.£^:l 



J 20 })0 J 



«o }.}<: >« /70 J 



V 90 4 lo 4 



(o «/o f 



«. /6« / 



k. /«o 7 



Jo «<o B 



1,1. 



3_ 



/«;- /i! n /// /i 



<? /i/ />!« /J/ '<■ 



« /</ /}. 



c iff /i 



'(} '?■ 



/Jf 7Co 2tf II 



Hf If Iff a 



Zlf 2J. 



^. 



o },.c H 



ifC 



47.C (^ 



" f'o ff 



I!" n 



(,.o <; 



20 /.)t, '. Ill' l.fo I. ic Ije /. So /.fc i 



^r^t 



Ic IXC Z 



c^}^ 



Zv^\ 



(o Zfc 2. 



<o 2.JO 2. 



*c }.fc }.U J.JO J.Bo j.y 



« i.fc i 



Co iyo f. 



60 ifc 



flu /, ♦<. ft, /^Bo 



c.u> I u Leu 7 



ic Jtc 7 



20 Ho e. 



M- 



\ 



/»J 



ll.f 12 



nf If 



'^f 



/if // 



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o /A} 



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f 2lc Iff H. 



2fj 21 



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tjf 2,. 



2tf 



//« J?o n 



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V *>° }'" U 



iy '> 



Figs. 13 and 14. — Frequency of occurrence of periods of different lengths 

 derived from harmonic analysis of temperature at Buenos Aires, 1917 and 

 1918, derived from means of 3, 9 and 18 periods. 



