Definicija: in aviation is a volume of controlled airspace, normally around an airport, which extends from the surface to a specified upper limit, established to protect air traffic operating to and from that airport
Definicija: količnik med številom klikov oglasa in številom prikazov oglasa, izražen v odstotkih; razmerje pove, kako pogosto uporabniki, ki vidijo vaš oglas, tega na koncu tudi kliknejo.