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.
The explained variance is given in brackets. Colors indicate the cluster. Cluster 1 is shown in red, cluster 2 in green and cluster 3 in black. Letters indicate the morphotype: w for winter, s for spring, e for semi-winter and d for swedes.
