condition	mean	min	max
4 h after light	19.8	19.8	19.8
8 h after light	13.95	4.9	23.0
12 h after light	19.8	12.4	27.2
4 h after dark	12.25	10.6	13.9
8 h after dark	15.05	4.9	25.2
12 h after dark	3.4000000000000004	1.9	4.9