condition	mean	min	max
4 h after light	7.53729	7.49781	7.611789999999999
8 h after light	7.401433333333333	7.33932	7.52387
12 h after light	7.5393	7.453589999999999	7.59123
4 h after dark	7.851416666666666	7.742139999999999	7.96537
8 h after dark	7.78676	7.5932	7.947030000000001
12 h after dark	7.838826666666667	7.78673	7.918589999999999