Purpose: This is a helper procedure that will set the maximum and minimum for a given mnemonic within a specific time range (used by thm_fitmom_overviews and thm_fitgmom_overviews) Example: thm_fitmom_overviews,'2007-03-23','b',dir='~/out',device='z' $LastChangedBy: lphilpott $ $LastChangedDate: 2012-06-15 12:50:32 -0700 (Fri, 15 Jun 2012) $ $LastChangedRevision: 10570 $ $URL: svn+ssh://thmsvn@ambrosia.ssl.berkeley.edu/repos/spdsoft/trunk/projects/themis/common/thm_set_lim.pro $