[IGSREPORT-20552] Wk 1672 IGS Final Orbits

IGS ACC igs.acc at noaa.gov
Thu Feb 9 05:56:31 PST 2012


Author:  AC Coordinator / NOAA NGS

sum-file Version 2.0
Final IGS Orbit Combination - Week 1672   (Jan 22, 2012 - Jan 28, 2012)

Contacts: J. Griffiths (jake.griffiths at noaa.gov)
          K. Choi (kevin.choi at noaa.gov)


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. 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, no satellite L1/L2 delay calibration should be
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. 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 3 weeks (21 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:

igs1672[0-6].sp3  IGS GPS ephemeris files in SP3 format.
igs1672[0-6].clk  IGS GPS satellite and station clocks in clock RINEX format.
igs1672[0-6].cls  IGS GPS clock combination summary report.
igs16727.erp      Earth Rotation Parameters (ERP) and their rates as well as
                  Universal Time (UT1-UTC) and Length Of Day (LOD) associated 
                  with IGS ephemerides.
igs16727.sum      Complete report.

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

 1. The centres used in the clock combination are COD, EMR, ESA, GFZ, MIT, and
    JPL. The other centres are excluded because of poorer consistency (GRG),
    they provide broadcast clocks (NGS), or clock corrections are not provided
    (SIO).  The clock information not used is still compared to combination for
    completeness.  
    The value of 999999.999999 microseconds, according to the sp3 format 
    convention, is used to signify that no clock solution is available and 
    therefore must not be used.

 2. Rapid (IGR) orbits/clocks are included in the combination for statistics only.
    Starting week 1582, a new solution from CNES/GRGS (GRG) is included with
    weight except for the clock and LOD combinations.

 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   | MOBS MOBS
                0  |  EMR   | 3 3
                0  |  ESA   | KOUR TIXI
                0  |  GFZ   | 3 6 19 26 BRFT DAV1 DGAR HOLB IRKT KIRU SYOG
                0  |  GRG   | KOUR USN3
                0  |  JPL   | 3 6 26
                0  |  MIT   | 3 6 26 3 6 26
                1  |  COD   | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20
                1  |  COD   | 21 22 23 25 26 27 28 29 30 31 32 1 2 3 4 5 6 7 8
                1  |  COD   | 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 25 26
                1  |  COD   | 27 28 29 30 31 32
                1  |  ESA   | 6 26 UNSA
                1  |  GFZ   | 5 6 19 29 BRFT CEDU COCO DGAR KOUR OHI2
                1  |  GRG   | USN3
                1  |  JPL   | 21 AREQ
                1  |  MIT   | GRAZ NICO NYAL
                2  |  COD   | REUN SOFI XMIS
                2  |  EMR   | 3 6 3 6 26 WUHN NYAL WUHN
                2  |  ESA   | UNSA
                2  |  GFZ   | 3 6 17 19 29 BRFT DGAR HOLB IRKT KIRU OHI2 PDEL REUN
                2  |  GRG   | KOUR LPGS USN3
                2  |  JPL   | 3 6 AREQ
                2  |  MIT   | 3 6 26 3 6 26 CHUR DAV1 HYDE CHUR GODE
                3  |  COD   | NICO XMIS
                3  |  EMR   | 6 21 26 6 21 26 SCH2 YELL SCH2 YELL
                3  |  ESA   | KOUR TIXI
                3  |  GFZ   | 5 6 17 19 26 29 BRFT DGAR HOLB KIRU OHI2 PDEL
                3  |  GRG   | AMC2 KIT3 KOUR
                3  |  JPL   | 6 26 AREQ YELL
                3  |  MIT   | 3 6 26 3 6 26 MAW1 MAW1 NICO NYAL
                4  |  COD   | MOBS MOBS XMIS
                4  |  EMR   | 6 3 6 YELL TLSE YELL
                4  |  ESA   | UNSA
                4  |  GFZ   | 5 6 17 19 29 BOGT BRFT DGAR MANA OHI2 REUN STJO YELL
                4  |  GRG   | AMC2 STJO USNO
                4  |  JPL   | 3
                4  |  MIT   | 3 6 3 6 MAW1 MAW1 SOFI STJO
                5  |  COD   | MOBS HRAO MOBS SUTM XMIS
                5  |  EMR   | 3 6 3 6 YELL YELL
                5  |  ESA   | MATE HYDE UNSA
                5  |  GFZ   | 5 6 17 19 26 29 BRFT KIRU MATE
                5  |  GRG   | AMC2 TIXI
                5  |  JPL   | 3 6 AREQ
                5  |  MIT   | 1 3 6 1 3 6 MAW1 TIXI IRKJ MAW1 TIXI
                6  |  COD   | WUHN OHI3 WUHN XMIS
                6  |  EMR   | 3 3
                6  |  ESA   | UNSA
                6  |  GFZ   | 17 19 29 BRFT BRUS IISC KIRU
                6  |  GRG   | USN3
                6  |  JPL   | 3 6 AREQ
                6  |  MIT   | 3 6 15 16 19 26 28 3 6 11 15 16 19 26 28 HRAO HYDE
                6  |  MIT   | KHAJ MAC1 MOBS TOW2 TOW2 WUHN

 5. 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  |  NGS   |   3

 6. 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.
    

 7. Small rotations were applied to all the AC orbit and ERP values in order
    to align them to the current IGS reference frame. These rotations were
    estimated in the IGS SINEX combination process, performed by the IGS Reference
    Frame Coordinator at the Institut Geographique National (IGN). 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 |   [mm]   [mm]   [mm]   [uas]  [uas]  [uas]   [ppb]
     -------+---------------------------------------------------
       COD  |   -1.0    -.2   -1.1     -46    -10      7     .15
       EMR  |    1.6     .2   17.7      18     -9      9     .42
       ESA  |    7.2    4.7   -1.5      79   -175     62     .14
       GFZ  |   -1.9     .4   -1.4     -65     27     -2     .21
       GRG  |    4.7   -1.6   -3.0     -30     40    -29     .17
       JPL  |    -.2    4.4   11.0     -66     36    -33     .20
       MIT  |    7.5     .2     .1     -31     18    -51     .30
       NGS  |    5.2    2.1   -6.8      30    -35     35     .47
       SIO  |    6.1    1.9   11.5       4   -107     26     .18


 8. 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 navigation solution is still based on the SP3 clocks but this will soon
    adopt the clock RINEX files as well.

 9. Starting on 27-Feb-2000 (GPS Week 1051-0; MJD 51601) the IGS final products
    are aligned to the IGS reference frame products (station coordinates and
    ERPs as generated by IGN). For more information see IGSMAIL #2750.
    Because of this change in alignment Table 2 has been enhanced with one 
    additional line per AC. This additional line shows the X- and Y-rotations 
    which were applied to each of the AC orbits prior to the orbit combination. 
    These rotations are based on the difference between the individual AC ERP 
    estimates and the IGS reference frame ERP product. The total rotation of
    the individual AC orbits w.r.t. the IGS combined orbit is the sum of the
    values in the two lines of Table 2 plus the reference frame rotation.

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

    
ORBIT COMBINATION AND EVALUATION STATISTICS:                                    
--------------------------------------------                                    
      
Most combination statistics are with respect to the combined orbits and
consist of five 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 1.1672.a). It also displays the computed satellite
position sigmas for the combined orbits (table 1.1672.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 2.1672.[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 3.1672.[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 and final
part, Table 5, is similar to Table 4 and contains daily precise navigation
statistics (tables 5.1672.0-6).

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 1672 summary.                       (Jan 22, 2012 - Jan 28, 2012)

Table 1.1672.a   GPS week: 1672   MJD: 55948.000-55954.000

         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  251|    0     0     5    57   -23     3  -.36   10    9 |    -434     -97    420    475
        |    0     0     2    14     9    10   .02           |     287    1026
emr   96|   -1     0    15   -71   -36   -34   .26   19   19 |  180879     256     15    106
        |    1     1     1    16    25    20   .03           |  306662     570
esa  130|    1     0     0   -97   175     8   .10    7    7 |    1024   -1127     13    128
        |    0     0     1    15    21     6   .01           |    1216    1444
gfz  191|   -1    -1    -9   108  -116    -9   .47   13   12 |      97    -231     33    110
        |    0     1     0    46    33    12   .04           |     280     797
grg  123|    1     0    -6    26  -122     2   .53   16   15 |     -10     -14     52    244
        |    1     0     2    15    16    17   .05           |     292     605
igr  n/a|    0     0    -1   -26   -47     1  -.10    5    5 |   -5084    -363     20     84
        |    0     0     0    21    22    14   .02           |    1952     676
jpl  174|    0    -1     2    92  -139    -3   .36   14   14 |    2500     142     17     81
        |    0     1     1    20    11    72   .04           |     969     620
mit  262|    0     0    -3    54   -89    -7  -.38   11   10 |     -71     -33     21    169
        |    0     0     1    36    32    15   .01           |     290     726
ngs  220|    0     0    -3   -82    13    -4  -.26   13    8 | -114084  790592   2016   3737
        |    0     1     0    29    33    15   .06           |  300529 2091652
sio  246|    0     0     4   -10   166    23  -.23   18   17 |     ---     ---    ---    ---
        |    1     0     1    34    24    14   .01           |     ---     ---


Table 1.1672.b   GPS week : 1672   MJD: 55948.000-55954.000   

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



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
         sum of a priori and estimated transformations.
         WRMS - RMS weighted by the centres SP3 header accuracy codes.
         STA  - Number of stations in the daily solutions.
   
Table 2.1672.0   GPS week: 1672   Day: 0   MJD: 55948.000                            

CENT STA|   DX    DY    DZ    RX    RY    RZ   SCL  RMS  WRMS|    TOFT   TDRFT   SDEV    RMS
        |  [mm]  [mm]  [mm] [uas] [uas] [uas] [ppb] [mm] [mm]|    [ps]  [ps/d]   [ps]   [ps]
--------+----------------------------------------------------+------------------------------
cod  251|    0     1    10    66   -33    11  -.35   11   10 |    -538    -540     21     74
        |                     20    -6                       |
emr   96|   -2     2    13   -89    -8   -72   .27   20   20 |  629920    -107     21    100
        |                     22   -97                       |
esa  130|    0     1    -2  -115   139     6   .12    7    7 |     304   -1404     15    126
        |                     54    24                       |
gfz  191|    0    -3    -8   200   -73   -16   .51   16   15 |     630   -1861     39    101
        |                    -49    67                       |
grg  123|    1     0    -8     4   -92     4   .52   20   19 |     112    -718     70    269
        |                     50   -26                       |
igr  n/a|    0     0     0   -55   -84   -19  -.08    6    6 |   -3415    -241     19     69
        |                     18    41                       |
jpl  174|    0    -3     2    57  -153   -34   .41   15   15 |    3638    -174     19     65
        |                     13     2                       |
mit  262|    0     0    -1   125   -65     2  -.39   11   11 |       7    -715     25    167
        |                    -29     7                       |
ngs  220|    0     1    -3  -120   -35    13  -.20   11    9 |    -508    -639   2141   3935
        |                     28    66                       |
sio  246|    0    -1     6    45   184    32  -.23   19   16 |     ---     ---    ---    ---
        |                    -10  -103                       |

Table 2.1672.1   GPS week: 1672   Day: 1   MJD: 55949.000                            

CENT STA|   DX    DY    DZ    RX    RY    RZ   SCL  RMS  WRMS|    TOFT   TDRFT   SDEV    RMS
        |  [mm]  [mm]  [mm] [uas] [uas] [uas] [ppb] [mm] [mm]|    [ps]  [ps/d]   [ps]   [ps]
--------+----------------------------------------------------+------------------------------
cod  251|    1     0     5    67    -7     5  -.34   10    9 |    -228    -593   2836   2848
        |                    -19   -76                       |
emr   96|   -3     0    13   -56    -6   -41   .31   20   20 |  629655    -442     19    125
        |                      0   -46                       |
esa  130|    0     0     1   -87   158     9   .11    7    6 |    1687   -1506     11    114
        |                      0     9                       |
gfz  191|    0    -1    -9   115  -154   -13   .52   15   15 |    -213     521     35    116
        |                    -32     1                       |
grg  123|    2     1    -6    51  -115     4   .53   16   15 |     358     -65     50    255
        |                     -1   -46                       |
igr  n/a|    0     0    -1   -13   -50     2  -.08    5    4 |   -3102    -615     25    102
        |                    -42    42                       |
jpl  174|    0    -1     1   119  -119   -35   .35   14   13 |    3609    -505     19     99
        |                    -74    71                       |
mit  262|    0     0    -5    32  -155     5  -.37   10    9 |     355     431     24    172
        |                      3    45                       |
ngs  220|    0     0    -4  -109    73     3  -.23   12   10 | -795620 5534014   1918   3749
        |                     24   -37                       |
sio  246|   -1     0     4   -41   115    41  -.24   17   14 |     ---     ---    ---    ---
        |                     14   -67                       |

Table 2.1672.2   GPS week: 1672   Day: 2   MJD: 55950.000                            

CENT STA|   DX    DY    DZ    RX    RY    RZ   SCL  RMS  WRMS|    TOFT   TDRFT   SDEV    RMS
        |  [mm]  [mm]  [mm] [uas] [uas] [uas] [ppb] [mm] [mm]|    [ps]  [ps/d]   [ps]   [ps]
--------+----------------------------------------------------+------------------------------
cod  251|    0     1     6    49   -31    -4  -.35   11    9 |    -121    -631     13     74
        |                      9   -14                       |
emr   96|    0     0    13   -58   -15   -43   .28   19   19 |    1462     103     16    116
        |                      5   -54                       |
esa  130|    1     1     0   -78   178    17   .09    7    6 |     565    -711     14    137
        |                      4     5                       |
gfz  191|    0    -3    -9    84  -136   -20   .45   12   11 |      72     202     34    127
        |                    -45    31                       |
grg  123|    0     0    -1    14  -136   -25   .46   17   14 |      58     109     49    264
        |                     18   -44                       |
igr  n/a|    0     0    -2   -24   -57     4  -.11    5    4 |   -4136       0     22     86
        |                     18    27                       |
jpl  174|    0     0     0    82  -149    44   .38   15   15 |    2342     264     18     87
        |                     33    34                       |
mit  262|   -1     0    -3    49   -86    -6  -.37   10    9 |       7      48     18    182
        |                     14    43                       |
ngs  220|    1     0    -4   -70    17   -23  -.24   13    8 |    -184    -555   2006   3787
        |                     19    22                       |
sio  246|   -1    -1     5   -11   168    30  -.21   17   14 |     ---     ---    ---    ---
        |                     13   -75                       |

Table 2.1672.3   GPS week: 1672   Day: 3   MJD: 55951.000                            

CENT STA|   DX    DY    DZ    RX    RY    RZ   SCL  RMS  WRMS|    TOFT   TDRFT   SDEV    RMS
        |  [mm]  [mm]  [mm] [uas] [uas] [uas] [ppb] [mm] [mm]|    [ps]  [ps/d]   [ps]   [ps]
--------+----------------------------------------------------+------------------------------
cod  251|    0     1     6    54   -21     4  -.38    9    8 |    -250    -699     18     80
        |                     18   -15                       |
emr   96|   -2    -3    15   -69   -55   -13   .24   20   20 |    1337    -237     17    111
        |                    -22    -2                       |
esa  130|    0     0     0   -95   205    16   .10    7    7 |    3337   -3385     14    139
        |                    -16    -8                       |
gfz  191|   -1    -2   -10   127  -147    10   .44   12   14 |     201    -619     32    108
        |                    -41    12                       |
grg  123|    2     1    -3    24  -119     9   .48   14   12 |     280    -812     52    215
        |                     19   -31                       |
igr  n/a|    0     0    -2   -30   -20    25  -.11    4    4 |   -4191   -1715     20     90
        |                    -25    11                       |
jpl  174|   -1    -1     3    92  -129   -57   .35   15   14 |    2649    -651     19     78
        |                    -35     6                       |
mit  262|    0     0    -2    39   -87     0  -.37   11    9 |     172    -899     18    152
        |                     16    40                       |
ngs  220|    1     0    -4   -91    30   -15  -.21   13    8 |    -197    -805   2163   4033
        |                     50    -3                       |
sio  246|   -1    -1     4   -21   162    27  -.21   17   16 |     ---     ---    ---    ---
        |                     10   -78                       |

Table 2.1672.4   GPS week: 1672   Day: 4   MJD: 55952.000                            

CENT STA|   DX    DY    DZ    RX    RY    RZ   SCL  RMS  WRMS|    TOFT   TDRFT   SDEV    RMS
        |  [mm]  [mm]  [mm] [uas] [uas] [uas] [ppb] [mm] [mm]|    [ps]  [ps/d]   [ps]   [ps]
--------+----------------------------------------------------+------------------------------
cod  251|    0     0     6    65   -15    11  -.38   10    9 |    -815     166     18     82
        |                    -17   -48                       |
emr   96|   -1     1    14   -51   -54   -19   .23   18   18 |    1627     719     13    104
        |                    -19     2                       |
esa  130|    1     0     0   -81   169     3   .10    6    6 |    1337   -1174     16    147
        |                     25   -15                       |
gfz  191|    0     0    -8    60  -118     1   .44   12   11 |     -94     167     32    104
        |                    -10   -12                       |
grg  123|    0     0    -7    26  -129    16   .51   16   15 |    -338     661     45    225
        |                      7   -20                       |
igr  n/a|    0     0     0    -1   -43     4  -.12    5    5 |   -5420    -408     19     89
        |                    -19    23                       |
jpl  174|    0    -2     4   106  -142   -55   .32   14   13 |    2715     361     19     82
        |                      3   -32                       |
mit  262|   -1     0    -3    22   -97    -2  -.39   11    9 |    -457     709     19    176
        |                     -5    33                       |
ngs  220|    0     0    -2   -44     7    12  -.26   13    9 |    -693      14   2002   3566
        |                    -27    74                       |
sio  246|    0     0     3   -44   162    21  -.23   17   17 |     ---     ---    ---    ---
        |                     18   -72                       |

Table 2.1672.5   GPS week: 1672   Day: 5   MJD: 55953.000                            

CENT STA|   DX    DY    DZ    RX    RY    RZ   SCL  RMS  WRMS|    TOFT   TDRFT   SDEV    RMS
        |  [mm]  [mm]  [mm] [uas] [uas] [uas] [ppb] [mm] [mm]|    [ps]  [ps/d]   [ps]   [ps]
--------+----------------------------------------------------+------------------------------
cod  251|    0     0     3    29   -20    12  -.35    8    8 |    -278    -519     21     88
        |                     30   -31                       |
emr   96|    0     0    17   -93   -70   -20   .25   19   19 |    1332    1068     11     94
        |                     24    25                       |
esa  130|    2     0     1  -105   181     0   .09    7    7 |    -160    1521     13    118
        |                     57     7                       |
gfz  191|   -2     0    -8    84  -110    -3   .43   12   10 |     180     -15     30    111
        |                     15    20                       |
grg  123|    2     0    -6    25  -127    22   .60   15   14 |    -142     757     51    235
        |                      8    -8                       |
igr  n/a|    0     0     0   -54   -21     4  -.10    4    4 |   -6942     353     18     85
        |                     16    35                       |
jpl  174|    0     0     1    81  -140   -28   .32   14   13 |    1372    1066     15     84
        |                      0    18                       |
mit  262|    0     0    -3    81   -53   -11  -.38   11   10 |    -358     851     22    164
        |                    -25     5                       |
ngs  220|    0     0    -4   -91     8     0  -.30   13    8 |    -490    -206   1798   3281
        |                     17   -52                       |
sio  246|    0     0     3    26   180     6  -.24   17   16 |     ---     ---    ---    ---
        |                     -1   -64                       |

Table 2.1672.6   GPS week: 1672   Day: 6   MJD: 55954.000                            

CENT STA|   DX    DY    DZ    RX    RY    RZ   SCL  RMS  WRMS|    TOFT   TDRFT   SDEV    RMS
        |  [mm]  [mm]  [mm] [uas] [uas] [uas] [ppb] [mm] [mm]|    [ps]  [ps/d]   [ps]   [ps]
--------+----------------------------------------------------+------------------------------
cod  251|   -1     0     1    68   -33   -15  -.37    8    8 |    -808    2137     19     80
        |                      2   -11                       |
emr   96|    0     0    17   -79   -46   -27   .27   19   19 |     821     693     12     94
        |                     67   -15                       |
esa  130|    1     1     2  -117   193     3   .12    7    7 |      99   -1230     13    118
        |                     25    -6                       |
gfz  191|   -1     0    -8    84   -71   -22   .49   11   10 |     -92     -14     29    103
        |                    -59    -3                       |
grg  123|    1     0    -8    36  -139   -14   .59   16   15 |    -398     -33     50    251
        |                     -1    -9                       |
igr  n/a|    0     0    -1    -6   -53   -13  -.10    5    4 |   -8385      79     17     70
        |                     10     6                       |
jpl  174|    0     0     6   110  -141   140   .38   14   14 |    1179     636     16     77
        |                      5    48                       |
mit  262|    0    -2    -4    32   -78   -41  -.40   12   10 |    -225    -661     21    171
        |                      5    10                       |
ngs  220|    0    -1    -3   -47    -8   -23  -.36   12    8 |    -897    2325   2088   3808
        |                     25    44                       |
sio  246|    1    -1     1   -27   191     1  -.23   19   24 |     ---     ---    ---    ---
        |                     15   -81                       |

       
       
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 3.1672.0   GPS week: 1672   Day: 0   MJD: 55948.000                            

        Weighted Average                                            Orbit Dynamics (7 days)
 PRN  |  cod  emr  esa  gfz  grg  igr  jpl  mit  ngs  sio  IGS |   cod  emr  esa  gfz  grg  igr  jpl  mit  ngs  sio   IGS
------+--------------------------------------------------------+---------------------------------------------------------
   1  |   18   18    4   16   10    6   13    9   13   23    4 |    39   40   37   41   42   36   41   44   39   38    37
   2  |   10   23    5   20   10    5   17   10   10   27    4 |    23   35   23   33   23   22   32   23   24   27    22
   3E |   17   24    8   19   54    6   17   15   22   31    7 |    31   33   23   22   58   29   26   26   46   29    25
   4  |    9   12    4   17   15    6   10    9    8   13    3 |    25   31   29   34   34   30   31   32   27   28    27
   5  |   11   17    5   16   11    8   19   10   10   24    4 |    22   31   24   28   28   25   32   25   25   27    23
   6E |   22   21    8   19   26   12   17   13   18   25    6 |   112  127  116  121  130  114  125  120  118  120   119
   7  |    6   22    6   12   19    7   13   14   10   18    4 |    35   45   36   37   46   37   44   32   35   32    34
   8  |    9   15    5   12   14    8   12   14   12   16    4 |    19   26   21   27   23   21   25   15   22   17    18
   9  |   11   17    9   12   13    3   10   11    7   11    3 |    16   25   23   23   24   19   23   20   21   16    17
  10  |   12   15    5   17   11    5   11    9    7   17    3 |    26   29   32   38   34   32   34   33   31   29    29
  11  |    9   21    5   16   16    6   13   10    9   14    4 |    19   31   23   26   34   21   30   30   25   23    22
  12  |   10   23    7   14   22    4   17   12    9   16    4 |    20   34   20   25   33   22   31   19   22   17    19
  13E |    9   15    7   15   30    6   11    9   11   11    4 |    19   27   18   20   29   18   24   20   20   20    17
  14E |   10   15    8   17   14    4    8    6    8   16    3 |    19   28   25   22   25   21   24   23   20   28    22
  15  |   12   23    7   17   16    4   14   11   10   13    4 |    15   29   17   24   19   17   24   19   20   22    15
  16  |   10   29    6   12   21    4   18   17   10   18    5 |    17   36   16   16   27   17   28   15   16   12    15
  17E |    8   18    7   18   16    6   18   11   11   10    4 |    20   33   23   30   31   21   30   17   21   20    21
  18  |   12   21    6   20   14    3   13   10    9   30    5 |    24   32   26   39   29   28   32   28   27   26    25
  19E |    8   22    7   18   18    7   14   13   10   13    4 |    24   37   21   20   26   24   27   24   25   24    22
  20  |    8   17    7   15   14    7   14   13    7   30    4 |    17   23   19   22   26   18   26   26   21   21    19
  21  |    7   20    7   13   14    6   16    7    9   27    4 |    25   33   26   27   24   27   31   27   24   37    24
  22  |   10   18    7   22   16    5   12   13    7   18    4 |    24   31   29   37   39   27   33   30   28   30    28
  23E |    9   25   13   17   16    6   15   21   13   20    5 |    38   47   47   49   45   41   47   30   41   31    39
  25  |   11   15    6   17   20    6   14   10   12   10    4 |    16   26   21   22   30   21   30   17   23   18    18
  26E |   13   17   10   15   14    6   21   13   14   22    5 |    61   64   60   63   64   63   64   66   64   65    61
 X27  |   11   20    7   11   14    4   11    7    9  ---    4 |    16   29   22   24   23   20   24   21   24  ---    19
  28  |    7   18    6   15   21    6   13    7    7   12    3 |    18   32   21   21   33   20   28   18   21   14    18
  29E |   11   28   10   19   18    5   22   10    9   11    5 |    49   53   52   54   52   50   53   47   49   51    48
  30  |    9   17    7   15   16    5   12   11   14   21    4 |    14   26   19   18   25   18   22   18   19   25    17
  31  |   10   17   11   15   24    6   14    9   11   15    4 |    14   29   21   24   36   19   26   15   20   17    18
  32  |    7   21    6   15   16    6   11   10    8   13    3 |    16   18   18   23   27   17   20   24   18   18    18
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |   11   20    7   16   20    6   15   11   11   19      |T   26   36   29   32   36   28   34   29   30   29    27
 WRMS |   10   20    7   15   19    6   15   11    9   16      |NE  20   30   23   26   29   22   29   23   23   22    21
 MEDI |   10   18    7   16   16    6   14   10   10   16      |MD  20   31   23   26   30   22   30   24   24   25    22

Table 3.1672.1   GPS week: 1672   Day: 1   MJD: 55949.000                            

        Weighted Average                                            Orbit Dynamics (7 days)
 PRN  |  cod  emr  esa  gfz  grg  igr  jpl  mit  ngs  sio  IGS |   cod  emr  esa  gfz  grg  igr  jpl  mit  ngs  sio   IGS
------+--------------------------------------------------------+---------------------------------------------------------
   1  |   17   13    6   18   11    4   17   10   12   16    4 |    33   26   29   30   29   28   29   34   29   24    28
   2  |    7   22    6   16   13    4   15   10   13   27    4 |    15   27   19   28   19   16   22   18   17   20    16
  X3E |   15   22  ---  ---  ---   18  ---   16  152  ---   12 |    23   23  ---  ---  ---   29  ---   25  124  ---    23
   4  |    8   11    4   12   12    3    8    7   12   11    3 |    17   23   22   29   26   20   23   20   23   19    21
   5  |    9   14    6   23   16    7   14    9   11   21    4 |    15   21   18   28   23   18   23   19   20   17    17
   6E |   23   23   15   19   21    9   19   18   27   28    7 |    87   97  100  104  108   97  102  101   96  103    97
   7  |    6   25    5   10   17    4   12    8    9   13    3 |    16   31   20   21   28   16   21   18   20   17    19
   8  |   10   14    7   11   15    5   11   10   10   12    3 |    19   22   21   26   19   18   24   15   19   13    18
   9  |    8   16    6   15    9    4   11   10    9    7    3 |    13   20   14   21   20   12   17   17   16   14    13
  10  |    8   12    5   11   11    5    7    9    6   15    3 |    21   24   26   27   27   24   26   21   23   22    24
  11  |   11   20    4   15   17    6   12    8   20   13    4 |    21   28   20   22   31   22   25   26   29   20    22
  12  |   13   23    6   14   19    6   17   10   11   15    4 |    16   31   20   29   26   18   26   18   21   20    18
  13E |    7   14    7   15   11    2   11    9    8   10    3 |    13   20   17   18   19   13   19   18   18   16    14
  14E |    8   18    5   15   14    3   10    9   10   13    3 |    17   25   22   22   22   17   19   23   20   23    19
  15  |    8   23    6   16   16    3   19    8   11   12    4 |    12   27   14   22   19   14   23   17   18   19    13
  16  |    7   24   10   12   18    5   16   11   11   17    4 |    15   28   16   22   24   16   26   18   16   16    15
  17E |    7   18    7   15   13    4   20    9   11   10    4 |    22   32   25   32   33   24   30   24   24   27    25
  18M |   11   18    6   19   18    4   13   13    9   22    4 |    29   34   31   39   30   30   34   38   30   30    31
  19E |   10   24    7   16   20    4   12   15   16   15    5 |    12   28   19   21   20   14   19   21   18   22    16
  20  |    9   16    6   26    8    5   12    7   14   27    4 |    14   21   18   26   15   16   21   19   18   17    17
  21M |    8   23    6   16   19    5   24   11   11   30    5 |    20   27   24   23   27   22   24   20   27   26    20
  22M |    7   18    4   17   15    4   13    6   10   19    3 |    17   28   24   27   29   21   28   20   23   19    21
  23  |    8   24    7   16   21    4   15   12    8   12    4 |    19   27   20   26   28   16   24   21   18   15    18
  25  |   10   16    6   16   21    5   13    9   10    9    4 |    12   22   24   24   27   16   24   16   20   17    17
  26E |   15   16    9   14   19    7   17   10   17   22    5 |    64   66   65   60   62   67   64   69   69   56    64
  27  |    9   20    5   13   14    3   12    8   13   11    3 |    15   26   18   23   21   17   22   19   21   16    16
  28  |    8   24    6   10   17    4   11    7   11   12    3 |    18   34   21   26   30   18   23   18   20   13    18
  29E |    9   27    6   14   26    4   18   10    9   17    5 |    65   67   69   67   61   68   67   67   63   70    66
 X30  |    9   15    8   15   15    6   12   11    8  ---    4 |    10   23   17   20   19   13   20   16   18  ---    13
  31  |    8   20    6   13   20    5   14    9   11   16    4 |    13   27   17   22   33   16   23   16   19   21    17
  32  |    8   16    5   14   13    4   14    9   13   13    3 |    11   14   12   14   15   11   14   16   14   12    12
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |   10   20    7   15   16    5   14   10   12   17      |T   22   30   26   29   29   24   28   26   29   24    24
 WRMS |    9   20    6   15   15    4   13    9   10   14      |NE  16   25   19   24   23   17   22   19   20   17    17
 MEDI |    8   18    6   15   16    4   13    9   11   15      |MD  17   27   20   26   26   18   23   19   20   19    18

Table 3.1672.2   GPS week: 1672   Day: 2   MJD: 55950.000                            

        Weighted Average                                            Orbit Dynamics (7 days)
 PRN  |  cod  emr  esa  gfz  grg  igr  jpl  mit  ngs  sio  IGS |   cod  emr  esa  gfz  grg  igr  jpl  mit  ngs  sio   IGS
------+--------------------------------------------------------+---------------------------------------------------------
   1  |    9   11    6   11   15    4   13    8    9   13    3 |    29   29   31   35   33   31   35   35   30   28    30
   2  |   10   23    7   12   11    3   17   10   11   25    4 |    19   29   18   23   21   17   27   21   20   22    17
   3E |   18   23    9   17   28   10   20   12   41   31    7 |    34   34   33   35   31   28   32   30   61   33    27
   4  |    9    9    4   10   11    4    8    6    7   10    2 |    18   19   19   27   25   22   25   23   23   18    20
   5  |    9   15    7    8   14    6   19   11   10   17    4 |    14   22   17   26   23   17   29   16   17   18    15
   6E |   27   18   13   18   16    8   21   13   28   22    7 |    93  105  103  110  109  100  111  106  101  111   103
   7  |    7   19    5    9   20    3   12    9    7   12    3 |    15   25   19   22   34   16   23   16   15   15    16
   8  |    9   18    6   14   11    6    9    8   10   10    3 |    15   23   18   30   26   17   23   16   18   14    16
   9  |    8   14    5   10   13    5   14   12    8   13    3 |    13   23   16   22   21   15   20   22   17   20    15
  10  |    9    9    5    9   10    4   10    8    6   14    3 |    20   21   22   31   25   23   29   26   20   22    22
  11  |    8   17    6   10   18    5   12    7    8    8    3 |    16   25   18   20   28   17   25   23   17   18    17
  12  |   13   26    6   12   23    3   21   10   11   16    5 |    17   31   17   24   25   16   28   16   17   16    14
  13E |    7   16    6   11   14    5   12    8   11   10    3 |    27   32   27   27   36   23   30   29   27   28    26
  14E |   11   13    5   11   11    3    7    8   10   11    3 |    25   31   30   30   30   26   29   30   31   28    27
  15  |    8   24    6   11   15    4   19    8    8   13    4 |    11   26   12   22   20   11   23   15   12   16    10
  16  |    9   27   10    8   19    5   16   10   10   18    4 |    13   31   22   18   26   13   26   16   15   15    15
  17E |    7   23    8   12   27    4   22   13   11   14    5 |    21   30   25   26   34   20   27   17   20   18    19
  18  |   11   18    6   19   14    3   12    9    9   21    4 |    20   29   23   41   25   22   28   24   21   23    22
  19E |    8   20    7   12   14    5   11   14   11   13    4 |    20   25   17   20   22   17   21   22   23   22    17
  20  |    8   14    5   16    8    4   11    7    8   24    3 |    17   23   19   24   21   19   26   23   19   23    18
  21  |    8   17    5   11   12    5   16    8   11   27    4 |    19   27   20   26   24   18   28   19   18   25    17
  22  |    9   16    5   12   13    4   10   10   13   14    3 |    22   27   26   32   32   23   29   22   28   23    23
  23  |    7   23    7   13   17    4   16   17   11   12    4 |    16   28   20   21   24   16   24   14   18   13    14
  25  |    9   14    6   13   23    3   15    7   11   11    4 |    12   19   15   18   25   12   25   14   11   11    11
  26E |   18   20    9   13   18    6   24   10   13   25    5 |    60   68   66   66   68   65   64   71   65   73    66
 X27  |   10   16    4   10   15    7   14    8   11  ---    3 |    13   23   16   21   21   17   24   18   22  ---    15
  28  |    6   24    6   12   20    4   15    6   11   12    4 |    19   35   20   25   33   19   29   18   17   14    18
  29E |   10   23    8   11   15    5   20   11   12   11    4 |    33   39   34   44   39   36   37   30   40   35    34
  30  |    9   12    6   12   18    6   13    6    9   15    3 |    12   19   19   18   27   15   22   16   19   22    15
  31  |    7   17    6   11   24    4   14   10    8   17    4 |    13   21   15   22   35   13   24   11   16   17    14
  32  |    7   15    6   12    9    3   14    8    6   14    3 |    13   16   15   21   18   15   22   21   15   18    15
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |   11   19    7   12   17    5   15   10   13   17      |T   22   30   24   29   31   23   30   25   25   25    22
 WRMS |    9   19    6   11   14    4   15    9    8   14      |NE  15   24   18   23   25   17   25   19   17   18    16
 MEDI |    9   17    6   12   15    4   14    9   10   14      |MD  18   27   19   25   26   17   27   21   19   20    17

Table 3.1672.3   GPS week: 1672   Day: 3   MJD: 55951.000                            

        Weighted Average                                            Orbit Dynamics (7 days)
 PRN  |  cod  emr  esa  gfz  grg  igr  jpl  mit  ngs  sio  IGS |   cod  emr  esa  gfz  grg  igr  jpl  mit  ngs  sio   IGS
------+--------------------------------------------------------+---------------------------------------------------------
   1  |    7   13    7   12   11    2   15   11   10   14    3 |    28   26   27   33   33   27   32   34   28   25    27
   2  |    8   22    5   13   13    4   16   11    6   24    4 |    19   29   18   22   21   16   25   19   18   20    17
   3E |   16   26   13   12   20    9   23   17   45   39    8 |    26   31   21   21   24   21   27   18   48   30    18
   4  |    8   10    7   11   11    3   10    5    9   11    3 |    15   17   21   32   27   22   22   22   25   18    20
   5  |    9   15    7   30    8    5   16    9    8   19    5 |    18   24   21   34   24   19   28   20   20   21    19
   6E |   12   30   12   16   20    9   20   11   26   17    6 |    75   92   85   91   92   81   91   87   81   91    85
   7  |    5   18    5   11   18    4   13    6    8   13    3 |    13   24   18   19   29   12   22   14   15   13    15
   8  |   11   13    6    7   11    3   11    7    8   11    3 |    20   30   26   27   26   22   32   22   23   19    22
   9  |    8   15    7   10    9    4    9    8    8   15    3 |    17   25   20   25   21   19   21   21   22   20    18
  10  |    9   13    8   10   10    3    9    7    8   13    3 |    18   20   27   34   27   23   25   25   23   24    24
  11  |   10   16    5    7   17    5   12    9   13    8    3 |    21   26   27   29   32   23   28   30   28   24    24
  12  |    8   22    5   10   20    4   17    8    9   14    4 |    16   29   20   26   26   19   28   19   21   20    18
  13E |    9   20    7   12   13    6   12   24   11   12    5 |    26   31   25   28   32   23   27   29   29   26    24
  14E |   13   19    7    9   12    4    9   11    9   24    4 |    58   67   65   62   66   61   62   63   65   63    63
  15  |    6   22    5   13   17    3   17    7   10   15    4 |     8   27   11   20   19    9   20   14   14   17     9
  16  |    7   25    9   11   15    4   14    7    9   15    4 |    14   29   17   20   21   15   24   14   14   14    14
  17E |    8   18    7   11   12    3   18   10    9   10    4 |    18   25   19   27   26   17   27   16   18   18    18
  18  |    9   16    6   15   10    3   14    8    9   21    4 |    21   30   25   39   26   23   27   24   22   25    23
  19E |    8   26    7   11   19    4   11   15   17   12    4 |    12   29   14   19   21   13   19   16   17   14    11
  20  |    6   15    4   10   10    4   11    8    7   22    3 |    18   22   21   25   21   18   23   22   20   21    19
  21  |    6   18    6   11   10    4   15   11    9   28    4 |    18   25   19   24   24   17   23   19   20   25    17
  22  |    7   16    6    9    9    3   10   10   10   16    3 |    20   30   25   32   29   23   30   26   27   25    24
  23  |    8   27    7   13   16    3   16   13    9   10    4 |    21   30   23   25   28   21   26   23   25   20    21
  25  |   10   15    6   10   17    4   14    9    7   11    3 |    12   22   21   24   27   16   27   20   17   17    17
  26E |   12   24   10   16   17    5   25   16   14   24    5 |   108  115  112  111  109  113  112  114  111  110   110
 X27  |   10   18    7   11   11    4   10    8    9  ---    3 |    15   25   20   25   21   19   24   20   22  ---    18
  28  |    6   20    5   11   15    4   13    7    8   11    3 |    13   30   19   19   27   14   24   14   15   11    15
  29E |    7   24    7   10   10    3   19   13    9   11    4 |    75   77   78   80   78   76   79   77   77   75    77
  30  |    7   15    6   12   17    4    9    6    9   17    3 |    10   21   14   17   18   12   19   12   14   21    12
  31  |    7   19    8   11   20    3   11    7   11   13    4 |    11   25   16   22   32   12   19   11   18   14    14
  32  |    7   18    7    8   10    3   16    9   11   16    3 |    13   17   17   22   21   15   19   22   17   17    16
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |    9   20    7   12   14    4   15   11   13   17      |T   25   33   28   33   33   26   32   28   29   28    26
 WRMS |    8   20    7   14   12    4   14    9    8   16      |NE  15   24   20   25   24   17   24   19   19   18    17
 MEDI |    8   18    7   11   13    4   14    9    9   14      |MD  18   27   21   25   26   19   26   21   22   20    18

Table 3.1672.4   GPS week: 1672   Day: 4   MJD: 55952.000                            

        Weighted Average                                            Orbit Dynamics (7 days)
 PRN  |  cod  emr  esa  gfz  grg  igr  jpl  mit  ngs  sio  IGS |   cod  emr  esa  gfz  grg  igr  jpl  mit  ngs  sio   IGS
------+--------------------------------------------------------+---------------------------------------------------------
   1  |   11   12    4   10   13    3   15   10   10   18    3 |    24   24   28   31   32   24   29   33   29   30    27
   2  |    9   23    7   13   12    6   16    9    8   24    4 |    16   27   17   23   20   16   25   18   15   19    16
   3E |   16   22    8   12   24    8   18   25   45   23    7 |    29   35   27   32   27   30   32   37   58   26    29
   4  |    7   10    4   10   15    6    8    6   10   12    3 |    19   21   24   26   29   22   25   25   25   21    23
   5  |   10   14    6   29   11    8   15    6    9   21    4 |    16   21   19   33   24   18   25   20   23   22    18
   6E |   14   21    8   15   20   12   18   16   22   20    5 |    75   79   81   88   96   78   90   89   79   93    84
   7  |    7   17    6   10   19    4   13    5   11   12    3 |    11   22   17   18   27   12   21   11   18   11    14
   8  |   10   10    5    8   14    5   10   10    9    9    3 |    14   20   18   20   17   15   20   15   21   12    15
   9  |    8   14    7    9   10    4    9   11   10   13    3 |     9   17   13   16   14    9   17   14   16   14    11
  10  |   11   14    5    9   13    4    9    5    9   14    3 |    18   19   21   30   25   20   24   23   24   22    21
  11  |   13   18    5    8   21    5   11   10   11    9    4 |    18   25   22   26   32   19   25   28   27   23    21
  12  |    9   22    6   11   16    4   19    9   11   14    4 |    16   30   20   26   27   17   30   20   21   20    19
  13E |    8   21    5   10   19    3   11    9   14   12    4 |    22   31   21   28   28   22   27   25   20   26    21
  14  |   12   19    5    7   17    4   11    9    7   15    3 |    30   38   39   41   43   35   37   36   34   33    35
  15  |    7   22    6   10   19    3   19   10    8   13    4 |    10   26   14   18   22   11   21   14   16   15    11
  16  |    7   26    8   10   14    5   16    7    7   17    4 |    12   31   16   21   20   14   25   14   16   13    14
  17E |    7   17    5   12   15    3   17    9    7   13    3 |    15   23   20   26   25   15   25   16   15   19    17
  18  |   10   15    8   23   16    3   13   11   11   20    4 |    18   24   21   42   27   20   26   23   18   23    20
  19E |    7   20    6   10   14    4   13   10    9   10    3 |    11   21   16   17   15   10   16   14   14   10    12
  20  |    9   14    5   14    8    5   11    5   10   21    3 |    18   20   19   23   19   18   24   20   19   20    18
  21  |    8   18    7    9   15    3   17   11   11   28    4 |    16   27   21   24   30   18   27   19   22   26    18
  22  |    9   15    5    8   13    5   12    7    9   16    3 |    17   27   26   33   33   21   28   26   23   26    24
  23  |    9   28    7   12   21    3   15    8   13    9    4 |    13   29   16   19   24   14   22   16   16   12    14
  25  |   10   14    6   10   17    3   15    9    9   12    3 |    13   20   19   17   25   13   27   18   19   16    15
  26E |   18   16    9   16   16    9   20   17   16   33    6 |    93   97   90   94   91   89   98   97   90   94    92
  27  |   11   18    6   10   14    5   10    9   11   13    3 |    10   22   15   18   17   12   22   16   17   13    13
  28  |    7   18    8   12   15    4   12    9   10   11    3 |    16   28   20   26   28   16   26   17   19   15    17
  29E |   10   24    8   13   11    4   17   14   12   11    4 |    46   55   48   47   50   43   49   47   49   47    47
  30  |    7   13    4    9   14    6   11    8    8   12    3 |     9   19   14   18   13   10   21   14   14   13    12
  31  |    7   17    6    8   20    4   14    8    8   15    3 |     8   24   16   21   31   12   22   12   11   15    14
  32  |    9   16    5   12    8    4   16   13   14   17    4 |    14   13   15   19   19   13   19   22   16   19    14
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |   10   18    6   12   16    5   14   11   13   17      |T   21   29   24   29   30   22   29   25   25   24    23
 WRMS |    9   18    6   11   15    5   13    9    9   17      |NE  14   22   18   22   23   15   23   18   19   17    16
 MEDI |    9   17    6   10   15    4   14    9   10   14      |MD  16   24   20   26   27   17   25   20   19   20    18

Table 3.1672.5   GPS week: 1672   Day: 5   MJD: 55953.000                            

        Weighted Average                                            Orbit Dynamics (7 days)
 PRN  |  cod  emr  esa  gfz  grg  igr  jpl  mit  ngs  sio  IGS |   cod  emr  esa  gfz  grg  igr  jpl  mit  ngs  sio   IGS
------+--------------------------------------------------------+---------------------------------------------------------
   1  |    9   15    9    8   12    3   15   10   13   18    4 |    25   22   24   23   24   22   24   28   30   25    22
   2  |    7   23    8   11   11    4   16   10    6   23    4 |    13   25   12   19   20   11   21   15   16   18    12
   3E |   12   20   10   13   25    5   17   23   45   25    7 |    26   30   22   24   27   24   24   31   53   26    23
   4  |    6   11    5    9   13    2    8    8    8   10    2 |    16   17   17   25   24   19   20   20   19   18    18
   5  |    8   16   11   31   13    5   15    9   10   25    5 |    13   23   18   30   22   15   23   16   18   16    14
   6E |   13   19   10   14   13   10   18   24   21   26    6 |    72   79   78   86   90   76   87   87   74   88    80
   7  |    6   21    8    9   15    3   13    8    8   13    3 |    13   24   16   19   25   14   19   11   11   13    12
   8  |    9   12    6    9   12    4   13   13   10   11    3 |    17   24   23   25   22   18   26   21   21   18    19
   9  |    7   15    8   11   11    4   12   10    9   15    3 |    16   24   20   21   19   17   23   19   20   20    17
  10  |    9   12    6    8   11    3    8    5    8   15    3 |    14   15   20   27   23   17   20   19   18   19    18
  11  |    8   22    4    8   19    4   11    9   12   11    4 |    20   28   19   25   30   19   23   25   25   23    20
  12  |    7   24    6   11   14    5   17    7    7   15    4 |    15   28   14   23   22   14   23   13   18   13    13
  13E |   10   19    7   10   12    4    9   12    7   11    3 |    35   41   37   40   47   33   38   32   34   33    34
  14  |    5   17    6    5   22    2    7   10    9   12    3 |    20   27   24   29   36   23   26   22   25   20    22
  15  |    5   24    6    9   20    3   17    7   10   12    4 |     8   27   14   18   24    9   18   13   13   13     9
  16  |    6   22    7   10   12    5   15    6    6   19    3 |    14   28   16   22   22   17   25   15   15   19    15
  17E |    6   18    4   10   15    4   14   10    9   13    3 |    17   25   21   28   26   17   25   18   17   22    19
  18  |    9   19    7   18   17    3   13   11   15   23    4 |    17   30   20   39   24   21   25   21   24   24    20
  19E |    6   20    8   15   20    3   13    7   10    8    4 |    15   26   17   25   26   16   21   16   20   17    15
  20  |    9   15    4   11    8    5   12    8   10   19    3 |    18   21   15   18   21   14   22   19   19   20    15
  21  |    7   19    7    8   14    3   15   12   12   28    4 |    13   24   15   19   24   15   21   17   23   25    14
  22  |    7   15    6    8   12    3   13    9    8   23    3 |    16   25   20   28   27   17   25   20   19   24    19
  23  |    7   24    6    9   22    2   12    8   10    8    4 |    20   29   20   22   32   18   22   17   20   18    18
  25  |    8   12    7    8   14    4   13   11   10   12    3 |    12   17   17   18   22   12   24   15   17   12    13
  26  |    8   17    7   10   13    6   19   11   11   24    4 |   121  124  125  124  122  121  124  123  118  119   122
 X27  |    9   19    4    9   13    3   14    9   11  ---    4 |    14   25   19   22   17   17   25   19   21  ---    16
  28  |    6   18    6   13   14    3   12   10    8   11    3 |    13   28   19   22   29   15   23   12   18   11    15
  29E |    7   24    8    9   17    4   18   13   12   12    4 |    60   64   64   64   59   62   62   64   64   65    62
  30  |    8   17    7   11   13    5   15    6    6   12    3 |     9   23   16   21   17   15   21   12   15   17    14
  31  |    6   19    6   10   17    5   16   10    8   13    3 |     9   26   17   22   32   17   25   11   15   14    15
  32  |   10   17    5    6    9    6   13   18   13   18    4 |    15   13   14   15   20   15   16   26   17   22    14
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |    8   19    7   12   15    4   14   11   13   17      |T   22   31   25   30   31   23   29   25   27   26    23
 WRMS |    8   19    7   10   14    4   13   10    8   16      |NE  14   23   17   21   22   15   22   17   18   17    15
 MEDI |    7   19    7   10   13    4   13   10   10   13      |MD  16   25   19   23   24   17   23   19   19   19    17

Table 3.1672.6   GPS week: 1672   Day: 6   MJD: 55954.000                            

        Weighted Average                                            Orbit Dynamics (7 days)
 PRN  |  cod  emr  esa  gfz  grg  igr  jpl  mit  ngs  sio  IGS |   cod  emr  esa  gfz  grg  igr  jpl  mit  ngs  sio   IGS
------+--------------------------------------------------------+---------------------------------------------------------
   1  |   10   15    6    9   15    4   13   12    9   20    4 |    32   30   32   38   40   31   34   41   34   36    33
   2  |    6   21    5   10   11    5   15    6    6   24    3 |    18   30   18   24   23   17   24   18   19   22    17
   3E |   13   27    8   12   16    8   17   23   40   25    7 |    32   39   28   33   33   33   31   33   62   35    31
   4  |    7   12    6   12   16    4    8    8   10   11    3 |    25   23   29   38   39   28   30   32   31   27    29
   5  |    6   13    6   12   12    4   15    8    8   30    4 |    19   25   23   33   32   23   28   24   23   34    23
   6E |   10   22    6   15   14   12   18   18   20   26    5 |    79   88   90   96  101   85   94   94   82   98    89
   7  |    6   21    6   11   16    4   13    7    7   13    3 |    14   25   18   22   25   14   21   10   13   13    13
   8  |    9   15    6   10   13    5   12   13   10   12    3 |    15   21   17   25   20   16   25   20   17   15    16
   9  |    8   14   11   10   12    3    9    9    9   16    3 |    11   23   17   22   16   13   22   12   16   13    12
  10  |    7    9    7    9   15    4    8    7   11   18    3 |    22   21   26   38   38   26   27   29   28   27    27
  11  |    8   19    9   11   20    5   10   15   10   15    4 |    23   29   26   34   36   23   29   33   25   27    25
  12  |    7   22    7   12   17    6   20    9    7   16    4 |    20   30   21   23   25   19   31   17   22   18    19
  13  |    9   25    9   12   27    3   13    9   12   11    4 |    27   30   24   32   39   27   34   27   27   28    26
  14  |    6   15    6    7   19    4    8   13   10   18    3 |    30   33   36   43   43   33   32   32   34   27    33
  15  |    6   26    6   10   19    4   18    7   12   14    4 |    10   31   10   20   23   10   21   14   14   15    10
  16  |   10   25    8   13   14    4   14   11    8   20    4 |    17   33   17   23   23   18   28   19   16   20    17
  17E |    9   19    7   10   15    5   17   11    8   15    4 |    17   25   25   31   26   21   27   20   20   23    21
  18  |    8   17    5   22   14    4   13   10   10   30    4 |    20   29   23   48   28   23   27   26   21   35    24
  19E |    7   17   10   12   13    5   11   12   10   19    4 |    12   22   18   22   18   10   17   14   13   16    12
  20  |   10   17    6   13    9    5   14   10    9   19    4 |    26   28   25   28   29   26   29   26   26   27    24
  21  |    6   21    7    9   13    4   17   12    9   27    4 |    18   27   20   25   27   18   24   20   21   27    18
  22  |    8   16    7    9   11    7    9    9   10   32    4 |    26   31   30   36   40   26   33   32   26   36    29
  23  |    8   24    9    9   23    3   13   12   10   12    4 |    20   32   21   23   28   18   28   18   23   21    19
  25  |    6   12    5   10   13    4   13    8   10   11    3 |    14   17   19   18   23   16   25   14   17   16    15
  26  |    9   19    8    7   12    6   18    9   13   24    4 |   105  106  109  110  112  110  106  110  111  114   109
 X27  |   10   18    7    9   13    5   10   12   11  ---    4 |    12   25   18   22   19   16   23   16   20  ---    15
  28  |    7   18    8    9   18    4   13   11    7   13    3 |    17   29   20   21   30   17   26   16   16   15    17
  29E |    7   24    6    8   14    4   16   13    5    9    3 |    52   56   56   59   55   54   57   55   55   53    54
  30  |    8   20    7    9   18    5   11    7    8   17    3 |     8   26   13   18   18   11   19   10   13   17    10
  31  |    7   21    8   13   17    4   14   11    9   15    4 |    12   25   18   23   32   12   22   10   18   12    14
  32  |   11   16    6   18   14    4   17   22   11   22    5 |    16   16   15   31   26   17   19   30   21   25    17
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |    8   19    7   11   16    5   14   12   12   19      |T   24   32   27   34   34   26   32   28   28   29    26
 WRMS |    8   19    7   10   15    4   14   10    8   24      |NE  17   25   20   26   27   18   25   20   20   21    18
 MEDI |    8   19    7   10   14    4   13   11   10   17      |MD  19   29   21   28   28   19   27   20   21   25    19



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 4.1672   GPS week: 1672   MJD: 55948.0-55954.0

CENT| CLK EPO  |        BRUS       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 2975 |U    6     6    18 |U   12    14    40 |U   35    27   107 |
emr | emr 2965 |    10    12    25 |U   14    16    49 |    38    29   127 |
esa | esa 2962 |     7     7    20 |U   11    13    39 |    33    27   109 |
gfz | gfz 2950 |U   10     9    24 |U   19    18    54 |U   42    29   136 |
grg | grg 2961 |     9    11    28 |U   15    17    57 |    38    31    92 |
igr | igr 2968 |     6     7    18 |    12    13    39 |    35    27   109 |
igs | igs 2943 |     7     8    20 |    12    13    37 |    41    30   125 |
jpl | jpl 2950 |U    9    12    24 |U   13    16    50 |    41    29   100 |
mit | mit 2976 |U    7    10    24 |U   16    16    53 |U   45    44   129 |



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 5.1672.0   GPS week: 1672   Day: 0   MJD: 55948.0

CENT| CLK EPO  |        BRUS       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 2976 |     6     5    20 |    14    14    34 |    11    12    11 |
emr | emr 2964 |    12    11    29 |    14    14    41 |    11    14    22 |
esa | esa 2976 |     7     9    25 |    15    12    37 |     5    11    13 |
gfz | gfz 2962 |     8    10    29 |    16    12    43 |    13    12    20 |
grg | grg 2976 |     9    12    33 |    18    11    45 |    19    10    23 |
igr | igr 2976 |     7     7    22 |    15    12    34 |    11    11    13 |
igs | igs 2949 |     7     9    25 |    15    13    36 |    10    11    12 |
jpl | jpl 2964 |     9    12    28 |    15    14    42 |    11    12    19 |
mit | mit 2976 |     8    10    31 |    17    13    48 |    22    34    19 |

Table 5.1672.1   GPS week: 1672   Day: 1   MJD: 55949.0

CENT| CLK EPO  |        BRUS       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 2975 |     8     7    18 |    15    18    49 |    29    24   210 |
emr | emr 2963 |    12    15    33 |    17    15    51 |    31    19   204 |
esa | esa 2880 |     8    10    21 |    14    18    53 |    45    26   220 |
gfz | gfz 2870 |     8    11    24 |    25    17    66 |    49    25   224 |
grg | grg 2880 |     9    12    27 |    15    16    61 |    50    28    48 |
igr | igr 2944 |     8     8    20 |    15    17    47 |    42    24   218 |
igs | igs 2913 |    10    13    26 |    16    18    56 |    44    23   221 |
jpl | jpl 2872 |    11    15    30 |    16    17    66 |    52    28    38 |
mit | mit 2976 |     9    13    28 |    16    18    57 |    59    61   310 |

Table 5.1672.2   GPS week: 1672   Day: 2   MJD: 55950.0

CENT| CLK EPO  |        BRUS       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 2976 |     5     7    15 |    17    18    46 |    60    55   154 |
emr | emr 2964 |    10    13    28 |    23    24    69 |    56    54   148 |
esa | esa 2976 |     6     7    19 |    17    18    43 |    48    54   162 |
gfz | gfz 2963 |     6     8    22 |    21    22    51 |    54    52   172 |
grg | grg 2976 |    12    24    40 |    21    30    88 |    50    59   159 |
igr | igr 2976 |     5     7    16 |    17    18    45 |    51    53   160 |
igs | igs 2939 |     5     8    18 |    17    19    43 |    58    54   151 |
jpl | jpl 2955 |     6    12    23 |    20    23    74 |    50    52   160 |
mit | mit 2976 |     7    11    32 |    24    26    95 |    74    58   137 |

Table 5.1672.3   GPS week: 1672   Day: 3   MJD: 55951.0

CENT| CLK EPO  |        BRUS       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 2976 |     5     5    19 |     8     8    31 |    66    16   166 |
emr | emr 2966 |    12    14    20 |     9    12    34 |    64    20   166 |
esa | esa 2976 |     6     7    19 |     8     7    27 |    58    15   152 |
gfz | gfz 2964 |     7     7    22 |    16    20    45 |    65    13   181 |
grg | grg 2976 |     8     9    25 |    14    10    42 |    60    19   149 |
igr | igr 2976 |     6     7    20 |     8     7    32 |    61    14   159 |
igs | igs 2946 |     6     7    20 |     8     8    29 |    62    13   163 |
jpl | jpl 2966 |     9    15    24 |     8     9    26 |    60    15   174 |
mit | mit 2976 |     7    12    20 |    15    11    44 |    77    57   188 |

Table 5.1672.4   GPS week: 1672   Day: 4   MJD: 55952.0

CENT| CLK EPO  |        BRUS       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 2976 |     6     7    17 |     8    13    47 |    64    66   178 |
emr | emr 2968 |     8    11    25 |    10    22    72 |    61    59   203 |
esa | esa 2976 |     7     9    19 |     7    14    43 |    60    67   186 |
gfz | gfz 2965 |     8    13    23 |    17    16    54 |    64    67   199 |
grg | grg 2975 |     8     9    31 |    12    25    83 |    68    75   199 |
igr | igr 2976 |     7     9    19 |     8    14    45 |    62    66   182 |
igs | igs 2937 |     6     9    18 |     7     9    29 |    65    70   188 |
jpl | jpl 2968 |     9    13    23 |    11    22    73 |    64    62   193 |
mit | mit 2976 |     6    12    19 |    10    17    53 |    71    79   197 |

Table 5.1672.5   GPS week: 1672   Day: 5   MJD: 55953.0

CENT| CLK EPO  |        BRUS       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 2976 |     7     5    20 |     9     9    31 |     6     6    12 |
emr | emr 2968 |     9     7    21 |    14    10    40 |     8     7    20 |
esa | esa 2976 |     7     5    20 |     9    10    31 |     6     7    13 |
gfz | gfz 2964 |    15     6    30 |    20    16    46 |    10     8    20 |
grg | grg 2973 |     7     6    20 |    14    10    41 |     7     8    20 |
igr | igr 2975 |     7     5    16 |     9     9    30 |     5     7    12 |
igs | igs 2968 |     7     5    19 |    10     9    30 |     6     7    13 |
jpl | jpl 2961 |     8     5    17 |    10     9    35 |     6     7    18 |
mit | mit 2976 |     8     5    20 |    14    11    42 |     7     6    17 |

Table 5.1672.6   GPS week: 1672   Day: 6   MJD: 55954.0

CENT| CLK EPO  |        BRUS       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 2976 |     6     5    16 |    10    16    45 |     7     8    16 |
emr | emr 2968 |    10    11    21 |    10    14    35 |  ----  ----  ---- |
esa | esa 2976 |     6     5    17 |     9    14    39 |     8     9    18 |
gfz | gfz 2967 |    17     8    21 |    19    22    73 |  ----  ----  ---- |
grg | grg 2976 |     8     7    21 |    11    16    40 |    15    18    43 |
igr | igr 2953 |     6     5    17 |     9    14    41 |    11    11    20 |
igs | igs 2953 |     7     6    16 |     9    14    37 |  ----  ----  ---- |
jpl | jpl 2968 |     8    11    24 |    12    14    32 |  ----  ----  ---- |
mit | mit 2976 |     7     7    18 |    13    14    33 |     8    12    32 |


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    : 21-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 6.1672   GPS week: 1672   MJD: 55948.500-55954.500

                                                         AC LOD  AC LOD
CENT  FLAG  |   Xpole   Ypole     Xrt     Yrt    LOD |    BIAS  BIAS RMS
            |   [uas]   [uas]   [uas/d] [uas/d]  [us]|    [us]    [us]
------------+----------------------------------------+------------------
cod   xxxxx |      31       0      15     101      0 |       7     15
            |      24      14      89     105      4 |       1
emr   uuuxu |      29      -5     -10      27    -12 |      25     30
            |      46      27      83     231      6 |       5
esa   uuuuu |       0     -15      66     -10      2 |      -7     15
            |      11      20      73      64      4 |       1
gfz   uuuuu |     -15      38     -29      -7      0 |      10     16
            |      24      25      41     103      5 |       1
grg   uuuux |      28      -8       1     -43    -13 |      25     44
            |      17      16      49      74     23 |       4
igr   xxxxx |     -24       9      50      37     -3 |       1     15
            |      14      17      52      56      3 |       1
irf   xxxxx |       2       6      -3       2      3 |       0     12
            |       5       9      35      37      6 |       1
jpl   uuuuu |     -19      14     -82    -122    -11 |       1     19
            |      33      30      85      91      8 |       5
mit   uuuuu |     -24       9     -83       1      2 |      13     17
            |      19      25      92      57      2 |       1
ngs   uuuuu |     -14     -13      53      78      5 |      -2     12
            |      47      25     109     108      7 |       3
sio   uuuuu |      79      -2      14     118     -2 |      20     25
            |      16      17     111     102     12 |       5


Table 7.1672.0   GPS week: 1672   Day: 0   MJD: 55948.500

                                                         AC LOD  AC LOD
CENT  FLAG  |   Xpole   Ypole     Xrt     Yrt    LOD |    BIAS  BIAS RMS
            |   [uas]   [uas]   [uas/d] [uas/d]  [us]|    [us]    [us]
------------+----------------------------------------+------------------
cod   xxxxx |      15      -4    -160     257     -1 |       5     14
emr   uuuxu |     106      -6     -19     428     -4 |      29     32
esa   uuuuu |     -15     -38      71     -42      1 |      -8     16
gfz   uuuuu |     -58      65     -59    -114      0 |       9     15
grg   uuuux |      35     -34      73      75    -38 |      29     44
igr   xxxxx |     -32      -2     150      10      3 |       0     14
irf   xxxxx |       9      16     -70      74      4 |      -2     12
jpl   uuuuu |       7       3      91    -150     -8 |       6     18
mit   uuuuu |       2      45    -271      66      1 |      11     16
ngs   uuuuu |     -57     -12     206     120      7 |      -6     13
sio   uuuuu |     112      26    -220      49    -22 |      28     32

Table 7.1672.1   GPS week: 1672   Day: 1   MJD: 55949.500

                                                         AC LOD  AC LOD
CENT  FLAG  |   Xpole   Ypole     Xrt     Yrt    LOD |    BIAS  BIAS RMS
            |   [uas]   [uas]   [uas/d] [uas/d]  [us]|    [us]    [us]
------------+----------------------------------------+------------------
cod   xxxxx |      79      13      68      26     -3 |       7     15
emr   uuuxu |      49      -6    -105     222    -11 |      29     33
esa   uuuuu |      -6      -6     124     -73      0 |      -7     16
gfz   uuuuu |       2      26     -52     -43      9 |      10     17
grg   uuuux |      49      -5     -76      -3    -12 |      28     44
igr   xxxxx |     -39      36      42      52     -3 |       1     15
irf   xxxxx |       3      -6     -19     -44      7 |      -1     13
jpl   uuuuu |     -68      68     -94      15    -18 |       6     18
mit   uuuuu |     -42      -9    -100     -25      0 |      13     18
ngs   uuuuu |      40     -30      66     264     10 |      -4     14
sio   uuuuu |      70     -20      40     -59    -17 |      26     31

Table 7.1672.2   GPS week: 1672   Day: 2   MJD: 55950.500

                                                         AC LOD  AC LOD
CENT  FLAG  |   Xpole   Ypole     Xrt     Yrt    LOD |    BIAS  BIAS RMS
            |   [uas]   [uas]   [uas/d] [uas/d]  [us]|    [us]    [us]
------------+----------------------------------------+------------------
cod   xxxxx |      20      -2      31     175      6 |       8     15
emr   uuuxu |      60       2      23      91    -10 |      29     33
esa   uuuuu |       1       3     -12      46      2 |      -5     14
gfz   uuuuu |     -25      52     -26    -162     -1 |      12     17
grg   uuuux |      50     -11       8     -44    -37 |      26     43
igr   xxxxx |     -21     -11      74     139      1 |       2     15
irf   xxxxx |       6       7       9      -5      5 |       0     13
jpl   uuuuu |     -28     -26     -91    -247    -11 |       5     18
mit   uuuuu |     -37      -7     -46      37      1 |      14     18
ngs   uuuuu |     -16     -12     128     145      6 |      -2     12
sio   uuuuu |      81      -6      68     108     -4 |      23     29

Table 7.1672.3   GPS week: 1672   Day: 3   MJD: 55951.500

                                                         AC LOD  AC LOD
CENT  FLAG  |   Xpole   Ypole     Xrt     Yrt    LOD |    BIAS  BIAS RMS
            |   [uas]   [uas]   [uas/d] [uas/d]  [us]|    [us]    [us]
------------+----------------------------------------+------------------
cod   xxxxx |      13     -20     -52     -13     -1 |       7     15
emr   uuuxu |       0      20     -77    -197    -22 |      27     31
esa   uuuuu |       6      14     142      -3      1 |      -6     14
gfz   uuuuu |     -14      39     -40       8     -3 |      11     17
grg   uuuux |      29     -21     -34     -30    -30 |      22     43
igr   xxxxx |     -13      23       0      33     -6 |       2     15
irf   xxxxx |      -2      -2      15       0      9 |      -1     12
jpl   uuuuu |      -8      33    -161    -200    -17 |       2     18
mit   uuuuu |     -42     -18     -26      38      2 |      14     18
ngs   uuuuu |       1     -52     -39      53     10 |      -1     12
sio   uuuuu |      76     -12      54     134      3 |      19     24

Table 7.1672.4   GPS week: 1672   Day: 4   MJD: 55952.500

                                                         AC LOD  AC LOD
CENT  FLAG  |   Xpole   Ypole     Xrt     Yrt    LOD |    BIAS  BIAS RMS
            |   [uas]   [uas]   [uas/d] [uas/d]  [us]|    [us]    [us]
------------+----------------------------------------+------------------
cod   xxxxx |      46      20      75     160      2 |       6     15
emr   uuuxu |      -4      22     -37    -114    -16 |      23     29
esa   uuuuu |      13     -22      35      17     -3 |      -7     16
gfz   uuuuu |      10      13      -4      82     -7 |       9     17
grg   uuuux |      18      -4     -16    -117      1 |      20     43
igr   xxxxx |     -25      22      -1      47     -3 |       0     16
irf   xxxxx |      -2       3      43       7      8 |      -1     12
jpl   uuuuu |      30       0    -164    -130    -11 |      -2     21
mit   uuuuu |     -35       8      20      15      0 |      12     17
ngs   uuuuu |     -76      30     -16     -52     10 |      -1     12
sio   uuuuu |      70     -15     123     147      6 |      16     21

Table 7.1672.5   GPS week: 1672   Day: 5   MJD: 55953.500

                                                         AC LOD  AC LOD
CENT  FLAG  |   Xpole   Ypole     Xrt     Yrt    LOD |    BIAS  BIAS RMS
            |   [uas]   [uas]   [uas/d] [uas/d]  [us]|    [us]    [us]
------------+----------------------------------------+------------------
cod   xxxxx |      28     -13      78     119     -1 |       6     15
emr   uuuxu |     -28      -7      -8    -167    -11 |      21     28
esa   uuuuu |     -10     -40     -35      79      6 |      -7     16
gfz   uuuuu |     -23       2      48      78      2 |       9     16
grg   uuuux |       5       9      28    -152     24 |      21     44
igr   xxxxx |     -38       1      48      23     -6 |       0     16
irf   xxxxx |      -3      17      12     -25     -2 |       1     12
jpl   uuuuu |     -21      17     -70    -111    -16 |      -3     21
mit   uuuuu |      -8      42     -70    -104      2 |      13     18
ngs   uuuuu |      49       0     129     -21     -1 |       1     12
sio   uuuuu |      61      18      46     192      7 |      16     20

Table 7.1672.6   GPS week: 1672   Day: 6   MJD: 55954.500

                                                         AC LOD  AC LOD
CENT  FLAG  |   Xpole   Ypole     Xrt     Yrt    LOD |    BIAS  BIAS RMS
            |   [uas]   [uas]   [uas/d] [uas/d]  [us]|    [us]    [us]
------------+----------------------------------------+------------------
cod   xxxxx |      15       7      65     -17     -6 |       6     14
emr   uuuxu |      19     -58     151     -76     -8 |      17     25
esa   uuuuu |      10     -16     140     -97      8 |      -7     16
gfz   uuuuu |       7      68     -72     100     -2 |       8     16
grg   uuuux |      13      10      27     -30     -1 |      26     46
igr   xxxxx |      -2      -1      34     -48     -6 |      -2     16
irf   xxxxx |       4       9     -10       9     -8 |       2     11
jpl   uuuuu |     -44       4     -85     -31      6 |      -7     20
mit   uuuuu |      -6       4     -87     -22      7 |      12     17
ngs   uuuuu |     -40     -16    -100      34    -10 |       2     12
sio   uuuuu |      85      -6     -14     257      9 |      15     19



More information about the IGSREPORT mailing list