set terminal png
set output "ran3c12channel.png"
set size 0.6, 0.6
set ylabel "Blocking Ratio(%)"
set xlabel "Bandwidth Requirment"
set yrange [0:100]
set xrange [0:25]
set xtics 0, 5, 25
set ytics 0, 20, 100
set key right bottom box
#set title ""
plot "ran3c12channel.txt" using 1:2 title 'BGRP' w linesp 1, '' using 1:3 title 'SPR' w linesp 2