diff --git a/wifitables/report.py b/wifitables/report.py
index 9ea993b..8ee0fac 100755
--- a/wifitables/report.py
+++ b/wifitables/report.py
@@ -256,14 +256,14 @@
       width = int(m.group(1))
 
     # Noise and contention not yet gathered in samples run on Linux systems.
-    line += [channel, width, signal, '', '', '']
+    line += [channel, width, signal, None, None, None]
 
   mpath = os.path.join(report_dir, 'mcs')
   if os.path.isfile(mpath):
     with open(os.path.join(report_dir, 'mcs')) as mf:
       line += ParseMCSFile(mf, width)
   else:
-    line += ['', '']
+    line += [None, None]
 
   # If the initial ping test fails, we won't collect performance information.
   # deal with this gracefully.
@@ -306,11 +306,12 @@
     o.fatal("didn't find any samples. did you supply at least one report dir"
             ' or journal?')
 
-  print '\t'.join(['Steps', 'Channel', 'Width', 'RSSI', 'Noise', 'Shared',
-                   'Interfering', 'MCS', 'PHY', 'TCP BW', '(Units)', 'UDP BW',
-                   '(Units)'])
-  for line in lines:
-    print '\t'.join(str(i) for i in line)
+  header = ['Steps', 'Channel', 'Width', 'RSSI', 'Noise', 'Shared',
+            'Interfering', 'MCS', 'PHY', 'TCP BW', '(Units)', 'UDP BW',
+            '(Units)']
+  writer = csv.writer(sys.stdout, delimiter='\t', quoting=csv.QUOTE_MINIMAL)
+  writer.writerow(header)
+  writer.writerows(lines)
 
 
 if __name__ == '__main__':