Data Tables
Note: EPA no longer updates this information, but it may be useful as a reference or resource.
Pollutant-Specific Tables:
View (or download) a table by selecting the format (Adobe pdf or Excel) and then the pollutant from the pull-down lists below. The table contains ambient concentration distributions (i.e., as percentiles) as well as a breakdown of ambient concentrations into
major,
area,
onroad mobile and
nonroad mobile sources as well as
background concentrations for the pollutant you select. |
| Download a Pollutant-Specific Table |
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State Summary Tables:
View (or download) a table by selecting the format (Adobe pdf or Excel) and then the State from the pull-down lists below. The table contains ambient concentration distributions (i.e., as percentiles) as well as a breakdown of ambient concentrations into
major,
area,
onroad mobile and
nonroad mobile sources as well as
background concentrations
for each pollutant for every county in the State you selected. |
| Download a State Summary Table: |
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