condition	mean	min	max
4 h after light	8.6915095	8.403914	8.979105
8 h after light	8.247021499999999	7.920494	8.573549
12 h after light	7.563100500000001	7.125032	8.001169
4 h after dark	8.740147	8.217883	9.262411
8 h after dark	8.425858	8.036291	8.815425
12 h after dark	8.678749	8.678749	8.678749