loop_
        _ihm_derived_dihedral_restraint.id
        _ihm_derived_dihedral_restraint.feature_id_1
        _ihm_derived_dihedral_restraint.feature_id_2
        _ihm_derived_dihedral_restraint.feature_id_3
        _ihm_derived_dihedral_restraint.feature_id_4
        _ihm_derived_dihedral_restraint.restraint_type
        _ihm_derived_dihedral_restraint.harmonic_dihedral_threshold_mean
        _ihm_derived_dihedral_restraint.harmonic_dihedral_threshold_esd
        _ihm_derived_dihedral_restraint.dataset_list_id
         1 25  9 17  1 'harmonic'  56.1 2.3 6
         2 26 10 18  2 'harmonic' -52.7 2.3 6
         3 27 11 19  3 'harmonic' -71.6 2.3 6
         4 28 12 20  4 'harmonic'  58.4 2.3 6
         5 29 13 21  5 'harmonic'  56.1 2.3 6
         # ...  abbreviated ...