Fig. 4

Comparison of pulmonary function (FVC, FEV1, FEV1/FVC, and PEFR) in the adults and correlation of pulmonary function with sleeping area PM2.5 exposure in winter and summer. Spearman correlation, r: Correlation coefficient
Comparison of pulmonary function (FVC, FEV1, FEV1/FVC, and PEFR) in the adults and correlation of pulmonary function with sleeping area PM2.5 exposure in winter and summer. Spearman correlation, r: Correlation coefficient