code: def ssa(scatterer, h_pol=True):
      
  
      ext_xs = ext_xsect(scatterer, h_pol=h_pol)
      return sca_xsect(scatterer, h_pol=h_pol)/ext_xs if ext_xs > 0.0 else 0.0
docs: Single-scattering albedo for the current setup, with polarization.    
  
      Args:
          scatterer: a Scatterer instance.
          h_pol: If True (default), use horizontal polarization.
          If False, use vertical polarization.
  
      Returns:
          The single-scattering albedo.