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.
Three 10‐year time series created by splitting the result of the 30‐year run with 20 years application from Figure 11 into three decades then fitting a linear regression of relative population size against year within each decade. The equations shown for each decade indicate the slope of the relative PGR for that decade
