Table 2. Particulate matter and DNA concentrations in samples collected inside and outside of pig houses¹⁾

Variable	I-NPH (n = 3)	I-FPH (n = 3)	O-PH (n = 3)
Particulate matter (µg/m3)2)	892.6 ± 200.1a	1,282.2 ± 509.9a	601.4 ± 239.8a
Metagenomic DNA (ng/m3)3)	531.3 ± 209.0a	481.3 ± 242.5a	280.3 ± 140.0a

Shown are the means ± standard error of the mean (n = 3).
Particulate matter contained PM_2.5, PM₁₀, and TSP.
Total community DNA was extracted from particulate matter.
Means with the same superscript letter represent non-significant differences.
I-NPH, inside the nursery pig house; I-FPH, inside the finishing pig house; O-PH, outside of the pig house; TSP, total suspended particles.