110 



PIUKNAL INK( v >rALITIKS. 



s 





\ 







2 4 6 8 10 NOON 2468 



Fig. 7. Yrrlinil Kurce. (Unit \y.) 



o April 



-10 

 -20 



-30 



o May 



o June 



-L 



o July 



o August 



o September 



-20 



12 MID'T 



