condition	mean	min	max
4 h after light	7.94307	7.885089999999999	7.98905
8 h after light	7.962203333333333	7.854480000000001	8.1055
12 h after light	7.92899	7.62211	8.08687
4 h after dark	8.153303333333334	7.97616	8.36895
8 h after dark	8.224916666666667	8.04482	8.44519
12 h after dark	8.066086666666667	7.793019999999999	8.314010000000001