condition mean min max 4 h after light 41.9 41.9 41.9 8 h after light 56.15 52.8 59.5 12 h after light 16.6 12.7 20.5 4 h after dark 38.8 37.7 39.9 8 h after dark 25.15 20.2 30.1 12 h after dark 9.4 4.4 14.4