><span class="p">:])</span>
        <span class="bp">self</span><span class="o">.</span><span class="n">normalizedDF</span> <span class="o">=</span> <span class="kc">None</span>
        <span class="bp">self</span><span class="o">.</span><span class="n">startTime</span> <span class="o">=</span> <span class="kc">None</span>
        <span class="bp">self</span><span class="o">.</span><span class="n">endTime</span> <span class="o">=</span> <span class="kc">None</span>
        <span class="bp">self</span><span 