condition	mean	min	max
4 h after light	6.865645000000001	6.4534	7.27789
8 h after light	7.58351	7.4858	7.68122
12 h after light	7.2761949999999995	7.20149	7.3509
4 h after dark	9.928795000000001	9.70289	10.1547
8 h after dark	8.879925	8.55118	9.20867
12 h after dark	8.216115	7.84379	8.58844