condition	mean	min	max
4 h after light	1.0	1.0	1.0
8 h after light	2.8	2.5	3.1
12 h after light	4.0	3.0	5.0
4 h after dark	0.8	0.7	0.9
8 h after dark	5.35	2.7	8.0
12 h after dark	5.9	4.9	6.9