| Penetration Resistance (MPa) | ||||||
| Depth (cm) | 0 - 10 | 10 - 20 | 20 - 30 | |||
| Machakos | Kitui | Machakos | Kitui | Machakos | Kitui | |
| 1 | 5.29 | 5.34 | 5.45 | 5.47 | 4.68 | 5.73 |
| 2 | 5.75 | 5.82 | 5.47 | 5.84 | 5.67 | 5.70 |
| 3 | 5.81 | 5.48 | 5.77 | 5.61 | 5.61 | 5.82 |
| 4 | 5.46 | 5.46 | 4.85 | 5.68 | 5.55 | 5.82 |
| 5 | 5.62 | 4.81 | 5.50 | 5.63 | 5.69 | 5.85 |
| 6 | 5.62 | 5.70 | 5.50 | 5.79 | 5.69 | 5.80 |
| 7 | 5.34 | 5.49 | 5.39 | 5.79 | 5.65 | 4.98 |
| 8 | 5.59 | 5.08 | 5.17 | 5.86 | 4.90 | 5.69 |
| 9 | 4.87 | 5.05 | 5.03 | 5.69 | 5.63 | 5.67 |
| Average | 5.48 | 5.35 | 5.34 | 5.71 | 5.45 | 5.67 |