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.
The 2,955 pixels form 10 clusters with a modularity value of 0.19. Each cluster of geo-pixels has a different unique color. The subnational boundaries are marked with thinner lines, depicting the administrative units of this graph.
