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Estimates of percent change in daily circulatory mortality associated with a 10 μg/m3 increase in particulate matter concentrations during days with heat waves. Note: PM10: particulate matter less than 10 μm in aerodynamic diameter; PM2.5: particulate matter less than 2.5 μm in aerodynamic diameter; ER: excessive risk. X-axis: lag0 to lag7 means a single-day lag. lag0–1 to lag0–7 means cumulative lag effect.
