condition	mean	min	max
4 h after light	8.791409999999999	8.71261	8.94768
8 h after light	8.620166666666666	8.52891	8.7301
12 h after light	9.142703333333333	9.01282	9.243689999999999
4 h after dark	8.40235	8.28144	8.5328
8 h after dark	8.404996666666666	8.233989999999999	8.63888
12 h after dark	8.49243	8.377	8.69021