condition	mean	min	max
4 h after light	2.155755	2.05386	2.25765
8 h after light	2.175185	1.96657	2.3838
12 h after light	1.738725	1.43105	2.0464
4 h after dark	2.28087	2.24764	2.3141
8 h after dark	1.720345	1.48617	1.95452
12 h after dark	2.4986550000000003	2.47756	2.51975