condition mean min max 4 h after light 2499.1 2499.1 2499.1 8 h after light 2532.25 2368.0 2696.5 12 h after light 2359.85 2204.0 2515.7 4 h after dark 2339.95 2231.2 2448.7 8 h after dark 2760.1 2590.5 2929.7 12 h after dark 2790.15 2483.8 3096.5