Table 6.

Crack depth measured by ultrasound equipment (units: cm).

Cracks	1%	0%
F1	1.50	1.90
F2	X 1	1.73
F3	X	1.83
F4	X	1.67
F5	X	1.81
F6	X	1.97
F7	X	2.50
F8	X	1.70
F9	X	2.50
F10	X	1.50
Max. depth	1.50	2.50
Min. depth	1.50	1.50

¹ “X” represents measurements below 1.5 and, thus, cannot be considered “1.5”.