The Effects of Outdoor Source on Pollution Characteristics and Dynamic Changes of Particulate Matter in an Office

Table 3

Penetration factor of particles with different particle sizes under each outdoor condition.

Outdoor concentration (μg·m^−3)	Penetration factor,
	0.3–0.5 μm	0.5–1 μm	1–2.5 μm	2.5–5 μm	5–10 μm	>10 μm
200–300	0.889	0.807	0.376	0.326	0.200	0.068
300–400	0.920	0.716	0.503	0.282	0.158	0.149
400–500	0.613	0.515	0.483	0.272	0.132	0.071
500–600	0.744	0.571	0.524	0.425	0.287	0.165
600–700	0.780	0.627	0.506	0.406	0.302	0.288