51 52 54 



26° 



28' 



30° 32° 34' 



NORTH LATITUDE 



36° 



38° 



30° 32° 34° 36° 



NORTH LATITUDE 



Figure 71 . --Vertical section of sigma-t along 172 W. longitude; 

 Hugh M. Smith cruise 27, stations 33-44, January-February 

 1955. Contour interval 0.2. Points indicate observed values. 



Figure 72. --Same along 167 W. longitude, stations 46-54. 



66 



