| The variable | The number | Mean | Median | KS Z | P-value | |
| Oak | Silver | 8 | 25.23 | 5.22 | 994.0 | 965.0 |
| Arsenic | 8 | 17 | 18 | 571.0 | 9.0 | |
| Cadmium | 8 | 14 | 15 | 723.0 | 672.0 | |
| Cobalt | 8 | 75.23 | 5.22 | 791.0 | 559.0 | |
| Chromium | 8 | 25.21 | 21 | 458.0 | 985.0 | |
| Cesium | 8 | 88.19 | 22 | 666.0 | 766.0 | |
| Bismuth | 8 | 13.17 | 5.16 | 515.0 | 953.0 | |
| Barium | 8 | 63.15 | 5.12 | 792.0 | 558.0 | |
| Siah Tello | silver | 8 | 75.26 | 25 | 496.0 | 966.0 |
| Arsenic | 8 | 25.18 | 20 | 756.0 | 618.0 | |
| Cadmium | 8 | 88.20 | 20 | 542.0 | 931.0 | |
| Cobalt | 8 | 26 | 5.27 | 684.0 | 738.0 | |
| Chromium | 8 | 13.18 | 20 | 803.0 | 540.0 | |
| Cesium | 8 | 5.23 | 5.23 | 417.0 | 995.0 | |
| Bismuth | 8 | 88.15 | 15 | 758.0 | 613.0 | |
| Barium | 8 | 5.12 | 15 | 863.0 | 446.0 | |
| Reed | silver | 4 | 25.19 | 20 | 698.0 | 714.0 |
| Arsenic | 4 | 25.17 | 5.17 | 349.0 | 1 | |
| Cadmium | 4 | 25.21 | 5.22 | 384.0 | 999.0 | |
| Cobalt | 4 | 22 | 5.22 | 601.0 | 863.0 | |
| Chrome | 4 | 5.17 | 15 | 883.0 | 417.0 | |
| Cesium | 4 | 75.21 | 22 | 538.0 | 935.0 | |
| Bismuth | 4 | 5.17 | 5.17 | 614.0 | 846.0 | |
| Barium | 4 | 5.14 | 15 | 620.0 | 837.0 | |