condition	mean	min	max
4 h after light	8.570196666666666	8.51953	8.62866
8 h after light	8.41026	8.321639999999999	8.49871
12 h after light	8.438633333333334	8.27282	8.62148
4 h after dark	8.43196	8.31452	8.55756
8 h after dark	8.387006666666666	8.1033	8.61298
12 h after dark	8.06921	7.9481399999999995	8.13108