condition	mean	min	max
4 h after light	17.8	17.8	17.8
8 h after light	17.75	4.9	30.6
12 h after light	20.35	14.6	26.1
4 h after dark	25.5	2.4	48.6
8 h after dark	8.3	3.3	13.3
12 h after dark	13.65	1.5	25.8