Nanoaerosols Including Radon Decay Products in Outdoor and Indoor Air at a Suburban Site

Figure 10

Time run of: (a) total number concentration of general aerosol particles (𝐶^Ngen(tot)) and geometric mean values of their diameters (𝑑_GM), (b) number fraction of particles smaller than 10 nm (𝑥_gen(<10)) and smaller than 20 nm (𝑥_gen(<20)), (c) activity concentration of radon (𝐶^ARn) and equilibrium factor between Rn and RnDP (𝐹), and (d) equilibrium equivalent activity concentration of radon decay products (𝐶^ARnDP) and activity fraction of the unattached RnDP (𝑓^un), in indoor air from October 28 to January 6.