condition	mean	min	max
4 h after light	8.8743395	8.416284	9.332395
8 h after light	8.1698495	7.923415	8.416284
12 h after light	8.3945135	8.344571	8.444456
4 h after dark	8.0397885	7.98662	8.092957
8 h after dark	8.9247975	7.98122	9.868375
12 h after dark	7.545237	7.545237	7.545237