Extract 50 rps using an increment of 100


sioseis << eof
procs diskin filter diskoa end
diskin
   ipath gathers.day068-0000z fno 15100 lno 20000 noinc 100 end
end
filter
   ftype 0 dbdrop 48 pass 20 70 end
end
diskoa
   opath data end
end
end