Fig. 1

Air pollutants-mortality curves modeled using natural cubic spline functions BC: black carbon; Percentage changes were assessed on different lag days: lag 0 for O3, lag 7 for PM2.5, PM10, NO2 and BC
Air pollutants-mortality curves modeled using natural cubic spline functions BC: black carbon; Percentage changes were assessed on different lag days: lag 0 for O3, lag 7 for PM2.5, PM10, NO2 and BC