[IGSREPORT-25822] Wk 1991 IGLOS Final Orbits

acc acc at igs.org
Sun Mar 25 03:47:44 PDT 2018


Author:   AC Coordinator / GA MIT                                              
sum-file Version 2.0
                                                                               
IGLOS Orbit Combination - Week 1991   (Mar 04, 2018 - Mar 10, 2018) 
                                                                               
Contact: acc at igs.org
                                                                               
                                                                               
COMBINATION STRATEGY:                                                            
---------------------                                                            
                                                                               
Ephemeris are combined as weighted averages computed over all centres.
Each centre and satellite is given a position weight computed from the
center's absolute deviation to the unweighted average orbit after removing
small differences in the reference frames. These weights were applied in a
second iteration to estimate Helmert transformation parameters for each
center. Finally the transformation parameters with respect to the combined
solution and the RMS of the fit are reported in Tables 2.1991.
For long arc computations the Earth Orientation Parameters (EOPs) are fixed
to the values of the final IGS (GPS) combination.                                                    
                                                                               
                                                                               
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.
                                                                               
  Weber R., 2000, IGS Technical Report 1999                                    
                                                                               
                                                                               
PRODUCTS GENERATED:                                                             
-------------------                                                             
                                                                               
The combined IGL-ephemerides are written to daily files in the SP3-format.
The satellite accuracy codes in the header are based on the weighted rms.
for each satellite. Note, that the result files contain all satellites
that were analysed by at least one center. We refer to the 'REMARKS' section
below, in case a satellite or center was excluded from the combination.
                                                                               
The following naming convention is used for the result files:
                                                                               
 igl1991[0-6].sp3  IGLOS-PP Glonass ephemerides files for days 0-6
                   of GPS Week 1991 in the SP3 format.
 igl19917.sum      Combination Report for GPS Week 1991.


    
    
REMARKS concerning the IGL Orbit Combination:                                  
---------------------------------------------

Starting 16-Sep-2012 (GPS Week 1706, day 0, MJD 56186) the CODE Analysis Center
began submitting two solutions: COD (3d SNX with 3d orbital arcs) and COF (1d
SNX with 1d orbital arcs). The COF clocks and orbits are included for
comparison only; the COD solution is included with weight.

 1. Broadcast (brd) orbits and clocks are included in the combination for
    statistics only.

 2. Having only a few satellites the mcc orbits are included in the combination 
    for statistics only. The grg orbits are introduced for the first time
    starting 02-Jan-2011 (GPS Week 1617) but only for statistics until
    22-May-2011 (GPS Week 1637). The bkg orbits were no longer included after
    21-May 2011 (GPS Week 1636). The emx orbits are introduced with full weight
    for the first time starting 11-Sep-2011 (GPS Week 1653).

 3. From 01-May-2005 (GPS Week 1321; MJD 53491) [IGSMAIL-5151] until 4-Nov-2006
    BKG, ESA, and CODE referred their GLONASS orbit products to the following
    satellite antenna offset (SAO) values (expressed in the spacecraft body
    frame):
    
      X/Y/Z =  0.000/0.000/0.000 meter for GLONASS and
      X/Y/Z = -0.545/0.000/0.000 meter for GLONASS-M SVs.
    
    Starting 5-Nov-2006 (GPS Week 1400, day 0, MJD 54044) until 16-Apr-2011
    (GPS Week 1631, day 6, MJD 55667) the absolute antenna model is introduced
    (IGSMAIL #5438). The antenna phase center offsets and phase center variations
    are given in the file:
        ftp://igs.org/igscb/station/general/igs05.atx
    These antenna calibrations are also used in the homogeneously reprocessed IGS
    products from GPS Weeks 730 to 1459 (1994-2007); see IGSMAIL #6136.
    Starting 17-Apr-2011 (GPS Week 1632, day 0, MJD 55668) the absolute antenna
    model is updated (IGSMAIL #6255 & #6374) as given in the file:
        ftp://igs.org/igscb/station/general/igs08.atx
    
    Starting 29-Jan-2017 (GPS Week 1934, day 0, MJD 57782) the absolute antenna
    model file has been updated to igs14.atx to be consistent with IGS14.
    See IGSMAIL #7399 for more information
        ftp://igs.org/pub/station/general/igs14.atx 

 4. The satellite clock values in the combined orbit files are taken from the
    broadcast files. The following gps/glonass time offsets were added to the
    broadcast clocks. Before GPS Week 1637, the time offsets were derived
    from the bkg summary files; starting Week 1637 the offsets are derived
    from the gfz summary files.
    
               Day | applied clock offset
               ----+---------------------
                0  |      0.3 ns
                1  |     -0.7 ns
                2  |      0.5 ns
                3  |      0.2 ns
                4  |     -6.8 ns
                5  |     -7.9 ns
                6  |     -7.5 ns

 5. The following orbit solutions were excluded from the combination
    because they were biasing the weighted average (generally indicated
    by long arc RMS).
    
               Day | Centre | PRN list
               ----+--------+---------------
                5  |  GRG   | R08

    
         
ORBIT COMBINATION AND EVALUATION STATISTICS:                                    
--------------------------------------------                                    
      
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 (Tables 1.1991, 1a.1991).
        
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 2.1991.0-6)                                                                                
    
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 3.1991.0-6). 
        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.
                                                                               
   
      
      
Table 1: Week 1991 summary.                      (Mar 04, 2018 - Mar 10, 2018)

Table 1.1991.a     GPS week : 1991   MJD: 58181.0-58187.0

         Mean and standard deviations of transformation parameters to the 
         combined IGL 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  n/a|    0    -1     0   -28   -29    48   .08   29   30 |   13804    -178  11417 130837
        |    0     0     3    23     7    16   .02           |   57882    1432
cof  n/a|    0     0    -1   -12     0    28   .14   31   32 |   13804    -179  11419 130839
        |    1     1     2    24    19    22   .04           |   57885    1427
emx  n/a|    0     0     3   -28    -6   -33   .06   24   24 |   22479     882  11410 130592
        |    1     0     1    21    15    23   .04           |   54466     890
esx  n/a|    0     0    -1    20    30    15   .15   17   16 |   -3240    -865   3337  11740
        |    0     0     1    16    17    21   .02           |   11223    2102
gfz  n/a|    0    -1    -1    25    40     7   .07   24   21 |       0    -431   3321   9487
        |    1     1     3    22    29    23   .04           |       0    1321
grg  n/a|    0    -1     8   -18   -46   -30  -.37  426   37 |   -2761    -750   3401   8784
        |    1     0     5    21    23    60   .07           |    3953    1454
iac  n/a|    0     0    -5     7    -7   -34  -.11   22   22 |   21127     119  11420 130448
        |    0     1     1    26    43    58   .04           |   57421     777
mcc  n/a|    0     0     0    60     8   690  -.26  153  153 |     ---     ---    ---    ---
        |    7     6     7   116    84   251   .26           |     ---     ---


Table 1.1991.b     GPS week : 1991   MJD: 58181.0-58187.0   

         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
------+------------------------------------+------------------------------------------
 R01  |   12   12   12   11   12   13   12 |
 R02  |    8    8    8    8    7    9    6 |
 R03  |   12    9    8    8    9   10    7 |
 R04  |    9    9   11    7   10    8    8 |
 R05  |   11   11   12   13   11   14   12 |
 R06  |   11    7    8    9   10    9   10 |
 R07  |   11    8    8    9    9    9    8 |
 R08  |    9    7    9    8    7    9   14 |
 R09  |   10    6    8    7    6    6    8 |
 R10  |    8    6    7    7    8    9    7 |
 R11  |    9   10    8    7    8   10    9 |
 R13  |    9   10    7    7    8    8    7 |
 R14  |   10    8    8    9   10   12    9 |
 R15  |   20   17   16   13   17   20   16 |
 R16  |   16   15   14   15   13   15   14 |
 R17  |   12   11   11   10    9    9    8 |
 R18  |    8    6    6    9    7    9    8 |
 R19  |   11   11   15   15   16   13   13 |
 R20  |   16   14   17   14   11   16   16 |
 R21  |   10    9    7    8    9   12   12 |
 R22  |    8   11   10   11   10   11   12 |
 R23  |    8    7    8    8    9    8    7 |
 R24  |   14   19   19   18   18   18   20 |
 R26  |    0    0    0    0    0    0    0 |


Table 1.1991.c     GPS week : 1991   MJD: 58181.0-58187.0   

         Daily transformation of broadcast orbits (brd) to the combined IGL orbit.
         Mean and standard deviations of the transformation parameters for the
         whole gpsweek.

CEN WEEK DAY |   DX    DY    DZ     RX      RY      RZ   SCL   RMS   WRMS |    TOFT   TDRFT
             |  [mm]  [mm]  [mm]  [uas]   [uas]   [uas] [ppb]  [mm]  [mm] |    [ps]  [ps/d]
-------------+------------------------------------------------------------+----------------
brd 1991 0   |  -17   -76   157      46   -1089   -2869  82.3  1388  1388 |     258       0
brd 1991 1   |   -9   -34   170    1557   -1217    1688  84.6  1524  1524 |    -707       0
brd 1991 2   |   -7   -38   100     -21   -1445    6245  86.5  1521  1521 |     539       0
brd 1991 3   |  -63    91   -33     -25    1658     681  84.9  1547  1547 |     179       0
brd 1991 4   |   10    18    86     134    -423     577  84.5  1250  1250 |   -6804       0
brd 1991 5   |  -32    54   -50    -699    -814    1366  84.8  1270  1270 |   -7917       0
brd 1991 6   |    6   -15    29    1955   -1102    3261  84.7  1294  1294 |   -7485       0
-------------+------------------------------------------------------------+----------------
brd 1991 mean|  -16     0    65     420    -633    1564  84.6  1399  1399 |   -3133       0
brd 1991 sdev|   25    58    87     958    1060    2776   1.2   130   130 |    4023       0



Table 2: Daily transformation of each centre to the combined IGL 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 2.1991.0  GPS week: 1991   Day: 0   MJD: 58181                            

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  n/a|   -1    -1    -7    17   -24    52   .09   30   28 |   -4374    -196   3337   9744
cof  n/a|    2     0    -3    41     4    28   .13   35   29 |   -4369    -206   3348   9746
emx  n/a|    0     0     3   -25   -16   -38   .13   23   23 |    -203    1163   3306   9504
esx  n/a|    0     0    -2    -4    38    11   .13   19   19 |   -1364   -2379   3335  11830
gfz  n/a|   -2     0    -3     8    48    10   .09   24   20 |       0    -761   3332   9790
grg  n/a|    1    -2     9   -23   -79  -126  -.30   30   25 |     450    -209   3342   9085
iac  n/a|    0     2    -6    11    26    35  -.17   27   27 |    1940     212   3342   9169
mcc  n/a|   -2     5    -3   148   115   632  -.66   65   65 |     ---     ---    ---    ---

Table 2.1991.1  GPS week: 1991   Day: 1   MJD: 58182                            

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  n/a|    0    -2    -2   -44   -18    43   .05   30   31 |   -4020   -3162   3775   9496
cof  n/a|   -1     0    -6   -31    10    -3   .07   32   33 |   -4032   -3145   3775   9498
emx  n/a|    0     1     1   -26   -13   -20   .05   23   23 |   -3029   -1040   3779   9241
esx  n/a|    1     0    -2     9    31    15   .14   15   12 |   -9440   -4340   3779  11841
gfz  n/a|   -1     0     0    15    55    51   .09   26   23 |       0   -2277   3752   9539
grg  n/a|   -1    -1    17    13   -58   -76  -.33   34   36 |     846   -3013   3752   8918
iac  n/a|    0     0    -6    29   -22    -4  -.15   20   20 |    1929   -1364   3775   8904
mcc  n/a|    0    -9    -7    47   -50   737  -.42  182  182 |     ---     ---    ---    ---

Table 2.1991.2  GPS week: 1991   Day: 2   MJD: 58183                            

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  n/a|    0     0     0   -37   -33    65   .10   28   29 |   -6921     371   3019   9735
cof  n/a|    1     0     0   -22    -4    35   .12   30   30 |   -6917     356   3021   9740
emx  n/a|    0     0     1    12    14   -12   .02   22   22 |    3148    1497   3007   9277
esx  n/a|    0     0     1    14    49    20   .18   19   17 |   -7061     962   3021  11963
gfz  n/a|    0    -1     0     6    60   -16   .07   24   22 |       0     707   2981   9820
grg  n/a|   -1     0     6    -5   -27    45  -.42   33   37 |     279     589   3007   8778
iac  n/a|    0     0    -5    -2   -65  -116  -.10   21   21 |    1296    1087   3016   9285
mcc  n/a|    3     2     6  -124   -60   233  -.09  257  257 |     ---     ---    ---    ---

Table 2.1991.3  GPS week: 1991   Day: 3   MJD: 58184                            

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  n/a|    0    -1     1   -12   -26    16   .08   30   32 |   -5970     118   3187   9686
cof  n/a|    0     0    -1   -23   -15    11   .19   33   35 |   -5987     156   3188   9686
emx  n/a|   -1     1     6   -42    -1   -11   .09   23   23 |   10806    1311   3164   9311
esx  n/a|    0     0    -1    37    24    41   .15   17   15 |   12897     298   3166  11950
gfz  n/a|    1     0     1    49    57   -10   .04   21   19 |       0    -772   3167   9734
grg  n/a|    0     0     1   -35   -52   -20  -.33   29   28 |    -170     516   3169   9179
iac  n/a|    0     0    -5    12     0   -83  -.07   22   21 |    2545     164   3170   9252
mcc  n/a|   11    -4    -1   -15   102   545  -.34  150  150 |     ---     ---    ---    ---

Table 2.1991.4  GPS week: 1991   Day: 4   MJD: 58185                            

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  n/a|    1     0     0   -44   -30    59   .09   27   30 |  -13539    1234   3445   9620
cof  n/a|    2    -1    -1   -13     0    18   .12   30   32 |  -13561    1271   3444   9619
emx  n/a|    0     1     3   -51   -24   -22   .07   24   24 |   -2196    1517   3435   9345
esx  n/a|    0     0     0    43    35    -5   .13   18   14 |   10636     149   3433  11398
gfz  n/a|   -2    -2    -2     6    64   -11   .09   24   24 |       0    1518   3434   9404
grg  n/a|    0     0     4   -43   -40   -30  -.39   30   24 |   -5817   -1898   3450   9112
iac  n/a|    0     0    -5    10   -32    26  -.08   21   21 |   -4637    -276   3433   9126
mcc  n/a|    0     8    14   215  -103   815  -.34  129  129 |     ---     ---    ---    ---

Table 2.1991.5  GPS week: 1991   Day: 5   MJD: 58186                            

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  n/a|    0     0     2   -34   -41    41   .06   28   31 |  -13308     807   3493   9362
cof  n/a|   -2     0     2   -19    30    67   .16   30   33 |  -13277     750   3492   9365
emx  n/a|    1     0     4   -41    11   -75   .07   28   28 |    3277     766   3486   8899
esx  n/a|   -1     1    -2    19    38    42   .19   17   16 |  -16076    1351   3489  11880
gfz  n/a|    0    -2    -1    60    -4    18   .00   25   23 |       0     173   3459   9043
grg  n/a|   -3    -1     7    -1    -6    38  -.49 2793   72 |   -8176     504   3945   7693
iac  n/a|    0     2    -3   -43   -22   -74  -.09   22   23 |   -6284     604   3504   8712
mcc  n/a|    3     1     0   142    56   873  -.01  135  135 |     ---     ---    ---    ---

Table 2.1991.6  GPS week: 1991   Day: 6   MJD: 58187                            

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  n/a|    1    -2     0   -44   -33    59   .09   27   31 |  144766    -422  59668 858218
cof  n/a|    0    -3     0   -20   -31    41   .17   30   33 |  144773    -438  59668 858220
emx  n/a|    1     0     4   -22   -17   -53  -.01   27   27 |  145552     964  59693 858573
esx  n/a|    0     1    -3    25    -4   -15   .16   19   16 |  -12273   -2096   3140  11323
gfz  n/a|   -1    -1    -7    28     0    10   .14   23   19 |       0   -1609   3127   9081
grg  n/a|    0    -1     9   -35   -59   -41  -.36   32   34 |   -6743   -1745   3147   8729
iac  n/a|    0     1    -2    36    66   -23  -.11   20   20 |  151100     411  59702 858692
mcc  n/a|  -11    -2    -7    13     3   995   .05  155  155 |     ---     ---    ---    ---

       
       
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 IGL column gives resulting satellite accuracy measures found in
         SP3 header. The last IGL column gives the RMS fit of the IGL 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 IGL 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 3.1991.0  GPS week: 1991   Day: 0   MJD: 58181                            

        Weighted Average                                  Orbit Dynamics (7 days)
 PRN  |  brd  cod  cof  emx  esx  gfz  grg  iac  mcc  IGL |   cod  cof  emx  esx  gfz  grg  iac  mcc   IGL
------+---------------------------------------------------+-----------------------------------------------
 R01E |  973   42   45   17    9   26   36   25  ---   11 |    52   56   46   49   54   64   45  ---    47
 R02E | 2054   21   23   17    9   17   25   15   71    7 |    74   73   72   72   73   59   72  107    69
 R03E | 1017   30   32   23   13   25   34   39  ---   12 |   131  133  122  125  125  122  128  ---   124
 R04E | 2038   26   41   18   13   16   21   21  ---    8 |   119  121  130  125  127  135  110  ---   124
 R05E | 1284   33   40   21   22   24   23   29  ---   11 |    57   61   38   55   56   40   52  ---    47
 R06E | 2133   16   19   21   21   17   21   38  ---   10 |   139  146  151  147  146  148  146  ---   145
 R07E |  821   31   28   29   10   25   24   17  ---   10 |   146  148  145  147  140  144  143  ---   144
 R08E | 1422   27   33   19   12   24   11   24  ---    8 |   130  138  119  111  109 9999  126  ---   125
 R09  | 1565   26   15   22   25   21   11   11  ---    9 |    22   25   18   29   34   15   19  ---    17
 R10  |  758   18   13   16   15   24   16   18  ---    8 |    50   49   44   54   45   41   45  ---    46
 R11  |  972   21   22   22   16   21   14   29   74    9 |    57   55   49   46   35   46   38   42    43
 R13  | 1904    8   15   16   29   16   21   19  ---    9 |    48   50   47   61   47   32   40  ---    46
 R14  | 2034   33   34   18   14   29   20   16  ---    9 |    89   90   80   77   76   72   76  ---    77
 R15  | 2332   59   72   29   34   49   53   39  ---   19 |    79   83   47   36   45   57   28  ---    39
 R16  | 1124   28   30   50   17   16   58   17  ---   15 |    34   41   53   47   43   36   49  ---    41
 R17  |  609   30   23   27   17   33   27   31  ---   12 |    28   30   29   24   25   38   17  ---    22
 R18  |  664   11   10   10   16   14   23   28  ---    7 |    20   21   25   26   27   30   20  ---    21
 R19  |  737   38   41   20   16   22   18   37  ---   11 |    36   39   27   41   42   24   22  ---    29
 R20  | 1183   33   58   22   35   22   55   37  ---   15 |    36   54   26   33   24   21   18  ---    16
 R21  |  756   37   42   22   10   22   12   30   45   10 |    29   31   23   21   13   27   21   78    18
 R22  |  481   29   21   15    9   16   12   23  ---    8 |    30   32   28   21   21   24   19  ---    20
 R23  |  948   15   23   14   22   15   18   16  ---    7 |    20   26   22   30   24   24   26  ---    22
 R24  | 1463   37   47   28   24   24   52   23  ---   14 |    44   43   44   27   25   14   22  ---    24
XR26  | ----  ---  ---  ---  ---  ---  ---    5  ---    0 |   ---  ---  ---  ---  ---  ---   45  ---    44
------+---------------------------------------------------+-----------------------------------------------
 RMS  | 1387   30   35   23   19   24   30   27   65      |T   63   67   60   61   58   55   55   75    56
 WRMS | 1387   28   29   23   19   20   25   27   65      |NE  41   44   37   38   35   33   31   60    32
 MEDI | 1124   29   30   21   16   22   21   23   71      |MD  50   54   46   47   45   38   40   78    43

Table 3.1991.1  GPS week: 1991   Day: 1   MJD: 58182                            

        Weighted Average                                  Orbit Dynamics (7 days)
 PRN  |  brd  cod  cof  emx  esx  gfz  grg  iac  mcc  IGL |   cod  cof  emx  esx  gfz  grg  iac  mcc   IGL
------+---------------------------------------------------+-----------------------------------------------
 R01E |  504   42   49   33   12   31   28   25  ---   12 |    41   45   41   40   52   44   33  ---    33
 R02E | 2726   14   12   20   11   18   28   15   72    7 |    47   46   50   45   48   38   46   69    43
 R03E | 1089   25   24   22   11   24   21   19  343    8 |    77   79   72   80   82   76   74  137    75
 R04E | 1300   25   22   25   11   25   26   13  ---    9 |   160  159  169  157  151  162  160  ---   159
 R05E | 1584   24   30   25   21   25   34   19  ---   10 |    37   43   33   28   44   43   40  ---    30
 R06E | 1520   17   18   14   15   18   24   13  ---    7 |    85   85   91   90   92   89   94  ---    89
 R07E | 1213   26   30   20    9   26   17   15  ---    8 |    95   93   86   97   91   95   90  ---    91
 R08E | 2389   24   18   17    9   22   13   12  ---    7 |    93   92   78   75   71  982   93  ---    88
 R09  |  990   19   22   12    8   18   13   12  ---    6 |    14   19   13   16   25   15   19  ---    13
 R10  |  676   10   17   10    7   18   19    9  ---    5 |    26   33   24   26   24   22   28  ---    23
 R11  |  809   21   28   18    9   38   32   18   67   10 |    31   36   29   23   27   38   19   25    22
 R13  | 1910   13   15   12   27   15   30   24  ---   10 |    27   33   26   42   27   20   18  ---    26
 R14  | 1888   26   27   13   12   22   12   25  ---    8 |    74   77   75   77   78   67   68  ---    72
 R15  | 2177   65   65   32   17   44   37   34  ---   16 |    42   45   24   21   24   38   19  ---    19
 R16  | 2424   30   30   39   19   24   59   24  ---   14 |    19   23   38   32   37   32   37  ---    28
 R17  |  703   32   35   29    9   34   13   24  ---   10 |    15   18   19   21   23   15   13  ---    13
 R18  |  674   15   15   13    8   22   10   15  ---    6 |    16   17   15   18   23   13   16  ---    13
 R19  | 1158   52   52   20   15   21   14   22  ---   11 |    24   24   22   25   27   15   25  ---    20
 R20  | 1509   19   33   17   22   27   70   26  ---   14 |    25   37   23   26   33   26   18  ---    21
 R21  |  678   31   32   17    8   29   12   22   71    8 |    19   22   16   17   17   16   16   36    14
 R22  |  679   32   35   15    7   40   37   17  ---   10 |    19   22   22   16   27   32   16  ---    14
 R23  | 2138   14   13   15   18    8   21   16  ---    7 |    17   20   18   26   17   17   15  ---    15
 R24  |  915   42   48   44   28   29   88   26  ---   19 |    31   35   46   34   35   15   27  ---    28
XR26  | ----  ---  ---  ---  ---  ---  ---    4  ---    0 |   ---  ---  ---  ---  ---  ---   49  ---    49
------+---------------------------------------------------+-----------------------------------------------
 RMS  | 1523   30   32   23   15   26   34   20  182      |T   44   47   44   44   46   83   43   66    41
 WRMS | 1523   31   33   23   12   23   36   20  182      |NE  26   30   27   28   29   25   25   30    24
 MEDI | 1213   25   28   18   11   24   24   18   71      |MD  31   36   29   28   33   32   27   36    26

Table 3.1991.2  GPS week: 1991   Day: 2   MJD: 58183                            

        Weighted Average                                  Orbit Dynamics (7 days)
 PRN  |  brd  cod  cof  emx  esx  gfz  grg  iac  mcc  IGL |   cod  cof  emx  esx  gfz  grg  iac  mcc   IGL
------+---------------------------------------------------+-----------------------------------------------
 R01E |  525   32   30   28   16   29   30   22  ---   11 |    45   47   36   43   52   49   41  ---    40
 R02E | 1500   15   18   20   14   19   24   17  118    8 |    52   52   47   52   56   64   50  126    50
 R03E | 1404   19   21   13   12   17   29   16  484    7 |    47   47   45   47   49   49   46  226    45
 R04E |  730   20   26   14   15   21   24   38  ---   10 |   104  111  101  110  112  108   74  ---   100
 R05E | 1190   27   12   20   22   33   34   22  ---   11 |    32   29   29   41   45   41   31  ---    28
 R06E | 2955   12   18   19   17   10   28   13  ---    7 |    59   60   61   63   60   71   62  ---    60
 R07E | 1776   23   24   21   11   18   20   14  ---    8 |    56   57   49   55   52   55   46  ---    51
 R08E | 2535   20   23   18   15   24   19   21  ---    8 |    55   56   51   44   44  785   49  ---    53
 R09  |  930   29   31   11   16   20   18   11  ---    8 |    22   28   16   20   29   22   21  ---    15
 R10  | 1202   20   17   11   17   14   18   14  ---    7 |    36   35   26   40   31   36   30  ---    31
 R11  | 1195   26   24   15    5   25   15   13   76    7 |    43   44   35   32   35   38   32   22    33
 R13  | 1554    8   13   12   18   13   30   12  ---    7 |    34   37   32   39   34   27   36  ---    32
 R14  | 1786   30   31    6   15   22   16   16  ---    8 |    47   48   41   46   43   47   39  ---    42
 R15  | 1834   56   55   24   28   30   31   39  ---   15 |    55   53   38   30   30   40   22  ---    31
 R16  | 2537   20   33   36   26   19   53   21  ---   13 |    41   46   46   45   30   25   34  ---    33
 R17  |  864   31   32   23    9   36   20   23  ---   10 |    18   21   19   19   20   16   11  ---    13
 R18  |  617   17   19    8    9   18   12   14  ---    6 |    17   24   20   18   18   17   22  ---    15
 R19  | 1391   54   65   26   29   30   27   25  ---   14 |    28   43   25   23   35   29   31  ---    20
 R20  |  825   21   31   35   34   28   79   19  ---   17 |    31   44   35   30   38   19   18  ---    17
 R21  |  854   21   20    9    9   17   12   16  107    6 |    17   16   16   22   28   17   22   52    17
 R22  |  942   33   29   13   13   29   12   25  ---    9 |    22   21   23   27   15   18   15  ---    16
 R23  | 1819    9   12   20   17   15   26   19  ---    8 |    23   26   26   31   28   30   21  ---    22
 R24  |  806   33   42   52   30   34   72   25  ---   18 |    32   51   58   37   32   28   28  ---    32
XR26  | ----  ---  ---  ---  ---  ---  ---    8  ---    0 |   ---  ---  ---  ---  ---  ---   25  ---    25
------+---------------------------------------------------+-----------------------------------------------
 RMS  | 1521   28   30   22   19   24   33   21  257      |T   39   43   38   39   39   70   33  106    34
 WRMS | 1521   29   30   22   17   22   37   21  257      |NE  31   35   30   30   29   27   25   37    24
 MEDI | 1202   21   24   19   16   21   24   17  107      |MD  36   44   35   39   35   36   31   52    31

Table 3.1991.3  GPS week: 1991   Day: 3   MJD: 58184                            

        Weighted Average                                  Orbit Dynamics (7 days)
 PRN  |  brd  cod  cof  emx  esx  gfz  grg  iac  mcc  IGL |   cod  cof  emx  esx  gfz  grg  iac  mcc   IGL
------+---------------------------------------------------+-----------------------------------------------
 R01E |  957   34   28   28   14   24   30   18  ---   11 |    34   37   39   40   40   49   33  ---    34
 R02E |  996   18   13   21   10   18   27   16  191    8 |    43   43   41   39   43   52   33  101    38
 R03E | 1954   23   21   19   14   24   18   11  170    8 |    35   35   29   37   39   44   31  170    32
 R04E |  639   22   20   13   10   20   17   16  ---    7 |   161  157  163  161  160  164  155  ---   160
 R05E | 1257   26   27   21   17   27   32   43  ---   12 |    36   40   28   39   44   38   32  ---    28
 R06E | 3918   17   12   16   22   18   18   18  ---    8 |    34   39   32   42   35   39   29  ---    32
 R07E | 1679   20   23   24   12   21   25   17  202    8 |    50   47   38   44   41   50   41  128    41
 R08E | 2429   20   16   20    9   16   23   23  ---    8 |    44   43   35   39   42 9999   50  ---    43
 R09  | 1510   26   31   11   12   18   13   17  ---    7 |    22   26   15   20   23   21   19  ---    15
 R10  | 1691   10   14   20   15   16   14   19  ---    7 |    37   46   29   44   37   43   32  ---    35
 R11  | 1185   18   19   14   14   14   11   24   58    7 |    39   38   28   41   32   43   33   49    34
 R13  | 1017   10   15   15   13   15   20   14  ---    6 |    37   39   32   42   38   32   43  ---    36
 R14  | 1292   32   33   20   18   14   20   17  ---    9 |    43   47   32   43   32   33   32  ---    33
 R15  | 1398   56   55   28   20   24   19   29  ---   13 |    67   66   45   40   35   47   32  ---    38
 R16  |  878   19   37   37   34   18   51   19  ---   14 |    29   56   46   59   41   34   33  ---    38
 R17  | 2223   37   38   27   13   25   11   21  ---   10 |    30   31   25   26   28   27   19  ---    22
 R18  | 1189   27   33   13   19   26   17   16  ---    9 |    25   33   20   26   32   24   21  ---    21
 R19  | 1028   59   60   31   12   31   13   38  ---   14 |    34   36   30   20   23   26   23  ---    21
 R20  |  841   16   41   38   16   12   64   22  ---   14 |    37   63   45   40   35   37   22  ---    31
 R21  |  851   26   27   15   10   19   19   15   56    7 |    27   29   20   32   30   19   28   70    24
 R22  |  619   32   38   20    9   26   26   28  ---   10 |    27   29   22   22   20   34   23  ---    21
 R23  |  891   11   16   19   22   11   19   15  ---    8 |    23   25   23   29   28   17   18  ---    21
 R24  | 1109   57   59   34   23   34   65   25  ---   17 |    47   52   31   43   50   25   23  ---    30
XR26  | ----  ---  ---  ---  ---  ---  ---    5  ---    0 |   ---  ---  ---  ---  ---  ---   37  ---    38
------+---------------------------------------------------+-----------------------------------------------
 RMS  | 1546   30   33   23   17   21   29   22  150      |T   41   45   36   42   40   40   35  103    36
 WRMS | 1546   32   35   23   15   19   28   21  150      |NE  34   41   29   35   32   30   27   59    28
 MEDI | 1185   23   27   20   14   19   19   18  170      |MD  36   39   31   40   35   34   32  101    32

Table 3.1991.4  GPS week: 1991   Day: 4   MJD: 58185                            

        Weighted Average                                  Orbit Dynamics (7 days)
 PRN  |  brd  cod  cof  emx  esx  gfz  grg  iac  mcc  IGL |   cod  cof  emx  esx  gfz  grg  iac  mcc   IGL
------+---------------------------------------------------+-----------------------------------------------
 R01E | 1347   31   27   28   13   35   34   24  ---   12 |    54   55   47   70   57   67   71  ---    60
 R02E |  710   13   24   20   13   16   17   11  183    6 |    46   54   48   50   51   51   48   63    48
 R03E | 1204   21   19   24   12   25   20   11  152    8 |    58   58   56   54   52   49   49   92    51
 R04E | 1254   15   16   37   11   22   16   24  ---   10 |    77   78   96   71   73   83   59  ---    73
 R05E | 1404   25   27   23   18   33   29   24  ---   11 |    35   42   27   35   45   35   30  ---    27
 R06E | 1276   12   16   18   30   13   29   19  ---   10 |    66   76   73   67   69   86   69  ---    69
 R07E | 1354   28   24   19   10   24   25   14  112    8 |    65   66   62   61   61   72   57   35    60
 R08E | 2063   14   15   17   10   19   26    9  ---    7 |    67   70   61   76   72 9999   58  ---    63
 R09  |  828   15   15   10   11   13   22   11  ---    6 |    12   14   10   23   22   21   15  ---    12
 R10  |  880   11   12   14   27   12   11   19  ---    8 |    33   32   30   54   34   33   35  ---    36
 R11  |  738   19   19   10    6   25   24   17   94    7 |    36   38   34   27   33   50   24   24    30
 R13  |  907   18   16   16   13   23   26   11  ---    8 |    34   32   27   30   23   37   23  ---    26
 R14  | 2314   25   22   22   10   28   23   24  ---    9 |    61   61   55   59   55   48   48  ---    53
 R15  | 1028   61   66   38   29   40   33   28  ---   17 |    54   56   42   27   24   46   21  ---    27
 R16  |  646   17   16   46   22   14   38   20  ---   12 |    32   40   52   44   48   48   29  ---    39
 R17  |  972   34   38   23   10   22   13   18  ---    9 |    22   28   20   27   28   22   12  ---    19
 R18  | 1016   19   23   13   11   12   18   16  ---    6 |    23   25   20   21   19   23   15  ---    18
 R19  | 1784   51   52   27   16   27   35   48  ---   15 |    24   25   21   33   27   38   26  ---    20
 R20  |  985   22   25   26   16   28   34   17  ---   10 |    27   34   23   37   38   41   15  ---    21
 R21  |  849   28   31   19    7   25   16   21   75    8 |    24   31   21   23   28   31   27   35    23
 R22  |  624   34   34   20   12   25   23   18  ---    9 |    26   30   24   21   20   27   14  ---    18
 R23  |  830   19   13   16   27   11   18   21  ---    9 |    21   25   20   39   33   30   16  ---    22
 R24  | 1809   32   58   26   32   31   85   24  ---   18 |    36   56   33   37   22   29   16  ---    20
XR26  | ----  ---  ---  ---  ---  ---  ---    4  ---    0 |   ---  ---  ---  ---  ---  ---   32  ---    33
------+---------------------------------------------------+-----------------------------------------------
 RMS  | 1249   27   30   24   18   24   30   21  129      |T   40   44   39   42   40   43   33   49    36
 WRMS | 1249   30   32   24   14   24   24   21  129      |NE  31   35   28   33   30   34   23   29    26
 MEDI | 1016   21   23   20   13   24   24   18  112      |MD  35   40   33   37   34   38   27   35    27

Table 3.1991.5  GPS week: 1991   Day: 5   MJD: 58186                            

        Weighted Average                                  Orbit Dynamics (7 days)
 PRN  |  brd  cod  cof  emx  esx  gfz  grg  iac  mcc  IGL |   cod  cof  emx  esx  gfz  grg  iac  mcc   IGL
------+---------------------------------------------------+-----------------------------------------------
 R01E | 2613   30   29   29   17   34   50   24  ---   13 |    44   41   34   42   44   48   39  ---    35
 R02E |  904   17   12   18   12   16   43   13  143    8 |    61   60   59   59   60   82   57   56    60
 R03E |  573   20   27   28   12   24   28   19  106    9 |    87   89   78   80   83   84   86   64    81
 R04E | 1189   17   21   25    9   18   21   15  ---    7 |   141  143  145  149  147  151  140  ---   145
 R05E | 1333   17   15   47   17   33   41   26  ---   13 |    39   40   53   43   51   34   40  ---    36
 R06E | 1226   15   17   16   23   12   28   16  ---    8 |    86   89   94  104   96   95   91  ---    94
 R07E | 1028   21   21   22   19   17   30   11  146    9 |    92   91   86   94   91   83   88   38    89
 R08E | 1292   21   23   23   12   20 >>>>   11  ---    8 |    85   87   83  105  102 9999   81  ---    82
 R09  |  853   13   15   12    9   14   16   10  ---    5 |     9   12   14   17   26   15   16  ---    13
 R10  |  783   13   17   21   24   11   21   14  ---    8 |    25   26   23   46   38   26   31  ---    31
 R11  |  529   24   26   18   17   21   28   22  156    9 |    29   31   36   41   41   39   37   29    34
 R13  | 1444   16   15   17   15   20   21   16  ---    7 |    31   28   34   29   30   27   25  ---    27
 R14  | 1540   36   31   27   12   27   37   24  ---   12 |    45   42   41   30   36   54   33  ---    35
 R15  | 1880   66   64   47   24   48   38   42  ---   19 |    43   41   35   30   37   30   20  ---    24
 R16  |  723   14   22   33   26   25   61   36  ---   14 |    27   30   32   42   41   19   34  ---    31
 R17  | 1189   22   23   17   13   32   17   21  ---    9 |    20   18   20   28   23   19   25  ---    20
 R18  |  755   22   24   18   14   19   27   18  ---    8 |    14   18   15   17   23   34   14  ---    15
 R19  | 2026   50   50   24   12   26   19   32  ---   13 |    17   21   17   24   30   31   17  ---    19
 R20  | 1067   31   35   50   17   28   63   32  ---   16 |    24   30   36   23   29   16   18  ---    16
 R21  |  772   38   40   29   12   34   20   23  117   11 |    18   18   21   22   21   18   16   44    14
 R22  |  668   37   38   23   16   30   15   21  ---   11 |    22   22   23   20   28   13   21  ---    16
 R23  |  800   14   20   13   20   12   30   12  ---    7 |    19   20   18   19   21   27   17  ---    15
 R24  | 1615   23   37   35   17   32   98   19  ---   17 |    23   23   38   39   38   16   23  ---    28
XR26  | ----  ---  ---  ---  ---  ---  ---    6  ---    0 |   ---  ---  ---  ---  ---  ---   33  ---    34
------+---------------------------------------------------+-----------------------------------------------
 RMS  | 1269   28   30   28   17   25 2792   22  135      |T   43   44   45   47   49   43   41   46    41
 WRMS | 1269   31   33   28   16   23   72   23  135      |NE  24   25   26   28   30   25   23   36    23
 MEDI | 1067   21   23   23   16   24   28   19  143      |MD  29   30   35   39   38   30   31   44    31

Table 3.1991.6  GPS week: 1991   Day: 6   MJD: 58187                            

        Weighted Average                                  Orbit Dynamics (7 days)
 PRN  |  brd  cod  cof  emx  esx  gfz  grg  iac  mcc  IGL |   cod  cof  emx  esx  gfz  grg  iac  mcc   IGL
------+---------------------------------------------------+-----------------------------------------------
 R01E | 1154   26   33   19   23   30   19   33  ---   11 |    79   77   79   86   89   79   73  ---    78
 R02E | 1465   10   15   14   10   16   17    8  121    5 |    61   63   67   67   63   70   62   87    64
 R03E |  572   20   18   21    9   16   14    9   98    6 |   120  125  117  126  121  123  122   65   121
 R04E |  662   15   11   23    9   21   23   11  ---    7 |   137  139  141  138  135  133  136  ---   136
 R05E | 1241   25   28   35   18   38   29   20  ---   12 |    53   53   50   63   77   54   55  ---    53
 R06E | 1494   13   16   39   25   18   22   10  ---   10 |   131  134  133  141  135  128  132  ---   133
 R07E |  988   18   12   21   10   20   13   16  183    7 |   128  128  125  131  129  127  123   49   126
XR08E |  998   17   26   25  ---  ---  ---   15  ---   13 |   114  118  121  ---  ---  ---  107  ---   110
 R09  |  790   17   16   16   12   11   32   18  ---    8 |    14   17   12   23   27   22   17  ---    14
 R10  |  810   12   13   12   17   13   25   14  ---    7 |    41   42   37   49   40   32   38  ---    39
 R11  |  592   14   16   13   23   10   31   16  198    8 |    46   45   43   54   43   42   35   44    41
 R13  | 2988   12   16   10   16   21   17   13  ---    7 |    49   53   48   56   48   50   42  ---    47
 R14  |  992   33   36   15    7   26   15   19  ---    9 |    73   72   61   60   60   68   51  ---    59
 R15  | 1482   57   53   34   27   22   23   38  ---   15 |    77   75   52   35   40   58   26  ---    40
 R16  |  818   16   26   41   17   24   58   23  ---   14 |    39   52   55   55   42   33   47  ---    44
 R17  |  916   22   21   15   10   21   19   17  ---    8 |    36   38   35   32   32   33   26  ---    29
 R18  | 1789   23   22   20   17   23   14   14  ---    8 |    25   24   23   27   27   27   21  ---    23
 R19  | 1397   50   52   26   20   30   25   21  ---   13 |    40   41   26   34   31   30   19  ---    26
 R20  |  651   40   50   50   25   33   48   20  ---   16 |    45   51   43   31   24   28   28  ---    24
 R21  | 1338   31   35   26   18   32   23   27  150   11 |    33   33   28   33   26   27   20   71    23
 R22  |  934   39   39   26   10   26   22   34  ---   12 |    38   36   23   21   16   32   25  ---    21
 R23  |  667   14   18   15   19   19   15   14  ---    7 |    24   26   28   34   31   29   20  ---    25
 R24  | 1974   27   37   48   37   21   93   16  ---   19 |    54   68   42   34   36   14   23  ---    27
XR26  | ----  ---  ---  ---  ---  ---  ---    5  ---    0 |   ---  ---  ---  ---  ---  ---   46  ---    44
------+---------------------------------------------------+-----------------------------------------------
 RMS  | 1294   27   30   27   19   23   32   20  155      |T   63   65   60   60   57   56   53   63    56
 WRMS | 1294   31   33   27   16   19   34   20  155      |NE  42   44   37   38   34   35   30   57    32
 MEDI |  992   20   22   21   17   21   22   16  150      |MD  49   53   48   49   40   33   38   65    41



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