N | Thermo-Hydrometric Discomfort Index Class | DI/˚C |
1 | No discomfort | >21 |
2 | Under 50% of the population feels discomfort | 21 - 24 |
3 | Over 50% of the population feels discomfort | 24 - 27 |
4 | Most of the population feels discomfort | 27 - 29 |
5 | Everyone feels stress | 30 - 32 |
6 | State of medical emergency | >32 |