We measured mass concentrations of PM1.0, PM2.5 and PM10 in the front and back of the classrooms, and
outdoors in the corridor, at an interval of 1s for three minutes using the aerosol monitor (TSI 8534 DustTrak). In the
experiment, the instrument was placed approximately 1.1 m from the ground, i.e. the height of the mouth of seated
people, with attention to avoid the direct influence of respiration.
We measured mass concentrations of PM1.0, PM2.5 and PM10 in the front and back of the classrooms, andoutdoors in the corridor, at an interval of 1s for three minutes using the aerosol monitor (TSI 8534 DustTrak). In theexperiment, the instrument was placed approximately 1.1 m from the ground, i.e. the height of the mouth of seatedpeople, with attention to avoid the direct influence of respiration.
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