condition	mean	min	max
4 h after light	1.7	1.7	1.7
8 h after light	2.55	1.4	3.7
12 h after light	2.75	2.7	2.8
4 h after dark	5.1	4.9	5.3
8 h after dark	6.45	2.6	10.3
12 h after dark	4.35	3.8	4.9