PAHs (polycyclic aromatic hydrocarbons) at Zeppelin mountain (Ny-Ålesund). These measurements are gathered as a part of the following projects AMAP, CAMP, EMEP, NILU and they are stored in the EBAS database (http://ebas.nilu.no/). Parameters measured are: 1-methylnaphthalene in air+aerosol (mass_concentration_of_1_methylnaphthalene_in_aerosol), 1-methylphenanthrene in air+aerosol (mass_concentration_of_1_methylphenanthrene_in_aerosol), 2-methylanthracene in air+aerosol (mass_concentration_of_2_methylanthracene_in_aerosol), 2-methylnaphthalene in air+aerosol (mass_concentration_of_2_methylnaphthalene_in_aerosol), 2-methylphenanthrene in air+aerosol (mass_concentration_of_2_methylphenanthrene_in_aerosol), 3-methylphenanthrene in air+aerosol (mass_concentration_of_3_methylphenanthrene_in_aerosol), 9-methylphenanthrene in air+aerosol (mass_concentration_of_9_methylphenanthrene_in_aerosol), acenaphthene in air+aerosol (mass_concentration_of_acenaphthene_in_aerosol), acenaphthylene in air+aerosol (mass_concentration_of_acenaphthylene_in_aerosol), anthanthrene in air+aerosol (mass_concentration_of_anthanthrene_in_aerosol), anthracene in air+aerosol (mass_concentration_of_anthracene_in_aerosol), benz_a_anthracene in air+aerosol (mass_concentration_of_benz_a_anthracene_in_aerosol), benzo_a_fluoranthene in air+aerosol (mass_concentration_of_benzo_a_fluoranthene_in_aerosol), benzo_a_fluorene in air+aerosol (mass_concentration_of_benzo_a_fluorene_in_aerosol), benzo_a_pyrene in aerosol (mass_concentration_of_benzo_a_pyrene_in_dry_aerosol_particles_in _air), benzo_b_fluorene in air+aerosol (mass_concentration_of_benzo_b_fluorene_in_aerosol), benzo_bjk_fluoranthenes in air+aerosol (mass_concentration_of_benzo_bjk_fluoranthenes_in_aerosol), benzo_e_pyrene in air+aerosol (mass_concentration_of_benzo_e_pyrene_in_aerosol), benzo_ghi_fluoranthene in air+aerosol (mass_concentration_of_benzo_ghi_fluoranthene_in_aerosol), benzo_ghi_perylene in air+aerosol (mass_concentration_of_benzo_ghi_perylene_in_aerosol), biphenyl in air+aerosol (mass_concentration_of_biphenyl_in_aerosol), chrysene_triphenylene in air+aerosol (mass_concentration_of_chrysene_triphenylene_in_aerosol), coronene in air+aerosol (mass_concentration_of_coronene_in_aerosol), cyclopenta_cd_pyrene in air+aerosol (mass_concentration_of_cyclopenta_cd_pyrene_in_aerosol), dibenzo_ac_ah_anthracenes in air+aerosol (mass_concentration_of_dibenzo_ac_ah_anthracenes_in_aerosol), dibenzo_ae_pyrene in air+aerosol (mass_concentration_of_dibenzo_ae_pyrene_in_aerosol), dibenzo_ah_pyrene in air+aerosol (mass_concentration_of_dibenzo_ah_pyrene_in_aerosol), dibenzo_ai_pyrene in air+aerosol (mass_concentration_of_dibenzo_ai_pyrene_in_aerosol), dibenzofuran in air+aerosol (mass_concentration_of_dibenzofuran_in_aerosol), dibenzothiophene in air+aerosol (mass_concentration_of_dibenzothiophene_in_aerosol), fluoranthene in air+aerosol (mass_concentration_of_fluoranthene_in_aerosol), fluorene in air+aerosol (mass_concentration_of_fluorene_in_aerosol), inden_123cd_pyrene in air+aerosol (mass_concentration_of_inden_123cd_pyrene_in_aerosol), naphthalene in air+aerosol (mass_concentration_of_naphthalene_in_aerosol), perylene in air+aerosol (mass_concentration_of_perylene_in_aerosol), phenanthrene in air+aerosol (mass_concentration_of_phenanthrene_in_aerosol), pyrene in air+aerosol (mass_concentration_of_pyrene_in_aerosol), retene in air+aerosol (mass_concentration_of_retene_in_aerosol)