Table 3.
Air quality statistics in the same morning of testing
| Pollutant | Mean concentration (µg/m3) |
Standard deviation |
|---|---|---|
| NO2 | 21.4 | 10.1 |
| Ozone | 48.3 | 26.1 |
| PM2.5 | 18.5 | 30.7 |
| PM10 | 28.7 | 33.6 |
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.