Mean tornado path length (m) and path width (m) by (E)F scale

Annual mean tornado path length (meters), path width (meters), and path area (square meters) by (E)F scale category and year. Change the scales to (log)arithmic and the size to Area. Have fun! Data source: U.S. Storm Prediction Center. http://www.spc.noaa.gov/gis/svrgis/zipped/tornado.zip