. Author manuscript; available in PMC: 2012 Apr 1.

Published in final edited form as: Environ Sci Technol. 2011 Feb 25;45(7):2945–2950. doi: 10.1021/es1033876

Table 1.

Concentration (μg/m³) of inhalable particulate in 55 homes by type of flooring.

Sampling Method by Floor Covering	N	Arithmetic Mean	Geometric Mean	Median	Min.	Max.	Std. Dev.
Stationary
Bare Floor	21	30.7	28.0	25.1	10.9	60.9	13.5
Rug/Carpet	34	41.5	33.6	32.9	2.2	136.5	27.2
PIPER
Bare Floor	21	34.6	30.4	37.7	6.6	63.3	15.8
Rug/Carpet	34	95.6	73.8	68.4	23.7	378.6	85.5