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Earth, Planets and Space
Fig. 12 | Earth, Planets and Space

Fig. 12

From: Verification of the geomagnetic field models using historical satellite measurements obtained in 1964 and 1970

Fig. 12Fig. 12

Z component of the geomagnetic field measured continuously at nine magnetic observatories over 1955–1980 and predicted by different models for 1964/1965 and 1970. IAGA codes of the observatories are indicated in the upper right of each plot. The blue line shows the observatory data (monthly means), red circles show IGRF values for the beginning of 1965 and 1970, green circles show the M-1 and M-2 values and blue circles show the N-1 and N-2 values for 1964 and 1970. Data from CLF, FRD, VIC and GNA observatories are corrected for crustal biases according to (Verbanac et al. 2015)

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