Flyradar over Europa

Tal er i meter hűjde. Hvis flyet er under 100 m. hűjde er sporet hvidt. The numbers are in meters. If the plane is below 100 meters in altitude, the trail will be white.

Dansk: Hvorfor har sporene af flyene forskellig farve? nćr du klikker pć flyet, det er den rute, at netop dette fly har taget som er trykt pć kortet Farven pć sporet bag flyet varierer afhængigt af hűjden flyet havde pć denne position

Engelsk: Why does the trail of the plane have different colors? When you click on a plane, the path that this particular plane has taken is printed on the map. The color of the trail behind the plane differs depending on the altitude the aircraft had at that position.
http://www.flightradar24.com/