condition	mean	min	max
4 h after light	1.4	1.4	1.4
8 h after light	8.5	7.2	9.8
12 h after light	20.8	17.8	23.8
4 h after dark	14.35	13.5	15.2
8 h after dark	28.05	13.1	43.0
12 h after dark	8.45	4.6	12.3