SPI

Category

Number of time in 45 years

Percentage of occurrence

Severity of events

≥2

Extremely wet

3

1.8%

1 in 15 years

1.5 - 1.99

Severely wet

9

5.4%

1 in 5 years

1 - 1.49

Moderately wet

22

13.2%

1 in 2.1 years

0 - 0.99

Mild wetness

51

30.5%

1 in 0.88 year

0 to −0.99

Mild dryness

42

25.2%

1 in 1.1 years

−1 to −1.49

Moderately dry

21

12.5%

1 in 2.1 years

−1.5 to −1.99

Severely dry

13

7.8%

1 in 3.5 years

≤−2

Extremely dry

6

3.6%

1 in 7.5 years

Total

167

100%