| Soil | Indium (mg/kg) | Thallium (mg/kg) | R2 | |
| Mean | Mean | STD | ||
| Alred | 0.05 | 0.23 | 0.12 | 0.98 |
| Broseley | ND | 0.10 | 0.05 | NS |
| Calhoun pooled | 0.02 | 0.24 | 0.05 | NS |
| Clana pooled | Not Detected | 0.10 | 0.03 | 0.66 |
| Commerce | 0.01 | 0.32 | 0.08 | 0.99 |
| Dubbs pooled | ND | 0.25 | 0.05 | 0.91 |
| Foley | 0.03 | 0.41 | 1.12 | 0.97 |
| Hildebrecht | 0.03 | 0.21 | 0.07 | 0.85 |
| Irondale pooled | 0.25 | 0.27 | 0.07 | 0.94 |
| Kaintuck | 0.21 | 0.16 | 0.01 | NS |
| Killarney pooled | 0.03 | 0.23 | 0.09 | 0.87 |
| Knobtop | 0.04 | 0.15 | 0.14 | 0.99 |
| Lilbourn | Not Detected | 0.10 | 0.01 | NS |
| Menfro | Not Detected | 0.29 | 0.08 | 0.89 |
| Overcup | Not Detected | 0.29 | 0.05 | 0.99 |
| Reelfoot | 0.01 | 0.23 | 0.06 | 0.66 |
| Rueter | 0.03 | 0.15 | 0.32 | 0.93 |
| Sharkey | 0.03 | 0.44 | 0.11 | 0.85 |
| Wakeland pooled | 0.02 | 0.22 | 0.05 | 0.86 |
| Wilbur | 0.01 | 0.20 | 0.04 | 0.84 |