What is latin airplay billboard?

Latin Airplay is a weekly music chart published by Billboard magazine which tracks the radio airplay of Spanish-language songs in the United States. The chart ranks the most-played songs on Latin radio stations and is based on audience impressions measured by Nielsen Broadcast Data Systems. The chart includes a variety of genres including Regional Mexican, Tropical, Pop, and Urban Latin music. The Latin Airplay chart is considered a key indicator of the popularity and success of Latin music in the American market. The first Latin Airplay chart was published in 1994 and has since become a go-to source for Latin music professionals and fans alike.