The Download Data Files page has been updated. Any new or changed data reported to EPA since the last update (in February 2014) has been updated in the files. You can use the “as of” date on the file tables to determine if a file has been updated. Also, we’ve added the blanks data. (Blanks are empty cannisters that are measured for speciation quality assurance reasons). We plan to update these files twice a year - in May and November.
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