[IGSREPORT-26904] Wk 2076 IGS Final Orbits

acc acc at igs.org
Mon Nov 11 02:51:10 PST 2019


Author:  AC Coordinator / GA MIT 

sum-file Version 2.0
Final IGS Orbit Combination - Week 2076   (Oct 20, 2019 - Oct 26, 2019)

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:

igs2076[0-6].sp3  IGS GPS ephemeris files in SP3 format.
igs2076[0-6].clk  IGS GPS satellite and station clocks in clock RINEX format.
igs2076[0-6].cls  IGS GPS clock combination summary report.
igs20767.erp      Earth Rotation Parameters (ERP) and their rates as well as
                  Universal Time (UT1-UTC) and Length Of Day (LOD) associated 
                  with IGS ephemerides.
igs20767.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   | 18 18 DAV1 TIXI DAV1 LHAZ TIXI
                0  |  EMR   | 18 PTBB NLIB
                0  |  ESA   | 18 18 ABMF AREG CEDU COCO DARW DAV1 DGAR FAA1 GRAZ
                0  |  ESA   | HARB HERS HOB2 KIRU KOUG MAJU MAL2 MAR6 MAS1 MAW1
                0  |  ESA   | MGUE MOBS NKLG NNOR ONSA PTBB TONG TOW2 VILL ABMF
                0  |  ESA   | AREG CEDU COCO DARW DAV1 DGAR FAA1 GRAZ HARB HERS
                0  |  ESA   | HOB2 KIRU KOUG MAJU MAL2 MAR6 MAS1 MAW1 MGUE MOBS
                0  |  ESA   | NKLG NNOR ONSA PTBB TONG TOW2 VILL
                0  |  GFZ   | 13 BJNM GODE REUN BJNM GODE REUN
                0  |  GRG   | 17 CCJ2
                0  |  MIT   | 18 PALM DAV1 PALM
                1  |  COD   | BJNM TIXI BJNM TIXI
                1  |  EMR   | 18 18
                1  |  ESA   | 18 18 AREG CEDU COCO DARW DAV1 DGAR FAA1 GRAZ HARB
                1  |  ESA   | HERS HOB2 KIRU KOUG MAJU MAL2 MAR6 MAS1 MAW1 MGUE
                1  |  ESA   | MKEA MOBS NKLG NNOR ONSA PTBB TOW2 USN7 VILL AREG
                1  |  ESA   | ASCG CEDU COCO DARW DAV1 DGAR FAA1 GRAZ HARB HERS
                1  |  ESA   | HOB2 KIRU KOUG MAJU MAL2 MAR6 MAS1 MAW1 MGUE MKEA
                1  |  ESA   | MOBS NKLG NNOR ONSA PTBB TOW2 USN7 VILL
                1  |  GFZ   | GODE REUN GODE REUN
                1  |  GRG   | 18 18 CPVG CPVG
                1  |  MIT   | 18
                2  |  COD   | TIXI TIXI
                2  |  EMR   | 18 18 PTBB
                2  |  ESA   | AREG CEDU COCO DARW DAV1 DGAR FALK GRAZ HERS HOB2
                2  |  ESA   | KIRU KOUG LAUT MAJU MAR6 MAS1 MAW1 MGUE MOBS NNOR
                2  |  ESA   | ONSA PTBB TONG TOW2 USN7 VILL AREG CEDU COCO DARW
                2  |  ESA   | DAV1 DGAR FALK GRAZ HERS HOB2 KIRU KOUG LAUT MAJU
                2  |  ESA   | MAR6 MAS1 MAW1 MGUE MOBS NNOR ONSA PTBB TONG TOW2
                2  |  ESA   | USN7 VILL
                2  |  GFZ   | 18 18 GODE KERG NTUS REUN GODE KERG NTUS REUN
                2  |  GRG   | 13 13 SEYG SEYG
                2  |  JPL   | 18 NOVM NOVM
                2  |  MIT   | 18 GOPE NTUS
                3  |  COD   | 18 18 ANKR TIXI ANKR TIXI
                3  |  EMR   | 18 18 HOB2 HOB2
                3  |  ESA   | 18 18 AREG CEDU COCO DARW DAV1 DGAR GRAZ HARB HERS
                3  |  ESA   | HOB2 KIRU KOUG MAJU MAL2 MAR6 MAS1 MAW1 MGUE MOBS
                3  |  ESA   | NKLG NOVM ONSA PTBB SEYG TONG TOW2 VILL AREG CEDU
                3  |  ESA   | COCO DARW DAV1 DGAR GRAZ HARB HERS HOB2 KIRU KOUG
                3  |  ESA   | MAJU MAL2 MAR6 MAS1 MAW1 MGUE MOBS NKLG NOVM ONSA
                3  |  ESA   | PTBB RAMO SEYG TONG TOW2 VILL
                3  |  GFZ   | 13 13 31 GODE REUN GODE REUN SCOR
                3  |  MIT   | 18 SCOR
                4  |  COD   | ASCG KERG SFER TIXI ASCG SFER TIXI
                4  |  EMR   | 18 18 QAQ1 FAIR KERG QAQ1 SCH2
                4  |  ESA   | 18 18 AREG CEDU COCO CPVG DARW DAV1 DGAR GRAZ HARB
                4  |  ESA   | HERS HOB2 KERG KIRU KOUG MAJU MAL2 MAR6 MAS1 MAW1
                4  |  ESA   | MGUE MOBS NKLG ONSA REUN SEYG TONG TOW2 TWTF VILL
                4  |  ESA   | AREG CEDU COCO CPVG DARW DAV1 DGAR GRAZ HARB HERS
                4  |  ESA   | HOB2 KIRU KOUG MAJU MAL2 MAR6 MAS1 MAW1 MGUE MOBS
                4  |  ESA   | NKLG ONSA REUN SEYG TONG TOW2 TWTF VILL
                4  |  GFZ   | 18 13 18 BJNM GODE REUN SALU BJNM GODE REUN SALU
                4  |  GRG   | 13 24 13 24 MAC1 RGDG TLSE MAC1 RGDG TLSE
                4  |  JPL   | KERG
                4  |  MIT   | SFER
                5  |  COD   | 18 18 ASCG TIXI ASCG TIXI
                5  |  EMR   | 18 MCM4 PTBB SUWN WHIT YELL FAIR MCM4 PTBB SUWN WHIT
                5  |  EMR   | YAR2 YELL
                5  |  ESA   | 18 18 CEDU CHUR COCO DARW DAV1 DGAR FAA1 GRAZ HARB
                5  |  ESA   | HERS HOB2 IQAL KIRU KOUG MAJU MAL2 MAR6 MAS1 MAW1
                5  |  ESA   | MGUE MOBS NKLG ONSA PTBB SCOR TONG TOW2 VILL CEDU
                5  |  ESA   | CHUR COCO DARW DAV1 DGAR FAA1 GRAZ HARB HERS HOB2
                5  |  ESA   | IQAL KIRU KOUG MAJU MAL2 MAR6 MAS1 MAW1 MGUE MOBS
                5  |  ESA   | NKLG ONSA PTBB SCOR TONG TOW2 VILL
                5  |  GFZ   | BJNM CCJ2 GODE IISC REUN BJNM CCJ2 GODE IISC REUN
                5  |  GRG   | 18 18 BAKE NRIL BAKE NRIL
                5  |  JPL   | MAW1 MAW1 NOVM
                5  |  MIT   | BJNM
                6  |  COD   | 18 18 ASCG FAIR KARR SEYG TIXI ASCG FAIR KARR SEYG
                6  |  COD   | TIXI
                6  |  EMR   | PTBB
                6  |  ESA   | 18 18 BAKE CEDU COCO DARW DAV1 DGAR FAA1 FALK GRAZ
                6  |  ESA   | HARB HERS HOB2 IISC KIRU KOUG MAJU MAL2 MAR6 MAS1
                6  |  ESA   | MAW1 MGUE MOBS NAUR NKLG ONSA PTBB TONG TOW2 VILL
                6  |  ESA   | BAKE CEDU COCO DARW DAV1 DGAR FAA1 FALK GRAZ HARB
                6  |  ESA   | HERS HOB2 IISC KIRU KOUG MAJU MAL2 MAR6 MAS1 MAW1
                6  |  ESA   | MGUE MOBS NAUR NKLG ONSA PTBB TONG TOW2 VILL
                6  |  GFZ   | GODE REUN BJNM GODE REUN
                6  |  GRG   | 13 13 LHAZ NRIL LHAZ NRIL
                6  |  JPL   | 18 SEYG SEYG

 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
               ----+--------+---------------
                3  |  COD   |   4
                4  |  COD   |   4
                4  |  GRG   |  24
                4  |  JPL   |  30
                5  |  COD   |   4
                6  |  COD   |   4

 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 G24 |  4 |  4 |  4 |  4 |  4 |  4 |  4 |
           PRN G30 |  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 |    1.1     .1    1.4       1     14     -4    -.67
       EMR  |   0 |    6.1    4.0    8.7      13     38    -30    -.69
       ESA  |   0 |    2.2    -.9     .7       8     29     53    -.63
       GFZ  |   0 |    1.1    1.4    1.3      54     11     20    -.67
       GRG  |   0 |    -.8    6.2   29.0     100     -6    173    -.16
       JPL  |   0 |    6.5    3.2    7.9      -4     17      9    -.82
       MIT  |   0 |     .1    4.3    5.7      41     38    -19    -.50
       NGS  |   0 |   -4.1    5.1    6.0      37     83    -58    -.36
       SIO  |   0 |    1.7    5.2   11.2      39    -22      1    -.46

       COD  |   1 |     .4     .2    1.3      16     19      1    -.58
       EMR  |   1 |   12.2    7.9    6.6       6     18    -37    -.28
       ESA  |   1 |    2.1    -.6     .1      24     22     38    -.56
       GFZ  |   1 |     .7    1.3    1.2      49     14     24    -.55
       GRG  |   1 |    3.3    4.7   17.4      64     -9    143    -.15
       JPL  |   1 |    7.3    2.6   10.7      16      8    -17    -.72
       MIT  |   1 |    5.0    2.4    9.2      16     37    -16    -.37
       NGS  |   1 |    2.8    4.4   21.0      64    115    -49    -.34
       SIO  |   1 |    4.1    1.2   14.1      24      6     16    -.47

       COD  |   2 |     .8    -.1     .9      12     13      2    -.56
       EMR  |   2 |    5.9     .9   13.4      -8     49    -71    -.46
       ESA  |   2 |    2.5   -1.3     .9       1     23     45    -.52
       GFZ  |   2 |    1.0     .4    1.3      43     12     39    -.57
       GRG  |   2 |    4.9    3.1   19.7      89    -21    145    -.27
       JPL  |   2 |    7.1     .9   13.1      13      6    -11    -.73
       MIT  |   2 |    3.4    4.2   10.0       7     51     -1    -.70
       NGS  |   2 |    2.0    2.2   12.7      39     64    -58    -.74
       SIO  |   2 |    2.5    3.6   16.6      26     11     -7    -.54

       COD  |   3 |     .3    -.0    1.0      17     24     10    -.55
       EMR  |   3 |    5.6    7.1    8.9     -17     31   -102    -.16
       ESA  |   3 |    1.4    -.0    -.0      23     18     56    -.43
       GFZ  |   3 |     .5    2.1    1.0      71     13     23    -.43
       GRG  |   3 |    3.9    3.4    8.7      73      7    157    -.34
       JPL  |   3 |    6.3   11.5    4.7      22      1    -25    -.48
       MIT  |   3 |    2.7    2.5    7.4      21     44    -12    -.55
       NGS  |   3 |   -2.3    5.1   14.6      47    124    -22    -.44
       SIO  |   3 |    2.2    4.1    9.2      26     -4     10    -.60

       COD  |   4 |    1.1     .0    1.6      20     25      3    -.69
       EMR  |   4 |    5.5    6.0   10.6     -19     40   -104    -.35
       ESA  |   4 |    2.4    -.2     .0      18     12     66    -.70
       GFZ  |   4 |    1.0    1.5    1.5      49     -2     25    -.57
       GRG  |   4 |    4.6    2.8    4.2     116      2    217    -.75
       JPL  |   4 |    5.6    6.0    5.7      19      6      6    -.67
       MIT  |   4 |    3.5    6.3    3.9      11     66    -17    -.54
       NGS  |   4 |    2.4    4.1   17.9      54     90    -61    -.58
       SIO  |   4 |   -1.7    8.5    2.7       8    -10    -28    -.41

       COD  |   5 |     .5     .5    1.6      21     16      1    -.81
       EMR  |   5 |     .5    8.8    8.2     -16     37    -88    -.45
       ESA  |   5 |    2.3    -.2     .0      33      9     78    -.70
       GFZ  |   5 |     .5    1.2    1.2      56     29     33    -.61
       GRG  |   5 |    5.4    6.6    2.6      86     40    161    -.43
       JPL  |   5 |   11.8    4.0    9.8     -16     -8      3    -.97
       MIT  |   5 |    7.4    6.1    7.9      -8     37     -2    -.54
       NGS  |   5 |    1.7    3.9    7.5      52     46    -57    -.57
       SIO  |   5 |    5.8    4.0   19.3      12     -5     -9    -.54

       COD  |   6 |     .1     .2    1.2      10     21      5    -.54
       EMR  |   6 |    6.2    2.0   14.3     -23     39   -104    -.29
       ESA  |   6 |    2.4    -.5    -.2      20      4     60    -.47
       GFZ  |   6 |     .9     .7     .6      50     16     34    -.43
       GRG  |   6 |   -1.6    1.8   -4.9     128     25    139    -.21
       JPL  |   6 |    8.2    -.3    9.1      -5    -22      1    -.67
       MIT  |   6 |    4.8    3.4    8.3     -18     31     -7    -.39
       NGS  |   6 |    1.3    3.1   10.3      39     29      2    -.25
       SIO  |   6 |    4.6    -.3   15.2      11    -16     -4    -.30


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 1.2076.a). It also displays the computed satellite
position sigmas for the combined orbits (Table 1.2076.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 2.2076.[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 3.2076.[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 5.2076.0-6). 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 2076 summary.                       (Oct 20, 2019 - Oct 26, 2019)

Table 1.2076.a   GPS week: 2076   MJD: 58776.000-58782.000

         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  252|   -3     0    -1    10    24    15   .01   10    9 |    -650       5      8    100
        |    0     0     2    16    19    11   .04           |     148     332
emr   79|    2     0     3   -26     4    -2   .16   12   12 |  141608     286     15    107
        |    0     1     2    12     7    14   .02           |     380     590
esa  149|   -1     0     1   -18    -5    -3  -.02    9    9 |     624    -507      9    133
        |    0     0     1    14    13     9   .02           |    2148     561
gfz  181|    0    -1    -6    14   -10   -21   .06   11   10 |    -341     303     12    112
        |    0     0     1    15    16    16   .02           |     233     322
grg   92|    1     0     0     3   -13    89  -.15   15   12 |      13      55     10    143
        |    0     1     7    11    19    35   .04           |     180     360
igr  n/a|    0     0    -2   -20   -15   -27   .01    4    4 |   10693    -647     11     72
        |    0     0     0    16    12    10   .02           |    2083     975
jpl   80|    1     0     1     1     9   -20   .19    8    8 |  212463     427      8     83
        |    0     1     1    11     4    16   .02           |     541     608
mit  348|    0    -1    -5    -3   -11     1  -.14   17   14 |    -548    -133     71   1725
        |    0     0     1    31    27     8   .02           |     482     315
ngs  208|    0     0     6     9    -6   -13  -.08    8    7 |    -652       9    943   2144
        |    0     0     3    29    24    12   .02           |     130     318
sio  313|    0    -2    -4   -18    -7     0  -.09   15   15 |     ---     ---    ---    ---
        |    0     0     1    39    31    40   .05           |     ---     ---


Table 1.2076.b   GPS week : 2076   MJD: 58776.000-58782.000   

         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    4    3    4    3    4 |
   2  |    4    4    4    4    4    4    4 |
   3  |    3    3    3    3    3    3    3 |
   4  |  ---  ---    0    0    0    0    0 |
   5  |    3    3    3    3    4    3    3 |
   6  |    3    3    3    3    3    4    3 |
   7  |    4    4    4    4    4    4    4 |
   8  |    4    4    4    4    5    5    5 |
   9  |    4    4    4    4    4    4    4 |
  10  |    2    3    3    3    3    3    3 |
  11  |    4    4    4    4    4    4    4 |
  12  |    4    4    4    4    5    4    4 |
  13  |    4    4    4    4    4    3    4 |
  14  |    3    3    3    4    4    3    4 |
  15  |    4    4    4    4    5    4    4 |
  16  |    4    4    4    4    4    4    4 |
  17  |    4    4    4    4    4    4    4 |
  18  |    3    4    4    4    4    4    4 |
  19  |    4    4    4    4    5    4    4 |
  20  |    3    4    4    4    4    4    4 |
  21  |    5    5    5    5    5    5    5 |
  22  |    3    3    3    3    3    3    3 |
  23  |    5    5    5    5    5    5    5 |
  24  |    4    4    5    5   12    5    5 |
  25  |    3    3    3    3    4    4    3 |
  26  |    3    3    4    4    4    3    3 |
  27  |    4    4    4    4    5    5    4 |
  28  |    5    4    5    4    5    4    4 |
  29  |    4    4    4    5    5    4    5 |
  30  |    4    4    4    4   15    4    4 |
  31  |    3    4    4    4    4    4    4 |
  32  |    3    4    3    4    4    3    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 2.2076.0   GPS week: 2076   Day: 0   MJD: 58776.000                            

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  251|   -2     0     0     3    23    -3   .01    8    7 |    -472    -264      6    104
emr   80|    0     0     1   -23    11     8   .15   13   13 |  141363     658     16     99
esa  150|    0     1     0   -38    17    13  -.04    9    8 |    3962     -98      7    130
gfz  182|    0    -1    -7    12    -6   -40   .09   11   10 |    -575     384     14    115
grg   97|    1     0     9    -3   -19    44  -.12   11   10 |    -146     258     11    151
igr  n/a|    0     0    -1   -35   -36   -38   .05    4    4 |   12295     732     11     68
jpl   80|    1     0     2    -7     7   -10   .18    7    7 |  211869     658      9     91
mit  349|    0    -1    -4    45   -23    -8  -.13   16   13 |   -1042      17     67   1696
ngs  212|    0     0     1    21   -15    -4  -.09    7    6 |    -465    -276    843   1902
sio  315|    0    -1    -5    11   -14    -2  -.03   13   12 |     ---     ---    ---    ---

Table 2.2076.1   GPS week: 2076   Day: 1   MJD: 58777.000                            

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  252|   -2     0    -1   -11    60     7  -.02    9    8 |    -693      10      7     88
emr   80|    2     1     0    -2     0    16   .15   12   12 |  142125    -284     17    100
esa  150|    0     1     0   -25    -8    -6  -.05    9    9 |    -594     -41      8    127
gfz  186|    0    -1    -3    18    -6   -33   .07   10   10 |    -307     527     11    100
grg   87|    0     0     1     1    -8    85  -.10   10   10 |     135     149      9    144
igr  n/a|    0     0    -3   -39   -16   -17   .01    4    4 |   13060    -514     10     64
jpl   80|    1     0     0     7     1   -28   .18    7    7 |  212669    -218      7     65
mit  348|    0     0    -6   -39     9   -10  -.14   17   13 |    -672     228     64   1773
ngs  209|    0     0     7    33   -37   -19  -.07    8    7 |    -628     -44    754   2065
sio  313|    0    -3    -5   -48     7    40  -.07   15   15 |     ---     ---    ---    ---

Table 2.2076.2   GPS week: 2076   Day: 2   MJD: 58778.000                            

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  255|   -3     0    -3     0    38    13   .05   10    9 |    -685      -6      7    106
emr   80|    0     0     3   -35    -2     5   .19   12   12 |  140944     784     16    112
esa  145|    0     1     0   -25    -9    -4  -.05    9    8 |    -611   -1448      7    121
gfz  178|    0     0    -8    -4   -13    -1   .05   11   11 |    -711     786     12    107
grg   86|    1     0     5     8   -31   119  -.13   13   13 |      23    -105     12    140
igr  n/a|    0     0    -2   -26   -19   -23   .01    4    4 |   11640       1     10     72
jpl   80|    2    -1     2     7     9   -42   .19    7    7 |  211585     972      8     90
mit  344|    0    -1    -5    21     5     2  -.12   17   13 |   -1196     141     50   1515
ngs  203|    0     0     5    -5    -7     0  -.09    8    7 |    -679     -12   1537   2498
sio  318|    0    -2    -7    30    14   -11  -.14   15   16 |     ---     ---    ---    ---

Table 2.2076.3   GPS week: 2076   Day: 3   MJD: 58779.000                            

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  251|   -3     0    -2     0    19    15   .07   10    9 |    -874     535      8     99
emr   80|    3     0     2   -39     0   -19   .19   12   12 |  141668     164     16    150
esa  150|   -1     0     1   -16     6   -11  -.01    9    8 |    -581    -481     10    133
gfz  185|    0    -2    -6    16    21   -33   .04   11   10 |    -266     335     12    115
grg   97|    1     0     0    -7   -16   111  -.18   12   12 |    -269     684     10    160
igr  n/a|    0     0    -1   -23    -9   -44  -.01    4    4 |   11528   -1085     11     66
jpl   80|    0     2     0    11    10   -41   .18    7    7 |  212437     262     10     85
mit  350|    0     0    -5    17   -51    15  -.14   17   14 |    -143    -219     67   1784
ngs  210|    1     0     8   -10     0     2  -.06    8    7 |    -826     521    972   1999
sio  313|    0    -3    -3    20   -60    46  -.17   14   14 |     ---     ---    ---    ---

Table 2.2076.4   GPS week: 2076   Day: 4   MJD: 58780.000                            

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  252|   -5     2    -5    34     4    16  -.05   12   11 |    -460    -474     12    110
emr   79|    2    -1     2   -38     1   -22   .15   13   12 |  141916    -500     14    103
esa  150|   -2     0     3     5    -6   -15  -.00   10    9 |    3558     130     14    133
gfz  175|    0    -1    -7    26   -33   -21   .06   12   11 |     -16      31     12    129
grg   92|    2     0    -5    16     0   140  -.22   36   16 |     282    -447     12    120
igr  n/a|    0     0    -2     8    -6   -24  -.01    5    4 |   10481   -2175     14     88
jpl   80|    3     1     0    10    14   -12   .22   10    8 |  212801    -279     10    102
mit  349|    0     0    -6   -19    29     5  -.17   19   15 |    -389    -656    121   1729
ngs  205|    0     0    12   -26   -24   -23  -.11   10    8 |    -501    -454   1107   2647
sio  308|    0     0    -3   -35    35    11  -.07   17   16 |     ---     ---    ---    ---

Table 2.2076.5   GPS week: 2076   Day: 5   MJD: 58781.000                            

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  255|   -2     0    -1    25    12    31  -.00   10   10 |    -752     281      9     98
emr   80|    2     0     5   -19     6     2   .16   13   13 |  141652      58     15     91
esa  150|   -1     0     2    -3   -11    -1  -.02    9    8 |    -890    -942     11    147
gfz  182|    0    -1    -7    35   -12   -23   .08   10    9 |    -320    -203     14    128
grg   95|    1     2    -3    -9    20    69  -.14   12   12 |      71    -184      9    148
igr  n/a|    0     0     0    -9     0   -22   .01    4    4 |    8597   -1386     12     82
jpl   80|    1    -1     3     0    11   -14   .19    8    8 |  212834     225     10     77
mit  349|    0    -1    -3   -32   -33     2  -.16   18   16 |     180    -412     64   1731
ngs  210|    0     1     2    -2     3   -29  -.06    8    7 |    -726     165    636   1854
sio  312|    0    -1    -3   -35    -5   -15  -.06   15   15 |     ---     ---    ---    ---

Table 2.2076.6   GPS week: 2076   Day: 6   MJD: 58782.000                            

CENT STA|   DX    DY    DZ    RX    RY    RZ   SCL  RMS  WRMS|    TOFT   TDRFT   SDEV    RMS
        |  [mm]  [mm]  [mm] [uas] [uas] [uas] [ppb] [mm] [mm]|    [ps]  [ps/d]   [ps]   [ps]
--------+----------------------------------------------------+------------------------------
cod  253|   -2     1     0    22    11    26   .01    9    9 |    -620     -44      7     99
emr   80|    2    -1     6   -24    18    -6   .14   12   12 |  141592    1122     15     97
esa  150|   -1     0     1   -23   -23     3  -.00    9    9 |    -474    -670     11    142
gfz  180|   -1     0    -6    -6   -19     2   .07   12   12 |    -192     262     12     96
grg   96|    0     2   -12    20   -35    55  -.13   11   10 |      -4      36     12    142
igr  n/a|    0     0    -2   -18   -22   -18   .03    5    5 |    7253    -106     11     64
jpl   80|    1     0     3   -19     7     2   .22    8    8 |  213048    1369      8     77
mit  350|    0    -1    -3   -15   -14     1  -.14   17   15 |    -577     -34     66   1852
ngs  212|    0     0     5    57    38   -20  -.09    8    7 |    -739     163    755   2046
sio  312|    1    -1    -1   -72   -30   -74  -.06   16   14 |     ---     ---    ---    ---

       
       
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 3.2076.0   GPS week: 2076   Day: 0   MJD: 58776.000                            

        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   10    7    9    3    6    8    7   10    3 |    26   30   28   28   28   25   29   23   22   28    25
   2  |    9   11    6    8    8    4    6   19   11   19    3 |    32   29   29   30   30   29   30   35   31   30    29
   3  |    7   10    5    9   11    4    9   11    6    9    3 |    26   34   26   29   27   26   32   22   21   30    26
   5  |    6   10    7    9    8    4    7   16    6   17    3 |    49   48   50   50   49   49   52   44   48   47    48
   6  |    5   10    8    8    6    4    7    8    6    8    2 |    32   31   32   31   28   30   33   28   32   31    31
   7  |    6    9    7   12   10    3    7   18   10   16    3 |    38   38   36   39   36   36   38   36   38   35    37
   8E |    7   14   16    8   12    3   10    8    8    9    3 |    27   30   26   28   32   27   29   24   28   25    26
   9  |    8   14   18   15   12    5    7    8    7    8    4 |    36   37   37   37   36   36   36   36   38   38    36
  10  |    5    8    5    9    7    4    8   10    5    4    2 |    24   30   25   25   26   25   28   27   26   27    24
  11  |    7   17   12   11   16    4    6   12    8   11    3 |    31   32   28   31   33   30   30   26   29   30    27
  12  |    8   16    7   10    8    4    5   19    7   19    3 |    28   30   26   27   28   27   30   30   30   32    28
  13  |    9    9    6   12   22    5   10   13    7   12    4 |    29   35   30   30   30   29   34   33   36   32    30
  14  |    7    9    6    7   11    3    6   12    6   12    3 |    29   29   29   31   30   28   25   31   27   30    27
  15  |    7   10    6    9   13    3    6   17    6   19    3 |    30   35   29   31   32   28   32   29   32   25    29
  16  |    6   17    7   11    8    3    6   16    8   17    3 |    30   27   28   30   30   28   30   32   29   33    29
  17E |   10   11    8    9   17    3    9   18    7   13    3 |    23   24   25   25   32   24   24   30   23   31    23
  18  |    7   13   10    8   12    7    9   10    9    6    3 |    25   27   27   26   26   27   25   25   25   23    23
  19E |   12   10    8    9   12    4    5   16    9   14    3 |    43   41   36   39   43   38   36   35   39   38    38
  20  |    7    8    6   11    6    4    7   17    5   17    3 |    29   26   28   24   27   26   26   33   26   33    26
  21  |    8   10    8    8   10    5    8   41    7   18    4 |    21   21   21   21   20   20   21   39   21   25    18
  22  |    5    8    8   11    9    4    5   12    5   16    3 |    22   24   21   27   22   21   22   23   19   20    20
  23  |    6   26    6   20   18    6    5   20    7   11    4 |    40   40   39   45   44   39   38   35   38   38    38
  24  |    8   16   14    7    8    5    8   13    4    8    3 |   580  580  582  581  578  582  583  582  581  577   580
  25  |    7    9    8    9    7    4    6    8    6    6    2 |    15   22   20   21   17   18   22   17   18   18    17
  26  |    7    8    7    9    7    2    6    9    7   12    2 |    34   38   35   35   36   35   37   34   36   41    35
  27E |    7   14   16   10    8    4    9    9    9    8    3 |    19   24   16   21   26   17   20   17   21   17    17
  28  |    6   10    8   14   10    4    8   34    6   16    4 |    23   27   23   30   21   23   25   23   22   17    21
  29E |   11   16    7   14   10    5    7   16    8   14    4 |    72   75   73   75   76   73   75   68   74   72    73
  30  |    9   12   14   16   12    4    8   15    9    8    4 |  9999  717 9999 9999  721 9999 9999 9999 9999 9999  9999
  31  |    8   10    7    8    9    4    8   12    7   17    3 |    23   25   19   23   23   21   24   22   23   18    20
  32  |    9   12   13    7   10    5    9    9    7    9    3 |    43   49   44   46   43   46   47   49   49   48    46
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |    8   13    9   11   11    4    7   16    7   13      |T   49   72   48   50   71   48   50   49   49   49    48
 WRMS |    7   13    8   10   10    4    7   13    6   12      |NE  51   79   51   53   77   51   53   52   51   52    50
 MEDI |    7   10    8    9   10    4    7   13    7   12      |MD  29   30   28   30   30   28   30   30   29   30    27

Table 3.2076.1   GPS week: 2076   Day: 1   MJD: 58777.000                            

        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   10   11    6    7    3    7    7    7    9    3 |    23   27   23   22   22   22   25   20   23   25    22
   2  |    7    8    5    8    8    3    6   18    8   20    3 |    29   29   29   28   31   28   30   33   30   30    28
   3  |    7    9    5    7    9    4    7    9    6    9    2 |    23   31   22   26   19   23   30   21   20   28    23
   5  |    7    8    8    7    7    4    6   14    7   19    3 |    42   41   41   43   40   40   43   41   39   41    41
   6  |    5    7    8    9    8    3    6   10    7   10    2 |    29   31   29   25   28   27   32   26   29   32    29
   7  |    6   11    6   17   13    4    6   19    7   18    4 |    31   31   30   36   31   30   31   28   28   24    29
   8E |   11   15   15   10   11    3   10    8   10   10    4 |    24   24   22   21   27   21   23   19   24   20    20
   9  |    7   12   16   12   13    3    7   11    5    9    3 |    30   29   30   29   31   28   29   28   31   28    28
  10  |    7    7    5    9    6    3    7   11    6    7    2 |    21   27   23   18   18   20   25   22   25   24    20
  11  |   12   11   13   11   12    4    7   12    7   12    3 |    27   27   26   28   25   25   27   22   25   25    23
  12  |    9   15    7    7    9    4    6   20    7   20    3 |    23   24   20   22   20   21   25   24   26   25    22
  13  |    8    8    8    6   14    6    7   15    9   18    3 |    24   28   24   26   29   24   30   25   32   25    26
  14  |    9   11    6    7   12    4    8   13    7   12    3 |    26   26   25   28   22   24   21   26   24   24    22
  15  |    8    9    7    6   10    3    6   20   11   24    4 |    25   31   24   29   29   25   29   23   36   20    26
  16  |    9   18    6    9    8    3    7   17   10   20    4 |    27   26   26   28   24   25   27   30   26   29    25
  17E |   11   10    8    9   12    3    8   20    9   15    4 |    20   23   25   27   25   22   23   27   26   29    23
  18  |    8   11   10   12   10    5    8   13    8   12    3 |    21   22   24   26   19   20   23   21   20   21    19
  19E |   12   12    7   11   11    4    6   18   11   13    3 |    32   29   26   31   27   27   26   26   33   28    28
  20  |    9   10    6   12    7    4    6   18    9   19    3 |    30   26   27   25   25   26   25   32   25   34    25
  21  |   10   10    7    7   11    5    9   41    8   23    5 |    20   21   18   18   20   19   22   38   19   24    16
  22  |    8    7    9    7    8    3    5   12    5   16    3 |    17   20   18   20   13   16   19   16   19   13    15
  23  |    9   25    6   18   17    5    6   21    7   14    4 |    33   33   29   37   36   31   31   28   32   31    30
  24  |   10   16   12   12   10    6    8   19    8   16    4 |   450  447  454  454  450  452  452  453  452  451   451
  25  |    8    9    8    7    8    5    5   11    6    7    2 |    16   21   19   19   14   16   20   15   18   16    16
  26  |    8    8    7    9    8    3    6    9    8   15    3 |    30   32   31   28   29   29   33   28   29   36    29
  27E |    9   12   15    9    8    5   10   11    8   12    3 |    20   21   18   18   23   18   21   18   21   17    17
  28  |    7    8   10    9    9    4    7   35    7   16    4 |    20   23   22   23   17   18   24   23   19   15    17
  29E |   12   17    7   10   10    4    6   14    7   13    3 |    60   63   60   59   62   59   63   60   63   61    60
  30  |    7   11   13   11   13    4    9   15    6   11    3 |   805  629  805  806  629  808  808  807  809  812   807
  31  |    8   11    6    8   10    4    7   11   12   17    3 |    20   22   16   22   20   19   21   20   21   15    17
  32  |    9   11   13    7    7    4    9   11    7   11    3 |    33   40   37   38   35   36   37   37   39   38    36
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |    9   12    9   10   10    4    7   17    8   15      |T   65   61   65   66   59   64   66   65   66   65    64
 WRMS |    8   12    9   10   10    4    7   13    7   15      |NE  72   67   72   73   64   71   73   72   72   72    70
 MEDI |    8   11    8    9   10    4    7   14    7   14      |MD  26   27   25   27   25   25   27   26   26   25    25

Table 3.2076.2   GPS week: 2076   Day: 2   MJD: 58778.000                            

        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   11   12   15    9    3    7    9    7   16    3 |    23   24   23   25   25   21   24   21   23   28    21
   2  |   12    9    7    9   11    4    6   15    8   19    3 |    28   27   22   25   24   25   26   28   24   22    22
   3  |    7    8    5    8   10    3    6   10    7    9    2 |    20   29   21   19   17   21   28   18   20   23    21
  X4  |    3  ---  ---  ---  ---   25  ---  ---  ---  ---    0 |    37  ---  ---  ---  ---   50  ---  ---  ---  ---   127
   5  |    5    9    6    7   11    4    7   15    8   17    3 |    35   38   35   35   35   36   39   35   33   33    35
   6  |    7    8   11    9   12    3    5    7    7    8    3 |    20   24   24   20   21   21   25   18   21   22    20
   7  |    8   10    4   14   18    4    6   19    8   16    4 |    45   46   41   51   42   44   44   40   43   41    43
   8E |   12   13   13   16   11    4   11    8   10   11    4 |    21   22   17   17   24   19   24   18   22   19    18
   9  |   10   11   13    9   16    4    8   11    7    9    3 |    30   30   30   31   35   30   31   29   29   31    29
  10  |    9    8    4    7    9    4    7   14    5    9    2 |    29   31   28   28   24   25   32   27   25   29    27
  11  |   12   14   12   14   13    4    5   11    9   12    4 |    33   32   27   30   28   28   31   24   32   32    28
  12  |   10   15    7   10   10    4    6   21    9   18    4 |    34   36   34   34   33   33   37   42   32   40    34
  13  |    9   10    6   13   15    5    7   15    8   18    3 |    25   29   24   24   29   23   27   26   28   26    24
  14  |   10    7    5    7   12    4    7   12    8   10    3 |    22   22   17   24   20   20   20   24   21   22    19
  15  |    8    8    6   12   14    3    5   17    9   18    3 |    36   36   33   34   37   34   35   33   38   31    34
  16  |    9   15    7    9    9    2    7   18   10   20    4 |    36   32   33   34   33   34   35   37   33   34    33
  17E |   14   12    8    7   20    4    8   17    7   14    4 |    21   23   23   22   28   22   22   26   23   28    21
  18  |   10   12   12   16   12    6   10   11   11   12    4 |    24   22   22   25   19   20   20   19   24   20    19
  19E |   15   15    9   10   13    4    6   19   11   13    4 |    37   36   33   32   35   34   33   35   35   32    33
  20  |    9   10    7   11    9    4    6   18    4   20    3 |    22   22   21   18   20   19   21   26   20   26    19
  21  |   10    9    7    9   13    6    9   40    7   22    5 |    19   22   18   19   19   19   23   38   19   22    15
  22  |    8    6    8    7   11    3    4   12    7   16    3 |    21   23   19   21   18   20   23   23   19   20    19
  23  |    8   25    4   12   19    5    5   22    9   15    4 |    26   27   21   27   27   22   22   21   25   18    20
  24  |    9   19   12   17   12    5    9   17    6   13    4 |   607  610  610  611  609  609  612  607  609  602   609
  25  |    9    9    9    9   10    4    6   13   10    9    3 |    21   26   25   26   22   22   27   25   22   25    23
  26  |    9   10    8    7   10    4    7   12    9   17    3 |    43   47   45   43   44   45   49   45   44   50    45
  27E |    9   13   13   18    7    5   11   11   11   13    4 |    22   25   21   19   22   20   25   21   25   18    20
  28  |    9    8    8    9   12    4    6   36    8   16    4 |    30   33   31   33   29   30   32   29   30   24    28
  29E |   15   16    8   12   14    6    7   15   11   15    4 |    41   42   43   42   42   40   43   41   39   41    41
  30  |   10   12   13   14   18    4    7   14    8   10    4 |  9999  653 9999 9999  652 9999 9999 9999 9999 9999  9999
  31  |    8   11    7   11   10    4    9   11    9   13    3 |    29   31   24   30   28   27   33   29   30   24    27
  32  |    8   10   13    8    8    4    8   10    7   10    3 |    44   46   40   43   43   43   45   44   45   44    43
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |   10   12    9   11   13    4    7   17    8   15      |T   47   69   46   48   67   46   49   48   47   47    48
 WRMS |    9   12    8   11   13    4    7   13    7   16      |NE  51   76   50   52   74   50   53   52   51   51    53
 MEDI |    9   10    8   10   12    4    7   14    8   14      |MD  29   30   24   27   28   25   28   27   25   26    27

Table 3.2076.3   GPS week: 2076   Day: 3   MJD: 58779.000                            

        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   10    7   10    2    6    8    5   10    3 |    25   28   26   22   25   23   26   23   25   29    24
   2  |   10    9    8   10   10    3    6   17   10   20    3 |    23   22   19   24   23   21   21   27   26   24    20
   3  |    5    9    5    5   13    3    7   10    7    8    2 |    25   33   25   26   26   24   33   24   24   28    26
  X4  |  204  ---    1  ---  ---  210  ---  ---  ---  ---    0 |    34  ---   72  ---  ---   46  ---  ---  ---  ---    94
   5  |    5    8    8    5    9    3    5   13    5   16    3 |    35   33   33   30   32   31   34   28   33   30    31
   6  |    6    7   11    9   11    3    7    8    6   10    3 |    22   24   22   21   20   20   25   21   23   26    21
   7  |    5   10    6   10   15    3    8   17    8   15    3 |    26   31   27   30   30   26   28   27   30   24    26
   8E |    9   12   15    8   10    4   10    7    7   15    3 |    28   28   26   25   28   26   29   25   29   28    25
   9  |    7    7   14    9   15    4    7   13    6   10    3 |    26   29   27   27   32   24   27   26   25   27    25
  10  |   13    7    4    7   10    5    7   14    9    7    3 |    31   32   26   28   26   23   30   28   26   27    26
  11  |    9   14   11   10   15    5    7   13    8    8    3 |    27   28   25   26   25   24   26   22   26   27    23
  12  |   10   15    8    9   10    3    4   20    8   19    4 |    25   26   22   25   25   23   27   30   28   26    24
  13  |   12    8    9   10   15    4    6   15    6   18    3 |    27   27   20   24   29   21   24   22   23   18    22
  14  |   12    9    7    9   12    3    7   15    9   15    3 |    27   23   21   24   21   21   20   25   21   22    20
  15  |    9   11    8    7   16    2    4   19    9   21    4 |    29   30   25   26   33   26   28   27   31   20    26
  16  |   10   19    5   10    9    3    6   17    8   19    4 |    29   25   25   28   28   25   25   26   24   25    24
  17E |   11   14    7    9   12    4    8   16    7   13    3 |    25   23   26   28   26   25   26   29   26   29    24
  18  |   15   10    9   11   14    6    7   12    8    9    3 |    36   33   32   32   32   34   33   32   38   34    31
  19E |   14   13    6    8   11    4    7   15   10   13    3 |    22   21   21   21   23   20   21   21   26   24    19
  20  |   10   10    9    8   10    4    7   19    7   21    3 |    26   21   22   18   21   21   19   28   27   33    21
  21  |    8    9    7    6   16    5   10   40    6   20    5 |    17   21   16   17   20   16   20   38   20   22    14
  22  |    4    6    8    6   14    4    4   14    6   15    3 |    21   24   20   23   23   19   23   23   20   21    20
  23  |    8   27    5   14   18    5    7   20    9   16    4 |    24   28   23   24   26   21   21   23   25   23    20
  24  |    9   16   13   22   13    4    8   15    8   11    4 |   335  340  339  341  333  336  337  334  333  331   337
  25  |   11   10    9    7    9    3    6   11    9    8    3 |    24   25   27   25   23   22   25   25   25   26    23
  26  |   12   10    6   13   11    3    8   10    9   14    3 |    32   35   32   32   29   30   31   32   31   37    30
  27E |    8   11   13   15   11    5   11   10    9   13    4 |    29   30   27   25   32   27   30   27   31   26    27
  28  |    8   10    7    9   11    4    7   34    5   16    4 |    22   26   23   25   23   21   26   25   23   17    20
  29E |   12   19   10   18   11    4    5   16   10   15    4 |    46   46   50   44   49   44   46   46   44   45    45
  30  |    9   10   14   12   14    3    9   14    6   11    4 |   494  577  492  494  572  492  494  491  487  492   493
  31  |   12   14    8   20   11    4    7   12   11   14    4 |    26   27   21   35   25   23   26   24   25   19    23
  32  |    9   11   11   10   10    3    9   12   10   10    3 |    28   29   25   29   28   24   28   27   24   27    25
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |   10   12    9   11   12    4    7   17    8   14      |T   51   55   51   51   54   49   51   51   51   51    50
 WRMS |    9   12    8   10   12    4    7   14    7   14      |NE  55   60   55   56   58   53   56   56   55   55    55
 MEDI |    9   10    8    9   11    4    7   14    8   14      |MD  26   28   25   26   26   24   26   27   26   26    24

Table 3.2076.4   GPS week: 2076   Day: 4   MJD: 58780.000                            

        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  |   10    9   11    7   12    5    5   19    7   14    3 |    21   26   27   26   24   22   25   30   27   31    24
   2  |   11    9    7    8   14    3    7   17    9   21    4 |    34   32   31   30   33   30   31   31   31   32    30
   3  |   11    9    7    6   12    3    8    8    6   14    3 |    17   27   20   23   18   18   27   22   19   28    20
  X4  |  208  ---    2  ---  ---  206  ---  ---  ---  ---    0 |    33  ---   82  ---  ---   43  ---  ---  ---  ---   105
   5  |   11   12   10    8   13    3    7   20    8   14    3 |    48   50   50   48   48   49   51   50   48   51    49
   6  |    9    8   10    8   16    3    6   10    8   13    3 |    27   31   31   28   31   29   32   26   29   33    29
   7  |   11   12   12    9   21    4   11   15    9   12    4 |    35   39   38   41   36   36   37   34   40   37    36
   8E |    9   13   13   13   20    4    9   12   10   17    4 |    24   25   26   22   33   22   25   22   25   20    22
   9  |   12   10   13    9   19    5    9   11    8    8    4 |    29   28   29   29   27   26   28   25   28   27    26
  10  |    8    8    4    8   12    5    7   16    6   12    3 |    19   29   22   23   21   22   29   24   24   23    22
  11  |   13   11   11    9   16    5    7   12    9   15    3 |    25   25   22   26   23   21   23   20   24   26    20
  12  |   15   12   10    9   16    3   10   22    8   21    4 |    28   30   28   26   29   28   32   34   30   36    28
  13  |   12    9    7   11   18    5    7   13    8   16    3 |    25   24   22   20   26   20   26   19   26   19    21
  14  |    8    9    7    8   13    4    8   15    9   18    3 |    21   24   22   25   20   21   20   25   27   25    21
  15  |   11    9    6   12   17    4    6   18   12   24    4 |    31   31   28   29   35   28   30   24   35   25    28
  16  |   12   17    6    8   13    3    9   17    9   19    4 |    30   30   30   30   30   30   32   35   31   35    30
  17E |   17   10    8   10   21    4    7   16    8   14    4 |    28   25   28   27   29   25   27   29   30   29    25
  18  |   12    9   11   13   13    5   12   13   12   12    4 |    26   29   28   30   25   27   25   24   36   25    25
  19E |   18   12    9   13   17    4    6   17    9   16    4 |    32   25   23   27   27   23   23   22   26   26    23
  20  |    8   10    8   11   12    4    5   22    7   20    4 |    27   27   27   24   29   25   25   33   26   35    26
  21  |    9   11    8    9   18    7    8   42    8   22    5 |    24   27   22   24   28   22   26   42   23   26    21
  22  |    8    7    9    5   12    3    6   12    7   19    3 |    16   19   18   19   14   14   18   16   19   18    15
  23  |   11   26    6   13   19    7    7   21   10   16    5 |    29   34   31   32   31   28   29   26   33   25    28
  24  |   20   36   20   36  180   16   33   38   29   35   11 |   983  986  977  984  928  982  987  981  976  967   981
  25  |   14   12   10    8   12    4    7   15   10   11    3 |    18   23   24   20   19   19   23   18   22   23    18
  26  |   12   11    8    9   11    5   10   10   10   18    3 |    36   39   39   40   37   38   39   37   34   44    37
  27E |   11   12   13   15   14    3   11   11   11   12    4 |    20   24   23   21   26   20   25   22   25   19    20
  28  |   12    9    7    9   16    5    8   36    7   15    4 |    25   28   27   28   25   25   28   29   23   23    23
  29E |   15   17    7   16   20    5    9   18   11   17    5 |    30   35   32   35   44   32   36   35   39   38    34
 X30  |   29  ---   26   31  ---   18  103   26   42   44   15 |  9999  --- 9999 9999  --- 9999 9999 9999 9999 9999  9999
  31  |   16   12    7   10   16    3    9   11   13   17    4 |    25   31   22   30   28   24   27   26   32   29    25
  32  |   11   12   14    7    9    4   10   11    8   15    3 |    35   41   34   34   38   36   39   36   38   41    36
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |   12   13   10   12   36    5   10   19   10   17      |T   58   61   60   60   58   57   60   59   60   60    59
 WRMS |   11   12    9   11   16    4    8   15    8   16      |NE  64   68   66   66   64   63   67   66   67   67    66
 MEDI |   11   11    8    9   16    4    8   16    9   16      |MD  27   28   28   27   28   25   27   26   28   27    25

Table 3.2076.5   GPS week: 2076   Day: 5   MJD: 58781.000                            

        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    8   12    7   10    3    7    9    5   14    3 |    20   24   21   21   20   21   26   22   19   30    21
   2  |   12   10    6    7   10    3    8   19    8   20    3 |    24   19   18   23   20   19   20   23   20   21    19
   3  |    7    9    5    7   11    4    9    7    7    9    2 |    22   29   23   22   19   21   29   21   24   26    22
  X4  |  233  ---    1  ---  ---   33  ---  ---  ---  ---    0 |    30  ---   78  ---  ---  172  ---  ---  ---  ---   106
   5  |   10    9    7    6    9    3    8   16    6   16    3 |    34   31   31   30   27   29   34   32   28   31    30
   6  |   11    8    8   11   11    3    9   11    7   12    3 |    24   26   24   28   21   23   26   23   23   30    24
   7  |    8    9    6   13   18    4    9   22   10   15    4 |    44   46   42   47   40   43   46   44   44   42    43
   8E |    8   15   13   14   17    4   11    9   11   18    4 |    25   26   24   27   36   23   26   25   24   26    24
   9  |    9   11   12    9   12    4    8   14    6    9    3 |    26   28   26   26   30   25   29   27   24   28    25
  10  |    8    9    5    6    8    5    8   13    8   10    3 |    24   31   26   24   22   23   32   25   26   29    25
  11  |   12   12   10    9   13    4    8   10    9   10    3 |    27   27   25   26   25   25   27   23   24   27    23
  12  |   10   13    6   11    8    3    7   22    5   23    4 |    27   30   25   26   27   27   30   30   28   31    27
  13  |   10    9    6    6   11    5    6   14    7   16    3 |    29   29   25   27   27   25   29   25   26   22    25
  14  |    6    9    6    8   11    4    9   16    6   17    3 |    22   23   23   22   20   21   20   26   21   24    20
  15  |   11    9    5    8   10    3    5   17    8   21    3 |    35   38   33   32   34   33   34   29   35   28    32
  16  |    9   18    4    9   10    5    7   18    5   21    4 |    22   23   21   25   20   21   23   23   21   22    20
  17E |    8    9   10    6   15    3    8   17    6   13    3 |    23   25   25   24   25   24   23   29   28   29    23
  18  |   12   16   10    7    9    4    9   18   11   16    4 |    23   24   22   24   20   24   22   25   21   26    20
  19E |   11   11   11   12   12    5    7   20    9   17    4 |    47   43   39   42   43   40   40   42   47   41    42
  20  |    9    8    8   10    7    5    5   18    6   21    3 |    25   23   22   17   21   19   22   27   22   30    21
  21  |   14    9    9    8   13    5    9   39    7   21    5 |    18   20   15   20   17   16   20   34   16   21    13
  22  |    7    8    8    5   11    4    7   12    7   17    3 |    19   20   18   19   15   16   19   17   22   15    16
  23  |   11   27    5   11   16    5    7   22   10   16    4 |    32   30   29   31   31   28   30   25   26   30    27
  24  |    9   24   13   21   12    9   10   14    7   12    5 |   549  547  553  556  558  553  551  551  553  552   551
  25  |   14   12    9    6    8    5    6   15    6    9    3 |    22   21   22   21   17   17   22   18   18   16    18
  26  |    9   10    6    8    7    5    7    8    6   12    3 |    28   32   29   32   28   28   33   27   30   32    30
  27E |    9   12   18   12   13    4   13   13   11   14    4 |    21   24   25   24   30   22   25   23   23   18    22
  28  |    9   11    7    8   11    3    7   35    7   13    4 |    24   28   25   24   23   22   26   26   24   18    22
  29E |   13   15    6   12   14    4    9   18    9   14    4 |    48   47   45   47   49   46   48   43   46   42    46
  30  |    7    9   14   11   14    5    9   14    6   11    3 |   710 9999  712  712 9999  711  713  712  714  710   712
  31  |   12   13    6   13   11    4    8   13    8   13    3 |    30   34   30   35   31   31   33   29   34   30    31
  32  |    7   12   12    6    7    3    9   12    7    9    3 |    38   44   40   41   41   42   44   43   46   43    42
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |   10   13    9   10   12    4    8   18    8   15      |T   65   46   66   66   44   68   67   66   66   66    66
 WRMS |   10   13    8    9   12    4    8   16    7   15      |NE  71   49   72   73   46   75   74   73   72   73    72
 MEDI |    9   10    7    8   11    4    8   15    7   14      |MD  25   28   25   26   25   24   29   26   24   29    24

Table 3.2076.6   GPS week: 2076   Day: 6   MJD: 58782.000                            

        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   14    7   11    4    8   10    8   21    3 |    24   30   32   24   26   26   28   26   29   33    26
   2  |   15   13    6    7   11    5    9   17    8   20    4 |    29   25   26   30   30   27   26   33   28   33    26
   3  |    9    9    6    6    8    2    8   10   11   10    3 |    25   33   25   27   26   26   33   26   28   32    27
  X4  |  220  ---    2  ---  ---  220  ---  ---  ---  ---    0 |    44  ---   87  ---  ---   65  ---  ---  ---  ---   111
   5  |   10    9    7    6    6    4    8   14    8   13    3 |    48   43   45   45   43   43   46   38   46   40    43
   6  |   10    8    8    9    8    3   10    9    7   12    3 |    35   35   35   35   34   34   34   32   34   40    33
   7  |    8   16    7   14   13    5    7   19    8   16    4 |    43   46   40   46   42   41   45   41   44   40    42
   8E |    8   13   14   17   15    4   10    9    9   17    4 |    34   32   32   35   41   34   34   34   35   40    33
   9  |    8   10   14   12   13    4    9   14    7    6    3 |    45   43   43   44   44   43   43   44   45   44    43
  10  |    9    8    4    9    8    5    9   14    6    9    3 |    26   36   30   30   32   28   35   34   31   36    30
  11  |    8    8   13    7   13    6    9   14   11   21    4 |    28   26   27   28   25   26   29   23   28   31    25
  12  |   12   14    5    9   10    3    7   21    7   21    4 |    30   32   29   31   31   31   35   33   32   37    31
  13  |   11   10    5    8    9    5    9   15    8   17    3 |    38   41   39   37   44   37   43   38   42   38    39
  14  |    6    9    7   14    9    3    6   17    6   16    3 |    35   35   33   36   32   33   34   39   34   37    33
  15  |   11    9    7   13    9    4    5   17    8   21    4 |    39   42   39   38   42   37   39   34   42   34    38
  16  |    9   17    5   13   12    5    8   17    6   21    4 |    29   24   24   30   27   25   26   27   23   27    24
  17E |    9   10    8   12   18    3   10   15    8   11    4 |    18   19   21   27   20   20   20   26   24   25    19
  18  |    8   10   13   11   11    8    7   14   11   20    4 |    20   25   27   27   22   24   23   23   27   31    23
  19E |   10   12   10   11   12    4    7   17   10   12    4 |    48   43   40   46   46   42   42   41   44   37    42
  20  |    9    8    8    8    5    5    6   20    4   18    3 |    21   25   25   23   29   24   23   33   26   34    24
  21  |    8    9    8    8   10    6    9   39   10   19    4 |    18   24   19   24   27   20   23   40   22   28    19
  22  |    8    7    9    6    7    3    5   12   11   18    3 |    21   23   19   21   21   21   23   20   22   24    20
  23  |   10   26    7   15   16    7    7   24   10   18    5 |    47   45   43   47   47   43   42   43   45   45    43
  24  |    8   17   12   19   11    4   11   17    7   12    4 |   564  565  566  566  558  565  565  565  564  562   565
  25  |    9   12   11    9    8    4    6   16    7    9    3 |    24   27   30   27   25   26   27   26   23   24    24
  26  |    8    9    8   11    8    5    7    8    6   14    3 |    37   37   36   38   35   35   38   35   34   41    35
  27E |    9   10   14    9   12    5   12   11    9   13    4 |    32   30   29   27   32   29   31   29   32   29    29
  28  |    8    8    7    9   11    4    7   35    6   15    4 |    24   28   26   27   26   24   29   23   25   22    23
  29E |   13   15    9   25   15    4    9   18    9   15    5 |    58   57   58   60   56   56   59   58   57   55    57
  30  |    9   11   11   19   14    5    9   14    9    9    4 |   862  679  864  865  682  865  865  865  866  863   864
  31  |   10   13    8    9   11    6    9    8   10    9    3 |    26   34   27   32   29   29   33   30   32   30    29
  32  |    8   14   12   10    7    4    8   12    8   10    3 |    52   59   52   53   53   53   56   54   57   57    54
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |    9   12    9   12   11    5    8   17    8   16      |T   75   72   77   78   71   76   78   77   78   79    77
 WRMS |    9   12    9   12   10    5    8   15    7   14      |NE  82   79   84   85   78   83   86   85   85   87    84
 MEDI |    9   10    8    9   11    4    8   15    8   15      |MD  32   34   32   32   32   31   34   34   32   36    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 4.2076   GPS week: 2076   MJD: 58776.0-58782.0

CENT| CLK EPO  |        BRUX       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3043 |U    7     9    21 |U    0     0     0 |U   10    10    19 |
emr | emr 2962 |U   22    24    41 |U    0     0     0 |U   14    18    43 |
esa | esa 3030 |    12    15    30 |U    0     0     0 |    14    11    30 |
gfz | gfz 2975 |U    9     9    21 |U    0     0     0 |U   11    12    19 |
grg | grg 2961 |U   14    16    29 |U    0     0     0 |    13    15    21 |
igr | igr 2974 |     8    10    22 |     0     0     0 |    10    12    21 |
igs | igs 2994 |     9    10    22 |     0     0     0 |    10    11    22 |
jpl | jpl 2976 |U   17    18    38 |U    0     0     0 |U   14    14    39 |
mit | mit 2976 |    15    14    40 |U    0     0     0 |U   15    16    33 |



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 5.2076.0   GPS week: 2076   Day: 0   MJD: 58776.0

CENT| CLK EPO  |        BRUX       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 2976 |     6    15    19 |  ----  ----  ---- |    10    15    16 |
emr | emr 2976 |    15    24    31 |  ----  ----  ---- |     9    13    39 |
esa | esa 2976 |     8    15    21 |  ----  ----  ---- |    10    10    23 |
gfz | gfz 2976 |     7    12    18 |  ----  ----  ---- |    11    14    18 |
grg | grg 2975 |     8    17    20 |  ----  ----  ---- |    13    17    20 |
igr | igr 2937 |     7    14    18 |  ----  ----  ---- |    11    14    19 |
igs | igs 2974 |     7    15    17 |  ----  ----  ---- |    10    12    18 |
jpl | jpl 2976 |    10    20    26 |  ----  ----  ---- |    13    14    30 |
mit | mit 2976 |    15    18    60 |  ----  ----  ---- |    13    18    25 |

Table 5.2076.1   GPS week: 2076   Day: 1   MJD: 58777.0

CENT| CLK EPO  |        BRUX       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 2976 |     8     9    19 |  ----  ----  ---- |    12    10    19 |
emr | emr 2976 |    17    21    36 |  ----  ----  ---- |    14    12    34 |
esa | esa 2976 |    11    10    25 |  ----  ----  ---- |    11     6    24 |
gfz | gfz 2976 |    10     9    21 |  ----  ----  ---- |    11     9    18 |
grg | grg 2976 |     9     8    20 |  ----  ----  ---- |    13    11    20 |
igr | igr 2937 |     9     9    20 |  ----  ----  ---- |    11     8    19 |
igs | igs 2976 |     9    10    22 |  ----  ----  ---- |    10     7    19 |
jpl | jpl 2976 |    12    15    33 |  ----  ----  ---- |    13     8    34 |
mit | mit 2976 |    11    10    27 |  ----  ----  ---- |    12    14    28 |

Table 5.2076.2   GPS week: 2076   Day: 2   MJD: 58778.0

CENT| CLK EPO  |        BRUX       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3071 |     6     8    22 |  ----  ----  ---- |     9     8    18 |
emr | emr 2975 |    15    18    30 |  ----  ----  ---- |    10    20    42 |
esa | esa 2976 |     9     8    23 |  ----  ----  ---- |     9    10    23 |
gfz | gfz 2975 |     7     6    21 |  ----  ----  ---- |     9    10    19 |
grg | grg 2975 |    18    21    30 |  ----  ----  ---- |    10    10    18 |
igr | igr 2975 |     7     7    22 |  ----  ----  ---- |     8    10    17 |
igs | igs 2975 |     7     8    21 |  ----  ----  ---- |     8    10    20 |
jpl | jpl 2976 |    11    13    30 |  ----  ----  ---- |    10    15    35 |
mit | mit 2976 |    10     9    25 |  ----  ----  ---- |     9    12    27 |

Table 5.2076.3   GPS week: 2076   Day: 3   MJD: 58779.0

CENT| CLK EPO  |        BRUX       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3072 |     8     8    21 |  ----  ----  ---- |    13     9    19 |
emr | emr 2976 |    14    19    32 |  ----  ----  ---- |    15    18    38 |
esa | esa 3072 |    12    15    29 |  ----  ----  ---- |    16    11    30 |
gfz | gfz 2976 |    12    12    29 |  ----  ----  ---- |    14    12    18 |
grg | grg 2973 |    11     8    20 |  ----  ----  ---- |    14    13    21 |
igr | igr 2975 |    10     9    21 |  ----  ----  ---- |    13    11    19 |
igs | igs 3005 |    10     9    21 |  ----  ----  ---- |    13    10    20 |
jpl | jpl 2976 |    13    16    31 |  ----  ----  ---- |    16    10    34 |
mit | mit 2976 |    17    11    37 |  ----  ----  ---- |    13    14    25 |

Table 5.2076.4   GPS week: 2076   Day: 4   MJD: 58780.0

CENT| CLK EPO  |        BRUX       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3070 |     8     8    21 |  ----  ----  ---- |    10    12    17 |
emr | emr 2879 |    62    50    70 |  ----  ----  ---- |    17    22    53 |
esa | esa 3072 |    19    21    43 |  ----  ----  ---- |    17    16    34 |
gfz | gfz 2975 |     9     7    20 |  ----  ----  ---- |    10    14    17 |
grg | grg 2878 |    22    20    47 |  ----  ----  ---- |    13    15    19 |
igr | igr 3023 |    11     9    25 |  ----  ----  ---- |     9    11    19 |
igs | igs 3018 |    17    12    29 |  ----  ----  ---- |    10    12    20 |
jpl | jpl 2976 |    50    36    72 |  ----  ----  ---- |    19    22    57 |
mit | mit 2976 |    30    20    72 |  ----  ----  ---- |    20    19    51 |

Table 5.2076.5   GPS week: 2076   Day: 5   MJD: 58781.0

CENT| CLK EPO  |        BRUX       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3069 |     7     7    21 |  ----  ----  ---- |     9    13    26 |
emr | emr 2976 |    16    21    40 |  ----  ----  ---- |    15    23    51 |
esa | esa 3072 |    12    15    31 |  ----  ----  ---- |    18    14    39 |
gfz | gfz 2975 |     8     8    18 |  ----  ----  ---- |    11    17    27 |
grg | grg 2974 |     8    10    23 |  ----  ----  ---- |    14    23    28 |
igr | igr 2963 |     8     9    21 |  ----  ----  ---- |    11    18    36 |
igs | igs 3003 |     8     9    22 |  ----  ----  ---- |    11    18    32 |
jpl | jpl 2976 |    11    13    34 |  ----  ----  ---- |    13    20    46 |
mit | mit 2976 |    13    16    31 |  ----  ----  ---- |    15    19    37 |

Table 5.2076.6   GPS week: 2076   Day: 6   MJD: 58782.0

CENT| CLK EPO  |        BRUX       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3072 |     8     9    22 |  ----  ----  ---- |     9     7    15 |
emr | emr 2976 |    16    19    48 |  ----  ----  ---- |    17    19    47 |
esa | esa 3072 |    13    21    37 |  ----  ----  ---- |    16    12    35 |
gfz | gfz 2976 |     9    11    21 |  ----  ----  ---- |    10    11    18 |
grg | grg 2976 |    21    27    44 |  ----  ----  ---- |    13    16    19 |
igr | igr 3012 |     8    11    25 |  ----  ----  ---- |    10    11    21 |
igs | igs 3008 |     8    10    26 |  ----  ----  ---- |    10    11    24 |
jpl | jpl 2976 |    11    14    39 |  ----  ----  ---- |    15    13    39 |
mit | mit 2976 |    13    13    27 |  ----  ----  ---- |    25    18    37 |


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 6.2076   GPS week: 2076   MJD: 58776.500-58782.500

                                                         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 |     -49     -11     -67    -205      4 |      19     22
            |      22      16      64      67      8 |       3
emr   uuuuu |      -4      21     156     117    -12 |      63     66
            |       8      21      52      75     11 |       5
esa   uuuuu |      24      20      -5      68      8 |      30     32
            |      18      11      76      67      3 |       2
gfz   uuuuu |      -1     -15     -30     -92      2 |      22     25
            |      18      19     156     148      6 |       2
grg   uuuuu |      29       3    -101      73     -3 |      -3     11
            |      23      15      33      44      4 |       2
igr   xxxxx |      27      24       9      65      3 |      -1     10
            |      12      15      30      29      4 |       1
irf   xxxxx |      16       1     -41      45      3 |      -4     10
            |       7       8      23      30      3 |       1
jpl   uuuuu |       0     -12      40      63     -1 |      49     51
            |      11      17      54      30      8 |       2
mit   uuuuu |      25      21     -64      64     -1 |      17     20
            |      19      16      47     101      5 |       2
ngs   uuuuu |      -8     -18      83       0      1 |      11     15
            |      28      39     178      95      5 |       3
sio   uuuux |       3      24     -79     -89      0 |      53     55
            |      26      32      68      49     13 |       5


Table 7.2076.0   GPS week: 2076   Day: 0   MJD: 58776.500

                                                         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 |     -47      -2    -153    -156     -4 |      24     28
emr   uuuuu |     -13      26     162     136    -29 |      73     75
esa   uuuuu |      -9      38      40      69      5 |      31     33
gfz   uuuuu |       6     -28      43     -59     -1 |      25     28
grg   uuuuu |      25       4     -49      55      3 |       0     12
igr   xxxxx |      46      38      19      94      2 |       2     11
irf   xxxxx |      27     -13       1      13      2 |      -2     11
jpl   uuuuu |       0      -5      94      93      0 |      53     54
mit   uuuuu |      28      13      -7     -58      1 |      21     24
ngs   uuuuu |       5     -26     -54     -18     -8 |      17     21
sio   uuuux |      49       0       6     -38    -10 |      62     66

Table 7.2076.1   GPS week: 2076   Day: 1   MJD: 58777.500

                                                         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 |     -90      15     -62    -193     -4 |      21     26
emr   uuuuu |       9       1      96     212    -23 |      67     70
esa   uuuuu |      19      26      26      74      9 |      29     31
gfz   uuuuu |       5     -15      25     -46      7 |      23     25
grg   uuuuu |      13       2     -69      63      0 |      -1     11
igr   xxxxx |      27      43      31      89      2 |       0     10
irf   xxxxx |       6       1     -29      27      5 |      -4     11
jpl   uuuuu |      10      11     -33      57     -1 |      50     51
mit   uuuuu |      17      35     -51      -1      1 |      19     21
ngs   uuuuu |      33     -67      95     -49     -4 |      13     19
sio   uuuux |     -16      42     -73     -92     -6 |      57     61

Table 7.2076.2   GPS week: 2076   Day: 2   MJD: 58778.500

                                                         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 |     -60      -2    -118    -160      4 |      18     20
emr   uuuuu |      -3      32     226     118     -5 |      65     67
esa   uuuuu |      21      24     -70      99      7 |      29     30
gfz   uuuuu |     -13       6     -63     -53      0 |      22     24
grg   uuuuu |      62      -4    -147      50     -3 |      -3      9
igr   xxxxx |      29      29      -7      48      2 |      -1      8
irf   xxxxx |      22       4     -68      43      6 |      -5      9
jpl   uuuuu |      -2     -19      16      95     12 |      50     51
mit   uuuuu |       1      28     -81      45      2 |      17     19
ngs   uuuuu |       8     -54     256     -94      2 |      11     13
sio   uuuux |      -7      47    -180    -146      1 |      53     54

Table 7.2076.3   GPS week: 2076   Day: 3   MJD: 58779.500

                                                         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 |     -54      -6     -43    -260     14 |      17     20
emr   uuuuu |       2      36     213      80    -10 |      63     66
esa   uuuuu |      25       8      34     139      4 |      29     30
gfz   uuuuu |      -4      15    -290      26     -4 |      21     24
grg   uuuuu |      52      14     -92     169     -8 |      -4     11
igr   xxxxx |      32      28     -48      99      0 |      -1      9
irf   xxxxx |       8       7     -38      46      5 |      -5     10
jpl   uuuuu |       5     -20      -8      36     -7 |      50     51
mit   uuuuu |      12      22     -32      30      2 |      16     19
ngs   uuuuu |      -4     -25     205     -46      4 |       9     13
sio   uuuux |     -20       6     -87    -149     -5 |      50     52

Table 7.2076.4   GPS week: 2076   Day: 4   MJD: 58780.500

                                                         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 |     -32     -30    -112    -298     -6 |      18     21
emr   uuuuu |     -12      50     155     128      4 |      61     64
esa   uuuuu |      31      17    -148     -56     14 |      30     31
gfz   uuuuu |      32     -20     -97      37     -5 |      20     23
grg   uuuuu |      11       7    -113      76     -6 |      -5     12
igr   xxxxx |      11      -3      15      34      9 |      -2      9
irf   xxxxx |      17      -9     -43     107      6 |      -5     10
jpl   uuuuu |     -21     -32      47      19     -3 |      49     50
mit   uuuuu |      21      -9     -33     261      2 |      16     18
ngs   uuuuu |     -12      35     262     -24      8 |       9     13
sio   uuuux |     -20     -22    -107     -17     28 |      48     50

Table 7.2076.5   GPS week: 2076   Day: 5   MJD: 58781.500

                                                         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 |     -28     -22       9    -114     12 |      17     20
emr   uuuuu |       0      11      90     -25     -5 |      59     62
esa   uuuuu |      33       6      15     129      6 |      32     33
gfz   uuuuu |      -6     -41     -55    -153     12 |      19     22
grg   uuuuu |      -1      22    -124      35     -7 |      -5     12
igr   xxxxx |      14      15       3      28     -1 |      -1      9
irf   xxxxx |      14       8     -52      35     -2 |      -4     10
jpl   uuuuu |      12     -26      47      53    -13 |      48     49
mit   uuuuu |      37      15    -102      74     -9 |      16     19
ngs   uuuuu |     -36      33      36      34      3 |       9     13
sio   uuuux |      24      22      10     -88     -5 |      50     53

Table 7.2076.6   GPS week: 2076   Day: 6   MJD: 58782.500

                                                         AC LOD  AC LOD
CENT  FLAG  |   Xpole   Ypole     Xrt     Yrt    LOD |    BIAS  BIAS RMS
            |   [uas]   [uas]   [uas/d] [uas/d]  [us]|    [us]    [us]
------------+----------------------------------------+------------------
cod   uuuuu |     -34     -27      12    -253     10 |      18     23
emr   uuuuu |      -8      -9     147     173    -12 |      57     58
esa   uuuuu |      51      23      69      23      7 |      33     35
gfz   uuuuu |     -25     -22     224    -395      6 |      21     26
grg   uuuuu |      43     -26    -110      63     -4 |      -5     12
igr   xxxxx |      34      18      47      63      7 |       0     10
irf   xxxxx |      16       7     -58      48     -2 |      -3     11
jpl   uuuuu |      -3       7     120      90      2 |      47     48
mit   uuuuu |      61      40    -143     100     -7 |      16     19
ngs   uuuuu |     -50     -19    -221     196      3 |      10     15
sio   uuuux |      13      73    -119     -94     -5 |      49     51


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