Sources: (On Air) Spring 2018 ACT 1 based on Nielsen Nationwide, Persons 12+, Mon.-Sun. © 2018 The Nielsen Company. May not be quoted or reproduced without the prior written permission of Nielsen. (Online and apps) Google Analytics, 3-month average, October-December 2018. (Podcasts) Podtrac, November 2018. (Discuss content) NPR Impact Study, NPR Listens, January 2017. Refers to weekly listeners.