USCRWTIC is usually at parity to the front-month Nymex crude oil contract, with the exception of its three-day delivery scheduling period after the front-month contract expires. This is also known as the roll, (See USCSWTIR <cmdty>. Another price differential is the EFP (Exchange of Futures for Physical) ticker USCSWTIC <cmdty>. An EFP price differential will sometimes affect USCRWTIC when traders pay a premium to secure domestic WTI in favor of foreign crude oil alternatives at Cushing, OK, such as North Sea Brent Blend. See ticker USCSWTIC <cmdty>. West Texas Intermediate traded in pipeline lots of 1,000 to 5,000 barrels a day for delivery between the 25th of one month to the 25th of the next month. These prices are for physical shipment. API gravity: 40 deg Sulfur content: 0.3 % wt Barrels per ton: 7.640 Pour point: -5.0 deg F Loading Port: fob Cushing, Ok. For prices before 1983 please see DOEUUS <INDEX>. U.S. Spot WTI assessed using October IPE Brent Crude contract during NYMEX closure on 9/12/2001-9/13/2001.