PROCEDURE: MVN_SWIA_ADD_MAGF PURPOSE: Add magnetic field (in SWIA coordinates) to SWIA fine and coarse common blocks INPUT: KEYWORDS: BDATA: tplot variable for the magnetic field (will be converted to 'MAVEN_SWIA' frame - so needs 'SPICE_FRAME' defined to work) AUTHOR: J. Halekas $LastChangedBy: jhalekas $ $LastChangedDate: 2014-10-10 08:45:32 -0700 (Fri, 10 Oct 2014) $ $LastChangedRevision: 15973 $ $URL: svn+ssh://thmsvn@ambrosia.ssl.berkeley.edu/repos/spdsoft/trunk/projects/maven/swia/mvn_swia_add_magf.pro $