[IGSREPORT-19491] Wk 1622 IGS Final Orbits

Jim Ray igs.acc at noaa.gov
Thu Feb 24 04:30:50 PST 2011


Author:  AC Coordinator / NOAA NGS

sum-file Version 2.0
Final IGS Orbit Combination - Week 1622   (Feb 06, 2011 - Feb 12, 2011)

Contacts: J. Ray       (jim.ray at noaa.gov),
          J. Griffiths (jake.griffiths 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:

igs1622[0-6].sp3  IGS GPS ephemeris files in SP3 format.
igs1622[0-6].clk  IGS GPS satellite and station clocks in clock RINEX format.
igs1622[0-6].cls  IGS GPS clock combination summary report.
igs16227.erp      Earth Rotation Parameters (ERP) and their rates as well as
                  Universal Time (UT1-UTC) and Length Of Day (LOD) associated 
                  with IGS ephemerides.
igs16227.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 they either 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   | GUAT NRIL
                0  |  EMR   | 3 6 26 3 6 26 WTZR WES2 WTZR YELL
                0  |  GFZ   | 6 19 23 26 29 BRMU MAW1 MDVJ NYAL WSRT YELL
                0  |  GRG   | ADIS NRC1 SANT
                0  |  JPL   | 6 25 YELL
                0  |  MIT   | 3 6 9 19 26 3 6 9 19 26 BRMU DAV1 MAW1 BRMU DAV1
                0  |  MIT   | MAW1 WES2
                1  |  COD   | WROC SANT WROC XMIS
                1  |  EMR   | 3 6 26 3 6 26 WTZR HARB WTZR
                1  |  ESA   | PALM
                1  |  GFZ   | 6 17 19 23 26 29 KIRU PERT SUTM
                1  |  GRG   | AMC2
                1  |  JPL   | 3 25 26 GUAT
                1  |  MIT   | 3 6 26 3 6 26 CAS1 MAW1 CAS1 DAV1 MAW1
                2  |  COD   | 26 MDO1 MDO1
                2  |  EMR   | 3 6 3 6 WTZR WTZR
                2  |  ESA   | 26 UNSA
                2  |  GFZ   | 6 17 19 22 29 32 CHAT HARB KIRU MDVJ
                2  |  GRG   | AMC2 GLSV RAMO SANT
                2  |  JPL   | 3 6 25 32 ADIS
                2  |  MIT   | 3 6 32 3 6 32 CAS1 CAS1 IENG
                3  |  COD   | YELL
                3  |  EMR   | 26 WTZR HARB WTZR
                3  |  ESA   | UNSA
                3  |  GFZ   | 17 19 29 BRMU RABT
                3  |  GRG   | AMC2 BRMU SANT
                3  |  JPL   | 3 6 25 ADIS AREQ BRMU DAV1
                3  |  MIT   | 3 6 26 3 6 26 BRMU DAV1 MAW1 BRMU CEDU DAV1 MAW1
                3  |  MIT   | WES2
                4  |  EMR   | 3 6 26 3 6 26 WTZR WTZR
                4  |  ESA   | UNSA
                4  |  GFZ   | 17 19 26 29 DAV1 RAMO
                4  |  GRG   | ADIS AMC2 LPGS SANT
                4  |  JPL   | 3 6 25 26 ADIS DAV1
                4  |  MIT   | 3 6 26 3 6 26 DAV1 MAW1 BRMU DAV1 MAW1
                5  |  COD   | USNO SCH2 USNO
                5  |  EMR   | 3 6 3 6
                5  |  ESA   | SCH2
                5  |  GFZ   | 17 19 26 29 MAW1 MDVJ SCH2 SOFI
                5  |  GRG   | ADIS AMC2 SANT
                5  |  JPL   | 3 6 25 ADIS
                5  |  MIT   | 3 6 3 6 NTUS NTUS
                6  |  COD   | MCM4 MCM4
                6  |  EMR   | 3 6 3 6 WTZR WTZR
                6  |  ESA   | UNSA
                6  |  GFZ   | 6 19 26 29 MDVJ NYAL
                6  |  GRG   | AMC2 SANT
                6  |  JPL   | 3 6 25 ADIS
                6  |  MIT   | 3 6 21 26 3 6 26 DAV1 MAW1 DAV1 HARB MAW1

 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  |  MIT   |   3

 6. Starting on 5-Nov-2006 (GPS Week 1400, day 0, MJD 54044) 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.

 7. Small rotations were applied to all the AC orbit and ERP values in order
    to align them to the IGS05 frame. These rotations were estimated in the IGS
    SINEX combination process, performed by the IGS Reference Frame Coordinator
    at the Institut Geographique National (IGN), and are based on the common
    stations between the individual AC SINEX solutions and the IGS05.snx SINEX
    frame. 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  |     .2    1.2    1.0      -9     -1    -10     .25
       EMR  |    1.6    3.3    5.8      37    -29    -12     .30
       ESA  |    7.8    5.6   -7.3     112   -106   -102     .30
       GFZ  |    -.3     .9     .1       6      4    -33     .34
       GRG  |    5.0    8.3   -2.7      46     66    -98     .42
       JPL  |    3.6    4.2    9.0      38    -36     63     .17
       MIT  |     .6     .6  -14.5       4     -8    -28     .28
       NGS  |    3.5    2.0   -8.0      37   -105      9     .23
       SIO  |    6.1     .5    2.7      -1    -93    -19     .39


 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 on 5-Nov-2006 (GPS Week 1400, day 0, MJD 54044) the absolute antenna
    model is introduced (IGSMAIL #5272). The antenna phase center offsets and
    phase center variations are given in the file:
        ftp://igscb.jpl.nasa.gov/pub/station/general/igs05.atx

    
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 1.1622.a). It also displays the computed satellite
position sigmas for the combined orbits (table 1.1622.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 2.1622.[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 3.1622.[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 5.1622.0-6).

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 1622 summary.                       (Feb 06, 2011 - Feb 12, 2011)

Table 1.1622.a   GPS week: 1622   MJD: 55598.000-55604.000

         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  238|    0     0     5    63   -44     7  -.22   10    9 |     -28    -570     15     75
        |    0     0     1    12    21    23   .02           |     488     796
emr   88|    0     0     8   -35   -28    23   .39   19   19 |   -3238     283     15    100
        |    2     1     1    21    40    19   .04           |    1108     361
esa  150|    2     0    -1   -95    63   -78   .22    8    8 |     236   -1303     13    117
        |    0     0     1    20    19    24   .01           |    1509    1870
gfz  189|    0    -1    -5    56   -56    48  -.14   11   11 |     320    -235     22    108
        |    0     0     1    80    97    11   .03           |     223     392
grg  135|    2     0    -9   -55  -184   -33   .65   15   14 |     147    -226     42    212
        |    1     1     1    27    33    19   .02           |     275     402
igr  n/a|    0     0     0    47   -29    24  -.03    5    5 |    6497     192     18     65
        |    0     0     0    22    50    27   .01           |    1082     335
jpl  134|    0     0    12   -42    23    25   .43   20   19 |    1192      10     18     98
        |    1     1     0    16    18    38   .03           |     812     443
mit  262|   -2     0    -5    64   -72    20  -.33   17    9 |       0     -19     20    141
        |    0     0     0    12    31     9   .05           |     319     537
ngs  222|    0     1    -3    -5   152    24  -.23   11    8 |  -81818  115361   2300   3679
        |    0     0     1    39    60    14   .03           |  216646  307323
sio  260|   -1     0    10    53   107     6  -.23   18   17 |     ---     ---    ---    ---
        |    1     1     0    20    36    13   .02           |     ---     ---


Table 1.1622.b   GPS week : 1622   MJD: 55598.000-55604.000   

         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  |    0    0    0    0    0    0    0 |
   2  |    5    5    5    5    5    5    5 |
   3  |   11    8   12   11   11    9    9 |
   4  |    4    3    4    3    4    4    4 |
   5  |    4    4    4    4    4    4    4 |
   6  |    7    8    5    5    5    5    5 |
   7  |    4    4    4    4    4    4    5 |
   8  |    4    4    4    4    3    4    4 |
   9  |    4    3    4    3    3    4    4 |
  10  |    3    4    4    3    3    4    4 |
  11  |    4    5    4    4    5    5    5 |
  12  |    5    4    5    5    5    5    5 |
  13  |    4    4    4    4    4    4    5 |
  14  |    4    4    4    4    5    6    4 |
  15  |    5    5    5    5    5    5    5 |
  16  |    5    5    5    5    5    5    6 |
  17  |    4    5    4    4    5    6    5 |
  18  |    4    4    4    5    4    4    5 |
  19  |    4    6    5    5    5    6    5 |
  20  |    4    4    4    4    4    4    5 |
  21  |    5    5    6    5    5    6    6 |
  22  |    4    4    5    4    4    4    4 |
  23  |    5    6    5    5    5    5    5 |
  24  |    4    4    4    4    4    4    4 |
  25  |    5    5    6    5    5    5    5 |
  26  |    4    4    5    5    6    8    5 |
  27  |    4    4    4    4    4    4    4 |
  28  |    4    4    4    4    4    4    5 |
  29  |    5    5    5    4    5    5    5 |
  30  |    4    3    3    3    4    4    4 |
  31  |    4    4    5    5    5    5    5 |
  32  |    4    4    4    4    5    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 2.1622.0   GPS week: 1622   Day: 0   MJD: 55598.000                            

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  238|    0     0     5    40   -55    53  -.21    9    8 |    -755     807     15     83
        |                     48    13                       |
emr   88|    1    -1     8   -63   -60    -8   .42   20   20 |   -5214     218     11    100
        |                     12    39                       |
esa  150|    2     0    -2  -140    53  -121   .21    8    7 |       5    -646     13    146
        |                      7    17                       |
gfz  189|    0    -1    -4   196    23    47  -.12   10   10 |    -109     430     23    144
        |                    -45    52                       |
grg  135|    0     1   -10   -82  -221   -19   .66   16   15 |       0     -64     39    198
        |                     83    91                       |
igr  n/a|    0     0     0    22   -87    48  -.02    5    5 |    4537     301     19     82
        |                      0    28                       |
jpl  134|    1     0    11   -43    15    96   .45   19   18 |    -219     197     18     97
        |                     90  -171                       |
mit  262|   -3     0    -6    80   -33    16  -.29   17   10 |    -337     463     21    161
        |                     12    27                       |
ngs  222|    0     1    -1   -56    89    21  -.20   10    8 | -573126  812304   1962   3436
        |                     16     9                       |
sio  260|   -3     0    10    94   127     3  -.23   18   15 |     ---     ---    ---    ---
        |                    -50     3                       |

Table 2.1622.1   GPS week: 1622   Day: 1   MJD: 55599.000                            

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  238|    0     0     3    63   -38   -24  -.22    8    7 |     801   -1715     13     74
        |                     24   -24                       |
emr   88|    1    -3     8   -42    11    27   .43   19   19 |   -3865     162     17    108
        |                      3   -16                       |
esa  150|    1     0     0   -89    84   -55   .22    8    8 |    2151   -3004     13    119
        |                     16    12                       |
gfz  189|    0    -1    -5    86  -115    62  -.14   10   10 |     592    -346     23    110
        |                     17    40                       |
grg  135|    4     0    -8   -94  -157   -30   .65   14   13 |     681    -853     46    236
        |                     99   -26                       |
igr  n/a|    0     0     0    28   -11    54  -.03    6    5 |    6020     -42     17     60
        |                     -4   -11                       |
jpl  134|    0    -1    12   -12    36   -31   .43   20   19 |    1070    -220     20    100
        |                   -105    -4                       |
mit  262|   -2     0    -5    58   -87    33  -.28   20    9 |     595    -792     20    140
        |                      6    40                       |
ngs  222|    0     2    -4   -43   183    13  -.21   12    7 |     626   -1491   2602   3812
        |                     13   -48                       |
sio  260|   -2     0    11    41    84    12  -.25   18   18 |     ---     ---    ---    ---
        |                    -44     6                       |

Table 2.1622.2   GPS week: 1622   Day: 2   MJD: 55600.000                            

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  238|    0     1     5    56   -26     6  -.20    9    8 |    -288    -358     18     85
        |                     28   -25                       |
emr   88|    1     0     8   -59    25    24   .41   20   20 |   -3700     837     16    116
        |                     24   -23                       |
esa  150|    1    -1     0   -92    46   -70   .21    9    9 |    2256   -2954     14    107
        |                     31    16                       |
gfz  189|    1     0    -6    49  -179    58  -.14   12   10 |     224    -337     23     98
        |                    -35     5                       |
grg  135|    1     0    -8   -50  -154   -61   .64   15   14 |    -196     256     48    234
        |                     46   -50                       |
igr  n/a|    0     0    -2    63    25    20  -.02    6    5 |    6029     629     21     69
        |                    -46     7                       |
jpl  134|    0    -3    11   -53    34    38   .48   19   19 |     841     559     18     92
        |                     18    32                       |
mit  262|   -2     0    -5    56   -66    15  -.29   16    8 |    -313     378     20    133
        |                      4    33                       |
ngs  222|    0     1    -4     7   235    10  -.22   11    9 |    -292    -438   2295   3753
        |                    -82   -71                       |
sio  260|   -1     0     9    33    91   -17  -.20   17   17 |     ---     ---    ---    ---
        |                    -35    19                       |

Table 2.1622.3   GPS week: 1622   Day: 3   MJD: 55601.000                            

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  238|    0     1     5    68   -22     8  -.21    9    8 |    -285    -654     14     61
        |                     22   -40                       |
emr   88|   -2     0     6    -6   -20    46   .39   18   18 |   -3041     550     17    106
        |                     -7    21                       |
esa  150|    2     0    -2   -74    65   -72   .23    8    8 |   -1712    1056     15    124
        |                      5    28                       |
gfz  189|    0    -2    -5   -21  -142    33  -.13   11   10 |     276    -550     23     99
        |                    -47    25                       |
grg  135|    2    -2    -9   -54  -140   -57   .63   15   13 |       0    -396     45    200
        |                     62   -70                       |
igr  n/a|    0     0     0    63    43    33  -.01    5    5 |    6629     517     22     68
        |                    -68    30                       |
jpl  134|    1     1    12   -52    42    14   .43   20   19 |    1372     594     19    106
        |                     64    10                       |
mit  262|   -1     0    -5    58   -83    31  -.33   16    8 |     -80    -244     18    139
        |                     11    45                       |
ngs  222|    0     0    -2    40   218     8  -.28   12    8 |    -287    -695   2340   3679
        |                    -72   -93                       |
sio  260|    0     0    10    45    93    16  -.27   18   16 |     ---     ---    ---    ---
        |                    -31     4                       |

Table 2.1622.4   GPS week: 1622   Day: 4   MJD: 55602.000                            

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  238|    0     0     4    77   -63    13  -.20    9    8 |      38    -260     14     78
        |                     22    -1                       |
emr   88|   -2     0    10   -13   -64     4   .37   19   19 |   -2076    -180     15     96
        |                    -19    37                       |
esa  150|    1     0    -2   -92    74   -52   .21    8    8 |    -838     313     14    111
        |                     10    25                       |
gfz  189|   -1    -1    -5   -51    31    32  -.08   11   11 |     418      -5     21     94
        |                    -25    43                       |
grg  135|    4     0    -7   -15  -213   -31   .66   16   15 |     234      14     38    197
        |                     30    38                       |
igr  n/a|    0     0    -1    81   -48   -30  -.02    6    6 |    7591     -82     16     70
        |                    -67    78                       |
jpl  134|    0     2    13   -47     0     8   .39   21   20 |    2321    -465     18     95
        |                      5    78                       |
mit  262|   -2     0    -6    49   -54     9  -.35   16    9 |    -110     503     20    127
        |                      8    31                       |
ngs  222|    0     0    -4    45    98    31  -.26   12    9 |     129    -387   2323   3624
        |                    -96    31                       |
sio  260|   -1     0    10    38   126    -3  -.21   17   19 |     ---     ---    ---    ---
        |                    -42    -2                       |

Table 2.1622.5   GPS week: 1622   Day: 5   MJD: 55603.000                            

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  238|    0     0     7    63   -76     0  -.22   11   10 |     237   -1240     15     73
        |                     35    16                       |
emr   88|    2     1     9   -23   -78    45   .35   19   19 |   -2271     482     15     88
        |                    -11    52                       |
esa  150|    1     0    -2   -93    34  -100   .24    8    7 |    -692    -222     12    108
        |                     41    49                       |
gfz  189|    0    -1    -6    79    71    52  -.18   12   11 |     438     -75     23    111
        |                    -48    45                       |
grg  135|    1     1    -9   -62  -212    -5   .68   16   14 |     161      69     37    219
        |                     83    40                       |
igr  n/a|    0     0     0    39   -80    15  -.03    5    5 |    7566     305     17     60
        |                    -20    64                       |
jpl  134|    0    -1    12   -57    -2    28   .39   19   18 |    1902    -157     18    102
        |                     41    12                       |
mit  262|   -3     0    -5    81   -54    12  -.39   16   10 |      98     189     21    142
        |                     10    31                       |
ngs  222|    0     1    -1   -10    98    44  -.24   11    7 |     183   -1189   2493   3892
        |                    -31    58                       |
sio  260|    0     1    11    56   170    16  -.25   20   19 |     ---     ---    ---    ---
        |                    -54   -19                       |

Table 2.1622.6   GPS week: 1622   Day: 6   MJD: 55604.000                            

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  238|    0     0     5    76   -26    -4  -.25   11   10 |      50    -576     18     77
        |                     44   -67                       |
emr   88|    2    -2     5   -37    -9    27   .33   19   19 |   -2502     -82     16     88
        |                     -7   -11                       |
esa  150|    2     0    -1   -86    85   -79   .21    7    7 |     488   -3669     13    105
        |                     68    -8                       |
gfz  189|    0    -3    -2    53   -81    50  -.18   13   12 |     404    -765     23    103
        |                    -50    28                       |
grg  135|    0     1    -8   -29  -190   -29   .64   14   14 |     151    -608     41    205
        |                     10   -29                       |
igr  n/a|    0     0     0    30   -45    27  -.05    5    5 |    7113    -282     16     46
        |                    -10    14                       |
jpl  134|   -1     0    12   -29    34    21   .42   20   18 |    1057    -436     17     95
        |                      4   -45                       |
mit  262|   -1     1    -5    67  -129    27  -.42   14   10 |     142    -635     24    145
        |                      7    47                       |
ngs  222|   -1     0    -4   -24   141    38  -.21   11    8 |      36    -574   2091   3558
        |                    -22    25                       |
sio  260|   -1     2    11    64    61    16  -.24   20   18 |     ---     ---    ---    ---
        |                    -63     0                       |

       
       
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 3.1622.0   GPS week: 1622   Day: 0   MJD: 55598.000                            

        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
------+--------------------------------------------------------+---------------------------------------------------------
  X1  |    7  ---  ---  ---  ---   27  ---  ---  ---  ---    0 |    49  ---  ---  ---  ---   73  ---  ---  ---  ---    51
   2  |   10   24    5   15   11    4   24   10    9   29    5 |    16   31   21   25   25   20   34   22   16   24    18
   3E |   17   22   16   12   21   15   21   67   30   21   10 |    22   32   28   20   40   27   39   70   42   31    28
   4  |    8   29    6    9   12    4   11   10    8   16    4 |    31   45   37   36   39   36   39   38   37   33    35
   5  |    7   19    6    9   11    6   22    8    6   25    4 |    20   29   28   28   32   25   32   22   26   23    24
   6E |   16   19   13   11   19    6   17   39   15   25    7 |    85   85   81   84   85   79   90   76   82   87    80
   7  |    8   22    6    8   19    4   18    9    9   17    4 |    11   28   18   13   27   14   27   13   15   19    14
   8  |    8   15    8    7   13    4   10   13   10   11    3 |    12   27   19   12   18   15   26   18   15   15    15
   9  |    8   13    6    9   20    6   14   14    9   11    4 |    22   25   22   24   20   20   26   21   21   24    20
  10  |    9   15    4    6   11    4   11    9    7   19    3 |    17   28   29   29   33   25   26   23   27   22    24
  11  |    7   15    7    9   21    5   21    7    8   12    4 |    23   33   27   31   39   29   32   32   32   26    27
  12  |    7   27    8    8   18    3   20    8    6   20    4 |    21   36   24   21   27   23   31   20   22   16    21
  13E |    8   16    7   11   15    4   18   13    9   13    4 |    29   35   27   29   29   28   36   30   30   34    28
  14E |    8   16    7    6   16    3   17   10    7   13    3 |    35   45   41   37   40   38   47   38   39   41    38
  15  |    9   23    7   12   21    6   22    8    7   17    4 |    19   27   18   20   22   17   28   20   16   21    15
  16  |    7   24   10   11   15    3   26   12   10   19    4 |    22   35   25   23   27   22   36   25   21   22    24
  17E |    6   21    8    8   16    3   24   11    7   13    4 |    11   22   14   11   19   11   23   15   15   12    11
  18  |    8   16    7   15   17    3   19    7    8   21    4 |    18   28   25   29   28   23   31   23   25   26    23
  19E |    7   18    8   12   18    5   24   10   10   13    4 |    21   32   27   23   32   24   32   26   26   25    25
  20  |    6   17    8   12   12    6   17   11    9   24    4 |    26   32   31   34   31   29   30   31   28   29    27
  21  |    8   20    5   10   14    3   25    8   11   31    4 |    24   30   28   26   25   25   32   31   27   45    26
  22  |    7   13    5    8   17    4   19    7    9   19    3 |    23   30   31   29   37   29   34   29   32   29    28
  23E |    8   22    9   10   12    4   23   14   10   11    4 |    26   31   33   32   31   27   31   31   30   26    28
  24  |    7   13    6    8   12    4   12   10   10   15    3 |    36   44   43   47   48   44   43   46   45   45    43
 X25  |   11   16    5    8   16    5   24   12    7  ---    4 |    19   19   17   17   19   17   35   19   16  ---    15
  26E |   11   18    5    9   16    5   14   10   11   18    4 |    61   68   64   60   70   63   68   67   65   71    65
 X27  |    9   14    5   11   14    5  ---   11    7   27    4 |    20   26   23   25   22   20  ---   21   22   33    20
  28  |    6   24    7    8   21    3   19    7    6   17    4 |    17   37   23   15   33   21   35   18   20   16    19
  29E |    8   27   10    8   23    3   23   11   10   16    5 |    17   28   28   17   27   21   26   23   25   27    22
  30  |    5   12    7   10   14    5   12   10    9   10    3 |    15   23   21   21   25   17   25   20   14   20    18
  31  |    7   21    8   11   18    4   19   11    9   13    4 |    12   27   21   21   32   15   26   14   14   16    16
  32  |    8   13    9   11   12    6   13    9    8   21    3 |    16   22   22   23   25   21   23   21   21   27    18
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |    9   20    8   10   16    5   19   17   10   18      |T   24   33   28   27   32   28   34   29   27   29    27
 WRMS |    8   20    7   10   15    5   18   10    8   15      |NE  21   30   25   24   28   25   31   23   23   25    23
 MEDI |    8   18    7    9   16    4   19   10    9   17      |MD  21   30   27   25   29   23   32   23   25   26    24

Table 3.1622.1   GPS week: 1622   Day: 1   MJD: 55599.000                            

        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
------+--------------------------------------------------------+---------------------------------------------------------
  X1  |    6  ---  ---  ---  ---   71  ---  ---  ---  ---    0 |    37  ---  ---  ---  ---  116  ---  ---  ---  ---    39
   2  |    8   22    5   14   11    6   26    7    5   28    4 |    12   26   19   21   23   17   29   17   15   19    15
   3E |   14   19   14   10   23    5   22   87   37   20    8 |    19   28   27   21   36   23   33   83   42   30    25
   4  |    6   10    8   10   15    6   12    7    7   16    3 |    26   28   31   28   33   26   29   27   26   24    26
   5  |    6   16    7    8   11    8   19    7    7   24    3 |    14   29   19   19   26   19   30   16   20   16    18
   6E |   18   18   14   13   16    7   20   40   15   21    7 |    65   72   65   70   69   71   72   87   75   72    71
   7  |    7   20    6    8   19    3   18    7   10   16    4 |    10   23   16   13   27   10   22   12   17   18    12
   8  |    7   16    7    7    9    3   11   11   11   12    3 |     9   23   12   10   16   10   20   14   14   12    11
   9  |    7   14    6    9   12    4   13    8    8   10    3 |    24   26   21   24   23   20   28   26   22   23    22
  10  |    6   12    9    8   12    4   14    8    7   20    3 |    13   17   22   20   22   16   23   16   17   17    16
  11  |    8   16   15   10   21    6   18    9   16   11    4 |    15   23   20   20   31   15   24   21   21   17    15
  12  |    6   26    7    9   15    6   23    7    8   18    4 |    16   32   18   20   24   19   30   17   18   15    17
  13E |    6   18    8    8   17    5   16    9   12   12    4 |    22   30   21   24   31   22   28   25   24   25    22
  14E |    6   18    7    8   15    4   18    6    7   11    3 |    20   33   24   23   29   22   26   22   23   24    21
  15  |    9   30    7   13   17    5   21    8    9   13    4 |    17   35   18   22   25   16   29   21   18   23    18
  16  |    5   24    8   12   13    7   28   11   10   18    4 |    18   28   21   17   28   19   32   20   20   18    19
  17E |    8   22    6    9   16    5   25   12   11   13    4 |     7   19   12   12   16   10   23   14   18   13    10
  18  |    9   17    5   13   10    6   23    8    9   18    4 |    13   24   16   19   19   16   26   16   20   18    15
  19E |    8   22   11   11   12    5   23   28   17   13    5 |    14   25   25   19   21   15   25   22   22   17    15
  20  |    6   17    5   12    9    8   16    9   11   22    4 |    15   22   16   22   19   14   23   19   17   16    14
  21  |   11   20    6   12   10    6   30    6    9   31    5 |    18   22   21   22   17   18   27   21   20   40    19
  22  |    6   16    7   10    9    5   20    5   10   18    3 |    15   24   21   21   25   16   27   19   19   19    18
  23E |   10   23    9   12   14    7   25   21   14   20    5 |    42   45   45   47   45   44   45   40   50   30    43
  24  |    8   18    7   17   14    9   13    9   12   14    4 |    24   25   23   36   31   22   26   29   25   28    24
 X25  |   15   15    6   11   16    4   25    9    9  ---    4 |    18   22   14   20   21   15   31   18   18  ---    15
  26E |   10   15    8    8   19    5   16    8   13   18    4 |    50   54   53   56   58   53   47   54   54   56    51
  27  |    7   16    6   11   10    5   13    7    9   27    4 |    21   27   18   22   23   18   23   22   22   32    20
  28  |    6   22   10    8   19    4   20    7    8   17    4 |    13   31   23   16   30   17   29   16   20   16    17
  29E |    7   25    8    9   14    5   27    9    8   15    4 |    18   28   17   22   20   18   27   21   24   21    18
  30  |    5   14    4    8   10    8   13   11    9    9    3 |     8   21   14   10   18   11   19   15   13   16    12
  31  |    5   21   10    9   18    7   23   10    7   12    4 |    11   26   17   11   33   13   27   12   14   14    14
  32  |    8   12    8    8   12    5   17    8   10   19    3 |    13   15   15   16   16   10   20   16   12   22    11
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |    8   19    8   10   14    6   20   20   12   18      |T   19   28   22   23   27   23   29   25   23   23    21
 WRMS |    7   19    8   10   13    5   19    9    7   18      |NE  16   24   18   19   24   20   26   18   18   20    17
 MEDI |    7   18    7   10   14    5   20    8    9   17      |MD  16   26   20   21   25   17   27   20   20   19    18

Table 3.1622.2   GPS week: 1622   Day: 2   MJD: 55600.000                            

        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
------+--------------------------------------------------------+---------------------------------------------------------
  X1  |    5  ---  ---  ---  ---  234  ---  ---  ---  ---    0 |    28  ---  ---  ---  ---  206  ---  ---  ---  ---    31
   2  |    6   24    8   11   12    4   23    8    8   27    4 |    17   31   19   23   25   22   32   18   19   19    18
   3E |   22   21   14   20   19   13   22   69   33   30   11 |    18   28   23   29   33   26   31   72   40   32    23
   4  |    7   13   12   11   15    5    8    7    6   18    3 |    33   37   38   37   42   36   40   35   36   29    35
   5  |    7   16    9   11   14    3   20    8    8   22    4 |    20   30   25   26   31   21   29   19   19   18    22
   6E |   12   18    9   14   12    6   21   17   12   14    5 |    53   61   56   60   58   58   61   62   59   58    56
   7  |    6   22    6   10   18    5   17    7   11   13    4 |    13   23   17   13   25   16   25   14   17   20    15
   8  |    8   15    6    7   14    5   10    9   10   11    3 |    13   24   15   15   18   14   24   17   17   15    14
   9  |    9   15    8   12   11    4   12    6    8   10    3 |    19   24   19   26   22   16   21   16   18   15    16
  10  |    7   15    9   14   11    4   10    8    6   18    3 |    15   19   24   27   24   22   23   20   21   19    20
  11  |    7   18    5    8   23    5   18    7   12   13    4 |    18   27   25   25   38   23   29   24   27   19    22
  12  |    9   27    9   11   18    7   23    8    9   17    4 |    17   34   17   22   25   22   30   18   24   15    17
  13E |    7   18    6    9   17    6   17    8   10   13    3 |    26   28   22   24   31   23   31   28   26   26    23
  14E |    7   14    8    9   14    3   19    7   12   14    4 |    27   34   30   28   29   27   34   29   31   31    28
  15  |   10   23    8   11   19    5   22    7   12   10    4 |    16   27   20   20   24   16   25   14   16   19    16
  16  |    5   24   13   12   13    5   26   12    9   17    5 |    17   27   19   18   26   18   30   16   18   16    16
  17E |    7   25    6    9   18    5   21    9   12   10    4 |    13   21   17   16   18   12   22   18   17   15    12
  18  |    9   17    7   13    8    4   21    7    8   19    4 |    16   22   18   24   21   18   23   18   20   18    16
  19E |    8   20    9   13   13    5   25   24   11    9    5 |    18   26   22   17   28   19   29   25   20   19    19
  20  |    8   16    8   14   12    6   17    6    5   21    4 |    22   27   23   26   26   22   27   25   23   21    22
  21  |   15   23    7   11   14    7   29    7   12   30    5 |    24   26   23   23   23   22   28   24   29   38    21
  22  |    8   16    7   25    9    4   20   10   10   15    4 |    17   23   23   37   25   19   25   22   22   21    19
  23  |    9   24   12    8   20    5   26    9    7   15    4 |    37   43   41   44   44   40   40   40   38   38    38
  24  |   11   18    6    9   15    4   12    8   12   16    4 |    27   31   35   36   39   33   35   33   33   31    32
 X25  |   18   17    9   17   15    6   26   11    9  ---    5 |    19   20   13   26   22   15   31   20   19  ---    13
  26E |   12   25    9    9   17    4   15   11   10   19    4 |    47   52   48   47   47   49   45   48   49   45    47
  27  |    9   16    8   10   12    4   11    7   10   26    4 |    17   24   19   23   22   16   21   16   19   33    17
  28  |    6   18    6   12   14    5   17    7    9   16    4 |    15   29   17   17   28   18   29   18   19   19    17
  29E |    8   25   13   11   20    6   30   10   11   15    5 |    15   22   16   15   16   15   24   19   22   18    14
  30  |    5   14    7    9   11    6   11    9   10    8    3 |    15   19   18   17   22   16   21   16   15   15    15
  31  |    6   23    8   11   19    5   20    8   12   12    4 |    14   28   21   19   36   17   27   16   19   17    17
  32  |   10   12    8    7   14    7   13    7    8   16    3 |    14   18   17   16   21   20   21   15   18   20    15
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |    9   20    9   12   15    6   19   16   11   17      |T   21   28   23   25   28   28   29   25   24   23    22
 WRMS |    8   20    9   10   14    5   19    8    9   17      |NE  18   25   21   23   26   28   27   19   21   20    19
 MEDI |    8   18    8   11   14    5   20    8   10   15      |MD  17   27   21   24   25   20   29   19   20   19    18

Table 3.1622.3   GPS week: 1622   Day: 3   MJD: 55601.000                            

        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
------+--------------------------------------------------------+---------------------------------------------------------
  X1  |    6  ---  ---  ---  ---  157  ---  ---  ---  ---    0 |    26  ---  ---  ---  ---  138  ---  ---  ---  ---    29
   2  |    8   23    7   15   11    3   24    7    7   26    4 |    17   27   21   23   26   17   28   20   19   19    16
   3E |   22   19   14   13   17   11   21   67   33   32   11 |    26   34   32   29   34   31   36   73   48   35    30
   4  |    8   11    5    7   15    4    9    5    8   15    3 |    28   31   35   33   40   32   32   33   31   26    31
   5  |    8   15    9    9   13    5   19    8   10   20    4 |    19   27   25   23   33   24   28   21   23   19    21
   6E |   12   17    7   12   12    9   19   26   13   12    5 |    43   49   45   40   49   42   52   51   48   46    43
   7  |    7   19    5   11   20    4   14    7    6   14    3 |    13   25   16   14   28   16   22   14   15   15    13
   8  |    8   14    6    9   15    4   10   10   10   10    3 |    14   24   17   15   20   17   24   19   16   16    14
   9  |    9   12    5    9   10    4   12    6   11    8    3 |    26   28   22   20   27   22   25   24   21   25    21
  10  |    7   10    5    7   11    4   10    9    7   18    3 |    19   23   23   22   31   23   22   25   21   21    21
  11  |    7   16    6   11   20    4   19   10   12   15    4 |    19   27   24   28   37   23   27   26   24   24    22
  12  |   11   26    8   10   20    5   22    7    9   16    4 |    20   34   20   19   27   21   32   21   17   16    18
  13E |    7   14    8   11   19    6   20    8   12   17    4 |    34   37   32   35   39   35   41   36   36   39    33
  14E |    9   17    8   10   12    3   21    7   10   14    4 |    38   46   44   42   45   41   49   41   44   42    41
  15  |   10   23    7   13   14    5   20    9   11   12    4 |    23   29   19   20   26   18   25   25   20   22    18
  16  |    7   23    8   12   16    7   25   13    9   17    4 |    20   34   24   23   32   25   34   24   21   23    22
  17E |    6   22    7    8   19    3   23   10    7   15    4 |    17   23   16   19   27   18   24   22   18   15    16
  18  |   10   20    8   15   10    4   22    7   12   19    4 |    22   26   23   27   26   19   26   23   19   21    20
  19E |    8   22    6    9    9    5   24   22   10   11    4 |    15   29   20   21   22   22   26   28   18   20    18
  20  |    8   15    9   16    9    6   18    6    9   21    4 |    25   28   27   33   28   25   27   31   26   27    24
  21  |   11   20    8   10   13    4   26    7   12   29    5 |    27   27   24   23   23   21   28   24   22   36    21
  22  |    8   16    6   10    7    5   20    7   12   17    3 |    25   28   27   30   34   23   27   26   24   25    24
  23  |    6   20    8    8   23    7   27   13   12   19    5 |    19   30   23   20   31   20   29   18   21   18    17
  24  |    7   15    7    8   15    4   14   11   11   17    3 |    29   32   35   38   41   34   32   37   32   37    33
 X25  |   16   15    8   13   18    7   24   10    9  ---    5 |    21   24   18   19   27   18   33   23   17  ---    15
  26E |   11   19    7    9   15    4   15   12   14   24    4 |    57   61   59   63   63   62   63   66   61   68    61
 X27  |   10   13    7    9   12    5  ---    9   10  ---    4 |    22   26   23   20   27   21  ---   24   19  ---    20
  28  |    6   20    6   13   19    4   17    5    8   15    4 |    16   28   19   17   28   18   27   17   15   20    16
  29E |   10   18    8    7   15    3   27    9   10   15    4 |    19   21   16   17   22   18   25   22   21   20    16
  30  |    8   12    8    8   12    5    9    9   12    6    3 |    17   24   18   17   23   19   22   18   18   16    16
  31  |    8   22   14    9   21    6   19    7   12   11    4 |    15   28   20   17   36   17   27   16   17   15    15
  32  |    9   15    5    9   13    4   18    9   10   20    4 |    19   21   19   23   23   19   18   24   22   25    18
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |    9   18    8   11   15    5   19   16   12   18      |T   23   30   25   25   31   28   30   28   24   25    23
 WRMS |    8   18    8   10   13    5   19    8    8   16      |NE  20   27   22   22   29   26   26   23   20   22    20
 MEDI |    8   17    7   10   15    4   19    9   10   16      |MD  20   28   23   23   28   21   27   24   21   22    20

Table 3.1622.4   GPS week: 1622   Day: 4   MJD: 55602.000                            

        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
------+--------------------------------------------------------+---------------------------------------------------------
  X1  |    7  ---  ---  ---  ---   60  ---  ---  ---  ---    0 |    26  ---  ---  ---  ---   49  ---  ---  ---  ---    26
   2  |    8   26    6    8   12    5   27    6   10   26    4 |    18   32   19   18   27   20   29   18   14   18    16
   3E |   18   21   15   13   18   10   20   64   32   27   10 |    20   31   25   28   33   23   29   73   41   28    27
   4  |    8    9    6    7   10    4   17   11    9   18    3 |    40   43   42   39   48   43   47   42   44   36    41
   5  |    8   18    8   10    9    4   18    7    9   20    4 |    21   30   24   25   31   23   28   23   23   19    22
   6E |   11   18    9    9   14    5   20   24   16   10    5 |    30   36   30   33   38   30   40   38   35   31    30
   7  |    6   23    6   13   18    6   17    6    9   13    4 |    17   31   17   17   32   13   26   14   16   15    15
   8  |    8   13    6    9   14    6   10    9    9    9    3 |    17   28   18   19   26   17   25   22   17   16    18
   9  |    8   14    7   10   11    5   12    8    9   10    3 |    15   21   12   14   20   12   19   16   14   13    11
  10  |    7   12    6    9   13    4   11    6    8   16    3 |    21   22   25   22   28   23   24   25   23   22    21
  11  |    9   17    5   11   22    7   22   10   16   18    4 |    20   29   23   24   36   22   26   27   23   24    20
  12  |    7   22    6   11   17    5   25    8   11   15    4 |    20   30   19   16   27   18   29   19   19   14    17
  13E |    6   17    5   14   25    7   18    7    9   12    4 |    33   41   32   33   48   32   39   35   32   40    34
  14E |   13   18    9   10   20    7   20    7    9   17    4 |    30   45   38   39   40   40   44   39   42   38    36
  15  |    8   25   10   11   15    6   23   10    8   12    4 |    16   29   18   13   25   12   22   19   15   19    13
  16  |    6   24    9   11   17    6   26   15   12   17    5 |    16   29   19   23   28   18   32   21   22   20    17
  17E |    7   22    7   12   11    3   29   13   11   11    4 |    23   31   23   20   34   21   29   23   25   19    21
  18  |    9   18    6   15   11    3   20    6   11   19    4 |    21   27   22   28   23   21   25   21   22   20    20
  19E |    7   18    9   10   16    6   28   20   11   11    5 |    18   27   25   20   32   20   26   29   16   23    19
  20  |    6   14    6   15   10    7   18    8   13   21    4 |    26   28   24   30   27   25   25   29   24   23    23
  21  |   13   22   10    9   13    4   26    7   11   29    5 |    22   24   20   20   24   16   24   21   21   35    18
  22  |    7   16    5   11    9    7   21    8   11   15    3 |    25   26   27   26   32   24   27   24   24   22    23
  23  |    7   22    6   16   20    8   29   11    7   14    4 |    21   31   22   27   29   23   31   24   20   22    20
  24  |    8   13    7    9   14    7   14    8   15   10    3 |    30   35   35   34   40   33   31   39   30   33    32
 X25  |   12   14    7   14   17    6   22   13    9  ---    4 |    18   20   18   19   23   15   28   19   18  ---    15
  26E |   15   21   11   11   16    6   17   19    9   27    5 |    62   67   66   67   63   62   62   60   66   65    63
  27  |    9   16    5    8   11    5   12    8    9   24    3 |    15   23   13   14   22   13   21   16   14   27    13
  28  |    7   18    6   12   20    3   16    7    7   19    4 |    21   32   20   22   36   20   29   20   19   21    20
  29E |    9   22   11   11   23    3   26   12   13   13    5 |    15   20   20   23   21   14   22   19   19   20    15
  30  |    8   12    7   10   15    7   14   10   15    5    3 |    18   22   18   19   27   16   22   16   18   14    15
  31  |    5   23    7   10   19    7   22   11   12   15    4 |    14   29   18   18   36   15   25   15   15   15    15
  32  |    7   17    8   15   12    6   16   13    9   21    4 |    16   22   16   25   24   17   17   24   15   22    15
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |    9   19    8   11   16    6   21   16   12   17      |T   22   30   24   25   31   23   29   26   24   24    22
 WRMS |    8   19    8   11   15    6   20    9    9   19      |NE  20   27   21   22   29   21   26   22   20   21    19
 MEDI |    8   18    7   11   15    6   20    9   10   15      |MD  20   29   22   23   29   20   27   23   21   22    20

Table 3.1622.5   GPS week: 1622   Day: 5   MJD: 55603.000                            

        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
------+--------------------------------------------------------+---------------------------------------------------------
  X1  |    8  ---  ---  ---  ---   74  ---  ---  ---  ---    0 |    23  ---  ---  ---  ---   53  ---  ---  ---  ---    23
   2  |   10   23    8   21   12    4   24    6    9   25    5 |    15   32   18   24   25   15   29   15   17   19    15
   3E |   19   18   11   13   17    5   21   49   26   33    8 |    23   33   30   25   39   29   37   62   40   35    30
   4  |   10    8    3   13   11    4    9   11    7   17    3 |    19   28   27   32   29   24   26   24   23   21    24
   5  |   10   11    8    7    9    5   18   10   10   22    4 |    18   27   26   22   29   21   27   20   24   16    21
   6E |   12   15    9   10   15    4   20   22   14   10    5 |    27   35   27   29   40   29   39   38   31   29    29
   7  |    8   18    5    7   17    5   15    8    7   13    3 |    16   25   13   13   27   12   21   11   12   12    11
   8  |   12   13    8   10   15    5   11    9    6   10    3 |    18   24   20   14   22   15   21   18   13   14    15
   9  |    7   13    7    8   12    3   12    9   11   18    3 |    20   25   21   22   23   19   23   19   26   18    20
  10  |    9   12    4   11   11    3    9    7    7   20    3 |    15   23   21   25   26   19   21   21   21   21    19
  11  |    9   18    6   13   20    4   18    9   11   18    4 |    19   29   23   25   33   19   26   24   21   24    20
  12  |   10   20    9   17   16    6   22    7   11   16    4 |    19   29   18   24   27   18   27   18   22   15    18
  13E |   11   13    6   11   14    5   16    5    7   10    3 |    38   38   34   33   37   34   38   37   34   35    33
  14  |   24   18    8    8   23    6   17   12   11   16    5 |    64   73   71   73   79   70   73   70   74   67    69
  15  |    8   28    7   10   14    3   25   10    8   16    4 |    18   33   16   17   27   15   24   19   16   20    15
  16  |    7   27    7   15   16    7   27   12    6   19    5 |    17   32   23   19   28   17   33   18   14   18    18
  17E |    9   18    9   10   15    6   27   22   12   23    5 |    25   29   25   22   28   21   32   28   20   27    22
  18  |    8   18    7   11   11    3   20    5    9   19    4 |    20   26   22   23   25   20   24   21   19   20    20
  19E |   10   19    9    9   17    5   25   23   14   15    5 |    13   26   19   16   28   14   23   28   14   20    15
  20  |    8   16    6   14   10    5   16    9    7   23    4 |    21   27   23   24   27   20   27   23   20   16    20
  21  |   18   22    8   10   11    6   27    7   10   32    5 |    21   25   17   19   21   18   25   23   20   40    17
  22  |    8   15    8   11    8    4   21   11   10   16    4 |    20   26   25   23   28   20   28   22   19   21    21
  23  |    8   25    8   15   18    3   29   14    8   17    5 |    18   28   24   28   30   21   26   24   21   25    19
  24  |    7   15    7    9   15    3   12   13   11   13    3 |    21   22   24   26   29   22   24   24   23   22    22
 X25  |   18   14    8   13   15    5   22   12   11  ---    5 |    18   21   16   16   26   14   30   19   18  ---    14
  26E |   20   26   11   16   31    9   14   40   12   37    8 |    74   74   72   67   87   69   70   87   68   78    71
  27  |    9   14    7    8    9    3   10    9   11   24    3 |    18   28   21   22   24   19   21   19   24   28    20
  28  |   10   20    6   10   21    5   14    7    6   19    4 |    19   29   20   15   34   18   27   15   16   21    17
  29E |   10   22    9    8   16    3   29   18    9   14    5 |    25   28   27   24   30   22   30   25   27   27    24
  30  |    7   14    6   11   11    7   13   11    9   10    3 |    15   18   19   18   24   12   21   11   15   11    15
  31  |    6   21    8   12   19    7   18   13    9   15    4 |    15   26   16   16   35   13   23   15   17   14    15
  32  |    8   16    5    9   13    6   16   12    7   22    4 |    21   23   21   18   27   19   22   23   16   24    18
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |   11   19    8   12   16    5   19   16   11   20      |T   22   30   25   24   32   23   29   26   24   25    22
 WRMS |   10   19    7   11   14    5   18   10    7   19      |NE  18   26   20   20   27   19   25   19   18   19    18
 MEDI |    9   18    8   11   15    5   18   11    9   17      |MD  19   28   22   23   28   19   26   22   20   21    20

Table 3.1622.6   GPS week: 1622   Day: 6   MJD: 55604.000                            

        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
------+--------------------------------------------------------+---------------------------------------------------------
  X1  |    7  ---  ---  ---  ---  153  ---  ---  ---  ---    0 |    28  ---  ---  ---  ---  109  ---  ---  ---  ---    30
   2  |    9   21   10   10   11    5   24    8    7   25    4 |    15   28   18   17   25   16   28   15   16   20    15
   3E |   19   19   12   12   19    5   19   47   27   37    8 |    19   27   25   21   33   23   32   56   40   38    24
   4  |    9   11    5   11   11    7    8   13    8   16    3 |    32   33   39   41   46   39   37   40   39   35    38
   5  |   12   13    6   11   12    5   17    9   10   25    4 |    23   33   30   31   38   30   33   28   33   29    29
   6E |   13   19    9   10   16    3   18   20   17   18    5 |    36   48   39   42   48   40   46   47   46   42    42
   7  |   20   18    6   13   18    6   18    9   11   16    5 |    18   23   15   16   25   15   22   15   18   17    14
   8  |   12   16    6   10   13    4   12   10    9   11    3 |    15   24   17   12   19   14   23   17   17   17    15
   9  |   10   16    5   11   10    5   13   11    9   19    3 |    19   26   19   23   24   18   27   20   24   25    21
  10  |   10   11    7   13   12    5    9    7    7   22    3 |    20   25   27   33   36   28   24   30   32   27    26
  11  |    7   16    5   16   19    4   19   14    7   26    4 |    20   28   24   30   37   24   26   30   25   32    23
  12  |   10   23    8   11   14    4   22    7   10   17    4 |    21   33   21   23   27   21   32   20   22   19    20
  13E |   19   14    6   15   15    6   16   12   13   10    4 |    55   66   61   61   60   62   68   58   68   65    62
  14  |    7   17    6   10   19    5   22   11    8   16    4 |    38   38   38   36   40   36   39   36   37   38    35
  15  |    9   24    9   12   15    4   25   10   10   15    4 |    17   32   23   19   28   16   31   17   26   22    22
  16  |    9   26   10   17   14    6   26   14   11   19    5 |    17   31   24   21   26   20   34   20   23   21    21
  17E |   12   19    6   12   16    4   24   12    9   15    4 |    32   40   35   35   38   35   41   41   40   41    38
  18  |   10   19    9   21   11    4   21    8   11   18    4 |    25   29   25   31   29   23   28   25   24   24    23
  19E |    8   22    7   11   12    4   26   19   14   16    5 |    10   25   17   17   21   14   23   23   19   21    15
  20  |    8   13    8   15    9    8   17   13    9   25    4 |    25   29   31   34   31   26   28   31   27   25    26
  21  |   17   21   10   11   15    7   27    8    9   34    5 |    26   26   26   25   26   23   27   28   27   46    24
  22  |    9   15    7   11    9    4   18    8    9   17    3 |    27   30   32   30   34   28   29   28   28   29    28
  23  |    7   25    6   14   19    5   28   15   13   15    5 |    20   31   23   26   29   22   29   26   24   26    21
  24  |    7   17    4   11   11    5   15   11    7   13    3 |    27   31   34   37   40   32   31   38   30   32    32
 X25  |   15   14    6   13   16    6   24   11   11  ---    5 |    18   20   15   18   23   15   31   18   19  ---    14
  26  |   17   19    8   14   17    5   13   14   13   27    5 |    83   93   88   93   87   88   88   90   94   91    91
  27  |   11   17    6   12   10    5   12   12   10   26    4 |    16   26   19   21   27   19   23   18   24   31    20
  28  |    8   27    6   12   19    3   18    9    8   20    4 |    20   36   21   19   28   22   30   21   26   30    21
  29E |   12   26    9   11   13    5   31    8    7   12    5 |    22   27   26   20   21   21   24   25   28   23    24
  30  |    8   16    5   12   15    7   12   12   11   10    3 |    17   22   21   24   25   18   22   19   23   18    19
  31  |    5   21    9   16   18    6   18   10    6   13    4 |    13   26   18   19   32   15   24   13   17   16    15
  32  |   10   14    7   12   12    6   16   15   10   22    4 |    15   21   20   20   24   17   20   17   17   24    17
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |   11   19    7   13   14    5   20   14   11   20      |T   24   32   28   28   33   29   32   29   30   30    27
 WRMS |   10   19    7   12   14    5   18   10    8   18      |NE  20   27   23   24   29   25   27   23   24   25    22
 MEDI |   10   18    7   12   14    5   18   11   10   17      |MD  20   29   24   24   29   22   29   25   26   26    23



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 4.1622   GPS week: 1622   MJD: 55598.0-55604.0

CENT| CLK EPO  |        BRUS       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3024 |U    8     7    23 |U   17    15    53 |U   19     7    31 |
emr | emr 2965 |U   10    10    23 |U   22    19    62 |    20     8    31 |
esa | esa 2976 |     7     7    22 |U   17    15    51 |    17     6    28 |
gfz | gfz 2963 |U   16    10    32 |U   21    20    60 |U   21     7    29 |
grg | grg 2975 |     8     8    21 |U   18    14    52 |    19     6    29 |
igr | igr 2952 |     8     8    22 |    18    18    58 |    18     7    28 |
igs | igs 2943 |     7     6    19 |    17    15    52 |    18     6    27 |
jpl | jpl 2934 |     9     9    24 |U   20    20    58 |    19     7    30 |
mit | mit 2976 |U    9     7    25 |U   23    27    81 |U   20     6    33 |



Table 5: Daily Precise Navigation Summary using the corresponding Centre orbit 
         positions and satellite clock corrections at 15 min intervals.

         Each line gives the daily station RMS w.r.t. the estimated coordinates 
         for the Latitude, Longitude and Height components.
        
         CLK  - Satellite clocks used.
         EPO  - Number of satellite clock epochs available for that day.
         Units: mm.

Table 5.1622.0   GPS week: 1622   Day: 0   MJD: 55598.0

CENT| CLK EPO  |        BRUS       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3027 |     7     6    22 |     9     8    33 |    92     8   109 |
emr | emr 2964 |     9     8    17 |    16    13    48 |    91     6   102 |
esa | esa 2976 |     6     6    19 |    12    10    33 |    83     7    97 |
gfz | gfz 2964 |     8     6    19 |    17    17    42 |    88     5   106 |
grg | grg 2976 |     7     6    20 |    11     9    36 |    93     6   108 |
igr | igr 2962 |     6     5    19 |    11     9    30 |    86     6    99 |
igs | igs 2944 |     6     5    17 |    10     9    32 |    90     6   104 |
jpl | jpl 2867 |     8     6    19 |    10    11    35 |    85     9    95 |
mit | mit 2976 |     9     6    25 |    19    11    50 |    99     8   123 |

Table 5.1622.1   GPS week: 1622   Day: 1   MJD: 55599.0

CENT| CLK EPO  |        BRUS       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3021 |     7     8    18 |    26    16    68 |     5     5    22 |
emr | emr 2964 |    10    11    21 |    30    18    84 |     8    10    20 |
esa | esa 2976 |     6     8    16 |    26    16    61 |     6     5    15 |
gfz | gfz 2965 |    16    14    40 |    22    19    55 |    12     7    20 |
grg | grg 2976 |     7     9    16 |    27    15    75 |     6     6    20 |
igr | igr 2942 |     7    10    17 |    26    16    66 |     5     4    16 |
igs | igs 2906 |     7     9    13 |    26    16    70 |     5     6    14 |
jpl | jpl 2963 |     9    12    17 |    29    20    70 |     7     9    21 |
mit | mit 2976 |     8    10    20 |    31    72   175 |     6     6    14 |

Table 5.1622.2   GPS week: 1622   Day: 2   MJD: 55600.0

CENT| CLK EPO  |        BRUS       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3032 |     7     6    21 |    17    19    51 |     5     7    16 |
emr | emr 2964 |    12     9    24 |    31    21    50 |     6     6    18 |
esa | esa 2976 |    11    15    31 |    18    20    51 |     5     4    20 |
gfz | gfz 2959 |    17     9    33 |    22    31    63 |     7     5    17 |
grg | grg 2976 |     7     7    22 |    17    17    51 |     6     4    20 |
igr | igr 2943 |     7     6    25 |    22    22    58 |     6     4    14 |
igs | igs 2965 |     7     5    21 |    18    19    53 |     6     5    14 |
jpl | jpl 2958 |    10     9    23 |    28    20    49 |     7     6    19 |
mit | mit 2976 |     7     7    22 |    34    20    52 |     9     8    21 |

Table 5.1622.3   GPS week: 1622   Day: 3   MJD: 55601.0

CENT| CLK EPO  |        BRUS       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3024 |    10    14    29 |    18    19    75 |    10     9    18 |
emr | emr 2964 |     8     8    22 |    22    17    61 |     8     8    15 |
esa | esa 2976 |     6     4    15 |    15    20    70 |     6     6    14 |
gfz | gfz 2964 |    12     6    23 |    23    21    84 |    11    10    16 |
grg | grg 2976 |     8     8    22 |    18    20    64 |     7     7    16 |
igr | igr 2922 |     9    13    23 |    19    21    77 |    11    13    25 |
igs | igs 2967 |     6     5    17 |    17    19    70 |     8     8    14 |
jpl | jpl 2868 |     7     8    20 |    21    17    72 |     7     7    15 |
mit | mit 2976 |     8     8    26 |    18    19    80 |     7     6    17 |

Table 5.1622.4   GPS week: 1622   Day: 4   MJD: 55602.0

CENT| CLK EPO  |        BRUS       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3026 |     8     7    22 |    22    16    44 |     7     6    19 |
emr | emr 2966 |    11    11    29 |    29    35    78 |     7     7    19 |
esa | esa 2976 |     8     6    24 |    20    14    37 |     6     4    18 |
gfz | gfz 2964 |    19    11    34 |    22    21    56 |    10     7    16 |
grg | grg 2976 |     9     6    25 |    24    14    49 |     6     4    13 |
igr | igr 2958 |     8     7    24 |    24    32    73 |     5     5    15 |
igs | igs 2918 |     8     5    22 |    22    15    45 |     5     5    15 |
jpl | jpl 2964 |     9     8    28 |    22    38    80 |     8     7    20 |
mit | mit 2976 |     8     5    25 |    25    33    89 |     6     5    17 |

Table 5.1622.5   GPS week: 1622   Day: 5   MJD: 55603.0

CENT| CLK EPO  |        BRUS       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3022 |     6     5    21 |    12    12    41 |     6     5    15 |
emr | emr 2968 |     8    11    25 |    13    12    45 |     8     7    20 |
esa | esa 2976 |     6     5    22 |    13    11    49 |     6     5    17 |
gfz | gfz 2965 |    19     9    37 |    23    20    61 |    10     6    15 |
grg | grg 2976 |     6     8    22 |    13    11    38 |     7     6    18 |
igr | igr 2967 |     7     6    22 |    13    11    45 |     7     8    15 |
igs | igs 2974 |     7     6    21 |    13    11    39 |     6     6    14 |
jpl | jpl 2965 |     8     8    24 |    13    14    43 |     9     7    22 |
mit | mit 2976 |    12     5    27 |    15    12    55 |     7     6    20 |

Table 5.1622.6   GPS week: 1622   Day: 6   MJD: 55604.0

CENT| CLK EPO  |        BRUS       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3020 |     8     6    31 |    16    18    62 |     7     7    17 |
emr | emr 2968 |    11    11    24 |    16    19    69 |     9     8    20 |
esa | esa 2976 |     7     7    25 |    16    16    58 |     7     8    13 |
gfz | gfz 2965 |    24    15    36 |    18    14    60 |     7     6    13 |
grg | grg 2975 |    13    12    24 |    16    14    54 |     7     7    12 |
igr | igr 2974 |     9     8    25 |    15    16    58 |     7     8    14 |
igs | igs 2928 |     7     9    22 |    15    17    54 |     6     7    12 |
jpl | jpl 2958 |    16    16    35 |    16    22    56 |     9     7    20 |
mit | mit 2976 |    14    11    30 |    17    22    68 |     9     7    18 |


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 6.1622   GPS week: 1622   MJD: 55598.500-55604.500

                                                         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     -32      73      53      0 |       5     15
            |      21       8      82      62      3 |       1
emr   uuuuu |      -1       1      50     -82    -15 |      24     30
            |      19      15      96      32      4 |       7
esa   uuuuu |      -7     -25      27     -14      3 |      -5     16
            |      14      22      55      41      3 |       1
gfz   uuuuu |     -21      33      21      33      2 |       6     17
            |      13      25      52      74      3 |       1
grg   uuuux |      14     -59      49     -44      5 |       0     16
            |      47      28      59     123     11 |       2
igr   xxxxx |     -17      31      40     -23     -6 |      -1     20
            |      19      20      97      76     12 |       6
irf   xxxxx |      13       0     -56      52      1 |      -4     15
            |      17      10      50      46      5 |       1
jpl   uuuuu |      26     -17      68     121    -16 |      -2     29
            |      78      64     124      78      9 |       7
mit   uuuuu |     -23      -8     -92     115      3 |      10     18
            |      22      10      62      48      9 |       2
ngs   uuuuu |      26      39    -103     -91     -2 |      -3     12
            |      45      36     111      99      8 |       3
sio   uuuuu |      12      46      85     -22      6 |       9     17
            |      27      19      56      86      5 |       3


Table 7.1622.0   GPS week: 1622   Day: 0   MJD: 55598.500

                                                         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 |       2     -38     -44      64      0 |       8     19
emr   uuuuu |     -24      -2     149    -110    -11 |      34     39
esa   uuuuu |      -2       3      60     -11      0 |      -2     18
gfz   uuuuu |     -37      55     -16       6      5 |       8     20
grg   uuuux |     -76     -73      95    -281      6 |      -3     17
igr   xxxxx |     -13      10      -7      50    -20 |      10     26
irf   xxxxx |      15      10     -67     105      3 |      -3     19
jpl   uuuuu |     186     -80      59     120    -16 |       7     29
mit   uuuuu |     -12      -2     -94     185      8 |      10     22
ngs   uuuuu |       6      -6    -155     -62     -1 |       1     12
sio   uuuuu |      12      60      79     119      0 |      13     27

Table 7.1622.1   GPS week: 1622   Day: 1   MJD: 55599.500

                                                         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     -15      45      26     -4 |       6     17
emr   uuuuu |      20       6      88     -43    -16 |      30     36
esa   uuuuu |      -8      -7     -27     -27      5 |      -5     16
gfz   uuuuu |     -36      -8      -5     -21      1 |       6     18
grg   uuuux |      30     -90      66      38      4 |      -2     18
igr   xxxxx |      15      13     -29     -22    -23 |       4     21
irf   xxxxx |       4       9     -53      70      6 |      -6     16
jpl   uuuuu |       8     114     253     159    -20 |       4     28
mit   uuuuu |     -36       3     -77     133     12 |       7     17
ngs   uuuuu |      52      -4    -115    -170     -7 |       0     11
sio   uuuuu |      -2      53     111      43     10 |       8     18

Table 7.1622.2   GPS week: 1622   Day: 2   MJD: 55600.500

                                                         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 |      21     -35      65     -61      0 |       4     15
emr   uuuuu |      19     -31     125     -96    -15 |      26     31
esa   uuuuu |     -20     -38     -32      67     -2 |      -6     15
gfz   uuuuu |      -9      28      92     -74      1 |       4     17
grg   uuuux |      46     -53      25     -51      9 |      -1     17
igr   xxxxx |     -11      39     -24      66    -11 |      -1     18
irf   xxxxx |      -4      -7     -14     -33      5 |      -7     16
jpl   uuuuu |     -36     -25     112      82    -14 |       0     28
mit   uuuuu |     -37     -11     -62      32     10 |       7     17
ngs   uuuuu |      67      75    -184      34     -7 |      -1     11
sio   uuuuu |     -23      28     165    -107     12 |       6     14

Table 7.1622.3   GPS week: 1622   Day: 3   MJD: 55601.500

                                                         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 |      41     -29     193      29      3 |       5     14
emr   uuuuu |     -20       0      10     -90     -9 |      24     31
esa   uuuuu |     -27     -12      57     -21      2 |      -6     15
gfz   uuuuu |     -24      40      46       9      3 |       5     16
grg   uuuux |      71     -69     -15      78    -17 |      -1     17
igr   xxxxx |     -29      61     -77     -38     -4 |      -4     20
irf   xxxxx |       1      -7      -4      18      4 |      -5     13
jpl   uuuuu |      -9     -71     -80     131    -14 |      -1     29
mit   uuuuu |     -44     -18       3     114      7 |      10     16
ngs   uuuuu |      94      65    -171    -122    -14 |      -3     13
sio   uuuuu |      -3      24     130     -64     11 |       7     14

Table 7.1622.4   GPS week: 1622   Day: 4   MJD: 55602.500

                                                         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 |      34     -38     171      80      5 |       5     14
emr   uuuuu |      -4       3     -94    -100    -21 |      22     27
esa   uuuuu |       8     -26     101     -12      3 |      -6     15
gfz   uuuuu |     -10       9      77      66      6 |       5     16
grg   uuuux |      -5     -46      81     -95      9 |       1     16
igr   xxxxx |     -45      51     106    -163      5 |      -5     19
irf   xxxxx |      33     -16     -26      83      0 |      -4     14
jpl   uuuuu |     -45     -21    -100      30    -30 |      -4     27
mit   uuuuu |       2     -24     -80     124     -1 |      11     18
ngs   uuuuu |       2      80    -154     -80      2 |      -5     12
sio   uuuuu |      35      26      77      12      7 |       8     16

Table 7.1622.5   GPS week: 1622   Day: 5   MJD: 55603.500

                                                         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 |      24     -29      49     119     -2 |       4     14
emr   uuuuu |     -12      17     -54    -105    -17 |      18     25
esa   uuuuu |      -9     -35      59     -69      8 |      -6     16
gfz   uuuuu |      -5      54       4     111     -2 |       6     16
grg   uuuux |       0     -77     123     -59      5 |       3     15
igr   xxxxx |     -24      26     157       1      3 |      -6     19
irf   xxxxx |      40       6     -75      62     -3 |      -4     13
jpl   uuuuu |      28     -35      86      61    -21 |      -9     29
mit   uuuuu |       9      -4    -138     133     -6 |      12     18
ngs   uuuuu |     -18      37     -72      11      4 |      -6     13
sio   uuuuu |      59      60      24    -119      5 |      10     16

Table 7.1622.6   GPS week: 1622   Day: 6   MJD: 55604.500

                                                         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 |      71     -38      32     112     -2 |       4     14
emr   uuuuu |      15      13     123     -28    -18 |      15     24
esa   uuuuu |      12     -62     -27     -26      4 |      -5     14
gfz   uuuuu |     -24      56     -51     134      2 |       6     16
grg   uuuux |      33      -4     -35      62     19 |       3     15
igr   xxxxx |     -10      16     154     -52      8 |      -7     19
irf   xxxxx |       4       6    -151      56     -9 |      -3     12
jpl   uuuuu |      49       2     145     267      0 |     -13     32
mit   uuuuu |     -43      -1    -196      82    -12 |      13     18
ngs   uuuuu |     -21      28     133    -248      8 |      -6     13
sio   uuuuu |       4      69       6     -40     -2 |      11     16



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