Sub-cluster Analysis:

SC-019 [1258]  (#Grp: {6, 7})

SC-020 [34000]  (#Grp: {5, 6, 7})

SC-021 [398590]  (#Grp: {5, 6, 7, 8, 9})

SC-022 [131284]  (#Grp: {5, 6, 7, 8})

SC-023 [58831]  (#Grp: {5, 6, 7, 8})

SC-024 [16224]  (#Grp: {5, 6, 7, 8})

SC-025 [2142]  (#Grp: {6, 7})

Spikey Created with Wolfram Mathematica 9.0