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 24 hour visualization of usage sensor showing activity: 1.2.1: Sensor in use as black, sensor not in use as white; 1.3.2: Difference to normal pattern added shown in green and blue; 1.3.3: Actual data with normal pattern superimposed as darker tint; 1.2.3: Sensor in use as blue, sensor not in use as white.
