[IGSREPORT-28943] Wk 2227 IGS Final Orbits

acc acc at igs.org
Wed Oct 5 07:47:38 UTC 2022


Author:  AC Coordinator / GA MIT 

sum-file Version 2.0
Final IGS Orbit Combination - Week 2227   (Sep 11, 2022 - Sep 17, 2022)

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:

igs2227[0-6].sp3  IGS GPS ephemeris files in SP3 format.
igs2227[0-6].clk  IGS GPS satellite and station clocks in clock RINEX format.
igs2227[0-6].cls  IGS GPS clock combination summary report.
igs22277.erp      Earth Rotation Parameters (ERP) and their rates as well as
                  Universal Time (UT1-UTC) and Length Of Day (LOD) associated 
                  with IGS ephemerides.
igs22277.sum      Complete report.

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

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

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

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

 4. The following clock solutions were excluded from the combination because they
    were biasing the combined clock solutions (clock shifts/outliers) but were
    kept for the RMS computation. Duplicate entries can arise due to separate
    combination runs for the 30-s clocks ACs (listed first) and the 5-min clock
    ACs (listed second).
    
               Day | Centre | PRN/STA list
               ----+--------+---------------
                0  |  COD   | ABMF ASCG AUCK GUAM KOUR NANO NLIB OWMG PDEL POVE
                0  |  COD   | SCUB SGOC TWTF ASCG
                0  |  EMR   | MCM4
                0  |  ESA   | MAW1 GAMB MAW1
                0  |  GFZ   | DAV1 DAV1
                0  |  GRG   | GAMB GAMB LMMF
                0  |  JPL   | BADG BADG
                1  |  COD   | ASCG DAV1 GAMB MAC1 MAYG OWMG WIND GAMB WIND
                1  |  EMR   | MAS1
                1  |  ESA   | SAMO YEL2 PTBB YEL2
                1  |  GFZ   | CKSV DAV1 NOVM CKSV DAV1 NOVM
                1  |  GRG   | 13 AREQ CZTG KIRI SVTL
                1  |  JPL   | CHUR NOVM AREQ CHUR CZTG KIRI MAC1 NOVM
                2  |  COD   | BRFT BRFT NOVM
                2  |  EMR   | WHIT KERG WHIT
                2  |  ESA   | NNOR YEL2 NNOR PTBB YEL2
                2  |  GFZ   | CUSV NOVM CUSV NOVM
                2  |  GRG   | 24 24 SGOC STK2 SVTL WIND SGOC STK2 SVTL WIND
                2  |  JPL   | BADG RIOP
                3  |  COD   | ABMF ADIS ASCG CNMR CUSV CZTG DAV1 GUAM MKEA OWMG
                3  |  COD   | SAVO TWTF ADIS
                3  |  ESA   | CZTG KIT3 PTBB
                3  |  GFZ   | 5 AREQ GRAC NOVM WTZR AREQ GRAC NOVM SAVO WTZR
                3  |  GRG   | AREQ SVTL WIND AREQ CZTG SVTL WIND
                3  |  JPL   | SAMO CNMR CZTG MKEA SAMO
                3  |  NGS   | 23
                4  |  EMR   | MAS1 TWTF
                4  |  ESA   | HYDE SGOC HYDE PTBB
                4  |  GFZ   | 13 13 NYA2 FLRS HYDE NYA2
                4  |  GRG   | 13 13 CZTG GAMB SVTL WIND GAMB SGOC SVTL WIND
                4  |  JPL   | BADG CUSV BADG CUSV
                5  |  COD   | 23 ASCG CNMR DGAR IISC LMMF MAYG OWMG
                5  |  EMR   | KERG
                5  |  ESA   | 23 PTBB
                5  |  GFZ   | HERS NYA2 POHN DGAR HERS NYA2 POHN
                5  |  GRG   | HARB HYDE DGAR HARB HYDE OWMG TRO1
                5  |  JPL   | BADG
                6  |  COD   | ASCG GUAM LMMF MAYG OWMG TWTF
                6  |  ESA   | PTBB
                6  |  GFZ   | 13 13 AREQ
                6  |  GRG   | 13
                6  |  JPL   | CNMR CNMR CZTG

    
 5. New clock offsets and drifts were estimated for centres showing reference
    clock resets. Note that only the largest clock offset and drift are output
    to the summary file. However, the clock combination and the listed RMS
    include all the clock segments. In summary, the following clock
    shifts/resets were noticed and accounted for:
    
               Day | Centre |  Time  |  Jump
               ----+--------+--------+-------------
                2  |  COD   | ~23:30 | ~ 0.12 ns
                4  |  COD   | ~20:30 | ~ -0.11 ns

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

 7. The following orbit solutions were excluded from the combination because they
    were biasing the weighted average (generally indicated by long arc RMS). They
    were still used for statistics computation.
    
               Day | Centre | PRN list
               ----+--------+---------------
                2  |  GRG   |  24
                6  |  NGS   |   9

 8. Velocity changes were estimated to alleviate the effects of modeling problems,
    experienced by all centres,in the Long Arc (LA) process.
    
             Velocity changes per day and affected satellites:
    
               Day |  0 |  1 |  2 |  3 |  4 |  5 |  6 |
           --------+----+----+----+----+----+----+----+
           PRN G24 |  4 |  4 |  4 |  4 |  4 |  4 |  4 |

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

10. Small rotations were applied to all the AC orbit and ERP values in order to
    align them to the current IGS reference frame. These RX, RY and RZ rotations
    were estimated in the IGS SINEX combination process, performed by the IGS
    Reference Frame Coordinator at the Institut Geographique National (IGN).
    Starting on 19-Aug-2012 (GPS Week 1702; MJD=56158), ACs began contributing
    products based on 1d SINEX integrations. As a result, the SINEX combinations
    are now done daily instead of weekly, and the associated daily rotations are
    applied here to the orbits and ERPs. The estimated 7 transformations, from
    which only the 3 rotations are applied to the orbit and ERP values, are:
    
            |     |    DX     DY     DZ      RX     RY     RZ     SCL
     Centre | Day |   [mm]   [mm]   [mm]   [uas]  [uas]  [uas]   [ppb]
     -------+-----+---------------------------------------------------
       COD  |   0 |     .5    -.2     .9       3     -1     -4    -.48
       EMR  |   0 |   -2.5    2.7   15.9     -28    -17    -15    -.29
       ESA  |   0 |    -.4   -1.9   -1.0      -4      1     25    -.56
       GFZ  |   0 |     .4    -.1     .5      -3    -18     16    -.56
       GRG  |   0 |    2.9   -1.5    2.3      -9    -76     99    -.27
       JPL  |   0 |    2.3    -.2   12.3      -5      9      4    -.23
       MIT  |   0 |   -2.1     .0    5.3       6     -6     -3    -.42
       NGS  |   0 |   -1.4    2.3    7.0     -21     43      5    -.35
       SIO  |   0 |   -3.2    6.4   15.9      88    -76     85    -.81

       COD  |   1 |     .5     .0    1.3       0     -1      6    -.59
       EMR  |   1 |    -.3    8.5   17.9     -56     -8    -27    -.30
       ESA  |   1 |   -1.3   -1.5   -1.3     -18    -14     37    -.62
       GFZ  |   1 |    1.3    -.0    1.1       0    -33     -5    -.57
       GRG  |   1 |    1.6   -3.5   11.3     -17    -73    106    -.27
       JPL  |   1 |   -5.5   -5.8   11.3      -8      3      9    -.24
       MIT  |   1 |    -.5    3.6    7.8      17      5    -16    -.36
       NGS  |   1 |     .4    2.4    3.4     -14     25     22    -.29
       SIO  |   1 |   -2.6    7.1   19.2     102    -99    111    -.77

       COD  |   2 |     .4     .1    1.1       3     -3      2    -.62
       EMR  |   2 |    4.8   -1.9   12.0     -30      3    -42    -.29
       ESA  |   2 |   -1.2   -1.0    -.7     -16     -4     21    -.54
       GFZ  |   2 |     .4     .4     .8      13    -15     -6    -.50
       GRG  |   2 |    1.8   -3.4    9.4     -50   -106    187    -.17
       JPL  |   2 |    2.9   -6.9   12.4     -17      1     11    -.07
       MIT  |   2 |   -1.7    1.1    8.8      14     -2    -19    -.44
       NGS  |   2 |   -2.3   -3.3   10.8     -20     37     30    -.37
       SIO  |   2 |   -1.7    5.4   15.4      77    -92    102    -.71

       COD  |   3 |     .5    -.1    1.2       0     -3      4    -.60
       EMR  |   3 |    7.7    1.0   14.2     -25      4    -27    -.19
       ESA  |   3 |   -1.3   -1.3    -.3     -13      2     34    -.40
       GFZ  |   3 |     .9    -.2     .5       1    -28      8    -.50
       GRG  |   3 |    4.2   -3.1    8.8     -32   -101    179    -.06
       JPL  |   3 |   -2.0   -6.9   10.9      -3     -4     -8    -.01
       MIT  |   3 |    2.3    1.6   10.2      13     -1      6    -.31
       NGS  |   3 |    1.9     .5    7.7     -28     26     11    -.26
       SIO  |   3 |    1.2    7.5   15.5      98   -103    132    -.50

       COD  |   4 |     .6    -.0     .8       5      0     -9    -.52
       EMR  |   4 |   10.7    3.3   14.4     -31     17    -34    -.15
       ESA  |   4 |   -1.1   -1.6    -.7     -25      1     40    -.51
       GFZ  |   4 |     .5    -.6     .0     -12    -26     18    -.53
       GRG  |   4 |    6.2   -4.0   16.2     -36   -116    180    -.17
       JPL  |   4 |    -.4   -5.8   13.9     -12      3    -17    -.02
       MIT  |   4 |    4.1    1.4    9.4      -4     -2      4    -.29
       NGS  |   4 |    4.0    1.7   11.8     -32     -3     24    -.18
       SIO  |   4 |    5.0    3.5   15.8      50   -126     91    -.67

       COD  |   5 |     .6    -.2    1.0       5     -1      2    -.51
       EMR  |   5 |     .4    4.4   19.0     -28      7    -39     .14
       ESA  |   5 |   -1.2   -2.1    -.9     -18    -14     49    -.39
       GFZ  |   5 |     .2    -.2     .3      -4    -19     11    -.37
       GRG  |   5 |    1.3   -6.1   14.4     -44   -102    173    -.26
       JPL  |   5 |   -1.1   -3.9   13.4     -15     11    -12    -.14
       MIT  |   5 |     .2     .8   11.3     -16     -6      1    -.36
       NGS  |   5 |     .4    3.7    8.7       1     38     -7    -.29
       SIO  |   5 |   -1.2    5.6   13.2      79    -82    113    -.46

       COD  |   6 |     .5    -.1    1.0       1     -3      2    -.48
       EMR  |   6 |    -.9    4.3   14.2     -24     10    -39     .04
       ESA  |   6 |    -.8   -2.1    -.3      -6      1     34    -.30
       GFZ  |   6 |     .1    -.7    -.6      -1    -18      8    -.40
       GRG  |   6 |    1.9   -5.0   10.3     -30    -98    186    -.29
       JPL  |   6 |    2.9   -5.7   12.8     -20     -1      2    -.09
       MIT  |   6 |    -.6   -1.3   10.4     -13     -6      1    -.43
       NGS  |   6 |   -5.3    3.1   15.1     -18     52     14    -.29
       SIO  |   6 |   -2.3    8.3    8.8     108    -49    133    -.55


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

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


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

Most combination statistics are with respect to the combined orbits and
consist of seven parts. The first, Table 1, summarizes all statistics for
the week. It contains means and standard deviations over the week of
satellite ephemeris and clock correction transformation parameters for
each centre (Table 1.2227.a). It also displays the computed satellite
position sigmas for the combined orbits (Table 1.2227.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 2.2227.[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 3.2227.[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 5.2227.0-6). 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 2227 summary.                       (Sep 11, 2022 - Sep 17, 2022)

Table 1.2227.a   GPS week: 2227   MJD: 59833.000-59839.000

         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  664|    0     0     0     2     0   -11  -.02    7    7 |    -467    -181      6     91
        |    0     0     1    14     9    10   .02           |     237     354
emr   80|    0     0     8     7     2    -9   .06   13   13 |  210901     833     12     88
        |    1     1     1     9    10     5   .03           |    2383     637
esa  149|    0     0     0    -6     8   -21   .01    8    8 |   -1277     590      7     83
        |    0     0     1     5    12     8   .02           |     409     509
gfz  232|    0     0    -4    22    -7   -19   .15   11   11 |      65     -47     13     87
        |    0     0     3    11    12    15   .02           |     160     341
grg  120|    5    -3     1     8   -12    -9  -.07   14   11 |      28     -49      8    119
        |    0     0     2    12    12     8   .02           |     125     244
igr  n/a|    0     0    -3    10     3   -18   .02    4    4 |    5515     977     11     94
        |    0     0     0    10     5     5   .02           |    2770     807
jpl   80|    0    -2     3    -6    -1   -10   .11    8    8 |   -3061     844      8     77
        |    0     2     0    12     6     8   .02           |    2386     638
mit  364|    0     0     0   -10     5   -14  -.07    7    6 |    4079     956     23   1939
        |    0     0     1     9    12    20   .02           |    2764     772
ngs  205|    0     0    -2     1    24   -14  -.07   10   10 | -143475 1428700    802   1724
        |    0     1     3    23    31    12   .02           |  377692 3779587
sio  597|    0     0    -2     2   -37   117  -.07    9    8 |     ---     ---    ---    ---
        |    0     0     1    21    31    20   .01           |     ---     ---


Table 1.2227.b   GPS week : 2227   MJD: 59833.000-59839.000   

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

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



Table 2: Daily transformation of each centre to the combined IGS orbit and
         clocks for each day of the week. The transformation displayed is the
         result of the combination after the AC orbits were pre-aligned using
         the SINEX rotations from above. Prior to Wk 1702, AC ERP rotations
         used in the pre-alignment were also displayed.
         WRMS - RMS weighted by the centres SP3 header accuracy codes.
         STA  - Number of stations in the daily solutions.
   
Table 2.2227.0   GPS week: 2227   Day: 0   MJD: 59833.000                            

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  664|   -1     0     1     0    -9   -16  -.04    7    6 |    -292    -483      6     86
emr   80|    0     0     8     8    20   -10   .11   13   13 |  208366    -306     12    111
esa  149|    0     0    -1    -7    27   -23  -.01    7    8 |    -783    -257      8     79
gfz  236|    0    -1    -3    25    10   -12   .11   10   10 |      78    -183     13     90
grg  120|    4    -3    -1    -1   -12   -16  -.05   13   12 |     127    -303      8    117
igr  n/a|    0     0    -3    -4     7   -21   .02    4    4 |    2703    -394     11     93
jpl   80|    1     0     1    -3     5    -6   .09    8    8 |   -5591    -293      8     80
mit  364|    0     0    -1    -9    -7    -1  -.06    8    8 |    1079    -268     26   1907
ngs  203|    0     1     0   -23    59   -18  -.10   10   10 |    -272    -556    839   1723
sio  601|    0     0     0    18   -79   108  -.08    9    9 |     ---     ---    ---    ---

Table 2.2227.1   GPS week: 2227   Day: 1   MJD: 59834.000                            

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  672|   -1     0     1    -7     7   -17  -.05    7    7 |    -353    -472      7     98
emr   80|   -1     1     9    19     4   -12   .08   13   13 |  208072    1501     12     75
esa  150|    0     0    -2    -1    -6    -7   .00    8    8 |   -1453    1264      7    107
gfz  240|    0     0     0    33   -21   -29   .17   11   12 |    -165     294     14     88
grg  123|    5    -2     3     1   -13   -12  -.06   13   12 |     -19    -107      9    115
igr  n/a|    0     0    -3    19     3   -17   .03    4    4 |    2328    1622     12    100
jpl   80|    0    -3     4     0     0   -22   .10    8    8 |   -5872    1520      9     84
mit  364|    0     0    -1   -13    19   -24  -.05    7    7 |    1191    1451     23   2151
ngs  209|    0     0    -4     1    22    -1  -.04    8    9 |    -389    -435   1010   1865
sio  601|   -1     0    -3     8   -51   130  -.08    9    9 |     ---     ---    ---    ---

Table 2.2227.2   GPS week: 2227   Day: 2   MJD: 59835.000                            

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  670|   -1     0     0    -3     4    -9  -.01    8    7 |    -721    -148      6     98
emr   80|    1    -1     6    -7    -8   -10   .09   14   14 |  209503    1343     12     83
esa  149|   -1     0     0    -7     8   -31   .03    8    7 |    -848     420      7     89
gfz  229|   -1     0    -1    17   -12   -46   .14   10   10 |      23     133     13     87
grg  124|    6    -3     0    -1   -18    -1  -.10   24   11 |      67     -94      9    127
igr  n/a|    0     0    -3    14    -5    -8   .03    4    4 |    3897    1342     11     94
jpl   80|    0    -4     2   -16    -6    -9   .10    9    9 |   -4519    1369      8     88
mit  364|    0     1    -1     2    13    12  -.06    6    6 |    2179    1440     23   1844
ngs  208|    0     0     0    32    36   -23  -.08    9    9 |    -671    -204    660   1657
sio  594|    0     1    -1   -15   -41   100  -.08    9    7 |     ---     ---    ---    ---

Table 2.2227.3   GPS week: 2227   Day: 3   MJD: 59836.000                            

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  662|    0     0     2   -15     8   -15  -.02    8    8 |     -86    -640      6     95
emr   80|    0     1     8     3     7    -7   .06   13   13 |  210693    1339     12     84
esa  150|    0     0     0     2    20   -24   .02    8    8 |   -1031     517      7     79
gfz  216|    0     0    -4    15     6   -17   .15   10   10 |       6     119     13     98
grg  123|    5    -2     0    15    12    -5  -.06   12   10 |     -19      30      9    131
igr  n/a|    0     0    -3    20     5   -19   .02    4    4 |    5021    1688     13     90
jpl   80|    0    -4     3     1   -11   -18   .12    8    8 |   -3254    1330      9     71
mit  364|    0     0     0    -4     2     4  -.07    5    5 |    3846    1724     23   1658
ngs  207|    0     0    -2    22    13   -32  -.10    8    8 | -999999 9999999    622   1536
sio  598|    0     0    -2   -22   -60   141  -.07    9    8 |     ---     ---    ---    ---

Table 2.2227.4   GPS week: 2227   Day: 4   MJD: 59837.000                            

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  658|    0     1     0    10     6    -4  -.01    7    7 |    -734     267      6     87
emr   80|    1     1     9     0    -9   -11   .02   13   13 |  212310     880     13     93
esa  150|   -1     0    -1    -7     0   -24   .03    8    8 |   -1665    1015      8     82
gfz  239|   -1     0    -5    38    -7   -14   .17   11   11 |     357    -300     13     88
grg  122|    4    -2     5    14   -22    -4  -.11   12   10 |     127     -50      8    111
igr  n/a|    0     0    -3    11    10   -20   .02    4    4 |    6803    1647     11    102
jpl   80|    0    -3     3     2     7   -10   .14    8    8 |   -1659     894      8     80
mit  364|    0     0     0    -3     3   -24  -.08    7    6 |    5316    1565     22   1831
ngs  204|    0     0     2    -4    35    -3  -.07    8    8 |   -2089    2206    760   1753
sio  599|    0     0    -5   -19   -35    84  -.08    8    7 |     ---     ---    ---    ---

Table 2.2227.5   GPS week: 2227   Day: 5   MJD: 59838.000                            

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  660|    0     0     0    28    -8   -23  -.00    7    7 |    -504      72      6     89
emr   80|   -1     1    10    12     8     1   .05   12   12 |  213392     508     13     81
esa  149|    0     0     0   -11     0   -11  -.01    8    8 |   -1309     297      7     80
gfz  233|    0     0    -4    19   -18     2   .16   11   11 |     156    -642     15     88
grg  116|    5    -3     2     2   -22   -23  -.07   13   12 |     130    -259      9    115
igr  n/a|    0     0    -4    15     0   -14  -.01    4    4 |    8667     405     11     90
jpl   80|   -1     0     3   -31     0     4   .11    8    8 |    -547     521      9     76
mit  364|    0     0     0   -26   -12   -21  -.10    7    7 |    7097     329     22   2186
ngs  203|    0     0    -2    12    44   -20  -.05    8    8 |    -365    -201    875   1667
sio  596|    0     0    -5    12     0   123  -.08   10    9 |     ---     ---    ---    ---

Table 2.2227.6   GPS week: 2227   Day: 6   MJD: 59839.000                            

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  667|    0     0     0     2   -13     8   .01    7    7 |    -581     135      6     89
emr   80|   -1     2     9    14    -5   -13   .01   13   13 |  213977     571     14     93
esa  149|    0     0     0   -10    11   -25  -.01    8    8 |   -1855     878      7     66
gfz  232|    0     0    -9     4   -11   -22   .13   12   13 |       6     246     16     76
grg  118|    4    -3     2    31   -10    -2  -.05   12   11 |    -214     440      9    123
igr  n/a|    0     0    -4    -4     5   -26  -.00    5    5 |    9192     531     11     91
jpl   80|    0     0     4     1    -2    -7   .12    9    9 |      10     571      8     66
mit  364|    0     0     1   -18    18   -47  -.09    6    6 |    7849     453     22   1999
ngs  203|    2    -2    -8   -30   -37    -2  -.06   19   19 |    -541      96    850   1872
sio  593|    0     1    -2    33     9   131  -.06    9    8 |     ---     ---    ---    ---

       
       
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 3.2227.0   GPS week: 2227   Day: 0   MJD: 59833.000                            

        Weighted Average                                            Orbit Dynamics (7 days)
 PRN  |  cod  emr  esa  gfz  grg  igr  jpl  mit  ngs  sio  IGS |   cod  emr  esa  gfz  grg  igr  jpl  mit  ngs  sio   IGS
------+--------------------------------------------------------+---------------------------------------------------------
   1  |    7   10    6   13   12    3    7    8   11    9    3 |    25   29   27   27   28   24   27   26   27   26    25
   2  |    5   12    9    9   12    5    9    8   10    7    3 |    36   41   32   38   38   34   38   38   38   37    36
   3  |    8   10    8    9   10    3    7    5   10    8    2 |    17   27   21   19   19   19   24   18   17   19    19
   4  |    7   16    7   12   19    6   10    8    9    9    3 |    71   72   74   74   70   72   72   74   73   75    72
   5  |    4   11    3    7   10    5    7    6    9    6    2 |    30   34   30   33   29   31   34   30   30   29    30
   6  |    5    8    6   10   15    3    6    7    8    6    2 |    39   41   38   35   44   37   39   37   31   35    38
   7  |    7   12    5   12   19    3    7    6    9    8    3 |    30   29   26   35   22   27   25   28   31   28    27
   8  |    5   13    5   14   11    4    9    8    9    7    3 |    26   30   29   31   27   27   28   24   26   25    26
   9  |    7   11    7    6   26    4    8   11   13    8    3 |    48   50   47   47   48   46   46   46   44   48    46
  10  |    6   11    8    6    6    3    7    8    6    8    2 |    23   30   27   26   24   25   27   22   24   24    24
  11  |    7   17   11   13   18    5    8   11    9   10    4 |    45   45   43   48   53   44   42   44   47   49    45
  12  |    5   15    6    7   10    4    8    7   10   12    3 |    27   26   28   30   27   28   30   26   25   28    27
  13E |    6   12   10   10   13    6    7    8    7   10    3 |    52   53   50   47   52   50   53   53   47   56    51
  14  |    5   11    5   10    9    3    9    6    7    9    2 |    27   30   28   31   31   27   28   30   26   28    27
  15  |    7   13    8   11   12    4    8    8   13    7    3 |    36   36   31   33   34   32   33   35   37   34    33
  16  |    5   21    6    9   11    3    7    8    6    8    3 |    15   21   17   22   14   15   17   16   15   16    15
  17  |    7   10    4    8   14    3    7    7   15    8    3 |    23   26   20   25   26   21   25   24   22   24    22
  18  |    9   16   13   14   14    5   11   10   10   11    4 |    42   41   40   46   47   42   42   43   43   48    42
  19  |    7   15    6   11   13    4    7    9   13    8    3 |    21   21   22   21   22   21   20   21   26   24    20
  20  |    5   11    4    7   10    4    5    7   10    7    2 |    32   34   32   34   32   31   30   31   33   30    31
  21  |    7   11    6    9   15    5    7    7   12    8    3 |    30   32   27   29   36   28   30   30   28   32    29
  22E |   10   11    9    9   11    9    7   14   12   14    4 |   143  142  143  143  143  142  142  140  146  145   142
  24  |    7   21    8    8   10    3    7   10    8   10    3 |   166  161  162  162  166  162  162  160  159  163   162
  25  |    5   12    8    6    9    3   11    9   12    8    3 |    21   32   25   26   21   23   29   19   20   18    22
  26  |    5    8    7   11    8    3    8    6    7    6    2 |    18   25   22   24   18   21   24   18   19   18    20
  27  |    6   12    7   11   10    4    9   10   13    8    3 |    23   29   26   26   24   23   26   21   27   20    23
 X28  |    7   11    6   10    9    3    9    6   13  ---    3 |    18   22   21   21   19   19   22   21   22  ---    19
  29  |    8   15    7   15   10    6    7    9   13    9    3 |    25   25   24   33   30   27   26   25   30   27    26
  30  |    5    7    6    9   15    4    6    6    7    8    2 |    29   27   30   31   30   28   28   29   31   27    29
  31  |    7   12    7    8   11    4    8    8    8   13    3 |    33   33   33   36   34   34   36   32   33   32    32
  32  |    7   11    8   10   11    3    8   10    8   10    3 |    39   46   46   44   44   43   44   44   43   42    42
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |    7   13    7   10   13    4    8    8   10    9      |T   39   41   39   41   40   38   40   38   39   40    38
 WRMS |    6   13    8   10   12    4    8    8   10    9      |NE  35   37   35   37   36   34   36   34   35   35    34
 MEDI |    7   12    7   10   11    4    7    8   10    8      |MD  30   32   29   33   30   28   30   30   30   28    29

Table 3.2227.1   GPS week: 2227   Day: 1   MJD: 59834.000                            

        Weighted Average                                            Orbit Dynamics (7 days)
 PRN  |  cod  emr  esa  gfz  grg  igr  jpl  mit  ngs  sio  IGS |   cod  emr  esa  gfz  grg  igr  jpl  mit  ngs  sio   IGS
------+--------------------------------------------------------+---------------------------------------------------------
   1  |    7   11    7   12   12    3    7    6    7   13    3 |    40   42   44   41   44   40   42   39   39   41    40
   2  |    6   14    9    9   12    6    6    7    6    8    3 |    41   47   39   44   46   41   41   43   43   45    42
   3  |    6   10    9    8    9    4    7    5    7   10    2 |    28   32   33   28   31   30   32   27   27   30    29
   4  |    7   15    8   11   20    4   11    6   10   11    3 |    62   62   66   64   63   63   63   64   63   65    63
   5  |    5   12    5   10    9    4    7    4    5    6    2 |    33   37   32   37   32   33   35   30   33   33    33
   6  |    7    9    8   11   15    4    8    6   10    7    3 |    48   51   52   48   56   49   50   50   46   51    50
   7  |    7   11    9   10   20    5    7    8    9   11    3 |    33   33   33   39   31   32   29   33   33   32    31
   8  |    7   12    8   16   13    4    9    5    9    5    3 |    38   38   42   45   41   40   40   38   40   41    39
   9  |    6    8    7   14   25    3    8    6   10    7    3 |    49   49   52   53   54   50   48   49   48   48    49
  10  |    7    9    8    7    7    4    6    5    9    8    2 |    32   38   35   36   33   34   36   32   35   36    34
  11  |    7   17   13   12   14    5    9    8   12    8    3 |    47   52   49   49   55   49   49   50   49   51    49
  12  |    9   13    5   14   11    3    9    4   11    5    3 |    28   34   26   32   27   27   31   25   32   25    27
  13E |    7   14   12   18   17    5    9    6    7   10    3 |    58   61   58   58   64   58   58   59   56   59    58
  14  |    4   15    8   10    9    5    9    6    6    8    3 |    19   22   22   28   25   21   19   24   22   26    21
  15  |    7   12    9   13   12    5    7    7    6   10    3 |    46   47   41   46   45   43   44   44   46   45    44
  16  |    6   19    6    9   11    2    9    8   12    9    3 |    25   29   28   30   25   26   27   25   24   26    25
  17  |    6   16    5    9   12    3    6    6    8    7    2 |    38   37   38   42   41   38   38   37   41   38    38
  18  |   10   17   14   11   13    5   10    8    8    8    3 |    39   43   39   41   44   40   41   40   38   42    39
  19  |    8   13    6   10   13    4    6    7    6    6    3 |    28   28   33   31   34   31   29   29   30   32    29
  20  |    5   10    4    6   11    4    7    6    8    6    2 |    38   42   39   40   40   38   37   38   39   38    38
  21  |    8    9    7   10   15    3    7    5    7    9    2 |    37   39   39   36   45   37   40   38   38   39    38
  22  |    7   11    9    6   13    4    9    9    7   12    3 |    90   91   89   89   90   90   88   89   89   93    89
  24  |   11   15    8   10   10    4    9    8   10   11    3 |   187  189  188  189  192  190  190  186  191  183   187
  25  |    7   13    7    9    9    3    9    6   10    7    3 |    30   39   33   36   31   32   35   29   30   29    31
  26  |    4   11    7    8    7    3    9    7    6   10    2 |    29   33   30   33   28   30   33   27   28   28    29
  27  |    5   14    9   12    9    4   10    6    8    7    3 |    33   38   38   39   36   36   38   33   37   36    35
 X28  |   10    9    6    9   10    3    7    5   10  ---    3 |    27   30   30   32   28   28   31   25   30  ---    28
  29  |    6   17    7   12   10    4    6    7    7    7    3 |    40   44   39   43   43   40   40   39   44   39    40
  30  |    5    9    9   10   15    4    7    6    8    8    3 |    41   40   43   46   43   41   35   40   43   36    41
  31  |    9   15    6   10    9    5    9    9    8   11    3 |    41   41   38   41   41   38   40   38   39   42    39
  32  |    6   12    8    8   15    4    9    7    8   10    3 |    48   52   51   49   51   51   50   49   51   51    49
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |    7   13    8   11   13    4    8    7    8    9      |T   44   47   45   47   47   45   45   44   45   46    44
 WRMS |    7   13    8   12   12    4    8    7    9    9      |NE  42   45   43   45   45   43   43   42   43   43    42
 MEDI |    7   12    8   10   12    4    8    6    8    8      |MD  38   40   39   41   41   38   40   38   39   39    39

Table 3.2227.2   GPS week: 2227   Day: 2   MJD: 59835.000                            

        Weighted Average                                            Orbit Dynamics (7 days)
 PRN  |  cod  emr  esa  gfz  grg  igr  jpl  mit  ngs  sio  IGS |   cod  emr  esa  gfz  grg  igr  jpl  mit  ngs  sio   IGS
------+--------------------------------------------------------+---------------------------------------------------------
   1  |    7    9    9   11   12    3    8    5    8    8    3 |    26   27   27   26   26   24   27   23   24   24    24
   2  |    5   12   10   10   12    5    9    6    9    9    3 |    24   28   24   30   27   26   27   27   28   25    25
   3  |    6    9    8    9    9    4    7    5    5    8    2 |    20   25   24   20   21   21   26   17   20   20    20
   4  |    9   16    8   14   18    5    9    6   11    8    3 |    52   51   54   57   54   54   56   53   50   54    53
   5  |    4   11    5    9    8    3    7    5    6    6    2 |    21   26   20   23   22   21   25   19   24   19    21
   6  |    8    7    7    9   14    4    7    4    7    6    2 |    27   27   26   28   28   24   25   22   26   25    24
   7  |    7   13    6   10   16    5    8    6    8   11    3 |    28   29   27   30   25   27   27   25   30   27    26
   8  |    5   12    6    8   11    3    8    5    8    9    2 |    23   27   24   25   23   22   24   21   21   21    22
   9  |    7    9    7    7   23    4    7    5   10    9    3 |    33   33   35   33   36   33   33   30   34   32    32
  10  |    7    9    8   10    8    4    6    5   10    5    2 |    18   22   24   25   18   20   23   16   21   17    19
  11  |    7   15   13    9   14    5    8    5   11   10    3 |    21   26   24   25   30   23   26   24   25   27    23
  12  |    6   19    6    7   11    4    8    4    9    7    3 |    31   26   28   31   32   30   32   29   33   32    30
  13E |    6   12   12   13   18    6   10    8    6    8    3 |    53   56   53   55   52   54   55   53   58   53    53
  14  |    6   13    6    8   10    3    9    6    7    8    2 |    26   27   28   30   29   25   26   26   28   25    26
  15  |    7   15    9   15   10    5    8    9    9    9    3 |    26   28   20   22   24   22   26   26   24   24    23
  16  |    4   23    6    7    8    2    6    6    8    7    3 |    19   21   21   24   20   20   23   17   20   20    19
  17  |    8   11    6    8   12    3    7    5    8    9    2 |    25   24   23   26   28   24   28   23   27   25    24
  18  |    9   18   13   14   10    5   11    8   11    9    4 |    23   23   21   25   27   21   27   25   25   27    23
  19  |   10   17    6   10   12    3    8    6    7    8    3 |    26   28   30   29   33   29   28   26   32   30    28
  20  |    4   11    4    7   11    3    8    5    7    8    2 |    21   24   21   22   20   20   21   19   21   21    20
  21  |   10    8    5   11   14    5    9    6    8    9    3 |    26   24   22   23   26   22   25   22   23   26    23
  22  |    8   10    8    7   12    5    9    8    7   12    3 |    28   33   30   31   32   31   29   33   31   28    29
  24  |   22   25   12   17  112    7   24   15   15   19    7 |   492  494  488  492  479  492  492  488  494  491   491
  25  |    5   11    8    5    6    5    9    5    9    7    2 |    17   26   24   21   19   20   25   17   17   17    19
  26  |    6    8    6    9    6    3    7    6    5    6    2 |    19   24   23   24   20   20   26   17   19   20    20
  27  |    4   12    8    8    8    4    8    5    9    9    2 |    28   32   30   30   29   29   33   26   27   26    28
 X28  |   10   13    7   11    9    4    7    5    8  ---    3 |    18   23   24   21   18   20   23   16   23  ---    19
  29  |    8   20    7    9   11    5    8    7   13    8    3 |    18   19   19   23   23   20   20   21   24   20    19
  30  |    5   10    7    9   13    3    8    4    6   10    2 |    26   25   28   27   25   26   36   24   27   27    25
  31  |    7   13    7    8    9    4    8    6    8    8    2 |    26   28   26   29   28   27   30   25   25   26    25
  32  |    7   11    8    9   15    4    8    6   10    9    3 |    22   27   27   26   25   24   25   23   26   22    23
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |    8   14    8   10   24    4    9    6    9    9      |T   40   43   41   43   41   41   43   39   42   41    40
 WRMS |    7   14    7   10   11    4    9    6    9    7      |NE  40   42   41   43   41   40   43   39   42   41    40
 MEDI |    7   12    7    9   11    4    8    6    8    8      |MD  26   27   24   26   26   24   26   24   25   25    24

Table 3.2227.3   GPS week: 2227   Day: 3   MJD: 59836.000                            

        Weighted Average                                            Orbit Dynamics (7 days)
 PRN  |  cod  emr  esa  gfz  grg  igr  jpl  mit  ngs  sio  IGS |   cod  emr  esa  gfz  grg  igr  jpl  mit  ngs  sio   IGS
------+--------------------------------------------------------+---------------------------------------------------------
   1  |    9   12    8    9   11    3    9    4    7    6    2 |    27   29   25   23   27   22   25   22   23   23    23
   2  |    6   12    9    9   11    5    9    6    8   10    3 |    26   31   26   28   28   25   28   26   25   26    26
   3  |    7    8    7   10    8    4    7    6    6   10    2 |    19   24   21   17   20   19   25   15   16   18    18
   4  |    8   17    7   11   17    4    9    5    8    7    3 |    48   43   49   52   53   48   49   50   52   52    49
   5  |    6    9    4    8   18    3    8    3    7    8    2 |    25   28   23   25   26   25   30   23   21   23    23
   6  |    7    9    7    8   11    4    6    4    8    7    2 |    27   29   28   32   32   25   28   24   25   25    25
   7  |    9   10    8   13   15    4    7    5   11    7    3 |    28   27   25   33   25   25   26   24   31   24    25
   8  |    7   11    9   14   11    5    8    5    8   10    3 |    23   23   23   23   22   22   23   19   20   22    20
   9  |    8   10    6   10   20    4    6    3    9    6    3 |    22   22   24   20   32   22   24   21   28   22    22
  10  |    7    9    8    6    7    3    7    4    4    8    2 |    19   23   24   22   18   20   24   16   20   19    19
  11  |    8   20   14   14   12    5    9    5   13   10    4 |    25   26   22   29   30   24   25   23   27   26    24
  12  |    6   16    4    7   11    4    7    4    8    6    2 |    27   24   27   30   24   28   31   26   28   27    27
  13  |    7   15   12   11   23    7   11    8    7   10    4 |    71   76   74   76   74   73   74   73   77   72    73
  14  |    5   13    6    8   10    4   10    5    6   11    2 |    17   20   20   22   24   17   17   22   18   26    19
  15  |    8   14    9   12    9    5    8    6    7   12    3 |    26   27   21   27   25   23   25   26   26   31    24
  16  |    5   21    6    9    9    3    5    5    5   10    2 |    15   15   15   19   16   15   14   14   13   16    13
  17  |   10   14    5   10   12    3    5    4    7    6    2 |    25   22   21   26   26   23   24   21   24   23    22
  18  |   10   17   14   12   10    5   13    7    9    9    4 |    28   24   24   30   31   26   29   30   28   32    27
  19  |   13   18    5    9   13    3    6    4   10    5    3 |    19   19   19   22   25   19   19   17   21   18    18
  20  |    6   12    4    5   10    3    9    5   12    7    2 |    18   22   20   21   18   19   20   18   20   19    18
  21  |   12   10    7   14   12    5    7    6    8    9    3 |    28   24   22   25   26   22   25   23   23   24    23
  22  |    7   11    8    7   11    5    7    8    6   12    3 |    20   23   21   23   22   21   22   23   24   24    21
 X23  |    7   33  ---   12  ---   10  ---    7   11  ---    6 |    16   36  ---   23  ---   18  ---   17   17  ---    16
  24  |    6   21    6   14   11    4    7    8    8    9    3 |   265  261  267  264  262  265  269  269  264  270   267
  25  |    6   11    7    6    8    4    8    5    6    6    2 |    17   26   24   25   18   20   26   17   16   19    19
  26  |    3    7    8   10    6    4    9    5    6    8    2 |    19   22   20   22   20   20   25   17   18   19    19
  27  |    6   11    8   13    7    4    9    5    9    8    3 |    25   25   24   23   23   23   27   20   24   21    22
 X28  |   12   11    6    9    9    3    7    5    6  ---    3 |    18   22   20   22   19   19   24   17   20  ---    18
  29  |    9   17    7    9    9    4    8    6    9    7    3 |    18   18   18   22   22   19   21   18   22   18    18
 X30  |    5   10    8   19   14    3  ---    3    6    8    3 |    30   29   32   37   28   30  ---   28   32   29    29
  31  |    7   11    7   10   11    4    8    4    6   11    2 |    26   27   26   28   27   28   31   25   29   29    26
  32  |    9    9    8    8   13    3    8    6    7   13    3 |    23   23   25   22   24   22   24   20   23   24    22
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |    8   13    8   10   12    4    8    5    8    9      |T   32   34   33   34   34   32   35   31   32   34    31
 WRMS |    8   13    8   10   10    4    8    5    8    8      |NE  31   33   32   33   33   31   34   30   31   33    30
 MEDI |    7   11    7   10   11    4    8    5    7    8      |MD  25   24   24   23   25   22   25   22   23   24    22

Table 3.2227.4   GPS week: 2227   Day: 4   MJD: 59837.000                            

        Weighted Average                                            Orbit Dynamics (7 days)
 PRN  |  cod  emr  esa  gfz  grg  igr  jpl  mit  ngs  sio  IGS |   cod  emr  esa  gfz  grg  igr  jpl  mit  ngs  sio   IGS
------+--------------------------------------------------------+---------------------------------------------------------
   1  |    8   14    8   12   12    4    7    6    6    9    3 |    35   37   35   34   35   32   34   31   33   34    32
   2  |    7   11   10    6   11    5    7    6    8    8    3 |    38   41   35   38   40   36   37   39   41   35    37
   3  |    6    7    8    8    9    2    7    7    7    7    2 |    25   29   29   26   25   26   30   25   26   27    26
   4  |    8   18    7   10   17    5   10   10   10    8    3 |    51   49   53   53   55   53   54   55   54   57    53
   5  |    5    9    4    8    8    3    7    5    8    9    2 |    30   33   30   31   31   30   33   29   30   30    30
  X6  |    6    8    6  ---   14    4    7    4  ---    7    3 |    38   39   38  ---   44   38   38   37  ---   37    37
   7  |    7   11    7   14   17    4    8    8    7   11    3 |    33   30   29   38   31   29   31   28   32   38    30
   8  |    7   12    9   10   10    4    8    7    6    7    3 |    33   35   36   39   35   35   35   33   35   33    34
   9  |    7   12    6   10   21    4    7    4   11    5    3 |    36   35   38   35   42   35   35   34   39   35    35
  10  |    4    9    8    6    7    3    8    5    6    5    2 |    26   32   31   32   27   29   32   28   29   29    28
  11  |    9   18   15   16   12    6    9    6    9    9    4 |    44   46   43   48   48   43   44   48   41   44    44
  12  |    5   15    6    7   10    3    6    4    7    6    2 |    30   28   29   33   26   30   34   30   29   30    30
  13  |    7   11   11   20   14    5   10    9    9    6    3 |    46   48   46   46   46   46   47   48   43   47    45
  14  |    5   12    8   13    9    5    9    7    7    9    3 |    23   23   26   29   29   22   24   27   25   31    25
  15  |    8   14   10   14    7    6    6    8    8   10    3 |    38   40   33   35   35   35   37   37   36   36    35
  16  |    6   21    7    9    9    3    7    7    9    8    3 |    25   24   28   29   24   25   24   26   26   26    25
  17  |    7   11    7   12   13    4    6    6    8    6    2 |    34   32   31   37   36   33   32   32   31   32    32
  18  |   11   18   14   10   12    5   11   10    9   11    4 |    42   42   39   44   42   41   39   44   41   46    41
  19  |    9   15    6    8   13    4    6    4    9    6    3 |    27   27   29   28   31   29   28   27   27   28    27
  20  |    5   10    5    8    9    3    8    6    7    7    2 |    34   35   33   36   33   34   34   34   32   33    33
  21  |   13   13   10   16   16    5    8    7   11    8    4 |    39   39   36   39   40   36   38   37   38   35    36
  22  |    8    9    8    7   10    5    6    9    9    9    3 |    57   61   59   61   62   60   59   64   60   64    60
 X23  |    8   10    6   15    8    4  ---    6   10  ---    3 |    20   25   13   34   16   23  ---   27   26  ---    24
  24  |    8   15    8   11   11    2    8    9    8    6    3 |   303  300  300  303  301  301  302  301  301  300   301
  25  |    5    9    8    6    7    4    8    6    7    6    2 |    31   37   33   35   30   32   34   30   26   31    31
  26  |    4    9    8    7    5    4    8    5    5    9    2 |    30   33   34   35   30   32   34   32   29   33    31
  27  |    7   12    8   10    8    4    9    6    7    7    2 |    28   31   32   32   31   30   34   29   31   29    30
 X28  |    8    9    6   12    9    3    6    7    8  ---    3 |    29   31   29   33   30   29   31   28   25  ---    28
  29  |    8   21    8   10   10    4    8    9    7    5    3 |    34   34   34   35   35   34   33   35   35   33    33
 X30  |    6   13    7   19   13    3  ---    6    6  ---    4 |    34   35   35   41   38   34  ---   32   35  ---    34
  31  |    7   10    7    7   11    3    8    5    6    8    2 |    36   37   36   40   36   38   39   37   37   40    37
  32  |    7    8    8    6   13    2    7    7    8    7    2 |    37   41   41   40   42   40   40   40   41   41    39
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |    7   13    8   11   12    4    8    7    8    8      |T   42   44   42   45   43   42   44   43   43   45    42
 WRMS |    7   13    8   11   10    4    8    6    8    7      |NE  42   43   42   45   43   42   44   42   42   44    41
 MEDI |    7   11    8   10   10    4    8    6    8    7      |MD  34   35   34   35   35   34   34   32   33   34    33

Table 3.2227.5   GPS week: 2227   Day: 5   MJD: 59838.000                            

        Weighted Average                                            Orbit Dynamics (7 days)
 PRN  |  cod  emr  esa  gfz  grg  igr  jpl  mit  ngs  sio  IGS |   cod  emr  esa  gfz  grg  igr  jpl  mit  ngs  sio   IGS
------+--------------------------------------------------------+---------------------------------------------------------
   1  |    7   15    6   10   15    4    7    7    8   12    3 |    31   37   33   33   31   32   36   32   33   31    31
   2  |    7   11   10   10   12    5    8    7    6   11    3 |    30   31   26   33   29   27   29   30   28   27    28
   3  |    6    8    7    8   10    3    7    5    6    9    2 |    26   32   29   28   27   28   32   26   27   26    27
   4  |    8   16    8   11   19    5    9    7    9    6    3 |    56   54   56   58   58   56   56   56   56   57    55
   5  |    4    9    6    8    9    4    7    9    6    7    2 |    26   29   26   26   24   26   29   24   26   26    25
  X6  |    5    8    6   12   14    4    7    5  ---    7    3 |    25   25   24   21   29   22   26   23  ---   22    23
   7  |    8   10    8   19   20    6    8   10   10   10    4 |    42   40   39   48   36   39   41   38   43   40    39
   8  |    7   12   11   14   11    5    9    6    6    9    3 |    29   34   33   35   30   31   34   32   32   28    31
   9  |    6    7    6    9   22    4    7    5   11    7    3 |    43   43   42   40   45   41   43   40   42   42    41
  10  |    7   10    8    8    9    3    8    5    7    7    2 |    23   28   28   29   24   24   26   24   24   25    24
  11  |    9   17   16   13   12    6   10    6   10   14    4 |    22   25   19   21   29   19   24   23   20   27    21
  12  |    4   16    5    8    9    4    6    6   10    7    2 |    43   28   42   46   45   44   46   43   44   44    43
  13  |    7   13   10   11   19    5   10    7    9    9    3 |    37   40   35   35   39   35   40   36   34   36    36
  14  |    6   11    8   12   10    3    8    7    6   13    3 |    33   32   32   39   34   33   34   34   32   38    33
  15  |    7   14    7   11   11    5    8   11    6    9    3 |    27   29   26   29   26   26   26   27   27   25    25
  16  |    6   19    8    9    9    3    6   11    9    8    3 |    33   35   36   41   37   36   35   37   38   37    35
  17  |    8    8    5   10   13    3    5    6    8    8    2 |    31   28   28   36   32   29   31   28   32   30    29
  18  |   10   19   15   12   11    5   12    9   11   14    4 |    21   27   22   19   27   19   25   24   20   27    21
  19  |    8   11    5    9   13    4    7    8    8    7    3 |    34   33   32   37   33   33   34   34   35   35    33
  20  |    6   11    4    7   12    4    8    7   10    9    3 |    26   28   26   26   24   25   26   25   25   26    25
  21  |    9   12   10   14   15    5    8    7   10    8    3 |    25   27   22   31   24   22   26   24   22   24    23
  22  |    8    9    7   10   11    5    8    7    8    9    3 |    40   41   39   39   41   38   39   39   37   41    39
 X23  |    7   10    7   14    9    3  ---    7   13  ---    4 |    22   24   18   32   18   22  ---   24   25  ---    23
  24  |    6   18    7   10    8    4    9    7    9    8    3 |   287  290  286  288  287  288  290  287  286  288   287
  25  |    7   10    8    8    6    4    8    5    8    8    2 |    23   31   26   28   22   23   29   22   21   23    23
  26  |    5    7    7    9    6    3    7    6    9   10    2 |    28   32   31   32   30   29   30   28   27   31    28
  27  |    6   10   10   10    7    5    8    6    8   11    3 |    30   34   33   33   32   31   34   32   32   29    31
 X28  |    9    9    5   17   11    3    7    6   10  ---    3 |    24   26   23   32   22   23   28   22   24  ---    23
  29  |    8   15    7   13   10    5    7    7    7    9    3 |    24   25   24   26   27   24   26   26   26   26    24
  30  |    4    9    8   16   15    4    7    7    8   10    3 |    45   45   45   49   43   45   39   44   45   45    45
  31  |    7   10    7   11   12    4    8    8    8   15    3 |    33   34   32   39   35   33   36   35   36   35    33
  32  |    8    7    7   13   12    3    9   10    8    9    3 |    28   28   29   31   30   26   30   23   28   28    27
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |    7   12    8   11   13    4    8    7    8   10      |T   38   40   38   41   39   38   41   38   39   40    38
 WRMS |    7   12    8   11   12    4    8    7    8    9      |NE  39   40   38   42   39   38   41   38   39   40    38
 MEDI |    7   10    7   10   11    4    8    7    8    9      |MD  29   31   29   33   30   29   32   28   32   29    28

Table 3.2227.6   GPS week: 2227   Day: 6   MJD: 59839.000                            

        Weighted Average                                            Orbit Dynamics (7 days)
 PRN  |  cod  emr  esa  gfz  grg  igr  jpl  mit  ngs  sio  IGS |   cod  emr  esa  gfz  grg  igr  jpl  mit  ngs  sio   IGS
------+--------------------------------------------------------+---------------------------------------------------------
   1  |    5   12    7   10   11    5    8    4   10    9    2 |    28   32   29   26   30   26   29   27   29   28    27
   2  |    8   11    9    9   11    6    8    5   13    8    3 |    35   39   32   35   38   33   35   36   34   35    34
   3  |    5    9    7    9    9    3    6    4   12    8    2 |    19   25   20   20   19   19   25   17   20   18    19
   4  |    7   14    8   14   18    5   11    7   16    8    3 |    78   77   80   81   79   80   80   82   81   80    79
   5  |    4    8    5    9    9    4    7    5   13    6    2 |    33   36   32   32   34   32   37   31   32   32    32
   6  |    6   10    6   11   12    4    7    5   12    7    2 |    36   40   35   37   43   34   37   35   39   34    35
   7  |    9   10    6    9   19    6    9    8   15    9    3 |    36   33   31   33   29   30   34   33   35   33    31
   8  |    6   13    8   17    9    6   10    5    9    8    3 |    28   30   35   35   28   32   32   31   32   33    30
   9  |    8   10    8   10   20    4    8    5   69    8    3 |    54   55   55   53   55   55   56   54   75   53    54
  10  |    6   11    7    9    6    5    7    5   12    6    2 |    17   25   23   23   18   19   23   16   20   15    18
  11  |    9   18   16   15   12    7   10    5   21    8    4 |    44   43   39   48   51   43   43   46   49   48    44
 X12  |    5  ---    6    9    8    5    9    4   10    6    2 |    37  ---   35   37   37   36   39   36   36   39    36
  13  |    7   14    9   12   27    5    8    8   10    8    4 |    54   56   54   52   50   53   58   54   53   55    53
  14  |    6   15    7   13    9    4   11    7   10    8    3 |    35   36   36   39   38   35   37   39   34   40    36
  15  |    6   14    6   13    9    5    8    5   11    7    3 |    37   41   36   39   37   35   38   36   40   35    36
  16  |   10   20    6   10    8    5    8    7   34    9    4 |    24   20   22   23   22   21   23   24   39   26    21
  17  |    9   13    5   19   12    5    7    6   12    9    3 |    26   26   22   36   27   26   27   25   28   27    25
  18  |    9   22   16   16   11    6   13   10   16   12    4 |    43   38   36   44   45   40   40   44   41   46    41
  19  |    9   16    6   11   13    4    7    6   11   11    3 |    28   27   28   30   29   28   27   29   30   31    27
  20  |    6   11    5    7   11    3    7    6   16   13    3 |    31   30   30   31   30   27   27   29   35   26    28
  21  |    6   10    6   12   13    6    9    3   13    8    3 |    27   27   23   26   32   24   27   27   29   27    26
  22  |    5    9    7    8    9    6   10    9   14    9    3 |    63   65   66   65   65   66   65   66   60   65    64
 X23  |    6    9    7   13    7    5    8    6   11  ---    3 |    12   15   19   25   18   14    6   15   17  ---    14
  24  |    6   16    8   13    8    7    8    7   10   10    3 |   301  302  299  300  302  300  301  300  301  299   300
  25  |    5    8    8    9    5    5    9    6   10    8    2 |    17   25   24   24   17   20   24   17   18   17    19
  26  |    6    9    8   10    6    4    9    5   10    8    2 |    21   22   23   21   20   21   24   20   21   22    20
  27  |    6   11    8   19    6    6    9    5   11    8    3 |    25   30   30   28   25   28   31   27   31   27    27
 X28  |    8    8    4   14    9    5    8    8   12  ---    3 |    20   23   22   24   18   19   25   20   27  ---    20
  29  |    8   20    7    7   10    5    7    7   12    7    3 |    23   28   25   24   29   24   24   28   31   26    25
  30  |    6   11    8   10   15    3    8    5   16    7    3 |    44   43   44   44   41   42   43   43   43   45    42
  31  |    8   14    6   13   10    6    9    6   13    9    3 |    34   35   33   36   37   34   36   35   39   35    34
  32  |    6    7    8   11   10    5    9    9   12   10    3 |    43   45   48   46   47   46   46   45   46   42    44
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |    7   13    8   12   12    5    9    6   19    9      |T   42   44   42   44   43   41   43   42   45   44    41
 WRMS |    7   13    8   13   11    5    9    6   19    8      |NE  41   43   41   43   42   40   42   41   44   43    40
 MEDI |    6   11    7   11   10    5    8    6   12    8      |MD  33   33   32   35   32   32   34   31   34   33    31



Table 4: Precise Navigation Summary.

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

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

Table 4.2227   GPS week: 2227   MJD: 59833.0-59839.0

CENT| CLK EPO  |        BRUX       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3029 |U    8    10    22 |U    8    13    30 |U    9    10    24 |
emr | emr 3014 |U   19    18    38 |U   11    19    55 |    16    22    54 |
esa | esa 3017 |    11    14    33 |U    8    19    40 |    12    11    35 |
gfz | gfz 3014 |U   10    11    26 |U    7    13    27 |U    9     8    21 |
grg | grg 3014 |U   10    14    30 |U    7    14    31 |    10     8    25 |
igr | igr 3025 |     8    10    22 |     7    15    31 |     9     9    23 |
igs | igs 3014 |     7    10    20 |     7    14    30 |     9     9    23 |
jpl | jpl 2962 |U   13    18    35 |U   10    19    49 |    13    12    34 |
mit | mit 3030 |U    8     8    19 |U    7    12    26 |U    8     8    21 |



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 5.2227.0   GPS week: 2227   Day: 0   MJD: 59833.0

CENT| CLK EPO  |        BRUX       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 2976 |     9     9    24 |     8    16    37 |     9    10    28 |
emr | emr 2976 |    15    14    36 |    13    19    57 |    13    22    48 |
esa | esa 2976 |    11    13    35 |     8    22    45 |    11    11    33 |
gfz | gfz 2976 |     9     8    20 |     7    16    34 |     8     9    23 |
grg | grg 2976 |    10    11    26 |     6    16    37 |    10    10    28 |
igr | igr 2976 |     8    10    20 |     7    18    36 |     8     9    23 |
igs | igs 2976 |     8    10    20 |     8    16    37 |     8     9    24 |
jpl | jpl 2976 |     9    19    31 |    10    21    55 |    11    11    31 |
mit | mit 2976 |    10     8    16 |     8    14    34 |     7     7    25 |

Table 5.2227.1   GPS week: 2227   Day: 1   MJD: 59834.0

CENT| CLK EPO  |        BRUX       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 2976 |     7     7    24 |     6    15    23 |    10    10    21 |
emr | emr 2976 |    23    22    42 |     9    19    42 |    21    20    50 |
esa | esa 2976 |    11    13    39 |     7    20    34 |    16     9    34 |
gfz | gfz 2976 |     9     7    22 |     6    14    24 |    10     6    19 |
grg | grg 2976 |     8     8    24 |     6    16    30 |     9     8    24 |
igr | igr 2976 |     7     8    26 |     7    16    27 |    11     8    22 |
igs | igs 2976 |     7     9    23 |     6    14    25 |    11     7    21 |
jpl | jpl 2976 |    13    17    35 |    10    19    41 |    15     8    30 |
mit | mit 2976 |     7     7    20 |     7    14    23 |     9     7    22 |

Table 5.2227.2   GPS week: 2227   Day: 2   MJD: 59835.0

CENT| CLK EPO  |        BRUX       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 2976 |     8     7    20 |     7    14    28 |    10     9    26 |
emr | emr 2976 |    31    20    44 |    11    17    54 |    16    17    63 |
esa | esa 2976 |    10    14    33 |     7    20    37 |    13    10    36 |
gfz | gfz 2976 |     8     5    17 |     7    12    28 |     9     6    22 |
grg | grg 2975 |     8     9    18 |     6    15    32 |    10     6    28 |
igr | igr 2976 |     7     9    20 |     7    16    31 |    10     8    26 |
igs | igs 2976 |     8     9    18 |     7    14    28 |     9     7    27 |
jpl | jpl 2976 |    27    22    38 |    10    20    42 |    14    12    43 |
mit | mit 2976 |     8     6    14 |     7    12    28 |     8     9    25 |

Table 5.2227.3   GPS week: 2227   Day: 3   MJD: 59836.0

CENT| CLK EPO  |        BRUX       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3061 |    10    11    25 |     8    13    30 |     8    10    19 |
emr | emr 3057 |    17    21    31 |    13    18    41 |    14    25    54 |
esa | esa 2976 |    17    15    35 |     7    21    39 |    12    12    34 |
gfz | gfz 3057 |    11    13    25 |     6    14    29 |     9     9    14 |
grg | grg 2964 |    11    17    30 |     6    14    31 |     9     7    21 |
igr | igr 3040 |    10    10    21 |     7    16    31 |     9    10    19 |
igs | igs 3055 |    10    10    22 |     7    14    29 |     8     9    20 |
jpl | jpl 2880 |    16    15    38 |    12    20    46 |    11    10    31 |
mit | mit 3072 |    10    10    25 |     6    12    27 |     8     8    16 |

Table 5.2227.4   GPS week: 2227   Day: 4   MJD: 59837.0

CENT| CLK EPO  |        BRUX       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3072 |     8    11    19 |     9    11    36 |     9    13    22 |
emr | emr 3072 |    15    20    36 |    11    19    66 |    17    26    56 |
esa | esa 3072 |    10    16    29 |     8    18    44 |    10    12    33 |
gfz | gfz 2976 |    14    15    43 |     8    12    29 |     9     9    23 |
grg | grg 3066 |    15    18    47 |     7    13    32 |    11    10    23 |
igr | igr 3072 |     7    10    20 |     7    15    35 |     9    12    22 |
igs | igs 3072 |     7    10    18 |     8    13    34 |     8    11    21 |
jpl | jpl 2880 |    10    17    33 |    11    18    56 |    12    18    32 |
mit | mit 3072 |     8     8    18 |     7    11    25 |     8    11    17 |

Table 5.2227.5   GPS week: 2227   Day: 5   MJD: 59838.0

CENT| CLK EPO  |        BRUX       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3070 |     7    11    19 |     9    11    26 |     8     9    23 |
emr | emr 3070 |    15    18    36 |    12    18    60 |    15    19    46 |
esa | esa 3072 |     8    15    30 |     8    17    38 |    12    10    35 |
gfz | gfz 3070 |     8     9    23 |     8    12    26 |     8     6    19 |
grg | grg 3070 |     7    14    24 |     9    12    28 |    10     7    21 |
igr | igr 3068 |     6    10    22 |     8    13    28 |     9     8    23 |
igs | igs 2976 |     6    10    19 |     8    12    29 |     9     7    22 |
jpl | jpl 2976 |    11    20    35 |    11    19    56 |    14    11    33 |
mit | mit 3072 |     6     9    16 |     8     9    21 |     8     7    16 |

Table 5.2227.6   GPS week: 2227   Day: 6   MJD: 59839.0

CENT| CLK EPO  |        BRUX       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3072 |     9    12    24 |     9    11    30 |    11    10    30 |
emr | emr 2976 |    14    15    44 |    13    23    68 |    19    23    59 |
esa | esa 3072 |     9    15    32 |     7    16    43 |    13    11    39 |
gfz | gfz 3072 |    15    19    34 |     8    12    24 |    11     8    31 |
grg | grg 3071 |    12    21    38 |     9    13    26 |    11     7    29 |
igr | igr 3072 |     8    11    26 |     7    14    29 |    10     9    28 |
igs | igs 3072 |     8    11    23 |     8    13    30 |    10     9    27 |
jpl | jpl 3072 |     8    18    34 |    11    17    51 |    14    14    35 |
mit | mit 3072 |     9    10    20 |     8    11    23 |     9     8    25 |


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 6.2227   GPS week: 2227   MJD: 59833.500-59839.500

                                                         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     -11      54     -63      4 |       8     20
            |       8      17      40      53      4 |       2
emr   uuuuu |      14       6     -89     157     -8 |      47     51
            |      14      22      95      55     20 |       4
esa   uuuuu |      18       5      58     204      2 |      29     33
            |      13       8      41      41      6 |       3
gfz   uuuuu |      -2     -36      78     -25     -1 |      35     39
            |      10      15      76      51      6 |       3
grg   uuuuu |      20     -15       9     -38     -1 |       0     16
            |       9      11      31      60      2 |       2
igr   xxxxx |       2     -10      47      26     -2 |       3     18
            |       6       9      25      18      3 |       2
irf   xxxxx |      -9       7     -20     -27     -5 |       1     17
            |       7       6      23      23      2 |       2
jpl   uuuuu |       2      14      -3     -17     10 |      36     40
            |      18      18      57      26     12 |       3
mit   uuuuu |     -20      26     -29    -101     -6 |      23     28
            |       5      14      52      38      3 |       2
ngs   uuuuu |      -2      -6     -92      -7      0 |      13     21
            |      37      29     121      87      5 |       2
sio   xxxxx |      74     -78    -107    -263     -1 |      41     44
            |      27      16      99      86      6 |       3


Table 7.2227.0   GPS week: 2227   Day: 0   MJD: 59833.500

                                                         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 |      13     -22      37    -136     -4 |      10     17
emr   uuuuu |       2      25     -89     178     20 |      43     46
esa   uuuuu |      10       1      48     162      9 |      27     30
gfz   uuuuu |      -4     -36     -72     -34      2 |      35     37
grg   uuuuu |      26     -15      53    -136     -3 |       4     13
igr   xxxxx |       6       2      84      36     -3 |       6     14
irf   xxxxx |     -15      17     -42     -19     -4 |       4     13
jpl   uuuuu |      14       9      -4     -47     -1 |      35     37
mit   uuuuu |     -20      43     -64     -52      0 |      25     28
ngs   uuuuu |     -43      -7      38     121      3 |      14     19
sio   xxxxx |      67     -79      56    -212      9 |      40     42

Table 7.2227.1   GPS week: 2227   Day: 1   MJD: 59834.500

                                                         AC LOD  AC LOD
CENT  FLAG  |   Xpole   Ypole     Xrt     Yrt    LOD |    BIAS  BIAS RMS
            |   [uas]   [uas]   [uas/d] [uas/d]  [us]|    [us]    [us]
------------+----------------------------------------+------------------
cod   uuuuu |      -8       1     125     -79      1 |       4     14
emr   uuuuu |      23      26    -211     138      8 |      42     44
esa   uuuuu |      36      -3     109     262      3 |      23     27
gfz   uuuuu |       4     -55     111     -49      7 |      30     33
grg   uuuuu |      25       3     -13     -61     -4 |      -2     13
igr   xxxxx |       6     -21      30      20      1 |       0     14
irf   xxxxx |      -7      11      -2       7     -2 |      -1     14
jpl   uuuuu |     -12      12     -49     -38      7 |      30     33
mit   uuuuu |     -29      29      35     -58     -6 |      20     24
ngs   uuuuu |      -1     -27    -237     -48      2 |       9     15
sio   xxxxx |     106     -77     -59    -263      1 |      36     38

Table 7.2227.2   GPS week: 2227   Day: 2   MJD: 59835.500

                                                         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 |       0      -7      -2      12      5 |       6     19
emr   uuuuu |      39      34    -185     126      2 |      47     51
esa   uuuuu |      24       5      85     194      6 |      27     33
gfz   uuuuu |      -8     -47      59       6     -8 |      34     39
grg   uuuuu |      23     -20      27      31     -1 |       0     16
igr   xxxxx |      13     -16      58      40      0 |       3     18
irf   xxxxx |       0       6       3      -5     -8 |       2     17
jpl   uuuuu |      15      42     -59      -2     16 |      34     40
mit   uuuuu |     -21      18      42    -117     -7 |      23     28
ngs   uuuuu |     -33     -43     -68    -127     -5 |      13     22
sio   xxxxx |      93     -76     -51    -229     -9 |      40     44

Table 7.2227.3   GPS week: 2227   Day: 3   MJD: 59836.500

                                                         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 |      -4      16      84     -68      9 |       8     19
emr   uuuuu |       6     -11     -25     168    -16 |      50     53
esa   uuuuu |      -1       3      43     198     -1 |      29     34
gfz   uuuuu |     -14     -24     173      24      5 |      35     40
grg   uuuuu |       5     -17     -20     -38      0 |       0     16
igr   xxxxx |       0     -16      43      46     -2 |       4     18
irf   xxxxx |     -10       0      -1     -31     -7 |       2     18
jpl   uuuuu |      31      -1     -30      24     -8 |      37     42
mit   uuuuu |     -17       2     -12    -107     -9 |      24     28
ngs   uuuuu |      11       4    -183     -49     -4 |      14     22
sio   xxxxx |      75     -86    -113    -188      0 |      41     44

Table 7.2227.4   GPS week: 2227   Day: 4   MJD: 59837.500

                                                         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 |     -13     -17      48     -19      5 |      10     21
emr   uuuuu |      21       0      -2      80    -29 |      52     54
esa   uuuuu |      26       8      96     233      4 |      31     36
gfz   uuuuu |     -10     -52     118    -121     -1 |      38     42
grg   uuuuu |      19     -12      41     -69      1 |       1     17
igr   xxxxx |      -5      -1      69       6     -1 |       5     19
irf   xxxxx |      -4       6     -10     -56     -5 |       2     18
jpl   uuuuu |      -7      13     -31       0     21 |      38     42
mit   uuuuu |     -16      20     -42    -110     -4 |      24     29
ngs   uuuuu |       1      16    -168       6     -6 |      15     23
sio   xxxxx |      95     -68    -138    -260     -1 |      43     46

Table 7.2227.5   GPS week: 2227   Day: 5   MJD: 59838.500

                                                         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 |      -7     -35      43     -39      6 |       7     22
emr   uuuuu |       1      -5      34     149    -10 |      46     52
esa   uuuuu |      25      20      28     145     -2 |      28     35
gfz   uuuuu |      12     -20      79     -28     -6 |      35     41
grg   uuuuu |      29      -9      -6      38      0 |      -3     20
igr   xxxxx |       2     -11      32       0     -9 |       2     21
irf   xxxxx |      -8       7     -42     -45     -3 |      -2     21
jpl   uuuuu |      -2      31      77     -24     10 |      37     42
mit   uuuuu |     -15      30     -83     -99     -8 |      20     28
ngs   uuuuu |     -17     -28    -121     -42      0 |      11     24
sio   xxxxx |      55     -57    -232    -449     -4 |      40     45

Table 7.2227.6   GPS week: 2227   Day: 6   MJD: 59839.500

                                                         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 |       0     -14      43    -116      4 |      11     25
emr   uuuuu |       5     -25    -147     259    -35 |      50     55
esa   uuuuu |      10      -2      -5     232     -8 |      33     38
gfz   uuuuu |       7     -20      80      25     -8 |      38     44
grg   uuuuu |      12     -35     -20     -29     -1 |       1     21
igr   xxxxx |      -5      -6      14      35     -4 |       5     21
irf   xxxxx |     -19      -1     -49     -44     -6 |       1     22
jpl   uuuuu |     -21      -9      77     -35     26 |      41     47
mit   uuuuu |     -24      37     -79    -166     -5 |      23     30
ngs   uuuuu |      71      42      93      92      8 |      15     27
sio   xxxxx |      30    -107    -209    -243      0 |      44     48


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