condition	mean	min	max
4 h after light	8.018455	7.98474	8.05217
8 h after light	6.2788699999999995	5.93771	6.62003
12 h after light	7.235305	6.93798	7.53263
4 h after dark	9.870175	9.37355	10.3668
8 h after dark	8.81776	8.69613	8.93939
12 h after dark	8.39707	8.27541	8.51873