Figure 1.
Histogram showing the observed DLMO in night shift workers (plotted on a 24-h clock). The range of observed DLMOs spans nearly the entire 24-h day, though many are clustered around midnight.
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.