title: Indoor radon maps of the United States.
abstract: A recently published compilation of average radon levels in 1,729 U.S. counties with standard errors of approximately 20% is used to generate maps exhibiting these results and showing correlations over multicounty areas. Several large areas and numerous smaller areas with high radon levels are identified.
authors.affiliation: University of Pittsburgh, PA 15260.
authors.forename: B L
authors.initials: BL
authors.lastname: Cohen
authors.forename: C A
authors.initials: CA
authors.lastname: Stone
authors.forename: C A
authors.initials: CA
authors.lastname: Schilken
mesh_terms: D016902:Air Pollution, Indoor; D008377:Maps as Topic; D011886:Radon; D014481:United States
chemical_list: D011886:Radon