Figure 1.
Percentages (%) and Concentrations (µg/m3) of Indoor PM2.5 from Ambient and Non-Ambient Origins across Quantiles of the Exposure Distribution by Homeownership and Multifamily Status, HOME Study, Chelsea, MA 2016-2017
Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.