condition mean min max 4 h after light 1.5 1.5 1.5 8 h after light 6.199999999999999 3.7 8.7 12 h after light 9.25 4.1 14.4 4 h after dark 10.35 3.8 16.9 8 h after dark 4.15 2.5 5.8 12 h after dark 2.5999999999999996 2.4 2.8