phone spacing 50 meters, inner offset 250 meters
survey=marine area=S.Amer source=Airgun spread=offend
n1=2000 d1=.004 f1=.004 label1="Time (sec)" 
n2=48 d2=.050 f2=.250 label2="Offset (km)"
n3=1 
title="Oz 17" 
plottpow=2.542725