Fig. 3

Histograms of the absolute sensitivities (left panel) and absolute sensitivity densities (right panel) for the core region (grey) and exterior (white). The bins cover 0.1 intervals. The sensitivity density is divided by the volume of the corresponding element to avoid biasing from large elements. The setup criteria (10^1.2 in absolute sensitivity and 10^−7.5 in sensitivity density) of the lower limit of relatively high-sensitive elements are indicated by thick lines