Table 2.
Estimated average analytes concentrations in laboratory air samples.
| Avg. concentration day 1 | Avg. concentration day 2 | |
|---|---|---|
| CO | 64 ± 14 ppb | 65 ± 21 ppb |
| N2O | 296 ± 18 ppb | 294 ± 22 ppb |
| CO2 | 891 ± 57 ppm | 855 ± 68 ppm |
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.