span class="s1">&#39;</span><span class="si">{med:12}</span><span class="s1">, &#39;</span> \
        <span class="s1">&#39;</span><span class="si">{avg:12}</span><span class="s1">, &#39;</span> \
        <span class="s1">&#39;</span><span class="si">{std:12}</span><span class="se">\n</span><span class="s1">&#39;</span><span class="o">.</span><span class="n">format</span><span class="p">(</span><span class="n">leng</span><span class="o">=</span><span class="n">len_str</span><span class="p">,</span>
        