RIVERSIDE, Calif. -

The streak of decreases to the average price of a  gallon of self-serve regular gasoline in the Inland Empire was extended today to 27 days, but barely, as it dropped two-tenths of a cent to $3.93, its lowest amount since March 5.

   The average price in Riverside and San Bernardino counties has decreased 21.8 cents during the streak, including nine-tenths of a cent on Sunday, according to figures from the AAA and Oil Price Information Service.

   The average price is 5.7 cents less than one week ago, 21.2 cents lower than one month ago and 5.6 cents below what it was one year ago.

   The 27-day streak is the longest since a 40-day streak from Sept. 19-Oct. 28, 2013. The current streak was immediately preceded by 11 increases in 14 days which pushed the average price to its highest amount since May 19.

   The dropping prices are the result of increased supply stemming from refineries running at a higher capacity, according to Jeffrey Spring of the Automobile Club of Southern California.