condition	mean	min	max
4 h after light	7.842759999999999	7.69787	7.948169999999999
8 h after light	8.05434	7.854310000000001	8.17725
12 h after light	7.894973333333334	7.51128	8.08911
4 h after dark	8.03185	7.79495	8.2083
8 h after dark	7.88127	7.730169999999999	7.991210000000001
12 h after dark	7.95761	7.9231	8.00405