condition	mean	min	max
4 h after light	3.6	3.6	3.6
8 h after light	2.25	2.2	2.3
12 h after light	3.2	2.6	3.8
4 h after dark	6.35	2.0	10.7
8 h after dark	3.0	3.0	3.0
12 h after dark	5.05	3.9	6.2