| Value | Category |
|---|---|
| 0 | |
| 1 | Rural areas of the same district |
| 2 | Urban areas of the same district |
| 3 | Rural area of another district of the same state |
| 4 | Urban area of another district of the same state |
| 5 | Rural area of another state |
| 6 | Urban areas of another state |
| 7 | Another country |
| 8 | |
| 9 |