condition mean min max 3 h after light 11.8172 11.285 12.2841 6 h after light 10.978036666666666 8.45171 12.6394 9 h after light 11.6966 11.1408 12.2324 12 h after light 14.741 13.6876 15.7935 3 h after dark 13.6815 10.2777 15.6232 6 h after dark 24.7399 21.9559 27.088 9 h after dark 15.9186 13.1277 17.9104 12 h after dark 17.35226666666667 12.7803 24.8728