Table 3.

Calibration matrix obtained by inverting the matrix S reported in Table 1.

	p1	p2	p3	p4	p5	p6
σx	−0.614	0.090	−0.125	−0.202	−0.038	0.129
σy	−0.017	−0.596	−0.089	−0.137	0.043	−0.003
σz	−0.036	−0.011	−0.383	−0.006	−0.141	−0.152
τxy	0.164	0.113	−0.038	−0.301	0.034	0.058
τyz	0.016	0.188	0.174	0.031	−0.316	−0.006
τxz	0.132	−0.095	0.203	0.077	0.104	−0.318