Fig. 1

Geographical distribution of PM2.5, PM10 concentration, and CES-D 10 score averaged of 2016–2020. The map was presented for PM2.5 (A), PM10 (B), and CES-D 10 score (C) in South Korea. PM2.5: particulate matter with an aerodynamic diameter ≤ 2.5 μm; PM10: particulate matter with an aerodynamic diameter ≤ 10 μm; CES-D: Center for Epidemiology Studies of Depression scale