Table 7: Average values (computed over the four procedures) and standard deviation of roughness Ra measured in the experi-mental tests. Statistical comparisons (Tukey post-hoc test, Control Group A) are shown in the last column.
|
A [mm] |
B [mm] |
C [mm] |
D [mm] |
Comparison vs A |
mean |
1.253 |
0.533 |
0.955 |
0.513 |
B, D |
Std dev |
0.535 |
0.401 |
0.449 |
0.316 |