| Region | XZ | LX | GD | NG | JX | JXX | JD | Total | |
| RA-K (mg・kg−1) | Range | 1 - 826 | 9 - 420 | 6 - 310 | 15 - 470 | 2 - 611 | 11 - 844 | 8 - 371 | 1 - 844 |
| Average | 57 | 71 | 68 | 94 | 66 | 77 | 47 | 68 | |