condition mean min max 4 h after light 1.9813299999999998 1.51264 2.45002 8 h after light 3.1610449999999997 3.13189 3.1902 12 h after light 3.699585 3.35865 4.04052 4 h after dark 5.21237 4.58581 5.83893 8 h after dark 2.9359349999999997 2.78447 3.0874 12 h after dark 2.343685 2.18375 2.50362