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. Author manuscript; available in PMC: 2016 Jan 1.
Published in final edited form as: Atmos Environ (1994). 2015 Jan 1;100:159–166. doi: 10.1016/j.atmosenv.2014.10.058

Figure 2.

Figure 2

Sulfur to sulfur-sulfate ratios as the selected EPA sites: Fresno, California; Davenport, Iowa; Kansas city, Missouri; Ste. Genevieve Co., Missouri. Error bars are the uncertainties for the ratios computed from error propagation method. Any ratios with error bars crossing the unity (grey dashed line) are removed.