Fig 3. General time coverage data.
Time coverage per phase and overall. The inset shows an enlarged view of the leftmost part of the plot (top ranked squares).
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.