TAM Ireland (Television Audience Measurement Ireland Ltd) oversees an accurate and effective audience measurement system for the whole of the television advertising industry in Ireland. TAM Ireland is made up of the majority of commercial broadcasters operating in Ireland (RTÉ, TV3, TG4, Channel 4, BSKYB Ireland, Viacom and Eir Sport) and the main Irish media buying agencies. We commission Nielsen TV Audience Measurement to carry out the actual measurement service. Our mission is to provide precise viewership data and promote the power of television with a commitment to excellence, vision and adaptability.