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Use the Madrigal page Run Models->Calculate any Madrigal parameter for a given time and range of lat, lon, and alt to calculate the shadow height (SDWHT) and magnetic field vector (BN,BE,BD) 1000 km directly above PFISR (lat 65.130, lon -147.471) at 2007-03-27 12:00:00 UT.
(Alternate Web interface exercises page)