condition	mean	min	max
4 h after light	8.6917165	8.507971	8.875462
8 h after light	9.3949105	9.368883	9.420938
12 h after light	8.9429955	8.852765	9.033226
4 h after dark	9.0089015	8.302991	9.714812
8 h after dark	9.8748225	9.165549	10.584096
12 h after dark	9.214007	9.214007	9.214007