Cal State University at Long Beach records sparker data using the "HIG"
A/D system.  The data is recorded at .1 millisecond sample interval.
A sample list.disk is:

list.disk
  Enter the name of the SEGY disk file to be dumped.
csudata
  ENTER THE SKIP CYCLE BETWEEN TRACES TO PRINT.
50
      SHOT    TR    RP    TR ID  RANGE DELAY NSAMPS    SI   YR DAY HR MIN SEC EOG
      1400     1     0     0  1      0     0   4001   100   95  17 18  22  57   0
      1450     1     0     0  1      0     0   4001   100   95  17 18  23  48   0
      1500     1     0     0  1      0     0   4001   100   95  17 18  24  40   0
      1550     1     0     0  1      0     0   4001   100   95  17 18  25  31   0
      1600     1     0     0  1      0     0   4001   100   95  17 18  26  24   0
      1650     1     0     0  1      0     0   4001   100   95  17 18  27  15   0
      1700     1     0     0  1      0     0   4001   100   95  17 18  28   5   0
      1750     1     0     0  1      0     0   4001   100   95  17 18  28  56   0
      1800     1     0     0  1      0     0   4001   100   95  17 18  29  47   0
      1850     1     0     0  1      0     0   4001   100   95  17 18  30  37   0
      1900     1     0     0  1      0     0   4001   100   95  17 18  31  27   0


A sample SIOSEIS sequence is:

sioseis << eof
procs diskin debias gains plot  end
diskin
    set 0 .3 ipath csudata end
end
decon
  sedts .035 .135 fillen .016 prewhi 5 end
end
filter
   pass 400 1000 ftype 0 dbdrop 6 end
end
agc
   winlen .1 center .01 end
end
gains
   type 1 alpha 1.6 end
end
plot 
  trpin 2 def .09 ann shotno tlines .01 .05 .1
  srpath sunfil nibs 75  vscale 50 nsecs .3 end
end
prout
    fno 1 lno 25 ftr 0 ltr 99999 end
end
end
eof