PROCEDURE: thm_load_esa_mag PURPOSE: Add magnetometer data to the ESA structures INPUT: KEYWORDS: probe: strarr themis spacecraft - "a", "b", "c", "d", "e" if not set defaults to all sc: strarr themis spacecraft - "a", "b", "c", "d", "e" if not set defaults to all themishome: string path to data dir, where data dir contains the th* dir, where *=a,b,c,d,e datatype string or 0/1 if not set, uses fgs if set to 1, uses fgl if string, uses string data type fgl and fge data averaged by "time_average" with resolution=2s before interpolation all mag data are interpolated to center of esa data collection CREATED BY: J. McFadden 07/05/27 VERSION: 1 LAST MODIFICATION: 08/04/16 MOD HISTORY: 08/04/16 added probe keyword 09/04/29 changed from time_average to smooth_in_time NOTES: