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

Table 2

Minimum and maximum values, geometric means, and geometric standard deviations for the total number concentration of general aerosol (𝐶^𝑁_gen(tot)), geometric mean of number size distribution of general aerosol (𝑑_GM), number fractions of particles smaller than 10 nm (𝑥_gen(<10)) and smaller than 20 nm (𝑥_gen(<20)), radon activity concentration (𝐶^𝐴_Rn), equilibrium equivalent concentration of radon short-lived decay products (𝐶^𝐴_RnDP), equilibrium factor between radon and radon short-lived decay products (𝐹), activity fraction of the unattached radon short-lived decay products (𝑓^un), and number fraction of the unattached radon short-lived decay products (𝑥^un), for the entire period of measurements indoors (28–31 October, 21-22 November, and 5-6 January), only when the door and window were closed and without any human activity.

Parameter	28 October–6 January
	min	max	GM	GSD
𝐶^Ngen(tot)/cm^−3	1840	13260	5120	1.50
𝑑GM/nm	22	87	57	1.24
𝑥gen(<10)	0.001	0.30	0.01	2.63
𝑥gen(<20)	0.004	0.59	0.08	2.08
𝐶^ARn/Bq m^−3	28	834	229	1.96
𝐶^ARnDP/Bq m^−3	24	278	101	1.85
F	0.24	0.67	0.43	1.24
𝑓^un	0.09	0.28	0.16	1.30
𝑥^un	0.08	0.36	0.17	1.45