e source code of PeakFQ from [[https://water.usgs.gov/software/PeakFQ/|its website]]. Here, I'll use [[https://water.usgs.gov/software/PeakFQ/code/7.5.1/PeakFQ_7.5.1.src.zip|P... h
# download source code
wget https://water.usgs.gov/software/PeakFQ/code/7.5.1/PeakFQ_7.5.1.src.zip