condition	mean	min	max
4 h after light	1.8	1.8	1.8
8 h after light	2.4	2.3	2.5
12 h after light	16.5	10.2	22.8
4 h after dark	15.4	10.7	20.1
8 h after dark	8.1	3.6	12.6
12 h after dark	10.15	2.8	17.5