Table 5.

The mean measured errors of the tests

Test	A	B	C	D	E	F
Mean measured distraction length error (mm)	0.07	0.16	0.09	0.17	0.03	0.05
Mean calculated distraction rate error (mm/day)	0.03	0.04	0.02	0.02	0.003	0.002
Mean calculated step error (nm)	0.05	0.06	0.06	0.06	0.02	0.02
DL error rate (%)	0.7	0.8	0.9	0.85	0.3	0.25
DR error rate (%)	3	4	2	2	0.3	0.2
Mean calculated step error rate (%)	5	6	6	6	2	2