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(a–e) 
calculated from EPNs for the heterogeneous examples of table 1 (black solid curve, unclustered 
0; black dashed curve, 
0,0; grey solid curve, 
0,1; dotted curve, 
0,2; dot-dashed curve, 
0,3; grey dashed curve, 
0,4). (f) 
0,1 values for all of the different cases, including both unclustered 
0 (solid curve) and homogeneous 
0,1 (dotted curve) are compared.
