condition mean min max 4 h after light 1927.9466666666667 1788.6670000000001 2007.4379999999999 8 h after light 1733.9170000000001 1472.7820000000002 1884.0410000000002 12 h after light 1456.5275666666666 724.4237 1990.036 16 h after light 2941.6676666666667 2421.391 3402.0570000000002 4 h after dark 2371.942 1967.9270000000001 2965.5490000000004 8 h after dark 1493.7256666666667 1066.7 1729.9160000000002