condition	mean	min	max
4 h after light	7.7475385	7.218622	8.276455
8 h after light	7.1248725	6.866532	7.383213
12 h after light	7.9442325	7.864825	8.02364
4 h after dark	8.581508	8.581363	8.581653
8 h after dark	8.0260855	7.991503	8.060668
12 h after dark	7.953747	7.953747	7.953747