R ^ .5 



c -5 w 



* x: 



jj tO 



to 2J 



•u 



c; 



S 



O 



o 



CD 



u^ 



a) 



>4-l 



a> 



tfl 



i 



a) 



d 



CN 



pH 



4J 



— i 



18 



