TABLE VII (cont'd) 
SUMMER (warmest month) 
Surface 0 
10 feet 0.5 0.7 0.3 
20 feet 1.0 les 0.5 
30 feet ei (an 0.7 
50 feet 4,1 4,4 0.7 
70 feet 5.8 6.5 1.6 
100 feet 6.7 9.3 325 
150 feet 7.4 9.1 4.8 
180 feet Call 9.3 5.4 
All values of ¢ and g, are ony. 
27 
