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Table 7 Coefficients and phase angles of the daily parameter

From: Evaluation of the Solar Quiet Reference Field (SQRF) model for space weather applications in the South America Magnetic Anomaly

Station

m

Dm,n (nT)

ϕm,n (rad)

n = 0

n = 1

n = 2

n = 3

n = 4

n = 1

n = 2

n = 3

n = 4

CBA

1

25.32

23.86

8.37

2.54

0.72

2.1063

− 2.1558

0.5725

2.5363

2

24.12

23.97

9.57

3.88

1.33

2.1068

− 2.0846

0.5210

− 3.1238

3

29.20

27.61

12.64

7.38

1.98

2.1415

− 1.8238

0.6565

3.1343

4

25.62

24.45

11.91

7.54

2.30

2.2540

− 1.6331

0.7865

2.8667

5

21.42

21.01

11.15

7.16

1.95

2.3530

− 1.4675

0.8492

2.6827

6

19.96

20.96

11.15

6.05

1.60

2.3695

− 1.5300

0.8460

2.6151

7

20.76

20.55

10.53

6.48

1.95

2.2910

− 1.6025

0.7483

2.3997

8

23.52

23.73

12.69

7.45

1.80

2.2454

− 1.6966

0.6220

2.5694

9

27.80

28.13

14.71

9.15

2.67

2.2764

− 1.6627

0.7546

2.7935

10

30.05

29.82

12.78

7.19

2.58

2.1312

− 1.7936

1.0084

− 2.6353

11

26.44

26.76

10.87

4.42

0.87

2.2210

− 1.6910

1.0463

− 2.5885

12

23.82

23.20

8.59

2.88

0.27

2.1603

− 1.9505

0.9166

2.7963

SMS

1

19.10

17.10

4.58

0.79

0.94

2.3583

− 2.1424

− 1.0001

0.9992

2

15.03

16.09

6.94

2.02

0.92

2.4085

− 2.0921

− 0.0845

2.3666

3

17.21

16.27

7.12

3.03

1.30

2.3232

− 1.9994

0.1858

1.6815

4

15.02

14.97

6.64

3.49

1.71

2.6553

− 1.4531

0.6102

1.9698

5

9.30

9.46

5.06

3.39

1.48

2.8168

− 0.7028

1.3859

2.4201

6

9.29

9.75

4.54

2.86

1.30

2.8266

− 0.8110

1.4376

2.5925

7

11.25

9.89

3.94

2.91

1.19

2.6283

− 0.9581

1.3203

2.1527

8

14.35

14.13

6.67

3.85

1.77

2.6597

− 1.2616

0.8058

2.1330

9

17.48

18.62

8.45

3.96

1.83

2.6074

− 1.4914

0.7222

2.0236

10

16.93

16.67

5.75

1.78

1.16

2.4223

− 1.7852

0.6922

2.2022

11

17.05

17.86

6.42

1.51

1.17

2.4628

− 1.7402

0.3131

1.9680

12

15.88

16.11

5.67

1.37

1.27

2.4747

− 1.9115

− 0.5914

1.3125