[IGSREPORT-19357] Wk 1616 IGS Final Orbits

Jim Ray igs.acc at noaa.gov
Thu Jan 13 05:38:58 PST 2011


Author:  AC Coordinator / NOAA NGS

sum-file Version 2.0
Final IGS Orbit Combination - Week 1616   (Dec 26, 2010 - Jan 01, 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:

igs1616[0-6].sp3  IGS GPS ephemeris files in SP3 format.
igs1616[0-6].clk  IGS GPS satellite and station clocks in clock RINEX format.
igs1616[0-6].cls  IGS GPS clock combination summary report.
igs16167.erp      Earth Rotation Parameters (ERP) and their rates as well as
                  Universal Time (UT1-UTC) and Length Of Day (LOD) associated 
                  with IGS ephemerides.
igs16167.sum      Complete report.

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

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

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

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

 4. The following clock solutions were excluded from the combination because they
    were biasing the combined clock solutions (clock shifts/outliers) but were
    kept for the RMS computation.  Duplicate entries can arise due to separate
    combination runs for the 30-s clocks ACs (listed first) and the 5-min clock
    ACs (listed second).
    
               Day | Centre | PRN/STA list
               ----+--------+---------------
                0  |  COD   | 28 28 HARB DGAR HARB XMIS
                0  |  EMR   | 30 30 WTZR WTZR
                0  |  ESA   | CAS1 SUTH
                0  |  GFZ   | 22 DGAR HARB MAW1 RAMO
                0  |  GRG   | DGAR
                0  |  JPL   | 30 ALRT MCM4
                0  |  MIT   | 30 30
                1  |  EMR   | 30 30 WTZR WTZR
                1  |  GFZ   | 22 DAV1 ISPA KERG MDVJ THU3
                1  |  JPL   | 30 DGAR
                1  |  MIT   | 30 30 DAV1 DAV1
                2  |  COD   | USNO
                2  |  EMR   | 30 30 WTZR WTZR
                2  |  ESA   | TIXI SUTH
                2  |  GFZ   | 4 22 AUCK DAV1 MAW1 MDVJ
                2  |  GRG   | AMC2 DGAR GUAT
                2  |  JPL   | 22 30 MAC1 POTS UNSA
                2  |  MIT   | 3 10 11 15 19 23 30 32 3 10 11 15 19 23 24 30 32
                2  |  MIT   | DAV1 KOUR MAS1 MAW1 DAV1 FLIN MAW1
                3  |  COD   | MCM4 DGAR MCM4
                3  |  EMR   | 30 30 HARB WTZR HARB WTZR
                3  |  ESA   | KERG SUTH UNSA
                3  |  GFZ   | 22 ASPA BOR1 BRFT KIRU MDVJ
                3  |  GRG   | DGAR GUAT SANT
                3  |  JPL   | 30 HARB
                3  |  MIT   | 30 30 FLIN
                4  |  ALL   | 1
                4  |  COD   | DGAR HARB INVK XMIS
                4  |  EMR   | 30 30 WTZR KERG WTZR
                4  |  ESA   | SUTH UNSA
                4  |  GFZ   | 2 ALGO CAS1 DGAR NICO
                4  |  GRG   | DGAR USN3
                4  |  JPL   | 30 POTS
                4  |  MIT   | 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20
                4  |  MIT   | 21 22 23 24 25 26 27 28 29 30 31 32 2 3 4 5 6 7 8
                4  |  MIT   | 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25
                4  |  MIT   | 26 27 28 29 30 31 32
                5  |  COD   | DAV1 DGAR SUTH XMIS
                5  |  EMR   | 30 WTZR WTZR
                5  |  ESA   | DAV1 UNSA
                5  |  GFZ   | DGAR IRKT KOUC MDVJ
                5  |  GRG   | DGAR
                5  |  JPL   | 22 30 MCM4
                5  |  MIT   | 7 11 23 24 26 30 32 3 7 8 11 23 24 26 30 31 32 DAV1
                5  |  MIT   | SANT
                6  |  COD   | DAV1
                6  |  EMR   | WTZR WTZR
                6  |  ESA   | MAW1 KERG MAW1 UNSA
                6  |  GFZ   | DARW HARB MDVJ ZWE2
                6  |  GRG   | ALRT DGAR SANT
                6  |  JPL   | HARB
                6  |  MIT   | 3 4 6 11 14 19 22 24 30 3 4 6 11 14 19 24 30 DAV1
                6  |  MIT   | WROC WTZR DAV1 GRAZ SANT WROC WTZR

 5. The following table lists all maneuvered satellites for this week.
    The solutions from COD and ESA, which modeled the maneuver, are used
    that day for combination. An associated accuracy code of 0 (unknown) 
    is given if only one AC is left (no redundancy). For the long arc  
    evaluation the arc is split into two parts at the given maneuver epoch.
    
               PRN |    Date    | Ref. NANU
               ----+------------+----------
               G24 | 2010_12_28 | 2010157 
               G24 | 2010_12_29 | 2010157 

 6. 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
               ----+--------+---------------
                0  |  MIT   |  30
                2  |  MIT   |  30
                4  |  COD   |   1

 7. Starting on 5-Nov-2006 (GPS Week 1400, day 0, MJD 54044) all IGS products,
    including the IGS combined orbits, are based on the IGS realization of the
    ITRF2005 reference frame (IGS05).   For more information see IGSMAIL #5447.

 8. Small rotations were applied to all the AC orbit and ERP values in order
    to align them to the IGS05 frame. These rotations were estimated in the IGS
    SINEX combination process, performed by the IGS Reference Frame Coordinator
    at the Institut Geographique National (IGN), and are based on the common
    stations between the individual AC SINEX solutions and the IGS05.snx SINEX
    frame. The estimated 7 transformations, from which only the 3 rotations are
    applied to the orbit and ERP values, are:
    
            |    DX     DY     DZ      RX     RY     RZ     SCL
     Centre |   [mm]   [mm]   [mm]   [uas]  [uas]  [uas]   [ppb]
     -------+---------------------------------------------------
       COD  |     .0    1.3     .5     -26     10    -27     .23
       EMR  |    1.0    3.9    2.3      25    -37    -11     .35
       ESA  |    5.6    8.3    1.8     104    -37    -12     .22
       GFZ  |    -.4    1.5     .5       9      7    -33     .19
       GRG  |    4.2   14.5  -14.4      59     60    -98     .32
       JPL  |    4.3    7.6    4.6      77    -75     32    -.05
       MIT  |   -2.0    7.4    4.5      35    -34    -33     .28
       NGS  |   -1.0    3.8     .8      62     24     -8     .17
       SIO  |    1.1    8.7   -5.5     146    -44     -7     .43


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

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

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

    
ORBIT COMBINATION AND EVALUATION STATISTICS:                                    
--------------------------------------------                                    
      
Most combination statistics are with respect to the combined orbits and
consist of five parts. The first, Table 1, summarizes all statistics for
the week.  It contains means and standard deviations over the week of
satellite ephemeris and clock correction transformation parameters for
each centre (table 1.1616.a). It also displays the computed satellite
position sigmas for the combined orbits (table 1.1616.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 2.1616.[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 3.1616.[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 5.1616.0-6).

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 1616 summary.                       (Dec 26, 2010 - Jan 01, 2011)

Table 1.1616.a   GPS week: 1616   MJD: 55556.000-55562.000

         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  232|    0     0     3   126   -22   -22  -.21    9    7 |    -448     -77     15     75
        |    1     0     1     6    16    29   .03           |     546     889
emr   99|    0     0     6     9    80     7   .40   19   19 |    -885     284     15     95
        |    1     1     1    31    37    16   .03           |    1401    1327
esa  133|    0     0    -2   -61    38     9   .21    8    7 |    -520     -28     15    109
        |    0     0     1    13    13    28   .02           |    1272    1996
gfz  190|   -1     0    -3    52   -46     2  -.22   11   10 |     -95     227     21     97
        |    0     0     1    36    83    16   .05           |     179     359
grg  135|    1     0   -14   -37  -138   -34   .66   17   16 |      20      28     52    233
        |    0     1     1    15    17    19   .05           |     373     660
igr  n/a|    0     0     1    61    10    20  -.04    5    5 |   -2243      80     16     84
        |    0     0     1    20    16    29   .03           |    1227    1214
jpl  125|    0     0     4   -81   148    16   .46   18   16 |    1687     354     17    113
        |    1     0     2    22    17    65   .04           |    1246    1216
mit  280|    0     1     0    22     2    15  -.41   18   13 |    -107     178     39    182
        |    0     1     0    25    28    11   .04           |     327     691
ngs  215|    0     0     1   -46   -45     5  -.20   12    9 |    -547      90   2064   3769
        |    0     0     1    13    48    16   .04           |     450     722
sio  253|    0     1     2  -214    57   -40  -.06   22   21 |     ---     ---    ---    ---
        |    1     0     0    28    31    11   .05           |     ---     ---


Table 1.1616.b   GPS week : 1616   MJD: 55556.000-55562.000   

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

              Day of GPS week
 PRN  |    0    1    2    3    4    5    6 |  Remarks
------+------------------------------------+------------------------------------------
   1  |    0    0    0    0   34    0    0 |
   2  |    5    4    4    4    6    4    6 |
   3  |    4    3    4    4    4    4    4 |
   4  |    5    4    6    4    4    4    4 |
   5  |    5    4    5    5    5    4    5 |
   6  |    4    3    4    4    3    3    4 |
   7  |    5    5    5    5    5    5    5 |
   8  |    4    4    4    4    4    4    4 |
   9  |    4    4    4    4    4    4    4 |
  10  |    5    4    4    4    4    4    4 |
  11  |    4    4    4    5    5    5    5 |
  12  |    5    5    4    5    5    5    6 |
  13  |    4    4    5    5    4    4    5 |
  14  |    5    4    4    4    4    4    7 |
  15  |    5    5    5    5    5    5    5 |
  16  |    5    5    5    5    5    5    6 |
  17  |    5    5    5    5    5    5    5 |
  18  |    4    4    4    4    4    4    5 |
  19  |    5    5    5    5    5    5    5 |
  20  |    5    4    4    4    4    5    5 |
  21  |    4    3    4    4    4    4    4 |
  22  |    4    5    4    4    4    4    4 |
  23  |    4    4    5    5    5    5    5 |
  24  |    5    4    4    0    3    4    4 |
  25  |    6    6    7    6    5    5    5 |
  26  |    5    4    4    5    5    5    5 |
  27  |    4    4    4    4    5    4    4 |
  28  |    5    5    4    4    4    4    4 |
  29  |    6    5    6    6    5    6    5 |
  30  |    9   12    9   10   10    9    8 |
  31  |    5    5    5    5    5    5    5 |
  32  |    5    4    4    4    4    4    4 |



Table 2: Daily transformation of each centre to the combined IGS orbit and
         clocks for each day of the week. The transformation displayed is the
         sum of a priori and estimated transformations.
         WRMS - RMS weighted by the centres SP3 header accuracy codes.
         STA  - Number of stations in the daily solutions.
   
Table 2.1616.0   GPS week: 1616   Day: 0   MJD: 55556.000                            

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  232|   -1     0     2   128   -26   -56  -.20    9    8 |    -939     613     19     62
        |                     21    13                       |
emr   99|    0    -2     6    60    41    13   .41   18   18 |    -824    1125     17     96
        |                    -37    11                       |
esa  133|    1    -1    -3   -49    39    44   .19    8    8 |     227   -1687     14     98
        |                    -58   -15                       |
gfz  190|   -1     0    -5   -12  -108    30  -.20   12   12 |    -160     204     22     98
        |                    -94     0                       |
grg  135|    1     0   -17   -26  -126    -3   .74   17   17 |    -474    1169     51    266
        |                    -53   -86                       |
igr  n/a|   -1     0     0    89    -7     5  -.03    5    5 |   -1577    1009     16     91
        |                    -83    46                       |
jpl  125|    1     0     8   -36   113   -58   .50   17   16 |    1550    1305     18    107
        |                    -76   -20                       |
mit  280|    0     0     0   -27    31    18  -.34   21   11 |    -537     994     21    151
        |                     10    34                       |
ngs  215|    0     1     2   -22   -10     4  -.20   14   10 |    -949     600   2031   4154
        |                    -25   -21                       |
sio  253|   -2     1     1  -258    72   -31   .01   24   22 |     ---     ---    ---    ---
        |                     56    62                       |

Table 2.1616.1   GPS week: 1616   Day: 1   MJD: 55557.000                            

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  232|    0     0     4   124     2   -20  -.18    9    7 |   -1040     868     15     80
        |                     40   -15                       |
emr   99|    0    -1     5    25   135    -5   .35   19   19 |    -762    -669     16     76
        |                    -16   -64                       |
esa  133|    1     0     0   -59    57    18   .18    6    6 |   -1156    1945     16    113
        |                    -43   -22                       |
gfz  190|   -1     0    -4    62  -161    12  -.19   10    8 |    -298     399     20     95
        |                    -55   -14                       |
grg  135|    2     0   -15   -52  -140   -35   .59   18   16 |    -278     177     58    287
        |                     17   -60                       |
igr  n/a|    0    -1     1    71    19    12  -.05    4    4 |   -1531    -730     15     78
        |                    -29    -7                       |
jpl  125|    2    -2     7   -90   167   -43   .50   18   17 |    1808    -394     17    107
        |                    -43   -38                       |
mit  280|    0     1    -1    22    -6    -4  -.39   18   10 |    -217     270     25    164
        |                    -12    36                       |
ngs  215|    0     0     2   -54     8    18  -.25   13   10 |   -1053     865   2463   3752
        |                     22    12                       |
sio  253|    0     2     0  -222    15   -56  -.06   23   20 |     ---     ---    ---    ---
        |                     55    78                       |

Table 2.1616.2   GPS week: 1616   Day: 2   MJD: 55558.000                            

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  232|    0     0     2   114   -13   -28  -.19    8    7 |     336   -1004     13     66
        |                     20   -22                       |
emr   99|    2     0     6   -29   124    12   .38   20   20 |    -893    -956     14     92
        |                     59   -76                       |
esa  133|    0     0     0   -60    51    12   .21    7    7 |    1758   -1137     14    108
        |                     -2   -18                       |
gfz  190|    0     0    -4    69   -97     7  -.18   11   12 |     101    -262     20    106
        |                    -38   -33                       |
grg  135|    1     0   -14   -44  -130   -24   .62   17   18 |     637    -516     56    219
        |                     25   -22                       |
igr  n/a|    0     0     2    61    37    23  -.06    5    5 |   -1687   -1469     17     84
        |                    -35    -3                       |
jpl  125|   -1     0     2  -102   153    11   .42   19   18 |    1976   -1082     18    116
        |                      3   -29                       |
mit  280|    1     0     0    32   -49    10  -.42   22   15 |     438    -552     26    158
        |                    -22    43                       |
ngs  215|   -1     0     0   -58     9    14  -.25   13    9 |     -76    -354   1859   3276
        |                    -70   -64                       |
sio  253|    0     0     2  -199    16   -27   .01   22   20 |     ---     ---    ---    ---
        |                     37    57                       |

Table 2.1616.3   GPS week: 1616   Day: 3   MJD: 55559.000                            

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  232|    0     0     5   133   -31   -15  -.21    8    8 |    -282    -735     14     64
        |                     19    -7                       |
emr   99|    2     0     4    -6    75    20   .39   19   19 |   -3049     936     15    119
        |                     52   -53                       |
esa  133|    1     0    -1   -64    41    11   .24    8    8 |    -443    -644     18    120
        |                      8   -34                       |
gfz  190|   -2    -1     0    52    27     3  -.17    9    9 |     -63     129     22    105
        |                    -53     6                       |
grg  135|    1     2   -14   -10  -163   -24   .63   17   18 |     150    -938     50    214
        |                     20    66                       |
igr  n/a|    0     0     0    53   -10     1  -.03    5    5 |   -4299     588     17     79
        |                    -45    24                       |
jpl  125|   -1     0     0   -88   151   -26   .44   18   17 |    -263     887     19    135
        |                     17   -60                       |
mit  280|    0     1    -1    34     7    21  -.44   20   15 |     108    -841     25    130
        |                    -20    29                       |
ngs  215|    0     0     0   -48   -95   -11  -.20   11    8 |    -557     -51   1792   3337
        |                    -52    31                       |
sio  253|    0     3     1  -201    59   -35  -.09   21   21 |     ---     ---    ---    ---
        |                     50    55                       |

Table 2.1616.4   GPS week: 1616   Day: 4   MJD: 55560.000                            

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  232|    1     0     5   132   -51   -24  -.24    9    8 |    -981     869     15     84
        |                     44    10                       |
emr   99|    2     0     8   -20    54    30   .38   19   19 |   -2002    1970     14     98
        |                     32   -25                       |
esa  133|    0     0    -3   -56    20     7   .21    8    8 |   -2171    3001     20    101
        |                      3     1                       |
gfz  190|    0     0    -2    98    79   -14  -.26   11   10 |    -349     774     20     92
        |                    -63   -22                       |
grg  135|    2     0   -11   -54  -162   -40   .70   16   14 |    -217     229     50    198
        |                     50    38                       |
igr  n/a|    0    -1     0    57     4     2  -.08    5    5 |   -3576    1539     16     71
        |                    -39    -7                       |
jpl  125|   -1     0     6   -92   141    30   .43   18   17 |     676    1885     16     98
        |                     30   -23                       |
mit  280|    0     0     0    32    26    22  -.44   17   14 |    -256     638    124    345
        |                    -29    22                       |
ngs  215|    0     0     0   -57  -105    -4  -.19   11    8 |    -960     787   1904   3541
        |                      4    65                       |
sio  253|    1     2     1  -202    87   -33  -.10   21   21 |     ---     ---    ---    ---
        |                     44    46                       |

Table 2.1616.5   GPS week: 1616   Day: 5   MJD: 55561.000                            

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  232|    0     0     2   127   -18   -45  -.21    9    8 |    -285       8     16     84
        |                     18    -6                       |
emr   99|    0    -2     6     5    47    -9   .46   19   19 |     -50    1148     15     99
        |                     10    -8                       |
esa  133|    0     0    -3   -51    31    21   .21    8    8 |    -433     771     15    127
        |                     -2    32                       |
gfz  190|   -1    -1    -2    77   -23   -13  -.27    9    9 |      37     485     23     90
        |                    -70     3                       |
grg  135|    3     2   -15   -37  -122   -60   .67   19   17 |     100     150     57    234
        |                     24    29                       |
igr  n/a|    0    -1     2    74     7    11   .03    5    5 |   -2114     910     18     97
        |                    -53   -24                       |
jpl  125|   -1     0     3   -95   151    80   .51   17   16 |    2415    1030     19    113
        |                    -10   -10                       |
mit  280|    1     2     0     7    22     8  -.42   16   13 |    -342     779     31    168
        |                    -33    13                       |
ngs  215|    0     0     3   -49   -74    30  -.12   10    7 |    -255     -62   2204   3863
        |                    -61    27                       |
sio  253|    2     2     2  -240    92   -54  -.11   22   19 |     ---     ---    ---    ---
        |                     61    45                       |

Table 2.1616.6   GPS week: 1616   Day: 6   MJD: 55562.000                            

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  232|    1     0     2   127   -18    35  -.26   10    7 |      50   -1164     19     89
        |                     39   -40                       |
emr   99|   -2     0     8    31    81   -12   .41   19   19 |    1381   -1563     18     89
        |                    -16   -44                       |
esa  133|    1     0    -1   -89    25   -47   .21    8    8 |   -1427   -2446     14    102
        |                     12    18                       |
gfz  190|    0    -1    -2    22   -44   -10  -.28   12   12 |      67    -136     23     99
        |                     11    21                       |
grg  135|    0     2   -14   -33  -123   -53   .65   16   14 |     225     -70     45    218
        |                     60    -4                       |
igr  n/a|    0     0     2    23    22    86  -.03    7    5 |    -919   -1284     19     89
        |                      1   -29                       |
jpl  125|    0     0     4   -68   162   119   .42   17   16 |    3651   -1151     18    120
        |                     40    -7                       |
mit  280|    0     2    -1    53   -11    29  -.44   16   14 |      55     -42     26    159
        |                    -49    26                       |
ngs  215|   -1     0     1   -32   -52   -14  -.21   12   10 |      20   -1154   2197   4462
        |                    102   -25                       |
sio  253|    1     1     3  -175    56   -43  -.08   23   21 |     ---     ---    ---    ---
        |                     28    48                       |

       
       
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 3.1616.0   GPS week: 1616   Day: 0   MJD: 55556.000                            

        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
------+--------------------------------------------------------+---------------------------------------------------------
  X1E |    9  ---  ---  ---  ---  162  ---  ---  ---  ---    0 |    44  ---  ---  ---  ---  170  ---  ---  ---  ---    40
   2  |    6   12    7   20   15    5   15   12   11   35    4 |    41   44   46   51   46   42   42   41   42   45    42
   3  |    8   14    6   10   18    7   11   13    9   18    3 |    14   24   16   20   30   13   24   17   16   25    15
   4  |    6   11    7   18   13    3   11   17    9   39    5 |    42   45   47   50   53   43   44   41   41   34    42
   5  |    6   23    8   10   20    5   19   10   13   16    4 |    19   30   15   15   33   15   26   17   18   20    15
   6  |    7   13    9   10   15    6   11   10    8   18    3 |    14   24   21   20   30   15   23   16   14   27    16
   7  |   16   22    9    7   18    8   19   11   10   23    5 |    18   33   25   24   31   19   27   20   17   25    19
   8  |    6   13    6    6   12    5   13   14    8   19    3 |    28   29   29   30   33   22   29   25   24   31    26
   9  |    7   13    8   13   16    5   13    9   11   18    3 |    17   19   19   21   21   18   17   18   18   23    16
  10  |    8   15    8   11   15    4   12   16   11   27    4 |    17   25   23   27   27   19   27   19   20   34    19
  11  |    7   14    7    9   15    4   12   11   12   36    4 |    42   48   43   44   58   42   44   45   44   57    43
  12E |    9   21    9   15   19    5   27   15   12   17    5 |    18   24   25   30   23   23   26   22   24   23    20
  13  |    5   17    9    5   22    4   17    8   13   14    4 |    25   33   28   27   46   23   32   27   22   26    25
  14  |    9   23    9   12   17    6   17    9   11   19    4 |    25   35   27   25   31   25   33   28   23   27    24
  15  |   15   26    9   13   14    6   19   13   13   14    5 |   102  100  102   97  102   99  102  100   97  100    99
  16E |    8   20   10    8   26    8   26   12   12   16    5 |    17   27   24   25   38   21   30   21   22   20    20
  17  |    8   20    9   20   17    3   19   12   14   28    5 |    24   36   27   30   32   25   34   26   24   24    24
  18  |    7   21    6    7   19    3   21   11   10   15    4 |    23   34   19   19   28   22   34   21   20   25    19
  19  |    6   20   10   10   14    6   22   12    9   36    5 |    25   35   25   26   33   22   37   21   24   29    23
  20  |    6   20    9   14   23    4   20   10   14   24    5 |    20   28   17   15   25   15   27   16   20   19    15
  21  |    8   12    5    9    9    5   12    8   10   28    3 |    36   42   40   41   44   39   41   40   40   38    38
  22  |    7   15    7    8   18    6   17   11    8   16    4 |    20   26   18   19   32   19   29   19   16   20    16
  23  |    5   21    7    7   22    6   17    9    8   16    4 |    18   27   17   16   26   13   21   16   16   21    14
  24  |    8   11    8   13   17    4    8   11   11   37    4 |    17   15   12   14   13   11    9   13    9   10    11
 X25E |    9   25   12   10   18    5  ---   22   13  ---    6 |    16   29   20   20   24   17  ---   22   17  ---    15
  26  |   10   16    8   15   11    4   12   11   14   23    4 |    19   26   23   27   24   19   24   23   21   30    20
  27  |    7   15    8   11   14    3   10    8   11   27    4 |    16   23   22   20   19   19   15   19   17   34    16
  28E |    7   16    6   12   18    6   23   13   12   20    4 |    20   25   21   25   27   20   29   22   22   26    20
 X29  |   13   25   12   11   15    5   21   17   11  ---    5 |    25   33   24   24   24   22   32   26   21  ---    21
  30E |   18   24   12   15   15    7   20   97   47   22    9 |    28   36   30   35   38   29   35   96   62   36    29
  31  |    7   20   10   10   19    6   19   11   11   22    4 |    15   28   23   18   33   18   29   21   20   21    18
  32  |   11   19    8   13   20    6   18   14   13   16    5 |    17   24   19   19   21   15   25   21   18   15    15
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |    9   18    8   12   17    5   17   21   14   24      |T   25   32   27   28   33   29   31   28   26   29    24
 WRMS |    8   18    8   12   16    5   16   11   10   22      |NE  23   30   25   26   31   22   29   24   22   27    22
 MEDI |    7   19    8   11   17    5   17   11   11   20      |MD  20   29   23   25   31   20   29   21   21   26    20

Table 3.1616.1   GPS week: 1616   Day: 1   MJD: 55557.000                            

        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
------+--------------------------------------------------------+---------------------------------------------------------
  X1E |    8  ---  ---  ---  ---  359  ---  ---  ---  ---    0 |    64  ---  ---  ---  ---  364  ---  ---  ---  ---    59
   2  |    7   15    4   10   13    4   15   10    9   33    4 |    21   24   25   29   27   23   27   18   23   30    23
   3  |    5   17    5    6   16    4    9    9    8   15    3 |    17   23   17   18   21   17   24   17   19   23    17
   4  |    8   13    7   13   14    5    9   15    8   34    4 |    31   30   33   36   42   33   34   26   33   23    30
   5  |    6   22    6    9   19    4   21   10    8   18    4 |    14   30   17   17   30   14   29   15   17   18    15
   6  |    5   18    3    4   14    4    9    9    9   17    3 |    17   27   18   18   25   17   24   15   20   27    17
   7  |   13   22    7    7   22    4   21   10   11   23    4 |    18   30   20   23   30   18   29   18   19   30    17
   8  |    6   14    5    7   18    5   13   11    8   18    3 |    19   23   20   19   27   18   25   22   18   30    19
   9  |    8   15    4    8   11    4   12   11   12   17    3 |    12   17   17   19   21   15   20   16   19   24    14
  10  |    6   15    5    6   14    3   12   13    9   27    3 |    15   22   19   20   21   17   24   16   18   35    17
  11  |    6   16    6    7   13    4   13   10    9   38    4 |    24   34   24   28   38   25   31   28   27   46    25
  12E |    8   24    8   10   18    5   30   17   11   15    5 |    17   25   20   23   24   17   26   20   22   19    18
  13  |    5   21    5    4   29    4   21    8   10   16    4 |    17   27   17   19   39   17   27   19   21   19    18
  14  |    6   25    5   12   21    4   18    9   10   16    4 |    22   31   25   22   35   22   33   23   24   25    23
  15E |    9   21    8   11   19    3   19   13   12   30    5 |    51   58   57   53   58   53   57   54   54   52    53
  16E |    8   22    6    8   18    2   27   12   12   15    4 |    16   25   18   20   22   19   28   23   25   22    18
  17  |   10   19   10   11   13    4   21   12    8   28    4 |    19   24   19   20   29   16   30   19   16   23    16
  18  |    6   20    6    5   17    4   22   10   13   14    4 |    19   29   19   17   26   18   31   19   18   20    18
  19  |    6   21    6    8   13    3   23   10    8   32    4 |    20   31   19   17   25   18   33   17   18   21    17
  20  |    7   19    6    9   20    7   18    8   15   21    4 |    16   25   13   15   23   15   25   14   17   16    13
  21  |    5   13    5    8   10    3   14    8   10   24    3 |    19   25   23   23   24   21   26   21   21   21    20
  22  |    7   19    5   22   22    7   21   13   13   15    5 |    20   28   22   31   32   20   31   22   19   20    21
  23  |    6   25    5    8   24    3   20    8   12   15    4 |    15   28   14   15   25   13   23   15   14   18    13
  24  |    6    9    4   11   14    3    9    8    9   35    3 |     9    9    7   13    7    8   10   11    9   15     7
 X25E |   14   26   10    8   14    7  ---   18   18  ---    6 |    20   26   17   16   20   15  ---   17   23  ---    15
  26  |   10   17    7    8   12    3   12   10   11   23    4 |    16   27   25   27   28   20   28   22   21   32    21
 X27  |    9   16    5    8   13    4  ---   13   15  ---    4 |    13   21   19   22   24   16  ---   20   19  ---    16
  28E |   11   18    5    7   16    6   24   13   11   20    4 |    15   22   15   19   17   14   26   14   15   24    14
 X29  |    7   24    8    9   13    5   25   18   14  ---    5 |    19   30   19   19   20   19   29   23   20  ---    18
  30E |   24   26   14   14   23    8   22   76   44   29   11 |    23   33   24   31   36   30   33   83   64   31    30
  31  |    6   21    6    8   23    4   22   14   13   19    4 |    22   29   22   22   34   21   34   27   22   24    22
  32  |   11   25    7    7   17    5   14   10   12   15    4 |    13   29   17   15   16   14   24   18   17   15    14
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |    9   19    6   10   18    4   18   18   13   23      |T   20   27   20   22   27   30   28   22   22   25    20
 WRMS |    7   19    6    8   16    4   17   10   10   20      |NE  18   26   19   21   26   18   27   19   19   24    18
 MEDI |    7   19    6    8   16    4   19   10   11   19      |MD  18   27   19   20   25   18   28   19   19   23    18

Table 3.1616.2   GPS week: 1616   Day: 2   MJD: 55558.000                            

        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
------+--------------------------------------------------------+---------------------------------------------------------
  X1E |    8  ---  ---  ---  ---  539  ---  ---  ---  ---    0 |    56  ---  ---  ---  ---  373  ---  ---  ---  ---    56
   2  |    6   15    6   11   13    5   15   16    9   29    4 |    27   31   30   26   31   27   31   28   29   33    27
   3  |    7   19    8   10   17    4   13   16   12   13    4 |    18   28   23   19   26   21   28   22   18   30    19
   4  |    8   15    8   32   12   10   15   18    9   30    6 |    31   35   33   42   39   30   37   30   30   22    29
   5  |    5   24    5    9   18    5   19   18    8   23    4 |    12   28   17   14   28   13   26   15   19   16    13
   6  |    6   16    5    8   12    4   11   16    9   15    3 |    18   24   21   17   25   20   28   20   19   30    19
   7  |    6   21    9   10   21    4   19   14   13   28    4 |    10   28   16   16   25   16   27   17   20   32    14
   8  |    7   15    7    8   14    4   12   16   11   18    3 |    13   18   17   19   19   17   20   21   22   27    16
   9  |    8   15    6    7   13    4   12   14    8   17    3 |    14   18   19   19   21   14   20   18   19   26    15
  10  |    5   14    6    9   11    4   13   19    8   27    4 |    12   18   16   16   20   14   23   16   18   32    14
  11  |    7   15    4    8   11    4   14   13   12   36    4 |    33   40   33   36   45   33   41   37   36   51    34
  12E |    6   17    6    9   22    3   24   19    6   13    4 |    14   21   15   21   20   17   24   20   20   18    14
  13  |    7   24    7    8   25    5   22   14    9   16    4 |    16   28   16   15   35   15   27   17   18   17    14
  14  |    5   22    5    9   18    5   22   14   12   14    4 |    18   26   22   18   35   20   32   20   18   21    20
  15E |    7   27    7   13   15    4   26   11   11   20    4 |    43   50   50   45   55   46   53   47   48   48    47
  16E |    5   23   10    8   18    4   25   18   11   18    4 |    14   23   20   17   22   18   28   25   24   23    17
  17  |    8   21    7   10   15    5   21   11    8   37    4 |    16   26   17   16   27   15   27   16   15   33    14
  18  |    6   22    6    6   17    5   20   16   12   14    4 |    16   28   16   11   23   15   27   15   15   18    13
  19  |    7   26   10    7   11    4   24   17   12   29    5 |    18   31   21   16   24   19   33   19   21   24    17
  20  |    6   20    7    9   20    5   19   13   10   15    4 |    12   25   12   15   22   13   22   14   15   14    12
  21  |    6   12    7    8    9    3   13   14    9   22    3 |    20   29   25   27   29   25   28   25   28   28    24
  22  |    5   19    4    7   18    5   18   15   11   16    4 |    15   27   15   11   28   14   24   16   12   18    12
  23  |    9   22    5   13   22    7   22   12    9   13    4 |    18   28   17   23   26   19   27   21   17   24    17
 X24  |    5  ---    3    9  ---    5  ---   11  ---  ---    4 |     9  ---    8   18  ---   10  ---   11  ---  ---    10
 X25E |   17   27    9   10   19    7  ---   26   14  ---    6 |    20   28   13   17   24   10  ---   20   14  ---    10
  26  |    9   19    6    7   12    4   16   13   10   20    4 |    13   24   20   22   24   16   27   20   22   31    17
  27  |    8   16    8    7   14    3   10   15   11   29    4 |    15   19   21   20   22   15   18   21   18   38    16
  28E |    8   20    5    9   17    3   24   16    7   16    4 |    14   20   12   13   17   12   24   17   19   22    13
 X29  |    8   25   10    8   13    3   27   25   12  ---    5 |    22   30   22   16   19   19   30   27   20  ---    17
  30E |   17   26   11   13   20    6   17   84   44   23    8 |    19   33   21   26   31   21   33   85   59   32    22
  31  |    7   18   10    9   24    5   21   16   13   18    4 |    20   26   25   17   33   20   29   24   19   24    20
  32  |   10   20    4    6   18    6   18   12   11   13    4 |     8   20   11   11   18   12   23   12   14   13    11
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |    8   20    7   11   17    5   19   22   13   22      |T   18   27   20   19   27   29   28   23   22   26    19
 WRMS |    7   20    7   12   18    5   18   15    9   20      |NE  16   26   19   19   26   18   27   20   20   26    17
 MEDI |    7   20    7    9   17    4   19   16   11   18      |MD  16   27   19   17   25   17   27   20   19   24    16

Table 3.1616.3   GPS week: 1616   Day: 3   MJD: 55559.000                            

        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
------+--------------------------------------------------------+---------------------------------------------------------
  X1E |    9  ---  ---  ---  ---  469  ---  ---  ---  ---    0 |    41  ---  ---  ---  ---  258  ---  ---  ---  ---    56
   2  |    7   14    5   13   14    3   12   15    9   27    4 |    37   38   38   41   38   37   37   36   41   40    37
   3  |    7   15    7    8   16    4   12   15   12   17    4 |    22   28   23   28   27   26   33   29   30   29    26
   4  |    7   10    7   12   11    5    9   15    9   28    4 |    38   41   41   38   45   40   42   38   43   31    38
   5  |    6   23   10    8   16    3   19   16    9   19    4 |    22   32   22   22   33   20   29   20   26   21    21
   6  |    6   15    7    6   14    3    9   12    8   17    3 |    22   29   23   26   30   25   32   24   25   31    25
   7  |    8   19    9    6   22    6   21   14    9   24    4 |    21   31   25   25   31   22   33   23   24   30    22
   8  |    5   16    9    7   16    5   10   17    7   18    3 |    28   30   28   32   33   28   31   30   30   34    29
   9  |    7   13    6   10   12    6   11   15    8   20    3 |    18   22   21   22   18   21   20   19   24   25    18
  10  |    6   15   10    7   11    4   12   20    9   26    4 |    23   27   26   23   29   23   28   22   26   36    23
  11  |    7   17    6   10   10    6   11   16    7   37    4 |    35   46   39   40   49   39   44   41   39   52    38
  12E |    8   21    8    9   13    5   23   19    8   14    4 |    24   28   21   24   30   21   26   24   25   24    21
  13  |    5   22    7    6   27    4   20   11    7   16    4 |    27   34   28   27   42   29   37   29   31   29    27
  14  |    6   18    6    8   18    6   21   15    8   13    4 |    23   30   27   26   35   24   36   25   24   24    25
  15E |    7   21    6   10   19    2   23   12    7   21    4 |    50   52   49   50   55   49   55   50   48   53    49
  16E |    7   21    7   11   17    3   24   19   11   18    5 |    23   29   22   26   30   24   30   28   25   24    22
  17  |    9   19    8    6   15    5   21   12    5   39    4 |    27   32   29   23   33   27   36   26   30   41    26
  18  |    9   21    5    9   16    3   23   16    7   13    4 |    25   32   25   26   28   25   36   25   25   25    23
  19  |    5   26    7    6   12    4   22   18    9   21    4 |    25   34   24   25   29   26   38   28   27   25    25
  20  |    6   21    8    9   16    6   21   14   10   15    4 |    22   32   24   22   26   22   31   23   27   22    22
  21  |    8   12    6    6    9    4   10   13    9   23    3 |    34   38   36   37   40   37   37   35   39   35    35
  22  |    7   19    7    7   20    5   21   14    9   16    4 |    25   33   25   26   34   25   34   23   21   24    23
  23E |   10   25    6   11   18    4   18   17   10   18    4 |    31   38   30   37   39   29   35   24   31   25    30
 X24  |    9  ---  ---  ---  ---   17  ---  ---  ---  ---    0 |    17  ---  ---  ---  ---   15  ---  ---  ---  ---    16
 X25E |   12   25    8    9   19    6  ---   24   12  ---    6 |    23   32   22   23   27   22  ---   22   26  ---    22
  26  |   11   21   10   11   13    2   15   13    9   20    4 |    20   29   21   26   26   20   29   24   20   31    20
 X27  |    8   15    6    7   14    5  ---   18    8  ---    4 |    18   22   22   21   18   21  ---   22   22  ---    18
  28E |    6   17    9    6   17    5   20   16   10   16    4 |    24   30   25   21   26   23   31   24   28   24    23
 X29  |   13   24   13   13   13    5   26   24   10  ---    6 |    28   37   32   31   27   30   37   30   28  ---    27
  30E |   19   26   15   14   23    5   19   65   37   29   10 |    33   35   31   31   40   33   37   80   59   34    33
  31  |   11   21    7    9   22    6   21   16   10   19    5 |    20   30   25   23   36   21   32   23   21   25    21
  32  |   12   19    7    7   16    6   17   15   10   13    4 |    18   25   22   21   23   19   28   19   22   19    19
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |    8   19    8    9   17    5   18   20   11   21      |T   26   32   27   28   32   33   34   28   29   30    26
 WRMS |    8   19    8    9   18    5   17   15    8   21      |NE  24   31   27   27   31   25   33   26   28   29    25
 MEDI |    7   19    7    8   16    5   19   15    9   19      |MD  24   32   25   26   30   25   33   24   26   29    23

Table 3.1616.4   GPS week: 1616   Day: 4   MJD: 55560.000                            

        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
------+--------------------------------------------------------+---------------------------------------------------------
  X1E |  111  ---  ---   40  ---   83  ---   45   55  ---   33 |    56  ---  ---   10  ---  145  ---    6   19  ---    60
   2  |    7   17    7   31   14    6   15   14    7   28    5 |    34   35   39   48   36   38   34   33   38   38    36
   3  |    9   17   11    6   13    5   10   13    7   18    3 |    33   36   32   32   36   32   34   28   32   34    31
   4  |    6   13   14   11    9    4    8   13    7   29    4 |    34   37   48   40   43   38   39   35   36   27    37
   5  |    6   25    9    8   16    5   21   13   11   14    4 |    22   36   24   23   34   23   34   21   27   22    24
   6  |    7   14    7    6   14    5    9   11    7   17    3 |    26   29   26   26   32   26   29   19   25   29    25
   7  |    7   19    9    7   19    4   21   14    8   24    4 |    25   29   28   21   36   22   28   20   26   26    23
   8  |    8   14    6    8   14    4    9   15    7   18    3 |    29   29   29   24   31   26   30   26   31   32    28
   9  |    8   15    5    9   13    4   12   12   10   19    3 |    18   19   16   18   20   16   21   18   14   25    15
  10  |    8   14    5    9   14    3   11   14    7   25    3 |    23   27   28   27   27   25   29   22   27   38    26
  11  |    5   15    7   12    7    5   14   17    7   38    4 |    30   36   34   37   40   34   37   34   32   50    32
  12E |   11   23    8   15   18    3   23   18   10   16    5 |    21   26   22   23   22   20   23   23   20   25    20
  13  |    6   19    6    8   23    4   17   11   10   14    4 |    25   32   27   22   43   25   30   26   30   30    26
  14  |    6   20    8   10   16    5   17   14   11   12    4 |    22   27   27   24   35   23   29   23   24   21    23
  15E |    7   24    7   13   16    3   19   10    9   15    4 |    29   35   30   34   34   30   35   29   29   33    29
  16E |    7   24    8    8   15    4   26   20    7   20    5 |    22   32   24   23   27   24   31   23   25   26    23
  17  |    7   18    8    9   13    5   20   13    6   34    4 |    23   30   26   24   30   22   33   21   23   34    23
  18  |    7   22    5    8   17    5   22   14    8   13    4 |    26   37   25   24   30   27   38   24   25   26    25
  19  |    7   22   10    8   13    5   23   19    7   22    4 |    26   34   26   25   32   25   36   23   25   22    25
  20  |    7   19    5    9   14    5   20   15    8   17    4 |    24   30   19   22   29   21   31   20   23   21    21
  21  |   11   13   10    9   10    6   12   12    8   23    4 |    31   33   38   33   32   30   34   30   30   30    31
  22  |    7   20    7    9   19    5   18   11   13   15    4 |    24   33   28   23   35   26   32   22   26   24    24
  23E |   10   23    6   10   19    6   19   16   10   16    4 |    29   36   23   28   32   26   32   26   24   27    24
 X24  |    5   10    3   12    9    5   10   13    9  ---    3 |    15   12    9    8    8   15   10   12   10  ---    14
 X25E |   13   23    6   10   15    5  ---   19   10  ---    5 |    21   29   23   20   34   22  ---   22   24  ---    21
  26  |   10   23    6   13   12    3   12   11   13   20    4 |    19   28   24   26   30   23   29   23   25   30    22
 X27  |    9   18    6    8   12    4  ---   13    8   31    4 |    17   19   14   17   21   15  ---   19   14   36    14
  28E |    7   14    8   10   17    3   20   12    9   14    4 |    21   27   22   21   25   21   27   21   23   20    21
 X29  |   11   24    9    6   11    5   26   20   10  ---    5 |    24   31   24   24   27   23   34   25   26  ---    23
  30E |   26   24   12   14   27    4   22   55   37   25    9 |    32   36   29   31   42   31   35   66   50   32    30
  31  |    6   25    9    5   18    5   21   19    9   18    4 |    20   28   20   19   33   17   27   20   20   25    19
  32  |   10   17    8    9   14    6   15   13   10   15    4 |    22   25   19   24   25   21   25   21   23   20    20
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |    9   19    8   11   16    5   18   17   11   21      |T   25   30   25   25   31   28   30   24   25   28    25
 WRMS |    8   19    8   10   14    5   17   14    8   21      |NE  24   29   26   25   31   24   30   23   25   29    24
 MEDI |    7   19    7    9   14    5   18   14    9   18      |MD  24   30   26   24   32   24   31   23   25   27    24

Table 3.1616.5   GPS week: 1616   Day: 5   MJD: 55561.000                            

        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
------+--------------------------------------------------------+---------------------------------------------------------
  X1E |    9  ---  ---  ---  ---  258  ---  ---  ---  ---    0 |    61  ---  ---  ---  ---  239  ---  ---  ---  ---    62
   2  |    8   11    6   11   15    5   13   12    6   30    4 |    20   24   24   28   24   21   25   23   29   31    23
   3  |    5   16    6   10   17    5   10   12   10   21    3 |    16   23   20   19   20   19   23   19   22   27    17
   4  |    8   11    4    7   14    7    9   14    9   29    3 |    25   33   31   32   36   29   33   30   34   27    29
   5  |    6   23    8    9   17    4   19   11    7   14    4 |     9   28   16   14   26   11   26    9   13   12    12
   6  |    4   14    7    8   15    6   10   12    7   18    3 |    15   21   18   17   21   17   22   16   17   25    15
   7  |    7   24    8    8   24    5   18   12    8   22    4 |    18   31   21   25   28   19   27   20   22   25    20
   8  |    9   11    8    6   16    4    9   14    9   16    3 |    28   28   26   28   31   26   30   29   30   31    27
   9  |    8   13    6    6   17    3   10   12   10   19    3 |    13   15   15   13   16   11   17   15   14   22    11
  10  |    7   14    6    9   13    4   10   14    5   26    3 |    17   23   20   23   21   16   23   18   21   32    18
  11  |    7   14    7    9   14    6   13   14    9   39    4 |    22   31   25   31   35   23   31   25   27   43    25
  12E |    8   21   10   10   22    4   25   19    9   21    5 |    16   26   17   22   19   17   28   21   20   29    18
  13  |    6   21    6    6   29    4   19   10    6   11    4 |    22   30   24   23   41   22   32   23   23   24    22
  14  |   11   19    7    8   23    4   19   14    6   13    4 |    28   31   29   27   43   24   34   26   25   27    27
  15E |    9   21    8   14   20    5   21   12    8   12    4 |    27   31   30   28   36   26   32   29   30   31    27
  16E |    5   27    8   12   22    5   26   21   10   14    5 |    11   25   15   16   24   11   26   17   14   17    10
  17  |    7   18   10    8   16    5   20   13    7   29    4 |    22   30   28   25   26   23   32   23   23   35    23
  18  |    8   21    8    7   18    6   20   14    8   17    4 |    20   32   21   19   25   19   32   23   21   26    19
  19  |    7   23    7    7   14    6   23   16    9   23    4 |    16   30   19   19   19   16   31   21   21   20    17
  20  |    7   19   10   11   17    6   21   13    9   17    4 |    14   25   16   15   19   12   24   13   16   15    11
  21  |    5   14   10   11   11    6   11   13   11   24    4 |    23   26   26   26   26   20   25   24   24   28    22
  22  |    6   17    7    7   21    6   18   10    7   15    3 |    19   29   22   19   30   18   30   20   19   22    18
  23E |    8   25    7   12   22    6   22   13    6   15    4 |    15   28   16   16   25   14   25   18   13   20    13
  24  |    9   11    5   10   12    4    9   11    6   36    4 |    12   15   11   14   10   13   13    9   16    9    14
 X25E |    9   24    9    6   22    5  ---   20    7  ---    5 |    16   28   17   19   22   16  ---   18   22  ---    18
  26  |   11   21   10   11   15    5   12   14   10   20    4 |    13   28   16   25   24   16   23   20   22   26    16
 X27  |    9   17    6    7   15    4  ---   12    7   28    4 |    12   18   13   12   16   11  ---   15   15   30    10
  28E |    7   15    8    6   19    3   19   13    9   11    4 |    14   21   13   15   21   14   23   16   19   14    14
 X29  |    9   26   11    8   13    5   25   23   11  ---    5 |    15   29   19   21   18   18   28   22   21  ---    17
  30E |   25   24   14   13   22    6   21   47   35   23    9 |    23   35   29   35   34   29   38   60   48   29    29
  31  |    7   20    8    6   23    3   20   17    8   21    4 |    14   23   18   14   31   14   27   17   18   22    15
  32  |   10   18    8   10   16    4   16    9    8   15    4 |    12   21   15   18   15   12   21   14   14   14    11
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |    9   19    8    9   19    5   17   16   10   22      |T   19   26   20   21   25   24   26   21   21   24    19
 WRMS |    8   19    8    9   16    5   16   13    7   19      |NE  17   26   20   21   25   17   26   19   21   24    18
 MEDI |    8   19    8    8   17    5   19   13    8   20      |MD  16   28   19   19   24   17   27   20   21   26    18

Table 3.1616.6   GPS week: 1616   Day: 6   MJD: 55562.000                            

        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
------+--------------------------------------------------------+---------------------------------------------------------
  X1E |    9  ---  ---  ---  ---  144  ---  ---  ---  ---    0 |    57  ---  ---  ---  ---  174  ---  ---  ---  ---    54
   2  |    9    9    9   27   14    6   13   16   16   30    5 |    43   45   46   50   46   43   43   45   47   47    44
   3  |    7   16   10    7   16    7   11   16    7   18    4 |    22   29   22   25   28   25   25   23   20   25    23
   4  |    7   13    6   11   12    6    7   15    9   30    4 |    38   41   44   43   51   42   42   43   40   34    40
   5  |    6   20    8   11   18    6   20   11   14   14    4 |    19   32   19   21   31   22   30   20   22   22    20
   6  |    5   14    8    7   14    6   11   19   10   17    3 |    19   28   20   22   29   23   25   20   17   27    21
   7  |    8   20   11   11   18    5   21   12    8   22    4 |    19   28   22   22   26   23   29   23   19   25    20
   8  |   10   13    7    8   14    5   10   14    8   17    3 |    26   28   25   27   26   26   28   25   26   28    26
   9  |    7   13    5    9   14    5   10   10   16   16    3 |    15   19   16   16   16   17   20   19   14   23    15
  10  |    7   13    7   11   12    6   12   10   11   25    4 |    20   22   22   23   26   21   26   21   19   34    20
  11  |    7   14    7    7   11    4   12   14    8   38    4 |    40   47   46   46   54   43   44   44   39   56    43
  12E |    9   21   10   20   30    5   21   17   11   25    6 |    22   30   22   34   32   22   26   26   24   27    22
  13  |    5   19    8   10   24    4   24   10    8   13    4 |    26   31   25   27   36   27   37   26   28   27    25
  14  |   30   22   12   15   17   20   16   19   21   17    7 |    65   84   85   85   84   67   86   84   67   80    80
  15E |    6   21    8   10   17    6   17   14   13   13    4 |    52   55   49   53   56   53   57   54   50   57    52
  16E |    7   25    9   17   17    6   26   25    9   16    5 |    21   31   21   27   29   23   29   25   23   23    20
  17  |    8   20    6    9   18    7   19   13   10   21    4 |    26   30   23   26   29   25   31   26   28   35    25
  18  |    7   24   10   11   16    6   22   16   11   20    5 |    26   35   25   21   25   26   36   27   24   27    22
  19  |    6   21    7   11   16   10   21   13    9   30    4 |    27   35   25   29   29   27   36   24   25   33    25
  20  |    8   22    9   11   16    4   21   16    8   20    4 |    22   28   19   19   24   19   29   20   19   23    18
  21  |    4   12   10   11   11    4   12   14   10   25    4 |    37   39   37   40   43   38   40   40   41   40    38
  22  |    6   19    7   12   15    5   20   11   10   16    4 |    25   32   21   23   30   24   33   22   24   26    20
  23E |    8   22    8   15   19    6   24   15   14   13    5 |    27   37   24   27   32   25   35   28   24   30    25
  24  |    7   10    4    9    9    4    9   11    9   40    4 |    12   12   11   14    9   12   10    9   14   11    12
 X25E |    8   23    9    9   18    6  ---   16   12  ---    5 |    22   31   21   20   27   20  ---   22   24  ---    20
  26  |   11   22    7   12   13    6   14   15   18   20    4 |    18   26   18   25   25   19   27   23   19   29    18
  27  |    6   18    5    8   16    5    9   12   15   26    4 |    14   22   13   16   16   16   15   20   13   33    14
  28E |    6   16    7    8   16    5   19   13   10   11    4 |    22   25   20   21   18   21   25   22   26   20    22
  29  |    9   24    8    9   15    5   23   17   14   17    5 |    29   37   26   30   27   32   37   31   25    8    28
  30E |   21   25    9   15   18   11   19   33   27   42    8 |    69   76   70   67   82   66   73   79   82   77    68
  31  |    7   23    8    8   17    5   20   20    9   23    5 |    20   32   21   22   34   22   30   25   21   25    21
  32  |    9   17    8    8   13    5   15   13   10   16    4 |    19   22   25   20   24   21   25   20   22   21    20
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |   10   19    8   12   16    7   17   16   12   23      |T   28   34   28   30   33   33   34   30   28   32    28
 WRMS |    7   19    8   12   14    5   16   14   10   21      |NE  26   32   27   28   32   27   32   28   26   30    26
 MEDI |    7   20    8   11   16    6   17   14   10   20      |MD  22   31   22   25   29   24   30   25   24   27    22



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 4.1616   GPS week: 1616   MJD: 55556.0-55562.0

CENT| CLK EPO  |        BRUS       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 2993 |U    8    10    23 |U   10    13    37 |U   19    11    41 |
emr | emr 2944 |U   15    13    28 |U   12    13    40 |    22    19    56 |
esa | esa 2948 |    10    11    23 |U   10    13    37 |    18    13    40 |
gfz | gfz 2956 |U   10    11    24 |U   11    13    42 |U   21    15    47 |
grg | grg 2948 |    11    13    25 |U   10    14    42 |    19    14    44 |
igr | igr 2951 |     9    10    23 |    10    13    38 |    18    12    40 |
igs | igs 2947 |    10    10    23 |    10    13    37 |    19    12    41 |
jpl | jpl 2791 |U   20    24    55 |    12    14    45 |U   21    16    53 |
mit | mit 2962 |U   14    13    34 |U   11    16    48 |U   25    19    58 |



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 5.1616.0   GPS week: 1616   Day: 0   MJD: 55556.0

CENT| CLK EPO  |        BRUS       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3020 |     8     8    18 |     9    12    37 |     6     6    15 |
emr | emr 2972 |    14    11    25 |    11    11    41 |    18    20    46 |
esa | esa 2976 |     8     9    22 |    10    13    40 |     8     7    17 |
gfz | gfz 2972 |     8     9    24 |    18    11    67 |    10    11    21 |
grg | grg 2976 |    11    12    23 |    10    13    42 |     7     7    19 |
igr | igr 2976 |     8     8    20 |    10    12    40 |     9     8    17 |
igs | igs 2976 |     8     9    21 |    10    12    40 |     8     7    16 |
jpl | jpl 2876 |    13    13    27 |    10    13    41 |     9    14    30 |
mit | mit 2976 |     9     8    22 |    10    14    43 |    12    12    27 |

Table 5.1616.1   GPS week: 1616   Day: 1   MJD: 55557.0

CENT| CLK EPO  |        BRUS       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3024 |     7     6    17 |     8    12    41 |    93    42   200 |
emr | emr 2972 |    16    10    23 |     9    13    45 |    92    56   199 |
esa | esa 2976 |     8     5    19 |     8    12    41 |    86    49   180 |
gfz | gfz 2972 |     9     5    18 |     8    13    44 |    98    47   212 |
grg | grg 2976 |     8     9    21 |     8    12    40 |    87    44   191 |
igr | igr 2976 |     9     5    19 |     8    13    42 |    84    42   186 |
igs | igs 2976 |     9     5    17 |     7    12    41 |    91    46   195 |
jpl | jpl 2779 |    19    22    48 |     9    14    39 |   101    52   234 |
mit | mit 2976 |     8     5    20 |     8    13    44 |    96    53   202 |

Table 5.1616.2   GPS week: 1616   Day: 2   MJD: 55558.0

CENT| CLK EPO  |        BRUS       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 2923 |     6     8    21 |     8    10    27 |     6     5    11 |
emr | emr 2876 |    16    14    30 |     8     9    36 |     7    11    23 |
esa | esa 2880 |     9    10    18 |     7     9    33 |     7     7    12 |
gfz | gfz 2877 |    10    10    18 |     7    10    30 |     8    10    21 |
grg | grg 2880 |     8    12    20 |     8    11    37 |     9     9    15 |
igr | igr 2880 |     9    10    23 |     8     9    30 |     6     5    13 |
igs | igs 2879 |    10    10    19 |     8     9    30 |     7     6    12 |
jpl | jpl 2773 |    21    25    55 |     9     9    43 |     8     8    14 |
mit | mit 2880 |     9     9    18 |     7     8    39 |    10    15    36 |

Table 5.1616.3   GPS week: 1616   Day: 3   MJD: 55559.0

CENT| CLK EPO  |        BRUS       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 2928 |     5     8    17 |    11    12    35 |     6     5    12 |
emr | emr 2876 |    13     8    24 |    12    11    34 |    11    15    40 |
esa | esa 2880 |     7     5    14 |    10    11    32 |     6     5    15 |
gfz | gfz 2876 |     8     5    17 |    10    14    33 |     6     8    15 |
grg | grg 2880 |     7     7    15 |    10    13    40 |     7     8    17 |
igr | igr 2880 |     6     5    16 |    11    11    32 |     6     6    14 |
igs | igs 2879 |     7     6    16 |    11    11    33 |     6     6    14 |
jpl | jpl 2683 |    15    14    41 |    11    13    35 |     8    11    29 |
mit | mit 2880 |    10     7    20 |    11    11    33 |     7    10    31 |

Table 5.1616.4   GPS week: 1616   Day: 4   MJD: 55560.0

CENT| CLK EPO  |        BRUS       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3027 |    15    24    44 |    16    19    51 |     8     7    18 |
emr | emr 2972 |    21    25    44 |    16    21    46 |     8    16    33 |
esa | esa 2976 |    17    25    46 |    15    19    48 |     8     8    18 |
gfz | gfz 3053 |    17    24    44 |    15    21    50 |     8     9    20 |
grg | grg 2976 |    17    25    46 |    16    22    56 |    10    11    20 |
igr | igr 3005 |    16    23    44 |    15    21    46 |     8     9    18 |
igs | igs 2976 |    17    24    44 |    15    21    46 |     8     8    18 |
jpl | jpl 2778 |    31    37    79 |    17    24    49 |    10    15    24 |
mit | mit 3072 |    30    33    41 |    21    34    82 |    29    25    48 |

Table 5.1616.5   GPS week: 1616   Day: 5   MJD: 55561.0

CENT| CLK EPO  |        BRUS       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3017 |     8     8    20 |     8    10    29 |     5     8    17 |
emr | emr 2972 |    15    12    27 |    11    11    31 |     8     7    29 |
esa | esa 2976 |    10    11    21 |     8     9    26 |     6     7    18 |
gfz | gfz 2972 |    11    13    22 |     9    10    28 |     7     9    18 |
grg | grg 2976 |    21    16    24 |    10    11    33 |     8    10    23 |
igr | igr 2969 |    10     8    19 |     9    11    30 |     6     8    19 |
igs | igs 2971 |    10     9    21 |     9     9    28 |     6     8    17 |
jpl | jpl 2780 |    33    44   108 |    11    12    41 |     7     8    28 |
mit | mit 2976 |    18    20    82 |    10    13    42 |     9     9    28 |

Table 5.1616.6   GPS week: 1616   Day: 6   MJD: 55562.0

CENT| CLK EPO  |        BRUS       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3015 |     8     7    22 |    13    15    41 |     6     8    16 |
emr | emr 2971 |    13     9    24 |    15    16    47 |    10     9    24 |
esa | esa 2976 |     8    11    20 |    13    15    42 |     7     8    18 |
gfz | gfz 2970 |     9    11    25 |    12    14    43 |     9    10    22 |
grg | grg 2975 |     8     9    28 |    11    14    44 |     8     8    25 |
igr | igr 2975 |     8     9    20 |    13    16    47 |     8     8    17 |
igs | igs 2975 |     8     9    21 |    13    15    43 |     8     8    19 |
jpl | jpl 2871 |    10    10    30 |    15    17    67 |     8     7    16 |
mit | mit 2976 |    13    12    36 |    13    18    52 |    11    12    34 |


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 6.1616   GPS week: 1616   MJD: 55556.500-55562.500

                                                         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 |       9     -41      -8      72      1 |      -2     24
            |      20      17      99      66      3 |       3
emr   uuuuu |      37     -24     123     203     -4 |      12     26
            |      25      38     153      62      9 |       3
esa   uuuuu |       5      -1      61      -4      3 |     -12     25
            |      18      18      59      65      4 |       3
gfz   uuuuu |       5      39     -74      51      3 |      -5     21
            |      16      17      59      26      7 |       4
grg   uuuux |       5     -33       6      27     -6 |      -1     38
            |      48      21     151      80     19 |       3
igr   xxxxx |       0      28       8     -74     -1 |      -2     19
            |      33      12      74      73      6 |       4
irf   xxxxx |       0     -12    -142      17      2 |      -7     23
            |      14      21      64      30      9 |       4
jpl   uuuuu |      26      -7    -113     103    -12 |      -7     25
            |      18      25     103      78      9 |       6
mit   uuxuu |     -29      10    -385     -68      1 |       5     24
            |      24      38     102     102     13 |       4
ngs   uuuuu |      -4      -1     -11    -202      1 |      -8     19
            |      34      49     128     128     13 |       3
sio   uuuuu |     -56     -60      33      33      1 |       8     24
            |      23      31     126      56     10 |       4


Table 7.1616.0   GPS week: 1616   Day: 0   MJD: 55556.500

                                                         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 |     -18     -62       1      49     -1 |      -1     19
emr   uuuuu |     -16      -4    -102     161     -8 |      15     23
esa   uuuuu |      10      17      69     -89     -3 |      -8     18
gfz   uuuuu |      -5      53     -71      70      7 |      -6     15
grg   uuuux |      81      12    -277      39     26 |       4     38
igr   xxxxx |     -51      42      20    -190      4 |       2     15
irf   xxxxx |      -5     -41     -58      53      6 |      -7     17
jpl   uuuuu |      15      35     -70     106    -12 |       1     20
mit   uuxuu |     -39     -51    -237      95      7 |       6     18
ngs   uuuuu |      16     -16     139    -250     -1 |      -4     12
sio   uuuuu |     -67     -97     214      62      3 |       8     17

Table 7.1616.1   GPS week: 1616   Day: 1   MJD: 55557.500

                                                         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 |       4     -62    -170     151     -2 |      -4     23
emr   uuuuu |      53      -6     100     256    -15 |      11     25
esa   uuuuu |      11      21      -8      35      1 |     -13     24
gfz   uuuuu |       3      33     -82      63      9 |      -9     20
grg   uuuux |      49     -39     -35     162    -27 |       2     38
igr   xxxxx |      -4       7     -67     -41     -6 |      -3     19
irf   xxxxx |     -11     -22     -80      54     11 |     -10     21
jpl   uuuuu |      27      21    -104     -39    -11 |      -4     26
mit   uuxuu |     -47     -10    -254      41     13 |       2     19
ngs   uuuuu |     -23     -44     100    -435    -17 |      -8     19
sio   uuuuu |     -89     -77     174      45     11 |       4     20

Table 7.1616.2   GPS week: 1616   Day: 2   MJD: 55558.500

                                                         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     -33     124     -33      3 |      -4     23
emr   uuuuu |      53     -72     287     134    -12 |      11     25
esa   uuuuu |      -5     -11      68      45      0 |     -13     24
gfz   uuuuu |      10      25    -119      73      8 |      -8     19
grg   uuuux |      -1     -38     -12     104    -17 |      -2     38
igr   xxxxx |     -20      22    -103     -61    -10 |      -3     19
irf   xxxxx |     -23     -13    -181     -17     11 |      -9     21
jpl   uuuuu |       6     -16    -244     176    -30 |      -5     26
mit   uuxuu |     -66       9    -454    -134     14 |       3     20
ngs   uuuuu |      41      57      28    -237    -11 |      -9     20
sio   uuuuu |     -80     -50      -5     -81     12 |       5     20

Table 7.1616.3   GPS week: 1616   Day: 3   MJD: 55559.500

                                                         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     -29      86     131      5 |      -2     24
emr   uuuuu |      54     -62     281     157     -8 |      11     26
esa   uuuuu |      35     -18      53      71      9 |     -12     25
gfz   uuuuu |      -5      43     -66      11      8 |      -4     22
grg   uuuux |     -65     -30      11      -3    -16 |       0     38
igr   xxxxx |     -23      35      97     -72     -6 |      -3     20
irf   xxxxx |       1     -10    -215      19      5 |      -6     24
jpl   uuuuu |      61     -27    -231      67    -15 |      -7     26
mit   uuxuu |     -28      10    -489     -55      6 |       6     24
ngs   uuuuu |     -30      42      39    -188     -6 |      -8     20
sio   uuuuu |     -54     -60    -125      60      4 |       9     25

Table 7.1616.4   GPS week: 1616   Day: 4   MJD: 55560.500

                                                         AC LOD  AC LOD
CENT  FLAG  |   Xpole   Ypole     Xrt     Yrt    LOD |    BIAS  BIAS RMS
            |   [uas]   [uas]   [uas/d] [uas/d]  [us]|    [us]    [us]
------------+----------------------------------------+------------------
cod   xxxxx |       2     -44     -88      28     -3 |       4     26
emr   uuuuu |      37     -32     225     203     -3 |      16     27
esa   uuuuu |      11      -3      50      14      3 |      -7     25
gfz   uuuuu |      34      63    -167      30      4 |       1     23
grg   uuuux |     -26     -50     207     -16     12 |      -1     38
igr   xxxxx |      19      39      56    -130      2 |       1     19
irf   xxxxx |      12       0    -212      25     -4 |       0     23
jpl   uuuuu |      35     -30      15     128    -12 |      -3     24
mit   uuxuu |     -10      29    -459     -96     -4 |      11     27
ngs   uuuuu |     -53      -4     -70    -171     11 |      -6     20
sio   uuuuu |     -34     -44     -93      97     -6 |      14     28

Table 7.1616.5   GPS week: 1616   Day: 5   MJD: 55561.500

                                                         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 |      23     -42       7      54      3 |      -1     27
emr   uuuuu |      25     -34     105     199      6 |      13     27
esa   uuuuu |     -15     -22      17      -7      3 |     -11     28
gfz   uuuuu |      14      46     -15      77     -9 |      -2     24
grg   uuuux |     -12     -48      27     -28    -16 |      -2     38
igr   xxxxx |      41      29      69     -66      1 |      -2     21
irf   xxxxx |      17     -24    -103     -15     -7 |      -4     26
jpl   uuuuu |      27     -14      -3      86     -4 |     -10     27
mit   uuxuu |       4       9    -378    -167    -11 |       7     28
ngs   uuuuu |     -10      37     -71    -101     15 |      -9     22
sio   uuuuu |     -28     -85      48      23     -7 |      10     29

Table 7.1616.6   GPS week: 1616   Day: 6   MJD: 55562.500

                                                         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 |      45     -14     -20     125      1 |      -7     27
emr   uuuuu |      49      41     -39     310     11 |       8     24
esa   uuuuu |     -13      13     178     -96      8 |     -17     30
gfz   uuuuu |     -16      14       4      35     -7 |      -8     27
grg   uuuux |       9     -35     122     -67     -9 |      -6     41
igr   xxxxx |      34      24     -19      43      5 |      -9     21
irf   xxxxx |       5      25    -145      -4     -9 |     -11     29
jpl   uuuuu |      12     -15    -157     196     -2 |     -19     28
mit   uuxuu |     -21      74    -428    -160    -19 |       0     28
ngs   uuuuu |      30     -77    -240     -31     13 |     -14     22
sio   uuuuu |     -43      -3      19      23    -14 |       4     28



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