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Table 3 Statistics of residuals between DGRF-2015 candidates and Swarm A/B measurements (equatorward of \(\pm 55^{\circ }\) QD latitude) from 15 December 2014 to 15 January 2015

From: Evaluation of candidate models for the 13th generation International Geomagnetic Reference Field

 

\(B_x\)

\(B_y\)

\(B_z\)

|B|

 

N

Mean (nT)

\(\sigma\) (nT)

Mean (nT)

\(\sigma\) (nT)

Mean (nT)

\(\sigma\) (nT)

Mean (nT)

\(\sigma\) (nT)

B

21,113

0.93

4.45

1.37

4.65

− 0.41

3.87

0.11

3.81

CM

21,113

1.41

4.28

1.29

4.58

− 0.38

3.96

1.53

3.75

CU

21,113

1.05

4.45

1.34

4.64

− 0.49

3.96

0.36

3.66

D

21,113

1.15

4.39

1.32

4.65

− 0.52

3.82

0.66

3.74

G

21,113

0.25

4.41

1.29

4.63

− 0.34

3.97

− 0.60

3.88

IP

21,113

1.12

4.38

1.32

4.63

− 0.52

3.99

0.83

3.84

IS

21,113

− 1.14

4.97

0.79

5.02

− 1.00

7.32

− 3.00

5.31

IZ

21,113

0.58

4.86

1.47

4.83

− 0.28

4.84

0.85

4.37

N

21,113

0.19

4.87

1.38

4.75

− 0.42

4.14

− 1.87

3.65

P

21,113

0.65

4.40

1.26

4.62

− 0.53

3.83

0.04

3.76

S

21,113

0.43

4.48

1.13

4.59

0.16

4.58

0.11

4.50

M

21,113

0.60

4.39

1.27

4.61

− 0.43

4.04

− 0.09

3.84

\(M_{\text{med}}\)

21,113

0.89

4.39

1.30

4.60

− 0.45

3.88

0.39

3.80

Robust

21,113

0.71

4.39

1.29

4.62

− 0.43

3.94

0.06

3.80

  1. Vector components are given in the NEC frame