Bond outlier for standard amino acid or nucleic acid in comparison to the Engh and Huber EH99 parameters, Parkinson et al. parameter set. It involves two atoms. The obs, mean, stdev will all be in Angstroms units. Example: <bond-outlier atom0="C" atom1="OXT" mean="1.229" obs="1.327" stdev="0.019" z="5.16"/>
loop_ _pdbx_vrpt_instance_intra_bond_outliers.ordinal _pdbx_vrpt_instance_intra_bond_outliers.instance_id _pdbx_vrpt_instance_intra_bond_outliers.atom_1 _pdbx_vrpt_instance_intra_bond_outliers.atom_2 _pdbx_vrpt_instance_intra_bond_outliers.obs _pdbx_vrpt_instance_intra_bond_outliers.mean _pdbx_vrpt_instance_intra_bond_outliers.stdev _pdbx_vrpt_instance_intra_bond_outliers.Z 1 1 OP3 P 1.523 1.607 0.012 -7.03 2 76 OP3 P 1.521 1.607 0.012 -7.20