This weekend, Pennsylvania motorists saw ever-so-slightly lower prices at the pump. As reported by Triple-A, the average price for a gallon of regular fell Friday in the Keystone State to just under three dollars, 53 cents, this as the corresponding national figure declined incrementally to just under three twenty-seven. Oklahoma remains the low-price leader, posting a Sooner State average of about two bucks, 85 cents. At the opposite end of the gas-price spectrum, prices were up slightly yesterday in Hawaii, inching upward to just over four bucks, 70 cents.