condition mean min max 4 h after light 5.4 5.4 5.4 8 h after light 7.75 6.8 8.7 12 h after light 7.5 2.7 12.3 4 h after dark 25.049999999999997 18.2 31.9 8 h after dark 15.200000000000001 5.3 25.1 12 h after dark 26.700000000000003 24.1 29.3