condition	mean	min	max
4 h after light	5.1	5.1	5.1
8 h after light	12.4	2.7	22.1
12 h after light	3.6	2.2	5.0
4 h after dark	11.3	4.4	18.2
8 h after dark	16.3	9.8	22.8
12 h after dark	4.5	1.4	7.6