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.
Differences between scans for each signal in the frequency domain. All signals are in grey with average values in dotted green, red, and blue for Scan2-Scan1, Scan 3-Scan1 and Scan3-Scan2 respectively. Residual response at position 127 in solid green, red, and blue for Scan2-Scan1, Scan 3-Scan1 and Scan3-Scan2, respectively.
