span><span class="op">(</span><span class="va">gpfit</span><span class="op">)</span><span class="op">)</span></span></span>
<span class="r-out co"><span class="r-pr">#&gt;</span>          sigma[u]         xi</span>
<span class="r-out co"><span class="r-pr">#&gt;</span> [1,] -0.063902582 -0.3512112</span>
<span class="r-out co"><span class="r-pr">#&gt;</span> [2,] -0.086318699 -0.1962096</span>
<span class="r-out co"><span class="r-pr">#&gt;</span> [3,] -0.075227392 -0.2790858</span>
<span class="r-out co"><