Ground based in situ observations of passive_puf at Virolahti II (FI0017R). These measurements are gathered as a part of the following projects EMEP and they are stored in the EBAS database (http://ebas.nilu.no/). Parameters measured are: HCB in air (mass_concentration_of_hexachlorobenzene_in_air), PCB_101 in air (mass_concentration_of_polychlorinated_biphenyl_101_in_air), PCB_118 in air (mass_concentration_of_polychlorinated_biphenyl_118_in_air), PCB_138 in air (mass_concentration_of_polychlorinated_biphenyl_138_in_air), PCB_153 in air (mass_concentration_of_polychlorinated_biphenyl_153_in_air), PCB_180 in air (mass_concentration_of_polychlorinated_biphenyl_180_in_air), PCB_28 in air (mass_concentration_of_polychlorinated_biphenyl_28_in_air), PCB_52 in air (mass_concentration_of_polychlorinated_biphenyl_52_in_air), alpha_HCH in air (mass_concentration_of_alpha_hexachlorocyclohexane_in_air), anthracene in air (mass_concentration_of_anthracene_in_air), benz_a_anthracene in air (mass_concentration_of_benz_a_anthracene_in_air), benzo_a_pyrene in air (mass_concentration_of_benzo_a_pyrene_in_air), beta_HCH in air (mass_concentration_of_beta_hexachlorocyclohexane_in_air), chrysene in air (mass_concentration_of_chrysene_in_air), cis_CD in air (mass_concentration_of_cis_chlordane_in_air), cis_NO in air (mass_concentration_of_cis_nonechlor_in_air), fluoranthene in air (mass_concentration_of_fluoranthene_in_air), fluorene in air (mass_concentration_of_fluorene_in_air), gamma_HCH in air (mass_concentration_of_gamma_hexachlorocyclohexane_in_air), op_DDT in air (mass_concentration_of_op_dichlorodiphenyltrichloroethane_in_air), phenanthrene in air (mass_concentration_of_phenanthrene_in_air), pp_DDD in air (mass_concentration_of_pp_dichlorodiphenyldichloroethane_in_air), pp_DDE in air (mass_concentration_of_pp_dichlorodiphenyldichloroethylene_in_air), pp_DDT in air (mass_concentration_of_pp_dichlorodiphenyltrichloroethane_in_air), pyrene in air (mass_concentration_of_pyrene_in_air), trans_CD in air (mass_concentration_of_trans_chlordane_in_air), trans_NO in air (mass_concentration_of_trans_nonachlor_in_air)