| Study area | Mmin | Mmax | Frequency | Focal depth Hmax (km) |
| The west coast, USA | 2 | 7.3 | 320,605 | 650 |
| 3 | 51556 | 217.43 | ||
| 4 | 9273 | 121.31 | ||
| 5 | 1133 | 102.97 | ||
| 6 | 117 | 57 | ||
| 7 | 10 | 17.43 | ||
| U01 area | 2 | 7.0 St. HELENS volcano | 24,277 | 102.21 |
| 3 | 7236 | 91.39 | ||
| 4 | 2798 | 62 | ||
| 5 | 395 | 62 | ||
| 6 | 41 | 57 | ||
| 7 | 1 | 12 | ||
| U02 area | 2 | 7.3 | 278,185 | 650 |
| 3 | 39,796 | 217.43 | ||
| 4 | 6080 | 121.31 | ||
| 5 | 664 | 102.97 | ||
| 6 | 66 | 33 | ||
| 7 | 9 | 17.43 |