condition	mean	min	max
4 h after light	8.008600000000001	7.79409	8.325560000000001
8 h after light	7.530266666666666	7.34594	7.84877
12 h after light	8.54005	8.25287	8.80756
4 h after dark	7.992076666666667	7.94907	8.04762
8 h after dark	7.833889999999999	7.6273100000000005	8.108039999999999
12 h after dark	7.683839999999999	7.490989999999999	7.98879