condition	mean	min	max
4 h after light	9.151433333333333	9.07217	9.26643
8 h after light	8.66583	8.61185	8.76732
12 h after light	8.83214	8.66137	8.98633
4 h after dark	9.13368	9.054260000000001	9.18626
8 h after dark	9.284076666666667	9.22293	9.34859
12 h after dark	9.43013	9.3247	9.593589999999999