(b).
| Leads | s0020arem | s0020brem | s0021arem | s0021brem | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| TP | FN | FP | TP | FN | FP | TP | FN | FP | TP | FN | FP | |
| i | 159 | 0 | 0 | 156 | 0 | 0 | 184 | 0 | 0 | 183 | 0 | 0 |
| ii | 159 | 0 | 0 | 156 | 0 | 0 | 184 | 0 | 0 | 183 | 0 | 0 |
| iii | 159 | 0 | 0 | 156 | 0 | 0 | 184 | 0 | 0 | 183 | 0 | 0 |
| avr | 159 | 0 | 0 | 156 | 0 | 0 | 184 | 0 | 0 | 183 | 0 | 0 |
| avl | 159 | 0 | 0 | 156 | 0 | 0 | 184 | 0 | 0 | 183 | 0 | 0 |
| avf | 158 | 3 | 21 | 151 | 5 | 20 | 184 | 0 | 0 | 183 | 0 | 0 |
| v1 | 159 | 0 | 0 | 156 | 0 | 0 | 184 | 0 | 0 | 183 | 0 | 0 |
| v2 | 159 | 0 | 0 | 156 | 0 | 0 | 184 | 0 | 0 | 183 | 0 | 0 |
| v3 | 159 | 0 | 0 | 156 | 0 | 0 | 183 | 1 | 0 | 183 | 0 | 0 |
| v4 | 158 | 1 | 0 | 156 | 0 | 0 | 184 | 0 | 0 | 183 | 0 | 0 |
| v5 | 159 | 0 | 0 | 156 | 0 | 0 | 184 | 0 | 0 | 183 | 0 | 0 |
| v6 | 159 | 0 | 0 | 156 | 0 | 0 | 184 | 0 | 0 | 183 | 0 | 0 |
| Total | 1906 | 4 | 21 | 1867 | 5 | 20 | 2207 | 1 | 0 | 2196 | 0 | 0 |