≥2.0 | Extremelywet |
1.5 - 1.99 | Verywet |
1 - 1.49 | Moderatelywet |
−0.99 - 0.99 | Nearly normal |
−1.0 - −1.49 | Moderately dry |
−1.5 - −1.99 | Very dry |
≤−2.0 | Extremely dry |