n><span class="n">mean</span><span class="p">(</span><span class="n">data</span><span class="p">[</span><span class="s1">&#39;values&#39;</span><span class="p">])</span>
            <span class="n">step</span> <span class="o">=</span> <span class="n">data</span><span class="p">[</span><span class="s1">&#39;step&#39;</span><span class="p">]</span>
        <span class="k">else</span><span class="p">:</span>
            <span class="n">dist</span> <span class="o">=</span> <span class="n">np</span><span class="