Air pollution data: A dataset gathered through a crowd sensing platform

The data is structured in 2 CSV files. The first file contains the actual data - measures for a certain pollutant or atmospheric type of data from an identified sensor at a specific time point. Each row in this file represents one measurments, containing 4 columns: • SensorId - a unique identifier (string) of the sensor where the measure- ment came from • Type - the type of the measurement (pm10, pm25, co, humidity and so on) • Value - the value that was measured • Stamp - the timestamp of when exactly was the measurement recorded The second file is where the metadata for the sensors is stored. This contains of 6 columns: • SensorId - a unique identifier (string) of the sensor • Type - the type ID of the sensor • Position - geographical coordinates of where the sensor is placed (lati- tude, longitude) • Description - short description or name of the sensor • Comments - additional comments regarding the sensor • Status - the status of the sensor