condition	mean	min	max
4 h after light	6.6705	6.24616	7.09484
8 h after light	6.175695	5.97365	6.37774
12 h after light	6.460125	5.93426	6.98599
4 h after dark	8.950605	8.72703	9.17418
8 h after dark	8.082335	7.82899	8.33568
12 h after dark	7.91971	6.61859	9.22083