U.S. Geological Survey Open-File Report 2007-1194


Figure 27.  One of the Onset Hobo U20 pressure loggers and threaded stainless-steel rod used on Dauphin Island, Alabama, in 2013.

Figure 27. One of the Onset Hobo U20 pressure loggers and threaded stainless-steel rod used on Dauphin Island, Alabama, in 2013.