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.
CI = confidence interval, PM10 = particulate matters with an aerodynamic diameter of less than 10 μm, RDI = respiratory disturbance index, RH = relative humidity, Tempt = temperature.
