





















1 

















^ 



- 



LEGEND 

 • HISTORICAL DATA 

 O EXPERIMENTAL DATA 

 — FOURIER FITTED CURVE 





ui 



z 

 < 



6 





















/ 















f * 









Q 



o 



















y 



/ 



H 





/ 



/ 













O 

 I-' 



a. 



/ 



r 















CO 



d 



< 



> 



V 















\ 



\, 













3 

 UJ 





*\ 



\ 











13 



s 



IE 







•^ 



\. 















] 











< 



of 



< 



s 

 d) 



UJ 



u. 



z 









J 

























r-e 1- 















- 



< 



°< 



Q _J Z 

 Z < u 

 UJ O 5 

 O - 2 



I UJ 



• O 





























































































































































































U3 lO 



(iJOOI/do) iN3iaVM9 



(ld)Hld3a 



60 



