condition mean min max 4 h after light 9.92947 5.68521 12.0909 8 h after light 6.892576666666667 2.26927 11.6729 12 h after light 5.59799 3.33674 7.53941 4 h after dark 6.45916 5.65437 7.68961 8 h after dark 7.036003333333333 5.51195 8.07301 12 h after dark 10.29857 9.06942 12.1825