after. The height-to-top data are good for nearly 4 minutes and then becomepoor as the cloud spreads out and obscures the top. The thunderhead and height-to-bottom data are considered good. The K—17C film exposed in-the RB—36 plane is a particularly good record of the growth during the first 45 seconds. The shock waveis visible in the air for about 7 seconds, TABLE 5.1 Film EG&G 24067 24068 24069 Number LML FILMS EXPOSED, SHOT 1 Location 117D 117¢ LIA Nav. Data RBIG RB36 | OK OK 24070 24071 1178 ALD12 "$482 RBI 5615 OK 24072 24073 24074 24050 24051 ALD? ALDIO ALDI 5561 5615 §482 HOW HOW Poor Fair None - None Fair . Comments Poor timing, read 1.5 minute Poor timing, read 1.3 minute _ OK to 3.1 minutes Photos OK, not read Read 4.2 minutes Camera failure Photos fair, read @ rainutes Camerafailure No timing marks Fogged, radiation 24052 24053 24054 NAN NAN TARE OX 80 seconds OK 48 ‘seconds OK 44 seconds 24058 24056 TARE HOW OK 37 seconds Fogged, radiation 24057 24058 24063 24064 24065 - 24066 NAN TARE HOW NAN HOW NAN Fogged, Fogged, Fogged, Fogged, Fogged, Fogged, radiation radiation radiation radiation radiation radiation and its intersection with the water surface can be measured for 45 seconds. Its radius in~ creased at a constant rate of 1.31 x 10° feet/seconds to a radius of 69,000 feet by 45 seo~ onds. The-intersection circle provides an unusually good reference for the measurement ° FILMS EXPOSED, SHOT 2 Film EG&G Number LML Location Nay. Data 24567 24568 24869. 24570 24571 121E 3421C 1213 I21A ALD21 RBIG 6561 5615 6462 RBI6 OK OK OK None Fair Poor, timing errors OK 2.3 minute OK 2.0 minutes. Poor, not read OK 6.5 minutes 24872° 24573 24574 24352 24553 ALDI8 ALDI9 ALD20 5615 $482 8562 NAN NAN OK Poor OK Poor, read 10 minutes OK 10 minutes OK 7.3 minutes OK 20 seconds OK 36 seconds 24554 24558 24556 24562 TARE TARE TARE PARRY Comsoents ten TABLE 8.2 OK 25 seconds OK 35 seconds Poor OK 46 minutes of cloud heights. The later pictures from this camera are quite poor owing to the long exposures required. 5.3 SHOT 3 Because of heavy cloud cover and local rain squalls, no photographs were obtained for this shot, from the air or from the ground. 5.4 SHOT 4 The navigation data were good from one plane, fair from two, and poor from the fourth. Three films were good, four were poor, and one camera jammed. As indicated 21 Sen) SECRET