condition	mean	min	max
4 h after light	17.7	17.7	17.7
8 h after light	3.5	2.0	5.0
12 h after light	0.85	0.5	1.2
4 h after dark	5.65	4.6	6.7
8 h after dark	12.65	1.0	24.3
12 h after dark	2.4	2.4	2.4