condition mean min max 4 h after light 0.7 0.7 0.7 8 h after light 2.1 2.0 2.2 12 h after light 1.2000000000000002 0.2 2.2 4 h after dark 1.35 0.5 2.2 8 h after dark 0.95 0.7 1.2 12 h after dark 4.949999999999999 4.1 5.8