[IGSREPORT-18370] Wk 1572 IGS Final Orbits

Jim Ray IGS.ACC at noaa.gov
Thu Mar 11 05:23:58 PST 2010


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IGS Electronic Report   11 Mar 07:46:04 PST 2010      Message Number 18370
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Author:  AC Coordinator / NOAA NGS

sum-file Version 2.0
Final IGS Orbit Combination - Week 1572   (Feb 21, 2010 - Feb 27, 2010)

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 (weights are those from the orbit combination). 
Pole rate combination uses only centres providing estimated pole rates.

  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:

igs1572[0-6].sp3  IGS GPS ephemeris files in SP3 format.
igs1572[0-6].clk  IGS GPS satellite and station clocks in clock RINEX format.
igs1572[0-6].cls  IGS GPS clock combination summary report.
igs15727.erp      Earth Rotation Parameters (ERP) and their rates as well as
                  Universal Time (UT1-UTC) and Length Of Day (LOD) associated 
                  with IGS ephemerides.
igs15727.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 1478, a new solution from CNES/GRGS (GRG) is included for
    evaluation and statistics only.

 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  |  ALL   | 1 1
                0  |  COD   | HARB NRIL
                0  |  EMR   | 3 6 3 6 26 HARB WTZR WTZR
                0  |  GFZ   | 5 14 22 26 28 AMC2 AREQ BAKO FAA1 GLPS GOLD GUAT
                0  |  GFZ   | MDO1 PIE1 PRDS SCUB THU3
                0  |  GRG   | ONSA ULAB
                0  |  JPL   | 3 26 DGAR
                0  |  MIT   | 3 6 15 26 3 6 15 26 HARB SSIA
                1  |  ALL   | 1 1
                1  |  COD   | 6 6
                1  |  EMR   | 3 3 26 WTZR
                1  |  GFZ   | MCM4 ONSA
                1  |  GRG   | SPT0
                1  |  JPL   | 3 DGAR
                1  |  MIT   | 3 3 26 WTZR HARB WES2 WTZR
                2  |  ALL   | 1 1
                2  |  COD   | 29
                2  |  EMR   | 3 6 3 6 WTZR
                2  |  GFZ   | 5 29 TWTF
                2  |  GRG   | ONSA
                2  |  JPL   | 3 DGAR
                2  |  MIT   | 3 6 30 3 6 24 30 NICO HARB NICO
                3  |  ALL   | 1
                3  |  COD   | 30 30 WES2 WTZR
                3  |  EMR   | 3 6 3 6 WTZR WTZR
                3  |  ESA   | UNSA
                3  |  GFZ   | 5 17 29 ALRT
                3  |  GRG   | ONSA TLSE
                3  |  JPL   | 3 DGAR
                3  |  MIT   | 3 6 30 3 6 30
                4  |  ALL   | 1
                4  |  COD   | 19 19 MAW1 MAW1 NRIL WTZR
                4  |  EMR   | 3 6 3 6 21 26
                4  |  ESA   | 4 WTZR
                4  |  GFZ   | 17 26 29 PIMO
                4  |  GRG   | ONSA
                4  |  JPL   | 3 26 DGAR GUAT INVK
                4  |  MIT   | 6 3 6 21 26 TWTF
                5  |  EMR   | 3 6 3 6 26 WTZR
                5  |  ESA   | MATE
                5  |  GFZ   | 9 29 ADE1
                5  |  GRG   | ONSA
                5  |  JPL   | 3 DGAR
                5  |  MIT   | 6 3 6 26
                5  |  NGS   | 1
                6  |  COD   | NRIL
                6  |  EMR   | 3 6 26 3 6 26 WTZR DRAO WTZR
                6  |  ESA   | METS
                6  |  GFZ   | 17 22 26 29 IRKT MIZU UNSA XMIS
                6  |  GRG   | ONSA
                6  |  JPL   | 3 26 DGAR
                6  |  MIT   | 3 6 26 3 6 26 HARB HRAO IENG

 5. 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.

 6. 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  |    1.0    1.3     .8      -3    -10    -10    -.17
       EMR  |    2.9   -2.9    4.7      22     13      6     .16
       ESA  |    8.3     .6     .9      36    -80      9    -.02
       GFZ  |     .8    1.4    1.1      21    -13    -10    -.17
       GRG  |    5.3   -1.2   15.1       4      8    -51     .47
       JPL  |    3.2     .1   12.7      -7    -50    -67     .34
       MIT  |    7.8   -6.7   -4.2     -17      9    -46    -.09
       NGS  |    8.5   -2.1   -8.8     -24   -152     11     .13
       SIO  |    7.8   -7.6  -11.4    -136   -154     52     .22


 7. 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.

 8. 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.

 9. 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 1.1572.a). It also displays the computed satellite
position sigmas for the combined orbits (table 1.1572.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 2.1572.[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 3.1572.[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 5.1572.0-6).

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 1572 summary.                       (Feb 21, 2010 - Feb 27, 2010)

Table 1.1572.a   GPS week: 1572   MJD: 55248.000-55254.000

         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  244|    0     0     3    -5   -58   -24  -.22    9    8 |    -172    -450     16     72
        |    0     0     0     9    19    21   .01           |     281     498
emr   90|   -1     0     4   -66  -123   -39   .40   19   19 |   -1724     497     18     84
        |    0     1     1    20    45    24   .03           |     928    1287
esa  130|    2     0    -3   -94     0     6   .27    8    8 |    -700      37     15    107
        |    0     0     0    20    16     8   .03           |    1374    2366
gfz  198|    0    -1    -5   -24   -70    17  -.14   12   12 |     262    -341     24    103
        |    1     1     1    46    70    14   .05           |     415    1167
grg  105|    0     0     8    20  -108   -10   .98   26   22 | -181035  452399     67    211
        |    1     0     3    25    30    24   .02           |  374579 1679901
igr  n/a|    0     0     0   -10   -80   -22  -.03    5    5 |   -4819     850     20     64
        |    0     0     1    19    25    17   .03           |     482    1354
jpl  123|    0     1     7    -9    16   -19   .46   20   20 |     499     589     17    111
        |    1     0     1    19    25    17   .05           |     740    1277
mit  270|    0     0    -3    53  -114    -7  -.28   12   11 |  -13757     348     19    142
        |    0     0     1    30    26    14   .02           |    6090    1573
ngs  218|    0     0    -2    48   220    19  -.19   13   10 |  392579     432   2202   3882
        |    1     1     1    31    39    14   .03           |  799232  630566
sio  261|   -1     0     6   239   215    46  -.03   18   16 |     ---     ---    ---    ---
        |    0     1     1    25    25    11   .03           |     ---     ---


Table 1.1572.b   GPS week : 1572   MJD: 55248.000-55254.000   

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



Table 2: Daily transformation of each centre to the combined IGS orbit and
         clocks for each day of the week. The transformation displayed is the
         sum of a priori and estimated transformations.
         WRMS - RMS weighted by the centres SP3 header accuracy codes.
         STA  - Number of stations in the daily solutions.
   
Table 2.1572.0   GPS week: 1572   Day: 0   MJD: 55248.000                            

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  244|    0     0     4     0   -79   -23  -.20    9    8 |    -443     375     13     65
        |                     -2     4                       |
emr   90|   -1     0     6   -71  -128   -16   .41   18   18 |   -2092    1689     16     75
        |                     20   -18                       |
esa  130|    1     0    -3   -77     9    15   .22    8    7 |   -1464    1756     13    106
        |                     -2    10                       |
gfz  198|    1     0    -5   -30    30    -9  -.16   12   12 |      55     569     22     96
        |                     -8   -79                       |
grg  106|   -1     1    10   -11  -172    -2   .95   25   21 | -266977 -999999     56    196
        |                    -22    86                       |
igr  n/a|    0     1     0   -12   -98   -41  -.05    5    5 |   -5828    1564     21     72
        |                    -29   -21                       |
jpl  123|    2     1    10    -1    24   -16   .48   19   19 |    -119    1728     16    109
        |                     23   -60                       |
mit  276|    0     0    -5    48  -134     7  -.28   12   10 |  -16487    1300     15    127
        |                      7    15                       |
ngs  218|   -1     0    -2    33   182    -6  -.18   12    9 |  361275 1168795   1798   3712
        |                     60    45                       |
sio  261|   -1    -1     5   220   176    52  -.04   18   15 |     ---     ---    ---    ---
        |                   -144   -83                       |

Table 2.1572.1   GPS week: 1572   Day: 1   MJD: 55249.000                            

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  244|    0     1     2    -2   -74   -46  -.21    9    8 |       0    -576     17     72
        |                     10   -15                       |
emr   90|    0     0     7   -73  -132   -48   .42   19   19 |   -1249     514     16     88
        |                     26    -1                       |
esa  130|    2     0    -2  -100   -21     6   .27    9    9 |   -2433    3801     16    110
        |                     61    88                       |
gfz  198|   -2    -3    -6   -29   -33    34  -.14   12   12 |       9    -246     25    117
        |                     52   -42                       |
grg  106|   -1     0     1    23   -92   -43  1.01   26   23 | -999999 4167141     62    210
        |                    -64     0                       |
igr  n/a|   -1     0     0   -39   -90   -26  -.01    6    6 |   -4780     436     19     60
        |                      7    13                       |
jpl  123|    0     1     8    -8    29   -13   .48   21   21 |    1136     185     18    107
        |                     36   -46                       |
mit  276|    0     0    -4    80   -98    11  -.30   14   13 |  -15275   -2455     19    146
        |                     -1    -4                       |
ngs  218|    0     0    -1    21   209    39  -.23   14   11 | 2180987 -999999   2111   4027
        |                     -4    66                       |
sio  261|   -1     0     4   253   218    52  -.04   18   15 |     ---     ---    ---    ---
        |                   -155  -121                       |

Table 2.1572.2   GPS week: 1572   Day: 2   MJD: 55250.000                            

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  244|    0     0     3     1   -39   -42  -.21    8    8 |    -456    -173     18     73
        |                     24   -13                       |
emr   90|   -1    -1     4   -99  -135   -24   .45   18   18 |   -1030    -460     23    113
        |                     73    27                       |
esa  130|    1     0    -3  -120    14     1   .31    8    8 |   -1744   -2069     19    124
        |                    101    36                       |
gfz  198|    0     0    -3    27  -103    16  -.22   15   15 |     313    -597     26     96
        |                     30   -58                       |
grg  106|   -1     0    10    37  -101   -23   .97   28   21 |     -18    -574     65    203
        |                    -50    18                       |
igr  n/a|    0     0     1    -3   -70   -15  -.07    5    5 |   -4525    -550     22     67
        |                     -4    -7                       |
jpl  123|    2     0     8   -44    18     5   .41   21   21 |    1086    -538     18    127
        |                     74   -26                       |
mit  276|    0     0    -5   106  -125    -4  -.31   12   11 |  -16723     305     22    151
        |                     -8     7                       |
ngs  218|   -1     0    -2    -1   228    19  -.16   13   11 |  152611 -139041   2341   4140
        |                    134     1                       |
sio  261|   -1     0     5   288   197    56  -.05   17   16 |     ---     ---    ---    ---
        |                   -169  -108                       |

Table 2.1572.3   GPS week: 1572   Day: 3   MJD: 55251.000                            

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  244|    0     0     4     2   -32    13  -.23    8    8 |    -293    -275     20     79
        |                      3   -18                       |
emr   90|    0     3     3   -74  -161   -45   .42   18   18 |    -771    -335     21     65
        |                     24    58                       |
esa  130|    2    -1    -3   -95    16     5   .25    7    7 |    1092   -2996     17     97
        |                     33    19                       |
gfz  198|   -3    -3    -4   -12  -115    21  -.06   12   12 |    -334     962     23     87
        |                    -17   -38                       |
grg  106|   -1     0     8     0  -110   -35   .96   25   19 |     158    -328     74    227
        |                    -11    20                       |
igr  n/a|    0     1     0     5   -99   -20  -.05    5    5 |   -4518     306     25     62
        |                    -77    33                       |
jpl  123|    0     3     7    -8     3   -41   .42   20   20 |    1028      86     20    111
        |                     62     8                       |
mit  276|    0     1    -3    35  -123   -21  -.30   13   13 |  -15786    1048     23    133
        |                     26    11                       |
ngs  218|    0     0    -2    70   213    22  -.21   12   10 |   19689  -14038   2250   3687
        |                    -41    34                       |
sio  261|   -1     0     5   233   221    33  -.05   17   16 |     ---     ---    ---    ---
        |                   -140  -120                       |

Table 2.1572.4   GPS week: 1572   Day: 4   MJD: 55252.000                            

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  244|    0     0     3    -5   -75   -28  -.20    9    8 |    -279    -523     13     72
        |                     17    52                       |
emr   90|    0     0     2   -38  -181   -10   .36   18   18 |   -1300    -106     19     84
        |                    -28    73                       |
esa  130|    2     0    -4  -100     9    -6   .28    9    9 |    1151    -901     12     97
        |                     63    41                       |
gfz  198|    0    -2    -3   -47     0    21  -.12   12   12 |     902   -2597     21    106
        |                     22   -14                       |
grg  106|    0     0    10    49   -85    -8  1.00   26   22 |    -251     367     65    214
        |                   -108    -1                       |
igr  n/a|    0     0     0    10  -107   -21  -.01    5    5 |   -4446     517     19     68
        |                    -47    48                       |
jpl  123|   -1     1     4    11   -33   -10   .42   19   19 |     889     102     16    104
        |                     43    52                       |
mit  276|    0     0    -2    17   -62   -26  -.27   13   11 |  -16933    2594     17    144
        |                      2     5                       |
ngs  218|   -1     0     0    88   168    29  -.20   13   10 |   16767   -4483   2550   4155
        |                    -24    62                       |
sio  261|   -2     0     6   216   260    37   .01   18   17 |     ---     ---    ---    ---
        |                   -144  -127                       |

Table 2.1572.5   GPS week: 1572   Day: 5   MJD: 55253.000                            

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  244|    0     0     4   -26   -46    -5  -.22    9    8 |     331   -1210     14     65
        |                     50    -2                       |
emr   90|   -1     0     3   -64   -74   -44   .39   19   19 |   -2162    -621     17     76
        |                    -15    -5                       |
esa  130|    1    -1    -3  -109    -1     4   .28    8    8 |    -839    -609     16    129
        |                     27    52                       |
gfz  198|    0    -2    -7    28  -161     7  -.12   13   13 |     233     245     26    131
        |                      0    -7                       |
grg  106|    1     0    12    -3   -82    14   .96   26   23 |    -171     366     75    222
        |                    -39   -43                       |
igr  n/a|    0     0     0     0   -45   -39   .01    5    5 |   -4642     109     18     58
        |                    -39    15                       |
jpl  123|   -1     2     5   -23    29   -46   .46   20   20 |     267    -395     17    110
        |                     62    23                       |
mit  276|    1     1    -2    43  -116   -18  -.28   12   11 |  -15055    -233     22    158
        |                      4    14                       |
ngs  218|    0    -3     0    64   260    24  -.15   13   10 |   16774   -7369   2087   3398
        |                     54    39                       |
sio  261|   -1     1     8   244   215    34  -.06   19   17 |     ---     ---    ---    ---
        |                   -156  -130                       |

Table 2.1572.6   GPS week: 1572   Day: 6   MJD: 55254.000                            

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  244|    0     0     3    -6   -62   -35  -.23   10   10 |     -66    -770     19     78
        |                     33     6                       |
emr   90|   -2    -1     5   -43   -53   -82   .37   19   19 |   -3470    2800     17     88
        |                      5   -57                       |
esa  130|    3     0    -3   -60   -23    17   .26    8    7 |    -668    1278     13     91
        |                     58    79                       |
gfz  198|    0    -2    -4  -105  -109    29  -.20   11   11 |     662    -724     25     93
        |                     43     1                       |
grg  106|    0     0     9    47  -112    22   .97   28   22 |      13    -177     77    205
        |                    -93    24                       |
igr  n/a|    0     1    -1   -35   -48    10  -.03    6    6 |   -4994    3572     20     62
        |                     23     2                       |
jpl  123|    0     0     8     9    44   -16   .55   20   20 |    -793    2957     19    110
        |                     47   -34                       |
mit  276|    0     1    -1    41  -140    -2  -.24   11   10 |     -41    -121     21    137
        |                     -7    26                       |
ngs  218|    0     0    -4    62   278    10  -.19   11    8 |     -48    -837   2279   4055
        |                     13   -59                       |
sio  261|    0     1     9   218   218    59  -.01   21   19 |     ---     ---    ---    ---
        |                   -151  -134                       |

       
       
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 3.1572.0   GPS week: 1572   Day: 0   MJD: 55248.000                            

        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  |   22  ---  ---  ---  ---   58  ---   16   36  ---   18 |    18  ---  ---  ---  ---   42  ---   17   25  ---    15
   2  |    9   20    9   11   27    5   27    7   12   26    5 |    20   27   22   21   32   21   29   22   26   28    20
   3E |   10   19    9   12   20    9   16   24   26   17    6 |    34   35   31   31   32   31   36   38   44   32    32
   4  |    7   11    4    7   13    5    9   10    9   10    3 |    30   30   32   37   28   32   28   39   36   26    31
   5  |    8   19    6   10   31    5   19    7   12   24    4 |    21   31   26   26   42   25   31   23   28   23    24
   6E |   11   19    8   12   31    7   18   23   18    9    5 |    24   29   19   27   89   22   32   27   32   21    21
   7  |    8   21    9   10   25    5   17    9   11   16    4 |    21   30   23   26   39   24   29   24   28   27    24
   8  |    8   12    5   10   13    3    9    9    8   15    3 |    14   19   14   17   22   14   20   19   17   17    14
   9  |    8   11    4    6   15    3   10    7   10   15    3 |    19   25   20   17   30   19   23   19   20   23    18
  10  |    6   15    6   10   12    3    8    6   10   20    3 |    20   23   28   28   26   22   20   25   30   18    23
  11  |   13   19    7   12   31    4   21   13   13   17    5 |    22   34   31   30   47   25   34   31   29   21    25
  12  |    7   21    9   12   21    6   23   11   12   25    5 |    20   30   21   22   36   19   34   20   27   18    21
  13E |    9   18    9   24   23    3   19   15   12   14    5 |    15   27   19   31   33   20   30   23   28   23    19
  14E |    8   23    8    9   20    5   18    8   14   12    4 |    18   35   19   20   30   20   28   21   29   23    19
  15E |    9   24   10   17   54    4   19    9   10   16    5 |    11   29   13   19   44   13   22   18   18   20    13
  16  |    9   26   10   14   28    5   30   12   11   21    6 |    18   36   20   17   36   18   37   20   20   21    20
  17E |    7   17    8    8   16    4   23   11   15   11    4 |    57   54   52   57   44   55   55   64   60   58    56
  18  |    8   20    8   13   23    5   21    7   10   19    4 |    25   28   26   30   30   25   29   28   25   27    24
  19E |    9   21    9   14   33    5   25   13    8   11    5 |    34   39   36   34   43   33   40   37   35   34    34
  20  |   10   18   10   17   28    5   19   12   10   23    5 |    28   34   31   36   39   28   31   35   35   26    28
  21  |    9   19   10   10   27    7   26   15   11   35    6 |    40   45   42   44   49   40   47   34   43   43    40
  22  |    6   15    6   10   25    5   21    7   11   13    4 |    26   31   28   34   34   26   30   31   28   33    28
 X23E |    8   26    9   23   40    6   31   11    9  ---    6 |    34   44   33   41   53   35   47   33   42  ---    35
  24  |    7   13    7    9   17    5   12    9    7    9    3 |    31   29   35   38   35   31   29   32   36   30    33
 X25  |    6  ---  ---  ---  ---  128  ---  ---  ---  ---    0 |    24  ---  ---  ---  ---   95  ---  ---  ---  ---    26
  26E |   13   20    9   10   18    5   14   20   15   22    5 |    63   73   68   65   78   65   71   59   60   69    64
  27  |    7   10    4    7   14    3    9    7   12   22    3 |    20   29   22   21   34   22   25   20   21   30    20
  28  |    7   17    7   12   25    4   17    9   10   19    4 |    17   28   22   18   33   19   28   22   20   24    18
 X29E |    8   16    8   10   24    5   26    9    8  ---    4 |    38   41   38   43   46   40   47   41   44  ---    40
  30  |    6   14    6    7   14    6   11   10    9    9    3 |    21   24   25   19   51   20   19   22   23   17    21
  31  |    8   23    5   13   27    6   20   12    8   13    4 |    15   28   20   22   35   14   27   17   20   16    17
  32  |    8   16    9   10   23    5   20   12    9   23    4 |    14   21   20   20   29   13   19   18   18   18    14
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |    9   18    8   12   25    5   19   12   12   18      |T   25   32   27   29   39   29   32   28   30   27    26
 WRMS |    8   18    7   12   21    5   19   10    9   15      |NE  22   29   25   26   35   27   28   24   26   24    22
 MEDI |    8   19    8   10   23    5   19   10   11   16      |MD  21   30   25   27   35   24   29   24   28   23    23

Table 3.1572.1   GPS week: 1572   Day: 1   MJD: 55249.000                            

        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  |   15  ---  ---  ---  ---   35  ---   18   31  ---   15 |    24  ---  ---  ---  ---   36  ---   21   25  ---    18
   2  |    8   21    9   12   27    6   27    9   10   23    5 |    15   25   18   17   31   16   27   16   18   22    15
   3E |   11   21    8   11   21    6   16   28   37   16    7 |    29   34   25   30   29   27   27   29   47   29    27
   4  |    7   17    6   12   16    7   13   12   10   10    4 |    30   32   27   34   22   32   25   35   34   26    28
   5  |   10   19   11   10   26    6   24   13   12   21    5 |    20   28   26   22   37   22   31   18   22   21    20
  X6E |    8   23  ---   33  440   13  ---   32   22  ---   12 |    21   31  ---   37  370   23  ---   28   32  ---    20
   7  |    7   18    6   11   25    6   17   12   12   15    4 |    18   27   19   15   37   16   28   20   20   20    17
   8  |    8   15    6   12   11    6   15    9   12   12    4 |    14   24   12   18   23   12   20   19   16   14    13
   9  |    6   13    7   12   18    6    9   12   12   16    4 |    20   25   21   25   31   20   25   16   18   24    18
  10  |    6   12    8    9   15    6   13   10   15   16    4 |    17   20   22   20   22   20   21   21   24   20    17
  11  |    9   18   10    9   33    7   23   14   16   17    5 |    17   29   24   22   48   17   32   23   25   15    18
  12  |    8   22   10   16   25    5   23   13   15   23    5 |    16   31   18   18   39   17   30   18   24   18    16
  13E |    7   24   10   17   19    7   24   16   12   11    5 |    11   28   17   17   30   11   25   17   19   18    13
  14E |    7   22   12    9   25    5   20   12    8   17    4 |    14   30   16   15   29   15   22   16   20   22    14
  15E |   12   22   11   12   24    6   17   10   19   17    5 |    20   27   21   21   32   17   24   25   22   23    18
  16  |    8   22    9   15   26    6   27   13   12   20    5 |    13   27   19   16   31   14   28   17   26   17    16
  17E |    8   23    8    9   23    6   25   20   14   12    5 |    47   46   44   44   50   44   46   45   51   45    45
  18  |    8   19   10   15   25    6   22    9   11   20    5 |    18   29   24   25   33   21   30   20   25   22    21
  19E |    9   16   12   14   35    6   25   18   17   12    5 |    20   30   25   25   45   20   28   23   25   29    22
  20  |    6   18   10   14   32    8   21   14   12   22    5 |    18   26   23   21   35   18   27   22   19   15    17
  21  |   14   21   13   10   25    6   27   15   18   29    6 |    24   27   23   21   32   20   25   20   29   34    21
  22  |    6   16   10    9   26    8   23   10   12   14    4 |    20   25   24   22   32   19   26   20   25   23    20
  23E |    6   24    9   16   48    6   27   13   11   11    5 |    23   33   27   27   41   24   30   23   27   33    24
  24  |    8   13    9   10   23    4   14   13   12   12    4 |    25   25   29   30   30   25   24   26   30   26    27
 X25  |    6  ---  ---  ---  ---   56  ---  ---  ---  ---    0 |    13  ---  ---  ---  ---   30  ---  ---  ---  ---    14
  26E |   14   15    9   14   17    8   13   18    7   19    5 |    60   66   63   64   69   62   67   63   61   65    61
  27  |    6   12    7   12   18    6    9   13   11   21    4 |    27   30   25   30   34   27   32   26   23   34    25
  28  |    7   18    7   12   28    6   18   10   15   18    4 |    15   27   15   16   33   14   24   15   20   17    13
 X29E |   10   18   10   21   21    5   29   12    8  ---    6 |    29   33   31   30   36   31   39   29   32  ---    30
 X30  |   12   15  ---   35   23   10  ---   13   14  ---    9 |    18   22  ---   35   50   17  ---   16   20  ---    14
  31  |   10   26   13   13   28    8   25   15    8   13    5 |    11   28   17   15   36   12   25   15   19   13    12
  32  |    8   17    7    8   22    7   19   12   11   23    4 |    16   21   16   18   31   15   21   19   14   22    14
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |    9   19    9   12   26    6   21   14   14   18      |T   21   29   23   25   46   22   28   23   26   24    20
 WRMS |    8   19    9   12   23    6   21   13   11   15      |NE  18   26   21   22   33   20   26   20   22   21    17
 MEDI |    8   18    9   12   25    6   21   13   12   17      |MD  18   28   23   22   33   20   27   20   24   22    18

Table 3.1572.2   GPS week: 1572   Day: 2   MJD: 55250.000                            

        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  |   14  ---  ---  ---  ---   49  ---   20   23  ---   13 |    25  ---  ---  ---  ---   43  ---   20   27  ---    19
   2  |    8   20    5   15   25    4   25   10   13   24    5 |    19   29   19   22   32   19   27   20   21   24    18
   3E |   11   21    8   15   19    9   18   24   23   14    6 |    31   31   24   26   26   27   26   26   35   26    26
   4  |    6   13    6   14   15    5   12   13   10   13    4 |    23   26   25   31   25   25   24   33   30   26    25
   5  |   10   19    8   15   27    4   24   11   13   19    5 |    15   29   23   24   33   19   28   20   23   20    19
  X6E |   10   22    8   14  144    7  ---   19   18   11    5 |    19   26   20   21  155   19  ---   18   31   25    19
   7  |    7   18   10   17   25    5   18   13   13   15    5 |    18   29   23   21   38   21   29   15   23   18    18
   8  |    9   11    6   15   11    5   12    8   14   12    4 |    12   20   13   17   22   14   19   16   19   17    13
   9  |    6   16    7   12   18    4   10   10   15   16    4 |    22   26   27   29   36   21   29   23   28   24    23
  10  |    8   13    5   13   16    3   14    9    9   13    3 |    15   18   20   23   18   17   18   21   18   16    17
  11  |    7   15    7   15   37    4   24   13   10   16    4 |    18   31   25   27   50   22   33   24   24   18    21
  12  |    8   25    7   16   26    5   25   15   10   23    5 |    18   34   22   21   39   18   33   18   26   15    20
  13E |    8   22    8   15   20    6   20   12   12   11    4 |    16   30   21   25   34   21   27   22   24   24    19
  14E |    7   17    8   16   24    3   18    9   11   14    4 |    14   26   18   22   27   16   22   16   24   20    17
  15E |    8   18    6   18   31    5   20   10   15   16    4 |    20   26   23   29   36   23   25   30   24   26    20
  16  |    8   23    8   16   24    4   31   12   11   20    5 |    15   29   21   18   30   15   32   18   23   20    20
  17E |   10   16   17   15   54    6   26   12   13   12    5 |    39   39   40   42   46   37   40   43   42   39    37
  18  |    9   20    6   11   24    4   23    8   14   20    4 |    20   32   25   23   37   22   30   22   28   24    23
  19E |    6   16    7   14   34    4   28   17    8   12    4 |    24   33   30   31   44   29   33   31   32   34    30
  20  |    7   18    9   13   36    5   23   12   16   23    5 |    20   29   30   24   41   22   29   27   23   20    22
  21  |   12   20   10    9   27    4   25   10   11   27    5 |    21   26   25   22   30   19   26   20   30   29    22
  22  |    7   15    7   12   22    6   23    8   13   14    4 |    22   27   23   30   29   24   27   27   28   28    23
  23E |    7   26   10   19   46    5   31   10   14    8    5 |    25   35   25   34   57   26   35   25   32   22    24
  24  |    8   13    7   13   20    4   16   11   12    9    4 |    23   24   31   29   33   25   23   23   33   24    27
 X25  |    5  ---  ---  ---  ---   32  ---  ---  ---  ---    0 |    22  ---  ---  ---  ---   35  ---  ---  ---  ---    25
  26E |   11   20    7   12   21    4   17   11   13   16    4 |    37   50   44   42   43   39   50   40   46   42    40
  27  |    5   16    7   12   17    4   10    8   12   21    4 |    19   22   24   23   30   18   26   21   29   27    21
  28  |    7   15    5   18   26    6   18   10   12   19    4 |    12   25   16   25   33   14   25   15   16   18    13
 X29E |   13   19    6   11   21    8   31   12   10  ---    5 |    35   35   31   31   42   33   40   33   39  ---    33
 X30  |   16   20  ---  ---  201   19  ---   40   25  ---   15 |    20   24  ---  ---  180   21  ---   44   31  ---    18
  31  |    8   21    8   16   29    5   23   15   15   12    5 |    16   28   19   21   36   15   26   17   24   16    17
  32  |    7   16    9   13   27    5   19   10   16   22    5 |     9   19   16   24   29   12   17   19   16   23    11
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |    8   18    8   15   28    5   21   12   13   17      |T   20   28   24   26   43   22   28   24   27   23    21
 WRMS |    8   18    8   15   21    5   21   11   11   16      |NE  18   26   22   23   40   20   26   22   24   21    19
 MEDI |    8   18    7   15   25    5   20   11   13   15      |MD  20   28   23   24   34   21   27   22   27   24    20

Table 3.1572.3   GPS week: 1572   Day: 3   MJD: 55251.000                            

        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  |   16  ---  ---  ---  ---   19  ---   19   24  ---   14 |    20  ---  ---  ---  ---   27  ---   21   26  ---    16
   2  |    8   24    8   13   25    4   24   10    9   25    5 |    19   30   21   21   31   20   28   22   18   24    19
   3E |   13   19    8   11   18    8   17   24   21   21    6 |    36   41   32   39   33   36   37   36   48   35    36
   4  |    6   12    5   11   14    5   10   13   11   12    3 |    26   28   24   35   28   27   26   32   24   27    25
   5  |    9   17    7   10   23    5   19   13   10   20    4 |    19   29   26   26   36   23   31   23   23   22    22
   6E |   10   19    8   13   16    7   17   21   19   15    5 |    26   33   22   28   51   27   24   27   42   23    27
   7  |    6   18    5   11   23    6   18   16    8   15    4 |    20   31   21   24   37   21   29   22   20   20    21
   8  |    7   10    4   10   12    6    9    7    9   13    3 |    11   20   14   19   20   13   20   18   16   17    13
   9  |    6   12    6    7   16    4    8    6   12   13    3 |    29   30   31   28   35   27   31   27   30   28    27
  10  |    7   13    4   10   14    3   12   11    9   15    3 |    19   23   24   25   23   21   24   24   25   17    20
  11  |    7   15    5   11   34    5   23   15   16   16    4 |    18   31   25   27   46   20   28   25   23   21    20
  12  |    7   23    5   13   21    6   24   15    9   20    5 |    16   32   19   18   33   16   31   18   20   11    17
  13E |    7   16    7   18   22    3   20   15    7   12    4 |    28   32   24   34   35   27   37   31   30   29    27
  14E |   10   17    9   11   22    3   22   13   10   15    4 |    18   29   22   21   28   20   29   17   21   22    19
  15  |   16   23    7   12   21    5   19    9   13   15    5 |    43   57   53   60   61   52   51   52   51   50    49
  16  |    8   24    9   11   26    5   27   14   12   21    5 |    17   32   24   23   33   22   31   23   24   20    22
  17E |    8   16    7    9   22    4   26   13   13    9    4 |    48   45   42   48   38   44   46   50   46   45    44
  18  |    9   20    7   17   22    3   23   10   11   21    5 |    20   29   23   29   32   21   28   25   23   21    22
  19E |    7   19    8   12   43    6   27   15   11   11    5 |    41   48   45   51   65   47   49   47   51   49    47
  20  |    9   18    8   12   32    5   19   12    8   23    4 |    26   31   25   30   43   24   32   30   28   25    25
  21  |    7   18   11   11   30    4   24   11   17   26    5 |    19   26   22   21   32   19   28   17   29   26    19
  22  |    9   16    6   12   22    3   22   10    9   15    4 |    23   29   27   28   32   23   29   28   26   29    26
  23E |    8   23    8   16   51    3   29   13   11   10    5 |    39   42   34   41   56   37   48   39   42   31    38
  24  |    8   12    6    9   16    4   12   11   15   10    3 |    23   27   30   31   26   27   27   24   37   22    28
 X25  |    5  ---  ---  ---  ---   76  ---  ---  ---  ---    0 |    26  ---  ---  ---  ---   54  ---  ---  ---  ---    28
  26E |   10   16   10   17   24    4   15   14   15   16    5 |    61   66   65   64   69   60   67   59   58   62    62
  27  |    6   11    5    7   16    4   10    9   10   20    3 |    29   34   32   33   39   29   35   30   33   35    30
  28  |    8   17    8   12   22    5   22   10    9   19    4 |    17   28   19   23   31   15   29   17   21   18    16
 X29E |   11   20    5   13   20    7   30   17   11  ---    5 |    26   33   28   28   31   27   35   31   32  ---    28
 X30  |    9   20   10   17  ---    8  ---   12   15  ---    6 |    20   19   25   24  ---   19  ---   24   32  ---    21
  31  |    8   22    7   13   26    4   22   17    9   14    5 |    15   26   19   19   36   14   28   18   19   16    16
  32  |    7   19    5   11   22    7   16   12   13   22    4 |    18   25   18   25   31   19   22   23   26   26    18
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |    8   18    7   12   25    5   20   13   12   17      |T   25   32   27   30   37   27   33   28   30   27    26
 WRMS |    8   18    7   12   19    5   20   13   10   16      |NE  20   28   23   25   32   22   28   23   24   22    21
 MEDI |    8   18    7   11   22    5   20   13   11   15      |MD  20   30   24   28   33   23   29   25   26   24    22

Table 3.1572.4   GPS week: 1572   Day: 4   MJD: 55252.000                            

        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  |   15  ---  ---  ---  ---   28  ---   19   31  ---   15 |    16  ---  ---  ---  ---   30  ---   20   24  ---    14
   2  |    9   23    9   13   24    8   22   10   11   28    5 |    15   29   17   20   31   18   28   17   21   21    16
   3E |   15   24   15   13   19    7   15   24   23   23    7 |    29   37   25   28   26   29   32   35   35   31    26
   4  |    8   12    9   12   12    5   11   11    9   10    3 |    23   25   19   28   23   23   23   27   24   23    22
   5  |    8   18    6   12   25    5   21   11   10   20    4 |    19   29   26   27   39   21   30   23   22   23    22
   6E |   13   21   13   14   23    6   17   21   21   19    6 |    21   29   19   26   31   20   26   29   29   26    19
   7  |    6   20    9    9   25    5   19   19   10   15    5 |    18   28   22   19   36   18   27   22   23   18    18
   8  |    7   11    8    7   13    4   10    9    9   14    3 |    20   24   19   21   27   18   22   21   21   22    18
   9  |    8   13    6    7   18    3    8    5   14   14    3 |    22   27   21   23   33   22   26   21   21   27    20
  10  |    7   15    6   13   14    5   10    8    6   14    3 |    16   23   21   27   22   18   21   21   19   19    18
  11  |    7   19    8   11   37    5   21   14   12   21    5 |    18   30   28   25   50   21   31   23   23   20    21
  12  |    9   19    7   13   25    5   22   11   14   22    5 |    17   27   18   20   36   16   30   19   19   14    16
  13E |    7   18   10   19   20    6   19   14   10   10    5 |    25   34   31   29   41   25   32   27   31   28    26
  14E |    8   19    5   10   22    6   20   12   12   18    4 |    22   31   23   26   37   25   32   28   24   32    24
  15  |   12   27   10   10   27    7   20   10   12   15    5 |    22   33   28   25   38   25   28   28   22   22    23
  16  |    9   21   10   15   25    5   29   12   12   22    5 |    16   30   20   16   30   16   32   22   19   22    17
  17E |    5   16    9   12   22    5   23   17   10   11    4 |    40   42   36   40   39   39   41   45   40   43    39
  18  |   10   20    9   15   24    5   21    9   15   22    5 |    19   28   25   29   32   21   30   23   22   21    21
  19E |   10   17   11   10   38    5   26   16   10   10    5 |    39   44   41   41   48   39   45   46   41   42    40
  20  |    9   16   10   14   34    7   20   12   12   26    5 |    24   34   30   29   44   26   34   28   29   24    25
  21  |    8   18   11   11   40    9   23    8   18   29    5 |    18   23   17   18   34   16   25   16   25   29    16
  22  |    9   21    9   11   26    5   21   10    9   15    4 |    23   30   25   28   31   22   30   26   27   26    24
  23E |    7   22   12   15   49    6   30   11   12   13    5 |    34   40   38   37   48   33   41   31   39   31    34
  24  |    7   10    8    9   19    6   11    9   14   11    3 |    22   24   22   28   24   22   24   24   27   22    23
 X25  |    6  ---  ---  ---  ---   76  ---  ---  ---  ---    0 |    25  ---  ---  ---  ---   33  ---  ---  ---  ---    26
  26E |   13   18    8   12   21    4   12   11   13   17    4 |    31   44   32   34   50   34   40   32   37   39    33
  27  |    6   12    5    7   17    3   10    8   14   20    3 |    22   27   21   24   31   23   27   19   23   30    20
  28  |    7   23    9   14   23    3   22    9   11   19    5 |    17   31   18   22   31   16   27   18   18   13    15
 X29E |   10   18    8    9   19    4   25   17   11  ---    5 |    30   34   30   29   30   30   38   33   31  ---    29
  30  |    6   11    6   10   17    4   12   11   10   12    3 |    15   19   17   20   40   15   19   18   14   17    13
  31  |    7   20   10   11   25    6   23   11   12   14    4 |    12   25   17   16   35   14   26   15   15   14    13
  32  |    9   20   11    9   22    7   18    9   11   26    5 |    14   23   22   18   27   14   21   17   19   20    15
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |    9   18    9   12   26    5   19   13   13   18      |T   22   30   24   25   34   23   29   24   25   24    22
 WRMS |    8   18    9   12   22    5   19   11   10   17      |NE  18   26   21   22   32   20   26   20   21   21    18
 MEDI |    8   18    9   11   23    5   20   11   12   17      |MD  21   29   22   26   33   22   28   23   23   23    21

Table 3.1572.5   GPS week: 1572   Day: 5   MJD: 55253.000                            

        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  |   16  ---  ---  ---  ---   33  ---   16   14   23   10 |    18  ---  ---  ---  ---   30  ---   20   24    4    14
   2  |    8   24   10   14   24    4   26   10   11   26    5 |    20   29   23   21   30   20   26   20   26   28    21
   3E |   16   23   10   17   22    7   18   19   26   27    7 |    40   42   37   39   36   38   39   38   51   41    38
   4  |    8   10    4   11   13    3   11   10   10   10    3 |    19   19   19   22   15   19   16   22   26   21    19
   5  |    8   16    8   15   28    5   20   11   12   23    5 |    22   30   28   27   41   23   30   25   26   29    24
   6E |   13   21   10   16   22    7   18   17   20   19    6 |    32   32   27   32   25   30   27   30   43   30    29
   7  |    7   25   10   10   26    5   20   16   11   14    5 |    23   32   24   22   39   23   31   26   32   24    23
   8  |    7   13    8   10   13    4   12   13   12   14    4 |    12   21   16   17   21   12   21   15   19   20    12
   9  |    8   11   12   10   14    4   11    6   15   17    4 |    22   26   21   25   33   21   27   25   22   28    21
  10  |    6   13    5   12   15    3   12    7   11   17    3 |    17   20   23   22   21   19   18   20   22   23    19
  11  |    9   18    9   13   36    5   22   10   10   17    4 |    16   31   28   28   46   20   33   21   26   14    22
  12  |   10   20   10   12   24    4   20   11    9   24    5 |    14   27   18   19   34   15   29   15   20   15    15
  13E |    5   19    8   12   24    8   21   14   13   11    4 |    22   29   22   25   36   20   29   25   29   22    21
  14E |    8   21    6   11   26    6   26   13   10   16    5 |    19   25   17   20   33   20   28   27   30   29    20
  15  |   10   22   10   13   31    5   21   13   12   15    5 |    14   23   15   21   27   13   21   23   23   17    14
  16  |    8   23    7   15   25    6   30   13   13   25    5 |    21   31   24   23   36   23   35   23   28   23    22
  17E |    7   16    7   13   18    6   22   19   14    8    5 |    36   36   36   35   33   33   34   44   39   40    36
  18  |   10   19    6   14   25    5   21    9   14   21    5 |    15   27   21   24   31   19   30   20   28   22    20
  19E |   11   20    9   14   35    4   27   10    8   10    5 |    47   49   52   52   53   48   51   50   54   53    49
  20  |    7   17    9   15   39    7   21   11   11   26    5 |    21   28   27   29   41   21   31   21   26   18    22
  21  |   10   22    9   13   31    6   24    7   14   25    5 |    14   23   17   16   30   13   22   14   29   28    15
  22  |   10   18    7   11   24    4   22    9   12   15    4 |    23   25   23   25   29   21   26   26   32   26    23
  23E |    9   24    9   17   54    6   30   14   11   14    5 |    43   49   45   48   57   45   49   40   50   33    43
  24  |    7   12    4   12   24    5   14    7   12    8    3 |    16   19   22   21   27   18   18   19   26   18    18
 X25  |    5  ---  ---  ---  ---   54  ---  ---  ---  ---    0 |    31  ---  ---  ---  ---   32  ---  ---  ---  ---    32
  26E |   14   16    8   14   21    5   13   11   13   17    4 |    58   63   60   60   67   58   60   58   58   60    58
  27  |    7   12    9   10   13    4   10    8   14   22    4 |    23   28   20   26   32   23   29   26   26   31    22
  28  |   10   22   11   12   22    4   21   12   12   18    5 |    16   30   20   19   33   17   29   19   23   16    17
 X29E |   10   22    7   11   23    4   27   13   14  ---    5 |    26   33   25   26   29   26   35   28   35  ---    27
  30  |    5   15    8   11   16    3   12   10    8   14    3 |    14   21   19   13   35   13   18   14   21   16    15
  31  |    7   20    6   14   27    8   24   10   11   16    4 |    16   23   18   17   35   16   27   16   25   15    17
  32  |    6   17    7   13   28    6   18   11    9   26    4 |    20   25   20   21   30   19   26   19   28   26    21
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |    9   19    8   13   26    5   20   12   13   19      |T   23   29   25   26   34   24   29   25   30   25    24
 WRMS |    8   19    8   13   23    5   20   11   10   17      |NE  18   25   21   21   31   19   26   20   25   21    19
 MEDI |    8   19    8   13   24    5   21   11   12   17      |MD  20   28   22   23   33   20   29   23   26   23    21

Table 3.1572.6   GPS week: 1572   Day: 6   MJD: 55254.000                            

        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  ---  ---  ---  ---   24  ---  ---  ---  ---    0 |    19  ---  ---  ---  ---   30  ---  ---  ---  ---    17
   2  |   10   24    8   11   25    4   26   10    9   31    5 |    21   28   20   23   30   19   29   22   24   32    20
   3E |   18   23   10   17   27   10   18   18   21   32    7 |    42   43   38   43   39   41   41   39   42   40    38
   4  |   10   13    6    8   14    5   10    8    7   12    3 |    29   29   30   34   30   28   31   32   31   27    29
   5  |   10   19    9   10   25    8   19    9   11   24    4 |    25   33   33   33   39   29   31   29   28   30    27
   6E |   14   20    8   12   23    9   15   17   18   24    5 |    38   36   30   35   23   32   28   29   37   28    32
   7  |    9   24    7    6   29    7   21   11   12   14    4 |    38   52   42   43   60   40   47   42   41   38    40
   8  |    9   16    6    8   15    5   14   13   13   17    4 |    18   24   20   19   27   17   25   19   19   25    17
   9  |    9   17    5    9   18    4   15   15   13   22    4 |    33   33   31   26   36   26   34   24   29   27    27
  10  |    8   15    9    9   15    6   12    7   10   21    4 |    21   24   28   28   23   24   21   25   24   24    23
  11  |   12   17    8   10   31    4   19   13    7   18    4 |    23   36   31   30   48   25   35   30   29   21    28
  12  |   12   20    8   12   25    4   21   11   10   26    5 |    22   33   23   19   38   18   34   20   23   19    20
  13E |    6   16    6   14   23    6   21   11   10   13    4 |    23   29   19   23   33   20   34   22   27   24    21
  14E |   11   20    9    7   63    5   23   11    9   13    4 |    24   34   23   26   58   25   36   28   29   33    26
  15  |   11   26    6   10   31    6   16   10   11   18    5 |    18   30   26   29   36   25   25   27   26   23    22
  16  |    6   23    6   13   26    7   26   13   11   28    5 |    23   33   21   22   34   23   37   22   26   25    23
  17E |    6   17    9   12   22    6   23   16   12    8    5 |    54   49   49   53   50   50   51   54   49   49    49
  18  |   10   19    9   13   24    4   23    8   15   23    5 |    24   28   28   33   34   25   31   26   26   28    26
  19E |    8   22    8   12   30    7   29   10   14   13    5 |    47   51   45   52   58   48   51   52   50   49    49
  20  |   12   18    8   14   34    6   20   10    9   30    5 |    34   38   37   36   44   32   38   34   39   27    34
  21  |   14   22   12   11   32    8   27    8   11   27    5 |    25   27   25   23   34   20   29   21   25   30    22
  22  |   10   19    7   10   24    6   23    8   10   15    4 |    31   31   35   39   35   30   32   34   36   34    33
  23  |    9   19    9   11   46    6   29   13    9   15    5 |    41   44   38   38   59   38   49   33   41   28    37
  24  |    9   13    6    9   23    6   13   10   10    8    3 |    30   31   35   37   37   32   32   35   37   33    34
 X25  |    6  ---  ---  ---  ---   69  ---  ---  ---  ---    0 |    36  ---  ---  ---  ---   35  ---  ---  ---  ---    37
  26E |   13   21   10   13   24    5   16   11   11   20    5 |    61   68   64   59   69   59   68   58   60   56    59
  27  |    8   16    4    9   19    5   12    7   12   23    4 |    27   30   25   21   34   21   30   20   24   30    23
  28  |    5   24    7   10   24    4   23    9   11   16    4 |    21   35   26   21   39   20   34   19   22   18    19
 X29E |   10   17    6   10   19    4   26    8    9  ---    4 |    38   44   36   39   43   37   47   42   44  ---    38
  30  |    7   11    6    9   19    6   11    8    7   16    3 |    23   26   25   24   36   21   24   24   22   20    22
  31  |    7   22    7   10   29    6   21    8    8   18    4 |    21   29   22   22   39   20   27   19   20   20    20
  32  |    9   15    8   12   24    7   19   13    9   30    5 |    22   26   24   28   30   19   22   21   23   26    21
------+--------------------------------------------------------+---------------------------------------------------------
 RMS  |   10   19    8   11   28    6   20   11   11   21      |T   29   35   30   31   39   29   35   30   31   29    29
 WRMS |   10   19    7   11   22    6   20   10    8   19      |NE  25   31   28   28   36   25   31   25   27   26    25
 MEDI |    9   19    8   10   24    6   20   10   10   18      |MD  25   33   28   29   36   25   32   27   28   28    26



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 4.1572   GPS week: 1572   MJD: 55248.0-55254.0

CENT| CLK EPO  |        BRUS       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3028 |U    8     9    28 |U   12    14    41 |U    6     6    16 |
emr | emr 2864 |    13    11    32 |U   19    17    66 |     9     9    21 |
esa | esa 2838 |     9    10    30 |U   13    15    47 |     7     6    17 |
gfz | gfz 2848 |U   10    11    31 |U   23    25    91 |     9     9    19 |
grg | grg 2866 |    10     9    29 |U   15    18    54 |    46    36    89 |
igr | igr 2860 |    13    12    34 |    14    16    52 |     7     6    17 |
igs | igs 2842 |    12    10    31 |    14    16    50 |     7     5    15 |
jpl | jpl 2798 |U   14    15    39 |U   21    26    89 |U    8     8    22 |
mit | mit 2962 |U   12    10    31 |U   24    23   107 |U   23    12    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 5.1572.0   GPS week: 1572   Day: 0   MJD: 55248.0

CENT| CLK EPO  |        BRUS       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3023 |     5     8    18 |    10    12    42 |     5     5    12 |
emr | emr 2868 |     7    11    28 |    17    12    56 |     8     8    21 |
esa | esa 2880 |     8    11    23 |    11    13    45 |     6     5    16 |
gfz | gfz 2867 |     8    10    18 |    60    55   275 |    11    10    18 |
grg | grg 2880 |     8    12    24 |    15    17    58 |    11     9    28 |
igr | igr 2832 |     7     5    18 |    11    12    46 |     6     6    17 |
igs | igs 2841 |     5     8    18 |    10    12    40 |     7     6    14 |
jpl | jpl 2863 |     7    11    30 |    51    60   301 |     8    10    26 |
mit | mit 2976 |     6     7    15 |    52    60   310 |     7     7    21 |

Table 5.1572.1   GPS week: 1572   Day: 1   MJD: 55249.0

CENT| CLK EPO  |        BRUS       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3011 |     7     4    22 |    10    15    38 |     5     5    14 |
emr | emr 2853 |    11     7    23 |    17    12    66 |     9     6    15 |
esa | esa 2688 |     9     9    26 |    11    15    43 |     7     7    18 |
gfz | gfz 2837 |    11     6    22 |    15    22    67 |    10     9    16 |
grg | grg 2880 |     8     5    21 |    11    20    45 |   188   144   323 |
igr | igr 2857 |    15    15    42 |    12    14    55 |     7     5    17 |
igs | igs 2821 |     9     6    20 |    12    13    49 |     7     5    16 |
jpl | jpl 2680 |    20    36    67 |    10    17    52 |     9     8    24 |
mit | mit 2976 |     8     5    18 |    17    17    71 |    97    33   238 |

Table 5.1572.2   GPS week: 1572   Day: 2   MJD: 55250.0

CENT| CLK EPO  |        BRUS       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3025 |     6    10    31 |    12    13    33 |     7     9    13 |
emr | emr 2862 |    24    16    35 |    23    32    68 |    10     9    25 |
esa | esa 2784 |     7    10    33 |    15    22    39 |     8     7    17 |
gfz | gfz 2771 |    15    16    43 |    18    27    45 |    10    11    26 |
grg | grg 2880 |     8    10    29 |    18    26    48 |  ----  ----  ---- |
igr | igr 2848 |    21    16    38 |    19    26    56 |     8     6    18 |
igs | igs 2774 |    30    14    42 |    19    29    49 |     8     8    18 |
jpl | jpl 2678 |    24    13    36 |    20    33    56 |     9     8    20 |
mit | mit 2976 |    26    17    34 |    21    20    73 |  ----  ----  ---- |

Table 5.1572.3   GPS week: 1572   Day: 3   MJD: 55251.0

CENT| CLK EPO  |        BRUS       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3028 |     5     8    23 |    13    12    39 |     5     7    17 |
emr | emr 2864 |     9     7    30 |    22    17    47 |     9     8    21 |
esa | esa 2880 |     7     7    24 |    16    12    51 |     6     6    19 |
gfz | gfz 2863 |     7    11    37 |    22    22    56 |     7     8    17 |
grg | grg 2784 |     9     9    32 |  ----  ----  ---- |  ----  ----  ---- |
igr | igr 2852 |    15    18    30 |    17    14    42 |     6     7    20 |
igs | igs 2879 |     7     7    28 |    16    14    41 |     6     5    16 |
jpl | jpl 2771 |     7     8    28 |    20    19    47 |     7     5    18 |
mit | mit 2976 |     8     8    32 |    25    17    65 |     9     9    20 |

Table 5.1572.4   GPS week: 1572   Day: 4   MJD: 55252.0

CENT| CLK EPO  |        BRUS       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3053 |     7     5    17 |    14    15    59 |     8     7    20 |
emr | emr 2868 |    10    10    19 |    21    21   111 |    10    11    25 |
esa | esa 2880 |     9     7    16 |    14    14    76 |     8     6    20 |
gfz | gfz 2869 |     8     9    19 |    17    18    90 |    10    15    28 |
grg | grg 2880 |     8     5    20 |    20    17   101 |    13    13    43 |
igr | igr 2903 |     7     6    16 |    17    17    85 |     9     9    20 |
igs | igs 2829 |     9     8    17 |    18    15    92 |     9     6    16 |
jpl | jpl 2865 |     9    11    25 |    21    22    88 |    10    11    27 |
mit | mit 2976 |    15    10    38 |    20    17   109 |    10     8    23 |

Table 5.1572.5   GPS week: 1572   Day: 5   MJD: 55253.0

CENT| CLK EPO  |        BRUS       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3022 |    21    19    64 |    10    12    35 |     7     6    19 |
emr | emr 2868 |    20    17    70 |    18    13    64 |     8    12    26 |
esa | esa 2880 |    20    19    71 |    10    11    36 |     6     5    14 |
gfz | gfz 2865 |    18    16    60 |    16    16    59 |     7     4    13 |
grg | grg 2880 |    21    17    62 |    11    11    34 |     9     8    28 |
igr | igr 2860 |    19    18    73 |    10    11    35 |     6     6    14 |
igs | igs 2908 |    20    18    68 |    11    12    42 |     7     5    16 |
jpl | jpl 2867 |    22    19    70 |    10    14    32 |     8    10    25 |
mit | mit 2976 |    19    17    60 |    14    14    65 |    10     9    25 |

Table 5.1572.6   GPS week: 1572   Day: 6   MJD: 55254.0

CENT| CLK EPO  |        BRUS       |        TOW2       |        WILL       |
----+----------+-------------------+-------------------+-------------------+
cod | cod 3040 |     6     7    19 |    15    18    38 |     5     4    18 |
emr | emr 2868 |     9     9    23 |    17    16    49 |     8     7    17 |
esa | esa 2880 |     6     7    17 |    14    16    42 |     6     4    15 |
gfz | gfz 2868 |     6     9    19 |    17    19    43 |     8     5    13 |
grg | grg 2880 |     7     7    19 |    13    14    40 |     9     5    25 |
igr | igr 2873 |     6     8    20 |    14    17    43 |     6     5    15 |
igs | igs 2845 |     8     9    24 |    13    17    39 |     5     3    12 |
jpl | jpl 2863 |     8     8    20 |    17    16    46 |     7     7    18 |
mit | mit 2880 |     7     6    19 |    16    18    54 |     7     9    21 |


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 6.1572   GPS week: 1572   MJD: 55248.500-55254.500

                                                         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       9      90      93     -3 |       4     11
            |      21      23     120      82      4 |       1
emr   uuuuu |      -8      13     146      19    -15 |      24     28
            |      41      22     110     161      6 |       4
esa   uuuuu |     -44     -20      76     -79      4 |       1      9
            |      27      20      44      91      5 |       2
gfz   uuuuu |      37      11     -97     -66     -4 |       6     11
            |      23      24      80      51      7 |       2
grg   --xxx |      --      --      56     151      9 |      11     26
            |      --      --      66      58     16 |       3
igr   xxxxx |      -9      52      29     -29     -9 |       6     13
            |      15      29      77      78      4 |       2
irf   xxxxx |       3      28     -90      65     -4 |       5     15
            |      11      20      52      65      3 |       2
jpl   uuuuu |      15     -21     119      68      2 |      -4     15
            |      32      18     142     138     10 |       4
mit   uuuuu |      -8      25    -126     257     -3 |      16     23
            |      17      29      72     138      7 |       4
ngs   uuuuu |     -24       1     -31    -155     -1 |      -4     10
            |      40      47     116      91      5 |       0
sio   uxuuu |     120     180     -43      71     -6 |      32     36
            |      27      29      81     111      5 |       3


Table 7.1572.0   GPS week: 1572   Day: 0   MJD: 55248.500

                                                         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      16      83     156     -7 |       4     11
emr   uuuuu |       4      -6     296      17     -7 |      27     30
esa   uuuuu |     -24      16     112    -182      3 |      -3     12
gfz   uuuuu |      65      22    -189      -8     -3 |       7     11
grg   --xxx |      --      --      82     241     21 |      11     27
igr   xxxxx |       7      43      97     -48    -15 |       8     13
irf   xxxxx |     -14      14    -107      77     -5 |       1     17
jpl   uuuuu |      46      -9      81     152     -6 |       2     18
mit   uuuuu |     -29       7    -133     277      1 |      10     23
ngs   uuuuu |     -59     -46     -57     -65      3 |      -5      9
sio   uxuuu |      69     158     -63      -3     -4 |      26     34

Table 7.1572.1   GPS week: 1572   Day: 1   MJD: 55249.500

                                                         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      22      25      28     -9 |       5     11
emr   uuuuu |       9       6     171     -20    -15 |      28     31
esa   uuuuu |     -80     -29      52    -166      6 |       0     10
gfz   uuuuu |      50     -20    -132     -85     -3 |       8     11
grg   --xxx |      --      --     -41     197      1 |      14     29
igr   xxxxx |      -5      25     150    -169    -10 |       8     13
irf   xxxxx |       8      32    -143     103     -5 |       4     15
jpl   uuuuu |      54      -4     224      65      2 |       1     18
mit   uuuuu |      12      33    -235     324      2 |      13     22
ngs   uuuuu |     -58      36     106     -62     -2 |      -4      9
sio   uxuuu |     129     187    -111     109     -2 |      29     35

Table 7.1572.2   GPS week: 1572   Day: 2   MJD: 55250.500

                                                         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      47     -95     147     -3 |       4     12
emr   uuuuu |     -32      -2     150    -176    -12 |      27     30
esa   uuuuu |     -41     -30      44     -11     11 |       1      9
gfz   uuuuu |      53      41    -175     -81    -15 |       8     11
grg   --xxx |      --      --     139     119    -13 |      12     29
igr   xxxxx |       2      75     -21       4    -12 |       7     13
irf   xxxxx |      -5      71    -168      67      0 |       5     14
jpl   uuuuu |      21      -3     339      73     -8 |      -2     17
mit   uuuuu |     -12      79    -200     275      7 |      15     21
ngs   uuuuu |      -6     -63     122    -214      1 |      -4     10
sio   uxuuu |     103     240    -177     104      1 |      31     35

Table 7.1572.3   GPS week: 1572   Day: 3   MJD: 55251.500

                                                         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 |      20      10     151      41     -1 |       4     11
emr   uuuuu |     -56     -11     234     -81    -24 |      26     30
esa   uuuuu |     -17     -20      45     -73      0 |       2      8
gfz   uuuuu |      40      30    -134     -68      7 |       6     12
grg   --xxx |      --      --      66     154    -10 |       7     25
igr   xxxxx |     -31      90      40      -8     -8 |       6     13
irf   xxxxx |       2      13     -56     161     -2 |       6     13
jpl   uuuuu |      -6     -49     121     -78     -8 |      -6     16
mit   uuuuu |      -9     -13     -66     466      0 |      18     22
ngs   uuuuu |     -32      54    -136    -252      2 |      -4     10
sio   uxuuu |     122     153      41     242     -2 |      33     36

Table 7.1572.4   GPS week: 1572   Day: 4   MJD: 55252.500

                                                         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 |     -33       0     103     226     -1 |       4     10
emr   uuuuu |     -54      45     -46     -37    -21 |      23     26
esa   uuuuu |     -22     -46     148     -65      8 |       2      8
gfz   uuuuu |      33      -5     -13     -33     -6 |       6     12
grg   --xxx |      --      --     -15      77     24 |       8     25
igr   xxxxx |     -29      64      40     -73     -5 |       5     13
irf   xxxxx |      19      17     -32      85     -5 |       7     14
jpl   uuuuu |     -33     -26      73    -126      5 |      -9     15
mit   uuuuu |      14      15     -41     283     -5 |      20     23
ngs   uuuuu |     -43      41    -186    -145     -7 |      -4     10
sio   uxuuu |     146     161      25     143     -6 |      35     37

Table 7.1572.5   GPS week: 1572   Day: 5   MJD: 55253.500

                                                         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 |      13     -28      62      42     -3 |       4     10
emr   uuuuu |      16      37      75     101    -20 |      21     26
esa   uuuuu |     -41      -5      30      75      1 |       3      7
gfz   uuuuu |      18      22       8    -161     -1 |       4     11
grg   --xxx |      --      --      45      98     13 |      11     26
igr   xxxxx |      -4      61     -33       8     -8 |       4     13
irf   xxxxx |      11      22     -82     -11     -8 |       7     14
jpl   uuuuu |     -12     -40     118     109      4 |      -7     12
mit   uuuuu |      -3      18    -136     149    -12 |      21     23
ngs   uuuuu |     -28     -32      -1    -271      3 |      -5     11
sio   uxuuu |     141     178     -36     -16    -13 |      35     38

Table 7.1572.6   GPS week: 1572   Day: 6   MJD: 55254.500

                                                         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      -4     300      12      3 |       2     11
emr   uuuuu |      55      24     142     330     -9 |      17     26
esa   uuuuu |     -81     -29     104    -135     -1 |       3      8
gfz   uuuuu |      -3     -14     -43     -24     -6 |       2     11
grg   --xxx |      --      --     115     171     27 |      15     23
igr   xxxxx |      -4       6     -71      80     -3 |       2     14
irf   xxxxx |      -2      29     -40     -28     -8 |       6     15
jpl   uuuuu |      32     -18    -121     283     21 |      -7     10
mit   uuuuu |     -28      36     -69      27    -11 |      19     23
ngs   uuuuu |      57      16     -66     -77     -9 |      -5     11
sio   uxuuu |     132     180      23     -85    -13 |      33     37



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