Figure 1:
Distribution of segments according to the results of pre-processing, identification, and the surrogate test using linear (blue) and nonlinear structures (red).
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.