Table 1. Statistical analysis of torsions.

Specimen	Mean	Standard deviation	Maximum	Minimum	Times
Mild	-0.024	0.086	0.121	-0.194	0
Moderate	-0.061	0.190	0.210	-0.731	1
Severe	0.047	0.323	0.965	-0.946	4

Note.—Times indicate statistical numbers when the absolute value of the normalized torsion is higher than 0.5.