condition	mean	min	max
4 h after light	7.01782	6.83865	7.11488
8 h after light	7.12218	6.81773	7.50975
12 h after light	7.2335	6.99737	7.53805
4 h after dark	7.224293333333334	6.93553	7.678489999999999
8 h after dark	7.06134	6.84457	7.35238
12 h after dark	7.163036666666667	6.91712	7.508839999999999