condition	mean	min	max
4 h after light	8.594506666666668	8.278310000000001	8.81674
8 h after light	8.521603333333333	8.28173	8.69192
12 h after light	8.42013	7.9859100000000005	8.6521
4 h after dark	8.62766	8.38605	8.86767
8 h after dark	8.571439999999999	8.30339	8.81659
12 h after dark	8.545746666666666	8.49395	8.57745