Table 4: Quarterly Domestic Operating profit/loss margin (in percent),,,,,,, Regional Carriers ,,,,,,, Ranked by 1st Quarter 2004 Margin ,,,,,,, (Operating Profit/Loss as Percent of Total Operating Revenue),,,,,,, 1Q 2004 Rank,Regional Carriers,1st Quarter 2003 (%),2nd Quarter 2003 (%),3rd Quarter 2003 (%),4th Quarter 2003 (%),1st Quarter 2004 (%),1st Quarter Operating Profit/Loss$(Millions) 1,American Eagle,9.6,16.2,15.7,20.6,16.3,53.8 2,SkyWest,9.7,11.4,15.3,12.1,13.7,34.9 3,Air Wisconsin,6.8,11.6,21.4,12.6,13.3,20.9 4,Express Jet,13.4,12.4,12.8,12.9,12.5,42.4 5,Atlantic Southeast,11.2,15.2,12.7,9.7,7.7,16.1 6,Comair,5.6,13.6,15.8,16.5,6.8,19.3 7,Atlantic Coast,1.5,18.3,16.6,11.5,6.7,14.2 ,Group Total,8.6,14.2,15.3,14.1,11.3,201.7 Source: Form 41; Schedule P1.2,,,,,,,