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. 2019 May 7;127(5):057001. doi: 10.1289/EHP3325

Figure 2.

Figure 2a is a box-and-whisker plot, plotting O sub 3 exposure (y-axis) across participants’ residential locations (x-axis). Figure 2b is a line graph plotting O sub 3 exposure (y-axis) across years from 2000 to 2012 at intervals of 2 (x-axis) for participants’ residential locations.

Ambient ozone (O3) exposure estimated at the participants’ residential locations. (A) Distribution of O3 concentrations at baseline by study regions, and (B) mean O3 estimated concentrations at all participants’ homes from 1999 to 2013. Boxes cover the 25–75th percentile (interquartile range; IQR) with a center line for the median concentration. Whiskers extend to the highest observation within 3 IQRs of the box, with more extreme observations shown as points. Note: W-S, Winston-Salem; NYC, New York; LA, Los Angeles.