[IGSREPORT-25423] Wk 1958 IGS Final Orbits

acc acc at igs.org
Fri Aug 4 02:34:45 PDT 2017


Author:  AC Coordinator / GA MIT 

sum-file Version 2.0
Final IGS Orbit Combination - Week 1958   (Jul 16, 2017 - Jul 22, 2017)

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:

igs1958[0-6].sp3  IGS GPS ephemeris files in SP3 format.
igs1958[0-6].clk  IGS GPS satellite and station clocks in clock RINEX format.
igs1958[0-6].cls  IGS GPS clock combination summary report.
igs19587.erp      Earth Rotation Parameters (ERP) and their rates as well as
                  Universal Time (UT1-UTC) and Length Of Day (LOD) associated 
                  with IGS ephemerides.
igs19587.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   | SYOG SYOG
                0  |  EMR   | CHUR FAIR HERS MCM4 WHIT CHUR FAIR HERS MCM4 SFER
                0  |  EMR   | SYOG WHIT YELL
                0  |  ESA   | ABMF BAKE FAA1 MAL2 ABMF FAA1 KELY MAL2
                0  |  GFZ   | ALBH MAL2 ALBH MAL2
                0  |  GRG   | GLSV LHAZ MAC1 MAW1 SYOG TEHN CHTI GLSV KIRU LHAZ
                0  |  GRG   | LPGS MAC1 MAW1 PARC SYOG TEHN
                0  |  MIT   | REUN REUN
                1  |  COD   | BRFT HRAO TIXI BRFT HRAO TIXI
                1  |  EMR   | SYOG CHUR HERS SYOG WHIT
                1  |  ESA   | MAC1 MKEA ABMF MAC1 MKEA
                1  |  GFZ   | 21 ABMF BRFT KOUR MAW1 BRFT KOUR MAW1
                1  |  GRG   | GLSV INVK LHAZ MAL2 MAW1 NAIN SYOG GLSV INVK LHAZ
                1  |  GRG   | MAL2 MAW1 NAIN SYOG
                1  |  MIT   | MKEA
                2  |  COD   | TIXI MAL2 TIXI
                2  |  EMR   | CHUR HERS
                2  |  ESA   | IRKJ AUCK FAA1 IRKJ
                2  |  GFZ   | ABMF IRKJ ABMF IRKJ
                2  |  GRG   | 21 25 32 21 25 ADIS GLSV MAL2 NAIN PIE1 SYOG ADIS
                2  |  GRG   | CHTI GLSV LPGS MAL2 NAIN PIE1 SYOG
                2  |  MIT   | CHUR REUN CHUR REUN
                3  |  COD   | PARC TIXI PARC TIXI
                3  |  EMR   | DRAO MAS1 SFER
                3  |  ESA   | REUN REUN
                3  |  GFZ   | MAL2 DRAO MAL2
                3  |  GRG   | 21 21 GLSV MAL2 SYOG GLSV MAL2 SYOG
                3  |  MIT   | BJFS BJFS
                4  |  COD   | FAA1 HRAO TIXI NAIN PDEL SYOG TIXI
                4  |  EMR   | ALBH MAS1 PRDS SFER SYOG TWTF
                4  |  ESA   | CHTI MAL2 CHTI MAL2
                4  |  GFZ   | PDEL PDEL
                4  |  GRG   | 21 21 GLSV MAL2 SYOG CHTI GLSV MAL2 SYOG TASH
                4  |  MIT   | PDEL PDEL
                5  |  COD   | TIXI TIXI TUVA
                5  |  EMR   | HERS ALBH HERS MAS1 SFER TWTF
                5  |  ESA   | SAVO
                5  |  GFZ   | CHUR FAA1 GMSD GODE INEG CHUR GMSD GODE INEG
                5  |  GRG   | 21 21 FAA1 GLSV KIRU MAW1 PIE1 REUN SYOG ALRT GLSV
                5  |  GRG   | KIRU MAW1 NAIN PIE1 POHN REUN SYOG
                5  |  MIT   | KIRI KIRI
                6  |  COD   | POVE TIXI ABMF HYDE MAL2 TIXI
                6  |  EMR   | ALBH CHUR MAS1 NIST NLIB PRDS SUWN TSKB TWTF WILL
                6  |  ESA   | SAVO SAVO TUVA
                6  |  GFZ   | ABMF AUCK GODE POHN UFPR AUCK GODE NAIN POHN POVE
                6  |  GFZ   | SYOG TRO1 UFPR
                6  |  GRG   | GLSV MAW1 OHI3 SYOG TRO1 FAA1 GLSV MAW1 OHI3 SYOG
                6  |  GRG   | TRO1
                6  |  JPL   | CEDU

 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
               ----+--------+---------------
                2  |  GRG   |  25

 7. 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 G04 |    |    |    |    |  4 |  4 |  4 |
           PRN G25 |  4 |  4 |  4 |  4 |  4 |  4 |  4 |

 8. Starting 5-Nov-2006 (GPS Week 1400, day 0, MJD 54044) until 16-Apr-2011 (GPS
    Week 1631, day 6, MJD 55667) all IGS products, including the IGS combined
    orbits, are based on the IGS realization of the ITRF2005 reference frame
    (IGS05). For more information see IGSMAIL #5447. The IGS05 frame is also the
    basis for the homogeneously reprocessed IGS products from GPS Weeks 730 to 1459
    (1994-2007); see IGSMAIL #6136.
    
    Starting 17-Apr-2011 (GPS Week 1632, day 0, MJD 55668) all IGS products, are
    based on the IGS realization of the ITRF2008 reference frame (IGS08). For more
    information see IGSMAIL #6354.
    
    Starting 07-Oct-2012 (GPS Week 1709, day 0, MJD 56207) all IGS products, are
    based on the updated IGS08 frame (IGb08). For more information see IGSMAIL
    #6663.
    
    Starting 29-Jan-2017 (GPS Week 1934, day 0, MJD 57782) all IGS products,
    are based on the IGS realization of the ITRF2014 reference frame (IGS14).
    For more information see IGSMAIL #7399.

 9. Small rotations were applied to all the AC orbit and ERP values in order to
    align them to the current IGS reference frame. These RX, RY and RZ rotations
    were estimated in the IGS SINEX combination process, performed by the IGS
    Reference Frame Coordinator at the Institut Geographique National (IGN).
    Starting on 19-Aug-2012 (GPS Week 1702; MJD=56158), ACs began contributing
    products based on 1d SINEX integrations. As a result, the SINEX combinations
    are now done daily instead of weekly, and the associated daily rotations are
    applied here to the orbits and ERPs. The estimated 7 transformations, from
    which only the 3 rotations are applied to the orbit and ERP values, are:
    
            |     |    DX     DY     DZ      RX     RY     RZ     SCL
     Centre | Day |   [mm]   [mm]   [mm]   [uas]  [uas]  [uas]   [ppb]
     -------+-----+---------------------------------------------------
       COD  |   0 |     .2     .1     .8       4      6     -8    -.48
       EMR  |   0 |    1.3   -3.8    1.3       6     32      9    -.25
       ESA  |   0 |    -.4     .4    -.7     -22     -2      4    -.49
       GFZ  |   0 |     .6     .2     .7      -2    -21     -8    -.34
       GRG  |   0 |   -1.7   -4.3   19.9      78     -5     73    -.33
       JPL  |   0 |   10.0   -9.7   -1.7     -20    -50     40     .38
       MIT  |   0 |   -2.5   -5.3    3.3       8     31     -6    -.12
       NGS  |   0 |   -4.3   -2.7    8.5      18    -17     12    -.25
       SIO  |   0 |   -6.3    1.5   -5.5      -9     12     -7    -.18

       COD  |   1 |    -.4     .4     .7      13     14     -4    -.32
       EMR  |   1 |    1.6   -7.9   -4.3       1     28     30    -.21
       ESA  |   1 |    -.6     .5    -.8     -14      2      2    -.43
       GFZ  |   1 |     .2     .4     .5       3    -14    -13    -.29
       GRG  |   1 |    6.1   -2.2     .2      86      7     36    -.16
       JPL  |   1 |    5.6   -6.6  -10.0     -21    -27     38     .32
       MIT  |   1 |   -1.8   -4.6   -2.2       7     28     -4    -.10
       NGS  |   1 |   -5.8  -11.5    6.1      35    -28     -9    -.20
       SIO  |   1 |   -4.8     .5  -14.2     -10      7     -9    -.20

       COD  |   2 |    -.0     .4     .8      11     14     -6    -.37
       EMR  |   2 |   -2.0   -2.2   -7.7      -5     45     47    -.10
       ESA  |   2 |   -1.0     .7   -1.1       1     -4      1    -.35
       GFZ  |   2 |     .5     .3     .5       2    -26     -9    -.36
       GRG  |   2 |   -1.4   -2.0  -13.6      60      3     61    -.32
       JPL  |   2 |    7.3     .2   -7.4     -35    -46     44     .46
       MIT  |   2 |   -3.4   -1.3     .2     -13     26     12    -.02
       NGS  |   2 |   -4.5   -6.9    -.3      32     -2      8    -.13
       SIO  |   2 |   -6.3     .6  -15.6       0     -5      0    -.10

       COD  |   3 |     .6     .2     .9       6     -4     -7    -.49
       EMR  |   3 |    2.7    2.4    2.2      -8     45      0    -.36
       ESA  |   3 |    -.8     .3    -.9     -26     -7     -1    -.55
       GFZ  |   3 |     .2     .5     .8       4    -28     -6    -.40
       GRG  |   3 |    9.1   -3.4    -.4      56    -28     79    -.29
       JPL  |   3 |    4.7    -.6   -1.9     -45    -64     73     .19
       MIT  |   3 |   -2.3   -3.8    -.1     -15     21     14    -.18
       NGS  |   3 |   -2.7   -1.4  -11.1       5    -20    -15    -.32
       SIO  |   3 |   -4.2     .8  -10.9       8    -18      4    -.16

       COD  |   4 |     .2    -.2     .3      -6      3      1    -.49
       EMR  |   4 |   -3.7    4.4   -6.7     -13     34     50    -.28
       ESA  |   4 |    -.3     .4    -.5      -8     -5     11    -.50
       GFZ  |   4 |     .5     .4     .7       1    -21      5    -.44
       GRG  |   4 |    2.9   -8.9  -13.8      76    -36     67    -.18
       JPL  |   4 |    3.5   -2.9   -8.3     -38    -66     76     .05
       MIT  |   4 |   -5.9   -3.7   -5.9     -11     36      9    -.09
       NGS  |   4 |   -2.0   -5.3   -4.1      24     -1     -8    -.12
       SIO  |   4 |   -6.7    -.7   -9.5       3     20     -9    -.33

       COD  |   5 |     .3    -.0     .9       2      9     -4    -.54
       EMR  |   5 |   -5.0   10.5   -3.3      -6     44      9    -.27
       ESA  |   5 |    -.9    -.0    -.7      -7     -6      8    -.58
       GFZ  |   5 |     .4     .3     .7      -4    -24      8    -.36
       GRG  |   5 |    2.2   -1.1    3.5      57      2     50    -.37
       JPL  |   5 |   -3.4    2.6   -6.6     -23    -52     46     .06
       MIT  |   5 |  -10.3   -1.8   -3.7      -6     31      7    -.23
       NGS  |   5 |   -5.8   -5.5     .2      30      6     -7     .0 
       SIO  |   5 |   -8.4    2.7  -14.0       2      3     -7    -.28

       COD  |   6 |    -.0    -.1     .7       4     12     -3    -.51
       EMR  |   6 |   -2.0    1.0   -4.1     -15     27     18    -.32
       ESA  |   6 |    -.8    -.5   -1.1     -11      6     -4    -.43
       GFZ  |   6 |     .5     .3     .7      -4    -22      2    -.43
       GRG  |   6 |   -4.6   -2.4  -25.5      56    -29     80    -.43
       JPL  |   6 |    2.0    2.7   -8.2     -33    -56     56     .14
       MIT  |   6 |   -9.0   -5.3   -6.1       5     14      1    -.07
       NGS  |   6 |    -.8   -6.4     .4      16     -4      4    -.24
       SIO  |   6 |   -7.1   -2.5  -14.8      -1     21     -1    -.20


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

11. Starting 5-Nov-2006 (GPS Week 1400, day 0, MJD 54044) until 16-Apr-2011 (GPS
    Week 1631, day 6, MJD 55667) the absolute antenna model is introduced (IGSMAIL
    #5438). The antenna phase center offsets and phase center variations are given
    in the file:
        ftp://igs.org/igscb/station/general/igs05.atx
    These antenna calibrations are also used in the homogeneously reprocessed IGS
    products from GPS Weeks 730 to 1459 (1994-2007); see IGSMAIL #6136.
    
    Starting 17-Apr-2011 (GPS Week 1632, day 0, MJD 55668) the absolute antenna
    model is updated (IGSMAIL #6255 & #6374) as given in the file:
        ftp://igs.org/igscb/station/general/igs08.atx
    
    The JPL solution did not use IGS08/igs08.atx until GPS Week 1649, which caused
    their RMS clock residuals to be higher during that period than for the other
    centres; from GPS Week 1632 through 1648 the JPL solution is excluded from the
    weekly SINEX combination.
    
    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
        ftp://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 1.1958.a). It also displays the computed satellite
position sigmas for the combined orbits (Table 1.1958.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 2.1958.[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 3.1958.[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 5.1958.0-6). 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 1958 summary.                       (Jul 16, 2017 - Jul 22, 2017)

Table 1.1958.a   GPS week: 1958   MJD: 57950.000-57956.000

         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  276|    1     0     3     3     4     5   .04    9    9 |    -748     -60     11    110
        |    0     0     2    14    11    15   .03           |     321     465
emr   84|    0     0    -4    -6     5    44   .22   17   17 |    1574     304     21    123
        |    1     2     2    12    13     6   .05           |     965     860
esa  150|    0     0    -3     0     0    -7  -.02    9    9 |    -403   -1397      7    156
        |    0     0     1    10     3     7   .03           |     825    1396
gfz  199|   -1     0     2   -11     6   -10   .13   11   10 |    -157    -298     11    125
        |    0     0     1     7     7     8   .04           |     354     521
grg  110|    1     0    -3    -5     4     6  -.37   16   15 |      15     -70     13    162
        |    1     0     8    17    10    10   .04           |     184     367
igr  n/a|    0     0     2    -4    -7    -5   .06    4    4 |   -2299      13     12     75
        |    0     0     1     8    11    10   .01           |     670     832
jpl   80|    0     0    -2     0   -34    27   .27   12   12 |    1218     409     41    227
        |    0     1     1     8    16    16   .04           |    1054     824
mit  349|    0    -1     0   -12    -6     2  -.04   11   10 |    -552     -65     39    337
        |    0     0     1    29    16     6   .03           |     313     301
ngs  219|    0     0     1    19     0    -2   .03    9    7 |    -746     -55    920   2147
        |    0     0     2    24    23    12   .06           |     227     243
sio  351|    0    -1     0    -1   -10   -10  -.11   12   12 |     ---     ---    ---    ---
        |    0     0     2    28    27    16   .03           |     ---     ---


Table 1.1958.b   GPS week : 1958   MJD: 57950.000-57956.000   

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



Table 2: Daily transformation of each centre to the combined IGS orbit and
         clocks for each day of the week. The transformation displayed is the
         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 2.1958.0   GPS week: 1958   Day: 0   MJD: 57950.000                            

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  278|    0    -1     0     2   -12   -19   .09   10    9 |    -745    -107     12    122
emr   85|    1     0    -2   -22    14    50   .24   16   16 |     436     231     18    132
esa  150|   -1     1    -5    -6    -6   -14  -.02   10    9 |    -878     -83      8    167
gfz  200|   -1     0     2   -13    -4   -20   .12   11   10 |     -57    -248     12    128
grg  113|    0     0    11     8    10    13  -.35   16   14 |    -107     124     14    173
igr  n/a|    0     0     1   -11     1    -5   .07    4    4 |   -2586     140     12     86
jpl   80|    0    -3    -4    10   -22    24   .32   14   13 |     -76     346     43    232
mit  349|    0    -1     0     7    17    11  -.02   11   11 |    -670     196     49    356
ngs  215|    0     1     2    16   -33     9  -.02   10    8 |    -671    -224    941   1949
sio  349|    0    -1    -5     0    34     1  -.07   13   12 |     ---     ---    ---    ---

Table 2.1958.1   GPS week: 1958   Day: 1   MJD: 57951.000                            

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  277|    0     0     1     9    16    16   .07   10   10 |    -496    -452     11    111
emr   85|    0    -3    -5   -18     3    43   .29   16   16 |      70    1229     17    120
esa  150|    0     0    -3    -1    -5   -20  -.02    9   10 |      31   -2255      7    149
gfz  200|   -2     0     3   -16     6   -16   .14   10    9 |    -597    -180     11    125
grg  111|    2     0    -2    11    19    10  -.33   15   15 |     169    -611     14    181
igr  n/a|    0     0     0   -10     0     2   .06    4    4 |   -2923     761     13     71
jpl   80|    0    -1    -5    -6   -29     9   .31   13   13 |    -312    1098     41    235
mit  350|    0     0     0   -18    -8     7  -.04   11   10 |    -506    -488     37    341
ngs  217|    0     1     4    37   -12    -9  -.02    9    8 |    -683      57   1059   2568
sio  355|    0     0     0    -8   -16     8  -.12   12   11 |     ---     ---    ---    ---

Table 2.1958.2   GPS week: 1958   Day: 2   MJD: 57952.000                            

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  278|    1     0     2     9     2    -4   .04    9    9 |   -1405     917     10     97
emr   85|   -1    -1    -3    15    14    43   .24   16   16 |    1713     529     19    118
esa  150|    0     0    -4    -5     2    -4  -.00    9    9 |   -1770     968      9    165
gfz  201|   -1     0     3    -4    16   -16   .18   11   10 |     -40    -360     11    118
grg  112|    3    -1   -10   -35     3    10  -.39   17   17 |    -233     530     15    186
igr  n/a|    0     0     3    -1    -4    -4   .06    4    4 |   -1745      -5     12     70
jpl   80|    0     0    -1     1   -26    46   .27   12   12 |    1258     650     42    220
mit  350|    0     0     1   -50   -14    -1  -.08   12   10 |    -845     394     41    318
ngs  221|   -1     1     3    57    -4   -16  -.02    9    8 |   -1225     432    692   1909
sio  356|    0    -2     0   -44    -6     9  -.09   13   12 |     ---     ---    ---    ---

Table 2.1958.3   GPS week: 1958   Day: 3   MJD: 57953.000                            

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  279|    1     0     4     5    -3     0   .04    9    9 |    -467    -373     10    115
emr   85|   -2     1     0     0     9    42   .21   17   17 |    2008     354     21    114
esa  150|    0     1    -1    -4     4    -6   .02    9    9 |     366   -2086      8    165
gfz  202|   -1    -1     3    -9    12    -2   .15   11   10 |    -383     -64     12    127
grg  111|    3     0    -1     1    13    14  -.34   15   15 |     166    -223     12    157
igr  n/a|    0     0     3     3     7    -7   .08    4    4 |   -1895     160     13     79
jpl   80|   -1     0     0     3   -21    25   .27   12   12 |    1569     615     40    227
mit  349|    0    -1     1     7     1     5  -.06   10    9 |    -280    -228     39    336
ngs  222|    0     0    -4   -20    -8    -2   .02    8    7 |    -508    -252    827   2199
sio  357|    0    -1    -1    45   -24   -26  -.13   13   14 |     ---     ---    ---    ---

Table 2.1958.4   GPS week: 1958   Day: 4   MJD: 57954.000                            

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  278|    1     0     3     2    16    24   .01    9    9 |    -659    -209     11    110
emr   84|   -2     2    -4    -9    20    41   .19   17   17 |    2477     -61     25    137
esa  150|    0     0    -3    11     2     1  -.02    8    8 |    -186   -1592      7    138
gfz  198|   -1     0     4    -2    -3     0   .15   11   10 |     156    -308     12    133
grg  108|    3     0    -4     2     2     5  -.37   16   15 |     186    -175     15    141
igr  n/a|    0     0     3   -15   -14     9   .06    4    4 |   -1571    -521     12     68
jpl   80|    0     1    -3   -10   -28    43   .28   12   12 |    2384    -272     42    231
mit  350|    0    -1     0   -34   -36    -6  -.05   11    9 |     -82    -252     40    298
ngs  220|    0     0     1    24    40   -16   .09    9    7 |    -733     -93    912   2161
sio  348|    1    -1     1    -8   -50   -27  -.15   12   12 |     ---     ---    ---    ---

Table 2.1958.5   GPS week: 1958   Day: 5   MJD: 57955.000                            

CENT STA|   DX    DY    DZ    RX    RY    RZ   SCL  RMS  WRMS|    TOFT   TDRFT   SDEV    RMS
        |  [mm]  [mm]  [mm] [uas] [uas] [uas] [ppb] [mm] [mm]|    [ps]  [ps/d]   [ps]   [ps]
--------+----------------------------------------------------+------------------------------
cod  274|    2     0     4    22    11    20   .01    9    9 |    -875      84     12    114
emr   85|    0     5    -7    -7    -4    33   .19   18   18 |    2567   -1323     27    127
esa  150|    0     0    -2    19    -2    -5  -.03   10   10 |     541   -3155      8    162
gfz  199|   -1     0     0   -10     7    -3   .09    9    8 |     344   -1332     11    123
grg  111|    0    -1     0    -2   -10   -14  -.43   16   15 |     116    -279     13    147
igr  n/a|    0     0     2     8   -24   -21   .04    4    4 |   -2008   -1479     12     80
jpl   80|    0     0    -2    10   -68     5   .23   13   13 |    2284   -1004     43    219
mit  349|    0    -2    -1   -34    -5     2  -.03   10    9 |    -500    -150     37    360
ngs  218|    0     0     0    11    16    16   .09    8    7 |    -778     -67   1169   2401
sio  343|    0    -1     0   -14   -22   -23  -.12   11   11 |     ---     ---    ---    ---

Table 2.1958.6   GPS week: 1958   Day: 6   MJD: 57956.000                            

CENT STA|   DX    DY    DZ    RX    RY    RZ   SCL  RMS  WRMS|    TOFT   TDRFT   SDEV    RMS
        |  [mm]  [mm]  [mm] [uas] [uas] [uas] [ppb] [mm] [mm]|    [ps]  [ps/d]   [ps]   [ps]
--------+----------------------------------------------------+------------------------------
cod  274|    2     0     6   -26    -3     0   .03   10    9 |    -594    -280     12    107
emr   84|    0     2    -6    -3   -17    53   .15   18   18 |    1747    1169     26    118
esa  150|    0     1    -4    -8     0     0  -.07    9    9 |    -929   -1581      7    146
gfz  199|   -1     0     1   -23     9   -11   .08   11   10 |    -528     401     12    122
grg  107|    0     0   -14   -25    -6     5  -.39   17   15 |    -187     138     14    155
igr  n/a|    0     0     3    -3   -19   -14   .05    4    4 |   -3367    1036     12     75
jpl   80|   -1     0    -3    -7   -47    39   .20   12   12 |    1423    1430     41    226
mit  349|    0    -1     0    31     1     1   .03   10    9 |    -986      71     35    352
ngs  220|    0     0     3    12    -1     0   .09    8    7 |    -624    -244    844   1846
sio  349|    1    -1     2    19     9   -15  -.14   11   10 |     ---     ---    ---    ---

       
       
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 3.1958.0   GPS week: 1958   Day: 0   MJD: 57950.000                            

        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
------+--------------------------------------------------------+---------------------------------------------------------
   1E |   13   22   14    9   24    6   24    8   19    9    5 |    55   55   55   49   57   52   51   50   51   49    51
   2E |   17    9    9   12   23    4   12   10   11   10    5 |    15   20   22   24   23   20   24   20   23   22    18
   3  |    9   14    8    5    9    4    9    5    8   10    3 |    27   30   30   26   26   26   32   26   26   30    26
   5  |   10   11   13   12   14    3   16   15   11   14    4 |    45   48   49   40   48   42   51   38   41   41    42
   6E |   13   15   15   10   41    7   20    8   11   14    6 |    39   39   43   40   50   39   43   38   37   38    38
   7  |   13   19    7    9   11    4   12   10    9   13    4 |    27   25   26   28   24   27   31   32   28   23    26
   8  |    6   13    6   10   11    2   11   10    6   14    3 |    23   27   23   24   24   23   29   22   22   26    22
   9  |    5   14    8    7    9    4   15    7    9   12    3 |    24   31   23   22   19   23   38   21   19   29    22
  10  |    8   10   13   11   11    4   10    8    6    8    3 |    23   28   30   27   22   25   29   25   23   28    24
  11  |    9   17   10    9   14    4   13   12    8   11    4 |    45   51   48   46   47   47   51   46   47   47    46
  12  |   10   24    8   12   21    5   16   20   11   11    5 |    32   30   28   36   29   31   30   31   33   35    30
  13  |   10   10   12   13   12    4   14   10   11   15    4 |    27   26   25   35   25   27   29   26   28   32    26
  14  |    9   13   10   10    9    5   10   12    7   14    4 |    25   31   28   31   32   28   28   26   27   27    26
  15  |    6   14   11    8   11    3   13    9   12   12    4 |    28   30   27   27   30   26   28   25   30   29    27
  16  |   10   24    8   15   22    5   13   20   12   18    6 |    39   39   40   41   34   39   39   42   43   45    39
  17  |    8   16    9   14   16    5   11   11    8   14    4 |    27   32   26   37   25   31   33   34   34   28    29
  18  |   10   26   14   14   14    5   18   22   14   16    6 |    32   35   30   36   32   32   33   40   38   38    32
  19  |    9   19    9   16   19    5   15   11   10   19    5 |    25   29   27   34   23   28   32   31   30   27    26
  20  |   10   17   13    9   15    4   11   13   10   13    4 |    44   46   41   45   42   41   40   39   42   40    41
  21E |   18   11    7   12   17    4   12   10    9   11    4 |    20   22   21   26   25   21   24   25   20   25    21
  22  |   12   13   11   10   10    4   13    9    9   15    4 |    44   44   44   48   46   46   48   46   47   44    44
  23  |    5   19    9    8    9    4   11    9    8   10    3 |    28   25   26   29   26   27   29   29   27   29    26
  24  |    9   10    5    6    8    3   11    7    9    8    3 |    21   22   19   19   21   19   21   19   19   16    18
  25  |    7   21    7    7   17    4   13   10    6    9    3 |   280  193  280  281  276  282  282  280  283  280   281
  26  |   11   18    9   14   17    3   11    7    6   10    4 |    37   35   35   31   37   35   37   36   36   38    34
  27  |    8   14    6   10    9    4   13    9    6   12    3 |    28   32   27   28   25   27   32   24   27   26    26
  28  |    6   14    6   10   15    5   13    9    8   12    3 |    23   26   23   21   25   22   29   24   24   21    22
  29  |   10   23   10   13   17    4   16   12   11   12    5 |    28   26   25   29   25   25   28   27   25   25    24
  30  |    7   14    6    6   11    4   15    6    7    7    3 |    22   23   25   23   27   24   29   23   23   23    23
  31  |   13   14    8   15   14    3    8   13    8   12    4 |    18   23   17   29   18   22   21   25   23   18    19
  32  |    7   11    9    7    9    3   11    9    6   16    3 |    24   32   25   29   24   25   33   25   25   35    25
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |   10   16   10   11   16    4   14   11   10   13      |T   37   37   38   40   38   38   41   38   38   39    37
 WRMS |    9   16    9   10   14    4   13   11    8   12      |NE  38   37   38   40   38   38   42   39   39   40    38
 MEDI |    9   14    9   10   14    4   13   10    9   12      |MD  27   30   27   29   26   27   32   27   28   29    26

Table 3.1958.1   GPS week: 1958   Day: 1   MJD: 57951.000                            

        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
------+--------------------------------------------------------+---------------------------------------------------------
   1E |   10   13   10    9   20    6   15    7    9    9    4 |    41   42   41   41   45   39   41   35   34   34    38
   2E |   18   10    8   10   12    4   10   10   11    8    4 |    14   18   17   22   16   18   18   18   18   18    16
   3  |   10   11    8    6    8    5    9    4    7   12    3 |    19   29   21   20   18   20   26   19   20   21    19
   5  |   11   13   13   11   13    3   14   14    8   11    4 |    32   37   32   30   32   30   38   26   27   29    29
   6E |    8   11   12   11   25    4   13    9   13    8    4 |    31   32   36   34   37   30   31   30   31   27    31
   7  |   10   17    6    8   16    2   11    8    8   14    4 |    27   26   24   29   24   26   27   30   29   23    25
   8  |    9   11    7    9   10    3    9    6    8   11    3 |    20   25   20   19   17   19   25   20   20   19    19
   9  |    8   11    8    7    8    4   10    6    7   13    3 |    21   32   25   25   16   24   33   20   24   32    24
  10  |   10    9   10    7   17    4   13   14    5   11    4 |    15   24   22   20   18   18   24   18   16   25    18
  11  |    7   10   10    7   20    4   11    9    6    9    3 |    26   28   28   25   24   27   32   27   26   24    25
  12  |    6   26    8    9   14    4   18   17    9    8    4 |    27   27   24   30   20   25   23   27   28   27    25
  13  |   10   11   12   13   11    3    9    9    8   15    4 |    22   27   26   33   21   25   27   23   24   29    24
  14  |   11   10   11   10   13    4    9    9   11   14    4 |    30   29   29   29   27   26   31   25   30   28    27
  15  |    7   15   11    9   12    3   15    9    7   11    3 |    23   24   19   26   22   22   24   21   23   26    22
  16  |   10   25    8   12   19    5   14   19    9   15    5 |    29   30   29   35   22   29   29   33   31   31    28
  17  |    8   13   11   13   14    5   10   12   10   14    4 |    23   30   24   30   23   27   29   31   31   25    26
  18  |   10   28   13   14   22    6   19   22   13   15    6 |    19   27   21   28   22   21   24   32   24   28    21
  19  |   11   18    9   14   17    5   14   13   11   19    5 |    19   26   20   22   20   20   24   23   22   20    19
  20  |   10   15   12    9   15    4   13   11   10   12    4 |    31   34   29   31   30   29   31   28   28   29    28
  21E |   13   11    7   10   11    4   12   10    8    8    3 |    21   21   21   26   19   21   22   25   21   24    21
  22  |   13   11   12   11   15    5   10    9   11   19    4 |    33   36   34   40   34   36   37   38   39   35    35
  23  |    9   22    8    8    9    4   10    7    9    9    4 |    23   22   23   27   22   24   22   24   26   26    23
  24  |    6    9    5    6   11    4    9   10    8    6    2 |    21   23   20   19   19   20   23   20   19   18    19
  25  |    7   15    7    5   13    4   12    8    8    5    3 |   252  219  250  250  242  250  252  249  250  252   251
  26  |   14   12    8   12   17    4   13    7    8    6    4 |    29   30   27   29   27   27   30   28   28   25    27
  27  |    7   12    8    6    9    3   13    6    9    8    3 |    26   29   24   24   21   25   30   23   26   24    24
  28  |    7   16    9   11   13    5   14    9    6    9    3 |    19   26   24   22   21   20   27   23   26   20    21
  29  |    9   24   11   10   15    3   17   12   11    8    4 |    28   26   25   28   19   25   28   27   23   25    25
  30  |    6   17    6    9   14    3   11    5    7    9    3 |    23   22   25   24   23   23   24   23   24   22    23
  31  |   11   22   10   14   17    4   10   13   12   11    5 |    24   29   20   28   16   23   26   26   26   18    21
  32  |    9   14    9    8   11    3   13   10    8   12    3 |    26   34   23   25   19   23   34   21   24   30    24
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |   10   16    9   10   15    4   13   11    9   12      |T   32   34   32   34   30   32   35   32   32   32    31
 WRMS |   10   16   10    9   15    4   13   10    8   11      |NE  32   35   32   35   30   32   36   33   33   33    32
 MEDI |   10   13    9    9   14    4   12    9    8   11      |MD  24   28   24   28   22   25   27   25   26   25    24

Table 3.1958.2   GPS week: 1958   Day: 2   MJD: 57952.000                            

        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
------+--------------------------------------------------------+---------------------------------------------------------
   1E |    9   13    9   13   21    4   11    8    7   14    4 |    28   30   29   30   32   25   26   22   24   24    25
   2E |   12    9    7    8    9    3   11    8    9    6    3 |    19   20   23   23   20   21   23   24   24   23    21
   3  |    5   13    7    6   12    3    8    6    8   10    3 |    22   31   27   24   28   23   29   24   24   27    24
   5  |    9   10   11   14   20    3   10   14   10   15    4 |    41   43   42   36   50   37   44   31   35   33    37
   6E |    8   10   11    9   22    3   12    9    8    8    4 |    19   23   25   22   25   21   22   21   22   22    20
  X7  |   13   14    7  ---   21    4    7   15   15  ---    6 |    35   34   32  ---   37   32   33   33   30  ---    31
   8  |    6   11    6   12   10    5    9    7    5    9    3 |    21   27   22   23   17   22   25   20   22   20    20
   9  |    5   13    9   10   10    3   11    5   10   13    3 |    24   34   24   23   19   24   37   22   29   33    25
  10  |   11    9   10    8   16    3   10   11    7   10    4 |    24   29   29   27   31   26   30   26   24   28    26
  11  |    6   12    9    8   17    3    8   11    7    8    3 |    30   36   34   33   32   32   35   34   31   30    31
  12  |    9   29    7   12   21    4   19   19   10   10    5 |    25   27   20   24   21   21   24   20   22   20    19
  13  |    9    9   10   17   14    3    6   10   10   16    4 |    21   25   22   37   18   22   23   20   24   31    22
  14  |    9   12   10   11   14    3    7    9    8   13    4 |    17   16   14   13   16   13   13   16   15   18    13
  15  |    7   14   10   10   16    4   12   11    7   14    4 |    22   24   22   28   25   21   22   19   18   23    20
  16  |   10   22    7   14   19    6   17   19    8   14    5 |    29   32   28   31   25   29   29   30   31   29    27
  17  |    9   15    9   10   13    4   12   11   11   15    4 |    27   35   28   35   26   32   36   37   32   32    30
  18  |   10   27   13   18   22    5   19   22   14   16    6 |    27   32   26   33   28   27   30   36   29   31    26
  19  |    8   20    8   13   13    5   13   12    9   20    4 |    25   32   26   30   26   27   32   30   26   27    25
  20  |   13   15   10   13   21    4   12   13   12   12    5 |    30   31   28   33   30   29   30   28   28   28    27
  21E |   13   13    7    9   17    4   12   12    9   12    4 |    16   21   22   25   19   19   19   23   19   24    19
  22  |   13   12   10   12   17    4   10   13   10   19    5 |    35   37   37   39   34   35   39   37   35   37    35
  23  |    5   20   10    7   10    3    9    9    8   13    4 |    27   25   26   29   24   26   27   28   27   29    26
  24  |    7   10    6   10   20    5    9   10    7    6    3 |    18   20   17   19   28   18   21   17   16   16    16
 X25  |   18  ---   11    9  149   24   57   18   20   11    7 |   911  ---  915  916  857  916  914  912  910  912   913
  26  |   14   16   10   12   18    4   11    7    8    9    4 |    27   29   23   27   23   25   26   27   26   27    24
  27  |    9   11    7    8   12    3   12    6    7    9    3 |    28   32   28   28   23   27   29   27   29   26    27
  28  |    9   15    9   10   13    4    8   10   12   13    4 |    18   27   20   18   19   19   23   20   22   18    19
  29  |    9   23    7   11   17    4   19   15   11    9    4 |    27   28   24   32   25   28   29   30   26   26    26
  30  |    8   16    6   10   20    4   11    9   10   13    4 |    23   23   22   20   29   20   24   24   20   20    21
  31  |   12   16    8   14   24    3    9   12   11   11    5 |    18   21   16   26   22   18   22   23   20   16    18
  32  |    5   14    8    9   13    2   11   11    8   13    3 |    20   31   20   24   17   21   31   17   20   30    20
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |    9   16    9   11   17    4   12   12    9   13      |T   53   28   53   56   52   53   56   54   53   55    52
 WRMS |    9   16    9   10   17    4   12   10    8   12      |NE  58   29   58   61   56   58   61   58   58   60    57
 MEDI |    9   13    9   10   17    4   11   11    9   12      |MD  25   29   25   27   25   25   29   24   24   27    25

Table 3.1958.3   GPS week: 1958   Day: 3   MJD: 57953.000                            

        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
------+--------------------------------------------------------+---------------------------------------------------------
   1E |    6   12    8   10   18    4    8    8    6   10    3 |    28   33   33   30   36   30   31   29   30   29    29
   2E |   14   12    6    9   13    4   10    9   10   12    4 |    19   23   22   24   22   23   23   25   27   26    22
   3  |    6   14    8    6   10    3    8    8    5   11    3 |    27   32   31   30   27   28   31   29   30   31    29
   5  |   10   12   10   13   16    4   11   10   10   12    4 |    40   40   39   34   41   37   43   31   38   34    36
   6E |   13   14   10   11   27    4    9   10    9   17    5 |    25   33   30   28   33   26   27   28   25   30    26
  X7  |   11   16    7    9   14    3   11   13   10  ---    4 |    41   41   38   43   41   39   44   43   39  ---    39
   8  |    7   11    5   11   10    4    9    7    5   10    3 |    26   30   28   28   28   27   30   24   25   25    25
   9  |   12   14    9    6   11    3   11    5    6   14    3 |    27   35   31   29   20   30   36   27   27   33    27
  10  |    7   10    8    8   13    4    8    8    6    6    3 |    31   33   32   33   28   30   33   30   35   30    31
  11  |    7   11   11    6   16    5    6   10    5    9    3 |    32   36   34   34   35   32   36   35   33   32    33
  12  |    9   31    6   13   20    4   19   18    9   11    5 |    26   29   22   26   22   24   26   20   25   22    21
  13  |    8   10   10   12   10    3    8    8    7   13    3 |    23   28   21   33   19   23   26   22   24   30    23
  14  |    8   10    9   16   11    4   10    6    7   11    3 |    22   23   21   21   21   19   21   21   27   21    21
  15  |    7   16    9    9   11    3   16    8    5   12    3 |    25   25   23   26   25   23   26   23   27   25    24
  16  |    9   24    9   14   23    6   15   19   13   16    5 |    30   28   27   28   24   27   25   27   30   30    25
  17  |    9   17   10   13   14    4    8   13    8   17    4 |    29   35   28   37   29   32   36   35   32   29    30
  18  |    9   32   11   15   19    5   21   19   12   14    6 |    28   32   26   34   25   27   27   33   30   26    26
  19  |   12   20    8   14   14    5   14   13    9   23    5 |    27   33   29   34   27   30   33   31   29   30    27
  20  |   10   14   10   13   19    6   13   10    9   11    4 |    29   28   25   31   24   25   26   25   24   24    24
  21E |    9   15    7    9   18    3   11    9    7   10    3 |    22   24   21   24   18   20   23   22   25   24    21
  22  |   11   13   12   11   12    5   10   10   11   20    4 |    27   31   27   33   25   28   30   30   29   27    27
  23  |    7   23   10    7   10    3   10   10    8    9    4 |    26   23   28   29   22   26   24   24   24   24    24
  24  |    6   12    5    5   11    4   10    6    6    7    2 |    22   26   25   24   23   25   26   22   26   24    23
  25  |    7   13    8    6   15    4   11    9    7    8    3 |   447  678  453  453  464  452  449  451  454  454   452
  26  |   13   11   10   11   18    4   12    7   10    8    4 |    28   28   23   28   26   25   26   26   27   24    25
  27  |    6   10    5    9   11    4   11    5    5    8    2 |    29   30   29   29   27   28   31   27   27   28    27
  28  |    7   13    9   10   11    4   10    9    8   10    3 |    23   30   28   25   26   25   28   26   25   26    24
  29  |    9   24    8   15   18    5   19   14    8    9    4 |    25   27   23   27   25   23   25   26   23   22    23
  30  |    6   20    7    6   14    3   10    8    9   12    3 |    25   28   27   25   27   26   29   29   26   28    25
  31  |    9   15    9   16   18    3   12   11    9   18    4 |    20   26   19   27   19   21   22   24   23   18    20
  32  |    6   16    9   10   11    3   14    6    7   16    3 |    24   35   23   23   22   24   33   22   28   32    24
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |    9   17    9   11   15    4   12   10    8   13      |T   40   51   40   42   40   40   42   40   41   41    39
 WRMS |    9   17    9   10   15    4   12    9    7   14      |NE  42   54   42   45   42   42   45   43   43   43    42
 MEDI |    9   14    9   10   14    4   11    9    8   11      |MD  27   30   27   29   25   26   28   27   27   27    25

Table 3.1958.4   GPS week: 1958   Day: 4   MJD: 57954.000                            

        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
------+--------------------------------------------------------+---------------------------------------------------------
   1E |    6   12    7   10   17    4   10   10    7    9    3 |    41   41   39   38   43   39   39   36   38   36    38
   2E |   16   12    6   11   12    3   12   10    8    9    4 |    22   22   24   25   21   24   23   28   26   24    23
   3  |    7   19    7    5    9    3   10    7    6   11    3 |    26   33   29   27   25   27   33   26   27   30    27
  X4  |    2  ---  ---  ---  --- >>>>  ---  ---  ---  ---    0 |  9999  ---  ---  ---  ---  319  ---  ---  ---  ---  9999
   5  |    8   10   11   14   15    4   11   11    9   10    4 |    37   40   36   35   38   35   40   36   33   32    34
  X6E |   10  ---   10    9   23    4   10    8    9    9    4 |    35  ---   36   36   38   34   35   34   34   35    34
   7  |   15   14    5    9   16    4   10   11    9   15    4 |    43   39   40   37   41   41   40   41   41   33    40
   8  |    9   14    5    8    9    3    9    6    7    8    3 |    29   33   29   30   30   30   33   26   31   27    29
   9  |   10   16    8    7    6    4   11    6    7   12    3 |    29   34   26   26   24   26   36   27   27   31    27
  10  |    9    9    8    9   13    4    9    6    6    8    3 |    26   30   28   29   28   27   30   26   27   27    26
  11  |    6   11   11    5   17    3    7   13    6    8    3 |    32   35   33   33   33   32   35   33   33   28    31
  12  |    8   28    6   11   21    5   21   15    8    8    4 |    30   26   25   32   27   31   27   27   29   28    27
  13  |    9   12   11   18    9    3    8    8    9   15    4 |    26   30   29   41   24   31   30   30   32   37    30
  14  |   10   11    9   15   13    4    9    7    8   11    4 |    28   27   28   26   25   26   26   27   27   27    26
  15  |    5   16   10   10   14    3   15   12    9    9    4 |    26   30   26   32   24   28   29   28   33   29    27
  16  |   12   22    8   14   24    6   11   19   10   13    5 |    32   30   30   32   30   31   29   33   31   30    29
  17  |    8   19   10   12   17    3    8   15   10   11    4 |    39   41   39   44   37   42   44   44   43   38    40
  18  |   10   29   10   15   20    6   22   19   14   15    6 |    29   33   24   33   27   27   27   35   34   31    27
  19  |   10   21    9   12   19    5   13   12   11   18    5 |    32   37   36   35   33   34   37   34   34   30    32
  20  |   10   18    9   13   18    5   15   11   13   13    4 |    34   35   31   37   32   32   32   31   35   32    32
  21E |   11   18    7   14   18    3   12    8    7    7    4 |    28   28   27   32   29   28   28   29   25   27    27
  22  |   12   17   12   10   13    4   12   11   11   16    4 |    36   40   35   41   35   37   40   40   40   38    37
  23  |    8   21    9    7    6    3   11   12    9   10    4 |    31   27   30   31   30   29   30   32   32   30    30
  24  |    4   12    6    7   13    6   10    8   11    6    3 |    25   26   26   26   28   27   26   27   27   27    25
  25  |    8   14    7    5   16    3   10    8    9   15    3 |   599  381  605  606  589  604  603  603  602  603   603
  26  |   14   15   10   13   26    4   10    8    8    7    4 |    33   34   31   33   34   32   31   35   33   34    32
  27  |    9   13    7    9   13    3   10    7    8    9    3 |    38   37   38   37   39   36   39   32   36   34    36
  28  |   11   20    7   13   16    3   10    8    7   12    4 |    30   29   29   30   30   29   34   28   30   28    28
  29  |    8   25    7   12   15    4   19   13    7    9    4 |    34   35   31   34   35   35   37   36   33   35    33
  30  |    5   14    5    8   14    2   10    5    5    6    2 |    29   27   30   27   31   29   30   29   29   29    29
  31  |    9   16    9   15   20    6   10   11    8   15    4 |    25   30   22   29   22   25   26   25   25   22    23
  32  |    7   15    8   12   12    4   11    8    7   17    4 |    27   37   27   27   24   27   35   26   28   36    28
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |    9   17    8   11   16    4   12   11    9   12      |T   49   44   49   51   48   57   51   49   50   49    48
 WRMS |    9   17    8   10   15    4   12    9    7   12      |NE  52   45   51   53   50   61   54   52   53   52    51
 MEDI |    9   15    8   11   15    4   10   10    8   10      |MD  30   33   30   32   30   31   33   31   32   30    29

Table 3.1958.5   GPS week: 1958   Day: 5   MJD: 57955.000                            

        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
------+--------------------------------------------------------+---------------------------------------------------------
   1E |    7   14   10    6   22    5   11    7    7    9    3 |    29   35   30   31   38   28   30   27   29   28    29
   2E |   14   13    8   10   13    4   11    9    8    9    4 |    22   24   24   27   24   23   27   26   27   27    24
   3  |    6   17    8    4   11    4   10    9    6   10    3 |    26   32   29   26   25   26   31   28   26   29    26
  X4  |    3  ---  ---  ---  ---   46  ---  ---  ---  ---    0 |  9999  ---  ---  ---  ---  168  ---  ---  ---  ---  9999
   5  |   10   12   12   11   12    3   12    8    9   11    4 |    31   36   29   33   30   30   35   28   31   31    30
   6E |    9   19   10    7   26    4   12   10    7    8    4 |    24   32   24   24   26   20   23   25   22   24    22
   7  |   10   16   10    9   23    3    9   12    9   16    4 |    28   27   22   24   26   23   26   24   24   16    23
   8  |    7   15    7    8   13    4   11    6    8    7    3 |    19   26   21   19   19   19   23   17   18   20    18
   9  |    4   14   10    6    8    2   11    7    7    7    3 |    30   39   32   30   24   31   41   31   31   33    31
  10  |    7   12    9    4   11    4   10    5    7    7    2 |    25   28   26   26   28   26   27   27   26   28    26
  11  |    6   14   12    9   14    4   11   12    7    7    3 |    28   33   30   31   28   27   31   29   28   27    28
  12  |    7   32   10    6   17    4   20   14    7    6    4 |    23   25   20   25   19   22   21   20   27   24    21
  13  |    9   14   14   12    9    3    8    7    7   16    4 |    16   22   18   29   15   18   22   16   22   29    19
  14  |    9    9   11    9   10    3   10    8    7   11    3 |    15   16   16   11   12   13   15   15   17   16    13
  15  |    7   22   12   11    8    5   15    9    6   10    4 |    20   25   20   25   19   21   22   20   24   22    21
  16  |   11   23   11   11   21    5   11   19   12   14    5 |    21   23   23   27   21   21   19   25   23   23    20
  17  |    8   16   11   11   18    4   15   11    9   14    4 |    20   27   19   25   15   23   31   25   25   16    20
  18  |   10   29   13   15   21    7   24   17   12   15    6 |    30   36   26   37   29   29   29   37   32   31    29
  19  |    9   20   10   10   18    4   16   10    9   17    4 |    20   28   20   24   19   21   27   23   23   18    19
  20  |    8   20   12   12   16    5   16   10    9   12    4 |    29   33   26   33   31   27   28   25   26   27    27
  21E |   13   16    7   13   21    4   13   10    7    7    4 |    22   24   24   29   24   25   24   25   26   24    23
  22  |   14   16   12    8   16    4   11   12   10   17    5 |    32   34   34   34   38   34   35   36   36   34    33
  23  |    6   22   13    5    9    3   12   12    7   10    4 |    28   25   32   29   27   29   25   31   28   30    29
  24  |    7   14    6    6   13    4   12    5    5    6    2 |    18   25   19   19   21   21   28   18   19   19    18
  25  |    6   18    7    4   13    4   11    7    8    8    3 |   548  454  548  547  546  548  546  545  547  544   547
  26  |   16   16   11   10   22    5   12    9   10    7    4 |    29   30   28   25   29   27   28   26   26   26    26
  27  |    8   12    9    6   15    3   10    9    8    9    3 |    20   25   20   22   18   18   21   18   20   21    19
  28  |   12   16    8   10   15    5   13    8    8   11    4 |    20   23   20   18   21   18   24   20   17   18    17
  29  |    8   28   10   12   19    5   19   16    8    9    5 |    22   25   20   22   18   20   23   25   20   20    19
  30  |    8   23    7    5   17    4   12    5    6   12    3 |    22   28   25   22   26   22   26   23   22   23    22
  31  |    9   19   11   15   22    5   13   10    8   13    4 |    21   26   18   24   19   19   22   21   20   14    18
  32  |    7   14    8    7   11    3   12    9    6   16    3 |    20   34   21   23   21   22   34   20   23   32    22
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |    9   18   10    9   16    4   13   10    8   11      |T   40   41   40   42   40   44   43   41   41   41    39
 WRMS |    9   18   10    8   15    4   13    9    7   11      |NE  43   43   43   44   42   47   45   43   43   43    42
 MEDI |    8   16   10    9   15    4   12    9    8   10      |MD  22   27   24   25   24   23   27   25   25   24    22

Table 3.1958.6   GPS week: 1958   Day: 6   MJD: 57956.000                            

        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
------+--------------------------------------------------------+---------------------------------------------------------
   1E |    7   19    8    8   15    3   10    6    7    7    3 |    32   38   33   31   34   30   31   29   30   30    30
   2E |   15   16    8    9   21    4   13    9    8   12    4 |    28   30   32   34   30   31   30   33   34   33    30
   3  |    5   17    7    6   11    3    8    7    5    8    3 |    37   39   38   35   39   36   38   39   36   39    37
  X4  |    4  ---  ---  ---  ---   63  ---  ---  ---  ---    0 |  9999  ---  ---  ---  ---  134  ---  ---  ---  ---  9999
   5  |   10   10   10   13   19    3   11    8    8   12    4 |    50   50   49   45   52   47   54   45   49   45    47
   6E |    9   19   11    9   15    4   11    7    7   10    4 |    28   34   33   31   24   28   29   29   26   30    28
   7  |   11   14    9   10   19    4   10   10   10   16    4 |    34   32   28   26   34   28   31   28   26   19    27
   8  |    8   14    7    7   12    3    8    9    6    8    3 |    31   33   29   29   31   29   32   28   30   29    29
   9  |    5   15    9    9   10    4   12    8    6    9    3 |    39   47   37   37   32   40   49   45   40   43    39
  10  |    9   14    7    8   14    3    8    6    5    8    3 |    41   43   42   43   45   41   41   42   42   43    41
  11  |    8   12   11    7   17    3    8   10    6    8    3 |    43   47   45   45   43   44   45   45   43   43    43
  12  |    7   30    7    9   16    4   22   14    7    7    4 |    29   30   24   31   29   27   28   24   28   27    26
  13  |   12   11   11   13   15    2    7    8    8   15    4 |    26   27   25   37   21   29   29   28   33   37    28
  14  |    9    8    9   17   13    6    6   10    8   10    4 |    28   24   24   18   24   21   22   27   27   24    23
  15  |    9   16   10   12   14    3   14    9    6    9    4 |    29   29   28   34   26   31   32   28   33   30    29
  16  |   10   21   10   14   20    5   17   18   10   12    5 |    31   29   28   32   27   28   28   28   31   28    27
  17  |   10   15   11   13   14    4    7   11    7   12    4 |    34   36   32   43   34   37   38   40   38   34    35
  18  |    8   28   12   14   21    5   18   17   12   12    5 |    46   46   43   47   48   43   43   50   43   44    43
  19  |   11   21    8   14   13    4   13   11    8   19    4 |    34   39   35   40   35   36   38   40   38   34    35
  20  |    9   15   12   12   21    5   13   11   10   10    4 |    44   41   39   50   44   43   40   40   43   42    42
  21E |   12   18    7   12   24    3   11    9    7    9    4 |    26   29   29   32   30   28   26   32   30   30    28
  22  |   11   15   13   10   17    4   11    9    9   16    4 |    47   47   47   46   50   47   47   47   47   46    46
  23  |    8   24    9    8    7    3   13   12    7    9    4 |    37   35   36   38   35   38   36   44   40   40    38
  24  |    8   11    5    8   16    4    9    7    7    5    3 |    26   31   28   30   30   29   29   26   29   27    27
  25  |    6   19    8    5   18    4   12    8    5    7    3 |   598  453  599  600  593  600  598  599  600  599   599
  26  |   17   14    9    7   18    4    9    8    9    7    4 |    32   30   27   28   34   29   29   29   28   28    27
  27  |    9   10    9    6   16    2    8   12    8    5    3 |    35   34   33   33   35   32   34   31   33   30    32
  28  |    9   14    9   11   13    3    8    7    6   11    3 |    28   28   29   29   31   28   31   29   27   28    27
  29  |   10   28    9   11   14    4   18   13    8    9    4 |    36   38   34   35   34   35   39   36   36   35    34
  30  |    7   22    7   10   17    2   10    7    6    8    3 |    32   38   33   35   36   32   34   33   32   32    32
  31  |   13   14   10   15   25    4   10   10   10   16    5 |    26   33   24   30   32   25   29   26   26   24    24
  32  |    7   15    9   11   16    5   12   12    6   16    4 |    34   43   30   29   31   32   41   35   34   42    33
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |   10   18    9   11   17    4   12   10    8   11      |T   52   49   51   53   52   54   53   52   52   52    51
 WRMS |    9   18    9   10   15    4   12    9    7   10      |NE  55   51   54   56   55   57   56   56   56   55    54
 MEDI |    9   15    9   10   16    4   11    9    7    9      |MD  34   35   33   34   34   32   34   33   33   33    32



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 4.1958   GPS week: 1958   MJD: 57950.0-57956.0

CENT| CLK EPO  |        BRUX       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3002 |U    8     9    20 |U    5     7    19 |U    7     6    16 |
emr | emr 2947 |U   12     9    24 |U    7     7    18 |     9     8    20 |
esa | esa 2976 |     9     9    21 |U    5     6    17 |     7     6    17 |
gfz | gfz 2961 |U    8     9    22 |U    6     7    20 |U    9     7    24 |
grg | grg 2973 |U   10    11    23 |U    9    10    29 |     8     6    19 |
igr | igr 2975 |     9     9    21 |     5     6    17 |     7     6    18 |
igs | igs 2975 |     9     9    20 |     5     7    18 |     7     6    17 |
jpl | jpl 2976 |    11    10    24 |U    6     7    17 |U    8     7    21 |
mit | mit 2976 |    11    12    23 |U    7     8    26 |U   13    16   108 |



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 5.1958.0   GPS week: 1958   Day: 0   MJD: 57950.0

CENT| CLK EPO  |        BRUX       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 2976 |     8     6    13 |     7     6    21 |    10     8    24 |
emr | emr 2976 |    10     7    14 |     6     7    23 |    12    12    25 |
esa | esa 2976 |     9     8    16 |     5     6    18 |     9     8    23 |
gfz | gfz 2974 |     7     8    15 |     7     6    20 |    10     7    24 |
grg | grg 2967 |     8     8    16 |     7     8    22 |    10     7    24 |
igr | igr 2976 |     8     7    16 |     6     6    18 |    10     7    26 |
igs | igs 2976 |     8     7    14 |     7     6    20 |    10     7    24 |
jpl | jpl 2976 |    10     7    20 |     7     6    21 |    11     9    28 |
mit | mit 2976 |     8     7    17 |     7     7    23 |    10     7    23 |

Table 5.1958.1   GPS week: 1958   Day: 1   MJD: 57951.0

CENT| CLK EPO  |        BRUX       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 2976 |    11    10    16 |     5     5    23 |     6     6    11 |
emr | emr 2976 |     9    10    16 |     5     7    18 |     7     8    19 |
esa | esa 2976 |    10    10    16 |     5     5    24 |     5     6    14 |
gfz | gfz 2976 |    11    10    16 |     5     5    22 |     6     6    12 |
grg | grg 2975 |    10    11    16 |     6     6    26 |     7     7    15 |
igr | igr 2976 |    10    10    17 |     4     5    20 |     5     6    12 |
igs | igs 2976 |    10    10    15 |     4     5    21 |     6     6    13 |
jpl | jpl 2976 |     9    11    20 |     5     7    19 |     6     6    17 |
mit | mit 2976 |     9    11    17 |     6     7    30 |     6     5    14 |

Table 5.1958.2   GPS week: 1958   Day: 2   MJD: 57952.0

CENT| CLK EPO  |        BRUX       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 2976 |     5     4    12 |     6     7    18 |     7     6    16 |
emr | emr 2880 |     8     5    23 |     7     6    14 |     8     8    16 |
esa | esa 2976 |     5     4    13 |     6     7    15 |     7     5    17 |
gfz | gfz 2880 |     5     5    13 |     7     7    18 |     7     6    22 |
grg | grg 2976 |     5     6    13 |    16    15    36 |     7     6    18 |
igr | igr 2976 |     5     5    13 |     6     6    17 |     7     5    19 |
igs | igs 2976 |     5     5    13 |     6     7    16 |     7     5    16 |
jpl | jpl 2976 |     7     6    17 |     7     8    15 |     8     8    18 |
mit | mit 2976 |     6     6    17 |     7     9    21 |     8     6    16 |

Table 5.1958.3   GPS week: 1958   Day: 3   MJD: 57953.0

CENT| CLK EPO  |        BRUX       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 2970 |     9    11    38 |     6     6    17 |     8     7    12 |
emr | emr 2971 |    14    12    40 |     6     5    20 |     9     9    14 |
esa | esa 2976 |    11    11    39 |     6     6    17 |     8     6    13 |
gfz | gfz 2971 |    10    11    48 |     7     7    21 |     8     5    15 |
grg | grg 2971 |    14    16    42 |     7     9    21 |     8     6    17 |
igr | igr 2971 |    11    11    39 |     6     6    16 |     7     5    13 |
igs | igs 2971 |    10    12    39 |     6     7    17 |     8     6    12 |
jpl | jpl 2976 |    12    12    40 |     6     7    15 |     9     8    17 |
mit | mit 2976 |    12    13    40 |     7     8    27 |    10     7    15 |

Table 5.1958.4   GPS week: 1958   Day: 4   MJD: 57954.0

CENT| CLK EPO  |        BRUX       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 2978 |    11    12    21 |     4     8    21 |     7     6    18 |
emr | emr 2880 |    16    10    26 |     7    11    14 |     8     6    21 |
esa | esa 2976 |    13    13    23 |     5     8    17 |     7     6    17 |
gfz | gfz 2976 |    12    12    24 |     5     9    22 |     7     6    18 |
grg | grg 2976 |    14    18    34 |     5     9    29 |     7     7    22 |
igr | igr 2976 |    12    12    23 |     5     8    18 |     7     6    19 |
igs | igs 2976 |    12    12    23 |     4     8    19 |     7     6    18 |
jpl | jpl 2976 |    14    12    27 |     5     9    19 |     7     6    19 |
mit | mit 2976 |    18    16    20 |     8    10    37 |     9     8    16 |

Table 5.1958.5   GPS week: 1958   Day: 5   MJD: 57955.0

CENT| CLK EPO  |        BRUX       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3072 |     5     6    14 |     4     7    18 |     8     6    17 |
emr | emr 2976 |     9     6    17 |     7    10    16 |     8     9    23 |
esa | esa 2976 |     5     5    12 |     5     7    16 |     8     5    18 |
gfz | gfz 2976 |     5     5    12 |     5     7    19 |     8     5    18 |
grg | grg 2976 |     4     5    11 |    19    14    51 |    10     6    20 |
igr | igr 2976 |     5     5    13 |     5     7    15 |     8     5    18 |
igs | igs 2976 |     5     5    11 |     4     7    17 |     8     5    18 |
jpl | jpl 2976 |     7     7    15 |     4     8    15 |     9     6    25 |
mit | mit 2976 |    10    15    25 |     5     8    19 |    46    75   658 |

Table 5.1958.6   GPS week: 1958   Day: 6   MJD: 57956.0

CENT| CLK EPO  |        BRUX       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3072 |    10    13    25 |     5     6    14 |     6     7    17 |
emr | emr 2976 |    16    13    30 |     9     7    23 |     7     6    19 |
esa | esa 2976 |    12    14    26 |     6     6    15 |     6     6    16 |
gfz | gfz 2976 |    10    13    25 |     5     7    15 |    18    16    57 |
grg | grg 2976 |    12    14    27 |     5     6    21 |     6     5    18 |
igr | igr 2976 |    12    14    26 |     5     6    14 |     6     6    17 |
igs | igs 2976 |    11    14    26 |     5     6    15 |     6     5    16 |
jpl | jpl 2976 |    15    15    29 |     6     6    16 |     7     9    20 |
mit | mit 2976 |    13    14    26 |     7     8    21 |     5     8    15 |


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 6.1958   GPS week: 1958   MJD: 57950.500-57956.500

                                                         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 |      -9       5      -3     102      1 |      14     19
            |      10      13      54      95      4 |       2
emr   uuuuu |      16       1     187      98     -4 |      34     37
            |      32      26     128     101     17 |       1
esa   uuuuu |      14       7     -46     121      3 |      14     19
            |       3       6      29      54      2 |       2
gfz   uuuuu |     -41      -3      85    -262      3 |      26     28
            |      15      10     145     149      3 |       2
grg   uuuuu |      -5      -1      22     -57     -4 |       4     12
            |      19      16      47      79      3 |       2
igr   xxxxx |       5       2      24      11      5 |       2     12
            |      16      14      35      49      6 |       3
irf   xxxxx |       1      -8      -8     -28     -2 |       2     13
            |       7       9      29      38      3 |       2
jpl   xxxxx |      48     -26     139      77     11 |      24     28
            |      28      20      82      64     13 |       3
mit   uuuuu |       7      11     -46     -71     -1 |      24     27
            |      10      15      57      46      5 |       2
ngs   uuuuu |       1     -18     -43     -44      5 |      13     18
            |      37      22     141     157      7 |       3
sio   uuuux |      24       0     -31      86     -5 |      52     53
            |      17      15      76      94      5 |       3


Table 7.1958.0   GPS week: 1958   Day: 0   MJD: 57950.500

                                                         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     -10      34      69      1 |      15     19
emr   uuuuu |     -33     -42     389     241     11 |      34     37
esa   uuuuu |      14       8     -33      83      0 |      15     19
gfz   uuuuu |     -39     -20     228    -341      3 |      26     28
grg   uuuuu |     -23     -25     -23     -23     -1 |       6     12
igr   xxxxx |     -19      11     -23     -20     16 |      -1     12
irf   xxxxx |       3       6     -70      15     -5 |       3     12
jpl   xxxxx |       8     -32      20      24     38 |      23     27
mit   uuuuu |      -2      43    -158     -46     -3 |      26     28
ngs   uuuuu |      34       8    -162     -33     -1 |      17     20
sio   uuuux |      34      13    -102     161     -3 |      56     57

Table 7.1958.1   GPS week: 1958   Day: 1   MJD: 57951.500

                                                         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 |     -20       9      76     181      1 |      16     19
emr   uuuuu |      19      39      15      88     16 |      34     37
esa   uuuuu |      15       6     -42     141      1 |      14     19
gfz   uuuuu |     -37       1     141    -322     -1 |      26     28
grg   uuuuu |     -16     -13      64     -91     -1 |       6     12
igr   xxxxx |       5      19      48      11     10 |       1     12
irf   xxxxx |      -2     -17      17     -19     -7 |       3     12
jpl   xxxxx |      37       2     141      -8     13 |      24     28
mit   uuuuu |       5       3     -24     -70     -5 |      26     28
ngs   uuuuu |       5     -20    -191    -110     -1 |      16     20
sio   uuuux |      37     -16      27     177     -3 |      55     56

Table 7.1958.2   GPS week: 1958   Day: 2   MJD: 57952.500

                                                         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 |     -24      15     -51     -11      0 |      13     18
emr   uuuuu |      33      -6      79     205     10 |      32     35
esa   uuuuu |      12      16      -3      46      0 |      12     17
gfz   uuuuu |     -60      -6     176    -395      4 |      24     26
grg   uuuuu |     -10      23      15     -61      0 |       3     11
igr   xxxxx |      17       9      11      45      9 |      -1     12
irf   xxxxx |       0      -2       5     -24     -2 |       0     14
jpl   xxxxx |      52      -6      73     123     12 |      21     25
mit   uuuuu |       3      14     -43     -59     -5 |      23     26
ngs   uuuuu |      39     -47    -133     171     -3 |      12     17
sio   uuuux |       1       2      65      78      0 |      51     52

Table 7.1958.3   GPS week: 1958   Day: 3   MJD: 57953.500

                                                         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      -4     -35      77      6 |      13     18
emr   uuuuu |       2      11     140      58    -26 |      34     37
esa   uuuuu |       8       4     -71      77      6 |      13     18
gfz   uuuuu |     -63      -3     -97    -386      3 |      24     27
grg   uuuuu |      -5     -10      98     -20     -5 |       3     11
igr   xxxxx |     -14     -22      38      57      4 |       1     13
irf   xxxxx |     -12     -20     -13     -57      1 |       1     14
jpl   xxxxx |      17     -56     214      17      3 |      23     27
mit   uuuuu |      -2       2     -64     -65     -2 |      23     26
ngs   uuuuu |      36      11      83     136      5 |      11     15
sio   uuuux |      -1     -23      56     -24     -7 |      51     52

Table 7.1958.4   GPS week: 1958   Day: 4   MJD: 57954.500

                                                         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       2     -76     100     -6 |      13     18
emr   uuuuu |      -8      17     182     -62    -14 |      31     36
esa   uuuuu |      16       4     -74     138      2 |      12     17
gfz   uuuuu |     -29      12     -67    -286      5 |      23     26
grg   uuuuu |      35       4      28      51     -5 |       1     12
igr   xxxxx |      21      10     -12      28      1 |       1     13
irf   xxxxx |       6     -13      13     -41     -2 |      -1     14
jpl   xxxxx |      65     -21     244     141      5 |      22     27
mit   uuuuu |       3       5      25    -101     -4 |      21     25
ngs   uuuuu |     -21     -22     160     -42     11 |      10     14
sio   uuuux |      24      -4     -79      78    -11 |      48     50

Table 7.1958.5   GPS week: 1958   Day: 5   MJD: 57955.500

                                                         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      -5      27     268      1 |      16     18
emr   uuuuu |      57       6     197     101     -7 |      34     38
esa   uuuuu |      17       0     -77     193      4 |      16     19
gfz   uuuuu |     -36       4     -31     -83     -1 |      27     29
grg   uuuuu |      -8      12       7    -205     -8 |       3     11
igr   xxxxx |       7      -3      26     -85     -1 |       5     10
irf   xxxxx |       4      -6      -4     -90     -1 |       2     13
jpl   xxxxx |      80     -38     192     110      8 |      26     29
mit   uuuuu |      16       3      -9    -150      4 |      24     27
ngs   uuuuu |     -38     -18      66    -156     13 |      14     18
sio   uuuux |      34      16     -88     -49      3 |      50     51

Table 7.1958.6   GPS week: 1958   Day: 6   MJD: 57956.500

                                                         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      25       7      28      6 |      16     20
emr   uuuuu |      45     -15     306      54    -20 |      35     39
esa   uuuuu |      14      14     -23     169      4 |      17     22
gfz   uuuuu |     -25      -6     243     -21      6 |      29     31
grg   uuuuu |      -6       5     -37     -47     -6 |       4     12
igr   xxxxx |      19      -9      77      39     -1 |       6     13
irf   xxxxx |       7      -2      -2      18      1 |       3     14
jpl   xxxxx |      75     -30      86     135      1 |      29     33
mit   uuuuu |      25       7     -46      -3      7 |      25     28
ngs   uuuuu |     -49     -38    -126    -273      8 |      15     21
sio   uuuux |      36       9     -93     182    -11 |      51     52



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