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.
Estimated 24-hour mean temperature at residence on the previous day of examination. Examination dates can differ from subject to subject. Each dot represents a home address. If one changed his address during the study period, there will be a new dot for each of his new addresses.
