diff --git a/downloadversionIRdata.py b/downloadversionIRdata.py
index 5068da53d6333af58f966d460b38de2f0284cdce..caf3503970aa4977127e6df2a0b4b6cc0b9df32c 100644
--- a/downloadversionIRdata.py
+++ b/downloadversionIRdata.py
@@ -453,7 +453,7 @@ def download_raw_images_by_times(port,starttime,stoptime,version=1,intervalSize=
                 else:
                     allimages=allimages+images#np.append(ressignal,signal,axis=0)
                     time=np.append(time,t)
-                del signal,t
+                del images,t
             except urllib.error.URLError as e:
                 print(e)                
         return True,time,allimages
@@ -1389,7 +1389,9 @@ if __name__=='__main__':
     plt.plot(time,max1,label="max V1")        
     plt.plot(time,max2,label="max V2")        
     plt.plot(time,ave1,label="average V1")        
-    plt.plot(time,ave2,label="average V2")        
+    plt.plot(time,ave2,label="average V2")
+    plt.legend()
+    plt.savefig('20171129.036 - T calibration comparison.png', dpi=300, bbox_inches='tight')
 #    background1,LUT1,refT1,gain1,offset1,badpixels1,t_exp1,cfilter1=get_calib_data(41,"20171024.016",0.8,1,version=1)
 ##    background2,LUT2,refT2,gain2,offset2,badpixels2,t_exp2,cfilter2=get_calib_data(51,"20171024.016",0.8,2,version=1)
 #    prog=AKF_1.get_program_from_PID("20171024.015")