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Statistics of overlapping concepts at Levels 1 and 2.
| Area | C | V | V/C (%) | D | Avg = V/D |
|---|---|---|---|---|---|
| Substance | 81 | 35 | 43 | 9 | 3.9 |
| Topography | 333 | 116 | 35 | 52 | 2.2 |
| Procedure | 20 | 3 | 15 | 3 | 1.0 |
| Identity | 20 | 1 | 5 | 1 | 1.0 |
| Topography, procedure | 380 | 6 | 2 | 6 | 1.0 |
| Topography, morphology | 18 | 1 | 6 | 1 | 1.0 |
| Total | 852 | 162 | 19 | 72 | 2.3 |
C = # concepts; V = # overlapping concepts; D = # overlapping roots.
