SPI

Category

Number of time in 45 years

Percentage of occurrence

Severity of events

≥2

Extremely wet

2

1.2%

1 in 22.5 years

1.5 - 1.99

Severely wet

8

4.8%

1 in 5.6 years

1 - 1.49

Moderately wet

19

11.4%

1 in 2.4 years

0 - 0.99

Mild wetness

45

26.9%

1 in 1 year

0 to −0.99

Mild dryness

47

28.1%

1 in1year

−1 to −1.49

Moderately dry

26

15.6%

1 in 1.7 years

−1.5 to −1.99

Severely dry

15

9%

1 in 3 years

≤−2

Extremely dry

5

3%

1 in 9 years

Total

167

100%