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.
A and B both depict means from months 7 through 12 only. Each mean line is surrounded by a shaded area depicting pointwise 95% CIs about the means. The overlap between the shaded areas roughly depicts times when the means do not statistically differ.
