condition	mean	min	max
4 h after light	7.690983333333333	7.3634699999999995	7.870989999999999
8 h after light	7.6625	7.356439999999999	7.85145
12 h after light	7.7068666666666665	7.4123	7.87133
4 h after dark	7.63034	7.32609	7.809060000000001
8 h after dark	7.663293333333334	7.29541	7.9360800000000005
12 h after dark	7.696993333333333	7.495480000000001	7.82857