p_distributed_lag</a></span><span class="op">(</span><span class="va">baro</span>, knots <span class="op">=</span> <span class="va">ba_knots</span><span class="op">)</span> <span class="op">|&gt;</span></span>
<span>  <span class="fu"><a href="../reference/step_spline_b.html">step_spline_b</a></span><span class="op">(</span><span class="va">datetime</span>, df <span class="op">=</span> <span class="va">df</span><span class="op">)</span> <span class="op">|&gt;</span></span>
<span>  <span class="fu"><a href="