Evaluation of Low-Cost Sensors for Ambient PM_2.5 Monitoring

Table 2

Coefficients of variation (CV, %) for tested PM sensors.

Sensor model	SDS011	ZH03A	PMS7003	PMS7003 “AE”	OPC-N2
CV, %	6.53	54.1/10.8	6.74	5.94	20.0

CV calculated only for two units for the period 21 August 2017–24 December 2017; CV calculated for three units after replacement of unit no. 1 and no. 2 on 08 January 2018.