condition	mean	min	max
4 h after light	8.511783333333334	7.8608	9.16576
8 h after light	8.493336666666666	7.77614	9.488719999999999
12 h after light	8.57462	8.04406	8.94784
4 h after dark	8.28208	7.68888	8.76593
8 h after dark	8.546126666666666	8.20828	8.835189999999999
12 h after dark	7.8101	7.12264	8.3185