condition mean min max 4 h after light 5.8 5.8 5.8 8 h after light 14.950000000000001 3.6 26.3 12 h after light 2.0 1.9 2.1 4 h after dark 12.149999999999999 0.9 23.4 8 h after dark 17.6 12.5 22.7 12 h after dark 8.549999999999999 3.9 13.2