TABLE 56 Altitude (MSL) feet Surface 1,000 2,000 3,000 4,000 5,000 6,000 7,000 8,000 9,000 10 ,000 12,000 14,000 15 ,000 16,000 18,000 20 ,000 23,000 25,000 30,000 35,000 40,000 45,000 BIKINI WIND DATA FOR OPERATION HARDIACK I H-hour Dir Speed degrees mph 090 09 050 23 080 080 080 23 23 ok 080 080 080 28 36 36 090 090 090 090 090 100 100 110 2h 21 22 20 17 18 14 15 090 080 090 090 080 O70 050 O70 31 29 eu 22 15 12 13 14 090 (100) 100 110 110 100 060 Calm 160 --- ~-- bh 16 (070) (10) -- OO 20 20 21 12 09 06 Calm 08 -- ~---~-~-- ----- 72,000 ~-- -- --- 090 (17) 50,000 55 ,000 60,000 65 , 000 70,000 H+6hours Dir Speed degrees mph -- 060 oo oo 030 --010 100 110 08 15 16 06 -OT 08 09 HICK ORY H+12 hours Dir Speed degrees mph 080 080 080 080 080 O70 060 060 O70 090 090 O70 O70 (070) O70 060 030 oko 010 050 110 O70 020 17 22 ok 23 21 20 21 21 18 el 20 21 21 (21) 21 23 15 09 16 03 12 08 14 140 350 070 120 10 12 Lo 25 060 350 080 090 03 28 35 18 060 41 --- -- O70 41 080 62 NOTES: 1. Numbers in parentheses are estimated values. 2. Wind data was taken on board ship within 30 nautical miles of 3. 4. the tower at Nan Island, Bikini Atoll. Tropopause height was 51,000 ft MSL. The surface air pressure was 14.65 psi, the temperature 27.8°C, the dew point 81.3°F, and the relative humidity 844%. 272