2017 No https://pubmed.ncbi.nlm.nih.gov/28039631/ Yang, Hao-Jan Asia Modeling Elementary (K-5) Particulate Matter (PM) Significant relationships (p < 0.01) were found between outdoor PM10 concentrations at Lunbei’s air quality monitoring station and the two elementary schools. The outdoor PM10 concentrations at the monitoring station and the schools’ indoor PM10 concentrations also showed significant correlations. This study also established a relationship between the outdoor and indoor concentrations of PM10 and metals in the schools.