Design and Development of a Flexible, Plug-and-Play, Cost-Effective Tool for on-Field Evaluation of Gas Sensors

Table 6

Results for the sensors involved in the outdoor experiment related to the calibration and validation datasets.

Sensor/model	Calibration			Validation
	R^2	MAE	SD	R^2	MAE	SD	SLOPE	INTERCEPT
NO2B43F(1)/LR	0.377	2.29	3.069	0.357	2.382	2.893	0.859	0.461
NO2B43F(1)/MLR	0.465	2.164	2.844	0.32	3.587	3.397	0.547	5.388
NO2B43F(2)/LR	0.369	2.239	3.088	0.466	2.346	2.632	1.137	-2.468
NO2B43F(2)/MLR	0.61	1.856	2.426	0.507	2.461	2.62	0.781	0.515
OXB431(1)/LR	0.47	4.736	6.491	0.455	5.201	6.681	1.05	-1.809
OXB431(1)/MLR	0.643	4.147	5.33	0.373	6.591	7.278	0.81	9.28
OXB431(2)/LR	0.474	4.624	6.471	0.614	7.071	5.746	1.205	-13.571
OXB431(2)/MLR	0.666	3.483	5.154	0.668	8.13	5.412	0.834	-1.124
SP-61(1)/LR	0.427	5.153	6.75	0.282	5.974	8.169	0.629	10.831
SP-61(1)/MLR	0.484	4.624	6.408	0.344	5.628	7.79	0.667	10.268
SP-61(2)/LR	0.434	5.067	6.677	0.3	5.724	7.967	0.664	10.357
SP-61(2)/MLR	0.492	4.557	6.355	0.361	5.546	7.637	0.688	10.228