#filename = 'vertical_phase_space_de0.dat"
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 'v_phase_space.gnu' at graph 1.02,0.02 rotate left font 'Verdana,6' noenhance
set output 'v_phase_space.pdf'
print 'v_phase_space.pdf'
title = 'horizontal phase space'
set ylabel 'p_y [mrad]'
set xlabel 'y [mm]'
set xrange [-2.5:2.5]
set yrange [-2:2]
plot filename u ($4*1000):($5*1000)  ps 0.2 pt 7 lc 2 not