condition	mean	min	max
4 h after light	8.2	8.2	8.2
8 h after light	13.950000000000001	7.8	20.1
12 h after light	21.15	20.5	21.8
4 h after dark	0.85	0.7	1.0
8 h after dark	0.9	0.7	1.1
12 h after dark	1.45	0.4	2.5