Region

Domain D_N

Model

% contribution

Dominant component

x

y

North Africa

5 ≤ x ≤ 40

R_N1

87.23

12.77

x

−10 ≤ y ≤ 40

R_N2

63.60

36.4

x

R_N3

60.99

39.01

x

R_N4

39.79

60.21

y

West Africa

0 ≤ x ≤ 30

RW1

68.49

31.51

x

−20 ≤ y ≤ 20

RW2

50.86

49.14

x

Central Africa

−15 ≤ x ≤ 25

R_C1

72.93

27.07

x

10 ≤ y ≤ 32

R_C2

67.21

32.79

x

East Africa

−25 ≤ x ≤ 18

R_E1

57.31

42.69

x

30 ≤ y ≤ 55

R_E2

57.74

40.26

x

Southern Africa

−40 ≤ x ≤−18

RS1

54.75

45.25

x

10 ≤ y ≤ 35

RS2

72.41

27.53

x