Table 3.
Thresholds of missing fields to determine type of hash code.
| Parameters | Hash code 1 | Hash code 2 | Hash code 3 | Hash code 4 | Hash code 5 |
| Lower threshold | 0 | 1 | 1 | 1 | 1 |
| Upper threshold | 1 | 2 | 3 | 3 | 3 |
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