condition	mean	min	max
4 h after light	8.992329999999999	8.895389999999999	9.04845
8 h after light	9.16215	9.145489999999999	9.18835
12 h after light	9.287316666666666	9.0246	9.474089999999999
4 h after dark	9.216353333333334	9.15358	9.25815
8 h after dark	9.02716	8.90126	9.16123
12 h after dark	8.891893333333334	8.680769999999999	9.06981