Table 1.

Results of the modularity analysis on real networks

Network	No. of modules (Qmax)	Total no. of modules (Q)
Yeast	9 (0.740)	57 (0.677)
E. coli	27 (0.752)	76 (0.661)
Elect. circuit	11 (0.670)	70 (0.640)
Social	10 (0.608)	21 (0.532)
C. elegans	4 (0.408)	20 (0.319)

In the second column, we report the number of modules detected in the partition obtained for the maximal modularity. However, these modules contain submodules; in the third column we report the total number of submodules we found and the corresponding value of the modularity of the partition, which is lower than the peak modularity initially found.