nycflights13/man/weather.html" class="external-link">weather</a></span></span>
<span><span class="va">flights.grp</span><span class="op">[[</span><span class="st">"flights"</span><span class="op">]</span><span class="op">]</span> <span class="op">&lt;-</span> <span class="fu">nycflights13</span><span class="fu">::</span><span class="va"><a href="https://rdrr.io/pkg/nycflights13/man/flights.html" class="external-link">flights</a></span></span></code></pre></div>
<p>Out of the weather data, we extract the inf