| Value | Category |
|---|---|
| 1 | Village market |
| 2 | District market |
| 3 | Farm gate |
| 4 | Wholesale market |
| 5 | Commercial company |
| 6 | Cooperative |
| 7 | International |
| 8 | Other |
| 2147483622 | Don't Know |
| 2147483623 | N/A |
| 2147483625 | Refused to answer |
| 2147483645 | Missing |
| 2147483646 | Outrange |
| 1000000001 | .B |