span> <span class="co">#expecting a = 4.99, b = 3.22</span></span></code></pre></div>
<pre><code><span><span class="co">## </span></span>
<span><span class="co">## Formula: K.Kmax ~ exp(-((psi/a)^b))</span></span>
<span><span class="co">## </span></span>
<span><span class="co">## Parameters:</span></span>
<span><span class="co">##   Estimate Std. Error t value Pr(&gt;|t|)    </span></span>
<span><span class="co">## a   5.3160     0.0902   58.93 4.96e-07 ***</span></span>
<span><span class="co">## b   2.7778