="r-pr">#&gt;</span>                                                       -7.754e+04  </span>
<span class="r-out co"><span class="r-pr">#&gt;</span>                                            as.factor(cal_time)20  </span>
<span class="r-out co"><span class="r-pr">#&gt;</span>                                                        1.527e+05  </span>
<span class="r-out co"><span class="r-pr">#&gt;</span>  poly(j, degree = poly_degree, raw = TRUE)1:as.factor(cal_time)2  </span>
<span class="r-out co"><sp