Variables (%) | Minimum | Maximum | Moyenne (m) | Écart-type (σ) | Coefficient de variation (σ/m) |
Sn | <0.01 | 2.06 | 0.059 | 0.157 | 0.26 |
Nb | <0.01 | 0.06 | 0.019 | 0.011 | 0.59 |
Ta | <0.01 | 0.03 | 0.012 | 0.004 | 0.32 |