Table 3. Quarterly Domestic Operating profit/loss margin (in percent),,,,,,, Low-Cost Carriers,,,,,,, Ranked by 4th Quarter 2003 Margin,,,,,,, (Operating Profit/Loss as Percent of Total Operating Revenue),,,,,,, 4Q 2003 Rank,Low-Cost Carriers,4th Quarter 2002 (%),1st Quarter 2003 (%),2nd Quarter 2003 (%),3rd Quarter 2003 (%),4th Quarter 2003 (%),4th Quarter Operating Profit/Loss $(Millions 1,Jet Blue,17,15.9,18.7,19.7,13.3,35.1 2,AirTran,7.2,4,13.1,11.1,8.7,20.8 3,Frontier,-5,-13.6,4.4,13.5,7.6,12.6 4,Southwest,6.2,3.4,9.2,12,7.4,110.9 5,America West,-7.9,-9.3,2.3,8.1,1,5.6 6,Spirit,-3.8,1.1,6.8,1.7,-2.9,-3.3 7,ATA,-14,-3.5,5.6,7.9,-6.6,-17.3 ,Group Total,2,0.7,8.4,11.2,5.3,164.5 Source: Form 41; Schedule P1.2,,,,,,,