condition	mean	min	max
4 h after light	1.477495	1.12799	1.827
8 h after light	1.0993115	0.921033	1.27759
12 h after light	1.602395	1.44626	1.75853
4 h after dark	2.6297	1.92357	3.33583
8 h after dark	1.96214	1.95346	1.97082
12 h after dark	1.98834	1.35126	2.62542