Figure 12.
Heat maps of PM2.5 concentrations during the e-bike run at the outskirts of Mons on 6 August 2017: (a) Raw measurements of the on-board PM sensor; (b) Output of linear regression model 1; (c) Output of linear regression model 2.
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.