Table 4.

Analysis of grid size for Wi-Fi fingerprinting in the quantized world using 1-NN: Mean positioning error; Maximum positioning Error; Maximum expected error (MEE) and percentage of cases above the MEE.

Grid	Mean Error	Max. Error	Max. Expected Error	% Cases above the MEE
10.0 m	$3.706\pm 0.157$	$6.083\pm 0.070$	$7.071$	$0.800$
5.0 m	$1.825\pm 0.079$	$3.557\pm 0.040$	$3.536$	$1.675$
2.0 m	$0.787\pm 0.039$	$2.039\pm 0.019$	$1.414$	$6.924$
1.0 m	$0.493\pm 0.027$	$1.755\pm 0.015$	$0.707$	$20.222$
0.5 m	$0.370\pm 0.021$	$1.617\pm 0.011$	$0.354$	$47.243$
0.2 m	$0.318\pm 0.019$	$1.418\pm 0.004$	$0.141$	$82.348$
0.1 m	$0.312\pm 0.017$	$1.465\pm 0.004$	$0.071$	$94.240$