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Geographic positions of National Atmospheric Deposition Program (NADP) monitoring sites referenced in Table S1 and bar charts showing the averages of weekly concentrations (mg L−1) of species measured in wet deposition for nine sites along the U.S. East Coast for March, April, May (MAM) and June, July, and August (JJA) for 2014–2018. On the right of each bar chart is the average (± standard deviation) value of pH.
