Variable
acenaphthene
acenaphthylene
arsenic
benz_a_anthracene
benzo_a_pyrene
benzo_b_fluoranthene
benzo_ghi_perylene
benzo_j_fluoranthene
benzo_k_fluoranthene
cadmium
chromium
chrysene
copper
dibenzo_ah_anthracene
fluoranthene
fluorene
inden_123cd_pyrene
naphthalene
nickel
nitrate_ug_N_per_m3
nitrate_ug_per_m3
phenanthrene
pm10_mass
pm25_mass
pyrene
sulphate_total_ug_S_per_m3
sulphate_total_ug_per_m3
zinc