More than 7 million viewers watched Ken BurnsThe Roosevelts docu-series each night, PBS says, citing preliminary ratings projections based on Nielsen Live + Same Day metered market ratings. That number is expected to go up with delayed DVR viewing, etc.

Meanwhile, the 14-hour The Roosevelts is on track to be Burns’ most streamed series to date on PBS. PBS made all 14 hours of The Roosevelts available for streaming though PBS stations’ video sites, pbs.org/theroosevelts, and PBS station-branded digital platforms, including, ROKU, Apple TV, Xbox and Amazon Fire TV. PBS noted there’s a week of streaming yet to go, and there have been more than one million streams of The Roosevelts full episodes. More than 30 percent of the streams came from OTT.

*The project, about Teddy, Eleanor and Franklin Delano Roosevelts, was big on social media as well, ranking in Nielsen Social’s Daily Top 5 ranking for series and specials, on three out of the seven days it aired new episodes. The program generated more than 3.6 million Twitter TV Impressions over the course of the week, according to Nielsen.

The DVD and Blu-ray of The Roosevelts are ranked as the Amazon #1 bestseller in the documentary category today; the project also is the best-selling nonfiction TV series on iTunes since its release on September 9, and went as high as #4 in overall rankings for top-selling TV shows.