condition mean min max 4 h after light 41.6 41.6 41.6 8 h after light 38.8 28.1 49.5 12 h after light 38.3 19.4 57.2 4 h after dark 39.85 33.5 46.2 8 h after dark 46.45 36.8 56.1 12 h after dark 50.5 30.7 70.3