condition mean min max 4 h after light 7.0 7.0 7.0 8 h after light 10.0 7.2 12.8 12 h after light 15.799999999999999 15.2 16.4 4 h after dark 22.049999999999997 9.7 34.4 8 h after dark 14.55 4.3 24.8 12 h after dark 15.850000000000001 6.4 25.3