span class="p">(</span><span class="n">data</span><span class="p">[</span><span class="n">k</span><span class="p">][</span><span class="n">j</span><span class="p">],</span> <span class="n">uncertain</span><span class="p">[</span><span class="n">k</span><span class="p">][</span><span class="n">j</span><span class="p">])</span>
                    <span class="n">tr</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="n">product</span><span class="p">)</span>
       