condition mean min max 4 h after light 7.903169999999999 6.46421 9.34213 8 h after light 8.25461 8.02229 8.48693 12 h after light 11.1592 10.2265 12.0919 4 h after dark 18.434633333333334 17.5206 20.1969 8 h after dark 14.123099999999999 13.2304 15.6343 12 h after dark 11.129536666666667 9.90531 12.2199