Historic data from the Yorkton station from January 1, 2017 to January 1, 2018. Measures SO2, H2S, O3, NO, NO2, NOX, PM25, temperature, RH, air pressure, wind speed, wind direction, and precipitation. Please note, there are large gaps in data as the stations were installed part way through the year and some of the analyzers were not functioning properly initially, requiring the data to be invalidated.