Fixed wrong min values

git-svn-id: https://thermopower.svn.sourceforge.net/svnroot/thermopower/trunk@259 80daafeb-7430-0410-91d5-8b30b0bbd841
Fixed wrong min values

git-svn-id: https://thermopower.svn.sourceforge.net/svnroot/thermopower/trunk@260 80daafeb-7430-0410-91d5-8b30b0bbd841