Very interesting table,

It shows that UA has by far the highest tarrifs and that JFK is by far the most expensive Hub...

I guess there's something to be said for Bermuda2 if you're AA or UA..

I'm suprised that the average fare paid is as low as it is though, especially at the international hubs..
I'm also suprised that AA is consistently cheaper than UA...

Tabulated numbers can show up some amazing and unexpected results.. look for yourself..