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Table 4 Statistics of mean weather elements

From: The impact of rainfall variability and crop production on vertisols in the central highlands of Ethiopia

Variables

Units

January

February

March

April

May

June

July

August

September

October

November

December

W

Number

34

62

103

118

125

213

270

265

184

56

19

10

D

Number

276

220

207

182

185

87

40

45

116

254

281

300

W/D

Number

22

30

49

52

42

48

34

36

51

25

10

9

W/W

Number

12

32

54

66

83

165

236

229

133

31

9

1

Rainfall

Min

0.25

0.25

0.25

0.3

0.25

0.25

0.25

0.25

0.25

0.25

0.25

0.25

Max

10.2

20.5

57.8

29.4

28.8

39.8

54.6

75.9

48.8

48.7

32.8

19.6

Tmax (°C)

Min

18.8

18.8

21.2

15

18

18.5

16.1

17.1

18.2

18.3

19.6

21.9

Max

29.1

32.1

32.7

34.6

30.5

31.8

25.4

25.7

25.8

26.7

27

26.9

Tmin (°C)

Min

1.3

1.6

3.1

2.8

3.2

1.9

4.8

3.6

3.5

2.4

1.3

1.9

Max

13.4

14.1

15.6

16.2

15.2

13.7

16.9

17.6

14.3

15.3

11.9

12.1

SR (w/m2)

Min

23.8

23.5

17.6

2.3

15.3

10.6

1.8

6.1

16

10.2

23.3

23.6

Max

25.4

27.2

28.3

28.3

28.1

27.4

27.2

27.9

27.9

27.4

25.7

24.3

Max. RH

Min

7.8

7.7

11.8

9.3

15.5

13.3

23.2

25.9

21.2

7.9

10.4

7.7

Max

55.7

60

62.1

86.7

64.2

70.9

88.3

79

63.6

77.9

56.2

48.5

WS (m/s)

Min

3

3

3

3

3

3

3

3

3

3

3

3

Max

3

3

3

3

3

3

3

3

3

3

3

3

  1. W wet days count, D dry days count; W/W wet days count following wet days count, W/D wet days count following dry day count, R rainfall, Tmin minimum temperature, Tmax maximum temperature, SR solar radiation, RH relative humidity, WS wind speed