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. 2022 Feb 17;22(4):1578. doi: 10.3390/s22041578

Table 7.

Comparison of the Kestrel with related work.

Paper	Pollutants	Sensors	Positioning System	Online Visualization
				Video	On a Map		Time Graphs
				Video	Location	Quantity	Time Graphs
[11]	IAQ, CO $_{2}$ , TVOC	BME688, SGP30	no	no	no	none	yes
[12]	fire smoke, CO $_{2}$ , ammoniac, benzene, alcohol	MQ-135	no	no	no	none	no
[24]	H $_{2}$	MQ-8, BME680	no	no	no	none	yes
[25,26]	PM2.5	DC1700	GPS	no	no	none	yes
[18,19]	CO, NO, SO $_{2}$ , O $_{3}$ , PM2.5, PM10	unknown	GPS	no	no	none	no
[20]	VOC	MQ-135	no	no	no	none	yes
[21]	AQI, PM2.5	BME680, OPC-N3	GPS	no	no	none	no
[13]	CO, CO $_{2}$ , NO, NO $_{2}$ , O $_{2}$ , O $_{3}$	N.A.	GPS	no	no	none	no
[27]	PM1, PM2.5, PM10	OPC-N2, NO2-B43F	GPS, GLONASS, BeiDou	no	no	none	yes
[14]	O $_{2}$ , CO $_{2}$	LuminOx, K30 SE-0018	GPS	no	no	none	no
This Paper	NH $_{3}$ , NO $_{x}$ , alcohol, benzene, smoke, CO $_{2}$ , PM2.5	MQ-135, HM3301	GPS, GLONASS, BeiDou	yes	yes	concentration of exhaust gases	yes