Table 4-2. Mean marker distance errors for nominal values and the two-level
 optimization results for multi-cycle experimental marker data.

 Experimental Data Hip Knee Ankle

 Nominal mean
 marker distance 0.499889 + 0.177947 1.139884 + 0.618567 0.885437 + 0.478530
 error (cm)

 Optimum mean
 marker distance 0.342262 + 0.167079 0.547787 + 0.269726 0.356279 + 0.126559
 error (cm)

 Mean marker
 distance error 0.157627 + 0.166236 0.592097 + 0.443680 0.529158 + 0.438157
 attenuation (cm)