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.
Benchmark model (M1) source apportionment estimates under base flow conditions for the period August 2012 to August 2013. The solid central line, boxes, and whiskers represent the median, 50% and 95% Bayesian credible intervals, respectively.
