Every COD entry the OPTIMADE filter returns for MgO (208), each CIF fetched and checked for a PubChem back-link. Six positive controls from KCl and Ca(OH)2 included for comparison. related_databases lists the _cod_related_entry database names in each CIF; pubchem_cid_pointer is the PubChem CID a control CIF names.
| Column | Range | Mean | Filled |
|---|---|---|---|
| cod_id | 1,000,050–9,016,457 | 7,764,408 | 100% |
| formula | 6 distinct | — | 100% |
| role | 3 distinct | — | 100% |
| cif_url | 279 distinct | — | 100% |
| has_related_loop | 2 distinct | — | 100% |
| related_databases | 12 distinct | — | 90% |
| pubchem_mentioned | 2 distinct | — | 100% |
| pubchem_cid_pointer | 4,873–139,036,506 | 26,220,980 | 2% |