Statistical tests

Louga

Podor

Saint Louis

min rain

max rain

(Trend) Mann-Kendall, H₀: there is no trend

test statistic τ

0.009

0.126

0.118

−0.077

0.184

p-value

0.715

0.000

0.000

0.003

0.000

(ur.df) Dickey-Fuller/type = “trend”, H₀: presence of trend

z.diff.lag

9

9

12

8

13

df

638

638

632

640

630

RSE

0.29

0.24

0.28

0.18

0.30

test statistic phi3

2.27

1.62

2.08

1.42

2.48

5% critical value: 6.25

p-value < 2.2e−16

(Seasonality) Mann-Kendall, H₀: there is no presence of seasonality

test statistic τ

0.011

0.128

0.121

−0.076

0.189

p-value

0.695

0.000

0.000

0.004

0.000