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Intended Use of the Geomagnetic Field CalculatorsWe are interested in your intended use of the magnetic field calculators. By filling out the following form, you will help us improve service and strengthen future calculators. All responses and information that you provide are voluntary. The information you provide is used only by NOAA's National Geophysical Data Center to support the magnetic field calculators. By clicking the "Submit" button you grant consent to the use of the voluntarily provided information. |