Summary statistics.
| Variable | Description | Min. | Max. | Mean | SD |
|---|---|---|---|---|---|
| SSIZE | Average size class of street trees | 1.0 | 4.0 | 2.30 | 1.28 |
| YSIZE | Average size class of yard trees | 1.0 | 3.4 | 2.36 | 0.73 |
| SDENS | Street tree density (trees per mile) | 0.0 | 410.0 | 157.01 | 112.62 |
| YDENS | Yard tree density (trees per mile) | 25.0 | 606.7 | 222.32 | 116.37 |
| VQUAL | Visual quality-scale | 76.8 | 139.2 | 44.78 | 51.03 |