condition mean min max 4 h after light 158.0 158.0 158.0 8 h after light 142.2 126.1 158.3 12 h after light 143.6 103.5 183.7 4 h after dark 190.2 123.7 256.7 8 h after dark 226.0 216.3 235.7 12 h after dark 170.6 137.2 204.0