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. 2022 Apr 19;9(2):364–375. doi: 10.1089/soro.2020.0108

Table 3.

Calculated Efficiency = 1 – [M(friction)/M(output)]

  Efficiency (%)
Average of all data 95.0
Maximum efficiency 97.1

The average efficiency is calculated by integrating the curve (Fig. 8b, green dashed) and dividing it by the interval length, avoiding the influence of irregular sample spacing.