Table 2.

Stationary air concentration levels of total dust, inhalable dust, PM2.5, PM10, cobalt, and tungsten (mg m⁻³) and real-time measurements of particle surface area and particle number concentrations (n = 28)

Substance	n	AM	SD	GM	GSD	Range
Inhalable dust	28	0.03	0.015	0.027	1.6	<0.01–0.07
Co (inhal)	27a	0.00074	0.00092	0.0003	5.0	<0.0000041–0.0034
W (inhal)	27a	0.0056	0.0058	0.0027	4.0	<0.000081–0.017
Total dust	28	0.044	0.025	0.04	1.4	<0.03–0.15
Co (tot)	28	0.00071	0.0011	0.00024	5.3	<0.0000071–0.0053
W (tot)	28	0.0051	0.0058	0.0024	3.9	<0.00014–0.02
PM2.5	28	0.049	0.029	0.044	1.6	<0.042–0.14
Co (PM2.5)	28	0.000031	0.000037	0.000018	2.7	<0.000010–0.00016
W (PM2.5)	28	0.00039	0.00043	0.00028	2.1	<0.00021–0.0021
PM10	28	0.052	0.025	0.048	1.6	<0.042–0.12
Co (PM10)	28	0.00043	0.00048	0.00018	5.0	<0.000010–0.0017
W (PM10)	28	0.0032	0.0033	0.0017	3.6	<0.00023–0.011
Particle surface area (µm2·cm−3) mean	22	7.6	3.9	6.7	1.7	2.1–15
Particle surface area (µm2·cm−3) min	22	2.0	1.8	1	2.3	1–6.9
Particle surface area (µm2·cm−3) max	22	150	560	30	3.6	5.9–2700
Particle number (p·cm−3) mean	27	3000	1500	2700	1.6	1200–8000
Particle number (p·cm−3) min	27	1200	620	1000	1.8	220–2900
Particle number (p·cm−3) max	27	13 000	13 000	9400	2.3	2500–54 000

AM, arithmetic mean; n, number of measurements; GSD, geometric standard deviation; GM, geometric mean; SD, standard deviation; range: min–max.

^aOne filter was missing.