A Slant range (kft) Ts ¢ Station over water Station over land 0. 02 0.1 1.0 Time of arrival (sec) Fig. 30-—Time of arrival vs distance from ground zero (Mike shot); data reduced to 1 Kt (RC) at sea level. Reference curves ate composite free-air curves from data on Tumbler shots 1 to 4 (from WT -513) at scaled distances out to 1400 ft; at greater distances they were obtained from data on Tumbles shot 2 (froin WT-501). - 10