condition	mean	min	max
4 h after light	6.11826	5.92108	6.32
8 h after light	6.02904	5.95936	6.12706
12 h after light	5.85915	5.64626	6.02767
4 h after dark	6.062773333333333	5.9474	6.26375
8 h after dark	6.1858233333333335	6.102119999999999	6.240880000000001
12 h after dark	6.2300699999999996	5.95287	6.478269999999999