set terminal postscript enhanced eps 
set output "china-delta.eps" 

set size 0.75,0.75

set ylabel "PDR-AFP"
set xlabel "China Instances"

set xrange [0:500]
set yrange [0:85]

set arrow from 166,0 to 166,85 nohead lt -1 lw 0.8
set arrow from 333,0 to 333,85 nohead lt -1 lw 0.8

set arrow from 124.5,0 to 124.5,85 nohead lt 3 lw 1.2
set arrow from 207.5,0 to 207.5,85 nohead lt 3 lw 1.2

set arrow from 291.5,0 to 291.5,85 nohead lt 3 lw 1.2
set arrow from 374.5,0 to 374.5,85 nohead lt 3 lw 1.2

set label "B_1" at 83,70  center
set label "B_2" at 250,70 center
set label "B_3" at 416,70 center

set nokey

plot 'china-PDRAFP.dat' using 1 with lines