condition mean min max 4 h after light 864.7 864.7 864.7 8 h after light 939.55 898.4 980.7 12 h after light 814.35 805.6 823.1 4 h after dark 945.6 933.7 957.5 8 h after dark 1180.1 1050.5 1309.7 12 h after dark 1133.4499999999998 1082.1 1184.8