51 



to 

 tn 



< 



o. 



X 



o 



tn 



< 



1.0 







1.8 



0.8 







1.6 



0.8 







1^ 



0.4 



5 





OS 



0.2 







0.4 









_ 







s 



CM 



20 40 60 



FRACTION NUMBER 



80 



1.0 





1.8 



0.8 





1.8 



0.8 o 

 0.4 5 







0.2 





0.4 













20 40 60 



FRACTION NUMBER 



