Extended Data Fig. 1: Minute-by-minute measurements of heat index for construction workers in Taiwan stratified by the job workload: Light (N = 44), Medium (N = 18), and Heavy (N = 39).
From: Heat stress and productivity losses in urban construction workforces
The heat index was classified according to the National Weather Service as: ‘Caution’ (27–32 °C), where fatigue may occur with prolonged exposure; ‘Extreme Caution’ (33–40 °C), where heat cramps, exhaustion, or heat stroke become possible; ‘Danger’ (41–51 °C), where heat exhaustion is likely and heat stroke is possible; and ‘Extreme Danger’ ( ≥ 52 °C), where heat stroke is highly likely. We used the Barcelona Institute for Global Health color-coding system to visually represent these classifications: green (safe), yellow (caution), orange (extreme caution), red (danger), purple (extreme danger), and black (beyond human threshold). Conditions of construction workers were pooled across all shifts.
