Table II.—Relative Humidity, per cent.
| t | Difference between the dry and wet thermometers (t-t′). | t | |||||||||||
| (Dry ther.) | 1°.0 | 2°.0 | 3°.0 | 4°.0 | 5°.0 | 6°.0 | 7°.0 | 8°.0 | 9°.0 | 10°.0 | 11°.0 | 12°.0 | (Dry ther.) |
| 80 | 96 | 92 | 87 | 83 | 79 | 75 | 72 | 68 | 64 | 61 | 57 | 54 | 80 |
| 81 | 96 | 92 | 88 | 84 | 80 | 76 | 72 | 68 | 65 | 61 | 58 | 54 | 81 |
| 82 | 96 | 92 | 88 | 84 | 80 | 76 | 72 | 69 | 65 | 62 | 58 | 55 | 82 |
| 83 | 96 | 92 | 88 | 84 | 80 | 76 | 73 | 69 | 66 | 62 | 59 | 55 | 83 |
| 84 | 96 | 92 | 88 | 84 | 80 | 77 | 73 | 69 | 66 | 63 | 59 | 56 | 84 |
| 85 | 96 | 92 | 88 | 84 | 80 | 77 | 73 | 70 | 66 | 63 | 60 | 56 | 85 |
| 86 | 96 | 92 | 88 | 84 | 81 | 77 | 73 | 70 | 67 | 63 | 60 | 57 | 86 |
| 87 | 96 | 92 | 88 | 84 | 81 | 77 | 74 | 70 | 67 | 64 | 60 | 57 | 87 |
| 88 | 96 | 92 | 88 | 85 | 81 | 77 | 74 | 71 | 67 | 64 | 61 | 58 | 88 |
| 89 | 96 | 92 | 88 | 85 | 81 | 78 | 74 | 71 | 68 | 64 | 61 | 58 | 89 |
| 90 | 96 | 92 | 88 | 85 | 81 | 78 | 75 | 71 | 68 | 65 | 62 | 59 | 90 |
| 91 | 96 | 92 | 89 | 85 | 82 | 78 | 75 | 71 | 68 | 65 | 62 | 59 | 91 |
| 92 | 96 | 92 | 89 | 85 | 82 | 78 | 75 | 72 | 69 | 65 | 62 | 59 | 92 |
| 93 | 96 | 93 | 89 | 85 | 82 | 78 | 75 | 72 | 69 | 66 | 63 | 60 | 93 |
| 94 | 96 | 93 | 89 | 86 | 82 | 79 | 75 | 72 | 69 | 66 | 63 | 60 | 94 |
| 95 | 96 | 93 | 89 | 86 | 82 | 79 | 76 | 72 | 69 | 66 | 63 | 60 | 95 |
| 96 | 96 | 93 | 89 | 86 | 82 | 79 | 76 | 73 | 70 | 67 | 64 | 61 | 96 |
| 97 | 96 | 93 | 89 | 86 | 82 | 79 | 76 | 73 | 70 | 67 | 64 | 61 | 97 |
| 98 | 96 | 93 | 89 | 86 | 83 | 79 | 76 | 73 | 70 | 67 | 64 | 61 | 98 |
| 99 | 96 | 93 | 89 | 86 | 83 | 80 | 76 | 73 | 70 | 68 | 65 | 62 | 99 |
| 100 | 97 | 93 | 90 | 86 | 83 | 80 | 77 | 74 | 71 | 68 | 65 | 62 | 100 |
| 101 | 97 | 93 | 90 | 86 | 83 | 80 | 77 | 74 | 71 | 68 | 65 | 62 | 101 |
| 102 | 97 | 93 | 90 | 86 | 83 | 80 | 77 | 74 | 71 | 68 | 65 | 63 | 102 |
| 103 | 97 | 93 | 90 | 87 | 83 | 80 | 77 | 74 | 71 | 69 | 66 | 63 | 103 |
| 104 | 97 | 93 | 90 | 87 | 83 | 80 | 77 | 74 | 72 | 69 | 66 | 63 | 104 |
| 105 | 97 | 93 | 90 | 87 | 84 | 81 | 78 | 75 | 72 | 69 | 66 | 64 | 105 |
| 106 | 97 | 93 | 90 | 87 | 84 | 81 | 78 | 75 | 72 | 69 | 66 | 64 | 106 |
| 107 | 97 | 93 | 90 | 87 | 84 | 81 | 78 | 75 | 72 | 69 | 67 | 64 | 107 |
| 108 | 97 | 93 | 90 | 87 | 84 | 81 | 78 | 75 | 72 | 70 | 67 | 64 | 108 |
| 109 | 97 | 93 | 90 | 87 | 84 | 81 | 78 | 75 | 73 | 70 | 67 | 65 | 109 |
| 110 | 97 | 94 | 90 | 87 | 84 | 81 | 78 | 76 | 73 | 70 | 67 | 65 | 110 |
| t. | 1°.0 | 2°.0 | 3°.0 | 4°.0 | 5°.0 | 6°.0 | 7°.0 | 8°.0 | 9°.0 | 10°.0 | 11°.0 | 12°.0 | t. |
Table II.—Relative Humidity, per cent.
| t | Difference between the dry and wet thermometers (t-t′). | t | ||||||||||||
| (Dry ther.) | 12°.0 | 13°.0 | 14°.0 | 15°.0 | 16°.0 | 17°.0 | 18°.0 | 19°.0 | 20°.0 | 21°.0 | 22°.0 | 23°.0 | 24°.0 | (Dry ther.) |
| 80 | 54 | 51 | 47 | 44 | 41 | 38 | 35 | 32 | 29 | 26 | 23 | 20 | 18 | 80 |
| 81 | 54 | 51 | 48 | 44 | 41 | 38 | 35 | 33 | 30 | 27 | 24 | 21 | 19 | 81 |
| 82 | 55 | 52 | 48 | 45 | 42 | 39 | 36 | 33 | 31 | 28 | 25 | 22 | 20 | 82 |
| 83 | 55 | 52 | 49 | 46 | 43 | 40 | 37 | 34 | 31 | 29 | 26 | 23 | 21 | 83 |
| 84 | 56 | 53 | 49 | 46 | 44 | 41 | 38 | 35 | 32 | 29 | 27 | 24 | 22 | 84 |
| 85 | 56 | 53 | 50 | 47 | 44 | 41 | 38 | 36 | 33 | 30 | 28 | 25 | 22 | 85 |
| 86 | 57 | 54 | 51 | 48 | 45 | 42 | 39 | 36 | 34 | 31 | 29 | 26 | 23 | 86 |
| 87 | 57 | 54 | 51 | 48 | 45 | 42 | 40 | 37 | 34 | 32 | 30 | 27 | 24 | 87 |
| 88 | 58 | 55 | 52 | 49 | 46 | 43 | 40 | 38 | 35 | 32 | 30 | 27 | 25 | 88 |
| 89 | 58 | 55 | 52 | 49 | 46 | 44 | 41 | 38 | 36 | 33 | 31 | 28 | 26 | 89 |
| 90 | 59 | 56 | 53 | 50 | 47 | 44 | 41 | 39 | 36 | 34 | 32 | 29 | 26 | 90 |
| 91 | 59 | 56 | 53 | 50 | 47 | 45 | 42 | 39 | 37 | 35 | 33 | 30 | 27 | 91 |
| 92 | 59 | 56 | 54 | 51 | 48 | 45 | 43 | 40 | 37 | 35 | 33 | 30 | 28 | 92 |
| 93 | 60 | 57 | 54 | 51 | 48 | 46 | 43 | 41 | 38 | 36 | 34 | 31 | 29 | 93 |
| 94 | 60 | 57 | 54 | 52 | 49 | 46 | 44 | 41 | 39 | 36 | 34 | 31 | 29 | 94 |
| 95 | 60 | 58 | 55 | 52 | 49 | 47 | 44 | 42 | 39 | 37 | 35 | 32 | 30 | 95 |
| 96 | 61 | 58 | 55 | 53 | 50 | 47 | 45 | 42 | 40 | 37 | 36 | 33 | 30 | 96 |
| 97 | 61 | 58 | 56 | 53 | 50 | 48 | 45 | 43 | 40 | 38 | 36 | 33 | 31 | 97 |
| 98 | 61 | 59 | 56 | 53 | 51 | 48 | 46 | 43 | 41 | 38 | 37 | 34 | 32 | 98 |
| 99 | 62 | 59 | 56 | 54 | 51 | 49 | 46 | 44 | 41 | 39 | 37 | 34 | 32 | 99 |
| 100 | 62 | 59 | 57 | 54 | 51 | 49 | 47 | 44 | 42 | 39 | 37 | 35 | 33 | 100 |
| 101 | 62 | 60 | 57 | 54 | 52 | 49 | 47 | 45 | 42 | 40 | 38 | 36 | 33 | 101 |
| 102 | 63 | 60 | 57 | 55 | 52 | 50 | 47 | 45 | 43 | 40 | 38 | 36 | 34 | 102 |
| 103 | 63 | 60 | 58 | 55 | 53 | 50 | 48 | 45 | 43 | 41 | 39 | 37 | 34 | 103 |
| 104 | 63 | 61 | 58 | 55 | 53 | 51 | 48 | 46 | 44 | 41 | 39 | 37 | 35 | 104 |
| 105 | 64 | 61 | 58 | 56 | 53 | 51 | 49 | 46 | 44 | 42 | 40 | 38 | 35 | 105 |
| 106 | 64 | 61 | 59 | 56 | 54 | 51 | 49 | 47 | 44 | 42 | 40 | 38 | 36 | 106 |
| 107 | 64 | 62 | 59 | 57 | 54 | 52 | 49 | 47 | 45 | 43 | 41 | 38 | 36 | 107 |
| 108 | 64 | 62 | 59 | 57 | 54 | 52 | 50 | 47 | 45 | 43 | 41 | 39 | 37 | 108 |
| 109 | 65 | 62 | 60 | 57 | 55 | 52 | 50 | 48 | 46 | 44 | 41 | 39 | 37 | 109 |
| 110 | 65 | 62 | 60 | 57 | 55 | 53 | 50 | 48 | 46 | 44 | 42 | 40 | 38 | 110 |
| t. | 12°.0 | 13°.0 | 14°.0 | 15°.0 | 16°.0 | 17°.0 | 18°.0 | 19°.0 | 20°.0 | 21°.0 | 22°.0 | 23°.0 | 24°.0 | t. |
Table II.—Relative Humidity, per cent.
| t | Difference between the dry and wet thermometers (t-t′). | t | ||||||||||||
| (Dry ther.) | 24°.0 | 25°.0 | 26°.0 | 27°.0 | 28°.0 | 29°.0 | 30°.0 | 31°.0 | 32°.0 | 33°.0 | 34°.0 | 35°.0 | 36°.0 | (Dry ther.) |
| 80 | 18 | 15 | 13 | 10 | 8 | 6 | 3 | 1 | 80 | |||||
| 81 | 19 | 16 | 14 | 11 | 9 | 7 | 4 | 2 | 81 | |||||
| 82 | 20 | 17 | 15 | 12 | 10 | 8 | 5 | 3 | 1 | 82 | ||||
| 83 | 21 | 18 | 16 | 13 | 11 | 9 | 6 | 4 | 2 | 83 | ||||
| 84 | 22 | 19 | 17 | 14 | 12 | 10 | 8 | 5 | 3 | 1 | 84 | |||
| 85 | 22 | 20 | 17 | 15 | 13 | 11 | 9 | 6 | 4 | 2 | 85 | |||
| 86 | 23 | 21 | 18 | 16 | 14 | 12 | 10 | 7 | 5 | 3 | 1 | 86 | ||
| 87 | 24 | 22 | 19 | 17 | 15 | 13 | 11 | 8 | 6 | 4 | 2 | 87 | ||
| 88 | 25 | 22 | 20 | 18 | 16 | 14 | 12 | 9 | 7 | 5 | 3 | 1 | 88 | |
| 89 | 26 | 23 | 21 | 19 | 16 | 14 | 12 | 10 | 8 | 6 | 4 | 2 | 1 | 89 |
| 90 | 26 | 24 | 22 | 20 | 17 | 15 | 13 | 11 | 9 | 7 | 5 | 3 | 2 | 90 |
| 91 | 27 | 25 | 23 | 20 | 18 | 16 | 14 | 12 | 10 | 8 | 6 | 4 | 3 | 91 |
| 92 | 28 | 26 | 23 | 21 | 19 | 17 | 15 | 13 | 11 | 9 | 7 | 5 | 3 | 92 |
| 93 | 29 | 26 | 24 | 22 | 20 | 18 | 16 | 14 | 12 | 10 | 8 | 6 | 4 | 93 |
| 94 | 29 | 27 | 25 | 23 | 21 | 18 | 16 | 14 | 13 | 11 | 9 | 7 | 5 | 94 |
| 95 | 30 | 28 | 25 | 23 | 21 | 19 | 17 | 15 | 13 | 11 | 10 | 8 | 6 | 95 |
| 96 | 30 | 28 | 26 | 24 | 22 | 20 | 18 | 16 | 14 | 12 | 10 | 9 | 7 | 96 |
| 97 | 31 | 29 | 27 | 25 | 23 | 21 | 19 | 17 | 15 | 13 | 11 | 10 | 8 | 97 |
| 98 | 32 | 29 | 27 | 25 | 23 | 21 | 19 | 18 | 16 | 14 | 12 | 10 | 9 | 98 |
| 99 | 32 | 30 | 28 | 26 | 24 | 22 | 20 | 18 | 16 | 15 | 13 | 11 | 10 | 99 |
| 100 | 33 | 31 | 29 | 27 | 25 | 23 | 21 | 19 | 17 | 15 | 14 | 12 | 10 | 100 |
| 101 | 33 | 31 | 29 | 27 | 25 | 23 | 21 | 20 | 18 | 16 | 14 | 13 | 11 | 101 |
| 102 | 34 | 32 | 30 | 28 | 26 | 24 | 22 | 20 | 19 | 17 | 15 | 13 | 12 | 102 |
| 103 | 34 | 32 | 30 | 28 | 26 | 25 | 23 | 21 | 19 | 17 | 16 | 14 | 12 | 103 |
| 104 | 35 | 33 | 31 | 29 | 27 | 25 | 23 | 22 | 20 | 18 | 16 | 15 | 13 | 104 |
| 105 | 35 | 33 | 31 | 30 | 28 | 26 | 24 | 22 | 20 | 19 | 17 | 15 | 14 | 105 |
| 106 | 36 | 34 | 32 | 30 | 28 | 26 | 25 | 23 | 21 | 19 | 18 | 16 | 14 | 106 |
| 107 | 36 | 34 | 32 | 31 | 29 | 27 | 25 | 23 | 22 | 20 | 18 | 17 | 15 | 107 |
| 108 | 37 | 35 | 33 | 31 | 29 | 27 | 26 | 24 | 22 | 21 | 19 | 17 | 16 | 108 |
| 109 | 37 | 35 | 33 | 32 | 30 | 28 | 26 | 25 | 23 | 21 | 20 | 18 | 16 | 109 |
| 110 | 38 | 36 | 34 | 32 | 30 | 28 | 27 | 25 | 23 | 22 | 20 | 19 | 17 | 110 |
| t. | 24°.0 | 25°.0 | 26°.0 | 27°.0 | 28°.0 | 29°.0 | 30°.0 | 31°.0 | 32°.0 | 33°.0 | 34°.0 | 35°.0 | 36°.0 | t. |
Table II.—Relative Humidity, per cent.
| t | Difference between the dry and wet thermometers (t-t′). | t | |||||||||||
| (Dry ther.) | 36°.0 | 37°.0 | 38°.0 | 39°.0 | 40°.0 | 41°.0 | 42°.0 | 43°.0 | 44°.0 | 45°.0 | 46°.0 | 48°.0 | (Dry ther.) |
| 89 | 1 | 89 | |||||||||||
| 90 | 2 | 90 | |||||||||||
| 91 | 3 | 1 | 91 | ||||||||||
| 92 | 3 | 2 | 1 | 92 | |||||||||
| 93 | 4 | 3 | 2 | 93 | |||||||||
| 94 | 5 | 4 | 3 | 0 | 94 | ||||||||
| 95 | 6 | 5 | 4 | 1 | 95 | ||||||||
| 96 | 7 | 5 | 5 | 2 | 1 | 96 | |||||||
| 97 | 8 | 6 | 6 | 3 | 1 | 97 | |||||||
| 98 | 9 | 7 | 7 | 4 | 2 | 1 | 98 | ||||||
| 99 | 10 | 8 | 7 | 5 | 3 | 2 | 0 | 99 | |||||
| 100 | 10 | 9 | 8 | 6 | 4 | 3 | 1 | 100 | |||||
| 101 | 11 | 9 | 9 | 6 | 5 | 3 | 2 | 0 | 101 | ||||
| 102 | 12 | 10 | 9 | 7 | 6 | 4 | 3 | 1 | 102 | ||||
| 103 | 12 | 11 | 9 | 8 | 6 | 5 | 4 | 2 | 1 | 103 | |||
| 104 | 13 | 12 | 10 | 8 | 7 | 6 | 5 | 3 | 2 | 104 | |||
| 105 | 14 | 12 | 11 | 9 | 8 | 6 | 5 | 4 | 2 | 1 | 105 | ||
| 106 | 14 | 13 | 11 | 10 | 8 | 7 | 6 | 4 | 3 | 2 | 0 | 106 | |
| 107 | 15 | 14 | 12 | 11 | 9 | 8 | 6 | 5 | 4 | 3 | 1 | 107 | |
| 108 | 16 | 14 | 13 | 11 | 10 | 9 | 7 | 6 | 5 | 3 | 2 | 108 | |
| 109 | 16 | 15 | 13 | 12 | 10 | 9 | 8 | 7 | 5 | 4 | 3 | 109 | |
| 110 | 17 | 15 | 14 | 13 | 11 | 10 | 8 | 7 | 6 | 5 | 3 | 1 | 110 |
| t. | 36°.0 | 37°.0 | 38°.0 | 39°.0 | 40°.0 | 41°.0 | 42°.0 | 43°.0 | 44°.0 | 45°.0 | 46°.0 | 48°.0 | t. |