Table 13: Passenger Airline System* Unit Revenue ,,,,,,, Airline Groups Ranked by 2nd Quarter 2008 Unit Revenue (Cents Per ASM),,,,,,, (Operating Revenue Per Available Seat Mile in cents),,,,,,, 2Q 2008 Rank,Airline Group,2nd Quarter 2007 ,3rd Quarter 2007 ,4th Quarter 2007 ,1st Quarter 2008 ,2nd Quarter 2008,2nd Quarter Operating Revenue $(Millions) 1,Regional,15.6,15.4,15.4,16.6,18.4,"2,922" 2,Network**,14.8,14.9,14.4,14.6,15.8,"28,141" 3,Low-Cost*** ,10.5,10.3,9.7,N/A,N/A,N/A ,21-Carrier Total,13.9,14.0,13.6,N/A,N/A,N/A "Source: Bureau of Transportation Statistics; Form 41, Schedule P1.2. T100; T2 Data",,,,,,, * System = domestic + international ,,,,,,, ** Alaska Airlines requested confidentiality for its 2nd Quarter 2008 data. Alaska’s numbers are included in previous quarter totals.,,,,,,, *** Allegiant Airlines requested confidentiality for its 2nd Quarter 2008 data. Allegiant’s numbers are included in previous quarter totals.,,,,,,, ,,,,,,,