Drilling stage (mm)	Strain values in particular directions
h	       		epsilon a     epsilon b	    epsilon c
0.50   			-16.00	      -9.00   	    -6.00    
1.00   			-38.00	      -22.00   	    -8.00 
1.50   			-50.00	      -32.00   	    -5.00 
2.00   			-65.00	      -48.00   	    -2.00 
2.50   			-72.00	      -55.00   	    2.00  
3.00   			-80.00	      -63.00   	    4.00  
3.50   			-85.00	      -67.00   	    5.00  
4.00   			-89.00	      -81.00   	    6.00  
4.50   			-93.00	      -83.00   	    8.00  
5.00   			-100.00	      -85.00   	    9.00