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Federal
2008 average fine particulate matter (PM2.5) concentrations by county
U.S. Environmental Protection Agency —
This file provides annual average concentration of PM2.5, by county, for the year 2008. Definition of each variable is provided in the first row for each column. This... -
Federal
NEST preterm birth air pollution dietary factors 2023MAY
U.S. Environmental Protection Agency —
Data dictionary and code files associated with analysis of air pollution and dietary factor interactions with preterm birth. This dataset is associated with the...