">makeGraph=0;
<span class="keyword">if</span> makeGraph==1;

  subplot(2,2,1)
  plot(ttm,100*mean(mean(Zb,3)),<span class="string">'b'</span>)
  hold <span class="string">on</span>
  plot(ttm,100*mean(mean(F,3)),<span class="string">'r'</span>)
  plot(ttm,100*mean(mean(Zhat,3)),<span class="string">'g'</span>)
  hold <span class="string">off</span>
  xlabel(<span class="string">'Tenor (yrs.)'</span>)
  ylabel(<span class="string">'Per cent'</span>)
  legend(<span class="string">'Current zero'</span>,<span 