It's interesting to note that NW reports a 'drop' in passenger traffic from the previous timeframe. Yet if you add in the Mesaba and Pinnacle domestic numbers (which haven't been released yet), the combined numbers of the three show that domestic traffic for NW as a whole is near flat. Shows how dramatic the shift to Pinnacle flying has been this past year.

(I maintain a spreadsheet that combines the monthly domestic total of all three...keeps this bored, furloughed pilot busy).