condition mean min max 0 h after light 22.2957 21.6267 22.9647 4 h after light 30.34905 29.5598 31.1383 8 h after light 34.9312 34.0776 35.7848 4 h after dark 32.2769 28.4711 36.0827 8 h after dark 28.6978 27.5353 29.8603 12 h after dark 20.2648 17.5271 23.0025