U.S. refinery imports of all grades of crude oil, i.e., heavy sour, heavy sweet, light sour, light sweet, and medium crude oil. Data organized by refinery PADD, i.e., East Coast, Midwest, Gulf Coast, Rocky Mountain, West Coast, and Territories. Data in monthly or annual time series. Users of the EIA API are required to obtain an API Key via this registration form: http://www.eia.gov/beta/api/register.cfm