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 solid line is the kernel density estimate plotted within a ±30 kb window for a better graphical visualization of the ”bell-shape” curve.
