ENERGY

Average Gas Prices Up Slightly: The nationwide figures signaled a leveling off just as the heavy summer demand is about to begin, an oil industry analyst said. The average price at the pump for all grades, including taxes, rose only 0.11 of one cent to 138.07 cents per gallon, according to the Lundberg Survey of more than 10,000 gasoline stations nationwide. Gasoline prices had been on the rise since Nov. 17, when the average price was 115.14 cents, nearly 23 cents lower than Lundberg’s most recent survey. Analyst Trilby Lundberg attributed the leveling off to the effect of lower crude oil prices.