 class="n">cc</span><span class="p">)</span><span class="o">*</span><span class="n">dBRdZ</span><span class="p">(</span><span class="n">cc</span><span class="p">)</span><span class="o">+</span><span class="n">B_PHI</span><span class="p">(</span><span class="n">cc</span><span class="p">)</span><span class="o">*</span><span class="n">dBPHIdZ</span><span class="p">(</span><span class="n">cc</span><span class="p">)</span><span class="o">+</span> <span class="p">&amp;</span>
          <span class="n">B_Z</span><