condition mean min max 4 h after light 3154.4 3154.4 3154.4 8 h after light 2602.25 2157.5 3047.0 12 h after light 2779.1000000000004 2358.4 3199.8 4 h after dark 2053.45 1658.3 2448.6 8 h after dark 1741.1999999999998 1549.6 1932.8 12 h after dark 1804.2 1369.6 2238.8