Analyses of daily ensembles of day

Using all available data from July 2011 to June 2013, a significant correlation (r = 0.64 to 0.82) between rural and urban Nevada sites was detected (Fig. SI 5). Rural sites in the southeast sector of Nevada (GBNP, WRVA, and CGSP) were better correlated with measurements from Clark County sites (Joe Neal and Jerome Mack) than vesicles in Washoe County sites (Reno3 and Sparks), whereas rural sites in northern Nevada (BISP, SFRA, and PAVA) showed a slightly better correlation with measurements from Washoe County sites (Fig. SI 5).