Fig. 1.
Location of in situ measurements (overall view of the Lab by the kind permission of the Public Affairs Office of the Gran Sasso National Laboratory)
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.