condition	mean	min	max
4 h after light	12.5	12.5	12.5
8 h after light	4.35	2.9	5.8
12 h after light	2.0	0.6	3.4
4 h after dark	2.2	1.8	2.6
8 h after dark	3.7	2.7	4.7
12 h after dark	2.45	2.0	2.9