condition	mean	min	max
4 h after light	2.3	2.3	2.3
8 h after light	4.1	3.0	5.2
12 h after light	3.25	2.4	4.1
4 h after dark	4.75	3.0	6.5
8 h after dark	2.85	2.1	3.6
12 h after dark	4.15	3.6	4.7