100 

 _, 80 



CO 



o) 60 



40 - 



•" 20 - 



> -20 - 



•40 



60 



1962 1963 1964 1965 1966 1967 1968 1969 1970 1971 1972 

 Profile Line 9 



100 r 



10 - 



CO 



« 60 

 o 



1 40 



•^ 20 



>-20 



-40 



60 



1962 1963 1964 1965 1966 1967 1968 1969 1970 1971 1972 

 Profile Line 10 



141 



