abindex="-1"></a>      } </span>
<span id="cb6-63"><a href="#cb6-63" aria-hidden="true" tabindex="-1"></a>    }</span>
<span id="cb6-64"><a href="#cb6-64" aria-hidden="true" tabindex="-1"></a>    cov_term[[z<span class="sc">+</span><span class="dv">1</span>]] <span class="ot">&lt;-</span> cov_term_x_sum</span>
<span id="cb6-65"><a href="#cb6-65" aria-hidden="true" tabindex="-1"></a>  }</span>
<span id="cb6-66"><a href="#cb6-66" aria-hidden="true" tabindex="-1"></a>  term <span class="ot">&lt;-</span> <span 