Ground based in situ observations of TEOM_FDMS at Auchencorth Moss (GB0048R). 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: pm10_mass in pm10 (mass_concentration_of_pm10_ambient_aerosol_particles_in_air), pm10_mass in pm10_non_volatile (mass_concentration_of_pm10_mass_in_refractory_pm10_in_air), pm10_mass in pm10_volatile (mass_concentration_of_pm10_mass_in_non_refractory_pm10_in_air), pm25_mass in pm25 (mass_concentration_of_pm2p5_ambient_aerosol_particles_in_air), pm25_mass in pm25_non_volatile (mass_concentration_of_pm25_mass_in_refractory_pm2p5_in_air), pm25_mass in pm25_volatile (mass_concentration_of_pm25_mass_in_non_refractory_pm2p5_in_air)