150 



50 



-50 



- 150 



^ -250 



a> 



o -350 



c 



o 



(/> 



(5 -450 



-550 



-650 



-750 



-850 



X Extrapolated Datum 

 — Data Missing 



1962 1963 1964 1965 1966 1967 1968 1969 1970 1971 1972 



Profile Line 1 



1962 1963 1964 1965 1966 1967 1968 1969 1970 1971 1972 



Profile Line 2 



126 



