
<span class="sd">    2017-01-01 12:45:00    3.0    NaN    3.0</span>
<span class="sd">    2017-01-01 13:00:00    4.0    4.0    4.0</span>
<span class="sd">    2017-01-01 13:15:00    5.0    5.0    5.0</span>
<span class="sd">    2017-01-01 13:30:00    6.0    NaN    6.0</span>
<span class="sd">    2017-01-01 13:45:00    NaN    7.0    7.0</span>
<span class="sd">    2017-01-01 14:00:00    NaN    8.0    8.0</span>
<span class="sd">    2017-01-01 14:15:00    9.0    NaN    9.0</span>
<span class="sd">    &gt;&gt