| Temperature | Relative Humidity (%) | |||||||||||
| °C | °F | 100 | 90 | 80 | 70 | 60 | 50 | 40 | 30 | 20 | 10 | 5 |
| 15 | 59 | 17.5 | 17.0 | 16.5 | 16.0 | 15.5 | 15 | 14.5 | 14 | 13.5 | 12.9 | 12.7 |
| 18 | 64 | 20.2 | 19.6 | 19.0 | 18.4 | 17.8 | 17.2 | 16.6 | 16.0 | 15.4 | 14.8 | 14.5 |
| 20 | 68 | 22.2 | 21.5 | 20.8 | 20.1 | 19.4 | 18.7 | 18.0 | 17.4 | 16.7 | 16.0 | 15.6 |
| 22 | 72 | 24.2 | 23.4 | 22.6 | 21.9 | 21.1 | 20.3 | 19.5 | 18.7 | 18.0 | 17.2 | 16.8 |
| 25 | 77 | 27.5 | 26.5 | 25.6 | 24.7 | 23.7 | 22.8 | 21.9 | 20.9 | 20.0 | 19.1 | 18.6 |
| 28 | 82 | 31.0 | 29.9 | 28.7 | 27.6 | 26.5 | 25.4 | 24.3 | 23.2 | 22.0 | 20.9 | 20.4 |
| 30 | 86 | 33.5 | 32.2 | 31.0 | 29.7 | 28.5 | 27.2 | 26.0 | 24.7 | 23.5 | 22.2 | 21.6 |
| 32 | 90 | 36.1 | 34.7 | 33.3 | 31.9 | 30.5 | 29.1 | 27.7 | 26.3 | 24.9 | 23.5 | 22.8 |
| 35 | 95 | 40.4 | 38.7 | 37.1 | 35.4 | 33.7 | 32.1 | 30.4 | 28.8 | 27.1 | 25.4 | 24.8 |
| 38 | 100 | 45.1 | 43.1 | 41.1 | 39.2 | 37.2 | 35.3 | 33.3 | 31.4 | 29.4 | 27.4 | 26.5 |
| 40 | 104 | 48.4 | 46.2 | 44.4 | 41.9 | 39.7 | 37.5 | 35.3 | 33.2 | 31.0 | 28.8 | 27.7 |
| Low Risk | Medium Risk | High Risk | Very High Risk |
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