120 T ———— oe Co 40 Sr OF 4s9--- ene 60----. _ BOF (een 100--- 2 ToseH400 -- Tt-- === aa OS gg-- eee 7s ~e 50-7 ee aea ~? . ab ~! I ~oO L + a APRIL 1962 ae--DT Te ee ALTITUDE, 1000 FT JANUARY THROUGH ~20 1 4 80 = 7 90 rrr ttre ee = i. i i i 120 a ee MS gi fi Th ido 3 MAY THROUGH 7 100 JRSO omnrmme 7 100 | bo; | ~2% AUGUST 1962 1 Aon, 39 fo ~ eo mn 80 pa--—----MOOnnn Fann200—Tn PE gone Te mae ef be sf f “ ' t ( t ‘ ~ Deg 500-———_——" | 0 LL. ~PQ -“50O-- j---—------ rns i se = SS ee eo ~— 90°N L i 1 l 60PN ~5 a ~5 abe 30°N | _—_ 4 ~~ 80 "Waa ----- BQ-------------4 ™~ ~~] 1 l o 1 eel 30°S 1. rm 60°S 90°S LATITUDE Fig. 10—-Stratospheric distribution of °Sr (dis/min per 1000 scf). 120 T tT TT a“so. ALTITUDE, 1000 FT 100 F ~30 | | oe 20 + ~~, 1 T a 500? 4 ee T 1 | 20 1 t ; OCTOBER 1962 \ 4 oT SEPTEMBER AND ~ J ~s . 0 4. L L L 120 v t 5 t lL TA i Lu t ; 500— ,\~5O . V4 | 100 F.-.-----.- = 1000-----~S\N | ‘ i. q Jj | ~~500? ‘ i L i 1 1 v r qT -T eh mi 1 al. qT L Tr NOVEMBER AND ; eo “O0-- DECEMBER 1962 7 SN . ~ 50 ? 4 ~ 150 ? 1 paanno eta—aste ~“ Semen ocean nnn anna eaWren 1 I 30°S i i 1 aa 60°S LATITUDE Fig. 11—Stratospheric distribution of *Sr (dis/min per 1000 scf). L 90°S

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