# CsDev—Cell Size Standard Deviation > [!note] Questa pagina non è ancora tradotta e viene visualizzata in inglese. The Cell Size Standard Deviation reflects the variation in cell sizes across the surface. By dividing the standard deviation by the mean cell size, the resulting value is normalized, allowing for comparability between different types of structures. This index indicates how much the sizes of the cells vary from the average, helping to understand the consistency of the surface structure.