Table 4 - Temperature of dew point in degrees Fahrenheit

[Pressure = 25.00 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
-1 0.0363 -53
0 0.0383 -42 -57
1 0.0403 -34 -44
2 0.0423 -29 -35 -46
3 0.0444 -25 -30 -36 -47
4 0.0467 -22 -26 -30 -37 -49
5 0.0491 -19 -22 -26 -31 -38 -50
6 0.0515 -17 -20 -23 -27 -32 -39 -51                
7 0.0542 -14 -17 -20 -23 -27 -32 -40 -53
8 0.0570 -12 -14 -17 -19 -23 -27 -32 -40 -53
9 0.0600 -10 -12 -14 -17 -19 -23 -27 -32 -40 -54
10 0.0631 -8 -10 -12 -14 -16 -19 -23 -27 -32 -40 -53
11 0.0665 -6 -8 -10 -12 -14 -16 -19 -22 -26 -31 -39 -52      
12 0.0699 -4 -6 -7 -9 -11 -13 -16 -18 -22 26 -30 -38 -50
13 0.0735 -2 -4 -5 -7 -9 -11 -13 -15 -18 -21 -25 -30 -37 -48
14 0.0772 -1 -2 -3 -5 -6 -8 -10 -12 -15 -17 -20 -24 -29 -35 -45
15 0.0810 +1 0 -1 -3 -4 -6 -8 -10 -12 -14 -16 -19 -23 -27 -33
16 0.0850 3 +1 0 -1 -2 -4 -5 -7 -9 -11 -13 -16 -18 -22 -26
17 0.0891 4 3 +2 +1 -1 -2 -3 -5 -6 -8 -10 -12 -15 -17 20
18 0.0933 6 5 4 3 +1 0 -1 -3 -4 -6 -7 -9 -11 -14 -16
19 0.0979 7 6 5 4 3 +2 +1 -1 -2 -3 -5 -7 -8 -10 -13
20 0.1026 9 8 7 6 5 4 3 +1 0 -1 -3 -4 -6 -8 10