We have been tracking planes using transponders with Mode S (mostly commercial aircraft) over the North of England using a Raspberry Pi.  Each CSV file shows a single day and is approximately 160,000 rows of data. Recorded data altitude(feet), latitude, longitude, date, time, angle, distance, squawk, ground_speed, track, callsign For example:4065A8,12100,53.37484,-1.67388,2017/02/11,00:00:00.287,170.63,25.32,5466,288,179,EXS014W  There is a plane with transponder id 4065A8, at an altitude of 12,100 feet, overhead the A57 (snake road)...