condition mean min max 4 h after light 4.2 4.2 4.2 8 h after light 4.25 3.1 5.4 12 h after light 5.6 3.9 7.3 4 h after dark 7.050000000000001 3.3 10.8 8 h after dark 7.75 5.2 10.3 12 h after dark 22.5 9.0 36.0