March 17- Average retail gasoline prices in Amarillo have risen 4.9 cents per gallon in the past week, averaging $3.26/g, that's according to GasBuddy's daily survey.
GasBuddy.com says the national average has increased 2.6 cents per gallon in the last week to $3.50/g.
Amarillo gas prices yesterday were 21.5 cents per gallon lower than the same day one year ago and are 21.5 cents per gallon higher than a month ago.
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