condition	mean	min	max
4 h after light	9.10717	9.08654	9.12573
8 h after light	9.253423333333334	9.05424	9.412460000000001
12 h after light	8.98836	8.96861	9.008469999999999
4 h after dark	9.198166666666667	9.05258	9.381110000000001
8 h after dark	9.457550000000001	9.384730000000001	9.517430000000001
12 h after dark	9.698683333333333	9.62755	9.82217