condition	mean	min	max
4 h after light	1.5	1.5	1.5
8 h after light	3.1	1.5	4.7
12 h after light	2.6	1.5	3.7
4 h after dark	3.25	2.3	4.2
8 h after dark	4.85	4.2	5.5
12 h after dark	8.45	1.5	15.4