condition mean min max 4 h after light 3.1 3.1 3.1 8 h after light 12.850000000000001 9.4 16.3 12 h after light 3.8499999999999996 2.1 5.6 4 h after dark 15.95 2.2 29.7 8 h after dark 1.8 1.8 1.8 12 h after dark 8.0 7.3 8.7