Trial 1 Trial 2 Trial 3
Wet bulb temperature (°F) 62.8 60.0 61.0
Dry bulb temperature (°F) 64.5 64.4 64.3
Question 4
Find the difference of the average wet bulb and dry bulb temperatures. Round the value to the nearest whole number. Use this value and the average dry bulb temperature in Celsius (round up or down to the nearest temperature) to determine the relative humidity using this chart.
Relative Humidity (%)
Dry Bulb Temperature (°C) Difference of Wet Bulb and Dry Bulb Temperatures (°C)
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
-20 100 28
-18 100 40
-16 100 48
-14 100 55 11
-12 100 61 23
-10 100 66 33
-8 100 71 41 13
-6 100 73 48 20
-4 100 77 54 32 11
-2 100 79 58 37 20 1
0 100 81 63 45 28 11
2 100 83 67 51 36 20 6
4 100 85 70 56 42 27 14
6 100 86 72 59 46 35 22 10
8 100 87 74 62 51 39 28 17 6
10 100 88 76 65 54 43 33 24 13 4
12 100 88 78 67 57 48 38 28 19 10 2
14 100 89 79 69 60 50 41 33 25 16 8 1
16 100 90 80 71 62 54 45 37 29 21 14 7 1
18 100 91 81 72 64 56 48 40 33 26 19 12 6
20 100 91 82 74 66 58 51 44 36 30 23 17 11 5
22 100 92 83 75 68 60 53 46 40 33 27 21 15 10 4
24 100 92 84 76 69 62 55 49 42 36 30 25 20 14 9 4
26 100 92 85 77 70 64 57 51 45 39 34 28 23 18 13 9
28 100 93 86 78 71 65 59 53 47 42 36 31 26 21 17 12
30 100 93 86 79 72 66 61 55 49 44 39 34 29 25 20 16
