Table 6 Ranges for grouping values of \(\triangle {_T}\).

From: Method for evaluating roughness and valley areas coefficients of surfaces acquired by laser scanner

Range

Lowest percentage

Highest percentage

Range 1

11.81

17.63

Range 2

17.63

23.46

Range 3

23.46

29.28

Range 4

29.28

35.10

Range 5

35.10

40.92