Fig. 4. Cumulative increases in erosive strength (E_s) in aggregates, (A) 6.3 to 9.5 mm and (B) 4 to 6.3 mm, from Hoytville silty clay loam soils at depths from 0 to 5 cm, as aggregates were peeled in SAE chambers. These E_s lines were obtained by taking average of E_s values fitted in a regression Eq. [6] for each aggregate (Table 1). R² values represent a measure of closeness between measured data and fitted lines for each treatment.