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 top figure corresponds to the initial time of the simulation (t = 0), while the bottom, two months later, is the last time. The top figure serves as the initial condition for the simulations.
