Indeed, the map is hard to parse. I think that this presentation gives good advice regarding maps design: https://speakerdeck.com/cherdarchuk/data-looks-better-

Indeed, the map is hard to parse. I think that this presentation gives good advice regarding maps design: https://speakerdeck.com/cherdarchuk/data-looks-better-naked-maps-edition https://speakerdeck.com/cherdarchuk/data-looks-better-naked-...