condition	mean	min	max
4 h after light	8.1025695	7.792997	8.412142
8 h after light	7.853432	7.280328	8.426536
12 h after light	8.5280165	8.068373	8.98766
4 h after dark	8.3585055	8.250177	8.466834
8 h after dark	8.3585055	8.250177	8.466834
12 h after dark	7.252192	7.252192	7.252192