condition mean min max 4 h after light 2.4 2.4 2.4 8 h after light 4.800000000000001 4.2 5.4 12 h after light 8.75 5.1 12.4 4 h after dark 5.6 5.1 6.1 8 h after dark 3.7 2.6 4.8 12 h after dark 5.45 3.9 7.0