condition mean min max 4 h after light 2806.4 2806.4 2806.4 8 h after light 2996.35 2784.7 3208.0 12 h after light 2495.3 2227.9 2762.7 4 h after dark 2703.75 2332.5 3075.0 8 h after dark 2896.05 2781.6 3010.5 12 h after dark 2876.65 2808.5 2944.8