The author name Mahwish Waheed should be replaced with Mehwish Waheed.
In the body of the paper, (from , , to , ) should be replaced with the following values (from , to , ); (from , , to , n.s.) should be replaced with the following values (from , to , n.s.); (from , , to , ) should be replaced with the following values (from , to , ); (from , , to , n.s.) should be replaced with the following values (from , to , n.s.).Figure 1 is corrected as follows.