Fig. 6.
PCA on the level means, scaled data. Left: score plots with projected residuals. Right: biplots. Top half: level means. Bottom half: level means after subtracting the effect matrix for the time factor.
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.