(Decatur, IL) -- Gas prices continue to head north. Triple-A says the average price for a gallon of regular in Decatur is three-69. That’s four-cents more than last Tuesday. A month ago the median price was a paltry three-26, a difference of 43-cents. Champaign drivers are paying three-70 a gallon, an increase of nine-cents over the past seven days. Motorists in Bloomington are dishing out three-55 per gallon, a two-cent decline from last week’s average.