condition	mean	min	max
4 h after light	0.6	0.6	0.6
8 h after light	16.7	14.0	19.4
12 h after light	8.4	7.4	9.4
4 h after dark	0.9	0.8	1.0
8 h after dark	4.0	2.8	5.2
12 h after dark	2.35	1.1	3.6