condition	mean	min	max
4 h after light	8.545589999999999	8.32664	8.681189999999999
8 h after light	8.657856666666667	8.541	8.79327
12 h after light	8.68405	8.59047	8.77765
4 h after dark	8.631023333333333	8.50348	8.75801
8 h after dark	8.455636666666667	8.19866	8.73237
12 h after dark	8.310319999999999	8.090119999999999	8.46871