ghest concentration with a precision of a grid of 25 meters</span></span></span>
<span class="r-in"><span><span class="va">hc1</span> <span class="op">&lt;-</span> <span class="fu"><a href="highest_concentration.html">highest_concentration</a></span><span class="op">(</span><span class="va">Groningen</span>, <span class="va">amount</span>, radius <span class="op">=</span> <span class="fl">200</span>,</span></span>
<span class="r-in"><span> grid_distance <span class="op">=</span> <span class="fl">25</span><s