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')

3.2 3.4 3.6 3.8 4.0 4.2 4.4 4.6 4.8 5.0 5.2 5.4 5.6 5.8 6.0 6.2 6.4 6.6 6.8 7.0
0 0.0383 -58
1 0.0403 -44
2 0.0423 -36 -47
3 0.0444 -30 -37 -50
4 0.0467 -26 -31 -39 -52
5 0.0491 -23 -27 -32 -40 -56
6 0.0515 -20 -23 -27 -33 -42 -60                            
7 0.0542 -17 -20 -23 -28 -34 -44
8 0.0570 -14 -17 -20 -24 -28 -37 -45
9 0.0600 -12 -14 -17 -20 -24 -29 -34 -45
10 0.0631 -10 -12 -14 -17 -20 -24 -28 -35 -46
11 0.0665 -8 -10 -12 -14 -17 -20 -24 -28 -35 -46                    
12 0.0699 -6 -7 -9 -11 -14 -16 -19 -23 -28 -34 -45
13 0.0735 -4 -5 -7 -9 -11 -13 -16 -19 -23 -27 -33 -44
14 0.0772 -2 -3 -5 -7 -9 -11 -13 -16 -18 -22 -26 -32 -42 -60
15 0.0810 0 -2 -3 -5 -6 -8 -10 -12 -15 -18 -21 -26 -31 -40 -57
16 0.0850 +2 0 -1 -3 -4 -6 -7 -9 -12 -14 -17 -20 -24 -30 -38 -51        
17 0.0891 3 +2 +1 -1 -2 -3 -5 -7 -9 -11 -13 -16 -19 -23 -28 -35 -48
18 0.0933 5 4 3 +1 0 -1 -3 -4 -6 -8 -10 -13 -15 -18 -22 -27 -32 -43
19 0.0979 6 5 4 3 +2 0 -1 -2 -4 -6 -7 -9 -12 -14 -17 -21 -25 -30 -39 -56
20 0.1026 8 7 6 5 4 +2 +1 0 -2 -3 -5 -7 -9 -11 -13 -16 -19 -23 -29 -36