[teqc] dumb clock questions

Lou Estey lou at unavco.org
Mon Aug 29 09:15:33 MDT 2005


Andrew,

> Attached are several summary files with issues that seem to fall under
> the general category of clock steering or lack of it.
> 
> The source rinex/dat files for BDZG and BOND (actually the same site; see
> ftp://ftp.panga.cwu.edu/private/bdzg_issue) do not show many (or any) of
> the millisecond clock resets typical of Trimble receivers, and teqc
> reports clock drift of 0.  But there are plenty of "C"s in the satellite
> summary chart, which I presume occur where the millisecond resets would
> normally be.  The "grmd" file (see ftp://ftp.panga.cwu.edu/pub/data/recent
> for rinex) looks similar but in this case I think the rinex was written by
> Leica's Spider software.
> 
> Assuming this is due to "clock steering", does this indicate clock
> steering is "on" or "off"  in Trimble's world?  I.e., is tracking the
> millisecond resets "clock steering" as clockprep.txt suggests, or is
> adjusting the timestamps to conform with GPS time (resulting in
> range/phase steps) "clock steering"?  Or none of the above?

Generally when you see this on a receiver that normally has millisecond
resets (e.g. Trimble, Ashtech), it means that the receiver's clock is
bad or there is a related hardware problem.

This is not due to clock steering being on or off.  If clock steering
were on, you would get no "C" and few "m" indicators and the clock drift
would be zero.  If clock steering were off (which is was the only available
option until recent years), then you'd still get no "C" and few "m" indicators
and the clock drift with be some number of ms resets per hour (typically 1-10).

So, seeing a lot of "C" or "m" indicators is bad news.

--lou

>  SV+------------------------------------------------------------------------+ SV
>   1|                                 _______                           __CCC|  1
>   2|_____                      __LCCCCCCCCCCCCCCCCCCCCCC__                  |  2
>   3|_CCCCCCCCCCCCCL__                                      ____-CCCCCCCCCCCC|  3
>   4|___                    __LCCCCCCCCCCCCCCCCCC___                         |  4
>   5|                          __CCCCCCCCCCCCCCCCCCCCC+__                    |  5
>   6|_                                   ___CCCCCCCCCCCCCCCCCCCCmCC___       |  6
>   7|             __LCCCCCCCCmCCCCCCCCCCCCCC___                              |  7
>   8|__CCCCCCCCCCCCCCCCCCCCCCmCC__                            ______         |  8
>   9|                    ___--CCCCCCCCCCCCCCC___                  ___CCCCCCCC|  9
>  10| ____--CCCCCCCC___                   __CCCCCCCCCCCCCCCCCC___            | 10
>  11|            ___LCCCCCCCCmCCL__                                      ____| 11
>  13|CCCCCCCCCCCCCCC__                        __________                     | 13
>  14|                            __________                        __CCCCCCCC| 14
>  15|         ______                                  __CCCCCCCCmCCCCCCCCCCCC| 15
>  16|CCCCCCC+__                                      ____-CCCCCCmCC+__       | 16
>  18|                _______                          __CCCCCCCCmCCCCCCCCCCCC| 18
>  19| ___CCCCCCCCCCCCCCC+__                                      ___-CCCCCCCC| 19
>  20|CC+__                      ____________                                 | 20
>  21|                                           __CCCCCCCCCCCCCCmCCCCCCCCCC__| 21
>  22|                     ___                              __LCCmCCCCCCCCCCCC| 22
>  23|CCCCCCCCCC___                           ______                          | 23
>  24|_                  __CCCmCCCCCCCCCCCCC__                                | 24
>  26|           ___-CCCCCCCCCmCCC___                  __CCCCCCCCmCCCCCC___   | 26
>  27|CCCCCCCCCCCCCCCCCCCCCC__                               ___              | 27
>  28|     __LCCCCCCCCCCCCCCCCmCCCCCCC___                                 ____| 28
>  29|        ____-CCCCCCCCCCCmCC___                 ___LCCCCCCCCmCCCC___     | 29
>  30|                               ____CCCCCCCCCCCCCCCCCC+__                | 30
> -dn|                                                                        |-dn
> +dn|     11     1 11       11                                  1   11       |+dn
> +20|555668878777866678777678886556666667765466655566654568887889977777888788|+20
> Pos|oooooooooo  oooooooo o  ooo                          o     ooo  oo   o  |Pos
> Clk|                    -                                                   |Clk
>    +|-----------|-----------|-----------|-----------|-----------|-----------+
> 20:56:00.000                                                        14:50:15.000
> 2005 Aug 11                                                          2005 Aug 12
> 
> *********************
> QC of RINEX  file(s) : BDZG2230.05o
> input RnxNAV file(s) : BDZG2230.05n
> *********************
> 
> Time of start of window : 2005 Aug 11  20:56:00.000
> Time of  end  of window : 2005 Aug 12  14:50:15.000
> Time line window length : 17.90 hour(s), ticked every 3.0 hour(s)
>   antenna WGS 84 (xyz)  : -1926781.8487 -3725151.3820 4790051.8504 (m)
>   antenna WGS 84 (geo)  : N  48 deg 59' 12.15"  W 117 deg 20' 58.65"
>   antenna WGS 84 (geo)  :   48.986709 deg   242.650374 deg
>           WGS 84 height : 613.4981 m
> |qc - header| position  : 25 m
> Observation interval    : 15.0000 seconds
> Total satellites w/ obs : 27
> NAVSTAR GPS SVs w/o OBS : 12  17  25  31  32 
> NAVSTAR GPS SVs w/o NAV :
> Rx tracking capability  : 12 SVs
> Poss. # of obs epochs   :   4298
> Epochs w/ observations  :   4298
> Possible obs >   0.0 deg:  43325
> Possible obs >  20.0 deg:  27117
> Complete obs >  20.0 deg:  26783
>  Deleted obs >  20.0 deg:     52
> Moving average MP1      : 0.356626 m
> Moving average MP2      : 0.475079 m
> Points in MP moving avg : 50
> No. of Rx clock offsets : 2
> Total Rx clock drift    :  0.000000 ms
> Rate of Rx clock drift  :  0.000 ms/hr
> Avg time between resets : 537.125 minute(s)
> Report gap > than       : 10.00 minute(s)
> epochs w/ msec clk slip : 79
> other msec mp events    : 27 (: 1160)   {expect <= 1:50}
> IOD signifying a slip   : >400.0 cm/minute
> IOD slips <  20.0 deg*  :      0
> IOD slips >  20.0 deg   :      0
> IOD or MP slips <  20.0*:     66
> IOD or MP slips >  20.0 :    514
>  * or unknown elevation
>       first epoch    last epoch    hrs   dt  #expt  #have   %   mp1   mp2 o/slps
> SUM 05  8 11 20:56 05  8 12 14:50 17.90  15  27117  26783  99  0.36  0.48     52
> 
> 
> 
> Processing parameters are:
> Receiver tracking capability       : 12 SVs
> Maximum ionospheric rate (L1)      : 400.00 cm/min
> Report data gap greater than       : 10.00 min
> Expected rms level of P1 multipath : 50.00 cm
> Expected rms level of P2 multipath : 65.00 cm
> Multipath slip sigma threshold     : 4.00 cm
> % increase in MP rms for C/A | A/S : 100.00 %
> Points in MP moving averages       : 50
> Minimum signal to noise for L1     : 0
> Minimum signal to noise for L2     : 0
> Elevation mask (cutoff)            : 20.00 degrees
> Elevation comparison threshold     : 25.00 degrees
> Orbit path spline fit sample time  : 10 min
> SVs w/ code data for position try  : 5
> Width of ASCII summary plot        : 72
> Data indicators on summary plot    : yes
> Do ionospheric observable          : yes
> Do ionospheric derivative          : yes
> Do high-pass ionosphere observable : no
> Do multipath observables           : yes
> Do 1-ms receiver clock slips       : yes
> Tolerance for 1-ms clock slips     : 1.00e-02 ms
> Do receiver LLI slips              : yes
> Do plot file(s)                    : no
> 
> Observations start   : 2005 Aug 11 20:56:00.000
> Observations  end    : 2005 Aug 12 14:50:15.000
> Observation interval : 15.0000 second(s)
> 
>  SV  #+hor <ele> #+mask <ele> #reprt #compl    L1     L2     P1     P2     CA
> --- ------ ----- ------ ----- ------ ------ ------ ------ ------ ------ ------
> G 1    654  8.37    105 25.87    105    105    105    105      0    105    105
> G 2   1788 35.35   1130 51.15   1130   1130   1130   1130      0   1130   1130
> G 3   1969 25.82   1379 32.09   1355   1347   1355   1347      0   1347   1355
> G 4   1559 31.54    992 44.68    992    992    992    992      0    992    992
> G 5   1521 38.57   1104 49.45   1104   1104   1104   1104      0   1104   1104
> G 6   1671 41.13   1221 52.89   1221   1221   1221   1221      0   1221   1221
> G 7   1660 42.19   1242 53.07   1242   1242   1242   1242      0   1242   1242
> G 8   1979 36.48   1263 53.49   1263   1263   1263   1263      0   1263   1263
> G 9   1915 26.84   1229 36.24   1211   1203   1209   1203      0   1203   1211
> G10   2286 25.57   1351 36.21   1292   1286   1292   1286      0   1286   1292
> G11   1222 15.97    477 25.17    477    477    477    477      0    477    477
> G13   1503 35.17    804 60.23    804    804    804    804      0    804    804
> G14   1101 19.69    393 43.65    393    393    393    393      0    393    393
> G15   1643 40.63   1133 56.55   1133   1133   1133   1133      0   1133   1133
> G16   1580 21.26    854 30.64    803    796    803    796      0    796    803
> G18   1704 39.93   1154 56.58   1154   1154   1154   1154      0   1154   1154
> G19   1892 25.20   1230 33.37   1188   1180   1185   1180      0   1180   1188
> G20    953 10.10     83 24.65     83     83     83     83      0     83     83
> G21   1730 43.10   1318 53.48   1318   1318   1318   1318      0   1318   1318
> G22   1206 43.85    854 59.56    854    854    854    854      0    854    854
> G23   1013 28.54    527 50.36    527    527    527    527      0    527    527
> G24   1272 26.88    821 36.46    821    821    821    821      0    821    821
> G26   2292 24.77   1437 33.59   1393   1390   1393   1390      0   1390   1393
> G27   1549 46.17   1229 56.63   1229   1229   1229   1229      0   1229   1229
> G28   1911 39.42   1325 53.69   1325   1325   1325   1325      0   1325   1325
> G29   2340 24.71   1464 33.52   1420   1408   1419   1408      0   1408   1420
> G30   1412 34.62    998 44.94    998    998    998    998      0    998    998
> 
> Obs below mask ( 20.00 deg)  :   3439
> Obs above mask w/ no L1      :      6
> Obs above mask w/ no L2      :     52
> Obs above mask w/ no P1 | CA :      0
> Obs above mask w/ no P2      :     52
> Obs above mask w/ low L1 S/N :      0
> Obs above mask w/ low L2 S/N :      0
> 
> Obs reported w/ code | phase :  30274
> Obs deleted (any reason)     :   3491
> Obs complete                 :  26783
> 
> No. of Rx clock offsets : 2
> Total Rx clock drift    :  0.000000 ms
> Rate of Rx clock drift  :  0.000000 ms/hr
> 
> elev (deg)  tot slps <ION rms, m>        5=%       1|m      15=%       2|m
>  85 - 90    258    0   0.000000  
>  80 - 85   1204    0   0.000000  
>  75 - 80   1161    0   0.000000  
>  70 - 75   1233    0   0.000000  
>  65 - 70   1178    0   0.000000  
>  60 - 65   1463    0   0.000000  
>  55 - 60   1483    0   0.000000  
>  50 - 55   1724    0   0.000000  
>  45 - 50   1814    0   0.000000  
>  40 - 45   2756    0   0.000000  
>  35 - 40   3124    0   0.000000  
>  30 - 35   2869    0   0.000000  
>  25 - 30   3649    0   0.000000  
>  20 - 25   2858    0   0.000000  
>  15 - 20   2508    0   0.000000  
>  10 - 15    844    0   0.000000  
>   5 - 10      0    0   0.000000  
>   0 -  5      0    0   0.000000  
>     <  0      0    0   0.000000  
> 
> MP1 RMS summary (per SV):
>                                       slips  L1 rx  L2 rx  slips  L1 rx  L2 rx
>  SV  obs>20  # del <elev> MP1 rms [m]  < 25   < 25   < 25   > 25   > 25   > 25
> G 1    105      0   25.87  0.415573      1      0      0      1      0      0
> G 2   1130      0   51.15  0.302490      2      0      0     20      0      0
> G 3   1355      8   32.35  0.429225      4      2      1     21      0      0
> G 4    992      0   44.68  0.318261      2      0      0     17      1      1
> G 5   1104      0   49.45  0.279049      2      0      0     19      0      0
> G 6   1221      0   52.89  0.315651      2      0      0     22      0      0
> G 7   1242      0   53.07  0.293642      2      0      0     22      0      0
> G 8   1263      0   53.49  0.318244      1      0      0     22      0      0
> G 9   1211      8   36.61  0.370891      3      4      1     20      0      0
> G10   1292      6   36.99  0.401659      4      1      1     21      0      0
> G11    477      0   25.17  0.444246      4      0      0      5      0      0
> G13    804      0   60.26  0.323570      1      0      0     14      0      0
> G14    393      0   43.65  0.341203      1      0      0      7      0      0
> G15   1133      0   56.55  0.296207      1      0      0     21      0      0
> G16    803      7   31.33  0.422944      3      1      1     12      0      0
> G18   1154      0   56.58  0.290363      1      0      0     22      0      0
> G19   1188      8   33.85  0.459971      2      4      1     20      0      0
> G20     83      0   25.38  0.370142      1      0      0      1      0      0
> G21   1318      0   53.48  0.399163      2      0      0     24      0      0
> G22    854      0   59.56  0.256775      1      0      0     16      0      0
> G23    527      0   50.38  0.321793      1      0      0      9      0      0
> G24    821      0   36.46  0.511669      2      0      0     13      0      0
> G26   1393      3   34.02  0.436167      3      1      1     24      0      0
> G27   1229      0   56.67  0.353435      1      0      0     22      0      0
> G28   1325      0   53.69  0.312272      2      0      0     23      0      0
> G29   1420     12   34.00  0.428193      3      1      0     24      0      1
> G30    998      0   44.94  0.270782      2      0      0     18      0      0
> 
> mean MP1 rms         :  0.356634 m
> total mean elevation : 45.75 degrees
> # MP1 obs > 20       :  26783
> # qc MP1 slips < 25  :     54
> # Rvr L1 slips < 25  :     14
> # Rvr L2 slips < 25  :      6
> # qc MP1 slips > 25  :    460
> # Rvr L1 slips > 25  :      1
> # Rvr L2 slips > 25  :      2
> 
> elev (deg)  tot slps <MP1 rms, m>        5=%       1|m      15=%       2|m
>  85 - 90    258    7   0.197475  ####=
>  80 - 85   1204   22   0.186569  ###|
>  75 - 80   1161   21   0.187243  ###|
>  70 - 75   1233   23   0.193741  ###|
>  65 - 70   1178   23   0.207612  ###|
>  60 - 65   1463   29   0.210543  ###|
>  55 - 60   1483   30   0.230830  ####|
>  50 - 55   1724   35   0.260067  ####|
>  45 - 50   1814   32   0.295831  ###|||
>  40 - 45   2756   56   0.332193  ####|||
>  35 - 40   3124   61   0.376016  ###|||||
>  30 - 35   2869   51   0.424698  ###|||||
>  25 - 30   3649   70   0.479822  ###|||||||
>  20 - 25   2858   54   0.542062  ###||||||||
>  15 - 20   2508   51   0.607967  ####||||||||
>  10 - 15    844   15   0.605434  ###|||||||||
>   5 - 10      0    0   0.000000  
>   0 -  5      0    0   0.000000  
>     <  0      0    0   0.000000  
> 
> MP2 RMS summary (per SV):
>                                       slips  L1 rx  L2 rx  slips  L1 rx  L2 rx
>  SV  obs>20  # del <elev> MP2 rms [m]  < 25   < 25   < 25   > 25   > 25   > 25
> G 1    105      0   25.87  0.616326      1      0      0      1      0      0
> G 2   1130      0   51.15  0.379312      2      0      0     20      0      0
> G 3   1355      8   32.35  0.624168      4      2      1     21      0      0
> G 4    992      0   44.68  0.555455      2      0      0     17      1      1
> G 5   1104      0   49.45  0.468890      2      0      0     19      0      0
> G 6   1221      0   52.89  0.444607      2      0      0     22      0      0
> G 7   1242      0   53.07  0.376923      2      0      0     22      0      0
> G 8   1263      0   53.49  0.392148      1      0      0     22      0      0
> G 9   1211      8   36.61  0.582384      3      4      1     20      0      0
> G10   1292      6   36.99  0.504169      4      1      1     21      0      0
> G11    477      0   25.17  0.836098      4      0      0      5      0      0
> G13    804      0   60.26  0.342345      1      0      0     14      0      0
> G14    393      0   43.65  0.395373      1      0      0      7      0      0
> G15   1133      0   56.55  0.426250      1      0      0     21      0      0
> G16    803      7   31.33  0.563354      3      1      1     12      0      0
> G18   1154      0   56.58  0.303084      1      0      0     22      0      0
> G19   1188      8   33.85  0.660394      2      4      1     20      0      0
> G20     83      0   25.38  0.412748      1      0      0      1      0      0
> G21   1318      0   53.48  0.355994      2      0      0     24      0      0
> G22    854      0   59.56  0.253225      1      0      0     16      0      0
> G23    527      0   50.38  0.444301      1      0      0      9      0      0
> G24    821      0   36.46  0.576841      2      0      0     13      0      0
> G26   1393      3   34.02  0.644836      3      1      1     24      0      0
> G27   1229      0   56.67  0.361340      1      0      0     22      0      0
> G28   1325      0   53.69  0.386642      2      0      0     23      0      0
> G29   1420     12   34.00  0.608958      3      1      0     24      0      1
> G30    998      0   44.94  0.439689      2      0      0     18      0      0
> 
> mean MP2 rms         :  0.475086 m
> total mean elevation : 45.75 degrees
> # MP2 obs > 20       :  26783
> # qc MP2 slips < 25  :     54
> # Rvr L1 slips < 25  :     14
> # Rvr L2 slips < 25  :      6
> # qc MP2 slips > 25  :    460
> # Rvr L1 slips > 25  :      1
> # Rvr L2 slips > 25  :      2
> 
> elev (deg)  tot slps <MP2 rms, m>        5=%       1|m      15=%       2|m
>  85 - 90    258    7   0.176154  ####=
>  80 - 85   1204   22   0.193005  ###|
>  75 - 80   1161   21   0.194765  ###|
>  70 - 75   1233   23   0.215510  ###|
>  65 - 70   1178   23   0.232657  ###||
>  60 - 65   1463   29   0.240745  ###||
>  55 - 60   1483   30   0.304027  ####||
>  50 - 55   1724   35   0.408210  ####||||
>  45 - 50   1814   32   0.373817  ###||||
>  40 - 45   2756   56   0.448777  ####|||||
>  35 - 40   3124   61   0.541656  ###||||||||
>  30 - 35   2869   51   0.564331  ###||||||||
>  25 - 30   3649   70   0.642548  ###||||||||||
>  20 - 25   2858   54   0.753844  ###||||||||||||
>  15 - 20   2508   51   0.762864  ####|||||||||||
>  10 - 15    844   15   0.672284  ###||||||||||
>   5 - 10      0    0   0.000000  
>   0 -  5      0    0   0.000000  
>     <  0      0    0   0.000000  
> 
> S/N L1 summary (per elevation bin):
> elev (deg)  tot SN1 sig    mean                    0|5                 1|0
>  85 - 90    258   0.632    7.097 ###|||||||||||||||||||||||||
>  80 - 85   1205   0.415    7.061 ##||||||||||||||||||||||||||
>  75 - 80   1161   0.405    7.083 ##||||||||||||||||||||||||||
>  70 - 75   1233   0.488    7.222 ##|||||||||||||||||||||||||||
>  65 - 70   1178   0.462    7.193 ##|||||||||||||||||||||||||||
>  60 - 65   1464   0.441    7.184 ##|||||||||||||||||||||||||||
>  55 - 60   1483   0.372    7.064 #|||||||||||||||||||||||||||
>  50 - 55   1725   0.318    6.969 #|||||||||||||||||||||||||||
>  45 - 50   1814   0.372    6.903 #|||||||||||||||||||||||||||
>  40 - 45   2756   0.400    6.825 ##|||||||||||||||||||||||||
>  35 - 40   3124   0.503    6.616 ##||||||||||||||||||||||||
>  30 - 35   2870   0.508    6.290 ##|||||||||||||||||||||||
>  25 - 30   3653   0.486    5.983 ##||||||||||||||||||||||
>  20 - 25   2905   0.698    5.741 ###||||||||||||||||||||
>  15 - 20   2521   0.663    5.506 ###|||||||||||||||||||
>  10 - 15    903   1.192    4.792 #####||||||||||||||
>   5 - 10      0   0.000    0.000 
>   0 -  5      0   0.000    0.000 
>     <  0      0   0.000    0.000 
> 
> S/N L2 summary (per elevation bin):
> elev (deg)  tot SN2 sig    mean                    0|5                 1|0
>  85 - 90    258   0.560    8.965 ##||||||||||||||||||||||||||||||||||
>  80 - 85   1205   0.259    8.993 #|||||||||||||||||||||||||||||||||||
>  75 - 80   1161   0.277    8.985 #|||||||||||||||||||||||||||||||||||
>  70 - 75   1233   0.259    8.991 #|||||||||||||||||||||||||||||||||||
>  65 - 70   1178   0.324    8.954 #|||||||||||||||||||||||||||||||||||
>  60 - 65   1464   0.347    8.923 #|||||||||||||||||||||||||||||||||||
>  55 - 60   1483   0.546    8.531 ##||||||||||||||||||||||||||||||||
>  50 - 55   1725   0.459    8.216 ##|||||||||||||||||||||||||||||||
>  45 - 50   1814   0.272    8.035 #|||||||||||||||||||||||||||||||
>  40 - 45   2756   0.152    7.997 #|||||||||||||||||||||||||||||||
>  35 - 40   3124   0.285    7.932 #|||||||||||||||||||||||||||||||
>  30 - 35   2870   0.500    7.359 ##|||||||||||||||||||||||||||
>  25 - 30   3651   0.295    7.034 #|||||||||||||||||||||||||||
>  20 - 25   2861   0.362    6.895 #|||||||||||||||||||||||||||
>  15 - 20   2509   0.522    6.424 ##||||||||||||||||||||||||
>  10 - 15    861   0.532    6.035 ##||||||||||||||||||||||
>   5 - 10      0   0.000    0.000 
>   0 -  5      0   0.000    0.000 
>     <  0      0   0.000    0.000 
> 
> 
> ------------------------------------------------------------------------
> 
>  SV+------------------------------------------------------------------------+ SV
>   1|CCCCCCCCCCC-_                       ______                   _-CCCCCCCCC|  1
>   2|        ________                __CCCCmCCCCCCCoCCC-_                    |  2
>   3|           __CCCCmoCCCC-_                            _-CCCmCCCoCCC-_    |  3
>   4|    __---CCCI__              _-CCCCCCCmCCCCC--_                         |  4
>   5|---__                          __-CCCCmCCCCCCCoC-__               ___---|  5
>   6|        ______                         _-CCCCCoCCCCCoCCCC-__            |  6
>   7|_____                 _-CCCCCCCCCCCCCCmCC-_                         ____|  7
>   8|            __-CCmoCCCCCCCCCCCCC-_                    ____              |  8
>   9|                           _--CCCCCCCCmCC--_             __-CCoCCCC-__  |  9
>  10|             __---oCCCCC__             _-CCCCCoCCCCCoC-_                | 10
>  11|CCCCCCC-_            __-CCCCCCCC-__                           _--CCCCCCC| 11
>  13|     _-CCCCCCCCCCmoCCCCC_                  _______                      | 13
>  14|CCCCCC-_                         _______                 __CCCoCCCCCCCCC| 14
>  15|                    ____                        _-CCoCCCCCmCCCoCCCC-_   | 15
>  16|    _mCCCCCCCCCCCm-_                           __--CoCCCCC-_            | 16
>  18|                        ______                  _-CCoCCCCCmCCCoCCCC-_   | 18
>  19|_             _-CmoCCCCCCCC-_                           _--CCCoCCCCCC__ | 19
>  20|CCCCCCCCCCCCCCC-_               __-----__                          _-CCC| 20
>  21|                                           __-oCCCCCoCCCCCmCCCoC_       | 21
>  22|CC-_                        __                      _-CCCCmCCCoCCCCCCCCC| 22
>  23| _-CCCCCCCCCCCCCCmoC-_                    ____                        __| 23
>  24|_--CCCCCCCCC__            _-CCCCCCCCCCmC-_                           _--| 24
>  26|                    __-CCCCCCCCCC-_             _-CCoCCCCCmCC__         | 26
>  27|        __-CCCCCCmoCCCCCCCCCC__                     ___                 | 27
>  28|                _--CCCCCCCCCCCCCCCCC-_                        ___       | 28
>  29|                   _--CCCCCCCCCC-_             _-CCCoCCCCCm-_           | 29
>  30|-CCCCC-__                          __--CCCCCCCoCCCC-__             __-CC| 30
>  31|____                _-----------------__                          ______| 31
>  25|CCCCCCCCCCCC-_                          __-----___              __CCCCCC| 25
>  12|---__                          __----------------__               ___---| 12
>  32|-------__                          __---------------__             __---| 32
> -dn|2311111         1     12111112111123332222233322221   1         1    132|-dn
> +dn|455312431c112122112 21353122222234334542553344324662 221 3241 1111231445|+dn
> +10|abb99ab988997678899899aa999999aaa9aaaba9aa9999989bba89a99a9a989999a96abb|+10
> Pos|ooooooo   o                    o                  oo   ooo oo oo ooo    |Pos
> Clk|         ^        +                     +     +     +         +         |Clk
>    +----|-------|--------|--------|--------|-------|--------|--------|------+
> 16:33:00.000                                                        17:21:45.005
> 2005 Aug 10                                                          2005 Aug 11
> 
> *********************
> QC of RINEX  file(s) : BOND222.05o
> input RnxNAV file(s) : brdc2220.05n
>                        BOND222.05n
> *********************
> 
> Time of start of window : 2005 Aug 10  16:33:00.000
> Time of  end  of window : 2005 Aug 11  17:21:45.005
> Time line window length : 24.81 hour(s), ticked every 3.0 hour(s)
>   antenna WGS 84 (xyz)  : -1926665.8386 -3725211.6035 4789967.4255 (m)
>   antenna WGS 84 (geo)  : N  48 deg 59' 10.36"  W 117 deg 20' 52.22"
>   antenna WGS 84 (geo)  :   48.986210 deg   242.652160 deg
>           WGS 84 height : 549.9227 m
> |qc - header| position  : 170 m
> Observation interval    : 15.0000 seconds
> Total satellites w/ obs : 28
> NAVSTAR GPS SVs w/o OBS : 12  17  31  32 
> NAVSTAR GPS SVs w/o NAV :
> Rx tracking capability  : 12 SVs
> Poss. # of obs epochs   :   5956
> Epochs w/ observations  :   5956
> Possible obs >   0.0 deg:  62105
> Possible obs >  10.0 deg:  47168
> Complete obs >  10.0 deg:  41817
>  Deleted obs >  10.0 deg:    177
> Moving average MP1      : 0.326767 m
> Moving average MP2      : 0.455630 m
> Points in MP moving avg : 50
> No. of Rx clock offsets : 5
> Total Rx clock drift    : +5.000000 ms
> Rate of Rx clock drift  : +0.202 ms/hr
> Avg time between resets : 297.750 minute(s)
> Report gap > than       : 10.00 minute(s)
> epochs w/ msec clk slip : 77
> other msec mp events    : 48 (: 1191)   {expect <= 1:50}
> IOD signifying a slip   : >400.0 cm/minute
> IOD slips <  10.0 deg*  :      0
> IOD slips >  10.0 deg   :      4
> IOD or MP slips <  10.0*:      0
> IOD or MP slips >  10.0 :    595
>  * or unknown elevation
>       first epoch    last epoch    hrs   dt  #expt  #have   %   mp1   mp2 o/slps
> SUM 05  8 10 16:33 05  8 11 17:21 24.81  15  47168  41817  89  0.33  0.46     70
> 
> 
> 
> Processing parameters are:
> Receiver tracking capability       : 12 SVs
> Maximum ionospheric rate (L1)      : 400.00 cm/min
> Report data gap greater than       : 10.00 min
> Expected rms level of P1 multipath : 50.00 cm
> Expected rms level of P2 multipath : 65.00 cm
> Multipath slip sigma threshold     : 4.00 cm
> % increase in MP rms for C/A | A/S : 100.00 %
> Points in MP moving averages       : 50
> Minimum signal to noise for L1     : 0
> Minimum signal to noise for L2     : 0
> Elevation mask (cutoff)            : 10.00 degrees
> Elevation comparison threshold     : 25.00 degrees
> Orbit path spline fit sample time  : 10 min
> SVs w/ code data for position try  : 5
> Width of ASCII summary plot        : 72
> Data indicators on summary plot    : yes
> Do ionospheric observable          : yes
> Do ionospheric derivative          : yes
> Do high-pass ionosphere observable : no
> Do multipath observables           : yes
> Do 1-ms receiver clock slips       : yes
> Tolerance for 1-ms clock slips     : 1.00e-02 ms
> Do receiver LLI slips              : yes
> Do plot file(s)                    : no
> 
> Observations start   : 2005 Aug 10 16:33:00.000
> Observations  end    : 2005 Aug 11 17:21:45.005
> Observation interval : 15.0000 second(s)
> 
>  SV  #+hor <ele> #+mask <ele> #reprt #compl    L1     L2     P1     P2     CA
> --- ------ ----- ------ ----- ------ ------ ------ ------ ------ ------ ------
> G 1   2273 40.20   1703 52.52   1639   1639   1639   1639      0   1639   1639
> G 2   2126 30.81   1330 45.71   1267   1267   1267   1267      0   1267   1267
> G 3   2319 23.18   1854 27.75   1620   1619   1620   1619      0   1619   1620
> G 4   2256 26.28   1761 32.24   1376   1356   1367   1356      0   1360   1376
> G 5   2368 27.67   1671 36.85   1244   1244   1244   1244      0   1244   1244
> G 6   2058 34.01   1427 47.41   1363   1362   1363   1362      0   1362   1363
> G 7   2291 31.51   1446 47.69   1384   1384   1384   1384      0   1384   1384
> G 8   1979 36.48   1469 48.09   1407   1406   1406   1406      0   1406   1407
> G 9   2260 24.90   1805 29.92   1573   1562   1570   1562      0   1564   1573
> G10   2286 25.57   1832 30.67   1527   1514   1524   1514      0   1514   1527
> G11   2527 24.77   2044 29.45   1813   1802   1811   1802      0   1803   1813
> G13   2126 33.21   1400 47.82   1334   1328   1333   1328      0   1329   1334
> G14   2349 34.75   1613 48.28   1550   1550   1550   1550      0   1550   1550
> G15   1959 36.76   1463 48.21   1402   1401   1401   1401      0   1401   1402
> G16   2311 24.82   1852 29.74   1551   1540   1549   1540      0   1540   1551
> G18   2034 35.82   1462 48.52   1401   1401   1401   1401      0   1401   1401
> G19   2399 23.36   1886 28.44   1646   1634   1643   1634      0   1635   1646
> G20   2398 28.96   1817 36.54   1446   1442   1446   1442      0   1442   1446
> G21   1730 43.10   1521 48.34   1458   1458   1458   1458      0   1458   1458
> G22   2097 37.51   1715 45.12   1621   1621   1621   1621      0   1621   1621
> G23   2088 35.00   1472 48.25   1407   1406   1407   1406      0   1406   1407
> G24   2549 23.05   1989 28.14   1637   1610   1632   1610      0   1610   1637
> G26   2292 24.77   1861 29.36   1630   1611   1627   1611      0   1611   1630
> G27   1888 40.73   1555 48.76   1494   1493   1493   1493      0   1493   1494
> G28   1912 39.40   1528 48.55   1468   1468   1468   1468      0   1468   1468
> G29   2340 24.71   1901 29.27   1661   1645   1661   1645      0   1645   1661
> G30   2443 25.30   1919 30.78   1635   1624   1632   1624      0   1625   1635
> G25   2447 30.76   1872 38.61   1440   1430   1439   1430      0   1430   1440
> G31   2314 28.29   1320 45.13      0      0      0      0      0      0      0
> G12   2368 27.67   1671 36.85      0      0      0      0      0      0      0
> G32   2443 25.30   1919 30.78      0      0      0      0      0      0      0
> 
> Obs below mask ( 10.00 deg)  :      0
> Obs above mask w/ no L1      :     38
> Obs above mask w/ no L2      :    177
> Obs above mask w/ no P1 | CA :      0
> Obs above mask w/ no P2      :    167
> Obs above mask w/ low L1 S/N :      0
> Obs above mask w/ low L2 S/N :      0
> 
> Obs reported w/ code | phase :  41994
> Obs deleted (any reason)     :    177
> Obs complete                 :  41817
> 
> No. of Rx clock offsets : 5
> Total Rx clock drift    : +5.000000 ms
> Rate of Rx clock drift  : +0.201511 ms/hr
> 
> elev (deg)  tot slps <ION rms, m>        5=%       1|m      15=%       2|m
>  85 - 90    421    0   0.000000  
>  80 - 85   1645    0   0.000000  
>  75 - 80   1440    0   0.000000  
>  70 - 75   1702    0   0.000000  
>  65 - 70   1652    0   0.000000  
>  60 - 65   1984    0   0.000000  
>  55 - 60   2042    0   0.000000  
>  50 - 55   2455    0   0.000000  
>  45 - 50   2764    0   0.000000  
>  40 - 45   3622    0   0.000000  
>  35 - 40   3791    0   0.000000  
>  30 - 35   4000    0   0.000000  
>  25 - 30   4700    0   0.000000  
>  20 - 25   4052    3   0.000000  
>  15 - 20   4163    0   0.000000  
>  10 - 15   1356    1   0.000000  
>   5 - 10      0    0   0.000000  
>   0 -  5      0    0   0.000000  
>     <  0      0    0   0.000000  
> 
> MP1 RMS summary (per SV):
>                                       slips  L1 rx  L2 rx  slips  L1 rx  L2 rx
>  SV  obs>10  # del <elev> MP1 rms [m]  < 25   < 25   < 25   > 25   > 25   > 25
> G 1   1639      0   54.12  0.247017      4      1      1     21      0      0
> G 2   1267      0   47.47  0.277225      4      1      1     12      0      0
> G 3   1620      1   29.79  0.409238      8      4      3     15      0      0
> G 4   1376     20   37.53  0.350258      8     13      4     11      0      0
> G 5   1244      0   45.81  0.265145      3      1      1     12      0      0
> G 6   1363      1   49.18  0.311319      3      1      1     13      0      0
> G 7   1384      0   49.37  0.264709      3      1      1     17      0      0
> G 8   1407      1   49.78  0.302090      4      0      1     18      0      0
> G 9   1573     11   32.48  0.391693      5     10      5     15      0      0
> G10   1527     13   33.98  0.351291      6      4      2     13      0      0
> G11   1813     11   31.62  0.391164     11      4      3     19      0      0
> G13   1334      6   49.82  0.296530      4      3      0     18      0      0
> G14   1550      0   49.79  0.274458      5      1      1     17      0      0
> G15   1402      1   49.89  0.269789      3      0      1     14      0      0
> G16   1551     11   32.77  0.391002      8      7      2     16      0      0
> G18   1401      0   50.19  0.248126      4      1      1     13      0      0
> G19   1646     12   30.60  0.404827      8      9      2     17      0      0
> G20   1446      4   42.95  0.271807      5      1      1     18      0      0
> G21   1458      0   49.98  0.319668      2      1      1     15      0      0
> G22   1621      0   47.11  0.296862      7      1      1     15      0      0
> G23   1407      1   50.00  0.298309      5      1      1     18      0      0
> G24   1637     27   31.29  0.430253      6     11      3     19      0      0
> G26   1630     19   31.65  0.381813      6      6      3     17      0      0
> G27   1494      1   50.36  0.310013      4      0      1     20      0      0
> G28   1468      0   50.12  0.275685      3      1      1     20      0      0
> G29   1661     16   31.56  0.396694      6      4      2     17      0      0
> G30   1635     11   34.15  0.376219      9      6      3     11      0      0
> G25   1440     10   46.71  0.259584      3      3      1     19      0      0
> 
> mean MP1 rms         :  0.326765 m
> total mean elevation : 42.07 degrees
> # MP1 obs > 10       :  41817
> # qc MP1 slips < 25  :    147
> # Rvr L1 slips < 25  :     96
> # Rvr L2 slips < 25  :     48
> # qc MP1 slips > 25  :    450
> # Rvr L1 slips > 25  :      0
> # Rvr L2 slips > 25  :      0
> 
> elev (deg)  tot slps <MP1 rms, m>        5=%       1|m      15=%       2|m
>  85 - 90    421    6   0.096574  ##
>  80 - 85   1645   22   0.106884  ##
>  75 - 80   1440   21   0.119383  ##
>  70 - 75   1702   23   0.137318  ##|
>  65 - 70   1652   26   0.143340  ###
>  60 - 65   1984   25   0.161469  ##|
>  55 - 60   2042   32   0.220311  ###|
>  50 - 55   2455   32   0.211627  ##||
>  45 - 50   2764   42   0.230028  ###||
>  40 - 45   3622   49   0.247781  ##|||
>  35 - 40   3791   51   0.285093  ##||||
>  30 - 35   4000   58   0.323918  ##||||
>  25 - 30   4700   63   0.429060  ##|||||||
>  20 - 25   4052   61   0.483025  ###|||||||
>  15 - 20   4163   62   0.475864  ##||||||||
>  10 - 15   1356   24   0.538153  ###||||||||
>   5 - 10      0    0   0.000000  
>   0 -  5      0    0   0.000000  
>     <  0      0    0   0.000000  
> 
> MP2 RMS summary (per SV):
>                                       slips  L1 rx  L2 rx  slips  L1 rx  L2 rx
>  SV  obs>10  # del <elev> MP2 rms [m]  < 25   < 25   < 25   > 25   > 25   > 25
> G 1   1639      0   54.12  0.390078      4      1      1     21      0      0
> G 2   1267      0   47.47  0.379848      4      1      1     12      0      0
> G 3   1620      1   29.79  0.525229      8      4      3     15      0      0
> G 4   1376     20   37.53  0.472679      8     13      4     11      0      0
> G 5   1244      0   45.81  0.390704      3      1      1     12      0      0
> G 6   1363      1   49.18  0.417641      3      1      1     13      0      0
> G 7   1384      0   49.37  0.382889      3      1      1     17      0      0
> G 8   1407      1   49.78  0.466941      4      0      1     18      0      0
> G 9   1573     11   32.48  0.488273      5     10      5     15      0      0
> G10   1527     13   33.98  0.460632      6      4      2     13      0      0
> G11   1813     11   31.62  0.539369      9      4      3     19      0      0
> G13   1334      6   49.82  0.393785      4      3      0     18      0      0
> G14   1550      0   49.79  0.361832      5      1      1     17      0      0
> G15   1402      1   49.89  0.467111      3      0      1     14      0      0
> G16   1551     11   32.77  0.540997      8      7      2     16      0      0
> G18   1401      0   50.19  0.360987      4      1      1     13      0      0
> G19   1646     12   30.60  0.541567      7      9      2     17      0      0
> G20   1446      4   42.95  0.525208      5      1      1     18      0      0
> G21   1458      0   49.98  0.375648      2      1      1     15      0      0
> G22   1621      0   47.11  0.411619      7      1      1     15      0      0
> G23   1407      1   50.00  0.495683      5      1      1     18      0      0
> G24   1637     27   31.29  0.535453      6     11      3     19      0      0
> G26   1630     19   31.65  0.555615      6      6      3     17      0      0
> G27   1494      1   50.36  0.436557      4      0      1     20      0      0
> G28   1468      0   50.12  0.408704      3      1      1     20      0      0
> G29   1661     16   31.56  0.551410      6      4      2     17      0      0
> G30   1635     11   34.15  0.435108      9      6      3     11      0      0
> G25   1440     10   46.71  0.359390      3      3      1     19      0      0
> 
> mean MP2 rms         :  0.455628 m
> total mean elevation : 42.07 degrees
> # MP2 obs > 10       :  41817
> # qc MP2 slips < 25  :    144
> # Rvr L1 slips < 25  :     96
> # Rvr L2 slips < 25  :     48
> # qc MP2 slips > 25  :    450
> # Rvr L1 slips > 25  :      0
> # Rvr L2 slips > 25  :      0
> 
> elev (deg)  tot slps <MP2 rms, m>        5=%       1|m      15=%       2|m
>  85 - 90    421    6   0.274052  ##|||
>  80 - 85   1645   22   0.252520  ##|||
>  75 - 80   1440   21   0.242705  ##|||
>  70 - 75   1702   23   0.255253  ##|||
>  65 - 70   1652   26   0.270874  ###||
>  60 - 65   1984   25   0.282877  ##||||
>  55 - 60   2042   32   0.313236  ###|||
>  50 - 55   2455   32   0.359850  ##|||||
>  45 - 50   2764   42   0.385642  ###|||||
>  40 - 45   3622   49   0.399724  ##||||||
>  35 - 40   3791   51   0.423812  ##||||||
>  30 - 35   4000   58   0.432227  ##|||||||
>  25 - 30   4700   63   0.487217  ##||||||||
>  20 - 25   4052   58   0.654272  ##|||||||||||
>  15 - 20   4163   62   0.657679  ##|||||||||||
>  10 - 15   1356   24   0.711829  ###|||||||||||
>   5 - 10      0    0   0.000000  
>   0 -  5      0    0   0.000000  
>     <  0      0    0   0.000000  
> 
> S/N L1 summary (per elevation bin):
> elev (deg)  tot SN1 sig    mean                    0|5                 1|0
>  85 - 90    421   0.604    7.637 ##|||||||||||||||||||||||||||||
>  80 - 85   1645   0.526    7.587 ##||||||||||||||||||||||||||||
>  75 - 80   1441   0.526    7.611 ##||||||||||||||||||||||||||||
>  70 - 75   1702   0.514    7.636 ##|||||||||||||||||||||||||||||
>  65 - 70   1652   0.503    7.677 ##|||||||||||||||||||||||||||||
>  60 - 65   1985   0.472    7.736 ##|||||||||||||||||||||||||||||
>  55 - 60   2042   0.477    7.723 ##|||||||||||||||||||||||||||||
>  50 - 55   2455   0.520    7.551 ##||||||||||||||||||||||||||||
>  45 - 50   2765   0.530    7.504 ##||||||||||||||||||||||||||||
>  40 - 45   3623   0.504    7.285 ##|||||||||||||||||||||||||||
>  35 - 40   3791   0.398    7.002 ##||||||||||||||||||||||||||
>  30 - 35   4000   0.448    6.826 ##|||||||||||||||||||||||||
>  25 - 30   4701   0.534    6.562 ##||||||||||||||||||||||||
>  20 - 25   4135   1.018    6.138 ####|||||||||||||||||||||
>  15 - 20   4185   0.692    5.895 ###|||||||||||||||||||||
>  10 - 15   1413   1.290    5.262 #####||||||||||||||||
>   5 - 10      0   0.000    0.000 
>   0 -  5      0   0.000    0.000 
>     <  0      0   0.000    0.000 
> 
> S/N L2 summary (per elevation bin):
> elev (deg)  tot SN2 sig    mean                    0|5                 1|0
>  85 - 90    421   0.439    8.979 ##||||||||||||||||||||||||||||||||||
>  80 - 85   1645   0.222    8.995 #|||||||||||||||||||||||||||||||||||
>  75 - 80   1441   0.237    8.994 #|||||||||||||||||||||||||||||||||||
>  70 - 75   1702   0.218    8.995 #|||||||||||||||||||||||||||||||||||
>  65 - 70   1652   0.221    8.995 #|||||||||||||||||||||||||||||||||||
>  60 - 65   1985   0.202    8.995 #|||||||||||||||||||||||||||||||||||
>  55 - 60   2042   0.199    8.996 #|||||||||||||||||||||||||||||||||||
>  50 - 55   2455   0.182    8.996 #|||||||||||||||||||||||||||||||||||
>  45 - 50   2765   0.171    8.997 #|||||||||||||||||||||||||||||||||||
>  40 - 45   3623   0.150    8.997 #|||||||||||||||||||||||||||||||||||
>  35 - 40   3791   0.324    8.905 #|||||||||||||||||||||||||||||||||||
>  30 - 35   4000   0.516    8.455 ##||||||||||||||||||||||||||||||||
>  25 - 30   4701   0.378    8.092 ##||||||||||||||||||||||||||||||
>  20 - 25   4058   0.587    7.747 ##|||||||||||||||||||||||||||||
>  15 - 20   4163   0.548    7.331 ##|||||||||||||||||||||||||||
>  10 - 15   1373   0.793    6.844 ###||||||||||||||||||||||||
>   5 - 10      0   0.000    0.000 
>   0 -  5      0   0.000    0.000 
>     <  0      0   0.000    0.000 
> 
> 
> ------------------------------------------------------------------------
> 
>  SV+------------------------------------------------------------------------+ SV
>   3|CCo                               mmmmmmmmmmmmmm                mmmmmmmm|  3
>  10|CCmm                cmmmmmmmmmmmmmo                               mmmmmm| 10
>  13|CCmo                                                    mmmmmmmmmmmmmmmm| 13
>  19|CCmmmm                                mmmmmmmmmmmmo               mmmmmm| 19
>  27|CCmmmmmmo                                                   mmmmmmmmmmmm| 27
>   8|CCmmmmmmmmmm                                                    mmmmmmmm|  8
>  29|CCmmmmmmmmmmm                mmmmmmmmmmm                               m| 29
>  28|CCmmmmmmmmmmmmmm                                                    mmmm| 28
>  26| Cmmmmmmmmmmmm                mmmmmmmmmmm                               | 26
>   7|  mmmmmmmmmmmmmmmmmmm                                                   |  7
>  11|   mmmmmmmmm                                mmmmmmmmmmmmmmc             | 11
>  24|       mmmmmmmmmmmmm                               mmmmmmmmmmmmo        | 24
>   9|        mmmmmmmmmmmmmmm                 mmmmmmmm                        |  9
>   4|          mmmmmmmmmmmmmmm                               mmmmmmmmm       |  4
>   5|            mmmmmmmmmmmmmmmmmo                                          |  5
>   2|             mmmmmmmmmmmmmmmmm                                mmm       |  2
>  30|                mmmmmmmmmmmmmmmmm                  mmmmmo               | 30
>   6|                   cmmmmmmmmmmmmmmmmmmo                                 |  6
>  25|                      mmmmmm                   mmmmmmmmmmmmmmmo         | 25
>  21|                        cmmmmmmmmmmmmmmmmmmmo                           | 21
>  16|                             mmmmmmmmmmm               Lmmmmmmmmmmmmm   | 16
>  15|                             mmmmmmmmmmmmmmmmmmmm                       | 15
>  18|                             mmmmmmmmmmmmmmmmmmm                        | 18
>  22|                                 mmmmmmmmmmmmmmmmmmmo                   | 22
>  14|                                       mmmmmmmmmmmmmmmmmm               | 14
>   1|                                          mmmmmmmmmmmmmmmmmmmo          |  1
>  20|                                                 mmmmmmmmmmmmmmmmmo     | 20
>  23|                                                    mmmmmmmmmmmmmmmmmmmm| 23
> Obs|899988788899887777777787777769999999999998999999777888899998998887889889|Obs
> Clk|                                                                        |Clk
>    +---------|--------|--------|--------|--------|--------|--------|--------+
> 00:00:00.000                                                        23:59:30.000
> 2005 Aug  7                                                          2005 Aug  7
> 
> *********************
> QC of RINEX  file(s) : grmd2190.05o
> *********************
> 
> Time of start of window : 2005 Aug  7  00:00:00.000
> Time of  end  of window : 2005 Aug  7  23:59:30.000
> Time line window length : 23.99 hour(s), ticked every 3.0 hour(s)
> Observation interval    : 30.0000 seconds
> Total satellites w/ obs : 28
> NAVSTAR GPS SVs w/o OBS : 12  17  31  32 
> Rx tracking capability  : 12 SVs
> Poss. # of obs epochs   :   2880
> Epochs w/ observations  :   2876
> Complete observations   :  22583
>  Deleted observations   :     33
> Moving average MP1      : 0.384458 m
> Moving average MP2      : 0.402351 m
> Points in MP moving avg : 50
> No. of Rx clock offsets : 0
> Total Rx clock drift    :  0.000000 ms
> Rate of Rx clock drift  :  0.000 ms/hr
> Avg time between resets : Inf minute(s)
> Report gap > than       : 10.00 minute(s)
>        but < than       : 90.00 minute(s)
> epochs w/ msec clk slip : 4
> other msec mp events    : 1011 (: 2096)   {expect <= 1:50}
> IOD signifying a slip   : >400.0 cm/minute
> IOD slips               :      3
> IOD or MP slips         :   1048
>       first epoch    last epoch    hrs   dt  #expt  #have   %   mp1   mp2 o/slps
> SUM 05  8  7 00:00 05  8  7 23:59 23.99  30    n/a  22583 n/a  0.38  0.40     22
> 
> 
> 
> Processing parameters are:
> Receiver tracking capability       : 12 SVs
> Maximum ionospheric rate (L1)      : 400.00 cm/min
> Report data gap greater than       : 10.00 min
>                but less than       : 90.00 min
> Expected rms level of P1 multipath : 50.00 cm
> Expected rms level of P2 multipath : 65.00 cm
> Multipath slip sigma threshold     : 4.00 cm
> % increase in MP rms for C/A | A/S : 100.00 %
> Points in MP moving averages       : 50
> Minimum signal to noise for L1     : 0
> Minimum signal to noise for L2     : 0
> Width of ASCII summary plot        : 72
> Data indicators on summary plot    : yes
> Do ionospheric observable          : yes
> Do ionospheric derivative          : yes
> Do high-pass ionosphere observable : no
> Do multipath observables           : yes
> Do 1-ms receiver clock slips       : yes
> Tolerance for 1-ms clock slips     : 1.00e-02 ms
> Do receiver LLI slips              : yes
> Do plot file(s)                    : no
> 
> Observations start   : 2005 Aug  7 00:00:00.000
> Observations  end    : 2005 Aug  7 23:59:30.000
> Observation interval : 30.0000 second(s)
> 
>  SV  #+hor <ele> #+mask <ele> #reprt #compl    L1     L2     P1     P2     CA
> --- ------ ----- ------ ----- ------ ------ ------ ------ ------ ------ ------
> G 3*     0  0.00      0  0.00    925    923    925    923      0    923    925
> G 8*     0  0.00      0  0.00    764    763    764    763      0    763    764
> G10*     0  0.00      0  0.00    931    930    931    930      0    930    931
> G13*     0  0.00      0  0.00    735    735    735    735      0    735    735
> G19*     0  0.00      0  0.00    933    933    933    933      0    933    933
> G27*     0  0.00      0  0.00    800    800    800    800      0    800    800
> G28*     0  0.00      0  0.00    773    769    773    769      0    769    773
> G29*     0  0.00      0  0.00    945    944    945    944      0    944    945
> G26*     0  0.00      0  0.00    923    923    923    923      0    923    923
> G 7*     0  0.00      0  0.00    710    710    710    710      0    710    710
> G11*     0  0.00      0  0.00    890    883    890    883      0    883    890
> G24*     0  0.00      0  0.00    946    946    946    946      0    946    946
> G 9*     0  0.00      0  0.00    875    874    875    874      0    874    875
> G 4*     0  0.00      0  0.00    894    892    894    892      0    892    894
> G 5*     0  0.00      0  0.00    680    680    680    680      0    680    680
> G 2*     0  0.00      0  0.00    730    730    730    730      0    730    730
> G30*     0  0.00      0  0.00    812    812    812    812      0    812    812
> G 6*     0  0.00      0  0.00    730    729    730    729      0    729    730
> G25*     0  0.00      0  0.00    825    819    825    819      0    819    825
> G21*     0  0.00      0  0.00    776    775    776    775      0    775    776
> G16*     0  0.00      0  0.00    928    926    928    926      0    926    928
> G15*     0  0.00      0  0.00    755    754    755    754      0    754    755
> G18*     0  0.00      0  0.00    706    705    706    705      0    705    706
> G22*     0  0.00      0  0.00    765    765    765    765      0    765    765
> G14*     0  0.00      0  0.00    685    684    685    684      0    684    685
> G 1*     0  0.00      0  0.00    744    744    744    744      0    744    744
> G20*     0  0.00      0  0.00    676    675    676    675      0    675    676
> G23*     0  0.00      0  0.00    760    760    760    760      0    760    760
>    * = SV with no NAV info
> Obs            w/ no L1      :      0
> Obs            w/ no L2      :     33
> Obs            w/ no P1 | CA :      0
> Obs            w/ no P2      :     33
> Obs            w/ low L1 S/N :      0
> Obs            w/ low L2 S/N :      0
> 
> Obs reported w/ code | phase :  22616
> Obs deleted (any reason)     :     33
> Obs complete                 :  22583
> 
> No. of Rx clock offsets : 0
> Total Rx clock drift    :  0.000000 ms
> Rate of Rx clock drift  :  0.000000 ms/hr
> 
> MP1 RMS summary (per SV):
> 
>                                       slips  L1 rx  L2 rx
>  SV    obs   # del <elev> MP1 rms [m]  all    all    all
> G 3*   925      2    0.00  0.458854     43      0      0
> G 8*   764      1    0.00  0.328504     36      0      0
> G10*   931      1    0.00  0.432894     43      0      0
> G13*   735      0    0.00  0.347218     34      0      0
> G19*   933      0    0.00  0.424107     43      0      0
> G27*   800      0    0.00  0.327217     37      0      0
> G28*   773      4    0.00  0.315452     36      0      0
> G29*   945      1    0.00  0.399142     45      0      0
> G26*   923      0    0.00  0.432438     43      0      0
> G 7*   710      0    0.00  0.325294     33      0      0
> G11*   890      7    0.00  0.412356     41      0      0
> G24*   946      0    0.00  0.416552     44      0      0
> G 9*   875      1    0.00  0.448600     41      1      0
> G 4*   894      2    0.00  0.536928     41      0      0
> G 5*   680      0    0.00  0.353124     31      0      0
> G 2*   730      0    0.00  0.367306     33      0      0
> G30*   812      0    0.00  0.472925     37      0      0
> G 6*   730      1    0.00  0.323736     34      0      0
> G25*   825      6    0.00  0.471208     38      0      0
> G21*   776      1    0.00  0.312196     36      0      0
> G16*   928      2    0.00  0.427789     42      0      1
> G15*   755      1    0.00  0.312417     35      0      0
> G18*   706      1    0.00  0.292708     33      0      0
> G22*   765      0    0.00  0.285271     35      0      1
> G14*   685      1    0.00  0.365960     32      0      0
> G 1*   744      0    0.00  0.340249     34      0      1
> G20*   676      1    0.00  0.362816     33      0      0
> G23*   760      0    0.00  0.333326     35      0      0
>    * = SV with no NAV info
> 
> mean MP1 rms         :  0.384458 m
> # MP1 obs            :  22583
> # MP1 slips          :   1048
> # Rvr L1 slips       :      1
> # Rvr L2 slips       :      3
> 
> MP2 RMS summary (per SV):
> 
>                                       slips  L1 rx  L2 rx
>  SV    obs   # del <elev> MP2 rms [m]  all    all    all
> G 3*   925      2    0.00  0.477858     43      0      0
> G 8*   764      1    0.00  0.335497     36      0      0
> G10*   931      1    0.00  0.450334     43      0      0
> G13*   735      0    0.00  0.341508     34      0      0
> G19*   933      0    0.00  0.443213     43      0      0
> G27*   800      0    0.00  0.364125     37      0      0
> G28*   773      4    0.00  0.303957     36      0      0
> G29*   945      1    0.00  0.433840     45      0      0
> G26*   923      0    0.00  0.393199     43      0      0
> G 7*   710      0    0.00  0.328180     33      0      0
> G11*   890      7    0.00  0.537604     41      0      0
> G24*   946      0    0.00  0.463966     44      0      0
> G 9*   875      1    0.00  0.466188     41      1      0
> G 4*   894      2    0.00  0.497740     41      0      0
> G 5*   680      0    0.00  0.397530     31      0      0
> G 2*   730      0    0.00  0.351823     33      0      0
> G30*   812      0    0.00  0.445597     37      0      0
> G 6*   730      1    0.00  0.356488     34      0      0
> G25*   825      6    0.00  0.469501     38      0      0
> G21*   776      1    0.00  0.354433     36      0      0
> G16*   928      2    0.00  0.470584     42      0      1
> G15*   755      1    0.00  0.338473     35      0      0
> G18*   706      1    0.00  0.325811     33      0      0
> G22*   765      0    0.00  0.378443     35      0      1
> G14*   685      1    0.00  0.327171     32      0      0
> G 1*   744      0    0.00  0.318364     34      0      1
> G20*   676      1    0.00  0.363915     33      0      0
> G23*   760      0    0.00  0.376066     35      0      0
>    * = SV with no NAV info
> 
> mean MP2 rms         :  0.402351 m
> # MP2 obs            :  22583
> # MP2 slips          :   1048
> # Rvr L1 slips       :      1
> # Rvr L2 slips       :      3
> 
> 
> ------------------------------------------------------------------------
> 
> DESCRIPTION
> Some receivers with cheap internal  oscillators  like  the 
> Ashtech or Trimble receivers have "steered clocks" - clocks which are
> periodically reset to keep them within 1 millisecond of  GPS  time.
> The reset  is actually  done  with  a  software counter, and the clock
> adjustement is always +1 or -1 millisecond.  Note that the  TurboRogue
> receiver  does not steer it's clock in the same way.
>  
> These  receivers  do  not output a physically consistent set of observ-
> ables. Due to the clock  behavior,  the  phase  and  range observables
> should  both  have  a sawtooth clock signature; however, only the range
> observables have the sawtooth. The phase is computed based on
> the true oscillator, without the offsets introduced by the clock
> adjustments.
>  
> The programs currently used to convert the raw data files to RINEX for-
> mat change the observables, but also do not produce a physically  con-
> sistent set of observables. The standard approach is to change the time
> tag of the data when the receiver adjusts its clock. The sawtooth clock
> is  removed  from  the code observables. Some RINEX files may have been
> converted differently; these files are simply a  transcription of  the
> raw data file, with no changes to the time tags or the observables.
>  
> NOTE:  Failure  to  run  CLOCKPREP  on a file from a Trimble or Ashtech 
> receiver converted to RINEX in the standard way will result in a solu-
> tion  that  is  WRONG,  but has no obvious symptoms of wrongness, other
> than a comparison to a correct solution. The solution  will  be
> biased primarily  in the east component. Residuals will appear normal.
> This is an insidious problem, and it arises because of the change of
> time  tags-  this  appears to produce a physically consistent set of
> observables, but the altered time tags will result in biases to the solution
> due to earth and satellite motions.
>  
> CLOCKPREP  determines  what (if anything) must be done to the file, and
> produces a physically consistent set of observables. If necessary,  it
> corrects  the  time  tags  back  to their proper values and
> adjusts the observables if necessary. If CLOCKPREP has  already  been  run,
> or  if there are no clock offsets in the file, a warning message is
> printed an execution is stopped.
> 
> 
> ------------------------------------------------------------------------
> 
> _______________________________________________
> teqc mailing list
> teqc at ls.unavco.org
> http://ls.unavco.org/mailman/listinfo/teqc


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