Table 2 - Temperature of dew point in degrees Fahrenheit

[Pressure = 29.00 inches]

Air
Temp
t

Vapor
Press.
e

Depression of wet-bulb thermometer (t-t')
24.5 25.0 25.5 26.0 26.5 27.0 27.5 28.0 28.5 29.0 29.5 30.0 30.5 31.0 31.5
67 0.661 -26
68 0.684 -12 -26
69 0.707 -4 -13 -27
70 0.732 +1 -4 -12 -27
71 0.757 6 +2 -4 -12 -26                    
72 0.783 10 7 +2 -4 -12 -26
73 0.810 14 11 7 +2 -4 -12 -26
74 0.838 17 14 11 7 +2 -3 -12 -25
75 0.866 20 17 14 11 7 +3 -3 -11 -25
76 0.896 23 20 18 15 11 8 +3 -3 -10 -24          
77 0.926 25 23 20 18 15 12 8 +3 -2 -10 -22
78 0.957 27 25 23 21 18 15 12 8 +4 -2 -9 -21
79 0.989 29 28 26 24 21 18 16 13 9 +4 -1 -9 -20
80 1.022 31 30 28 26 24 22 19 16 13 9 +5 -1 -8 -19 -54