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')
0.1 0.2 0.3 0.4 0.5
-50 0.0021 -60
-49 0.0022 -58
-48 0.0024 -56
-47 0.0026 -55
-46 0.0027 -53        
-45 0.0029 -51
-44 0.0031 -50 -59
-43 0.0033 -49 -57
-42 0.0035 -48 -55
-41 0.0037 -46 -53      
-40 0.0039 -45 -51
-39 0.0041 -44 -50 -60
-38 0.0044 -43 -49 -58
-37 0.0046 -42 -47 -55
-36 0.0048 -41 -46 -53    
-35 0.0051 -40 -44 -51
-34 0.0054 -38 -43 -49 -58
-33 0.0057 -37 -41 -47 -55
-32 0.0061 -35 -40 -45 -52
-31 0.0065 -34 -38 -43 -49 -58
-30 0.0069 -33 -36 -41 -47 -54