Figure 3
From: Lifestyle practices that reduce seasonal PM2.5 exposure and their impact on COPD
Indoor PM2.5 concentrations compared with outdoor PM2.5 concentrations over 1 year by season according to lifestyle practices to reduce PM exposure. (A) In spring, six lifestyle practices were correlated with a significant difference. (B) In summer, five lifestyle practices were correlated with a significant difference. (C) In winter, seven lifestyle practices were correlated with a significant difference.
