TABLE 1 



Mean Hoiirly Temperatures and Standard Deviations (® F) 



four (Z) 



Surface 



20 ft 



4o ft 



60 ft 



80 ft 



100 ft 



No. of dbe 



0000 



77.62 



77.60 



77.51 



77.41 



77.33 



77.19 



41 





.63 



.73 



.75 



.82 



.86 



.94 





0100 



77.51 



77.^5 



77.^0 



77.32 



77.24 



77.17 



49 





.61 



.61 



.65 



.72 



.80 



.85 





0200 



77.36 



77.36 



77.31 



77.25 



77.19 



77.02 



48 





.61 



.62 



.65 



.67 



.72 



.76 





0300 



77.18 



77.18 



77.14 



77.07 



77.01 



76.85 



40 





.63 



.65 



.67 



.70 



.Ih 



.77 





OiKX) 



77.21 



77.22 



77.19 



77.15 



77.08 



76.98 



37 





.63 



.63 



.63 



.65 



.69 



.72 





0500 



77.31 



77.31 



77.31 



77.28 



77.23 



77.09 



38 





.69 



.69 



.68 



.71 



.73 



.85 





0600 



77.27 



77.29 



77.28 



77.22 



77.12 



76.93 



36 





.66 



.65 



.67 



.67 



.76 



.91 





0700 



77.06 



77.07 



77.07 



77.03 



76.95 



76.87 



32 





.50 



.51 



.51 



.52 



.56 



.61 





0800 



76.97 



76.99 



77.01 



76.92 



76.86 



76.73 



32 





.62 



.61 



.62 



.65 



.65 



.67 





0900 



76.97 



76.99 



76.97 



76.93 



76.88 



76.76 



36 





.62 



.61 



.60 



.59 



.57 



,66 





1000 



77.16 



77.19 



77.21 



77.17 



77.06 



76.89 



35 





.70 



.72 



.72 



.73 



.80 



.89 





1100 



77.27 



77.28 



77.29 



77.28 



77.1^ 



76.97 



37 





.73 



.72 



.73 



.75 



.85 



1.01 





1200 



77.17 



77.17 



77.15 



77.U 



77.02 



76.87 



36 





.72 



.73 



.75 



.78 



.85 



.95 





1300 



TT'^l 



77.35 



77.33 



77.26 



77.18 



77.10 



49 





.73 



.76 



.77 



.81 



.89 



.97 





itoo 



VM 



77.^ 



77.37 



77.28 



77.18 



77.06 



h9 





.62 



.64 



.64 



.69 



.75 



.84 





1500 



77.6U 



77.59 



77.46 



77.34 



77.23 



77.07 



48 





.62 



.63 



.62 



.67 



.76 



.87 





1600 



77.86 



77.74 



77.58 



77.49 



77.37 



77.29 



30 





.56 



.51 



.50 



.56 



.65 



.75 





1700 



77.99 



77.88 



77.75 



77.59 



77.^** 



77.32 



27 





.62 



.58 



.59 



.64 



.78 



.84 





1800 



77.76 



77.58 



77.38 



77.27 



77.14 



76.96 



31 





.7^ 



.69 



.70 



.72 



.77 



.84 





1900 



77.76 



77.63 



77.42 



77.30 



77.20 



77.05 



32 





.63 



.59 



.66 



.71 



.79 



.89 





2000 



77.67 



77.54 



77.38 



77.18 



77.07 



77.00 



35 





.71 



.69 



.70 



.81 



.84 



.86 





2100 



77.65 



77.5^ 



77.36 



77.17 



77.06 



76.93 



34 





.78 



.7*^ 



.71 



.79 



.85 



.91 





2200 



77.52 



77.45 



77.30 



77.15 



77.04 



76.91 



32 





.80 



.80 



.75 



.76 



.79 



.86 





2300 



77.62 



77.52 



77.40 



77.25 



77.09 



76.92 



32 





.83 



.77 



.75 



.76 



.73 



.78 

 Total 



896 



