condition mean min max 4 h after light 0.7 0.7 0.7 8 h after light 2.05 1.2 2.9 12 h after light 3.6500000000000004 2.6 4.7 4 h after dark 1.25 0.8 1.7 8 h after dark 1.9 0.7 3.1 12 h after dark 0.6499999999999999 0.6 0.7