condition	mean	min	max
4 h after light	8.57657	7.07874	10.0744
8 h after light	9.576225	9.46711	9.68534
12 h after light	9.13419	9.11056	9.15782
4 h after dark	15.1004	12.9414	17.2594
8 h after dark	15.78235	14.7914	16.7733
12 h after dark	12.78115	12.5053	13.057