span class="o">.</span><span class="n">velocity</span><span class="p">[</span><span class="n">line_ct</span><span class="p">]</span>  <span class="c1"># Get velocity</span>
            <span class="n">broad_</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">broadening</span><span class="p">[</span><span class="n">line_ct</span><span class="p">]</span>  <span class="c1"># Get broadening</span>
            <span class="n">amp_</span> <span class="o">=</span> <