condition mean min max 4 h after light 1.8 1.8 1.8 8 h after light 3.25 1.4 5.1 12 h after light 3.0999999999999996 2.4 3.8 4 h after dark 16.65 1.3 32.0 8 h after dark 14.5 2.9 26.1 12 h after dark 3.8 3.5 4.1