Figure 6: Iteration 2 plot showing convergence & final clusters.
Ct11 (Centroid 1 at 1st iteration) move to Ct12 (Centroid 1 at 2nd iteration)
Ct21 (Centroid 2 at 1st iteration) move to Ct22 (Centroid 2 at 2nd iteration)
Ct31 (Centroid 3 at 1st iteration) move to Ct32 (Centroid 3 at 2nd iteration)