Variable
ammonia
chloride
magnesium
nitrate_ug_N_per_m3
nitrate_ug_per_m3
nitric_acid
potassium
sodium
sulphate_corrected_ug_S_per_m3
sulphate_corrected_ug_per_m3
sulphate_total_ug_S_per_m3
sulphate_total_ug_per_m3
sulphur_dioxide
sum_ammonia_and_ammonium
sum_nitric_acid_and_nitrate