Percentage of photographs with non-green attributes and percentage of non-green scenes with pavement or water.
| Attributes | Regions | Grade level | |||||
|---|---|---|---|---|---|---|---|
| Urban | Suburban | Rural | One | Three | Four | Six | |
| % with “non-green” | 99.7 | 98.6 | 99.3 | 99.8 | 98.2 | 98.7 | 99.8 |
| % with pavement | 63.8 | 49.9 | 39.7 | 53.0 | 54.8 | 48.3 | 46.7 |
| % with water | 12.1 | 16.5 | 8.2 | 6.2 | 9.0 | 22.5 | 11.9 |