condition mean min max 4 h after light 5116.9 5116.9 5116.9 8 h after light 5221.25 4390.5 6052.0 12 h after light 3718.25 2666.4 4770.1 4 h after dark 3350.7 2843.7 3857.7 8 h after dark 3153.85 2063.8 4243.9 12 h after dark 2616.75 2415.6 2817.9