Flyradar over Europa

Tal er i meter hřjde. Hvis flyet er under 100 m. hřjde 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? nĺr du klikker pĺ flyet, det er den rute, at netop dette fly har taget som er trykt pĺ kortet Farven pĺ sporet bag flyet varierer afhćngigt af hřjden flyet havde pĺ 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/