18 



O —I 



c 

 o 



(C— ' 

 U •■ 



oc 



CJ ' 



•H OC 



C E 

 CO ^ 

 00 



l-l 



o 



CN CO CO •— I 



in cm vo a\ 



0£ 



s 



•H 

 4-1 



u 



o 



m 



vD vO 00 CO 



00 CO 



m co oo co 



3 



O rl 



•H QJ 



4J X> 



cfl E 



4-» 3 



cn Z 



