>
<p><code class="docutils literal"><span class="pre">ECG_annotations</span></code> — Annotations provided with the recording.</p>
<blockquote>
<div>Commonly QRS detections, signal quality annotations or other type of measurements
included with the recordings. Some documentation about annotations in <a class="reference external" href="http://www.physionet.org/physiobank/annotations.shtml">Physionet</a>.</div></blockquote>
<p><code class="docutils literal"><span class="pre">class_labeling</span></code> —