The Public Broadcasting Service (PBS) is the primary non-profit television service, with 349 member public broadcasters. News and public affairs programs include "PBS NewsHour", "Frontline", and "Washington Week". In September 2012, PBS rated 88% above CNN in public affairs programming, placing it competitively with cable news outlets but far behind private broadcasters ABC, CBS, and NBC. Due to its local and non-profit nature, PBS does not produce 24-hour news, but some member stations carry MHz WorldView, NHK World, or World as a digital subchannel.