Figure 1.
The percent of institutions irradiating TLD in any year that had at least one beam that failed the RPC’s 5%/5 mm criteria for acceptability.
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.