condition mean min max 4 h after light 17.8 17.8 17.8 8 h after light 7.3999999999999995 2.6 12.2 12 h after light 6.5 5.1 7.9 4 h after dark 11.6 5.0 18.2 8 h after dark 8.1 4.5 11.7 12 h after dark 2.8499999999999996 2.4 3.3