[IGSREPORT-29910] Wk 2315 IGS Final Orbits

acc acc at igs.org
Fri Jun 7 01:00:43 UTC 2024


Author:  AC Coordinator / GA MIT 

sum-file Version 2.0
Final IGS Orbit Combination - Week 2315   (May 19, 2024 - May 25, 2024)

Contacts: acc at igs.org


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

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

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

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

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

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

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


SOFTWARE:
---------

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

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

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

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

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


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

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

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

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



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

IGS0OPSFIN_${yyyy}${doy}0000_01D_15M_ORB.SP3  IGS GPS ephemeris files in SP3
                                              format.
IGS0OPSFIN_${yyyy}${doy}0000_01D_05M_CLK.CLK  IGS GPS satellite and station
                                              clocks in clock RINEX format.
IGS0OPSFIN_${yyyy}${doy}0000_01D_01D_CLS.SUM  IGS GPS clock combination summary
                                              report.
IGS0OPSFIN_${yyyy}${doy}0000_07D_01D_ERP.ERP  Earth Rotation Parameters (ERP)
                                              and their rates as well as
                                              Universal Time (UT1-UTC) and
                                              Length Of Day (LOD) associated 
                                              with IGS ephemerides.
IGS0OPSFIN_20241400000_07D_01D_SUM.SUM        Complete report.

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

 1. The centres used in the clock combination are COD, ESA, GFZ, and GRG.
    The other centres are excluded because of either poorer consistency, or they provide
    broadcast clocks, or clock corrections are not provided (SIO). The clock
    information not used is still compared to the combination for completeness. The
    value of 999999.999999 microseconds, according to the SP3 format convention,
    signifies that no clock solution is available and therefore must not be used.
    
    In general, if an AC does not contribute to the terrestrial reference frame
    (i.e. the SINEX combination), then any corresponding orbits & clocks
    contributed from that AC should not be included with weight in this
    combination. This is done to ensure a high level of consistency between the TRF
    and the orbital frame. However, there is an exception for the clocks if the AC
    is the reference center. In that case, only the clocks from that AC are
    included with weight.
    

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

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

 4. The following clock solutions were excluded from the combination because they
    were biasing the combined clock solutions (clock shifts/outliers) but were
    kept for the RMS computation. Duplicate entries can arise due to separate
    combination runs for the 30-s clocks ACs (listed first) and the 5-min clock
    ACs (listed second).
    
               Day | Centre | PRN/STA list
               ----+--------+---------------
                0  |  COD   | AREQ FLIN FLIN
                0  |  ESA   | DAV1 STK2 STK2
                0  |  GFZ   | 21 POHN POHN
                0  |  GRG   | 12 CZTG CZTG
                0  |  MIT   | ABMF CHPI FLIN JOZE MOBS NOT1 NYA1 SFER STR1 TONG
                0  |  MIT   | TRO1 YEBE ABMF CHPI FLIN JOZE MOBS NOT1 NYA1 SFER
                0  |  MIT   | STR1 TONG TRO1 YEBE
                1  |  COD   | ADIS BRFT CZTG HRAO PIE1 SCUB SGOC WTZR ADIS CZTG
                1  |  COD   | PIE1 WTZR
                1  |  GFZ   | AREQ AREQ
                1  |  GRG   | 12 AREQ AREQ MAL2 SVTL
                1  |  JGX   | IQAL SYOG
                1  |  MIT   | BADG CHPI FLRS NOT1 NYA1 SFER STR1 TIDB TONG TOW2
                1  |  MIT   | VNDP YEBE BADG CHPI FLRS NOT1 NYA1 SFER STR1 TIDB
                1  |  MIT   | TONG TOW2 VNDP YEBE
                2  |  COD   | MATE NLIB SEYG SGOC IRKJ MATE
                2  |  EMR   | BADG BADG
                2  |  GFZ   | JFNG
                2  |  GRG   | 16 SCUB CZTG
                2  |  MIT   | AJAC CHPI GAMG NOT1 SFER STR1 WSRT YEBE AJAC CHPI
                2  |  MIT   | GAMG GRAC NOT1 SFER STR1 WSRT YEBE
                3  |  COD   | ADIS ASCG DJIG HRAO KOUR MAC1 MAYG ADIS DJIG SANT
                3  |  EMR   | BADG
                3  |  GFZ   | HRAO POHN MAC1
                3  |  GRG   | CZTG SCUB SVTL CZTG SCRZ SCUB SVTL WIND
                3  |  MIT   | NOT1 PDEL SFER STR1 VNDP YEBE FLRS NOT1 PDEL SFER
                3  |  MIT   | STR1 VNDP YEBE
                4  |  COD   | SCUB SYOG
                4  |  ESA   | SYOG THTG SEYG THTG
                4  |  GFZ   | 12 LAUT LAUT
                4  |  GRG   | 14 CZTG DAV1 CZTG DAV1 NKLG TONG
                4  |  JGX   | NTUS NTUS
                4  |  MIT   | GMSD METG NOT1 SFER STJ3 STR1 TLSE TONG VNDP YEBE
                4  |  MIT   | GMSD METG NOT1 SFER STJ3 STR1 TLSE TONG VNDP YEBE
                5  |  COD   | ASCG CHTI CPVG NLIB SCUB SVTL AREQ CHTI NLIB
                5  |  ESA   | AREQ JFNG
                5  |  GFZ   | LAUT NLIB LAUT NLIB
                5  |  GRG   | 22 CZTG CZTG SCUB SVTL
                5  |  JGX   | HERS
                5  |  MIT   | CHTI CRO1 MEDI NOT1 SFER STR1 TLSE TONG TOW2 TRO1
                5  |  MIT   | VNDP YEBE CHTI CRO1 MEDI SFER STR1 TLSE TONG TOW2
                5  |  MIT   | TRO1 VNDP YEBE
                6  |  COD   | AREQ ASCG SGOC AREQ
                6  |  ESA   | AREQ AREQ
                6  |  GFZ   | PTVL
                6  |  GRG   | CZTG CZTG SVTL
                6  |  MIT   | 7 7 BADG FLRS IRKJ JOZE NOT1 REYK SFER TLSE TONG
                6  |  MIT   | YEBE BADG FLRS IRKJ JOZE NOT1 PTVL REYK SFER TLSE
                6  |  MIT   | TONG YEBE

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

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

 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.
    
    Starting 29-Jan-2017 (GPS Week 1934, day 0, MJD 57782) all IGS products,
    are based on the IGS realization of the ITRF2014 reference frame (IGS14).
    For more information see IGSMAIL #7399.
    
    Starting 17-May-2020 (GPS Week 2106, day 0, MJD 58986) all IGS products,
    are based on the updated reference frame (IGb14).
    For more information see IGSMAIL #7921.
    
    Starting 28-Nov-2022, all IGS products, are based on the IGS realization of
    the ITRF2020 reference frame (IGS20). Starting from the same date, the IGS
    products are based on the repro3 standards, including long filename formats.
    For more information see IGSMAIL #8238, #8256, #8274 and #8282.
    

 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 RX, RY and RZ rotations
    were estimated in the IGS SINEX combination process, performed by the IGS
    Reference Frame Coordinator at the Institut Geographique National (IGN).
    Starting on 19-Aug-2012 (GPS Week 1702; MJD=56158), ACs began contributing
    products based on 1d SINEX integrations. As a result, the SINEX combinations
    are now done daily instead of weekly, and the associated daily rotations are
    applied here to the orbits and ERPs. The estimated 7 transformations, from
    which only the 3 rotations are applied to the orbit and ERP values, are:
    
            |     |    DX     DY     DZ      RX     RY     RZ     SCL
     Centre | Day |   [mm]   [mm]   [mm]   [uas]  [uas]  [uas]   [ppb]
     -------+-----+---------------------------------------------------
       COD  |   0 |     .1    -.6     .7     -13     -6     -7    -.10
       EMR  |   0 |    3.8   -9.4   -4.3      -9     12    -12     .11
       ESA  |   0 |     .0     .5    1.1     -16      6      2    -.46
       GFZ  |   0 |     .2    -.2    -.5       3      5    -15     .27
       GRG  |   0 |    -.5     .5     .4      22     -2     11    -.01
       JGX  |   0 |   -1.5   -4.8     .7      -9     -6      4     .13
       JPL  |   0 |   -3.9   -8.8   -2.1      17     47    -33     .37
       MIT  |   0 |   -3.0   -3.0   13.3       9      1      6     .08
       NGS  |   0 |     .2   -3.3   17.1     -55     51     -6    -.04
       SIO  |   0 |   -6.4   -1.2     .6      25    119     26     .08

       COD  |   1 |     .2    -.2     .6      -7     -6    -10    -.05
       EMR  |   1 |    1.3     .3   -3.4       8    -19     27     .32
       ESA  |   1 |     .3     .1    1.0     -10      8      2    -.47
       GFZ  |   1 |     .7     .0    -.8     -15     -6     19     .43
       GRG  |   1 |     .3    -.5    -.1      16     -9     -3     .14
       JGX  |   1 |     .0     .5    -.3      11    -11     23     .18
       JPL  |   1 |   -3.2   -3.9   -5.8       0     43    -35     .50
       MIT  |   1 |   -5.4     .8   12.7     -47    -23      9     .18
       NGS  |   1 |   -1.0    2.9   10.6     -31     43    -50     .11
       SIO  |   1 |   -5.4    2.2   -1.4     -21    114    -16     .12

       COD  |   2 |     .1     .1     .6     -11     -6    -17    -.04
       EMR  |   2 |    7.6   -2.7    -.9       5      2     18    -.23
       ESA  |   2 |     .2     .3     .1       4    -21      9    -.47
       GFZ  |   2 |     .1    -.1    -.2     -19    -29      8     .42
       GRG  |   2 |    1.1    -.6     .1      -4    -22     18    -.01
       JGX  |   2 |    1.3    -.7   -5.6      33    -36     29     .15
       JPL  |   2 |     .8   -4.1   -2.9      10     34    -28     .66
       MIT  |   2 |    1.1   -1.4   11.3     -26    -18      5     .49
       NGS  |   2 |    4.7     .6     .2       3     22     -7     .13
       SIO  |   2 |   -3.1    2.7   -2.5      41     -2     -8     .54

       COD  |   3 |     .1    -.2     .2     -10     -5    -10    -.08
       EMR  |   3 |    8.2   -3.5    1.8       2    -20     21    -.21
       ESA  |   3 |     .1    -.0     .6     -16     -4      1    -.53
       GFZ  |   3 |     .2    -.8    -.8     -19    -17     18     .38
       GRG  |   3 |     .7    -.4     .3      -7    -11     23     .02
       JGX  |   3 |     .0   -2.5    2.9       9      1     17     .10
       JPL  |   3 |     .1   -3.2   -8.6      15     40    -28     .50
       MIT  |   3 |     .0   -2.6   11.4     -32    -12      3     .34
       NGS  |   3 |    1.0   -1.6    9.9     -33     42    -31    -.01
       SIO  |   3 |     .8    -.3   -1.5     -15     16    -46     .25

       COD  |   4 |    -.4    -.2     .4     -13     -2      1    -.18
       EMR  |   4 |    6.0   -6.0   -2.3       9      7     11     .01
       ESA  |   4 |    -.3     .1     .9     -11     -2     16    -.57
       GFZ  |   4 |     .2    -.4    -.3     -27     -2     11     .11
       GRG  |   4 |     .1    -.6    -.2      -3     -9     29    -.14
       JGX  |   4 |     .5   -4.9     .7       7    -19     49    -.00
       JPL  |   4 |   -5.3   -5.0  -12.4       5     55    -43     .52
       MIT  |   4 |   -2.1   -2.9   11.2     -22     -3      9     .02
       NGS  |   4 |   -1.9    -.5    3.8     -21     37    -15    -.31
       SIO  |   4 |   -5.5    2.3   -3.3      35    103    -19    -.04

       COD  |   5 |    -.4    -.8     .3      -9     -7      5    -.20
       EMR  |   5 |   12.1   -5.8    -.8     -15      7    -17     .10
       ESA  |   5 |    -.0     .5     .7      -7     -4     15    -.52
       GFZ  |   5 |     .2    -.3    -.2     -23      1     24     .10
       GRG  |   5 |    -.2     .6     .2      13     -2      1    -.21
       JGX  |   5 |    1.1   -3.8    -.8      10    -15     49    -.10
       JPL  |   5 |   -4.7   -4.7   -6.1      11     18    -39     .56
       MIT  |   5 |    -.8   -1.2   10.9     -23    -14     24    -.03
       NGS  |   5 |     .0   -4.0    3.6     -31     28    -10    -.06
       SIO  |   5 |   -4.1    3.3    -.2      44     29     32     .03

       COD  |   6 |    -.3    -.6     .0     -12      2     -3    -.26
       EMR  |   6 |   12.6   -2.5    1.5      13      9    -10     .00
       ESA  |   6 |    -.1     .1    1.5      -6     -6      5    -.60
       GFZ  |   6 |     .3     .3    -.2     -12    -13     -4     .17
       GRG  |   6 |     .1     .3     .3      14      0     17    -.10
       JGX  |   6 |    5.8   -4.0     .3       8    -16     47    -.11
       JPL  |   6 |    9.8   -7.7   -7.6      -3     39    -60     .62
       MIT  |   6 |    4.1   -2.1   11.7     -12      1     12     .06
       NGS  |   6 |    3.4    1.1    3.2      -2     23    -25    -.14
       SIO  |   6 |    4.1    3.4   -9.0      11    -55      5    -.06


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

10. Starting 5-Nov-2006 (GPS Week 1400, day 0, MJD 54044) until 16-Apr-2011 (GPS
    Week 1631, day 6, MJD 55667) the absolute antenna model is introduced (IGSMAIL
    #5438). The antenna phase center offsets and phase center variations are given
    in the file:
        https://files.igs.org/pub/station/general/igs05.atx
    These antenna calibrations are also used in the homogeneously reprocessed IGS
    products from GPS Weeks 730 to 1459 (1994-2007); see IGSMAIL #6136.
    
    Starting 17-Apr-2011 (GPS Week 1632, day 0, MJD 55668) the absolute antenna
    model is updated (IGSMAIL #6255 & #6374) as given in the file:
        https://files.igs.org/pub/station/general/igs08.atx
    
    The JPL solution did not use IGS08/igs08.atx until GPS Week 1649, which caused
    their RMS clock residuals to be higher during that period than for the other
    centres; from GPS Week 1632 through 1648 the JPL solution is excluded from the
    weekly SINEX combination.
    
    Starting 29-Jan-2017 (GPS Week 1934, day 0, MJD 57782) the absolute antenna
    model file has been updated to igs14.atx to be consistent with IGS14.
    See IGSMAIL #7399 for more information
        https://files.igs.org/pub/station/general/igs14.atx
    
    Starting 28-Nov-2022, the absolute antenna model file has been updated to
    igs20.atx to be consistent with IGS20.
    See IGSMAIL #8238 and #8256 for more information
        https://files.igs.org/pub/station/general/igs20.atx
    
    The JPL final solution has not yet adopted IGS20/igs20.atx after GPS Week 2238, 
    which causes their orbit and clock residuals to be higher than for the other
    centres; from GPS Week 2238 and until they switch to IGS20/igs20.atx, the JPL
    solution is excluded from the weekly SINEX combination, as well as from orbit
    and clock combinations.
    


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

Most combination statistics are with respect to the combined orbits and
consist of seven parts. The first, Table 1, summarizes all statistics for
the week. It contains means and standard deviations over the week of
satellite ephemeris and clock correction transformation parameters for
each centre (Table 1.2315.a). It also displays the computed satellite
position sigmas for the combined orbits (Table 1.2315.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 2.2315.[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 3.2315.[0-6]). The first type of satellite RMS is
based on orbit combination and the second RMS type is a result of the 7-day
arc evaluation of each centre ephemerides. The fourth part, Table 4, is a
weekly summary of the daily precise navigation summaries for centres
providing both orbit and clock solutions. It contains weekly station RMS
w.r.t. the initial coordinates for the Latitude, Longitude and Height 
components for up to three IGS stations (Table 4.1307). The fifth part, 
Table 5, is similar to Table 4 and contains daily precise navigation
statistics (Tables 5.2315.0-6). The sixth part, Table 6, is a weekly
summary of daily ERP combination statistics. The seventh part, Table 7,
contains the daily ERP statistics. But this is not the IGS official ERP
combination products (which come from the accompanying SINEX combination)
but provided to check combination consistency, etc.

In Tables 1-3, the most important statistic which is meaningful for intra
centre/satellite analysis is labeled WRMS. It is a weighted RMS where
normalized weights are based on accuracy codes given in the SP3 files, and
should not be affected by downweighted/problem satellites when acknowledged
by individual centres in their SP3 file.
                                                                               

             
Table 1: Week 2315 summary.                       (May 19, 2024 - May 25, 2024)

Table 1.2315.a   GPS week: 2315   MJD: 60449.000-60455.000

         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  815|    0     0    -1     1    13    22  -.03    7    7 |    -805     249      5     93
        |    0     0     0    10    10    17   .02           |      61     105
emr   97|    0     0     4     4     5    29   .03   11   10 |   -1540    -137     53    108
        |    0     0     1     8    14    15   .02           |     191     311
esa  150|    0     0     3     1     3    -6  -.04    9    9 |   -1692    1312      5     79
        |    0     0     1     7    13     9   .01           |     413     376
gfz  120|    0    -1     2    24     1   -30   .07    9    9 |    -112      87      9     98
        |    0     0     1    16    12    11   .02           |      67     134
grg  122|    1    -1     1    15    14    20   .06    9    8 |     -16      19      7    128
        |    0     0     0     8    13    13   .02           |      72     120
igr  n/a|    0     0     0    12    13    -7   .01    4    4 |   -2918     710      9     74
        |    0     0     0     9     7     8   .00           |    1622     415
jgx  n/a|    0     0    -1    36    15   -27  -.03   10   10 |     -31      48     28    104
        |    0     0     0    16     9    15   .01           |      70     105
jpl  n/a|   -2     0     0    32    -9    13   .16   26   26 |   -1144      43     84    167
        |    1     0     1     8    20    11   .02           |     562     586
mit  363|    0     0    -6   -24   -30    25   .01    7    7 |     733   -6619     41     72
        |    0     0     1    29    26    42   .01           |    1707     488
ngs  286|    0     0     5     0     8    -5  -.08   11   10 |    2781  -12238    492    706
        |    0     0     3    23    22    10   .02           |    9533   33095
sio  351|    0     1    -2   -31   -22   -33  -.00    8    7 |     ---     ---    ---    ---
        |    0     0     1    11    12    32   .01           |     ---     ---


Table 1.2315.b   GPS week : 2315   MJD: 60449.000-60455.000   

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



Table 2: Daily transformation of each centre to the combined IGS orbit and
         clocks for each day of the week. The transformation displayed is the
         result of the combination after the AC orbits were pre-aligned using
         the SINEX rotations from above. Prior to Wk 1702, AC ERP rotations
         used in the pre-alignment were also displayed.
         WRMS - RMS weighted by the centres SP3 header accuracy codes.
         STA  - Number of stations in the daily solutions.
   
Table 2.2315.0   GPS week: 2315   Day: 0   MJD: 60449.000                            

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  819|    0     0    -2    -1    20    18  -.02    7    7 |    -801     206      5     91
emr  101|    1     0     2    -4    11    19   .03   10   10 |   -1649     137     57    120
esa  150|    0     0     2   -12    16   -10  -.05    9    8 |   -1819    1325      6     80
gfz  122|    0    -1     2    25    -3   -47   .06    8    8 |    -147      59      9     95
grg  120|    1     0     0     5     9    43   .03    9    9 |      17    -120      7    137
igr  n/a|    0     0     0     0     6    -3   .01    4    3 |   -5493    1002      9     75
jgx  n/a|    0     0    -2    16    18   -16  -.01    9    9 |      -4     -69     27    108
jpl  n/a|   -2     0     0    36    -9    24   .15   26   26 |   -2045     822     82    162
mit  363|   -1     1    -8    38   -45     0  -.00    8    8 |   -1902   -6205     47     80
ngs  291|    0     0    12   -21    -9     0  -.08    9    9 |    -801     202    450    704
sio  347|    0     0    -4   -35   -12     3   .01    8    8 |     ---     ---    ---    ---

Table 2.2315.1   GPS week: 2315   Day: 1   MJD: 60450.000                            

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  818|    0     0    -1    10    -3    14  -.00    7    6 |    -877     433      5     89
emr  102|    0     1     4     9    20    27   .03   10   10 |   -1802     344     38    110
esa  150|    0     0     3     4    12   -11  -.05    9    9 |   -2383    1952      5     77
gfz  122|    0    -1     2    33    -9   -36   .09    8    8 |     -45      46      9    108
grg  124|    1     0     1    24    16     6   .04    8    8 |    -112     213      7    126
igr  n/a|    0     0     1    20    20     0   .00    4    4 |   -4347    1336     10     72
jgx  n/a|    0     0     0    62    21   -20  -.02   10   10 |    -142     247     27    101
jpl  n/a|   -2    -1     2    43    -8    29   .16   26   26 |   -1141     925     89    177
mit  363|    0     0    -6   -44   -55    59   .01    7    7 |    -719   -5944     43     72
ngs  286|    1     0     6   -25    52   -17  -.07   10    9 |    -875     428    557    706
sio  359|    0     2    -3   -49   -15   -27   .00    7    6 |     ---     ---    ---    ---

Table 2.2315.2   GPS week: 2315   Day: 2   MJD: 60451.000                            

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  816|   -1     0    -1     0    21     0  -.04    7    7 |    -755     190      6    100
emr   98|    0     0     5     6    23    49   .01   10   10 |   -1254    -379     49     91
esa  150|    0     0     3     9   -16    -9  -.03    9    9 |   -1185    1376      5     74
gfz  120|    0    -1     3    33    -6   -31   .08    9    9 |    -141     212      9     88
grg  124|    0    -1     0    15     1    21   .06    8    8 |     106      77      7    145
igr  n/a|    0     0     0     8    20   -13   .00    4    4 |   -2983     103      9     73
jgx  n/a|    0     1    -1    51     3   -45  -.03   11   11 |      87      84     29    102
jpl  n/a|   -5     0     1    42     0    23   .14   26   26 |    -175    -574     83    158
mit  363|    0     0    -5   -39    -7    53   .00    7    7 |     463   -6813     44     75
ngs  290|    1     0     0   -21    21   -17  -.05   11   10 |    -758     184    499    680
sio  353|    0     0    -1   -22   -26   -25  -.01    8    6 |     ---     ---    ---    ---

Table 2.2315.3   GPS week: 2315   Day: 3   MJD: 60452.000                            

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  816|   -1     0    -1    12    19    20  -.04    7    7 |    -772     222      5     92
emr   96|    0     0     6     5     8     7   .04   11   11 |   -1511    -208     51     95
esa  150|    0     0     1    -4     0   -21  -.02    9    9 |   -1297     733      6     85
gfz  120|    0     0     2    -2   -11   -11   .09    9    9 |    -194     206      8     95
grg  126|    2    -1     1    17    19     9   .07    9    9 |       1     -39      7    115
igr  n/a|    0     0     0     1    11     1   .01    4    4 |   -2978     540     10     62
jgx  n/a|    1     0     0    31    11   -48  -.04   11   11 |      -2     -32     28     99
jpl  n/a|   -1     0     0    22   -11     8   .18   26   26 |    -860    -206     86    162
mit  363|    0     0    -7   -16   -23    79   .03    7    7 |     700   -6841     42     68
ngs  290|    0     0     8     0   -14    -8  -.06   11   10 |    -775     218    485    666
sio  359|    0     0    -2   -29   -16   -77  -.01    8    8 |     ---     ---    ---    ---

Table 2.2315.4   GPS week: 2315   Day: 4   MJD: 60453.000                            

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  810|    0     0    -1    -7     1    24  -.04    7    7 |    -836     272      6     99
emr   94|    0     0     2    -8   -11    50   .04   11   11 |   -1333    -596     50     98
esa  150|   -1     0     4     7    19     7  -.03    9    9 |   -1643    1339      5     75
gfz  122|    0    -1     4     7    23   -28   .03   10   10 |       3    -174      9    119
grg  123|    1     0     2    25    40    15   .06    9    9 |     -23     -93      7    125
igr  n/a|    0     0     0     9    23    -1   .00    4    4 |   -2461     978     10     70
jgx  n/a|    0     0    -2    32    29   -36  -.02   11   11 |     -57     -11     30    107
jpl  n/a|    0     0    -1    33    26     0   .19   26   26 |   -1155    -364     83    164
mit  363|    0     1    -7   -32   -69    15   .03    7    7 |    1248   -6467     44     74
ngs  284|    0     0     6    31     7     0  -.10   12   10 |    -841     277    479    760
sio  351|    0     0    -3   -17   -18   -66  -.00    8    7 |     ---     ---    ---    ---

Table 2.2315.5   GPS week: 2315   Day: 5   MJD: 60454.000                            

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  812|    0     0    -2   -15    12    58  -.01    8    8 |    -879     319      5     90
emr   99|    0     0     5    10     4    22   .02   11   11 |   -1595    -135     64    112
esa  150|    0     0     5    -2    -5     1  -.06    9    9 |   -1529    1023      5     80
gfz  121|    0     0     2    42    12   -21   .07    9    9 |    -114      83     11     94
grg  120|    1    -1     0     5     4    15   .08    9    8 |     -95     116      8    127
igr  n/a|    0     0     0    17     5   -16   .01    4    4 |   -1383     452     10     88
jgx  n/a|    0     0    -1    39     3   -20  -.03   10   10 |     -69      93     28    103
jpl  n/a|   -1    -1     2    23   -35     4   .15   26   26 |   -1262    -162     84    177
mit  363|    0     1    -5   -33   -16   -47   .01    7    7 |    2135   -6609     39     69
ngs  281|    1    -1     3    22     1     0  -.10   11    9 |    -879     315    472    707
sio  346|    0     1    -2   -26   -18     5  -.02    9    8 |     ---     ---    ---    ---

Table 2.2315.6   GPS week: 2315   Day: 6   MJD: 60455.000                            

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  814|   -1     0    -1    11    21    21  -.03    7    7 |    -719     103      5     90
emr   94|    0     0     6    12   -15    29   .00   11   11 |   -1642    -127     67    136
esa  150|    0     0     4     4     0    -1  -.05    9   10 |   -1994    1439      5     82
gfz  119|    0    -1     0    30     4   -36   .05    9    9 |    -146     180      8     87
grg  120|    1    -1     0    16     7    31   .06    8    8 |      -6     -19      7    122
igr  n/a|    0     0     0    27     9   -19   .01    3    3 |    -784     564     10     83
jgx  n/a|    0     0    -1    21    21    -6  -.05   10   10 |     -36      28     28    109
jpl  n/a|    0    -1     2    27   -28     4   .13   27   27 |   -1376    -136     87    174
mit  363|    0     0    -4   -44     2    13   .01    7    6 |    3211   -7454     33     68
ngs  282|    0     0     4    14     0     9  -.07   12   10 |   24401  -87291    502    720
sio  345|    0     1     0   -41   -48   -48   .01    8    7 |     ---     ---    ---    ---

       
       
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 3.2315.0   GPS week: 2315   Day: 0   MJD: 60449.000                            

        Weighted Average                                                 Orbit Dynamics (7 days)
 PRN  |  cod  emr  esa  gfz  grg  igr  jgx  jpl  mit  ngs  sio  IGS |   cod  emr  esa  gfz  grg  igr  jgx  jpl  mit  ngs  sio   IGS
------+-------------------------------------------------------------+--------------------------------------------------------------
  X1E |   12  ---  ---  ---    6    7  ---  ---   14  ---  ---    8 |    48  ---  ---  ---   43   45  ---  ---   49  ---  ---    46
   2  |   12    7    6   10    7    4    7    9   12    9   10    3 |    34   31   31   34   31   32   32   33   32   33   33    31
   3E |    9   13    9    6   13    6    6   13   10   10    9    3 |    64   65   66   66   65   65   61   68   63   67   65    64
   4  |    6   15    3    7    8    3    7   49    4    8    6    2 |    48   46   46   46   46   47   46   61   43   46   43    45
   5E |    5    9    8   13   11    5   11   10    7   12   14    3 |    40   38   42   41   42   39   44   41   42   46   45    41
   6  |    5    8    8    7    6    4    6    9   10    7    4    2 |    38   38   40   38   39   37   36   40   37   38   38    37
   7  |    5    7    5    6    8    3    8    7    5    6    6    2 |    56   47   50   56   57   56   49   56   58   57   58    56
   8  |    8    9    9    7    7    3    5    7   11    8    5    2 |    28   25   28   25   25   26   25   27   27   27   29    26
   9  |    4   10    6    7    7    3    5   10    6    7    7    2 |    20   25   20   20   21   21   20   25   18   20   18    20
  10E |   13   11    9    9   12    5    5   10    9    9    7    3 |    38   33   35   32   35   34   34   34   36   36   34    34
  11  |    7   11   11   12    8    3    8   65    6    9    6    3 |    26   27   29   28   29   25   25   37   28   27   30    26
  12E |    6    9    9    7   17    3   13   11    9   10   10    3 |    72   68   65   66   72   69   65   69   73   66   70    69
  13  |    7   10    8   10    6    5    6    9    8    7   12    3 |    27   33   29   30   30   29   28   33   31   31   29    29
  14E |    7    8   20    8   11    4    5   57   10   11   10    3 |    43   44   52   43   44   45   40   51   44   46   45    44
  15  |    6    8    6    8    6    4   11    6    7   10    8    2 |    51   46   49   51   47   49   52   49   49   44   49    49
  16E |    7    8    5   10    6    3   17    9    7   11    6    3 |    46   42   40   43   40   41   40   43   43   42   42    42
  17  |    8   12    7   10    9    5    6   10    6    8    6    2 |    37   35   35   35   36   36   34   37   38   37   38    35
  18  |    9   11   11    7    8    3   10   58    9   11    9    3 |    32   34   31   33   34   31   32   40   33   33   35    32
  19  |    5   12    6   10    9    4   12    9    6    8    8    3 |    34   36   36   36   36   36   34   36   39   39   39    36
  20E |   11    7    9    8    8    3    8    8    5    9    7    3 |    64   62   63   61   63   63   64   65   63   66   63    63
  21  |   10    6    5   10    8    4    9   10   12    9    9    3 |    36   33   33   35   32   33   33   36   32   34   33    32
  22E |    6    6    7   12   10    4    9    9    7    8    7    3 |    45   45   45   40   43   45   43   45   42   47   44    43
  23E |    7    6   18   10   12    4    8   57    8   12    8    3 |    37   39   45   39   42   38   40   47   39   42   41    39
  24  |    8   10    8    8    8    4    7   11    7   10    8    3 |    36   36   33   34   34   35   34   38   37   34   35    34
  25E |    7   12    9    7    6    4   12   10    9   10    7    3 |    25   24   27   25   26   25   22   25   30   24   30    26
  26E |    8   10    7    9   11    3    7   10    8   10   10    3 |    44   40   40   38   43   40   39   40   42   40   45    41
  27  |    8    7    9    6    6    2    7    9   10    7    6    2 |    30   26   27   25   25   27   26   28   27   31   30    27
  28  |    6   13    4    5    8    3    8   45    8    8   11    3 |    58   60   58   58   59   58   58   66   61   62   60    58
  29  |    6    8    7    8    8    4   18    9    8    9    8    3 |    40   40   38   41   41   40   38   40   43   42   43    40
  30  |    5    9    9    7    8    3    7    9    8    8    6    2 |    34   33   32   32   33   33   32   34   34   32   35    33
  31  |    4   10    7    5    6    2    8   13    7    9    9    2 |    49   51   49   47   46   48   47   56   51   47   48    48
  32  |    6    8    7    8    7    3    5   10    6    9    7    2 |    27   29   25   25   22   25   26   28   24   28   25    25
------+-------------------------------------------------------------+--------------------------------------------------------------
 RMS  |    7   10    9    8    9    4    9   26    8    9    8      |T   40   39   39   39   40   39   38   42   40   40   41    39
 WRMS |    7   10    8    8    9    3    9   26    8    9    8      |NE  37   36   35   36   36   36   35   40   37   37   37    35
 MEDI |    7    9    8    8    8    4    8   10    8    9    8      |MD  38   38   38   38   39   37   36   40   39   39   39    37

Table 3.2315.1   GPS week: 2315   Day: 1   MJD: 60450.000                            

        Weighted Average                                                 Orbit Dynamics (7 days)
 PRN  |  cod  emr  esa  gfz  grg  igr  jgx  jpl  mit  ngs  sio  IGS |   cod  emr  esa  gfz  grg  igr  jgx  jpl  mit  ngs  sio   IGS
------+-------------------------------------------------------------+--------------------------------------------------------------
  X1E |   10  ---  ---  ---    8   10  ---  ---   10  ---  ---    6 |    28  ---  ---  ---   25   27  ---  ---   27  ---  ---    26
   2  |   10    8    6   11   11    4    8   11    9   13    6    3 |    21   18   20   23   22   20   21   21   22   23   24    20
   3E |    7   10    9    7   12    5    7   12    9   11   10    3 |    33   32   35   33   35   34   34   34   31   34   33    32
   4  |    5   16    3    5    8    4    5   47    4    9    5    2 |    35   38   35   36   37   37   38   41   35   35   35    35
   5E |    7   11    8    8   10    3   11   10    8    9    6    3 |    43   47   48   48   46   47   50   47   48   51   48    46
   6  |    5    8    9    8    5    3    6    9    6    9    8    2 |    24   23   25   23   23   23   22   28   22   22   24    22
   7  |    5    7    5    5    7    2    7    8    6   10    4    2 |    27   26   23   31   29   28   25   32   31   29   31    28
   8  |    4    8    9    9    5    2    6    6    6   10    6    2 |    25   23   25   24   26   24   26   24   25   22   25    23
   9  |    3    9    5    6    6    3    4   10    6   10    5    2 |    24   28   25   24   25   25   24   31   25   26   23    24
  10E |   11   12   10   10   13    4    8   11    6   10   10    3 |    32   29   30   30   33   29   28   30   32   32   34    30
  11  |    7   12   11   11    6    4    8   65    6   11    6    3 |    24   27   26   27   28   25   27   30   26   24   26    25
  12E |    7   11    9    9   12    4   16   12    6   11    7    3 |    45   45   41   45   47   43   41   44   44   48   45    44
  13  |    8   10    8    7    4    4    7    8    7    8    8    2 |    21   27   21   22   23   22   23   27   22   22   21    21
  14E |    8    8   19   11   12    4    8   56    9   12    7    4 |    14   17   26   25   21   17   16   26   18   16   20    17
  15  |    6    8    6    7    5    5   13    7    8    8    7    2 |    33   30   30   32   32   32   34   33   34   33   34    32
  16E |    6    8    5    9    7    5   15   12    8    8    9    3 |    19   19   18   22   17   18   17   19   18   21   19    17
  17  |    6   10    6    7    7    5    7    9    5   10    6    2 |    28   26   26   27   27   27   27   31   29   28   30    27
  18  |    7   11   11    8    8    4   14   58    6   11    8    3 |    25   30   26   28   28   25   27   29   29   27   30    26
  19  |    5   12    8   11    8    6   13   10    7   11   12    3 |    23   24   26   27   23   25   24   26   26   26   28    24
  20E |   11   10   10    8    7    2    9   10    6   10    7    3 |    66   65   65   63   66   65   65   68   67   67   66    65
  21  |    8    8    5   10   10    2    9   10    7   12    6    3 |    20   19   19   20   21   18   20   21   21   23   22    18
  22E |    5    8    7   13    9    4   10    9    6    8    8    3 |    18   21   21   23   20   19   20   20   19   22   21    19
  23E |    6    8   19   10   10    5   10   57    7   13    6    3 |    44   47   50   44   46   46   46   52   49   51   49    46
  24  |    8   12    9    5    5    4    8    9    8    6    6    2 |    31   35   31   33   31   32   31   37   34   33   31    31
  25E |    6   13    9    7    6    3   12   12    7    9    4    2 |    18   21   22   20   20   17   18   20   21   19   20    17
  26E |    5   12    8   10    9    5    9   11    8   13    9    3 |    25   24   23   24   29   25   26   26   26   29   29    25
  27  |    6    9    7    7    6    2    5    9    6    7    7    2 |    24   23   25   24   24   23   23   24   25   25   26    23
  28  |    6   14    5    6    6    5   10   47    7    7   11    3 |    45   45   45   44   46   46   47   52   49   47   48    45
  29  |    5   10    8    6    7    4   20   12    6   13    7    3 |    31   32   30   33   33   32   33   31   34   38   35    32
  30  |    5    9    9    7    6    3    7    9    7    6    6    2 |    19   24   18   18   19   20   19   23   20   18   21    18
  31  |    4    9    6    8    7    3   10   11    5    7    9    2 |    39   42   39   39   38   40   40   44   41   41   40    39
  32  |    5    9    7    3    5    3    6   11    5    7    7    2 |    24   28   24   25   22   25   23   29   26   26   26    24
------+-------------------------------------------------------------+--------------------------------------------------------------
 RMS  |    7   10    9    8    8    4   10   26    7   10    7      |T   29   30   29   30   30   29   29   32   30   30   31    28
 WRMS |    6   10    9    8    8    4   10   26    7    9    6      |NE  27   28   26   28   27   27   27   30   28   28   29    26
 MEDI |    6   10    8    8    7    4    8   11    6   10    7      |MD  25   27   26   27   27   25   26   30   26   27   29    25

Table 3.2315.2   GPS week: 2315   Day: 2   MJD: 60451.000                            

        Weighted Average                                                 Orbit Dynamics (7 days)
 PRN  |  cod  emr  esa  gfz  grg  igr  jgx  jpl  mit  ngs  sio  IGS |   cod  emr  esa  gfz  grg  igr  jgx  jpl  mit  ngs  sio   IGS
------+-------------------------------------------------------------+--------------------------------------------------------------
  X1E |   12  ---  ---  ---    8   11  ---  ---    9  ---  ---    7 |    32  ---  ---  ---   32   32  ---  ---   31  ---  ---    31
   2  |   12    9    6   11   10    3    8   12    7   11   13    3 |    33   34   32   36   34   32   33   33   34   31   37    33
   3E |    8   15   11   11   12    4    8   13    9   12   11    3 |    33   37   35   33   36   33   33   34   34   32   37    33
   4  |    6   15    3    7    8    3    9   47    5    9    6    2 |    38   38   39   42   41   38   39   46   40   40   42    39
   5E |    6    9    8    7    7    4   12   10    7   11    7    3 |    50   51   53   52   53   52   53   52   55   50   55    52
   6  |    6   10    8    9    7    3    8    8    6   12    6    2 |    37   36   38   37   37   36   34   39   35   33   36    35
   7  |    4    7    5    6    7    2    9    9    4    9    6    2 |    44   41   43   41   45   43   44   47   43   42   43    43
   8  |    7    8    9    8    6    3    7    9    4   13    6    2 |    34   35   37   35   35   33   33   35   33   39   34    34
   9  |    4    9    6    6    7    2   10   11    6   10    5    2 |    31   36   32   34   31   32   31   35   32   32   33    32
  10E |   10   11   11   10   11    5    9   12    7   12    8    3 |    40   39   40   40   40   38   35   39   39   34   41    38
  11  |    7   13    7   11    6    4   12   61    7   14    5    3 |    33   35   35   39   36   33   34   39   36   35   38    35
  12E |    9   10   10   10    8    3   16   12    6    9    6    3 |    52   51   48   50   54   50   47   49   50   54   51    50
  13  |    5   10    8    8    5    5   10   10    7    6   10    2 |    32   38   32   37   35   33   32   38   37   33   38    34
  14E |    8    9   20   10   12    4    9   59    9   11    7    4 |    20   22   29   28   23   22   22   31   24   20   25    22
  15  |    5    9    6   10    5    3   13    7    8   10   10    3 |    41   40   41   43   42   41   43   43   43   42   44    41
  16E |    8    8    7    9    7    4   17   10    7   13    6    3 |    27   28   29   31   29   28   31   28   31   30   31    29
  17  |    7   10    6   10    8    3    8    8    7    7    6    2 |    36   37   36   38   38   36   36   39   40   38   40    37
  18  |    8   13   10    6    8    4   13   54    8   12    9    3 |    28   34   31   32   32   29   32   33   32   29   32    30
  19  |    6   10    8   12    8    3   15   10    7   11   10    3 |    33   35   35   35   34   34   32   36   37   38   39    35
  20E |   11   10    7   14    8    4   10   11   13   13   13    4 |    58   56   58   59   58   58   57   59   60   58   60    57
  21  |   10    8    5    8    9    4    9   13    6   13   10    3 |    34   37   34   37   37   34   35   36   37   33   37    35
  22E |    7    7    7   14    9    3   12    8    7    7    9    3 |    24   25   25   29   25   25   24   26   25   27   27    24
  23E |    7    7   19   10   11    4    9   57    9   16    9    4 |    46   49   51   48   46   47   46   52   47   46   47    46
  24  |    6   12    8    7    7    3    9    9    9    8    6    3 |    36   41   38   41   39   38   38   43   38   37   37    37
  25E |    8   16   10   12    7    3   11   12    9    8    6    3 |    25   22   23   21   22   24   18   19   24   18   22    24
  26  |    8   12    9    8   11    4    7    9    8   11    9    3 |    36   37   36   35   36   35   35   36   37   36   36    35
  27  |    7    9    7    9    5    2    6   12    8   13    5    2 |    35   38   36   35   35   35   34   36   36   41   35    35
  28  |    6   12    6    8    7    4    9   47    6   11    9    3 |    54   57   54   56   56   53   53   59   57   56   57    55
  29  |    4    9   10    8    6    3   20   11    6   12    9    3 |    39   41   40   43   41   41   39   42   42   44   38    40
  30  |    5    9    9    5    7    3    8    9    5   10    6    2 |    30   32   29   32   31   30   31   34   30   29   29    30
  31  |    3    9    7    8    7    3    8   12    6   12    5    2 |    51   54   52   48   49   50   49   55   53   53   48    51
  32  |    5    9    8    6    6    3    6   12    7    9    4    2 |    30   35   30   31   29   29   28   34   31   30   32    30
------+-------------------------------------------------------------+--------------------------------------------------------------
 RMS  |    7   10    9    9    8    4   11   26    7   11    8      |T   36   38   37   38   37   36   36   39   38   37   38    36
 WRMS |    7   10    9    9    8    4   11   26    7   10    6      |NE  36   38   37   38   37   36   36   40   38   37   38    37
 MEDI |    7    9    8    9    7    3    9   11    7   11    7      |MD  34   37   36   37   36   34   34   38   37   36   37    35

Table 3.2315.3   GPS week: 2315   Day: 3   MJD: 60452.000                            

        Weighted Average                                                 Orbit Dynamics (7 days)
 PRN  |  cod  emr  esa  gfz  grg  igr  jgx  jpl  mit  ngs  sio  IGS |   cod  emr  esa  gfz  grg  igr  jgx  jpl  mit  ngs  sio   IGS
------+-------------------------------------------------------------+--------------------------------------------------------------
  X1E |   11  ---  ---  ---    8   11  ---  ---   12  ---  ---    8 |    31  ---  ---  ---   27   29  ---  ---   28  ---  ---    27
   2  |    9    9    6   14   10    4    9   11    6   10    9    3 |    26   27   27   29   30   26   28   26   25   31   24    26
   3E |    7   15   11    9   12    4    9   12   10   15   13    4 |    29   31   32   27   33   27   28   31   25   31   27    28
   4  |    6   14    4    7    9    3    8   47    4   10    6    2 |    24   24   25   27   27   24   26   38   24   27   25    25
   5E |    8   10   10   10   10    3   12   11    7   12    8    3 |    29   30   31   27   30   29   31   31   30   32   32    29
   6  |    6   11    8    6    7    2    9   10    6    9    6    2 |    27   28   29   27   28   27   24   29   23   24   27    26
   7  |    4    7    5    5    7    2    9    8    5    7    4    2 |    44   37   39   48   44   44   35   46   43   41   46    43
   8  |    6   11    9   11    6    2    6    8    5   12    5    2 |    23   24   26   23   25   22   23   25   20   26   22    22
   9  |    4    9    7    6    8    3    9   10    6    9    6    2 |    17   24   21   19   19   19   17   26   18   19   17    18
  10E |    8   10   10   10   11    5    9   13    8    9    9    3 |    28   28   26   27   29   26   27   27   25   25   28    26
  11  |    7   14    8    9    7    3   11   62    6   12    6    3 |    16   22   22   24   22   19   17   33   20   14   22    19
  12E |    6   13    9   11    8    6   14   13    6    9    7    3 |    46   50   46   47   50   47   46   49   49   52   45    47
  13  |    7   11   10    8    4    5   10    8    8    8   12    3 |    18   26   19   19   21   19   18   24   18   22   21    19
  14E |    9    8   19   10   17    4    8   62    8   17    8    4 |    21   24   30   29   27   22   23   34   22   26   23    23
  15  |    8    9    8   10    6    5   14    8    9   11   11    3 |    46   43   45   47   43   45   47   46   42   36   40    43
  16E |    8    9    8    9    8    4   19   10    7   11   10    3 |    21   18   20   20   18   17   21   20   20   21   19    18
  17  |    8    8    6    9    7    5    8   10    8   11    6    3 |    21   25   24   24   25   23   21   27   23   23   24    22
  18  |    9   14   10    7    8    4   13   57    7   12   10    3 |    18   24   20   23   24   19   20   33   19   18   19    19
  19  |    5   10    7   11    9    5   12   10    7    9    9    3 |    22   23   24   23   24   21   19   23   22   22   23    21
  20E |    9   11    8    9   10    3   10   11   10   10    8    3 |    29   31   32   29   32   30   28   32   30   30   33    30
  21  |   10    8    6   12    9    4   10   12    7   11    9    3 |    21   23   23   25   24   21   22   24   20   25   22    21
  22E |    5    7    7    8    9    4   11    8    6    9    8    2 |    23   23   24   21   23   21   21   22   22   21   22    21
  23E |    8    8   20   13   10    4   10   55    9   12    9    4 |    26   30   34   29   31   28   28   37   26   24   28    27
  24  |    7   12    8   10    6    4    9   11    7   10    8    3 |    22   29   23   24   23   24   23   30   22   26   22    22
 X25E |    2  ---  ---  ---  ---    7  ---  ---  ---  ---  ---    0 |    24  ---  ---  ---  ---   23  ---  ---  ---  ---  ---    23
  26  |    8   14    9   11   14    3    8    9    7   11    9    3 |    25   24   24   23   21   22   22   24   21   22   23    21
  27  |    6    7    8    9    5    2    9    9    7   11    5    2 |    23   24   24   23   22   21   22   25   21   23   22    22
  28  |    5   16    6    6    9    4    9   47    7   10    9    3 |    26   30   26   25   26   25   24   40   27   29   30    26
  29  |    6   10    9    9    6    4   18   13    7    9    6    3 |    20   21   19   23   21   20   20   25   21   24   23    20
  30  |    4   11    9    9    7    3    7    9    6   10    6    2 |    25   28   27   27   27   26   24   30   25   24   26    25
  31  |    4   10    7    8    7    4   10   10    6   11    8    2 |    42   41   42   38   38   40   40   47   41   40   40    40
  32  |    5    9    7    9    7    3    8   13    8    6    7    2 |    23   30   23   25   23   23   23   31   22   19   24    23
------+-------------------------------------------------------------+--------------------------------------------------------------
 RMS  |    7   11    9    9    9    4   11   26    7   11    8      |T   26   28   27   27   27   25   25   31   25   26   26    25
 WRMS |    7   11    9    9    9    4   11   26    7   10    8      |NE  25   27   26   27   26   25   24   31   24   25   25    25
 MEDI |    7   10    8    9    8    4    9   11    7   10    8      |MD  24   26   25   25   26   23   23   30   23   24   24    23

Table 3.2315.4   GPS week: 2315   Day: 4   MJD: 60453.000                            

        Weighted Average                                                 Orbit Dynamics (7 days)
 PRN  |  cod  emr  esa  gfz  grg  igr  jgx  jpl  mit  ngs  sio  IGS |   cod  emr  esa  gfz  grg  igr  jgx  jpl  mit  ngs  sio   IGS
------+-------------------------------------------------------------+--------------------------------------------------------------
  X1E |   12  ---  ---  ---   10   10  ---  ---   10  ---  ---    7 |    34  ---  ---  ---   28   28  ---  ---   29  ---  ---    30
   2  |    8    7    5   10   11    4    9   11    6   14    8    3 |    17   19   18   22   23   20   21   19   21   25   22    19
   3E |    7   14   11   13   14    5   13   13    9   12   14    4 |    19   20   24   21   20   19   19   21   18   19   20    18
   4  |    7   14    4    8    7    3    7   48    5    9    9    2 |    35   36   35   36   37   35   35   42   34   39   37    35
   5E |    7    9    9    9    7    3   12   10    5    8    9    3 |    27   29   31   26   28   29   32   32   30   29   31    28
   6  |    7   11   10    7    8    3    9   10    5   11    6    2 |    23   24   26   23   23   22   19   26   21   22   21    22
   7  |    5    7    5    6    7    3   11    9    6   10    4    2 |    37   30   29   42   37   36   28   42   36   36   38    36
   8  |    6   11   10   14    8    3    6    9    6   13    9    3 |    19   22   22   24   22   19   20   20   17   17   20    18
   9  |    5    8    6    7    6    3    9   11    7   11    6    2 |    18   22   20   19   20   19   19   24   20   21   18    18
  10E |    8   11   10    7    7    4    8   11    7   10   10    3 |    26   25   23   24   25   23   23   24   24   23   25    23
  11  |    6   12    8    7    6    2   11   59    8   12    6    3 |    20   20   23   25   25   21   21   34   26   22   22    21
  12E |    5   12    9    6   11    5   15   15    7   10    7    3 |    53   56   52   57   53   54   50   54   55   56   53    53
  13  |    6    8    8    8    5    4   11   10    8   10    8    2 |    15   21   16   18   17   17   16   26   16   16   16    15
  14E |    8    9   19    8   24    5   11   57    8   20    5    4 |    21   24   32   28   31   25   23   33   24   30   24    24
  15  |    6    5    7    9    5    4   16   10    8   12   10    3 |    40   40   38   42   38   39   45   44   39   32   37    39
  16E |    9   10    8   10    7    4   16    9    9   11    6    3 |    32   27   29   28   28   28   30   30   30   29   28    28
  17  |    6   10    7   13    8    5    9   10    6    9    7    3 |    18   21   18   24   21   19   17   23   22   18   22    19
  18  |    8   13   11    8    6    5   13   57    8    9    9    3 |    21   26   24   26   26   23   22   36   25   19   24    22
  19  |    6   10    7   11    8    5   12   10    5    9   10    3 |    19   19   20   23   20   19   19   20   22   21   23    20
  20E |    8    6   10    8    6    3   11   10    7   14    9    3 |    31   29   30   29   32   30   32   32   32   33   32    30
  21  |    8    8    4   11   10    5   10   10    7   18   10    3 |    16   18   15   21   21   17   18   19   17   25   18    16
  22E |    4    9    8    7    8    4   11    9    6   10    8    2 |    20   22   21   20   19   20   20   22   20   23   23    20
  23E |    7    9   19    9    6    4   11   53    8   15    9    3 |    21   26   32   24   28   23   26   32   25   21   24    23
  24  |    7   11    8    8    7    4   10   11    7   12    7    3 |    20   25   20   19   20   20   21   29   21   23   22    19
  25E |    8   14    8   10    7    3    9   12   11   11    7    3 |    24   27   24   25   25   24   22   24   24   23   24    23
  26  |   12   15    9   13   13    4    8   10    9   13   12    4 |    30   24   25   28   25   24   23   25   24   27   27    24
  27  |    6   10    8   24    6    3    8   10    8   11    6    3 |    19   20   22   32   20   19   20   23   20   20   21    18
  28  |    7   17    5    8    8    4   10   51    7    9    9    3 |    36   37   37   39   39   37   39   44   39   40   41    37
  29  |    6   12    7    9    6    3   17   10    6   11    7    3 |    24   23   23   28   24   24   26   25   26   26   28    24
  30  |    4    8    8    6    7    3    9    9    7    9    4    2 |    20   25   22   22   21   21   19   27   20   20   18    20
  31  |    5   10    5    6    7    5   14    9    6    9    7    2 |    37   36   35   33   31   35   35   41   38   36   39    35
  32  |    5   12    8    5    4    3    9   10    8   10    7    2 |    18   26   18   16   16   18   18   26   17   17   19    17
------+-------------------------------------------------------------+--------------------------------------------------------------
 RMS  |    7   11    9   10    9    4   11   26    7   12    8      |T   25   26   25   27   26   25   25   29   26   26   26    24
 WRMS |    7   11    9   10    9    4   11   26    7   10    7      |NE  23   25   24   26   25   24   23   29   24   24   25    23
 MEDI |    7   10    8    8    7    4   11   10    7   11    8      |MD  21   25   24   25   25   23   22   26   24   23   24    22

Table 3.2315.5   GPS week: 2315   Day: 5   MJD: 60454.000                            

        Weighted Average                                                 Orbit Dynamics (7 days)
 PRN  |  cod  emr  esa  gfz  grg  igr  jgx  jpl  mit  ngs  sio  IGS |   cod  emr  esa  gfz  grg  igr  jgx  jpl  mit  ngs  sio   IGS
------+-------------------------------------------------------------+--------------------------------------------------------------
  X1E |   10  ---  ---  ---    9    9  ---  ---    8  ---  ---    6 |    37  ---  ---  ---   34   33  ---  ---   35  ---  ---    34
   2  |   10    9    5    9   10    3    8   11    7   13    9    3 |    19   19   19   21   20   20   21   21   24   19   23    19
   3E |    7   15   11   10   11    4    9   13    9   13   13    3 |    20   23   25   20   19   20   21   23   22   20   21    19
   4  |    9   12    4    6    7    3    7   48    5    9    7    2 |    37   37   37   36   36   37   38   43   36   38   37    36
   5E |    9   11    9   13   25    3   12   13    6   11    9    4 |    42   42   47   50   52   45   46   44   49   47   48    46
   6  |    6    9    9    6    5    3    9   10    5    7    6    2 |    23   22   25   22   23   22   20   27   21   21   20    21
   7  |    5    7    4    6    7    2    8   10    5    6    5    2 |    37   41   40   47   33   34   41   37   33   37   35    34
   8  |    4    9    9   10    8    3    6    9    5   10    6    2 |    21   21   24   23   24   22   20   22   23   22   21    21
   9  |    6   11    6    4    6    3    7   11    9    7    7    2 |    29   30   28   29   27   29   29   32   33   31   29    28
  10E |    7   10    9    9    7    5    8   12    9    9    7    3 |    29   28   30   28   32   29   27   30   35   28   31    29
  11  |    6   12    8    6    6    3    9   60    6    9    8    2 |    25   27   27   28   31   26   28   31   33   27   31    28
  12E |    7   10    8   12    7    4   14   13    7   12    9    3 |    44   41   39   40   45   40   39   44   40   40   44    41
  13  |   10    8    8    9    5    4    8   11    6    9   11    3 |    19   24   20   21   18   20   21   28   25   23   23    20
  14E |    8    9   20    7   10    2    7   60    6   14    5    3 |    16   19   26   17   23   17   18   30   16   13   16    17
  15  |   10    6    7    9    7    4   16    7    7   11   11    3 |    34   30   29   34   30   31   31   34   33   30   29    30
  16E |   10   11    9   11   10    4   16   12    7   13    7    3 |    31   26   26   25   27   26   26   29   28   30   28    26
  17  |    7    7    7   11    6    5    8    9    9   11    8    3 |    25   25   24   31   26   26   26   29   33   27   29    27
  18  |    9   11    9    6    6    5   15   56    6   11   13    3 |    26   29   27   28   31   26   26   31   30   26   29    27
  19  |    6   11    7    9    7    5   14   10    8   12    8    3 |    23   24   25   28   24   24   23   26   29   24   25    24
  20E |   11    9    9   10    7    3    9   11    7    9   10    3 |    56   55   55   56   55   55   55   56   60   59   56    55
  21  |    8    8    6   11   10    4    9   11    7   12    9    3 |    19   19   19   23   21   20   20   22   25   21   21    19
  22E |    5    7    8    8   10    3   10   10    7   10   10    3 |    17   17   18   20   18   17   19   17   17   20   17    17
  23E |    8    8   19    9   10    4   10   55    8   13   12    4 |    41   44   51   44   43   44   43   50   48   45   44    44
  24  |   10   11   10    9    6    5    9   12    6   12    9    3 |    26   30   27   26   24   26   26   34   28   27   23    25
  25E |    8   16   10    9    9    4   10   13    7   12    7    3 |    27   28   26   29   22   26   24   26   23   26   22    25
  26  |   20   11    8    9   11    6   11   10    9   11   10    4 |    27   23   23   23   24   22   23   23   25   21   24    21
  27  |    6    9    7   15    7    3    7   12    8   10    8    3 |    23   24   26   23   24   22   21   26   29   24   24    23
  28  |    6   17    5   10    7    5   10   50    9    6   12    3 |    42   43   43   44   46   43   44   46   45   42   43    42
  29  |    8   13    6    9    5    4   16   14    7   11    7    3 |    32   34   32   38   36   35   34   34   37   34   33    33
  30  |    5   10    8    7    6    4    8   10    6    7    6    2 |    20   22   17   22   18   19   17   25   17   18   17    17
  31  |    6   11    6    9    7    3   11    9    7   10   13    3 |    40   42   41   42   38   40   40   45   44   42   43    40
  32  |    6   11    9   10    6    5    8   11   12   10   10    3 |    23   26   23   26   23   23   22   29   27   23   27    23
------+-------------------------------------------------------------+--------------------------------------------------------------
 RMS  |    8   11    9    9    9    4   10   26    7   11    9      |T   29   29   29   30   29   28   28   32   31   29   29    28
 WRMS |    8   11    9    9    8    4   10   26    7    9    8      |NE  27   28   27   29   27   27   27   31   30   27   28    26
 MEDI |    7   10    8    9    7    4    9   11    7   11    9      |MD  26   27   26   28   26   26   26   30   29   27   28    26

Table 3.2315.6   GPS week: 2315   Day: 6   MJD: 60455.000                            

        Weighted Average                                                 Orbit Dynamics (7 days)
 PRN  |  cod  emr  esa  gfz  grg  igr  jgx  jpl  mit  ngs  sio  IGS |   cod  emr  esa  gfz  grg  igr  jgx  jpl  mit  ngs  sio   IGS
------+-------------------------------------------------------------+--------------------------------------------------------------
  X1E |    9  ---  ---  ---    5   12  ---  ---    9  ---  ---    5 |    36  ---  ---  ---   35   37  ---  ---   37  ---  ---    35
   2  |   11    9    5    9    9    3    5   14   10   12    8    3 |    19   21   18   21   23   20   21   22   24   23   22    20
   3E |    7   15   11    7   10    6    9   16    8   13   12    3 |    22   28   28   23   24   23   24   30   23   21   25    22
   4  |    8   12    4    5    8    2    8   48    5   11    5    2 |    49   50   49   49   49   48   49   62   48   49   49    48
   5E |    6   10    7    7    6    3   12   15    7   11    8    3 |    55   56   59   59   55   58   59   58   58   59   60    57
   6  |    6   13    8    6    8    2    9   12    5    9    7    2 |    24   23   25   22   25   23   22   29   22   21   24    22
  X7  |   11  ---  ---   91   17   16  ---   18   15   31   31   10 |    47  ---  ---   86   49   51  ---   48   47   60   57    49
   8  |    4    9    9    9    6    2    6   11    5   14    6    2 |    21   22   24   24   22   21   21   23   20   24   19    20
   9  |    5   12    7    6    7    3    8   10    6    9    9    2 |    32   32   31   30   31   30   28   34   34   29   35    31
  10E |    9   12   10   10   10    4    9   16    6   13    7    3 |    34   30   31   31   36   31   29   33   32   30   34    31
  11  |    6   13    8    8    6    4   11   61    8   10    9    3 |    33   34   36   37   37   34   32   47   38   30   37    35
  12E |    6    9   10   14    8    4   12   17    6    9    6    3 |    58   55   55   57   60   57   54   60   59   58   57    57
  13  |    7   10    8    6    5    3    7   12    5    9   11    2 |    21   26   21   22   22   22   20   29   24   24   24    22
  14E |    8    8   22    9   10    2    8   61    7   11    7    3 |    24   25   33   25   30   26   26   37   25   27   25    25
  15  |    9    7    7    9    5    4   12   11    5   15   11    3 |    62   55   57   62   57   59   62   60   58   52   55    58
  16E |    9   12    9   11   12    4   18   13   10   15    7    4 |    26   19   21   23   25   21   23   22   23   24   22    21
  17  |   14   11    9    7    6    5    8   13    7   10    8    3 |    35   26   24   29   27   27   26   30   33   28   32    28
  18  |    8   14    8    5    7    3   13   57    5   14    8    3 |    39   41   38   38   41   37   37   48   39   33   38    38
  19  |    6   13    7    8    7    4   14   14    7    8   10    3 |    26   26   27   31   25   27   26   29   31   29   29    27
  20E |    9   10    9    9   13    5   10   15   12   13   14    4 |    75   72   73   75   72   74   72   74   76   74   76    73
  21  |    9   10    6   10    9    4    9   14    7   16    8    3 |    19   21   18   22   22   19   20   22   23   25   21    19
  22E |    6    7    8    6    7    3    9   12    5    7    8    2 |    25   28   28   26   28   26   27   29   25   29   27    26
  23E |    8    8   20   17    8    3   11   54    9   15   10    4 |    56   56   60   54   56   56   55   63   57   56   58    56
  24  |    8   11    9    7    7    3    8   13    6    9    7    2 |    29   33   28   31   27   29   27   35   29   30   28    28
  25  |    5   15    9   11   12    3    7   15    9   11    6    3 |    21   24   22   25   23   20   19   24   20   23   20    21
  26  |    5   13    9    8   13    3    9   14   10   13    8    3 |    21   24   24   25   28   24   24   25   24   23   24    23
  27  |    7   10    8    9    8    3    8   13    6   14    4    3 |    22   23   26   25   24   23   21   27   23   27   22    22
  28  |    4   16    5    6    7    3   10   45    6   11   11    3 |    53   53   51   53   56   52   55   64   53   54   51    52
  29  |    7   11    9   10    5    3   18   14    7   14    7    3 |    38   37   35   41   39   38   42   38   40   39   36    38
  30  |    6   14    7    5    8    2    8   13    5    8    6    2 |    21   24   19   22   21   20   19   26   18   17   20    19
  31  |    6   12    7    6    5    3    9   14    6   12    9    2 |    49   51   49   45   49   48   47   57   51   47   48    48
  32  |    4   12    8    4    6    2    6   16    7   10    8    2 |    27   28   23   25   25   26   25   32   26   23   28    25
------+-------------------------------------------------------------+--------------------------------------------------------------
 RMS  |    7   11    9    9    8    3   10   27    7   12    8      |T   34   34   34   36   35   34   33   39   35   35   35    34
 WRMS |    7   11   10    9    8    3   10   27    6   10    7      |NE  33   32   31   35   33   32   31   38   34   33   33    32
 MEDI |    7   11    8    8    7    3    9   14    7   11    8      |MD  29   28   28   30   28   27   26   33   31   29   29    28



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 4.2315   GPS week: 2315   MJD: 60449.0-60455.0

CENT| CLK EPO  |        BRUX       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3057 |U    9     8    27 |U    8    15    39 |U    9     9    26 |
emr | emr 2948 |U   12    11    28 |U   12    19    42 |    12    10    29 |
esa | esa 2948 |     9    13    28 |U    9    17    47 |U   12     9    29 |
gfz | gfz 2957 |U    8     9    29 |U    8    12    36 |    10     9    30 |
grg | grg 3057 |U    8     9    31 |U    9    13    37 |    11    10    29 |
igr | igr 2958 |     8     8    23 |     8    13    35 |     9     9    27 |
igs | igs 2961 |     8     7    24 |     8    13    36 |     9     8    26 |
jgx | jgx 2948 |U    8     8    28 |U    9    13    35 |     9     9    27 |
jpl | jpl 2962 |    15    13    33 |    11    19    53 |    17    11    38 |
mit | mit 3058 |U    8     9    28 |U   11    15    38 |U    9     9    31 |



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 5.2315.0   GPS week: 2315   Day: 0   MJD: 60449.0

CENT| CLK EPO  |        BRUX       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3072 |    12    10    38 |     9    14    34 |     9    11    20 |
emr | emr 2976 |    13    11    23 |    11    16    41 |    13    11    23 |
esa | esa 2976 |    11    13    27 |    10    16    46 |    12     9    22 |
gfz | gfz 2976 |    11    10    40 |    10    10    29 |    10     8    20 |
grg | grg 3072 |    12    10    39 |    12    13    40 |    11    12    21 |
igr | igr 2976 |    11     8    31 |     9    12    31 |    10    10    20 |
igs | igs 2976 |    12     8    32 |     9    11    33 |    10     9    19 |
jgx | jgx 2976 |    12     9    36 |    10    11    30 |    10    11    20 |
jpl | jpl 2976 |    16    10    26 |    13    15    63 |    18    12    39 |
mit | mit 3072 |    10     8    35 |    11    13    35 |     9     8    24 |

Table 5.2315.1   GPS week: 2315   Day: 1   MJD: 60450.0

CENT| CLK EPO  |        BRUX       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3072 |    10    11    21 |     8    13    39 |     9     9    25 |
emr | emr 2976 |     9    10    23 |    11    19    41 |    14    12    26 |
esa | esa 2976 |     8    16    28 |    10    18    47 |    12    10    20 |
gfz | gfz 2976 |     8     9    17 |     9    10    34 |    11     8    25 |
grg | grg 3072 |     9    11    24 |    10    12    33 |    11     8    25 |
igr | igr 2976 |     8    10    15 |     8    12    34 |    11    10    24 |
igs | igs 2976 |     8     9    17 |     9    12    35 |     9     8    23 |
jgx | jgx 2976 |     8     9    19 |     9    10    35 |     9    10    24 |
jpl | jpl 2976 |    14    13    32 |    11    20    54 |    18    13    31 |
mit | mit 3072 |     8     8    20 |    10    14    37 |     9     7    26 |

Table 5.2315.2   GPS week: 2315   Day: 2   MJD: 60451.0

CENT| CLK EPO  |        BRUX       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3072 |     8     9    25 |     8    14    36 |     9     7    30 |
emr | emr 2976 |    11    14    38 |    12    20    40 |    14     9    27 |
esa | esa 2976 |     9    11    32 |     9    17    48 |    12     7    29 |
gfz | gfz 2976 |     8     9    24 |     9    13    34 |    10     7    33 |
grg | grg 3071 |     8     6    29 |    10    13    37 |    11     8    32 |
igr | igr 2976 |     8     7    22 |     8    13    35 |    10     7    29 |
igs | igs 2976 |     8     7    22 |     8    13    35 |     9     6    29 |
jgx | jgx 2976 |     8     8    25 |     9    13    31 |     9     7    30 |
jpl | jpl 2976 |    14    10    40 |    11    21    50 |    19    12    32 |
mit | mit 3072 |     7    11    27 |    11    15    40 |     8     7    30 |

Table 5.2315.3   GPS week: 2315   Day: 3   MJD: 60452.0

CENT| CLK EPO  |        BRUX       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 2976 |     9     8    25 |     7    15    36 |    11     9    27 |
emr | emr 2880 |    11     6    28 |    17    17    55 |    12     9    30 |
esa | esa 2880 |     9    11    30 |     9    17    45 |    14    10    29 |
gfz | gfz 2880 |     9     7    27 |     7    13    38 |    11    10    34 |
grg | grg 2976 |     9     8    33 |     8    14    38 |    12    10    29 |
igr | igr 2880 |     8     6    23 |     7    14    35 |    11     8    28 |
igs | igs 2880 |     8     6    24 |     7    14    34 |    11    10    28 |
jgx | jgx 2880 |     9     7    28 |     8    13    35 |    12    10    29 |
jpl | jpl 2880 |    15    12    33 |    11    20    56 |    17    11    34 |
mit | mit 2976 |    11     8    29 |    10    16    35 |    11     9    28 |

Table 5.2315.4   GPS week: 2315   Day: 4   MJD: 60453.0

CENT| CLK EPO  |        BRUX       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3072 |     7     7    27 |     8    17    45 |     7     6    26 |
emr | emr 2976 |    12    14    29 |    10    20    41 |    11     9    29 |
esa | esa 2976 |     9    17    31 |     7    17    50 |    12     9    30 |
gfz | gfz 2976 |     8    11    37 |     8    15    37 |     9     9    31 |
grg | grg 3072 |     6    11    33 |     8    15    34 |    10    10    29 |
igr | igr 2976 |     7     9    25 |     7    14    38 |     9     8    26 |
igs | igs 2976 |     7     9    27 |     7    14    40 |     8     8    26 |
jgx | jgx 2976 |     8     8    30 |     8    15    39 |     8     9    27 |
jpl | jpl 2976 |    14    14    37 |    11    17    49 |    16     9    38 |
mit | mit 3072 |     7     9    30 |    11    16    41 |     8     6    30 |

Table 5.2315.5   GPS week: 2315   Day: 5   MJD: 60454.0

CENT| CLK EPO  |        BRUX       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3072 |     7     6    27 |     9    15    46 |     9    11    29 |
emr | emr 2976 |    12    12    28 |    11    23    47 |    12    12    35 |
esa | esa 2976 |    10    12    26 |     9    21    54 |    11    11    36 |
gfz | gfz 2976 |     6     7    27 |     9    13    44 |     9    13    36 |
grg | grg 3072 |     6     8    32 |     9    14    41 |     9    12    30 |
igr | igr 2976 |     6     6    22 |     9    15    41 |     9    11    31 |
igs | igs 2976 |     6     6    23 |     9    15    42 |     8    11    30 |
jgx | jgx 2976 |     6     6    28 |    10    14    42 |     8    12    30 |
jpl | jpl 2976 |    14    14    32 |    12    23    61 |    15    12    46 |
mit | mit 3072 |     7     8    26 |    12    16    43 |     9    10    34 |

Table 5.2315.6   GPS week: 2315   Day: 6   MJD: 60455.0

CENT| CLK EPO  |        BRUX       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3064 |     7     8    26 |     7    14    34 |     8     9    28 |
emr | emr 2880 |    16    14    30 |    11    19    33 |    11     9    37 |
esa | esa 2880 |    10    11    20 |     7    18    41 |    11     7    37 |
gfz | gfz 2945 |     7     8    28 |     7    14    37 |     8     7    34 |
grg | grg 3064 |     7    10    30 |     8    13    34 |    10     9    35 |
igr | igr 2946 |     7     8    23 |     7    14    33 |     8     7    32 |
igs | igs 2968 |     6     8    23 |     6    13    34 |     8     8    30 |
jgx | jgx 2880 |     7     9    30 |    10    14    33 |     8     7    31 |
jpl | jpl 2976 |    15    18    32 |     9    17    39 |    15     9    48 |
mit | mit 3072 |  ----  ----  ---- |     9    16    36 |    11    19    46 |


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 6.2315   GPS week: 2315   MJD: 60449.500-60455.500

                                                         AC LOD  AC LOD
CENT  FLAG  |   Xpole   Ypole     Xrt     Yrt    LOD |    BIAS  BIAS RMS
            |   [uas]   [uas]   [uas/d] [uas/d]  [us]|    [us]    [us]
------------+----------------------------------------+------------------
cod   uuuuu |     -10       0      46       5      0 |      -3     23
            |       9       8      56      47      5 |       2
emr   uuuuu |       5      -2      59      86     -5 |       1     29
            |      29      13      70      36     12 |       6
esa   uuuuu |      13      -3      44      68     -2 |       6     25
            |      15       9      42      43      2 |       4
gfz   uuuuu |      -6     -17     -88     -91      1 |       7     25
            |      13      15     140      87      4 |       4
grg   uuuuu |     -33      -5      11    -248      4 |      10     25
            |       6       8      42      54      5 |       2
igr   xxxxx |     -17     -10      12     -57     -3 |      -3     21
            |       8       8      29      33      4 |       3
irf   xxxxx |       0       5      -5      50      6 |      -4     24
            |      10       3      20      17      2 |       3
jgx   uuuuu |     -29     -34      35     -37      2 |       9     23
            |       7      13      28      25      4 |       2
mit   uuuuu |      47      37     -73     184     -1 |       8     26
            |      17      15      41      44      5 |       5
ngs   uuuuu |      -2       7     -10       3     -2 |      11     26
            |      23      29     192     117      7 |       2
sio   xxxxx |     -44      17    -119     -59     23 |      -6     32
            |      77      29      41      43     23 |      20


Table 7.2315.0   GPS week: 2315   Day: 0   MJD: 60449.500

                                                         AC LOD  AC LOD
CENT  FLAG  |   Xpole   Ypole     Xrt     Yrt    LOD |    BIAS  BIAS RMS
            |   [uas]   [uas]   [uas/d] [uas/d]  [us]|    [us]    [us]
------------+----------------------------------------+------------------
cod   uuuuu |     -11       7      65     -11      8 |      -1     20
emr   uuuuu |      13       3     -23      75    -27 |      13     24
esa   uuuuu |       3       4      43     122     -4 |      12     24
gfz   uuuuu |     -11     -38     151    -217     -4 |      13     24
grg   uuuuu |     -38     -11      32    -325     13 |      12     24
igr   xxxxx |      -9     -10      27     -73      5 |       2     15
irf   xxxxx |       0       7     -21      73      1 |       0     20
jgx   uuuuu |     -27     -23      51     -58     10 |      11     21
mit   uuuuu |      45      22    -141     251     -6 |      17     27
ngs   uuuuu |      25      40    -215     143      5 |      15     24
sio   xxxxx |    -121      11    -153    -118      9 |       0      0

Table 7.2315.1   GPS week: 2315   Day: 1   MJD: 60450.500

                                                         AC LOD  AC LOD
CENT  FLAG  |   Xpole   Ypole     Xrt     Yrt    LOD |    BIAS  BIAS RMS
            |   [uas]   [uas]   [uas/d] [uas/d]  [us]|    [us]    [us]
------------+----------------------------------------+------------------
cod   uuuuu |       2     -10      30     -28      4 |      -2     23
emr   uuuuu |     -31       7      10      73    -12 |       6     32
esa   uuuuu |       4      -3      89      64     -1 |       9     28
gfz   uuuuu |      11     -25    -133     -87      0 |       9     27
grg   uuuuu |     -30     -13      87    -220      0 |      11     25
igr   xxxxx |     -11      -4      17     -29     -3 |       0     20
irf   xxxxx |      -4       6       1      50      7 |      -3     25
jgx   uuuuu |     -26     -57      58     -30      4 |       9     23
mit   uuuuu |      60      60     -91     175     -4 |      13     30
ngs   uuuuu |     -29      26     -31      55      1 |      13     26
sio   xxxxx |    -100      64     -73     -49     65 |     -45     45

Table 7.2315.2   GPS week: 2315   Day: 2   MJD: 60451.500

                                                         AC LOD  AC LOD
CENT  FLAG  |   Xpole   Ypole     Xrt     Yrt    LOD |    BIAS  BIAS RMS
            |   [uas]   [uas]   [uas/d] [uas/d]  [us]|    [us]    [us]
------------+----------------------------------------+------------------
cod   uuuuu |     -21       1     105      15     -2 |      -6     23
emr   uuuuu |     -18       7      43     102      1 |      -2     29
esa   uuuuu |      41      -6      33      80     -4 |       3     25
gfz   uuuuu |       8     -12    -268      15     -5 |       4     25
grg   uuuuu |     -27      -4       7    -274      5 |       7     23
igr   xxxxx |     -23       3      32     -44     -8 |      -5     21
irf   xxxxx |       6       4      -8      44      9 |      -8     24
jgx   uuuuu |     -25     -42      47     -80      3 |       6     22
mit   uuuuu |      47      42     -68     163     -4 |       6     25
ngs   uuuuu |     -24      -6     129     -49      3 |       8     24
sio   xxxxx |      12      -7    -156    -110     45 |     -23     32

Table 7.2315.3   GPS week: 2315   Day: 3   MJD: 60452.500

                                                         AC LOD  AC LOD
CENT  FLAG  |   Xpole   Ypole     Xrt     Yrt    LOD |    BIAS  BIAS RMS
            |   [uas]   [uas]   [uas/d] [uas/d]  [us]|    [us]    [us]
------------+----------------------------------------+------------------
cod   uuuuu |     -12      -7     -64      50     -4 |      -5     25
emr   uuuuu |       5      -3      96      85     -6 |      -1     30
esa   uuuuu |      26      -9      96     101      0 |       4     25
gfz   uuuuu |       1       7    -181     -73      5 |       4     25
grg   uuuuu |     -41      -5     -26    -301      7 |       8     26
igr   xxxxx |     -17      -8      49     -33     -1 |      -3     22
irf   xxxxx |       0       5     -29      72      6 |      -7     26
jgx   uuuuu |     -33     -32      24     -17      1 |       8     25
mit   uuuuu |      33      52     -78     225     -5 |       6     25
ngs   uuuuu |      18     -35     280    -202      0 |      11     27
sio   xxxxx |     -18      44     -94     -24     15 |       4     43

Table 7.2315.4   GPS week: 2315   Day: 4   MJD: 60453.500

                                                         AC LOD  AC LOD
CENT  FLAG  |   Xpole   Ypole     Xrt     Yrt    LOD |    BIAS  BIAS RMS
            |   [uas]   [uas]   [uas/d] [uas/d]  [us]|    [us]    [us]
------------+----------------------------------------+------------------
cod   uuuuu |       3       9      44     -76     -4 |      -6     26
emr   uuuuu |      39      10       9     153      3 |      -4     30
esa   uuuuu |      -4     -18      50      83      0 |       2     25
gfz   uuuuu |      -8      -3    -127       3      4 |       3     25
grg   uuuuu |     -34     -13       5    -172     -1 |       8     26
igr   xxxxx |     -32     -11      10    -125     -6 |      -5     23
irf   xxxxx |     -19       0     -19      27      7 |      -7     26
jgx   uuuuu |     -27     -24      21     -35      0 |       7     25
mit   uuuuu |      18      35     -81     119      1 |       3     25
ngs   uuuuu |      17     -19     123     -57     -2 |       9     27
sio   xxxxx |    -138      -9     -82     -47      4 |       4     37

Table 7.2315.5   GPS week: 2315   Day: 5   MJD: 60454.500

                                                         AC LOD  AC LOD
CENT  FLAG  |   Xpole   Ypole     Xrt     Yrt    LOD |    BIAS  BIAS RMS
            |   [uas]   [uas]   [uas/d] [uas/d]  [us]|    [us]    [us]
------------+----------------------------------------+------------------
cod   uuuuu |     -12       8      97      40      2 |      -2     23
emr   uuuuu |     -14     -17     182      35     -3 |      -2     30
esa   uuuuu |      12       1      22      27      0 |       5     25
gfz   uuuuu |     -25     -25     -98     -91      5 |       8     25
grg   uuuuu |     -27       8     -45    -213     -1 |      12     26
igr   xxxxx |     -14     -16     -18     -51     -4 |      -3     22
irf   xxxxx |       7       5      10      39      5 |      -2     24
jgx   uuuuu |     -24     -38      60     -31     -1 |      11     25
mit   uuuuu |      56      28     -45     158      7 |       6     25
ngs   uuuuu |       2      10    -155      23    -12 |      13     27
sio   xxxxx |     -12     -10    -100     -67     13 |       8     35

Table 7.2315.6   GPS week: 2315   Day: 6   MJD: 60455.500

                                                         AC LOD  AC LOD
CENT  FLAG  |   Xpole   Ypole     Xrt     Yrt    LOD |    BIAS  BIAS RMS
            |   [uas]   [uas]   [uas/d] [uas/d]  [us]|    [us]    [us]
------------+----------------------------------------+------------------
cod   uuuuu |     -17      -4      48      49     -3 |      -2     23
emr   uuuuu |      44     -22      94      81     10 |      -4     30
esa   uuuuu |       9       9     -28      -2     -2 |       4     24
gfz   uuuuu |     -18     -24      38    -186      0 |       7     25
grg   uuuuu |     -36       2      14    -231      3 |      11     25
igr   xxxxx |     -11     -22     -33     -44     -2 |      -5     22
irf   xxxxx |      14      11      29      44      5 |      -2     24
jgx   uuuuu |     -43     -22     -17      -5      0 |       9     24
mit   uuuuu |      70      23      -8     197      5 |       5     24
ngs   uuuuu |     -23      36    -200     109    -10 |      10     27
sio   xxxxx |      68      28    -174       2      9 |       9     32


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