Descriptive statistics and spatial differences for the 10 VOCs (µg/m3) monitored at the four local-source dominated sites in the study.

aDifferences within the four sampling sites were conducted using the Kruskal-Wallis test and pairwise multiple comparison tests (Wilcoxon rank-sum test) were followed, if the difference was significant (pbDifferent letters mean significant differences (pAbbreviation in the table: DCM: Dichloromethane, EB: Ethylbenzene, MEK: Methyl Ethyl Ketone, p-DCB: p-Dichlorobenzene.