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.
Average values of nitric oxide concentrations measured from 10 a.m. to 6 p.m. at regular and photocatalytic pavement at the Daszynskiego roundabout.
| Parameter | Regular Pavement | Photocatalytic Pavement | ||||
|---|---|---|---|---|---|---|
| Nitric oxides | NO | NO2 | NOx | NO | NO2 | NOx |
| Average daily concentration (ppb) | 32.3 | 33.0 | 65.2 | 20.8 | 24.4 | 45.2 |
| Standard deviation | 9.7 | 5.2 | 13.5 | 7.9 | 4.5 | 12.0 |
| Average daily reduction of nitric oxides (%) | - | - | - | 36% | 26% | 31% |
