condition	mean	min	max
4 h after light	7.424566666666666	7.34484	7.58351
8 h after light	7.583236666666667	7.4159	7.726960000000001
12 h after light	7.414106666666667	7.298210000000001	7.539739999999999
4 h after dark	7.799736666666667	7.71317	7.846310000000001
8 h after dark	7.6258	7.519	7.69623
12 h after dark	7.63734	7.5827100000000005	7.72616