Dust Particle Size Distributions during Spring in Yinchuan, China

Table 2

Statistical results from dust particles measurements in Yinchuan.

Observation time	Number of samples	Weather type	Maximum number concentration; (unit/cm^3)	Minimum number concentration; (unit/cm^3)	Average number concentration; (unit/cm^3)	Average mass concentration; (mg/m^3)
2014.03.17 08:00–11:40	45	Blowing sand	4510	5880	5440	19.8
2014.03.17 12:05–2014.03.18 01:00	156	Floating dust	5270	2030	3821	11.8
2014.03.27 05:40–10:50	63	Blowing sand	9480	4560	6724	16.9
2014.03.27 11:25–13:45	29	Floating dust	2700	1540	2211	5.2
2014.04.01 12:15–21:40	114	Background	1630	597	942	1.1
2014.04.24 08:00–18:45	130	Dust storm	11500	5770	8803	44.3
2014.04.24 19:10–21:30	29	Floating dust	5390	3480	4482	14.7
		Background	1630	597	942	1.1
Average value		Floating dust	5390	1540	3505	10.6
		Blowing sand	9480	4560	6082	18.4
		Dust storm	11500	5770	8803	44.3