code: def build_ebound_table(self):
          
          cols = [
              Column(name="E_MIN", dtype=float, data=self._emin, unit='MeV'),
              Column(name="E_MAX", dtype=float, data=self._emax, unit='MeV'),
              Column(name="E_REF", dtype=float, data=self._eref, unit='MeV'),
              Column(name="REF_DNDE", dtype=float, data=self._ref_dnde,
                     unit='ph / (MeV cm2 s)'),
              Column(name="REF_FLUX", dtype=float, data=self._ref_flux,
                     unit='ph / (cm2 s)'),
              Column(name="REF_EFLUX", dtype=float, data=self._ref_eflux,
                     unit='MeV / (cm2 s)'),
              Column(name="REF_NPRED", dtype=float, data=self._ref_npred,
                     unit='ph')
          ]
          tab = Table(data=cols)
          return tab
docs: Build and return an EBOUNDS table with the encapsulated data.