condition	mean	min	max
4 h after light	4.75232	4.63961	4.86503
8 h after light	4.966565	4.63381	5.29932
12 h after light	7.988415	7.67564	8.30119
4 h after dark	8.932485	8.60812	9.25685
8 h after dark	8.23954	8.23516	8.24392
12 h after dark	6.886775	6.6659	7.10765