condition	mean	min	max
4 h after light	6.2	6.2	6.2
8 h after light	3.15	2.8	3.5
12 h after light	22.3	11.6	33.0
4 h after dark	44.7	43.6	45.8
8 h after dark	51.5	32.6	70.4
12 h after dark	60.05	51.3	68.8