condition	mean	min	max
4 h after light	0.7	0.7	0.7
8 h after light	4.15	0.6	7.7
12 h after light	1.05	0.8	1.3
4 h after dark	2.95	2.5	3.4
8 h after dark	1.0	0.8	1.2
12 h after dark	9.15	6.0	12.3