condition mean min max 4 h after light 10.198648 9.592195 10.805101 8 h after light 8.773091999999998 8.648549 8.897635 12 h after light 9.104970999999999 8.182473 10.027469 4 h after dark 8.6807415 7.461411 9.900072 8 h after dark 9.2703165 7.36152 11.179113 12 h after dark 9.003127 9.003127 9.003127