Table 2. Descriptive statistics of angulation deviations of reference board alignment for 3dMD, N = 67.

Angulation deviation for three operators			N = 67	M = 1
	SD/°	Median/°	Min/°	Max/°
Pitch	0.023345	0.001	-0.075296	0.051859
Roll	0.092389	-0.007924	-0.158411	0.179983
Yaw	0.042495	0.003002	-0.115625	0.10353