condition	mean	min	max
4 h after light	4.862635	4.25761	5.46766
8 h after light	7.867335	7.74032	7.99435
12 h after light	9.33413	9.03004	9.63822
4 h after dark	13.22755	12.6443	13.8108
8 h after dark	11.22115	10.9778	11.4645
12 h after dark	8.26116	8.15787	8.36445