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. 2016 Dec 2;13(12):1200. doi: 10.3390/ijerph13121200

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© 2016 by the authors; licensee MDPI, Basel, Switzerland.

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Mean hourly air quality measured from platforms of ten top most popular stations with top ridership in the Taipei Rapid Transit system (TRTS) in Taiwan. (a) CO₂; (b) CO; (c) O₃; (d) humidity; (e) temperature; (f) PM₁₀; and (g) PM_2.5.

Mean hourly air quality measured from platforms of ten top most popular stations with top ridership in the Taipei Rapid Transit system (TRTS) in Taiwan. (a) CO₂; (b) CO; (c) O₃; (d) humidity; (e) temperature; (f) PM₁₀; and (g) PM_2.5.