Fig. 6.

Culturable bacterial species distribution in genus level of samples collected by the HighBioTrap and the BioStage in (a) outdoor and (b) indoor environment. Different colors in the plot represent different species names corresponding to the text on the right side, and the length of the color block represents the relative abundance of the specie. (Indoor environment has different humidity level, bacterial aerosol size distributions and also species structures compared to outdoor environments.) (For interpretation of the references to color in this figure legend, the reader is referred to the web version of this article.).