condition mean min max 4 h after light 4443.8 4443.8 4443.8 8 h after light 5130.35 4982.0 5278.7 12 h after light 5591.9 5571.8 5612.0 4 h after dark 6398.5 6375.7 6421.3 8 h after dark 6181.6 5700.2 6663.0 12 h after dark 4964.4 3924.9 6003.9