condition mean min max 4 h after light 38.5 38.5 38.5 8 h after light 21.55 14.0 29.1 12 h after light 31.9 26.5 37.3 4 h after dark 47.3 35.0 59.6 8 h after dark 51.25 46.9 55.6 12 h after dark 45.3 40.8 49.8