Numbers of trees in each stress group classified by paved area beneath the crown.
| Species | ≤ 10% of paved area | > 10% of paved area | N |
|---|---|---|---|
| Acer nigrum | 9 | 11 | 20 |
| Cornus florida | 4 | 27 | 31 |
| Ulmus americana | 7 | 6 | 13 |
| Quercus palustris | 15 | 4 | 19 |
| Quercus rubra | 23 | 6 | 29 |
| Acer saccharum | 16 | 9 | 25 |
| Platanus occidentalis | 5 | 6 | 12 |
| Quercus alba | 23 | 4 | 27 |