One season
26 series tell their whole story in a single season, among them Freaks and Geeks, North & South and One Day.
Two or three
46 series, including Derry Girls, The Newsroom and Foundation.
Four to six
The largest list with 63 series: Community, Downton Abbey, The Nanny and Schitt's Creek all live here.
Seven to nine
20 series, such as The West Wing, Gilmore Girls and Scrubs.
Ten or more
10 series, led by Grey's Anatomy with 23 seasons and ER with 15.
