condition mean min max 4 h after light 17.6 17.6 17.6 8 h after light 14.2 6.2 22.2 12 h after light 14.35 9.8 18.9 4 h after dark 7.7 2.4 13.0 8 h after dark 1.9500000000000002 1.8 2.1 12 h after dark 15.299999999999999 5.2 25.4