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The PWD-based relative park spatial accessibility to parks by census tract in the U.S. Darker green means better potential spatial access to parks for local residential populations Note: census tract level PWD was classified into five groups according to their quintiles by NCHS county level urban-rural classification scheme: 1) large central metro, 2) large fringe metro, 3) medium metro, 4) small metro, 5) micropolitan, and 6) non-core rural counties.
