">)</span> <span class="op">{</span></span>
<span class="r-in"></span>
<span class="r-in"><span class="co"># Storing different versions of the data, use parameter valid_from</span></span>
<span class="r-in"><span class="co"># different versions are stored with the same key</span></span>
<span class="r-in"><span class="va">ch.kof.barometer</span> <span class="op">&lt;-</span> <span class="va">kof_ts</span><span class="op">[</span><span class="st">"baro_2019m11"</span><span class="op">]</span></span>
<span cl