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![Average magnetic field strength as a function of height for the North... | Download Scientific Diagram Average magnetic field strength as a function of height for the North... | Download Scientific Diagram](https://www.researchgate.net/publication/45918787/figure/fig7/AS:669305964355587@1536586385184/Average-magnetic-field-strength-as-a-function-of-height-for-the-North-polar-region-and.png)