This data set provides the biological endpoints collected from individual animals that culminated into a published paper. This dataset is associated with the following publication: Snow, S., C. Gordon , V. Bass, M. Schladweiler , A. Ledbetter , K. Jarema , P. Phillips , A. Johnstone , and U. Kodavanti. Age-related differences in pulmonary effects of acute and subchronic episodic ozone exposures in Brown Norway rats. INHALATION TOXICOLOGY. Informa Healthcare USA, New York, NY, USA, 28(7): 313-23, (2016).