The Bee's weekly price check on gasoline prices across the central San Joaquin Valley and California from AAA Gas Prices shows that the average price for regular unleaded in California on Monday, May 13, went down a few pennies over the past week. The statewide average was about $4.07 per gallon, almost three cents lower than a week ago and up about 16 cents from the April 13 average. Since March 11, prices across the state have gone up by an average of more than 76 cents per gallon. Click a dot to see the average price for that point in time in each of the listed markets.