condition mean min max 4 h after light 4532.8 4532.8 4532.8 8 h after light 4216.9 4141.3 4292.5 12 h after light 4733.25 4454.5 5012.0 4 h after dark 5779.4 5129.4 6429.4 8 h after dark 5677.85 5500.1 5855.6 12 h after dark 4922.4 4474.2 5370.6