Table 4.

Confusion matrix using four stations’ signal strength with KNN classifier.

Environment	Deep Indoors	Semi-Outdoors	Light Indoors	Open Outdoors
Deep Indoors	97.1%	0	2.9%	0
Semi Outdoors	0	98.6%	0	1.4%
Light Indoors	6.5%	0	93.5%	0
Open Outdoors	0	0	0	100%