crib_tt89 Purpose: demonstrates the use of the tt89 procedure. This procedure is tplot based version of the Tsyganenko 89 magnetic fields model Notes: Haje Korth's IDL/Geopack DLM must be installed for this to work $LastChangedBy: pcruce $ $LastChangedDate: 2013-12-16 17:16:12 -0800 (Mon, 16 Dec 2013) $ $LastChangedRevision: 13685 $ $URL: svn+ssh://thmsvn@ambrosia.ssl.berkeley.edu/repos/spdsoft/trunk/external/IDL_GEOPACK/examples/crib_tt89.pro $