28 27 26 25 24 23 22 21 20 19 18 



100 



200 



300 - 



400 



if) 

 a: 

 uj 



uj 500 



I- 



QL 

 UJ 

 Q 



800 



900 



1000 



600 - 



700 - 



22° 24° 26° 28° 30° 32° 34° 36° 38° 40° 



NORTH LATITUDE 



I60°W 



Figure 39. — Vertical section of sigma-t along 160 W. longitude, 

 stations 17-28. Points indicate observed values. 



47 



