[IGSREPORT-20341] Wk 1661 IGS Final Orbits

Jim Ray igs.acc at noaa.gov
Thu Nov 24 07:39:38 PST 2011


Author:  AC Coordinator / NOAA NGS

sum-file Version 2.0
Final IGS Orbit Combination - Week 1661   (Nov 06, 2011 - Nov 12, 2011)

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


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

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

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

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

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

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

where X and V are the inertial sv state and velocity vectors and c is the speed
of light. Also for compatibility, no satellite L1/L2 delay calibration should be
applied.


SOFTWARE:
---------

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

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

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

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

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


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

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

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

  Starting with GPS wk 0894, IGS LOD combinations were implemented in the 
Final IGS solutions.  AC LOD biases with respect to Bulletin A are estimated
using Bulletin A most recent 3 weeks (21 days), i.e. up to 5 days prior to
the last non-predicted day of Bulletin A.  AC LOD biases are removed and the
new AC bias-free LODs are used to compute a weighted IGS LOD which in turn
is integrated into IGS UT1-UTC. The starting UT1-UTC value is chosen as
Bulletin A fifth day prior to its last non-predicted day. Both IGS LOD and 
UT1-UTC values are printed in the IGS Final erp file.



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

igs1661[0-6].sp3  IGS GPS ephemeris files in SP3 format.
igs1661[0-6].clk  IGS GPS satellite and station clocks in clock RINEX format.
igs1661[0-6].cls  IGS GPS clock combination summary report.
igs16617.erp      Earth Rotation Parameters (ERP) and their rates as well as
                  Universal Time (UT1-UTC) and Length Of Day (LOD) associated 
                  with IGS ephemerides.
igs16617.sum      Complete report.

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

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

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

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

 4. The following clock solutions were excluded from the combination because they
    were biasing the combined clock solutions (clock shifts/outliers) but were
    kept for the RMS computation.  Duplicate entries can arise due to separate
    combination runs for the 30-s clocks ACs (listed first) and the 5-min clock
    ACs (listed second).
    
               Day | Centre | PRN/STA list
               ----+--------+---------------
                0  |  COD   | 25 25
                0  |  EMR   | 32
                0  |  ESA   | KHAJ KHAJ KOUR MATE
                0  |  GFZ   | 8 ISPA KOSG MDVJ
                0  |  GRG   | KOUR
                0  |  JPL   | 32
                0  |  MIT   | 27 25 27 CAS1 KOSG HYDE KOSG
                1  |  COD   | NICO
                1  |  EMR   | 32
                1  |  ESA   | KOUR
                1  |  GFZ   | BOR1 DGAR KARR SYOG WTZR YAKT
                1  |  GRG   | AMC2 KOUR SANT
                1  |  JPL   | 8 32 AREQ YAKT
                1  |  MIT   | 27 27
                2  |  COD   | 3 3 MATE NRIL TLSE
                2  |  EMR   | 32 32 MATE
                2  |  ESA   | MATE NICO NICO REUN
                2  |  GFZ   | 30 ARTU MDVJ REUN SCUB SFER STHL VILL
                2  |  GRG   | AMC2
                2  |  JPL   | 32 AREQ DRAG YELL
                2  |  MIT   | 27 32 27 32
                3  |  COD   | NKLG
                3  |  EMR   | 32 BAN2
                3  |  ESA   | REUN DRAG KOUR REUN STHL
                3  |  GFZ   | MDVJ PDEL
                3  |  GRG   | AMC2 KOUR SANT
                3  |  JPL   | 32 MCM4
                3  |  MIT   | 6 27 32 6 27 32 USNO USNO
                4  |  COD   | HNPT STHL
                4  |  EMR   | 32 10 32
                4  |  GFZ   | AREQ HARB MDVJ WTZR
                4  |  GRG   | AMC2
                4  |  JPL   | 32
                4  |  MIT   | 27 32 27 32
                5  |  ESA   | KOSG STHL UNSA
                5  |  GFZ   | KIRU KOUC STHL
                5  |  GRG   | AMC2 KOUR
                5  |  JPL   | 32
                5  |  MIT   | 22 27 32 22 27 32 CAS1 KOSG CAS1 KOSG NICO
                6  |  ALL   | 3
                6  |  COD   | WROC COCO DAV1 WROC
                6  |  EMR   | 32 32
                6  |  ESA   | TIXI UNSA
                6  |  GFZ   | 20 BRUS DRAO MDVJ PRDS SFER STJO
                6  |  GRG   | AMC2 KOUR
                6  |  JPL   | 32 NKLG THU3
                6  |  MIT   | 27 32 27 32 CAS1 HYDE

 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   |  27
                6  |  ESA   |   3

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

 7. Small rotations were applied to all the AC orbit and ERP values in order
    to align them to the 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  |    -.5    -.2    -.6     -60      9     18     .11
       EMR  |    7.6    7.0   10.0      -9     10      0     .43
       ESA  |    7.0    4.1  -12.0     138   -198    124     .23
       GFZ  |    -.7     .5    -.7     -38     -7      7     .24
       GRG  |    7.9    2.8   -2.7     -23     38     -4     .28
       JPL  |   -1.0    5.5   12.4      19    -53      9     .46
       MIT  |    6.5    2.8    3.0     -27     12    -34     .19
       NGS  |   10.3    2.5    3.8      -4    -56     48     .46
       SIO  |    6.5    2.7    4.3      16   -139     11     .16


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

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

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

    
ORBIT COMBINATION AND EVALUATION STATISTICS:                                    
--------------------------------------------                                    
      
Most combination statistics are with respect to the combined orbits and
consist of five parts. The first, Table 1, summarizes all statistics for
the week.  It contains means and standard deviations over the week of
satellite ephemeris and clock correction transformation parameters for
each centre (table 1.1661.a). It also displays the computed satellite
position sigmas for the combined orbits (table 1.1661.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 2.1661.[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 3.1661.[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 5.1661.0-6).

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 1661 summary.                       (Nov 06, 2011 - Nov 12, 2011)

Table 1.1661.a   GPS week: 1661   MJD: 55871.000-55877.000

         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  257|    0     0     0   118   -82    -7  -.26    9    8 |    -205    -170     19     85
        |    0     0     0    11    16    23   .03           |     556    1178
emr   94|    1     2     8     8  -112    -5   .39   19   19 |    2914    -327     17    137
        |    2     1     1    23    34    13   .04           |    1522    1623
esa  135|    0     0     1  -148   176    36   .17   11    7 |    -574     673     15    182
        |    1     0     0    13    22    11   .03           |     997    1711
gfz  202|    0     0    -2    58   -86   -15  -.20   11   10 |     481    -358     22     97
        |    0     1     1    50   101    11   .04           |     419     859
grg  133|    2     3    -5    44  -145   -14   .65   15   15 |     364    -520     54    227
        |    1     0     1    16    12    13   .01           |     399     602
igr  n/a|    0     0     0   -19   -45   -52  -.12    5    5 |   -2752     456     18     78
        |    0     0     1    26    20    15   .03           |    3056    1753
jpl  137|   -1     0     4   -47    59    55   .57   14   14 |    3496    -306     18     95
        |    1     1     1    16    17    36   .03           |    1333    1568
mit  257|    0    -2    -3    27  -135   -33  -.40   12   10 |      34    -289     20    168
        |    0     0     0    24    28    11   .03           |     153     392
ngs  222|    0     0     0    11    39   -33  -.18   14   11 |  -84691  372916   1979   3789
        |    1     1     2    27    70    23   .01           |  266260 1168950
sio  251|   -2    -1     0   -36   180   -29  -.26   18   16 |     ---     ---    ---    ---
        |    2     2     0    31    19     8   .02           |     ---     ---


Table 1.1661.b   GPS week : 1661   MJD: 55871.000-55877.000   

         Satellite position sigmas for the combined orbits
         (coded in the IGS SP3 orbit files).
         "E" flags eclipsing satellites.
         Units: mm.

              Day of GPS week
 PRN  |    0    1    2    3    4    5    6 |  Remarks
------+------------------------------------+------------------------------------------
   1  |    5    5    5    4    4    4    4 |
   2  |    4    4    5    5    4    4    5 |
   3  |    4    3    4    3    4    4    5 |
   4  |    4    4    4    4    8    4    4 |
   5  |    4    4    5    5    4    6    5 |
   6  |    4    3    4    7    3    4    5 |
   7  |    4    4    4    4    4    4    5 |
   8  |    5    5    5    4    4    4    5 |
   9  |    4    4    4    4    4    4    4 |
  10  |    6    6    6    6    6    6    7 |
  11  |    4    4    4    4    4    4    4 |
  12  |    5    5    5    4    4    5    5 |
  13  |    5    4    4    4    4    4    5 |
  14  |    4    4    4    4    4    5    5 |
  15  |    4    4    4    4    4    4    4 |
  16  |    5    4    5    5    4    4    5 |
  17  |    5    5    5    4    5    4    5 |
  18  |    4    4    4    4    4    4    4 |
  19  |    4    4    5    4    4    5    5 |
  20  |    3    4    4    4    4    4    4 |
  21  |    4    4    4    4    4    5    5 |
  22  |    4    3    4    4    3    4    5 |
  23  |    5    4    5    5    4    5    5 |
  25  |    4    4    4    4    4    4    5 |
  26  |    3    3    4    3    4    4    3 |
  27  |   10    9   10   11    8   10    7 |
  28  |    4    4    4    4    4    4    5 |
  29  |    5    5    5    4    5    5    5 |
  30  |    5    6    5    5    4    5    6 |
  31  |    4    5    5    5    4    4    5 |
  32  |    6    6    6    5    5    5    6 |



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 2.1661.0   GPS week: 1661   Day: 0   MJD: 55871.000                            

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  257|   -1     0     2   139   -75     9  -.29    9    8 |    -150    -692     16     84
        |                     32   -39                       |
emr   94|    0     4     7    45   -82     3   .35   20   20 |     403    1136     19    123
        |                    -27   -50                       |
esa  135|    1     0     0  -160   204    26   .17    8    8 |   -1307    1310     17    181
        |                     37   -28                       |
gfz  202|    0     0    -2    21   -59     0  -.19    8    8 |     228    -206     22     90
        |                    -40   -33                       |
grg  133|    2     2    -7    51  -129     7   .65   14   13 |     -29    -511     56    231
        |                     11   -76                       |
igr  n/a|    0     0     1   -22   -53   -50  -.17    5    5 |   -8061    2282     19     77
        |                     -3   -24                       |
jpl  137|    0     0     4   -58    88    13   .56   14   14 |    1115    1179     20     93
        |                     93  -162                       |
mit  257|    0    -1    -3    12  -170   -29  -.39   12   10 |     106    -652     23    170
        |                     37    42                       |
ngs  222|    0    -1     2    43     5   -14  -.18   14   12 |    -186    -671   2055   3496
        |                    -66   -44                       |
sio  251|    0    -3     0   -46   176   -19  -.24   19   17 |     ---     ---    ---    ---
        |                     36   -83                       |

Table 2.1661.1   GPS week: 1661   Day: 1   MJD: 55872.000                            

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  257|    0     0     1   111   -91   -19  -.28    8    8 |     -66   -1095     17     90
        |                     26   -68                       |
emr   94|    4     3     5   -20  -163    15   .34   19   19 |    1815     902     13    136
        |                     44    18                       |
esa  135|    0     2     1  -147   172    28   .18    7    7 |    -223    1448     15    224
        |                     38     5                       |
gfz  202|   -1     0    -1    64     0    -1  -.16   10   10 |     378    -542     20     93
        |                    -12    -4                       |
grg  133|    2     3    -2    35  -134    -8   .65   14   13 |    -139     103     70    218
        |                     38   -45                       |
igr  n/a|   -1     0     0   -22   -61   -58  -.15    5    5 |   -5423    2056     20     89
        |                     10    -5                       |
jpl  137|   -2    -1     2   -45    68    53   .52   15   14 |    2603    1161     17     94
        |                     77  -123                       |
mit  257|    0    -3    -3    36  -141   -28  -.42   12   11 |     -10    -285     21    144
        |                     17    12                       |
ngs  222|    0     0     0     1   -17   -16  -.20   12    8 |    -238    -923   1789   4040
        |                    -49   -26                       |
sio  251|    0    -4     0    -5   171   -23  -.29   18   15 |     ---     ---    ---    ---
        |                     14  -111                       |

Table 2.1661.2   GPS week: 1661   Day: 2   MJD: 55873.000                            

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  257|   -1     1     0   108  -110    -6  -.31   10    9 |    -605    1105     17     72
        |                     41   -17                       |
emr   94|    3     1     6   -16  -147    -3   .36   18   18 |    2371    1607     18    138
        |                     -5   -26                       |
esa  135|    0     0     1  -154   134    51   .18    7    7 |    -229     474     14    161
        |                     58     7                       |
gfz  202|   -1     0    -2   160    59   -24  -.23   11   10 |     278     869     23    110
        |                    -32    -4                       |
grg  133|    0     3    -6    14  -145   -26   .63   15   15 |     109     315     46    210
        |                     43   -38                       |
igr  n/a|    0     0     0   -65   -80   -82  -.14    5    5 |   -3558    2358     17     69
        |                    -12    35                       |
jpl  137|    0     0     5   -73    57    63   .59   14   14 |    3422    1507     19     85
        |                     56  -137                       |
mit  257|    0    -2    -2    63  -114   -38  -.44   12   11 |     -94     431     22    177
        |                      6     2                       |
ngs  222|    0    -1     0   -36   -78   -63  -.19   15   10 |    -451     825   2284   3934
        |                    -34    58                       |
sio  251|    0    -3     0    -7   213   -38  -.29   18   16 |     ---     ---    ---    ---
        |                     15  -124                       |

Table 2.1661.3   GPS week: 1661   Day: 3   MJD: 55874.000                            

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  257|   -1     0     0   117   -90   -32  -.24    7    7 |   -1005    1251     22     81
        |                      6   -52                       |
emr   94|    1     1     9     8  -134   -23   .44   20   20 |    3856      13     18    135
        |                     18     1                       |
esa  135|    1     0     1  -140   179    54   .17    6    6 |    -563     671     16    190
        |                     42    -9                       |
gfz  202|   -1     0    -3    69  -146   -10  -.19   11   10 |     246    -290     23    103
        |                     19    11                       |
grg  133|    3     2    -7    61  -148   -21   .67   16   16 |     517    -698     41    243
        |                     24   -66                       |
igr  n/a|    0    -1     0     3   -30   -56  -.10    6    6 |   -1288     292     18     83
        |                    -42    31                       |
jpl  137|   -3     1     4   -30    60    65   .59   15   15 |    4733    -605     19     86
        |                     81   -78                       |
mit  257|    0    -2    -3    13  -160   -43  -.42   11   11 |     -50    -201     19    181
        |                     31    12                       |
ngs  222|    1     2     1    19   100   -41  -.17   14   13 |   90811 -390035   1757   3399
        |                   -188  -167                       |
sio  251|    0    -2     0   -53   162   -36  -.23   17   15 |     ---     ---    ---    ---
        |                     33  -104                       |

Table 2.1661.4   GPS week: 1661   Day: 4   MJD: 55875.000                            

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  257|   -1     0     1   128   -67     6  -.24    8    8 |    -547     765     20    104
        |                     28   -32                       |
emr   94|    4     2     9    25   -95    -4   .38   18   18 |    4962   -2179     16    153
        |                      4   -28                       |
esa  135|    0     1     0  -127   183    38   .18    6    6 |    1169   -2990     12    173
        |                     36   -12                       |
gfz  202|   -1    -3    -2    27  -222   -29  -.19   11   11 |     330      98     23     99
        |                    -27     8                       |
grg  133|    0     3    -4    41  -165    -6   .64   17   16 |     407    -390     61    219
        |                     15   -88                       |
igr  n/a|    0     0     0    18   -33   -36  -.11    5    5 |    -101   -1412     17     77
        |                    -35    -8                       |
jpl  137|    1     1     5   -25    35    81   .55   15   14 |    5050   -2280     18     89
        |                     78   -61                       |
mit  257|    0    -2    -2     8  -154   -40  -.37   10    9 |     -91    -142     20    191
        |                     29    28                       |
ngs  222|    0     0     0    42    98   -64  -.17   13    9 | -683615 3003333   1973   3485
        |                    -75   -94                       |
sio  251|   -1     0     0   -46   157   -29  -.27   15   13 |     ---     ---    ---    ---
        |                     32   -88                       |

Table 2.1661.5   GPS week: 1661   Day: 5   MJD: 55876.000                            

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  257|    0     0     0   105   -70   -34  -.23    9    9 |     558   -1653     23     82
        |                     28   -22                       |
emr   94|   -2     0    10     0   -83   -22   .42   19   19 |    3910   -1914     23    149
        |                     -6   -16                       |
esa  135|    0     1     2  -166   195    32   .11    7    7 |   -2016    2109     17    169
        |                     68     0                       |
gfz  202|    0    -2    -1    54  -183   -20  -.27   10   10 |    1408   -1985     26     95
        |                    -17     6                       |
grg  133|    1     3    -7    44  -157   -29   .66   16   16 |     824   -1365     60    231
        |                     33   -52                       |
igr  n/a|    1     0    -1   -19   -33   -39  -.11    5    5 |    -337   -1204     18     74
        |                     -8    20                       |
jpl  137|    0     1     2   -46    41   107   .58   13   13 |    3986   -1609     19    110
        |                     75   -31                       |
mit  257|    0    -2    -3    56  -121   -42  -.34   12    9 |      41    -771     20    158
        |                      4    14                       |
ngs  222|    2    -1    -1    16   102    -5  -.17   14   12 |     521   -1526   1947   4148
        |                    -23  -126                       |
sio  251|   -4     0     0    -7   180   -19  -.25   18   16 |     ---     ---    ---    ---
        |                     -8  -113                       |

Table 2.1661.6   GPS week: 1661   Day: 6   MJD: 55877.000                            

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  257|    0     0     0   120   -68    27  -.24    9    8 |     376    -871     18     83
        |                     18   -37                       |
emr   94|    0     2    10    14   -81    -6   .42   18   18 |    3087   -1860     17    130
        |                      2   -41                       |
esa  135|    2     0     1  -142   163    25   .20   34   11 |    -851    1695     16    176
        |                     55    -2                       |
gfz  202|    0    -1     0    11   -55   -19  -.19   13   12 |     501    -451     23     91
        |                     -7     9                       |
grg  133|    3     3    -5    60  -139   -18   .66   15   14 |     862   -1096     45    243
        |                     14   -51                       |
igr  n/a|    0     0    -1   -25   -25   -42  -.08    6    6 |    -496   -1175     21     82
        |                     10    10                       |
jpl  137|    0     2     5   -50    66     1   .59   15   15 |    3566   -1500     19    108
        |                     73   -96                       |
mit  257|    0    -3    -3     2   -90   -11  -.39   11    9 |     341    -406     19    158
        |                     12     7                       |
ngs  222|    1     0    -4    -5    65   -27  -.20   13   12 |     321    -587   2049   4026
        |                    -53   -15                       |
sio  251|   -7     2     0   -91   198   -40  -.26   20   19 |     ---     ---    ---    ---
        |                     15  -118                       |

       
       
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 3.1661.0   GPS week: 1661   Day: 0   MJD: 55871.000                            

        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  |    9   17    8    9  ---    5   14   15   11   18    4 |    26   35   30   25  ---   27   40   35   26   30    27
   2  |    6   19    8   10   10    5   14    9   10   27    4 |    18   27   22   24   31   17   29   18   20   23    19
   3  |    9   12    5    9   10    5    9    8   12   20    3 |    19   27   23   26   32   21   26   27   24   24    22
   4  |    9   10    6    6   15    4   10   11   11   26    4 |    31   33   33   35   41   31   35   34   31   33    32
   5E |   10   21    8    8   11    5   20   13   13   10    4 |    28   33   31   24   31   26   30   24   25   26    27
   6  |    8   10    6   11    9    3   10    8   17   14    3 |    24   29   28   27   38   26   28   33   30   29    28
   7  |    5   15    6    9   14    4   19    9   12   18    4 |    20   27   20   23   27   20   27   21   20   20    20
   8  |   12   23    6    7   11    7   14   16   13   18    4 |    19   31   20   18   22   18   29   25   22   22    18
   9  |    8   22    7    9    9    9   12   14   14   16    4 |    21   30   25   25   21   24   25   22   31   22    22
  10E |   16   25   12   11   20    5   16   13   22   14    5 |    33   40   29   35   39   30   35   31   34   36    31
  11  |    7   18    7    5   15    4   11    8   14   23    4 |    35   40   38   40   48   36   38   45   33   37    37
  12  |    8   25    9    7   14    5   19   14   11   19    4 |    27   40   33   30   36   30   37   33   32   32    30
  13  |    9   21    8    4   20    4   13   12   13   23    4 |    22   35   28   24   39   23   31   25   26   26    25
  14  |    9   22    9    7   12    3   12   11   13   12    4 |    20   31   26   24   32   21   28   25   24   22    22
  15  |    7   26    6    6   14    6   15   10   13   15    4 |    23   33   26   25   32   23   31   25   22   24    24
  16  |    8   27   10    9   14    4   15   15   12   17    4 |    31   42   29   28   38   27   35   26   30   29    28
  17  |    9   14    5   16   15    7   17   12   17   22    4 |    27   24   31   38   33   29   31   36   30   26    29
  18E |    7   27    7    8   11    5   14   13   10    8    4 |    23   34   21   23   26   22   27   22   20   25    21
  19  |    8   12    5    8   10    4   12   10   10   23    3 |    25   28   27   30   30   27   26   35   26   30    27
  20E |    6   17    7    7   13    4    9    7   11   14    3 |    34   37   36   33   35   34   35   35   32   35    34
  21  |    8   25    7    6   15    4   13   10   12   15    4 |    15   25   16   18   25   13   20   17   18   19    14
  22E |    6   19   10    6    9    5   11   11    8   10    3 |    21   27   24   21   26   20   27   22   21   23    22
  23  |    9   24    9    7   17    4   13   11   12   22    4 |    23   38   29   27   29   25   31   27   27   33    27
  25  |    7   20    7    8   13    4   13   13   11   13    4 |    29   36   30   32   35   29   37   30   31   32    29
  26  |    6   12    7    7    7    6   12    9   15    9    3 |    16   23   20   19   24   15   23   21   16   16    17
 X27  |   24   20   28   18  ---   13   25   16  ---  ---   10 |    22   25   33   18  ---   24   20   25  ---  ---    19
  28  |   11   21    3    8   18    4   15   10   13   10    4 |    25   36   25   26   34   23   31   23   24   23    24
  29  |    6   15    7   11   14    5   17   21   12   35    5 |    28   30   28   30   33   27   31   32   29   34    27
 X30  |    6   16    6    9   11    6  ---   15   13   32    4 |    30   33   29   32   31   28  ---   32   34   28    30
  31  |    7   15    8    9   16    4   17   10   15   19    4 |    15   23   21   23   30   15   27   15   19   22    17
  32E |   11   30    8    8   19    7   16   12   24   19    5 |    52   61   54   55   45   53   60   61   55   58    57
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |    9   20    8    8   14    5   14   12   14   19      |T   25   32   27   27   32   25   31   28   27   27    26
 WRMS |    8   20    8    8   13    5   14   10   12   17      |NE  23   31   26   26   32   23   29   27   26   26    24
 MEDI |    8   20    7    8   14    5   14   11   12   18      |MD  24   33   28   26   32   25   30   26   26   26    27

Table 3.1661.1   GPS week: 1661   Day: 1   MJD: 55872.000                            

        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   11    5   14  ---    6   15   20   11   16    4 |    32   37   36   34  ---   34   44   35   31   36    33
   2  |    7   21    9    9   12    4   14    9   10   23    4 |    15   29   22   21   30   17   26   16   19   19    17
   3  |    8   10    6    9    8    5   11   10    8   19    3 |    16   19   18   18   24   17   24   18   16   17    15
   4  |    6   10    5    4   15    5   11   10    8   22    3 |    25   29   26   25   33   25   28   26   27   27    24
   5E |    9   18    9   10   11    6   19   15    8   13    4 |    25   33   27   23   31   25   32   28   25   23    24
   6  |    7    9    6    8    7    4   11   10    8   15    3 |    20   22   20   17   27   19   27   22   17   19    18
   7  |    9   16    5   10   15    4   15    9   11   18    4 |    19   24   18   18   24   16   22   18   22   17    16
   8  |   13   25    8   12   11    6   17   17    9   21    5 |    17   31   21   16   22   17   27   27   19   25    17
   9  |    8   17    6    7   10    5   13   13   14   18    4 |    24   25   18   16   24   18   24   24   17   22    17
  10E |   16   21    9   10   23    5   20   13   24   21    6 |    33   39   33   32   36   32   38   33   37   32    30
  11  |    7   14    6    9   13    4   13   12   11   19    3 |    30   32   30   27   39   31   35   35   27   33    28
  12  |    7   25    8   10   15    6   19   12    8   18    4 |    24   35   23   23   34   20   32   27   24   24    22
  13  |    7   20    4    8   16    5   12   11    9   22    4 |    21   32   19   20   32   18   28   20   22   19    18
  14  |    6   20    6   10   10    3   16   11   11    9    3 |    19   31   20   18   30   20   28   20   22   18    19
  15  |    8   25    6   10   16    6   14   11   10   13    4 |    22   34   25   23   37   23   30   26   22   21    22
  16  |    7   26    8    8   16    4   14   11    6   19    4 |    27   32   25   23   36   24   28   23   27   24    24
  17  |   10   13    6   22   15    6   17   15    9   18    5 |    20   24   20   33   22   21   24   25   21   18    19
  18E |    5   19    7    8    9    4   13   11   13   12    3 |    18   24   18   21   23   16   22   20   15   19    17
  19  |    7   15    5    9   11    5   11   13   12   23    4 |    16   21   17   18   18   17   20   21   18   19    15
  20E |    7   18    6    8   14    4   12    9   11   13    3 |    33   37   34   37   37   34   33   40   38   39    34
  21  |    8   23    6    8   13    4   17   11   13   15    4 |    13   27   11   11   22    8   21   15   16   14     9
  22E |    6   17    8    8   11    6   10   11    8   10    3 |    18   24   21   20   26   18   23   18   17   20    18
  23  |    9   25    7    8   12    4   15   11   11   21    4 |    31   39   24   26   32   24   32   27   26   25    24
  25  |    6   16    8   11   14    4   13   12    9   13    3 |    26   29   25   26   35   24   35   27   22   26    23
  26  |    7   14    7   11    7    3   10    9   11   11    3 |    18   23   19   19   23   15   21   19   15   15    15
 X27  |   21   23   20   15  ---   20   16   17  ---  ---    8 |    22   29   25   14  ---   25   23   23  ---  ---    17
  28  |   11   19    4   11   18    5   13   13    9   10    4 |    22   32   25   25   35   22   27   23   25   20    22
  29  |    5   16    8   10   15    6   16   22   12   29    5 |    17   22   18   17   17   13   20   22   17   23    14
 X30  |   10   20   11   12   21    7  ---   22   12   28    6 |    66   66   61   63   55   63  ---   62   69   55    60
  31  |    7   21    8   12   15    4   19    9    9   20    4 |    15   28   17   17   30   14   26   14   18   17    14
  32E |   12   26    8   11   18    8   14   19   26   17    5 |    50   55   55   51   47   54   57   56   58   54    53
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |    8   19    7   10   14    5   15   12   12   18      |T   24   31   24   24   30   23   28   26   24   24    22
 WRMS |    8   19    7   10   13    5   14   11    8   15      |NE  23   30   23   22   29   21   27   24   23   23    20
 MEDI |    7   19    7   10   14    5   14   11   10   18      |MD  22   29   22   21   30   20   27   23   22   21    19

Table 3.1661.2   GPS week: 1661   Day: 2   MJD: 55873.000                            

        Weighted Average                                            Orbit Dynamics (7 days)
 PRN  |  cod  emr  esa  gfz  grg  igr  jpl  mit  ngs  sio  IGS |   cod  emr  esa  gfz  grg  igr  jpl  mit  ngs  sio   IGS
------+--------------------------------------------------------+---------------------------------------------------------
  X1  |    8   15    6    7  ---    7   16   16   15   11    4 |    31   48   40   32  ---   36   52   35   33   34    36
   2  |    8   20    9   11   13    5   14    9   15   21    4 |    23   33   29   24   35   26   32   22   29   20    23
   3  |   11   11    6    8   12    7   11   12   13   18    4 |    27   29   24   16   30   20   29   22   20   20    19
   4  |   10    9    6   13   11    4   12   11   12   19    4 |    33   36   37   32   42   35   37   32   38   31    32
   5E |    9   19    6   10   17    5   16   13   16   19    4 |    28   40   30   24   37   29   35   32   34   24    27
   6  |    8   11    5   10    9    6   11   13   12   12    3 |    25   33   26   24   34   25   32   29   24   26    24
   7  |    8   17    6   11   16    3   13    9    8   17    4 |    21   28   23   21   27   19   27   22   21   21    18
   8  |   14   20    4   15   13    6   13   11   11   22    4 |    21   31   22   23   24   19   27   27   21   26    19
   9  |    9   18    9   11   11    6   13   12   11   20    4 |    23   35   25   22   30   22   31   26   23   26    21
  10E |   14   22   12   12   16    7   19   14   29   22    6 |    31   37   31   25   29   28   34   26   41   27    24
  11  |    9   16    6    9   16    7   14   11   19   14    4 |    32   40   36   36   47   35   40   37   34   35    34
  12  |    8   22    9    9   15    5   17   15   11   17    4 |    25   37   27   26   35   26   34   29   28   26    25
  13  |    9   21    6    7   20    6   12    9   10   19    4 |    26   38   26   21   39   25   33   26   27   20    22
  14  |   12   20    8    8   12    5   13    9   13   10    4 |    24   35   28   22   37   27   33   28   27   25    24
  15  |    8   20    6    6   15    5   13   11   14   14    4 |    29   38   30   28   43   28   36   33   34   23    28
  16  |    6   25    9    8   13    6   17   12   11   22    4 |    28   37   30   22   35   28   35   25   29   26    26
  17  |    9   13    6   21   15    5   16   12   11   18    4 |    26   30   30   35   36   31   32   32   31   25    28
  18E |    8   22    9    8   16    4   11   10    8   11    4 |    23   32   24   24   31   24   26   24   22   27    22
  19  |   10   14    6    4   11    7   15   17   15   23    4 |    25   32   27   22   27   25   29   29   23   25    23
  20E |    7   18    6   10   14    5   13   10   18   13    4 |    32   41   34   25   39   33   38   32   35   31    30
  21  |   10   24    7   13   14    5   13    8    7   16    4 |    15   32   17   19   29   15   25   18   15   17    14
  22E |    7   17    8    7   14    4   10    9   10   10    3 |    20   29   21   20   30   18   26   21   21   20    19
  23  |   11   26    7   11   16    6   14   10   13   20    4 |    33   44   30   24   37   28   37   29   32   24    26
  25  |    8   15    8   11   16    6   13   13   14   13    4 |    25   35   29   27   34   28   35   29   30   29    26
  26  |    7   12    5    6   11    4   12   10   17   14    3 |    20   30   22   19   29   19   27   22   22   18    18
 X27  |   25   20   21   17  ---   17  ---   12  ---  ---   10 |    27   33   22   23  ---   22  ---   27  ---  ---    18
  28  |   11   18    5   10   17    3   13   11   16   10    4 |    28   37   28   26   35   27   32   26   27   24    25
  29  |    8   13    8   12   18    7   14   19    8   28    5 |    24   29   26   27   33   24   25   26   25   24    23
 X30  |    9   16    7   15   15    6  ---   17   13  ---    5 |    27   33   26   33   27   28  ---   29   26  ---    26
  31  |    8   20    8   12   19    5   19   10   17   19    5 |    21   31   22   22   34   22   32   19   31   18    19
  32E |   12   21    8   12   19    7   13   20   31   18    5 |    50   57   54   45   50   53   59   49   66   48    50
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |   10   18    7   11   15    5   14   12   15   18      |T   26   35   28   25   34   26   33   27   28   25    24
 WRMS |    9   18    7   10   15    5   14   11   10   16      |NE  25   34   27   25   33   25   32   27   27   24    23
 MEDI |    9   18    7   10   15    6   13   11   13   18      |MD  26   35   27   24   34   26   32   27   27   25    24

Table 3.1661.3   GPS week: 1661   Day: 3   MJD: 55874.000                            

        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   15    4    9  ---    6   13   16   16    8    4 |    34   43   37   38  ---   32   47   39   36   34    36
   2  |    6   22    8   15   16    5   17    8   16   20    4 |    18   31   27   29   34   22   31   19   25   18    22
   3  |    6   14    4    8   14    5    9    9   11   18    3 |    20   23   21   24   30   22   25   23   28   22    22
   4  |   10   13    5    9   19    5   10   14   13   19    4 |    31   31   39   41   46   31   37   33   33   34    33
  X5E |    9   16    7   12   15    5   16   19  ---   18    5 |    33   40   35   36   40   33   35   37  ---   34    33
  X6  |    8   13  ---  ---   19   11  ---   14   22  ---    7 |    26   31  ---  ---   34   24  ---   30   36  ---    27
   7  |    5   17    6   10   18    4   14    6   14   15    3 |    23   30   27   25   29   23   27   23   31   21    24
   8  |   11   24    5   14   16    6   14   11   11   16    4 |    22   35   25   20   25   22   28   25   29   20    22
   9  |    5   26    6    9   13    7   13   14   15   14    4 |    23   34   24   25   24   21   27   27   28   21    23
 X10E |   13   22    9   16   24    7   20   14  ---   23    6 |    31   42   37   42   42   35   39   35  ---   35    34
  11  |    5   17    6    7   14    7   13   12   15   13    3 |    38   41   42   40   51   38   42   44   36   38    39
  12  |    7   24    7    9   17    7   20   11   13   13    4 |    28   38   31   31   36   28   36   32   31   28    29
  13  |    6   18    5    9   23    7   12    9   13   17    4 |    28   38   27   27   40   26   33   26   32   22    26
  14  |    8   22    6   13   14    6   16   10   16   11    4 |    21   31   25   25   30   24   30   23   31   24    24
  15  |    7   24    5    6   17    5   14   10   18   14    4 |    26   34   27   28   36   26   32   25   29   26    26
  16  |    7   30    7   10   18    6   14   10   15   20    4 |    30   42   33   28   37   32   35   28   37   33    31
  17  |    9   14    5   11   13    7   18   14   14   17    4 |    20   26   26   31   33   25   31   31   32   24    26
 X18E |    5   17    6   10   17    6   13   11  ---    9    3 |    26   31   26   25   29   26   29   24  ---   26    26
  19  |    7   14    4   11   12    5   11   18    8   23    4 |    25   26   27   28   31   26   26   32   25   27    26
  20E |    6   18    7    9   21    5   11   11   13    9    3 |    41   42   41   42   41   38   40   37   39   39    38
  21  |    6   23    3   10   16    6   15   13   17   19    4 |    19   27   21   18   27   20   23   20   29   22    19
 X22E |    5   19    7    9   13    4   12   11  ---    9    3 |    27   31   30   23   31   25   30   24  ---   27    27
  23  |    8   24    8   13   17    7   14   11   14   19    4 |    30   44   34   30   37   28   37   31   32   26    30
  25  |    8   16    8   13   16    7   14    8   13   11    4 |    31   35   34   33   34   29   37   31   34   31    31
  26  |    5   13    4    9   12    5   12    8   17   12    3 |    23   25   25   21   26   20   26   23   26   21    22
 X27  |   99   31   13   23  ---   21  ---   17  ---  ---   11 |    83   34   37   24  ---   26  ---   25  ---  ---    27
  28  |    9   20    5   11   18    4   14   12   15   14    4 |    27   37   28   26   35   27   32   24   36   24    27
  29  |    4   15    3   10   15    6   14   13   13   26    4 |    29   26   28   31   34   30   30   30   31   29    29
 X30  |    8   20    7   14   15    5  ---   21   17   21    5 |    43   44   44   46   42   43  ---   42   55   58    44
  31  |    6   18    5   16   18    4   22   12   17   17    4 |    17   28   21   25   30   19   29   15   23   21    20
 X32E |   10   21    7   13   17    8   15   18  ---   17    5 |    51   56   53   48   42   48   58   55  ---   55    51
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |    7   20    6   11   16    6   15   11   14   17      |T   29   34   31   30   34   28   33   29   32   28    28
 WRMS |    7   20    6   10   16    6   15   11   13   15      |NE  28   33   29   28   33   26   31   28   31   27    27
 MEDI |    7   18    6   10   16    6   14   12   15   17      |MD  27   34   28   28   34   26   31   28   31   26    27

Table 3.1661.4   GPS week: 1661   Day: 4   MJD: 55875.000                            

        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   17    4   11  ---    5   14   14   11    9    3 |    27   42   35   35  ---   28   44   33   26   31    32
   2  |    6   18    6   12   15    4   15    8   10   18    3 |    24   30   28   30   33   22   30   20   28   17    24
   3  |    9   11    5    9   14    6   11    5   13   17    3 |    19   19   32   22   27   20   24   19   23   19    21
  X4  |   10    9  ---  ---  ---   12  ---   12   19  ---    7 |    35   32  ---  ---  ---   32  ---   34   34  ---    34
   5E |    6   16    6   10   17    6   14    8   10   11    3 |    26   33   29   24   35   25   30   25   28   24    26
   6  |    6    9    4   12   13    6   11    7   12   13    3 |    26   26   33   31   33   26   33   27   25   27    29
   7  |    8   14    6    9   21    4   16    6    8   12    3 |    21   26   21   18   28   16   25   17   17   16    18
   8  |   11   21    6   13   18    7   14   10    8   16    4 |    19   27   22   17   26   16   24   20   18   18    18
   9  |    7   22    6   11   13    7   15   12    9   17    4 |    19   29   19   21   24   16   25   21   23   17    20
  10E |   15   23    8   14   28    7   20   12   32   17    6 |    32   36   33   35   36   28   36   31   44   32    29
  11  |    7   17    5   11   14    6   15   13   15   14    4 |    32   41   36   39   44   31   38   41   27   36    35
  12  |    7   20    6   12   16    6   22   10    9   13    4 |    29   39   32   31   34   28   36   31   28   31    30
  13  |    8   19    5    7   23    4   13    7    7   13    3 |    21   34   24   23   37   22   31   22   23   21    23
  14  |    9   20    8   13   13    4   13   15   11   15    4 |    24   34   26   27   32   25   30   29   27   28    25
  15  |    7   21    6    8   22    5   15    8    9   13    4 |    21   30   22   21   34   20   27   20   24   20    22
  16  |    6   26    6    9   16    4   14    8   15   17    4 |    32   39   30   28   37   28   36   26   32   30    30
  17  |   11   13    4   21   13    7   17   11   14   19    4 |    20   22   25   33   27   20   23   26   24   21    23
  18E |    6   19    7    9   14    4   14   11   10    8    3 |    27   30   28   23   25   26   29   23   24   26    26
  19  |    5   13    4    8   10    5   14   14   12   23    4 |    21   23   25   25   28   22   25   31   22   25    24
  20E |    7   12    6   11   18    4   13    9    9    8    3 |    30   33   34   31   31   30   35   32   27   33    30
  21  |    6   19    6   10   14    6   16    9    9   20    4 |    17   25   19   22   24   17   25   18   14   19    18
  22E |    6   17    7    9   15    5   11   10    7   10    3 |    28   29   29   25   27   26   30   26   27   27    27
  23  |    9   25    6    9   19    5   14   10    9   16    4 |    24   38   27   24   31   23   31   24   24   23    24
  25  |    6   12    7   13   17    4   14    7   13   14    3 |    36   37   33   35   39   33   37   34   35   35    33
  26  |   10   12    5    9   14    5   15    7   11    9    3 |    19   20   19   24   27   15   21   17   20   16    16
 X27  |   15   23   11   17  ---    8  ---   13  ---  ---    7 |    28   27   29   22  ---   17  ---   19  ---  ---    20
  28  |   10   17    4   10   18    4   14    9   11   11    3 |    25   35   28   25   36   25   31   22   26   22    25
  29  |    7   16    4    9   15    5   19   13   15   25    4 |    21   26   23   29   27   23   29   23   24   25    22
  30  |    7   17    6   13   16    4   13   16   12   13    4 |    27   33   28   35   25   28    8   28   30   33    28
  31  |    7   12    4   16   22    5   15   12    6    9    3 |    22   25   24   27   34   19   27   20   23   18    21
  32E |   10   22    8   11   19    6   15   11   28   12    5 |    39   43   43   40   48   40   47   44   51   44    42
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |    8   18    6   11   17    5   15   10   13   15      |T   25   31   27   27   31   24   29   25   26   25    25
 WRMS |    8   18    6   11   16    5   14    9    9   13      |NE  24   30   26   26   31   22   28   24   24   23    24
 MEDI |    7   17    6   11   16    5   14   10   11   13      |MD  25   30   28   25   31   25   30   25   25   25    25

Table 3.1661.5   GPS week: 1661   Day: 5   MJD: 55876.000                            

        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   14    6    6  ---    4   13   14   10   10    3 |    29   42   33   31  ---   30   45   30   28   32    33
   2  |    8   21   10   13   12    3   15    8   12   19    4 |    18   32   25   26   31   22   30   20   17   16    23
   3  |   13   12    3   10   14    6    8   10   13   19    4 |    13   17   42   18   23   16   23   17   19   15    17
   4  |    5   12    6   11   20    5    8    9   12   18    3 |    28   31   31   33   41   32   34   26   28   24    29
   5E |   10   16    9   13   12   11   15   32   14   31    6 |    29   36   32   27   35   29   34   50   23   49    32
   6  |    7   11    5   10   12    5    9   10   16   15    3 |    20   22   23   23   26   23   29   24   29   18    24
   7  |    9   19    7    9   20    4   16    6   11   15    4 |    15   26   17   21   24   15   23   18   21   14    16
   8  |   11   17    7   10   15    7   12    8   11   16    4 |    16   21   17   18   22   15   22   18   20   17    16
   9  |    9   19    9   12   12    5   11   11    9   18    4 |    18   28   21   16   20   17   24   19   21   16    19
  10E |   14   19   12   13   20    6   17   13   33   13    6 |    25   31   28   30   34   26   33   30   40   26    26
  11  |    6   19    6    8   13    6   12   15   10   14    4 |    28   35   27   30   37   27   33   34   27   28    29
  12  |    7   26    7   11   15    4   19    9   12   17    4 |    22   39   30   25   32   28   33   25   30   22    27
  13  |    9   20    8    7   22    4   12    7   11   16    4 |    17   31   21   20   32   19   27   19   23   13    19
  14  |   10   22    5   11   14    8   14   15   12   18    4 |    18   28   23   20   30   18   26   25   20   24    20
  15  |    7   23    6    8   20    5   13    9   10   15    4 |    20   32   23   23   36   20   29   20   21   20    21
  16  |    7   26    6    7   17    5   13    6   14   17    4 |    20   34   22   18   32   21   28   20   26   23    22
  17  |    7   15    6   13   12    7   13   11   11   19    4 |    20   23   26   27   25   26   27   25   27   23    25
  18E |    8   19    7    9   14    4   11    9   10    8    3 |    18   24   20   17   26   18   22   15   17   20    18
  19  |    7   15    5   11   10    5   13   17   13   24    4 |    18   20   19   22   19   22   23   22   27   15    20
  20E |    9   13    8    6   13    4   14   13   11   11    3 |    44   42   43   40   41   42   45   45   43   39    41
  21  |   11   23    6    9   13    5   15   12   10   21    4 |    14   28   18   16   26   15   23   15   12   19    15
  22E |    8   18    8    8   21    4    8    9    9    9    3 |    21   27   24   20   28   21   26   22   21   20    21
  23  |    9   26    8    9   18    4   13    8   14   20    4 |    21   35   24   23   30   22   26   24   24   18    21
  25  |    8   15    8   14   16    4   15   10   11   18    4 |    26   31   33   28   31   28   30   27   32   23    28
  26  |   14   15    6    9   13    6   10    6   11   11    3 |    25   26   23   24   27   21   27   22   25   20    22
 X27  |   24   26   28   18  ---   16   18   13  ---  ---   10 |    20   22   37   15  ---   24   25   17  ---  ---    18
  28  |   10   22    6   12   19    3   12   10   11   12    4 |    24   37   30   25   35   25   30   21   24   24    25
  29  |    7   15    9   11   13    5   16    7   15   36    5 |    23   23   23   24   23   23   25   22   20   27    22
 X30  |    9   14    7   13   12    4  ---   15   12   19    4 |    30   34   32   36   31   31  ---   31   30   36    32
  31  |    6   17    5    9   17    4   15   11    9   12    3 |    15   24   20   15   29   15   25   14   18   13    16
  32E |   12   24    9    8   16    7   16   11   26   11    5 |    49   48   50   47   49   48   55   51   50   52    49
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |    9   19    7   10   16    5   13   12   14   18      |T   22   29   27   24   30   23   29   24   25   23    24
 WRMS |    9   19    7   10   16    5   13    9   12   16      |NE  20   28   25   23   28   22   27   22   23   20    22
 MEDI |    9   19    7   10   14    5   13   10   11   16      |MD  20   31   24   23   30   22   27   22   24   20    22

Table 3.1661.6   GPS week: 1661   Day: 6   MJD: 55877.000                            

        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   17    8   11  ---    4   17   10   11   15    4 |    38   49   46   38  ---   40   58   43   38   39    43
   2  |    7   22   10   17   13    5   16    9   10   18    4 |    23   31   28   32   36   23   34   23   26   22    24
   3  |    9   11  173   14   12    7   12   11   14   23    5 |    21   25   62   24   28   21   27   23   21   20    21
   4  |    6   16    5   11   10    6   11   11   14   19    4 |    42   44   40   42   46   43   39   42   43   33    42
   5E |    8   17    8   12   18    5   16   14    9   24    4 |    32   41   38   36   43   35   41   33   29   33    33
   6  |    6    9   16   19   10    7   10   11   14   17    4 |    29   30   38   31   35   29   32   34   26   26    30
   7  |    9   18    9   12   20    4   19    5    9   19    4 |    24   33   28   29   31   23   30   22   26   19    23
   8  |   10   20    7   13   14    6   16    9   12   23    4 |    24   30   27   23   26   21   28   23   23   21    22
   9  |    8   20    9   13   10    4   15   10    9   22    4 |    29   37   29   24   35   24   36   29   28   23    27
  10E |   17   21   10   17   22    7   17   16   31   11    6 |    36   41   37   42   42   37   44   35   50   38    36
  11  |    7   16    7    9   16    4   14   11   15   19    4 |    46   49   50   47   59   46   51   53   44   45    48
  12  |    9   24    7   14   16    5   20    9   13   19    5 |    36   48   38   34   41   34   43   37   35   32    35
  13  |    9   18   13   11   20    6   15    9    9   18    4 |    25   39   33   30   40   26   36   25   30   22    27
  14  |    8   22    8   13   15    8   14   15    9   26    5 |    28   37   30   27   35   29   34   30   26   32    27
  15  |    5   21    8    9   17    5   15    8   12   17    4 |    27   36   30   29   41   27   37   27   28   30    27
  16  |    6   24   18   11   15    7   16   10    9   15    4 |    35   46   38   34   43   34   41   30   37   33    34
  17  |    8   12    6   21   12    4   20    9   11   23    4 |    30   28   31   39   35   30   30   35   31   32    30
  18E |    9   14    9   10   10    5   12   10   13   12    3 |    30   35   32   30   33   30   34   28   26   32    29
  19  |    6   15   14   12   13    7   12   14   15   27    4 |    27   30   35   30   28   31   31   36   33   27    29
  20E |    8   14    9    9   14    8   16    9   17   11    4 |    65   70   70   69   67   65   68   65   70   66    66
  21  |   10   20    8   11   15    5   17   12   10   22    4 |    21   26   21   25   31   20   24   23   19   25    19
  22E |    6   18   10   11   14    6   11   17   10   17    4 |    35   37   34   31   36   33   36   37   30   35    32
  23  |    9   24   13   10   16    8   16   11   10   25    5 |    34   46   41   34   42   32   41   32   34   35    33
  25  |    8   11    9   14   16    5   17   11   15   18    4 |    42   44   40   42   45   38   45   42   39   37    39
  26  |    8   12    6   11   13    8   10    8   10   12    3 |    21   23   21   21   25   18   22   21   22   21    19
 X27  |   16   21   13   23  ---   19   17   11  ---  ---    7 |    27   34   24   18  ---   24   27   25  ---  ---    22
  28  |   11   19    6   18   19    4   14   13   10   15    4 |    35   44   33   36   38   31   38   26   33   28    31
  29  |    8   16    7   14   14    7   17    9   16   37    5 |    25   27   29   31   32   28   31   30   25   34    26
 X30  |    8   17   13   19   15    6  ---   18    9   27    5 |    33   39   31   35   34   32  ---   34   37   39    32
  31  |    8   18   13   13   19    7   20   12   13   17    5 |    21   30   31   27   34   23   32   20   26   21    22
 X32E |   14   26    6   12  ---    7   15   15   24   16    6 |    54   64   59   57  ---   56   63   64   54   61    59
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |    9   18   34   13   15    6   15   11   13   20      |T   32   38   36   33   37   31   37   33   32   32    31
 WRMS |    8   18   11   12   14    6   15    9   12   19      |NE  29   36   34   31   36   29   35   30   30   29    29
 MEDI |    8   18    9   12   15    6   16   11   11   18      |MD  30   37   33   31   35   30   36   30   30   32    30



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 4.1661   GPS week: 1661   MJD: 55871.0-55877.0

CENT| CLK EPO  |        BRUS       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 2962 |U    7     6    19 |U   19    13    46 |U    7    10    30 |
emr | emr 2965 |U   11    10    34 |U   22    14    56 |     9    13    33 |
esa | esa 2948 |     8     6    24 |U   17    13    45 |     9    13    31 |
gfz | gfz 2938 |U   10     7    22 |U   18    13    52 |U    9    14    37 |
grg | grg 2754 |    30    30    74 |U   32    34    93 |    27    34    58 |
igr | igr 2958 |     7     6    21 |    19    13    47 |     8    12    30 |
igs | igs 2951 |     8     6    23 |    18    12    45 |     8    11    29 |
jpl | jpl 2811 |U   12     9    34 |     8    11    38 |     9    16    35 |
mit | mit 2976 |U   18    21    88 |U   18    13    44 |U   12    14    35 |



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 5.1661.0   GPS week: 1661   Day: 0   MJD: 55871.0

CENT| CLK EPO  |        BRUS       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 2969 |     6     3    16 |    91    40   154 |     6     7    16 |
emr | emr 2968 |    10     7    24 |   105    45   192 |    10    11    19 |
esa | esa 2976 |     6     4    19 |    87    40   150 |     8    10    16 |
gfz | gfz 2966 |     8     6    31 |    88    40   147 |     7     9    15 |
grg | grg 2784 |     9     7    28 |    96    45   167 |     7     9    19 |
igr | igr 2962 |     5     5    18 |    92    41   157 |     7     9    15 |
igs | igs 2976 |     6     4    18 |    88    40   152 |     7     8    15 |
jpl | jpl 2871 |    13    13    36 |    18    23    75 |     9    15    20 |
mit | mit 2976 |     8     4    21 |    86    39   142 |     7     9    17 |

Table 5.1661.1   GPS week: 1661   Day: 1   MJD: 55872.0

CENT| CLK EPO  |        BRUS       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 2962 |     7     7    15 |     7     8    23 |     6     7    15 |
emr | emr 2968 |    11     6    34 |     7     8    29 |     8    12    25 |
esa | esa 2976 |     8     5    18 |     6     7    23 |     8    11    19 |
gfz | gfz 2968 |     8     6    14 |     7     7    24 |     7    10    21 |
grg | grg 2783 |    14     9    36 |     7     9    29 |    13    22    31 |
igr | igr 2969 |     8     5    19 |     7     7    26 |     8    10    17 |
igs | igs 2976 |     7     4    14 |     6     7    24 |     6     8    18 |
jpl | jpl 2863 |    15     7    38 |     6     8    31 |     8    13    21 |
mit | mit 2976 |    21    30    55 |     8     7    22 |     7     8    21 |

Table 5.1661.2   GPS week: 1661   Day: 2   MJD: 55873.0

CENT| CLK EPO  |        BRUS       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 2969 |     8     7    19 |     5     9    24 |     7    11    17 |
emr | emr 2968 |     9    10    27 |     7     9    32 |     8    11    20 |
esa | esa 2976 |     7     7    20 |     4     8    23 |    12    16    17 |
gfz | gfz 2965 |    19    11    24 |     5     8    24 |    12    22    39 |
grg | grg 2784 |    10     8    23 |     5    10    30 |     9    16    21 |
igr | igr 2975 |     8     7    20 |     5     8    25 |    10    14    17 |
igs | igs 2968 |     8     8    19 |     5     7    24 |    10    14    17 |
jpl | jpl 2776 |    11    11    26 |     6     9    32 |     9    17    19 |
mit | mit 2976 |     8     7    19 |     5     8    25 |    11    14    18 |

Table 5.1661.3   GPS week: 1661   Day: 3   MJD: 55874.0

CENT| CLK EPO  |        BRUS       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 2955 |     6     6    22 |     7     6    33 |     8    22   111 |
emr | emr 2958 |     9    11    31 |     7     8    37 |    10    27   103 |
esa | esa 2880 |     8     8    30 |     6     7    32 |     8    26   107 |
gfz | gfz 2868 |    12     9    39 |     7     5    33 |     8    34   119 |
grg | grg 2771 |    12     8    46 |     8     8    36 |    21    22   106 |
igr | igr 2929 |     7     6    25 |     7     6    32 |     8    29   103 |
igs | igs 2961 |     7     7    28 |     7     6    32 |    10    23   107 |
jpl | jpl 2680 |     9     6    50 |     7     7    32 |    10    36   115 |
mit | mit 2976 |     8     8    27 |     8     6    31 |    12    18   113 |

Table 5.1661.4   GPS week: 1661   Day: 4   MJD: 55875.0

CENT| CLK EPO  |        BRUS       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 2963 |     6     5    19 |     7     7    29 |     8    12    18 |
emr | emr 2962 |    14    13    26 |     8     8    33 |    10    11    20 |
esa | esa 2880 |     8     5    31 |     6    10    31 |     8    11    17 |
gfz | gfz 2871 |    10     8    14 |     6     8    28 |    10    11    19 |
grg | grg 2688 |   138   156   315 |    90   148   314 |   114   147   183 |
igr | igr 2925 |     7     6    22 |     6     8    27 |     7     9    15 |
igs | igs 2926 |     8     4    25 |     6     7    27 |     8    10    14 |
jpl | jpl 2776 |    10     7    23 |     6     9    31 |     9    10    19 |
mit | mit 2976 |    49    37   229 |     7     7    31 |    24    24    21 |

Table 5.1661.5   GPS week: 1661   Day: 5   MJD: 55876.0

CENT| CLK EPO  |        BRUS       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 2960 |     8     7    22 |     5    10    29 |     8     8    18 |
emr | emr 2968 |    12     8    37 |     7    10    38 |     9    12    26 |
esa | esa 2976 |     9     6    28 |     5    10    29 |     9    11    21 |
gfz | gfz 2966 |     9     5    18 |     5    10    28 |     9     8    22 |
grg | grg 2784 |    12    10    36 |    13    10    43 |    13    12    27 |
igr | igr 2976 |     9     7    28 |     5    10    31 |     9     9    20 |
igs | igs 2976 |    10     7    32 |     5     9    30 |     8     8    18 |
jpl | jpl 2861 |    12    10    38 |     6    10    34 |    12    12    33 |
mit | mit 2976 |    13    14    49 |     7    10    29 |    14    16    34 |

Table 5.1661.6   GPS week: 1661   Day: 6   MJD: 55877.0

CENT| CLK EPO  |        BRUS       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 2959 |     8     5    20 |     9    12    29 |     6     6    18 |
emr | emr 2967 |    15    14    61 |    10    12    30 |     8     8    21 |
esa | esa 2976 |     8     4    21 |     7    11    30 |     8     6    21 |
gfz | gfz 2968 |     7     5    16 |    10    12    79 |     9     8    21 |
grg | grg 2688 |    13     7    38 |     9     9    33 |     9    12    22 |
igr | igr 2976 |     7     5    18 |     8    11    28 |     7     7    19 |
igs | igs 2878 |    10     5    26 |     8    11    27 |     7     7    18 |
jpl | jpl 2854 |    13     8    28 |     8    12    28 |     7     7    18 |
mit | mit 2976 |    18    47   212 |     8    11    28 |     8     7    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 6.1661   GPS week: 1661   MJD: 55871.500-55877.500

                                                         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 |       8      -9       3     176      3 |      -4     10
            |      18      12     120     103      5 |       1
emr   uuuuu |     -10      13     -13     -13     -6 |      39     40
            |      22      21      55      81      7 |       2
esa   uuuuu |     -25     -31      34      -7     -3 |      -8     11
            |       5      10      59      78      6 |       1
gfz   uuuuu |     -29      33     -73     -40     -1 |       2     10
            |      12      19      68      70      4 |       2
grg   uuuux |      29      -9      91     114     76 |     -79    110
            |      14      10      55      43     26 |      19
igr   xxxxx |     -39      28       7     114     -2 |      -2      9
            |      19      20      81      47      6 |       1
irf   xxxxx |     -30      17      14     -11     -5 |      -1      9
            |       8       4      28      28      4 |       2
jpl   uuuuu |      68     -59      23     182      2 |      27     28
            |      44      13     129      66     11 |       1
mit   uuuuu |     -47      -3     -79     -79     -5 |       5     12
            |      21      16      87      57      8 |       3
ngs   uuuuu |      29      87     101    -109      2 |      -1      7
            |      73      54      85     152      3 |       2
sio   uuuuu |      76      -3     -46      19      2 |      13     19
            |      22      19     105      73      6 |       4


Table 7.1661.0   GPS week: 1661   Day: 0   MJD: 55871.500

                                                         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 |      -6     -21    -103     226     -2 |      -3      7
emr   uuuuu |       5      38     -36     115    -17 |      44     44
esa   uuuuu |     -17     -26      50     -44     -1 |      -7      9
gfz   uuuuu |     -12      51    -122      20      6 |       1      8
grg   uuuux |      31       0     -10      91    108 |    -108    127
igr   xxxxx |     -21      14       2      90      0 |      -1      6
irf   xxxxx |     -45      11      40     -11     -7 |       2      7
jpl   uuuuu |     117     -82      16     199      5 |      29     30
mit   uuuuu |     -87     -26      78     -43    -14 |      10     13
ngs   uuuuu |      -1      77     -42    -282     -1 |       2      8
sio   uuuuu |      38     -25     115      39      8 |       9     17

Table 7.1661.1   GPS week: 1661   Day: 1   MJD: 55872.500

                                                         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 |      43      -7     186     252     -4 |      -4      8
emr   uuuuu |     -43     -25      89     -49    -11 |      40     41
esa   uuuuu |     -30     -19      63    -147      1 |      -7      9
gfz   uuuuu |     -21      31    -135     -14      2 |       1      8
grg   uuuux |      20     -19     108     126     99 |     -99    124
igr   xxxxx |     -20       9      91      29     -5 |      -2      6
irf   xxxxx |     -25      19      -7      10     -8 |       0      6
jpl   uuuuu |      98     -58      52     164    -12 |      28     29
mit   uuuuu |     -37       2    -102     -24    -14 |       8     11
ngs   uuuuu |       1      68      21      66      2 |      -1      5
sio   uuuuu |      86       5     -84      85      3 |      10     17

Table 7.1661.2   GPS week: 1661   Day: 2   MJD: 55873.500

                                                         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 |      -6     -23    -133     286     -1 |      -5      8
emr   uuuuu |       3      23      16      32     -9 |      39     40
esa   uuuuu |     -30     -40     -30     -24     -1 |      -7      9
gfz   uuuuu |     -19      50     -20     -29     -5 |       2      8
grg   uuuux |      15     -25      95      61    103 |     -84    114
igr   xxxxx |     -58      30     121     157     -7 |      -2      6
irf   xxxxx |     -23      18       3      27     -8 |      -1      7
jpl   uuuuu |     114     -38     131     216     17 |      26     27
mit   uuuuu |     -25      12    -154       1    -12 |       5     10
ngs   uuuuu |     -81      52     173    -321      4 |      -1      4
sio   uuuuu |     101       3    -110     127      2 |      11     17

Table 7.1661.3   GPS week: 1661   Day: 3   MJD: 55874.500

                                                         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 |      16      11     -69     -11      7 |      -6     10
emr   uuuuu |     -37      -1     -20    -147      5 |      36     38
esa   uuuuu |     -27     -25      -6     -11     -7 |      -9     12
gfz   uuuuu |     -47      -2      49      20     -1 |       1     10
grg   uuuux |      30      -7     161     111     51 |     -67    102
igr   xxxxx |     -67      59      18     163     -8 |      -4     10
irf   xxxxx |     -36      17     -19     -39      2 |      -4     11
jpl   uuuuu |      42     -64     121     254     -5 |      26     27
mit   uuuuu |     -48     -14    -170    -104      4 |       2     12
ngs   uuuuu |     131     205     118     -82      0 |      -3      6
sio   uuuuu |      68     -16    -188     -40      9 |      12     17

Table 7.1661.4   GPS week: 1661   Day: 4   MJD: 55875.500

                                                         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 |       3     -13       5     228      7 |      -5     11
emr   uuuuu |      -1      11      -4      -3     -3 |      37     39
esa   uuuuu |     -17     -21     -40      52     -3 |      -9     12
gfz   uuuuu |     -37      42     -57    -158      1 |       2     10
grg   uuuux |      59       0     114     131     60 |     -67    101
igr   xxxxx |     -21      50    -116     115      2 |      -4     10
irf   xxxxx |     -29      15      18     -52     -5 |      -3     11
jpl   uuuuu |      32     -63     117     240     -9 |      25     26
mit   uuuuu |     -57     -14     -55    -155     -5 |       2     12
ngs   uuuuu |      65      90      87      -7      2 |      -3      6
sio   uuuuu |      59     -17       7       1     -2 |      15     19

Table 7.1661.5   GPS week: 1661   Day: 5   MJD: 55876.500

                                                         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 |      -5      -5      -4     113      2 |      -2     13
emr   uuuuu |     -11      29     -56       7     -1 |      39     41
esa   uuuuu |     -27     -45     101      93    -15 |      -7     12
gfz   uuuuu |     -33      40    -106       0     -6 |       5     12
grg   uuuux |      25     -10     114      83     62 |     -62    101
igr   xxxxx |     -47      31     -46     143     -6 |      -2     11
irf   xxxxx |     -27      23       0       6     -6 |      -1     11
jpl   uuuuu |       4     -52     -47      64      9 |      27     28
mit   uuuuu |     -41      19    -130    -124      2 |       4     14
ngs   uuuuu |      99      46     177    -164      9 |      -1      8
sio   uuuuu |      86      31    -105      10     -5 |      19     22

Table 7.1661.6   GPS week: 1661   Day: 6   MJD: 55877.500

                                                         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      -3     138     138      8 |      -2     13
emr   uuuuu |      14      13     -82     -48     -3 |      38     40
esa   uuuuu |     -25     -40      99      33      2 |      -8     15
gfz   uuuuu |     -36      22    -119    -116     -2 |       4     13
grg   uuuux |      24       1      53     194     48 |     -63    101
igr   xxxxx |     -37       5     -22     102      7 |      -3     13
irf   xxxxx |     -27      15      61     -19     -1 |      -2     13
jpl   uuuuu |      69     -58    -229     139     10 |      28     28
mit   uuuuu |     -34       3     -22    -101      2 |       4     14
ngs   uuuuu |     -12      68     171      28     -1 |      -1      8
sio   uuuuu |      91       0      46     -89     -5 |      18     22



More information about the IGSREPORT mailing list