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Simple Example Given: PM2.5 concentration = 20 g/m Breakpoints: BP Lo = 12.1, BP Hi = 35.4, I Lo = 51, I Hi = 100 Calculation: I = [(100 51) / (35.4 12.1)] (20 12.1) + 51 = [49 / 23.3] 7.9 + 51 67.6 Result: AQI 68 Category: Moderate Theory & Engineering Applications The Science Behind the Air Quality Index The AQI puts pollutant concentrations onto a common scale0 to 500by using piecewise linear interpolation between breakpoints set by the EPA

Swan, PhD, Kenneth E

Curtis CE, DEsposito M

[7] In May 2020, the use of menthol as a characterizing flavor in cigarettes was prohibited, but not menthol flavored filters for hand rolled cigarettes

Heart Disease and Stroke Statistics2015 Update: A Report from the American Heart Association