[IGSREPORT-19797] Wk 1635 IGS Final Orbits

Jim Ray igs.acc at noaa.gov
Fri May 27 04:51:37 PDT 2011


Author:  AC Coordinator / NOAA NGS

sum-file Version 2.0
Final IGS Orbit Combination - Week 1635   (May 08, 2011 - May 14, 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:

igs1635[0-6].sp3  IGS GPS ephemeris files in SP3 format.
igs1635[0-6].clk  IGS GPS satellite and station clocks in clock RINEX format.
igs1635[0-6].cls  IGS GPS clock combination summary report.
igs16357.erp      Earth Rotation Parameters (ERP) and their rates as well as
                  Universal Time (UT1-UTC) and Length Of Day (LOD) associated 
                  with IGS ephemerides.
igs16357.sum      Complete report.

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

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

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

 3. The following centre clock solutions, which provide broadcast clock
    corrections, were excluded from the combination but kept in the combination
    statistics:
             -> Centre: NGS 

 4. The following clock solutions were excluded from the combination because they
    were biasing the combined clock solutions (clock shifts/outliers) but were
    kept for the RMS computation.  Duplicate entries can arise due to separate
    combination runs for the 30-s clocks ACs (listed first) and the 5-min clock
    ACs (listed second).
    
               Day | Centre | PRN/STA list
               ----+--------+---------------
                0  |  EMR   | 32 32
                0  |  ESA   | UNSA
                0  |  GFZ   | 8 MDVJ
                0  |  GRG   | 13 DARW DAV1 DUBR GOPE LHAZ LPGS
                0  |  JPL   | 25 32
                0  |  MIT   | 24 24 DAV1
                1  |  COD   | WROC MDVJ WROC
                1  |  EMR   | 32
                1  |  ESA   | SCH2 UNSA
                1  |  GFZ   | 20 32 CHAT MDVJ
                1  |  JPL   | 15 25 32 SCH2
                1  |  MIT   | 31 31 DAV1
                2  |  COD   | KERG DAV1 KERG NRIL
                2  |  ESA   | 32 32 UNSA
                2  |  GFZ   | 15 20 KIT3 MAW1 MDVJ STJO YELL
                2  |  GRG   | ADIS
                2  |  JPL   | 15 25 CONZ
                2  |  MIT   | 2 3 4 5 6 7 8 9 11 12 13 14 15 16 17 18 19 20 21
                2  |  MIT   | 22 23 24 25 26 27 28 29 30 31 32 2 3 4 5 6 7 8 9
                2  |  MIT   | 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27
                2  |  MIT   | 28 29 30 31 32
                3  |  COD   | DAV1
                3  |  EMR   | 10 10 CRO1 SCH2
                3  |  ESA   | SCH2 UNSA
                3  |  GFZ   | 10 20 32 ALGO MDVJ
                3  |  GRG   | AMC2 SANT
                3  |  JPL   | 10 15 25 HOB2 MDO1
                3  |  MIT   | MAW1 MAW1 MDVJ
                4  |  COD   | 17 17 DAV1
                4  |  EMR   | 10 10 32
                4  |  ESA   | IRKJ UNSA
                4  |  GFZ   | 10 18 20 22 32 FAA1 MAW1 MDVJ NYA1
                4  |  GRG   | AMC2 SANT
                4  |  JPL   | 10 15 25 32
                4  |  MIT   | 12 CAS1 MAW1 CAS1 SFER TWTF
                5  |  COD   | 17 17
                5  |  EMR   | 10 10
                5  |  ESA   | SCH2 IRKJ SCH2
                5  |  GFZ   | 10 18 20 22 32 ADIS DAV1 MAW1 MDVJ
                5  |  GRG   | AMC2 IRKJ
                5  |  JPL   | 10 25 MDO1
                5  |  MIT   | MAW1 SCH2 USNO CAS1 MAW1 USNO
                6  |  ALL   | 3
                6  |  COD   | 3 30 30 USNO USNO
                6  |  EMR   | 10 32 10 32 DAEJ DARW KOKB KOUR MAS1 NNOR PERT TIDB
                6  |  EMR   | TWTF YELL DAEJ DARW DRAO KOKB KOUR LPGS MAS1 NNOR
                6  |  EMR   | PERT STR1 SYOG THU3 TWTF WHIT YAR2 YELL
                6  |  GFZ   | 5 10 18 20 22 32 DAV1 MATE MDVJ SCH2 WSRT
                6  |  GRG   | USN3
                6  |  JPL   | 10 25 32 SCH2
                6  |  MIT   | 3 30 30 MAW1 SCH2 MAW1

 5. 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 G17 |    |    |    |    |    |  2 |  4 |

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

 7. Small rotations were applied to all the AC orbit and ERP values in order
    to align them to the 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     .1    -.3     -25     -6    -10     .41
       EMR  |    2.6    2.7    7.9       0     10      3     .60
       ESA  |    2.2   -1.6   20.1      25    -19    102     .27
       GFZ  |   -3.2     .4    -.7     -28     31      0     .37
       GRG  |    3.6    3.3   25.2      -9     10    -26     .28
       JPL  |    3.7    -.8    6.2      -4    -53     38    -.79
       MIT  |    2.7   -3.9   14.8     -11      3     -7     .36
       NGS  |    8.1   -8.4   12.4     -49    -22     15     .31
       SIO  |    1.6    1.0   -2.7       2    -85     -2     .43


 8. Starting on 22-Oct-2000 (GPS Week 1085-0; mjd=51839) all IGS clock products
    are based on the new clock combination scheme which uses the clock RINEX
    files as input if available, otherwise SP3 clocks are used. 
    The navigation solution is still based on the SP3 clocks but this will soon
    adopt the clock RINEX files as well.

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

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

    
ORBIT COMBINATION AND EVALUATION STATISTICS:                                    
--------------------------------------------                                    
      
Most combination statistics are with respect to the combined orbits and
consist of five parts. The first, Table 1, summarizes all statistics for
the week.  It contains means and standard deviations over the week of
satellite ephemeris and clock correction transformation parameters for
each centre (table 1.1635.a). It also displays the computed satellite
position sigmas for the combined orbits (table 1.1635.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 2.1635.[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 3.1635.[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 5.1635.0-6).

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 1635 summary.                       (May 08, 2011 - May 14, 2011)

Table 1.1635.a   GPS week: 1635   MJD: 55689.000-55695.000

         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  250|    0     0     1     4   -32    -5  -.24    8    7 |    -360    -213     17     92
        |    0     0     0     5    13    12   .01           |     602    1216
emr  107|    0     1     0   -28   -23    -7   .30   18   18 |    1034    -183     14    113
        |    1     2     2     8    36    12   .03           |     381    1105
esa  133|    0     0     0   -38    14    47   .28    8    7 |    -251    -475     13    106
        |    0     1     2    28    23    15   .03           |     398     959
gfz  191|   -1     0    -1    28   -65    -5  -.15   11   11 |     146     -89     22    146
        |    0     0     1    61   111    10   .03           |     248     594
grg  130|    1     0     8   -25   -44   -11   .59   15   14 |  -19432  112195     64  34681
        |    1     1     1    28    14     7   .04           |   51369  296787
igr  n/a|    0     0    -3   -18   -21     2  -.02    5    5 |    2182     148     18     89
        |    0     0     1    15    19    29   .02           |    1202    1115
jpl  124|    0     2    -3   -16    93     3   .41   20   18 |    1759    -115     17    299
        |    0     1     2    20    11    51   .04           |     473    1001
mit  260|    0    -2    -1    -7   -19   -14  -.38   11   10 |    1242     381    261    379
        |    0     0     0    22    28    12   .02           |    6121    3142
ngs  227|    0     0    -2    71    14   -37  -.20   10    8 |   23634  -92878   2423   4013
        |    0     0     1    25    71    14   .03           |   64078  247046
sio  253|   -1     3     0    -8   153    -8  -.02   20   19 |     ---     ---    ---    ---
        |    1     0     0    27    26    12   .02           |     ---     ---


Table 1.1635.b   GPS week : 1635   MJD: 55689.000-55695.000   

         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
------+------------------------------------+------------------------------------------
   2  |    5    5    5    4    4    5    5 |
   3  |    3    3    3    3    4    4    4 |
   4  |    4    4    4    4    3    4    4 |
   5  |    5    5    4    5    4    5    5 |
   6  |    3    3    3    3    3    4    4 |
   7  |    4    4    4    4    4    5    5 |
   8  |    6    5    4    4    4    4    4 |
   9  |    4    4    5    4    4    5    5 |
  10  |  ---  ---    0    5    5    4    5 |
  11  |    4    4    4    4    4    4    4 |
  12  |    5    5    5    5    5    5    5 |
  13  |    4    4    4    4    5    5    6 |
  14  |    5    5    4    4    4    5    5 |
  15  |    5    5    5    5    5    5    5 |
  16  |    4    5    5    5    5    5    5 |
  17  |    5    5    5    4    5    5    5 |
  18  |    5    5    4    4    4    4    4 |
  19  |    4    3    4    4    4    4    4 |
  20  |    4    4    4    4    4    5    5 |
  21  |    4    5    5    4    4    5    4 |
  22  |    5    4    4    4    4    5    4 |
  23  |    5    5    5    5    5    6    5 |
  24  |    3    4    4    4    4    4    4 |
  25  |    4    4    4    4    4    5    4 |
  26  |    4    4    3    3    3    4    4 |
  27  |    4    4    5    4    4    5    5 |
  28  |    5    4    4    4    4    5    5 |
  29  |    5    5    5    5    5    5    5 |
  30  |    4    3    3    4    4    4    8 |
  31  |    5    5    4    4    4    5    4 |
  32  |    4    6    6    6    5    5    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 2.1635.0   GPS week: 1635   Day: 0   MJD: 55689.000                            

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  250|    1     0     2     8   -14     4  -.24    8    7 |    -381    -684     17     78
        |                     37     8                       |
emr  107|    0     0     1   -28   -43    -6   .34   18   18 |     919    -445     16    118
        |                     20   -11                       |
esa  133|    0    -2     0     6    56    44   .33    8    8 |     394   -1294     16    109
        |                     -5    -6                       |
gfz  191|    0     0     0   -12   -12    12  -.09   10    9 |     201    -409     22    133
        |                     -2    84                       |
grg  130|    2     1     6   -32   -44   -17   .51   18   16 | -135925  785244    171 241460
        |                     96    26                       |
igr  n/a|    0     0    -3   -17   -54   -17  -.02    5    5 |     354     330     19     98
        |                     38    39                       |
jpl  124|   -1     1     0   -13   110    65   .44   20   18 |     971      -7     18    302
        |                     75   -16                       |
mit  272|    0    -1    -2   -46   -53   -36  -.37   10    9 |      16    -347     21    177
        |                     19   -14                       |
ngs  227|    0     0     0    87   -43   -51  -.19   10    8 |  168942 -653114   2037   4099
        |                   -104   -44                       |
sio  253|   -3     3    -1   -43   121    -4  -.00   20   21 |     ---     ---    ---    ---
        |                    -19   -86                       |

Table 2.1635.1   GPS week: 1635   Day: 1   MJD: 55690.000                            

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  250|    0     0     1    -1   -42    -3  -.23    7    7 |      52   -1306     19     90
        |                     50    55                       |
emr  107|    3     0     2   -32   -70   -10   .31   18   18 |     813    -523     14    108
        |                     -7     0                       |
esa  133|    0     0    -4   -45   -19    41   .29    7    7 |    -394   -1047     16    107
        |                     34    34                       |
gfz  191|   -1     0     0    44    88    -7  -.17    9    8 |     568    -844     21    148
        |                     21    70                       |
grg  130|    2     2     8   -61   -71    -8   .58   16   14 |     484   -1024     41    237
        |                    107    64                       |
igr  n/a|    0     0    -4   -39   -21   -42  -.00    6    6 |    1177      50     18     82
        |                     42    34                       |
jpl  124|    0     0    -2    -8    93   -78   .40   21   20 |    1448    -299     17    290
        |                    -43   -78                       |
mit  272|    0    -1     0    30    10    -1  -.34   11   10 |     350    -815     20    134
        |                     -1   -28                       |
ngs  227|    0    -1    -2    31   -71   -21  -.18   11    8 |    -135   -1105   1935   3849
        |                    -13    32                       |
sio  253|   -3     3     0    46   187    15  -.02   22   26 |     ---     ---    ---    ---
        |                    -50  -106                       |

Table 2.1635.2   GPS week: 1635   Day: 2   MJD: 55691.000                            

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  250|    0     0     0     0   -28   -20  -.26    8    8 |    -363    -295     18    112
        |                     18    22                       |
emr  107|    2     0     0   -26   -62   -14   .31   18   18 |     374     688     13    111
        |                    -18    -3                       |
esa  133|    0     0     0   -85    27    76   .31    8    8 |    -905     920     12    100
        |                     27    34                       |
gfz  191|   -2    -1     0   133   -32    -6  -.17   11   10 |    -179     649     23    140
        |                    -31    67                       |
grg  130|    3     0     9    -4   -26   -17   .60   14   13 |    -113     263     62    226
        |                     39     8                       |
igr  n/a|    0     0    -1   -13   -41    22   .01    5    5 |    1501     825     18     93
        |                      5    37                       |
jpl  124|    0     3     0   -17   101   -25   .45   20   17 |    1450     581     18    288
        |                    -34   -45                       |
mit  272|    0    -2    -1   -13   -17    -2  -.37   10   10 |   13960   -1003   1714   1734
        |                     -7   -26                       |
ngs  227|    1     0    -3    52    -1   -37  -.22   10    9 |    -392    -189   2142   4256
        |                     54   -19                       |
sio  253|   -1     3    -1   -27   148    -3  -.05   20   19 |     ---     ---    ---    ---
        |                    -25   -97                       |

Table 2.1635.3   GPS week: 1635   Day: 3   MJD: 55692.000                            

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  250|    0     0     0     6   -21    -3  -.24    7    6 |   -1305    2292     17     87
        |                     42    21                       |
emr  107|    1     4    -3   -16   -26   -26   .32   18   18 |    1185     832     15    107
        |                     -9   -23                       |
esa  133|    0     0     0   -49    13    27   .27    7    7 |    -148     674     13    105
        |                     45    58                       |
gfz  191|    0    -1     0    53   -26    -9  -.13   11   11 |      10     465     22    138
        |                     13   105                       |
grg  130|    2     0     9   -21   -44   -12   .59   14   14 |    -541    1337     46    217
        |                     50    24                       |
igr  n/a|    0     0    -3   -29    -9    44  -.04    5    5 |    2495    1126     17     84
        |                    -19    68                       |
jpl  124|    1     0    -2    12    97    65   .43   19   17 |    2032     760     19    319
        |                     42    23                       |
mit  272|    0    -2     0     0     0   -20  -.39   11   11 |    -682    1807     19    162
        |                     -4   -43                       |
ngs  227|    0     0    -2    52   -19   -18  -.17   10    8 |   -1322    2291   3050   4216
        |                     -8    21                       |
sio  253|    0     2    -1    -8   163   -15  -.02   21   19 |     ---     ---    ---    ---
        |                    -42  -109                       |

Table 2.1635.4   GPS week: 1635   Day: 4   MJD: 55693.000                            

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  250|    0     0     1     0   -54   -22  -.25    7    7 |     633   -1277     16     91
        |                     43    58                       |
emr  107|    0     3     0   -43     9    12   .28   17   17 |    1158     326     12     96
        |                    -15   -71                       |
esa  133|    0     0     0   -32     3    46   .25    7    7 |    -360    -471     14    109
        |                     26    33                       |
gfz  191|    0     1    -2    38   -55    -3  -.14   13   12 |     152     -47     22    159
        |                     26    98                       |
grg  130|    0     0     8   -33   -52    -6   .61   13   13 |     107    -142     39    191
        |                     56     5                       |
igr  n/a|    0     0    -2     0   -12    23  -.05    5    5 |    2851     668     17     82
        |                     25    44                       |
jpl  124|    0     1    -4   -17    76    14   .35   19   17 |    2062     260     16    297
        |                    -24     9                       |
mit  272|    0    -2    -1    -8    12   -16  -.39   11   11 |     117    -194     18    143
        |                     -4   -33                       |
ngs  227|    1    -1    -2    84    23   -29  -.19    9    9 |     338    -915   2385   4338
        |                    -29   -12                       |
sio  253|   -1     2     0     0   184   -13   .01   20   17 |     ---     ---    ---    ---
        |                    -40   -98                       |

Table 2.1635.5   GPS week: 1635   Day: 5   MJD: 55694.000                            

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  250|    0     0     2    12   -36    12  -.25    9    9 |    -461      17     18     92
        |                     11    20                       |
emr  107|    0     3    -2   -20    14     2   .27   19   19 |    1197     239     16    117
        |                    -28   -66                       |
esa  133|    0     0     3   -41     4    42   .26    9    8 |     -10    -514     12    102
        |                     24    37                       |
gfz  191|   -1    -1    -2    11  -175     0  -.13   13   13 |     -44     308     22    144
        |                     29    98                       |
grg  130|    1     0     4   -52   -42     0   .59   14   13 |     -37     320     41    212
        |                     60   -42                       |
igr  n/a|    0     0    -4     0    -4     0  -.01    5    5 |    3240     285     18     91
        |                     18    47                       |
jpl  124|    0     4    -5   -15    81   -16   .40   20   19 |    2078     137     18    302
        |                      3    26                       |
mit  272|    1    -1     0   -15   -31   -16  -.39   12   11 |    1166   -3388     20    137
        |                      2   -11                       |
ngs  227|    0     0    -4    95    92   -52  -.23   10    9 |   -1600    3315   2726   3847
        |                    -36  -114                       |
sio  253|    0     3     0   -13   145   -15  -.01   19   17 |     ---     ---    ---    ---
        |                    -34   -85                       |

Table 2.1635.6   GPS week: 1635   Day: 6   MJD: 55695.000                            

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  250|    1     0     2     2   -28    -2  -.23    9    8 |    -700    -244     16     98
        |                     16    15                       |
emr  107|   -1     0    -1   -31    15   -10   .25   18   18 |    1592   -2403     13    136
        |                     -4   -66                       |
esa  133|   -1     1     0   -20    17    57   .23    7    7 |    -336   -1597     14    113
        |                     29     7                       |
gfz  191|    0    -1    -1   -66  -247   -23  -.19   14   13 |     319    -750     23    164
        |                     10    93                       |
grg  130|    0     0     8    23   -32   -17   .63   15   15 |      -5    -630     50    227
        |                    -64   -77                       |
igr  n/a|    0     0    -5   -30    -3    -9  -.01    5    5 |    3662   -2244     21     96
        |                     24     8                       |
jpl  124|    0     2    -5   -55    93     0   .36   19   18 |    2274   -2242     18    298
        |                    110    68                       |
mit  272|    1    -1     0     0   -54    -5  -.38   12   12 |   -6228    6609     19    169
        |                     10     5                       |
ngs  227|    0    -1    -1    97   124   -52  -.25   10    9 |    -393    -434   2687   3492
        |                    -33  -133                       |
sio  253|    0     3     0   -11   121   -22  -.03   20   17 |     ---     ---    ---    ---
        |                    -27   -71                       |

       
       
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 3.1635.0   GPS week: 1635   Day: 0   MJD: 55689.000                            

        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
------+--------------------------------------------------------+---------------------------------------------------------
   2  |    9   20    8   11   20    4   26   15   10   19    5 |    33   36   29   32   24   31   36   29   34   32    29
   3  |    6   10    7    5   13    3    9    8   10   14    3 |    17   21   19   18   23   16   17   17   16   15    17
   4  |    8   14    7    8   21    3   12    9   10    9    3 |    19   25   22   23   18   19   20   25   24   27    20
   5E |    9   20    7    9   20    3   22   10   16   14    4 |    17   28   19   23   24   18   22   20   36   22    19
   6  |    6    9    7    6   11    3    9    7    8   18    3 |    24   24   26   23   28   23   23   24   22   21    24
   7  |    5   15    8    8   23    3   12    9    7   15    3 |    20   27   21   19   34   20   26   20   25   25    20
   8E |   16   23   11   12   18    9   17   16   12   22    5 |    21   34   23   21   30   19   31   16   21   31    19
   9  |    8   21    8   10   11    3   21    7   11   22    4 |    16   28   21   23   22   18   24   20   22   20    18
  11  |    8   15    8    7   16    6   18   10    8   11    3 |    23   27   25   24   30   21   26   28   24   25    23
  12  |    7   23    8   11   19    4   26    9    8   19    4 |    14   28   15   15   23   13   27   18   17   18    14
  13  |    6   17    7    9   22    7   22    8   10   20    4 |    18   32   23   18   34   20   31   22   22   19    20
  14  |    7   22   11   12   15    4   25    9    7   18    4 |    19   28   28   28   32   23   28   25   22   22    21
  15  |    7   23   10   10   22    8   25    7   10   27    5 |    17   26   21   22   26   16   24   18   22   20    16
  16  |    6   23    6    9   16    5   25    9    9   19    4 |    16   31   18   17   23   17   29   15   19   13    16
  17  |   11   12    7    9   12    6   14   11   14   28    4 |    55   61   56   59   60   59   54   61   58   60    57
  18E |   10   19    8   11   25    4   25    8    8   14    4 |    19   28   29   27   23   21   29   22   24   25    22
  19  |    6   11    8    8   13    4   13    6   11   23    3 |    24   24   24   23   25   22   27   22   24   20    22
  20E |    8   17    6    9   17    6   19   14   10   12    4 |    15   23   14   12   20   15   22   19   17   15    14
  21  |    6   21    7    9   17    6   23    7    7   22    4 |    20   30   20   18   20   21   31   23   29   20    19
  22E |   10   19   11    8   17    4   26   10    6   12    4 |    14   28   28   20   22   19   28   20   18   25    19
  23  |    6   18    7   10   21    5   22    6   11   33    4 |    14   28   19   19   27   17   28   19   15   30    16
  24  |    7   12    7    6   12    6   10   11    7   13    3 |    18   25   19   16   21   18   23   25   21   23    18
  25  |    7   17    8    9   16    5   21    9    8   13    4 |    12   27   19   15   28   16   37   15   17   21    15
  26  |    5   12    8    8   15    6   12    7   13   11    3 |    20   24   21   19   25   21   21   22   28   27    20
 X27  |    9   20    5    9   15    4  ---    7   13   21    4 |    17   28   20   23   24   20  ---   21   25   23    19
  28  |    7   21   11   10   20    8   19    9   12   17    4 |    20   32   27   23   32   26   29   23   27   23    22
  29  |    7   12    6   14   19    6   19   13   11   36    5 |    17   22   22   26   23   21   17   22   25   34    19
  30  |    6   12    5   11   12    3   15   10    9   26    3 |    20   26   21   17   23   21   11   19   19   17    19
  31  |    6   24    8   13   23    4   21   10   13   13    4 |    18   32   19   12   35   18   27   20   23   16    17
  32E |   11   18    7   10   17    7   18    6    8   18    4 |   126  128  125  126  127  123  131  125  122  128   126
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |    8   18    8   10   18    5   20   10   10   20      |T   23   32   26   25   30   24   30   25   27   27    24
 WRMS |    7   18    8    9   16    5   18    9    8   21      |NE  20   28   23   22   27   21   26   23   24   23    20
 MEDI |    7   18    7    9   17    4   19    9   10   18      |MD  18   28   21   21   24   20   27   21   22   22    19

Table 3.1635.1   GPS week: 1635   Day: 1   MJD: 55690.000                            

        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
------+--------------------------------------------------------+---------------------------------------------------------
   2  |    7   18    9    7   16    5   26   14   16   22    4 |    30   30   23   27   19   25   35   27   31   25    24
   3  |    6   10    7    6   12    5   11    8    7   18    3 |    14   24   21   17   20   17   19   16   23   16    17
   4  |    9   11    6    7   10    6   13   10   12   16    3 |    16   22   20   14   18   16   20   20   21   21    17
   5E |    9   17    7   13   21    7   24   20   14   13    5 |    20   28   23   20   24   20   28   21   19   22    19
   6  |    5   12    6    6   10    5   12   10    8   20    3 |    23   30   29   24   26   25   26   25   30   24    25
   7  |    7   14    9    7   18    5   16   10   13   15    4 |    24   31   26   21   34   23   29   23   30   26    25
   8  |   12   26    8    8   14    7   22   14   15   17    5 |    22   39   27   24   29   24   34   23   31   29    24
   9  |    7   18    5    8    9    7   20   12    8   22    4 |    19   28   16   17   22   17   29   18   21   18    17
  11  |    5   15    6    8   15    6   15   11   13   13    3 |    16   21   15   17   19   15   20   21   21   17    14
  12  |    7   21    8    9   15    7   29   10    8   23    4 |    16   30   18   17   23   15   30   20   19   18    17
  13  |    5   17    8    9   20    6   22    8   11   21    4 |    19   30   25   18   33   20   33   23   24   21    21
  14  |    7   22    7   12   13    5   27    7   10   20    4 |    19   34   30   31   31   27   31   21   27   21    24
  15  |    5   25    9    8   16    6   28   10   10   28    4 |    14   28   16   16   21   15   28   18   20   21    14
  16  |    5   24    6    8   18    4   27    9    9   23    4 |    15   31   19   19   28   18   31   14   21   17    18
  17  |    9   13    8   11    9    6   15   13   14   32    4 |    45   46   48   42   47   45   46   46   46   44    44
  18E |    9   20    9   12   24    4   26   10   14   13    5 |    21   29   29   27   28   22   26   23   27   25    23
  19  |    4   13    7    6   12    4   15    7    8   22    3 |    21   28   26   22   24   25   30   25   29   25    23
  20E |    6   20    6    6   15    7   22   14   13   15    4 |    12   25   16    9   19   12   23   16   21   13    13
  21  |    7   26    8    9   17    6   28   10   10   22    4 |    15   31   15   16   19   15   30   17   21   14    14
  22E |    8   19    6    7   19    4   28   11    8   13    4 |    17   28   26   22   25   21   26   19   24   25    20
  23  |    6   18    8    9   18    7   24    9    9   35    4 |    20   31   25   18   27   21   31   25   26   35    22
  24  |    6   14    7    7   10    9   10   13   13   16    3 |    14   20   14   16   15   14   17   19   19   15    13
  25  |    7   14    7    8   17    6   21    9    9   16    3 |    14   28   18   12   31   16   37   15   22   21    17
  26  |    7   14    8    7   11    5   16    6   15   13    3 |    15   26   20   15   19   18   24   19   25   22    17
  27  |    8   20    5    8   10    7   19   11   10   21    4 |    17   27   15   16   21   16   26   18   21   19    16
  28  |    8   17    9    6   19    7   19   12   10   21    4 |    18   29   21   14   34   16   28   12   23   13    17
  29  |    7   14    4   12   16    7   19   15   11   37    4 |    16   25   22   22   17   20   22   16   25   30    20
  30  |    7   13    6    5    8    3   15    8    6   24    3 |    21   26   23   21   24   22   17   21   23   21    22
  31  |    7   27    7   12   16    6   23    9    8   19    4 |    16   36   22   23   31   20   29   17   22   15    20
  32E |   11   19    9   11   20   10   17   16   15   39    5 |   117  114  111  114  117  115  109  115  119  112   114
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |    7   18    7    9   16    6   21   11   11   22      |T   22   31   25   23   28   23   30   23   27   24    23
 WRMS |    7   18    7    8   14    6   20   10    8   26      |NE  19   28   21   19   25   20   27   20   24   21    19
 MEDI |    7   17    7    8   15    6   20   10   10   20      |MD  17   28   22   18   24   20   28   20   23   21    19

Table 3.1635.2   GPS week: 1635   Day: 2   MJD: 55691.000                            

        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
------+--------------------------------------------------------+---------------------------------------------------------
   2  |    7   19    9   16   14    4   22    8   11   19    4 |    24   29   17   25   15   20   27   23   21   22    19
   3  |    5   11    7    7   11    3   10    8    7   17    3 |    11   20   18   16   20   16   16   14   15   15    14
   4  |   12   10    5    8   11    6    9   14   12   19    4 |    12   20   19   18   19   15   20   22   16   26    15
   5E |    6   20    9   11   11    4   26    9    7   12    4 |    20   30   23   24   26   20   26   22   21   22    21
   6  |    5   11    8    9    8    4   11    8    7   18    3 |    16   23   24   20   24   19   20   18   17   19    18
   7  |    7   14    6    8   16    5   14    5   10   13    3 |    19   26   22   22   30   20   26   21   23   23    20
   8  |   10   25    8    8   11    7   18    8    9   17    4 |    13   31   21   19   22   15   28   18   16   26    17
   9  |    9   18    9   14   18    6   20   10   11   16    4 |    12   24   16   21   17   13   23   18   16   19    13
 X10E |    4  ---  ---  ---  ---  163  ---  ---  ---  ---    0 |    35  ---  ---  ---  ---  115  ---  ---  ---  ---    32
  11  |    8   16    7    5   13    6   15    7   12    9    3 |    17   23   18   19   24   17   19   19   19   18    16
  12  |    8   22    8    9   16    6   25   12   14   20    4 |    12   26   15   12   21   10   26   20   15   18    12
  13  |    6   19    9   10   20    5   20    7    8   18    4 |    14   29   21   17   32   16   30   20   17   20    16
  14  |    7   20    9   12   12    5   25    9    8   17    4 |    16   28   28   27   29   23   30   24   21   22    21
  15  |    7   23    9   16   17    5   25   11   10   25    5 |    15   27   17   21   22   12   24   21   13   23    13
  16  |    6   19    9    9   15    3   24   10    9   24    4 |    13   26   19   14   24   14   28   14   16   17    14
  17  |   11   13   12   13    8    6   13   12   14   29    4 |    45   48   51   47   49   47   47   48   48   46    47
  18E |    7   20    5   13   13    5   24    9    7   13    4 |    11   24   18   16   18   15   24   18   15   20    13
  19  |    8   14    6    6   12    4   14    6    9   22    3 |    16   23   22   21   20   17   22   18   21   21    18
  20E |    6   15    9    9   12    6   22   10    9   13    3 |    10   21   13   11   14   12   19   17   17   15    10
  21  |    7   23    6   12   13    4   23    9   11   18    4 |    15   31   14   17   19   16   28   20   20   17    15
  22E |    7   17    6   10   20    4   28   11    7   10    4 |    13   27   21   17   21   17   27   18   18   23    16
  23  |    7   20   10   11   15    5   21   12    9   32    5 |    14   29   18   14   22   15   26   21   17   32    14
 X24  |    7   13    7    6   10    7  ---    8   12   13    3 |    12   19   14   14   15   13  ---   16   18   14    12
  25  |    7   18    6    7   14    5   21   11   11   14    4 |    12   27   18   14   29   16   37   17   17   22    15
  26  |    6   11    8    9   12    4   13    8   11   11    3 |    14   19   19   14   17   17   19   19   24   20    15
  27  |    9   19    9   15   15    6   19    8   14   15    4 |    12   24   18   22   18   14   21   20   15   21    13
  28  |    7   20    9    7   17    7   20   10    8   17    4 |    14   31   20   17   33   16   30   15   17   16    16
  29  |    6   11    5   10   13    4   16   13   10   37    4 |    11   17   21   19   17   17   18   19   18   30    16
  30  |    7   14    6    8    8    5   12    7    7   20    3 |    15   24   19   15   20   15   16   17   13   21    15
  31  |    6   28    7   12   17    4   19    6    9   12    4 |    16   36   22   15   33   18   27   17   17   17    17
  32E |   13   23   10   10   11    7   18   12   11   40    5 |    69   69   61   66   61   66   61   69   70   54    64
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |    8   18    8   11   14    5   20   10   10   20      |T   17   27   21   20   24   21   26   21   20   22    18
 WRMS |    8   18    8   10   13    5   17   10    9   19      |NE  15   26   20   19   23   17   25   20   18   21    16
 MEDI |    7   18    8    9   13    5   20    9    9   17      |MD  14   26   19   17   21   16   26   19   17   21    16

Table 3.1635.3   GPS week: 1635   Day: 3   MJD: 55692.000                            

        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
------+--------------------------------------------------------+---------------------------------------------------------
   2  |    7   19    9    9   12    3   24    7   11   20    4 |    26   28   17   24   16   23   28   24   24   24    20
   3  |    5   11    6   12   10    4   10    8   11   15    3 |    11   18   15   13   21   11   14   14   16   14    12
   4  |    9   14    5    8   12    4   10   10    9   18    3 |    12   19   18   16   19   14   17   18   14   23    14
   5E |    5   22   11    9   17    3   26   14    7   10    4 |    13   26   23   17   20   17   23   19   17   23    17
   6  |    5    8    6   12   10    3    9   11   12   15    3 |    17   21   21   17   25   17   19   21   19   18    18
   7  |    6   16    6   10   17    4   14    9    8   11    3 |    22   30   22   21   33   21   25   25   23   25    22
   8  |    8   23    7   12   12    3   19   11    8   16    4 |    15   30   15   20   22   16   28   19   16   25    16
   9  |    7   18    6    8   11    4   18   11    9   18    3 |    16   26   18   19   14   15   23   21   15   20    16
  10E |    9   27    5   13   14    6   11   11    9   19    4 |    33   34   26   30   21   54   22   35   32   34    29
  11  |    7   17    5   11   15    7   17    7   11   14    3 |    20   23   18   20   25   16   22   21   19   22    18
  12  |    7   26    8   12   19    4   26   13   13   23    5 |    14   32   15   16   22   11   27   21   13   16    13
  13  |    6   18    7   10   17    5   19   12    8   17    4 |    16   29   20   19   32   17   27   23   17   20    18
  14  |    7   20    8   12   12    3   23   12    9   17    4 |    16   31   23   24   32   21   27   25   18   23    21
  15  |    5   22    8   11   16    4   23   15    7   32    5 |    14   27   14   16   21   13   23   20   14   24    13
  16  |    6   22    8   11   14    3   24   10   11   23    4 |    11   29   19   15   23   14   26   16   17   16    14
  17  |    8   14    6   14   10    6   13   11    7   29    4 |    61   63   63   67   67   66   63   66   59   65    63
  18E |    7   20    7    9   17    5   25   12    6   14    4 |    20   27   26   23   26   20   25   22   21   25    21
  19  |    8   11    6   11   13    5   13    7   10   22    3 |    20   21   20   20   22   20   23   20   23   20    18
  20E |    5   17    8   10   14    6   21    9   13   10    4 |    11   22   12   14   16   11   18   18   15   16    12
  21  |    7   24    7   11   12    3   24   10    9   19    4 |    17   31   17   18   19   16   28   22   20   21    17
  22E |    6   17    7   10   18    3   28   12    6   10    4 |    18   29   22   19   25   20   27   22   22   26    20
  23  |    6   19   13   13   14    5   21   15   11   32    5 |    18   29   21   19   25   16   25   24   17   33    17
  24  |    7   12    5   12   13    6   10    9   13   17    3 |    20   23   17   21   21   18   13   21   22   21    19
  25  |    7   14    5   11   13    3   19   12   11   13    3 |    12   26   19   15   30   15   35   16   14   19    16
  26  |    4   12    6    7   13    3   11    8    9    8    3 |    17   22   19   13   16   16   19   18   21   19    16
  27  |    6   19    6   10   12    4   16   10    9   21    4 |    15   25   17   19   15   13   18   22   15   24    15
  28  |    4   16    5   14   17    6   22    9    7   18    4 |    15   26   19   21   32   15   26   16   16   15    16
  29  |    7   12    7   11   15    5   17   12    8   38    4 |    14   20   19   21   18   16   16   21   18   29    17
 X30  |    5   17    6   12    8    5  ---    8   10   23    4 |    18   28   16   14   22   16  ---   18   10   24    16
  31  |    6   25    7   14   19    3   20    8   10   10    4 |    15   33   21   17   34   16   27   18   18   17    17
  32E |   12   24   12   13   16    9   17   14   12   47    6 |   120  121  115  117  117  114  111  118  117  120   116
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |    7   18    7   11   14    5   19   11   10   21      |T   21   30   23   23   27   22   27   25   22   26    21
 WRMS |    6   18    7   11   14    5   17   11    8   19      |NE  18   27   20   20   25   18   24   22   19   23    18
 MEDI |    7   18    7   11   14    4   19   11    9   18      |MD  16   27   19   19   22   16   25   21   18   23    17

Table 3.1635.4   GPS week: 1635   Day: 4   MJD: 55693.000                            

        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
------+--------------------------------------------------------+---------------------------------------------------------
   2  |    6   19    8   12   12    5   23    8    8   17    4 |    23   26   16   22   14   20   27   23   21   22    19
   3  |    7   12    6   13   11    4   10    9    7   20    3 |    12   24   16   20   20   13   15   17   15   17    15
   4  |    7    9    5   10    7    5   12   10   12   14    3 |    11   18   13   10   17   10   14   14   13   16    10
   5E |    6   19    9   13   16    4   21   12   10    8    4 |    14   22   20   14   19   14   21   16   12   14    13
   6  |    6   11    4   12   10    3   10    9    8   17    3 |    16   24   20   18   22   15   17   19   15   18    17
   7  |    7   14    6   15   16    4   17   11   10   11    4 |    13   22   20   18   31   15   24   22   16   20    17
   8  |    7   24    5   10    9    3   16   10    9   16    3 |    13   32   17   16   20   14   28   17   12   24    15
   9  |    7   21    8   13   11    7   19   11    6   17    4 |    15   27   17   20   16   15   24   18   15   21    15
  10E |   11   16    7   17   14    5   12   11   12   16    4 |    30   27   22   27   22   35   23   30   26   24    28
  11  |    8   15    7   10   13    5   16    9   14   11    4 |    19   25   17   21   26   16   19   22   21   23    18
  12  |    8   23    8   12   18    5   22   11    7   20    4 |    13   27   13   17   22   10   23   20   14   16    13
  13  |    7   18   10   17   18    4   20   13   11   16    4 |    14   26   23   21   30   16   26   23   15   18    17
  14  |    7   17    8   15   11    4   23   11    8   17    4 |    16   28   27   25   31   19   27   24   21   21    21
  15  |    5   19    8    9   12    4   23   15   10   29    4 |    12   25   13   18   21   14   23   21   13   23    13
  16  |    5   19    6   15   15    4   22   11   10   26    4 |    10   25   15   15   24   10   23   13   14   15    11
  17  |    9   12   10   12   11    4   13   12   12   29    4 |   103  106  107  102  109  104  106  101  107   99   104
  18E |    8   16    7   15   11    2   23   12    8   14    4 |    13   23   22   25   20   18   23   21   15   23    16
  19  |    7   12    5    9   12    4   14    7   10   23    3 |    17   23   18   17   19   15   19   17   19   18    16
  20E |    5   16    8   14   13    6   21   11   11   13    4 |    11   21   13   17   19   12   20   16   15   18    12
  21  |    5   21    7   15   13    3   24    9    5   20    4 |    15   28   15   18   20   15   28   18   15   17    13
  22E |    7   18    5   13   15    3   24   10    9    9    4 |    14   30   24   24   24   19   24   18   19   23    19
  23  |    7   19    8   17   13    6   22   13    9   32    5 |    11   27   16   16   21   12   24   19   13   30    12
  24  |    5   13    7   12   14    5   13   11   14   14    3 |    17   21   16   17   19   14   16   18   20   24    16
  25  |    6   13    5   10   15    4   22    9    7   15    3 |    14   26   19   18   31   15   36   17   16   18    17
  26  |    6   10    7   11   13    4   13    8    9   10    3 |    15   21   18   16   18   16   21   20   16   18    15
  27  |    7   19    9   11   12    5   17   10    9   21    4 |    16   25   15   17   18   13   21   18   17   23    15
  28  |    8   14   10   11   16    7   22    8    7   17    4 |    13   26   20   14   32   15   26   17   18   14    16
  29  |    8   17    7   12   16    5   15   10    8   37    4 |    16   25   24   19   17   18   20   23   20   31    19
 X30  |    4   17    6   15    8    4  ---    8   10   24    4 |    17   28   19   17   24   16  ---   18   13   27    17
  31  |    5   24    5   16   16    4   19    8    7   10    4 |    14   30   20   12   34   14   26   18   16   16    17
  32E |   12   25    8   13   15    6   18   13    9   36    5 |    68   75   71   76   75   72   69   71   73   82    71
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |    7   17    7   13   13    5   19   11    9   20      |T   19   29   22   22   26   20   27   23   21   24    20
 WRMS |    7   17    7   12   13    5   17   11    9   17      |NE  18   28   21   21   26   18   26   22   20   23    19
 MEDI |    7   17    7   13   13    4   19   10    9   17      |MD  14   26   18   18   21   15   23   18   16   21    16

Table 3.1635.5   GPS week: 1635   Day: 5   MJD: 55694.000                            

        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
------+--------------------------------------------------------+---------------------------------------------------------
   2  |    8   23   14   14   10    5   23   11    8   19    4 |    20   28   16   21   15   18   28   22   20   23    17
   3  |    9   14    8   12   11    4   12    8   12   17    4 |    10   17   17   12   15   12   16   13   12   16    12
   4  |    9   14    9   12    8    3   12    9   10   13    3 |    12   15   19   12   19   11   16   13   14   16    12
   5E |    6   21    6   11   15    3   24   16    8    9    4 |    11   23   14   13   18   10   22   14   13   16    10
   6  |    8   11    8   13   10    5   12   10   12   15    3 |    14   21   22   15   19   16   21   17   17   18    16
   7  |   11   17   10   12   20    5   17   17    9   10    4 |    19   23   17   19   32   17   25   26   17   18    18
   8  |   10   22    6   10   13    4   16    9   10   15    4 |    11   27   16   14   22   13   26   16   17   21    14
   9  |    9   22    9   13    7    4   22   13   13   17    4 |    15   25   16   17   14   13   24   16   18   20    14
  10E |   14   14    7   12   13    7   13   12   11   14    4 |    33   25   24   25   18   30   23   27   26   23    29
  11  |    8   15    9    9   12    6   18   10   12   12    4 |    18   17   18   17   18   12   19   21   15   17    14
  12  |   10   25    8   12   16    4   25   12   10   18    5 |    12   26   13   13   21   12   25   16   14   15    11
  13  |    8   17   13   18   20    8   23   14   10   17    5 |    14   26   25   20   35   18   29   24   13   17    17
  14  |    9   20    7   13   10    5   22   10   10   19    4 |    12   29   22   21   30   19   29   18   19   16    18
  15  |    7   20   10   12   14    5   23   11   10   27    5 |    12   24   14   15   20   14   24   17   17   20    12
  16  |    7   21    7   14   12    5   24   10   10   25    4 |     9   26   14   12   22   14   27   16   14   19    12
  17  |    9   17   14   15   11    5   15   15   13   29    5 |   130  134  133  135  134  131  129  134  137  124   132
  18E |    9   18    8   11   11    4   24   10   10   11    4 |    18   26   22   19   22   20   27   22   21   23    19
  19  |    9   13    6   10   12    5   18    8   12   23    4 |    14   18   18   14   15   15   22   14   13   16    13
  20E |    7   22    8   16   14    6   24   12   10   12    4 |    12   25   16   16   22   14   22   17   15   18    13
  21  |    8   22   10   12   13    3   22   14    6   21    4 |    15   24   14   14   16   15   24   23   16   22    13
  22E |   10   15    7   13   20    3   25    8    9    9    4 |    16   26   23   18   26   19   28   19   21   25    19
  23  |    9   19   11   17   15    7   24   13   12   32    5 |    17   27   18   18   25   16   26   19   14   31    14
  24  |    6   15    6   10   11    6   12   10   11   12    3 |    19   21   17   20   17   17   16   22   18   16    17
  25  |   12   15    5   14   16    6   19   14   12   13    4 |    15   26   21   19   31   20   38   20   22   23    19
  26  |    5   13    6   11   12    4   13   10   10   10    3 |    10   17   14   12   16   12   19   15   15   13    11
  27  |   10   21    9   11   12    4   21   15   12   24    5 |    13   23   16   16   16   12   22   17   16   21    12
  28  |    8   22    7   13   17    5   20    7   10   17    4 |    13   27   19   17   31   16   26   16   19   14    15
  29  |    9   18    7   11   14    5   16   14    8   37    5 |    14   23   21   19   18   17   17   23   14   29    16
 X30  |    7   19    8   17    7    5  ---    8    7  ---    4 |    15   25   20   19   20   17  ---   17   12  ---    16
  31  |    5   20    8   14   17    4   22    8   10   13    4 |    11   26   16   12   33   13   26   15   14   12    14
  32E |   12   20    8   12   16    5   16   13   11   21    4 |   117  117  114  114  113  116  114  118  118  111   115
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |    9   19    9   13   14    5   20   12   10   19      |T   21   30   24   23   28   22   30   25   23   25    22
 WRMS |    9   19    8   13   13    5   19   11    9   17      |NE  18   27   22   21   26   19   28   23   20   23    19
 MEDI |    9   19    8   12   13    5   20   11   10   17      |MD  14   25   18   17   20   16   24   17   16   18    14

Table 3.1635.6   GPS week: 1635   Day: 6   MJD: 55695.000                            

        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
------+--------------------------------------------------------+---------------------------------------------------------
   2  |    8   19    7   14   14    6   23   13   10   17    4 |    24   29   20   25   21   23   32   23   23   26    21
   3  |    8   13    6   14   14    5   11    8    8   20    3 |    17   24   20   24   28   18   18   17   18   17    18
   4  |    9   11    4   12   12    3   11   12   12   10    3 |    14   17   19   17   22   13   21   17   16   18    14
   5E |    5   21    8   12   13    7   24   20    8   13    4 |    17   30   19   20   24   15   24   21   18   18    17
   6  |    7   11    7   12   13    5   13    7    9   16    3 |    24   29   27   29   36   23   23   24   24   23    25
   7  |   10   16    8   16   17    4   16   18    8   11    4 |    20   25   21   25   30   19   30   23   20   22    19
   8  |   12   20    5   14   15    4   15   10    9   16    4 |    16   30   21   22   23   20   30   20   20   24    19
   9  |    9   24    6   11   13    3   21   14   12   17    4 |    15   28   19   21   21   17   25   24   15   21    17
  10E |   15   17    5   12   15    7   13   15   16   16    4 |    37   29   26   32   21   41   26   40   35   23    32
  11  |   10   17    6   12   12    4   18   12   14   17    4 |    25   28   23   27   29   22   25   26   23   24    23
  12  |    8   23    6   11   16    3   25   12   10   17    4 |    13   26   17   16   21   15   29   19   17   17    15
  13  |    9   18    9   27   19    5   21   13   11   21    5 |    19   32   27   40   34   24   30   28   26   21    23
  14  |    6   23    6   14   13    6   24   11   10   17    4 |    20   32   29   33   34   27   31   26   26   21    24
  15  |    7   22   10   10   18    5   24   11    9   19    4 |    18   28   25   26   24   20   28   18   21   17    19
  16  |    8   17    7   15   14    4   24   11   11   29    5 |    12   24   17   17   27   16   28   17   21   21    15
  17  |   11   16    9   16   10    5   13   14   12   26    4 |   107  105  107  104  111  107  106  109  108  105   107
  18E |    9   18    7   12   13    5   25    9   10   13    4 |    22   28   28   24   28   25   29   29   27   29    24
  19  |    8   13    6   11   14    5   14    9    9   25    4 |    23   26   24   28   28   23   25   22   20   21    22
  20E |    6   21    7   14   16    8   25   16   11   10    4 |    14   24   18   22   20   17   23   24   18   20    16
  21  |    8   18    9   12   13    4   21    8    9   23    4 |    21   29   22   16   19   22   32   26   27   28    21
  22E |    6   16    7   12   14    3   27    7    7   10    4 |    16   26   25   22   24   22   28   21   21   26    20
  23  |    8   19    9   14   16    6   22   12   12   34    5 |    16   28   23   26   23   19   28   23   18   36    17
  24  |    8   13    5   12   10    5   13   12   13   15    3 |    20   23   20   23   21   22   20   25   26   21    21
  25  |    8   14    6   13   13    5   19   11   10   10    3 |    13   25   21   17   31   17   39   18   15   21    17
  26  |    7   12    8   10   13    6   12   16    9   14    3 |    19   22   24   20   25   21   25   26   23   22    21
  27  |    9   21    7   12   16    4   19   14   12   20    4 |    15   25   19   20   18   17   21   22   14   22    15
  28  |    9   17    8   18   20    8   19   10   10   16    4 |    16   28   18   24   34   18   27   19   19   17    17
  29  |    7   13    5   12   15    5   15   13   11   37    4 |    26   26   29   24   29   27   29   32   27   36    27
 X30  |   15   22   16   16   23   12  ---   13  ---  ---    7 |    23   30   24   26   32   23  ---   22  ---  ---    20
  31  |    7   22    4   15   17    6   19   11    8   12    4 |    18   32   22   17   35   19   32   20   19   17    20
  32E |   12   19    8   13   15    7   19   14   10   29    5 |   140  137  135  139  132  135  129  144  139  143   137
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |    9   18    7   14   15    5   19   12   10   20      |T   25   33   28   29   32   27   33   29   28   29    26
 WRMS |    8   18    7   13   15    5   18   12    9   17      |NE  22   30   25   26   30   23   30   26   24   25    23
 MEDI |    8   18    7   12   14    5   19   12   10   17      |MD  19   28   22   24   27   21   28   23   21   21    20



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 4.1635   GPS week: 1635   MJD: 55689.0-55695.0

CENT| CLK EPO  |        BRUS       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 2947 |U    9     9    23 |U    9    10    24 |U   14     9    20 |
emr | emr 2928 |U   11    11    27 |U   10    16    35 |    14     9    24 |
esa | esa 2934 |     9     8    24 |U    5     8    20 |    13     8    21 |
gfz | gfz 2927 |U   10    10    27 |U   16    19    48 |U   14     9    23 |
grg | grg 2604 |     8     9    30 |U    6     8    23 |    14     9    20 |
igr | igr 2912 |     9     9    25 |     7     8    29 |    13     9    22 |
igs | igs 2919 |     9     8    24 |     5     7    19 |    13     8    20 |
jpl | jpl 2843 |U   11     9    29 |U    9    15    40 |    14     9    26 |
mit | mit 2934 |U   11    15    32 |U   19     9    38 |U   31    23    44 |



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 5.1635.0   GPS week: 1635   Day: 0   MJD: 55689.0

CENT| CLK EPO  |        BRUS       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 2880 |     8     8    20 |     7     7    19 |     8     9    12 |
emr | emr 2878 |     8    13    22 |    14    16    71 |     9    11    17 |
esa | esa 2880 |     7    10    19 |     8    11    24 |     8     8    14 |
gfz | gfz 2871 |     8     9    20 |     6     9    26 |     7     8    12 |
grg | grg  570 |     2     9    47 |    10     9    32 |     6    12    13 |
igr | igr 2869 |     7    10    20 |    14    13    81 |     8     8    12 |
igs | igs 2879 |     7     8    19 |     7     8    22 |     8     8    12 |
jpl | jpl 2782 |     8    10    18 |    13    14    70 |     9     8    13 |
mit | mit 2880 |     8    10    23 |     9    13    30 |    20    18    42 |

Table 5.1635.1   GPS week: 1635   Day: 1   MJD: 55690.0

CENT| CLK EPO  |        BRUS       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 2880 |    10    10    28 |    10    14    30 |     6     5    15 |
emr | emr 2876 |    10    10    28 |    11    14    49 |     7     6    21 |
esa | esa 2880 |     9    10    28 |     9    14    34 |     6     4    19 |
gfz | gfz 2876 |    10    10    28 |    21    18    48 |     5     3    16 |
grg | grg 2880 |    10    10    25 |    10    13    40 |     7     4    18 |
igr | igr 2879 |     9     9    27 |    10    11    33 |     6     4    18 |
igs | igs 2880 |     9    10    27 |     9    13    30 |     6     4    17 |
jpl | jpl 2875 |     9    10    23 |    12    14    46 |     8     7    23 |
mit | mit 2880 |     9    10    26 |    10    14    29 |     6     5    20 |

Table 5.1635.2   GPS week: 1635   Day: 2   MJD: 55691.0

CENT| CLK EPO  |        BRUS       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 2969 |    14     9    26 |     5     7    20 |     6     5    15 |
emr | emr 2876 |    17    11    32 |     6     8    23 |     7    10    22 |
esa | esa 2880 |    13     7    28 |     4     7    22 |     7     7    19 |
gfz | gfz 2876 |    13     7    27 |    15    15    56 |     6     6    19 |
grg | grg 2880 |    13     7    30 |     5     8    18 |     8     9    24 |
igr | igr 2913 |    13    10    27 |     4     7    19 |     7    11    25 |
igs | igs 2874 |    13     7    27 |     4     7    19 |     7     8    18 |
jpl | jpl 2770 |    12     6    29 |     5     7    26 |     8    10    25 |
mit | mit 2880 |    27    53    79 |    93    16   138 |   106    87   144 |

Table 5.1635.3   GPS week: 1635   Day: 3   MJD: 55692.0

CENT| CLK EPO  |        BRUS       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 2976 |     8    11    27 |     6     5    13 |    52    14    39 |
emr | emr 2968 |    11    10    34 |     8    17    20 |    50    15    45 |
esa | esa 2976 |     9    10    29 |     5     6    12 |    44    18    38 |
gfz | gfz 2969 |     9    10    31 |    19    22    46 |    47    12    43 |
grg | grg 2976 |     9    12    34 |     6     5    17 |    52    15    23 |
igr | igr 2950 |     9    10    30 |     5     6    15 |    50    15    41 |
igs | igs 2975 |     9    10    30 |     5     6    13 |    50    16    40 |
jpl | jpl 2869 |    11     9    37 |     6    14    27 |    45    17    52 |
mit | mit 2976 |     8    10    29 |     6     5    19 |    60    20    44 |

Table 5.1635.4   GPS week: 1635   Day: 4   MJD: 55693.0

CENT| CLK EPO  |        BRUS       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 2976 |    11    14    19 |    23    20    42 |    13    13    21 |
emr | emr 2968 |    10    10    26 |    12    23    25 |    13    11    25 |
esa | esa 2976 |     9    11    25 |     4     7    14 |    10     9    20 |
gfz | gfz 2967 |    10    13    25 |    19    26    45 |    11    12    20 |
grg | grg 2976 |    10    12    27 |     5     8    14 |    10     9    19 |
igr | igr 2959 |     9    11    26 |     5     7    19 |    11     9    19 |
igs | igs 2975 |     9    12    25 |     4     5    12 |    11    10    18 |
jpl | jpl 2871 |    14    15    43 |    10    16    47 |     9     6    20 |
mit | mit 2976 |     8    12    25 |     6     6    15 |    10    13    21 |

Table 5.1635.5   GPS week: 1635   Day: 5   MJD: 55694.0

CENT| CLK EPO  |        BRUS       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 2976 |     7     6    18 |     7    11    27 |     6     6    17 |
emr | emr 2968 |     9    10    23 |     9    18    32 |     6     5    17 |
esa | esa 2976 |     7     5    17 |     4     8    18 |     7     4    15 |
gfz | gfz 2967 |    13     7    30 |    19    24    52 |    11    11    24 |
grg | grg 2976 |     7     6    20 |     4     6    18 |     8     5    18 |
igr | igr 2878 |     7     6    20 |     5     7    18 |     7     7    21 |
igs | igs 2976 |     7     5    17 |     5     7    19 |     6     5    15 |
jpl | jpl 2872 |     9     7    22 |     6    19    24 |    10     8    26 |
mit | mit 2976 |     7     6    20 |     5     6    14 |     6     6    15 |

Table 5.1635.6   GPS week: 1635   Day: 6   MJD: 55695.0

CENT| CLK EPO  |        BRUS       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 2976 |     9     8    21 |     4     4    19 |     8     9    22 |
emr | emr 2968 |    11    12    27 |     9    15    23 |     9     8    20 |
esa | esa 2974 |     8     6    22 |     3     5    16 |     7     9    23 |
gfz | gfz 2967 |     9    10    27 |    17    21    62 |     9    11    27 |
grg | grg 2976 |     7     6    24 |     4     5    21 |     7     9    24 |
igr | igr 2941 |     8     6    24 |     4     5    18 |     7     8    20 |
igs | igs 2880 |     8     6    22 |     3     4    18 |     7     8    21 |
jpl | jpl 2863 |    11     8    29 |    11    19    42 |     9     8    21 |
mit | mit 2976 |     8     6    23 |     6     5    20 |    12    17    24 |


Table 6: Earth Orientation Parameters weekly summary.                          
                                                                              
        Weekly mean and standard deviation of Centre ERP, ERP rates and       
        LOD differences with respect to IGS combined values. See Table 7 for  
        the daily summaries.                                                  
                                                                              
        Xpole,Xrt: x pole and x pole rate                          
        Ypole,Yrt: y pole and y pole rate                       
        LOD      : Length Of Day                                               
                                                                              
        AC LOD BIAS    : 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 6.1635   GPS week: 1635   MJD: 55689.500-55695.500

                                                         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 |     -29     -25     127     -93     11 |       0     21
            |      19      15      88     121      5 |       2
emr   uuuuu |      33      15      63      68    -13 |      35     42
            |      25      18      87     176      5 |       6
esa   uuuuu |     -29     -19       6       5      5 |       9     25
            |      18      10     102      52      3 |       2
gfz   uuuux |     -89      -3     206    -166      5 |       6     26
            |      23      21      88     147     31 |       6
grg   uuuux |      -2     -43     175    -108     11 |      -5     35
            |      33      55      99      82     41 |       3
igr   xxxxx |     -40     -13     109     -78      5 |       3     20
            |      14      24      88      57      5 |       2
irf   xxxxx |      -1       6      20     -60      2 |       4     22
            |      16       6      45      69      6 |       2
jpl   uuuuu |       1     -12      70     108    -10 |      11     28
            |      60      61     103      76     10 |       4
mit   uuuuu |      21       4    -185       6      3 |      14     26
            |      31      14      96      88      3 |       2
ngs   uuuuu |      38      31     -89      90      1 |       8     21
            |      49      43     152      80      5 |       2
sio   uuuuu |      92      40    -118     -11     11 |      38     45
            |      29      16     148     119      2 |       4


Table 7.1635.0   GPS week: 1635   Day: 0   MJD: 55689.500

                                                         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     -39     260      23      4 |      -2     21
emr   uuuuu |       9     -22      26     -27     -5 |      40     44
esa   uuuuu |       4       3     -99      81      7 |       7     24
gfz   uuuux |     -86       0      89     -10    -26 |      13     26
grg   uuuux |     -28     -98     314    -140    -82 |      -1     35
igr   xxxxx |     -41     -40      38     -55     -1 |       0     21
irf   xxxxx |      -2      -2      12    -127     -3 |       4     21
jpl   uuuuu |      14     -77    -125      77     -8 |      13     28
mit   uuuuu |      12     -21     -84     -96      2 |      12     25
ngs   uuuuu |      42     102     107     111     -5 |       9     22
sio   uuuuu |      84      17    -171    -128     12 |      31     39

Table 7.1635.1   GPS week: 1635   Day: 1   MJD: 55690.500

                                                         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 |     -39     -37      79      58      5 |       0     22
emr   uuuuu |      16      20     190    -115    -16 |      41     45
esa   uuuuu |     -18     -21    -105      25      3 |      10     26
gfz   uuuux |     -54      -8     179     -53    -26 |      13     27
grg   uuuux |     -48     -94     212    -207     21 |      -7     40
igr   xxxxx |     -18     -29     253     -73      9 |       3     22
irf   xxxxx |      16      13     -71      34     -5 |       6     23
jpl   uuuuu |      94      56      38      27     -9 |      13     29
mit   uuuuu |      44      14    -292     126      2 |      15     27
ngs   uuuuu |     -16      26     153      19      4 |      10     23
sio   uuuuu |     122      63    -339     118      9 |      35     44

Table 7.1635.2   GPS week: 1635   Day: 2   MJD: 55691.500

                                                         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     -11      47    -105     11 |       0     22
emr   uuuuu |       3      25     111    -109    -17 |      40     45
esa   uuuuu |     -34     -20     148      20      2 |      10     26
gfz   uuuux |     -67      38     105     -30    -24 |      10     29
grg   uuuux |      -8     -32     131    -110     21 |      -7     40
igr   xxxxx |     -37       2     147     -49      3 |       4     20
irf   xxxxx |       0       7      40     -47     -2 |       6     23
jpl   uuuuu |      45      41     128      50      3 |      14     28
mit   uuuuu |      26      14    -170     -25      2 |      15     27
ngs   uuuuu |      19     -47    -218     113     -4 |      11     23
sio   uuuuu |      97      32    -144      43     15 |      38     44

Table 7.1635.3   GPS week: 1635   Day: 3   MJD: 55692.500

                                                         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     -27     193     -32     14 |       1     23
emr   uuuuu |      43      24       7      59     -9 |      37     43
esa   uuuuu |     -38     -30      91     -30      2 |      11     26
gfz   uuuux |     -85       2     278    -109      3 |       5     28
grg   uuuux |      -4     -35     222    -129     18 |      -2     37
igr   xxxxx |     -48      34     167       7      0 |       6     20
irf   xxxxx |      20      15      23      11      1 |       5     23
jpl   uuuuu |      -3     -27      23     228     -1 |      14     28
mit   uuuuu |      63      19    -277     103     -1 |      16     27
ngs   uuuuu |      -1      23    -148     -54     -1 |      10     23
sio   uuuuu |     129      57    -184     103     12 |      40     46

Table 7.1635.4   GPS week: 1635   Day: 4   MJD: 55693.500

                                                         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 |     -58     -40      45    -126     17 |       0     22
emr   uuuuu |      71      18      18     146    -15 |      34     40
esa   uuuuu |     -33     -23      86       8      8 |       9     26
gfz   uuuux |     -98     -23     272    -286     20 |       1     26
grg   uuuux |      -5     -53     213    -134     39 |      -5     35
igr   xxxxx |     -44     -22      92    -102      3 |       4     19
irf   xxxxx |       0       3      23     -64      8 |       4     23
jpl   uuuuu |      -9      27     105      70    -29 |      12     27
mit   uuuuu |      33       7    -251     -15      6 |      14     26
ngs   uuuuu |      12      32    -183     138     11 |       8     22
sio   uuuuu |      98      43    -121      30     13 |      41     47

Table 7.1635.5   GPS week: 1635   Day: 5   MJD: 55694.500

                                                         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 |     -37      -6      65    -173     16 |      -1     23
emr   uuuuu |      49      33     -56     387    -18 |      28     37
esa   uuuuu |     -54     -19     -18     -85      8 |       7     25
gfz   uuuux |    -115     -24     319    -347     39 |      -3     23
grg   uuuux |      25     -55     130     -96     30 |      -8     32
igr   xxxxx |     -64     -13      77     -93      7 |       1     20
irf   xxxxx |     -17       5      42     -68      7 |       1     23
jpl   uuuuu |     -43       2     186     195    -14 |       4     29
mit   uuuuu |      -6       3    -177      44      4 |      11     26
ngs   uuuuu |      97      41    -169     121      3 |       4     20
sio   uuuuu |      68      39      10     -37     10 |      39     46

Table 7.1635.6   GPS week: 1635   Day: 6   MJD: 55695.500

                                                         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 |     -38     -12     201    -294     12 |       4     16
emr   uuuuu |      43       8     142     137    -13 |      27     37
esa   uuuuu |     -30     -25     -64      20      2 |      11     23
gfz   uuuux |    -116      -6     200    -322     47 |       2     24
grg   uuuux |      54      68       2      61     27 |      -2     29
igr   xxxxx |     -31     -20     -11    -179     13 |       3     17
irf   xxxxx |     -23       4      72    -160      9 |       4     20
jpl   uuuuu |     -91    -106     138     112    -11 |       6     27
mit   uuuuu |     -28      -6     -43     -93      7 |      15     24
ngs   uuuuu |     110      37    -166     183      1 |       7     18
sio   uuuuu |      48      31     122    -201      9 |      44     47



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