condition mean min max 4 h after light 7.982035 7.57692 8.38715 8 h after light 10.5195 10.4673 10.5717 12 h after light 12.16748 9.92246 14.4125 4 h after dark 10.742636666666666 9.64331 11.5114 8 h after dark 12.581166666666666 11.2753 14.5382 12 h after dark 8.29561 5.90296 9.86195