condition	mean	min	max
4 h after light	8.972735	8.34068	9.60479
8 h after light	7.630285000000001	6.76706	8.49351
12 h after light	4.620165	4.31871	4.92162
4 h after dark	5.070375	4.43409	5.70666
8 h after dark	4.393115	4.01049	4.77574
12 h after dark	7.754695	7.47731	8.03208