Correcting Air-Pressure Data Collected by MEMS Sensors in Smartphones

Table 9

Data collected by smartphones and pertinent details.

Number	Collector item	Unit	Description	Data example	Value type
1	REQ_TIME	YYYY-MM-DD hh:mm	Connection time for transfer	2014-04-16 12:17	Numeric
2	SEQ	Serial Number	Serial number (assigned by the server)	73792	Numeric
3	FINGERPRINT	Phone Information	PDA (personal digital assistant) Information; (23 models)	samsung/ks01ltektt/ks01ltektt:4.3/JSS15J/; E330KKKUBML1:user/release-keys	Character
4	PROVIDER	—	Transfer method	gps (or network)	Character
5	ACCURACY	—	Inversely proportional	37	Numeric
6	Observation TIME	UTC Million TIME	Observation time	1397618269000	Numeric
7	LATITUDE	Degree	Latitude	37.50412752	Numeric
8	LONGITUDE	Degree	Longitude	126.8757452	Numeric
9	Observation SPEED	m/sec	Speed	0	Numeric
10	Observation ALTITUDE	M	Altitude	241	Numeric
11	PRESSURE SENSOR_INFO	—	Product type of air pressure sensor	Barometer SensorSTMicroelectronics1.01	Character
12	PRESSURE	hPa	Air pressure	1014.08936	Numeric
13	HUMIDITY SENSOR_INFO	—	Product type of humidity sensor	SHTC1 relative humidity sensorSensirion0.041	Character
14	HUMIDITY	%	Humidity	55.833256	Numeric
15	TEMPERATURE SENSOR_INFO	—	Product type of temperature sensor	SHTC1 ambient temperature sensorSensirion0.011	Character
16	TEMPERATURE	°C	Temperature	20.518414	Numeric
17	USER_ID	—	User ID	4d60d5a821c907f0dcf1e20c45aaf108	Character