Table 3 - Temperature of dew point in degrees Fahrenheit

[Pressure = 27.00 inches]

Air
Temp
t

Vapor
Press.
e

Depression of wet-bulb thermometer (t-t')
8.5 9.0 9.5 10.0 10.5 11.0 11.5 12.0 12.5 13.0 13.5 14.0 14.5 15.0 15.5 16.0
25 0.130 -41
26 0.136 -28
27 0.143 -20 -36
28 0.150 -15 -25 -48
29 0.157 -11 -18 -30                          
30 0.164 -7 -13 -21 -39
31 0.172 -3 -8 -15 -25 -52
32 0.180 0 -4 -10 -18 -30
33 0.187 +3 -1 -6 -12 -20 -36
34 0.195 5 +2 -2 -7 -14 -24 -47                  
35 0.203 8 4 +1 -3 -9 -16 -28
36 0.211 10 7 4 0 -5 -10 -18 -33
37 0.219 12 9 6 +3 -1 -6 -12 -21 -41
38 0.228 14 11 9 6 +2 -2 -7 -14 -24 -51
39 0.237 16 13 11 8 5 +1 -3 -8 -16 -27            
40 0.247 18 15 13 11 8 5 +1 -4 -10 -17 -32
41 0.256 19 17 15 13 10 7 4 0 -5 -11 -29 -36
42 0.266 21 19 17 15 13 10 7 +3 -1 -6 -12 -22 -44
43 0.277 22 21 19 17 15 12 10 7 +3 -1 -6 -14 -24 -55
44 0.287 24 22 20 18 16 14 12 9 6 +2 -2 -7 -15 -27    
45 0.298 25 24 22 20 18 16 14 11 9 6 +2 -3 -8 -16 -30
46 0.310 26 25 23 22 20 18 16 13 11 8 5 +1 -3 -9 -18 -33
47 0.322 28 26 25 23 22 20 18 15 13 11 8 5 +1 -4 -10 -19
48 0.334 29 28 26 25 23 21 20 17 15 13 10 8 4 0 -5 -11
49 0.347 30 29 28 26 25 23 21 19 17 15 13 10 7 +4 -1 -5