condition	mean	min	max
4 h after light	1.0	1.0	1.0
8 h after light	21.0	20.6	21.4
12 h after light	1.4000000000000001	0.6	2.2
4 h after dark	15.45	3.0	27.9
8 h after dark	1.75	1.4	2.1
12 h after dark	2.65	0.8	4.5