
US20160134372A1 | page 42 | https://thedailydialectics.com/pdfs/wipow/US20160134372A1/US20160134372A1.pdf
US 2016/0134372 Al 11 pressure measurements associated with each of the plu- rality of one or more other nodes; determining a relative elevation based upon the pressure measurement associated with the first node and the pres- sure measurement associated with the second node; and determining a…