nto 5 classes</span>
<span class="r-out co"><span class="r-pr">#&gt;</span> [-3179.375,2025.578)  [2025.578,7230.531)  [7230.531,12435.48) </span>
<span class="r-out co"><span class="r-pr">#&gt;</span>                    1                   19                    9 </span>
<span class="r-out co"><span class="r-pr">#&gt;</span>  [12435.48,17640.44)  [17640.44,22845.39] </span>
<span class="r-out co"><span class="r-pr">#&gt;</span>                    0                    3 </span>
<span class="r-in"><span><spa