Arlington, Virginia – PBS and WGBH announced that the January 5 premiere of Downton Abbey, Season 4 on MASTERPIECE had an average audience of 15.5 million viewers, further solidifying the episode as the highest-rated drama premiere in PBS history. (Nielsen Live+7 data, 9.7 household rating.) This marks a 52 percent growth in audience compared to the 10.2 million average audience first reported in the Nielsen Fast National data. The fourth season premiere of the Emmy®, … [Read more...] about “Downton Abbey” ​S4’s U.S. premiere ​reaches 15.5 million ​viewers