condition	mean	min	max
4 h after light	1.2	1.2	1.2
8 h after light	4.2	3.1	5.3
12 h after light	2.45	2.0	2.9
4 h after dark	3.7	2.4	5.0
8 h after dark	2.05	1.5	2.6
12 h after dark	2.05	1.8	2.3