Number of maps for which there was complete or partial agreement between observers in each classification category
| Complete agreement between all three observers | Agreement between two observers | Total | |
|---|---|---|---|
| Round | 36 | 32 | 68 |
| Oval | 11 | 16 | 27 |
| Superior steepening | 4 | 4 | 8 |
| Inferior steepening | 12 | 8 | 20 |
| Symmetric bow tie | 27 | 5 | 32 |
| Symmetric bow tie with skewed radial axes | 0 | 0 | 0 |
| Asymmetric bow tie with superior steepening | 7 | 5 | 12 |
| Asymmetric bow tie with inferior steepening | 9 | 6 | 15 |
| Asymmetric bow tie with skewed radial axes | 0 | 0 | 0 |
| Irregular | 6 | 7 | 13 |
| All groups combined | 112 | 83 | 195 |