Research Article
Human Bioclimatic Conditions, Trends, and Variability in the Athens University Campus, Greece
Table 1
Physiologically Equivalent Temperature (PET) for different grades of thermal sensation and physiological stress on human beings [
42].
| PET (°C) | Thermal sensation | Physiological stress level |
| <4 | Very cold | Extreme cold stress
| 4–8 | Cold | Strong cold stress | 8–13 | Cool | Moderate cold stress | 13–18 | Slightly cool | Slight cold stress | 18–23 | Comfortable | No thermal stress | 23–29 | Slightly warm | Slight heat stress | 29–35 | Warm | Moderate heat stress | 35–41 | Hot | Strong heat stress | >41 | Very hot | Extreme heat stress |
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