#filename = 'sext_dist.dat", column 3 or 10
set terminal pdf enhanced fontscale 0.75 size 6.0in, 4.0in
set timestamp offset graph 1.04,0.5 rotate font 'Verdana,6'
set label 'sext_dist..gnu' at graph 1.02,0.02 rotate left font 'Verdana,6' noenhance
set output 'sext_dist.pdf'
print 'sext_dist.pdf'
title = 'horizontal phase space'
set ylabel 'S [m^{-3}]'
set xlabel 'sextupole'
#set xrange [-2.5:2.5]
set yrange [-4.5:4.5]
plot filename u column  w i lw 6  lc 3 not