Figure 3
From: How levelling and scan line corrections ruin roughness measurement and how to prevent it

Ratio L/T in real-world roughness measurements: (a) overview of scan area size (along the fast axis) and correlation length of the surface; (b) ratio L/T as a function of journal impact factor (with our data added at 1.0); (c) ratio L/T as a function of scan line length L. Points and bars in (b) and (c) represent medians and upper and lower quartiles.