condition	mean	min	max
4 h after light	8.4729295	7.920546	9.025313
8 h after light	7.644062	7.037947	8.250177
12 h after light	8.30155	8.250177	8.352923
4 h after dark	8.093152	7.170893	9.015411
8 h after dark	8.549192	8.196899	8.901485
12 h after dark	7.436483	7.436483	7.436483