| Code value | Figure 4 decode table |
| Interpretation of value | |
| 0 | Damping ratio is above 5% and frequency is not shifting significantly |
| 1 | System mode and eigenvalue are shifting significantly |
| 2 | Damping ratio under 5%/Flag oscillation |
| 3 | Damping ratio is under 1% and eigenvalue’s real part is reaching 0/Flag critical |
| 4 | A dominant system mode has a positive real part [Unstable condition]/FLAG HIGHEST PRIORITY |