condition mean min max 4 h after light 1081.321308 872.564405 1290.078211 8 h after light 961.245804 691.474831 1231.016777 12 h after light 715.056611 547.529905 882.583317 4 h after dark 253.42292550000002 152.921487 353.924364 8 h after dark 185.518968 135.982226 235.05571 12 h after dark 728.468697 728.468697 728.468697