Ground based in situ observations of low_vol_sampler at Harwell (GB0036R). 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: arsenic in pm10 (mass_concentration_of_arsenic_in_pm10_in_air), cadmium in pm10 (mass_concentration_of_cadmium_in_pm10_in_air), chromium in pm10 (mass_concentration_of_chromium_in_pm10_in_air), cobalt in pm10 (mass_concentration_of_cobalt_in_pm10_in_air), copper in pm10 (mass_concentration_of_copper_in_pm10_in_air), iron_57 in pm10 (mass_concentration_of_iron_in_pm10_in_air), lead in pm10 (mass_concentration_of_lead_in_pm10_in_air), manganese in pm10 (mass_concentration_of_manganese_in_pm10_in_air), nickel_60 in pm10 (mass_concentration_of_nickel_in_pm10_in_air), selenium in pm10 (mass_concentration_of_selenium_in_pm10_in_air), vanadium in pm10 (mass_concentration_of_vanadium_in_pm10_in_air), zinc in pm10 (mass_concentration_of_zinc_in_pm10_in_air)