<span class="o">=</span><span class="mi">0</span><span class="p">)</span>
            <span class="n">header_ax</span><span class="o">.</span><span class="n">set_title</span><span class="p">(</span><span class="s1">&#39;Cluster </span><span class="si">%s</span><span class="s1">&#39;</span> <span class="o">%</span> <span class="n">cluster_name</span><span class="p">)</span>
            <span class="n">header_ax</span><span class="o">.</span><span class="n">set_xlabel</span><span class="p">(</span><span class