condition mean min max 0 h after light 15.43875 14.9601 15.9174 4 h after light 11.857 11.4247 12.2893 8 h after light 11.52065 11.3893 11.652 4 h after dark 12.15625 11.9525 12.36 8 h after dark 11.57875 11.0964 12.0611 12 h after dark 13.2812 10.7224 15.84