             NA              NA                NA          NA      NA</span></span>
<span><span class="co">#&gt; 5                   NA              NA                NA          NA      NA</span></span>
<span><span class="co">#&gt;   Periphyton</span></span>
<span><span class="co">#&gt; 1         NA</span></span>
<span><span class="co">#&gt; 2         NA</span></span>
<span><span class="co">#&gt; 3         NA</span></span>
<span><span class="co">#&gt; 4         NA</span></span>
<span><span class="co">#&gt;