| Properties | Niigata | Ehime |
| Area (m2) | Area (m2) | |
| Min | 212.0 | 1630.5 |
| Max | 47,916.0 | 129,713.9 |
| Mean | 9023.6 | 24,196.3 |
| Standard deviation | 8328.5 | 23,824.4 |
| Number | 10,662 | 2543 |