condition	mean	min	max
4 h after light	0.2	0.2	0.2
8 h after light	12.5	4.3	20.7
12 h after light	0.8	0.7	0.9
4 h after dark	0.5	0.4	0.6
8 h after dark	6.85	0.7	13.0
12 h after dark	3.8	0.6	7.0