set terminal postscript enhanced color eps 20
set output "kem-delta.eps" 

set size 0.75,0.75

set ylabel "KLOC"
set xlabel "Kemerer Instances"

set xrange [0:14]
set yrange [0:500]

set arrow from 4,253 to 4,500 nohead lt -1 lw 0.8
set arrow from 9,130 to 9,500 nohead lt -1 lw 0.8

set arrow from 3,215 to 3,500 nohead lt 3 lw 1.2
set arrow from 5,215 to 5,500 nohead lt 3 lw 1.2

set arrow from 10,9.268 to 10,13.58 lt -1 lw 1
set arrow from 10,13.58 to 10,9.268 lt -1 lw 1

set arrow from 8,60 to 8,500 nohead lt 3 lw 1.2
set arrow from 10,60 to 10,500 nohead lt 3 lw 1.2

set arrow from 28,7.55 to 28,4.127 lt -1 lw 1
set arrow from 28,4.127 to 28,7.55 lt -1 lw 1

set arrow from 3,215 to 5,215 nohead lt 3  lw 1.8
set label "delta_{12}=38" at 1,160
set arrow from 2,180 to 2.8,240

set arrow from 8,60 to 10,60 nohead lt 3 lw 0.8
set label "delta_{23}=100" at 2,40
set arrow from 5.7,40 to 7.8,100

set nokey

set label "B_1" at 2,450  center
set label "B_2" at 7,450 center
set label "B_3" at 11,450 center

set ytics (0,60,160,215, 253,450)

plot 'kem-kloc.dat' using 1 with lines