Class

Indicator and range

MPDI

PDI

PVI

K

No Drought

0 - 0.3

0 - 0.3

>18

-

Mild

-

-

15 - 18

0.2 - 0.4

Moderate

0.3 - 0.5

0.3 - 0.5

12 - 15

0.4 - 0.6

Severe

0.5 - 0.8

0.5 - 0.8

9 - 12

0.6 - 0.8

Extreme

0.8 - 1.0

0.8 - 1.0

<9

0.8 - 1.0