diff --git a/allanplot.py b/allanplot.py
index 7996627..224bf42 100755
--- a/allanplot.py
+++ b/allanplot.py
@@ -13,98 +13,98 @@ RATE = 1
 #==============================================================================
 
 def parse():
-    """
-    Specific parsing procedure for Allan Deviation plotting tool.
-    :returns: populated namespace (parser)
-    """
-    parser = argparse.ArgumentParser(description = 'Plot Allan Deviation from timeseries file',
-                                     epilog = 'Example: \'./allanplot.py -f \'toto.dat\' -c 2 3\' compute and plot Allan Deviation form columns 2 and 3 of toto.dat')
-
-    parser.add_argument('-f',
-                        action='store',
-                        dest='filename',
-                        default=FILENAME,
-                        help='File(s) to import (default '+FILENAME+')')
-
-    parser.add_argument('-c',
-                        nargs = '+',
-                        action='store',
-                        dest='columns',
-                        default=COLUMNS,
-                        help='Columns to import (default '+str(COLUMNS)+')')
-
-    parser.add_argument('-r',
-                        action='store',
-                        dest='rate',
-                        default=RATE,
-                        help='Time rate in seconds (default '+str(RATE)+')')
-
-    parser.add_argument('-R',
-                        action='store_true',
-                        dest='rel',
-                        default=False,
-                        help='Relative ADev')
-
-    args = parser.parse_args()
-    return args
+	"""
+	Specific parsing procedure for Allan Deviation plotting tool.
+	:returns: populated namespace (parser)
+	"""
+	parser = argparse.ArgumentParser(description = 'Plot Allan Deviation from timeseries file',
+									 epilog = 'Example: \'./allanplot.py -f \'toto.dat\' -c 2 3\' compute and plot Allan Deviation form columns 2 and 3 of toto.dat')
+
+	parser.add_argument('-f',
+						action='store',
+						dest='filename',
+						default=FILENAME,
+						help='File(s) to import (default '+FILENAME+')')
+
+	parser.add_argument('-c',
+						nargs = '+',
+						action='store',
+						dest='columns',
+						default=COLUMNS,
+						help='Columns to import (default '+str(COLUMNS)+')')
+
+	parser.add_argument('-r',
+						action='store',
+						dest='rate',
+						default=RATE,
+						help='Time rate in seconds (default '+str(RATE)+')')
+
+	parser.add_argument('-R',
+						action='store_true',
+						dest='rel',
+						default=False,
+						help='Relative ADev')
+
+	args = parser.parse_args()
+	return args
 
 #==============================================================================
 
 def main():
-    """
-    Main script
-    """
-    # Parse command line
-    args = parse()
-    # filename
-    filename = args.filename
-    # columns
-    columns = map(int, args.columns)
-    # rate
-    rate = int(args.rate)
-    # rel
-    rel = bool(args.rel)
-
-    try:
-        list_files = []
-        filename = filename.split()
-        for name in filename:
-            list_files.extend(sorted(glob.glob(name)))
-
-        for name in list_files:
-            print(name)
-        data = []
-
-        for f in list_files:
-            with open(f, 'r') as dest_f:
-                data_iter = csv.reader(dest_f, delimiter = '\t', quotechar = '"')
-                temp_data = [value for value in data_iter]
-                data.extend(temp_data)
-
-        data = numpy.asarray(data, dtype = float)
-
-        del(temp_data, list_files, value, f)
-
-        g = Gnuplot.Gnuplot(persist = 1)
-        g('set logscale x')
-        g('set logscale y')
-        g('set grid')
-        g('set format y "%0.1e"')
-        g.xlabel('Tau (s)')
-        g.ylabel('Adev')
-
-        for i in columns:
-            if rel:
-                (tau2, ad, ade, adn) = allantools.adev(data[:,i]/data[:,i].mean(), rate=rate, data_type="freq", taus='decade')
-            else:
-                (tau2, ad, ade, adn) = allantools.adev(data[:,i], rate=rate, data_type="freq", taus='decade')
-            g.replot(Gnuplot.Data(tau2, ad, ade, with_='yerrorbars', title='%s : %s'%(name, str(i))))
-
-    except Exception as ex:
-            print 'Oups '+str(ex)
-    print 'Program ending\n'
+	"""
+	Main script
+	"""
+	# Parse command line
+	args = parse()
+	# filename
+	filename = args.filename
+	# columns
+	columns = map(int, args.columns)
+	# rate
+	rate = int(args.rate)
+	# rel
+	rel = bool(args.rel)
+
+	try:
+		list_files = []
+		filename = filename.split()
+		for name in filename:
+			list_files.extend(sorted(glob.glob(name)))
+
+		for name in list_files:
+			print(name)
+		data = []
+
+		for f in list_files:
+			with open(f, 'r') as dest_f:
+				data_iter = csv.reader(dest_f, delimiter = '\t', quotechar = '"')
+				temp_data = [value for value in data_iter]
+				data.extend(temp_data)
+
+		data = numpy.asarray(data, dtype = float)
+
+		del(temp_data, list_files, value, f)
+
+		g = Gnuplot.Gnuplot(persist = 1)
+		g('set logscale x')
+		g('set logscale y')
+		g('set grid')
+		g('set format y "%0.1e"')
+		g.xlabel('Tau (s)')
+		g.ylabel('Adev')
+
+		for i in columns:
+			if rel:
+				(tau2, ad, ade, adn) = allantools.adev(data[:,i]/data[:,i].mean(), rate=rate, data_type="freq", taus='decade')
+			else:
+				(tau2, ad, ade, adn) = allantools.adev(data[:,i], rate=rate, data_type="freq", taus='decade')
+			g.replot(Gnuplot.Data(tau2, ad, ade, with_='yerrorbars', title='%s : %s'%(name, str(i))))
+
+	except Exception as ex:
+			print 'Oups '+str(ex)
+	print 'Program ending\n'
 
 #==============================================================================
 
 if __name__ == "__main__":
-    main()
+	main()