THATCHER, PAYNE, AND CAMERON 652 Table 2— AFRICAN AND SURROUNDING OCEAN AREA TRITIUM CONCENTRATIONS, T.U. Station Location Laboratory Jan. Feb. Mar. Apr. May June July Aug. Sept, Oct. Nov. Dec, TS 3.2 34 1961 Khartoum, Sudan Entebbe, 15°36'N 32°3S'E [IA 00°03'N $ Uganda Leopoldville, Congo 32°27°E 04°19'S 15°19 E Make, Seyche!les 04°37’S 55°27°E S Dar es Salaam, 06°52’S s Windhoek, 22°34'5 5 Tanganyika South Africa Pretoria, South Africa Malan, South Africa GoughIsland, South Atlantic Marion Island, South Atlantic 39°16 E 17°06'° E 25°45'S 28°14'E 34°21’5 18°30°E 40°19’S 09°54’W 46°53'S 37°52’E Th sls S 21 11 23 14 13 ag 32 14 12 3.4 ge 3.3 7.1 12 12 7.6 21 4.7 3.9 Os 3.9 3.4 4.5 2.9 43 3.0 5.6 9.7 23 1g 2, 6.2 15 24 16 s 16 8.8 10 5.2 5.4 12 14 $ 3.4 4.5 6.7 4.9 7,2 87 6.9 6.0 6.5 8 4.0 5.6 4.6 4.0 ié 14 9.0 &.4 7.4 634 437 475 401 365 8 16 1942 Khartoum, 15°36’N tA Sudan Entebbe, Uganda Leopoldville, Congo 52°39’ E 00°03'N 32°277E 049195 15°19 E Make, 04°37'S 8 Seychelles 55°27°E s T.4 S 38 5 22°34’S § Pretoria, 25°45'S S 16 15 16 15 Ss 14 26 4.2 &.8 9.9 5.1 9.1 15 6.2 8 7.5 6.6 4.3 4.2 td 7 ll 16 15 8 11 7.5 7.6 8.7 18 12 2t 1550 2170 L070 74 108 148 16 4.4 South Africa Malan, South Africa Gough Island, South Atlantic Marion [sland, South Atlantic 17°06 E 2°14’E 34°21'S 18°30°E 40°19°S 09°54'°W 46°59'S 37°52°E 6.0 6.1 el 10 5.5 06°52'°5 South Africa 13 23 Dar es Salaam 39°16°E 14 3.0 Windhoek, Tanganyika 23 5,6 25 1963 Khartoum, Sudan 15°36’N 32°33’ E {A Entebbe, 00°03'N 3 Uganda Leopoldville, Congo Make, Seychelles 32°27'E 04°19'S 16°19’ E 04°37'S §5°27'E Dar es Salaam, 06°52'S Tanganyika Windhoek, South Africa Pretoria, South Africa Malan, South Africa Gough Island, South Atlantic Marion fsland. South Atlantic 39°16'E 22°94'S 17°06'E 25°45'5 28°14V'E 34°21'8 18°30°E 40°19'S 09°54’°W 46°53’S 37°S2'E 727 34 5 94 292 64 5 21.6 16.6 s 21 33 23 3 46 67 48 5 37 46 $ 27 19 9,2 § 31 12 8.6 5 19 20 14 ll 16 1964 Khartoum, Sudan 15°36'N 32°33'°E IA 1000 sil oe 47 65 43 45 63 11 li 14 L2 14 (I lv 1s

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