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. 2020 Aug 7;242:117835. doi: 10.1016/j.atmosenv.2020.117835

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Fig. 7 — Spatial distribution of the number concentration of 2.5–11 nm size particles derived from the mobile deployments. Left: Mobile deployment 3 on March 23, 2020 covering the Raleigh metropolitan area including the Raleigh-Durham Airport (RDU). Right: Mobile deployment 4 on April 29, 2020 covering NCSU campus and areas surrounding the Jordan Hall measurement site. Also indicated are the locations of the NCSU utility plants (Cates, Yarborough, and Centennial).