condition	mean	min	max
4 h after light	7.812173333333333	7.6787399999999995	7.963360000000001
8 h after light	7.7627033333333335	7.677969999999999	7.83023
12 h after light	7.616866666666667	7.52902	7.7274199999999995
4 h after dark	7.26958	7.02033	7.47708
8 h after dark	7.080660000000001	7.049510000000001	7.10991
12 h after dark	7.226636666666667	7.13265	7.29345