Table 2 Root-mean-square vector field differences \(_{i,j}T\) in units of nT between DGRF-2015 candidate models and also between candidates and the arithmetic mean reference models M, median reference model \(M_{\text{med}}\) and robust Huber-weighted in the rightmost columns
From: Evaluation of candidate models for the 13th generation International Geomagnetic Reference Field
\(_{i,j}T\)/nT | B | CM | CU | D | G | IP | IS | IZ | N | P | S | M | \(M_{\text{med}}\) | robust |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
B | 0.00 | 4.51 | 2.53 | 2.17 | 2.68 | 2.63 | 8.53 | 6.54 | 4.43 | 2.53 | 6.12 | 2.25 | 2.02 | 1.97 |
CM | 4.51 | 0.00 | 3.77 | 3.21 | 4.69 | 3.13 | 8.87 | 7.44 | 6.18 | 3.85 | 6.09 | 3.45 | 3.22 | 3.37 |
CU | 2.53 | 3.77 | 0.00 | 1.70 | 3.13 | 2.05 | 8.23 | 6.83 | 4.26 | 2.71 | 5.84 | 1.96 | 1.74 | 1.75 |
D | 2.17 | 3.21 | 1.70 | 0.00 | 2.77 | 1.15 | 8.30 | 6.48 | 4.41 | 1.80 | 5.87 | 1.52 | 0.93 | 1.11 |
G | 2.68 | 4.69 | 3.13 | 2.77 | 0.00 | 3.12 | 8.27 | 6.17 | 4.22 | 2.36 | 5.71 | 2.12 | 2.31 | 2.11 |
IP | 2.63 | 3.13 | 2.05 | 1.15 | 3.12 | 0.00 | 8.19 | 6.50 | 4.88 | 2.08 | 5.82 | 1.76 | 1.25 | 1.47 |
IS | 8.53 | 8.87 | 8.23 | 8.30 | 8.27 | 8.19 | 0.00 | 11.39 | 9.06 | 8.01 | 10.04 | 7.57 | 8.06 | 7.89 |
IZ | 6.54 | 7.44 | 6.83 | 6.48 | 6.17 | 6.50 | 11.39 | 0.00 | 7.87 | 6.43 | 8.09 | 6.01 | 6.23 | 6.14 |
N | 4.43 | 6.18 | 4.26 | 4.41 | 4.22 | 4.88 | 9.06 | 7.87 | 0.00 | 4.39 | 6.96 | 4.04 | 4.32 | 4.07 |
P | 2.53 | 3.85 | 2.71 | 1.80 | 2.36 | 2.08 | 8.01 | 6.43 | 4.39 | 0.00 | 5.84 | 1.69 | 1.58 | 1.46 |
S | 6.12 | 6.09 | 5.84 | 5.87 | 5.71 | 5.82 | 10.04 | 8.09 | 6.96 | 5.84 | 0.00 | 5.12 | 5.42 | 5.32 |
Mean Diff | 4.27 | 5.18 | 4.11 | 3.79 | 4.31 | 3.96 | 8.89 | 7.37 | 5.66 | 4.00 | 6.64 | 3.41 | 3.37 | 3.33 |