Figure 1.
Spectral online monitoring data of a CDF-pair shown at iPDT start (pre iPDT, solid black line) and iPDT end (post iPDT, solid red line). Dotted lines indicate the detection thresholds.
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.