condition	mean	min	max
4 h after light	3.4	3.4	3.4
8 h after light	4.7	3.9	5.5
12 h after light	2.85	2.6	3.1
4 h after dark	1.85	1.7	2.0
8 h after dark	3.6	2.7	4.5
12 h after dark	4.8	1.4	8.2