condition	mean	min	max
4 h after light	1.1	1.1	1.1
8 h after light	3.05	2.0	4.1
12 h after light	2.25	1.5	3.0
4 h after dark	2.55	2.4	2.7
8 h after dark	3.8	2.6	5.0
12 h after dark	2.05	1.9	2.2