Details of columns in the datasheets,, ,Time,Date and time of the data recording ,BATT,Internal battery (%) ,LIGHT,Light (lx) ,TEMP,Internal temparature (?) ,HUM,Internal humidity (%) ,NOISE_A,Ambient noise (dBA) ,PRESS,Barometric pressure (k Pa) ,EXT_PM_1,PM1 µg/m3 ,EXT_PM_25,PM2.5 µg/m3 ,EXT_PM_10,PM10 µg/m3 ,EXT_TEMP,Air temperature near the Alphasense Gas sensors (?) ,EXT_HUM,Relative humidity near the Alphasense Gas sensors (%) ,DALLAS_TEMP,External air temperature (?) ,CO_PRE,Carbon monoxide (mV) ,NO2_PRE,Nitrogen dioxide (mV) ,O3_PRE,Ozone (mV)