condition mean min max 4 h after light 7064.7 7064.7 7064.7 8 h after light 5177.85 3496.3 6859.4 12 h after light 2994.1 2653.0 3335.2 4 h after dark 2232.05 1867.5 2596.6 8 h after dark 3196.7 1740.5 4652.9 12 h after dark 5978.15 4445.3 7511.0