 4   MJD: 59466.0

CENT| CLK EPO  |        BRUX       |        TOW2       |        YELL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3072 |    10    12    28 |     9    10    41 |     8     6    23 |
emr | emr 3072 |    11    20    42 |    10    17    63 |    14    13    33 |
esa | esa 3072 |    10    12    34 |     8    15    45 |    11    10    29 |
gfz | gfz 3072 |    12    13    29 |     9    11    37 |     9     7    26 |
grg | grg 3072 |    11    14    34 |     8    12    39 |    12    10    23 |
igr | igr 3072 |     9    13    29 |     8    12    38 |     8     8    23 |
igs | igs 3072 |     9    12    28 |     8    11    38 |     8     7    22 |
jpl | jpl 2976 |    11    16    37 |    11    13    46 |    12    11    31 |
mit | mit 3072 |    10    13    29 |     8    12    37 |     9     8    23 |

Table 5.2174.5   GPS week: 2174   Day: 5   MJD: 59467.0

CENT| CLK EPO  |        BRUX       |        TOW2       |        YELL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3072 |    12     9    31 |     9    10    39 |     9     5    21 |
emr | emr 3072 |    17    15    44 |    11    18    60 |    12    15    37 |
esa | esa 3072 |    13    16    38 |     8    15    49 |    12    11    29 |
gfz | gfz 3064 |    11    10    27 |     7    11    35 |     8     6    22 |
grg | grg 3072 |    11    10    29 |     7    13    40 |    10     5    20 |
igr | igr 3072 |    11    12    31 |     9    11    39 |     8     7    21 |
igs | igs 3072 |    11    11    30 |     8    11    37 |     8     6    20 |
jpl | jpl 2976 |    15    14    39 |    11    13    46 |     9     9    28 |
mit | mit 3072 |    11    10    31 |     9    11    35 |     9     6    22 |

Table 5.2174.6   GPS week: 2174   Day: 6   MJD: 59468.0

CENT| CLK EPO  |        BRUX       |        TOW2       |        YELL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3072 |     7     7    26 |     7    10    47 |    13     8    29 |
emr | emr 3072 |    10    11    36 |    10    16    65 |    16    14    37 |
esa | esa 3072 |     8     8    31 |     7    14    57 |    14    10    35 |
gfz | gfz 3072 |     8    10    27 |     6    11    44 |    12     9    32 |
grg | grg 3070 |     6     8    32 |     8    13    43 |    13     7    31 |
igr | igr 3072 |     6     6    26 |     6    12    46 |    12     8    30 |
igs | igs 3071 |     7     9    27 |     7    12    51 |    12     8    30 |
jpl | jpl 2976 |    10    11    32 |     8    12    55 |    14    11    37 |
mit | mit 3072 |     7     8    26 |     7    11    47 |    12     9    28 |


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 6.2174   GPS week: 2174   MJD: 59462.500-59468.500

                                                         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 |     -17      15     -17     -52     -5 |      11     30
            |      18      31      52      66      5 |       6
emr   uuuux |      21     -38     202     250     25 |      43     53
            |      11      22      57      69     23 |      12
esa   uuuuu |      11       5       1      38      8 |      18     31
            |      15      17      35      43      3 |       3
gfz   uuuuu |     -11     -23     159    -137      3 |      30     41
            |      11      10      66      95      5 |       2
grg   uuuuu |      -3     -19     -38     -80     -4 |       8     29
            |      12      11      33      50      3 |       4
igr   xxxxx |       6       0      27      -9      0 |       4     26
            |       5      12      29      50      6 |       3
irf   xxxxx |       5      13     -41      16     -3 |       1     27
            |       5       6       6      17      4 |       5
jpl   uuuuu |      16       6      36      53     -7 |      53     59
            |      14      11      32      42     11 |       5
mit   uuuuu |      16      19    -124      12     -2 |      22     33
            |       8      18      26      35      3 |       4
ngs   uuuuu |     -33      -4     -42     -35      3 |      15     30
            |      21      14      39     122      3 |       3
sio   xxxxx |      22     -59    -273    -119      9 |      55     59
            |      34      47     104     145     10 |       2


Table 7.2174.0   GPS week: 2174   Day: 0   MJD: 59462.500

                                                         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 |     -34       2       3     -26    -10 |      22     31
emr   uuuux |      40     -71     160     383     43 |      29     46
esa   uuuuu |       7      27     -20     -10      5 |      23     33
gfz   uuuuu |       2     -15     165     -97     11 |      35     43
grg   uuuuu |      10      -8     -58     -69     -2 |      16     29
igr   xxxxx |       9       8      16     -37      1 |      10     25
irf   xxxxx |       1      20     -41      18     -9 |      10     25
jpl   uuuuu |      -1     -10      30      44      9 |      60     65
mit   uuuuu |      12      19     -96      31      2 |      29     37
ngs   uuuuu |      -4      -3      -8     -69     -1 |      22     32
sio   xxxxx |      -2    -108     -71     -76      7 |      57     61

Table 7.2174.1   GPS week: 2174   Day: 1   MJD: 59463.500

                                                         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 |     -12      35      77       2    -13 |      16     29
emr   uuuux |       3     -40     194     232     59 |      31     47
esa   uuuuu |      17      -5      42       7      9 |      19     31
gfz   uuuuu |       3     -10      40     -17      0 |      32     41
grg   uuuuu |      14      -4     -33     -63     -4 |      12     29
igr   xxxxx |       8      -2       2    -100      0 |       5     25
irf   xxxxx |       4       4     -35      19     -4 |       5     25
jpl   uuuuu |       7       2      34     -13      8 |      57     62
mit   uuuuu |      30     -11    -164      59      1 |      24     34
ngs   uuuuu |     -62       6     -91    -144      7 |      17     30
sio   xxxxx |      82     -48    -319     163     27 |      53     58

Table 7.2174.2   GPS week: 2174   Day: 2   MJD: 59464.500

                                                         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      51     -93     -12     -3 |      10     30
emr   uuuux |      21     -57     280     196     33 |      34     49
esa   uuuuu |       1      -7      29      40     12 |      15     30
gfz   uuuuu |     -14     -36     138     -30      7 |      28     39
grg   uuuuu |      -3     -31     -65     -51     -5 |       7     29
igr   xxxxx |       6     -16      38      55      7 |       1     27
irf   xxxxx |       3       7     -51      34     -3 |      -1     28
jpl   uuuuu |      13      -2      74      95    -17 |      55     61
mit   uuuuu |      15      18    -149       5     -3 |      20     33
ngs   uuuuu |     -20      17     -25    -224      0 |      13     29
sio   xxxxx |       0     -86    -364    -161     16 |      52     57

Table 7.2174.3   GPS week: 2174   Day: 3   MJD: 59465.500

                                                         AC LOD  AC LOD
CENT  FLAG  |   Xpole   Ypole     Xrt     Yrt    LOD |    BIAS  BIAS RMS
            |   [uas]   [uas]   [uas/d] [uas/d]  [us]|    [us]    [us]
------------+----------------------------------------+------------------
cod   uuuuu |       8      53     -31    -186     -2 |       9     30
emr   uuuux |      22     -22     270     296     30 |      43     52
esa   uuuuu |       8     -13      17      85      9 |      16     31
gfz   uuuuu |     -18     -28     187    -163      3 |      29     40
grg   uuuuu |     -14     -14     -63     -38     -9 |       7     29
igr   xxxxx |      11      16       5      -9      5 |       3     27
irf   xxxxx |      12       9     -35      39     -2 |      -1     28
jpl   uuuuu |      15      18       5      10    -15 |      54     60
mit   uuuuu |      25       3    -130      44     -2 |      20     33
ngs   uuuuu |     -60     -17     -49     -23      6 |      14     29
sio   xxxxx |     -14     -50    -366    -204      8 |      54     58

Table 7.2174.4   GPS week: 2174   Day: 4   MJD: 59466.500

                                                         AC LOD  AC LOD
CENT  FLAG  |   Xpole   Ypole     Xrt     Yrt    LOD |    BIAS  BIAS RMS
            |   [uas]   [uas]   [uas/d] [uas/d]  [us]|    [us]    [us]
------------+----------------------------------------+------------------
cod   uuuuu |      -6     -12     -30     -14     -3 |       8     30
emr   uuuux |      20     -19     172     194     16 |      51     57
esa   uuuuu |      -2      -5     -61     -12     11 |      18     32
gfz   uuuuu |     -12     -19     171    -252      6 |      30     41
grg   uuuuu |     -16     -17     -29    -135     -6 |       7     29
igr   xxxxx |       4      -2      20       6      3 |       3     27
irf   xxxxx |      -1      12     -41      -3     -3 |       0     28
jpl   uuuuu |      37      18      85      78     -5 |      52     58
mit   uuuuu |       9      28     -92      -5     -5 |      20     33
ngs   uuuuu |     -29     -10     -20     129      1 |      14     29
sio   xxxxx |      15     -48    -213    -217      8 |      56     60

Table 7.2174.5   GPS week: 2174   Day: 5   MJD: 59467.500

                                                         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 |      -5      -2      -3     -89     -3 |       7     30
emr   uuuux |      25     -13     126     202      1 |      56     60
esa   uuuuu |       7       8      10      86     11 |      18     32
gfz   uuuuu |     -26     -34     149    -151     -3 |      31     41
grg   uuuuu |     -11     -23     -47     -42     -2 |       6     29
igr   xxxxx |      -3       7      23     -12    -11 |       3     27
irf   xxxxx |       4      19     -40      10     -3 |      -1     28
jpl   uuuuu |      35      15      -1      61    -14 |      49     55
mit   uuuuu |       9      37    -114     -10     -6 |      19     33
ngs   uuuuu |     -26     -24      -2      16      5 |      14     29
sio   xxxxx |      51      30    -272    -273     -7 |      57     61

Table 7.2174.6   GPS week: 2174   Day: 6   MJD: 59468.500

                                                         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 |     -36     -24     -45     -38      2 |       4     27
emr   uuuux |      14     -47     211     246     -5 |      56     61
esa   uuuuu |      42      30     -13      69      3 |      18     32
gfz   uuuuu |     -11     -16     262    -251     -2 |      29     40
grg   uuuuu |      -1     -34      30    -166      2 |       3     28
igr   xxxxx |       9     -14      86      31     -5 |       0     26
irf   xxxxx |      12      18     -44      -4      3 |      -4     27
jpl   uuuuu |       6       4      28      96    -16 |      46     52
mit   uuuuu |      14      37    -123     -41     -2 |      17     31
ngs   uuuuu |     -30       0     -99      69      1 |      13     29
sio   xxxxx |      21    -101    -308     -68      6 |      55     59


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