It's not. It took me a second to figure out, but there is a numbered dot with shading relative to ownership on the state. Then there is also a black dot with a line that labels it. For example, look at Cary, NC. I was confused because it looks like it's labeled twice, but it's just the way that the chart was designed. If you look at a state like Texas with more cities in the data, it makes sense that it makes it easier to name each of the cities from one point, but it can look confusing when a state only has one city in the data.