condition	mean	min	max
4 h after light	7.990553333333334	7.53633	8.304780000000001
8 h after light	6.419373333333334	6.21478	6.59002
12 h after light	6.91666	6.7347	7.0894
4 h after dark	8.32163	8.1338	8.57036
8 h after dark	8.79074	8.41743	8.9855
12 h after dark	9.16591	8.68748	9.4269