You boss at Delta Airlines has noticed certain stations are consistently having issues with on-time departures (D0). He would like to know if this poor D0 performance is due to capacity growth at the respective stations. You are tasked with calculating D0 performance for all stations, identifying those with poor D0 scores and comparing these scores to first quarter (1Q) year-over-year (YoY) change in available seats (capacity) between 2014 and 2015. Does the data support your boss' suspicion that poor D0 performance is due to YoY capacity growth at these outstations