TABLE I: Mean Temperatures at Brookhaven during June 1951:

Time EST	Mean 9-foot Temperature	Mean 355-foot Temperature	Mean 355- Minus 9-foot Temperature
0300	13.90	16.60	+2.70
0700	17.8	16.5	-1.3
1100	21.3	19.2	-2.1
1500	21.5	19.6	-1.9
1900	18.0	17.5	-0.5
2500	15.3	16.7	+1.4
Mean	18.0	17.7	-0.3