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Table 5 Concentrations of PM10 and PM2.5 in indoor and outdoor air of residences in Taiyuan [17]

From: Indoor Air Pollution and Its Control in China

Sampling time Sampling site Sample number Average concentration (mg/m3)
PM10 PM2.5
Heating period Indoor 438 0.327 0.107
Outdoor 319 0.547 0.123
Non-heating period Indoor 485 0.239 0.089
Outdoor 457 0.321 0.109