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.
Illustration of different alignment windows: A) Reference and test spectra before alignment; B) Alignment result with peak width as the window width; C) Misalignment revealed by expanded window; D) Correct alignment with the expanded window.
