condition mean min max 4 h after light 15.9 15.9 15.9 8 h after light 26.5 12.3 40.7 12 h after light 33.05 25.5 40.6 4 h after dark 21.55 15.6 27.5 8 h after dark 32.1 30.2 34.0 12 h after dark 40.8 16.0 65.6