Motorists in Pennsylvania continue to pay significantly above-average prices at the pump. As reported by Triple-A, the average price for a gallon of regular unleaded fell slightly in the Keystone State to just under four dollars, 17 cents, this as the corresponding national average dropped to three 87. The lowest price was found in Arkansas, which posted an average, per-gallon price of three bucks, 38 cents. At the other extreme, motorists in Hawaii were paying the most at the pump with an average price of five bucks, 32 cents.