PROCEDURE: MVN_SWIA_CALC_BCRUSTAL PURPOSE: Routine to calculate crustal magnetic field (uses Dave Brain's routine) AUTHOR: Jasper Halekas CALLING SEQUENCE: MVN_SWIA_CALC_BCRUSTAL INPUTS: KEYWORDS: TR: Time range (prompts to choose interactively if not set) PDATA: Tplot variable for position (defaults to MSO), return will have same number of components (make sure this has 'SPICE_FRAME' set or you will fail) $LastChangedBy: jhalekas $ $LastChangedDate: 2014-11-17 09:08:14 -0800 (Mon, 17 Nov 2014) $ $LastChangedRevision: 16194 $ $URL: svn+ssh://thmsvn@ambrosia.ssl.berkeley.edu/repos/spdsoft/trunk/projects/maven/swia/mvn_swia_calc_bcrustal.pro $