condition mean min max 4 h after light 4.3 4.3 4.3 8 h after light 17.05 10.9 23.2 12 h after light 11.850000000000001 2.1 21.6 4 h after dark 17.85 11.1 24.6 8 h after dark 8.35 4.8 11.9 12 h after dark 14.149999999999999 3.9 24.4