diff --git a/docs/pyerrors/fits.html b/docs/pyerrors/fits.html
index bb34f8d4..2ecd896e 100644
--- a/docs/pyerrors/fits.html
+++ b/docs/pyerrors/fits.html
@@ -476,7 +476,7 @@
 </span><span id="L-365"><a href="#L-365"><span class="linenos">365</span></a>        <span class="k">raise</span> <span class="ne">Exception</span><span class="p">(</span><span class="s1">&#39;The minimization procedure did not converge.&#39;</span><span class="p">)</span>
 </span><span id="L-366"><a href="#L-366"><span class="linenos">366</span></a>
 </span><span id="L-367"><a href="#L-367"><span class="linenos">367</span></a>    <span class="n">output</span><span class="o">.</span><span class="n">chisquare</span> <span class="o">=</span> <span class="n">chisquare</span>
-</span><span id="L-368"><a href="#L-368"><span class="linenos">368</span></a>    <span class="n">output</span><span class="o">.</span><span class="n">dof</span> <span class="o">=</span> <span class="n">x_all</span><span class="o">.</span><span class="n">shape</span><span class="p">[</span><span class="o">-</span><span class="mi">1</span><span class="p">]</span> <span class="o">-</span> <span class="n">n_parms</span> <span class="o">+</span> <span class="nb">len</span><span class="p">(</span><span class="n">loc_priors</span><span class="p">)</span>
+</span><span id="L-368"><a href="#L-368"><span class="linenos">368</span></a>    <span class="n">output</span><span class="o">.</span><span class="n">dof</span> <span class="o">=</span> <span class="n">y_all</span><span class="o">.</span><span class="n">shape</span><span class="p">[</span><span class="o">-</span><span class="mi">1</span><span class="p">]</span> <span class="o">-</span> <span class="n">n_parms</span> <span class="o">+</span> <span class="nb">len</span><span class="p">(</span><span class="n">loc_priors</span><span class="p">)</span>
 </span><span id="L-369"><a href="#L-369"><span class="linenos">369</span></a>    <span class="n">output</span><span class="o">.</span><span class="n">p_value</span> <span class="o">=</span> <span class="mi">1</span> <span class="o">-</span> <span class="n">scipy</span><span class="o">.</span><span class="n">stats</span><span class="o">.</span><span class="n">chi2</span><span class="o">.</span><span class="n">cdf</span><span class="p">(</span><span class="n">output</span><span class="o">.</span><span class="n">chisquare</span><span class="p">,</span> <span class="n">output</span><span class="o">.</span><span class="n">dof</span><span class="p">)</span>
 </span><span id="L-370"><a href="#L-370"><span class="linenos">370</span></a>    <span class="k">if</span> <span class="n">output</span><span class="o">.</span><span class="n">dof</span> <span class="o">&gt;</span> <span class="mi">0</span><span class="p">:</span>
 </span><span id="L-371"><a href="#L-371"><span class="linenos">371</span></a>        <span class="n">output</span><span class="o">.</span><span class="n">chisquare_by_dof</span> <span class="o">=</span> <span class="n">output</span><span class="o">.</span><span class="n">chisquare</span> <span class="o">/</span> <span class="n">output</span><span class="o">.</span><span class="n">dof</span>
@@ -504,7 +504,7 @@
 </span><span id="L-393"><a href="#L-393"><span class="linenos">393</span></a>            <span class="n">hat_vector</span> <span class="o">=</span> <span class="n">prepare_hat_matrix</span><span class="p">()</span>
 </span><span id="L-394"><a href="#L-394"><span class="linenos">394</span></a>            <span class="n">A</span> <span class="o">=</span> <span class="n">W</span> <span class="o">@</span> <span class="n">hat_vector</span>
 </span><span id="L-395"><a href="#L-395"><span class="linenos">395</span></a>            <span class="n">P_phi</span> <span class="o">=</span> <span class="n">A</span> <span class="o">@</span> <span class="n">np</span><span class="o">.</span><span class="n">linalg</span><span class="o">.</span><span class="n">pinv</span><span class="p">(</span><span class="n">A</span><span class="o">.</span><span class="n">T</span> <span class="o">@</span> <span class="n">A</span><span class="p">)</span> <span class="o">@</span> <span class="n">A</span><span class="o">.</span><span class="n">T</span>
-</span><span id="L-396"><a href="#L-396"><span class="linenos">396</span></a>            <span class="n">expected_chisquare</span> <span class="o">=</span> <span class="n">np</span><span class="o">.</span><span class="n">trace</span><span class="p">((</span><span class="n">np</span><span class="o">.</span><span class="n">identity</span><span class="p">(</span><span class="n">x_all</span><span class="o">.</span><span class="n">shape</span><span class="p">[</span><span class="o">-</span><span class="mi">1</span><span class="p">])</span> <span class="o">-</span> <span class="n">P_phi</span><span class="p">)</span> <span class="o">@</span> <span class="n">W</span> <span class="o">@</span> <span class="n">cov</span> <span class="o">@</span> <span class="n">W</span><span class="p">)</span>
+</span><span id="L-396"><a href="#L-396"><span class="linenos">396</span></a>            <span class="n">expected_chisquare</span> <span class="o">=</span> <span class="n">np</span><span class="o">.</span><span class="n">trace</span><span class="p">((</span><span class="n">np</span><span class="o">.</span><span class="n">identity</span><span class="p">(</span><span class="n">y_all</span><span class="o">.</span><span class="n">shape</span><span class="p">[</span><span class="o">-</span><span class="mi">1</span><span class="p">])</span> <span class="o">-</span> <span class="n">P_phi</span><span class="p">)</span> <span class="o">@</span> <span class="n">W</span> <span class="o">@</span> <span class="n">cov</span> <span class="o">@</span> <span class="n">W</span><span class="p">)</span>
 </span><span id="L-397"><a href="#L-397"><span class="linenos">397</span></a>            <span class="n">output</span><span class="o">.</span><span class="n">chisquare_by_expected_chisquare</span> <span class="o">=</span> <span class="n">output</span><span class="o">.</span><span class="n">chisquare</span> <span class="o">/</span> <span class="n">expected_chisquare</span>
 </span><span id="L-398"><a href="#L-398"><span class="linenos">398</span></a>            <span class="k">if</span> <span class="ow">not</span> <span class="n">silent</span><span class="p">:</span>
 </span><span id="L-399"><a href="#L-399"><span class="linenos">399</span></a>                <span class="nb">print</span><span class="p">(</span><span class="s1">&#39;chisquare/expected_chisquare:&#39;</span><span class="p">,</span> <span class="n">output</span><span class="o">.</span><span class="n">chisquare_by_expected_chisquare</span><span class="p">)</span>
@@ -1398,7 +1398,7 @@ Hotelling t-squared p-value for correlated fits.</li>
 </span><span id="least_squares-366"><a href="#least_squares-366"><span class="linenos">366</span></a>        <span class="k">raise</span> <span class="ne">Exception</span><span class="p">(</span><span class="s1">&#39;The minimization procedure did not converge.&#39;</span><span class="p">)</span>
 </span><span id="least_squares-367"><a href="#least_squares-367"><span class="linenos">367</span></a>
 </span><span id="least_squares-368"><a href="#least_squares-368"><span class="linenos">368</span></a>    <span class="n">output</span><span class="o">.</span><span class="n">chisquare</span> <span class="o">=</span> <span class="n">chisquare</span>
-</span><span id="least_squares-369"><a href="#least_squares-369"><span class="linenos">369</span></a>    <span class="n">output</span><span class="o">.</span><span class="n">dof</span> <span class="o">=</span> <span class="n">x_all</span><span class="o">.</span><span class="n">shape</span><span class="p">[</span><span class="o">-</span><span class="mi">1</span><span class="p">]</span> <span class="o">-</span> <span class="n">n_parms</span> <span class="o">+</span> <span class="nb">len</span><span class="p">(</span><span class="n">loc_priors</span><span class="p">)</span>
+</span><span id="least_squares-369"><a href="#least_squares-369"><span class="linenos">369</span></a>    <span class="n">output</span><span class="o">.</span><span class="n">dof</span> <span class="o">=</span> <span class="n">y_all</span><span class="o">.</span><span class="n">shape</span><span class="p">[</span><span class="o">-</span><span class="mi">1</span><span class="p">]</span> <span class="o">-</span> <span class="n">n_parms</span> <span class="o">+</span> <span class="nb">len</span><span class="p">(</span><span class="n">loc_priors</span><span class="p">)</span>
 </span><span id="least_squares-370"><a href="#least_squares-370"><span class="linenos">370</span></a>    <span class="n">output</span><span class="o">.</span><span class="n">p_value</span> <span class="o">=</span> <span class="mi">1</span> <span class="o">-</span> <span class="n">scipy</span><span class="o">.</span><span class="n">stats</span><span class="o">.</span><span class="n">chi2</span><span class="o">.</span><span class="n">cdf</span><span class="p">(</span><span class="n">output</span><span class="o">.</span><span class="n">chisquare</span><span class="p">,</span> <span class="n">output</span><span class="o">.</span><span class="n">dof</span><span class="p">)</span>
 </span><span id="least_squares-371"><a href="#least_squares-371"><span class="linenos">371</span></a>    <span class="k">if</span> <span class="n">output</span><span class="o">.</span><span class="n">dof</span> <span class="o">&gt;</span> <span class="mi">0</span><span class="p">:</span>
 </span><span id="least_squares-372"><a href="#least_squares-372"><span class="linenos">372</span></a>        <span class="n">output</span><span class="o">.</span><span class="n">chisquare_by_dof</span> <span class="o">=</span> <span class="n">output</span><span class="o">.</span><span class="n">chisquare</span> <span class="o">/</span> <span class="n">output</span><span class="o">.</span><span class="n">dof</span>
@@ -1426,7 +1426,7 @@ Hotelling t-squared p-value for correlated fits.</li>
 </span><span id="least_squares-394"><a href="#least_squares-394"><span class="linenos">394</span></a>            <span class="n">hat_vector</span> <span class="o">=</span> <span class="n">prepare_hat_matrix</span><span class="p">()</span>
 </span><span id="least_squares-395"><a href="#least_squares-395"><span class="linenos">395</span></a>            <span class="n">A</span> <span class="o">=</span> <span class="n">W</span> <span class="o">@</span> <span class="n">hat_vector</span>
 </span><span id="least_squares-396"><a href="#least_squares-396"><span class="linenos">396</span></a>            <span class="n">P_phi</span> <span class="o">=</span> <span class="n">A</span> <span class="o">@</span> <span class="n">np</span><span class="o">.</span><span class="n">linalg</span><span class="o">.</span><span class="n">pinv</span><span class="p">(</span><span class="n">A</span><span class="o">.</span><span class="n">T</span> <span class="o">@</span> <span class="n">A</span><span class="p">)</span> <span class="o">@</span> <span class="n">A</span><span class="o">.</span><span class="n">T</span>
-</span><span id="least_squares-397"><a href="#least_squares-397"><span class="linenos">397</span></a>            <span class="n">expected_chisquare</span> <span class="o">=</span> <span class="n">np</span><span class="o">.</span><span class="n">trace</span><span class="p">((</span><span class="n">np</span><span class="o">.</span><span class="n">identity</span><span class="p">(</span><span class="n">x_all</span><span class="o">.</span><span class="n">shape</span><span class="p">[</span><span class="o">-</span><span class="mi">1</span><span class="p">])</span> <span class="o">-</span> <span class="n">P_phi</span><span class="p">)</span> <span class="o">@</span> <span class="n">W</span> <span class="o">@</span> <span class="n">cov</span> <span class="o">@</span> <span class="n">W</span><span class="p">)</span>
+</span><span id="least_squares-397"><a href="#least_squares-397"><span class="linenos">397</span></a>            <span class="n">expected_chisquare</span> <span class="o">=</span> <span class="n">np</span><span class="o">.</span><span class="n">trace</span><span class="p">((</span><span class="n">np</span><span class="o">.</span><span class="n">identity</span><span class="p">(</span><span class="n">y_all</span><span class="o">.</span><span class="n">shape</span><span class="p">[</span><span class="o">-</span><span class="mi">1</span><span class="p">])</span> <span class="o">-</span> <span class="n">P_phi</span><span class="p">)</span> <span class="o">@</span> <span class="n">W</span> <span class="o">@</span> <span class="n">cov</span> <span class="o">@</span> <span class="n">W</span><span class="p">)</span>
 </span><span id="least_squares-398"><a href="#least_squares-398"><span class="linenos">398</span></a>            <span class="n">output</span><span class="o">.</span><span class="n">chisquare_by_expected_chisquare</span> <span class="o">=</span> <span class="n">output</span><span class="o">.</span><span class="n">chisquare</span> <span class="o">/</span> <span class="n">expected_chisquare</span>
 </span><span id="least_squares-399"><a href="#least_squares-399"><span class="linenos">399</span></a>            <span class="k">if</span> <span class="ow">not</span> <span class="n">silent</span><span class="p">:</span>
 </span><span id="least_squares-400"><a href="#least_squares-400"><span class="linenos">400</span></a>                <span class="nb">print</span><span class="p">(</span><span class="s1">&#39;chisquare/expected_chisquare:&#39;</span><span class="p">,</span> <span class="n">output</span><span class="o">.</span><span class="n">chisquare_by_expected_chisquare</span><span class="p">)</span>