[IGSREPORT-19611] Wk 1627 IGS Final Orbits

Jim Ray igs.acc at noaa.gov
Thu Mar 31 05:00:08 PDT 2011


Author:  AC Coordinator / NOAA NGS

sum-file Version 2.0
Final IGS Orbit Combination - Week 1627   (Mar 13, 2011 - Mar 19, 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:

igs1627[0-6].sp3  IGS GPS ephemeris files in SP3 format.
igs1627[0-6].clk  IGS GPS satellite and station clocks in clock RINEX format.
igs1627[0-6].cls  IGS GPS clock combination summary report.
igs16277.erp      Earth Rotation Parameters (ERP) and their rates as well as
                  Universal Time (UT1-UTC) and Length Of Day (LOD) associated 
                  with IGS ephemerides.
igs16277.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   | USNO IISC NRC1 USNO
                0  |  EMR   | 9 9 WTZR WTZR
                0  |  ESA   | ALIC
                0  |  GFZ   | 9 11 20 FAA1 HARB MDVJ OUS2 RAMO
                0  |  GRG   | ADIS ALIC
                0  |  JPL   | 25 27 FAA1
                0  |  MIT   | HRAO HARB HRAO
                1  |  COD   | MDVJ PIE1
                1  |  EMR   | MATE WTZR WTZR
                1  |  ESA   | MDVJ
                1  |  GFZ   | 6 11 30 ALIC ALRT STJO
                1  |  GRG   | ZECK
                1  |  JPL   | 25
                1  |  MIT   | 23 23 ALRT DAV1 ALRT DAV1 KOUC MAW1 MDVJ SFER
                2  |  EMR   | WTZR WTZR
                2  |  ESA   | 27 27 MATE UNSA
                2  |  GFZ   | 11 DAV1 MDVJ WES2
                2  |  GRG   | AMC2 MATE ZECK
                2  |  JPL   | 25
                2  |  MIT   | 9 9 MDVJ
                3  |  COD   | 4
                3  |  EMR   | 4 4 WTZR WTZR
                3  |  ESA   | UNSA
                3  |  GFZ   | 4 11 MATE MDVJ
                3  |  GRG   | AMC2 QAQ1
                3  |  JPL   | 4 9
                3  |  MIT   | 25 25 BAKO
                4  |  EMR   | WTZR WTZR
                4  |  ESA   | UNSA
                4  |  GFZ   | 11 24 ALIC COCO MDVJ SALU
                4  |  GRG   | AMC2 SANT
                4  |  MIT   | 19 27 19 27 HARB MAW1 HARB MAW1
                5  |  ALL   | 1 1
                5  |  COD   | WROC RAMO WROC
                5  |  EMR   | 4 4 WTZR WTZR
                5  |  ESA   | UNSA
                5  |  GFZ   | 11 BRMU HARB MDVJ
                5  |  GRG   | ADIS AMC2 SANT
                5  |  JPL   | 4 25 IISC
                5  |  MIT   | 4 9 27 4 9 27 BRMU OUS2
                6  |  COD   | 26 26 RAMO
                6  |  EMR   | 4 4 WTZR WTZR
                6  |  ESA   | ALIC
                6  |  GFZ   | MDVJ SCUB
                6  |  GRG   | AMC2
                6  |  JPL   | 4 21 25
                6  |  MIT   | 4 9 11 4 9 11 CAS1

 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
               ----+--------+---------------
                3  |  COD   |  25

 6. Velocity changes were estimated to alleviate the effects of modeling
    problems, experienced by all centres,in the Long Arc (LA) process.
    
             Velocity changes per day and affected satellites:
    
               Day |  0 |  1 |  2 |  3 |  4 |  5 |  6 |
           --------+----+----+----+----+----+----+----+
           PRN G25 |  4 |  4 |  4 |  4 |  4 |  4 |  4 |

 7. 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.

 8. 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  |    -.7     .8     .8     -13     10    -18     .20
       EMR  |   -2.6    5.0    8.0      27     -9     39     .41
       ESA  |    3.0    6.4   -8.9     125    -56     21     .18
       GFZ  |   -4.7   -5.3     .1      49    -25    356     .48
       GRG  |   -2.4    3.8    4.8      41     32    -78     .41
       JPL  |    1.1    4.8    5.8      52    -38     52     .14
       MIT  |    5.0   -3.4   -3.7      -3    -25    -35     .34
       NGS  |    -.4   -2.5   -1.3     -33     -2     18     .28
       SIO  |    2.8    6.3     .4     124    -81     17     .58


 9. 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.

10. 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.

11. 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 1.1627.a). It also displays the computed satellite
position sigmas for the combined orbits (table 1.1627.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 2.1627.[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 3.1627.[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 5.1627.0-6).

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 1627 summary.                       (Mar 13, 2011 - Mar 19, 2011)

Table 1.1627.a   GPS week: 1627   MJD: 55633.000-55639.000

         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  240|    0     0     3    74   -45     2  -.21   10    9 |    -284    -570     17     72
        |    0     0     1    15    18    17   .03           |     362     588
emr   94|    0     1     4    12    16    27   .44   21   21 |   -1439    -374     18     90
        |    0     3     1    30    39    19   .03           |     738    1191
esa  137|    1     1    -1  -137   -33     2   .23    9    9 |    -357     408     14    131
        |    0     1     1    20    20    14   .02           |    1016    1453
gfz  196|    0    -3    -2   -36    34     0  -.20   11   12 |     307    -265     24     99
        |    1     1     1    60    31    11   .02           |     255     442
grg  131|    0     1     0   -25   -71   -16   .63   16   15 |      27     -45     47    211
        |    1     0     1    42    22     9   .03           |     227     366
igr  n/a|    0     0     0    63   -19   -10  -.04    5    5 |   -1965    -851     18     62
        |    0     0     1    11    25    33   .02           |    1469    1129
jpl  137|    1     1     4   -55    78    48   .51   22   22 |    2192    -461     20     92
        |    1     0     1    23    10    49   .03           |     865    1200
mit  258|    1    -1    -6    92    46    -1  -.33   13   12 |    -252     350     23    153
        |    1     1     0    35    16     7   .03           |     135     225
ngs  213|   -1     0    -1   138   -46   -28  -.21   10    8 |    -294    -576   2258   3998
        |    1     0     0    29    25    10   .03           |     350     590
sio  257|    1     2     8  -182   160    15  -.12   20   20 |     ---     ---    ---    ---
        |    1     0     1    32    15    12   .02           |     ---     ---


Table 1.1627.b   GPS week : 1627   MJD: 55633.000-55639.000   

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



Table 2: Daily transformation of each centre to the combined IGS orbit and
         clocks for each day of the week. The transformation displayed is the
         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 2.1627.0   GPS week: 1627   Day: 0   MJD: 55633.000                            

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  240|    0     0     4    84   -22    -3  -.18    9    9 |    -812     298     16     67
        |                     37     8                       |
emr   94|    0    -4     3    34     1    24   .42   21   21 |    -119   -2289     17     80
        |                    -58    40                       |
esa  137|    0     2    -4  -142   -28     2   .26   10    9 |    1333    1150     12    112
        |                     14    70                       |
gfz  196|    1    -2    -3  -131    10     3  -.18   12   11 |      69     241     24     99
        |                    -60   -30                       |
grg  131|    1     1     0    30   -62   -23   .65   15   14 |     321    -485     38    200
        |                    -32   -46                       |
igr  n/a|    0     0    -2    64    13   -23  -.03    5    5 |     453   -2637     18     54
        |                    -29    41                       |
jpl  137|    2     1     4   -48    81    13   .50   22   22 |    3621   -2373     21     90
        |                      3    17                       |
mit  258|    0     0    -5    54    14     0  -.38   13   12 |     -65     336     22    153
        |                     13     8                       |
ngs  213|   -1    -1    -1   159   -13   -19  -.22    9    7 |    -831     304   2653   4331
        |                     -2    -2                       |
sio  257|    0     2     9  -208   138    33  -.11   21   17 |     ---     ---    ---    ---
        |                     63   -16                       |

Table 2.1627.1   GPS week: 1627   Day: 1   MJD: 55634.000                            

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  240|    0     0     4   104   -36     8  -.20   10   10 |      30    -789     16     78
        |                      5    35                       |
emr   94|    0     1     6    52    -5    13   .40   21   21 |   -1878    1552     17     80
        |                    -58    33                       |
esa  137|    1     1    -2  -100   -51   -12   .23    8    8 |   -1005    -379     13    123
        |                     19   115                       |
gfz  196|    1    -3    -1  -102    64     0  -.22    9   10 |     580    -901     22     92
        |                    -68     6                       |
grg  131|    0     1    -1    14   -58   -24   .66   14   14 |      24      87     48    204
        |                     -4   -19                       |
igr  n/a|    0    -1     0    83   -22   -64  -.05    5    5 |   -1642    1084     16     57
        |                    -61    78                       |
jpl  137|    2     1     5   -28    83   133   .50   21   21 |    1783    1594     19     93
        |                     27   -27                       |
mit  258|    0     0    -5    43    64    -7  -.35   11   10 |    -336     410     22    160
        |                     13    -2                       |
ngs  213|   -1     0    -1   165   -72   -44  -.24    9    8 |       7    -783   2254   3792
        |                     72    52                       |
sio  257|    0     2     9  -213   175    27  -.12   20   19 |     ---     ---    ---    ---
        |                     61   -23                       |

Table 2.1627.2   GPS week: 1627   Day: 2   MJD: 55635.000                            

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  240|    0     0     4    56   -25    -6  -.18    9    9 |     134   -1488     15     63
        |                    131    15                       |
emr   94|    1    -2     0   -29   -20    68   .47   21   21 |    -795    -969     18     97
        |                    -14    51                       |
esa  137|    2     1     0  -153   -32   -11   .23    9    9 |   -1439     694     13    129
        |                     37   106                       |
gfz  196|    0    -2    -4    16    59    17  -.18    9   10 |     358    -425     24     98
        |                     -3    12                       |
grg  131|   -1     1    -2   -83   -89     0   .63   17   16 |      33    -372     45    190
        |                    127    -8                       |
igr  n/a|    0     0     0    48   -14   -39  -.01    5    5 |    -901   -1477     16     59
        |                      3    35                       |
jpl  137|    1     1     5   -95    63   -25   .52   22   22 |    3021   -1164     23     89
        |                    -31   -37                       |
mit  258|    0    -1    -7   141    42    10  -.33   13   12 |    -310     183     20    151
        |                      1    -6                       |
ngs  213|   -1     0    -2   117   -69   -16  -.18   10    8 |     110   -1477   2334   3812
        |                     23    54                       |
sio  257|    0     2     7  -127   154    13  -.08   18   20 |     ---     ---    ---    ---
        |                     62   -23                       |

Table 2.1627.3   GPS week: 1627   Day: 3   MJD: 55636.000                            

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  240|    0     0     4    66   -40    12  -.20   10    9 |    -734      28     18     74
        |                     35    28                       |
emr   94|    2     0     3    37   -20    13   .46   21   21 |   -1409    -769     20     95
        |                    -45    46                       |
esa  137|    1     1     0  -129   -64    -4   .21    8    9 |     362   -1862     13    110
        |                     58   120                       |
gfz  196|    0    -5    -2   -53    63   -20  -.22   12   14 |     -82     205     26     98
        |                      3     7                       |
grg  131|   -2     0    -2   -23   -30    -9   .61   17   17 |    -419     340     44    276
        |                     56   -72                       |
igr  n/a|    0     0     0    57    -2    -5  -.05    5    5 |   -1922   -1017     18     60
        |                    -10    78                       |
jpl  137|    1     2     3   -34    71    50   .54   21   21 |    2261    -486     19     94
        |                     -7    19                       |
mit  258|    0     0    -6    73    52     6  -.31   11   10 |    -471     417     23    134
        |                     -3    -6                       |
ngs  213|    0    -1    -3   168   -51   -32  -.18   10    9 |    -688      18   2246   4098
        |                     32    22                       |
sio  257|    0     3     7  -200   158     9  -.13   19   19 |     ---     ---    ---    ---
        |                     64    -9                       |

Table 2.1627.4   GPS week: 1627   Day: 4   MJD: 55637.000                            

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  240|    0     0     1    71   -58   -28  -.22    9    9 |    -268    -516     16     70
        |                     95    52                       |
emr   94|    0     4     4    -5    27    27   .42   22   22 |   -2081    -466     19     91
        |                      4    15                       |
esa  137|    2     2     0  -166   -39    17   .23   10    9 |    -289    -717     16    132
        |                     21    86                       |
gfz  196|    0    -3    -1   -17    50     0  -.20   11   11 |     512    -472     23     98
        |                    -27    35                       |
grg  131|    0     2     0   -67   -83   -19   .60   16   16 |      30      40     49    215
        |                     85    39                       |
igr  n/a|    0     0     0    72   -62    24  -.01    5    5 |   -2748    -823     17     70
        |                    -28    86                       |
jpl  137|    0     0     4   -45    92    75   .45   23   23 |    1830    -310     21     97
        |                      5   -92                       |
mit  258|    1    -3    -6   111    46     1  -.31   15   13 |    -189     298     23    159
        |                      5   -11                       |
ngs  213|   -2    -1    -2   152   -66   -36  -.19   10    8 |    -321    -497   2020   3969
        |                     32    52                       |
sio  257|    2     3     8  -152   177    22  -.12   19   20 |     ---     ---    ---    ---
        |                     56     1                       |

Table 2.1627.5   GPS week: 1627   Day: 5   MJD: 55638.000                            

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  240|   -1     1     1    66   -57     2  -.23   10    9 |    -227    -762     21     71
        |                     60    50                       |
emr   94|    0     4     5    13    86    24   .41   23   23 |   -1687     325     19     85
        |                      2   -52                       |
esa  137|    0     0     0  -131    -9    27   .20   10    8 |   -1422    1939     19    140
        |                     13    91                       |
gfz  196|    0    -2    -4     9    -7     1  -.23   13   13 |     187      83     25     94
        |                    -23    31                       |
grg  131|    1     0     0   -43   -83   -23   .67   15   13 |      18     435     47    196
        |                     80    -4                       |
igr  n/a|    0     0    -1    58   -44    10  -.07    6    5 |   -2978    -311     20     58
        |                    -67    50                       |
jpl  137|    1     0     6   -57    86    59   .53   23   23 |    1776      35     22     86
        |                     38     9                       |
mit  258|    3    -2    -6   100    43   -12  -.33   14   13 |    -257     765     23    131
        |                      8    -6                       |
ngs  213|   -4     0     0   114   -27   -31  -.24   10    8 |    -223    -786   2080   4048
        |                     28   -47                       |
sio  257|    3     3     6  -197   146     9  -.14   20   21 |     ---     ---    ---    ---
        |                     58    10                       |

Table 2.1627.6   GPS week: 1627   Day: 6   MJD: 55639.000                            

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  240|    0     0     1    71   -74    29  -.27   11    9 |    -116    -762     20     82
        |                     59    45                       |
emr   94|    1     2     6   -16    48    17   .46   23   23 |   -2108      -7     21    104
        |                     25   -31                       |
esa  137|    0     2    -1  -139   -12     0   .23    9    8 |     -43    2037     17    172
        |                     67    71                       |
gfz  196|   -2    -3    -1    20     2    -8  -.19   14   13 |     528    -587     28    114
        |                     26    12                       |
grg  131|    1     0    -2    -5   -92   -19   .61   17   13 |     186    -366     61    197
        |                     63    21                       |
igr  n/a|   -1     0     0    59    -5    23  -.05    6    6 |   -4021    -781     21     79
        |                      2    47                       |
jpl  137|    0     0     6   -75    67    30   .48   23   23 |    1058    -525     20     95
        |                     52   -11                       |
mit  258|    4    -2    -6   119    62    -5  -.28   13   12 |    -138      43     30    188
        |                     -7    -1                       |
ngs  213|   -2    -1     0    92   -19   -17  -.22   10    9 |    -115    -815   2224   3938
        |                     41     8                       |
sio  257|    2     2     7  -175   177    -4  -.13   22   22 |     ---     ---    ---    ---
        |                     51     5                       |

       
       
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 3.1627.0   GPS week: 1627   Day: 0   MJD: 55633.000                            

        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  ---  ---  ---  ---  382  ---  ---  ---  ---    0 |    71  ---  ---  ---  ---  254  ---  ---  ---  ---    69
   2  |    9   21    7   10   14    6   24   13    9   12    4 |    20   24   20   22   24   19   21   23   24   22    18
   3  |    6   12    5    7   16    4   15   11    5    8    3 |    14   19   13   14   16   13   16   15   16   12    10
   4  |    8   20    9    8   14    4   15   12   11   13    4 |    28   35   28   28   35   30   37   31   32   30    27
   5  |   10   19    8    8   13    6   25   10    7   49    5 |    18   23   22   28   27   20   22   26   22   54    19
  X6  |    7   12    5    7   14    4  ---   12    7   16    3 |    15   18   12   17   15   14  ---   17   18   16    12
   7  |   10   21    9   10   20    6   21   16   11   18    5 |    42   45   43   35   48   39   45   38   45   37    38
   8  |   11   18   11    9   12    5   15    9   10   22    4 |    18   25   17   15   25   15   24   15   20   25    15
   9E |   13   23   13   10   18    6   18   15    9   21    5 |    29   34   28   33   25   27   28   33   32   28    27
  10  |    8   14    6    6   10    3   12    9    6   11    3 |    33   33   37   37   41   34   36   39   39   29    34
  11E |    6   19   10   11   11    5   25   13    9   10    4 |    24   33   26   24   31   23   31   26   23   23    22
  12  |   11   23    8   10   14    5   26   10   11   32    5 |    16   28   20   24   30   17   29   16   19   25    17
  13  |    7   20    7   11   18    5   22    8    7   15    4 |    20   36   26   24   40   22   34   21   23   21    22
  14  |    8   23    9   10   14    7   24   11    9   16    4 |    23   25   23   23   31   19   28   22   25   23    20
  15  |   10   23   13   11   17    3   29   13    6   22    5 |    14   27   23   21   28   16   29   21   16   23    16
  16  |    8   21    7   11   12    5   28    9    6   26    4 |    20   27   13   21   18   14   26   18   15   19    13
  17  |    8   20   11   14   18    5   25   14   12   17    5 |    21   34   24   23   31   24   37   22   27   25    22
  18  |   10   23   13   15   11    6   28   13    9   25    5 |    18   28   25   30   30   19   30   24   21   22    20
  19  |   11   25   10   11   17    3   29   12   10   20    5 |    23   36   20   23   19   24   37   22   28   28    21
  20  |   12   18   11   29   13    7   24   15    9   24    6 |    21   29   28   37   27   21   27   26   25   20    21
  21  |    8   20    9    8   18    4   26   10   10   11    4 |    36   42   40   37   53   39   42   39   36   37    38
  22  |   10   21   12    8   11    5   26   12   10   30    5 |    25   30   30   31   33   23   27   31   29   33    25
  23  |    8   21    5   10   14    5   23   12    9   19    4 |    22   37   26   25   33   23   33   21   24   26    23
  24  |    8   17   10   12   12    3   20   12    8   19    4 |    26   38   27   30   29   25   37   23   23   33    25
 X25  |    9   17    7    9   11    3   27   15    8  ---    4 |   225    8  228  225    6  225    8  224    6  ---   226
  26  |   10   15    9   11    9    5   11   15    7   20    4 |    12   19   13   19   16   10   19   15   12   18     9
  27E |   15   29   15   14   20    6   20   22   16   16    6 |    33   43   33   33   41   34   24   45   37   40    32
 X28  |    8  ---   11   10   14    6   23   10    8   25    4 |    23  ---   22   25   30   21   30   25   24   24    22
  29  |    9   25    6   10   16    4   24   12    9   15    4 |    19   37   25   22   30   24   36   24   26   18    21
  30  |    8   12    9   10   14    3   18   10   11   14    4 |    26   26   19   27   28   22   22   27   25   25    22
  31  |    6   23    9   10   21    4   16   12    8   14    4 |    37   41   32   30   34   34   38   33   39   34    31
  32  |    9   18   10   10   12    7   19   16    8   19    4 |    22   25   27   29   29   22   23   29   24   21    23
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |    9   21   10   12   15    5   22   13    9   21      |T   31   30   31   32   29   36   29   31   25   26    30
 WRMS |    9   21    9   11   14    5   22   12    7   17      |NE  31   27   31   33   26   38   27   31   22   24    30
 MEDI |    8   20    9   10   14    5   23   12    9   18      |MD  22   29   25   25   30   22   29   24   24   25    22

Table 3.1627.1   GPS week: 1627   Day: 1   MJD: 55634.000                            

        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  ---  ---  ---  ---  130  ---  ---  ---  ---    0 |    43  ---  ---  ---  ---  197  ---  ---  ---  ---    43
   2  |    7   22    6    9   16    6   23   10    9   12    4 |    22   25   20   26   28   22   28   26   32   21    22
   3  |    8   14    4    7   13    3   14    9    7    8    3 |    13   16   13   15   18   11   13   14   19   13    12
   4  |    9   21    8    8   14    6   14    9   11   20    4 |    25   33   25   29   28   22   34   29   31   21    26
   5  |    9   20    8   13   13    7   22   10   10   45    5 |    17   23   20   25   25   17   25   22   26   46    18
   6  |    9   14    4    8   12    4   13   10    6   15    3 |    16   18   15   18   19   14   14   17   23   17    14
   7E |   16   17    7   11   14    6   16   10    8   12    4 |    46   51   48   44   48   40   47   44   52   44    46
   8  |   14   23    8    6   13    5   13   10   11   25    4 |    17   32   22   15   23   15   27   17   25   26    16
   9E |   16   20   11   10   17    6   16   16   14   24    5 |    31   35   30   34   26   30   34   40   37   32    30
  10  |   10   13    6    7   10    4   10    7    9   10    3 |    25   25   29   26   30   26   28   29   33   22    26
  11E |    8   20   10    7   13    2   24   13   10   12    4 |    15   29   19   20   27   18   27   18   24   20    17
  12  |   11   24    6   10   16    6   25    8    8   32    5 |    17   29   21   23   26   20   31   18   25   26    19
  13  |    6   20    7    8   22    5   21    7    9   15    4 |    19   29   24   17   39   18   31   19   28   17    20
  14  |   10   26    6    8   14    4   29   14    9   17    4 |    20   29   21   20   30   19   29   22   21   19    19
  15  |   12   25   10    8   18    6   24   16   12   21    5 |    17   28   21   18   27   15   27   26   21   23    17
  16  |    8   26    6   10   12    5   27    8    9   27    4 |    15   25   13   17   22   14   24   14   20   16    12
  17  |   11   20    8   12   19    4   22    8   12   16    4 |    26   33   26   19   32   21   32   23   28   20    21
  18  |   13   20    9   13   11    5   26   11    9   21    5 |    15   30   23   25   27   21   28   22   22   23    20
  19  |    9   27   11    8   15    3   27   11    9   22    5 |    19   30   16   19   17   18   29   19   24   24    16
  20  |    9   23    8   10   10    4   21   13    9   22    4 |    19   28   22   22   24   19   28   25   32   21    20
  21  |    9   17   11    9   17    4   26    8    9    7    4 |    34   38   36   38   51   33   39   35   42   34    36
  22  |   12   19    8   11   11    5   26   11    8   24    4 |    18   28   23   26   28   22   28   26   25   31    22
  23  |    8   27    6    6   15    5   26   10   11   19    4 |    22   32   23   19   30   19   33   23   30   19    20
  24  |    7   21    7    8   13    4   14   12    8   17    4 |    25   41   27   27   30   24   36   22   29   30    26
 X25  |   11   15    5    8   16    5   26   14   10  ---    4 |    91    7   93   96    7   94    9   93    9  ---    94
  26  |    9   16    8    8   11    6   15   11    8   17    3 |    15   20   16   15   18   12   22   16   19   16    12
 X27E |   15   25   13   12   21    7  ---   24   19   31    7 |    18   31   22   23   32   19  ---   34   35   29    20
  28  |   12   21    6    9   14    3   20   10    9   22    4 |    19   32   23   20   31   16   31   18   25   17    19
  29  |    9   22    6    9   14    3   25   10    9   16    4 |    21   33   25   25   30   22   35   24   26   18    23
  30  |    8   11    5    8   13    4   16    8    8   12    3 |    21   18   17   23   24   20   17   20   26   19    18
  31  |   15   21    5    8   15    5   21   11   10   13    4 |    37   47   39   43   43   39   39   39   37   39    39
  32  |    9   20    6    8   16    4   21   12    9   17    4 |    18   24   18   22   23   19   20   25   31   18    19
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |   10   21    8    9   14    5   21   11    9   20      |T   24   29   25   26   27   28   28   26   27   24    24
 WRMS |   10   21    8   10   14    5   21   10    8   19      |NE  22   25   23   23   25   29   25   24   24   21    22
 MEDI |    9   20    7    8   14    5   21   10    9   17      |MD  19   29   22   23   27   19   28   23   26   21    20

Table 3.1627.2   GPS week: 1627   Day: 2   MJD: 55635.000                            

        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  ---  ---  ---  ---  157  ---  ---  ---  ---    0 |    51  ---  ---  ---  ---  150  ---  ---  ---  ---    50
   2  |   10   25   10   10   16    5   23   15   12   14    5 |    19   32   24   26   23   24   30   27   31   21    25
   3  |    8   12    6    8   14    5   12   11    8    8    3 |     7   15   12   10   15    9   18   12   10   12    10
   4  |    9   22   16   12   17    5   16   15    9   16    5 |    37   46   37   39   41   39   46   38   40   41    39
   5  |    9   21    9    9   14    7   23   13   15   38    5 |    12   27   20   22   26   15   28   22   20   39    17
   6  |    8   13    7    8   15    4   13   12    9   16    3 |    10   16   15   13   16   10   18   15   13   18    11
   7E |    9   13    7   11   15    4   21    9    8    9    3 |    26   37   29   29   37   28   39   30   28   31    29
   8  |   11   26    7    6   14    4   13   13   10   20    4 |    14   34   19   13   24   15   29   14   16   27    17
   9E |   15   21   10   12   19    4   18   20   15   18    5 |    28   32   26   27   19   28   31   38   32   21    26
  10  |    9   12    9    6   11    4   10   10    7   11    3 |    22   28   30   28   33   24   31   30   25   22    26
  11E |    7   19    8   10   15    6   26   15   10   11    4 |    16   24   17   12   24   13   28   16   19   14    15
  12  |   12   24    9   10   20    6   24    9   10   33    5 |    13   28   20   15   27   16   27   13   19   24    17
  13  |    7   18    9    9   21    6   27   10    7   12    4 |    17   31   23   19   38   19   36   18   19   17    19
  14  |    9   28    8    8   19    4   29   14    9   17    5 |    16   27   22   19   32   18   33   22   20   17    20
  15  |   11   22   10   11   20    5   26   12   11   18    5 |    13   27   21   18   27   16   30   19   16   18    17
  16  |    8   23    8   10   12    6   24   11   10   24    4 |    11   25   16   17   19   11   27   14   13   15    14
  17  |    8   21   11   11   19    6   25   13   11   17    5 |    18   32   17   18   29   17   35   21   23   22    18
  18  |   11   23    9   11   19    6   28   11    9   21    5 |    19   35   28   27   32   25   36   26   22   21    25
  19  |    9   24   11    9   16    5   23   15    9   20    5 |    20   32   22   21   16   22   34   20   25   25    21
  20  |    8   19   11   11   13    6   24   12   10   24    4 |    15   26   19   25   22   17   24   21   22   25    17
  21  |    9   23    5    9   20    8   26   12   10    9    4 |    36   44   41   39   48   40   42   38   35   38    39
  22  |   10   21   12    8   16    6   27   13    6   21    5 |    18   30   25   23   31   22   32   25   23   24    23
  23  |    7   25    8    8   17    4   29   11    8   18    4 |    16   29   20   17   27   17   33   19   19   18    16
  24  |    8   17    8   10   17    6   18   16   11   14    4 |    23   35   25   28   29   23   36   21   26   30    26
 X25  |   20   19    7    8   19    8   26   15   13  ---    6 |   323   11  327  324    9  326   16  325    6  ---   326
  26  |    6   16    8    9   11    4   17   11   11   17    3 |    12   21   14   14   17   13   23   14   15   15    14
 X27E |   15   21   16   11   26    6  ---   32   18  ---    8 |    17   29   23   19   34   19  ---   32   30  ---    22
  28  |    8   21   11   11   17    4   23   14   10   22    5 |    21   32   26   21   32   21   33   21   24   18    23
  29  |    9   25    8    9   18    5   23   11    7   15    4 |    18   37   21   19   25   20   33   20   20   16    21
  30  |    8   13   10    7   11    6   12   10    8    7    3 |    26   24   24   27   28   24   29   28   22   25    25
  31E |    6   23    9   11   23    5   19   10    8   13    4 |    31   45   37   33   42   35   40   33   36   33    35
  32  |    9   20   10    7   15    5   17    9    9   17    4 |    18   23   21   22   27   20   25   25   19   20    20
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |    9   21    9    9   17    5   22   13   10   18      |T   29   29   32   31   27   34   30   32   22   23    31
 WRMS |    9   21    9   10   16    5   22   12    8   20      |NE  30   26   34   33   25   36   28   33   18   20    33
 MEDI |    9   21    9    9   17    5   23   12   10   17      |MD  18   29   22   21   27   20   31   21   22   21    21

Table 3.1627.3   GPS week: 1627   Day: 3   MJD: 55636.000                            

        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  ---  ---  ---  ---  190  ---  ---  ---  ---    0 |    72  ---  ---  ---  ---  195  ---  ---  ---  ---    72
   2E |   10   21   10   10   18    4   21    8   12   13    4 |    30   33   30   35   36   32   34   34   37   29    30
   3  |    7   13    5    8   21    4   13    8   10    8    3 |    10   17   12   12   20   10   16   13   16   13    11
   4E |   17   22    6   10   19    6   16   11   12   20    5 |    68   75   72   68   75   69   74   77   73   81    70
   5  |   10   20    9   12   16    5   22   10   11   31    5 |    17   24   24   25   30   19   25   25   21   34    20
   6  |    9   13    5    9   19    6   13    9   10   15    3 |    15   17   16   14   22   15   14   18   18   20    14
   7E |    8   26    8   14   14    3   21   13    8    9    4 |    23   35   26   23   33   23   31   23   31   22    23
   8  |   13   19    6   10   16    5   14   13   11   22    4 |    17   31   22   21   24   18   29   21   24   28    19
   9E |   17   18   11   14   24    5   17   19   13   18    5 |    32   34   31   34   28   31   33   40   35   28    29
  10  |    9   11    7   21   13    5   12    9   11   12    4 |    27   30   35   30   37   29   29   34   30   27    29
  11E |    7   21    9   11   11    3   27   13    9   12    4 |    14   27   20   17   26   14   25   17   19   17    16
  12  |    9   21    8   19   15    3   24   12    9   32    5 |    16   26   22   34   28   19   29   18   21   28    19
  13  |    6   19    7   10   22    4   24    8    8   13    4 |    22   35   26   22   41   22   36   23   27   23    23
  14  |    9   28    7   13   16    5   28   15   11   17    5 |    19   29   23   24   33   19   28   24   24   19    21
  15  |   10   20    9   12   23    6   24    9    7   20    4 |    17   26   22   21   30   17   27   23   21   23    19
  16  |    9   24    6   12   15    7   24    8   11   27    5 |    16   25   19   19   23   15   26   17   17   17    15
  17  |    7   17    8   15   20    3   24    9   11   18    4 |    24   31   23   18   31   23   33   25   30   29    23
  18  |   14   23    8   17   16    5   27   11    7   22    5 |    16   31   28   33   36   22   30   29   23   21    24
  19  |    9   24   12   10   18    6   26   11   10   20    5 |    21   35   17   21   19   21   32   20   25   26    19
  20  |    8   21   11   11   13    6   24    9   10   25    4 |    20   30   29   27   29   20   27   23   30   27    22
  21  |   10   25    5   10   23    4   18    9   11   12    4 |    32   47   43   43   53   38   40   39   40   39    40
  22  |   10   22    8   13   14    6   26   12   10   21    5 |    19   29   26   32   38   22   26   31   24   26    25
  23  |    9   24    6   11   16    8   27   10    7   18    4 |    22   37   24   25   33   22   36   26   26   28    24
  24  |    6   19    9   12   13    5   17   13    9   16    4 |    20   34   23   26   30   21   33   20   24   27    22
 X25  |  120  ---   27   28  ---   13  ---   37  ---  ---   21 |   671  ---  685  693  ---  688  ---  694  ---  ---   689
  26  |    8   15    7    8   15    4   13    8    9   17    3 |    12   20   15   17   20   12   19   18   14   16    13
 X27E |   16   21    7   13   29    4  ---   22   18   19    6 |    21   30   21   24   40   22  ---   34   34   27    23
  28  |    9   22   10   12   16    3   19   15    9   21    5 |    18   30   27   25   32   20   29   21   20   19    22
  29  |    9   24   13   14   17    6   24    9   13   16    5 |    19   32   19   25   24   19   33   22   21   23    19
  30  |    9   12    5   11   16    6   11    9    9   12    3 |    24   27   26   31   34   24   24   29   29   27    27
  31E |    8   25    7   10   20    5   17   14   12   14    4 |    19   31   19   18   29   21   28   26   24   21    18
  32  |   10   20    7   11   13    8   20    6   10   17    4 |    20   23   25   28   29   20   22   26   29   21    23
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |   10   21    8   12   17    5   21   11   10   19      |T   43   31   46   47   32   48   29   48   26   26    45
 WRMS |    9   21    9   14   17    5   21   10    9   19      |NE  49   27   52   54   29   56   27   53   23   23    51
 MEDI |    9   21    8   12   16    5   21   10   10   17      |MD  20   30   24   25   30   21   29   24   24   26    22

Table 3.1627.4   GPS week: 1627   Day: 4   MJD: 55637.000                            

        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  ---  ---  ---  ---  129  ---  ---  ---  ---    0 |    53  ---  ---  ---  ---  120  ---  ---  ---  ---    49
   2E |    8   24   14   12   19    4   23   11   13   13    5 |    19   23   18   21   23   16   25   19   27   12    16
   3  |    9   17    7    9   14    6   14    9   10   11    3 |    11   16   14   12   14   10   14   11   14   12    11
   4E |   16   23   14    9   20    8   19   13   20   36    6 |   101  106  108  105  102  109  106  106  108  115   105
   5  |    7   20   10   11   15    5   23   11   12   26    4 |    17   25   23   25   22   18   26   24   20   30    18
   6  |    8   17    6    8   12    6   17   12    9   16    3 |    12   18   13   14   12   12   15   13   15   15    12
   7E |    7   18    8   13   18    4   21   11    5   12    4 |    19   23   19   19   29   16   25   21   22   21    15
   8  |   11   19    7    9   18    5   14   19    9   22    4 |    20   29   24   20   28   21   32   21   27   29    21
   9E |   15   21   13   12   17    5   18   22   16   18    5 |    32   33   32   29   29   30   33   39   37   24    30
  10  |    8   16    8   16   11    4   14   12   12   14    4 |    23   28   30   25   26   25   29   29   27   23    24
  11E |    7   23    8   10   11    5   23   18    9   11    4 |    17   29   18   18   24   16   25   21   21   18    16
  12  |   10   23    8    7   20    5   21   11   11   33    5 |    21   28   23   21   29   20   30   22   29   28    22
  13  |    4   21    7    7   20    5   24    9    9   13    4 |    21   36   28   20   40   20   36   23   23   23    23
  14  |   10   28   11   16   14    6   27   14   10   15    5 |    21   28   28   27   32   23   31   26   25   20    22
  15  |   11   25   11   12   15    7   26   12    7   18    5 |    19   32   28   25   27   23   31   25   23   23    23
  16  |    8   27    7    9   13    3   28    9    9   27    5 |    16   27   20   19   21   15   28   17   17   18    15
  17  |    6   21   11   11   15    6   25   14   10   19    4 |    20   33   24   19   27   19   36   21   20   24    19
  18  |   12   25   10   15   19    5   31   14    8   25    5 |    16   31   29   30   32   22   33   26   25   17    23
  19  |    9   26    9   11   18    3   28   15    9   19    5 |    24   35   20   20   18   20   35   23   26   27    22
  20  |    7   22   11    7   10    5   25   12    6   26    4 |    25   28   27   25   26   21   27   25   26   25    22
  21E |    7   21   10   11   16    6   24   15    6    9    4 |    52   51   52   52   53   50   53   53   55   51    51
  22  |   11   24   13   10   15    7   35   15    9   23    5 |    23   29   32   31   37   25   30   30   30   26    28
  23  |    7   26    8   10   14    5   26   13    6   17    4 |    22   36   22   20   30   19   32   24   23   23    20
  24  |    7   33    9   13   16    5   18   18    9   16    5 |    31   47   28   29   33   28   36   27   29   31    29
 X25  |    8   18    6    7   17    5  ---   11    6  ---    4 |   786   10  800  804    6  800  ---  802    6  ---   800
  26  |    6   18    7    9   12    5   13   13    7   18    3 |    18   23   20   19   17   16   21   19   17   22    17
  27E |   15   21   13   10   23    5   18   28   21   18    6 |    18   27   20   21   31   19   20   37   35   21    20
  28  |    7   23    8   10   13    5   25   16   10   21    4 |    22   32   25   21   32   23   33   24   21   20    21
  29  |    8   25    8   10   19    5   21   13    7   16    4 |    21   33   17   19   27   20   35   23   28   19    19
  30  |   12   15    7   10   19    5   18   19    8   11    4 |    71   72   72   74   66   69   74   74   73   69    71
  31E |    8   21    7    8   21    3   20   15    9   12    4 |    16   26   19   17   28   16   25   19   21   18    18
  32  |    9   20   10    8   11    6   20    9    8   19    4 |    24   26   28   28   30   26   29   32   30   22    26
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |    9   22   10   11   16    5   22   15   10   19      |T   50   32   53   52   30   52   33   54   29   27    50
 WRMS |    9   22    9   11   16    5   22   13    8   20      |NE  56   29   61   59   27   60   31   60   24   24    57
 MEDI |    8   21    8   10   16    5   21   13    9   18      |MD  21   29   24   21   28   20   30   24   25   23    22

Table 3.1627.5   GPS week: 1627   Day: 5   MJD: 55638.000                            

        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  |   26  ---  ---  ---  ---   43  ---   19   35  ---   20 |    39  ---  ---  ---  ---   65  ---    4    5  ---    52
   2E |    6   23    8   13   12    6   28   11    8   13    4 |    22   27   21   24   23   19   29   28   24   24    21
   3  |    8   16    7   12   16    6   17    8   11   12    4 |    11   15   13   12   18   12   18   13   19   15    11
   4E |   18   25   24   16   29   16   17   13   14   16    7 |    90   91   93   93   80   98   87   92   96   91    91
   5  |    6   20    8   18   11    6   25    8    6   23    4 |    16   22   16   27   18   16   22   21   16   26    15
   6  |    8   14    6   13   11    4   16    9   12   16    4 |    12   15   14   15   16   13   16   16   22   18    13
   7E |    9   20    7   14   12    6   23    9    9   13    4 |    15   24   20   18   27   16   25   18   21   17    15
   8  |   12   24    8   14   19    7   15   15    8   23    5 |    16   29   16   19   23   15   24   18   22   30    15
   9E |   15   22   11   11   16    4   19   20   15   19    5 |    29   32   24   30   23   28   27   41   37   24    26
  10  |    8   17    9   14   10    6   17    8    8   18    4 |    23   26   28   31   23   25   25   27   27   23    24
  11E |   11   20    8   15   19    5   25   19   12   15    5 |    14   25   16   14   26   13   25   20   18   20    13
  12  |    9   23    6    9   14    8   24   12    9   31    5 |    17   27   21   20   24   19   29   21   23   30    19
  13  |    7   27    7   12   17    3   26    9    8   14    4 |    17   35   23   20   36   17   35   19   21   20    19
  14  |    8   28    9   15   14    2   26   15   10   19    5 |    18   26   22   23   29   19   27   23   19   16    18
  15  |    8   24    8   12   18    5   27   13    7   21    5 |    16   29   21   20   26   18   27   24   20   19    18
  16  |    8   24    7   15   10    4   25   11   10   27    5 |    15   24   15   16   21   12   24   15   16   13    13
  17  |    6   25   10   15   14    4   28   13    8   19    5 |    18   33   20   17   28   18   32   17   20   21    17
  18  |   10   30    9   18   13    5   31   15    7   26    5 |    14   31   22   29   28   19   30   22   22   17    19
  19  |    8   27   12   14   16    5   30   11    8   18    5 |    21   32   19   21   20   21   32   21   22   29    19
  20  |    9   21    9   11   13    4   22   13   10   31    5 |    21   24   24   23   21   16   24   21   20   25    18
  21E |    9   24    6   16   13    4   23   14    8   10    4 |    30   38   32   32   36   29   36   34   30   32    30
  22  |   10   24    8   11   12    5   28   12   10   25    5 |    20   28   26   25   30   22   28   26   29   21    22
  23  |    9   29    7   13   12    4   29   12    7   18    5 |    19   32   23   20   27   16   32   22   18   21    17
  24  |   14   22   13   16   17    4   20   18   12   20    5 |    39   46   42   42   44   40   48   39   32   45    39
 X25  |    9   18    6   12   12    4   25   15   10  ---    4 |   318    8  322  322    7  322    8  324    5  ---   323
  26  |    6   17    7   12   11    4   19   14    7   17    4 |    11   17   14   13   15   11   18   17   15   13    11
  27E |   14   20   11   13   25    4   19   27   18   19    6 |    16   26   18   21   36   19   22   38   31   24    20
  28  |    8   23    8   13   12    5   22   14    7   21    4 |    16   32   23   20   30   18   29   19   25   17    18
  29  |    9   25    8   10   13    5   25   14   11   16    4 |    16   28   19   18   24   16   28   22   24   20    16
  30  |   12   12    6   11    9    4   15   12   10   14    4 |    47   45   46   47   44   43   46   46   42   43    44
  31E |    7   21    8    9   18    4   21   10   11   11    4 |    14   27   20   16   27   17   25   20   17   16    17
  32  |    9   20   13   11   11    4   21   11    9   23    4 |    23   22   31   27   21   21   18   26   23   20    22
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |   10   23   10   13   15    6   23   14   10   20      |T   31   29   34   34   27   32   28   34   24   25    32
 WRMS |    9   23    8   13   13    5   23   13    8   21      |NE  32   26   35   35   24   33   26   34   20   21    33
 MEDI |    9   23    8   13   13    4   23   13    9   18      |MD  17   27   21   21   26   18   27   21   22   21    18

Table 3.1627.6   GPS week: 1627   Day: 6   MJD: 55639.000                            

        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  ---  ---  ---  ---  121  ---  ---  ---  ---    0 |    47  ---  ---  ---  ---  101  ---  ---  ---  ---    50
   2E |    8   31    7   13   26    4   28   12   11   12    5 |    17   28   14   18   26   15   25   23   22   16    16
   3  |    9   13    8   11   14    5   17   10    8   13    3 |    11   17   15   13   17   11   19   13   14   15    12
   4E |   10   17    9   14   18    5   15   13   10   22    4 |   100  100   98   94  102   97   96   96   99  104    94
   5  |    8   22    7   12   15    5   25   10    9   22    4 |    21   27   22   29   30   23   24   28   24   29    21
   6  |    8   13    5   13   13    6   18   11    6   17    3 |    11   18   14   16   18   11   16   15   15   18    12
   7E |    9   16    7   15   17    4   24   11   12   15    4 |    21   28   23   23   26   21   27   26   28   26    21
   8  |   11   27    8   11   20    5   19   11   11   27    5 |    15   29   17   18   25   18   27   17   21   35    17
   9E |   16   24   13   15   16    5   18   21   19   18    6 |    34   38   31   30   30   31   33   40   36   31    30
  10  |    8   15    3   12   11    5   16   10   11   14    3 |    36   40   43   38   45   39   40   44   39   39    38
  11E |    8   20    9   15   20    6   26   14    9   16    5 |    17   29   20   18   27   18   29   21   21   21    20
  12  |   10   23    6   11   15    7   23   15    8   32    5 |    20   28   23   23   28   21   27   22   21   34    20
  13  |    7   21   10   13   22    4   25   14    8   16    5 |    23   34   27   25   38   23   35   25   27   22    23
  14  |   10   27   10   12   14    5   26   12    8   21    5 |    22   33   31   29   35   24   32   30   21   27    26
  15  |    7   26    8   13   18    6   29   11    8   24    5 |    21   31   26   26   31   22   32   27   23   27    24
  16  |   10   26    7   16   13    6   25   10    9   32    5 |    21   30   24   27   31   21   29   24   23   23    23
  17  |    6   25    8   12   16    3   27    9   10   15    4 |    27   40   30   25   34   26   43   24   24   28    26
  18  |   10   26   11   16   15    6   31   10   11   32    5 |    18   32   28   34   35   23   31   30   23   31    25
 X19  |   11   27   11   12  ---    6   28   13   10   19    5 |    26   40   20   22  ---   26   39   25   29   32    26
  20  |    7   22   10   18   11    7   22   16    8   35    5 |    27   28   34   35   29   27   25   31   31   32    27
  21E |    9   28    7   14   14    6   28    9    8   12    4 |    40   48   44   46   48   42   43   45   41   46    44
  22  |    8   25   10   12   10    6   27   13    8   29    5 |    28   35   38   38   40   31   32   40   31   32    33
  23  |    8   30    8   12   14    4   28   14    8   22    5 |    23   35   27   26   31   21   33   26   24   24    22
  24E |   35   18   13   18   31   15   21   16   11   24    7 |    52   55   56   57   57   51   56   55   46   55    53
 X25  |   12   16    8   11   16    5   24   14    8  ---    4 |   326    8  331  330    6  329    9  330    4  ---   331
  26  |    6   18    6   15   12    5   21   19    9   21    4 |    15   23   17   18   19   16   25   21   18   25    16
 X27E |   13   25   12   15   23    5  ---   26   20   19    7 |    26   32   27   28   46   28  ---   41   38   30    31
  28  |    8   23    9   10   11    7   23   13    9   23    4 |    21   33   28   27   34   23   34   27   26   26    25
  29  |    8   24    8    9   16    6   25   20    7   16    4 |    22   35   21   21   25   22   35   24   25   22    22
  30  |   10   14    8   14   13    5   16   11    5   17    4 |    59   64   65   64   66   60   64   66   61   63    64
  31E |   11   22   10   14   22    5   18   11    9   11    4 |    20   31   24   22   32   23   29   24   25   24    23
  32  |    9   18    7   13    9    6   18   12    7   20    4 |    32   31   39   38   38   33   28   40   36   29    34
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |   11   22    9   14   17    6   23   13   10   22      |T   37   34   40   40   34   39   33   41   29   32    39
 WRMS |    9   22    8   13   13    6   23   12    9   22      |NE  37   31   41   41   31   41   30   42   25   29    39
 MEDI |    9   23    8   13   15    5   24   12    9   19      |MD  22   32   27   27   31   23   31   27   25   28    25



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 4.1627   GPS week: 1627   MJD: 55633.0-55639.0

CENT| CLK EPO  |        BRUS       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3032 |U   11    10    28 |U    9     9    35 |U    9    10    45 |
emr | emr 2939 |U   14    11    28 |U   11    10    34 |    10    11    49 |
esa | esa 2976 |    10     9    26 |U    9     8    35 |     9     9    45 |
gfz | gfz 2966 |U    9     9    21 |U   11     9    42 |U    9    11    43 |
grg | grg 2948 |    18    18    34 |U   10     9    43 |     9     9    56 |
igr | igr 2969 |    14    11    41 |     9     9    35 |     8     9    44 |
igs | igs 2964 |     8     8    20 |     9     9    34 |     8     9    46 |
jpl | jpl 2869 |U   11    10    31 |U    9    10    34 |U   10    10    47 |
mit | mit 2989 |U   14    12    38 |U   10    10    37 |U    9    10    49 |



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 5.1627.0   GPS week: 1627   Day: 0   MJD: 55633.0

CENT| CLK EPO  |        BRUS       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3040 |     7     8    18 |  ----  ----  ---- |     7     7    19 |
emr | emr 2876 |    11     9    21 |  ----  ----  ---- |    12    11    29 |
esa | esa 2976 |     9     8    17 |  ----  ----  ---- |     6     6    18 |
gfz | gfz 2968 |    10     9    21 |  ----  ----  ---- |     6     5    16 |
grg | grg 2976 |    10     9    21 |  ----  ----  ---- |     7     6    19 |
igr | igr 2976 |     9     8    19 |  ----  ----  ---- |     6     5    19 |
igs | igs 2976 |     9     8    17 |  ----  ----  ---- |     6     5    18 |
jpl | jpl 2866 |    12     9    21 |  ----  ----  ---- |     8     6    17 |
mit | mit 2976 |     7     7    19 |  ----  ----  ---- |     7     6    22 |

Table 5.1627.1   GPS week: 1627   Day: 1   MJD: 55634.0

CENT| CLK EPO  |        BRUS       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3024 |     8     9    20 |  ----  ----  ---- |    19    27   218 |
emr | emr 2968 |    10    12    29 |  ----  ----  ---- |    19    25   222 |
esa | esa 2976 |     8     6    15 |  ----  ----  ---- |    18    22   202 |
gfz | gfz 2968 |     9     9    20 |  ----  ----  ---- |    19    26   196 |
grg | grg 2976 |     9     5    15 |  ----  ----  ---- |    15    22   273 |
igr | igr 2976 |     7     7    16 |  ----  ----  ---- |    18    25   209 |
igs | igs 2976 |     8     8    15 |  ----  ----  ---- |    18    26   215 |
jpl | jpl 2876 |    12    11    39 |  ----  ----  ---- |    22    23   203 |
mit | mit 2976 |    10     8    19 |  ----  ----  ---- |    20    30   221 |

Table 5.1627.2   GPS week: 1627   Day: 2   MJD: 55635.0

CENT| CLK EPO  |        BRUS       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3038 |     6     7    12 |    12    11    32 |     7     6    15 |
emr | emr 2967 |    15     7    38 |    14    10    33 |     9     7    18 |
esa | esa 2976 |    16    15    28 |    11    10    38 |     7     5    17 |
gfz | gfz 2968 |     8     8    21 |    12     9    51 |     7     5    15 |
grg | grg 2975 |    20    21    40 |    11     9    41 |     7     5    17 |
igr | igr 2961 |     7     5    16 |    12    10    37 |     7     5    14 |
igs | igs 2975 |     7     5    15 |    12    10    35 |     7     5    15 |
jpl | jpl 2874 |    14     8    38 |    12    11    36 |     9     7    14 |
mit | mit 2976 |     7     7    15 |    12    11    39 |     8     6    17 |

Table 5.1627.3   GPS week: 1627   Day: 3   MJD: 55636.0

CENT| CLK EPO  |        BRUS       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3036 |    14    10    47 |     9     7    44 |    10    11    16 |
emr | emr 2871 |    21    15    38 |    11     9    38 |     7     9    18 |
esa | esa 2976 |    19    15    53 |     8     8    40 |     9     7    17 |
gfz | gfz 2968 |    21    17    34 |    12     9    47 |     9     8    20 |
grg | grg 2880 |    21    18    38 |     9     9    55 |     7     6    20 |
igr | igr 2959 |    33    15   137 |     7     8    40 |     8     7    16 |
igs | igs 2925 |    12    10    27 |     9     8    41 |     7     6    17 |
jpl | jpl 2779 |    11    13    30 |     8    11    38 |     8     9    26 |
mit | mit 2976 |    32    19    61 |     9     9    40 |     6     4    16 |

Table 5.1627.4   GPS week: 1627   Day: 4   MJD: 55637.0

CENT| CLK EPO  |        BRUS       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3042 |    12    10    52 |     9    10    33 |     5     5    17 |
emr | emr 2966 |     9     8    18 |     9    10    34 |     9     8    19 |
esa | esa 2976 |     7     8    26 |     9    11    33 |     7     8    22 |
gfz | gfz 2964 |     6     6    17 |    11    13    39 |    10    14    20 |
grg | grg 2976 |     7    10    24 |    10    10    43 |     8     8    24 |
igr | igr 2974 |     7     8    28 |     8    10    34 |     6     6    19 |
igs | igs 2974 |     7     7    24 |     9    10    34 |     6     6    19 |
jpl | jpl 2863 |    11    10    37 |     9    10    37 |     7     7    26 |
mit | mit 2976 |    10     9    49 |    10    10    37 |     9     8    23 |

Table 5.1627.5   GPS week: 1627   Day: 5   MJD: 55638.0

CENT| CLK EPO  |        BRUS       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3032 |    19    23    38 |     8     7    27 |     8     8    19 |
emr | emr 2964 |    23    21    41 |    10     8    28 |     9    10    20 |
esa | esa 2976 |     7     6    25 |     8     7    30 |    12    10    24 |
gfz | gfz 2965 |     7     7    23 |     9     7    35 |     9     9    18 |
grg | grg 2976 |    51    54    83 |     8     9    32 |    10     8    21 |
igr | igr 2974 |    26    31    52 |     8     6    29 |     8     8    19 |
igs | igs 2968 |     7     8    28 |     8     6    29 |     9     9    22 |
jpl | jpl 2958 |    11    11    35 |     8     7    23 |     9     9    20 |
mit | mit 3072 |    22    27    70 |     8     8    33 |     7     6    19 |

Table 5.1627.6   GPS week: 1627   Day: 6   MJD: 55639.0

CENT| CLK EPO  |        BRUS       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3018 |     8     7    13 |     9     8    39 |     6     5    14 |
emr | emr 2964 |     7     8    14 |     9    13    37 |     7     9    18 |
esa | esa 2976 |     7     7    20 |     9     7    33 |     5     6    16 |
gfz | gfz 2965 |     6     6    14 |    10     7    38 |     6     7    16 |
grg | grg 2880 |     9     7    20 |     9     9    43 |     9     8    17 |
igr | igr 2967 |     6     6    17 |     9     9    35 |     5     6    16 |
igs | igs 2960 |     6     7    16 |     9     9    34 |     5     6    14 |
jpl | jpl 2868 |     9     8    15 |     8    11    35 |    10     9    23 |
mit | mit 2976 |     8     9    33 |    11    14    39 |     9     9    23 |


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 6.1627   GPS week: 1627   MJD: 55633.500-55639.500

                                                         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 |     -10     -42     137     168      2 |       8     18
            |      19      39      66     103      4 |       3
emr   uuuuu |       8      39     -91     223     -3 |      52     53
            |      36      23      43     145      4 |       3
esa   uuuuu |     -71     -14      88    -176     -6 |       7     17
            |      15      15      77      63      4 |       3
gfz   uuuuu |      12      40      20     -98      1 |       8     17
            |      20      21      66     116      3 |       3
grg   uuuux |      36     -35       9     102     11 |      -2     25
            |      38      45     111     111     19 |       1
igr   xxxxx |     -36      46      69      22    -13 |       9     19
            |      17      26      33      81      5 |       4
irf   xxxxx |      23      19     -78      48     -1 |       8     18
            |      11      15      51      38      3 |       3
jpl   uuuuu |      40       6     127     267      2 |      16     24
            |      46      28      90     176      9 |       4
mit   uuuuu |      26      14    -197     126      1 |      18     24
            |      15      22      86      80      3 |       3
ngs   uuuuu |       3     -14     -20     -78     -1 |       1     12
            |      28      23      88      95      4 |       2
sio   uuuuu |      31     -41      71      55     19 |      30     38
            |      21      19      70      41      8 |       9


Table 7.1627.0   GPS week: 1627   Day: 0   MJD: 55633.500

                                                         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 |      -1     -46     140     207     10 |       4     16
emr   uuuuu |     -33      49    -120     264     -5 |      49     51
esa   uuuuu |     -63     -23     183    -264      0 |       3     17
gfz   uuuuu |      37      51      12     -16      0 |       3     15
grg   uuuux |      53      23     -67     230      5 |      -3     24
igr   xxxxx |     -34      20      87      -8    -15 |      12     20
irf   xxxxx |       7      -9    -153       4     -3 |       5     18
jpl   uuuuu |     -10     -12     114     500     -3 |      11     20
mit   uuuuu |      -1     -22    -325      13      0 |      13     22
ngs   uuuuu |       9      -7      80    -130     -4 |       0     11
sio   uuuuu |      23     -72       8      30     32 |      15     26

Table 7.1627.1   GPS week: 1627   Day: 1   MJD: 55634.500

                                                         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       3     189     287      2 |       6     18
emr   uuuuu |       0      66    -136      65     -5 |      50     52
esa   uuuuu |     -82     -11     131    -197     -7 |       5     18
gfz   uuuuu |      27      76     -20      13      6 |       4     17
grg   uuuux |      52      12      -2     192     29 |      -4     23
igr   xxxxx |     -45      69      78     -72     -6 |      10     18
irf   xxxxx |      33       8     -77      32     -3 |       6     19
jpl   uuuuu |      60     -19      87      87     10 |      12     21
mit   uuuuu |      35      -5    -211      56      0 |      15     24
ngs   uuuuu |     -19     -64      31      17     -7 |       1     12
sio   uuuuu |      56     -53      39      89     28 |      21     33

Table 7.1627.2   GPS week: 1627   Day: 2   MJD: 55635.500

                                                         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    -108      54     308      1 |       9     19
emr   uuuuu |     -21      37    -140     138     -8 |      52     54
esa   uuuuu |     -76     -14      64     -72    -14 |       7     18
gfz   uuuuu |      18      26     114       5     -1 |       8     17
grg   uuuux |      38    -104     236      56    -14 |       0     25
igr   xxxxx |      -5      20      91     -43     -6 |      11     18
irf   xxxxx |      30      23    -121      84     -2 |       9     19
jpl   uuuuu |      67      54     206      20     14 |      15     23
mit   uuuuu |      36      22    -265     151      1 |      19     25
ngs   uuuuu |     -24       0    -103    -180      1 |       2     11
sio   uuuuu |      53     -39     -37     130     19 |      28     37

Table 7.1627.3   GPS week: 1627   Day: 3   MJD: 55636.500

                                                         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     -11     237     107     -2 |      12     19
emr   uuuuu |     -16      69     -23      31      0 |      55     56
esa   uuuuu |     -90     -34     122    -123     -3 |      10     16
gfz   uuuuu |      23      21      -2     -50      2 |      11     17
grg   uuuux |     102     -32     -21     173    -10 |       0     25
igr   xxxxx |     -48      34      87      44    -15 |      12     19
irf   xxxxx |      30      24      -1      65     -3 |      12     19
jpl   uuuuu |      11      31      18     193     10 |      20     26
mit   uuuuu |      36      27     -72     205     -2 |      23     26
ngs   uuuuu |       8      -8    -141    -195     -2 |       4     12
sio   uuuuu |      39     -40     138      56     17 |      36     41

Table 7.1627.4   GPS week: 1627   Day: 4   MJD: 55637.500

                                                         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 |     -22     -75     101      62      0 |      11     18
emr   uuuuu |      15      16     -77     322     -4 |      54     55
esa   uuuuu |     -56      -1      73    -167     -4 |      10     16
gfz   uuuuu |      -5      47     106    -145      0 |      11     17
grg   uuuux |      -9     -65      10     -69     34 |      -3     25
igr   xxxxx |     -56      48      95     -13    -19 |      10     17
irf   xxxxx |      30      20     -81      20     -2 |      11     18
jpl   uuuuu |     122      15      74     286     -8 |      20     26
mit   uuuuu |      41      15    -216      88      0 |      22     25
ngs   uuuuu |     -22     -12     -76      43      3 |       2     11
sio   uuuuu |      29     -36     102      43     13 |      38     43

Table 7.1627.5   GPS week: 1627   Day: 5   MJD: 55638.500

                                                         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 |     -40     -37     168      54      4 |       9     18
emr   uuuuu |      62      21     -80     404     -3 |      52     54
esa   uuuuu |     -81      10     -63    -192     -6 |       8     16
gfz   uuuuu |     -21      46     -11    -279     -3 |       9     17
grg   uuuux |      14     -57      23      -4     18 |      -1     25
igr   xxxxx |     -40      90       8      81    -14 |       6     19
irf   xxxxx |      10      23     -28      23      1 |       8     17
jpl   uuuuu |       1     -15     101     409      2 |      19     26
mit   uuuuu |      16      15    -111     135      4 |      19     24
ngs   uuuuu |      57      -5      73     -18      2 |       1     12
sio   uuuuu |       0     -35     154      33     11 |      38     43

Table 7.1627.6   GPS week: 1627   Day: 6   MJD: 55639.500

                                                         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 |     -26     -18      72     150     -2 |       7     18
emr   uuuuu |      50      16     -63     337      3 |      48     50
esa   uuuuu |     -52     -26     104    -219     -6 |       4     16
gfz   uuuuu |       7      15     -61    -214      6 |       6     17
grg   uuuux |      -2     -22    -114     137     17 |      -2     25
igr   xxxxx |     -28      39      40     165    -17 |       1     20
irf   xxxxx |      19      41     -88     105      3 |       4     16
jpl   uuuuu |      30     -11     286     376    -10 |      16     25
mit   uuuuu |      20      48    -178     235      5 |      16     22
ngs   uuuuu |      11       0      -6     -84      0 |      -1     13
sio   uuuuu |      14     -10      93       7     15 |      37     42



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