TABLE 1.
GENERAL CHARACTERISTICS OF EXPOSURE ATMOSPHERES
| PM (μg/m3) | NO2 (ppm) | NO (ppm) | CO (ppm) | |
| Gasoline + Diesel (ME) | 300 | 2 | 16 | 104 |
| Diesel (human exposure) | 106 | 0.4 | 3.5 | 9 |
Definition of abbreviation: PM = particulate matter.
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.