Gets the values the user input to this dialog

        :returns: dict of inputs:
        |               *'use_calfile'*: bool, -- whether to apply calibration at all
        |               *'calname'*: str, -- the name of the calibration dataset to use
        |               *'frange'*: (int, int), -- (min, max) of the frequency range to apply calibration to

def values(self):
        """Gets the values the user input to this dialog

        :returns: dict of inputs:
        |               *'use_calfile'*: bool, -- whether to apply calibration at all
        |               *'calname'*: str, -- the name of the calibration dataset to use
        |               *'frange'*: (int, int), -- (min, max) of the frequency range to apply calibration to
        """
        results = {}
        results['use_calfile'] = self.ui.calfileRadio.isChecked()
        results['calname'] = str(self.ui.calChoiceCmbbx.currentText())
        results['frange'] = (self.ui.frangeLowSpnbx.value(), self.ui.frangeHighSpnbx.value())
        return results