condition	mean	min	max
4 h after light	6.576756666666666	6.42577	6.774089999999999
8 h after light	7.573219999999999	7.159739999999999	7.889639999999999
12 h after light	7.34917	7.04935	7.607889999999999
4 h after dark	7.819966666666666	7.357989999999999	8.37862
8 h after dark	7.914046666666667	7.458539999999999	8.22625
12 h after dark	7.578796666666666	7.54702	7.62125