The new standards provide Table 8 for the recommended number of check points required for validating product accuracies. A minimum of 30 check points should be used to assess vertical or horizontal accuracy for a product. For project areas that are larger than 10,000 square kilometers, use only 120 checkpoints.
| Project Area (Square Kilometers) | Total Number of Checkpoints for NVA |
|---|---|
| ≤10005 | 30 |
| 1001-2000 | 40 |
| 2001-3000 | 50 |
| 3001-4000 | 60 |
| 4001-5000 | 70 |
| 5001-6000 | 80 |
| 6001-7000 | 90 |
| 7001-8000 | 100 |
| 8001-9000 | 110 |
| 9001-10000 | 120 |
| >10000 | 120 |