Unstandardized Choropleth Map

http://pubs.er.usgs.gov/

Above is an example of an Unstandardized Choropleth map, this map type holds the same values as a typical choropleth map but with the difference in the data being portrayed. Unstandardized maps utilize raw data on the map rather than data that has been standardized.   The map above represents rainfall water withdrawals with the numerical data represented in millions of gallons.