Visualization of reliability and SMR. Top: A reliability visualization of the eight SaTScan runs mapped in Figure 3. The reliability values are classified into eight categories (one category for each possible value); darker shading represents a higher reliability. Boundaries of the heterogeneous clusters (A, C, and H) and the core clusters (B, D, E, F, and G) marked in Figure 3 are also marked here for comparison. Bottom: A choropleth map of SMR filtered to show only those counties with a reliability score above '0.875' (the top two classes in Figure 4, top). Boundaries of the core clusters are marked. The clusters above are manually circled and labelled for illustration purposes.