TABLE VI (cont'd) 
SUMMER (warmest month) 
Surface 
10 feet 0.8]|-0.1 0.3 
20 feet 2.1 0.5] 0.5 
30 feet 2.5]/-1.0}] 0.9 
50 feet 3.9|j-1.7 1.6 
70 feet 4.5]||-3.2 3.0 
100 feet 4.3||-4.6 ] 4.1 
150 feet 4.0}//-5.5] 4.8 
180 feet 5.0/]/-8.1 3.9 
All values of € and g, are oF, 
25 
