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.
Locations of 47 US Cities included in the Study (Honolulu not shown). Symbol Size according to Quartiles of Population Size and Symbol Color according to Quintiles of 99th Percentile of daily Minimum Temperature (green-cold to red-warm) [4].
