condition	mean	min	max
4 h after light	1.1	1.1	1.1
8 h after light	1.25	1.2	1.3
12 h after light	13.45	7.6	19.3
4 h after dark	25.85	25.5	26.2
8 h after dark	4.7	3.2	6.2
12 h after dark	8.55	2.3	14.8