 class="r-pr">#&gt;</span> poly(j, degree = poly_degree, raw = TRUE)3:as.factor(cal_time)12  </span>
<span class="r-out co"><span class="r-pr">#&gt;</span>                                                        1.077e-03  </span>
<span class="r-out co"><span class="r-pr">#&gt;</span> poly(j, degree = poly_degree, raw = TRUE)1:as.factor(cal_time)13  </span>
<span class="r-out co"><span class="r-pr">#&gt;</span>                                                       -1.030e+02  </span>
<span class="r-out c