[IGSREPORT-21278] Wk 1709 IGS Final Orbits

IGS ACC igs.acc at noaa.gov
Fri Oct 26 07:07:44 PDT 2012


Author:  AC Coordinator / NOAA NGS

sum-file Version 2.0
Final IGS Orbit Combination - Week 1709   (Oct 07, 2012 - Oct 13, 2012)

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. 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, no satellite L1/L2 delay calibration should be
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. 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 3 weeks (21 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:

igs1709[0-6].sp3  IGS GPS ephemeris files in SP3 format.
igs1709[0-6].clk  IGS GPS satellite and station clocks in clock RINEX format.
igs1709[0-6].cls  IGS GPS clock combination summary report.
igs17097.erp      Earth Rotation Parameters (ERP) and their rates as well as
                  Universal Time (UT1-UTC) and Length Of Day (LOD) associated 
                  with IGS ephemerides.
igs17097.sum      Complete report.

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

 1. The centres used in the clock combination are COD, EMR, ESA, GFZ, MIT, and JPL.
    The other centres are excluded because of poorer consistency (GRG), they provide
    broadcast clocks (NGS), or clock corrections are not provided (SIO).  The clock
    information not used is still compared to 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 12-Aug-2012 (GPS Week 1701, day 0, MJD 56151), GRG clocks are included
    after changing their procedures to generate estimates in the center-of-figure
    frame instead of the center-of-mass frame. Starting 16-Sep-2012 (GPS Week 1706,
    day 0, MJD 56186) the CODE Analysis Center began submitting two solutions: COD
    (1d SNX with 3d orbital arcs) and COF (1d SNX with 1d orbital arcs). The COD
    clocks and orbits are included for comparison only; the COF solution is
    included with weight, and is the reference clock center.
    

 2. Rapid (IGR) orbits/clocks are included in the combination for statistics only.
    Starting week 1582, a new solution from CNES/GRGS (GRG) is included with
    weight except for the clock and LOD combinations.

 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  |  COF   | MIZU SUTM
                0  |  ESA   | PALM PALM
                0  |  GFZ   | BOGT IISC KERG LPGS MATE
                0  |  GRG   | THTI LHAZ LPGS NYAL THTI
                0  |  MIT   | 27 27
                1  |  COF   | SOFI HERT HNPT HOB2 JOZ2 MIZU SOFI SUTM
                1  |  EMR   | MCM4 NYAL QAQ1 SYOG CRO1 HOB2 MCM4 NYAL QAQ1 SYOG
                1  |  ESA   | HOB2 NTUS SCH2 HOB2 NTUS SANT SCH2 TIXI
                1  |  GFZ   | BOGT CHUR HOB2 LPGS NTUS SCH2
                1  |  GRG   | CHUR CRO1 MAW1 THTI CHUR CRO1 LHAZ MAC1 MAW1 THTI
                1  |  JPL   | 8 FLIN VESL
                1  |  MIT   | 27 27 MAC1 MAC1
                2  |  COF   | CAGZ KOUC CAGZ CHUR KOUC MDVJ MIZU SUTM
                2  |  ESA   | SCH2 ZECK MDVJ SCH2 TIXI ZECK
                2  |  GFZ   | POTS RIOP URUM ZECK
                2  |  GRG   | CHUR LPGS SCH2 WROC CHUR LHAZ MAC1 OHI2 QAQ1 TIXI
                2  |  GRG   | WROC
                2  |  MIT   | 4 19 4 19 MAC1 NICO QAQ1 BOR1 INVK MAC1 QAQ1
                3  |  COF   | HNPT FLRS HNPT MIZU SOFI
                3  |  EMR   | PRDS
                3  |  ESA   | ALRT LPGS ALRT SCUB
                3  |  GFZ   | BOGT HOB2 KARR LPGS URUM
                3  |  GRG   | 13 13 WROC HOB2 LHAZ LPGS POTS
                3  |  JPL   | 8 27 HOB2
                3  |  MIT   | 27 27 DAV1 MAW1 MAW1
                4  |  ALL   | 24
                4  |  COF   | KOUC FLRS JOZ2 KOUC SOFI
                4  |  EMR   | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20
                4  |  EMR   | 21 22 23 25 26 27 28 29 30 31 32 1 2 3 4 5 6 7 8
                4  |  EMR   | 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 25 26
                4  |  EMR   | 27 28 29 30 31 32 CHUR DRAO HOB2 KOKB LPGS MCM4 MDO1
                4  |  EMR   | QAQ1 SCH2 STJO SYOG THTI THU3 USN3 WHIT WSRT YEBE
                4  |  EMR   | YELL ALGO CHUR CRO1 DRAO HOB2 IRKT KERG KOKB LPGS
                4  |  EMR   | MCM4 MDO1 NRC1 QAQ1 SCH2 STJO SYOG THTI THU3 TIDB
                4  |  EMR   | USN3 WHIT WILL WSRT YEBE YELL
                4  |  ESA   | RAMO
                4  |  GFZ   | 9 27 ADIS BOGT SANT YELL
                4  |  GRG   | CHPI HNPT LPGS RAMO
                4  |  MIT   | 17 27 17 27 JOZ2
                5  |  COD   | KOUC KOUC
                5  |  COF   | 30 30 KOUC DAV1 KOUC SUTM
                5  |  EMR   | HARB HARB LPGS MATE YELL
                5  |  ESA   | 30
                5  |  GFZ   | 30 ADIS BOGT DAV1 LHAZ LPGS MATE SSIA URUM WIND
                5  |  GRG   | GLSV GLSV KARR NRMD TIXI
                5  |  JPL   | 30
                5  |  MIT   | 27 27 DAV1 SOFI TWTF BAKO DAV1 SOFI TWTF
                6  |  COD   | KOUC YELL HOFN YELL
                6  |  COF   | 21 21 KOUC YELL HOFN KOUC MIZU NRMD SUTM YELL
                6  |  ESA   | CHUR THTI URUM CHUR SCUB THTI TIXI WIND
                6  |  GFZ   | BOGT BRMU KELY LHAZ LPGS SANT URUM
                6  |  GRG   | HOFN LPGS SOFI WSRT KOUC LPGS MAC1 NRIL SOFI URUM
                6  |  GRG   | WSRT
                6  |  JPL   | 11 21
                6  |  MIT   | 27 27 MAC1 SOFI BOR1 FAIR GMAS MAC1

 5. 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
               ----+--------+---------------
                4  |  JPL   |  24
                5  |  GRG   |  24
                6  |  GRG   |  27

 6. 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 G24 |    |  1 |    |    |    |  2 |  4 |

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

 8. Small rotations were applied to all the AC orbit and ERP values in order
    to align them to the current IGS reference frame. These 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    1.7    -.1     -50      1    -19    -.33
       COF  |   0 |     .0    1.8     .1     -43      9    -10    -.38
       EMR  |   0 |    3.4    2.1   18.8       2      1     -1    -.08
       ESA  |   0 |     .8    6.0    3.6      89   -100    106    -.17
       GFZ  |   0 |    -.5    1.1     .1     -24    -18    -15    -.06
       GRG  |   0 |    1.2    2.4   22.2     -11     36    -36    -.42
       JPL  |   0 |   -3.2    6.2   23.1     -32     13     52     .16
       MIT  |   0 |    8.8    7.4   11.1      -2      1    -26    -.11
       NGS  |   0 |   -1.3   -5.9   15.1    -123     -6    -29     .24

       COD  |   1 |    -.1    1.5     .2     -38     -1      3    -.41
       COF  |   1 |     .1    1.5     .1     -34     -2      1    -.49
       EMR  |   1 |    2.3    2.8   18.7       6      6      9    -.25
       ESA  |   1 |   -1.7    3.3    3.9      72    -30     95    -.19
       GFZ  |   1 |    -.6     .6    -.2     -38    -33    -21    -.02
       GRG  |   1 |     .3    5.3   20.7     -17     13      6    -.14
       JPL  |   1 |   -4.3    6.2   22.9     -26      1     58    -.19
       MIT  |   1 |    5.7    5.4   10.9      -2      2    -22    -.17
       NGS  |   1 |    1.2   -7.7   18.2    -152    -26    -14     .27

       COD  |   2 |    -.2    1.3     .6     -41      1      4    -.39
       COF  |   2 |    -.1     .9     .9     -31     18     -3    -.48
       EMR  |   2 |    -.2    7.3   13.9       3     -2     -9    -.14
       ESA  |   2 |    5.0    5.8    7.5     109   -117    109    -.30
       GFZ  |   2 |   -1.0     .6    -.2     -23    -11    -41    -.22
       GRG  |   2 |     .0    -.5   22.0     -29     30    -22    -.07
       JPL  |   2 |   -1.8    8.0   22.5     -21     20      1     .09
       MIT  |   2 |    4.8    6.5    8.6       6      3    -18    -.24
       NGS  |   2 |   -1.1    -.3   13.4     -86    -10     -8     .06

       COD  |   3 |    -.1    1.4     .3     -53     -3    -14    -.39
       COF  |   3 |     .2    1.4     .3     -51     -5    -20    -.31
       EMR  |   3 |    -.8    7.8    6.9       3      2     -9    -.02
       ESA  |   3 |    1.5    7.3   -1.7     131   -151    106    -.27
       GFZ  |   3 |   -1.0     .7    -.6     -38    -22    -36    -.19
       GRG  |   3 |   -1.7    3.8   13.7     -21     27    -18    -.20
       JPL  |   3 |   -3.5   11.2   12.1       0      7      1     .17
       MIT  |   3 |    -.8   10.1    9.9       5      4    -26    -.15
       NGS  |   3 |    1.4   -2.2   13.9     -90    -19      5     .24

       COD  |   4 |    -.2    1.1     .4     -63     -6     -8    -.42
       COF  |   4 |    -.3     .9     .3     -60     -6     -3    -.46
       EMR  |   4 |    -.6   10.6   15.0      -3     27    -36    -.05
       ESA  |   4 |    1.0   10.0    1.4     147   -101     75    -.23
       GFZ  |   4 |    -.9     .4    -.3     -40    -20    -37    -.22
       GRG  |   4 |    1.7    2.3   13.3     -15     40     -4    -.06
       JPL  |   4 |   -6.1    9.4   22.3     -30    -29     12     .33
       MIT  |   4 |    -.3    9.9    5.9       4     -2    -18    -.07
       NGS  |   4 |    3.8    -.4   15.4     -94    -23     22     .21

       COD  |   5 |    -.7    1.0     .4     -55      1      9    -.48
       COF  |   5 |    -.3     .9     .7     -55     -4     15    -.44
       EMR  |   5 |    2.5    2.6   14.4      -8     33    -32    -.04
       ESA  |   5 |    4.0    5.0    -.6     106   -174    130    -.25
       GFZ  |   5 |   -1.3     .8     .0     -52    -29    -26    -.20
       GRG  |   5 |    3.7    1.9   15.8     -44     44    -15    -.06
       JPL  |   5 |   -3.7    7.9   17.4      -7     -4     -4     .0 
       MIT  |   5 |    2.7    9.2   10.1       2      3    -18    -.17
       NGS  |   5 |   -3.6   -1.8   20.0    -132      3    -52     .08

       COD  |   6 |    -.5    1.0     .3     -51      2      8    -.39
       COF  |   6 |    -.6    1.0     .4     -49      5      2    -.47
       EMR  |   6 |   -1.6    1.2   14.2     -12     30    -41    -.04
       ESA  |   6 |     .4    9.2    -.7     166    -93     84    -.43
       GFZ  |   6 |   -1.6     .3     .4     -57    -24    -28    -.25
       GRG  |   6 |    1.2    -.3   18.8     -17     49    -43     .01
       JPL  |   6 |   -2.3   10.9   16.1     -49    -34     44    -.09
       MIT  |   6 |    2.2    6.9    9.3       8     -1    -18    -.09
       NGS  |   6 |     .5   -7.3   10.0     -81    -11    -14     .10


 9. 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 navigation solution is still based on the SP3 clocks but this will soon
    adopt the clock RINEX files as well.

10. Starting on 27-Feb-2000 (GPS Week 1051-0; MJD 51601) the IGS final products
    are aligned to the IGS reference frame products (station coordinates and ERPs
    as generated by IGN). For more information see IGSMAIL #2750. Because of this
    change in alignment, Table 2 has been enhanced with one additional line per AC.
    This additional line shows daily X- and Y-rotations, i.e. RX_sp3(ac) and
    RY_sp3(ac), used to align each daily AC orbit to the combined SINEX prior to
    the orbit combination. These a-priori rotations are derived from three sources:
    the daily AC polar motion estimates, XPO(ac) and YPO(ac), provided in their ERP
    files; the combined polar motion values, XPO(cmb) and YPO(cmb), from the SINEX
    combination; along with the AC TRF rotations, RX_snx(ac) and RY(ac), also from
    the SINEX combination: 
    
                      RX_sp3(ac) = YPO(ac) - YPO(cmb) + RX_snx(ac)
                      RY_sp3(ac) = XPO(ac) - XPO(cmb) + RY_snx(ac)
    
    Thus, the total rotation of the individual AC orbits w.r.t. the IGS combined
    orbit is the sum of the values in the two lines of Table 2.
    
    Starting on 19-Aug-2012 (GPS Week 1702; mjd=56158), the AC TRF rotations are
    daily values, instead of weekly ones, based on the combination of daily AC
    SINEX files.

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:
        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; since GPS Week 1632 the JPL solution is excluded from
    the weekly SINEX combination.
    
    Starting 07-Oct-2012 (GPS Week 1709, day 0, MJD 56207) the igs08.atx absolute
    antenna model file gives updated (IGSMAIL #6662) values for the JPSREGANT_DD
    and JPSREGANT_SD antennas, plus updates for GPS IIF transmit antennas. This
    updated file should be used in conjunction with IGb08. Though, igs08.atx is
    also still consistent with IGS08.

    
ORBIT COMBINATION AND EVALUATION STATISTICS:                                    
--------------------------------------------                                    
      
Most combination statistics are with respect to the combined orbits and
consist of five 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 1.1709.a). It also displays the computed satellite
position sigmas for the combined orbits (table 1.1709.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 2.1709.[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 3.1709.[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 and final
part, Table 5, is similar to Table 4 and contains daily precise navigation
statistics (tables 5.1709.0-6).

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 1709 summary.                       (Oct 07, 2012 - Oct 13, 2012)

Table 1.1709.a   GPS week: 1709   MJD: 56207.000-56213.000

         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  257|   -1     1    -1    92   -11     5  -.48   12   11 |    -442    -530     32     88
        |    0     0     1    36    22    10   .06           |     450     865
cof  255|   -1     0    -2    61  -117     8  -.47   13   13 |    -393    -539     20     83
        |    0     0     1    35    20    18   .05           |     453     869
emr   79|   -1    -1     4   -51   -27   -10   .27   18   18 |    1824    1063     13     93
        |    1     1     1    20    42    12   .03           |     781    1627
esa  178|    0     0     1  -176   104   -19   .05    8    8 |   -1208    1464     12    144
        |    0     0     1    51    85    11   .02           |    1790    1419
gfz  189|    0     0    -2    47   -26    11  -.41   12   12 |    -333     312     22    142
        |    0     0     0    71    60    13   .04           |     355     660
grg  120|    2     1     6    30   -66     3   .46   15   15 |    -208     170     13    148
        |    1     1     2    21    35    18   .04           |     329     606
igr  n/a|    0     0    -2    -5   -39   -30  -.18    5    5 |    3847     914     19     98
        |    0     0     0    21    23    13   .03           |    1396     779
jpl   80|    0     0    -4    23   -16    18   .39   15   15 |    2782     536     19    123
        |    1     0     2    40    46     8   .05           |     576     742
mit  240|    0     0    -3   -15    -8    -7  -.22    8    8 |    -173      66     21    220
        |    0     0     1    38    21    15   .03           |     354     546
ngs  242|    0     0     3   199     9    20   .30   11    9 |    -433    -521   1860   3490
        |    0     0     3    47    49    16   .04           |     350     667
sio  262|   -1     2    -5    -4   -11   -45  -.46   21   20 |     ---     ---    ---    ---
        |    1     1     1    29    31    11   .05           |     ---     ---


Table 1.1709.b   GPS week : 1709   MJD: 56207.000-56213.000   

         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  |    5    5    5    5    5    5    5 |
   2  |    5    4    4    4    5    5    5 |
   3  |    4    4    4    4    5    4    4 |
   4  |    4    4    4    3    4    4    4 |
   5  |    4    4    5    4    5    4    4 |
   6  |    4    4    4    4    5    4    4 |
   7  |    5    5    5    4    5    5    4 |
   8  |    6    6    5    6    7    5    4 |
   9  |    5    4    4    4    5    5    4 |
  10  |    4    4    5    4    5    4    4 |
  11  |    4    5    4    4    5    5    4 |
  12  |    5    5    5    4    6    5    5 |
  13  |    5    4    4    4    5    5    4 |
  14  |    5    4    4    4    5    5    4 |
  15  |    5    5    5    4    5    5    4 |
  16  |    5    5    5    5    5    5    4 |
  17  |    5    4    4    4    5    5    4 |
  18  |    5    4    5    4    5    5    4 |
  19  |    5    4    4    4    5    4    4 |
  20  |    5    4    4    4    5    5    4 |
  21  |    4    4    4    4    5    4    5 |
  22  |    5    4    4    4    5    4    4 |
  23  |    5    4    4    4    5    5    5 |
  24  |  ---    0    0    0   51    0   44 |
  25  |    6    5    5    5    6    5    5 |
  26  |    4    4    4    4    5    4    4 |
  27  |    5    6    6    6    6    6    5 |
  28  |    5    5    4    4    5    5    4 |
  29  |    5    4    4    4    5    5    5 |
  30  |    4    4    4    4    5    5    4 |
  31  |    6    5    5    4    6    6    5 |
  32  |    4    4    4    4    5    5    4 |



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
         sum of a priori and estimated transformations.
         WRMS - RMS weighted by the centres SP3 header accuracy codes.
         STA  - Number of stations in the daily solutions.
   
Table 2.1709.0   GPS week: 1709   Day: 0   MJD: 56207.000                            

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  253|   -1     1     0    50    -4    11  -.43   12   12 |    -457    -870     35     89
        |                     50   -31                       |
cof  256|   -1     2    -5    13  -125     3  -.47   16   15 |    -410    -877     22     85
        |                     86    81                       |
emr   80|    0    -3     4   -63    33    -2   .31   18   18 |     648     824     16    112
        |                     34   -40                       |
esa  178|    0    -1     2  -136    81   -19   .06    9    9 |   -2453    3331     12    161
        |                      7    77                       |
gfz  193|    0     1    -1    42     3    37  -.43   12   12 |     237    -891     21    138
        |                    -14    -2                       |
grg  120|    3     0     2     2   -52   -20   .46   16   15 |     238    -364     13    157
        |                      6    13                       |
igr  n/a|    0     0    -2   -42   -29   -37  -.14    5    5 |    1423    1452     19     91
        |                      1    50                       |
jpl   80|    0     0    -3    -4   -52    22   .41   16   15 |    1796     925     20    127
        |                     45    13                       |
mit  240|    0     0    -2   -19     9   -19  -.21    7    7 |    -635     453     20    199
        |                     -7   -10                       |
ngs  243|    0     1     3   215    -2    11   .28   11    9 |    -450    -793   1775   3777
        |                    -49    33                       |
sio  263|   -1     0    -6   -19     6   -23  -.40   21   20 |     ---     ---    ---    ---
        |                    -26    24                       |

Table 2.1709.1   GPS week: 1709   Day: 1   MJD: 56208.000                            

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  259|   -1     0    -3    38     8     9  -.45   11   10 |    -754       8     34     78
        |                      5    10                       |
cof  258|    0     0    -2    14   -77    32  -.42   14   14 |    -713       8     20     70
        |                     20   105                       |
emr   78|    0    -2     4   -50     7   -37   .27   17   17 |    1416    1179     16     98
        |                     12    16                       |
esa  178|    0     0     2  -113   -44   -13   .08    9    9 |   -1356    1571     13    125
        |                    -23   169                       |
gfz  193|    0     1    -2   -14    55     4  -.37   11   10 |    -318     668     21    141
        |                    -51   -54                       |
grg  119|    1     1     2     3    -7     1   .50   16   16 |    -480     651     13    140
        |                    -25   -22                       |
igr  n/a|    0     0    -2   -12    -9   -50  -.17    5    4 |    2884    1384     20     95
        |                    -47    63                       |
jpl   80|    2     0    -4     8     0    27   .44   15   15 |    2748     800     21    151
        |                      9    32                       |
mit  240|    0     0    -4   -46   -13    -3  -.20    6    6 |    -325     657     24    202
        |                    -29    -3                       |
ngs  245|    0     0     9   264    74     6   .33   11    9 |    -748       9   1675   3272
        |                    -45     8                       |
sio  246|    0     2    -5   -33   -17   -41  -.45   20   17 |     ---     ---    ---    ---
        |                    -30    51                       |

Table 2.1709.2   GPS week: 1709   Day: 2   MJD: 56209.000                            

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  258|   -1     1     0    86     0     9  -.41   12   11 |    -244   -1079     33    112
        |                     31   -11                       |
cof  251|   -2     0    -3    59  -124   -18  -.40   12   12 |    -204   -1081     21    108
        |                     74    92                       |
emr   80|   -2    -1     6   -51     4   -13   .27   19   19 |    2125      25     15    126
        |                     74   -23                       |
esa  178|    0     0     2  -153   146   -17   .07    8    8 |   -2311    2280     14    138
        |                     27    32                       |
gfz  187|   -1     0    -3   -34   -28    -3  -.38   11   11 |    -405     100     23    151
        |                     -2    -2                       |
grg  118|    3     2    11    45   -57    -8   .51   15   14 |      25    -591     13    155
        |                     25   -14                       |
igr  n/a|    0     0    -2    27   -32   -39  -.18    4    4 |    3687     483     19     96
        |                    -16    40                       |
jpl   80|    0    -1    -5    45   -47    24   .41   15   15 |    3024    -113     18    123
        |                     51     0                       |
mit  240|    0     0    -3   -20   -21    17  -.22    7    7 |     -60       3     22    216
        |                    -18   -16                       |
ngs  240|    0     0     1   179    -1     9   .27   10    9 |    -265   -1049   1788   3348
        |                      0    28                       |
sio  265|    0     2    -5   -13    44   -54  -.47   21   20 |     ---     ---    ---    ---
        |                     -6   -25                       |

Table 2.1709.3   GPS week: 1709   Day: 3   MJD: 56210.000                            

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  259|   -1     1    -1   104   -32    13  -.49   13   13 |     274   -1753     33     83
        |                     27     9                       |
cof  256|   -1     0    -1    73  -136    30  -.44   13   13 |     326   -1768     19     83
        |                     24    90                       |
emr   80|   -1    -2     2   -73   -34     2   .30   18   18 |    2242     881     14     98
        |                     36   -24                       |
esa  178|    0     1     0  -206   179   -18   .04    7    7 |    2256    -401     12    139
        |                     43     6                       |
gfz  189|    0     0    -2   130     4    14  -.44   12   11 |    -437     654     21    154
        |                    -45   -28                       |
grg  118|    2     1     4    46   -88    32   .46   15   14 |    -492     717     13    138
        |                     36   -13                       |
igr  n/a|    0     0    -1   -11   -72   -14  -.20    4    4 |    4263     952     19    120
        |                    -29    26                       |
jpl   80|    0     0    -2   -27   -58    15   .38   15   14 |    2991     552     18    115
        |                     26    10                       |
mit  240|    0     0    -2    21   -27   -25  -.22    6    6 |     125       7     20    231
        |                    -45   -12                       |
ngs  243|    0    -1     1   133   -24    31   .29   10    9 |     214   -1528   2134   3709
        |                    -20    -6                       |
sio  259|   -2     1    -6     1   -40   -44  -.49   20   19 |     ---     ---    ---    ---
        |                    -29    31                       |

Table 2.1709.4   GPS week: 1709   Day: 4   MJD: 56211.000                            

CENT STA|   DX    DY    DZ    RX    RY    RZ   SCL  RMS  WRMS|    TOFT   TDRFT   SDEV    RMS
        |  [mm]  [mm]  [mm] [uas] [uas] [uas] [ppb] [mm] [mm]|    [ps]  [ps/d]   [ps]   [ps]
--------+----------------------------------------------------+------------------------------
cod  260|    0     1    -1   137    13    -9  -.57   11   11 |    -128    -582     28     87
        |                     41    -9                       |
cof  258|    0     1    -1    93  -107     0  -.54   14   14 |     -68    -600     18     78
        |                     70   155                       |
emr   80|   -1     0     3   -65   -62    -5   .22   17   17 |    1324    4407      0      0
        |                     70    -6                       |
esa  178|    0    -1     0  -219    84   -44   .04    8    8 |   -2962    2696     14    151
        |                     52    94                       |
gfz  189|    0     0    -3   123  -121    20  -.48   18   18 |    -721     998     26    143
        |                    -36     5                       |
grg  120|    2     1     7    20   -65    15   .40   15   15 |    -392     246     14    121
        |                     50   -19                       |
igr  n/a|    0     0    -3     7   -22   -21  -.23    5    5 |    4123    1660     19     90
        |                    -51    53                       |
jpl   80|   -1    -2    -8    45    29    18   .28   16   15 |    2431    1385     18    107
        |                      4    23                       |
mit  240|    0     0    -5    31   -19   -10  -.27   11   11 |    -166    -227     19    227
        |                    -26   -31                       |
ngs  243|    0     1     6   170    83    49   .26   11   10 |    -325    -275   1856   3597
        |                    -58    18                       |
sio  265|   -3     3    -6    41   -47   -50  -.56   21   20 |     ---     ---    ---    ---
        |                    -40    29                       |

Table 2.1709.5   GPS week: 1709   Day: 5   MJD: 56212.000                            

CENT STA|   DX    DY    DZ    RX    RY    RZ   SCL  RMS  WRMS|    TOFT   TDRFT   SDEV    RMS
        |  [mm]  [mm]  [mm] [uas] [uas] [uas] [ppb] [mm] [mm]|    [ps]  [ps/d]   [ps]   [ps]
--------+----------------------------------------------------+------------------------------
cod  260|    0     2    -1   108   -48    15  -.51   11   11 |   -1071     977     31     80
        |                      3    18                       |
cof  256|   -1     0     0    78  -137     0  -.52   12   12 |   -1029     978     20     75
        |                     32   130                       |
emr   80|    0    -1     2   -43   -73   -11   .27   18   18 |    1930     941     15    108
        |                     34   -38                       |
esa  178|    1     0     2  -150   216   -13   .02    7    7 |     -86    -166     11    136
        |                      7   -11                       |
gfz  189|   -1     0    -2   -18   -88     7  -.40   13   13 |    -710     783     21    135
        |                    -56    -8                       |
grg  118|    4     0     5    43  -123    12   .44   16   16 |    -503     894     15    173
        |                     -7     0                       |
igr  n/a|    0     0    -3    -7   -69   -14  -.20    5    5 |    4762    1092     19     94
        |                    -39    73                       |
jpl   80|    0     0    -7     1   -45     0   .39   15   15 |    2814     991     17    115
        |                      5    40                       |
mit  240|    0     0    -5   -76   -22   -15  -.24   10   10 |    -521     511     23    232
        |                    -10   -27                       |
ngs  245|    0     0     5   255   -39    26   .29   10    9 |    -761     459   2160   3070
        |                   -152    83                       |
sio  269|   -3     3    -6   -34   -27   -57  -.47   21   21 |     ---     ---    ---    ---
        |                    -46     5                       |

Table 2.1709.6   GPS week: 1709   Day: 6   MJD: 56213.000                            

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  256|   -1     1     1   121   -16   -10  -.51   11   11 |    -718    -413     33     90
        |                     21     2                       |
cof  254|   -1     0     0    98  -112     7  -.51   10   10 |    -658    -434     20     86
        |                     47   100                       |
emr   80|   -3     0     4   -11   -68    -8   .27   18   18 |    3086    -811     16    114
        |                     15   -23                       |
esa  178|    1     0     1  -255    68    -9   .04    6    6 |   -1546     942     14    159
        |                     93    66                       |
gfz  189|   -2    -1    -2   101   -10     2  -.40   11   11 |      18    -127     21    135
        |                    -74   -44                       |
grg  129|    1     0     7    51   -72   -12   .49   15   15 |     142    -359     15    153
        |                     16   -14                       |
igr  n/a|    0     0    -1     1   -42   -36  -.16    5    5 |    5793    -621     19    101
        |                      9    57                       |
jpl   80|    0     0    -2    92    57    18   .39   15   15 |    3673    -783     21    126
        |                     15   -22                       |
mit  240|    0     0    -2     2    32     7  -.18    8    7 |     369    -936     23    235
        |                    -24   -32                       |
ngs  241|    0     0    -1   175   -23     5   .39   11   10 |    -700    -475   1638   3661
        |                    -23    62                       |
sio  269|    0     3    -3    25     1   -48  -.42   23   23 |     ---     ---    ---    ---
        |                    -71    -5                       |

       
       
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 3.1709.0   GPS week: 1709   Day: 0   MJD: 56207.000                            

        Weighted Average                                                 Orbit Dynamics (7 days)
 PRN  |  cod  cof  emr  esa  gfz  grg  igr  jpl  mit  ngs  sio  IGS |   cod  cof  emr  esa  gfz  grg  igr  jpl  mit  ngs  sio   IGS
------+-------------------------------------------------------------+--------------------------------------------------------------
   1  |   16   19   22   11   10   13    7   13    7   11   14    4 |    25   26   22   22   21   29   20   24   24   28   19    22
   2  |    9   14   18    8   18   15    5   16    9   11   25    4 |    19   19   25   20   11   21   15   23   15   19   31    15
   3  |    8   13   15    7   11   14    4   10    7   11   23    4 |    23   26   27   23   28   30   24   29   23   22   26    23
   4  |   10   19   13    6    7   13    4   11    5    9   27    3 |    32   33   32   30   34   30   30   35   32   33   28    32
   5  |   15    8   18    8   11   20    5   17    6    9   14    4 |    21   20   33   19   22   32   22   31   23   27   20    23
   6  |    8   14   15    8   13   11    4   10    8   12   20    4 |    37   40   38   34   41   39   36   40   36   32   33    35
   7  |   16   25   21    7   10   17    3   20    9    9   13    5 |    23   26   27   22   22   31   19   29   18   29   20    21
   8E |   24   24   24   13   12   19    8   17   13   16   26    6 |   129  133  129  131  131  128  126  133  123  133  129   129
   9  |   13   13   13    8   14   20    6   13    8   16   13    4 |    22   22   26   25   22   31   23   25   22   27   22    22
  10  |    8   15   16    7   12   14    5   13    6    8   27    4 |    62   65   65   63   61   64   61   68   62   62   69    63
  11  |   12   14   16    8   10   16    5   10    7   10   15    4 |    18   21   24   18   22   29   17   24   17   13   22    16
  12  |   14   15   22   10   13   21    6   16    7    9   20    5 |    16   22   27   22   22   24   19   22   19   24   21    19
  13  |    7   14   16   11   11   19    4   13    7   12   18    4 |    28   28   35   32   33   44   30   38   27   32   24    31
  14  |   12   15   15   11   14   15    4   15    7   12   16    4 |    24   27   34   35   36   40   30   35   31   35   22    32
  15  |   14   13   20   13   12   18    5   20    7   10   27    5 |    20   25   29   26   22   34   22   27   22   26   28    22
  16  |   11   13   19    7   14   16    3   19    7   12   21    4 |    21   23   28   21   25   28   20   25   21   25   18    21
  17  |   14   15   19   11   12   15    4   16    5   13   27    4 |    24   26   32   25   27   30   25   31   25   30   28    26
  18  |   10   13   18   10   14   19    5   21    6    8   19    5 |    29   32   38   31   24   40   31   39   33   35   34    31
  19  |    8   19   17    8   11   11    5   14    6   13   30    4 |    21   28   28   22   24   21   21   27   22   22   26    21
  20  |   11   14   17    9   13   15    6   16    8    9   18    4 |    22   25   29   21   18   30   21   30   22   25   32    22
  21  |   10   12   12    9    9   20    3   13    5   10   18    4 |    16   17   29   23   17   36   17   22   18   21   13    20
  22  |   11   13   17    8   14   19    5   18    6   11   16    4 |    25   27   34   30   21   40   26   36   27   35   28    28
  23  |    9   14   18   10   13   12    4   16    6   12   24    4 |    20   23   29   23   26   29   22   30   20   21   19    22
  25  |   13   19   27   10   14   19    5   14    8   13   19    5 |    23   25   26   21   19   27   19   31   19   28   22    20
  26  |   11   15   13   11    8   17    5   10    5    9   10    4 |    24   21   22   23   22   30   23   22   22   23   21    21
 X27  |   16   16   14   11   13   20   10   16    7  ---  ---    5 |    20   27   25   29   22  580   22   27   21  ---  ---    22
  28  |   15   15   20    8   16   16    4   20    6    8   16    4 |    16   19   27   24   27   34   21   26   22   25   18    23
  29  |   14   17   18   10   12   15    4   19    7   10   36    4 |    27   29   34   26   24   27   26   34   25   29   27    25
  30  |   10   12   12    9   13   13    5   13    7   13   13    4 |    45   46   45   46   46   42   44   38   46   46   44    45
  31  |    8   16   24   11   12   17    5   21   10   11   15    5 |    21   21   28   19   23   28   19   26   18   27   16    19
  32  |   10   15   20   10   11   14    5   12    7    7   23    4 |    36   40   39   36   36   32   35   41   36   36   40    35
------+-------------------------------------------------------------+--------------------------------------------------------------
 RMS  |   12   16   18    9   12   16    5   16    7   11   21      |T   28   31   34   30   29   53   28   34   28   32   30    29
 WRMS |   12   15   18    9   12   15    5   15    7    9   20      |NE  25   27   31   27   26   51   25   31   25   28   26    25
 MEDI |   11   15   18    9   12   16    5   16    7   11   19      |MD  23   26   29   24   24   31   22   30   22   27   24    22

Table 3.1709.1   GPS week: 1709   Day: 1   MJD: 56208.000                            

        Weighted Average                                                 Orbit Dynamics (7 days)
 PRN  |  cod  cof  emr  esa  gfz  grg  igr  jpl  mit  ngs  sio  IGS |   cod  cof  emr  esa  gfz  grg  igr  jpl  mit  ngs  sio   IGS
------+-------------------------------------------------------------+--------------------------------------------------------------
   1  |   12   15   24    9    8   15    7   14    5   12   14    4 |    20   23   26   21   22   23   20   24   20   28   17    21
   2  |    7   14   16    6   10   17    3   14    5   11   24    4 |    17   18   22   16   16   19   15   20   16   21   31    15
   3  |    9   14   10    6   11   16    4   11    8   10   19    4 |    17   18   22   17   20   25   16   20   17   23   24    17
   4  |    9   12   12    9    6   13    4    9    5   11   25    3 |    28   31   28   27   32   24   26   30   28   29   27    27
   5  |   12   10   16    9   10   18    4   17    5    9   12    4 |    23   26   33   25   30   33   24   30   28   29   25    27
   6  |    7   13    9    7   14   12    3    9    6    9   16    3 |    33   33   36   32   34   36   32   34   31   34   36    31
   7  |   10   17   20   10   11   16    5   19    6   11   14    4 |    17   19   26   17   18   26   15   26   16   23   17    16
   8E |   19   18   23   10   15   18    8   15    9   16   26    5 |    99   97  103   99   98   98   98  101  100   97   98    97
   9  |   12   14   13   12   12   15    5   11    6   13   14    4 |    16   20   23   21   21   24   20   19   22   28   19    19
  10  |   13   14   13    9   11   16    3   14    5    8   30    4 |    68   67   72   66   69   66   67   71   69   68   83    68
  11  |    8   14   16    9    9   21    4   10    7   15   13    4 |    18   21   22   19   21   26   16   21   16   22   20    17
  12  |    8   19   20   13   12   16    5   19    7   13   18    5 |    17   27   24   17   22   23   16   23   17   24   20    18
  13  |    9   16   16    7    9   18    3   14    4    9   25    4 |    21   23   32   28   26   37   23   33   22   32   21    26
  14  |    8   14   15    7   11   15    4   12    5    8   15    3 |    17   23   28   25   22   29   19   29   19   27   18    21
  15  |   10   12   20   11   11   14    8   20    5   12   25    4 |    16   22   29   25   22   27   19   26   20   26   27    21
  16  |   11   14   19    9   12   16    3   19    6    7   22    4 |    20   24   28   22   22   28   20   27   21   25   17    21
  17  |   14   12   19    8    9   15    4   17    6   10   27    4 |    17   23   28   23   23   24   20   28   21   26   19    21
  18  |    6   12   13    7   12   20    3   14    6    9   13    4 |    28   30   35   32   25   38   29   37   30   32   30    29
  19  |   12   14   16    7    8   13    4   14    6   11   28    4 |    17   20   22   18   21   17   17   23   18   23   21    17
  20  |   10   15   18    8    9   15    4   17    6    8   15    4 |    24   30   29   26   23   30   25   30   26   35   24    27
  21  |    9   10   14    7    9   22    4   13    6    8   14    3 |    11   12   21   14   14   32   11   19   12   18   14    14
  22  |    7   12   14    7   12   20    3   13    5    9   12    4 |    22   23   30   29   23   39   26   35   27   31   26    27
  23  |   10   15   16    9   10   13    4   16    6   11   25    4 |    17   21   25   22   22   24   18   27   17   26   16    20
 X24  | >>>>    8  ---  ---  ---  --- 7977  ---  ---  ---  ---    0 |   867    1  ---  ---  ---  --- 9999  ---  ---  ---  ---     1
  25  |   10   22   26    9    7   16    6   14    5    8   19    4 |    16   24   22   18   16   28   15   27   16   20   19    16
  26  |    9   18   12    9    8   13    4   12    5   11   14    4 |    22   24   24   23   25   26   22   22   23   25   27    22
 X27  |   16   24   16    9   12  ---   11   13    8  ---  ---    5 |    16   33   25   28   24  ---   22   22   22  ---  ---    21
  28  |   11   15   20   10   13   13    5   15    8   10   13    4 |    18   20   30   22   22   32   19   25   19   27   18    21
  29  |   15   15   17    8   10   13    3   19    5   12   31    4 |    16   20   25   18   19   19   16   25   19   22   23    18
  30  |   11    9   14    6   10   13    4   11    5   12   14    3 |    34   35   39   40   33   40   36   38   34   46   35    36
  31  |   11   14   22    8   11   15    5   19    6   11   15    4 |    18   19   27   19   19   29   17   26   17   26   18    18
  32  |   11   14   18    9   10   15    3   14    8    6   21    4 |    45   46   48   44   44   45   44   51   44   45   49    44
------+-------------------------------------------------------------+--------------------------------------------------------------
 RMS  |   11   14   17    9   11   16    5   15    6   11   20      |T   51   27   31   27   27   32   25   31   26   31   27    25
 WRMS |   10   14   17    9   10   16    4   15    6    9   17      |NE  49   25   29   25   25   29   22   28   23   29   25    23
 MEDI |   10   14   16    9   10   15    4   14    6   10   16      |MD  18   23   28   23   22   28   20   27   21   26   21    21

Table 3.1709.2   GPS week: 1709   Day: 2   MJD: 56209.000                            

        Weighted Average                                                 Orbit Dynamics (7 days)
 PRN  |  cod  cof  emr  esa  gfz  grg  igr  jpl  mit  ngs  sio  IGS |   cod  cof  emr  esa  gfz  grg  igr  jpl  mit  ngs  sio   IGS
------+-------------------------------------------------------------+--------------------------------------------------------------
   1  |   13   13   21    8   12   13    7   15    9    9   17    4 |    25   26   24   19   21   28   22   28   23   24   16    20
   2  |    8   13   17    8   11   16    5   16    7    9   24    4 |    19   21   24   14   14   26   16   22   15   24   29    15
   3  |   11   10   17    6   12   12    2   12    9   13   21    4 |    19   23   22   22   23   25   20   27   20   26   25    19
   4  |   10   14   15    7    8   16    3   11    6    9   21    4 |    23   28   30   26   29   24   25   33   26   31   27    27
   5  |   12    7   18    9   11   15    3   18    9   11   15    4 |    24   26   32   27   24   36   25   34   27   34   24    26
   6  |   10   11   17    7   11    8    3   11    7   15   20    4 |    25   29   28   30   27   29   26   34   28   29   26    26
   7  |   10   13   18    9   11   14    4   17    8   10   14    4 |    15   21   23   15   16   27   12   24   15   20   14    14
   8E |   17   14   24    8   11   18    6   17    7   10   26    4 |   100   94  100   93   97   97   95   98   94   93   97    94
   9  |   13   10   14   10   12   11    4   12    8    7   16    4 |    26   25   27   21   25   32   25   28   27   26   26    23
  10  |   14   13   16    8   11   25    5   14    6    9   26    4 |    96   98  101   93   94   93   95  103   95  102  105    95
  11  |   12   11   14    9    9   16    5    9    8    8   13    3 |    26   30   28   25   26   30   25   31   26   27   26    23
  12  |   15   14   22   10    9   16    6   16    7   12   16    4 |    25   32   34   26   31   28   24   32   26   28   26    27
  13  |    8   11   16    7   10   17    4   14    5   10   22    4 |    21   22   30   26   22   37   21   32   20   24   19    23
  14  |   10   14   19    8   11   14    2   14    6    8   18    4 |    19   24   35   30   26   36   23   33   25   29   21    27
  15  |   14    9   20   11   12   11    3   21    8   12   30    4 |    24   28   29   24   23   33   24   29   25   27   30    22
  16  |   11   10   23    6   13   13    2   19    7   10   22    4 |    20   24   30   21   22   30   19   28   20   25   19    21
  17  |   12   12   20    9    8   11    4   17    6    9   26    4 |    21   24   30   22   24   26   22   30   24   23   22    23
  18  |   10   12   20    9   13   18    5   14    8    7   16    4 |    30   33   38   31   22   37   28   39   25   36   26    28
  19  |   11   12   18    8    9   12    4   14    9   12   29    4 |    21   24   23   18   24   18   17   25   17   17   14    16
  20  |    9   12   18    7    9   15    3   16    6    9   14    4 |    33   38   35   27   25   34   30   38   29   38   35    29
  21  |   12    9   13    7    9   18    4   13    5   12   18    4 |    20   20   25   16   18   31   15   23   16   27   15    18
  22  |    9   12   19    7   10   20    3   14    6    9   13    4 |    34   36   42   36   30   47   34   46   33   44   32    35
  23  |    8   11   16    9    9   15    3   18    6   11   27    4 |    16   21   24   20   15   24   16   26   15   19   15    16
 X24  |  137   10  ---  ---  ---  ---  164  ---  ---  ---  ---    0 |  9999    1  ---  ---  ---  --- 9999  ---  ---  ---  ---     1
  25  |   12   17   29    8    8   14    5   16   10    7   19    5 |    19   24   32   22   21   29   19   32   21   23   23    21
  26  |    9   11   14    7   10   15    3    9    7   10   14    3 |    25   25   29   25   27   32   27   30   28   26   30    26
 X27  |   15   12   16   12   14  ---    9   13   11  ---  ---    5 |    22   25   29   21   26  ---   23   31   27  ---  ---    23
  28  |   12   11   22    8   14   12    3   16    7    7   15    4 |    20   21   31   24   26   33   22   29   24   25   20    24
  29  |   15   16   18    6   10   11    4   18    7    8   33    4 |    19   22   26   16   20   20   17   28   18   23   17    18
  30  |   10   12   14    6   10   11    3   11    6   12   16    3 |    25   28   29   26   25   32   24   31   24   33   25    25
  31  |    9   14   20    7   14   18    4   19    7    9   21    4 |    21   18   26   21   24   36   17   27   19   27   15    20
  32  |   13   11   17    9   11   14    4   13    6    8   23    4 |    26   33   34   29   31   28   29   35   31   33   40    30
------+-------------------------------------------------------------+--------------------------------------------------------------
 RMS  |   12   12   19    8   11   15    4   15    7   10   21      |T   27   29   33   27   28   34   27   35   27   32   28    26
 WRMS |   11   12   19    8   11   14    4   15    7    9   20      |NE  25   27   31   25   26   32   24   32   25   30   26    24
 MEDI |   11   12   18    8   11   14    4   14    7    9   19      |MD  23   25   29   24   24   30   23   31   25   27   25    23

Table 3.1709.3   GPS week: 1709   Day: 3   MJD: 56210.000                            

        Weighted Average                                                 Orbit Dynamics (7 days)
 PRN  |  cod  cof  emr  esa  gfz  grg  igr  jpl  mit  ngs  sio  IGS |   cod  cof  emr  esa  gfz  grg  igr  jpl  mit  ngs  sio   IGS
------+-------------------------------------------------------------+--------------------------------------------------------------
   1  |   15   16   21   10   12   13    5   13    6   10   17    4 |    24   23   22   19   21   29   22   24   22   22   19    19
   2  |   11   11   18    7   12   15    4   18    7    9   26    4 |    13   16   21   14   14   18   14   19   14   18   27    11
   3  |   12   13   16    5   11   14    3   11    8    7   21    3 |    22   24   28   21   25   27   23   26   20   22   27    20
   4  |    9   13   14    6    7   12    3   10    4    8   26    3 |    33   33   35   32   31   33   32   36   32   34   35    31
   5  |   14    8   17    6    9   17    4   21    7   10   13    4 |    21   20   34   25   23   33   26   33   28   34   27    27
   6  |   11   12   15    6   11   11    2   10    6    7   21    3 |    35   36   39   33   36   39   34   36   31   35   38    33
   7  |   10   15   16    7   13   15    4   15    6    9   13    4 |    23   27   28   23   23   32   23   27   22   28   20    22
   8  |   27   17   31    8   14   17    7   19    8   13   27    5 |   125  130  132  126  129  126  121  131  122  130  127   126
   9  |   15   12   14    8   11   12    8   13    6   10   17    3 |    19   24   23   21   22   24   24   25   21   26   18    20
  10  |    8   12   16    5   11   15    4   12    5    8   29    3 |    53   52   60   53   54   56   53   59   54   59   65    55
  11  |   12   12   14    8   13   15    5   10    5   10   14    4 |    22   23   26   23   26   29   21   25   19   15   21    19
  12  |   13   12   20    7    9   17    6   18    7   10   16    4 |    21   27   33   27   26   28   27   32   27   33   28    26
  13  |    9   13   15    6    9   19    4   13    5   10   21    4 |    24   26   36   32   30   39   29   35   28   32   22    29
  14  |   10   12   15    5   12   13    3   13    4    7   13    3 |    25   26   34   30   28   37   28   34   27   30   24    28
  15  |   15   11   20    8   13   13    5   19    6    8   29    4 |    23   25   30   26   26   31   24   28   26   30   31    25
  16  |   14   15   21    7   15   15    4   20    7   10   17    4 |    26   29   33   26   27   32   24   31   25   26   23    25
  17  |   15   10   19    6   13   12    4   17    6   10   26    4 |    22   24   30   26   27   27   24   31   24   31   24    24
  18  |   11   11   15    6   11   18    4   12    5    8   12    3 |    33   37   40   34   29   40   32   39   33   35   35    34
  19  |   12   13   18    8    9   10    2   14    7    9   26    4 |    19   21   24   18   23   20   18   23   17   16   16    16
  20  |   11   13   15   10   10   15    5   15    8   10   15    4 |    28   31   35   25   29   32   28   33   27   36   35    28
  21  |   14    8   14    6   10   16    4   14    7   13   18    4 |    12   15   24   15   18   27   13   18   13   23   17    14
  22  |   11   11   16    5   14   17    3   12    7    8   11    4 |    25   28   37   30   22   41   27   38   27   33   29    28
  23  |   12   12   16    9    9   15    5   16    5   12   25    4 |    23   24   30   27   25   30   25   31   24   26   20    24
 X24  |  258   12  ---  ---  ---  ---  117  ---  ---  ---  ---    0 |  9999    1  ---  ---  ---  --- 9999  ---  ---  ---  ---     1
  25  |   10   16   28    7   11   13    5   13    6    9   12    4 |    25   28   32   24   22   30   23   32   23   26   26    23
  26  |   10   12   12    7   12   12    4   12    6   11   16    3 |    26   27   26   25   30   30   27   27   28   27   26    26
 X27  |   20   12   16   12   13  ---   10   18   10  ---  ---    5 |    18   23   24   28   19  ---   19   26   18  ---  ---    18
  28  |   12    8   18    6   18   13    3   15    5   11   15    4 |    21   24   33   28   31   37   28   33   27   29   26    27
  29  |   16   17   17    6   10   12    5   17    4   11   32    4 |    21   26   30   22   25   22   22   27   23   26   22    21
  30  |   16   15   15    6   12   14    3   11    4   10   16    3 |    39   39   42   40   34   40   38   39   38   38   39    38
  31  |   14   12   21    6   11   19    6   18    5    9   14    4 |    22   19   28   19   22   33   20   26   16   23   20    19
  32  |   14   14   16    7    9   16    5   13    7    7   23    4 |    47   51   52   49   49   52   49   51   48   49   56    48
------+-------------------------------------------------------------+--------------------------------------------------------------
 RMS  |   13   13   18    7   12   15    4   15    6   10   20      |T   28   29   35   30   30   35   29   34   29   33   31    28
 WRMS |   13   13   18    7   11   14    4   14    6    9   19      |NE  25   26   32   27   27   32   26   31   26   29   28    25
 MEDI |   12   12   16    7   11   15    4   14    6   10   17      |MD  23   26   32   26   26   32   25   31   26   29   26    25

Table 3.1709.4   GPS week: 1709   Day: 4   MJD: 56211.000                            

        Weighted Average                                                 Orbit Dynamics (7 days)
 PRN  |  cod  cof  emr  esa  gfz  grg  igr  jpl  mit  ngs  sio  IGS |   cod  cof  emr  esa  gfz  grg  igr  jpl  mit  ngs  sio   IGS
------+-------------------------------------------------------------+--------------------------------------------------------------
   1  |   10   13   19    9   18   13    5   16   12    9   16    5 |    22   21   20   22   21   25   21   29   22   20   21    20
   2  |    8   16   18   10   21   16    4   15   12    8   26    5 |    15   16   22   12   15   20    9   16   12   13   28     9
   3  |   12   16   14    8   17   14    5   12    9   11   20    4 |    14   17   20   20   24   19   17   24   18   18   24    17
   4  |    8   16   13    7   14   13    3    9    9   10   29    4 |    15   18   21   19   25   21   16   24   19   20   27    18
   5  |   13   10   16   11   17   18    6   18   12   11   15    5 |    13   18   28   23   26   29   19   30   23   27   21    23
   6  |   11   16   12    8   18   13    4   12    9   11   20    4 |    18   21   26   24   31   24   21   28   23   19   27    21
   7  |   10   13   17   10   18   14    4   20   11   11   15    5 |    14   17   25   19   16   26   14   27   15   24   12    16
   8  |   18   17   27   11   18   21    9   18   16   14   30    6 |    86   87   95   93   85   98   92   92   88   95   92    91
   9  |   14   12   15    8   20   12    7   12   12    9   18    4 |    18   21   24   22   18   24   21   23   21   25   21    19
  10  |   10   16   14    7   20   17    4   11    9   11   27    4 |    45   45   55   50   49   48   47   55   49   52   65    50
  11  |    8   13   14    7   18   17    5   12   11    9   12    4 |    16   17   21   17   19   25   17   23   18   14   17    14
  12  |   13   11   19   14   15   18    6   15   12   11   14    5 |    15   19   25   24   21   26   20   22   20   22   21    19
  13  |    8   16   14    9   20   15    4   13   13   14   19    5 |    18   19   33   26   27   36   22   31   22   26   13    25
  14  |   12   16   15    8   22   15    3   19   10    8   13    5 |    15   20   28   27   31   31   23   30   22   30   18    25
  15  |   11   13   18    9   20   14    5   19   10    6   28    5 |    17   26   27   23   24   27   20   27   20   25   25    21
  16  |   12   17   21    8   18   16    5   17   10   10   17    5 |    19   22   27   21   24   27   18   24   18   24   19    19
  17  |   12   14   19   10   19   11    6   21   11   10   28    5 |    14   21   26   24   29   22   21   28   20   25   20    21
  18  |    9   12   14    7   21   15    4   16    9   12   12    4 |    29   31   37   33   26   38   31   39   33   32   28    31
  19  |   10   17   16    7   16   11    3   13   11   11   26    4 |    17   21   23   22   18   18   19   23   18   19   18    16
  20  |    8   17   17    5   16   12    3   14   13   10   14    4 |    19   22   27   23   23   29   23   28   24   24   26    22
  21  |   10   10   13    7   18   17    5   11    9   13   20    4 |    12   14   25   17   18   30   13   20   16   20   17    15
  22  |    8   12   19    9   22   13    5   16   10   13   11    5 |    27   31   37   33   22   41   30   42   31   36   28    30
  23  |   12   17   16    8   17   14    6   16   12   10   26    5 |    14   20   27   21   23   25   17   26   17   20   12    19
 X24  |  123   47  ---  ---  ---   55   77  102  ---  ---  ---   51 |  9999    1  ---  ---  ---   41 9999   52  ---  ---  ---     1
  25  |   10   18   23    8   13   16    6   20   13   14   15    5 |    16   18   22   23   18   30   19   32   18   26   20    20
  26  |   10   11   14    8   20   14    3   11   10   11   23    4 |    32   35   34   37   33   36   37   37   35   40   36    34
 X27  |   17   18   15    9   21  ---    9   14   12  ---  ---    6 |    17   29   23   26   17  ---   20   23   20  ---  ---    19
  28  |   12   10   19    9   20   15    4   18   10   14   19    5 |    15   16   28   23   23   32   18   24   17   25   16    20
  29  |   13   16   17    8   18   13    6   15   11   13   31    5 |    19   22   27   23   21   21   18   27   19   22   14    18
  30  |   13   14   14    7   15   12    4   11   11   12   16    4 |    23   25   29   26   32   28   26   27   27   31   24    28
  31  |   10   12   18    9   16   16    5   23   12   12   16    5 |    17   19   26   19   19   26   17   27   15   25   24    17
  32  |   12   18   18    7   17   13    5   16   14   11   23    5 |    34   36   41   35   38   36   35   42   35   38   40    35
------+-------------------------------------------------------------+--------------------------------------------------------------
 RMS  |   11   14   17    8   18   15    5   16   11   11   21      |T   21   23   29   26   26   30   23   31   24   27   25    23
 WRMS |   11   14   17    8   18   15    5   15   11   10   20      |NE  19   21   27   24   24   28   21   29   22   25   23    21
 MEDI |   11   16   16    8   18   14    5   15   11   11   19      |MD  17   21   27   23   23   27   20   27   20   25   21    20

Table 3.1709.5   GPS week: 1709   Day: 5   MJD: 56212.000                            

        Weighted Average                                                 Orbit Dynamics (7 days)
 PRN  |  cod  cof  emr  esa  gfz  grg  igr  jpl  mit  ngs  sio  IGS |   cod  cof  emr  esa  gfz  grg  igr  jpl  mit  ngs  sio   IGS
------+-------------------------------------------------------------+--------------------------------------------------------------
   1  |   12   13   21    7   13   16    6   15   10   10   16    4 |    21   20   20   16   22   24   15   23   18   17   18    16
   2  |    9   13   19    5   16   14    4   19   11    9   26    4 |    17   20   22   15   18   19   14   19   14   18   31    15
   3  |   11   13   15    5   12   16    3   10    9   10   23    4 |    20   22   24   20   27   26   18   24   22   21   28    21
   4  |    8   12   13    7   10   15    4   10    9   11   30    4 |    26   28   31   27   32   30   25   30   27   28   37    28
   5  |   11    7   18    7   10   19    3   17    7   11   11    4 |    13   16   27   17   22   33   16   25   19   25   18    19
   6  |    9   11   14    6   12   15    3    9    7    8   18    3 |    35   37   38   34   39   39   32   38   35   34   40    35
   7  |   10   14   20    9   11   16    4   16   13    8   16    4 |    16   17   24   17   19   27   13   22   16   20   14    16
   8  |   15    8   29    7   13   14    6   16   11   11   28    5 |    34   38   47   37   39   42   35   43   36   36   41    36
   9  |   12   11   14    8   14   16    5   13   13    9   18    4 |    19   23   23   21   22   25   19   23   21   18   19    18
  10  |    9    9   19    6   12   14    4   13    9    9   27    4 |    42   41   52   44   44   49   43   51   45   48   60    46
  11  |    9   14   15    7   12   19    5   11   11    9   13    4 |    21   22   23   18   21   28   18   24   17   15   20    17
  12  |   12   10   20    9   14   16    7   16    9   10   15    4 |    16   22   27   23   23   24   18   25   23   24   23    21
  13  |    8   11   15    9   14   18    4   14   10   14   19    4 |    23   24   32   25   28   37   22   32   22   24   18    25
  14  |   12   13   16    7   13   21    4   15   10    7   14    4 |    17   18   29   24   24   33   20   29   21   25   20    23
  15  |   11   10   20    7   14   15    6   19    7   13   32    4 |    17   21   25   20   23   28   16   27   19   23   25    19
  16  |   14   14   18    6   13   14    5   16   10    9   22    4 |    18   20   24   18   25   27   16   22   20   22   22    19
  17  |    9   13   18    7   15   14    3   17    9   14   27    5 |    19   22   26   20   26   23   19   27   19   24   17    21
  18  |   10   12   16    5   15   20    7   15    9   11   14    4 |    25   24   32   26   23   37   22   36   25   28   25    26
  19  |   11   15   16    5    9   15    3   13    7   10   25    4 |    19   22   21   15   22   16   15   20   16   17   15    15
  20  |    8   14   19    7   11   15    5   19   10   13   12    5 |    31   31   35   27   30   35   29   34   30   34   35    30
  21  |   12   11   14    7   13   18    4   11    8   12   20    4 |    19   20   25   14   19   27   11   20   13   21   23    16
  22  |   10    9   14    6   13   18    4   14    8   10   12    4 |    20   21   30   25   21   41   21   32   23   31   22    25
  23  |   10   13   17    7   12   15    5   16    9   10   26    4 |    21   24   28   20   23   26   18   27   19   21   17    20
 X24  |   97   12  ---  ---  ---  110   44  ---  ---  ---  ---    0 |   581    1  ---  ---  ---   47 9999  ---  ---  ---  ---     1
  25  |    8   13   29    7   13   18    6   13   11   10   17    5 |    17   19   27   20   18   27   16   27   18   21   21    17
  26  |    8    9   13    6   13   16    4   10    8    9   17    3 |    20   22   24   19   27   26   19   22   22   22   22    21
 X27  |   19   12   16    8   18  ---   16   15   16  ---  ---    6 |    20   26   26   27   22  ---   17   24   21  ---  ---    20
  28  |   12   12   16    6   17   14    5   15    9    9   17    4 |    16   16   27   20   25   32   18   27   19   22   17    21
  29  |   17   14   18    9   13   13    6   16   11    9   30    4 |    23   26   27   20   22   20   19   26   20   22   17    19
  30  |    9   13   18   12   12   16    5   11   11   12   17    5 |    33   33   35   34   36   36   30   33   34   35   30    32
  31  |   10   11   22    8   14   20    3   21   13   11   15    5 |    20   19   27   17   25   33   15   25   18   24   20    18
  32  |   14   14   17    6   13   16    6   16   11    5   31    4 |    70   76   82   76   74   77   74   81   74   76   80    76
------+-------------------------------------------------------------+--------------------------------------------------------------
 RMS  |   11   12   18    7   13   16    5   15   10   10   21      |T   40   24   30   24   27   32   22   29   24   26   26    23
 WRMS |   11   12   18    7   13   16    5   15   10    9   21      |NE  41   24   29   23   26   31   21   29   23   26   26    23
 MEDI |   10   12   17    7   13   16    5   15   10   10   18      |MD  20   22   27   20   23   28   18   27   21   23   22    20

Table 3.1709.6   GPS week: 1709   Day: 6   MJD: 56213.000                            

        Weighted Average                                                 Orbit Dynamics (7 days)
 PRN  |  cod  cof  emr  esa  gfz  grg  igr  jpl  mit  ngs  sio  IGS |   cod  cof  emr  esa  gfz  grg  igr  jpl  mit  ngs  sio   IGS
------+-------------------------------------------------------------+--------------------------------------------------------------
   1  |   12   15   21    9   12   14    6   16    8   13   16    4 |    35   35   35   30   34   30   31   32   30   31   31    30
   2  |    9   10   19    7   13   13    4   18    8   13   29    4 |    13   14   23   14   14   21   10   18   13   14   32    12
   3  |   12    9   16    5    7   16    5   11    7   13   23    3 |    18   18   22   18   19   26   18   25   18   25   24    17
   4  |    9   10   12    7    7   11    4    9    8   13   34    3 |    24   26   30   29   30   28   27   32   29   29   33    29
   5  |   13   11   20    5   10   16    4   17    9   10   13    4 |    19   18   31   21   25   29   21   30   24   27   24    23
   6  |   10    8   16    7   10   12    4   10    8   12   23    3 |    29   31   32   31   28   36   29   36   30   36   30    29
   7  |    8   12   16    5   10   13    3   18    8    8   19    4 |    13   16   21   13   15   24   11   21   13   18   19    13
   8  |   16   10   16    7   11   16    5   15    9    8   26    4 |    92   94   96   94   91   95   93   92   91   95   94    93
   9  |   12    8   14    6   11   17    6   12    8   11   19    4 |    20   22   26   21   26   28   21   25   21   26   22    21
  10  |   10   10   14    6   14    9    3   11    8   11   27    3 |    40   43   49   42   43   46   43   49   44   50   58    44
  11  |    7    8   17    6   11   19    6   11    7   10   14    4 |    25   27   28   24   27   31   25   29   26   18   25    23
  12  |   12    9   22    9   12   18    6   19    9   12   17    4 |    20   25   31   27   30   27   20   26   28   30   29    26
  13  |    6    8   14    5   10   16    4   13    9   10   23    3 |    26   27   31   30   28   37   25   32   26   29   22    26
  14  |   11    9   16    5   13   19    5   14    7   11   15    4 |    21   26   33   30   32   36   26   30   27   30   25    29
  15  |   10   10   20    7   11   13    4   18    8   10   30    4 |    21   24   28   25   24   32   21   25   21   25   31    22
  16  |   12   14   21    6    8   14    4   16    7    9   27    4 |    24   26   32   21   25   31   20   26   21   27   30    23
  17  |   15   11   21    7   12   12    4   18    9    9   27    4 |    24   26   32   28   34   32   27   33   28   31   28    29
  18  |    8   11   14    6   12   18    3   16    5   15   15    4 |    36   40   37   36   27   36   32   42   32   39   33    33
  19  |   11   11   17    6    9   14    5   14    7   17   29    4 |    27   29   32   24   31   22   23   27   26   21   30    24
  20  |    7   10   18    7    9   12    4   16    8    9   19    4 |    36   40   39   38   32   35   36   42   37   40   38    35
  21  |   12    9   15    7   10   18    5   25    6   14   20    4 |    21   23   26   18   21   28   14   28   17   23   24    18
  22  |    9    8   18    7   10   16    5   12    6    8   13    3 |    29   32   36   31   23   41   27   39   28   36   29    29
  23  |   11   11   18    8   12   15    4   15    8   13   28    4 |    18   23   25   21   23   24   19   25   18   23   17    19
 X24  |   77   33  ---  ---  ---   58   63  ---  ---  ---  ---   44 |   860    1  ---  ---  ---   50 9999  ---  ---  ---  ---     1
  25  |   10    9   28    6   12   18    7   15   10   14   21    5 |    23   27   32   27   28   31   24   30   27   30   29    27
  26  |    7    9   13    5   13   13    4    9    7   11   16    3 |    17   17   18   19   18   27   17   17   17   23   22    17
 X27  |   18   15   17    7   14 7142    8   14   10  ---  ---    5 |    20   23   28   21   21 9999   19   23   22  ---  ---    19
  28  |   13    7   19    5   12   16    4   13    7    6   17    3 |    20   22   30   26   32   34   24   28   26   28   26    27
  29  |   14   15   19    8   14   13    3   18    8   13   34    4 |    28   31   33   27   30   27   25   32   27   28   26    26
  30  |   11   11   14    5   10   13    5   12    9   12   23    3 |    31   29   32   26   29   33   27   32   26   34   28    27
  31  |   14   11   29    7   14   20    4   19    7   10   15    5 |    24   24   33   21   27   37   20   27   21   29   22    22
  32  |   17    9   20    7   10   13    6   14   10   10   23    4 |    48   50   56   51   53   53   53   60   52   54   64    52
------+-------------------------------------------------------------+--------------------------------------------------------------
 RMS  |   11   10   18    6   11   15    5   15    8   11   23      |T   53   28   33   28   29   34   26   32   27   31   31    27
 WRMS |   11   10   18    6   11   15    5   15    7   10   23      |NE  51   26   31   26   27   32   24   30   25   29   29    24
 MEDI |   11   10   17    7   11   15    4   15    8   11   21      |MD  24   26   32   26   28   31   24   30   26   29   28    26



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 4.1709   GPS week: 1709   MJD: 56207.0-56213.0

CENT| CLK EPO  |        BRUX       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3034 |U    6     5    15 |U    8    11    34 |U    8    13    21 |
cof | cof 3034 |U    6     5    14 |U    8    11    34 |U    8    13    20 |
emr | emr 2957 |     7     6    20 |U   10    11    39 |    10    17    20 |
esa | esa 2976 |     6     5    14 |U    8    15    50 |     8    12    19 |
gfz | gfz 2972 |U    6     5    15 |U    7     9    35 |U    8    12    19 |
grg | grg 2933 |U    9     9    23 |U    8    14    38 |     9    10    24 |
igr | igr 2973 |     6     5    14 |     7    11    35 |     8    12    20 |
igs | igs 2975 |     6     5    14 |     7    10    36 |     8    12    19 |
jpl | jpl 2985 |     7     7    19 |U   10    12    33 |    10    14    22 |
mit | mit 2976 |     6     5    15 |U   11    15    32 |U    9    12    22 |



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 5.1709.0   GPS week: 1709   Day: 0   MJD: 56207.0

CENT| CLK EPO  |        BRUX       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 2966 |     4     4    13 |     5     8    20 |     8     6    13 |
cof | cof 2966 |     4     4    13 |     5     7    21 |     8     7    14 |
emr | emr 2972 |     6     5    18 |     6     6    22 |     9    10    13 |
esa | esa 2976 |     4     4    13 |     5     8    22 |     8     7    15 |
gfz | gfz 2971 |     4     4    13 |     6     6    21 |     8     6    14 |
grg | grg 2976 |    10    20    37 |     8     9    24 |    11     7    22 |
igr | igr 2976 |     4     4    13 |     5     6    21 |     9     6    13 |
igs | igs 2976 |     4     4    12 |     5     6    21 |     8     7    14 |
jpl | jpl 2972 |     4     6    16 |     9    15    35 |     9     9    16 |
mit | mit 2976 |     5     3    11 |     5     8    23 |     9     9    16 |

Table 5.1709.1   GPS week: 1709   Day: 1   MJD: 56208.0

CENT| CLK EPO  |        BRUX       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 2987 |     7     5    16 |     7    15    25 |     6     6    19 |
cof | cof 2987 |     6     5    15 |     7    15    26 |     6     7    19 |
emr | emr 2974 |     8     6    23 |     8    13    30 |     8     9    19 |
esa | esa 2976 |     6     6    17 |     6    14    24 |     7     7    18 |
gfz | gfz 2971 |     6     6    17 |     6    13    23 |     7     5    16 |
grg | grg 2880 |    10     9    28 |     7    10    28 |     8     7    22 |
igr | igr 2976 |     6     7    17 |     6    14    23 |     7     5    17 |
igs | igs 2976 |     6     6    17 |     6    14    24 |     7     6    17 |
jpl | jpl 2974 |     7     8    23 |     7    15    29 |     9     9    21 |
mit | mit 2976 |     7     6    18 |     6    16    24 |     7     7    20 |

Table 5.1709.2   GPS week: 1709   Day: 2   MJD: 56209.0

CENT| CLK EPO  |        BRUX       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3046 |     7     4    15 |     5     9    76 |     8    10    25 |
cof | cof 3046 |     7     5    14 |     5     8    76 |     7    10    24 |
emr | emr 2976 |     8     5    18 |     7    11    80 |     9    13    20 |
esa | esa 2976 |     7     4    13 |     6    11    76 |     6     9    16 |
gfz | gfz 2972 |     7     4    13 |     6    10    79 |     6     9    16 |
grg | grg 2879 |     9     6    15 |     6    15    82 |     6     6    18 |
igr | igr 2976 |     7     5    12 |     5    11    77 |     7     9    16 |
igs | igs 2976 |     7     4    12 |     6    11    76 |     7     9    16 |
jpl | jpl 2974 |     7     5    16 |     6     8    23 |     8    10    18 |
mit | mit 2976 |     7     6    16 |     9    16    23 |     8    10    19 |

Table 5.1709.3   GPS week: 1709   Day: 3   MJD: 56210.0

CENT| CLK EPO  |        BRUX       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3047 |     8     6    19 |     8     8    26 |     6     9    17 |
cof | cof 3047 |     5     4    13 |     8     7    26 |     6     9    16 |
emr | emr 2976 |     6     6    19 |     9     9    28 |     7     8    17 |
esa | esa 2976 |     4     5    12 |     7     8    24 |     7     8    15 |
gfz | gfz 2971 |     5     4    13 |     8     7    26 |     7     8    14 |
grg | grg 2879 |     7     7    12 |     7    12    28 |     7     6    17 |
igr | igr 2972 |     5     5    14 |     7     8    26 |     8     9    18 |
igs | igs 2976 |     4     5    13 |     8     8    24 |     6     7    14 |
jpl | jpl 2976 |     5     7    15 |    10    11    31 |     9    11    22 |
mit | mit 2976 |     5     4    13 |     7     9    25 |     8     9    16 |

Table 5.1709.4   GPS week: 1709   Day: 4   MJD: 56211.0

CENT| CLK EPO  |        BRUX       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3062 |     7     8    13 |    10    12    32 |    11    25    24 |
cof | cof 3062 |     6     7    13 |    10    11    34 |    11    23    25 |
emr | emr 2852 |     9     9    21 |    12     8    39 |    17    36    25 |
esa | esa 2976 |     7     8    14 |    10    10    36 |    11    22    24 |
gfz | gfz 2975 |     6     9    15 |    10     9    36 |    11    22    24 |
grg | grg 2973 |  ----  ----  ---- |  ----  ----  ---- |  ----  ----  ---- |
igr | igr 2976 |     7     9    14 |    10     9    34 |    11    24    26 |
igs | igs 2975 |     6     8    14 |    10    10    35 |    10    24    25 |
jpl | jpl 3060 |     8    10    17 |    10    10    35 |    14    28    31 |
mit | mit 2976 |     7     8    15 |    10    12    37 |    12    22    31 |

Table 5.1709.5   GPS week: 1709   Day: 5   MJD: 56212.0

CENT| CLK EPO  |        BRUX       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3071 |     6     6    17 |    12    17    29 |     8     8    22 |
cof | cof 3071 |     6     7    18 |    12    18    27 |     8     8    21 |
emr | emr 2975 |     7     7    21 |    18    25    39 |     8     8    20 |
esa | esa 2976 |     6     6    18 |    13    43   133 |     7     7    19 |
gfz | gfz 2972 |     6     6    18 |     7    12    30 |    11    11    26 |
grg | grg 2975 |     7     6    19 |    12    23    30 |     9     8    26 |
igr | igr 2965 |     6     5    18 |    11    20    33 |     7     7    22 |
igs | igs 2973 |     6     6    19 |     7    13    36 |     7     7    21 |
jpl | jpl 2969 |     7     8    20 |    18    19    46 |     9     9    23 |
mit | mit 2976 |     6     7    19 |    29    33    59 |     6     5    25 |

Table 5.1709.6   GPS week: 1709   Day: 6   MJD: 56213.0

CENT| CLK EPO  |        BRUX       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3065 |     5     4    14 |     8     9    28 |     9    26    26 |
cof | cof 3065 |     5     4    14 |     8     9    30 |     8    25    24 |
emr | emr 2976 |     6     5    18 |    11     8    37 |    11    36    27 |
esa | esa 2976 |     5     4    14 |     8    10    34 |     8    25    23 |
gfz | gfz 2976 |     5     3    15 |     8     8    32 |     8    25    25 |
grg | grg 2975 |     9     7    26 |    10    18    39 |    11    27    40 |
igr | igr 2976 |     5     3    13 |     8     9    32 |     8    25    25 |
igs | igs 2976 |     6     4    15 |     9     9    33 |     8    25    24 |
jpl | jpl 2975 |     8     7    26 |     8     8    35 |    11    23    24 |
mit | mit 2976 |     5     4    15 |    10     9    38 |    10    21    26 |


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 6.1709   GPS week: 1709   MJD: 56207.500-56213.500

                                                         AC LOD  AC LOD
CENT  FLAG  |   Xpole   Ypole     Xrt     Yrt    LOD |    BIAS  BIAS RMS
            |   [uas]   [uas]   [uas/d] [uas/d]  [us]|    [us]    [us]
------------+----------------------------------------+------------------
cod   xxxxx |      22     -24    -138     155     -4 |       3     15
            |      22      13      81     110     12 |       2
cof   uuuxu |     -87     -49     233    -569     -2 |       6     15
            |      20      18      45     125      5 |       3
emr   uuuxu |      40     -38     226     240     -8 |      34     38
            |      16      20     100      85      9 |       5
esa   uuuxu |     -41     -28       2    -458      3 |      10     18
            |      53      28      34     113      8 |       2
gfz   uuuuu |      40      41    -115    -138      7 |      -2     14
            |      25      24      59      92      8 |       2
grg   uuuux |      30     -13     -40     127     23 |     -19     50
            |      19      16      69      64     14 |       7
igr   xxxxx |     -31      26     -57    -136      4 |      -6     15
            |      12      22      31      57     10 |       2
irf   xxxxx |      21       1     -34       3      3 |       0      9
            |      12      18      25      36      3 |       1
jpl   uuuuu |       7     -21     -20      71    -13 |      42     44
            |      19      19      59      68     10 |       4
mit   uuuuu |      39      24     -64      53     -1 |      -5     10
            |      18      22      49      87      9 |       2
ngs   uuuuu |     -12      51     -72     -89      3 |       8     15
            |      32      40      82     108      8 |       2
sio   xxxxx |       5      37      67     -45      2 |      23     27
            |      24      26      46     108      8 |       3


Table 7.1709.0   GPS week: 1709   Day: 0   MJD: 56207.500

                                                         AC LOD  AC LOD
CENT  FLAG  |   Xpole   Ypole     Xrt     Yrt    LOD |    BIAS  BIAS RMS
            |   [uas]   [uas]   [uas/d] [uas/d]  [us]|    [us]    [us]
------------+----------------------------------------+------------------
cod   xxxxx |      52     -45    -146     116     21 |       3     16
cof   uuuxu |     -60     -81     293    -606      2 |      10     20
emr   uuuxu |      61     -29      95     275      3 |      42     45
esa   uuuxu |     -56      -2      29    -532     13 |      12     20
gfz   uuuuu |      23      19     -58    -173     21 |      -3     13
grg   uuuux |       8      -1    -112     150      3 |      -7     57
igr   xxxxx |     -29       4     -72    -139     19 |      -6     15
irf   xxxxx |      21       5     -21     -19      0 |       1      8
jpl   uuuuu |       8     -40      -4     136      3 |      48     49
mit   uuuuu |      31      12     -37      31    -12 |      -1      8
ngs   uuuuu |     -12      54     -71     -84     12 |      10     16
sio   xxxxx |      -3      31      47     -39     17 |      26     31

Table 7.1709.1   GPS week: 1709   Day: 1   MJD: 56208.500

                                                         AC LOD  AC LOD
CENT  FLAG  |   Xpole   Ypole     Xrt     Yrt    LOD |    BIAS  BIAS RMS
            |   [uas]   [uas]   [uas/d] [uas/d]  [us]|    [us]    [us]
------------+----------------------------------------+------------------
cod   xxxxx |      22     -28    -195     133     -4 |       5     17
cof   uuuxu |     -73     -43     195    -547      0 |       8     18
emr   uuuxu |      16     -35      83     158    -20 |      40     43
esa   uuuxu |    -137       0       1    -519     -4 |      12     19
gfz   uuuuu |      86      28     -79      11      7 |      -2     14
grg   uuuux |      54       2    -138     141     23 |     -13     53
igr   xxxxx |     -31      24     -49    -195      3 |      -5     16
irf   xxxxx |      32     -23      -7     -10      1 |       0      7
jpl   uuuuu |       0     -32      -6      90     -8 |      47     48
mit   uuuuu |      35       6     -10      12     -2 |      -4      8
ngs   uuuuu |      24      22       9    -169      6 |       9     16
sio   xxxxx |     -19       7     128    -111     -2 |      26     30

Table 7.1709.2   GPS week: 1709   Day: 2   MJD: 56209.500

                                                         AC LOD  AC LOD
CENT  FLAG  |   Xpole   Ypole     Xrt     Yrt    LOD |    BIAS  BIAS RMS
            |   [uas]   [uas]   [uas/d] [uas/d]  [us]|    [us]    [us]
------------+----------------------------------------+------------------
cod   xxxxx |      24     -11      16     159     -3 |       5     17
cof   uuuxu |     -79     -54     253    -592      3 |       6     17
emr   uuuxu |      36     -54     323     237    -12 |      35     40
esa   uuuxu |     -19      -7      40    -445     -2 |      10     19
gfz   uuuuu |      15      22    -198     -96      1 |      -2     14
grg   uuuux |      27      -5      10     162     25 |     -19     51
igr   xxxxx |     -27      36     -16    -163     -7 |      -5     16
irf   xxxxx |      13      20     -72       3      5 |      -1      8
jpl   uuuuu |      13     -31     -74      65    -15 |      44     46
mit   uuuuu |      29      38    -136      11      4 |      -5     10
ngs   uuuuu |     -15      20      35     -67     -7 |       9     16
sio   xxxxx |      38      26     109     154     -3 |      23     28

Table 7.1709.3   GPS week: 1709   Day: 3   MJD: 56210.500

                                                         AC LOD  AC LOD
CENT  FLAG  |   Xpole   Ypole     Xrt     Yrt    LOD |    BIAS  BIAS RMS
            |   [uas]   [uas]   [uas/d] [uas/d]  [us]|    [us]    [us]
------------+----------------------------------------+------------------
cod   xxxxx |      -8     -27    -215     359    -16 |       3     16
cof   uuuxu |     -89     -24     195    -539     -1 |       4     15
emr   uuuxu |      25     -36     263     307    -10 |      33     38
esa   uuuxu |      -5     -43     -59    -341     -1 |       7     17
gfz   uuuuu |      29      45    -141    -143     -1 |      -3     14
grg   uuuux |      14     -36      17     195     41 |     -26     46
igr   xxxxx |     -25      29     -28     -23     -8 |      -7     17
irf   xxxxx |       1       0     -24     -28      6 |      -2      8
jpl   uuuuu |      -9     -26     -38     117    -19 |      41     43
mit   uuuuu |      13      45      -8     -91      6 |      -6     10
ngs   uuuuu |       7      20     -28      73     -5 |       7     15
sio   xxxxx |     -30      29      27      19     -5 |      20     24

Table 7.1709.4   GPS week: 1709   Day: 4   MJD: 56211.500

                                                         AC LOD  AC LOD
CENT  FLAG  |   Xpole   Ypole     Xrt     Yrt    LOD |    BIAS  BIAS RMS
            |   [uas]   [uas]   [uas/d] [uas/d]  [us]|    [us]    [us]
------------+----------------------------------------+------------------
cod   xxxxx |      46     -25    -206     -15     -9 |       3     16
cof   uuuxu |    -118     -54     257    -788      1 |       5     16
emr   uuuxu |      43     -54     302      93      0 |      31     36
esa   uuuxu |     -57     -36     -24    -626     12 |       8     18
gfz   uuuuu |      32      52    -183    -289      2 |      -2     15
grg   uuuux |      56     -34     -63      25     29 |     -22     47
igr   xxxxx |     -16      67    -108    -168      4 |      -7     17
irf   xxxxx |      37      16     -65     -27      3 |       0     11
jpl   uuuuu |      14      12      99     -74    -13 |      40     42
mit   uuuuu |      68      42     -92     154     -7 |      -4     12
ngs   uuuuu |      19      74    -161      14      2 |       7     16
sio   xxxxx |       8      56      94    -177      1 |      21     25

Table 7.1709.5   GPS week: 1709   Day: 5   MJD: 56212.500

                                                         AC LOD  AC LOD
CENT  FLAG  |   Xpole   Ypole     Xrt     Yrt    LOD |    BIAS  BIAS RMS
            |   [uas]   [uas]   [uas/d] [uas/d]  [us]|    [us]    [us]
------------+----------------------------------------+------------------
cod   xxxxx |       2     -25    -112     179     -3 |      -1     12
cof   uuuxu |    -110     -54     173    -547     -5 |       3     12
emr   uuuxu |      58     -56     298     287     -2 |      28     31
esa   uuuxu |      31     -29      10    -440      8 |       7     17
gfz   uuuuu |      28      34     -51    -175     15 |      -3     14
grg   uuuux |      20     -15      48     165      6 |     -21     47
igr   xxxxx |     -53      17     -70    -105     12 |      -9     15
irf   xxxxx |      20     -22     -30      33      1 |       0     11
jpl   uuuuu |     -20     -27     -52      76    -12 |      37     39
mit   uuuuu |      47     -12    -101     129     -8 |      -5     12
ngs   uuuuu |     -63     130    -118    -163      0 |       5     12
sio   xxxxx |      15      24      65     -58      7 |      20     23

Table 7.1709.6   GPS week: 1709   Day: 6   MJD: 56213.500

                                                         AC LOD  AC LOD
CENT  FLAG  |   Xpole   Ypole     Xrt     Yrt    LOD |    BIAS  BIAS RMS
            |   [uas]   [uas]   [uas/d] [uas/d]  [us]|    [us]    [us]
------------+----------------------------------------+------------------
cod   xxxxx |      17      -6    -108     155    -12 |       1     10
cof   uuuxu |     -81     -32     268    -365    -11 |       5     10
emr   uuuxu |      42       0     218     325    -18 |      29     31
esa   uuuxu |     -47     -78      17    -301     -6 |      11     16
gfz   uuuuu |      63      89     -95    -102      1 |       2     11
grg   uuuux |      33      -1     -40      49     34 |     -23     48
igr   xxxxx |     -38       6     -53    -160      4 |      -5     12
irf   xxxxx |      19      15     -19      70      8 |       1     10
jpl   uuuuu |      41       0     -66      87    -28 |      37     39
mit   uuuuu |      51      39     -59     126     12 |      -6     12
ngs   uuuuu |     -43      38    -171    -231     12 |       7     12
sio   xxxxx |      24      86      -1    -107     -2 |      23     25



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