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.
L+ T+ = high light–high temperature, L+ T- = high light–low temperature, L- T+ = low light–high temperature, L- T- = low light–low temperature.
