condition mean min max 4 h after light 2.4 2.4 2.4 8 h after light 4.6 1.0 8.2 12 h after light 3.25 3.2 3.3 4 h after dark 12.0 2.8 21.2 8 h after dark 4.949999999999999 1.2 8.7 12 h after dark 3.15 1.0 5.3