The purpose of this study was to investigate the characteristics of air quality using data from which obtain local air quality monitoring system for cohort study in Chungju, Korea. We analyzed the concentration data of NO2, SO2, and PM10 in Chungju and industrial cities in 2006. We compared a industrial area with a cohort study area using by bicluster algorithm. In the case of SO2, the rate of the cluster time was 10～60% and the cluster time number of two areas was similar. In the case of NO2 and PM10, the number of cluster time between a industrial area and cohort study area was clearly different.

• 위성승(국립환경과학원 환경역학과, 성균관대학교 통계학과) | Seongseung Wee
• 김재훈(국립환경과학원 환경역학과) | Jaehoon Kim Corresponding Author
• 안치경(성균관대학교 통계학과) | Chikyung Ahn
• 최병수(한성대학교 멀티미디어공학과) | Byongsu Choi
• 김대선(국립환경과학원 환경역학과) | Dae-seon Kim