Table 4 Treatment efficiency multi-comparison analysis for all studied techniques (mean ± SD). Mean values with ^ǂ symbol demonstrate that the corresponding technique did not pass the normality test. Friedman test of significance (p < 0.05) was used in these cases; otherwise, repeated measures ANOVA significance test was used

MU

425 ± 72^{ǂ b}

411 ± 73^{ǂ b}

442 ± 58^b

1016 ± 152^a

Estimated Treatment Time (min)

3.3 ± 0.7^ab

3.3 ± 0.6^{ǂ b}

2.8 ± 0.5^{ǂ ab}

2.9 ± 1.5^{ǂ a}