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      Average percent impervious National Land Cover Dataset (NLCD) Contiguous USAverage percent impervious National Land Cover Dataset (NLCD) Tract Contiguous US 2016 to 2019
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      Vacant Buildings & Land CT2020Vacant Buildings & Land by Tract 2020 Philadelphia 2022
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      Vacant Buildings & Land CT2010Vacant Buildings & Land by Tract 2010 Philadelphia 2016 to 2022
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      External conditions from parcel dataExternal conditions from parcel data by Tract 2010 Philadelphia 2011 to 2017