SDII Value | Significance (Intensity) | PCI Value | Significance (Temporal Distribution) |
To 15 inclusive | Low intensity | To 10 inclusive | Uniform distribution |
Over 15 to 20 | Moderate intensity | Over 10 to 15 | Moderate distribution |
Over 20 to 25 | High intensity | Over 15 to 20 | Irregular distribution |
Over 25 to 30 | Strong Intensity | Over 20 | Strongly irregular distribution |
Over 30 | Very strong intensity |