Variable
precipitation_amount
ammonium_mg_N_per_l
ammonium_mg_per_l
cadmium
calcium
chloride
conductivity
lead
magnesium
manganese
nickel
nitrate_mg_N_per_l
nitrate_mg_per_l
pH
potassium
sodium
sulphate_corrected_mg_S_per_l
sulphate_corrected_mg_per_l
sulphate_total_mg_S_per_l
sulphate_total_mg_per_l
zinc
HCB
PCB_101
PCB_118
PCB_138
PCB_153
PCB_180
PCB_28
PCB_52
acenaphthene
acenaphthylene
alpha_HCH
anthracene
benz_a_anthracene
benzo_a_pyrene
benzo_b_fluoranthene
benzo_ghi_perylene
benzo_k_fluoranthene
beta_HCH
dibenzo_ah_anthracene
fluorene
inden_123cd_pyrene
naphthalene
phenanthrene
pp_DDD
pp_DDE
pp_DDT
pyrene