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.
Colors indicate degree of overlap, as calculated with CCA, for visual clarity. White = ≤5%, green 5.1–9.9%, yellow 10–14.9%, red ≥15%.
