condition	mean	min	max
4 h after light	7.9045499999999995	7.522539999999999	8.26792
8 h after light	7.968253333333334	7.603110000000001	8.32765
12 h after light	8.106843333333334	7.86747	8.26315
4 h after dark	7.92355	7.50639	8.21469
8 h after dark	7.864413333333334	7.41545	8.098310000000001
12 h after dark	7.8130766666666664	7.59963	7.95441