Variable
ammonium_ug_per_m3
sulphate_corrected_ug_S_per_m3
ammonia
ammonium_ug_N_per_m3
sulphate_total_ug_S_per_m3
sodium
sulphate_corrected_ug_per_m3
sulphate_total_ug_per_m3
chloride
potassium
sulphur_dioxide
calcium