I assume if you only observe the data in isolation. But compiling that data would provide an image of where the density of stations are higher. Again, we can

I assume if you only observe the data in isolation. But compiling that data would provide an image of where the density of stations are higher. Again, we can assume that's probably around the bigger cities, but until we actual lay out the data, we are just assuming. Maybe it'll prove the data right, but maybe it will reveal something we didn't expect. Testing the obvious sometimes lead to unobvious observations.