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')

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
2 0.0423 -47
3 0.0444 -37 -50
4 0.0467 -31 -40 -55
5 0.0491 -27 -32 -42 -59
6 0.0515 -23 -28 -34 -44                      
7 0.0542 -20 -24 -28 -35 -47
8 0.0570 -17 -20 -24 -29 -36 -49
9 0.0600 -14 -17 -20 -24 -29 -37 -50
10 0.0631 -12 -14 -17 -20 -25 -30 -37 -52
11 0.0665 -9 -12 -14 -17 -20 -25 -30 -38 -53            
12 0.0699 -7 -9 -11 -14 -17 -20 -24 -30 -38 -52
13 0.0735 -5 -7 -9 -11 -14 -17 -20 -24 -29 -37 -51
14 0.0772 -3 -5 -7 -9 -11 -13 -16 -19 -24 -29 -36 -49
15 0.0810 -1 -3 -4 -6 -8 -10 -13 -16 -19 -23 -28 -35 -48
16 0.0850 0 -1 -2 -4 -6 -8 -10 -12 -15 -18 -22 -27 -33 -45  
17 0.0891 +2 +1 0 -2 -4 -5 -7 -9 -12 -14 -17 -21 -26 -32 -42
18 0.0933 4 3 +1 0 -2 -3 -5 -7 -9 -11 -14 -17 -20 -24 -30
19 0.0979 6 4 3 +2 0 -1 -3 -4 -6 -8 -10 -13 -16 -19 -23
20 0.1026 7 6 5 4 +1 +1 -1 -2 -4 -5 -7 -10 -12 -15 -18