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.
Speeds from the sides increase (I), plateau (II) and finally decrease (III) over time. These results show clear differences in cluster edge speeds which depend on spatial location in the geometry. Significant differences (p<0.05) in speeds are indicated in each figure.
