condition	mean	min	max
4 h after light	8.5111865	8.375402	8.646971
8 h after light	7.910299	7.620282	8.200316
12 h after light	8.8365045	8.483869	9.18914
4 h after dark	8.5747635	7.908863	9.240664
8 h after dark	8.3694575	8.227	8.511915
12 h after dark	8.62764	8.62764	8.62764