Fort Lauderdale, FL – Only a week after reversing course, the price of gas turned once more, as the national average pushed back up about a penny per gallon, according to the U.S. Energy Information Administration. The weekly E.I.A. gas price survey shows prices settled, nationally, at just over $2.31 per gallon. Prices across the East Coast were generally down, but a significant price hike in California dragged the national averages higher. The cost of diesel increased this week, albeit barely, according to the E.I.A. The average cost of diesel went up about a half a penny per gallon, as the national price average pushed up to $2.58. Regional cost averages for both gasoline and diesel are listed below, ranked from highest to lowest price.