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Table 3 RMS vector field differences i,j R in units nT between DGRF-2010 candidate models and also between candidates and the arithmetic mean reference models M and median reference model M med in the rightmost columns. The bottom two rows are simple arithmetic means \({~}_{i}\!\,\overline {R}\) of the i,j R where the means include all candidates

From: Evaluation of candidate geomagnetic field models for IGRF-12

i,j R / nT

A

B

C

D

E

F

G

M

M med

A

0.00

2.76

6.61

4.01

2.40

2.55

4.92

1.97

1.70

B

2.76

0.00

7.06

4.91

2.04

2.37

5.38

2.50

1.96

C

6.61

7.06

0.00

7.28

6.72

7.66

5.81

5.45

5.99

D

4.01

4.91

7.28

0.00

4.27

4.52

5.66

3.53

3.72

E

2.40

2.04

6.72

4.27

0.00

2.42

4.81

1.92

1.51

F

2.55

2.37

7.66

4.52

2.42

0.00

5.47

2.68

2.18

G

4.92

5.38

5.81

5.66

4.81

5.47

0.00

3.69

4.19

Mean Diff

3.88

4.09

6.86

5.11

3.78

4.17

5.34

3.10

3.04