Particle and aerosol characteristics. A) Particle mobility and aerodynamic number size distributions measured with SMPS. Size bin concentrations are represented as mean (o), median (x) and standard deviation (box). Solid line represents mean of multi log-normal function and dotted lines are means of single modes. Measurements and fitting were done during steady-state condition. B) Multi log-normal fit parameters for Fig 2A. particle size distributions and mean particle concentration measured by CPC . Dpg, i, Ni and σg, i are geometric mean diameter, particle concentration and geometric standard deviation of mode i, respectively, and Ntot is total particle concentration of size distribution.