Fig. A4.
Temporaral particle distributions of sub-case 4 for the reference case (Red particles were those from the previous sub-case and the blue particles were newly generated by the index person through breathing for the next sub-case.).
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.