condition	mean	min	max
4 h after light	7.906245	6.94685	8.86564
8 h after light	5.714635	4.89606	6.53321
12 h after light	5.6744	5.16002	6.18878
4 h after dark	6.98241	6.58499	7.37983
8 h after dark	7.076879999999999	6.56366	7.5901
12 h after dark	8.08622	7.57533	8.59711