This is a stand-alone Rmarkdown document offering a short observation on the relationship between electric fuel stations and zip code income. It was inspired by a Tidy Tuesday challenge. It uses the alternative fuel stations database and two tables from the U.S. Census data--individual earnings (S2001) and family income (S1903) for the last 12 months, adjusted for inflation.
You can view the html output of this document at guasi.github.io/docs/e_stations.html.