condition mean min max 4 h after light 6929.91 6424.741 7369.281 8 h after light 3177.066333333333 2963.216 3332.1220000000003 12 h after light 789.3909000000001 412.8354 1175.7910000000002 16 h after light 2203.321 1721.025 3127.6279999999997 4 h after dark 3490.1023333333333 2984.98 4339.987 8 h after dark 9953.433333333332 6944.5869999999995 12952.75