condition mean min max 4 h after light 4241.9 4241.9 4241.9 8 h after light 4722.6 4216.1 5229.1 12 h after light 5145.15 4616.8 5673.5 4 h after dark 4890.8 4801.1 4980.5 8 h after dark 4216.5 3859.0 4574.0 12 h after dark 3758.55 3754.2 3762.9