| Relational model | Correlation value (%) |
| NDSI | |
| Relation 1 | 72.50 |
| Relation 2 | 80.65 |
| Relation 3 | 80.81 |
|
| S3 |
| Relation 1 | 74.00 |
| Relation 2 | 80.50 |
| Relation 3 | 80.65 |
|
| New thermal index |
| Relation 1 | 86.60 |
| Relation 2 | 87.40 |
| Relation 3 | 87.52 |