450 r 



350 



250 



■^ 150 



Oi 



o 50 



t= 

 o 



I/) 



■q -50 



- 150 

 -250 

 -350 



X Extrapolated Datum 



J L 



J L 



J I I L 



1962 1963 1964 1965 1966 1967 1968 1969 1970 1971 1972 



Profile Line 17 



450 r- 



350 



250 



■;:: 150 



a> 



o 50 



c 



o 



v> 



B -50 



- 150 



-250 



-350 



X Extrapolated Datum 



J I ' ■ ' I J I I ( 



1962 1963 1964 1965 1966 1967 1968 1969 1970 1971 1972 



Profile Line 18 



134 



