condition	mean	min	max
4 h after light	15.27695	15.2546	15.2993
8 h after light	9.680325	8.67885	10.6818
12 h after light	13.715599999999998	12.6604	14.7708
4 h after dark	16.2924	15.4195	17.1653
8 h after dark	29.9515	29.1664	30.7366
12 h after dark	25.584449999999997	25.3526	25.8163