Update README.md

README.md

@@ -30,6 +30,7 @@ was created by School of Electronic and Information Engineering, South China Uni
 
 ### Speech Statistic
 
+| Duration Statisitc         | Duration                                          |
 | -------------------------- |:-------------------------------------------------:|
 | Num. of Clips              | 2,150                                             |
 | Total Duration             | 13347.835 seconds = 222.464 minutes = 3.708 hours |
@@ -81,6 +82,7 @@ was created by School of Electronic and Information Engineering, South China Uni
 
 ### Non-Speech Statistic
 
+| Duration Statisitc         | Duration                                          |
 | -------------------------- |:-------------------------------------------------:|
 | Num. of Clips              | 5,484                                             |
 | Total Duration             | 14438.117 seconds = 240.635 minutes = 4.011 hours |