condition	mean	min	max
4 h after light	6.07808	5.97291	6.23613
8 h after light	6.01969	5.90322	6.09403
12 h after light	5.89115	5.62954	6.15304
4 h after dark	6.182753333333333	5.989380000000001	6.39998
8 h after dark	6.16185	5.96208	6.391030000000001
12 h after dark	6.1428166666666675	6.0465800000000005	6.2138800000000005