[IGSREPORT-28672] Wk 2208 IGS Final Orbits

acc acc at igs.org
Fri May 20 05:27:57 UTC 2022


Author:  AC Coordinator / GA MIT 

sum-file Version 2.0
Final IGS Orbit Combination - Week 2208   (May 01, 2022 - May 07, 2022)

Contacts: acc at igs.org


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

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

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

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

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

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

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


SOFTWARE:
---------

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

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

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

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

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


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

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

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

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



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

igs2208[0-6].sp3  IGS GPS ephemeris files in SP3 format.
igs2208[0-6].clk  IGS GPS satellite and station clocks in clock RINEX format.
igs2208[0-6].cls  IGS GPS clock combination summary report.
igs22087.erp      Earth Rotation Parameters (ERP) and their rates as well as
                  Universal Time (UT1-UTC) and Length Of Day (LOD) associated 
                  with IGS ephemerides.
igs22087.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 KOUR MAL2 NIST SAVO GLSV
                0  |  EMR   | NIST
                0  |  ESA   | MAL2 PTBB
                0  |  GRG   | IRKJ SGOC GLSV MAL2 SGOC
                1  |  COD   | CPVG MDVJ OUS2 RIO2 SGOC TLSE OUS2 TLSE
                1  |  EMR   | MCM4 MDVJ TSKB
                1  |  ESA   | OUS2 PTBB CPVG OUS2
                1  |  GRG   | CPVG GLSV GLSV VOIM
                1  |  JPL   | CPVG RIO2
                2  |  COD   | AREQ BRFT CKIS COCO DAEJ FAA1 IQAL MAL2 NTUS SCRZ
                2  |  COD   | SGOC THTI VOIM XMIS AREQ
                2  |  EMR   | MCM4 DAEJ MCM4
                2  |  ESA   | 6 PTBB
                2  |  GRG   | MCM4 MCM4 SVTL
                3  |  COD   | 1 1 ASCG AUCK BARH BJFS BOGT BOR1 BRAZ BRFT BRST
                3  |  COD   | CAS1 CCJ2 CHTI CKIS CPVG DAEJ GLSV GRAC GRAS HOFN
                3  |  COD   | INVK KERG KRGG MANA MATE MAYG MCIL NIST NTUS NYA1
                3  |  COD   | PARC PDEL PERT POVE REYK RIOP SAMO SAVO SCRZ SOFI
                3  |  COD   | SUWN SYOG THTI TLSE TRO1 TSKB UFPR WARK WTZR WUHN
                3  |  COD   | XMIS ASCG AUCK BARH BJFS BOGT BOR1 BRAZ BRFT BRST
                3  |  COD   | CAS1 CCJ2 CHTI CKIS CPVG DAEJ GLSV GRAC GRAS HOFN
                3  |  COD   | INVK KERG KRGG MANA MATE MAYG MCIL NIST NTUS NYA1
                3  |  COD   | PARC PDEL PERT POVE REYK RIOP SAMO SAVO SCRZ SOFI
                3  |  COD   | SUWN SYOG THTI TLSE TRO1 TSKB UFPR WARK WTZR WUHN
                3  |  COD   | XMIS
                3  |  EMR   | 1 21 1 21 CHUR
                3  |  ESA   | LAUT
                3  |  GRG   | 1 6 1 6
                3  |  JPL   | MCM4
                3  |  MIT   | CEBR
                4  |  COD   | 18 18 ASCG AUCK BARH BJFS BOR1 BRAZ BRFT BRST CAS1
                4  |  COD   | CCJ2 CHTI CKIS CPVG DAEJ GLSV GOLD GRAS HOFN INVK
                4  |  COD   | KERG KRGG LMMF MANA MATE MAYG MCIL NIST NTUS NYA1
                4  |  COD   | PARC PDEL PERT POLV POVE REYK SAMO SAVO SCRZ SOFI
                4  |  COD   | STK2 SUWN SYOG THTI TLSE TRO1 TSKB UFPR WARK WTZR
                4  |  COD   | WUHN XMIS ASCG AUCK BARH BJFS BOR1 BRAZ BRFT BRST
                4  |  COD   | CAS1 CCJ2 CHTI CKIS CPVG DAEJ GLSV GOLD GRAS HOFN
                4  |  COD   | INVK KERG KRGG LMMF MANA MATE MAYG MCIL NIST NTUS
                4  |  COD   | NYA1 PARC PDEL PERT POLV POVE REYK SAMO SAVO SCRZ
                4  |  COD   | SOFI STK2 SUWN SYOG THTI TLSE TRO1 TSKB UFPR WARK
                4  |  COD   | WTZR WUHN XMIS
                4  |  EMR   | 18 18 MDVJ
                4  |  ESA   | GAMB SVTL GAMB SVTL
                4  |  GFZ   | 18 18 ABPO GLSV ABPO GLSV
                4  |  GRG   | 21 21 SGOC
                5  |  COD   | ASCG AUCK BARH BJCO BJFS BOR1 BRAZ BRFT BRST CAS1
                5  |  COD   | CCJ2 CHTI CKIS CPVG DAEJ GLSV GRAS HOFN HYDE INVK
                5  |  COD   | ISBA KERG KRGG LMMF MANA MATE MAYG MCIL NICO NNOR
                5  |  COD   | NTUS NYA1 PDEL PERT POVE REYK SAMO SAVO SCRZ SGOC
                5  |  COD   | STK2 SUWN SYOG TLSE TRO1 TSKB UFPR WARK WTZR WUHN
                5  |  COD   | XMIS ASCG AUCK BARH BJCO BJFS BOR1 BRAZ BRFT BRST
                5  |  COD   | CAS1 CCJ2 CHTI CKIS CPVG DAEJ GLSV GRAS HOFN HYDE
                5  |  COD   | INVK ISBA KERG KRGG LMMF MANA MATE MAYG MCIL NICO
                5  |  COD   | NTUS NYA1 PDEL PERT POVE REYK SAMO SAVO SCRZ SGOC
                5  |  COD   | STK2 SUWN SYOG TLSE TRO1 TSKB UFPR WARK WTZR WUHN
                5  |  COD   | XMIS
                5  |  EMR   | MCM4 MCM4 MDVJ
                5  |  GFZ   | 18 18
                5  |  GRG   | GRAC GRAC MAW1 NNOR
                5  |  JPL   | ZECK CHUR ZECK
                6  |  COD   | ASCG AUCK BARH BJCO BJFS BOR1 BRAZ BRFT BRST CAS1
                6  |  COD   | CCJ2 CHTI CKIS CPVG DAEJ GLSV GRAC GRAS HOFN HYDE
                6  |  COD   | INVK KERG KIT3 KRGG MANA MATE MAYG MCIL NIST NTUS
                6  |  COD   | NYA1 PARC PDEL PERT POVE REYK SAMO SAVO SGOC SOFI
                6  |  COD   | STK2 SUWN SYOG THTI TLSE TRO1 TSKB UFPR WARK WTZR
                6  |  COD   | WUHN XMIS ASCG AUCK BARH BJCO BJFS BOR1 BRAZ BRFT
                6  |  COD   | BRST CAS1 CCJ2 CHTI CKIS CPVG DAEJ GLSV GRAC GRAS
                6  |  COD   | HOFN HYDE INVK KERG KRGG MANA MATE MAYG MCIL NIST
                6  |  COD   | NTUS NYA1 PARC PDEL PERT POVE REYK SAMO SAVO SGOC
                6  |  COD   | SOFI STK2 SUWN SYOG THTI TLSE TRO1 TSKB UFPR WARK
                6  |  COD   | WTZR WUHN XMIS
                6  |  EMR   | AREQ MDVJ YAKT
                6  |  ESA   | AREQ NNOR AREQ NNOR
                6  |  GFZ   | 28 MKEA MKEA
                6  |  GRG   | 5 5 KIT3
                6  |  JPL   | MCM4

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

 6. The following orbit solutions were excluded from the combination because they
    were biasing the weighted average (generally indicated by long arc RMS). They
    were still used for statistics computation.
    
               Day | Centre | PRN list
               ----+--------+---------------
                1  |  GFZ   |  18

 7. Velocity changes were estimated to alleviate the effects of modeling problems,
    experienced by all centres,in the Long Arc (LA) process.
    
             Velocity changes per day and affected satellites:
    
               Day |  0 |  1 |  2 |  3 |  4 |  5 |  6 |
           --------+----+----+----+----+----+----+----+
           PRN G01 |    |    |    |    |  4 |    |    |

 8. Starting 5-Nov-2006 (GPS Week 1400, day 0, MJD 54044) until 16-Apr-2011 (GPS
    Week 1631, day 6, MJD 55667) all IGS products, including the IGS combined
    orbits, are based on the IGS realization of the ITRF2005 reference frame
    (IGS05). For more information see IGSMAIL #5447. The IGS05 frame is also the
    basis for the homogeneously reprocessed IGS products from GPS Weeks 730 to 1459
    (1994-2007); see IGSMAIL #6136.
    
    Starting 17-Apr-2011 (GPS Week 1632, day 0, MJD 55668) all IGS products, are
    based on the IGS realization of the ITRF2008 reference frame (IGS08). For more
    information see IGSMAIL #6354.
    
    Starting 07-Oct-2012 (GPS Week 1709, day 0, MJD 56207) all IGS products, are
    based on the updated IGS08 frame (IGb08). For more information see IGSMAIL
    #6663.
    
    Starting 29-Jan-2017 (GPS Week 1934, day 0, MJD 57782) all IGS products,
    are based on the IGS realization of the ITRF2014 reference frame (IGS14).
    For more information see IGSMAIL #7399.
    
    Starting 17-May-2020 (GPS Week 2106, day 0, MJD 58986) all IGS products,
    are based on the updated reference frame (IGb14).
    For more information see IGSMAIL #7921.

 9. Small rotations were applied to all the AC orbit and ERP values in order to
    align them to the current IGS reference frame. These RX, RY and RZ rotations
    were estimated in the IGS SINEX combination process, performed by the IGS
    Reference Frame Coordinator at the Institut Geographique National (IGN).
    Starting on 19-Aug-2012 (GPS Week 1702; MJD=56158), ACs began contributing
    products based on 1d SINEX integrations. As a result, the SINEX combinations
    are now done daily instead of weekly, and the associated daily rotations are
    applied here to the orbits and ERPs. The estimated 7 transformations, from
    which only the 3 rotations are applied to the orbit and ERP values, are:
    
            |     |    DX     DY     DZ      RX     RY     RZ     SCL
     Centre | Day |   [mm]   [mm]   [mm]   [uas]  [uas]  [uas]   [ppb]
     -------+-----+---------------------------------------------------
       COD  |   0 |    -.1     .3     .4      16      8     -3    -.09
       EMR  |   0 |    5.1    3.9    7.4       6      4    -23     .14
       ESA  |   0 |    -.7   -1.2     .0       6      8     36    -.18
       GFZ  |   0 |    -.2    -.0     .1      17      3      1    -.0 
       GRG  |   0 |    3.7   -3.0   -6.3      -4     -5    -28    -.08
       JPL  |   0 |    5.9   -6.3    5.9       8      9     11    -.24
       MIT  |   0 |   -1.4    2.5    3.2       9     -3      8     .14
       NGS  |   0 |    7.5   -8.0    5.3     -55    -55     11     .16
       SIO  |   0 |    -.2    1.3    9.0      -5    -72      2    -.06

       COD  |   1 |     .1    -.1     .4       4      2      2    -.07
       EMR  |   1 |   -3.0    1.4   -2.2      -1     -2      2    -.07
       ESA  |   1 |    -.9    -.8    -.9     -20      8     13    -.31
       GFZ  |   1 |     .6    -.3     .1      -2    -13      1    -.13
       GRG  |   1 |    2.0   -3.5  -18.5      -5    -16    -15    -.08
       JPL  |   1 |    3.3   -2.5    3.5      -1     -7      4    -.35
       MIT  |   1 |   -1.2    3.0    -.7      -6      7     -3     .05
       NGS  |   1 |    3.6   -4.2   10.9     -32    -36      1    -.01
       SIO  |   1 |   -5.2    1.8    3.0     -10     -1     68    -.12

       COD  |   2 |     .1    -.1     .5       1      0      2    -.14
       EMR  |   2 |   -4.0   15.0    9.2     -16     -6     -1     .0 
       ESA  |   2 |    -.9   -1.4    -.7     -17      2     48    -.27
       GFZ  |   2 |     .2    -.2     .2       7     -3      3    -.06
       GRG  |   2 |    -.5   -3.8  -14.6       5    -15    -32    -.01
       JPL  |   2 |     .9    -.1    5.4      -1      4      2    -.24
       MIT  |   2 |   -4.5    4.5     .6       3     -6      1     .08
       NGS  |   2 |     .4   -5.7    9.0     -46     -1    -16    -.14
       SIO  |   2 |   -5.1    3.5    6.2      19    -26     69    -.14

       COD  |   3 |    -.3     .2     .5       5     10     -4    -.14
       EMR  |   3 |   -8.8    3.7     .3     -23     -9     11     .06
       ESA  |   3 |    -.7   -1.3   -1.4     -22     -4     30    -.26
       GFZ  |   3 |     .2    -.1    -.3      19      0     10    -.08
       GRG  |   3 |    -.1   -2.6  -21.1       0     -1    -32    -.01
       JPL  |   3 |    5.8   -1.8    6.7      -5      4      2     .04
       MIT  |   3 |    -.8    1.4    2.5      12      2      7     .07
       NGS  |   3 |   -2.5   -6.9    2.1     -48     22    -20    -.10
       SIO  |   3 |   -3.1     .9    7.3      -6    -28     56    -.18

       COD  |   4 |     .1     .1     .3       3     -1      4    -.14
       EMR  |   4 |   -3.9   -1.0     .2     -12    -23     -8    -.05
       ESA  |   4 |    -.5   -1.2    -.4      -6      5     17    -.21
       GFZ  |   4 |    -.4     .3    -.0       6      6     -1     .05
       GRG  |   4 |    2.5    -.7   -3.3       6     -8    -23     .05
       JPL  |   4 |    2.7    -.1    5.9       1      9    -14    -.15
       MIT  |   4 |    1.0    5.0    2.9      11    -11    -10     .06
       NGS  |   4 |    7.5    3.3    8.4      13    -56     11     .08
       SIO  |   4 |     .8    5.5   13.5      48   -139    113    -.11

       COD  |   5 |    -.1     .2     .2       5      1      3    -.14
       EMR  |   5 |    4.6    4.6    6.3     -22    -17    -23     .02
       ESA  |   5 |    -.6   -1.2    -.5     -10     11     41    -.20
       GFZ  |   5 |    -.0    -.2    -.2      10      2      6    -.13
       GRG  |   5 |    1.3   -2.4   -1.6       2    -14     -5    -.03
       JPL  |   5 |    5.7   -2.0    6.6      -4     17     -7    -.14
       MIT  |   5 |     .3    2.6    7.2       0     -7     17     .05
       NGS  |   5 |    8.4   -1.3    7.9     -22    -49     17    -.04
       SIO  |   5 |    1.5    2.4   18.5      22   -175    124    -.10

       COD  |   6 |    -.1    -.0     .1       0      4      1    -.12
       EMR  |   6 |     .2    1.1    5.2     -19     -7    -15    -.07
       ESA  |   6 |    -.8    -.9    -.4     -19     -7     36    -.24
       GFZ  |   6 |    -.1    -.2    -.2       6      8     -1    -.08
       GRG  |   6 |    2.1   -1.1    -.9      12    -15    -32     .02
       JPL  |   6 |    5.0   -4.3    6.2      -1      6    -11    -.14
       MIT  |   6 |     .3    1.9   10.1     -10     -7     14     .07
       NGS  |   6 |    8.3   -4.5    2.5     -45    -36     14     .16
       SIO  |   6 |    1.7    3.8   18.6      44   -186    134    -.20


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

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


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

Most combination statistics are with respect to the combined orbits and
consist of seven parts. The first, Table 1, summarizes all statistics for
the week. It contains means and standard deviations over the week of
satellite ephemeris and clock correction transformation parameters for
each centre (Table 1.2208.a). It also displays the computed satellite
position sigmas for the combined orbits (Table 1.2208.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 2.2208.[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 3.2208.[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 5.2208.0-6). 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 2208 summary.                       (May 01, 2022 - May 07, 2022)

Table 1.2208.a   GPS week: 2208   MJD: 59700.000-59706.000

         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  684|    0     0     0    11    12     9  -.01    8    7 |    -759     279      5     76
        |    0     0     1     9    15    17   .02           |     211     495
emr   80|   -3     4     3    33     9    -3   .12   14   13 |  206820    -201     15    115
        |    1     3     2     7    11    17   .03           |     973     473
esa  149|    0     0    -1     9     0    -2  -.05    8    8 |    -946     403      7     81
        |    0     0     1    14    15    14   .02           |     317     440
gfz  244|    0     0     1    21     5   -17   .08   14   12 |      21     186     12     71
        |    1     0     2    14     8    15   .03           |     253     270
grg  109|    2    -1    -4    16    22    -6  -.09   11   10 |      67      69      9    137
        |    0     1     5     9     9    39   .03           |      96     113
igr  n/a|    0     0    -1    12     5   -12   .01    5    5 |     663    -164     11    100
        |    0     0     1     9     6    11   .01           |     926     530
jpl   80|    0     0     3    15     6   -12   .16   10   10 |    -933     -46      8     84
        |    0     0     1    15    13    13   .03           |     775     598
mit  363|    0     0     0     5     1   -27  -.03    9    8 |    -789    -155     35   1663
        |    0     0     1    11    14    60   .02           |    1263     533
ngs  206|    1     0     3    14    22   -20  -.04   10   10 |    -673     135    844   1786
        |    0     0     2    17    20    11   .03           |     152     150
sio  538|    0     0     0  -105   -92    62  -.04   10    9 |     ---     ---    ---    ---
        |    0     0     0    32    36    38   .01           |     ---     ---


Table 1.2208.b   GPS week : 2208   MJD: 59700.000-59706.000   

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



Table 2: Daily transformation of each centre to the combined IGS orbit and
         clocks for each day of the week. The transformation displayed is the
         result of the combination after the AC orbits were pre-aligned using
         the SINEX rotations from above. Prior to Wk 1702, AC ERP rotations
         used in the pre-alignment were also displayed.
         WRMS - RMS weighted by the centres SP3 header accuracy codes.
         STA  - Number of stations in the daily solutions.
   
Table 2.2208.0   GPS week: 2208   Day: 0   MJD: 59700.000                            

CENT STA|   DX    DY    DZ    RX    RY    RZ   SCL  RMS  WRMS|    TOFT   TDRFT   SDEV    RMS
        |  [mm]  [mm]  [mm] [uas] [uas] [uas] [ppb] [mm] [mm]|    [ps]  [ps/d]   [ps]   [ps]
--------+----------------------------------------------------+------------------------------
cod  670|    0    -1     0    29    35    37   .01    7    7 |    -845     566      6     82
emr   80|   -3     9     2    23     0    32   .11   13   13 |  207255     265     14    127
esa  150|    0     0    -1    -1     9    19  -.05    8    8 |   -1046     963      7     83
gfz  237|    0     0     0     8    21    -8   .05   16   13 |      78     -25     14     77
grg  107|    2    -3    -5     6     6    47  -.07   11   11 |      27      80      9    130
igr  n/a|    0     0    -2     2     9     0   .00    5    5 |     710     512     11     93
jpl   80|   -1     0     6    -4    17    13   .11    9    9 |    -957     440      9     90
mit  363|    0     0    -1    20    -2   -92  -.01    9    7 |   -1061     430     31   1923
ngs  212|    0    -1     0    18   -12   -17  -.03    9    9 |    -565     144    783   1521
sio  548|    0     0     0   -89  -105   -12  -.04   10    9 |     ---     ---    ---    ---

Table 2.2208.1   GPS week: 2208   Day: 1   MJD: 59701.000                            

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  679|    0    -1     0     7   -16    16  -.03    8    8 |    -475    -445      6     78
emr   80|   -3     5     3    41    30     4   .09   14   14 |  207424     287     15    143
esa  150|    0     0     1    31    10     3  -.06    9    9 |    -984     238      9     83
gfz  240|    0     0     3    50    -7   -12   .06   17   15 |    -267     626     14     75
grg  107|    2    -2   -12    34    22    46  -.06   11    9 |      53      56      9    126
igr  n/a|    0     0     1    24    12   -19   .00    5    5 |    1125     304     12    103
jpl   80|    0     0     3    23    22    -3   .12    9    9 |    -742     394      8     83
mit  363|    0     0    -2   -12    -6  -104  -.02   10    9 |     113     577     43   1879
ngs  196|    2     0     7    10    30     1  -.09   12   11 |    -551     287    841   1548
sio  514|    0     0     0  -136   -80    53  -.03   10    9 |     ---     ---    ---    ---

Table 2.2208.2   GPS week: 2208   Day: 2   MJD: 59702.000                            

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  682|    0     0     0    13    20    14  -.00    7    7 |   -1017    1014      5     76
emr   80|   -3     9     6    34    -2    -5   .10   15   15 |  207773    -364     15    140
esa  150|   -1     0    -1    -3   -21     5  -.03    8    8 |    -411    -257      6     81
gfz  249|    0     0     0    23     4    -7   .09   13   10 |     359    -174     11     64
grg  107|    2    -1    -6     7    13     0  -.13   10    9 |     149     -53      9    144
igr  n/a|    0     0     0     9     5   -15   .00    5    4 |    1626    -295     11     74
jpl   80|    0    -1     2    23   -17   -12   .16    9    9 |    -283     -40      8     75
mit  363|    0     0    -2     2     0   -40  -.03    9    8 |     528    -318     26   1514
ngs  204|    1    -1     4    36    35   -24  -.04    9    9 |    -687      75    632   1542
sio  543|    0     0     1  -106   -44    60  -.05   10    8 |     ---     ---    ---    ---

Table 2.2208.3   GPS week: 2208   Day: 3   MJD: 59703.000                            

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  693|    0     0     0    10    11     4  -.01    8    7 |    -880     192      6     78
emr   80|   -6     5     6    38     4   -17   .13   14   14 |  207574    -322     18     94
esa  150|    0     0    -1    18    -9     3  -.07    9    8 |    -701     392      7     82
gfz  248|    1     1     4    30     2    -6   .07   13   11 |     240     273     13     76
grg  113|    2    -1   -10    20    26   -26  -.09   10    9 |     202     278      9    160
igr  n/a|    0     0     0    23    -7    -1  -.01    4    4 |    1595    -300     12    117
jpl   80|    0    -1     4    15     4   -19   .18   11   11 |     -32    -124      8     75
mit  363|    0     0    -1     2   -15   -24  -.02    9    8 |    -254    -272     40   1587
ngs  209|    1    -1     3    17    32   -17  -.01   10    9 |    -979     382   1013   2194
sio  533|    0     1     0  -129   -48    55  -.02   10    9 |     ---     ---    ---    ---

Table 2.2208.4   GPS week: 2208   Day: 4   MJD: 59704.000                            

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  688|    0     0    -2    -1     9     2  -.01   10    7 |    -626     126      6     75
emr   80|   -3     0     2    37     3    -9   .10   15   14 |  206710    -599     16    138
esa  149|    0     0    -3    16     4   -15  -.04   10    8 |    -958     351      8     87
gfz  249|    0     0     2    15     5   -13   .13   12   11 |      48     176     11     67
grg  109|    3     0     0    15    32   -35  -.10   11   10 |     128     100      8    126
igr  n/a|    0     0    -1    20     8    -2   .01    5    5 |     693    -652     12    104
jpl   80|   -1    -1     4    37    -3   -16   .16   13   13 |    -617    -732      9     96
mit  363|   -1     0     0     5     7   -22  -.04   10    8 |    -205    -485     46   1614
ngs  209|    2     0     3    34    45   -23  -.03   12   11 |    -567      12    924   1908
sio  546|    0     1     0  -116  -107    88  -.03   10    8 |     ---     ---    ---    ---

Table 2.2208.5   GPS week: 2208   Day: 5   MJD: 59705.000                            

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  688|    0     0     0    19    17    15  -.03    7    7 |    -937     635      6     73
emr   80|   -1     2     1    35    19   -21   .15   12   12 |  205794    -910     15     72
esa  150|    0    -1    -3    12    22   -12  -.02    9    9 |   -1411     975      7     79
gfz  240|    0     0    -2    10     7   -28   .09   12   10 |    -347     390     12     71
grg  113|    2    -1     0    19    29   -31  -.08   11    9 |     -39     -62      9    136
igr  n/a|   -1     0    -3     4     5   -22   .02    5    5 |    -250    -936     12    101
jpl   80|    0    -2     3    13     1   -21   .16   10   10 |   -1659    -916      8     79
mit  363|    0     0     0    -1    -5    21  -.07    9    8 |   -1419    -973     35   1520
ngs  206|    0     0     2    -5     3   -28  -.06   11   10 |    -745      94    977   2215
sio  540|    0     1     0  -118  -128    88  -.06   11   10 |     ---     ---    ---    ---

Table 2.2208.6   GPS week: 2208   Day: 6   MJD: 59706.000                            

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  688|    0     0    -2     4     8   -21  -.03    7    7 |    -536    -133      6     75
emr   80|   -3     1     0    20    10    -4   .17   12   12 |  205212     235     15     92
esa  150|    0     0    -2    -7   -11   -21  -.08    8    8 |   -1116     159      7     77
gfz  247|    2     1     1    10     1   -47   .11   14   14 |      37      39     14     69
grg  113|    3     0     0    10    28   -45  -.10   10    9 |     -50      84     10    137
igr  n/a|    0     0    -3     2     7   -29   .02    5    5 |    -856     218     12    110
jpl   80|    0     0     2    -3    16   -27   .19   10   10 |   -2242     651      8     90
mit  363|    0     0     0    18    29    69  -.05    9    8 |   -3225     -47     25   1605
ngs  210|    0     0     2    -8    21   -34  -.03    9    9 |    -619     -44    744   1576
sio  542|    0     1     0   -39  -135   106  -.05   11    8 |     ---     ---    ---    ---

       
       
Table 3: Daily fit for each satellite and each centre resulting from weighted
         average combination and from long arc orbit dynamics (7-day). The
         first IGS column gives resulting satellite accuracy measures found in
         SP3 header. The last IGS column gives the RMS fit of the IGS orbit
         when processed through the 7-day arc evaluation.

         "E"    stands for eclipsing satellites (earth).
         "M"    stands for eclipsing satellites (moon).
         "X"    stands for excluded from the statistics but included in IGS orbit.
         "T"    stands for Total long arc orbit RMS for all satellites.
         "NE"   stands for long arc orbit RMS for Non-Eclipsing satellites only.
         "MEDI" stands for median of the centre's satellite RMS.
         "MD"
         Units: mm.

Table 3.2208.0   GPS week: 2208   Day: 0   MJD: 59700.000                            

        Weighted Average                                            Orbit Dynamics (7 days)
 PRN  |  cod  emr  esa  gfz  grg  igr  jpl  mit  ngs  sio  IGS |   cod  emr  esa  gfz  grg  igr  jpl  mit  ngs  sio   IGS
------+--------------------------------------------------------+---------------------------------------------------------
   1E |    8   14    8   34    8    5   10   12   13   11    4 |   135  134  132  142  135  134  118  140  133  136   135
   2E |    8   13   11    7    9    5    7    9    8   11    3 |    27   32   30   27   30   28   28   27   27   28    27
   3  |    7    9    6   11   12    4    8    5    7   10    3 |    23   26   22   22   20   21   26   19   20   23    21
   4  |    5   16    7    8   10    3   15    8    6   10    3 |    66   63   65   68   66   66   64   66   68   65    65
   5  |    7   10    8   12   11    6    8    6    6   11    3 |    39   37   38   39   41   39   41   36   34   35    37
   6E |    5    9    9   24   14    5    9    5   10    8    3 |    55   47   55   61   61   57   48   59   59   57    57
   7  |    4   14   12    9   15    4    7   10   10   11    3 |    19   20   16   21   23   18   18   21   23   22    18
   8  |    9   11    7    9   11    4    8    8    7    6    3 |    21   26   23   23   23   21   25   21   22   22    21
   9  |    8   11    7   10    8    3   10    4    9    7    3 |    20   29   22   19   19   21   27   20   22   20    21
  10M |    6    8    8   10    9    5    7    6    7   11    2 |    46   50   47   50   50   47   49   45   45   48    47
 X11E |   13   21   10   34   17    8   11   19   18  ---    6 |    54   55   56   69   50   56   54   53   56  ---    53
  12  |    6   16    7    8    9    4    8    9    8   12    3 |    28   30   24   27   27   28   30   29   29   31    27
  13  |    7   11    7   11    9    7   10    8    5   16    3 |    18   25   18   22   20   19   24   23   22   26    20
  14  |    9   13    9   13   10    6    8    6   15   10    3 |    65   64   63   65   69   63   64   64   68   66    65
  15  |    5   10    8   12    8    7    8   12    9   13    3 |    37   42   42   43   36   39   42   40   37   38    39
  16M |    9   20    6   10   13    6    8    8   11   10    3 |    22   26   22   24   17   21   20   17   21   18    19
  17  |    6   13    6   14    9    4    9   10   11    7    3 |    46   49   42   47   48   45   47   45   50   45    45
  18E |    9   25   12   46   15    8   15   18   14   17    6 |   112  115  112  108  109  113  113  120  116  118   113
  19  |    7   14    5   16   11    4    9    9    8    6    3 |    27   33   25   30   27   25   28   27   26   27    26
  20  |    8   10    6   15    9    4    7    7    5   10    3 |    24   32   24   29   25   25   27   26   28   31    25
  21E |    8    9    7   15   10    4    8    7   11    6    3 |    24   24   25   30   24   25   22   24   26   25    24
  22M |    8   13    5    7   10    4    5    8    8   10    3 |    22   26   20   22   15   21   21   20   19   24    19
  23  |    7   10    9   17   11    4    8    9    9   11    3 |    66   66   62   67   62   65   65   66   71   69    65
  24  |   10   12    8   13   10    5   11    9    9    8    3 |    27   23   23   26   24   22   23   25   22   26    23
  25  |    7   16    8    8   11    4    8   11    6   12    3 |    20   29   23   21   19   19   23   21   20   26    21
  26M |   11   11    8   11   10    4    7    7   10    8    3 |    25   23   23   24   24   22   24   19   25   22    21
  27M |    8   10    7    8   15    3    7    8    9    6    3 |    21   27   21   23   24   21   26   20   21   24    21
 X28  |    7   12    8   16    9    8    9    8   12  ---    3 |    18   24   17   20   20   17   23   22   20  ---    18
  29M |    6   16    5    8   10    4    9    6    9   10    3 |    27   30   24   27   28   25   29   26   26   29    26
  30  |    6   14    8   13   17    4   12    7   11   12    3 |    24   22   24   25   27   23   22   21   23   22    21
  31  |    7   15    7   14   16    6    7    8    8   11    3 |    30   32   28   31   31   30   31   30   34   32    29
  32M |    7   14    7   10    8    4   10    7    8   12    3 |    25   35   30   23   29   27   34   26   29   27    27
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |    7   13    8   16   11    5    9    9    9   10      |T   37   40   37   39   38   37   38   38   38   39    37
 WRMS |    7   13    8   13   11    5    9    7    9    9      |NE  32   35   31   33   33   31   34   32   33   34    31
 MEDI |    7   13    7   11   10    4    8    8    9   10      |MD  27   30   24   27   27   25   28   26   26   27    26

Table 3.2208.1   GPS week: 2208   Day: 1   MJD: 59701.000                            

        Weighted Average                                            Orbit Dynamics (7 days)
 PRN  |  cod  emr  esa  gfz  grg  igr  jpl  mit  ngs  sio  IGS |   cod  emr  esa  gfz  grg  igr  jpl  mit  ngs  sio   IGS
------+--------------------------------------------------------+---------------------------------------------------------
   1E |    9   13    9   43   11    4   10   10   18   11    6 |    93   95   90  105   98   94  117  101   96   97    95
   2E |   10   11   12    8    8    4    8   10    9    8    3 |    20   26   25   21   24   21   22   21   23   26    21
  X3  |    6  ---    7    8    8    4    9    8   10   12    3 |    20  ---   20   19   19   18   24   18   18   23    18
   4  |    7   16    7    6    8    3   15    9   10   12    3 |    47   46   47   48   45   47   45   46   49   47    46
   5  |    6    8    7   11    7    4    8    8   11    8    3 |    25   30   24   29   28   26   30   26   27   31    26
  X6E |    8   10    8   26   16    5  ---    8   14    9    5 |    57   53   56   62   64   59  ---   60   61   58    58
   7  |    6   11   11    9   13    5    7   10   10   11    3 |    18   19   15   19   22   18   19   21   23   24    18
   8  |   10    9    8    9   11    3    8    6    8    7    3 |    18   23   18   17   21   17   24   16   17   19    17
   9  |    7   10    7   10    6    3   10    6    9   10    3 |    17   26   19   13   17   18   26   18   22   16    18
  10  |    7   10    9    7    9    4    6    7    8    9    3 |    37   42   38   38   41   36   40   35   38   39    38
 X11E |   13   22    9   30   18    7   12   22   21  ---    7 |    33   39   37   46   31   31   32   35   36  ---    33
  12  |    8   18    6    9   10    3    9   10   12    6    3 |    23   26   18   24   21   21   24   24   23   26    21
  13  |    7   10    7   11    8    7    9   10    7   13    3 |    18   26   19   22   20   19   25   22   21   27    20
  14  |    9   14    9   10    9    6    8    7   14    7    3 |    42   41   44   41   48   40   43   43   44   46    43
  15  |    6   13    8   12    7    8    7   14   10   13    3 |    21   27   24   27   21   23   25   27   23   25    22
  16  |    7   24    8    9   13    6    9    7   12    8    3 |    18   21   18   19   16   17   18   15   19   19    15
  17  |    7    9    6   10    9    3    9   10   11    9    3 |    37   40   34   38   37   36   38   36   40   38    36
  18E |   10   29   15   62   19   11   15   19   18   15    6 |    70   78   67   71   67   70   73   81   75   76    72
  19  |    8   14    6   11   10    4    9    9   11    9    3 |    23   31   24   29   20   23   25   22   25   27    23
  20  |    8    8    5   12    8    5    8    9   12    9    3 |    18   24   20   21   18   18   21   21   24   23    19
  21E |    9   10    7   12    8    4    7    9   10    8    3 |    18   20   21   25   23   19   18   19   16   21    18
  22  |   10   12    7    6    5    5    5   12   10    7    3 |    17   21   15   18   14   17   17   19   17   24    16
  23  |    8   10    8   14   11    4    7   14    9    9    3 |    45   47   44   48   43   46   47   51   50   51    46
  24  |   13   11    8   10    9    4    9    9   11    8    3 |    20   19   20   17   20   18   19   22   19   24    18
  25  |    7   16    7   13   10    4    7   10   12    8    3 |    18   28   20   23   19   18   21   22   18   24    19
  26  |    8   13    9   14   10    3    9    6   12    5    3 |    19   21   22   22   19   19   21   17   24   21    19
  27  |    7   11    9    7   13    3    8    6   13   11    3 |    19   25   21   20   22   19   24   19   21   23    19
 X28  |   10   12    9   18   10    5   10    7   16  ---    4 |    17   23   18   26   19   18   24   20   20  ---    18
  29  |    7   20    5    9   10    5    7    7   11   10    3 |    24   26   21   23   22   21   22   23   21   26    21
  30  |    9   13    8   12   10    4   11    8   11   10    3 |    21   20   21   21   23   19   21   20   19   22    19
  31  |    9   15    9    9   22    5    6    9   15    9    4 |    22   28   24   28   33   23   26   26   33   29    25
  32  |   11   13   13   10    7    5   10   10    9   10    3 |    19   32   29   18   24   22   30   21   24   23    22
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |    8   14    9   17   11    5    9   10   12   10      |T   28   33   29   31   29   28   31   30   30   32    28
 WRMS |    8   14    9   15    9    5    9    9   11    9      |NE  24   29   24   26   26   24   27   26   27   29    24
 MEDI |    8   12    8   10   10    4    9    9   11    9      |MD  20   26   21   23   22   21   24   22   23   25    21

Table 3.2208.2   GPS week: 2208   Day: 2   MJD: 59702.000                            

        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
------+--------------------------------------------------------+---------------------------------------------------------
  X1E |    5   16    8   33   11    5  ---    9   16   11    5 |   101   96   99  104  101   99  ---  103  100  102   100
   2E |    8   13   12    8    9    4    8   11   10    9    3 |    34   39   38   34   39   36   39   38   41   36    36
   3  |    5   12    5    5    9    3    7    6    7    9    2 |    34   38   34   33   33   33   36   32   34   35    33
   4  |    5   18    4    4    8    4   17    8    7    8    3 |    63   65   59   61   61   60   60   60   65   62    61
   5  |    7    9    8    9    9    4    8    7    7    9    3 |    42   41   40   44   42   42   45   42   39   43    41
  X6E |    9   19   11   22    8    7  ---    9   19   15    5 |    49   60   46   50   47   47  ---   48   42   54    47
   7  |    5   13   10   10   14    5    8    9    9   13    3 |    29   30   26   30   32   28   29   32   31   31    28
   8  |    9    9    7    8   10    4    9    5   10    9    3 |    34   39   34   34   35   32   37   34   36   33    34
   9  |    6   11    7    9    7    4    9    7    6    7    2 |    33   39   30   29   31   30   38   32   34   31    32
  10  |    7   12    8    7    8    5    6    9    8   10    3 |    58   60   57   57   60   57   58   58   58   59    58
 X11E |   12   26   11   25   20   11   12   23   19  ---    7 |    49   52   50   59   51   54   50   55   56  ---    50
  12  |    5   19   10    8    8    4    9    6    8   10    3 |    31   32   29   33   28   30   30   31   31   31    29
  13  |    5   11    7   11    9    6   11    8    8   11    3 |    26   33   26   29   26   27   32   28   30   28    27
  14  |   10   15   11   15   10    8   11    8   14   16    4 |    59   57   53   60   59   55   55   56   56   59    56
  15  |    3   12    7   10    7    6    7   12    8   10    3 |    37   38   38   41   35   37   38   39   35   35    36
  16  |    6   20    6    8   11    5    9    6    8    9    3 |    30   34   29   30   31   29   31   30   32   32    30
  17  |    5   13    5    9    9    4    8    7    9    6    2 |    54   59   54   55   55   56   57   57   54   56    55
  18E |    9   23   15   45   20   10   19   20   15   16    7 |    65   68   63   57   61   62   68   66   64   68    62
  19  |    7   18    5   11    8    5    9    7   10   10    3 |    33   40   33   35   31   34   36   34   33   34    33
  20  |    8   11    6    8    8    4    8    9   10   10    3 |    37   39   35   38   39   38   38   39   38   40    37
  21E |    8   11    8   13   20    5    7    5    7    7    3 |    32   37   35   37   39   34   34   34   33   35    34
  22  |    8   15    6    7    5    3    5    9    8    6    2 |    22   27   21   25   22   22   23   24   25   26    22
  23  |    7   11    9   11   11    5    8   13   11   10    3 |    49   53   47   50   50   49   48   51   54   55    50
  24  |    9   12    7   10    9    4    8    9    7    8    3 |    30   28   31   33   29   30   30   30   28   29    29
  25  |    7   23    7    9    9    3    6    5    9    9    3 |    29   39   31   31   29   28   30   29   29   32    29
  26  |    8   12    7   12    9    3    9    6   10    6    3 |    34   32   34   34   36   33   34   33   34   34    33
  27  |    6   10    6    6   12    4    7    5    9   12    3 |    30   35   32   33   35   30   33   31   32   37    31
 X28  |    9   14    6   10   11    6   10    9   14  ---    4 |    29   32   26   31   28   28   30   31   34  ---    29
  29  |    5   18    6    9    7    4    7    5    9   10    3 |    29   31   27   30   28   27   29   29   30   31    28
  30  |    7   18    7   22   11    4   12    7   12   11    4 |    31   31   31   36   32   30   31   31   30   32    30
  31  |    7   15    6    8   13    3    6    7   10    7    3 |    40   43   38   39   42   39   41   41   42   41    40
  32  |    7   14    7    8    5    4    9    9    6    9    3 |    36   43   35   37   36   36   41   37   36   36    36
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |    7   15    8   13   10    5    9    9    9   10      |T   40   43   39   41   40   39   39   41   41   41    39
 WRMS |    7   15    8   10    9    4    9    8    9    8      |NE  37   40   36   39   37   37   39   38   38   39    37
 MEDI |    7   13    7    9    9    4    8    8    9    9      |MD  34   39   34   35   35   34   36   34   34   35    34

Table 3.2208.3   GPS week: 2208   Day: 3   MJD: 59703.000                            

        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
------+--------------------------------------------------------+---------------------------------------------------------
  X1E |   40   23   10   40   22    8  ---   15   24   13    9 |   115  116  114  113  112  115  ---  115  118  113   113
   2E |    9   13   12    9    7    4    8   11    8   11    3 |    26   32   30   29   28   28   31   30   29   29    28
   3  |    6   12    9    7    8    3    7    7    9    8    2 |    23   28   24   23   22   22   27   22   20   26    22
   4  |    7   18    5    7    8    2   18    9    8    9    3 |    45   45   40   47   40   42   44   43   43   44    42
   5  |    8   11    8    9    8    6    7    7    7    8    2 |    34   34   34   31   37   34   37   32   32   32    33
  X6E |   13  ---   10   33   14    7  ---   15   17   14    7 |    43  ---   44   58   46   44  ---   51   48   51    45
   7  |    7   14    9   12   11    5    7    8    8   11    3 |    25   24   22   28   29   24   25   27   26   29    24
   8  |    8    9    7   11   10    4    9    6    9    8    3 |    23   30   26   27   26   24   28   24   23   24    24
   9  |    8    9    6   10    6    3   10    6    9    7    3 |    22   28   22   21   22   20   29   23   19   23    22
  10  |   10    9    9   10    8    4    4   13    8    9    3 |    34   41   34   33   34   33   36   39   34   35    34
 X11E |   15   25   11   26   17    9   12   23   15  ---    6 |    36   41   41   46   36   36   40   42   36  ---    37
  12  |    6   20    7   11   10    4    9    6   10    6    3 |    25   30   22   28   25   24   28   25   24   26    24
  13  |    7   13    6    8    8    5   10    9    9   12    3 |    20   31   21   24   21   20   29   22   20   22    21
  14  |   10   16   10   12   11    5   11    7   14    9    4 |    55   50   54   58   61   55   51   52   59   58    55
  15  |    5   11    9   11    6    5    7   12   11    8    3 |    39   41   41   42   39   38   40   40   38   37    39
  16  |    6   23    8   10   12    6   12    6   10   10    3 |    22   27   19   23   19   19   20   19   18   23    19
  17  |    8   13    7    7    9    3   10    8   10    9    3 |    31   35   30   34   32   31   35   32   30   32    31
  18E |   15   22   23   39    9    8   30   19   23   15    8 |    57   62   61   53   54   56   68   55   53   56    55
  19  |    8   14    7    8   11    3   10    6   10    8    3 |    26   32   25   28   24   26   29   24   26   27    25
  20  |    8   10    7    8    9    3    6   11    9    9    3 |    25   32   23   26   23   24   27   30   26   30    25
  21E |    8   12   10   10   19    4    9    6   10    9    3 |    22   24   24   23   22   23   23   23   20   25    21
  22  |    6   10    6    9    6    3    7    9    6    9    2 |    24   26   20   27   24   23   25   24   25   26    23
  23  |    8   13    8   12   11    5    7   13    8    8    3 |    47   47   44   48   45   44   47   48   46   48    45
  24  |    9   12    8    8   10    5    8   12    8    8    3 |    30   26   29   27   31   27   29   29   24   29    27
  25  |    9   22    9   21    9    4   10    9    8    8    4 |    28   40   29   35   27   28   30   32   30   31    29
  26  |    7   12    7   21    8    2    9    7   11    8    3 |    23   26   23   30   23   23   25   22   24   26    23
  27  |    7    8    6   12   12    6    8    6    7    9    3 |    23   28   24   23   25   22   26   23   22   27    23
 X28  |    8   16    6   12   10    5   12    8   10  ---    3 |    25   30   22   22   24   24   29   23   26  ---    23
  29  |    6   16    7   10    8    4    6    7    6   11    3 |    28   30   24   28   27   26   29   28   30   26    27
  30  |    9   19    6   10   11    3   12    7   10    8    3 |    29   28   28   26   32   26   28   27   24   27    26
  31  |    6   15    7    7   15    4    7    8   11   12    3 |    20   28   21   25   24   23   24   23   28   27    22
  32  |    7   10    5   11    8    5    9    8    6   14    3 |    23   32   24   22   25   24   31   24   24   27    24
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |    8   14    9   13   10    4   11    9   10   10      |T   32   36   32   34   33   32   32   33   32   34    32
 WRMS |    7   14    8   11    9    4   11    8    9    9      |NE  30   33   29   31   30   29   32   30   29   31    29
 MEDI |    8   13    7   10    9    4    9    8    9    9      |MD  26   31   25   28   27   26   29   27   26   27    25

Table 3.2208.4   GPS week: 2208   Day: 4   MJD: 59704.000                            

        Weighted Average                                            Orbit Dynamics (7 days)
 PRN  |  cod  emr  esa  gfz  grg  igr  jpl  mit  ngs  sio  IGS |   cod  emr  esa  gfz  grg  igr  jpl  mit  ngs  sio   IGS
------+--------------------------------------------------------+---------------------------------------------------------
   1E |   23   22   14   21   18   12   23   17   22   18    7 |   190  190  185  194  191  186  115  194  193  189   190
   2E |    7   12   13    8   10    5    9   11    9   10    3 |    20   24   26   21   21   21   24   23   23   24    21
   3  |    7   11    6    9    8    4   10    5   10    6    2 |    19   22   19   22   16   18   24   18   20   22    18
   4  |    6   18    4    6    8    4   19    8    8    9    3 |    52   50   51   51   52   50   50   51   55   53    51
   5  |    6   10   11   10    8    5    8    8    7    8    3 |    31   32   29   31   28   30   33   27   28   30    29
   6E |    9   13   10    9   19    5   15    8   16    7    4 |    30   39   31   34   44   32   36   37   37   36    33
   7  |    5   11    7   10   11    5    8    9   12    8    3 |    19   18   17   24   22   20   22   23   23   24    19
   8  |    7   10    6   10   10    5    9    7    8    5    2 |    19   21   19   20   19   18   23   18   18   22    18
   9  |    8   11    6   10    6    3   12    9    6    9    3 |    17   27   20   17   15   18   28   16   18   17    18
  10  |    9   14    9    8    9    5    8   11   12   11    3 |    67   68   67   69   66   67   68   71   68   73    68
 X11E |   14   22   13   31   24    7   14   26   15  ---    7 |    27   30   28   41   24   26   27   38   26  ---    26
  12  |    6   21    8    9   10    3   10    7    9    9    3 |    21   24   19   23   22   21   24   21   20   27    21
  13  |    6   11    6   12    8    5   10    9    6    8    3 |    16   25   18   20   18   19   27   19   19   19    18
  14  |    9   14   12   13   10    6   10    7   15    9    3 |    48   44   44   48   48   45   45   46   48   49    46
  15  |    5   12    9    9    7    5    9   11    7    9    3 |    30   35   32   32   26   30   32   30   27   31    29
  16  |    6   20    8   11   10    7   11    7   15    8    3 |    21   22   18   23   17   18   20   18   17   21    17
  17  |    5   10    7   10    7    4   10    7    8   10    2 |    41   44   40   44   43   42   45   44   45   46    42
  18E |   30   31   32   26   18   10   39   22   29   23   10 |    98  104  103  101   92   99  104  100   98  100    97
  19  |    5   11    8   14    8    4    7    8    9    7    3 |    19   25   19   29   18   20   23   17   22   24    20
  20  |    9   10    8   12    8    5    8    9    8   10    3 |    18   21   15   16   19   17   20   21   20   25    17
  21E |    9   21   10   10   16    5   10    6   11    5    3 |    16   24   22   21   21   18   19   16   18   21    17
  22  |    6    8    7   10    7    4    7    6   11   11    3 |    19   20   18   25   16   19   20   18   18   26    18
  23  |   10   12    7    9   11    6    9   17   11   10    4 |    53   53   52   54   56   55   54   53   59   54    53
  24  |    7   10    7   11   12    5   11    9    9    8    3 |    23   23   23   25   21   22   22   23   18   24    21
  25  |    7   17    8   10   10    2    7    7    7    9    3 |    21   29   21   19   20   19   23   20   17   25    20
  26  |    7   11    8   16   10    3    8    6   14    7    3 |    21   21   23   26   22   21   23   19   22   24    20
  27  |    6    8    7    9   11    5    8    6    9    8    2 |    18   19   19   19   18   17   21   17   15   25    17
 X28  |    8   12    9   15   10    8    8    8    9  ---    3 |    17   20   17   22   18   17   22   18   19  ---    17
  29  |    7   15    6    9   11    4    9    8    7   13    3 |    22   23   18   20   22   20   24   20   20   22    20
  30  |    6   15    6   18    9    4   13    7   13    9    3 |    21   22   23   26   23   21   24   22   22   23    21
  31  |   10   12    6   10   17    5    8    7   14   12    3 |    22   24   19   26   22   21   24   22   27   29    21
  32  |    6   12    6    9    9    4   10    6    9   13    3 |    17   27   19   21   18   18   28   19   18   24    18
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |   10   15   10   12   11    5   13   10   12   10      |T   33   36   33   36   33   33   34   34   34   37    33
 WRMS |    7   14    8   11   10    5   13    8   11    8      |NE  26   29   26   28   26   26   29   26   27   30    26
 MEDI |    7   12    8   10   10    5    9    8    9    9      |MD  21   24   21   25   22   21   24   21   22   25    20

Table 3.2208.5   GPS week: 2208   Day: 5   MJD: 59705.000                            

        Weighted Average                                            Orbit Dynamics (7 days)
 PRN  |  cod  emr  esa  gfz  grg  igr  jpl  mit  ngs  sio  IGS |   cod  emr  esa  gfz  grg  igr  jpl  mit  ngs  sio   IGS
------+--------------------------------------------------------+---------------------------------------------------------
   1E |    9   17    8   17   22    8   16   12   13   14    5 |    95   94   91   95  103   92   73   98   98   93    94
   2E |    7    8   11    7    7    4    7   10    8   11    3 |    22   25   26   24   22   23   22   25   23   28    22
   3  |    7    8    5    9    9    3    8    4    9    7    2 |    19   22   21   22   19   20   25   16   20   22    19
   4  |    6   17    5   10   10    4   18    8    5    8    3 |    48   45   47   48   49   46   48   48   47   47    47
   5  |    6   10   10   10    7    6    8    7    8   11    3 |    25   26   23   27   25   25   27   24   24   28    24
   6E |    9    8    8   20   15    6    7   10   12   11    4 |    36   31   34   37   38   34   24   35   37   38    34
   7  |    4   10    9   10   12    5    6    9   10    9    3 |    19   21   18   21   21   18   19   22   20   24    19
   8  |    7    8    7   10    9    3    8    5    9    6    2 |    17   20   21   17   20   18   23   16   18   19    17
   9  |    5    9    6   11    6    3    9    6    5   10    2 |    17   27   19   16   16   18   28   16   16   17    18
  10  |    5    8    6    7   11    5    7   10    6    7    2 |    27   31   28   27   31   28   30   24   28   31    28
 X11E |   24   18   13   35   21    9   18   27   27  ---    8 |    34   33   34   55   29   37   29   47   47  ---    34
  12  |    8   15   11   10    8    5    8    8    8   14    3 |    25   26   20   24   24   22   24   26   22   30    23
  13  |    7    9    7    9   10    5    9    8    8   12    3 |    15   28   17   20   19   17   25   17   19   19    18
  14  |    9   15    9   11    9    5   11    8   11   10    3 |    37   44   40   40   42   40   41   44   41   44    40
  15  |    5   12    9    9    7    5    7   11   11   11    3 |    28   31   31   33   23   30   29   27   28   29    27
  16  |    8   19    9   11   12    8    9    7   13   16    4 |    17   18   19   20   19   19   18   18   23   23    17
  17  |    8    8    7   10    9    3    7    7    9   15    3 |    34   35   30   34   37   34   35   31   37   28    32
  18E |    8   21   22   28   12   10   29   24   31   24    8 |    73   81   74   69   72   71   83   84   72   82    74
  19  |    8   11    6   10    9    4    5    8    9   10    3 |    23   25   22   28   23   24   24   21   27   24    22
  20  |    6    9    7   11    9    4    7    8    5   10    3 |    20   23   19   21   23   20   22   22   20   24    19
  21E |    8   10    9   12   15    5    9    7    9    9    3 |    18   24   25   23   24   22   23   20   20   23    20
  22  |    7    9    5    8    6    4    6    8    7    7    2 |    20   19   20   21   20   18   22   21   20   24    20
  23  |    8   11    7    8   11    6    8   14   11   12    3 |    47   50   47   48   47   46   48   51   48   54    48
  24  |   11    9    8    7   11    6   11    9    9   13    3 |    25   20   21   21   21   20   21   22   17   25    20
  25  |    9   12    7    9    9    4    8    5    8   10    3 |    21   26   20   18   20   18   22   18   17   22    19
  26  |    9   10    9   17   10    5    8    7   11   11    3 |    21   20   23   27   25   21   23   21   23   27    21
  27  |    6    9    6   13   11    5    8    8   10   11    3 |    18   21   20   20   20   18   21   19   19   24    18
 X28  |   12   13    8   16   10    7    9   10   12  ---    4 |    21   22   16   24   21   17   20   22   22  ---    19
  29  |    6   15    6    8    7    5    6    6   12   10    3 |    27   25   21   26   23   23   24   24   23   25    23
  30  |    5   11    6   14    9    4    9   10   11    8    3 |    21   21   21   21   22   20   21   22   19   22    19
  31  |    8   11    7    8   14    4    7    8    7    7    3 |    36   37   32   37   39   33   35   37   35   40    35
  32  |    8   10    4   10    6    3   10    7    7   11    3 |    16   27   18   18   16   17   27   14   16   20    17
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |    7   12    9   12   11    5   10    9   11   11      |T   28   31   28   30   29   28   29   29   29   31    28
 WRMS |    7   12    9   10    9    5   10    8   10   10      |NE  26   28   25   27   26   25   28   26   26   28    25
 MEDI |    8   10    7   10    9    5    8    8    9   10      |MD  22   26   21   24   23   22   24   22   23   25    21

Table 3.2208.6   GPS week: 2208   Day: 6   MJD: 59706.000                            

        Weighted Average                                            Orbit Dynamics (7 days)
 PRN  |  cod  emr  esa  gfz  grg  igr  jpl  mit  ngs  sio  IGS |   cod  emr  esa  gfz  grg  igr  jpl  mit  ngs  sio   IGS
------+--------------------------------------------------------+---------------------------------------------------------
   1E |    8   14    6   22   18    7   12   13   10   16    4 |   118  115  116  116  122  118  101  119  120  119   118
   2E |    8    8   10    8    7    4    7   12    8   15    3 |    30   31   33   29   29   30   30   30   30   31    29
   3  |    5    8    5    8    8    3    9    6    5    6    2 |    31   32   31   30   29   30   34   26   26   29    29
   4  |    5   17    5    9    9    3   20    8    8    8    3 |    68   65   66   68   69   66   66   66   70   68    67
   5  |    5   11    9    9    7    5    7    7    8    6    2 |    47   46   45   46   49   46   47   42   47   46    45
   6E |   10   12   10   21   14    7    8   20   10   24    5 |    39   28   40   44   41   40   21   49   38   49    40
   7  |    5   12    7   13   11    4    6    7    7    8    3 |    23   23   19   27   25   22   22   24   27   27    22
   8  |    7    8    8   13    8    4    7    5    7    6    2 |    20   22   22   18   22   19   24   17   19   18    19
   9  |    7   11    5   10    7    3   11    6    7    7    2 |    20   31   21   20   19   21   31   19   20   20    21
  10  |    6    8    8   11    8    4    7    9    7    7    2 |    36   39   35   36   36   34   38   34   34   36    35
 X11E |   19   21   24   40   20    9   32   24   27  ---    9 |    70   57   59   85   63   65   53   65   76  ---    62
  12  |    7   16    9   10    8    3    8    7    9    7    3 |    30   33   26   30   31   29   32   32   31   30    29
  13  |    7   11    5    9    8    5    8    5    7    9    2 |    22   32   22   30   24   24   28   22   25   24    24
  14  |    8   15   10   13   11    6    9    7   12    6    3 |    58   60   57   60   62   58   58   62   62   60    59
  15  |    5   10    9   11    7    5    7    8   11    8    3 |    37   42   42   41   33   41   41   35   39   34    37
  16  |    8   21    9   12   12    7   12    8   12   12    4 |    24   29   23   26   24   22   23   22   24   22    22
  17  |    5   10    6   10    8    3    7    6    7    9    2 |    40   43   39   39   42   40   42   39   42   39    40
  18E |    7   21   15   29   14   12   22   24   14   23    6 |    85  100   93   82   86   89  100   95   82   93    89
  19  |    7   11    6   12    8    4    7    6    8   15    3 |    29   33   31   36   29   30   32   28   31   32    30
  20  |    6    9    7   10    9    5    7    9    7    7    2 |    31   31   28   30   34   29   30   28   32   31    29
  21E |    9   13    9   13   17    7    9    7    5   11    3 |    29   30   34   34   30   32   32   27   27   28    29
  22  |    6    6    7    8    5    5    6    8    5    6    2 |    25   27   24   27   25   25   26   24   26   27    24
  23  |    8   10   10    9   11    5    8   13   11   10    3 |    73   70   69   73   70   70   73   73   77   75    72
  24  |   10   11    8   12   11    6    8    8    8    7    3 |    26   24   23   25   24   24   24   22   25   21    22
  25  |    7   11    8   13    8    3    6    5    7    8    2 |    21   26   20   24   23   19   23   18   18   20    19
  26  |    9   10    8   22   10    5   10    7   11    8    3 |    30   25   29   38   32   28   28   26   30   28    28
  27  |    6    8    7   11   11    5    5    7    8    7    2 |    21   24   22   23   25   21   25   19   21   23    21
 X28  |    8   16    7   12   12    6    8    7   15  ---    4 |    17   25   18   24   23   17   24   22   21  ---    19
  29  |    7   15    6   10    8    5    9    5    8   17    3 |    29   30   25   28   27   27   30   27   28   31    28
  30  |    6   12    6   18    9    4   10    7    6    9    3 |    25   25   25   29   27   25   25   23   24   25    24
  31  |    9   11    6   14   15    5    7    6   10   10    3 |    39   39   36   43   43   37   39   35   42   38    38
  32  |    6   10    5   10    6    4    8    8    6   10    2 |    23   32   26   26   23   25   32   19   27   21    24
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |    7   12    8   14   10    5   10    9    9   11      |T   38   39   37   40   38   37   38   37   38   38    37
 WRMS |    7   12    8   14    9    5   10    8    9    8      |NE  34   36   33   36   35   34   36   33   35   35    33
 MEDI |    7   11    7   11    9    5    8    7    8    8      |MD  30   31   29   30   29   29   31   27   30   30    29



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 4.2208   GPS week: 2208   MJD: 59700.0-59706.0

CENT| CLK EPO  |        BRUX       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3072 |U   11     9    19 |U    9    13    35 |U    9     7    22 |
emr | emr 3044 |U   16    15    32 |U   17    21    46 |U   14    13    41 |
esa | esa 3072 |    13    14    26 |U    9    18    32 |    11    14    25 |
gfz | gfz 3071 |U   11     9    21 |U   10    14    41 |U    7     6    21 |
grg | grg 3072 |U   11     9    21 |U    8    14    32 |    10    10    25 |
igr | igr 3067 |    10     9    19 |     8    14    32 |     8     9    20 |
igs | igs 3065 |    10     9    20 |     8    14    33 |     8     7    20 |
jpl | jpl 3003 |U   11    11    29 |U   10    19    36 |    12    15    30 |
mit | mit 3072 |U   10     9    20 |U    8    11    36 |U    9     8    22 |



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 5.2208.0   GPS week: 2208   Day: 0   MJD: 59700.0

CENT| CLK EPO  |        BRUX       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3072 |    10     9    22 |     8    12    41 |     8     8    23 |
emr | emr 3072 |    12    13    30 |    19    19    66 |    16    16    42 |
esa | esa 3072 |    12    14    27 |     8    19    38 |    10    14    23 |
gfz | gfz 3071 |    10     8    27 |     8    12    40 |     6     7    24 |
grg | grg 3072 |    10     8    19 |     6    13    39 |     8     9    26 |
igr | igr 3072 |     8     9    20 |     8    14    40 |     8    10    21 |
igs | igs 3072 |     9     8    19 |     8    13    42 |     8     8    21 |
jpl | jpl 3072 |     9     9    26 |     9    18    46 |    12    14    28 |
mit | mit 3072 |     9     8    18 |     7    11    43 |     7     8    24 |

Table 5.2208.1   GPS week: 2208   Day: 1   MJD: 59701.0

CENT| CLK EPO  |        BRUX       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3072 |    11     9    15 |     7    14    34 |     9     7    22 |
emr | emr 2976 |    18    16    31 |    18    20    48 |    18    17    44 |
esa | esa 3072 |    12    14    21 |     7    18    30 |    11    14    26 |
gfz | gfz 3072 |     9     6    15 |     8    12    37 |     7     6    20 |
grg | grg 3072 |    10     7    14 |     8    14    31 |    10    10    23 |
igr | igr 3072 |     9     8    12 |     6    14    29 |     8     9    19 |
igs | igs 3072 |    10     8    14 |     7    14    31 |     9     8    21 |
jpl | jpl 2976 |    10    10    21 |     8    21    36 |    12    16    39 |
mit | mit 3072 |    10     7    13 |     7    12    37 |     9     7    21 |

Table 5.2208.2   GPS week: 2208   Day: 2   MJD: 59702.0

CENT| CLK EPO  |        BRUX       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3072 |    13     9    18 |    11    14    38 |     7    10    23 |
emr | emr 3072 |    16    16    31 |    20    19    47 |    14    13    43 |
esa | esa 3072 |    15    15    26 |    10    16    32 |    11    16    28 |
gfz | gfz 3071 |    11    10    22 |     9    10    39 |     6     8    23 |
grg | grg 3072 |    12     9    20 |     9    15    36 |     9    10    24 |
igr | igr 3069 |    11     9    17 |    10    13    38 |     8    10    20 |
igs | igs 3070 |    11     9    19 |    10    13    38 |     7     9    22 |
jpl | jpl 2880 |    10    12    30 |    11    19    37 |    13    18    27 |
mit | mit 3072 |    12     9    18 |    10    12    42 |     8     9    23 |

Table 5.2208.3   GPS week: 2208   Day: 3   MJD: 59703.0

CENT| CLK EPO  |        BRUX       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3072 |    13     7    22 |     8    12    31 |    10     6    21 |
emr | emr 2976 |    21    16    28 |    14    20    41 |    14     9    39 |
esa | esa 3072 |    13    14    22 |     8    15    27 |    11    13    26 |
gfz | gfz 3071 |    14    10    19 |     7     7    31 |     7     6    22 |
grg | grg 3072 |    12     7    20 |     7    12    23 |    11    14    22 |
igr | igr 3053 |    10     8    16 |     7    12    25 |     9     8    18 |
igs | igs 3043 |    11     9    19 |     8    12    27 |     9     7    19 |
jpl | jpl 2880 |    13    15    28 |    10    17    32 |    12    15    26 |
mit | mit 3072 |    11     7    20 |     7     9    30 |    11    13    22 |

Table 5.2208.4   GPS week: 2208   Day: 4   MJD: 59704.0

CENT| CLK EPO  |        BRUX       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3072 |    11     8    18 |     8    14    27 |     8     7    25 |
emr | emr 3072 |    12    14    39 |    21    24    43 |    14    12    35 |
esa | esa 3072 |    13    14    25 |    11    18    33 |    10    12    24 |
gfz | gfz 3072 |    13     8    23 |    16    24    56 |     6     5    21 |
grg | grg 3072 |    14     9    28 |     7    13    20 |    15    13    38 |
igr | igr 3062 |    12     9    21 |     8    13    22 |     6     9    20 |
igs | igs 3057 |     9     9    21 |     8    14    25 |     8     6    18 |
jpl | jpl 3072 |    12    10    30 |     9    19    25 |    11    12    30 |
mit | mit 3072 |     9    10    19 |     7    11    26 |     8     8    23 |

Table 5.2208.5   GPS week: 2208   Day: 5   MJD: 59705.0

CENT| CLK EPO  |        BRUX       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3072 |    10    10    22 |     7    16    31 |     9     7    18 |
emr | emr 3072 |    17    17    30 |    13    23    39 |    11    10    42 |
esa | esa 3072 |    12    14    30 |     7    20    26 |    11    14    22 |
gfz | gfz 3072 |    11    11    22 |    11    21    40 |     7     7    18 |
grg | grg 3072 |    10    13    25 |     9    20    32 |    10     9    20 |
igr | igr 3072 |     9    11    24 |     7    16    29 |     9    10    18 |
igs | igs 3072 |    10    12    23 |     7    17    28 |     9     7    17 |
jpl | jpl 3072 |    10    13    33 |     9    23    31 |    12    17    31 |
mit | mit 3072 |    11    13    29 |     7    14    34 |    10     7    18 |

Table 5.2208.6   GPS week: 2208   Day: 6   MJD: 59706.0

CENT| CLK EPO  |        BRUX       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3072 |    10     9    21 |    13    12    43 |     9     7    22 |
emr | emr 3072 |    19    13    37 |    17    19    40 |     9    14    41 |
esa | esa 3072 |    13    14    31 |    13    19    39 |    11    12    26 |
gfz | gfz 3071 |    11    10    23 |    12    11    47 |     7     7    22 |
grg | grg 3072 |    11    11    22 |    13    13    40 |     9     8    23 |
igr | igr 3072 |    10    11    23 |    13    14    40 |     7     9    21 |
igs | igs 3072 |    10    10    23 |    13    14    39 |     8     7    21 |
jpl | jpl 3072 |    10     9    36 |    14    20    41 |    10    14    29 |
mit | mit 3072 |    11    10    23 |    12    11    42 |     9     7    24 |


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 6.2208   GPS week: 2208   MJD: 59700.500-59706.500

                                                         AC LOD  AC LOD
CENT  FLAG  |   Xpole   Ypole     Xrt     Yrt    LOD |    BIAS  BIAS RMS
            |   [uas]   [uas]   [uas/d] [uas/d]  [us]|    [us]    [us]
------------+----------------------------------------+------------------
cod   uuuuu |      -9     -10      64     -42     -7 |       7     18
            |      15      14      58     100      3 |       2
emr   uuuuu |      -5     -39     265     184      9 |      16     24
            |      17      31     167     146     11 |       5
esa   uuuuu |       7       6      61       3     -1 |      16     23
            |      12      12      40      27      4 |       2
gfz   uuuuu |       7       2     -84      34      3 |      13     22
            |      12      13      73     111      4 |       3
grg   uuuuu |      -9      12      44    -106     -2 |       1     14
            |       5      12      44     100      2 |       2
igr   xxxxx |       2      -5      27     -13      2 |      -3     17
            |       8       4      21      26      3 |       3
irf   xxxxx |      10      14     -58       3      4 |      -3     20
            |       4      16      32      16      6 |       4
jpl   uuuuu |       3      -9      84      58      9 |      32     37
            |       8      24      48      55     10 |       4
mit   uuuuu |      24      25    -231     -19      1 |      23     29
            |       8      18      42      71      4 |       3
ngs   uuuuu |     -25      -7    -100     -28      0 |      12     20
            |      31      21      78     120      3 |       3
sio   xxxxx |      97     -19    -279      33     -9 |      21     28
            |      62      37     150     116      7 |       5


Table 7.2208.0   GPS week: 2208   Day: 0   MJD: 59700.500

                                                         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 |     -27     -24      -6     -54     -3 |      10     18
emr   uuuuu |     -11      -9     261     153     14 |      13     20
esa   uuuuu |       1      10      87     -39      4 |      18     25
gfz   uuuuu |      11       7       5     164     -5 |      16     24
grg   uuuuu |      -8      10     -24    -254     -5 |       3     14
igr   xxxxx |      14      -3      45      -9     -4 |      -2     17
irf   xxxxx |      11      39     -89      20      0 |      -1     20
jpl   uuuuu |       8       9      47     101     -2 |      33     38
mit   uuuuu |      10      31    -238      45      1 |      25     31
ngs   uuuuu |      20     -32      -3     -39      1 |      13     21
sio   xxxxx |      88      25    -287    -120    -19 |      31     40

Table 7.2208.1   GPS week: 2208   Day: 1   MJD: 59701.500

                                                         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 |      15       0      78    -159    -10 |       7     14
emr   uuuuu |      -5     -36     232     243     12 |      12     19
esa   uuuuu |      -1     -13      87     -16      3 |      15     20
gfz   uuuuu |      13     -10    -204     126      2 |      12     19
grg   uuuuu |      -5       4      11    -126     -1 |       0     10
igr   xxxxx |      -5      -5     -13     -23      4 |      -6     13
irf   xxxxx |      12      21     -88      14      9 |      -5     15
jpl   uuuuu |       6       0      86      41      9 |      29     33
mit   uuuuu |      20      46    -250       6      5 |      21     25
ngs   uuuuu |     -62     -14     -14      20      0 |      10     15
sio   xxxxx |      23      14    -323     -58     -3 |      24     31

Table 7.2208.2   GPS week: 2208   Day: 2   MJD: 59702.500

                                                         AC LOD  AC LOD
CENT  FLAG  |   Xpole   Ypole     Xrt     Yrt    LOD |    BIAS  BIAS RMS
            |   [uas]   [uas]   [uas/d] [uas/d]  [us]|    [us]    [us]
------------+----------------------------------------+------------------
cod   uuuuu |     -20     -14      -1     -22     -9 |       4     14
emr   uuuuu |      18     -45     403     374      7 |      10     17
esa   uuuuu |      26      21      96      15      0 |      12     17
gfz   uuuuu |     -18       1     -85    -166      6 |       8     12
grg   uuuuu |     -12       3      70    -188     -4 |      -4     10
igr   xxxxx |      -6      -3      44      12      4 |      -9     13
irf   xxxxx |      16      16     -67      22     11 |      -8     15
jpl   uuuuu |      16      -3      41      -1     -2 |      27     30
mit   uuuuu |      29      28    -236      59      5 |      18     22
ngs   uuuuu |     -46     -26     -55      27      1 |       7     13
sio   xxxxx |      72     -16    -333     199    -13 |      19     25

Table 7.2208.3   GPS week: 2208   Day: 3   MJD: 59703.500

                                                         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 |     -23       0      32    -179     -8 |       9     20
emr   uuuuu |      16     -62     523     247      2 |      17     27
esa   uuuuu |      11      -6      84     -15     -6 |      17     25
gfz   uuuuu |       2     -16     -22       6      3 |      13     24
grg   uuuuu |     -14      15      17    -124      0 |       1     17
igr   xxxxx |      12     -14      16      26      2 |      -3     19
irf   xxxxx |       8      24     -79      -1      5 |      -2     22
jpl   uuuuu |      -7       5      23      44     10 |      30     36
mit   uuuuu |      20      41    -278       0      4 |      23     31
ngs   uuuuu |       0     -15    -141     189      5 |      12     23
sio   xxxxx |      25      10    -394     121    -14 |      21     28

Table 7.2208.4   GPS week: 2208   Day: 4   MJD: 59704.500

                                                         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 |      -6      14     101     -23     -5 |       7     21
emr   uuuuu |     -22     -93     299     262     -9 |      17     27
esa   uuuuu |       4      13      14      28     -3 |      16     25
gfz   uuuuu |       6      22     -33      19      4 |      13     24
grg   uuuuu |       0      37      51     -77      1 |       1     17
igr   xxxxx |      -3      -1      31     -41      2 |      -3     19
irf   xxxxx |       3       6     -52     -15      5 |      -3     22
jpl   uuuuu |      -7     -62     131      25     27 |      31     37
mit   uuuuu |      29      23    -268     -44      5 |      23     30
ngs   uuuuu |     -27      -1    -156    -101     -2 |      13     23
sio   xxxxx |     133     -37    -388     119     -2 |      18     27

Table 7.2208.5   GPS week: 2208   Day: 5   MJD: 59705.500

                                                         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     -23     147      52     -6 |       5     18
emr   uuuuu |     -25     -13      34     -75     16 |      18     27
esa   uuuuu |      -9       7      63      38     -3 |      15     24
gfz   uuuuu |      21      14    -135     106      5 |      13     24
grg   uuuuu |     -13      10      77       6     -2 |       0     17
igr   xxxxx |       3      -1      24     -11      2 |      -3     19
irf   xxxxx |       7      -8     -30      -9      0 |      -2     22
jpl   uuuuu |      -2      -8     144      34      8 |      32     39
mit   uuuuu |      31       3    -171     -48     -5 |      23     31
ngs   uuuuu |      -7      20    -211    -130      0 |      12     22
sio   xxxxx |     171     -56    -275      11     -9 |      16     23

Table 7.2208.6   GPS week: 2208   Day: 6   MJD: 59706.500

                                                         AC LOD  AC LOD
CENT  FLAG  |   Xpole   Ypole     Xrt     Yrt    LOD |    BIAS  BIAS RMS
            |   [uas]   [uas]   [uas/d] [uas/d]  [us]|    [us]    [us]
------------+----------------------------------------+------------------
cod   uuuuu |       0     -20     101      91     -8 |       8     19
emr   uuuuu |      -3     -12     102      80     24 |      25     32
esa   uuuuu |      18      10      -4       6     -6 |      19     27
gfz   uuuuu |      11      -3    -110     -21      7 |      18     27
grg   uuuuu |     -13       3     104      23      0 |       4     18
igr   xxxxx |       1      -8      41     -47      1 |       1     19
irf   xxxxx |      14       2      -3     -12     -5 |       3     20
jpl   uuuuu |       6      -1     116     162     12 |      39     44
mit   uuuuu |      30       0    -177    -152     -5 |      27     33
ngs   uuuuu |     -53      21    -122    -164     -3 |      17     24
sio   xxxxx |     168     -70      45     -43     -1 |      18     25


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