| Value | Category | 
|---|---|
| 10 | NATURAL | 
| 11 | Mud/clay/earth | 
| 12 | Sand | 
| 13 | Dung | 
| 20 | RUDIMENTARY | 
| 21 | Raw wood planks | 
| 22 | Palm, bamboo | 
| 23 | Brick | 
| 24 | Stone | 
| 30 | FINISHED | 
| 31 | Parquet, polished wood | 
| 32 | Vinyl, asphalt strips | 
| 33 | Ceramic tiles | 
| 34 | Cement | 
| 35 | Carpet | 
| 36 | Polished stone/marble/granite | 
| 96 | other |