fig2

Figure 2. Box plot of OCP concentrations (pg·m^-3) in air samples from five Middle Eastern countries between January and October 2018. The 75th and 25th percentiles of the dataset are represented by the top and bottom ends of the box, respectively. The 99th and 1st percentiles are indicated by the extensions (“whiskers”) at either end of the box. The red dots represent outliers, which are individual data that exceed 1.5 times the interquartile range. The median concentrations in the boxes are indicated by the horizontal line. OCP: Organochlorine pesticide.