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.
P values and adjusted R2 for the relationships between pollen indices and monthly CO2 level, mean temperature(T), precipitation(Pr), sunshine hours(SH) and cloud coverage(CC) in June to December of previous year and January to May of current year; dashed line corresponds to P value equal to 0.1.
