condition	mean	min	max
4 h after light	7.53402	7.467569999999999	7.63316
8 h after light	7.71415	7.62458	7.79932
12 h after light	7.72425	7.6226199999999995	7.82797
4 h after dark	7.68359	7.601369999999999	7.83767
8 h after dark	7.8749633333333335	7.77465	8.06498
12 h after dark	7.737033333333334	7.660760000000001	7.78222