If you click the link underneath it, you can see the spreadsheet I used with the realm and region-level data.
Great spreadsheet. I used it and added a few values for the cities, such as total population and the population density at total population, and used that to change the value of GPC post. Then you see that a higher population density doesn't mean a lower GPC. With the added crime at high population density you would think this should imply, but seemingly it doesn't.
