condition mean min max 4 h after light 1.7 1.7 1.7 8 h after light 3.3499999999999996 1.6 5.1 12 h after light 1.65 1.5 1.8 4 h after dark 5.35 2.6 8.1 8 h after dark 5.1 4.9 5.3 12 h after dark 1.9500000000000002 1.8 2.1