Documentation of statistics: Radio and TV Statistics: Advertising (Discontinued)
VIR317 is based on TNS Gallup Media Intelligence/Gallup AdFacts: TNS Gallup Media Intelligence measures advertising campaigns from TV, print and radio, and receives reports from outdoor, cinema and online advertising, but does not register media such as sponsoring agreements, classified ads and major in-store campaigns.
https://www.dst.dk/en/Statistik/dokumentation/documentationofstatistics/radio-and-tv-statistics--advertising--discontinued-
Documentation of statistics