en 



69 



71 





TIME 



(YEAR) 



ONTOUR : 



MLW 



73 



H 1- 1 1 ^ 



S3 71 7: 



TIME (YEAR] 

 CONTOUR : MLW 



69 71 i: 

 TIME (TEAR) 



CONTOUR : M5L 



69 



1 *z 1 — 



71 



TIME (YEAR] 

 CONTOUR : MSL 



73 



69 71 73 



TIME (YEAR] 



CONTOUR : MHW 



o _, 



69 



71 73 



TIME IT EAR] 



CONTOUR : MHW 



FB 13. FB 14 



DISTANCE FROM THE BASE LINE TO STATED CONTOURS 



177 



