condition	mean	min	max
4 h after light	3.0	3.0	3.0
8 h after light	4.3	3.9	4.7
12 h after light	4.85	2.4	7.3
4 h after dark	5.75	3.4	8.1
8 h after dark	2.85	2.6	3.1
12 h after dark	2.05	2.0	2.1