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 horizontal axis represents the functional code in the COG database, and the description of that code is shown on the right side of the figure. The y-axis indicates the frequency of each functional code.
