100- 



200- 



300- 



400- 



500- 



75 



76 



77 78 



-^2 



« * 



:23.4{ 



_-26.8' 



27.2 



30 

 I 



NAUTICAL MILES 



600 L 



5 E 



10° 



Figure 48— Vertical distribution of density (sigma-f) for Undaunted 6801, phase II; stations 71-78; 12 March 1968 



53 



