                                                1.897e+00  </span>
<span class="r-out co"><span class="r-pr">#&gt;</span> poly(j, degree = poly_degree, raw = TRUE)3:as.factor(cal_time)20  </span>
<span class="r-out co"><span class="r-pr">#&gt;</span>                                                       -4.111e-04  </span>
<span class="r-out co"><span class="r-pr">#&gt;</span> </span>
<span class="r-out co"><span class="r-pr">#&gt;</span> </span>
<span class="r-in"><span></span></span>
</code></pre></