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Earth, Planets and Space
Fig. 1 | Earth, Planets and Space

Fig. 1

From: Bootstrapping Swarm and observatory data to generate candidates for the DGRF and IGRF-13

Fig. 1

a, d Spatial distributions of Swarm A data according to the quasi-dipole latitude and time in modified Julian days. b, e Temporal histograms of the number of data (scalar and vector) using bins 5 days wide. c, f Number of Swarm A data as a function of the quasi-dipole latitude (bins every 2°). Upper panel: Swarm A data for DGRF parent model and modified Julian days relative to 2015.0. Lower panel: Swarm A data for IGRF parent model and modified Julian days relative to 2019.16

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