condition mean min max 4 h after light 2010.9 2010.9 2010.9 8 h after light 1564.15 1489.2 1639.1 12 h after light 1674.4499999999998 1064.8 2284.1 4 h after dark 1274.9 626.8 1923.0 8 h after dark 985.7 429.6 1541.8 12 h after dark 1768.1 1482.1 2054.1