SV+------------------------------------------------------------------------+ SV
 10|........................................                                | 10
 27|........................................................................| 27
 19|........................................................................| 19
  7|........................................................................|  7
 18|........................................................................| 18
  2|........................................................................|  2
  3|........................................................................|  3
 31|........................................................................| 31
 15|........................................................................| 15
Obs|999999999999999999999999999999999999999988888888888888888888888888888888|Obs
Clk|    +      +       +      +      +      +     +      +      +      +    |Clk
   +-------------|-----------------------|-----------------------|----------+
18:54:26.834                                                        19:24:24.844
1997 Feb 28                                                          1997 Feb 28

*********************
QC of RINEX  file(s) : zo2zob.obs
*********************

Time of start of window : 1997 Feb 28  18:54:26.834
Time of  end  of window : 1997 Feb 28  19:24:24.844
Time line window length : 29.97 minute(s), ticked every 10.0 minute(s)
Observation interval    : 1.0000 seconds
Total satellites w/ obs : 9
NAVSTAR GPS SVs w/o OBS :  1   4   5   6   8   9  11  12  13  14  16  17 
                          20  21  22  23  24  25  26  28  29  30  32 
Rx tracking capability  : 12 SVs
Poss. # of obs epochs   :   1799
Epochs w/ observations  :   1794
Complete observations   :      0
 Deleted observations   :  15336
Moving average MP1      : 0.000000 m
Moving average MP2      : 0.000000 m
Points in MP moving avg : 50
No. of Rx clock offsets : 10
Total Rx clock drift    : +10.000000 ms
Rate of Rx clock drift  : +20.022 ms/hr
Avg time between resets : 2.997 minute(s)
Report gap > than       : 10.00 minute(s)
       but < than       : 90.00 minute(s)
epochs w/ msec clk slip : 0
other msec mp events    : 0 (: 0)   {expect <= 1:50}
IOD signifying a slip   : >400.0 cm/minute
IOD slips               :      0
IOD or MP slips         :      0
      first epoch    last epoch    hrs   dt  #expt  #have   %   mp1   mp2 o/slps
SUM 97  2 28 18:54 97  2 28 19:24 .4994   1    n/a      0 n/a  0.00  0.00      0

! Notice ! probably codeless (squaring) rx