Summary of the surface topography state corresponding to conditions A, B, C and D.
|Concentration||Surface scratch||Ploughing||Other phenomenon|
|0%||Many||Many and deep||Local spalling|
|1.0%||Obvious||Many and deep||Local spalling|
|2.0%||Obvious||Few and shallow||Wide-range spot|
|4.0%||Few||Few and shallow||Local spalling|
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