def METHOD_NAME(self):
    super(SoundSpeedPlotter, self).METHOD_NAME()
    self.pressure = [
        seawater.pres(self.temperature_depths[idx], ll[0])
        for idx, ll in enumerate(self.points)
    ]
    ureg = pint.UnitRegistry()
    try:
        u = ureg.parse_units(self.variable_units[0].lower())
    except:
        u = ureg.dimensionless
    if u == ureg.boltzmann_constant:
        u = ureg.kelvin
    if u == ureg.kelvin:
        temperature_c = (
            ureg.Quantity(self.temperature, u).to(ureg.celsius).magnitude
        )
    else:
        temperature_c = self.temperature
    self.sspeed = seawater.svel(self.salinity, temperature_c, self.pressure)