condition mean min max 4 h after light 8.884025999999999 8.283154 9.484898 8 h after light 9.2829825 9.048208 9.517757 12 h after light 9.08512 8.685342 9.484898 4 h after dark 10.6462985 10.239951 11.052646 8 h after dark 8.9756185 8.727287 9.22395 12 h after dark 9.13716 9.13716 9.13716