condition	mean	min	max
4 h after light	6.3	6.3	6.3
8 h after light	4.4	4.3	4.5
12 h after light	2.35	1.8	2.9
4 h after dark	3.05	2.3	3.8
8 h after dark	4.9	3.1	6.7
12 h after dark	5.65	4.5	6.8