Table 2 Summary of results
From: Automated detection of geomagnetic storms with heightened risk of GIC
Test | Test variable | MODWT | FD | AIC |
|---|---|---|---|---|
Reliability | Storms | 15 | 15 | 13 |
All detections | SSCs | 24 | 26 | 12 |
P SSC > 0 | Stormy period (<24 h) | 240 | 433 | 23 |
False positives | 206 | 526 | 148 | |
False negatives | 0 | 0 | 2 | |
R = | 0.19 | 0.08 | 0.17 | |
Reliability: | Storms | 14 | 15 | 13 |
With stormy conditions | SSCs | 10 | 11 | 9 |
P SSC > 80 | Stormy period (<24 h) | 11 | 17 | 2 |
False positives | 4 | 7 | 5 | |
False negatives | 1 | 0 | 2 | |
R = | 4.80 | 3.25 | 3.67 | |
Speed | Minimum delay (s) | 96 | 60 | 12 |
Average delay (s) | 160 | 138 | 55 | |
Maximum delay (s) | 246 | 252 | 132 | |
Computation time (s) | 0.42 | 0.39 | 0.40 | |
Accuracy | \(\mu (t_m-t)\) (s) | 17.47 | −0.67 | −36.00 |
\(\sigma (t_m-t)\) (s) | 53.09 | 38.89 | 77.36 | |
\(\mu (\Delta H_m-\Delta H)\) (nT) | −4.76 | −1.41 | −0.03 | |
\(\sigma (\Delta H_m-\Delta H)\) (nT) | 10.02 | 7.79 | 7.08 |