Fig. 11From: Evaluation of candidate models for the 13th generation International Geomagnetic Reference FieldComparison of the \({\text{d}}B_z/{\text{d}}t\) component (NEC frame) of the IGRF-13 SV-2020-2025 candidates to selected observatory time-series over the 2015 to 2020 interval. The 2015–2020 SV values are from the IGRF-12 predictionBack to article page