set terminal png
set output "25n252R12C2Q2H40L.png"
set size 0.6, 0.6
set ylabel "Blocking Ratio(%)"
set xlabel "Bandwidth Requirment"
set yrange [0:100]
set xrange [0:20]
set xtics 0, 5, 20
set ytics 0, 20, 100
set key right bottom box
#set title ""
plot "25n252R12C2Q2H40L.txt" using 1:2 title 'p=0.5' w linesp 1, '' using 1:3 title 'p=0.6' w linesp 2, '' using 1:4 title 'p=0.7' w linesp 3, '' using 1:5 title 'p=0.8' w linesp 4, '' using 1:6 title 'p=0.9' w linesp 5