[IGSREPORT-26164] Wk 2019 IGS Final Orbits

acc acc at igs.org
Sun Oct 7 04:24:07 PDT 2018


Author:  AC Coordinator / GA MIT 

sum-file Version 2.0
Final IGS Orbit Combination - Week 2019   (Sep 16, 2018 - Sep 22, 2018)

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:

igs2019[0-6].sp3  IGS GPS ephemeris files in SP3 format.
igs2019[0-6].clk  IGS GPS satellite and station clocks in clock RINEX format.
igs2019[0-6].cls  IGS GPS clock combination summary report.
igs20197.erp      Earth Rotation Parameters (ERP) and their rates as well as
                  Universal Time (UT1-UTC) and Length Of Day (LOD) associated 
                  with IGS ephemerides.
igs20197.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   | GLSV TIXI GLSV MGUE TIXI
                0  |  EMR   | BJNM BJNM GRAZ
                0  |  ESA   | 19 20 21 22 22 ANKR ASPA AUCK BRAZ CEDU CHUM CORD
                0  |  ESA   | GLSV GRAS GRAZ GUAT GUUG INEG KOKV KOUC LAUT LHAZ
                0  |  ESA   | MAG0 NAUR NIUM NYA1 OHI2 RIOP SOFI THTI THU2 USN7
                0  |  ESA   | WIND WTZR LHAZ
                0  |  GFZ   | 18 18 GODE GRAZ POHN FAA1 GODE POHN
                0  |  GRG   | 13 ADIS ADIS DAV1 GLSV
                0  |  JPL   | LAUT
                0  |  MIT   | BAKE BRST CHPI DUBO FALK HARB IISC TONG BAKE BRST
                0  |  MIT   | CHPI DUBO FALK HARB IISC TONG
                1  |  COD   | MAG0 MGUE GLSV KRGG MAG0 MGUE
                1  |  EMR   | YAR2 BJNM
                1  |  ESA   | 18 22 18 22 FAA1 NICO WIND FAA1 MAW1 NICO WIND
                1  |  GFZ   | 18 18 BJNM FAA1 GODE HERS KRGG MAL2 NICO POHN BJNM
                1  |  GFZ   | FAA1 GODE HERS MAL2 NICO POHN
                1  |  GRG   | 13 13 GLSV FAA1 GLSV MANA RABT
                1  |  JPL   | LAUT RABT
                1  |  MIT   | BAKE CEDU CHPI CHUR DARW DRAO GRAZ HERS IISC MAW1
                1  |  MIT   | NRC1 PADO STR1 SUTH TONG WHIT BAKE CEDU CHPI CHUR
                1  |  MIT   | DARW DRAO GRAZ HERS IISC MAW1 NRC1 PADO STR1 SUTH
                1  |  MIT   | TONG WHIT
                2  |  COD   | MGUE TIXI MAG0 MGUE TIXI
                2  |  EMR   | YELL
                2  |  ESA   | MAL2 NICO
                2  |  GFZ   | 18 18 BRAZ FAA1 HERS HOFN POHN PRDS BRAZ HERS POHN
                2  |  GRG   | 13 29 13 29 ADIS FAA1 GLSV HOFN LPGS MAL2 WIND ADIS
                2  |  GRG   | FAA1 GLSV HOFN LPGS MAL2 STJO WIND
                2  |  JPL   | FAA1 LAUT
                2  |  MIT   | BAKE BJNM BRST CHUR DUBO GRAZ IISC NRC1 PADO SUTH
                2  |  MIT   | TONG WHIT BAKE BJNM BRST CHUR DUBO GRAZ IISC NRC1
                2  |  MIT   | PADO SUTH TONG WHIT
                3  |  COD   | ANKR MAL2 TIXI ANKR FAA1 HOB2 NAUR PDEL TIXI
                3  |  EMR   | HOB2
                3  |  ESA   | 22 SCUB
                3  |  GFZ   | 18 18 COCO FAA1 FLRS
                3  |  GRG   | 13 13 COCO DAV1 GLSV WIND COCO DAV1 GLSV KIRU WIND
                3  |  JPL   | INVK INVK LAUT
                3  |  MIT   | BAKE CHPI CHUR DARW DRAO FLIN GRAZ HERS SUTH TONG
                3  |  MIT   | WAB2 WHIT BAKE CHPI CHUR DARW DRAO FLIN GRAZ HERS
                3  |  MIT   | SUTH TONG WAB2 WHIT
                4  |  COD   | TIXI WIND GLSV NAUR TIXI WIND
                4  |  EMR   | 18 18
                4  |  ESA   | 19 20 21 22 22 ABPO ADIS ALIC ANKR ASPA AUCK BJCO
                4  |  ESA   | BOGT BRAZ CEDU CHPI CHUR CORD CRO1 DARW DRAO FAA1
                4  |  ESA   | GLSV GRAS GRAZ GUAT GUUG HARB HOB2 IISC INEG KERG
                4  |  ESA   | KOKV KOUC KOUR LAUT LHAZ MAG0 MAL2 MATE MDVJ MKEA
                4  |  ESA   | NAUR NIUM NOVM NRIL NYA1 OHI2 ONSA PBRI PIE1 PIMO
                4  |  ESA   | PTBB RIOP SFER SOFI STHL THTI THU2 TLSE TWTF USN7
                4  |  ESA   | WHIT WTZR YAKT YSSK ZAMB ZECK
                4  |  GFZ   | 18 18 BJNM MAL2 PDEL BJNM
                4  |  GRG   | 5 5 FAA1 FAA1 PDEL PIE1
                4  |  JPL   | LAUT
                4  |  MIT   | BAKE CHUR FLIN HLFX IISC SCH2 BAKE CHUR FLIN HLFX
                4  |  MIT   | IISC SCH2
                5  |  COD   | TIXI NAUR TIXI
                5  |  EMR   | GRAZ KOKB
                5  |  ESA   | KOKV LHAZ
                5  |  GFZ   | 18 18 KOKV GODE PIMO
                5  |  GRG   | 13 ADIS GLSV ADIS GLSV
                5  |  JPL   | KOKB KOKB LAUT
                5  |  MIT   | BAKE CHUR HLFX BAKE BJNM CHUR HLFX KOKB
                6  |  COD   | MAC1 NAUR YAKT NAUR YAKT
                6  |  EMR   | CHUR FAIR
                6  |  ESA   | 19 20 21 22 22 ABPO ALIC ASPA AUCK BAKE BRAZ CEDU
                6  |  ESA   | CHPI CHUM CHUR COCO CORD FAIR FLIN GLPS GRAS GRAZ
                6  |  ESA   | GUAT GUUG HARB HOB2 IISC INEG IRKJ KOKV KOUC KOUR
                6  |  ESA   | LAUT LHAZ LPGS MAG0 MATE MAW1 MDVJ MKEA NICO NOVM
                6  |  ESA   | NRIL NYA1 OHI2 PBRI PIE1 PIMO PTBB REUN RIOP SCH2
                6  |  ESA   | SFER SOFI STHL THTI THU2 TOW2 TRO1 TWTF USN7 WHIT
                6  |  ESA   | WIND WTZR YAKT ZAMB ZECK LHAZ REUN WIND
                6  |  GFZ   | 18 18 FAIR FLRS GLSV LHAZ PDEL FLRS KOKB LHAZ PDEL
                6  |  GFZ   | SCH2
                6  |  GRG   | 13 13 GLSV PDEL GLSV MAC1 PDEL STJO
                6  |  JPL   | KOKB SCH2 CHUR FAIR LAUT SCH2
                6  |  MIT   | BAKE CHUR BAKE CHUR HLFX IISC SCOR

    
 5. New clock offsets and drifts were estimated for centres showing reference
    clock resets. Note that only the largest clock offset and drift are output
    to the summary file. However, the clock combination and the listed RMS
    include all the clock segments. In summary, the following clock
    shifts/resets were noticed and accounted for:
    
               Day | Centre |  Time  |  Jump
               ----+--------+--------+-------------
                2  |  ESA   | ~23:40 | ~ 0.10 ns

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

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

 8. Velocity changes were estimated to alleviate the effects of modeling problems,
    experienced by all centres,in the Long Arc (LA) process.
    
             Velocity changes per day and affected satellites:
    
               Day |  0 |  1 |  2 |  3 |  4 |  5 |  6 |
           --------+----+----+----+----+----+----+----+
           PRN G08 |  4 |  4 |  4 |  4 |  4 |  4 |  4 |
           PRN G09 |  4 |  4 |  4 |  4 |  4 |  4 |  4 |

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

10. Small rotations were applied to all the AC orbit and ERP values in order to
    align them to the current IGS reference frame. These RX, RY and RZ rotations
    were estimated in the IGS SINEX combination process, performed by the IGS
    Reference Frame Coordinator at the Institut Geographique National (IGN).
    Starting on 19-Aug-2012 (GPS Week 1702; MJD=56158), ACs began contributing
    products based on 1d SINEX integrations. As a result, the SINEX combinations
    are now done daily instead of weekly, and the associated daily rotations are
    applied here to the orbits and ERPs. The estimated 7 transformations, from
    which only the 3 rotations are applied to the orbit and ERP values, are:
    
            |     |    DX     DY     DZ      RX     RY     RZ     SCL
     Centre | Day |   [mm]   [mm]   [mm]   [uas]  [uas]  [uas]   [ppb]
     -------+-----+---------------------------------------------------
       COD  |   0 |     .3    -.2    1.5      12     26     -6    -.56
       EMR  |   0 |   -2.5    1.2    9.8     -29     24     17    -.16
       ESA  |   0 |    -.3     .2    1.0      -6    -19     22    -.41
       GFZ  |   0 |     .0     .5     .7      -4    -26      5    -.45
       GRG  |   0 |    2.3    6.7   24.5      26     10     30    -.13
       JPL  |   0 |    2.6    1.5    5.9      30    -12     -7    -.35
       MIT  |   0 |   -2.3   -2.7   14.2     -12     13     26    -.07
       NGS  |   0 |    -.3    1.0    9.1      15    -69      3    -.28
       SIO  |   0 |    -.6    3.5    9.3      17    -11     -6    -.19

       COD  |   1 |     .3     .2    1.1      16     18    -10    -.53
       EMR  |   1 |   -1.1    4.2    7.0      -5     54    -31    -.26
       ESA  |   1 |     .1    -.2    1.3      -2      6      5    -.34
       GFZ  |   1 |     .8     .2     .8     -13    -40      5    -.43
       GRG  |   1 |    3.3    4.6   12.1      58     28     15    -.13
       JPL  |   1 |    2.4   -3.7   -4.5       1     -4     14    -.48
       MIT  |   1 |   -1.4   -3.0    9.5      -6     12     12    -.18
       NGS  |   1 |    2.3   -2.2    5.4      -3    -25    -13    -.25
       SIO  |   1 |    -.6     .6    3.3      24     -4     -1    -.20

       COD  |   2 |     .3     .4    1.1      21     10     -6    -.65
       EMR  |   2 |   -1.5     .4    5.9     -14     45    -24    -.14
       ESA  |   2 |    -.6    -.1    1.1      13    -17     23    -.59
       GFZ  |   2 |     .5     .3     .4      -9    -44      8    -.35
       GRG  |   2 |    1.7    1.1    9.9      50     16     23     .0 
       JPL  |   2 |    1.5    -.4   -1.0       5    -10      5    -.15
       MIT  |   2 |   -1.4    1.3   15.8     -20     25     21    -.27
       NGS  |   2 |  -11.2    -.2     .9      19     13      2    -.24
       SIO  |   2 |   -3.1    2.6   12.5       8    -12      2    -.22

       COD  |   3 |     .5    -.1    1.2      20     18      5    -.45
       EMR  |   3 |     .7    3.5    7.2     -19     59    -11    -.16
       ESA  |   3 |    -.1    -.1     .6       6    -15     26    -.41
       GFZ  |   3 |     .5     .2     .6      -8    -42      0    -.46
       GRG  |   3 |    3.5    1.2   11.9      45     20     21    -.15
       JPL  |   3 |    3.2    4.6    -.1       0     -1      1    -.51
       MIT  |   3 |   -3.3    1.3   13.0     -14     22     -3    -.08
       NGS  |   3 |  -10.1     .1    8.0       8     -6     -2    -.29
       SIO  |   3 |  -10.3    8.4    4.6       1     12     -4    -.19

       COD  |   4 |     .6    -.1    1.7      13     20      0    -.65
       EMR  |   4 |    1.9    7.7    5.5     -14     46    -32    -.45
       ESA  |   4 |    -.3    -.0     .7       7    -11     27    -.57
       GFZ  |   4 |     .4     .5     .8      -2    -36     -5    -.66
       GRG  |   4 |    4.4    1.4    7.9      34     14     22    -.20
       JPL  |   4 |    2.7    2.7   -4.7       5     -5     -2    -.50
       MIT  |   4 |   -1.0   -1.4    9.0     -22     26      5    -.25
       NGS  |   4 |  -10.6   -6.3     .1     -20      0    -38    -.31
       SIO  |   4 |   -4.3    1.1    6.5       3     21      1    -.31

       COD  |   5 |     .6    -.1    1.5      11     13      8    -.67
       EMR  |   5 |   -4.3    5.0    3.6     -12     62    -18    -.27
       ESA  |   5 |    -.2     .3     .8       8      2     18    -.64
       GFZ  |   5 |     .3     .5     .8       0    -29    -11    -.70
       GRG  |   5 |    3.7    1.2    -.2      38     32     16    -.02
       JPL  |   5 |    5.6   -1.5   -6.5       2      9     -4    -.54
       MIT  |   5 |   -2.4   -1.0   11.1      -8     19     -5    -.29
       NGS  |   5 |   -7.4   -4.0   -7.1      10     33    -22    -.52
       SIO  |   5 |   -5.5    -.0    1.5      10     -2      4    -.36

       COD  |   6 |     .4     .1    1.6      13     12     -1    -.58
       EMR  |   6 |   -3.2    8.0   10.1       7     67    -28    -.39
       ESA  |   6 |    -.3    -.5    1.4      27     -8     -4    -.51
       GFZ  |   6 |     .7    -.2    1.2      -6    -37      0    -.56
       GRG  |   6 |    5.7    4.6    8.9      49     16     18    -.23
       JPL  |   6 |   -6.6    2.6   -6.7       5     15      4    -.25
       MIT  |   6 |    -.3    -.2   11.9      -4     33      4    -.35
       NGS  |   6 |   -9.9    1.0    -.3      29      3    -17    -.44
       SIO  |   6 |   -6.0    3.3    4.2      28      5      3    -.44


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

12. Starting 5-Nov-2006 (GPS Week 1400, day 0, MJD 54044) until 16-Apr-2011 (GPS
    Week 1631, day 6, MJD 55667) the absolute antenna model is introduced (IGSMAIL
    #5438). The antenna phase center offsets and phase center variations are given
    in the file:
        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 1.2019.a). It also displays the computed satellite
position sigmas for the combined orbits (Table 1.2019.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 2.2019.[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 3.2019.[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 5.2019.0-6). 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 2019 summary.                       (Sep 16, 2018 - Sep 22, 2018)

Table 1.2019.a   GPS week: 2019   MJD: 58377.000-58383.000

         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  259|    1     1    -1    -4    -7     9  -.03   10   10 |    -755     307      7     91
        |    0     0     1    25    14    12   .02           |      78     108
emr   80|    0     0     1    -6    39    29   .16   13   13 |  139799    -147     14     98
        |    1     1     0     9    13     9   .02           |     478     833
esa  150|    0     0    -1    -5    -1   -11  -.07    9    9 |   -2036     815      7    202
        |    1     0     1     8    10    10   .01           |     832    1092
gfz  180|    0    -1    -2   -13   -12   -20   .00   12   11 |    -304      88     12    104
        |    0     0     0    22    12    16   .03           |     433     624
grg  103|    1     0     3    -8     3     3  -.15   12   13 |     -73      37      9    144
        |    0     0     4     5     8    26   .02           |      96     288
igr  n/a|    0     0    -2    -8   -14    -6  -.08    4    4 |   -2464    -286     11     75
        |    0     0     1     6     6     9   .01           |     888     921
jpl   80|    0     0     0    20     7    24   .23    8    8 |  213029     -78      8    105
        |    1     0     1    12    17    16   .01           |     283     667
mit  348|    1    -1     4   -10   -17    -5  -.06   13   12 |    -594      -4     58    761
        |    1     0     1    19    24    13   .02           |     450     333
ngs  194|   -1     0     0     8   -15   -12  -.08   10    8 |    -762     311    976   2185
        |    0     0     3    19    23     9   .01           |      67     154
sio  330|    0    -1     0     6     8   -25  -.10   13   13 |     ---     ---    ---    ---
        |    0     0     3    11    33    29   .04           |     ---     ---


Table 1.2019.b   GPS week : 2019   MJD: 58377.000-58383.000   

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

              Day of GPS week
 PRN  |    0    1    2    3    4    5    6 |  Remarks
------+------------------------------------+------------------------------------------
   1  |    3    3    3    3    3    3    3 |
   2  |    5    5    5    5    5    5    5 |
   3  |    3    3    3    4    3    3    3 |
   4  |    0    0    0    0    0    0    0 |
   5  |    4    4    4    4    4    4    4 |
   6  |    3    3    3    3    3    3    3 |
   7  |    4    4    4    5    4    4    4 |
   8  |    4    4    3   11    4    4    3 |
   9  |    4    4    3   14    4    4    4 |
  10  |    3    3    3    3    3    3    3 |
  11  |    4    4    4    4    4    4    4 |
  12  |    5    5    5    5    5    5    5 |
  13  |    4    4    4    4    4    4    4 |
  14  |    4    4    4    4    4    4    4 |
  15  |    5    4    4    4    4    5    4 |
  16  |    5    5    5    5    5    5    5 |
  17  |    4    4    4    4    4    4    4 |
  18  |    4    4    3    3    4    4    3 |
  19  |    5    4    4    4    5    5    5 |
  20  |    5    4    4    4    4    4    4 |
  21  |    4    4    4    4    4    4    4 |
  22  |    4    4    4    5    4    5    4 |
  23  |    5    5    5    5    5    5    5 |
  24  |    3    3    3    3    4    4    4 |
  25  |    4    3    3    3    3    4    3 |
  26  |    4    3    3    3    3    3    3 |
  27  |    4    4    3    4    4    4    4 |
  28  |    5    4    4    4    4    4    4 |
  29  |    5    5    4    5    4    4    4 |
  30  |    3    3    3    3    3    3    3 |
  31  |    4    4    4    4    4    4    4 |
  32  |    3    3    3    3    3    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 2.2019.0   GPS week: 2019   Day: 0   MJD: 58377.000                            

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|    0     1    -3    13     1    -9  -.01   11   11 |    -765     404      7     90
emr   80|   -2    -2     0   -16    36    23   .14   13   13 |  140431    -914     13     78
esa  150|    0     0    -2   -20    -9    -3  -.08    9    9 |   -2153    2069      8    197
gfz  176|   -1     0    -2   -24   -26   -17  -.02   12   11 |    -556     444     12    100
grg  105|    1     1    11   -14     7   -21  -.17   13   13 |       8     225     10    140
igr  n/a|    0     0    -4   -16   -15     4  -.09    4    4 |    -969   -1250     13     79
jpl   80|    0     0    -1    40   -29    31   .22    8    8 |  213207    -548      7     83
mit  349|    0    -2     2   -23    13     4  -.09   13   12 |     -39    -442     60    605
ngs  196|    0     1     2    17     5   -13  -.07   10    8 |    -799     454   1023   2439
sio  337|    0    -1    -3    13    41   -22  -.07   14   14 |     ---     ---    ---    ---

Table 2.2019.1   GPS week: 2019   Day: 1   MJD: 58378.000                            

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  262|    2     0     0   -14    -8    19  -.02   11   11 |    -761     283      6     90
emr   80|   -1     2     1   -11    26    34   .16   13   13 |  139887    -499     14     86
esa  150|    1     0    -4    -4     7    -8  -.06    8    8 |   -2906    1303      8    205
gfz  181|    0    -1    -2   -30     0    -9  -.05   12   12 |     230    -663     12    104
grg  107|    1     0     3     0    11   -30  -.14   11   12 |     -30    -116      9    120
igr  n/a|    0     0    -2    -9   -27     0  -.09    4    4 |   -1858    -848     11     77
jpl   80|   -1     0    -2     1    10    29   .22    8    8 |  212936    -234      8     99
mit  349|    0    -2     3    -8   -41    -8  -.04   12   11 |    -995     221     51    488
ngs  195|   -1     0     2    32   -12   -16  -.09    9    8 |    -647      27    785   1671
sio  336|    0    -2     2    13   -10   -26  -.14   14   13 |     ---     ---    ---    ---

Table 2.2019.2   GPS week: 2019   Day: 2   MJD: 58379.000                            

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  262|    0     1    -1     7     0    -6  -.02    9    9 |    -732     275      7     87
emr   80|   -1    -2     2    -1    40    18   .17   12   12 |  139627      96     13     95
esa  150|    0     0    -1    -3     1    -4  -.07    8    9 |   -2289    -499      8    212
gfz  184|    0     0     0    17    -3   -34   .03   11   11 |    -758     755     11     92
grg  104|    1     0     3    -2     0   -14  -.13   11   11 |    -232      37      8    120
igr  n/a|    0     0    -1    -5    -7    -5  -.09    4    4 |   -2468    -282     11     83
jpl   80|    0     0     0     7     7    43   .24    8    8 |  213053    -158      7    102
mit  349|    0     0     5   -23   -10     0  -.03   12   12 |    -417    -120     51    507
ngs  201|   -1     0     0     5   -19   -16  -.10    9    7 |    -773     331    906   2174
sio  339|    0     0    -3   -15    -5    -6  -.11   13   12 |     ---     ---    ---    ---

Table 2.2019.3   GPS week: 2019   Day: 3   MJD: 58380.000                            

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  264|    1     1    -1   -52   -27    18  -.07   12   12 |    -658     322      8     98
emr   80|    1    -1     0   -12    51    16   .20   13   13 |  139948     521     17    104
esa  150|   -2     0    -2   -14   -18    -2  -.08    9    9 |   -1714    1303     10    225
gfz  183|   -1    -2    -2    12   -22   -35   .00   12   12 |     187     194     13    104
grg  102|    2     0     6   -13     1     0  -.14   12   12 |      46     449     10    146
igr  n/a|    0     0    -3    -9   -13   -18  -.08    4    4 |   -2527      61     11     71
jpl   80|    2     1    -1    21    12    22   .25    9    9 |  213047     648      9    122
mit  348|    0    -1     3    18   -14   -10  -.05   12   11 |    -769     575     50    612
ngs  190|   -1     0     4    30     1   -10  -.07    9    8 |    -697     474   1164   2197
sio  338|   -1    -1    -4    13    12    -9  -.06   14   14 |     ---     ---    ---    ---

Table 2.2019.4   GPS week: 2019   Day: 4   MJD: 58381.000                            

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  261|    0     0    -1    26    16     9   .00   10   10 |    -913     485      7    101
emr   80|    0     0     1   -10    21    35   .15   13   13 |  139824   -1326     16    100
esa  150|    0    -1    -1    -5     3    -6  -.08    8    8 |   -2774     850      7    210
gfz  181|    0    -1    -2   -28    -3   -36   .04   12   12 |    -176    -799     12    101
grg  104|    0     0     3   -10    -4    33  -.17   13   13 |     -61    -480      9    173
igr  n/a|    0     0    -4     1    -9   -10  -.07    4    4 |   -3101   -1332     11     76
jpl   80|    0     1     0    28     5    20   .23    8    7 |  213067   -1093      7     99
mit  349|    0    -2     4    -9     6   -13  -.05   14   13 |    -902    -274     56   1024
ngs  196|   -2     0     0   -20   -63   -26  -.09   10    8 |    -770     206   1015   2343
sio  295|   -1     0     0     2    28   -19  -.15   13   12 |     ---     ---    ---    ---

Table 2.2019.5   GPS week: 2019   Day: 5   MJD: 58382.000                            

CENT STA|   DX    DY    DZ    RX    RY    RZ   SCL  RMS  WRMS|    TOFT   TDRFT   SDEV    RMS
        |  [mm]  [mm]  [mm] [uas] [uas] [uas] [ppb] [mm] [mm]|    [ps]  [ps/d]   [ps]   [ps]
--------+----------------------------------------------------+------------------------------
cod  258|    1     0     0   -14    -9    10  -.02   11   11 |    -718     182      7     97
emr   80|   -1     0     1    -1    58    34   .14   13   13 |  138866    1092     16    125
esa  150|    0     0     0     4    10   -27  -.06    8    9 |   -2017    1552      7    183
gfz  180|    0    -1    -2   -36    -3     9  -.00   12   11 |    -858     716     14    116
grg   96|    2     0    -4    -9    17    37  -.16   14   13 |    -160     104     10    162
igr  n/a|    0     0    -1    -4   -14   -15  -.07    4    4 |   -3773    1120     10     71
jpl   80|    0     1     0    22    26    -9   .22    8    8 |  212487     850     10    119
mit  349|    2    -1     5     9   -56   -26  -.07   13   13 |   -1058      29     56   1034
ngs  193|   -3     0    -3     0    -7    -4  -.07   10    9 |    -836     368   1057   2409
sio  332|    0     0     4    13   -49    -1  -.11   13   12 |     ---     ---    ---    ---

Table 2.2019.6   GPS week: 2019   Day: 6   MJD: 58383.000                            

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|    1     1     0     2   -21    22  -.04   10   10 |    -742     200      7     76
emr   80|   -1     0     2    10    38    41   .15   14   14 |  140014       0     15     98
esa  150|    0     0     0     3    -2   -25  -.09    8    8 |    -400    -871      7    187
gfz  178|    0    -2    -3    -3   -25   -22   .02   11   12 |    -200     -29     14    113
grg  104|    2     0     0    -5    -7    17  -.19   13   13 |     -82      40      8    149
igr  n/a|    0     0    -1   -15   -13     2  -.08    4    4 |   -2555     527     11     73
jpl   80|    0     0     0    22    18    30   .22    8    8 |  213412     -12      9    112
mit  349|    3    -2     4   -39   -19    13  -.06   13   13 |      20     -23     84   1059
ngs  193|   -2     1    -2    -6   -12     4  -.08   10   10 |    -812     319    888   2067
sio  337|    0    -1     3     2    43   -89  -.05   12   13 |     ---     ---    ---    ---

       
       
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 3.2019.0   GPS week: 2019   Day: 0   MJD: 58377.000                            

        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  |    6    9   10    8    9    3    6    7    9   11    3 |    16   23   21   15   17   15   24   16   17   22    18
   2  |   12   13    8   16   16    6    8   23   15   17    5 |    19   20   17   21   18   17   19   27   18   19    16
   3  |    7    7    6    7   12    4    7   10   10   11    3 |    33   34   32   33   37   31   33   31   32   36    32
  X4  |    2  ---  ---  ---  ---   22  ---  ---  ---  ---    0 |    41  ---  ---  ---  ---   34  ---  ---  ---  ---    40
   5  |    9   12    8   13   18    5    9   15   10   12    4 |    32   33   31   31   37   28   32   31   28   29    30
   6  |    6    8   10    8   11    3    7    9    7    8    3 |    24   29   26   24   23   23   30   24   24   25    25
   7  |   12   13   10   13    8    4    9   17   10   15    4 |    37   38   38   32   32   35   37   31   36   35    34
   8  |   11   18    5    6   17    3    9   10    8   10    3 |   647  644  644  645  310  645  646  644  644  642   644
   9  |   10   14    7    7   15    3    7   12    8    9    3 |   816  603  814  818  614  816  815  821  815  818   817
  10  |    9    9    5    6   14    2    8    7    5   11    3 |    32   35   29   29   35   29   32   31   31   34    31
  11  |    9   12   15    9   12    3    8    9    9   16    4 |    25   32   21   24   24   23   30   25   24   23    23
  12  |   13   24    6   17   11    4    9   15   11   17    5 |    34   35   28   29   33   28   32   26   28   25    28
  13  |   11    9   10   10   10    4    9   12   10   18    4 |    42   42   39   39   41   39   45   38   38   35    39
  14  |   12    9    8   13   14    4   10   10    9   16    4 |    28   27   26   30   25   26   25   29   30   28    25
  15  |    8   16    7   16   12    5   14   17   11   16    4 |    28   28   25   32   29   27   30   30   29   23    27
  16  |   13   23   11   15   12    4    8   14   14   19    5 |    27   32   29   28   30   24   26   26   22   25    25
  17  |   10   14    6   14   13    4    6   11    8   12    3 |    35   34   28   24   36   26   33   25   26   23    28
  18  |    7    8   12    8   12    2    6   11    9   14    3 |    19   21   21   21   19   20   20   25   23   24    20
  19  |   11   17    8   14   15    5    7   15   14   12    4 |    36   34   37   44   35   39   38   44   49   40    38
  20  |   17    8    7   14   18    4    7   13    9   22    4 |    24   24   20   28   23   23   22   28   25   27    21
  21  |   12   10    8   15   14    6    8   12   12   19    4 |    22   22   21   22   23   19   23   19   18   22    19
  22  |    9    9   11   13   18    4    7   11   11   15    4 |    23   27   24   26   27   22   24   22   23   19    22
  23  |   10   23   11   12   16    4    9   18   10   14    4 |    23   27   26   24   21   22   25   24   27   23    22
  24  |    7    6   11   10   10    3    7   12    5    8    3 |    20   24   23   16   19   18   24   20   19   18    19
  25  |   10    9    7    9    9    2   10    8    7   17    3 |    21   24   24   23   23   20   24   19   23   30    21
  26  |   13   10   18   10   12    4    7    8    8   12    4 |    28   31   31   25   31   26   30   26   26   30    27
  27  |   12   12    6    7   16    3    8    8    8    8    3 |    35   39   37   36   35   35   37   38   39   37    36
  28  |   15   15    9   13   12    5    7   16   11   18    4 |    27   26   24   31   26   26   27   30   29   29    25
  29  |    9   19    6   14   14    5   11   16   13   15    4 |    48   49   46   51   48   47   46   47   51   46    47
  30  |   10   10   12    9    8    3    5   13    5    8    3 |    22   29   26   21   21   22   28   20   22   22    23
  31  |   11    9   10   14    8    4    9   11   11   14    3 |    33   35   33   32   30   31   36   29   31   34    31
  32  |    6    8    4    5   11    3    7    8    9   10    2 |    27   31   26   27   28   25   27   25   29   29    26
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |   11   13    9   12   13    4    8   13   10   14      |T   72   68   73   73   56   70   74   73   73   73    71
 WRMS |   11   13    9   11   13    4    8   12    8   14      |NE  72   68   73   73   56   70   74   73   73   73    71
 MEDI |   10   10    8   12   12    4    8   12    9   14      |MD  28   31   26   28   29   26   30   27   28   28    26

Table 3.2019.1   GPS week: 2019   Day: 1   MJD: 58378.000                            

        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    9    8    8    2    6    9    5    8    2 |    22   25   23   20   20   19   26   19   20   22    21
   2  |   12   12    9   15   14    6    7   23   11   15    4 |    23   22   22   20   20   18   22   26   20   18    19
   3  |   11   10    5    8   10    3    7    8    6   15    3 |    24   26   22   24   27   21   24   21   20   29    22
  X4  |    2  ---  ---  ---  ---   23  ---  ---  ---  ---    0 |    38  ---  ---  ---  ---   35  ---  ---  ---  ---    37
   5  |   11   12    8   12   16    4    9   13    9   13    4 |    23   21   17   22   23   18   22   21   18   16    19
   6  |    7    8    9   12    8    3    7   10    6    7    3 |    29   33   28   28   26   26   34   28   26   26    28
   7  |   10   12   11   11    7    4    9   17   11   17    4 |    22   25   22   22   20   21   25   22   22   23    21
   8  |    9   11    7   16   16    3    7    8    8   12    3 |   670  668  669  670  331  670  670  670  671  668   670
   9  |    9   15    7    8   10    3    8   11    8   15    3 |   926  651  925  927  652  927  927  930  928  927   927
  10  |    4    7    4    8   10    3    8    8    6   10    2 |    20   22   19   21   22   20   22   21   23   23    20
  11  |   12   12   14    8   11    2    8    9    6   15    3 |    21   29   18   22   20   20   28   22   21   18    20
  12  |   12   22    8   13   11    3   10   16   11   16    4 |    29   32   28   28   29   26   30   25   28   23    27
  13  |   11    9    9   10    9    3    9   11    9   12    3 |    28   33   29   30   29   28   35   27   29   24    29
  14  |    9    9    7   12   14    4    9   11   10   15    3 |    26   22   22   25   20   21   22   23   23   22    21
  15  |   12   14    6   13    9    4    9   12   12   13    4 |    21   22   19   24   22   20   21   24   24   16    19
  16  |    9   23    9   14   11    5    9   17   12   17    4 |    21   23   22   21   21   18   21   20   19   19    19
  17  |   10   17    6   16   12    5    8   11    9   12    4 |    29   31   25   26   33   25   30   24   27   21    26
  18  |    9   12    9   11    9    2    5    9    8   18    3 |    19   23   21   22   22   20   21   24   21   25    20
  19  |   11   18    7   14   12    5    8   13   11   12    4 |    26   27   29   34   27   30   28   33   33   31    29
  20  |   10    9    7   14   13    4    8   13    9   20    4 |    19   19   16   22   18   17   18   19   19   19    16
  21  |   10    8    7   15   12    4    8   12   12   19    4 |    24   25   23   20   24   19   24   19   21   24    20
  22  |   10   10   10   13   15    4    7   12    9   13    4 |    21   25   19   25   25   20   23   21   22   19    20
  23  |   10   26    6   15   13    4    7   15   12   16    4 |    20   23   19   19   18   15   20   18   21   15    17
  24  |    9    9   12   13    7    4    7   10    7   10    3 |    19   29   23   16   19   19   26   22   24   22    21
  25  |   11    8    6    8    8    3    8    9    5   14    3 |    19   20   19   16   17   15   19   16   17   25    17
  26  |   11    7    7    8    7    2    7    9    7   12    3 |    21   25   23   21   21   20   25   21   21   26    21
  27  |   10   10    9   12   19    6    9    7    8   11    3 |    32   34   32   32   32   30   32   32   32   33    31
  28  |   10   10    9   11   13    4    6   14   11   15    4 |    23   22   20   26   20   21   22   25   23   22    21
  29  |   16   18    6   14   14    6   10   14   12   10    4 |    35   29   28   30   31   28   29   31   33   28    29
  30  |    9    8   11    7    6    3    6   11    5    9    3 |    24   30   24   22   21   21   30   21   23   24    24
  31  |    7   10   10   14    8    4    8   10   10   15    3 |    26   30   26   25   22   23   29   23   24   28    24
  32  |   16   10    5    7   10    3    6    6    8   10    3 |    24   22   20   22   19   18   22   19   21   24    20
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |   11   13    8   12   11    4    8   12    9   14      |T   72   66   72   73   53   70   75   73   73   72    71
 WRMS |   11   13    8   12   12    4    8   11    8   13      |NE  72   66   72   73   53   70   75   73   73   72    71
 MEDI |   10   10    8   12   11    4    8   11    9   13      |MD  23   25   22   22   22   20   25   22   23   23    21

Table 3.2019.2   GPS week: 2019   Day: 2   MJD: 58379.000                            

        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  |    6    7   10    7    8    3    5    8    6   10    2 |    18   24   19   16   17   17   25   17   15   24    18
   2  |   11   10   10   16   12    6    9   23   11   18    4 |    14   19   19   19   20   15   19   26   15   20    16
   3  |    6    8    7    8   10    3    8    8    4   11    2 |    24   27   23   22   28   23   28   22   22   28    24
  X4  |    1  ---  ---  ---  ---   28  ---  ---  ---  ---    0 |    42  ---  ---  ---  ---   35  ---  ---  ---  ---    42
   5  |   12    9    7   15   15    5    7   14   11   14    4 |    24   25   21   23   25   19   24   20   22   18    21
   6  |    7    7    9    9    7    3    6    7    5    7    2 |    21   26   22   20   20   19   27   21   20   24    22
   7  |    8   11    9   10    7    4    8   16   10   15    3 |    30   29   28   26   24   25   29   23   26   27    26
   8  |   10   11    7    7   12    3    8    9    7   10    3 |   598  594  596  599  350  595  593  594  593  594   595
   9  |    6   13    6    8   11    3    6   10    6    7    3 |   681  406  678  682  396  681  682  683  679  683   681
  10  |    5    7    4    9   10    4    7    8    6    7    2 |    20   24   19   23   22   20   23   20   22   20    20
  11  |    9   10   15    6   11    3    8    9    6   14    3 |    21   26   17   19   18   18   26   20   19   17    19
  12  |    9   22    7   15   12    4    7   16   13   15    4 |    18   22   18   21   22   17   23   19   18   16    18
  13  |   11    7    8   12    7    5   10   13    9   13    3 |    28   30   27   25   27   25   33   26   24   26    26
  14  |    8   10    7   12   12    4    8   12    8   12    3 |    21   22   21   26   21   22   22   24   22   21    21
  15  |    6   14    5   14   12    5   11   13   11   11    3 |    19   22   22   29   24   23   23   26   24   18    22
  16  |    8   24    7   14   12    6    9   16   12   20    4 |    23   23   22   20   21   17   20   21   19   20    19
  17  |    7   15    6   15   13    5    8    9   10   11    3 |    26   29   22   24   28   21   28   23   21   21    23
  18  |    5    6   10    7    9    3    7   10   10   10    3 |    20   21   23   22   22   23   23   25   25   26    22
  19  |   11   18    8   14   13    5    8   14   10   13    4 |    25   24   24   29   24   26   25   28   27   27    24
  20  |    8    7    8   13   11    4    8   13    7   20    3 |    16   18   15   22   16   15   17   18   16   17    14
  21  |    9    7   10   12   10    6    9   11   12   20    4 |    21   22   23   18   22   18   24   15   15   18    18
  22  |    9    7   12   15   18    4    8   13   10   14    4 |    21   24   23   25   24   21   25   22   23   20    21
  23  |    9   29    7   14   12    4    7   16   11   13    4 |    18   23   18   20   17   16   18   18   18   14    16
  24  |    8    8   11   10    6    4    8   12    8    9    3 |    23   29   25   21   22   22   30   24   25   26    24
  25  |    8    8    6    8    8    4    8    8    7   11    2 |    17   22   20   19   17   17   21   16   15   23    18
  26  |   13   10    8    7    7    4    7    9    6   10    3 |    26   27   23   23   23   21   26   22   23   25    23
  27  |    7   11    6    5   12    2    7    8    6    8    2 |    23   25   23   23   25   23   27   26   25   26    24
  28  |   12    9    9   12   10    5    6   15   10   14    3 |    21   21   20   25   21   20   23   23   19   20    19
  29  |   10   18    6   12   13    7    9   13   13   14    4 |    26   23   21   25   25   22   26   25   24   22    23
  30  |    6    8   11    7    7    3    7   11    5    8    2 |    25   28   26   23   20   22   30   22   20   22    24
  31  |    9    9    8   13    7    4    9   12   11   15    3 |    24   30   26   22   25   23   31   20   22   27    24
  32  |    8    8    6    8   10    2    7    6    6   10    2 |    27   28   25   26   27   24   28   25   27   28    26
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |    9   12    8   11   11    4    8   12    9   13      |T   61   55   61   62   44   59   64   61   60   61    60
 WRMS |    9   12    9   11   11    4    8   12    7   12      |NE  61   55   61   62   44   59   64   61   60   61    60
 MEDI |    8    9    8   12   11    4    8   12    9   12      |MD  23   24   22   23   22   21   25   22   22   22    22

Table 3.2019.3   GPS week: 2019   Day: 3   MJD: 58380.000                            

        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    9   12    7    8    4    7    7    8   12    3 |    22   31   22   24   24   24   29   22   25   27    24
   2  |   14   10    9   15   16    6    8   22   12   17    5 |    20   24   24   26   22   21   23   30   23   24    21
   3  |   13    9    8    9   12    3    8    9    7   12    3 |    28   29   25   26   30   24   27   22   24   28    25
  X4  |    4  ---  ---  ---  ---   31  ---  ---  ---  ---    0 |    30  ---  ---  ---  ---   33  ---  ---  ---  ---    31
   5  |   10    6    9   13   16    4    9   13    8   14    3 |    27   30   26   27   32   24   30   26   26   21    26
   6  |   10    7    9   10    8    3    6    8    4    8    2 |    30   35   30   28   28   28   34   31   30   31    30
   7  |   14   13   10   13    9    4   10   18   10   16    4 |    33   33   30   29   29   30   34   24   30   31    29
  X8  |   20   46   19   17  ---   12   41   21   16   23   10 |   996  994  991  995  ---  994  996 9999  994 9999   995
  X9  |   23  ---   23   31  ---   25  106   29   41   35   14 |  9999  --- 9999 9999  --- 9999 9999 9999 9999 9999  9999
  10  |    8    8    6    7   13    3    8   10    7    6    3 |    25   27   24   27   28   24   25   25   26   27    25
  11  |    9   10   17    7   11    4    9    8    8   15    4 |    24   32   23   25   24   25   31   25   26   21    24
  12  |   17   22    5   16   14    6    9   15   11   16    5 |    25   29   25   26   28   25   28   25   27   21    24
  13  |   13    7   10   12    9    3    9   12   10   13    3 |    22   29   23   24   22   22   27   22   26   18    22
  14  |   11    9   10   10   12    4    9    9    8   12    3 |    24   25   22   26   22   22   24   23   23   23    22
  15  |   11   13    8   15   11    4   11   16    8   16    4 |    29   31   27   33   32   29   29   32   31   30    29
  16  |   13   23    8   16   14    7    9   15   12   16    5 |    25   23   26   25   23   24   24   25   25   25    23
  17  |   11   13    7   14   13    3   10   10    9   14    4 |    30   32   25   27   32   26   31   26   26   26    27
  18  |    7    7    9    9   12    4    7   11    9   11    3 |    21   23   22   24   21   23   20   21   25   19    20
  19  |   11   20    6   14   14    5    9   14    9   13    4 |    31   32   31   34   33   31   31   34   33   32    31
  20  |   14    8    9   13   17    5    7   14   10   17    4 |    21   21   18   25   21   20   20   24   22   22    19
  21  |   12    9   11   15   13    6    8   11   11   18    4 |    21   25   23   22   22   20   24   20   20   23    20
  22  |   16    9    9   13   18    5    8   14   11   16    4 |    26   25   26   29   28   26   26   25   26   22    24
  23  |    9   30    7   17   14    5   11   13    8   12    5 |    22   23   21   26   24   20   20   20   20   19    19
  24  |   10    8   12   11    8    4    7   12    6   10    3 |    19   26   22   20   19   18   26   18   23   21    20
  25  |    9    8    7   10    7    4    8    8    6   11    3 |    22   25   23   22   23   21   23   23   22   27    22
  26  |   13    9    7    9    8    5    7    9    6   13    3 |    26   29   25   25   24   24   26   22   21   29    23
  27  |   10   16    7   12   15    7    8    8    5   22    4 |    26   29   29   27   30   26   29   28   29   38    27
  28  |   12   10    9   12   10    3    9   14   10   16    4 |    25   27   23   27   27   24   27   27   28   24    24
  29  |   14   18    7   12   14    6   11   13   11   14    4 |    24   22   20   24   24   22   21   23   23   17    20
  30  |   13    8   12    9    7    3    8   11    5    8    3 |    25   31   26   25   23   25   31   24   25   26    25
  31  |    7   11    9   12    9    4   10    9   11   13    3 |    30   34   32   27   29   28   34   25   25   32    29
  32  |    9    8    6    8   11    3    7    6    7    8    3 |    32   33   31   30   32   29   34   29   31   31    31
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |   12   13    9   12   12    4    9   12    9   14      |T   56   60   57   58   26   55   59   24   57   25    55
 WRMS |   12   13    9   12   12    4    9   11    8   14      |NE  56   60   57   58   26   55   59   24   57   25    55
 MEDI |   11    9    9   12   12    4    9   12    9   14      |MD  25   29   25   26   24   24   27   25   25   25    24

Table 3.2019.4   GPS week: 2019   Day: 4   MJD: 58381.000                            

        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    7    8    7   12    4    5   12    5    9    3 |    22   24   23   21   17   20   26   18   22   24    22
   2  |   12   11    9   13   14    6    7   24   13   17    4 |    20   20   19   19   19   17   21   28   16   22    18
   3  |   10    8    7    7   12    2    7   10    8   11    3 |    21   24   21   22   26   19   23   20   21   26    21
  X4  |    2  ---  ---  ---  ---   26  ---  ---  ---  ---    0 |    42  ---  ---  ---  ---   31  ---  ---  ---  ---    43
   5  |    9    9    9   13   14    3    7   15   10   15    3 |    22   25   23   21   27   20   26   23   21   20    21
   6  |    7    7    8    9   10    3    7    9    6    7    2 |    21   26   24   20   21   20   28   22   19   22    22
   7  |    8   12    9   12    8    5    9   19   12   17    4 |    30   30   29   27   26   27   31   26   26   30    28
  X8  |   11   13    9   11  ---    4    8    9    9   14    4 |   661  661  662  664  ---  658  656  658  660  652   659
   9  |    9   13    6    8   13    3    7   12   10   11    3 |   552  947  551  552  955  548  547  549  548  553   550
  10  |    5    9    5    8   11    4    7    9    8    7    2 |    20   21   20   22   21   20   23   19   23   23    20
  11  |   10   11   14    8   14    4    7   12    7   16    4 |    23   28   22   23   18   20   27   21   23   20    21
  12  |    7   22    8   14   14    4    6   16   12   18    4 |    19   25   19   25   22   20   23   20   20   20    20
  13  |   18    9    9   12    9    4    7   13   10   14    4 |    33   30   29   26   27   26   33   27   25   27    27
  14  |    9    9    7   14   16    4   10   11    8   12    3 |    24   21   23   27   22   23   23   24   22   22    22
  15  |    9   12    7   14   10    5   11   17   10   13    4 |    20   21   18   26   23   21   22   26   26   22    21
  16  |   10   23    6   17   17    7    7   15   16   16    5 |    24   22   22   22   26   19   20   21   24   20    20
  17  |   12   14    5   14   15    5    8   13   11   11    4 |    30   31   24   26   30   23   28   24   26   22    25
  18  |    8    6   10   12   11    4    7   10   10   13    3 |    22   24   26   23   21   24   23   26   28   28    23
  19  |   12   18    5   16   17    6    8   16   11   12    4 |    22   25   25   29   23   25   25   28   28   26    24
  20  |   12   10    8   12   14    4    7   15   11   19    4 |    19   18   16   22   16   17   17   21   19   18    16
  21  |   10    8    9   13   11    4    8   13   12   16    4 |    27   25   25   23   24   22   26   20   23   23    23
  22  |   13   10    8   13   19    5    8   15   12   14    4 |    22   24   22   23   24   21   23   22   24   20    21
  23  |    9   27    6   15   14    7    8   17   12   12    4 |    19   24   21   21   19   19   20   19   21   16    18
  24  |    8    7   12   12    8    4    6   14    9   13    3 |    27   33   31   25   26   27   35   29   26   32    29
  25  |   10    8    6   10    7    5    7   10    6   13    3 |    18   21   19   16   18   17   22   16   18   21    18
  26  |   11    8    5    9   13    4    6    8   11   10    3 |    25   25   23   22   26   23   26   22   26   23    24
  27  |   10   15    7   10   14    5    7   10    8   17    3 |    24   26   25   26   28   25   27   28   28   31    25
  28  |   10    9    8   12   11    5    6   15   10   15    3 |    25   23   21   25   21   20   22   23   23   20    21
  29  |    7   18    6   14   13    5   11   14   11   15    4 |    29   29   25   29   28   27   27   27   29   23    26
  30  |    7    9   10    7    6    3    7   13    7    7    3 |    24   29   25   24   22   22   29   23   21   25    24
  31  |    7   10    8   16   10    5   10   11   10   15    3 |    29   30   26   25   27   26   31   23   24   27    26
  32  |    6    9    7    7   13    2    6    7    7    6    2 |    28   31   29   29   31   28   32   27   27   29    29
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |   10   13    8   12   13    4    8   14   10   13      |T   60   75   60   61   54   58   62   60   60   60    59
 WRMS |   10   13    8   12   13    4    7   13    8   12      |NE  60   75   60   61   54   58   62   60   60   60    59
 MEDI |    9   10    8   12   13    4    7   13   10   13      |MD  24   25   23   24   23   22   26   23   24   23    22

Table 3.2019.5   GPS week: 2019   Day: 5   MJD: 58382.000                            

        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    8    9    8   12    4    5    8    9   10    3 |    19   24   22   22   20   19   23   17   20   21    20
   2  |   14   10   12   13   16    5    9   23   13   16    5 |    17   18   16   19   14   15   19   27   18   21    15
   3  |    9    8    7    8   12    3    6   11    7   10    3 |    28   28   28   31   30   25   27   26   26   28    27
  X4  |    1  ---  ---  ---  ---   20  ---  ---  ---  ---    0 |    32  ---  ---  ---  ---   26  ---  ---  ---  ---    31
   5  |   11   10   10   14   14    4    9   15   12   15    4 |    34   35   31   32   35   30   34   34   31   30    32
   6  |    9    6   10   10    9    3    7    9    8    7    3 |    19   25   21   18   19   18   26   20   17   21    20
   7  |   12   13    9   11   11    5    9   19   11   15    4 |    22   22   21   22   23   20   22   22   22   24    21
   8  |   14   15    7   10   12    3    8    9    7   12    3 |   429  432  429  428  247  430  431  431  429  428   429
   9  |   11   12    5    8   14    2    8   11    7   11    3 |   653  395  656  659  400  657  657  658  658  661   658
  10  |    9    9    5    8   11    3    8    9    5    6    2 |    27   26   24   26   25   24   29   26   27   26    25
  11  |   11   11   13    9   13    3    9   10    8   17    4 |    18   28   19   21   23   20   27   20   22   20    20
  12  |    9   20    9   14   16    5    7   16   13   18    4 |    24   28   22   27   32   23   28   24   25   19    24
  13  |   15   13    9   13   12    5    8   13    9   15    4 |    30   31   31   28   32   28   33   27   28   27    28
  14  |   10   11    7   13   16    5    7   10    8   11    3 |    23   23   19   28   22   21   21   23   22   22    20
  15  |    9   15    7   15   21    6   11   15   11   14    4 |    34   37   33   39   40   35   37   37   35   38    35
  16  |   10   24    7   18   20    5    8   17   14   17    5 |    26   25   24   27   33   23   24   24   24   23    23
  17  |   12   17    7   14   14    5    9   14   12   12    4 |    29   31   22   23   30   22   29   23   23   22    24
  18  |   10    8    9   12   11    3    4    8   11   12    3 |    12   16   14   14   16   13   16   16   19   17    14
  19  |   14   18    6   14   16    5   10   16   12   12    4 |    29   30   30   37   31   32   30   36   36   35    31
  20  |   14   10    8   12   13    4    8   14    9   19    4 |    21   20   17   24   21   19   21   25   23   22    19
  21  |   10    9   11   14   13    5    7   11   12   18    4 |    15   19   14   17   12   13   20   14   17   19    13
  22  |   14   11    9   15   21    6    8   15   13   14    4 |    18   22   19   22   24   16   21   19   20   15    17
  23  |   12   28    4   12   14    5    8   16    9   12    4 |    19   25   22   25   21   21   22   21   24   21    21
  24  |    7   10   10   11    9    4    9   13    7   12    3 |    17   23   20   15   16   15   23   17   19   21    18
  25  |   11   11   10    8   10    4    9   10    9   11    3 |    21   25   21   22   25   20   25   21   23   24    21
  26  |   10    7    5   11   13    2    6   11    7   11    3 |    22   25   22   21   28   21   24   21   23   24    22
  27  |   13   11    7   10   10    4    9   12    9    7    3 |    27   25   26   26   29   24   26   28   26   28    25
  28  |   12   10    8   11   14    5    5   14   11   12    3 |    23   27   23   28   25   23   25   28   26   26    24
  29  |   10   19    8   13   11    4    9   13   12   11    4 |    34   34   30   36   35   32   33   32   32   30    32
  30  |    7    8   10    7   10    3    5   12    5    7    3 |    16   24   21   16   18   18   26   17   19   19    20
  31  |    9   11    9   15   12    3    9   12    9   14    4 |    18   23   18   20   20   18   24   19   21   20    18
  32  |    8   10    6    8   16    3    7    7    8    9    3 |    38   39   38   40   38   37   39   37   41   38    38
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |   11   13    8   12   14    4    8   13   10   13      |T   56   51   56   58   44   54   59   57   57   57    55
 WRMS |   11   13    9   11   13    4    8   13    9   12      |NE  56   51   56   58   44   54   59   57   57   57    55
 MEDI |   10   11    8   12   13    4    8   12    9   12      |MD  23   25   22   25   25   21   26   24   23   23    22

Table 3.2019.6   GPS week: 2019   Day: 6   MJD: 58383.000                            

        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   10    8    6    9    4    5   11    8    6    2 |    18   24   20   18   17   16   22   20   17   19    18
   2  |   12   11   11   15   15    6    7   22   14   17    5 |    17   17   18   22   16   18   17   30   22   22    16
   3  |    7   10    6    6   10    4    7   12    9   12    3 |    36   41   35   36   39   36   37   36   33   39    36
  X4  |    2  ---  ---  ---  ---   26  ---  ---  ---  ---    0 |    41  ---  ---  ---  ---   34  ---  ---  ---  ---    41
   5  |    9    9    9   11   14    3    7   14   13   12    3 |    42   39   40   37   42   36   40   41   40   34    38
   6  |    8    7    9   10   11    3    5    9   10    5    3 |    19   23   20   17   18   16   23   21   17   18    19
   7  |    9   12    9   10    9    5    9   19   12   15    4 |    35   37   36   33   34   34   38   33   35   36    34
   8  |    7   14    6    8   11    3    7    9    7   13    3 |   284  283  285  283  144  284  283  287  280  290   285
   9  |   10   15    6    7   13    3    7   11   10   11    3 |   444  330  442  443  315  444  446  445  446  444   444
  10  |    7   10    5    7   10    3    8   12    8    6    2 |    37   37   34   35   34   34   36   38   34   36    35
  11  |   10   12   13    8   11    3    7   10    7   15    3 |    29   34   24   29   23   26   32   28   28   24    26
  12  |   10   23    9   17   15    4    7   14   12   17    4 |    32   39   32   33   40   31   34   31   30   29    31
  13  |   12   15    7   10   12    4    8   11   10   11    3 |    42   42   39   37   41   37   43   38   38   32    38
  14  |   16    9    7   13   18    4    8    8    9   12    4 |    31   30   28   34   28   29   29   30   32   29    28
  15  |    6   19    4   14   16    5   11   16   10   12    4 |    50   48   47   51   50   47   49   53   46   48    48
  16  |   11   25    6   15   19    5   10   17   12   16    5 |    39   38   35   35   37   33   33   32   35   31    33
  17  |   13   15    6   14   16    5    8   13   10   12    4 |    39   38   29   27   38   29   36   29   28   26    31
  18  |    7    9    8   10   10    3    5   10    8   11    3 |    19   20   19   21   18   19   19   25   22   25    19
  19  |   16   18    7   16   17    6    8   16   12   14    4 |    37   40   43   48   40   45   40   53   49   46    42
  20  |   12    7    8   11   13    4    8   18   10   17    4 |    27   29   23   34   27   28   29   37   31   30    28
  21  |    9    9   11   13   13    5    8   12   12   16    4 |    21   22   21   21   19   19   23   22   21   22    19
  22  |   10   10   10   15   17    5    9   15   12   14    4 |    25   29   25   27   27   24   27   25   24   18    23
  23  |   10   30    5   13   13    5    7   18   10   12    4 |    20   25   23   26   23   22   21   25   25   25    21
  24  |    9    8   13    9    9    4    8   11   10    8    3 |    20   25   23   17   19   18   25   20   20   17    19
  25  |    9    9    8   10    8    4    7    9   11   12    3 |    26   28   27   27   28   25   28   25   23   29    25
  26  |   11   10    5    9   13    4    8   10    8    9    3 |    34   33   32   31   33   31   32   28   31   29    30
  27  |    8   17    9   10   11    5    8    9    8    9    3 |    38   39   38   37   36   38   40   40   40   37    37
  28  |    9   12   10   10   15    5    7   16   12   13    4 |    32   33   30   34   29   31   32   33   34   31    31
  29  |    8   21    7   12   17    5   10   12   13   12    4 |    50   49   51   52   54   51   48   52   51   48    50
  30  |    5    7    9    6    9    3    5   12    7    6    2 |    19   24   22   20   18   18   27   19   20   21    21
  31  |    7   11    8   13   12    4    8   11   11   15    3 |    32   34   33   32   31   30   36   27   32   32    31
  32  |    9   11    8    7   16    3    9    7    9   10    3 |    38   44   40   42   39   39   42   40   43   45    41
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |   10   14    8   11   13    4    8   13   10   12      |T   52   50   52   52   43   50   53   53   52   52    51
 WRMS |   10   14    8   12   13    4    8   13   10   13      |NE  52   50   52   52   43   50   53   53   52   52    51
 MEDI |    9   11    8   10   13    4    8   12   10   12      |MD  32   34   32   33   33   31   33   31   32   30    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 4.2019   GPS week: 2019   MJD: 58377.0-58383.0

CENT| CLK EPO  |        BRUX       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3071 |U    7    13    22 |U    8    11    29 |U    8    11    17 |
emr | emr 2962 |U   13    17    33 |U   14    15    47 |    14    13    37 |
esa | esa 2976 |     7    14    23 |U    9    12    33 |     8     9    20 |
gfz | gfz 2975 |U    8    12    22 |U    8    12    32 |U    8    10    19 |
grg | grg 2929 |U    8    16    24 |U   10    14    34 |     9    12    21 |
igr | igr 2961 |     7    12    22 |     8    11    30 |     8    10    18 |
igs | igs 2974 |     7    14    22 |     9    11    31 |     9    11    22 |
jpl | jpl 2976 |U   10    15    33 |U   11    13    43 |U   13    12    33 |
mit | mit 2976 |    10    15    29 |U   13    14    38 |U   10    14    26 |



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 5.2019.0   GPS week: 2019   Day: 0   MJD: 58377.0

CENT| CLK EPO  |        BRUX       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3072 |     9    11    17 |     8     9    26 |     8    12    18 |
emr | emr 2976 |    11    17    34 |    16    15    42 |    13    20    38 |
esa | esa 2976 |     8    13    19 |     9     8    31 |     9     9    20 |
gfz | gfz 2976 |     9    13    18 |     6    10    24 |     9    12    18 |
grg | grg 2970 |     8    13    21 |    10    10    33 |     8    13    22 |
igr | igr 2976 |     8    12    18 |     7     9    27 |     8    12    18 |
igs | igs 2976 |     8    12    18 |     9     9    27 |     9    12    21 |
jpl | jpl 2976 |    10    15    28 |    11    11    33 |    11    15    29 |
mit | mit 2976 |     9    14    19 |    13    11    26 |    10    13    27 |

Table 5.2019.1   GPS week: 2019   Day: 1   MJD: 58378.0

CENT| CLK EPO  |        BRUX       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3071 |     6    11    21 |    14    19    41 |     8    10    15 |
emr | emr 2976 |    12    15    34 |    18    24    54 |    12    10    30 |
esa | esa 2976 |     5    12    22 |    15    20    46 |     8     8    20 |
gfz | gfz 2976 |     6    10    21 |    14    21    48 |     8     9    16 |
grg | grg 2967 |     6    15    21 |    14    21    43 |     8    10    15 |
igr | igr 2880 |     5     9    20 |    15    18    41 |     7     9    16 |
igs | igs 2976 |     5    11    20 |    15    20    44 |     9     8    19 |
jpl | jpl 2976 |     7    10    29 |    15    20    49 |    12     8    30 |
mit | mit 2976 |     9    13    33 |    17    22    49 |    11    13    30 |

Table 5.2019.2   GPS week: 2019   Day: 2   MJD: 58379.0

CENT| CLK EPO  |        BRUX       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3072 |     8    14    20 |    10    11    28 |     8     8    20 |
emr | emr 2976 |    12    15    30 |    16    12    45 |    14     9    36 |
esa | esa 2976 |     7    14    24 |    11    11    30 |     8     6    24 |
gfz | gfz 2976 |     7    14    20 |     8    11    33 |     8     8    25 |
grg | grg 2970 |     9    16    22 |    11    12    35 |     9     9    22 |
igr | igr 2976 |     8    14    21 |    10    10    29 |     8     8    22 |
igs | igs 2976 |     8    14    22 |    11    10    31 |     9     7    25 |
jpl | jpl 2976 |    10    15    36 |    13    12    38 |    12     8    35 |
mit | mit 2976 |  ----  ----  ---- |  ----  ----  ---- |  ----  ----  ---- |

Table 5.2019.3   GPS week: 2019   Day: 3   MJD: 58380.0

CENT| CLK EPO  |        BRUX       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3071 |     9    14    23 |     7     8    28 |     7    12    16 |
emr | emr 2880 |    15    18    34 |    14    12    44 |    16    20    45 |
esa | esa 2976 |     9    14    24 |     7    11    27 |     7     9    17 |
gfz | gfz 2976 |     8    13    23 |     6    11    30 |     7    11    18 |
grg | grg 2784 |    10    18    27 |     8    10    32 |     9    14    26 |
igr | igr 2976 |     9    13    24 |     6     9    28 |     7    12    18 |
igs | igs 2976 |     9    15    25 |     7     9    29 |     9    14    25 |
jpl | jpl 2976 |    16    15    39 |    11    10    69 |    18    20    43 |
mit | mit 2976 |    11    16    26 |    11    11    37 |     9    14    26 |

Table 5.2019.4   GPS week: 2019   Day: 4   MJD: 58381.0

CENT| CLK EPO  |        BRUX       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3069 |     7    10    19 |     7     8    24 |     8    12    18 |
emr | emr 2976 |    14    18    30 |    13    11    38 |    14     9    35 |
esa | esa 2976 |     7    11    22 |     8     9    28 |     8    11    18 |
gfz | gfz 2976 |     7     8    20 |     7     9    28 |     8    12    19 |
grg | grg 2879 |     7    13    24 |    12    22    34 |    10    14    23 |
igr | igr 2976 |     6    10    19 |     7     8    25 |     8    11    18 |
igs | igs 2967 |     6    11    20 |     8     8    25 |     9    12    20 |
jpl | jpl 2976 |     8    14    34 |    10    10    34 |    13    12    28 |
mit | mit 2976 |    11    11    23 |    13    11    31 |    10    13    25 |

Table 5.2019.5   GPS week: 2019   Day: 5   MJD: 58382.0

CENT| CLK EPO  |        BRUX       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3070 |     9    16    37 |     8    12    26 |     7    10    16 |
emr | emr 2975 |    13    14    44 |    11    15    48 |    11    11    33 |
esa | esa 2976 |     9    16    38 |     8    14    32 |     7     9    22 |
gfz | gfz 2975 |    10    15    38 |     9    12    28 |     6     8    18 |
grg | grg 2969 |    10    20    40 |     9    13    28 |     8    12    20 |
igr | igr 2972 |     9    16    37 |     8    12    28 |     7     9    18 |
igs | igs 2975 |     9    16    36 |     8    12    30 |     7     9    21 |
jpl | jpl 2976 |    10    19    41 |    10    12    38 |    11     9    34 |
mit | mit 2976 |    11    19    43 |    10    16    49 |     8    17    25 |

Table 5.2019.6   GPS week: 2019   Day: 6   MJD: 58383.0

CENT| CLK EPO  |        BRUX       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3072 |     6    15    18 |     5    10    28 |     8    12    19 |
emr | emr 2976 |    16    22    24 |    13    16    58 |    16    13    39 |
esa | esa 2976 |     6    15    14 |     6    11    35 |     9    11    19 |
gfz | gfz 2974 |     6    14    17 |     7    12    34 |     8    12    20 |
grg | grg 2970 |     7    17    17 |     7    12    32 |     9    15    21 |
igr | igr 2976 |     5    14    14 |     5    11    31 |     9    13    18 |
igs | igs 2976 |     6    15    15 |     5    11    34 |    10    12    21 |
jpl | jpl 2976 |     8    16    26 |     6    14    44 |    14    11    29 |
mit | mit 2976 |  ----  ----  ---- |  ----  ----  ---- |  ----  ----  ---- |


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 6.2019   GPS week: 2019   MJD: 58377.500-58383.500

                                                         AC LOD  AC LOD
CENT  FLAG  |   Xpole   Ypole     Xrt     Yrt    LOD |    BIAS  BIAS RMS
            |   [uas]   [uas]   [uas/d] [uas/d]  [us]|    [us]    [us]
------------+----------------------------------------+------------------
cod   uuuuu |      -3      -5      -6     -28     -7 |      16     26
            |      18      12      98     121      7 |       9
emr   uuuuu |     -44      34     -24     -15     -7 |      43     48
            |       6      17      76      69      4 |       6
esa   uuuuu |      18       9       4      73     -2 |      33     37
            |      12      14      43      49      2 |       6
gfz   uuuuu |      37      -9     111     217     -6 |      20     28
            |      17      19      60     140      3 |       8
grg   uuuuu |      -8      -7     -33     -21      2 |      -6     15
            |       6      10      48      27      3 |       5
igr   xxxxx |      13       3      68      17     -3 |      -5     17
            |      13      12      27      46      3 |       6
irf   xxxxx |     -11     -18      -6     -31     14 |     -10     20
            |       7      10      29      22     13 |       4
jpl   uuuuu |      -9     -22      11      13      7 |      44     46
            |      12       9      45      30      6 |       3
mit   uuuuu |      12       8     -16    -113     -1 |      19     27
            |      11      11      58      41      5 |       8
ngs   uuuuu |      -3     -11      83     -65      0 |      11     19
            |      29      20      60     182      4 |       6
sio   uuuux |     -11      29    -213    -108      1 |      76     78
            |      10      14      59      56      6 |       5


Table 7.2019.0   GPS week: 2019   Day: 0   MJD: 58377.500

                                                         AC LOD  AC LOD
CENT  FLAG  |   Xpole   Ypole     Xrt     Yrt    LOD |    BIAS  BIAS RMS
            |   [uas]   [uas]   [uas/d] [uas/d]  [us]|    [us]    [us]
------------+----------------------------------------+------------------
cod   uuuuu |     -21     -13     -71    -155     -5 |      28     30
emr   uuuuu |     -38      58    -147    -114     -5 |      50     53
esa   uuuuu |      18      19      -2      73     -1 |      42     44
gfz   uuuuu |      10      15      30     -31     -8 |      32     35
grg   uuuuu |     -14     -13      -4     -13      2 |       2     10
igr   xxxxx |      12       0     109       5      3 |       3     11
irf   xxxxx |     -15     -16      33     -49    -11 |       0     18
jpl   uuuuu |      11     -27      21      43      8 |      49     51
mit   uuuuu |       7       7      67    -132     -9 |      34     41
ngs   uuuuu |       3     -40     198     265     -2 |      21     23
sio   uuuux |      -2      37    -241    -126      3 |      84     85

Table 7.2019.1   GPS week: 2019   Day: 1   MJD: 58378.500

                                                         AC LOD  AC LOD
CENT  FLAG  |   Xpole   Ypole     Xrt     Yrt    LOD |    BIAS  BIAS RMS
            |   [uas]   [uas]   [uas/d] [uas/d]  [us]|    [us]    [us]
------------+----------------------------------------+------------------
cod   uuuuu |      21      15      71      80    -11 |      23     28
emr   uuuuu |     -45      46       1    -118     -7 |      45     50
esa   uuuuu |      20      10     -79      70      1 |      36     39
gfz   uuuuu |      21      14      66     292    -13 |      26     31
grg   uuuuu |     -11     -15      -8      -4      5 |      -4     12
igr   xxxxx |      32       9      90      73     -7 |      -2     13
irf   xxxxx |      -5     -15       3     -21      7 |      -8     21
jpl   uuuuu |       4     -22      49       6     17 |      43     46
mit   uuuuu |       4       6      12    -113     -5 |      25     33
ngs   uuuuu |     -22     -31      13    -150     -3 |      15     20
sio   uuuux |      -4      13    -155     -65     -3 |      79     80

Table 7.2019.2   GPS week: 2019   Day: 2   MJD: 58379.500

                                                         AC LOD  AC LOD
CENT  FLAG  |   Xpole   Ypole     Xrt     Yrt    LOD |    BIAS  BIAS RMS
            |   [uas]   [uas]   [uas/d] [uas/d]  [us]|    [us]    [us]
------------+----------------------------------------+------------------
cod   uuuuu |       3      -1      24      92    -12 |      20     27
emr   uuuuu |     -51       5      -1      29     -3 |      46     50
esa   uuuuu |      18       8      31     119     -2 |      35     39
gfz   uuuuu |      46     -22     168     397     -5 |      23     30
grg   uuuuu |      -2     -12     -26     -74      5 |      -5     12
igr   xxxxx |      12       7      61      43     -4 |      -3     14
irf   xxxxx |     -21     -33       6     -56     14 |     -10     21
jpl   uuuuu |     -16      -6     -75      29      6 |      44     46
mit   uuuuu |      -3       7      18    -164     -2 |      21     30
ngs   uuuuu |       5       5      43    -301     -3 |      14     20
sio   uuuux |     -11      13    -225    -133     -6 |      78     80

Table 7.2019.3   GPS week: 2019   Day: 3   MJD: 58380.500

                                                         AC LOD  AC LOD
CENT  FLAG  |   Xpole   Ypole     Xrt     Yrt    LOD |    BIAS  BIAS RMS
            |   [uas]   [uas]   [uas/d] [uas/d]  [us]|    [us]    [us]
------------+----------------------------------------+------------------
cod   uuuuu |      -7     -15     155    -183    -18 |      18     24
emr   uuuuu |     -44      30      24      10    -14 |      45     49
esa   uuuuu |      39      29     -13      27     -1 |      35     38
gfz   uuuuu |      55     -37      50     323     -7 |      21     28
grg   uuuuu |      -1       0    -140      -9      3 |      -4     13
igr   xxxxx |      20      20      25      70     -3 |      -4     14
irf   xxxxx |      -1     -22     -50      -5     23 |     -12     20
jpl   uuuuu |     -17     -22      -6     -10     11 |      44     46
mit   uuuuu |      15      16     -65     -53      7 |      17     22
ngs   uuuuu |     -25     -22     121     -59      2 |      12     19
sio   uuuux |     -13      39    -237      -2      8 |      77     79

Table 7.2019.4   GPS week: 2019   Day: 4   MJD: 58381.500

                                                         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 |     -30     -19    -141    -121      1 |      14     25
emr   uuuuu |     -36      46     -24      13     -3 |      43     48
esa   uuuuu |       0       9      14      24     -4 |      33     37
gfz   uuuuu |      35     -12     166     193     -5 |      19     28
grg   uuuuu |      -1     -10     -14      11      2 |      -6     15
igr   xxxxx |      13     -15      53     -12     -5 |      -6     17
irf   xxxxx |     -14     -18      10      -3     19 |     -10     19
jpl   uuuuu |     -11     -29      41      54      6 |      45     47
mit   uuuuu |      12      17       8     -63      1 |      17     22
ngs   uuuuu |      53       6      65      -4     -1 |      10     19
sio   uuuux |     -31      22    -167    -164     -3 |      77     79

Table 7.2019.5   GPS week: 2019   Day: 5   MJD: 58382.500

                                                         AC LOD  AC LOD
CENT  FLAG  |   Xpole   Ypole     Xrt     Yrt    LOD |    BIAS  BIAS RMS
            |   [uas]   [uas]   [uas/d] [uas/d]  [us]|    [us]    [us]
------------+----------------------------------------+------------------
cod   uuuuu |      11       2     -56       4      0 |       7     23
emr   uuuuu |     -50      33    -100      32    -10 |      37     44
esa   uuuuu |      10     -15      55      40      1 |      28     34
gfz   uuuuu |      53      -4     160     209     -7 |      12     26
grg   uuuuu |     -14     -12     -11     -31     -2 |     -11     20
igr   xxxxx |      13     -11      74     -17     -3 |     -11     23
irf   xxxxx |      -9     -21      -8     -47     25 |     -13     21
jpl   uuuuu |     -15     -15      -3     -25      1 |      42     45
mit   uuuuu |      18     -15     -46    -135      1 |      12     22
ngs   uuuuu |      -5       3      65      -3      7 |       5     19
sio   uuuux |     -13      51    -152    -129     -4 |      72     74

Table 7.2019.6   GPS week: 2019   Day: 6   MJD: 58383.500

                                                         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 |       5      -5     -20      82     -1 |       3     20
emr   uuuuu |     -44      22      78      39     -6 |      32     39
esa   uuuuu |      24       1      25     155     -6 |      24     30
gfz   uuuuu |      42     -14     136     136     -1 |       7     21
grg   uuuuu |     -12      12     -26     -27     -1 |     -14     21
igr   xxxxx |     -10       8      63     -47     -4 |     -15     24
irf   xxxxx |     -11       1     -37     -36     23 |     -13     21
jpl   uuuuu |     -18     -30      51      -7     -1 |      40     43
mit   uuuuu |      32      15    -104    -134      2 |       9     19
ngs   uuuuu |     -31       3      80    -208      3 |       2     16
sio   uuuux |      -2      27    -313    -140     10 |      68     70


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