:summarise()`.</span>
<span class="r-wrn co"><span class="r-pr">#&gt;</span> The first warning was:</span>
<span class="r-wrn co"><span class="r-pr">#&gt;</span> <span style="color: #00BBBB;">ℹ</span> In argument: `Dspstart = min(.data$Date[which(.data$Qspri &gt; 0)])`.</span>
<span class="r-wrn co"><span class="r-pr">#&gt;</span> <span style="color: #00BBBB;">ℹ</span> In group 19: `Year1 = 1974`.</span>
<span class="r-wrn co"><span class="r-pr">#&gt;</span> Caused by warning in `min.default()`:</span>
