condition	mean	min	max
4 h after light	7.081686666666667	6.86705	7.4404
8 h after light	7.667406666666667	7.627000000000001	7.71656
12 h after light	7.554243333333333	7.31113	7.796819999999999
4 h after dark	7.462	7.35902	7.642519999999999
8 h after dark	7.36728	7.264139999999999	7.49344
12 h after dark	6.67567	6.53642	6.79113