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Earth, Planets and Space

Table 2 Error values in nT after fine-tuning training of the neural network for every month, on the left for the whole latitude region, on the right for low- and mid-latitudes

From: Machine learning-based calibration of the GOCE satellite platform magnetometers

Month

90-QDLAT

50-QDLAT

MAE

STD

MAE

STD

Train | Test

Train | Test

200911

8.98 | 8.89

20.08 | 19.40

4.63

5.81

200912

8.88 | 8.85

19.31 | 19.07

4.61

5.78

201001

9.96 | 9.94

22.29 | 22.27

4.68

5.94

201002

10.48 | 10.38

23.50 | 23.72

4.67

6.08

201003

11.12 | 11.11

24.29 | 24.47

5.37

10.10

201004

12.05 | 12.21

26.51 | 26.75

5.37

6.88

201005

16.38 | 16.60

33.34 | 34.56

8.38

10.36

201006

17.14 | 16.93

35.20 | 34.08

8.54

10.50

201007

20.01 | 20.67

39.74 | 41.52

9.62

13.17

201009

9.94 | 10.53

20.53 | 22.34

5.56

9.60

201010

10.45 | 10.44

23.38 | 23.02

5.00

6.37

201011

10.52 | 10.45

23.24 | 22.84

4.86

6.15

201012

10.36 | 10.45

22.86 | 23.16

4.87

6.14

201101

11.02 | 10.97

24.16 | 23.76

5.38

9.95

201102

10.91 | 10.99

24.38 | 25.60

4.95

6.24

201103

10.96 | 10.99

25.20 | 25.24

4.85

6.14

201104

12.76 | 12.80

29.19 | 29.39

5.54

7.12

201105

15.58 | 15.37

34.06 | 33.09

7.04

8.90

201106

19.29 | 19.22

40.96 | 40.99

9.12

11.12

201107

18.70 | 19.09

40.11 | 41.03

8.74

10.71

201109

11.05 | 10.92

23.64 | 22.72

5.20

6.73

201110

10.82 | 11.02

23.34 | 23.78

5.15

6.63

201111

13.15 | 12.86

29.03 | 28.23

6.41

9.16

201112

11.35 | 11.41

24.51 | 24.87

5.75

7.49

201201

13.66 | 13.67

30.82 | 31.41

5.73

7.38

201202

11.66 | 11.54

25.82 | 25.59

5.09

6.46

201203

14.09 | 14.03

32.18 | 31.75

5.30

6.78

201204

14.35 | 14.45

33.20 | 33.20

5.48

7.07

201205

17.27 | 17.44

37.74 | 38.03

7.69

9.68

201206

18.38 | 18.21

39.55 | 38.63

9.24

11.57

201207

21.84 | 22.38

49.22 | 49.70

10.85

15.88

201208

15.88 | 16.09

36.26 | 36.56

6.22

8.00

201209

12.52 | 12.57

28.39 | 28.27

5.68

7.95

201210

11.29 | 11.13

24.42 | 23.38

5.48

7.09

201211

11.98 | 11.98

26.56 | 26.80

5.51

7.49

201212

11.50 | 11.57

26.13 | 26.00

5.42

6.91

201301

10.72 | 10.92

22.81 | 23.40

5.49

7.14

201302

24.03 | 23.90

53.19 | 52.30

14.99

43.09

201303

10.87 | 10.85

23.34 | 23.26

5.29

6.84

201304

12.47 | 12.43

27.60 | 27.10

5.68

7.29

201305

18.18 | 18.67

39.63 | 40.27

8.09

11.03

201306

18.69 | 18.82

39.99 | 39.49

9.20

11.33

201307

18.74 | 18.90

40.56 | 40.99

8.73

10.88

201308

15.16 | 15.67

35.63 | 37.21

6.01

8.71

201309

11.97 | 11.78

26.19 | 25.13

5.70

7.51

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