Four SISRE Accuracy Standards
| Symbol | A | B | C | D |
|---|---|---|---|---|
| Accuracy Standard | SISRE (95%, statistical value of all satellites) | SISRE (95%, statistical value of any single satellite) | SISRE (99.94%, average value over all the points on the global of any globally of any single satellite) | SISRE (99.79%, the worst case single satellite) |
| Threshold (m) | ≤ 2 | ≤ 4.6 | ≤ 15 | ≤ 15 |
| Numerical Results (m) | 1.0728 | 1.5840 | 5.9477 | 4.0592 |