condition	mean	min	max
4 h after light	7.89765	7.74074	8.00647
8 h after light	7.842033333333334	7.4396	8.06059
12 h after light	7.7773433333333335	7.3678300000000005	8.169210000000001
4 h after dark	7.63866	7.16087	8.10599
8 h after dark	7.611126666666667	7.02445	8.06455
12 h after dark	7.643303333333334	7.29967	7.83666