condition	mean	min	max
4 h after light	1.8	1.8	1.8
8 h after light	4.35	2.6	6.1
12 h after light	2.0	1.9	2.1
4 h after dark	3.55	2.3	4.8
8 h after dark	2.35	2.2	2.5
12 h after dark	2.5	2.5	2.5