>
<code>variance_est</code>: estimated variance<br>
</li>
<li>
<code>estimand</code>: true policy value (computed from held-out
context data)<br>
</li>
<li>
<code>prediction_error</code>:
<code>estimate - estimand</code><br>
</li>
<li>
<code>est_rel_error</code>: relative error on estimate<br>
</li>
<li>
<code>variance_prediction_error</code>: relative error on
variance<br>
</li>
<li>
<code>ci_lower</code>, <code>ci_upper</code>: bounds of the
confidence interval<br>
</li>
<li>
<code>std_error</code>: stand