Sunday's Business section incorrectly characterized the effect of deregulation on air fares. Airlines for America, an industry trade group, says that in 2011 dollars, the average domestic round-trip airfare dropped from about $577 in 1979, when deregulation began, to $343 last year. The U.S. Department of Transportation, which has tracked domestic airfares via a consistent methodology since 1995, says the average domestic round-trip fare dropped from $288 in fourth quarter 1995 to $251 in fourth quarter 2011 in 1995 dollars.

A story Sunday wrongly created the impression that City Councilwoman Marian B. Tasco had expressed "grave reservations" about Philadelphia Gas Works' paying for all the advisory fees involved in selling the city-owned utility. Her statement pertained specifically to the payment of fees for a lobbyist and a communications consultant.