condition	mean	min	max
4 h after light	8.36914	8.024339999999999	8.58109
8 h after light	8.22351	8.00591	8.394919999999999
12 h after light	8.400979999999999	8.073369999999999	8.627139999999999
4 h after dark	8.230516666666666	7.78171	8.53102
8 h after dark	8.334696666666666	8.03502	8.57135
12 h after dark	8.515876666666667	8.10844	8.791