an><span class="p">(</span><span class="n">line</span><span class="p">)</span>
            <span class="n">line_lambda_cm</span> <span class="o">=</span> <span class="mf">1e7</span> <span class="o">/</span> <span class="bp">self</span><span class="o">.</span><span class="n">line_dict</span><span class="p">[</span><span class="n">line</span><span class="p">]</span>  <span class="c1"># Convert from nm to cm-1</span>
            <span class="n">vel_</span> <span class="o">=</span> <span class="bp">self</span><