The nationwide average for a gallon of regular gasoline has risen by 34 cents since July 1. Some states have seen much larger increases because of pipeline and refinery problems, while eight others have seen a decline. What follows is a list of the 50 states and the District of Columbia in order of the biggest to smallest differences in price between July 1 and Aug. 10. Below that is a list in alphabetical order. Also includes current state averages.

State Change from July 1 Avg. on Aug. 10