condition mean min max 4 h after light 2897.0 2897.0 2897.0 8 h after light 3099.55 2622.0 3577.1 12 h after light 2536.6000000000004 2357.8 2715.4 4 h after dark 2457.8 2057.4 2858.2 8 h after dark 2709.85 2653.6 2766.1 12 h after dark 2672.7 2602.1 2743.3