| Lead Barium correlation | High Potassium correlation | Ranking | ||
| Evaluation item | Correlation degree | Evaluation item | Correlation degree | |
| Alumina (Al2O3) | 0.953 | Alumina (Al2O3) | 0.932 | 1 |
| Barium oxide (BaO) | 0.936 | Copper oxide (CuO) | 0.931 | 2 |
| Lead oxide (PbO) | 0.934 | Phosphorus pentoxide (P2O5) | 0.917 | 3 |
| Magnesium oxide (MgO) | 0.931 | Magnesium oxide (MgO) | 0.911 | 4 |
| Strontium oxide (SrO) | 0.924 | Potassium oxide (K2O) | 0.907 | 5 |
| Calcium oxide (CaO) | 0.921 | Calcium oxide (CaO) | 0.903 | 6 |
| Potassium oxide (K2O) | 0.92 | Iron oxide (Fe2O3) | 0.897 | 7 |
| Copper oxide (CuO) | 0.915 | Lead oxide (PbO) | 0.873 | 8 |
| Iron oxide (Fe2O3) | 0.911 | Tin oxide (SnO2) | 0.866 | 9 |
| Sodium oxide (Na2O) | 0.9 | Strontium oxide (SrO) | 0.864 | 10 |
| Phosphorus pentoxide (P2O5) | 0.896 | Barium oxide (BaO) | 0.855 | 11 |
| Tin oxide (SnO2) | 0.884 | Sulfur dioxide (SO2) | 0.85 | 12 |
| Sulfur dioxide (SO2) | 0.882 | Sodium oxide (Na2O) | 0.849 | 13 |