Extemely noisy and incomplete data; may be off end of split spread survey phone spacing 30 meters, inner offset 120 meters survey=land area=W.Africa source=Dynamite spread=offend (?) n1=2600 d1=.002 f1=.002 label1="Time (sec)" n2=96 d2=.030 f2=.120 label2="Offset (km)" n3=1 title="Oz 40" plottpow=0.163574