Murphy USA (MUSA) came out with quarterly earnings of $3.12 per share, missing the Zacks Consensus Estimate of $4.09 per share. This compares to earnings of $4.80 per share a year ago. These figures are adjusted for non-recurring items.This quarterly report represents an earnings surprise of -23.72%. A quarter ago, it was expected that this gasoline station operator would post earnings of $6.31 per share when it actually produced earnings of $7, delivering a surprise of 10.94%.Over the last four quarters, t ...