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. 2020 Jan 31;15(1):e0228393. doi: 10.1371/journal.pone.0228393

Table 2. Average exposure concentrations of pollutants (PM2.5, NO and NO2), temperature and relative humidity measured inside the chamber in real time for the experimental group exposed for 60 days.

Parameters Time
60 days
Mean SD Minimum - Maximum
PM2.5 (μg/m3) 577 112 317 - 867
NO (μg/m3) 16 18 1 - 72
NO2 (μg/m3) 141 243 0 - 1120
Temperature (°C) 21 4 14 - 30
Humidity (%) 69 9 38 - 83

PM2.5, particulate matter with aerodynamic diameter less than 2.5 micrometers; NO, nitric oxide; NO2, dioxide nitrogen.