condition mean min max 4 h after light 9.71959 9.081975 10.357205 8 h after light 8.621178 8.535531 8.706825 12 h after light 9.5187795 8.698769 10.33879 4 h after dark 8.262699999999999 8.037092 8.488308 8 h after dark 8.8131815 7.833213 9.79315 12 h after dark 10.746517 10.746517 10.746517