Measured track: 1,991 received points, joined in time order. The real captured path, never fabricated.0 ft≥ 35,000 ft
'Entry' and 'exit' mark where the station began and stopped receiving the aircraft, at the edges of the antenna's range: not where the aircraft appeared or vanished.
Flight profile
1693 aberrant measurement(s) dropped from the track (impossible altitude or speed, saturated frame): never smoothed, only declared.