This rocks — not much more needs to be said.   Kudos to David and Darren for putting this data together!!!

 “Our Methodology for Determining Best Citations per City

Using Whitespark's Local Citation Finder, we searched Google for the most common keywords within 71 local search categoriesacross 53 large US cities, 20 medium-sized cities, and 20 smaller cities. We then scored the sites inversely based on ranking position combined with overall number of occurrences. The sites that appeared most often and with the highest rankings were deemed “best.”

This is a resource of the top 10 citations influencing local search by city!  If you are a business owner, or SEO firm, this is outstanding data for you to work with.