condition	mean	min	max
4 h after light	1.2	1.2	1.2
8 h after light	1.75	1.1	2.4
12 h after light	2.1	1.6	2.6
4 h after dark	6.4	4.3	8.5
8 h after dark	22.75	19.7	25.8
12 h after dark	11.3	2.0	20.6