condition	mean	min	max
4 h after light	9.58891	9.45814	9.78613
8 h after light	9.17648	8.91005	9.32135
12 h after light	8.92038	8.79922	9.00429
4 h after dark	9.133593333333334	8.91141	9.30974
8 h after dark	9.481763333333333	9.37905	9.61346
12 h after dark	9.54577	9.50042	9.59653