| Value | Category |
|---|---|
| 1 | Less than 2 rai |
| 2 | 2 to 4 rai and 399 tarangwas |
| 3 | 5 to 9 rai and 399 tarangwas |
| 4 | 10 to 19 rai and 399 tarangwas |
| 5 | 20 to 39 rai and 399 tarangwas |
| 6 | 40 rai or more |
| 11 | Less than 5 rai |
| 12 | 5 to 19 rai and 399 tarangwas |
| 13 | 20 rai or more |
| 19 | Fishing, forestry, agricultural services, etc. |
| Sysmiss |