Ground based in situ observations of bulk_sampler at Chilbolton Observatory (GB1055R). 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: 5-methylchrysene in wetdep (tendency_of_atmosphere_mass_content_of_5_methylchrysene_due_to_wet_deposition), benz_a_anthracene in wetdep (tendency_of_atmosphere_mass_content_of_benz_a_anthracene_due_to_wet_deposition), benzo_a_pyrene in wetdep (tendency_of_atmosphere_mass_content_of_benzo_a_pyrene_due_to_wet_deposition), benzo_b_fluoranthene in wetdep, benzo_e_pyrene in wetdep (tendency_of_atmosphere_mass_content_of_benzo_e_pyrene_due_to_wet_deposition), benzo_ghi_perylene in wetdep (tendency_of_atmosphere_mass_content_of_benzo_ghi_perylene_due_to_wet_deposition), benzo_j_fluoranthene in wetdep (tendency_of_atmosphere_mass_content_of_benzo_j_fluoranthene_due_to_wet_deposition), benzo_k_fluoranthene in wetdep (tendency_of_atmosphere_mass_content_of_benzo_k_fluoranthene_due_to_wet_deposition), chrysene in wetdep (tendency_of_atmosphere_mass_content_of_chrysene_due_to_wet_deposition), cyclopenta_cd_pyrene in wetdep (tendency_of_atmosphere_mass_content_of_cyclopenta_cd_pyrene_due_to_wet_deposition), dibenzo_ae_pyrene in wetdep (tendency_of_atmosphere_mass_content_of_dibenzo_ae_pyrene_due_to_wet_deposition), dibenzo_ah_anthracene in wetdep (tendency_of_atmosphere_mass_content_of_dibenzo_ah_anthracene_due_to_wet_deposition), dibenzo_ah_pyrene in wetdep (tendency_of_atmosphere_mass_content_of_dibenzo_ah_pyrene_due_to_wet_deposition), dibenzo_ai_pyrene in wetdep (tendency_of_atmosphere_mass_content_of_dibenzo_ai_pyrene_due_to_wet_deposition), dibenzo_al_pyrene in wetdep (tendency_of_atmosphere_mass_content_of_dibenzo_al_pyrene_due_to_wet_deposition), inden_123cd_pyrene in wetdep (tendency_of_atmosphere_mass_content_of_inden_123cd_pyrene_due_to_wet_deposition)