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Table 2 Error statistics of the calibration algorithms using matrices on the experimental data

From: Non-orthogonal one-step calibration method for robotized transcranial magnetic stimulation

Alg Para Min 25th Med 75th Max
QR24 Translational error (mm)
 etrans[Op] 0.3263 0.3296 0.3272 0.3331 1.4110
 etrans[OM] 0.2787 0.2845 0.2787 0.2854 1.1929
 e z 0.3301 0.5024 0.5935 0.6995 5.7679
 e t 0.9353 1.1166 1.1995 1.3181 8.3719
 P n 247 109 200 81 5
Rotational error (°)
 θ p 0.1882 0.1889 0.1886 0.1883 0.2157
 θ m 0.1584 0.1590 0.1583 0.1583 0.1825
 θ z 0.0005 0.0003 0.0030 0.0069 0.0832
 θ t 0.3466 0.3482 0.3500 0.3536 0.4815
 P n 176 88 190 127 5
QR36 Translational error (mm)
 etrans[Op] 0.3256 0.3261 0.3277 0.3353 0.6580
 etrans[OM] 0.2781 0.2797 0.2807 0.2873 0.5803
 e z 0 0 0 0 0
 e t 0.6037 0.6059 0.6084 0.6226 1.2384
 P n 250 227 132 73 6
Rotational error (°)
 θ p 0.1880 0.1883 0.1885 0.1893 0.2074
 θ m 0.1583 0.1584 0.1584 0.1586 0.1674
 θ z 0 0 0 0 0
 θ t 0.3464 0.3467 0.3470 0.3480 0.3749
 P n 141 128 217 68 7