frog__,divergent__,energy__,theta</code></pre>
<p>The first output columns report the HMC sampler information:</p>
<ul>
<li><code>lp__</code> - the total log probability density (up to an additive constant) at each sample</li>
<li><code>accept_stat__</code> - the average Metropolis acceptance probability over each simulated Hamiltonian trajectory</li>
<li><code>stepsize__</code> - integrator step size</li>
<li><code>treedepth__</code> - depth of tree used by NUTS (NUTS sampler)</li>
<li><code>n_leapfrog__</