de">METRICWX</span>.
                </td>
            </tr>
            <tr>
                <td class="text_highlight">time stamp</td>
                <td>A variable in unix epoch time. Always in UTC. Variables carrying a time stamp usually have a suffix
                    <span class="code">_ts</span>.
                </td>
            </tr>
            <tr>
                <td class="text_highlight">tuple-time</td>
                <td>An instance of the Python object <span class="code">
            <a 