condition	mean	min	max
4 h after light	7.51975	7.421869999999999	7.6909600000000005
8 h after light	7.473743333333333	7.35498	7.600560000000001
12 h after light	7.573303333333333	7.5288699999999995	7.59972
4 h after dark	7.543363333333334	7.31877	7.82777
8 h after dark	7.68528	7.49022	7.99998
12 h after dark	7.455793333333333	7.3183300000000004	7.62608