condition	mean	min	max
4 h after light	8.1833655	8.044056	8.322675
8 h after light	8.3619225	8.194654	8.529191
12 h after light	8.6780105	8.322675	9.033346
4 h after dark	8.321053	7.315097	9.327009
8 h after dark	8.793454	7.195596	10.391312
12 h after dark	9.268729	9.268729	9.268729