Figure 6.
Measurements collected at the citizen science-operated sites in the Houston campaign for the (a) to (e) the CairClip O3/NO2 sensor and (f) to (h) the CairClip NO2 sensor.
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.