Characteristics of study cities in Japan and Korea.

* SPM was converted with conversion factor of 1.16 to PM10 for Japanese cities.† Relevant prefecture data was used for Japanese cities.Characteristics of study cities in Japan and Korea.* 针对日本城市，以1.16的转换系数将悬浮颗粒物（Suspended Particulate Matter，SPM）转换为PM10。† 日本城市采用对应都道府县的相关监测数据。本研究涵盖日本与韩国研究城市的特征信息。