Pettitt’s test

Sites

Precipitation

Soil moisture

Break date

Averagebeforebreakdate

Averageafterbreakdate

Pettitt’s statistics (U and P-value)

Break date

Averagebeforebreakdate

Averageafterbreakdate

Pettitt’s statistics (U and P-value)

Annual data (“precipitation(mm/year)” and “soil moisture (mm/month)”)

Syer

1998

228.53

294.12

U = 212

Pv = 0.03

2007

86.42

108.89

U = 195

Pv = 0.061

Tessekere

1997

248.15

325.65

U = 231

Pv = 0.01

2007

85.49

121.24

U = 253

Pv = 0.005

Loughere-thioly

1997

322.46

388.30

U = 195

Pv = 0.06

2007

88.39

117.32

U = 229

Pv = 0.016

Ballou

1998

481.89

580.90

U = 273

Pv = 0.002

2002

133.33

154.72

U = 142

Pv = 0.32

Wet season (mm/month)

Syer

07/1997

66.41

87.50

U = 1179

Pv = 0.01

07/2005

102.41

136.13

U = 997

Pv = 0.065

Tessekere

08/1998

71.09

96.63

U = 1481

Pv = 0.001

07/2007

110.58

161.37

U = 1200

Pv = 0.014

Loughere-thioly

09/1997

93.58

114.36

U = 1017

Pv = 0.05

08/2004

115.35

152.10

U = 1049

Pv = 0.045

Ballou

07/1998

133.51

162.22

U = 1140

Pv = 0.02

07/2003

185.97

232.72

U = 1021

Pv = 0.055

Dry season (mm/month)

Syer

10/1999

2.87

3.31

U = 3653

Pv = 0.36

06/2007

79.09

101.10

U = 5464

Pv = 0.043

Tessekere

05/2012

4.06

4.12

U = 1258

Pv = 1

06/2007

75.98

108.96

U = 8248

Pv = 3.210⁻⁴

Loughere-thioly

10/1997

4.69

4.98

U = 174

Pv = 1

06/2007

78.07

104.69

U = 6772

Pv = 0.005

Ballou

03/2012

9.91

10.07

U = 940

Pv = 1

06/2003

113.39

132.65

U = 3794

Pv = 0.31