Assessment of Smartphone Positioning Data Quality in the Scope of Citizen Science Contributions

Table 4

A summary of the datasets per campaign.

	(i)	(ii)	(iii)	(iv)
Number of GNSS locations	3533752	3549218	1365198	1600384
Number of multimodal trips	2251	2463	1315	1803
Number of trip segments	2394	2738	1814	1905
Number of devices	40	18	19	380
Travelled kilometres	24737	22695	11063	12864
Data collection period	Jan–Sep 2014	Feb 2013–Jul 2014	Mar–Jun 2014	Jul 2014–Oct 2015
Application name	Connect	Connect	Connect	Routecoach
Type of logging	active	active	active	active
Sampling frequency	1 Hz	1 Hz	1 Hz	1 Hz
Sensor	GNSS	GNSS	GNSS	GNSS/FUSED^1

locations are not included in this study; a FUSED location is an estimation of the location based on the combination of various sensors such as WIFI, cell networks, GNSS, and Bluetooth.