loop_
        _ihm_derived_angle_restraint.id
        _ihm_derived_angle_restraint.feature_id_1
        _ihm_derived_angle_restraint.feature_id_2
        _ihm_derived_angle_restraint.feature_id_3
        _ihm_derived_angle_restraint.restraint_type
        _ihm_derived_angle_restraint.harmonic_angle_threshold_mean
        _ihm_derived_angle_restraint.harmonic_angle_threshold_esd
        _ihm_derived_angle_restraint.dataset_list_id
         1  9 17  1 'harmonic' 114.6 1.0 5
         2 10 18  2 'harmonic' 116.9 1.0 5
         3 11 19  3 'harmonic' 112.9 1.0 5
         4 12 20  4 'harmonic' 108.9 1.0 5
         5 13 21  5 'harmonic' 114.6 1.0 5
         # ...  abbreviated ...