Data source of Air pollutants
As of 2010, there were 239 air quality monitoring stations for the entire Korea according to the city measurement network. Since air quality measurements from these stations were too coarse to represent geographic variations of air pollutants across the study area, we applied the Kriging method, a widely-used statistical approach for spatial interpolation, in order to obtain refined estimates of spatial distributions of air quality. The estimated results were then summarized to the spatial resolution of the local district and were used as an input for the dlnm modeling of this study.