Table 3.

Features of the selected datasets. The columns report the amount of fingerprints, the number of Access Points (APs), the size of the area where fingerprints where collected, and the number of fingerprints per reference (or measurement) point.

Dataset	# Fingerprints	# APs	Area	f/r.p.
Sigfox [19,39]	14,378	84	∼53 km${}^2$	1
LoRaWAN v1.3 [19,39]	130,430	72	∼53 km${}^2$	1
LoRaWAN v1.3 reduced [12,19,39,40]	55,375	72	∼53 km${}^2$	1
DSI [26] (radio map, traj.)	(1369, 348)	157	100 m × 18 m	(6, 1)
DSI reduced (radio map, traj.)	(230, 348)	157	100 m × 18 m	(1, 1)
MAN [24,25]	14,300	28	15 m × 36 m	110
MAN reduced	166	28	15 m × 36 m	1