diff --git a/miniattack/gui.py b/miniattack/gui.py
index 9e99495..1589b2b 100644
--- a/miniattack/gui.py
+++ b/miniattack/gui.py
@@ -18,7 +18,7 @@ def draw_figure(canvas, figure):
     return figure_canvas_agg
 
 
-def gui(data, itfs=[]):
+def gui(data, attack_range, itfs=[]):
     # Calculate dynamic size
     if len(itfs) == 0 or len(itfs) >= 8:
         cols = 4
@@ -40,7 +40,7 @@ def gui(data, itfs=[]):
 
     plt.figure(1)
 
-    # Show topology image
+    # Show the topology image
     imp = path.join(path.dirname(__file__), '..', 'docs', 'topo.jpg')
     imp = path.abspath(imp)
     img = mpimg.imread(imp)
@@ -54,11 +54,12 @@ def gui(data, itfs=[]):
         if len(itfs) > 0 and k not in itfs:
             continue
         plt.subplot(rows, cols, i)
-        y = data[k]
-        x = [str(t) for t in range(len(y))]
+        y = data[k]['load']
+        x = data[k]['time']
         plt.plot(x, y)
         plt.title(k)
         plt.ylabel('bits/s')
+        plt.axvspan(*attack_range, color='red', alpha=0.1)
         plt.xticks([])
         i += 1
 
@@ -74,17 +75,15 @@ def gui(data, itfs=[]):
     pp.savefig()
     pp.close()
 
+    # Confiure PySimpleGUI
     layout = [
         [sg.Column([[sg.Canvas(key='-C1-')]], key='-COL1-', scrollable=True)],
     ]
-
     window = sg.Window(
         'Mininet Attack Test',
         layout, finalize=True, resizable=True, element_justification='center', font='Helvetica 18', keep_on_top=True, size=(800, 600)
     )
-
     draw_figure(window['-C1-'].TKCanvas, fig)
     window['-COL1-'].expand(True, True)
-
     event, values = window.read()
     window.close()
diff --git a/miniattack/net.py b/miniattack/net.py
index b96a59d..07fa7fe 100644
--- a/miniattack/net.py
+++ b/miniattack/net.py
@@ -2,7 +2,7 @@
 import os
 import csv
 from subprocess import Popen
-from time import sleep
+from time import sleep, time
 from mininet.log import setLogLevel, info
 from mininet.net import Mininet
 from mininet.util import dumpNodeConnections
@@ -29,8 +29,10 @@ def run(self):
         self.start_monitor()
         sleep(self.idle_dur)
         self.start_attack()
+        self.ast = time()
         sleep(self.attack_dur)
         self.stop_attack()
+        self.aet = time()
         sleep(self.idle_dur)
         self.stop_monitor()
         self.fill_data()
@@ -99,17 +101,21 @@ def fill_data(self):
             csvr = csv.reader(csvf, delimiter=',')
             for row in csvr:
                 key = row[1]
-                value = float(row[4]) * 8
+                tme = float(row[0])
+                load = float(row[4]) * 8
                 if key in self.data:
-                    self.data[key].append(value)
+                    self.data[key]['time'].append(tme)
+                    self.data[key]['load'].append(load)
                 else:
-                    self.data[key] = []
+                    self.data[key] = {}
+                    self.data[key]['time'] = []
+                    self.data[key]['load'] = []
 
     def plot(self):
         """Pass the loaded output of bwm-ng to gui to plot"""
         info('*** Plot\n')
         self.itfs = [t for t in self.itfs if t in self.data]
-        gui(self.data, self.itfs)
+        gui(self.data, (self.ast, self.aet), self.itfs)
 
     def remove_tmp(self):
         """Remove the output file of bwm-ng if already exists"""