22 SOLAR DIURNAL VARIATION 



(C). SoLAR-DlURXAL VARIATION OF THE MAGNETIC DiP OcTUBER TO MaRCH, 1841 18-15. 



(Expressed in minutes.) 



d f 

 ^ I 



+0.'8 

 .6 

 .4 

 .2 

 October 



.2 

 .4 



+0.'G 



.4 



.2 







•2 h "\. / J. - +.8 



-.4 I M-- AX ^ .6 



.2 

 

 .2 

 .4 

 — 6 



+ -8 

 .6 

 .4 

 .2 

 

 .2 



— .4 



+ .8 

 .6 

 .4 

 .2 

 

 .2 

 .4 



— 6 



+ .8 

 .6 

 .4 

 .2 

 

 .2 

 .4 



— .6 



1 1 1 1 1 1 



/ 



1 i 1 1 1 



1 1 1 1 1 



- 



; '^'^^ 



/ 





■^•■-^ 



- 



~"\.^ 



/ 







^ 



— 1 — 1 — 1 — 1 — 



/ 



J 

 / 



\ 



\ 



./■ 



- 



1 1 1 1 



/ 



/ 



\ 



-^^ 



- 



; ^-^ 



•/ 



' 1 



\ 



X. 





- 



i 1 1 1 1 



1 1 1 1 i 



1 1 1 I 1 



1 1 1 1 1 





February 



1o 



14 16 18 20 32 24'' 



Pliiladelphia mean time. 



