From: Evaluation of candidate models for the 13th generation International Geomagnetic Reference Field
2015–2020 | B-12 | CU-12 | D-12 | G-12 | IP-12 | IS-12 | IZ-12 | LN-12 | N-12 | M | \(M_{\text{med}}\) | IGRF-12 |
---|---|---|---|---|---|---|---|---|---|---|---|---|
\({\text{d}}B_x/{\text{d}}t\) | 11.76 | 12.10 | 11.64 | 11.53 | 11.20 | 11.68 | 12.41 | 11.65 | 12.81 | 11.47 | 11.31 | 11.47 |
\({\text{d}}B_y/{\text{d}}t\) | 9.35 | 11.22 | 11.24 | 10.92 | 10.64 | 12.99 | 12.04 | 11.05 | 10.37 | 10.71 | 10.87 | 10.75 |
\({\text{d}}B_z/{\text{d}}t\) | 18.42 | 19.2 | 18.54 | 17.78 | 17.33 | 19.73 | 21.60 | 19.41 | 22.16 | 18.39 | 18.03 | 18.50 |