Figure 2
Correlation between VOC concentrations and Seoul Metro station depth in 2019 (a) and 2021 (b) (p < 0.001, r = 0.17 for (a); p < 0.001, r = 0.21 for (b)).
Figure 2 | Scientific Reports
Correlation between VOC concentrations and Seoul Metro station depth in 2019 (a) and 2021 (b) (p < 0.001, r = 0.17 for (a); p < 0.001, r = 0.21 for (b)).
