condition mean min max 4 h after light 1.2 1.2 1.2 8 h after light 16.049999999999997 8.2 23.9 12 h after light 8.5 1.3 15.7 4 h after dark 2.8 1.4 4.2 8 h after dark 3.45 3.4 3.5 12 h after dark 2.05 1.6 2.5