Dataset: distang26.dat Source: Various websites Description: Population, location and distances for 4177 US air routes Variables/Columns Airport1 1-3 Airport2 5-7 Population city1 10-17 Population city2 20-27 Distance 30-33 Angle 36-40 Latitude city1 43-49 Latitude city2 50-54 Longitude city1 57-63 Longitude city2 66-72