condition mean min max 4 h after light 1401.6 1401.6 1401.6 8 h after light 1497.85 1014.0 1981.7 12 h after light 1641.0 1615.7 1666.3 4 h after dark 1704.0 1398.8 2009.2 8 h after dark 1784.6999999999998 1670.8 1898.6 12 h after dark 1337.75 1276.6 1398.9