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preface to fifteenth edition

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PRACTICAL LABORATORY INFORMATION 11.9<br />

TABLE 11.7<br />

Relative Humidity from Dew Point Readings<br />

Dew point reading, C<br />

Depression of<br />

dew point,<br />

C<br />

10 0 10 20 30<br />

Relative humidity, %<br />

0.5 96 96 96 96 97<br />

1.0 92 93 94 94 94<br />

1.5 89 89 90 91 92<br />

2.0 86 87 88 88 89<br />

3.0 79 81 82 83 84<br />

4.0 73 75 77 78 80<br />

5.0 68 70 72 74 75<br />

6.0 63 66 68 70 71<br />

7.0 59 61 63 66 68<br />

8.0 54 57 60 62 64<br />

9.0 51 53 56 58 61<br />

10.0 47 50 53 55 57<br />

11.0 44 47 49 52<br />

12.0 41 44 47 49<br />

13.0 38 41 44 46<br />

14.0 35 38 41 44<br />

15.0 33 36 39 42<br />

16.0 31 34 37 39<br />

18.0 27 30 33 35<br />

20.0 24 26 29 32<br />

22.0 21 23 26<br />

24.0 18 21 23<br />

26.0 16 18 21<br />

28.0 14 16 19<br />

30.0 12 14 17

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