Fig. 7

Overall vertical displacement cloud image: (a) step 1; (b) step 3; (c) step 5; (d) step 7; (e) step 8; (f) step 9; (g) step 10; (h) step 11; (i) step 13.

Overall vertical displacement cloud image: (a) step 1; (b) step 3; (c) step 5; (d) step 7; (e) step 8; (f) step 9; (g) step 10; (h) step 11; (i) step 13.