condition mean min max 4 h after light 2.1 2.1 2.1 8 h after light 3.4000000000000004 2.6 4.2 12 h after light 3.65 3.5 3.8 4 h after dark 3.5999999999999996 3.1 4.1 8 h after dark 7.0 3.2 10.8 12 h after dark 3.05 1.9 4.2