Recognizing Dew as an Indicator and an Improver of Near-Surface Air Quality

Table 2

Summary of removal efficiency (%) of total dissolved solids (TDS), PM_2.5, and PM₁₀ by dew in Changchun during the study period.

	Normal (n = 17)			Fog (n = 7)			Haze (n = 13)
	TDS	PM2.5	PM10	TDS	PM2.5	PM10	TDS	PM2.5	PM10
Mean ± SD
Max.	32.3	25.9	28.5	27.4	19.5	25.4	24.1	14.5	18.4
Min.	17.5	18.7	19.5	18.4	10.5	14.1	15.2	11.8	12.7