code: def as_curve(self, start=None, stop=None):
          
          params = {'start': start or getattr(self, 'z start', None),
                    'mnemonic': 'SYN',
                    'step': 0.1524
                    }
  
          return Curve(data, params=params)
docs: Get the synthetic as a Curve, in depth. Facilitates plotting along-
          side other curve data.